Mercurial > projects > mde
annotate mde/gui/WidgetManager.d @ 114:b16a534f5302
Changes for tango r4201. Added override keyword in a lot of places.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Fri, 19 Dec 2008 15:15:06 +0000 |
parents | 9824bee909fd |
children | 1b1e2297e2fc |
rev | line source |
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1 /* LICENSE BLOCK |
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2 Part of mde: a Modular D game-oriented Engine |
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3 Copyright © 2007-2008 Diggory Hardy |
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4 |
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5 This program is free software: you can redistribute it and/or modify it under the terms |
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6 of the GNU General Public License as published by the Free Software Foundation, either |
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7 version 2 of the License, or (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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11 See the GNU General Public License for more details. |
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12 |
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13 You should have received a copy of the GNU General Public License |
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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15 |
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16 /************************************************************************************************* |
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17 * The gui manager class. |
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18 * |
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19 * This is the module to use externally to create a graphical user interface (likely also with |
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20 * content modules). |
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21 *************************************************************************************************/ |
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22 module mde.gui.WidgetManager; |
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23 |
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24 import mde.gui.WidgetDataSet; |
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25 import mde.gui.widget.Ifaces; |
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26 import mde.gui.renderer.createRenderer; |
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27 |
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28 import imde = mde.imde; |
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29 import mde.input.Input; |
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30 import mde.scheduler.Scheduler; |
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31 import mde.setup.Screen; |
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32 import Items = mde.content.Items; // loadTranslation |
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33 import mde.lookup.Options; // miscOpts.L10n callback |
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34 |
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35 import tango.core.sync.Mutex; |
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36 import tango.util.log.Log : Log, Logger; |
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37 import tango.util.container.CircularList; // pop-up draw callbacks |
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38 import tango.util.container.SortedMap; |
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39 |
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40 private Logger logger; |
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41 static this () { |
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42 logger = Log.getLogger ("mde.gui.WidgetManager"); |
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43 } |
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44 |
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45 /************************************************************************************************* |
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46 * The widget manager. |
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47 * |
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48 * This provides a layer on top of WidgetLoader, handling input and rendering. Other functionality |
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49 * is contained in the super class, to simplify supporting new input/graphics libraries. |
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50 * |
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51 * Currently mouse coordinates are passed to widgets untranslated. It may make sense to translate |
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52 * them and possibly drop events for some uses, such as if the gui is drawn to a texture. |
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53 * |
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54 * Aside from the IWidgetManager methods, this class should be thread-safe. |
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55 *************************************************************************************************/ |
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56 class WidgetManager : WidgetLoader, Screen.IDrawable { |
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57 /** Construct a new widget manager. |
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58 * |
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59 * params: |
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60 * fileName = Name of file specifying the gui, excluding path and extension. |
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61 */ |
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62 this (char[] file) { |
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63 super(file); |
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64 |
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65 Screen.addDrawable (this); |
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66 clickCallbacks = new typeof(clickCallbacks); |
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67 motionCallbacks = new typeof(motionCallbacks); |
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68 } |
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69 |
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70 // this() runs during static this(), when imde.input doesn't exist. init() runs later. |
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71 void init () { |
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72 // Doesn't need a lock - cannot conflict with other class functions. |
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73 // Events we want to know about: |
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74 imde.input.addMouseClickCallback(&clickEvent); |
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75 imde.input.addMouseMotionCallback(&motionEvent); |
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76 |
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77 Items.loadTranslation (); |
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78 miscOpts.L10n.addCallback (&reloadStrings); |
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79 } |
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80 |
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81 |
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82 /** Draw the gui. */ |
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83 void draw() { |
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84 synchronized(mutex) { |
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85 if (child) |
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86 child.draw; |
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87 foreach (popup; popups.iterator.reverse) |
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88 popup.widget.draw(); |
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89 } |
