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annotate mde/gui/gui.d @ 30:467c74d4804d

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Major changes to the scheduler, previously only used by the main loop. Revamped Scheduler. Functions can be removed, have multiple schedules, have their scheduling changed, etc. Scheduler has a unittest. Checked all pass. Main loop scheduler moved to mde. Draw-on-demand currently disabled, simplifying this. Made mtunitest.d remove the temporary file it uses afterwards. committer: Diggory Hardy <diggory.hardy@gmail.com>
author Diggory Hardy <diggory.hardy@gmail.com>
date Mon, 28 Apr 2008 10:59:47 +0100
parents f985c28c0ec9
children baa87e68d7dc
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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 /// Base GUI module.
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17 module mde.gui.gui;
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18
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19 import mde.gui.IWindow;
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20 import mde.gui.Widget;
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21 import mde.gui.exception;
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22
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23 import mt = mde.mergetag.DataSet;
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24 import mt = mde.mergetag.exception;
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25 import mde.mergetag.Reader;
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26
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27 import mde.resource.paths;
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28 import mde.scheduler.InitFunctions;
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29
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30 import tango.scrapple.text.convert.parseTo : parseTo;
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31 import tango.scrapple.text.convert.parseFrom : parseFrom;
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33 import tango.util.log.Log : Log, Logger;
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35 private Logger logger;
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36 static this () {
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37 logger = Log.getLogger ("mde.gui.gui");
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39 init.addFunc (&loadGUI, "loadGUI");
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40 }
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42 GUI gui; // Currently just one instance; handle differently later.
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43 // Wrap gui.load, since init doesn't handle delegates
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44 // (do it this way since GUI handling will eventually be changed)
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45 void loadGUI () {
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46 gui.load();
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47 }
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48
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49 /** A GUI handles a bunch of windows, all to be drawn to the same device. */
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50 struct GUI {
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51 /** Load all windows from the file gui. */
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52 void load() {
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53 static const fileName = "gui";
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54 if (!confDir.exists (fileName)) {
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55 logger.error ("Unable to load GUI: no config file!");
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56 return; // not a fatal error (so long as the game can run without a GUI!)
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57 }
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58
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59 IReader reader;
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60 try {
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61 reader = confDir.makeMTReader (fileName, PRIORITY.HIGH_ONLY);
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62 reader.dataSecCreator = delegate mt.IDataSection(mt.ID) {
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63 return new Window;
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64 };
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65 reader.read;
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66 } catch (mt.MTException e) {
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67 logger.error ("Loading GUI aborted:");
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68 logger.error (e.msg);
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69
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70 return;
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71 }
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73 // get list
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74 windows.length = reader.dataset.sec.length; // pre-allocate
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75 windows.length = 0;
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76 foreach (sec; reader.dataset.sec) {
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77 Window w = cast(Window) sec;
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78 debug if (w is null) {
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79 logger.error (__FILE__ ~ "(GUI.load): code error (w is null)");
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80 continue;
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81 }
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82 try {
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83 //logger.trace ("1");
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84 int x;
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85 w.finalise();
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86 x = 6;
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87 windows ~= w; // only add if load successful
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88 } catch (WindowLoadException e) {
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89 logger.error ("Window failed to load: " ~ e.msg);
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90 }
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91 }
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92 }
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93
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94 /** Draw each window.
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95 *
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96 * Currently no concept of how to draw overlapping windows, or how to not bother drawing windows
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97 * which don't need redrawing. */
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98 void draw() {
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99 foreach (w; windows)
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100 w.draw();
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101 }
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102
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103 private:
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104 Window[] windows;
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105 }
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106
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107 package: // Nothing else here is for external use.
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108
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109 /** GUI Window class
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110 *
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111 * A window class instance does two things: (1) specify a region of the screen upon which the window
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112 * and its associated widgets are drawn, and (2) load, save, and generally manage all its widgets.
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113 *
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114 * Let the window load a table of widget data, of type int[][widgetID]. Each widget will, when
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115 * created, be given its int[] of data, which this() must confirm is valid (or throw).
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116 */
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117 class Window : mt.IDataSection, IWindow
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118 {
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119 alias int widgetID; // Widget ID type. Each ID is unique under this window. Type is int since this is the widget data type.
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120
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121 /** Call after loading is finished to setup the window and confirm that it's valid.
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122 *
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123 * Throws: WindowLoadException. Do not use the instance in this case! */
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124 void finalise () {
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125 // Check data was loaded:
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126 if (widgetData is null) throw new WindowLoadException ("No widget data");
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127
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128 // Create the primary widget (and indirectly all sub-widgets), throwing on error:
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129 widget = getWidget (0); // primary widget always has ID 0.
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130
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131 widgetData = null; // data is no longer needed: allow GC to collect (cannot safely delete)
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132
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133 widget.getCurrentSize (w,h);// Find the initial size
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134 w += BORDER_WIDTH * 2; // Adjust for border
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135 h += BORDER_WIDTH * 2;
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136 }
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137
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138 /** Get/create a widget by ID.
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139 *
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140 * Should $(I only) be called internally and by sub-widgets! */
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141 IWidget getWidget (widgetID i)
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142 in {
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143 // widgetData is normally left to be garbage collected after widgets have been created:
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144 assert (widgetData !is null, "getWidget: widgetData is null");
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145 } body {
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146 // See if it's already been created:
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147 IWidget* p = i in widgets;
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148 if (p !is null) return *p; // yes
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149 else { // no
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150 int[]* d = i in widgetData;
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151 if (d is null) throw new WindowLoadException ("Widget not found");
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152
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153 // Throws WidgetDataException (a WindowLoadException) if bad data:
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154 IWidget w = createWidget (this, *d);
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155 widgets[i] = w;
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156 return w;
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157 }
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158 }
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159
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160 void requestRedraw () {
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161 //FIXME
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162 }
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163
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164 void draw () {
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165 //BEGIN Window border/back
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166 gl.setColor (0.0f, 0.0f, 0.5f);
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167 gl.drawBox (x,x+w, y,y+h);
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168 //END Window border/back
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169
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170 // Tell the widget to draw itself:
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171 widget.draw(x + BORDER_WIDTH, y + BORDER_WIDTH);
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172 }
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173
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174 //BEGIN Mergetag code
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175 void addTag (char[] tp, mt.ID id, char[] dt) {
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176 if (tp == "int[][int]") {
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177 if (id == "widgetData") {
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178 widgetData = cast(int[][widgetID]) parseTo!(int[][int]) (dt);
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179 }
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180 } else if (tp == "int") {
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181 if (id == "x") {
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182 x = parseTo!(int) (dt);
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183 } else if (id == "y") {
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184 y = parseTo!(int) (dt);
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185 }
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186 }
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187 }
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188 void writeAll (ItemDelg dlg) {
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189 }
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190 //END Mergetag code
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191
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192 private:
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193 int[][widgetID] widgetData; // Data for all widgets under this window (deleted after loading)
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194 IWidget[widgetID] widgets; // List of all widgets under this window (created on demand).
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195
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196 IWidget widget; // The primary widget in this window.
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197 int x,y; // Window position
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198 int w,h; // Window size (calculated from Widgets)
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199
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200 const BORDER_WIDTH = 8; // Temporary way to handle window decorations
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201
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202 }