207 lines
6.9 KiB
C++
207 lines
6.9 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file dynamicTextFont.h
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* @author drose
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* @date 2002-02-08
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*/
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#ifndef DYNAMICTEXTFONT_H
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#define DYNAMICTEXTFONT_H
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#include "pandabase.h"
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#ifdef HAVE_FREETYPE
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#include "textFont.h"
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#include "freetypeFont.h"
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#include "dynamicTextGlyph.h"
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#include "dynamicTextPage.h"
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#include "filename.h"
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#include "pvector.h"
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#include "pmap.h"
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#include <ft2build.h>
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#include FT_FREETYPE_H
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class NurbsCurveResult;
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typedef struct hb_font_t hb_font_t;
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/**
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* A DynamicTextFont is a special TextFont object that rasterizes its glyphs
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* from a standard font file (e.g. a TTF file) on the fly. It requires the
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* FreeType 2.0 library (or any higher, backward-compatible version).
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*/
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class EXPCL_PANDA_TEXT DynamicTextFont : public TextFont, public FreetypeFont {
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PUBLISHED:
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DynamicTextFont(const Filename &font_filename, int face_index = 0);
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DynamicTextFont(const char *font_data, int data_length, int face_index);
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DynamicTextFont(const DynamicTextFont ©);
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virtual ~DynamicTextFont();
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virtual PT(TextFont) make_copy() const;
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INLINE const std::string &get_name() const;
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INLINE bool set_point_size(PN_stdfloat point_size);
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INLINE PN_stdfloat get_point_size() const;
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MAKE_PROPERTY(point_size, get_point_size, set_point_size);
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INLINE bool set_pixels_per_unit(PN_stdfloat pixels_per_unit);
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INLINE PN_stdfloat get_pixels_per_unit() const;
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MAKE_PROPERTY(pixels_per_unit, get_pixels_per_unit, set_pixels_per_unit);
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INLINE bool set_scale_factor(PN_stdfloat scale_factor);
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INLINE PN_stdfloat get_scale_factor() const;
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MAKE_PROPERTY(scale_factor, get_scale_factor, set_scale_factor);
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INLINE void set_native_antialias(bool native_antialias);
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INLINE bool get_native_antialias() const;
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MAKE_PROPERTY(native_antialias, get_native_antialias, set_native_antialias);
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INLINE int get_font_pixel_size() const;
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MAKE_PROPERTY(font_pixel_size, get_font_pixel_size);
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INLINE PN_stdfloat get_line_height() const;
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INLINE PN_stdfloat get_space_advance() const;
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INLINE void set_texture_margin(int texture_margin);
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INLINE int get_texture_margin() const;
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INLINE void set_poly_margin(PN_stdfloat poly_margin);
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INLINE PN_stdfloat get_poly_margin() const;
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MAKE_PROPERTY(texture_margin, get_texture_margin, set_texture_margin);
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MAKE_PROPERTY(poly_margin, get_poly_margin, set_poly_margin);
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INLINE void set_page_size(const LVecBase2i &page_size);
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INLINE void set_page_size(int x_size, int y_size);
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INLINE const LVecBase2i &get_page_size() const;
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INLINE int get_page_x_size() const;
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INLINE int get_page_y_size() const;
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MAKE_PROPERTY(page_size, get_page_size, set_page_size);
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INLINE void set_minfilter(SamplerState::FilterType filter);
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INLINE SamplerState::FilterType get_minfilter() const;
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INLINE void set_magfilter(SamplerState::FilterType filter);
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INLINE SamplerState::FilterType get_magfilter() const;
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INLINE void set_anisotropic_degree(int anisotropic_degree);
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INLINE int get_anisotropic_degree() const;
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MAKE_PROPERTY(minfilter, get_minfilter, set_minfilter);
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MAKE_PROPERTY(magfilter, get_magfilter, set_magfilter);
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MAKE_PROPERTY(anisotropic_degree, get_anisotropic_degree, set_anisotropic_degree);
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INLINE void set_render_mode(RenderMode render_mode);
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INLINE RenderMode get_render_mode() const;
