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Poodletooth-iLand/panda/python/Lib/site-packages/wx/lib/ogl/basic.py

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added wx, setuptools, and pip
2015-03-06 06:11:40 -06:00
# -*- coding: utf-8 -*-
#----------------------------------------------------------------------------
# Name: basic.py
# Purpose: The basic OGL shapes
#
# Author: Pierre Hjälm (from C++ original by Julian Smart)
#
# Created: 2004-05-08
# Copyright: (c) 2004 Pierre Hjälm - 1998 Julian Smart
# Licence: wxWindows license
# Tags: phoenix-port, unittest, py3-port, documented
#----------------------------------------------------------------------------
"""
The basic shapes for OGL
"""
import wx
import math
from .oglmisc import *
DragOffsetX = 0.0
DragOffsetY = 0.0
def OGLInitialize():
"""Initialize OGL.
:note: This creates some pens and brushes that the OGL library uses.
It should be called after the app object has been created, but
before OGL is used.
"""
global WhiteBackgroundPen, WhiteBackgroundBrush, TransparentPen
global BlackForegroundPen, NormalFont
WhiteBackgroundPen = wx.Pen(wx.WHITE, 1, wx.PENSTYLE_SOLID)
WhiteBackgroundBrush = wx.Brush(wx.WHITE, wx.BRUSHSTYLE_SOLID)
TransparentPen = wx.Pen(wx.WHITE, 1, wx.PENSTYLE_TRANSPARENT)
BlackForegroundPen = wx.Pen(wx.BLACK, 1, wx.PENSTYLE_SOLID)
NormalFont = wx.Font(10, wx.FONTFAMILY_SWISS, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_NORMAL)
def OGLCleanUp():
"""not implemented???"""
pass
class ShapeTextLine(object):
"""The :class:`ShapeTextLine` class."""
def __init__(self, the_x, the_y, the_line):
"""
Default class constructor.
:param int `the_x`: the x position
:param int `the_y`: the y position
:param str `the_line`: the text
"""
self._x = the_x
self._y = the_y
self._line = the_line
def GetX(self):
"""Get the x position."""
return self._x
def GetY(self):
"""Get the y position."""
return self._y
def SetX(self, x):
"""
Set the x position.
:param int `x`: the x position
"""
self._x = x
def SetY(self, y):
"""
Set the y position.
:param int `y`: the x position
"""
self._y = y
def SetText(self, text):
"""
Set the text.
:param str `text`: the text
"""
self._line = text
def GetText(self):
"""Get the text."""
return self._line
class ShapeEvtHandler(object):
"""The :class:`ShapeEvtHandler` class."""
def __init__(self, prev = None, shape = None):
"""
Default class constructor.
:param `pref`: the previous event handler, an instance of
:class:`ShapeEvtHandler` ???
:param `shape`: the shape, an instance of :class:`Shape`
"""
self._previousHandler = prev
self._handlerShape = shape
def SetShape(self, sh):
"""
Set associated shape
:param `sh`: the shape, an instance of :class:`Shape`
"""
self._handlerShape = sh
def GetShape(self):
"""Get associated shape."""
return self._handlerShape
def SetPreviousHandler(self, handler):
"""
Set previous event handler.
:param `handler`: the previous handler, an instance of
:class:`ShapeEvtHandler` ???
"""
self._previousHandler = handler
def GetPreviousHandler(self):
"""Get previous event handler."""
return self._previousHandler
def OnDelete(self):
"""The delete handler."""
if self!=self.GetShape():
del self
def OnDraw(self, dc):
"""The draw handler."""
if self._previousHandler:
self._previousHandler.OnDraw(dc)
def OnMoveLinks(self, dc):
"""The move links handler."""
if self._previousHandler:
self._previousHandler.OnMoveLinks(dc)
def OnMoveLink(self, dc, moveControlPoints = True):
"""The move link handler."""
if self._previousHandler:
self._previousHandler.OnMoveLink(dc, moveControlPoints)
def OnDrawContents(self, dc):
"""The draw contents handler."""
if self._previousHandler:
self._previousHandler.OnDrawContents(dc)
def OnDrawBranches(self, dc, erase = False):
"""The draw branches handler."""
if self._previousHandler:
self._previousHandler.OnDrawBranches(dc, erase = erase)
def OnSize(self, x, y):
"""The size handler."""
if self._previousHandler:
self._previousHandler.OnSize(x, y)
def OnMovePre(self, dc, x, y, old_x, old_y, display = True):
"""The pre move handler."""
if self._previousHandler:
return self._previousHandler.OnMovePre(dc, x, y, old_x, old_y, display)
else:
return True
def OnMovePost(self, dc, x, y, old_x, old_y, display = True):
"""The post move handler."""
if self._previousHandler:
return self._previousHandler.OnMovePost(dc, x, y, old_x, old_y, display)
else:
return True
def OnErase(self, dc):
"""The erase handler."""
if self._previousHandler:
self._previousHandler.OnErase(dc)
def OnEraseContents(self, dc):
"""The erase contents handler."""
if self._previousHandler:
self._previousHandler.OnEraseContents(dc)
def OnHighlight(self, dc):
"""The highlight handler."""
if self._previousHandler:
self._previousHandler.OnHighlight(dc)
def OnLeftClick(self, x, y, keys, attachment):
"""The left click handler."""
if self._previousHandler:
self._previousHandler.OnLeftClick(x, y, keys, attachment)
def OnLeftDoubleClick(self, x, y, keys = 0, attachment = 0):
"""The left double click handler."""
if self._previousHandler:
self._previousHandler.OnLeftDoubleClick(x, y, keys, attachment)
def OnRightClick(self, x, y, keys = 0, attachment = 0):
"""The right click handler."""
if self._previousHandler:
self._previousHandler.OnRightClick(x, y, keys, attachment)
def OnDragLeft(self, draw, x, y, keys = 0, attachment = 0):
"""The drag left handler."""
if self._previousHandler:
self._previousHandler.OnDragLeft(draw, x, y, keys, attachment)
def OnBeginDragLeft(self, x, y, keys = 0, attachment = 0):
"""The begin drag left handler."""
if self._previousHandler:
self._previousHandler.OnBeginDragLeft(x, y, keys, attachment)
def OnEndDragLeft(self, x, y, keys = 0, attachment = 0):
"""The end drag left handler."""
if self._previousHandler:
self._previousHandler.OnEndDragLeft(x, y, keys, attachment)
def OnDragRight(self, draw, x, y, keys = 0, attachment = 0):
"""The drag right handler."""
if self._previousHandler:
self._previousHandler.OnDragRight(draw, x, y, keys, attachment)
def OnBeginDragRight(self, x, y, keys = 0, attachment = 0):
"""The begin drag right handler."""
if self._previousHandler:
self._previousHandler.OnBeginDragRight(x, y, keys, attachment)
def OnEndDragRight(self, x, y, keys = 0, attachment = 0):
"""The end drag right handler."""
if self._previousHandler:
self._previousHandler.OnEndDragRight(x, y, keys, attachment)
# Control points ('handles') redirect control to the actual shape,
# to make it easier to override sizing behaviour.
def OnSizingDragLeft(self, pt, draw, x, y, keys = 0, attachment = 0):
"""The sizing drag left handler."""
if self._previousHandler:
self._previousHandler.OnSizingDragLeft(pt, draw, x, y, keys, attachment)
def OnSizingBeginDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing begin drag left handler."""
if self._previousHandler:
self._previousHandler.OnSizingBeginDragLeft(pt, x, y, keys, attachment)
def OnSizingEndDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing end drag left handler."""
if self._previousHandler:
self._previousHandler.OnSizingEndDragLeft(pt, x, y, keys, attachment)
def OnBeginSize(self, w, h):
"""not implemented???"""
pass
def OnEndSize(self, w, h):
"""not implemented???"""
pass
def OnDrawOutline(self, dc, x, y, w, h):
"""The drag outline handler."""
if self._previousHandler:
self._previousHandler.OnDrawOutline(dc, x, y, w, h)
def OnDrawControlPoints(self, dc):
"""The draw control points handler."""
if self._previousHandler:
self._previousHandler.OnDrawControlPoints(dc)
def OnEraseControlPoints(self, dc):
"""The erase control points handler."""
if self._previousHandler:
self._previousHandler.OnEraseControlPoints(dc)
# Can override this to prevent or intercept line reordering.
def OnChangeAttachment(self, attachment, line, ordering):
"""The change attachment handler."""
if self._previousHandler:
self._previousHandler.OnChangeAttachment(attachment, line, ordering)
class Shape(ShapeEvtHandler):
"""
The :class:`Shape` is the base class for OGL shapes.
The :class:`Shape` is the top-level, abstract object that all other objects
are derived from. All common functionality is represented by :class:`Shape`
members, and overriden members that appear in derived classes and have
behaviour as documented for :class:`Shape`, are not documented separately.
"""
GraphicsInSizeToContents = False
def __init__(self, canvas = None):
"""
Default class constructor.
:param `canvas`: an instance of :class:`~lib.ogl.Canvas`
"""
ShapeEvtHandler.__init__(self)
self._eventHandler = self
self.SetShape(self)
self._id = 0
self._formatted = False
self._canvas = canvas
self._xpos = 0.0
self._ypos = 0.0
self._pen = BlackForegroundPen
self._brush = wx.WHITE_BRUSH
self._font = NormalFont
self._textColour = wx.BLACK
self._textColourName = wx.BLACK
self._visible = False
self._selected = False
self._attachmentMode = ATTACHMENT_MODE_NONE
self._spaceAttachments = True
self._disableLabel = False
self._fixedWidth = False
self._fixedHeight = False
self._drawHandles = True
self._sensitivity = OP_ALL
self._draggable = True
self._parent = None
self._formatMode = FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT
self._shadowMode = SHADOW_NONE
self._shadowOffsetX = 6
self._shadowOffsetY = 6
self._shadowBrush = wx.BLACK_BRUSH
self._textMarginX = 5
self._textMarginY = 5
self._regionName = "0"
self._centreResize = True
self._maintainAspectRatio = False
self._highlighted = False
self._rotation = 0.0
self._branchNeckLength = 10
self._branchStemLength = 10
self._branchSpacing = 10
self._branchStyle = BRANCHING_ATTACHMENT_NORMAL
self._regions = []
self._lines = []
self._controlPoints = []
self._attachmentPoints = []
self._text = []
self._children = []
# Set up a default region. Much of the above will be put into
# the region eventually (the duplication is for compatibility)
region = ShapeRegion()
region.SetName("0")
region.SetFont(NormalFont)
region.SetFormatMode(FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT)
region.SetColour("BLACK")
self._regions.append(region)
def __str__(self):
return "<%s.%s>" % (self.__class__.__module__, self.__class__.__name__)
def GetClassName(self):
return str(self.__class__).split(".")[-1][:-2]
def Delete(self):
"""
Fully disconnect this shape from parents, children, the
canvas, etc.
"""
if self._parent:
self._parent.GetChildren().remove(self)
for child in self.GetChildren():
child.Delete()
self.ClearText()
self.ClearRegions()
self.ClearAttachments()
self._handlerShape = None
if self._canvas:
self.RemoveFromCanvas(self._canvas)
if self.GetEventHandler():
self.GetEventHandler().OnDelete()
self._eventHandler = None
def Draggable(self):
"""
Is shape draggable?
:returns: `True` if the shape may be dragged by the user.
"""
return True
def SetShape(self, sh):
"""Set shape ???
:param `sh`: an instance of :class:`Shape`
"""
self._handlerShape = sh
def GetCanvas(self):
"""Get the internal canvas."""
return self._canvas
def GetBranchStyle(self):
"""Get the branch style."""
return self._branchStyle
def GetRotation(self):
"""Return the angle of rotation in radians."""
return self._rotation
def SetRotation(self, rotation):
"""Set rotation
:param int `rotation`: rotation
"""
self._rotation = rotation
def SetHighlight(self, hi, recurse = False):
"""Set the highlight for a shape. Shape highlighting is unimplemented."""
self._highlighted = hi
if recurse:
for shape in self._children:
shape.SetHighlight(hi, recurse)
def SetSensitivityFilter(self, sens = OP_ALL, recursive = False):
"""
Set the shape to be sensitive or insensitive to specific mouse
operations.
:param `sens`: is a bitlist of the following:
========================== ===================
Mouse operation Description
========================== ===================
`OP_CLICK_LEFT` left clicked
`OP_CLICK_RIGHT` right clicked
`OP_DRAG_LEFT` left drag
`OP_DRAG_RIGHT` right drag
`OP_ALL` all of the above
========================== ===================
:param `recursive`: if `True` recurse through children
"""
self._draggable = sens & OP_DRAG_LEFT
self._sensitivity = sens
if recursive:
for shape in self._children:
shape.SetSensitivityFilter(sens, True)
def SetDraggable(self, drag, recursive = False):
"""Set the shape to be draggable or not draggable.
:param `drag`: if `True` make shape draggable
:param `recursive`: if `True` recurse through children
"""
self._draggable = drag
if drag:
self._sensitivity |= OP_DRAG_LEFT
elif self._sensitivity & OP_DRAG_LEFT:
self._sensitivity -= OP_DRAG_LEFT
if recursive:
for shape in self._children:
shape.SetDraggable(drag, True)
def SetDrawHandles(self, drawH):
"""
Set the drawHandles flag for this shape and all descendants.
:param `drawH`: if `True` (the default), any handles (control points)
will be drawn. Otherwise, the handles will not be drawn.
