Mercurial > projects > mde
annotate mde/gui/widget/Window.d @ 58:d43523ed4b62
Included a wdim typedef for all variables to do with window position or size instead of just using int.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Sat, 14 Jun 2008 17:15:06 +0100 |
parents | 03fa79a48c48 |
children | 891211f034f2 |
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 /** The Window class. Hopefully eventually this will become a widget to make things a bit more |
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17 * generic. */ |
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18 module mde.gui.widget.Window; |
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19 |
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20 import mde.gui.widget.Ifaces; |
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21 import mde.gui.widget.createWidget; |
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22 |
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23 import mde.gui.IGui; |
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24 import mde.gui.exception; |
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25 import mde.gui.renderer.createRenderer; |
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26 |
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27 import mt = mde.mergetag.DataSet; |
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28 import tango.scrapple.text.convert.parseTo : parseTo; |
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29 import tango.scrapple.text.convert.parseFrom : parseFrom; |
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30 |
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31 import tango.util.log.Log : Log, Logger; |
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32 |
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33 private Logger logger; |
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34 static this () { |
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35 logger = Log.getLogger ("mde.gui.widget.Window"); |
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36 } |
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37 |
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38 /** GUI Window class |
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39 * |
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40 * A window class instance does two things: (1) specify a region of the screen upon which the window |
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41 * and its associated widgets are drawn, and (2) load, save, and generally manage all its widgets. |
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42 * |
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43 * Let the window load a table of widget data, of type int[][widgetID]. Each widget will, when |
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44 * created, be given its int[] of data, which this() must confirm is valid (or throw). |
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45 */ |
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46 class Window : mt.IDataSection, IWindow |
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47 { |
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48 //BEGIN Methods for GUI |
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49 this (char[] id) { |
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50 name = id; |
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51 } |
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52 |
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53 /** Call after loading is finished to setup the window and confirm that it's valid. |
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54 * |
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55 * Throws: WindowLoadException (or possibly other exceptions). Do not use the instance if an |
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56 * exception occurs! */ |
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57 void finalise (IGui gui) |
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58 in { |
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59 assert (gui !is null, "Window.finalise ("~name~"): gui is null"); |
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60 } body { |
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61 // Check data was loaded: |
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62 if (widgetData is null) |
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63 throw new WindowLoadException ("No widget creation data"); |
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64 |
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65 // Save gui and create the renderer: |
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66 gui_ = gui; |
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67 rend = createRenderer (gui.rendererName); |
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68 |
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69 // Create the primary widget (and indirectly all sub-widgets), throwing on error: |
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70 // Note: GridLayoutWidget's this relies on rend.layoutSpacing. |
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71 widget = makeWidget (0); // primary widget always has ID 0. |
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72 widgetData = null; // data is no longer needed: allow GC to collect (cannot safely delete) |
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73 |
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74 // get border sizes: |
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75 border = rend.setSizable (isWSizable, isHSizable); // depends on widget |
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76 |
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77 // Note: this should return an empty array, but we shouldn't make a fuss if it's not empty: |
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78 if ((widget.adjust (mutableData)).length != 0) // adjust/set size, etc., depends on rend |
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79 logger.warn ("Local widget position data is invalid!"); |
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80 mutableData = null; // no longer needed |
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81 |
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82 widget.getCurrentSize (w,h); // and get this size |
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83 w += border.l + border.r; // Adjust for border |
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84 h += border.t + border.b; |
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85 |
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86 widgetX = x + border.l; // widget position |
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87 widgetY = y + border.t; // must be updated if the window is moved |
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88 widget.setPosition (widgetX, widgetY); |
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89 |
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90 // Calculate mw/mh and xw/yh (cached data): |
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91 widget.getMinimalSize (mw, mh); |
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92 mw += border.l + border.r; |
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93 mh += border.t + border.b; |
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94 |
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95 xw = x+w; |
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96 yh = y+h; |
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97 } |
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98 //BEGIN Mergetag code |
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99 void addTag (char[] tp, mt.ID id, char[] dt) { |
