Mercurial > projects > mde
annotate mde/gui/WidgetManager.d @ 76:65780e0e48e6
Re-enabled click event passing in the gui to make ButtonWidget work.
Bugfix (pass void* not class reference).
Change to allow compilation with dmd 1.027 (don't use DefaultData's Arg!() template).
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Mon, 28 Jul 2008 18:49:18 +0100 |
parents | 25cb7420dc91 |
children | ea58f277f487 |
rev | line source |
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1 /* LICENSE BLOCK |
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2 Part of mde: a Modular D game-oriented Engine |
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3 Copyright © 2007-2008 Diggory Hardy |
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4 |
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5 This program is free software: you can redistribute it and/or modify it under the terms |
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6 of the GNU General Public License as published by the Free Software Foundation, either |
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7 version 2 of the License, or (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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11 See the GNU General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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15 |
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16 /************************************************************************************************* |
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17 * The gui manager class. |
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18 * |
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19 * This is the module to use externally to create a graphical user interface (likely also with |
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20 * content modules). |
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21 *************************************************************************************************/ |
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22 module mde.gui.WidgetManager; |
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23 |
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24 public import mde.gui.WidgetData; |
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25 import mde.gui.widget.Ifaces; |
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26 import mde.gui.renderer.createRenderer; |
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27 |
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28 // For adding the input event callbacks and requesting redraws: |
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29 import imde = mde.imde; |
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30 import mde.input.Input; |
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31 import mde.scheduler.Scheduler; |
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32 |
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33 import tango.core.sync.Mutex; |
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34 import tango.util.log.Log : Log, Logger; |
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35 |
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36 private Logger logger; |
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37 static this () { |
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38 logger = Log.getLogger ("mde.gui.WidgetManager"); |
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39 |
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40 gui = new WidgetManager ("gui"); |
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41 } |
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42 |
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43 WidgetManager gui; |
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44 |
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45 |
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46 /************************************************************************************************* |
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47 * The widget manager. |
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48 * |
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49 * This is responsible for loading and saving an entire gui (although more than one may exist), |
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50 * controlling the rendering device (e.g. the screen or a texture), and providing user input. |
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51 * |
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52 * Currently mouse coordinates are passed to widgets untranslated. It may make sense to translate |
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53 * them and possibly drop events for some uses, such as if the gui is drawn to a texture. |
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54 * |
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55 * Aside from the IWidgetManager methods, this class should be thread-safe. |
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56 *************************************************************************************************/ |
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57 class WidgetManager : WidgetLoader { |
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58 /** Construct a new widget manager. |
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59 * |
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60 * params: |
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61 * fileName = Name of file specifying the gui, excluding path and extension. |
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62 */ |
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63 this (char[] file) { |
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64 super(file); |
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65 |
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66 // Events we want to know about: |
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67 imde.input.addMouseClickCallback(&clickEvent); |
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68 imde.input.addMouseMotionCallback(&motionEvent); |
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69 } |
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70 |
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71 |
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72 /** Draw the gui. */ |
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73 void draw() { |
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74 synchronized(mutex) |
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75 child.draw; |
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76 } |
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77 |
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78 |
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79 /** For mouse click events. |
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80 * |
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81 * Sends the event on to the relevant windows and all click callbacks. */ |
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82 void clickEvent (ushort cx, ushort cy, ubyte b, bool state) { |
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83 debug scope (failure) |
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84 logger.warn ("clickEvent: failed!"); |
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85 mutex.lock; |
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86 scope(exit) mutex.unlock; |
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87 |
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88 // NOTE: buttons receive the up-event even when drag-callbacks are in place. |
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89 foreach (dg; clickCallbacks) |
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90 // See IWidgetManager.addClickCallback's documentation: |
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91 if (dg (cast(wdabs)cx, cast(wdabs)cy, b, state)) return; |
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92 |
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93 // NOTE: do we need to test if the click was on the gui (and thus child)? |
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94 IChildWidget widg = child.getWidget (cast(wdabs)cx,cast(wdabs)cy); |
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95 if (widg !is null) |
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96 widg.clickEvent (cast(wdabs)cx,cast(wdabs)cy,b,state); |
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97 /+ FIXME: remove |
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98 foreach (i,w; windows) { |
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99 IWidget widg = w.getWidget (cast(wdabs)cx,cast(wdabs)cy); |
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100 if (widg !is null) { |
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101 // Bring to front |
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102 windows = w ~ windows[0..i] ~ windows[i+1..$]; |
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103 |
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104 widg.clickEvent (cast(wdabs)cx,cast(wdabs)cy,b,state); |
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105 requestRedraw; // in case we've only moved to front |
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106 return; // only pass to first window |
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107 } |
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108 }+/ |
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109 } |
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110 |
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111 /** For mouse motion events. |
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112 * |
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113 * Sends the event on to all motion callbacks. */ |
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114 void motionEvent (ushort cx, ushort cy) { |
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115 debug scope (failure) |
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116 logger.warn ("motionEvent: failed!"); |
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117 mutex.lock; |
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118 scope(exit) mutex.unlock; |
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119 |
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120 foreach (dg; motionCallbacks) |
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121 dg (cast(wdabs)cx, cast(wdabs)cy); |
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122 } |
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123 |
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124 |
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125 void setSize (int x, int y) { |
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126 mutex.lock; |
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127 scope(exit) mutex.unlock; |
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128 |
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129 w = cast(wdim) x; |
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130 h = cast(wdim) y; |
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131 |
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132 if (child is null) |
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133 return; // May not have been created before this is first run. |
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134 child.setWidth (w, -1); |
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135 child.setHeight (h, -1); |
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136 child.setPosition (0,0); |
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137 } |
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138 |
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139 //BEGIN IWidgetManager methods |
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140 // These methods are only intended for use within the gui package. They are not necessarily |
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141 // thread-safe. |
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142 IRenderer renderer () { |
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143 assert (rend !is null, "WidgetManager.renderer: rend is null"); |
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144 return rend; |
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145 } |
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146 |
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147 void requestRedraw () { |
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148 imde.mainSchedule.request(imde.SCHEDULE.DRAW); |
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149 } |
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150 |
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151 void addClickCallback (bool delegate(wdabs, wdabs, ubyte, bool) dg) { |
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152 clickCallbacks[dg.ptr] = dg; |
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153 } |
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154 void addMotionCallback (void delegate(wdabs, wdabs) dg) { |
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155 motionCallbacks[dg.ptr] = dg; |
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156 } |
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157 void removeCallbacks (void* frame) { |
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158 clickCallbacks.remove(frame); |
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159 motionCallbacks.remove(frame); |
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160 } |
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161 //END IWidgetManager methods |
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162 |
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163 protected: |
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164 /* Second stage of widget loading. */ |
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165 void createRootWidget () { |
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166 // The renderer needs to be created on the first load, but not after this. |
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167 if (rend is null) |
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168 rend = createRenderer (rendName); |
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169 |
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170 child = makeWidget ("root"); |
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171 |
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172 child.setWidth (w, -1); |
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173 child.setHeight (h, -1); |
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174 child.setPosition (0,0); |
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175 } |
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176 |
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177 private: |
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178 // callbacks indexed by their frame pointers: |
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179 bool delegate(wdabs cx, wdabs cy, ubyte b, bool state) [void*] clickCallbacks; |
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180 void delegate(wdabs cx, wdabs cy) [void*] motionCallbacks; |
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181 IRenderer rend; |
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182 wdim w,h; // area available to the widgets |
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183 } |