"""
self._drawHandles = drawH
for shape in self._children:
shape.SetDrawHandles(drawH)
def SetShadowMode(self, mode, redraw = False):
"""
Set the shadow mode (whether a shadow is drawn or not).
:param `mode`: can be one of the following:
=============================== ===========================
Shadow mode Description
=============================== ===========================
`SHADOW_NONE` No shadow (the default)
`SHADOW_LEFT` Shadow on the left side
`SHADOW_RIGHT` Shadow on the right side
=============================== ===========================
"""
if redraw and self.GetCanvas():
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
self.Erase(dc)
self._shadowMode = mode
self.Draw(dc)
else:
self._shadowMode = mode
def GetShadowMode(self):
"""Get the current shadow mode setting."""
return self._shadowMode
def SetCanvas(self, theCanvas):
"""
Set the canvas, identical to Shape.Attach.
:param `theCanvas`: an instance of :class:`~lib.ogl.Canvas`
"""
self._canvas = theCanvas
for shape in self._children:
shape.SetCanvas(theCanvas)
def AddToCanvas(self, theCanvas, addAfter = None):
"""
Add the shape to the canvas's shape list.
:param `theCanvas`: an instance of :class:`~lib.ogl.Canvas`
:param `addAfter`: if non-NULL, will add the shape after this shape
"""
theCanvas.AddShape(self, addAfter)
lastImage = self
for object in self._children:
object.AddToCanvas(theCanvas, lastImage)
lastImage = object
def InsertInCanvas(self, theCanvas):
"""
Insert the shape at the front of the shape list of canvas.
:param `theCanvas`: an instance of :class:`~lib.ogl.Canvas`
"""
theCanvas.InsertShape(self)
lastImage = self
for object in self._children:
object.AddToCanvas(theCanvas, lastImage)
lastImage = object
def RemoveFromCanvas(self, theCanvas):
"""
Remove the shape from the canvas.
:param `theCanvas`: an instance of :class:`~lib.ogl.Canvas`
"""
if self.Selected():
self.Select(False)
self._canvas = None
theCanvas.RemoveShape(self)
for object in self._children:
object.RemoveFromCanvas(theCanvas)
def ClearAttachments(self):
"""Clear internal custom attachment point shapes (of class
:class:`~lib.ogl.AttachmentPoint`)
"""
self._attachmentPoints = []
def ClearText(self, regionId = 0):
"""
Clear the text from the specified text region.
:param `regionId`: the region identifier
"""
if regionId == 0:
self._text = ""
if regionId < len(self._regions):
self._regions[regionId].ClearText()
def ClearRegions(self):
"""Clear the ShapeRegions from the shape."""
self._regions = []
def AddRegion(self, region):
"""Add a region to the shape."""
self._regions.append(region)
def SetDefaultRegionSize(self):
"""Set the default region to be consistent with the shape size."""
if not self._regions:
return
w, h = self.GetBoundingBoxMax()
self._regions[0].SetSize(w, h)
def HitTest(self, x, y):
"""
Given a point on a canvas, returns `True` if the point was on the
shape, and returns the nearest attachment point and distance from
the given point and target.
:param `x`: the x position
:param `y`: the y position
"""
width, height = self.GetBoundingBoxMax()
if abs(width) < 4:
width = 4.0
if abs(height) < 4:
height = 4.0
width += 4 # Allowance for inaccurate mousing
height += 4
left = self._xpos - width / 2.0
top = self._ypos - height / 2.0
right = self._xpos + width / 2.0
bottom = self._ypos + height / 2.0
nearest_attachment = 0
# If within the bounding box, check the attachment points
# within the object.
if x >= left and x <= right and y >= top and y <= bottom:
n = self.GetNumberOfAttachments()
nearest = 999999
# GetAttachmentPosition[Edge] takes a logical attachment position,
# i.e. if it's rotated through 90%, position 0 is East-facing.
for i in range(n):
e = self.GetAttachmentPositionEdge(i)
if e:
xp, yp = e
l = math.sqrt(((xp - x) * (xp - x)) + (yp - y) * (yp - y))
if l < nearest:
nearest = l
nearest_attachment = i
return nearest_attachment, nearest
return False
# Format a text string according to the region size, adding
# strings with positions to region text list
def FormatText(self, dc, s, i = 0):
"""
Reformat the given text region; defaults to formatting the
default region.
:param `dc`: the device contexr
:param str `s`: the text string
:param int `i`: the region identifier
"""
self.ClearText(i)
if not self._regions:
return
if i >= len(self._regions):
return
region = self._regions[i]
region._regionText = s
dc.SetFont(region.GetFont())
w, h = region.GetSize()
stringList = FormatText(dc, s, (w - 2 * self._textMarginX), (h - 2 * self._textMarginY), region.GetFormatMode())
for s in stringList:
line = ShapeTextLine(0.0, 0.0, s)
region.GetFormattedText().append(line)
actualW = w
actualH = h
# Don't try to resize an object with more than one image (this
# case should be dealt with by overriden handlers)
if (region.GetFormatMode() & FORMAT_SIZE_TO_CONTENTS) and \
len(region.GetFormattedText()) and \
len(self._regions) == 1 and \
not Shape.GraphicsInSizeToContents:
actualW, actualH = GetCentredTextExtent(dc, region.GetFormattedText())
if actualW + 2 * self._textMarginX != w or actualH + 2 * self._textMarginY != h:
# If we are a descendant of a composite, must make sure
# the composite gets resized properly
topAncestor = self.GetTopAncestor()
if topAncestor != self:
Shape.GraphicsInSizeToContents = True
composite = topAncestor
composite.Erase(dc)
self.SetSize(actualW + 2 * self._textMarginX, actualH + 2 * self._textMarginY)
self.Move(dc, self._xpos, self._ypos)
composite.CalculateSize()
if composite.Selected():
composite.DeleteControlPoints(dc)
composite.MakeControlPoints()
composite.MakeMandatoryControlPoints()
# Where infinite recursion might happen if we didn't stop it
composite.Draw(dc)
Shape.GraphicsInSizeToContents = False
else:
self.Erase(dc)
self.SetSize(actualW + 2 * self._textMarginX, actualH + 2 * self._textMarginY)
self.Move(dc, self._xpos, self._ypos)
self.EraseContents(dc)
CentreText(dc, region.GetFormattedText(), self._xpos, self._ypos, actualW - 2 * self._textMarginX, actualH - 2 * self._textMarginY, region.GetFormatMode())
self._formatted = True
def Recentre(self, dc):
"""
Recentre (or other formatting) all the text regions for this shape.
"""
w, h = self.GetBoundingBoxMin()
for region in self._regions:
CentreText(dc, region.GetFormattedText(), self._xpos, self._ypos, w - 2 * self._textMarginX, h - 2 * self._textMarginY, region.GetFormatMode())
def GetPerimeterPoint(self, x1, y1, x2, y2):
"""
Get the point at which the line from (x1, y1) to (x2, y2) hits
the shape.
:param `x1`: the x1 position
:param `y1`: the y1 position
:param `x2`: the x2 position
:param `y2`: the y2 position
:returns: `False` if the line doesn't hit the perimeter.
"""
return False
def SetPen(self, the_pen):
"""Set the pen for drawing the shape's outline."""
self._pen = the_pen
def SetBrush(self, the_brush):
"""Set the brush for filling the shape's shape."""
self._brush = the_brush
# Get the top - most (non-division) ancestor, or self
def GetTopAncestor(self):
"""
Return the top-most ancestor of this shape (the root of
the composite).
"""
if not self.GetParent():
return self
if isinstance(self.GetParent(), DivisionShape):
return self
return self.GetParent().GetTopAncestor()
# Region functions
def SetFont(self, the_font, regionId = 0):
"""
Set the font for the specified text region.
:param `the_font`: an instance of :class:`Font` ???
:param `regionId`: the region identifier
"""
self._font = the_font
if regionId < len(self._regions):
self._regions[regionId].SetFont(the_font)
def GetFont(self, regionId = 0):
"""
Get the font for the specified text region.
:param `regionId`: the region identifier
"""
if regionId >= len(self._regions):
return None
return self._regions[regionId].GetFont()
def SetFormatMode(self, mode, regionId = 0):
"""
Set the format mode of the region.
:param `mode`: can be a bit list of the following
============================== ==============================
Format mode Description
============================== ==============================
`FORMAT_NONE` No formatting
`FORMAT_CENTRE_HORIZ` Horizontal centring
`FORMAT_CENTRE_VERT` Vertical centring
============================== ==============================
:param `regionId`: the region identifier, default=0
"""
if regionId < len(self._regions):
self._regions[regionId].SetFormatMode(mode)
def GetFormatMode(self, regionId = 0):
"""
Get the format mode.
:param `regionId`: the region identifier, default=0
"""
if regionId >= len(self._regions):
return 0
return self._regions[regionId].GetFormatMode()
def SetTextColour(self, the_colour, regionId = 0):
"""
Set the colour for the specified text region.
:param str `the_colour`: a valid colour name,
see :class:`ColourDatabase`
:param `regionId`: the region identifier
"""
self._textColour = wx.TheColourDatabase.Find(the_colour)
self._textColourName = the_colour
if regionId < len(self._regions):
self._regions[regionId].SetColour(the_colour)
def GetTextColour(self, regionId = 0):
"""
Get the colour for the specified text region.
:param `regionId`: the region identifier
"""
if regionId >= len(self._regions):
return ""
return self._regions[regionId].GetColour()
def SetRegionName(self, name, regionId = 0):
"""
Set the name for this region.
:param str `name`: the name to set
:param `regionId`: the region identifier
:note: The name for a region is unique within the scope of the whole
composite, whereas a region id is unique only for a single image.
"""
if regionId < len(self._regions):
self._regions[regionId].SetName(name)
def GetRegionName(self, regionId = 0):
"""
Get the region's name.
:param `regionId`: the region identifier
:note: A region's name can be used to uniquely determine a region within
an entire composite image hierarchy. See also
:meth:`~lib.ogl.Shape.SetRegionName`.
"""
if regionId >= len(self._regions):
return ""
return self._regions[regionId].GetName()
def GetRegionId(self, name):
"""
Get the region's identifier by name.
:param str `name`: the regions name
:note: This is not unique for within an entire composite, but is unique
for the image.
"""
for i, r in enumerate(self._regions):
if r.GetName() == name:
return i
return -1
# Name all _regions in all subimages recursively
def NameRegions(self, parentName=""):
"""
Make unique names for all the regions in a shape or composite shape.
:param str `parentName`: a prefix for the region names
"""
n = self.GetNumberOfTextRegions()
for i in range(n):
if parentName:
buff = parentName+"."+str(i)
else:
buff = str(i)
self.SetRegionName(buff, i)
for j, child in enumerate(self._children):
if parentName:
buff = parentName+"."+str(j)
else:
buff = str(j)
child.NameRegions(buff)
# Get a region by name, possibly looking recursively into composites
def FindRegion(self, name):
"""
Find the actual image ('this' if non-composite) and region id
for the given region name.
:param str `name`: the region name
"""
id = self.GetRegionId(name)
if id > -1:
return self, id
for child in self._children:
actualImage, regionId = child.FindRegion(name)
if actualImage:
return actualImage, regionId
return None, -1
# Finds all region names for this image (composite or simple).
def FindRegionNames(self):
"""Get a list of all region names for this image (composite or simple)."""
list = []
n = self.GetNumberOfTextRegions()
for i in range(n):
list.append(self.GetRegionName(i))
for child in self._children:
list += child.FindRegionNames()
return list
def AssignNewIds(self):
"""Assign new ids to this image and its children."""
self._id = wx.NewId()
for child in self._children:
child.AssignNewIds()
def OnDraw(self, dc):
"""not implemented???"""
pass
def OnMoveLinks(self, dc):
"""The move links handler."""
# Want to set the ends of all attached links
# to point to / from this object
for line in self._lines:
line.GetEventHandler().OnMoveLink(dc)
def OnDrawContents(self, dc):
"""The draw contents handler."""
if not self._regions:
return
bound_x, bound_y = self.GetBoundingBoxMin()
if self._pen:
dc.SetPen(self._pen)
for region in self._regions:
if region.GetFont():
dc.SetFont(region.GetFont())
dc.SetTextForeground(region.GetActualColourObject())
dc.SetBackgroundMode(wx.TRANSPARENT)
if not self._formatted:
CentreText(dc, region.GetFormattedText(), self._xpos, self._ypos, bound_x - 2 * self._textMarginX, bound_y - 2 * self._textMarginY, region.GetFormatMode())
self._formatted = True
if not self.GetDisableLabel():
DrawFormattedText(dc, region.GetFormattedText(), self._xpos, self._ypos, bound_x - 2 * self._textMarginX, bound_y - 2 * self._textMarginY, region.GetFormatMode())
def DrawContents(self, dc):
"""
Draw the internal graphic of the shape (such as text).
Do not override this function: override OnDrawContents, which
is called by this function.
"""
self.GetEventHandler().OnDrawContents(dc)
def OnSize(self, x, y):
"""not implemented???"""
pass
def OnMovePre(self, dc, x, y, old_x, old_y, display = True):
return True
def OnErase(self, dc):
"""The erase handler."""
if not self._visible:
return
# Erase links
for line in self._lines:
line.GetEventHandler().OnErase(dc)
self.GetEventHandler().OnEraseContents(dc)
def OnEraseContents(self, dc):
"""The erase contents handler."""
if not self._visible:
return
xp, yp = self.GetX(), self.GetY()
minX, minY = self.GetBoundingBoxMin()
maxX, maxY = self.GetBoundingBoxMax()
topLeftX = xp - maxX / 2.0 - 2
topLeftY = yp - maxY / 2.0 - 2
penWidth = 0
if self._pen:
penWidth = self._pen.GetWidth()
dc.SetPen(self.GetBackgroundPen())
dc.SetBrush(self.GetBackgroundBrush())
dc.DrawRectangle(topLeftX - penWidth, topLeftY - penWidth, maxX + penWidth * 2 + 4, maxY + penWidth * 2 + 4)
def EraseLinks(self, dc, attachment = -1, recurse = False):
"""
Erase links attached to this shape, but do not repair damage
caused to other shapes.
