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annotate mde/gui/widget/layout.d @ 109:2a1428ec5344

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Optional, visible spacing in grid layouts.
author Diggory Hardy <diggory.hardy@gmail.com>
date Thu, 04 Dec 2008 10:32:20 +0000
parents 08651e8a8c51
children 1655693702fc
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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 /// Gui layout widgets.
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17 module mde.gui.widget.layout;
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18
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19 import mde.gui.widget.Widget;
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20 import mde.gui.exception;
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21
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22 import mde.content.Content;
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23
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24 import tango.util.container.HashMap;
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25
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26 debug {
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27 import tango.util.log.Log : Log, Logger;
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28 private Logger logger;
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29 static this () {
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30 logger = Log.getLogger ("mde.gui.widget.layout");
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31 }
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32 }
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34 /*************************************************************************************************
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35 * Encapsulates a grid of Widgets.
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36 *
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37 * Currently there is no support for changing number of cells, sub-widgets or sub-widget properties
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38 * (namely isW/HSizable and minimal size) after this() has run.
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39 *
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40 * Since a grid with either dimension zero is not useful, there must be at least one sub-widget.
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41 *
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42 * The grid has no border but has spacing between widgets.
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43 *************************************************************************************************/
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44 class GridLayoutWidget : GridWidget
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45 {
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46 /** Constructor for a grid layout widget.
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47 *
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48 * Widget uses the initialisation data:
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49 * ---
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50 * ints = [widget_type, align_flags, rows, cols]
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51 * // or with column widths and row heights:
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52 * ints = [widget_type, align_flags, rows, cols, col1width, ..., colCwidth, row1height, ..., rowRheight]
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53 * strings = [w11, w12, ..., w1C, ..., wR1, ..., wRC]
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54 * ---
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55 * where R and C are the number of rows and columns, and wij is the ID (from parent Window's
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56 * list) for the widget in row i and column j. The number of parameters must be r*c + 3.
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57 *
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58 * The content parameter is passed on to all children accepting an IContent. */
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59 this (IWidgetManager mgr, widgetID id, WidgetData data, IContent content) {
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60 // Get grid size and check data
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61 // Check sufficient data for type, align-flags, rows, cols, and possibly row/col widths.
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62 if (data.ints.length != 4) throw new WidgetDataException (this);
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64 rows = data.ints[2];
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65 cols = data.ints[3];
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66 // Check: at least one sub-widget, ints length == 3, strings' length is correct:
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67 if (rows < 1 || cols < 1 || data.ints.length != 4 || data.strings.length != rows * cols)
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68 throw new WidgetDataException (this);
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69
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70 // Get all sub-widgets
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71 subWidgets.length = rows*cols;
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72 foreach (i, ref subWidget; subWidgets) {
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73 subWidget = mgr.makeWidget (data.strings[i], content);
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74 }
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75
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76 initWidths = mgr.dimData (id); // may be null, tested later
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78 super (mgr, id, data);
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79 }
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81 // Save column/row sizes. Currently always do so.
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82 bool saveChanges () {
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83 foreach (widget; subWidgets) // recurse on subwidgets
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84 widget.saveChanges ();
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85
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86 mgr.setDimData (id, col.width ~ row.width);
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87 return true;
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88 }
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89 protected:
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90 }
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93 /*************************************************************************************************
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94 * Iterates on an ContentList to produce a list of widgets, each of which is created with widgetID
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95 * data.strings[0]. If an IContent is passed, this is cast to a ContentList, otherwise
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96 * content.Items is used to get an IContent. It is an error if the content fails to cast to
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97 * ContentList.
