resvm-sdl-graphics.h

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/* ResidualVM - A 3D game interpreter
 *
 * ResidualVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#ifndef BACKENDS_GRAPHICS_SDL_RESVMSDLGRAPHICS_H
#define BACKENDS_GRAPHICS_SDL_RESVMSDLGRAPHICS_H

#include "backends/graphics/sdl/sdl-graphics.h"

#include "common/events.h"
#include "common/rect.h"

#include "math/rect2d.h"

class SdlEventSource;

class ResVmSdlGraphicsManager : public SdlGraphicsManager, public Common::EventObserver {
public:
    struct Capabilities {
        uint desktopWidth;
        uint desktopHeight;

        bool openGLFrameBuffer;

        Capabilities() :
                desktopWidth(0), desktopHeight(0),
                openGLFrameBuffer(false) {}
    };

    ResVmSdlGraphicsManager(SdlEventSource *source, SdlWindow *window, const Capabilities &capabilities);
    ~ResVmSdlGraphicsManager() override;

    // SdlGraphicsManager API
    void activateManager() override;
    void deactivateManager() override;
    void notifyVideoExpose() override;
    bool notifyMousePosition(Common::Point mouse) override;

    // GraphicsManager API - Features
    void setFeatureState(OSystem::Feature f, bool enable) override;
    bool getFeatureState(OSystem::Feature f) const override;

    // GraphicsManager API - Graphics mode
    const OSystem::GraphicsMode *getSupportedGraphicsModes() const override;
    int getDefaultGraphicsMode() const override;
    bool setGraphicsMode(int mode) override;
    int getGraphicsMode() const override;
    void resetGraphicsScale() override;
#ifdef USE_RGB_COLOR
    Graphics::PixelFormat getScreenFormat() const override { return _screenFormat; }
    Common::List<Graphics::PixelFormat> getSupportedFormats() const override;
#endif
    void initSize(uint w, uint h, const Graphics::PixelFormat *format = nullptr) override;
    int getScreenChangeID() const override { return _screenChangeCount; }
    void beginGFXTransaction() override;
    OSystem::TransactionError endGFXTransaction() override;

protected:
    // PaletteManager API
    void setPalette(const byte *colors, uint start, uint num) override;
    void grabPalette(byte *colors, uint start, uint num) const override;

public:
    // GraphicsManager API - Draw methods
    void copyRectToScreen(const void *buf, int pitch, int x, int y, int w, int h) override;
    Graphics::Surface *lockScreen() override;
    void unlockScreen() override;
    void fillScreen(uint32 col) override;
    void setShakePos(int shakeOffset) override;
    void saveScreenshot() override;

    // GraphicsManager API - Focus Rectangle
    void setFocusRectangle(const Common::Rect& rect) override;
    void clearFocusRectangle() override;

    // GraphicsManager API - Overlay
    Graphics::PixelFormat getOverlayFormat() const override { return _overlayFormat; }

    // GraphicsManager API - Mouse
    bool showMouse(bool visible) override;
    bool lockMouse(bool lock) override; // ResidualVM specific method
    void setMouseCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const Graphics::PixelFormat *format = nullptr) override;
    void setCursorPalette(const byte *colors, uint start, uint num) override;

#ifdef USE_OSD
    void displayMessageOnOSD(const char *msg) override;
#endif

    // Common::EventObserver API
    bool notifyEvent(const Common::Event &event) override;

    bool isMouseLocked() const;

protected:
    const Capabilities &_capabilities;

    bool _fullscreen;
    bool _lockAspectRatio;
    uint _engineRequestedWidth, _engineRequestedHeight;

    int _screenChangeCount;

    bool _overlayVisible;
    Graphics::PixelFormat _overlayFormat;

#ifdef USE_RGB_COLOR
    Graphics::PixelFormat _screenFormat;
    Common::List<Graphics::PixelFormat> _supportedFormats;
#endif

    Common::Rect getPreferredFullscreenResolution();

    virtual bool saveScreenshot(const Common::String &file) const  = 0;
};

#endif