:param `dc`: the device context
:param `attachment`: ???
:param `recurse`: if `True` recurse through the children
"""
if not self._visible:
return
for line in self._lines:
if attachment == -1 or (line.GetTo() == self and line.GetAttachmentTo() == attachment or line.GetFrom() == self and line.GetAttachmentFrom() == attachment):
line.GetEventHandler().OnErase(dc)
if recurse:
for child in self._children:
child.EraseLinks(dc, attachment, recurse)
def DrawLinks(self, dc, attachment = -1, recurse = False):
"""
Draws any lines linked to this shape.
:param `dc`: the device context
:param `attachment`: ???
:param `recurse`: if `True` recurse through the children
"""
if not self._visible:
return
for line in self._lines:
if attachment == -1 or (line.GetTo() == self and line.GetAttachmentTo() == attachment or line.GetFrom() == self and line.GetAttachmentFrom() == attachment):
line.Draw(dc)
if recurse:
for child in self._children:
child.DrawLinks(dc, attachment, recurse)
# Returns TRUE if pt1 <= pt2 in the sense that one point comes before
# another on an edge of the shape.
# attachmentPoint is the attachment point (= side) in question.
# This is the default, rectangular implementation.
def AttachmentSortTest(self, attachmentPoint, pt1, pt2):
"""
Return TRUE if pt1 is less than or equal to pt2, in the sense
that one point comes before another on an edge of the shape.
attachment is the attachment point (side) in question.
This function is used in Shape.MoveLineToNewAttachment to determine
the new line ordering.
"""
physicalAttachment = self.LogicalToPhysicalAttachment(attachmentPoint)
if physicalAttachment in [0, 2]:
return pt1[0] <= pt2[0]
elif physicalAttachment in [1, 3]:
return pt1[1] <= pt2[1]
return False
def MoveLineToNewAttachment(self, dc, to_move, x, y):
"""
Move the given line (which must already be attached to the shape)
to a different attachment point on the shape, or a different order
on the same attachment.
Calls Shape.AttachmentSortTest and then
ShapeEvtHandler.OnChangeAttachment.
"""
if self.GetAttachmentMode() == ATTACHMENT_MODE_NONE:
return False
# Is (x, y) on this object? If so, find the new attachment point
# the user has moved the point to
hit = self.HitTest(x, y)
if not hit:
return False
newAttachment, distance = hit
self.EraseLinks(dc)
if to_move.GetTo() == self:
oldAttachment = to_move.GetAttachmentTo()
else:
oldAttachment = to_move.GetAttachmentFrom()
# The links in a new ordering
# First, add all links to the new list
newOrdering = self._lines[:]
# Delete the line object from the list of links; we're going to move
# it to another position in the list
del newOrdering[newOrdering.index(to_move)]
old_x = -99999.9
old_y = -99999.9
found = False
for line in newOrdering:
if line.GetTo() == self and oldAttachment == line.GetAttachmentTo() or \
line.GetFrom() == self and oldAttachment == line.GetAttachmentFrom():
startX, startY, endX, endY = line.GetEnds()
if line.GetTo() == self:
xp = endX
yp = endY
else:
xp = startX
yp = startY
thisPoint = wx.RealPoint(xp, yp)
lastPoint = wx.RealPoint(old_x, old_y)
newPoint = wx.RealPoint(x, y)
if self.AttachmentSortTest(newAttachment, newPoint, thisPoint) and self.AttachmentSortTest(newAttachment, lastPoint, newPoint):
found = True
newOrdering.insert(newOrdering.index(line), to_move)
old_x = xp
old_y = yp
if found:
break
if not found:
newOrdering.append(to_move)
self.GetEventHandler().OnChangeAttachment(newAttachment, to_move, newOrdering)
return True
def OnChangeAttachment(self, attachment, line, ordering):
"""Change attachment handler."""
if line.GetTo() == self:
line.SetAttachmentTo(attachment)
else:
line.SetAttachmentFrom(attachment)
self.ApplyAttachmentOrdering(ordering)
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
self.MoveLinks(dc)
if not self.GetCanvas().GetQuickEditMode():
self.GetCanvas().Redraw(dc)
# Reorders the lines according to the given list
def ApplyAttachmentOrdering(self, linesToSort):
"""
Apply the line ordering in linesToSort to the shape, to reorder
the way lines are attached.
"""
linesStore = self._lines[:]
self._lines = []
for line in linesToSort:
if line in linesStore:
del linesStore[linesStore.index(line)]
self._lines.append(line)
# Now add any lines that haven't been listed in linesToSort
self._lines += linesStore
def SortLines(self, attachment, linesToSort):
"""
Reorder the lines coming into the node image at this attachment
position, in the order in which they appear in linesToSort.
Any remaining lines not in the list will be added to the end.
"""
# This is a temporary store of all the lines at this attachment
# point. We'll tick them off as we've processed them.
linesAtThisAttachment = []
for line in self._lines[:]:
if line.GetTo() == self and line.GetAttachmentTo() == attachment or \
line.GetFrom() == self and line.GetAttachmentFrom() == attachment:
linesAtThisAttachment.append(line)
del self._lines[self._lines.index(line)]
for line in linesToSort:
if line in linesAtThisAttachment:
# Done this one
del linesAtThisAttachment[linesAtThisAttachment.index(line)]
self._lines.append(line)
# Now add any lines that haven't been listed in linesToSort
self._lines += linesAtThisAttachment
def OnHighlight(self, dc):
"""not implemented???"""
pass
def OnLeftClick(self, x, y, keys = 0, attachment = 0):
"""The left click handler."""
if self._sensitivity & OP_CLICK_LEFT != OP_CLICK_LEFT:
if self._parent:
attachment, dist = self._parent.HitTest(x, y)
self._parent.GetEventHandler().OnLeftClick(x, y, keys, attachment)
def OnRightClick(self, x, y, keys = 0, attachment = 0):
"""The right click handler."""
if self._sensitivity & OP_CLICK_RIGHT != OP_CLICK_RIGHT:
attachment, dist = self._parent.HitTest(x, y)
self._parent.GetEventHandler().OnRightClick(x, y, keys, attachment)
def OnDragLeft(self, draw, x, y, keys = 0, attachment = 0):
"""The drag left handler."""
if self._sensitivity & OP_DRAG_LEFT != OP_DRAG_LEFT:
if self._parent:
hit = self._parent.HitTest(x, y)
if hit:
attachment, dist = hit
self._parent.GetEventHandler().OnDragLeft(draw, x, y, keys, attachment)
return
# use the DCOverlay stuff, note that drawing is done to the ClientDC
dc = wx.ClientDC(self.GetCanvas())
odc = wx.DCOverlay(self.GetCanvas()._Overlay, dc)
dc.SetLogicalFunction(OGLRBLF)
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
xx = x + DragOffsetX
yy = y + DragOffsetY
xx, yy = self._canvas.Snap(xx, yy)
w, h = self.GetBoundingBoxMax()
self.GetEventHandler().OnDrawOutline(dc, xx, yy, w, h)
def OnBeginDragLeft(self, x, y, keys = 0, attachment = 0):
"""The begin drag left handler."""
global DragOffsetX, DragOffsetY
if self._sensitivity & OP_DRAG_LEFT != OP_DRAG_LEFT:
if self._parent:
hit = self._parent.HitTest(x, y)
if hit:
attachment, dist = hit
self._parent.GetEventHandler().OnBeginDragLeft(x, y, keys, attachment)
return
DragOffsetX = self._xpos - x
DragOffsetY = self._ypos - y
# use the DCOverlay stuff, note that drawing is done to the ClientDC
dc = wx.ClientDC(self.GetCanvas())
odc = wx.DCOverlay(self.GetCanvas()._Overlay, dc)
dc.SetLogicalFunction(OGLRBLF)
# New policy: don't erase shape until end of drag.
# self.Erase(dc)
xx = x + DragOffsetX
yy = y + DragOffsetY
xx, yy = self._canvas.Snap(xx, yy)
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
w, h = self.GetBoundingBoxMax()
self.GetEventHandler().OnDrawOutline(dc, xx, yy, w, h)
self._canvas.CaptureMouse()
def OnEndDragLeft(self, x, y, keys = 0, attachment = 0):
"""The end drag left handler."""
if self._canvas.HasCapture():
self._canvas.ReleaseMouse()
if self._sensitivity & OP_DRAG_LEFT != OP_DRAG_LEFT:
if self._parent:
hit = self._parent.HitTest(x, y)
if hit:
attachment, dist = hit
self._parent.GetEventHandler().OnEndDragLeft(x, y, keys, attachment)
return
# use the DCOverlay stuff, note that drawing is done to the ClientDC
dc = wx.ClientDC(self.GetCanvas())
odc = wx.DCOverlay(self.GetCanvas()._Overlay, dc)
dc.SetLogicalFunction(wx.COPY)
xx = x + DragOffsetX
yy = y + DragOffsetY
xx, yy = self._canvas.Snap(xx, yy)
# New policy: erase shape at end of drag.
self.Erase(dc)
self.Move(dc, xx, yy)
if self._canvas and not self._canvas.GetQuickEditMode():
self._canvas.Redraw(dc)
def OnDragRight(self, draw, x, y, keys = 0, attachment = 0):
"""The drag right handler."""
if self._sensitivity & OP_DRAG_RIGHT != OP_DRAG_RIGHT:
if self._parent:
attachment, dist = self._parent.HitTest(x, y)
self._parent.GetEventHandler().OnDragRight(draw, x, y, keys, attachment)
return
def OnBeginDragRight(self, x, y, keys = 0, attachment = 0):
"""The begin drag right handler."""
if self._sensitivity & OP_DRAG_RIGHT != OP_DRAG_RIGHT:
if self._parent:
attachment, dist = self._parent.HitTest(x, y)
self._parent.GetEventHandler().OnBeginDragRight(x, y, keys, attachment)
return
def OnEndDragRight(self, x, y, keys = 0, attachment = 0):
"""The end drag right handler."""
if self._sensitivity & OP_DRAG_RIGHT != OP_DRAG_RIGHT:
if self._parent:
attachment, dist = self._parent.HitTest(x, y)
self._parent.GetEventHandler().OnEndDragRight(x, y, keys, attachment)
return
def OnDrawOutline(self, dc, x, y, w, h):
"""The draw outline handler."""
points = [[x - w / 2.0, y - h / 2.0],
[x + w / 2.0, y - h / 2.0],
[x + w / 2.0, y + h / 2.0],
[x - w / 2.0, y + h / 2.0],
[x - w / 2.0, y - h / 2.0],
]
dc.DrawLines(points)
def Attach(self, can):
"""Set the shape's internal canvas pointer to point to the given canvas."""
self._canvas = can
def Detach(self):
"""Disassociates the shape from its canvas."""
self._canvas = None
def Move(self, dc, x, y, display = True):
"""
Move the shape to the given position.
:param `dc`: the device context
:param `x`: the x position
:param `y`: the y position
:param `display`: if `True` redraw
"""
old_x = self._xpos
old_y = self._ypos
if not self.GetEventHandler().OnMovePre(dc, x, y, old_x, old_y, display):
return
self._xpos, self._ypos = x, y
self.ResetControlPoints()
if display:
self.Draw(dc)
self.MoveLinks(dc)
self.GetEventHandler().OnMovePost(dc, x, y, old_x, old_y, display)
def MoveLinks(self, dc):
"""Redraw all the lines attached to the shape."""
self.GetEventHandler().OnMoveLinks(dc)
def Draw(self, dc):
"""
Draw the whole shape and any lines attached to it.
Do not override this function: override OnDraw, which is called
by this function.
"""
if self._visible:
self.GetEventHandler().OnDraw(dc)
self.GetEventHandler().OnDrawContents(dc)
self.GetEventHandler().OnDrawControlPoints(dc)
self.GetEventHandler().OnDrawBranches(dc)
def Flash(self):
"""Flash the shape."""
if self.GetCanvas():
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
dc.SetLogicalFunction(OGLRBLF)
self.Draw(dc)
dc.SetLogicalFunction(wx.COPY)
self.Draw(dc)
def Show(self, show):
"""Set a flag indicating whether the shape should be drawn."""
self._visible = show
for child in self._children:
child.Show(show)
def Erase(self, dc):
"""
Erase the shape.
Does not repair damage caused to other shapes.
"""
self.GetEventHandler().OnErase(dc)
self.GetEventHandler().OnEraseControlPoints(dc)
self.GetEventHandler().OnDrawBranches(dc, erase = True)
def EraseContents(self, dc):
"""
Erase the shape contents, that is, the area within the shape's
minimum bounding box.
"""
self.GetEventHandler().OnEraseContents(dc)
def AddText(self, string):
"""Add a line of text to the shape's default text region."""
if not self._regions:
return
region = self._regions[0]
#region.ClearText()
new_line = ShapeTextLine(0, 0, string)
text = region.GetFormattedText()
text.append(new_line)
self._formatted = False
def SetSize(self, x, y, recursive = True):
"""Set the shape's size.
