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/* 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 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.
*
* $URL$
* $Id$
*
*/
#ifndef PSP_IMAGE_VIEWER_H
#define PSP_IMAGE_VIEWER_H
class InputHandler;
class ImageViewer : public DisplayClient {
public:
enum Event {
EVENT_NONE = -1,
EVENT_HIDE = 0,
EVENT_SHOW = 1,
EVENT_ZOOM_IN,
EVENT_ZOOM_OUT,
EVENT_MOVE_LEFT,
EVENT_MOVE_UP,
EVENT_MOVE_RIGHT,
EVENT_MOVE_DOWN,
EVENT_MOVE_STOP,
EVENT_NEXT_IMAGE,
EVENT_LAST_IMAGE,
};
private:
Buffer *_buffer;
Palette *_palette;
GuRenderer *_renderer;
bool _visible;
bool _dirty;
bool _init;
uint32 _imageNum; // current image number
float _zoomFactor; // how much we're zooming in/out on the image
float _visibleHeight, _visibleWidth;
float _centerX, _centerY;
Event _movement;
InputHandler *_inputHandler;
DisplayManager *_displayManager;
void setFullScreenImageParams();
void loadNextImage();
void loadLastImage();
void setViewerButtons(bool active);
void setConstantRendererOptions();
void moveImageX(float val);
void moveImageY(float val);
bool load(int imageNum);
void unload();
void runLoop(); // to get total pausing we have to do our own loop
void setZoom(float value);
void setOffsetParams();
void modifyZoom(bool up); // up or down
void setVisible(bool visible);
public:
ImageViewer() : _buffer(0), _palette(0), _visible(false),
_dirty(false), _init(false), _imageNum(0),
_zoomFactor(0.0f), _visibleHeight(0.0f), _visibleWidth(0.0f),
_centerX(0.0f), _centerY(0.0f), _movement(EVENT_MOVE_STOP),
_inputHandler(0), _displayManager(0) {}
~ImageViewer() { unload(); } // deallocate images
bool load();
void render();
bool isVisible() { return _visible; }
bool isDirty() { return _dirty; }
void setDirty() { _dirty = true; }
void setClean() { if (!_visible) // otherwise we want to keep rendering
_dirty = false;
}
void resetOnEngineDone();
void handleEvent(uint32 event);
// pointer setters
void setInputHandler(InputHandler *inputHandler) { _inputHandler = inputHandler; }
void setDisplayManager(DisplayManager *displayManager) { _displayManager = displayManager; }
};
#endif /* PSP_IMAGE_VIEWER_H */
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