Mercurial > projects > mde
annotate mde/gui/WidgetManager.d @ 129:ad91de8867a0
Added a widget size printing debug function. Fixed a bug in SwitchWidget.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Thu, 15 Jan 2009 16:52:46 +0000 |
parents | 41582439a42b |
children | 9cff74f68b84 |
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 base. |
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18 * |
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19 * This contains most of the code required by a window manager, but does not interact with a screen |
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20 * or get user input. Rendering is handled separately by the renderer anyway. |
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21 *************************************************************************************************/ |
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22 module mde.gui.WidgetManager; |
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23 |
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24 import mde.gui.WidgetDataSet; |
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25 import mde.gui.widget.Ifaces; |
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26 import mde.gui.exception; |
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27 |
36
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28 import imde = mde.imde; |
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29 import mde.lookup.Options; // miscOpts.L10n callback |
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30 import mde.content.Content; |
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31 import Items = mde.content.Items; // loadTranslation |
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32 debug import mde.content.miscContent; // Debug menu |
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33 |
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34 import mde.file.mergetag.Reader; |
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35 import mde.file.mergetag.Writer; |
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36 import mde.setup.paths; |
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37 |
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38 // Widgets to create: |
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39 import mde.gui.widget.layout; |
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40 import mde.gui.widget.miscWidgets; |
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41 import mde.gui.widget.TextWidget; |
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42 import mde.gui.widget.miscContent; |
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43 import mde.gui.widget.Floating; |
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44 import mde.gui.widget.PopupMenu; |
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45 |
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46 import tango.core.sync.Mutex; |
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47 import tango.util.log.Log : Log, Logger; |
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48 import tango.util.container.SortedMap; |
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49 |
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50 private Logger logger; |
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51 static this () { |
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52 logger = Log.getLogger ("mde.gui.WidgetManager"); |
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53 } |
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54 |
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55 /************************************************************************************************* |
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56 * Contains the code for loading and saving an entire gui (more than one may exist), but not the |
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57 * code for drawing it or handling user input. |
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58 * |
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59 * This abstract class exists solely for separating out some of the functionality. |
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60 *************************************************************************************************/ |
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61 abstract scope class AWidgetManager : IWidgetManager |
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62 { |
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63 /** Construct a new widget loader. |
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64 * |
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65 * params: |
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66 * fileName = Name of file specifying the gui, excluding path and extension. |
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67 */ |
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68 protected this (char[] file) { |
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69 mutex = new Mutex; // Used on functions intended to be called from outside the gui package. |
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70 fileName = file; |
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71 miscOpts.L10n.addCallback (&reloadStrings); |
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72 |
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73 clickCallbacks = new typeof(clickCallbacks); |
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74 motionCallbacks = new typeof(motionCallbacks); |
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75 |
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76 debug { |
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77 auto lWS = new EventContent ("logWidgetSize"); |
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78 lWS.addCallback (&logWidgetSize); |
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79 imde.menu.append (lWS); |
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80 } |
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81 } |
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82 |
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83 /* Load the widgets' data from the file specified to the CTOR. |
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84 * |
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85 * params: |
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86 * allDesigns = Load all sections |
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87 */ |
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88 private void loadData (bool allDesigns = false) { |
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89 if (allLoaded || (defaultDesign !is null && allDesigns == false)) |
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90 return; // test if already loaded |
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91 |
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92 // Set up a reader |
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93 scope IReader reader; |
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94 try { |
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95 reader = confDir.makeMTReader (fileName, PRIORITY.HIGH_LOW, null, true); |
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96 |
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97 // Read from the HEADER: |
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98 // Get the renderer |
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99 char[]* p = "Renderer" in reader.dataset.header._charA; |
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100 if (p is null || *p is null) { |
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101 logger.warn ("No renderer specified: using \"Simple\""); |
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102 rendName = "Simple"; |
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103 } |
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104 else |
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105 rendName = *p; |
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106 |
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107 // Get which section to use |
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108 p = "Design" in reader.dataset.header._charA; |
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109 if (p is null || *p is null) { |