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98 *************************************************************************************************/
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99 class ContentListWidget : GridWidget
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100 {
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101 this (IWidgetManager mgr, widgetID id, WidgetData data, IContent content) {
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102 debug scope (failure)
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103 logger.warn ("TrialContentLayoutWidget: failure");
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104 WDCheck (data, 2, 1);
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106 cList = cast(ContentList) content;
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107 if (cList is null)
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108 throw new ContentException;
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109
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110 cols = 1;
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111 if ((rows = cList.list.length) > 0) {
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112 subWidgets.length = rows;
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113 foreach (i, c; cList.list) {
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114 subWidgets[i] = mgr.makeWidget (data.strings[0], c);
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115 }
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116 } else {
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117 rows = 1;
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118 subWidgets = [mgr.makeWidget (data.strings[0], new ErrorContent ("<empty list>"))];
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119 }
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120 super (mgr, id, data);
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121 }
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122
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123 bool saveChanges () {
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124 // Since all sub-widgets have the same id, it only makes sense to call on one
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125 if (subWidgets is null)
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126 return false;
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127 return subWidgets[0].saveChanges;
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128 }
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129
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130 private:
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131 ContentList cList;
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132 }
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133
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134
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135 /*************************************************************************************************
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136 * Backend for grid-based (includes column/row) layout widgets.
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137 *
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138 * A deriving class must at least do some work in it's constructor (see Ddoc for this() below)
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139 * and provide an implementation of getCreationData() (unless Widget's version is sufficient).
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140 *
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141 * Since a grid with either dimension zero is not useful, there must be at least one sub-widget.
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142 *
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143 * The grid has no border but has spacing between widgets.
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144 *************************************************************************************************/
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145 abstract class GridWidget : AParentWidget
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146 {
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147 //BEGIN Creation & saving
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148 /** Partial constructor for a grid layout widget.
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149 *
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150 * Deriving classes should check data lengths, and set rows, cols, and the subWidgets array,
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151 * before calling this super constructor. (If it's necessary to call super(...) first,
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152 * the call to genCachedConstructionData can be moved to the derived this() methods.)
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153 *
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154 * Derived constructors may also set initWidths to the array of column widths followed by
92
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155 * row heights used to initially set the row/column dimensions.
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156 *
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157 * Sub-widgets are finalized here, so no methods should be called on sub-widgets before calling
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158 * this super. */
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159 protected this (IWidgetManager mgr, widgetID id, WidgetData data) {
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160 super (mgr, id, data);
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161
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162 // Create cell aligners with appropriate col/row adjustment function
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163 if (data.ints[1] & 1)
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164 col = AlignColumns.getInstance (id, cols);
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165 else
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166 col = (new AlignColumns (cols));
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167 col.addSetCallback (&setColWidth);
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168 if (data.ints[1] & 2)
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169 row = AlignColumns.getInstance (id~"R", rows); // id must be unique to that for cols!
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170 else
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171 row = (new AlignColumns (rows));
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172 row.addSetCallback (&setRowHeight);
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173 useSpacing = (data.ints[1] & 4) != 0;
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174 }
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175
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176 /** Prior to finalizing but after sub-widgets are finalized, some information needs to be
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177 * passed to the AlignColumns. */
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178 void prefinalize () {
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179 genCachedConstructionData; // min widths, sizableness
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180 }
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181
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182 /** Responsible for calculating the minimal size and initializing some stuff.
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183 *
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184 * As such, this must be the first function called after this(). */
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185 void finalize () {
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186 if (initWidths.length == cols + rows) {
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187 col.setWidths (initWidths[0..cols]);
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188 row.setWidths (initWidths[cols..$]);
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189 } else {
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190 col.setWidths;
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191 row.setWidths;
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192 }
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193 initWidths = null; // free
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194
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195 mw = col.mw;
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196 mh = row.mw;
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197 w = col.w;
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198 h = row.w;
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199
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200 // Tell subwidgets their new sizes. Positions are given by a later call to setPosition.
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201 foreach (i,widget; subWidgets) {
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202 // Resizing direction is arbitrarily set to negative:
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203 widget.setWidth (col.width[i % cols], -1);
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204 widget.setHeight (row.width[i / cols], -1);
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205 }
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206 }
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207 //END Creation & saving
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208
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209 //BEGIN Size & position
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210 bool isWSizable () {
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211 return col.firstSizable >= 0;
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212 }
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213 bool isHSizable () {
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214 return row.firstSizable >= 0;
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215 }
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216
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217 void setWidth (wdim nw, int dir) {
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218 w = col.resizeWidth (nw, dir);
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219 // Note: setPosition must be called after!