:param `x`: the x position
:param `y`: the y position
:param `recursive`: not used
"""
self.SetAttachmentSize(x, y)
self.SetDefaultRegionSize()
def SetAttachmentSize(self, w, h):
"""
Set the attachment size.
:param `w`: width
:param `h`: height
"""
width, height = self.GetBoundingBoxMin()
if width == 0:
scaleX = 1.0
else:
scaleX = float(w) / width
if height == 0:
scaleY = 1.0
else:
scaleY = float(h) / height
for point in self._attachmentPoints:
point._x = point._x * scaleX
point._y = point._y * scaleY
# Add line FROM this object
def AddLine(self, line, other, attachFrom = 0, attachTo = 0, positionFrom = -1, positionTo = -1):
"""
Add a line between this shape and the given other shape, at the
specified attachment points.
:param `line`: the line an instance of :class:`~lib.ogl.LineShape`
:param `other`: the other shape, an instance of :class:`Shape`
:param `attachFrom`: the attachment from point ???
:param `attachTo`: the attachment to point ???
:param `positionFrom`: the from position
:param `positionTo`: the to position
:note: The position in the list of lines at each end can also be
specified, so that the line will be drawn at a particular point on
its attachment point.
"""
if positionFrom == -1:
if not line in self._lines:
self._lines.append(line)
else:
# Don't preserve old ordering if we have new ordering instructions
try:
self._lines.remove(line)
except ValueError:
pass
if positionFrom < len(self._lines):
self._lines.insert(positionFrom, line)
else:
self._lines.append(line)
if positionTo == -1:
if not other in other._lines:
other._lines.append(line)
else:
# Don't preserve old ordering if we have new ordering instructions
try:
other._lines.remove(line)
except ValueError:
pass
if positionTo < len(other._lines):
other._lines.insert(positionTo, line)
else:
other._lines.append(line)
line.SetFrom(self)
line.SetTo(other)
line.SetAttachments(attachFrom, attachTo)
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
self.MoveLinks(dc)
def RemoveLine(self, line):
"""
Remove the given line from the shape's list of attached lines.
:param `line`: an instance of :class:`~lib.ogl.LineShape`
"""
if line.GetFrom() == self:
line.GetTo()._lines.remove(line)
else:
line.GetFrom()._lines.remove(line)
self._lines.remove(line)
# Default - make 6 control points
def MakeControlPoints(self):
"""
Make a list of control points (draggable handles) appropriate to
the shape.
"""
maxX, maxY = self.GetBoundingBoxMax()
minX, minY = self.GetBoundingBoxMin()
widthMin = minX + CONTROL_POINT_SIZE + 2
heightMin = minY + CONTROL_POINT_SIZE + 2
# Offsets from main object
top = -heightMin / 2.0
bottom = heightMin / 2.0 + (maxY - minY)
left = -widthMin / 2.0
right = widthMin / 2.0 + (maxX - minX)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, left, top, CONTROL_POINT_DIAGONAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, 0, top, CONTROL_POINT_VERTICAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, right, top, CONTROL_POINT_DIAGONAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, right, 0, CONTROL_POINT_HORIZONTAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, right, bottom, CONTROL_POINT_DIAGONAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, 0, bottom, CONTROL_POINT_VERTICAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, left, bottom, CONTROL_POINT_DIAGONAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
control = ControlPoint(self._canvas, self, CONTROL_POINT_SIZE, left, 0, CONTROL_POINT_HORIZONTAL)
self._canvas.AddShape(control)
self._controlPoints.append(control)
def MakeMandatoryControlPoints(self):
"""
Make the mandatory control points.
For example, the control point on a dividing line should appear even
if the divided rectangle shape's handles should not appear (because
it is the child of a composite, and children are not resizable).
"""
for child in self._children:
child.MakeMandatoryControlPoints()
def ResetMandatoryControlPoints(self):
"""Reset the mandatory control points."""
for child in self._children:
child.ResetMandatoryControlPoints()
def ResetControlPoints(self):
"""
Reset the positions of the control points (for instance when the
shape's shape has changed).
"""
self.ResetMandatoryControlPoints()
if len(self._controlPoints) == 0:
return
maxX, maxY = self.GetBoundingBoxMax()
minX, minY = self.GetBoundingBoxMin()
widthMin = minX + CONTROL_POINT_SIZE + 2
heightMin = minY + CONTROL_POINT_SIZE + 2
# Offsets from main object
top = -heightMin / 2.0
bottom = heightMin / 2.0 + (maxY - minY)
left = -widthMin / 2.0
right = widthMin / 2.0 + (maxX - minX)
self._controlPoints[0]._xoffset = left
self._controlPoints[0]._yoffset = top
self._controlPoints[1]._xoffset = 0
self._controlPoints[1]._yoffset = top
self._controlPoints[2]._xoffset = right
self._controlPoints[2]._yoffset = top
self._controlPoints[3]._xoffset = right
self._controlPoints[3]._yoffset = 0
self._controlPoints[4]._xoffset = right
self._controlPoints[4]._yoffset = bottom
self._controlPoints[5]._xoffset = 0
self._controlPoints[5]._yoffset = bottom
self._controlPoints[6]._xoffset = left
self._controlPoints[6]._yoffset = bottom
self._controlPoints[7]._xoffset = left
self._controlPoints[7]._yoffset = 0
def DeleteControlPoints(self, dc = None):
"""
Delete the control points (or handles) for the shape.
Does not redraw the shape.
"""
for control in self._controlPoints[:]:
if dc:
control.GetEventHandler().OnErase(dc)
control.Delete()
self._controlPoints.remove(control)
self._controlPoints = []
# Children of divisions are contained objects,
# so stop here
if not isinstance(self, DivisionShape):
for child in self._children:
child.DeleteControlPoints(dc)
def OnDrawControlPoints(self, dc):
"""The draw control points handler."""
if not self._drawHandles:
return
dc.SetBrush(wx.BLACK_BRUSH)
dc.SetPen(wx.BLACK_PEN)
for control in self._controlPoints:
control.Draw(dc)
# Children of divisions are contained objects,
# so stop here.
# This test bypasses the type facility for speed
# (critical when drawing)
if not isinstance(self, DivisionShape):
for child in self._children:
child.GetEventHandler().OnDrawControlPoints(dc)
def OnEraseControlPoints(self, dc):
"""The erase control points handler."""
for control in self._controlPoints:
control.Erase(dc)
if not isinstance(self, DivisionShape):
for child in self._children:
child.GetEventHandler().OnEraseControlPoints(dc)
def Select(self, select, dc = None):
"""
Select or deselect the given shape, drawing or erasing control points
(handles) as necessary.
:param `select`: `True` to select
:param `dc`: the device context
"""
self._selected = select
if select:
self.MakeControlPoints()
# Children of divisions are contained objects,
# so stop here
if not isinstance(self, DivisionShape):
for child in self._children:
child.MakeMandatoryControlPoints()
if dc:
self.GetEventHandler().OnDrawControlPoints(dc)
else:
self.DeleteControlPoints(dc)
if not isinstance(self, DivisionShape):
for child in self._children:
child.DeleteControlPoints(dc)
def Selected(self):
"""`True` if the shape is currently selected."""
return self._selected
def AncestorSelected(self):
"""`True` if the shape's ancestor is currently selected."""
if self._selected:
return True
if not self.GetParent():
return False
return self.GetParent().AncestorSelected()
def GetNumberOfAttachments(self):
"""Get the number of attachment points for this shape."""
# Should return the MAXIMUM attachment point id here,
# so higher-level functions can iterate through all attachments,
# even if they're not contiguous.
if len(self._attachmentPoints) == 0:
return 4
else:
maxN = 3
for point in self._attachmentPoints:
if point._id > maxN:
maxN = point._id
return maxN + 1
def AttachmentIsValid(self, attachment):
"""`True` if attachment is a valid attachment point."""
if len(self._attachmentPoints) == 0:
return attachment in range(4)
for point in self._attachmentPoints:
if point._id == attachment:
return True
return False
def GetAttachmentPosition(self, attachment, nth = 0, no_arcs = 1, line = None):
"""
Get the position at which the given attachment point should be drawn.
:param `attachment`: the attachment ???
:param `nth`: get nth attachment ???
:param `no_arcs`: ???
:param `line`: ???
If attachment isn't found among the attachment points of the shape,
returns None.
"""
if self._attachmentMode == ATTACHMENT_MODE_NONE:
return self._xpos, self._ypos
elif self._attachmentMode == ATTACHMENT_MODE_BRANCHING:
pt, stemPt = self.GetBranchingAttachmentPoint(attachment, nth)
return pt[0], pt[1]
elif self._attachmentMode == ATTACHMENT_MODE_EDGE:
if len(self._attachmentPoints):
for point in self._attachmentPoints:
if point._id == attachment:
return self._xpos + point._x, self._ypos + point._y
return None
else:
# Assume is rectangular
w, h = self.GetBoundingBoxMax()
top = self._ypos + h / 2.0
bottom = self._ypos - h / 2.0
left = self._xpos - w / 2.0
right = self._xpos + w / 2.0
# wtf?
line and line.IsEnd(self)
physicalAttachment = self.LogicalToPhysicalAttachment(attachment)
# Simplified code
if physicalAttachment == 0:
pt = self.CalcSimpleAttachment((left, bottom), (right, bottom), nth, no_arcs, line)
elif physicalAttachment == 1:
pt = self.CalcSimpleAttachment((right, bottom), (right, top), nth, no_arcs, line)
elif physicalAttachment == 2:
pt = self.CalcSimpleAttachment((left, top), (right, top), nth, no_arcs, line)
elif physicalAttachment == 3:
pt = self.CalcSimpleAttachment((left, bottom), (left, top), nth, no_arcs, line)
else:
return None
return pt[0], pt[1]
return None
def GetBoundingBoxMax(self):
"""
Get the maximum bounding box for the shape, taking into account
external features such as shadows.
"""
ww, hh = self.GetBoundingBoxMin()
if self._shadowMode != SHADOW_NONE:
ww += self._shadowOffsetX
hh += self._shadowOffsetY
return ww, hh
def GetBoundingBoxMin(self):
"""
Get the minimum bounding box for the shape, that defines the area
available for drawing the contents (such as text).
Must be overridden.
"""
return 0, 0
def HasDescendant(self, image):
"""
Is image a descendant of this composite.
:param `image`: the image, is this a shape???
:returns: `True` if it is a descendant
"""
if image == self:
return True
for child in self._children:
if child.HasDescendant(image):
return True
return False
# Assuming the attachment lies along a vertical or horizontal line,
# calculate the position on that point.
def CalcSimpleAttachment(self, pt1, pt2, nth, noArcs, line):
"""
Assuming the attachment lies along a vertical or horizontal line,
calculate the position on that point.
:param `pt1`: The first point of the line repesenting the edge of
the shape
:param `pt2`: The second point of the line representing the edge of
the shape
:param `nth`: The position on the edge (for example there may be 6
lines at this attachment point, and this may be the 2nd line.
:param `noArcs`: The number of lines at this edge.
:param `line`: The line shape.
:note: This function expects the line to be either vertical or horizontal,
and determines which.
"""
isEnd = line and line.IsEnd(self)
# Are we horizontal or vertical?
isHorizontal = RoughlyEqual(pt1[1], pt2[1])
if isHorizontal:
if pt1[0] > pt2[0]:
firstPoint = pt2
secondPoint = pt1
else:
firstPoint = pt1
secondPoint = pt2
if self._spaceAttachments:
if line and line.GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE:
# Align line according to the next handle along
point = line.GetNextControlPoint(self)
if point[0] < firstPoint[0]:
x = firstPoint[0]
elif point[0] > secondPoint[0]:
x = secondPoint[0]
else:
x = point[0]
else:
x = firstPoint[0] + (nth + 1) * (secondPoint[0] - firstPoint[0]) / (noArcs + 1.0)
else:
x = (secondPoint[0] - firstPoint[0]) / 2.0 # Midpoint
y = pt1[1]
else:
assert RoughlyEqual(pt1[0], pt2[0])
if pt1[1] > pt2[1]:
firstPoint = pt2
secondPoint = pt1
else:
firstPoint = pt1
secondPoint = pt2
if self._spaceAttachments:
if line and line.GetAlignmentType(isEnd) == LINE_ALIGNMENT_TO_NEXT_HANDLE:
# Align line according to the next handle along
point = line.GetNextControlPoint(self)
if point[1] < firstPoint[1]:
y = firstPoint[1]
elif point[1] > secondPoint[1]:
y = secondPoint[1]
else:
y = point[1]
else:
y = firstPoint[1] + (nth + 1) * (secondPoint[1] - firstPoint[1]) / (noArcs + 1.0)
else:
y = (secondPoint[1] - firstPoint[1]) / 2.0 # Midpoint
x = pt1[0]
return x, y
def GetLinePosition(self, line):
"""
Get the zero-based position of line in the list of lines
for this shape.
:param `line`: line to find position for
"""
try:
return self._lines.index(line)
except:
return 0
# |________|
# | <- root
# | <- neck
# shoulder1 ->---------<- shoulder2
# | | | | |
# <- branching attachment point N-1
def GetBranchingAttachmentInfo(self, attachment):
"""
Get information about where branching connections go.
:param `attachment`: ???
:returns: `False` if there are no lines at this attachment.