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110 logger.warn ("No gui design specified: trying \"Default\""); |
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111 defaultDesign = "Default"; |
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112 } |
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113 else |
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114 defaultDesign = *p; |
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115 |
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116 // Read the body: |
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117 // Load the chosen design |
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118 reader.dataSecCreator = delegate mt.IDataSection(mt.ID id) { |
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119 WidgetDataSet* p = id in data; |
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120 if (p is null) { |
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121 data[id] = new WidgetDataSet; |
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122 return *(id in data); |
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123 } |
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124 return *p; |
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125 }; |
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126 |
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127 if (allDesigns) { |
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128 reader.read; |
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129 allLoaded = true; |
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130 } else |
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131 reader.read([defaultDesign]); |
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132 } catch (NoFileException) { |
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133 logger.error ("Unable to load GUI: no config file: "~fileName); |
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134 // just return: not a fatal error (so long as the game can run without a GUI!) |
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135 } catch (Exception e) { |
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136 logger.error ("Unable to load GUI: errors parsing config file ("~confDir.getFileName(fileName,PRIORITY.HIGH_LOW)~"):"); |
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137 logger.error (e.msg); |
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138 throw new GuiException ("Failure parsing config file"); |
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139 } |
128
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140 |
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141 Items.loadTranslation (); |
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142 } |
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143 |
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144 /** Load the gui from some design. |
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145 * |
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146 * If a design was previously loaded, its changes are saved first. |
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147 * |
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148 * Params: |
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149 * name = Design to load. If null, the default will be loaded. |
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150 */ |
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151 void loadDesign (char[] name = null) { |
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152 if (changes !is null) // A design was previously loaded |
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153 save; // own lock |
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154 |
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155 mutex.lock; |
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156 scope(exit) mutex.unlock; |
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157 |
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158 // Load data (loadData tests if it's already loaded first): |
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159 if (name is null) { |
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160 loadData (false); |
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161 name = defaultDesign; |
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162 } else |
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163 loadData (true); |
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164 |
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165 |
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166 // Get data: |
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167 auto p = name in data; |
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168 while (p is null) { |
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169 if (name == defaultDesign) |
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170 throw new GuiException ("Unable to load [specified or] default design"); |
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171 name = defaultDesign; // try again with the default |
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172 p = name in data; |
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173 } |
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174 curData = *p; |
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175 |
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176 // Get/create a changes section: |
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177 if (changesDS is null) |
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178 changesDS = new mt.DataSet; |
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179 |
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180 mt.IDataSection* q = name in changesDS.sec; |
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181 if (!q || ((changes = cast(WidgetDataChanges) *q) is null)) { |
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182 changes = new WidgetDataChanges (curData); |
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183 changesDS.sec[name] = changes; |
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184 } |
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185 |
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186 // Create the widgets: |
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187 createRootWidget; |
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188 } |
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189 |
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190 /** Save changes, if any exist. |
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191 * |
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192 * Is run when the manager is destroyed, but could be run at other times too. */ |
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193 void save () { |
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194 preSave; |
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195 |
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196 mutex.lock; |
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197 scope(exit) mutex.unlock; |
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198 |
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199 // Make all widgets save any changed data: |
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200 child.saveChanges; |
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201 |
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202 if (changes.noChanges) |
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203 return; |
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204 |
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205 if (loadUserFile) { // merge entries from user file into current changes |
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206 try { |
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207 scope IReader reader = confDir.makeMTReader ( |
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208 fileName, PRIORITY.HIGH_ONLY, changesDS, true); |
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209 |
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210 // Create if necessary, only corresponding to existing designs read: |
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211 reader.dataSecCreator = delegate mt.IDataSection(mt.ID id) { |
