1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef PSP_IMAGE_VIEWER_H 24 #define PSP_IMAGE_VIEWER_H 25 26 class InputHandler; 27 28 class ImageViewer : public DisplayClient { 29 public: 30 enum Event { 31 EVENT_NONE = -1, 32 EVENT_HIDE = 0, 33 EVENT_SHOW = 1, 34 EVENT_ZOOM_IN, 35 EVENT_ZOOM_OUT, 36 EVENT_MOVE_LEFT, 37 EVENT_MOVE_UP, 38 EVENT_MOVE_RIGHT, 39 EVENT_MOVE_DOWN, 40 EVENT_MOVE_STOP, 41 EVENT_NEXT_IMAGE, 42 EVENT_LAST_IMAGE, 43 }; 44 45 private: 46 Buffer *_buffer; 47 Palette *_palette; 48 GuRenderer *_renderer; 49 bool _visible; 50 bool _dirty; 51 bool _init; 52 uint32 _imageNum; // current image number 53 float _zoomFactor; // how much we're zooming in/out on the image 54 float _visibleHeight, _visibleWidth; 55 float _centerX, _centerY; 56 Event _movement; 57 58 InputHandler *_inputHandler; 59 DisplayManager *_displayManager; 60 61 void setFullScreenImageParams(); 62 void loadNextImage(); 63 void loadLastImage(); 64 void setViewerButtons(bool active); 65 void setConstantRendererOptions(); 66 void moveImageX(float val); 67 void moveImageY(float val); 68 bool load(int imageNum); 69 void unload(); 70 void runLoop(); // to get total pausing we have to do our own loop 71 72 void setZoom(float value); 73 void setOffsetParams(); 74 void modifyZoom(bool up); // up or down 75 void setVisible(bool visible); 76 77 public: 78 ImageViewer()79 ImageViewer() : _buffer(0), _palette(0), _visible(false), 80 _dirty(false), _init(false), _imageNum(0), 81 _zoomFactor(0.0f), _visibleHeight(0.0f), _visibleWidth(0.0f), 82 _centerX(0.0f), _centerY(0.0f), _movement(EVENT_MOVE_STOP), 83 _inputHandler(0), _displayManager(0) {} ~ImageViewer()84 ~ImageViewer() { unload(); } // deallocate images 85 bool load(); 86 void render(); isVisible()87 bool isVisible() { return _visible; } isDirty()88 bool isDirty() { return _dirty; } setDirty()89 void setDirty() { _dirty = true; } setClean()90 void setClean() { if (!_visible) // otherwise we want to keep rendering 91 _dirty = false; 92 } 93 void resetOnEngineDone(); 94 95 void handleEvent(uint32 event); 96 97 // pointer setters setInputHandler(InputHandler * inputHandler)98 void setInputHandler(InputHandler *inputHandler) { _inputHandler = inputHandler; } setDisplayManager(DisplayManager * displayManager)99 void setDisplayManager(DisplayManager *displayManager) { _displayManager = displayManager; } 100 }; 101 102 #endif /* PSP_IMAGE_VIEWER_H */ 103