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90 } |
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91 |
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92 |
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93 /** For mouse click events. |
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94 * |
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95 * Sends the event on to the relevant windows and all click callbacks. */ |
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96 void clickEvent (ushort cx, ushort cy, ubyte b, bool state) { |
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97 debug scope (failure) |
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98 logger.warn ("clickEvent: failed!"); |
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99 mutex.lock; |
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100 scope(exit) mutex.unlock; |
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101 if (child is null) return; |
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102 |
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103 // 1. Callbacks have the highest priority recieving events (e.g. a button release) |
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104 foreach (dg; clickCallbacks) |
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105 if (dg (cast(wdabs)cx, cast(wdabs)cy, b, state)) return; |
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106 |
108
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107 // 2. Then pop-ups |
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108 static IChildWidget[] removedPopupParents; |
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109 uint removedPopups = 0; |
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110 IChildWidget widg; // widget clicked on |
108
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111 { |
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112 auto i = popups.iterator; |
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113 foreach (popup; i) with (popup) { |
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114 if (cx < x || cx >= x + w || |
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115 cy < y || cy >= y + h) { |
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116 i.remove; |
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117 requestRedraw; |
113
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118 if (removedPopupParents.length <= removedPopups) |
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119 removedPopupParents.length = removedPopupParents.length * 2 + 4; |
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120 removedPopupParents[removedPopups++] = parent; |
108
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121 } else { |
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122 widg = widget.getWidget (cast(wdabs)cx,cast(wdabs)cy); |
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123 break; |
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124 } |
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125 } |
91
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Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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126 } |
108
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127 |
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128 // 3. Then the main widget tree |
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129 debug assert (cx < child.width && cy < child.height, "WidgetManager: child doesn't cover whole area (code error)"); |
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130 if (widg is null) |
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131 widg = child.getWidget (cast(wdabs)cx,cast(wdabs)cy); |
99
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Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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132 if (keyFocus && keyFocus !is widg) { |
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133 keyFocus.keyFocusLost; |
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134 keyFocus = null; |
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135 imde.input.setLetterCallback (null); |
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136 } |
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137 if (widg !is null) { |
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138 if (widg.clickEvent (cast(wdabs)cx,cast(wdabs)cy,b,state) & 1) { |
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139 keyFocus = widg; |
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140 imde.input.setLetterCallback (&widg.keyEvent); |
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141 } |
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142 } |
113
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143 |
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144 // Tell parents their popups closed (needs to be after clickEvent for PopupMenuWidget) |
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145 while (removedPopups) |
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146 removedPopupParents[--removedPopups].popupRemoved; |
32
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147 } |
34
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148 |
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149 /** For mouse motion events. |
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150 * |
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151 * Sends the event on to all motion callbacks. */ |
113
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152 void motionEvent (ushort scx, ushort scy) { |
43
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Column/row resizing implemented for GridLayoutWidget (finally)!
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153 debug scope (failure) |
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154 logger.warn ("motionEvent: failed!"); |
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155 mutex.lock; |
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156 scope(exit) mutex.unlock; |
113
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157 wdabs cx = cast(wdabs) scx, cy = cast(wdabs) scy; |
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158 foreach (dg; motionCallbacks) |
113
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159 dg (cx, cy); |
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160 |
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161 IChildWidget ohighlighted = highlighted; |
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162 foreach (popup; popups) with (popup) { |
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163 if (cx >= x && cx < x+w && cy >= y && cy < y+h) { |
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164 highlighted = widget.getWidget (cx,cy); |
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165 goto foundPopup; |
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166 } |
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167 } |
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168 highlighted = null; // not over a popup |
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169 foundPopup: |
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170 if (ohighlighted != highlighted) { |
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171 if (ohighlighted) |
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172 ohighlighted.highlight (false); |
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173 if (highlighted) |
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174 highlighted.highlight (true); |
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175 requestRedraw; |
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176 } |
34
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Work on the Gui: some of the framework for drag & drop. Also made Window an IWidget.
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177 } |
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178 |
32
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179 |
86
79d816b3e2d2
New InitStage system, Screen & Screen.Drawable, separate testing and guiDemo binaries.