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212 WidgetDataSet* p = id in data; |
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213 if (p is null) |
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214 throw new Exception ("File has changed since it was loaded!"); |
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215 return new WidgetDataChanges (*p); |
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216 }; |
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217 |
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218 reader.read; |
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219 } catch (NoFileException) { |
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220 // No user file exists; not an error. |
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221 } catch (Exception e) { |
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222 logger.error ("Error reading "~confDir.getFileName(fileName,PRIORITY.HIGH_ONLY)~" prior to saving:"); |
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223 logger.error (e.msg); |
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224 logger.error ("Overwriting the file."); |
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225 // Continue... |
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226 } |
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227 loadUserFile = false; // don't need to do it again |
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228 } |
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229 |
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230 try { // Save |
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231 IWriter writer; |
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232 writer = confDir.makeMTWriter (fileName, changesDS); |
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233 writer.write; |
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234 } catch (Exception e) { |
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235 logger.error ("Saving to "~confDir.getFileName(fileName,PRIORITY.HIGH_ONLY)~" failed:"); |
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236 logger.error (e.msg); |
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237 // No point in throwing since it doesn't affect anything else. |
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238 } |
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239 } |
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240 |
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241 /** Get the names of all designs available. */ |
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242 char[][] designs() { |
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243 synchronized(mutex) { |
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244 loadData (true); |
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245 return data.keys; |
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246 } |
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247 } |
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248 |
110
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249 /** Called when translation strings have been reloaded. */ |
115
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250 void reloadStrings (Content) { |
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251 Items.loadTranslation; |
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252 child.setup (++setupN, 2); |
112
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253 child.setWidth (w, -1); |
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254 child.setHeight (h, -1); |
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255 child.setPosition (0,0); |
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256 requestRedraw; |
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257 } |
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258 |
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259 //BEGIN IParentWidget methods |
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260 // If call reaches the widget manager there isn't any recursion. |
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261 //NOTE: should be override |
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262 final void recursionCheck (widgetID) {} |
126
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263 |
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264 override void minWChange (IChildWidget widget, wdim nmw) { |
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265 debug assert (widget is child, "WM.mSC (code error)"); |
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266 mw = nmw; |
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267 if (w < nmw) { |
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268 child.setWidth (nmw, -1); |
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269 w = nmw; |
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270 } |
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271 child.setPosition (0,0); |
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272 requestRedraw; |
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273 } |
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274 override void minHChange (IChildWidget widget, wdim nmh) { |
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275 debug assert (widget is child, "WM.mSC (code error)"); |
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276 mh = nmh; |
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277 if (h < nmh) { |
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278 child.setHeight (nmh, -1); |
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279 h = nmh; |
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280 } |
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281 child.setPosition (0,0); |
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282 requestRedraw; |
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283 } |
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284 //END IParentWidget methods |
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285 |
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286 //BEGIN IWidgetManager methods |
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287 override IChildWidget makeWidget (IParentWidget parent, widgetID id, IContent content = null) |
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288 { |
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289 debug assert (parent, "makeWidget: parent is null (code error)"); |
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290 debug scope (failure) |
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291 logger.warn ("Creating widget \""~id~"\" failed."); |
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292 |
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293 WidgetData data = curData[id]; |
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294 if (data.ints.length < 1) { |
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295 logger.error ("No int data; creating a debug widget"); |
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296 data.ints = [WIDGET_TYPE.Debug]; |
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297 } |
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298 int type = data.ints[0]; // type is first element of data |
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299 |
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300 try { |
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301 // Statically programmed binary search on type, returning a new widget or calling a |
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302 // function: |
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303 //pragma (msg, binarySearch ("type", WIDGETS)); |
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304 mixin (binarySearch ("type", WIDGETS)); |
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305 // Not returned a new widget: |
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306 logger.error ("Bad widget type: {}; creating a debug widget instead",type); |
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307 } catch (Exception e) { |
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308 logger.error ("Error creating widget: {}; creating a debug widget instead.", e.msg); |
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309 } |