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220 }
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221 void setHeight (wdim nh, int dir) {
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222 h = row.resizeWidth (nh, dir);
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223 // Note: setPosition must be called after!
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224 }
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225
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226 void setPosition (wdim x, wdim y) {
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227 this.x = x;
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228 this.y = y;
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229
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230 debug assert (col.pos && row.pos, "setPosition: col/row.pos not set (code error)");
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231 foreach (i,widget; subWidgets)
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232 widget.setPosition (x + col.pos[i % cols], y + row.pos[i / cols]);
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233 }
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234 //END Size & position
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235
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236
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237 // Find the relevant widget.
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238 IChildWidget getWidget (wdim cx, wdim cy) {
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239 debug scope (failure)
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240 logger.warn ("getWidget: failure; values: click, pos, width - {}, {}, {} - {}, {}, {}", cx, x, w, cy, y, h);
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241 debug assert (cx >= x && cx < x + w && cy >= y && cy < y + h, "getWidget: not on widget (code error)");
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242
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243 // Find row/column:
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244 myDiff i = col.getCell (cx - x);
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245 myDiff j = row.getCell (cy - y);
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246 if (i < 0 || j < 0) // on a space between widgets
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247 return this;
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248
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249 // On a subwidget; recurse call:
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250 return subWidgets[i + j*cols].getWidget (cx, cy);
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251 }
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252
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253 // Resizing columns & rows
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254 int clickEvent (wdabs cx, wdabs cy, ubyte b, bool state) {
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255 debug scope (failure)
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256 logger.warn ("clickEvent: failure");
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257 if (b == 1 && state == true) {
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258 /* Note: Because of getWidget, this function is only called if the click is not on a
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259 * sub-widget, so we know it's on some divisor (so at least one of resizeCol and
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260 * resizeRow is non-negative). */
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261
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262 // find col/row's resizeD & resizeU
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263 if (col.findResizeCols (cx - x) && row.findResizeCols (cy - y))
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264 return 0; // unable to resize
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265
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266 dragX = cx;
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267 dragY = cy;
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268
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269 mgr.addClickCallback (&endCallback);
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270 mgr.addMotionCallback (&resizeCallback);
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271 }
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272 return 0;
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273 }
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274
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275 void draw () {
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276 super.draw ();
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277
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278 foreach (widget; subWidgets)
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279 widget.draw ();
109
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280
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281 if (useSpacing)
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282 mgr.renderer.drawSpacers (x,y, w,h, col.pos[1..$], row.pos[1..$]);
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283 }
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284
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285 package:
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286 /* Calculations which need to be run whenever a new sub-widget structure is set
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287 * (i.e. to produce cached data calculated from construction data).
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288 * Also need to be re-run if the renderer changes.
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289 *
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290 * rows, cols and subWidgets must be set before calling. Part of the set-up for AlignColumns
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291 * (col and row). subWidgets need to know their minimal size and resizability. */
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292 void genCachedConstructionData () {
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293 // Will only change if renderer changes:
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294 // NOTE shared AlignColumns get this set by all sharing GridWidgets
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295 col.spacing = row.spacing = useSpacing ? mgr.renderer.layoutSpacing : 0;
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296
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297 // Calculate the minimal column and row sizes:
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298 // AlignColumns (row, col) takes care of initializing minWidth.
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299 foreach (i,widget; subWidgets) {
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300 // Increase dimensions if current minimal size is larger:
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301 myIt n = i % cols; // column
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302 wdim md = widget.minWidth;
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303 if (col.minWidth[n] < md) col.minWidth[n] = md;
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304 n = i / cols; // row
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305 md = widget.minHeight;
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306 if (row.minWidth[n] < md) row.minWidth[n] = md;
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307 }
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308
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309 // Find which cols/rows are resizable:
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310 // AlignColumns initializes sizable, and sets first and last sizables.