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180 void sizeEvent (int nw, int nh) { // IDrawable function |
75
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181 mutex.lock; |
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182 scope(exit) mutex.unlock; |
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183 |
85
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184 w = cast(wdim) nw; |
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185 h = cast(wdim) nh; |
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186 |
85
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187 if (w < mw || h < mh) |
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188 logger.warn ("Minimal dimensions ({},{}) not met: ({},{}), but I cannot resize myself!",mw,mh,w,h); |
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189 |
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190 if (!child) return; // if not created yet. |
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191 child.setWidth (w, -1); |
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192 child.setHeight (h, -1); |
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193 child.setPosition (0,0); |
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194 } |
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195 |
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196 //BEGIN IWidgetManager methods |
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197 // These methods are only intended for use within the gui package. They are not necessarily |
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198 // thread-safe. |
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199 IRenderer renderer () { |
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200 assert (rend !is null, "WidgetManager.renderer: rend is null"); |
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201 return rend; |
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202 } |
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203 |
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204 /** Place a pop-up widget (widg) above or below parent. |
111
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Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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205 * |
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206 * WidgetManager sets its position, draws it, passes it click events and removes it; other |
113
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207 * functionality should be handled by the widget's parent. |
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208 * |
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209 * Popups currently should not change their size while active. */ |
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210 void addPopup (IChildWidget parent, IChildWidget widg) { |
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211 debug assert (parent && widg, "addPopup: null widget"); |
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212 ActivePopup popup; |
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213 popup.parent = parent; |
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214 with (popup) { |
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215 widget = widg; |
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216 w = widg.width; |
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217 h = widg.height; |
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218 x = parent.xPos; // align on left edge |
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219 if (x+w > this.w) x += parent.width - w; // align on right edge |
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220 y = parent.yPos + parent.height; // place below |
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221 if (y+h > this.h) y = parent.yPos - h; // place above |
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222 widget.setPosition (x, y); |
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223 } |
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224 popups.prepend (popup); |
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225 requestRedraw; |
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226 } |
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227 /+ Not required but possibly useful later. Not optimal. |
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228 void removePopup (IChildWidget widg) { |
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229 auto i = popups.iterator; |
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230 foreach (popup; i) { |
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231 if (popup.widget is widg) |
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232 i.remove; |
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233 } |
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234 requestRedraw; |
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235 }+/ |
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236 |
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237 void requestRedraw () { |
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238 imde.mainSchedule.request(imde.SCHEDULE.DRAW); |
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239 } |
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240 |
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241 void addClickCallback (bool delegate(wdabs, wdabs, ubyte, bool) dg) { |
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242 clickCallbacks[dg.ptr] = dg; |
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243 } |
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244 void addMotionCallback (void delegate(wdabs, wdabs) dg) { |
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245 motionCallbacks[dg.ptr] = dg; |
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246 } |
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247 void removeCallbacks (void* frame) { |
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248 clickCallbacks.removeKey(frame); |
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249 motionCallbacks.removeKey(frame); |
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250 } |
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251 //END IWidgetManager methods |
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252 |
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253 protected: |
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254 /* Second stage of widget loading. |
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255 * Note: sizeEvent should be called with window size before this. */ |
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256 final override void createRootWidget () { |
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257 // The renderer needs to be created on the first load, but not after this. |
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258 if (rend is null) |
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259 rend = createRenderer (rendName); |
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260 popups = new CircularList!(ActivePopup); |
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261 |
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262 child = makeWidget ("root"); |
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Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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263 child.setup (0, 3); |
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264 |
85
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265 mw = child.minWidth; |
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266 mh = child.minHeight; |
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267 |
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268 if (w < mw || h < mh) |
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269 logger.warn ("Minimal dimensions ({},{}) not met: ({},{}), but I cannot resize myself!",mw,mh,w,h); |
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270 |
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271 child.setWidth (w, -1); |
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272 child.setHeight (h, -1); |
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273 child.setPosition (0,0); |
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274 } |
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275 |
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276 final override void preSave () { |
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277 if (keyFocus) { |
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278 keyFocus.keyFocusLost; |
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279 keyFocus = null; |
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280 imde.input.setLetterCallback (null); |
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281 } |
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282 } |
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283 |
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284 private: |