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100 // Priority is HIGH_LOW, so don't overwrite data which has already been loaded. |
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101 if (tp == INTAA) { |
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102 if (id == WDGD && widgetData == null) { |
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103 widgetData = cast(int[][widgetID]) parseTo!(int[][int]) (dt); |
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104 } |
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105 } else if (tp == INTA) { |
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106 if (id == MD && mutableData == null) { |
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107 mutableData = parseTo!(int[]) (dt); |
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108 } |
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109 } else if (tp == INT) { |
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110 if (id == X && x == -1) { |
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111 x = cast(wdim) parseTo!(int) (dt); |
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112 } else if (id == Y && y == -1) { |
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113 y = cast(wdim) parseTo!(int) (dt); |
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114 } |
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115 } |
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116 } |
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117 void writeAll (ItemDelg dlg) |
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118 in { |
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119 assert (widgetData is null, "Window.writeAll: widgetData !is null"); |
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120 } body { |
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121 /+ NOTE: currently editing is impossible... |
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122 if (edited) { // only save the widget creation data if it's been adjusted: |
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123 addCreationData (widget); // generate widget save data |
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124 dlg (INTAA, WDGD, parseFrom!(int[][int]) (widgetData)); |
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125 }+/ |
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126 // Save mutable data: |
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127 dlg (INTA, MD, parseFrom!(int[]) (widget.getMutableData)); |
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128 // Save the window position: |
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129 dlg (INT, X, parseFrom!(int) (x)); |
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130 dlg (INT, Y, parseFrom!(int) (y)); |
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131 } |
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132 private static const { |
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133 auto INTAA = "int[][int]"; |
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134 auto INTA = "int[]"; |
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135 auto INT = "int"; |
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136 auto WDGD = "widgetData"; |
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137 auto MD = "mutableData"; |
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138 auto X = "x"; |
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139 auto Y = "y"; |
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140 } |
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141 //END Mergetag code |
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142 //END Methods for GUI |
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143 |
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144 //BEGIN IWindow methods |
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145 /** Get/create a widget by ID. |
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146 * |
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147 * Should $(I only) be called internally and by sub-widgets! */ |
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148 IWidget makeWidget (widgetID i) |
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149 in { |
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150 // widgetData is normally left to be garbage collected after widgets have been created: |
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151 assert (widgetData !is null, "Window.makeWidget ("~name~"): widgetData is null"); |
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152 } body { |
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153 /* Each widget returned should be a unique object; if multiple widgets are requested with |
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154 * the same ID, a new widget is created each time. */ |
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155 |
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156 int[]* d = i in widgetData; |
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157 if (d is null) |
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158 throw new WindowLoadException ("Window.makeWidget ("~name~"): Widget not found"); |
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159 |
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160 // Throws WidgetDataException (a WindowLoadException) if bad data: |
39
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161 return createWidget (this, *d); |
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162 } |
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163 |
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164 /** Add this widget's data to that to be saved, returning it's widgetID. */ |
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165 widgetID addCreationData (IWidget widget) |
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166 { |
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167 widgetID i; |
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168 if (widgetData is null) |
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169 i = 0; |
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170 else |
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171 i = widgetData.keys[$-1] + 1; |
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172 |
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173 widgetData[i] = null; // Make sure the same ID doesn't get used by a recursive call |
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174 widgetData[i] = widget.getCreationData; |
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175 |
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176 return i; |
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177 } |
41
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178 |
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179 IGui gui () { |
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180 return gui_; |
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181 } |
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182 |
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183 void requestRedraw () { |
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184 gui_.requestRedraw; |
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185 } |
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186 |
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187 IRenderer renderer () |
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188 in { |
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189 assert (rend !is null, "Window.renderer: rend is null"); |
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190 } body { |
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191 return rend; |
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192 } |