"""
physicalAttachment = self.LogicalToPhysicalAttachment(attachment)
# Number of lines at this attachment
lineCount = self.GetAttachmentLineCount(attachment)
if not lineCount:
return False
totalBranchLength = self._branchSpacing * (lineCount - 1)
root = self.GetBranchingAttachmentRoot(attachment)
neck = wx.RealPoint()
shoulder1 = wx.RealPoint()
shoulder2 = wx.RealPoint()
# Assume that we have attachment points 0 to 3: top, right, bottom, left
if physicalAttachment == 0:
neck[0] = self.GetX()
neck[1] = root[1] - self._branchNeckLength
shoulder1[0] = root[0] - totalBranchLength / 2.0
shoulder2[0] = root[0] + totalBranchLength / 2.0
shoulder1[1] = neck[1]
shoulder2[1] = neck[1]
elif physicalAttachment == 1:
neck[0] = root[0] + self._branchNeckLength
neck[1] = root[1]
shoulder1[0] = neck[0]
shoulder2[0] = neck[0]
shoulder1[1] = neck[1] - totalBranchLength / 2.0
shoulder1[1] = neck[1] + totalBranchLength / 2.0
elif physicalAttachment == 2:
neck[0] = self.GetX()
neck[1] = root[1] + self._branchNeckLength
shoulder1[0] = root[0] - totalBranchLength / 2.0
shoulder2[0] = root[0] + totalBranchLength / 2.0
shoulder1[1] = neck[1]
shoulder2[1] = neck[1]
elif physicalAttachment == 3:
neck[0] = root[0] - self._branchNeckLength
neck[1] = root[1]
shoulder1[0] = neck[0]
shoulder2[0] = neck[0]
shoulder1[1] = neck[1] - totalBranchLength / 2.0
shoulder2[1] = neck[1] + totalBranchLength / 2.0
else:
raise "Unrecognised attachment point in GetBranchingAttachmentInfo"
return root, neck, shoulder1, shoulder2
def GetBranchingAttachmentPoint(self, attachment, n):
"""
Get branching attachment point.
:param `attachment`: ???
:param `n`: ???
"""
physicalAttachment = self.LogicalToPhysicalAttachment(attachment)
root, neck, shoulder1, shoulder2 = self.GetBranchingAttachmentInfo(attachment)
pt = wx.RealPoint()
stemPt = wx.RealPoint()
if physicalAttachment == 0:
pt[1] = neck[1] - self._branchStemLength
pt[0] = shoulder1[0] + n * self._branchSpacing
stemPt[0] = pt[0]
stemPt[1] = neck[1]
elif physicalAttachment == 2:
pt[1] = neck[1] + self._branchStemLength
pt[0] = shoulder1[0] + n * self._branchStemLength
stemPt[0] = pt[0]
stemPt[1] = neck[1]
elif physicalAttachment == 1:
pt[0] = neck[0] + self._branchStemLength
pt[1] = shoulder1[1] + n * self._branchSpacing
stemPt[0] = neck[0]
stemPt[1] = pt[1]
elif physicalAttachment == 3:
pt[0] = neck[0] - self._branchStemLength
pt[1] = shoulder1[1] + n * self._branchSpacing
stemPt[0] = neck[0]
stemPt[1] = pt[1]
else:
raise "Unrecognised attachment point in GetBranchingAttachmentPoint"
return pt, stemPt
def GetAttachmentLineCount(self, attachment):
"""
Get the number of lines at this attachment position.
:param `attachment`: ???
:returns: the count of lines at this position
"""
count = 0
for lineShape in self._lines:
if lineShape.GetFrom() == self and lineShape.GetAttachmentFrom() == attachment:
count += 1
elif lineShape.GetTo() == self and lineShape.GetAttachmentTo() == attachment:
count += 1
return count
def GetBranchingAttachmentRoot(self, attachment):
"""
Get the root point at the given attachment.
:param `attachment`: ???
"""
physicalAttachment = self.LogicalToPhysicalAttachment(attachment)
root = wx.RealPoint()
width, height = self.GetBoundingBoxMax()
# Assume that we have attachment points 0 to 3: top, right, bottom, left
if physicalAttachment == 0:
root[0] = self.GetX()
root[1] = self.GetY() - height / 2.0
elif physicalAttachment == 1:
root[0] = self.GetX() + width / 2.0
root[1] = self.GetY()
elif physicalAttachment == 2:
root[0] = self.GetX()
root[1] = self.GetY() + height / 2.0
elif physicalAttachment == 3:
root[0] = self.GetX() - width / 2.0
root[1] = self.GetY()
else:
raise "Unrecognised attachment point in GetBranchingAttachmentRoot"
return root
# Draw or erase the branches (not the actual arcs though)
def OnDrawBranchesAttachment(self, dc, attachment, erase = False):
"""The draw branches attachment handler."""
count = self.GetAttachmentLineCount(attachment)
if count == 0:
return
root, neck, shoulder1, shoulder2 = self.GetBranchingAttachmentInfo(attachment)
if erase:
dc.SetPen(wx.WHITE_PEN)
dc.SetBrush(wx.WHITE_BRUSH)
else:
dc.SetPen(wx.BLACK_PEN)
dc.SetBrush(wx.BLACK_BRUSH)
# Draw neck
dc.DrawLine(root[0], root[1], neck[0], neck[1])
if count > 1:
# Draw shoulder-to-shoulder line
dc.DrawLine(shoulder1[0], shoulder1[1], shoulder2[0], shoulder2[1])
# Draw all the little branches
for i in range(count):
pt, stemPt = self.GetBranchingAttachmentPoint(attachment, i)
dc.DrawLine(stemPt[0], stemPt[1], pt[0], pt[1])
if self.GetBranchStyle() & BRANCHING_ATTACHMENT_BLOB and count > 1:
blobSize = 6.0
dc.DrawEllipse(stemPt[0] - blobSize / 2.0, stemPt[1] - blobSize / 2.0, blobSize, blobSize)
def OnDrawBranches(self, dc, erase = False):
"""The draw branches handler."""
if self._attachmentMode != ATTACHMENT_MODE_BRANCHING:
return
for i in range(self.GetNumberOfAttachments()):
self.OnDrawBranchesAttachment(dc, i, erase)
def GetAttachmentPositionEdge(self, attachment, nth = 0, no_arcs = 1, line = None):
"""
Only get the attachment position at the _edge_ of the shape,
ignoring branching mode. This is used e.g. to indicate the edge of
interest, not the point on the attachment branch.
:param `attachment`: the attachment ???
:param `nth`: get nth attachment ???
:param `no_arcs`: ???
:param `line`: ???
"""
oldMode = self._attachmentMode
# Calculate as if to edge, not branch
if self._attachmentMode == ATTACHMENT_MODE_BRANCHING:
self._attachmentMode = ATTACHMENT_MODE_EDGE
res = self.GetAttachmentPosition(attachment, nth, no_arcs, line)
self._attachmentMode = oldMode
return res
def PhysicalToLogicalAttachment(self, physicalAttachment):
"""
Rotate the standard attachment point from physical
(0 is always North) to logical (0 -> 1 if rotated by 90 degrees)
:param `physicalAttachment`: ???
"""
if RoughlyEqual(self.GetRotation(), 0):
i = physicalAttachment
elif RoughlyEqual(self.GetRotation(), math.pi / 2.0):
i = physicalAttachment - 1
elif RoughlyEqual(self.GetRotation(), math.pi):
i = physicalAttachment - 2
elif RoughlyEqual(self.GetRotation(), 3 * math.pi / 2.0):
i = physicalAttachment - 3
else:
# Can't handle -- assume the same
return physicalAttachment
if i < 0:
i += 4
return i
def LogicalToPhysicalAttachment(self, logicalAttachment):
"""
Rotate the standard attachment point from logical
to physical (0 is always North).
:param `logicalAttachment`: ???
"""
if RoughlyEqual(self.GetRotation(), 0):
i = logicalAttachment
elif RoughlyEqual(self.GetRotation(), math.pi / 2.0):
i = logicalAttachment + 1
elif RoughlyEqual(self.GetRotation(), math.pi):
i = logicalAttachment + 2
elif RoughlyEqual(self.GetRotation(), 3 * math.pi / 2.0):
i = logicalAttachment + 3
else:
return logicalAttachment
if i > 3:
i -= 4
return i
def Rotate(self, x, y, theta):
"""
Rotate about the given axis by the given amount in radians.
:param `x`: the x position
:param `y`: the y position
:param `theta`: the theta
"""
self._rotation = theta
if self._rotation < 0:
self._rotation += 2 * math.pi
elif self._rotation > 2 * math.pi:
self._rotation -= 2 * math.pi
def GetBackgroundPen(self):
"""Return pen of the right colour for the background."""
if self.GetCanvas():
return wx.Pen(self.GetCanvas().GetBackgroundColour(), 1, wx.PENSTYLE_SOLID)
return WhiteBackgroundPen
def GetBackgroundBrush(self):
"""Return brush of the right colour for the background."""
if self.GetCanvas():
return wx.Brush(self.GetCanvas().GetBackgroundColour(), wx.BRUSHSTYLE_SOLID)
return WhiteBackgroundBrush
def GetX(self):
"""Get the x position of the centre of the shape."""
return self._xpos
def GetY(self):
"""Get the y position of the centre of the shape."""
return self._ypos
def SetX(self, x):
"""
Set the x position of the shape.
:param `x`: the x position
"""
self._xpos = x
def SetY(self, y):
"""
Set the y position of the shape.
:param `y`: the y position
"""
self._ypos = y
def GetParent(self):
"""Get the parent of this shape, if it is part of a composite."""
return self._parent
def SetParent(self, p):
"""Set the parent
:param `p`: the parent
"""
self._parent = p
def GetChildren(self):
"""Get the list of children for this shape."""
return self._children
def GetDrawHandles(self):
"""Get the list of drawhandles."""
return self._drawHandles
def GetEventHandler(self):
"""Get the event handler for this shape."""
return self._eventHandler
def SetEventHandler(self, handler):
"""Set the event handler for this shape.
:param `handler`: an instance of :class:`ShapeEvtHandler`
"""
self._eventHandler = handler
def Recompute(self):
"""
Recomputes any constraints associated with the shape.
Normally applicable to CompositeShapes only, but harmless for
other classes of Shape.
"""
return True
def IsHighlighted(self):
"""
`True` if the shape is highlighted. Shape highlighting is unimplemented.
"""
return self._highlighted
def GetSensitivityFilter(self):
"""
Get the sensitivity filter, a bitlist of values.
See :meth:`Shape.SetSensitivityFilter`
"""
return self._sensitivity
def SetFixedSize(self, x, y):
"""
Set the shape to be fixed size.
:param `x`: the width
:param `y`: the height
"""
self._fixedWidth = x
self._fixedHeight = y
def GetFixedSize(self):
"""
Return flags indicating whether the shape is of fixed size in
either direction.
"""
return self._fixedWidth, self._fixedHeight
def GetFixedWidth(self):
"""`True` if the shape cannot be resized in the horizontal plane."""
return self._fixedWidth
def GetFixedHeight(self):
"""`True` if the shape cannot be resized in the vertical plane."""
return self._fixedHeight
def SetSpaceAttachments(self, sp):
"""
Indicate whether lines should be spaced out evenly at the point
they touch the node.
:param `sp`: if `True` space out evently, else they should join at a
single point.
"""
self._spaceAttachments = sp
def GetSpaceAttachments(self):
"""
Get whether lines should be spaced out evenly at the point they
touch the node (True), or whether they should join at a single point
(False).
"""
return self._spaceAttachments
def SetCentreResize(self, cr):
"""
Specify whether the shape is to be resized from the centre (the
centre stands still) or from the corner or side being dragged (the
other corner or side stands still).
"""
self._centreResize = cr
def GetCentreResize(self):
"""
`True` if the shape is to be resized from the centre (the centre stands
still), or `False` if from the corner or side being dragged (the other
corner or side stands still)
"""
return self._centreResize
def SetMaintainAspectRatio(self, ar):
"""
Set whether a shape that resizes should not change the aspect ratio
(width and height should be in the original proportion).
"""
self._maintainAspectRatio = ar
def GetMaintainAspectRatio(self):
"""`True` if shape keeps aspect ratio during resize."""
return self._maintainAspectRatio
def GetLines(self):
"""Return the list of lines connected to this shape."""
return self._lines
def SetDisableLabel(self, flag):
"""Set flag to `True` to stop the default region being shown."""
self._disableLabel = flag
def GetDisableLabel(self):
"""`True` if the default region will not be shown, `False` otherwise."""
return self._disableLabel
def SetAttachmentMode(self, mode):
"""
Set the attachment mode.
:param `mode`: if `True` attachment points will be significant when
drawing lines to and from this shape. If `False` lines will be drawn
as if to the centre of the shape.
"""
self._attachmentMode = mode
def GetAttachmentMode(self):
"""
Get the attachment mode.
See :meth:`Shape.SetAttachmentMode`
"""
return self._attachmentMode
def SetId(self, i):
"""Set the integer identifier for this shape."""
self._id = i
def GetId(self):
"""Get the integer identifier for this shape."""
return self._id
def IsShown(self):
"""
`True` if the shape is in a visible state, `False` otherwise.
:note: That this has nothing to do with whether the window is hidden
or the shape has scrolled off the canvas; it refers to the internal
visibility flag.
