base_surface_osystem.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/>.
 *
 */

/*
 * This file is based on WME Lite.
 * http://dead-code.org/redir.php?target=wmelite
 * Copyright (c) 2011 Jan Nedoma
 */

#ifndef WINTERMUTE_BASE_SURFACESDL_H
#define WINTERMUTE_BASE_SURFACESDL_H

#include "graphics/surface.h"
#include "graphics/transform_struct.h" // for Graphics::AlphaType

#include "engines/wintermute/base/gfx/base_surface.h"

#include "common/list.h"

namespace Wintermute {
class BaseImage;
class BaseSurfaceOSystem : public BaseSurface {
public:
    BaseSurfaceOSystem(BaseGame *inGame);
    ~BaseSurfaceOSystem() override;

    bool create(const Common::String &filename, bool defaultCK, byte ckRed, byte ckGreen, byte ckBlue, int lifeTime = -1, bool keepLoaded = false) override;
    bool create(int width, int height) override;

    bool isTransparentAt(int x, int y) override;
    bool isTransparentAtLite(int x, int y) override;

    bool startPixelOp() override;
    bool endPixelOp() override;

    bool displayTransRotate(int x, int y, uint32 angle, int32 hotspotX, int32 hotspotY, Rect32 rect, float zoomX, float zoomY, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
    bool displayTransZoom(int x, int y, Rect32 rect, float zoomX, float zoomY, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
    bool displayTrans(int x, int y, Rect32 rect, uint32 alpha = Graphics::kDefaultRgbaMod, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false, int offsetX = 0, int offsetY = 0) override;
    bool display(int x, int y, Rect32 rect, Graphics::TSpriteBlendMode blendMode = Graphics::BLEND_NORMAL, bool mirrorX = false, bool mirrorY = false) override;
    bool displayTiled(int x, int y, Rect32 rect, int numTimesX, int numTimesY) override;
    bool putSurface(const Graphics::Surface &surface, bool hasAlpha = false) override;
    /*  static unsigned DLL_CALLCONV ReadProc(void *buffer, unsigned size, unsigned count, fi_handle handle);
        static int DLL_CALLCONV SeekProc(fi_handle handle, long offset, int origin);
        static long DLL_CALLCONV TellProc(fi_handle handle);*/
    int getWidth() override {
        if (!_loaded) {
            finishLoad();
        }
        if (_surface) {
            return _surface->w;
        }
        return _width;
    }
    int getHeight() override {
        if (!_loaded) {
            finishLoad();
        }
        if (_surface) {
            return _surface->h;
        }
        return _height;
    }
    bool getPixel(int x, int y, byte *r, byte *g, byte *b, byte *a) override {
        if (!_loaded) {
            finishLoad();
        }
        if (_surface) {
            uint32 pixel = getPixelAt(_surface, x, y);
            _surface->format.colorToARGB(pixel, *a, *r, *g, *b);
            return STATUS_OK;
        }
        return STATUS_FAILED;
    }

    Graphics::AlphaType getAlphaType() const { return _alphaType; }
private:
    Graphics::Surface *_surface;
    bool _loaded;
    bool finishLoad();
    bool drawSprite(int x, int y, Rect32 *rect, Rect32 *newRect, Graphics::TransformStruct transformStruct);
    void genAlphaMask(Graphics::Surface *surface);
    uint32 getPixelAt(Graphics::Surface *surface, int x, int y);

    uint32 _rotation;
    Graphics::AlphaType _alphaType;
    void *_lockPixels;
    int _lockPitch;
    byte *_alphaMask;
};

} // End of namespace Wintermute

#endif