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311 forCols:
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312 for (myIt i = 0; i < cols; ++i) { // for each column
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313 for (myIt j = 0; j < subWidgets.length; j += cols) // for each row
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314 if (!subWidgets[i+j].isWSizable) // column not resizable
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315 continue forCols; // continue the outer for loop
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316
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317 // column is resizable if we get to here
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318 col.sizable[i] = true;
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319 }
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320
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321 forRows:
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322 for (myIt i = 0; i < subWidgets.length; i += cols) { // for each row
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323 for (myIt j = 0; j < cols; ++j) // for each column
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324 if (!subWidgets[i+j].isHSizable)
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325 continue forRows;
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326
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327 row.sizable[i / cols] = true;
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328 }
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329 }
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330
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331 private:
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332 void setColWidth (myIt i, wdim w, int dir) {
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333 for (myIt j = 0; j < rows; ++j) {
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334 subWidgets[i + cols*j].setWidth (w, dir);
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335 }
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336 }
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337 void setRowHeight (myIt j, wdim h, int dir) {
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338 for (myIt i = 0; i < cols; ++i) {
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339 subWidgets[i + cols*j].setHeight (h, dir);
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340 }
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341 }
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342
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343
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344 //BEGIN Col/row resizing callback
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345 void resizeCallback (wdim cx, wdim cy) {
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346 col.resizeCols (cx - dragX);
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347 row.resizeCols (cy - dragY);
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348
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349 // NOTE: all adjustments are relative; might be better if they were absolute?
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350 dragX = cx;
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351 dragY = cy;
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352
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353 foreach (i,widget; subWidgets)
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diff changeset
354 widget.setPosition (x + col.pos[i % cols],
03fa79a48c48 Fixed resizing bugs in previous commit and made code cleaner and more efficient.
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parents: 45
diff changeset
355 y + row.pos[i / cols]);
77
3dfd934100f7 Continuing widget data changes started in last commit: all previous widgets work again now (but lacking saving).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 72
diff changeset
356 mgr.requestRedraw;
42
8bf53e711cc7 Partially implemented column/row resizing (code not working well).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 41
diff changeset
357 }
58
d43523ed4b62 Included a wdim typedef for all variables to do with window position or size instead of just using int.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 46
diff changeset
358 bool endCallback (wdabs cx, wdabs cy, ubyte b, bool state) {
42
8bf53e711cc7 Partially implemented column/row resizing (code not working well).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 41
diff changeset
359 if (b == 1 && state == false) {
77
3dfd934100f7 Continuing widget data changes started in last commit: all previous widgets work again now (but lacking saving).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 72
diff changeset
360 mgr.removeCallbacks (cast(void*) this);
45
0fd51d2c6c8a Several changes to resising windows and layout widgets. This commit still has some bugs.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 43
diff changeset
361 return true; // we've handled the up-click
42
8bf53e711cc7 Partially implemented column/row resizing (code not working well).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 41
diff changeset
362 }
45
0fd51d2c6c8a Several changes to resising windows and layout widgets. This commit still has some bugs.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 43
diff changeset
363 return false; // we haven't handled it
40
b28d7adc786b Made GUI more robust to mutable data changes and improved much of GridLayoutWidget's code.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 39
diff changeset
364 }
37
052df9b2fe07 Allowed widget resizing, changed widget IDs and made Input catch any callback exceptions.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 34
diff changeset
365
40
b28d7adc786b Made GUI more robust to mutable data changes and improved much of GridLayoutWidget's code.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 39
diff changeset
366 protected:
42
8bf53e711cc7 Partially implemented column/row resizing (code not working well).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 41
diff changeset
367 // Data for resizing cols/rows:
58
d43523ed4b62 Included a wdim typedef for all variables to do with window position or size instead of just using int.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 46
diff changeset
368 wdim dragX, dragY; // coords where drag starts
46
03fa79a48c48 Fixed resizing bugs in previous commit and made code cleaner and more efficient.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 45
diff changeset
369 //END Col/row resizing callback
42
8bf53e711cc7 Partially implemented column/row resizing (code not working well).