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193 //END IWindow methods |
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194 |
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195 //BEGIN IWidget methods |
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196 //FIXME: how many of these methods are actually needed/used? |
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197 int[] adjust (int[]) { // simply not relevant (never used) |
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198 return []; |
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199 } |
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200 int[] getCreationData () { // simply not relevant (never used) |
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201 return []; |
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202 } |
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203 int[] getMutableData () { // simply not relevant (never used) |
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204 return []; |
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205 } |
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206 |
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207 bool isWSizable () { |
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208 return widget.isWSizable; |
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209 } |
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210 bool isHSizable () { |
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211 return widget.isHSizable; |
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212 } |
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213 |
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214 void getMinimalSize (out wdim wM, out wdim hM) { |
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215 // mw/mh are calculated by finalise(); |
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216 wM = mw; |
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217 hM = mh; |
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218 } |
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219 void getCurrentSize (out wdim cw, out wdim ch) { |
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220 cw = w; |
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221 ch = h; |
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222 } |
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223 |
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224 void setWidth (wdim nw, int dir) { |
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225 if (nw < mw) w = mw; // clamp |
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226 else w = nw; |
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227 xw = x + w; |
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228 widget.setWidth (w - border.l - border.r, dir); |
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229 } |
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230 void setHeight (wdim nh, int dir) { |
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231 if (nh < mh) h = mh; // clamp |
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232 else h = nh; |
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233 yh = y + h; |
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234 widget.setHeight (h - border.t - border.b, dir); |
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235 } |
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236 |
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237 void setPosition (wdim nx, wdim ny) { |
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238 x = nx; |
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239 y = ny; |
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240 |
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241 xw = x+w; |
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242 yh = y+h; |
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243 |
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244 widgetX = x + border.l; |
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245 widgetY = y + border.t; |
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246 |
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247 widget.setPosition (widgetX, widgetY); |
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248 |
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249 gui_.requestRedraw (); // necessary whenever the window is moved; setPosition is called after resizes and moves |
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250 } |
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251 |
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252 IWidget getWidget (wdim cx, wdim cy) { |
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253 if (cx < x || cx >= xw || cy < y || cy >= yh) // not over window |
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254 return null; |
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255 if (cx >= widgetX && cx < xw-border.r && cy >= widgetY && cy < yh-border.b) |
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256 // over the widget |
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257 return widget.getWidget (cx, cy); |
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258 else // over the window border |
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259 return this; |
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260 } |
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261 void clickEvent (wdabs cx, wdabs cy, ubyte b, bool state) { |
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262 if (b == 1 && state == true) { |
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263 resizeType = rend.getResizeType (cx-x, cy-y, w,h); |
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264 |
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265 if (resizeType != RESIZE_TYPE.NONE) { // Some type of resize |
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266 // Set x/yDrag (unfortunately these need to be different for each edge) |
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267 if (resizeType & RESIZE_TYPE.L) |
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268 xDrag = w + cx; |
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269 else if (resizeType & RESIZE_TYPE.R) |
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270 xDrag = w - cx; |
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271 |
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272 if (resizeType & RESIZE_TYPE.T) |
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273 yDrag = h + cy; |
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274 else if (resizeType & RESIZE_TYPE.B) |
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275 yDrag = h - cy; |
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276 |
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277 // Add the callbacks (they use resizeType which has already been set) |
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278 gui_.addClickCallback (&endCallback); |
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279 gui_.addMotionCallback (&resizeCallback); |
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280 } else { // window is being moved |
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281 xDrag = cx - x; |
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282 yDrag = cy - y; |
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283 |
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284 gui_.addClickCallback (&endCallback); |
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285 gui_.addMotionCallback (&moveCallback); |
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286 } |
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287 } |
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288 } |