"""
return self._visible
def GetPen(self):
"""Get the pen used for drawing the shape's outline."""
return self._pen
def GetBrush(self):
"""Get the brush used for filling the shape."""
return self._brush
def GetNumberOfTextRegions(self):
"""Get the number of text regions for this shape."""
return len(self._regions)
def GetRegions(self):
"""Get the list of ShapeRegions."""
return self._regions
# Control points ('handles') redirect control to the actual shape, to
# make it easier to override sizing behaviour.
def OnSizingDragLeft(self, pt, draw, x, y, keys = 0, attachment = 0):
"""The sizing drag left handler."""
bound_x, bound_y = self.GetBoundingBoxMin()
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
dc.SetLogicalFunction(OGLRBLF)
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
if self.GetCentreResize():
# Maintain the same centre point
new_width = 2.0 * abs(x - self.GetX())
new_height = 2.0 * abs(y - self.GetY())
# Constrain sizing according to what control point you're dragging
if pt._type == CONTROL_POINT_HORIZONTAL:
if self.GetMaintainAspectRatio():
new_height = bound_y * (new_width / bound_x)
else:
new_height = bound_y
elif pt._type == CONTROL_POINT_VERTICAL:
if self.GetMaintainAspectRatio():
new_width = bound_x * (new_height / bound_y)
else:
new_width = bound_x
elif pt._type == CONTROL_POINT_DIAGONAL and (keys & KEY_SHIFT):
new_height = bound_y * (new_width / bound_x)
if self.GetFixedWidth():
new_width = bound_x
if self.GetFixedHeight():
new_height = bound_y
pt._controlPointDragEndWidth = new_width
pt._controlPointDragEndHeight = new_height
self.GetEventHandler().OnDrawOutline(dc, self.GetX(), self.GetY(), new_width, new_height)
else:
# Don't maintain the same centre point
newX1 = min(pt._controlPointDragStartX, x)
newY1 = min(pt._controlPointDragStartY, y)
newX2 = max(pt._controlPointDragStartX, x)
newY2 = max(pt._controlPointDragStartY, y)
if pt._type == CONTROL_POINT_HORIZONTAL:
newY1 = pt._controlPointDragStartY
newY2 = newY1 + pt._controlPointDragStartHeight
elif pt._type == CONTROL_POINT_VERTICAL:
newX1 = pt._controlPointDragStartX
newX2 = newX1 + pt._controlPointDragStartWidth
elif pt._type == CONTROL_POINT_DIAGONAL and (keys & KEY_SHIFT or self.GetMaintainAspectRatio()):
newH = (newX2 - newX1) * (float(pt._controlPointDragStartHeight) / pt._controlPointDragStartWidth)
if self.GetY() > pt._controlPointDragStartY:
newY2 = newY1 + newH
else:
newY1 = newY2 - newH
newWidth = float(newX2 - newX1)
newHeight = float(newY2 - newY1)
if pt._type == CONTROL_POINT_VERTICAL and self.GetMaintainAspectRatio():
newWidth = bound_x * (newHeight / bound_y)
if pt._type == CONTROL_POINT_HORIZONTAL and self.GetMaintainAspectRatio():
newHeight = bound_y * (newWidth / bound_x)
pt._controlPointDragPosX = newX1 + newWidth / 2.0
pt._controlPointDragPosY = newY1 + newHeight / 2.0
if self.GetFixedWidth():
newWidth = bound_x
if self.GetFixedHeight():
newHeight = bound_y
pt._controlPointDragEndWidth = newWidth
pt._controlPointDragEndHeight = newHeight
self.GetEventHandler().OnDrawOutline(dc, pt._controlPointDragPosX, pt._controlPointDragPosY, newWidth, newHeight)
def OnSizingBeginDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing begin drag left handler."""
self._canvas.CaptureMouse()
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
dc.SetLogicalFunction(OGLRBLF)
bound_x, bound_y = self.GetBoundingBoxMin()
self.GetEventHandler().OnBeginSize(bound_x, bound_y)
# Choose the 'opposite corner' of the object as the stationary
# point in case this is non-centring resizing.
if pt.GetX() < self.GetX():
pt._controlPointDragStartX = self.GetX() + bound_x / 2.0
else:
pt._controlPointDragStartX = self.GetX() - bound_x / 2.0
if pt.GetY() < self.GetY():
pt._controlPointDragStartY = self.GetY() + bound_y / 2.0
else:
pt._controlPointDragStartY = self.GetY() - bound_y / 2.0
if pt._type == CONTROL_POINT_HORIZONTAL:
pt._controlPointDragStartY = self.GetY() - bound_y / 2.0
elif pt._type == CONTROL_POINT_VERTICAL:
pt._controlPointDragStartX = self.GetX() - bound_x / 2.0
# We may require the old width and height
pt._controlPointDragStartWidth = bound_x
pt._controlPointDragStartHeight = bound_y
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
if self.GetCentreResize():
new_width = 2.0 * abs(x - self.GetX())
new_height = 2.0 * abs(y - self.GetY())
# Constrain sizing according to what control point you're dragging
if pt._type == CONTROL_POINT_HORIZONTAL:
if self.GetMaintainAspectRatio():
new_height = bound_y * (new_width / bound_x)
else:
new_height = bound_y
elif pt._type == CONTROL_POINT_VERTICAL:
if self.GetMaintainAspectRatio():
new_width = bound_x * (new_height / bound_y)
else:
new_width = bound_x
elif pt._type == CONTROL_POINT_DIAGONAL and (keys & KEY_SHIFT):
new_height = bound_y * (new_width / bound_x)
if self.GetFixedWidth():
new_width = bound_x
if self.GetFixedHeight():
new_height = bound_y
pt._controlPointDragEndWidth = new_width
pt._controlPointDragEndHeight = new_height
self.GetEventHandler().OnDrawOutline(dc, self.GetX(), self.GetY(), new_width, new_height)
else:
# Don't maintain the same centre point
newX1 = min(pt._controlPointDragStartX, x)
newY1 = min(pt._controlPointDragStartY, y)
newX2 = max(pt._controlPointDragStartX, x)
newY2 = max(pt._controlPointDragStartY, y)
if pt._type == CONTROL_POINT_HORIZONTAL:
newY1 = pt._controlPointDragStartY
newY2 = newY1 + pt._controlPointDragStartHeight
elif pt._type == CONTROL_POINT_VERTICAL:
newX1 = pt._controlPointDragStartX
newX2 = newX1 + pt._controlPointDragStartWidth
elif pt._type == CONTROL_POINT_DIAGONAL and (keys & KEY_SHIFT or self.GetMaintainAspectRatio()):
newH = (newX2 - newX1) * (float(pt._controlPointDragStartHeight) / pt._controlPointDragStartWidth)
if pt.GetY() > pt._controlPointDragStartY:
newY2 = newY1 + newH
else:
newY1 = newY2 - newH
newWidth = float(newX2 - newX1)
newHeight = float(newY2 - newY1)
if pt._type == CONTROL_POINT_VERTICAL and self.GetMaintainAspectRatio():
newWidth = bound_x * (newHeight / bound_y)
if pt._type == CONTROL_POINT_HORIZONTAL and self.GetMaintainAspectRatio():
newHeight = bound_y * (newWidth / bound_x)
pt._controlPointDragPosX = newX1 + newWidth / 2.0
pt._controlPointDragPosY = newY1 + newHeight / 2.0
if self.GetFixedWidth():
newWidth = bound_x
if self.GetFixedHeight():
newHeight = bound_y
pt._controlPointDragEndWidth = newWidth
pt._controlPointDragEndHeight = newHeight
self.GetEventHandler().OnDrawOutline(dc, pt._controlPointDragPosX, pt._controlPointDragPosY, newWidth, newHeight)
def OnSizingEndDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing end drag left handler."""
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
if self._canvas.HasCapture():
self._canvas.ReleaseMouse()
dc.SetLogicalFunction(wx.COPY)
self.Recompute()
self.ResetControlPoints()
self.Erase(dc)
self.SetSize(pt._controlPointDragEndWidth, pt._controlPointDragEndHeight)
# The next operation could destroy this control point (it does for
# label objects, via formatting the text), so save all values we're
# going to use, or we'll be accessing garbage.
#return
if self.GetCentreResize():
self.Move(dc, self.GetX(), self.GetY())
else:
self.Move(dc, pt._controlPointDragPosX, pt._controlPointDragPosY)
# Recursively redraw links if we have a composite
if len(self.GetChildren()):
self.DrawLinks(dc, -1, True)
width, height = self.GetBoundingBoxMax()
self.GetEventHandler().OnEndSize(width, height)
if not self._canvas.GetQuickEditMode() and pt._eraseObject:
self._canvas.Redraw(dc)
class RectangleShape(Shape):
"""
The :class:`RectangleShape` class has rounded or square corners.
"""
def __init__(self, w = 0.0, h = 0.0):
"""
Default class constructor
:param float `w`: the width
:param float `h`: the height
"""
Shape.__init__(self)
self._width = w
self._height = h
self._cornerRadius = 0.0
self.SetDefaultRegionSize()
def OnDraw(self, dc):
"""The draw handler."""
x1 = self._xpos - self._width / 2.0
y1 = self._ypos - self._height / 2.0
if self._shadowMode != SHADOW_NONE:
if self._shadowBrush:
dc.SetBrush(self._shadowBrush)
dc.SetPen(TransparentPen)
if self._cornerRadius:
dc.DrawRoundedRectangle(x1 + self._shadowOffsetX, y1 + self._shadowOffsetY, self._width, self._height, self._cornerRadius)
else:
dc.DrawRectangle(x1 + self._shadowOffsetX, y1 + self._shadowOffsetY, self._width, self._height)
if self._pen:
if self._pen.GetWidth() == 0:
dc.SetPen(TransparentPen)
else:
dc.SetPen(self._pen)
if self._brush:
dc.SetBrush(self._brush)
if self._cornerRadius:
dc.DrawRoundedRectangle(x1, y1, self._width, self._height, self._cornerRadius)
else:
dc.DrawRectangle(x1, y1, self._width, self._height)
def GetBoundingBoxMin(self):
"""Get the bounding box minimum."""
return self._width, self._height
def SetSize(self, x, y, recursive = False):
"""
Set the size.
:param `x`: the width
:param `y`: the height
:param `recursive`: not used
"""
self.SetAttachmentSize(x, y)
self._width = max(x, 1)
self._height = max(y, 1)
self.SetDefaultRegionSize()
def GetCornerRadius(self):
"""Get the radius of the rectangle's rounded corners."""
return self._cornerRadius
def SetCornerRadius(self, rad):
"""
Set the radius of the rectangle's rounded corners.
:param `rad`: If the radius is zero, a non-rounded rectangle will be
drawn. If the radius is negative, the value is the proportion of the
smaller dimension of the rectangle.
"""
self._cornerRadius = rad
# Assume (x1, y1) is centre of box (most generally, line end at box)
def GetPerimeterPoint(self, x1, y1, x2, y2):
"""
Get the perimeter point.
:param `x1`: ???
:param `y1`: ???
:param `x2`: ???
:param `y2`: ???
"""
bound_x, bound_y = self.GetBoundingBoxMax()
return FindEndForBox(bound_x, bound_y, self._xpos, self._ypos, x2, y2)
def GetWidth(self):
"""Get the width."""
return self._width
def GetHeight(self):
"""Get the height."""
return self._height
def SetWidth(self, w):
"""
Set the width.
:param `w`: width to be set
"""
self._width = w
def SetHeight(self, h):
"""
Set the heigth.
:param `h`: heigth to be set
"""
self._height = h
class PolygonShape(Shape):
"""
The :class:`PolygonShape` class shape is defined by a number of points
passed to the object's constructor. It can be used to create new shapes
such as diamonds and triangles.
"""
def __init__(self):
"""
Default class constructor
Does not follow above statement, should it? or is Create called
automagically?
"""
Shape.__init__(self)
self._points = None
self._originalPoints = None
def Create(self, the_points = None):
"""
Takes a list of :class:`Points` or tuples; each point is an offset
from the centre.
"""
self.ClearPoints()
if not the_points:
self._originalPoints = []
self._points = []
else:
self._originalPoints = the_points
# Duplicate the list of points
self._points = []
for point in the_points:
new_point = wx.Point(point[0], point[1])
self._points.append(new_point)
self.CalculateBoundingBox()
self._originalWidth = self._boundWidth
self._originalHeight = self._boundHeight
self.SetDefaultRegionSize()
def ClearPoints(self):
"""Clear the points."""
self._points = []
self._originalPoints = []
# Width and height. Centre of object is centre of box
def GetBoundingBoxMin(self):
"""Get minimum bounding box."""
return self._boundWidth, self._boundHeight
def GetPoints(self):
"""Return the internal list of polygon vertices."""
return self._points
def GetOriginalPoints(self):
"""Get the original points."""
return self._originalPoints
def GetOriginalWidth(self):
"""Get the original width."""
return self._originalWidth
def GetOriginalHeight(self):
"""Get the original height."""
return self._originalHeight
def SetOriginalWidth(self, w):
"""
Set the original width.
:param `w`: the width
"""
self._originalWidth = w
def SetOriginalHeight(self, h):
"""
Set the original height.
:param `w`: the height
"""
self._originalHeight = h
def CalculateBoundingBox(self):
"""Calculate the bounding box."""
left = 10000
right = -10000
top = 10000
bottom = -10000
for point in self._points:
if point[0] < left:
left = point[0]
if point[0] > right:
right = point[0]
if point[1] < top:
top = point[1]
if point[1] > bottom:
bottom = point[1]
self._boundWidth = right - left
self._boundHeight = bottom - top
def CalculatePolygonCentre(self):
"""
Recalculates the centre of the polygon, and
readjusts the point offsets accordingly.
Necessary since the centre of the polygon
is expected to be the real centre of the bounding
box.