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310 |
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311 return new DebugWidget (this, this, id, data); |
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312 } |
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313 |
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314 override WidgetData widgetData (widgetID id) { |
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315 return curData[id]; |
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316 } |
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317 override void widgetData (widgetID id, WidgetData d) { |
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318 changes[id] = d; // also updates WidgetDataSet in data. |
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319 } |
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320 |
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321 override wdims dimData (widgetID id) { |
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322 return curData.dims (id); |
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323 } |
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324 override void dimData (widgetID id, wdims d) { |
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325 changes.setDims(id, d); // also updates WidgetDataSet in data. |
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326 } |
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327 |
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328 // These methods are only intended for use within the gui package. They are not necessarily |
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329 // thread-safe. |
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330 IRenderer renderer () { |
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331 assert (rend !is null, "WidgetManager.renderer: rend is null"); |
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332 return rend; |
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333 } |
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334 |
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335 void addPopup (IChildWidget parnt, IChildWidget widg, int flags = 0) { |
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336 debug assert (parnt && widg, "addPopup: null widget"); |
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337 if (popups.length >= popupsMem.length) |
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338 popupsMem.length = popupsMem.length * 2 + 2; |
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339 with (popupsMem[popups.length]) { |
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340 parent = parnt; |
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341 widget = widg; |
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342 w = widg.width; |
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343 h = widg.height; |
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344 if (flags & 1) { |
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345 y = parent.yPos; |
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346 if (y+h > this.h) y += parent.height - h; |
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347 x = parent.xPos + parent.width; |
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348 if (x+w > this.w) x = parent.xPos - w; |
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349 } else { |
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350 x = parent.xPos; // align on left edge |
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351 if (x+w > this.w) x += parent.width - w; // align on right edge |
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352 y = parent.yPos + parent.height; // place below |
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353 if (y+h > this.h) y = parent.yPos - h; // place above |
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354 } |
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355 widget.setPosition (x, y); |
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356 } |
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357 popups = popupsMem[0..popups.length+1]; |
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358 requestRedraw; |
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359 } |
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360 void removePopup (IChildWidget parnt) { |
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361 foreach_reverse (i,popup; popups) { |
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362 if (popup.parent is parnt) |
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363 popups = popups[0..i]; |
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364 } |
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365 requestRedraw; |
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366 } |
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367 |
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368 void requestRedraw () { |
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369 imde.mainSchedule.request(imde.SCHEDULE.DRAW); |
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370 } |
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371 |
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372 void addClickCallback (bool delegate(wdabs, wdabs, ubyte, bool) dg) { |
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373 clickCallbacks[dg.ptr] = dg; |
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374 } |
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375 void addMotionCallback (void delegate(wdabs, wdabs) dg) { |
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376 motionCallbacks[dg.ptr] = dg; |
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377 } |
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378 void removeCallbacks (void* frame) { |
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379 clickCallbacks.removeKey(frame); |
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380 motionCallbacks.removeKey(frame); |
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381 } |
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382 //END IWidgetManager methods |
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383 |
129
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384 debug void logWidgetSize (Content) { |
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385 logger.trace ("Current size: {,4},{,4}; minimal: {,4},{,4} - WidgetManager", w,h, mw,mh); |
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386 child.logWidgetSize; |
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387 } |
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388 |
110
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389 protected: |
80
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390 /** Second stage of loading the widgets. |
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391 * |
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392 * loadDesign handles the data; this method needs to: |
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393 * --- |
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394 * // 1. Create the root widget: |
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395 * child = makeWidget ("root"); |
111
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396 * child.setup (0, 3); |
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397 * // 2. Set the size: |
80
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398 * child.setWidth (child.minWidth, 1); |
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399 * child.setHeight (child.minHeight, 1); |
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400 * // 3. Set the position (necessary part of initialization): |
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401 * child.setPosition (0,0); |
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402 * --- |
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403 */ |
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404 void createRootWidget(); |
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405 |
99
5de5810e3516
Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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406 /** Called before saving (usually when the GUI is about to be destroyed, although not |
108
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Added capability for border-less pop-up widgets. Simple pop-up menu.
