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annotate engine/core/video/fonts/textrenderpool.h @ 654:5d6b1820b953

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* Added the ability to change screen modes on the fly. This works both in OpenGL and SDL modes. * Added IEngineChangeListener so the client can update the cameras viewport if the screen mode has been changed. I chose to do it this way because the engine has no way to know which camera it should update. It will be up to the client to do it. * The cursor surface is now correctly freed when exiting. * Added DeviceCaps::getNearestScreenMode() for the client to request a supported screen mode. closes[t:315]
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Thu, 21 Oct 2010 18:50:50 +0000
parents 90005975cdbb
children
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_FONTS_TEXTRENDERPOOL_H
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23 #define FIFE_FONTS_TEXTRENDERPOOL_H
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24
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25 // Standard C++ library includes
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26 #include <list>
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27 #include <string>
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28
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29 // Platform specific includes
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30
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31 // 3rd party library includes
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32 #include <SDL.h>
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33
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34 // FIFE includes
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35 // These includes are split up in two parts, separated by one empty line
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36 // First block: files included from the FIFE root src directory
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37 // Second block: files included from the same folder
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38 #include "util/time/timer.h"
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39
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40 struct SDL_Surface;
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41 namespace FIFE {
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42 class FontBase;
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43 class Image;
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44
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45 /** Generic pool for rendered text
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46 * Caches a number of Images with text, as rendered by a Font.
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47 * Makes sure no more than a maximum number of strings is pooled at a time.
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48 * Automatically removes pooled strings not used for a minute.
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49 * Doesn't use resources (apart from a minimum) if not used after a while.
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50 *
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51 * @todo Should probably use a @c std::map instead of a @c std::list
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52 */
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53 class TextRenderPool {
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54 public:
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55 /** Constructor
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56 * Constructs a pool with a maximum of poolSize entries
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57 */
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58 TextRenderPool(size_t poolSize = 200);
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59
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60 /** Destructor
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61 */
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62 ~TextRenderPool();
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63
654
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64 /** Invalidates all cached text images
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65 */
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66 void invalidateCachedText();
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67
0
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68 /** Get a string image
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69 */
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70 Image* getRenderedText( FontBase* fontbase, const std::string& text);
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71
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72 /** Add a string image
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73 */
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74 void addRenderedText( FontBase* fontbase, const std::string& text, Image* image);
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75
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76 /** Remove entries not used since a minute
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77 * Is a timer callback.
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78 */
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79 void removeOldEntries();
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80
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81 protected:
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82 typedef struct {
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83 std::string text;
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84 SDL_Color color;
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85 bool antialias;
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86 int glyph_spacing;
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87 int row_spacing;
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88 uint32_t timestamp;
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89
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90 Image* image;
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91 } s_pool_entry;
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92
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93 typedef std::list<s_pool_entry> type_pool;
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94 type_pool m_pool;
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95 size_t m_poolSize;
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96 size_t m_poolMaxSize;
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97
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98 Timer m_collectTimer;
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99 };
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100 }
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101 #endif