"""
left = 10000
right = -10000
top = 10000
bottom = -10000
for point in self._points:
if point[0] < left:
left = point[0]
if point[0] > right:
right = point[0]
if point[1] < top:
top = point[1]
if point[1] > bottom:
bottom = point[1]
bwidth = right - left
bheight = bottom - top
newCentreX = left + bwidth / 2.0
newCentreY = top + bheight / 2.0
for i in range(len(self._points)):
self._points[i] = self._points[i][0] - newCentreX, self._points[i][1] - newCentreY
self._xpos += newCentreX
self._ypos += newCentreY
def HitTest(self, x, y):
"""Hit text
:param `x`: the x position
:param `y`: the y position
"""
# Imagine four lines radiating from this point. If all of these lines
# hit the polygon, we're inside it, otherwise we're not. Obviously
# we'd need more radiating lines to be sure of correct results for
# very strange (concave) shapes.
endPointsX = [x, x + 1000, x, x - 1000]
endPointsY = [y - 1000, y, y + 1000, y]
xpoints = []
ypoints = []
for point in self._points:
xpoints.append(point[0] + self._xpos)
ypoints.append(point[1] + self._ypos)
# We assume it's inside the polygon UNLESS one or more
# lines don't hit the outline.
isContained = True
for i in range(4):
if not PolylineHitTest(xpoints, ypoints, x, y, endPointsX[i], endPointsY[i]):
isContained = False
if not isContained:
return False
nearest_attachment = 0
# If a hit, check the attachment points within the object
nearest = 999999
for i in range(self.GetNumberOfAttachments()):
e = self.GetAttachmentPositionEdge(i)
if e:
xp, yp = e
l = math.sqrt((xp - x) * (xp - x) + (yp - y) * (yp - y))
if l < nearest:
nearest = l
nearest_attachment = i
return nearest_attachment, nearest
# Really need to be able to reset the shape! Otherwise, if the
# points ever go to zero, we've lost it, and can't resize.
def SetSize(self, new_width, new_height, recursive = True):
"""
Set the size
:param `new_width`: the width
:param `new_height`: the height
:param `recursive`: not used
"""
self.SetAttachmentSize(new_width, new_height)
# Multiply all points by proportion of new size to old size
x_proportion = abs(float(new_width) / self._originalWidth)
y_proportion = abs(float(new_height) / self._originalHeight)
for i in range(max(len(self._points), len(self._originalPoints))):
self._points[i] = wx.Point(self._originalPoints[i][0] * x_proportion, self._originalPoints[i][1] * y_proportion)
self._boundWidth = abs(new_width)
self._boundHeight = abs(new_height)
self.SetDefaultRegionSize()
# Make the original points the same as the working points
def UpdateOriginalPoints(self):
"""
If we've changed the shape, must make the original points match the
working points with this function.
"""
self._originalPoints = []
for point in self._points:
original_point = wx.RealPoint(point[0], point[1])
self._originalPoints.append(original_point)
self.CalculateBoundingBox()
self._originalWidth = self._boundWidth
self._originalHeight = self._boundHeight
def AddPolygonPoint(self, pos):
"""
Add a control point after the given point.
:param `pos`: position of point
"""
try:
firstPoint = self._points[pos]
except ValueError:
firstPoint = self._points[0]
try:
secondPoint = self._points[pos + 1]
except ValueError:
secondPoint = self._points[0]
x = (secondPoint[0] - firstPoint[0]) / 2.0 + firstPoint[0]
y = (secondPoint[1] - firstPoint[1]) / 2.0 + firstPoint[1]
point = wx.RealPoint(x, y)
if pos >= len(self._points) - 1:
self._points.append(point)
else:
self._points.insert(pos + 1, point)
self.UpdateOriginalPoints()
if self._selected:
self.DeleteControlPoints()
self.MakeControlPoints()
def DeletePolygonPoint(self, pos):
"""
Delete the given control point.
:param `pos`: position of point
"""
if pos < len(self._points):
del self._points[pos]
self.UpdateOriginalPoints()
if self._selected:
self.DeleteControlPoints()
self.MakeControlPoints()
# Assume (x1, y1) is centre of box (most generally, line end at box)
def GetPerimeterPoint(self, x1, y1, x2, y2):
"""
Get the perimeter point.
:param `x1`: the x1 position
:param `y1`: the y1 position
:param `x2`: the x2 position
:param `y2`: the y2 position
"""
# First check for situation where the line is vertical,
# and we would want to connect to a point on that vertical --
# oglFindEndForPolyline can't cope with this (the arrow
# gets drawn to the wrong place).
if self._attachmentMode == ATTACHMENT_MODE_NONE and x1 == x2:
# Look for the point we'd be connecting to. This is
# a heuristic...
for point in self._points:
if point[0] == 0:
if y2 > y1 and point[1] > 0:
return point[0] + self._xpos, point[1] + self._ypos
elif y2 < y1 and point[1] < 0:
return point[0] + self._xpos, point[1] + self._ypos
xpoints = []
ypoints = []
for point in self._points:
xpoints.append(point[0] + self._xpos)
ypoints.append(point[1] + self._ypos)
return FindEndForPolyline(xpoints, ypoints, x1, y1, x2, y2)
def OnDraw(self, dc):
"""The draw handler."""
if self._shadowMode != SHADOW_NONE:
if self._shadowBrush:
dc.SetBrush(self._shadowBrush)
dc.SetPen(TransparentPen)
dc.DrawPolygon(self._points, self._xpos + self._shadowOffsetX, self._ypos, self._shadowOffsetY)
if self._pen:
if self._pen.GetWidth() == 0:
dc.SetPen(TransparentPen)
else:
dc.SetPen(self._pen)
if self._brush:
dc.SetBrush(self._brush)
dc.DrawPolygon(self._points, self._xpos, self._ypos)
def OnDrawOutline(self, dc, x, y, w, h):
"""The draw outline handler."""
dc.SetBrush(wx.TRANSPARENT_BRUSH)
# Multiply all points by proportion of new size to old size
x_proportion = abs(float(w) / self._originalWidth)
y_proportion = abs(float(h) / self._originalHeight)
intPoints = []
for point in self._originalPoints:
intPoints.append(wx.Point(x_proportion * point[0], y_proportion * point[1]))
dc.DrawPolygon(intPoints, x, y)
# Make as many control points as there are vertices
def MakeControlPoints(self):
"""Make control points."""
for point in self._points:
control = PolygonControlPoint(self._canvas, self, CONTROL_POINT_SIZE, point, point[0], point[1])
self._canvas.AddShape(control)
self._controlPoints.append(control)
def ResetControlPoints(self):
"""Reset control points."""
for i in range(min(len(self._points), len(self._controlPoints))):
point = self._points[i]
self._controlPoints[i]._xoffset = point[0]
self._controlPoints[i]._yoffset = point[1]
self._controlPoints[i].polygonVertex = point
def GetNumberOfAttachments(self):
"""Get number of attachments."""
maxN = max(len(self._points) - 1, 0)
for point in self._attachmentPoints:
if point._id > maxN:
maxN = point._id
return maxN + 1
def GetAttachmentPosition(self, attachment, nth = 0, no_arcs = 1, line = None):
"""
Get attachment position.
:param `attachment`: the attachment ???
:param `nth`: get nth attachment ???
:param `no_arcs`: ???
:param `line`: ???
"""
if self._attachmentMode == ATTACHMENT_MODE_EDGE and self._points and attachment < len(self._points):
point = self._points[0]
return point[0] + self._xpos, point[1] + self._ypos
return Shape.GetAttachmentPosition(self, attachment, nth, no_arcs, line)
def AttachmentIsValid(self, attachment):
"""
Is attachment valid?
:param `attachment`: ???
"""
if not self._points:
return False
if attachment >= 0 and attachment < len(self._points):
return True
for point in self._attachmentPoints:
if point._id == attachment:
return True
return False
def Rotate(self, x, y, theta):
"""
Rotate about the given axis by the given amount in radians.
:param `x`: the x position
:param `y`: the y position
:param `theta`: the theta
"""
actualTheta = theta - self._rotation
# Rotate attachment points
sinTheta = math.sin(actualTheta)
cosTheta = math.cos(actualTheta)
for point in self._attachmentPoints:
x1 = point._x
y1 = point._y
point._x = x1 * cosTheta - y1 * sinTheta + x * (1 - cosTheta) + y * sinTheta
point._y = x1 * sinTheta + y1 * cosTheta + y * (1 - cosTheta) + x * sinTheta
for i in range(len(self._points)):
x1, y1 = self._points[i]
self._points[i] = x1 * cosTheta - y1 * sinTheta + x * (1 - cosTheta) + y * sinTheta, x1 * sinTheta + y1 * cosTheta + y * (1 - cosTheta) + x * sinTheta
for i in range(len(self._originalPoints)):
x1, y1 = self._originalPoints[i]
self._originalPoints[i] = x1 * cosTheta - y1 * sinTheta + x * (1 - cosTheta) + y * sinTheta, x1 * sinTheta + y1 * cosTheta + y * (1 - cosTheta) + x * sinTheta
# Added by Pierre Hjälm. If we don't do this the outline will be
# the wrong size. Hopefully it won't have any ill effects.
self.UpdateOriginalPoints()
self._rotation = theta
self.CalculatePolygonCentre()
self.CalculateBoundingBox()
self.ResetControlPoints()
# Control points ('handles') redirect control to the actual shape, to
# make it easier to override sizing behaviour.
def OnSizingDragLeft(self, pt, draw, x, y, keys = 0, attachment = 0):
"""The sizing drag left handler."""
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
dc.SetLogicalFunction(OGLRBLF)
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
# Code for CTRL-drag in C++ version commented out
pt.CalculateNewSize(x, y)
self.GetEventHandler().OnDrawOutline(dc, self.GetX(), self.GetY(), pt.GetNewSize()[0], pt.GetNewSize()[1])
def OnSizingBeginDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing begin drag left handler."""
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
dc.SetLogicalFunction(OGLRBLF)
self.Erase(dc)
bound_x, bound_y = self.GetBoundingBoxMin()
dist = math.sqrt((x - self.GetX()) * (x - self.GetX()) + (y - self.GetY()) * (y - self.GetY()))
pt._originalDistance = dist
pt._originalSize[0] = bound_x
pt._originalSize[1] = bound_y
if pt._originalDistance == 0:
pt._originalDistance = 0.0001
dottedPen = wx.Pen(wx.Colour(0, 0, 0), 1, wx.PENSTYLE_DOT)
dc.SetPen(dottedPen)
dc.SetBrush(wx.TRANSPARENT_BRUSH)
# Code for CTRL-drag in C++ version commented out
pt.CalculateNewSize(x, y)
self.GetEventHandler().OnDrawOutline(dc, self.GetX(), self.GetY(), pt.GetNewSize()[0], pt.GetNewSize()[1])
self._canvas.CaptureMouse()
def OnSizingEndDragLeft(self, pt, x, y, keys = 0, attachment = 0):
"""The sizing end drag left handler."""
dc = wx.MemoryDC()
dc.SelectObject(self.GetCanvas()._Buffer)
if self._canvas.HasCapture():
self._canvas.ReleaseMouse()
dc.SetLogicalFunction(wx.COPY)
# If we're changing shape, must reset the original points
if keys & KEY_CTRL:
self.CalculateBoundingBox()
self.CalculatePolygonCentre()
else:
self.SetSize(pt.GetNewSize()[0], pt.GetNewSize()[1])
self.Recompute()
self.ResetControlPoints()
self.Move(dc, self.GetX(), self.GetY())
if not self._canvas.GetQuickEditMode():
self._canvas.Redraw(dc)
class EllipseShape(Shape):
"""
The :class:`EllipseShape` class behaves similarly to the
:class`RectangleShape` but is elliptical.
"""
def __init__(self, w, h):
"""
Default class constructor
:param `w`: the width
:param `h`: the height
"""
Shape.__init__(self)
self._width = w
self._height = h
self.SetDefaultRegionSize()
def GetBoundingBoxMin(self):
"""Get the minimum bounding box."""
return self._width, self._height
def GetPerimeterPoint(self, x1, y1, x2, y2):
"""
Get the perimeter point.
:param `x1`: the x1 position
:param `y1`: the y1 position
:param `x2`: the x2 position
:param `y2`: the y2 position
"""
bound_x, bound_y = self.GetBoundingBoxMax()
return DrawArcToEllipse(self._xpos, self._ypos, bound_x, bound_y, x2, y2, x1, y1)
def GetWidth(self):
"""Get the width."""
return self._width
def GetHeight(self):
"""Get the height."""
return self._height
def SetWidth(self, w):
"""
Set the width.
:param `w`: the width
"""
self._width = w
def SetHeight(self, h):
"""
Set the height.
:param `h`: the height
"""
self._height = h
def OnDraw(self, dc):
"""The draw handler."""
if self._shadowMode != SHADOW_NONE:
if self._shadowBrush:
dc.SetBrush(self._shadowBrush)
dc.SetPen(TransparentPen)
dc.DrawEllipse(self._xpos - self.GetWidth() / 2.0 + self._shadowOffsetX,
self._ypos - self.GetHeight() / 2.0 + self._shadowOffsetY,
self.GetWidth(), self.GetHeight())
if self._pen:
if self._pen.GetWidth() == 0:
dc.SetPen(TransparentPen)
else:
dc.SetPen(self._pen)
if self._brush:
dc.SetBrush(self._brush)
dc.DrawEllipse(self._xpos - self.GetWidth() / 2.0, self._ypos - self.GetHeight() / 2.0, self.GetWidth(), self.GetHeight())
def SetSize(self, x, y, recursive = True):
"""
Set the size.