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407 * necessarily). */ |
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408 void preSave (); |
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409 |
110
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410 public: |
121
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411 //BEGIN makeWidget metacode |
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412 private static { |
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413 /// Widget types. Items match widget names without the "Widget" suffix. |
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414 enum WIDGET_TYPE : int { |
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415 FUNCTION = 0x2000, // Function called instead of widget created (no "Widget" appended to fct name) |
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416 TAKES_CONTENT = 0x4000, // Flag indicates widget's this should be passed an IContent reference. |
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417 SAFE_RECURSION = 0x8000, // Safe to instantiate recursively without infinite looping. |
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418 |
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419 // Use widget names rather than usual capitals convention |
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420 Unnamed = 0x0, // Only for use by widgets not created with createWidget |
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421 |
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422 // blank: 0x1 |
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423 FixedBlank = 0x1, |
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424 SizableBlank = 0x2, |
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425 Debug = 0xF, |
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426 |
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427 // popup widgets: 0x10 |
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428 PopupMenu = TAKES_CONTENT | 0x11, |
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429 SubMenu = TAKES_CONTENT | 0x12, |
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430 |
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431 // labels: 0x20 |
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432 ContentLabel = TAKES_CONTENT | 0x20, |
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433 TextLabel = 0x21, |
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434 |
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435 // content functions: 0x30 |
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436 editContent = FUNCTION | TAKES_CONTENT | SAFE_RECURSION | 0x30, |
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437 addContent = FUNCTION | 0x31, |
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438 flatMenuContent = FUNCTION | TAKES_CONTENT | SAFE_RECURSION | 0x32, |
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439 subMenuContent = FUNCTION | TAKES_CONTENT | 0x33, |
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440 |
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441 // content widgets: 0x40 |
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442 DisplayContent = TAKES_CONTENT | 0x40, |
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443 BoolContent = TAKES_CONTENT | 0x41, |
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444 AStringContent = TAKES_CONTENT | 0x42, |
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445 ButtonContent = TAKES_CONTENT | 0x43, |
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446 MenuButtonContent = TAKES_CONTENT | 0x44, |
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447 |
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448 GridLayout = TAKES_CONTENT | 0x100, |
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449 ContentList = TAKES_CONTENT | SAFE_RECURSION | 0x110, |
108
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450 |
123
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451 FloatingArea = TAKES_CONTENT | 0x200, |
125
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Added a simple switch/tab widget (depends on existing EnumContent).
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452 Switch = TAKES_CONTENT | 0x210, |
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453 } |
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454 |
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455 // Only used for binarySearch algorithm generation; must be ordered by numerical values. |
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456 const char[][] WIDGETS = [ |
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457 "FixedBlank", |
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458 "SizableBlank", |
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459 "Debug", |
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460 "TextLabel", |
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461 "addContent", |
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462 "PopupMenu", |
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463 "SubMenu", |
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464 "ContentLabel", |
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465 "DisplayContent", |
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466 "BoolContent", |
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467 "AStringContent", |
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468 "ButtonContent", |
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469 "MenuButtonContent", |
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470 "GridLayout", |
123
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minSizeChange() allows run-time changes to widgets' minimal size (except for shrinking in a GridLayoutWidget).
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471 "FloatingArea", |
125
3e648bc53bde
Added a simple switch/tab widget (depends on existing EnumContent).