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285 struct ActivePopup { |
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286 IChildWidget widget; |
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287 IChildWidget parent; |
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288 wdabs x,y; |
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289 wdsize w,h; |
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290 } |
99
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291 IRenderer rend; |
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292 CircularList!(ActivePopup) popups;// Pop-up [menus] to draw. First element is top popup. |
113
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293 // callbacks indexed by their frame pointers. Must support removal of elements in foreach: |
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294 SortedMap!(void*,bool delegate(wdabs cx, wdabs cy, ubyte b, bool state)) clickCallbacks; |
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295 SortedMap!(void*,void delegate(wdabs cx, wdabs cy)) motionCallbacks; |
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296 IChildWidget keyFocus; // widget receiving keyboard input when non-null |
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297 IChildWidget highlighted; // NOTE: in some ways should be same as keyFocus |
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298 } |
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299 |
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300 |
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301 import mde.gui.exception; |
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302 import mde.content.Content; // AContent passed to a callback |
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303 import mde.gui.widget.createWidget; |
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304 |
81
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Moved file IO code from mde/mergetag to mde/file[/mergetag] and changed how some errors are caught.
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305 import mde.file.mergetag.Reader; |
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Moved file IO code from mde/mergetag to mde/file[/mergetag] and changed how some errors are caught.
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306 import mde.file.mergetag.Writer; |
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307 import mde.setup.paths; |
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308 |
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309 /************************************************************************************************* |
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310 * Contains the code for loading and saving an entire gui (more than one may exist), but not the |
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311 * code for drawing it or handling user input. |
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312 * |
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313 * This abstract class exists solely for separating out some of the functionality. |
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314 *************************************************************************************************/ |
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315 abstract scope class WidgetLoader : IWidgetManager |
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316 { |
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317 /** Construct a new widget loader. |
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318 * |
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319 * params: |
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320 * fileName = Name of file specifying the gui, excluding path and extension. |
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321 */ |
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322 protected this (char[] file) { |
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323 mutex = new Mutex; // Used on functions intended to be called from outside the gui package. |
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324 fileName = file; |
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325 } |
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326 |
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327 /* Load the widgets' data from the file specified to the CTOR. |
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328 * |
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329 * params: |
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330 * allDesigns = Load all sections |
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331 */ |
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332 private void loadData (bool allDesigns = false) { |
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333 if (allLoaded || (defaultDesign !is null && allDesigns == false)) |
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334 return; // test if already loaded |
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335 |
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336 // Set up a reader |
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337 scope IReader reader; |
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338 try { |
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339 reader = confDir.makeMTReader (fileName, PRIORITY.HIGH_LOW, null, true); |
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340 |
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341 // Read from the HEADER: |
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342 // Get the renderer |
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343 char[]* p = "Renderer" in reader.dataset.header._charA; |
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344 if (p is null || *p is null) { |
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345 logger.warn ("No renderer specified: using \"Simple\""); |
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346 rendName = "Simple"; |
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347 } |
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348 else |
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349 rendName = *p; |
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350 |
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351 // Get which section to use |
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352 p = "Design" in reader.dataset.header._charA; |
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353 if (p is null || *p is null) { |
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354 logger.warn ("No gui design specified: trying \"Default\""); |
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355 defaultDesign = "Default"; |
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356 } |
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357 else |
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358 defaultDesign = *p; |
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359 |
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360 // Read the body: |
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361 // Load the chosen design |
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362 reader.dataSecCreator = delegate mt.IDataSection(mt.ID id) { |
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363 WidgetDataSet* p = id in data; |
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364 if (p is null) { |
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365 data[id] = new WidgetDataSet; |
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366 return *(id in data); |
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367 } |
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368 return *p; |
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369 }; |
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370 |
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371 if (allDesigns) { |
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372 reader.read; |
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373 allLoaded = true; |
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374 } else |
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375 reader.read([defaultDesign]); |
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376 } catch (NoFileException) { |
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377 logger.error ("Unable to load GUI: no config file!"); |
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378 // just return: not a fatal error (so long as the game can run without a GUI!) |
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379 } catch (Exception e) { |
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380 logger.error ("Unable to load GUI: errors parsing config file ("~confDir.getFileName(fileName,PRIORITY.HIGH_LOW)~"):"); |
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381 logger.error (e.msg); |
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382 throw new GuiException ("Failure parsing config file"); |