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MAKE_PROPERTY(render_mode, get_render_mode, set_render_mode);
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INLINE void set_fg(const LColor &fg);
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INLINE const LColor &get_fg() const;
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INLINE void set_bg(const LColor &bg);
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INLINE const LColor &get_bg() const;
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INLINE void set_outline(const LColor &outline_color, PN_stdfloat outline_width,
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PN_stdfloat outline_feather);
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INLINE const LColor &get_outline_color() const;
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INLINE PN_stdfloat get_outline_width() const;
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INLINE PN_stdfloat get_outline_feather() const;
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INLINE Texture::Format get_tex_format() const;
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MAKE_PROPERTY(fg, get_fg, set_fg);
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MAKE_PROPERTY(bg, get_bg, set_bg);
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MAKE_PROPERTY(tex_format, get_tex_format);
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int get_num_pages() const;
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DynamicTextPage *get_page(int n) const;
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MAKE_SEQ(get_pages, get_num_pages, get_page);
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MAKE_SEQ_PROPERTY(pages, get_num_pages, get_page);
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int garbage_collect();
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void clear();
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virtual void write(std::ostream &out, int indent_level) const;
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public:
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virtual bool get_glyph(int character, CPT(TextGlyph) &glyph);
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virtual PN_stdfloat get_kerning(int first, int second) const;
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bool get_glyph_by_index(int character, int glyph_index, CPT(TextGlyph) &glyph);
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hb_font_t *get_hb_font() const;
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private:
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void initialize();
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void update_filters();
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void determine_tex_format();
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CPT(TextGlyph) make_glyph(int character, FT_Face face, int glyph_index);
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void copy_bitmap_to_texture(const FT_Bitmap &bitmap, DynamicTextGlyph *glyph);
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void copy_pnmimage_to_texture(const PNMImage &image, DynamicTextGlyph *glyph);
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void blend_pnmimage_to_texture(const PNMImage &image, DynamicTextGlyph *glyph,
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const LColor &fg);
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DynamicTextGlyph *slot_glyph(int character, int x_size, int y_size, PN_stdfloat advance);
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void render_wireframe_contours(TextGlyph *glyph);
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void render_polygon_contours(TextGlyph *glyph, bool face, bool extrude);
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int _texture_margin;
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PN_stdfloat _poly_margin;
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LVecBase2i _page_size;
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SamplerState::FilterType _minfilter;
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SamplerState::FilterType _magfilter;
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int _anisotropic_degree;
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RenderMode _render_mode;
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LColor _fg, _bg, _outline_color;
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PN_stdfloat _outline_width;
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PN_stdfloat _outline_feather;
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bool _has_outline;
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Texture::Format _tex_format;
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bool _needs_image_processing;
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typedef pvector< PT(DynamicTextPage) > Pages;
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Pages _pages;
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int _preferred_page;
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// This doesn't need to be a reference-counting pointer, because the
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// reference to each glyph is kept by the DynamicTextPage object.
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typedef pmap<int, const TextGlyph *> Cache;
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Cache _cache;
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// This is a list of the glyphs that do not have any printable properties
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// (e.g. space), but still have an advance measure. We store them here to
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// keep their reference counts; they also appear in the above table.
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typedef pvector< PT(TextGlyph) > EmptyGlyphs;
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EmptyGlyphs _empty_glyphs;
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mutable hb_font_t *_hb_font;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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TextFont::init_type();
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register_type(_type_handle, "DynamicTextFont",
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TextFont::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class TextNode;
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};
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INLINE std::ostream &operator << (std::ostream &out, const DynamicTextFont &dtf);
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#include "dynamicTextFont.I"
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#endif // HAVE_FREETYPE
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#endif
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