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472 "Switch", |
121
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473 "subMenuContent", |
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474 "ContentList", |
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475 "editContent", |
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476 "flatMenuContent"]; |
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477 |
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478 /* Generates a binary search algorithm for makeWidget. */ |
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479 char[] binarySearch (char[] var, char[][] consts) { |
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480 if (consts.length > 3) { |
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481 return `if (`~var~` <= WIDGET_TYPE.`~consts[$/2 - 1]~`) {` ~ |
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482 binarySearch (var, consts[0 .. $/2]) ~ |
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483 `} else {` ~ |
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484 binarySearch (var, consts[$/2 .. $]) ~ |
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485 `}`; |
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486 } else { |
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487 char[] ret; |
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488 foreach (c; consts) { |
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489 ret ~= `if (` ~ var ~ ` == WIDGET_TYPE.` ~ c ~ `) { |
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490 debug (mdeWidgets) logger.trace ("Creating new `~c~`."); |
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491 if (!(WIDGET_TYPE.`~c~` & WIDGET_TYPE.SAFE_RECURSION)) |
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492 parent.recursionCheck (id); |
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493 static if (WIDGET_TYPE.`~c~` & WIDGET_TYPE.FUNCTION) |
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494 return `~c~` (this, parent, id, data, content); |
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495 else static if (WIDGET_TYPE.`~c~` & WIDGET_TYPE.TAKES_CONTENT) |
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496 return new `~c~`Widget (this, parent, id, data, content); |
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497 else |
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498 return new `~c~`Widget (this, parent, id, data); |
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499 } else `; |
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500 } |
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501 ret = ret[0..$-6]; // remove last else |
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502 return ret; |
108
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Added capability for border-less pop-up widgets. Simple pop-up menu.
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503 } |
121
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504 } |
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505 |
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506 debug { // check items in WIDGETS are listed in order |
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507 char[] WIDGETS_check () { |
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508 char[] ret; |
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509 for (int i = WIDGETS.length-2; i > 0; --i) { |
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510 ret ~= "WIDGET_TYPE."~WIDGETS[i] ~" >= WIDGET_TYPE."~ WIDGETS[i+1]; |
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511 if (i>1) ret ~= " || "; |
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512 } |
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513 return ret; |
108
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514 } |
121
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515 mixin ("static if ("~WIDGETS_check~") |
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516 static assert (false, \"WIDGETS is not in order!\");"); |
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517 } |
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518 } |
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519 //END makeWidget metacode |
108
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520 |
99
5de5810e3516
Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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521 protected: |
121
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522 // Dataset/design data: |
99
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523 final char[] fileName; |
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524 char[] defaultDesign; // The design specified in the file header. |
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525 char[] rendName; // Name of renderer; for saving and creating renderers |
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526 |
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527 // Loaded data, indexed by design name. May not be loaded for all gui designs: |
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528 scope WidgetDataSet[char[]] data; |
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529 private bool allLoaded = false; // applies to data |
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530 WidgetDataSet curData; // Current data |
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531 WidgetDataChanges changes; // Changes for the current design. |
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532 scope mt.DataSet changesDS; // changes and sections from user file (used for saving) |
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533 bool loadUserFile = true; // still need to load user file for saving? |
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534 |
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535 IRenderer rend; |
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536 |
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537 // Widgets: |
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538 wdim w,h; // current widget size; should be at least (mw,mh) even if not displayable |
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539 wdim mw,mh; // minimal area required by widgets |
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540 scope IChildWidget child; // The primary widget. |
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541 uint setupN; // n to pass to IChildWidget.setup |
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542 |
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543 struct ActivePopup { |
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544 IChildWidget widget; |
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545 IChildWidget parent; |
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546 wdabs x,y; |
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547 wdsize w,h; |
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548 } |
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549 ActivePopup[] popups; // Pop-up [menus] to draw. Last element is top popup. |
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550 ActivePopup[] popupsMem; // allocated memory for popups |
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551 // callbacks indexed by their frame pointers. Must support removal of elements in foreach: |
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552 SortedMap!(void*,bool delegate(wdabs cx, wdabs cy, ubyte b, bool state)) clickCallbacks; |
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553 SortedMap!(void*,void delegate(wdabs cx, wdabs cy)) motionCallbacks; |
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554 IChildWidget keyFocus; // widget receiving keyboard input when non-null |
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555 IChildWidget highlighted; // NOTE: in some ways should be same as keyFocus |
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556 |
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557 Mutex mutex; // lock on methods for use outside the package. |
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558 } |