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/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file win32_v.h Base of the Windows video driver. */
#ifndef VIDEO_WIN32_H
#define VIDEO_WIN32_H
#include "video_driver.hpp"
#include <mutex>
#include <condition_variable>
/** Base class for Windows video drivers. */
class VideoDriver_Win32Base : public VideoDriver {
public:
VideoDriver_Win32Base() : main_wnd(nullptr), fullscreen(false), draw_mutex(nullptr), draw_signal(nullptr) {}
void Stop() override;
void MakeDirty(int left, int top, int width, int height) override;
void MainLoop() override;
bool ChangeResolution(int w, int h) override;
bool ToggleFullscreen(bool fullscreen) override;
void AcquireBlitterLock() override;
void ReleaseBlitterLock() override;
bool ClaimMousePointer() override;
void EditBoxLostFocus() override;
protected:
HWND main_wnd; ///< Handle to system window.
bool fullscreen; ///< Whether to use (true) fullscreen mode.
bool has_focus = false; ///< Does our window have system focus?
Rect dirty_rect; ///< Region of the screen that needs redrawing.
int width = 0; ///< Width in pixels of our display surface.
int height = 0; ///< Height in pixels of our display surface.
int width_org = 0; ///< Original monitor resolution width, before we changed it.
int height_org = 0; ///< Original monitor resolution height, before we changed it.
bool draw_threaded; ///< Whether the drawing is/may be done in a separate thread.
bool buffer_locked; ///< Video buffer was locked by the main thread.
volatile bool draw_continue; ///< Should we keep continue drawing?
std::recursive_mutex *draw_mutex; ///< Mutex to keep the access to the shared memory controlled.
std::condition_variable_any *draw_signal; ///< Signal to draw the next frame.
Dimension GetScreenSize() const override;
float GetDPIScale() override;
void InputLoop() override;
bool LockVideoBuffer() override;
void UnlockVideoBuffer() override;
void CheckPaletteAnim() override;
bool PollEvent() override;
void Initialize();
bool MakeWindow(bool full_screen);
void ClientSizeChanged(int w, int h, bool force = false);
/** Get screen depth to use for fullscreen mode. */
virtual uint8 GetFullscreenBpp();
/** (Re-)create the backing store. */
virtual bool AllocateBackingStore(int w, int h, bool force = false) = 0;
/** Get a pointer to the video buffer. */
virtual void *GetVideoPointer() = 0;
/** Hand video buffer back to the painting backend. */
virtual void ReleaseVideoPointer() {}
/** Palette of the window has changed. */
virtual void PaletteChanged(HWND hWnd) = 0;
private:
std::unique_lock<std::recursive_mutex> draw_lock;
static void PaintThreadThunk(VideoDriver_Win32Base *drv);
friend LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
};
/** The GDI video driver for windows. */
class VideoDriver_Win32GDI : public VideoDriver_Win32Base {
public:
VideoDriver_Win32GDI() : dib_sect(nullptr), gdi_palette(nullptr), buffer_bits(nullptr) {}
const char *Start(const StringList ¶m) override;
void Stop() override;
bool AfterBlitterChange() override;
const char *GetName() const override { return "win32"; }
protected:
HBITMAP dib_sect; ///< System bitmap object referencing our rendering buffer.
HPALETTE gdi_palette; ///< Palette object for 8bpp blitter.
void *buffer_bits; ///< Internal rendering buffer.
void Paint() override;
void *GetVideoPointer() override { return this->buffer_bits; }
void PaintThread() override;
bool AllocateBackingStore(int w, int h, bool force = false) override;
void PaletteChanged(HWND hWnd) override;
void MakePalette();
void UpdatePalette(HDC dc, uint start, uint count);
#ifdef _DEBUG
public:
static int RedrawScreenDebug();
#endif
};
/** The factory for Windows' video driver. */
class FVideoDriver_Win32GDI : public DriverFactoryBase {
public:
FVideoDriver_Win32GDI() : DriverFactoryBase(Driver::DT_VIDEO, 9, "win32", "Win32 GDI Video Driver") {}
Driver *CreateInstance() const override { return new VideoDriver_Win32GDI(); }
};
#ifdef WITH_OPENGL
/** The OpenGL video driver for windows. */
class VideoDriver_Win32OpenGL : public VideoDriver_Win32Base {
public:
VideoDriver_Win32OpenGL() : dc(nullptr), gl_rc(nullptr), anim_buffer(nullptr) {}
const char *Start(const StringList ¶m) override;
void Stop() override;
bool ToggleFullscreen(bool fullscreen) override;
bool AfterBlitterChange() override;
bool HasEfficient8Bpp() const override { return true; }
bool UseSystemCursor() override { return true; }
void ClearSystemSprites() override;
bool HasAnimBuffer() override { return true; }
uint8 *GetAnimBuffer() override { return this->anim_buffer; }
const char *GetName() const override { return "win32-opengl"; }
protected:
HDC dc; ///< Window device context.
HGLRC gl_rc; ///< OpenGL context.
bool vsync; ///< Enable VSync?
uint8 *anim_buffer; ///< Animation buffer from OpenGL back-end.
uint8 GetFullscreenBpp() override { return 32; } // OpenGL is always 32 bpp.
void Paint() override;
void PaintThread() override {}
bool AllocateBackingStore(int w, int h, bool force = false) override;
void *GetVideoPointer() override;
void ReleaseVideoPointer() override;
void PaletteChanged(HWND hWnd) override {}
const char *AllocateContext();
void DestroyContext();
};
/** The factory for Windows' OpenGL video driver. */
class FVideoDriver_Win32OpenGL : public DriverFactoryBase {
public:
FVideoDriver_Win32OpenGL() : DriverFactoryBase(Driver::DT_VIDEO, 10, "win32-opengl", "Win32 OpenGL Video Driver") {}
/* virtual */ Driver *CreateInstance() const override { return new VideoDriver_Win32OpenGL(); }
};
#endif /* WITH_OPENGL */
#endif /* VIDEO_WIN32_H */
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