110 lines
3 KiB
C
110 lines
3 KiB
C
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/**
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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 subprocessWindow.h
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* @author drose
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* @date 2009-07-11
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*/
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#ifndef SUBPROCESSWINDOW_H
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#define SUBPROCESSWINDOW_H
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#include "pandabase.h"
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// For now, a simple trigger whether to enable the subprocess window support.
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// We only build it on OSX, because this is (presently) the only case where
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// it's useful.
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#ifdef IS_OSX
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#define SUPPORT_SUBPROCESS_WINDOW 1
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#else
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#undef SUPPORT_SUBPROCESS_WINDOW
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#endif
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#ifdef SUPPORT_SUBPROCESS_WINDOW
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#include "graphicsWindow.h"
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#include "graphicsBuffer.h"
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#include "texture.h"
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#include "subprocessWindowBuffer.h"
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#include "filename.h"
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/**
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* This is a special "window" that actually renders to an offscreen buffer,
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* copies the pixels to RAM, and then ships them to a parent process via
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* shared memory for rendering to the window.
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*
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* This whole nonsense is necessary because OSX doesn't allow child processes
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* to draw to, or attach windows to, windows created in the parent process.
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* There's a rumor that 10.6 fixes this nonsense; this will remain to be seen.
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*/
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class SubprocessWindow : public GraphicsWindow {
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public:
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SubprocessWindow(GraphicsEngine *engine, GraphicsPipe *pipe,
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const std::string &name,
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const FrameBufferProperties &fb_prop,
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const WindowProperties &win_prop,
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int flags,
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GraphicsStateGuardian *gsg,
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GraphicsOutput *host);
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virtual ~SubprocessWindow();
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virtual void process_events();
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virtual bool begin_frame(FrameMode mode, Thread *current_thread);
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virtual void end_frame(FrameMode mode, Thread *current_thread);
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virtual void begin_flip();
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virtual void set_properties_now(WindowProperties &properties);
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protected:
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virtual void close_window();
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virtual bool open_window();
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private:
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void internal_close_window();
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bool internal_open_window();
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ButtonHandle translate_key(int &keycode, int os_code, unsigned int flags) const;
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void transition_button(unsigned int flag, ButtonHandle button);
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private:
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PT(GraphicsBuffer) _buffer;
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PT(Texture) _texture;
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PT(GraphicsWindowInputDevice) _input;
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int _fd;
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size_t _mmap_size;
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Filename _filename;
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SubprocessWindowBuffer *_swbuffer;
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unsigned int _last_event_flags;
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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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GraphicsWindow::init_type();
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register_type(_type_handle, "SubprocessWindow",
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GraphicsWindow::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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};
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#include "subprocessWindow.I"
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#endif // SUPPORT_SUBPROCESS_WINDOW
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#endif
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