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383 } |
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384 } |
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385 |
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386 /** Load the gui from some design. |
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387 * |
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388 * If a design was previously loaded, its changes are saved first. |
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389 * |
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390 * Params: |
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391 * name = Design to load. If null, the default will be loaded. |
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392 */ |
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393 void loadDesign (char[] name = null) { |
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394 if (changes !is null) // A design was previously loaded |
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395 save; // own lock |
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396 |
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397 mutex.lock; |
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398 scope(exit) mutex.unlock; |
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399 |
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400 // Load data (loadData tests if it's already loaded first): |
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401 if (name is null) { |
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402 loadData (false); |
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403 name = defaultDesign; |
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404 } else |
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405 loadData (true); |
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406 |
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407 |
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408 // Get data: |
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409 auto p = name in data; |
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410 while (p is null) { |
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411 if (name == defaultDesign) |
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412 throw new GuiException ("Unable to load [specified or] default design"); |
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413 name = defaultDesign; // try again with the default |
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414 p = name in data; |
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415 } |
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416 curData = *p; |
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417 |
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418 // Get/create a changes section: |
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419 if (changesDS is null) |
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420 changesDS = new mt.DataSet; |
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421 |
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422 mt.IDataSection* q = name in changesDS.sec; |
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423 if (!q || ((changes = cast(WidgetDataChanges) *q) is null)) { |
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424 changes = new WidgetDataChanges (curData); |
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425 changesDS.sec[name] = changes; |
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426 } |
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427 |
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428 // Create the widgets: |
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429 createRootWidget; |
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430 } |
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431 |
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432 /** Save changes, if any exist. |
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433 * |
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434 * Is run when the manager is destroyed, but could be run at other times too. */ |
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435 void save () { |
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436 preSave; |
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437 |
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438 mutex.lock; |
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439 scope(exit) mutex.unlock; |
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440 |
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441 // Make all widgets save any changed data; return if no changes: |
93
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Widgets now save dimensions without preventing structural changes in the base config file from applying.
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442 if (!child.saveChanges) |
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443 return; |
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444 |
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445 if (loadUserFile) { // merge entries from user file into current changes |
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446 try { |
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447 scope IReader reader = confDir.makeMTReader ( |
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448 fileName, PRIORITY.HIGH_ONLY, changesDS, true); |
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449 |
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450 // Create if necessary, only corresponding to existing designs read: |
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451 reader.dataSecCreator = delegate mt.IDataSection(mt.ID id) { |
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452 WidgetDataSet* p = id in data; |
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453 if (p is null) |
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454 throw new Exception ("File has changed since it was loaded!"); |
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455 return new WidgetDataChanges (*p); |
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456 }; |
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457 |
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458 reader.read; |
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459 } catch (NoFileException) { |
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460 // No user file exists; not an error. |
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461 } catch (Exception e) { |
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462 logger.error ("Error reading "~confDir.getFileName(fileName,PRIORITY.HIGH_ONLY)~" prior to saving:"); |
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463 logger.error (e.msg); |
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464 logger.error ("Overwriting the file."); |
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465 // Continue... |
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466 } |
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467 loadUserFile = false; // don't need to do it again |
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468 } |
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469 |
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470 try { // Save |
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471 IWriter writer; |
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472 writer = confDir.makeMTWriter (fileName, changesDS); |
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473 writer.write; |
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474 } catch (Exception e) { |
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475 logger.error ("Saving to "~confDir.getFileName(fileName,PRIORITY.HIGH_ONLY)~" failed:"); |
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476 logger.error (e.msg); |
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477 // No point in throwing since it doesn't affect anything else. |
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478 } |
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|
479 } |
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|
480 |
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481 /** Get the names of all designs available. */ |
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482 char[][] designs() { |
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483 synchronized(mutex) { |
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484 loadData (true); |
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485 return data.keys; |
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486 } |
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487 } |
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488 |
110
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489 /** Called when translation strings have been reloaded. */ |
112
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EnumContent; log level can be selected from a popup list.
