OpenTTD Source  1.11.2
sdl2_v.h
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1 /*
2  * This file is part of OpenTTD.
3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6  */
7 
10 #ifndef VIDEO_SDL_H
11 #define VIDEO_SDL_H
12 
13 #include <condition_variable>
14 
15 #include "video_driver.hpp"
16 
19 public:
20  VideoDriver_SDL_Base() : sdl_window(nullptr), buffer_locked(false) {}
21 
22  const char *Start(const StringList &param) override;
23 
24  void Stop() override;
25 
26  void MakeDirty(int left, int top, int width, int height) override;
27 
28  void MainLoop() override;
29 
30  bool ChangeResolution(int w, int h) override;
31 
32  bool ToggleFullscreen(bool fullscreen) override;
33 
34  bool AfterBlitterChange() override;
35 
36  bool ClaimMousePointer() override;
37 
38  void EditBoxGainedFocus() override;
39 
40  void EditBoxLostFocus() override;
41 
42  std::vector<int> GetListOfMonitorRefreshRates() override;
43 
44  const char *GetName() const override { return "sdl"; }
45 
46 protected:
47  struct SDL_Window *sdl_window;
51 
52  Dimension GetScreenSize() const override;
53  void InputLoop() override;
54  bool LockVideoBuffer() override;
55  void UnlockVideoBuffer() override;
56  void CheckPaletteAnim() override;
57  bool PollEvent() override;
58 
60  void ClientSizeChanged(int w, int h, bool force);
61 
63  virtual bool AllocateBackingStore(int w, int h, bool force = false) = 0;
65  virtual void *GetVideoPointer() = 0;
67  virtual void ReleaseVideoPointer() = 0;
69  virtual bool CreateMainWindow(uint w, uint h, uint flags = 0);
70 
71 private:
72  void LoopOnce();
73  void MainLoopCleanup();
74  bool CreateMainSurface(uint w, uint h, bool resize);
75  const char *Initialize();
76 
77 #ifdef __EMSCRIPTEN__
78  /* Convert a constant pointer back to a non-constant pointer to a member function. */
79  static void EmscriptenLoop(void *self) { ((VideoDriver_SDL_Base *)self)->LoopOnce(); }
80 #endif
81 
86 
87  int startup_display;
88 };
89 
90 #endif /* VIDEO_SDL_H */
VideoDriver_SDL_Base::UnlockVideoBuffer
void UnlockVideoBuffer() override
Unlock a previously locked video buffer.
Definition: sdl2_v.cpp:730
VideoDriver
The base of all video drivers.
Definition: video_driver.hpp:35
Dimension
Dimensions (a width and height) of a rectangle in 2D.
Definition: geometry_type.hpp:27
VideoDriver_SDL_Base::ReleaseVideoPointer
virtual void ReleaseVideoPointer()=0
Hand video buffer back to the painting backend.
VideoDriver_SDL_Base::MakeDirty
void MakeDirty(int left, int top, int width, int height) override
Mark a particular area dirty.
Definition: sdl2_v.cpp:38
VideoDriver_SDL_Base::GetListOfMonitorRefreshRates
std::vector< int > GetListOfMonitorRefreshRates() override
Get a list of refresh rates of each available monitor.
Definition: sdl2_v.cpp:240
VideoDriver_SDL_Base::LockVideoBuffer
bool LockVideoBuffer() override
Make sure the video buffer is ready for drawing.
Definition: sdl2_v.cpp:719
VideoDriver_SDL_Base::EditBoxGainedFocus
void EditBoxGainedFocus() override
This is called to indicate that an edit box has gained focus, text input mode should be enabled.
Definition: sdl2_v.cpp:221
VideoDriver_SDL_Base::AllocateBackingStore
virtual bool AllocateBackingStore(int w, int h, bool force=false)=0
(Re-)create the backing store.
VideoDriver_SDL_Base::MainLoop
void MainLoop() override
Perform the actual drawing.
Definition: sdl2_v.cpp:651
VideoDriver_SDL_Base::GetName
const char * GetName() const override
Get the name of this driver.
Definition: sdl2_v.h:44
VideoDriver_SDL_Base::Stop
void Stop() override
Stop this driver.
Definition: sdl2_v.cpp:585
VideoDriver_SDL_Base::InputLoop
void InputLoop() override
Handle input logic, is CTRL pressed, should we fast-forward, etc.
Definition: sdl2_v.cpp:593
VideoDriver_SDL_Base::AfterBlitterChange
bool AfterBlitterChange() override
Callback invoked after the blitter was changed.
Definition: sdl2_v.cpp:703
VideoDriver_SDL_Base::local_palette
Palette local_palette
Copy of _cur_palette.
Definition: sdl2_v.h:48
VideoDriver_SDL_Base::PollEvent
bool PollEvent() override
Process a single system event.
Definition: sdl2_v.cpp:377
StringList
std::vector< std::string > StringList
Type for a list of strings.
Definition: string_type.h:58
VideoDriver_SDL_Base::ToggleFullscreen
bool ToggleFullscreen(bool fullscreen) override
Change the full screen setting.
Definition: sdl2_v.cpp:672
VideoDriver_SDL_Base::CheckPaletteAnim
void CheckPaletteAnim() override
Process any pending palette animation.
Definition: sdl2_v.cpp:44
VideoDriver_SDL_Base::CreateMainWindow
virtual bool CreateMainWindow(uint w, uint h, uint flags=0)
Create the main window.
Definition: sdl2_v.cpp:145
VideoDriver_SDL_Base::ClientSizeChanged
void ClientSizeChanged(int w, int h, bool force)
Indicate to the driver the client-side might have changed.
Definition: sdl2_v.cpp:130
VideoDriver_SDL_Base::EditBoxLostFocus
void EditBoxLostFocus() override
This is called to indicate that an edit box has lost focus, text input mode should be disabled.
Definition: sdl2_v.cpp:232
video_driver.hpp
VideoDriver_SDL_Base::dirty_rect
Rect dirty_rect
Rectangle encompassing the dirty area of the video buffer.
Definition: sdl2_v.h:50
VideoDriver_SDL_Base
The SDL video driver.
Definition: sdl2_v.h:18
VideoDriver_SDL_Base::edit_box_focused
bool edit_box_focused
This is true to indicate that keyboard input is in text input mode, and SDL_TEXTINPUT events are enab...
Definition: sdl2_v.h:85
VideoDriver_SDL_Base::buffer_locked
bool buffer_locked
Video buffer was locked by the main thread.
Definition: sdl2_v.h:49
VideoDriver_SDL_Base::ChangeResolution
bool ChangeResolution(int w, int h) override
Change the resolution of the window.
Definition: sdl2_v.cpp:667
Rect
Specification of a rectangle with absolute coordinates of all edges.
Definition: geometry_type.hpp:47
Palette
Information about the currently used palette.
Definition: gfx_type.h:313
VideoDriver_SDL_Base::GetScreenSize
Dimension GetScreenSize() const override
Get the resolution of the main screen.
Definition: sdl2_v.cpp:711
VideoDriver_SDL_Base::sdl_window
struct SDL_Window * sdl_window
Main SDL window.
Definition: sdl2_v.h:47
VideoDriver_SDL_Base::GetVideoPointer
virtual void * GetVideoPointer()=0
Get a pointer to the video buffer.
VideoDriver_SDL_Base::Start
const char * Start(const StringList &param) override
Start this driver.
Definition: sdl2_v.cpp:555