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289 |
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290 void draw () { |
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291 // background |
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292 rend.drawWindow (x,y, w,h); |
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293 |
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294 // Tell the widget to draw itself: |
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295 widget.draw(); |
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296 } |
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297 //END IWidget methods |
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298 |
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299 private: |
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300 alias IRenderer.BorderDimensions BorderDimensions; |
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301 alias IRenderer.RESIZE_TYPE RESIZE_TYPE; |
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302 |
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303 //BEGIN Window moving and resizing |
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304 void moveCallback (wdabs cx, wdabs cy) { |
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305 setPosition (cx-xDrag, cy-yDrag); |
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306 } |
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307 void resizeCallback (wdabs cx, wdabs cy) { |
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308 debug scope(failure) |
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309 logger.trace ("resizeCallback: failure"); |
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310 |
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311 // This function is only called if some resize is going to happen. |
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312 // x,y are used as parameters to setPosition as well as being affected by it; somewhat |
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313 // pointless but fairly effective. |
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314 |
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315 if (resizeType & RESIZE_TYPE.L) { |
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316 wdim xSize = xDrag - cx; |
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317 if (xSize < mw) xSize = mw; // clamp |
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318 x += w - xSize; |
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319 setWidth (xSize, 1); |
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320 } |
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321 else if (resizeType & RESIZE_TYPE.R) { |
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322 setWidth (xDrag + cx, -1); |
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323 } |
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324 if (resizeType & RESIZE_TYPE.T) { |
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325 wdim ySize = yDrag - cy; |
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326 if (ySize < mh) ySize = mh; |
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327 y += h - ySize; |
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328 setHeight (ySize, 1); |
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329 } |
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330 else if (resizeType & RESIZE_TYPE.B) { |
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331 setHeight (yDrag + cy, -1); |
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332 } |
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333 |
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334 // Moves lower (x,y) coordinate if necessary and repositions any sub-widgets moved by the |
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335 // resizing: |
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336 setPosition (x, y); |
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337 } |
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338 bool endCallback (wdabs cx, wdabs cy, ubyte b, bool state) { |
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339 if (b == 1 && state == false) { |
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340 // The mouse shouldn't have moved since the motion callback |
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341 // was last called, so there's nothing else to do now. |
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342 gui_.removeCallbacks (cast(void*) this); |
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The renderer now controls which parts of the window border allow resizing.
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343 |
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344 return true; // we've handled the up-click |
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345 } |
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346 return false; // we haven't handled it |
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347 } |
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348 wdim xDrag, yDrag; // where a drag starts relative to x and y |
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349 IRenderer.RESIZE_TYPE resizeType; // Type of current resize |
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350 //END Window moving and resizing |
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351 |
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Implemented widget saving.
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352 // Load/save data: |
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353 public char[] name; // The window's name (id from config file) |
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354 //bool edited = false; // True if any widgets have been edited (excluding scaling) |
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355 |
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356 // Data used for saving and loading (null in between): |
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357 int[][widgetID] widgetData = null;// Data for all widgets under this window |
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358 int[] mutableData = null; // Widget's mutable data (adjusted sizes, etc.) |
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Work on the Gui: some of the framework for drag & drop. Also made Window an IWidget.
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359 |
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360 IGui gui_; // The gui managing this window |
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361 IRenderer rend; // The window's renderer |
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362 |
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Lots more work on the GUI. Also renamed lots of files.
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363 IWidget widget; // The primary widget in this window. |
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364 |
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365 wdim x = -1, y = -1; // Window position |
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366 wdsize w,h; // Window size (calculated from Widgets) |
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367 wdim xw, yh; // x+w, y+h (frequent use by clickEvent) |
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368 wdim widgetX, widgetY; // Widget position (= window position plus BORDER_WIDTH) |
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369 wdim mw = -1, mh = -1; // minimal size (negative means requires calculation) |
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370 |
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371 BorderDimensions border; // Total border size (move plus resize) |
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372 } |