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490 void reloadStrings (AContent) { |
110
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491 Items.loadTranslation; |
111
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492 child.setup (++setupN, 2); |
112
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493 child.setWidth (w, -1); |
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494 child.setHeight (h, -1); |
111
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495 child.setPosition (0,0); |
110
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496 requestRedraw; |
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497 } |
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498 |
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499 protected: |
80
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500 /** Second stage of loading the widgets. |
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501 * |
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502 * loadDesign handles the data; this method needs to: |
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503 * --- |
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504 * // 1. Create the root widget: |
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505 * child = makeWidget ("root"); |
111
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506 * child.setup (0, 3); |
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507 * // 2. Set the size: |
80
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508 * child.setWidth (child.minWidth, 1); |
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509 * child.setHeight (child.minHeight, 1); |
111
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510 * // 3. Set the position (necessary part of initialization): |
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511 * child.setPosition (0,0); |
80
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512 * --- |
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|
513 */ |
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514 void createRootWidget(); |
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515 |
99
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Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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516 /** Called before saving (usually when the GUI is about to be destroyed, although not |
108
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517 * necessarily). */ |
110
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518 void preSave (); |
99
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519 |
110
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520 public: |
108
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521 //BEGIN IWidgetManager methods |
114
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Changes for tango r4201. Added override keyword in a lot of places.
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522 override IChildWidget makeWidget (widgetID id, IContent content = null) { |
108
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523 debug (mdeWidgets) logger.trace ("Creating widget \""~id~'"'); |
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524 return createWidget (this, id, curData[id], content); |
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525 } |
114
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526 override IChildWidget makeWidget (widgetID id, WidgetData data, IContent content = null) { |
108
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527 debug (mdeWidgets) logger.trace ("Creating widget \""~id~'"'); |
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528 return createWidget (this, id, data, content); |
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529 } |
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530 |
114
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531 override wdims dimData (widgetID id) { |
108
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532 return curData.dims (id); |
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533 } |
114
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534 override void setData (widgetID id, WidgetData d) { |
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535 changes[id] = d; // also updates WidgetDataSet in data. |
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536 } |
114
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537 override void setDimData (widgetID id, wdims d) { |
108
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538 changes.setDims(id, d); // also updates WidgetDataSet in data. |
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539 } |
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540 //END IWidgetManager methods |
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541 |
99
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542 protected: |
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Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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543 final char[] fileName; |
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544 char[] defaultDesign; // The design specified in the file header. |
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545 char[] rendName; // Name of renderer; for saving and creating renderers |
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546 |
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Implemented an editable TextContent widget; it's now possible to edit text options using the GUI.
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547 // Loaded data, indexed by design name. May not be loaded for all gui designs: |
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548 scope WidgetDataSet[char[]] data; |
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549 private bool allLoaded = false; // applies to data |
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550 WidgetDataSet curData; // Current data |
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551 WidgetDataChanges changes; // Changes for the current design. |
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552 scope mt.DataSet changesDS; // changes and sections from user file (used for saving) |
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553 bool loadUserFile = true; // still need to load user file for saving? |
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554 |
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EnumContent; log level can be selected from a popup list.
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555 wdim w,h; // area available to the widgets |
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556 wdim mw,mh; // minimal area required by widgets (ideally for limiting w,h) |
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557 scope IChildWidget child; // The primary widget. |
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Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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558 uint setupN; // n to pass to IChildWidget.setup |
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559 |
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560 Mutex mutex; // lock on methods for use outside the package. |
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Gui reorganization and changes; partial implementation of floating widgets.
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561 } |