:param `x`: the width
:param `y`: the height
:recursive: not used
"""
self.SetAttachmentSize(x, y)
self._width = x
self._height = y
self.SetDefaultRegionSize()
def GetNumberOfAttachments(self):
"""Get number of attachments."""
return Shape.GetNumberOfAttachments(self)
# There are 4 attachment points on an ellipse - 0 = top, 1 = right,
# 2 = bottom, 3 = left.
def GetAttachmentPosition(self, attachment, nth = 0, no_arcs = 1, line = None):
"""
Get attachment position.
:param `attachment`: the attachment ???
:param `nth`: get nth attachment ???
:param `no_arcs`: ???
:param `line`: ???
"""
if self._attachmentMode == ATTACHMENT_MODE_BRANCHING:
return Shape.GetAttachmentPosition(self, attachment, nth, no_arcs, line)
if self._attachmentMode != ATTACHMENT_MODE_NONE:
top = self._ypos + self._height / 2.0
bottom = self._ypos - self._height / 2.0
left = self._xpos - self._width / 2.0
right = self._xpos + self._width / 2.0
physicalAttachment = self.LogicalToPhysicalAttachment(attachment)
if physicalAttachment == 0:
if self._spaceAttachments:
x = left + (nth + 1) * self._width / (no_arcs + 1.0)
else:
x = self._xpos
y = top
# We now have the point on the bounding box: but get the point
# on the ellipse by imagining a vertical line from
# (x, self._ypos - self._height - 500) to (x, self._ypos) intersecting
# the ellipse.
return DrawArcToEllipse(self._xpos, self._ypos, self._width, self._height, x, self._ypos - self._height - 500, x, self._ypos)
elif physicalAttachment == 1:
x = right
if self._spaceAttachments:
y = bottom + (nth + 1) * self._height / (no_arcs + 1.0)
else:
y = self._ypos
return DrawArcToEllipse(self._xpos, self._ypos, self._width, self._height, self._xpos + self._width + 500, y, self._xpos, y)
elif physicalAttachment == 2:
if self._spaceAttachments:
x = left + (nth + 1) * self._width / (no_arcs + 1.0)
else:
x = self._xpos
y = bottom
return DrawArcToEllipse(self._xpos, self._ypos, self._width, self._height, x, self._ypos + self._height + 500, x, self._ypos)
elif physicalAttachment == 3:
x = left
if self._spaceAttachments:
y = bottom + (nth + 1) * self._height / (no_arcs + 1.0)
else:
y = self._ypos
return DrawArcToEllipse(self._xpos, self._ypos, self._width, self._height, self._xpos - self._width - 500, y, self._xpos, y)
else:
return Shape.GetAttachmentPosition(self, attachment, x, y, nth, no_arcs, line)
else:
return self._xpos, self._ypos
class CircleShape(EllipseShape):
"""
The :class:`CircleShape` class is an :class:`EllipseShape` whose width
and height are the same.
"""
def __init__(self, diameter):
"""
Default class constructor
:param `diameter`: the diameter
"""
EllipseShape.__init__(self, diameter, diameter)
self.SetMaintainAspectRatio(True)
def GetPerimeterPoint(self, x1, y1, x2, y2):
"""
Get the perimeter point.
:param `x1`: ???
:param `y1`: ???
:param `x2`: ???
:param `y2`: ???
:returns: ???
"""
return FindEndForCircle(self._width / 2.0, self._xpos, self._ypos, x2, y2)
class TextShape(RectangleShape):
"""
The :class:`TextShape` class like :class:`RectangleShape` but only the
text is displayed.
"""
def __init__(self, width, height):
"""
Default class constructor
:param `width`: the width
:param `height`: the height
"""
RectangleShape.__init__(self, width, height)
def OnDraw(self, dc):
"""not implemented???"""
pass
class ShapeRegion(object):
"""The :class:`ShapeRegion` class."""
def __init__(self, region = None):
"""
Default class constructor
:param `region`: a parent region or None???
"""
if region:
self._regionText = region._regionText
self._regionName = region._regionName
self._textColour = region._textColour
self._font = region._font
self._minHeight = region._minHeight
self._minWidth = region._minWidth
self._width = region._width
self._height = region._height
self._x = region._x
self._y = region._y
self._regionProportionX = region._regionProportionX
self._regionProportionY = region._regionProportionY
self._formatMode = region._formatMode
self._actualColourObject = region._actualColourObject
self._actualPenObject = None
self._penStyle = region._penStyle
self._penColour = region._penColour
self.ClearText()
for line in region._formattedText:
new_line = ShapeTextLine(line.GetX(), line.GetY(), line.GetText())
self._formattedText.append(new_line)
else:
self._regionText = ""
self._font = NormalFont
self._minHeight = 5.0
self._minWidth = 5.0
self._width = 0.0
self._height = 0.0
self._x = 0.0
self._y = 0.0
self._regionProportionX = -1.0
self._regionProportionY = -1.0
self._formatMode = FORMAT_CENTRE_HORIZ | FORMAT_CENTRE_VERT
self._regionName = ""
self._textColour = "BLACK"
self._penColour = "BLACK"
self._penStyle = wx.PENSTYLE_SOLID
self._actualColourObject = wx.TheColourDatabase.Find("BLACK")
self._actualPenObject = None
self._formattedText = []
def ClearText(self):
"""Clear the text."""
self._formattedText = []
def SetFont(self, f):
"""
Set the font.
:param `f`: an instance of :class:`Font`
"""
self._font = f
def SetMinSize(self, w, h):
"""
Set the minumum size.
:param `w`: the minimum width
:Param `h`: the minimum height
"""
self._minWidth = w
self._minHeight = h
def SetSize(self, w, h):
"""
Set the size.
:param `w`: the width
:Param `h`: the jeight
"""
self._width = w
self._height = h
def SetPosition(self, xp, yp):
"""
Set the position.
:param `xp`: the x position
:Param `yp`: the y position
"""
self._x = xp
self._y = yp
def SetProportions(self, xp, yp):
"""
Set the proportions.
:param `xp`: the x region proportion
:Param `yp`: the y region proportion
"""
self._regionProportionX = xp
self._regionProportionY = yp
def SetFormatMode(self, mode):
"""
Set the format mode of the region.
:param `mode`: can be a bit list of the following
============================== ==============================
Format mode Description
============================== ==============================
`FORMAT_NONE` No formatting
`FORMAT_CENTRE_HORIZ` Horizontal centring
`FORMAT_CENTRE_VERT` Vertical centring
============================== ==============================
"""
self._formatMode = mode
def SetColour(self, col):
"""
Set the colour.
:param str `col`: a valid colour name,
see :class:`ColourDatabase`
"""
self._textColour = col
self._actualColourObject = col
def GetActualColourObject(self):
"""Get the actual colour object from the :class:`ColourDatabase`."""
self._actualColourObject = wx.TheColourDatabase.Find(self.GetColour())
return self._actualColourObject
def SetPenColour(self, col):
"""
Set the pen colour.
:param str `col`: a valid colour name,
see :class:`ColourDatabase`
"""
self._penColour = col
self._actualPenObject = None
def GetActualPen(self):
"""
Get actual pen.
:note: Returns NULL if the pen is invisible
(different to pen being transparent; indicates that
region boundary should not be drawn.)
"""
if self._actualPenObject:
return self._actualPenObject
if not self._penColour:
return None
if self._penColour=="Invisible":
return None
self._actualPenObject = wx.Pen(self._penColour, 1, self._penStyle)
return self._actualPenObject
def SetText(self, s):
"""
Set the text.
:param str `s`: the text
"""
self._regionText = s
def SetName(self, s):
"""
Set the name.
:param str `s`: the name
"""
self._regionName = s
def GetText(self):
"""Get the text."""
return self._regionText
def GetFont(self):
"""Get the font."""
return self._font
def GetMinSize(self):
"""Get the minimum size."""
return self._minWidth, self._minHeight
def GetProportion(self):
"""Get the proportion."""
return self._regionProportionX, self._regionProportionY
def GetSize(self):
"""Get the size."""
return self._width, self._height
def GetPosition(self):
"""Get the position."""
return self._x, self._y
def GetFormatMode(self):
"""Get the format mode."""
return self._formatMode
def GetName(self):
"""Get the name."""
return self._regionName
def GetColour(self):
"""Get the colour."""
return self._textColour
def GetFormattedText(self):
"""Get the formatted text."""
return self._formattedText
def GetPenColour(self):
"""Get the pen colour"""
return self._penColour
def GetPenStyle(self):
"""Get the pen style."""
return self._penStyle
def SetPenStyle(self, style):
"""
Set the pen style.
:param `style`: the style, see :class:`Pen`
"""
self._penStyle = style
self._actualPenObject = None
def GetWidth(self):
"""Get the width."""
return self._width
def GetHeight(self):
"""Get the height."""
return self._height
class ControlPoint(RectangleShape):
"""The :class:`ControlPoint` class."""
def __init__(self, theCanvas, object, size, the_xoffset, the_yoffset, the_type):
"""
Default class constructor
:param `theCanvas`: a :class:`~lib.ogl.Canvas`
:param `object`: the shape, instance of :class:`~lib.ogl.Shape`
:param float `size`: the size
:param float `the_xoffset`: the x position
:param float `the_yoffset`: the y position
:param int `the_type`: one of the following types ???
======================================== ==================================
Control point type Description
======================================== ==================================
`CONTROL_POINT_VERTICAL` Vertical
`CONTROL_POINT_HORIZONTAL` Horizontal
`CONTROL_POINT_DIAGONAL` Diagonal
======================================== ==================================
"""
RectangleShape.__init__(self, size, size)
self._canvas = theCanvas
self._shape = object
self._xoffset = the_xoffset
self._yoffset = the_yoffset
self._type = the_type
self.SetPen(BlackForegroundPen)
self.SetBrush(wx.BLACK_BRUSH)
self._oldCursor = None
self._visible = True
self._eraseObject = True
# Don't even attempt to draw any text - waste of time
def OnDrawContents(self, dc):
"""not implemented???"""
pass
def OnDraw(self, dc):
"""The draw handler."""
self._xpos = self._shape.GetX() + self._xoffset
self._ypos = self._shape.GetY() + self._yoffset
RectangleShape.OnDraw(self, dc)
def OnErase(self, dc):
"""The erase handler."""
RectangleShape.OnErase(self, dc)
# Implement resizing of canvas object
def OnDragLeft(self, draw, x, y, keys = 0, attachment = 0):
"""The drag left handler."""
self._shape.GetEventHandler().OnSizingDragLeft(self, draw, x, y, keys, attachment)
def OnBeginDragLeft(self, x, y, keys = 0, attachment = 0):
"""The begin drag left handler."""
self._shape.GetEventHandler().OnSizingBeginDragLeft(self, x, y, keys, attachment)
def OnEndDragLeft(self, x, y, keys = 0, attachment = 0):
"""The end drag left handler."""
self._shape.GetEventHandler().OnSizingEndDragLeft(self, x, y, keys, attachment)
def GetNumberOfAttachments(self):
"""Get the number of attachments."""
return 1
def GetAttachmentPosition(self, attachment, nth = 0, no_arcs = 1, line = None):
"""
Get the attachment position.
:param `attachment`: the attachment ???
:param `nth`: get nth attachment ???
:param `no_arcs`: ???
:param `line`: ???
"""
return self._xpos, self._ypos
def SetEraseObject(self, er):
"""
Set the erase object ???
:param `er`: the object
"""
self._eraseObject = er
class PolygonControlPoint(ControlPoint):
"""The :class:`PolygonControlPoint` class."""
def __init__(self, theCanvas, object, size, vertex, the_xoffset, the_yoffset):
"""
Default class constructor
:param `theCanvas`: a :class:`~lib.ogl.Canvas`
:param `object`: the shape, instance of :class:`~lib.ogl.Shape`
:param float `size`: the size
:param `vertext`: the vertex
:param float `the_xoffset`: the x position
:param float `the_yoffset`: the y position
:param int `the_type`: one of the following types ???
======================================== ==================================
Control point type Description
======================================== ==================================
`CONTROL_POINT_VERTICAL` Vertical
`CONTROL_POINT_HORIZONTAL` Horizontal
`CONTROL_POINT_DIAGONAL` Diagonal
======================================== ==================================
"""
ControlPoint.__init__(self, theCanvas, object, size, the_xoffset, the_yoffset, 0)
self._polygonVertex = vertex
self._originalDistance = 0.0
self._newSize = wx.RealPoint()
self._originalSize = wx.RealPoint()
def GetNewSize(self):
"""Get the new size."""
return self._newSize
def CalculateNewSize(self, x, y):
"""
Calculate what new size would be, at end of resize.
:param `x`: x ???
:param `y`: y ???
"""
bound_x, bound_y = self.GetShape().GetBoundingBoxMax()
dist = math.sqrt((x - self._shape.GetX()) * (x - self._shape.GetX()) + (y - self._shape.GetY()) * (y - self._shape.GetY()))
self._newSize[0] = dist / self._originalDistance * self._originalSize[0]
self._newSize[1] = dist / self._originalDistance * self._originalSize[1]
# Implement resizing polygon or moving the vertex
def OnDragLeft(self, draw, x, y, keys = 0, attachment = 0):
"""The drag left handler."""
self._shape.GetEventHandler().OnSizingDragLeft(self, draw, x, y, keys, attachment)
def OnBeginDragLeft(self, x, y, keys = 0, attachment = 0):
"""The begin drag left handler."""
self._shape.GetEventHandler().OnSizingBeginDragLeft(self, x, y, keys, attachment)
def OnEndDragLeft(self, x, y, keys = 0, attachment = 0):
"""The end drag left handler."""
self._shape.GetEventHandler().OnSizingEndDragLeft(self, x, y, keys, attachment)
from .canvas import *
from .lines import *
from .composit import *
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