surface.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.
 *
 * Additional copyright for this file:
 * Copyright (C) 1995-1997 Presto Studios, Inc.
 *
 * 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 PEGASUS_SURFACE_H
#define PEGASUS_SURFACE_H
 
#include "common/rect.h"
#include "common/str.h"
 
#include "pegasus/elements.h"
#include "pegasus/types.h"
 
namespace Common {
    class MacResManager;
}
 
namespace Graphics {
    struct Surface;
}
 
namespace Video {
    class VideoDecoder;
}
 
namespace Pegasus {
 
// Surface bounds are always normalized.
 
class Surface {
public:
    Surface();
    virtual ~Surface();
 
    virtual void allocateSurface(const Common::Rect &);
    virtual void deallocateSurface();
    virtual void shareSurface(Surface *surface);
    bool isSurfaceValid() const { return _surface != 0; }
 
    Graphics::Surface *getSurface() const { return _surface; }
    void getSurfaceBounds(Common::Rect &r) { r = _bounds; }
 
    // None of the copyToCurrentPort* functions do any sanity checks.
    // It's up to clients to make sure that the Surface is valid.
    void copyToCurrentPort() const;
    void copyToCurrentPortTransparent() const;
    void copyToCurrentPort(const Common::Rect &) const;
    void copyToCurrentPortTransparent(const Common::Rect &) const;
    void copyToCurrentPort(const Common::Rect &, const Common::Rect &) const;
    void copyToCurrentPortTransparent(const Common::Rect &, const Common::Rect &) const;
    void copyToCurrentPortMasked(const Common::Rect &, const Common::Rect &, const Surface *) const;
    void copyToCurrentPortTransparentGlow(const Common::Rect &, const Common::Rect &) const;
    void scaleTransparentCopy(const Common::Rect &, const Common::Rect &) const;
    void scaleTransparentCopyGlow(const Common::Rect &, const Common::Rect &) const;
 
    virtual void getImageFromPICTFile(const Common::Path &fileName);
    virtual void getImageFromPICTResource(Common::MacResManager *resFork, uint16 id);
    virtual void getImageFromMovieFrame(Video::VideoDecoder *, TimeValue);
 
protected:
    bool _ownsSurface;
    Graphics::Surface *_surface;
    Common::Rect _bounds;
 
private:
    bool getImageFromPICTStream(Common::SeekableReadStream *stream);
 
    uint32 getGlowColor(uint32 color) const;
    bool isTransparent(uint32 color) const;
};
 
class PixelImage : public Surface {
public:
    PixelImage();
    ~PixelImage() override {}
 
    void drawImage(const Common::Rect &, const Common::Rect &);
 
protected:
    virtual void setTransparent(bool transparent) { _transparent = transparent; }
 
    bool _transparent;
};
 
class Frame : public PixelImage {
public:
    Frame() {}
    ~Frame() override {}
 
    virtual void initFromPICTFile(const Common::Path &fileName, bool transparent = false);
    virtual void initFromPICTResource(Common::MacResManager *resFork, uint16 id, bool transparent = false);
    virtual void initFromMovieFrame(Video::VideoDecoder *, TimeValue, bool transparent = false);
};
 
class SpriteFrame : public Frame {
friend class Sprite;
public:
    SpriteFrame() { _referenceCount = 0; }
    ~SpriteFrame() override {}
 
protected:
    uint32 _referenceCount;
};
 
class Picture : public DisplayElement, public Frame {
public:
    Picture(const DisplayElementID id) : DisplayElement(id) {}
    ~Picture() override {}
 
    void initFromPICTFile(const Common::Path &fileName, bool transparent = false) override;
    void initFromPICTResource(Common::MacResManager *resFork, uint16 id, bool transparent = false) override;
    void initFromMovieFrame(Video::VideoDecoder *, TimeValue, bool transparent = false) override;
 
    void draw(const Common::Rect &) override;
};
 
} // End of namespace Pegasus
 
#endif