screen_manager.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef TITANIC_SCREEN_MANAGER_H
#define TITANIC_SCREEN_MANAGER_H

#include "common/scummsys.h"
#include "common/array.h"
#include "titanic/support/direct_draw.h"
#include "titanic/support/font.h"
#include "titanic/input_handler.h"
#include "titanic/support/mouse_cursor.h"
#include "titanic/support/text_cursor.h"
#include "titanic/support/video_surface.h"
#include "titanic/core/resource_key.h"

namespace Titanic {

enum SurfaceNum {
    SURFACE_PRIMARY = -1,       // Surface 0
    SURFACE_BACKBUFFER = -1     // Surface -1
};

class TitanicEngine;

class CScreenManager {
    struct VideoSurfaceEntry {
        CVideoSurface *_surface;
        Rect _bounds;
    };
protected:
    TitanicEngine *_vm;
public:
    static CScreenManager *_screenManagerPtr;
    static CScreenManager *_currentScreenManagerPtr;

    static CScreenManager *setCurrent();
public:
    Common::Array<VideoSurfaceEntry> _backSurfaces;
    Rect _frontSurfaceBounds;
    CVideoSurface *_frontRenderSurface;
    CMouseCursor *_mouseCursor;
    CTextCursor *_textCursor;
    CInputHandler *_inputHandler;
    int _fontNumber;
public:
    CScreenManager(TitanicEngine *vm);
    virtual ~CScreenManager();

    void fn1() {}
    void fn2() {}

    virtual void setWindowHandle(int v);
    virtual bool resetWindowHandle(int v);

    virtual void setMode(int width, int height, int bpp, uint numBackSurfaces, bool flag2) = 0;

    virtual void drawCursors() = 0;

    virtual CVideoSurface *lockSurface(SurfaceNum surfaceNum) = 0;

    virtual void unlockSurface(CVideoSurface *surface) = 0;

    virtual CVideoSurface *getSurface(SurfaceNum surfaceNum) const = 0;

    virtual CVideoSurface *getFrontRenderSurface() const = 0;

    virtual void fillRect(SurfaceNum surfaceNum, Rect *rect, byte r, byte g, byte b) = 0;

    virtual void blitFrom(SurfaceNum surfaceNum, CVideoSurface *src, const Point *destPos = nullptr,
        const Rect *srcRect = nullptr) = 0;

    virtual void blitFrom(SurfaceNum surfaceNum, const Rect *rect, CVideoSurface *src, int v = 0) = 0;

    virtual int writeString(int surfaceNum, const Rect &destRect,
        int yOffset, const CString &str, CTextCursor *textCursor) = 0;

    virtual void writeString(int surfaceNum, const Point &destPos,
        const Rect &clipRect, const CString &str, int maxWidth) = 0;

    virtual void setFontColor(byte r, byte g, byte b) = 0;

    virtual int getTextBounds(const CString &str, int maxWidth, Point *sizeOut = nullptr) const = 0;

    virtual int getFontHeight() const = 0;

    virtual int stringWidth(const CString &str) = 0;

    virtual void frameRect(SurfaceNum surfaceNum, const Rect &rect, byte r, byte g, byte b) = 0;

    virtual void clearSurface(SurfaceNum surfaceNum, Rect *_bounds) = 0;

    virtual void resizeSurface(CVideoSurface *surface, int width, int height, int bpp = 16) = 0;

    virtual CVideoSurface *createSurface(int w, int h, int bpp = 16) = 0;

    virtual CVideoSurface *createSurface(const CResourceKey &key) = 0;

    virtual Point getScreenTopLeft() { return Point(0, 0); }

    virtual void waitForVSync() {}

    virtual void showCursor() = 0;

    virtual void hideCursor() = 0;

    void setSurfaceBounds(SurfaceNum surfaceNum, const Rect &r);

    int setFontNumber(int fontNumber);

    void preLoad();
};

class OSScreenManager: CScreenManager {
private:
    DirectDrawManager _directDrawManager;

    void destroyFrontAndBackBuffers();

    void loadCursors();

    DirectDrawSurface *getDDSurface(SurfaceNum surfaceNum);
public:
    int _field48;
    int _field4C;
    int _field50;
    int _field54;
    STFont _fonts[4];
public:
    OSScreenManager(TitanicEngine *vm);
    ~OSScreenManager() override;

    void setMode(int width, int height, int bpp, uint numBackSurfaces, bool flag2) override;

    void drawCursors() override;

    CVideoSurface *lockSurface(SurfaceNum surfaceNum) override;

    void unlockSurface(CVideoSurface *surface) override;

    CVideoSurface *getSurface(SurfaceNum surfaceNum) const override;

    CVideoSurface *getFrontRenderSurface() const override {
        return _frontRenderSurface;
    }


    void fillRect(SurfaceNum surfaceNum, Rect *rect, byte r, byte g, byte b) override;

    void blitFrom(SurfaceNum surfaceNum, CVideoSurface *src, const Point *destPos,
        const Rect *srcRect = nullptr) override;

    void blitFrom(SurfaceNum surfaceNum, const Rect *rect, CVideoSurface *src, int v = 0) override;

    int writeString(int surfaceNum, const Rect &destRect,
        int yOffset, const CString &str, CTextCursor *textCursor) override;

    void writeString(int surfaceNum, const Point &destPos,
        const Rect &clipRect, const CString &str, int lineWidth = 0) override;

    void setFontColor(byte r, byte g, byte b) override;

    int getTextBounds(const CString &str, int maxWidth, Point *sizeOut = nullptr) const override;

    int getFontHeight() const override;

    int stringWidth(const CString &str) override;

    void frameRect(SurfaceNum surfaceNum, const Rect &rect, byte r, byte g, byte b) override;

    void clearSurface(SurfaceNum surfaceNum, Rect *bounds) override;

    void resizeSurface(CVideoSurface *surface, int width, int height, int bpp = 16) override;

    CVideoSurface *createSurface(int w, int h, int bpp = 16) override;

    CVideoSurface *createSurface(const CResourceKey &key) override;

    void showCursor() override;

    void hideCursor() override;
};

} // End of namespace Titanic

#endif /* TITANIC_SCREEN_MANAGER_H */