Diggory Hardy <diggory.hardy@gmail.com>
parents: 41
diff changeset
370
45
0fd51d2c6c8a Several changes to resising windows and layout widgets. This commit still has some bugs.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 43
diff changeset
371 myIt cols, rows; // number of cells in grid
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
372 wdim[] initWidths; // see this / setInitialSize
109
2a1428ec5344 Optional, visible spacing in grid layouts.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 105
diff changeset
373 bool useSpacing; // true if spacing should be applied
43
1530d9c04d4d Column/row resizing implemented for GridLayoutWidget (finally)!
Diggory Hardy <diggory.hardy@gmail.com>
parents: 42
diff changeset
374
1530d9c04d4d Column/row resizing implemented for GridLayoutWidget (finally)!
Diggory Hardy <diggory.hardy@gmail.com>
parents: 42
diff changeset
375 /* All widgets in the grid, by row. Order: [ 0 1 ]
1530d9c04d4d Column/row resizing implemented for GridLayoutWidget (finally)!
Diggory Hardy <diggory.hardy@gmail.com>
parents: 42
diff changeset
376 * [ 2 3 ] */
92
085f2ca31914 Shared alignments supported in more complex cases.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 91
diff changeset
377 //IChildWidget[] subWidgets;
37
052df9b2fe07 Allowed widget resizing, changed widget IDs and made Input catch any callback exceptions.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 34
diff changeset
378
90
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
379 AlignColumns col, row;
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
380 }
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
381
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
382
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
383 /**************************************************************************************************
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
384 * Alignment device
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
385 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
386 * E.g. can control widths of columns within a grid, and provide sensible resizing, respecting the
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
387 * minimal width required by each cell in a column. Is not restricted to horizontal widths, but to
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
388 * ease descriptions, a horizontal context (column widths) is assumed.
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
389 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
390 * Cells should be of type IChildWidget.
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
391 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
392 * Cells are not directly interacted with, but minimal widths for each column are passed, and
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
393 * callback functions are used to adjust the width of any column.
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
394 *************************************************************************************************/
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
395 package class AlignColumns
90
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
396 {
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
397 /** Instance returned will be shared with any other widgets of same widgetID.
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
398 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
399 * Also ensures each widget sharing an instance expects the same number of columns. */
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
400 static AlignColumns getInstance (widgetID id, myIt columns) {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
401 AlignColumns* p = id in instances;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
402 if (p) {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
403 if (p.minWidth.length != columns)
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
404 throw new GuiException ("AlignColumns: no. of columns varies between sharing widgets (code error)");
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
405 //logger.trace ("Shared alignment for: "~id);
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
406 return *p;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
407 } else {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
408 auto a = new AlignColumns (columns);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
409 instances[id] = a;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
410 return a;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
411 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
412 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
413
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
414 /** Create an instance. After creation, the number of columns can only be changed by calling
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
415 * reset.
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
416 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
417 * After creation, minimal widths should be set for all columns (minWidth) and
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
418 * setWidths must be called before other functions are used. */
90
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
419 this (myIt columns) {
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
420 reset (columns);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
421 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
422
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
423 /** Reset all column information (only keep set callbacks).
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
424 *
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
425 * Widths should be set after calling, as on creation. */
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
426 void reset (myIt columns) {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
427 if (columns < 1)
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
428 throw new GuiException("AlignColumns: created with <1 column (code error)");
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
429 minWidth = new wdim[columns];
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
430 sizable = new bool[columns];
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
431 width = null; // enforce calling setWidths after this
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
432 firstSizable = -1;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
433 lastSizable = -1;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
434 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
435
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
436 /** Initialize widths, either from minWidths or from supplied list, checking validity.
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
437 *
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
438 * Also calculates first/lastSizable from sizable, overall minimal width and column positions.
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
439 */
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
440 void setWidths (wdim[] data = null) {
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
441 if (!width) {
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
442 if (data) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
443 debug assert (data.length == minWidth.length, "setWidths called with bad data length (code error)");
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
444 width = data.dup; // data is shared by other widgets with same id so must be .dup'ed
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
445 // And check sizes are valid:
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
446 foreach (i, m; minWidth) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
447 if (!sizable[i] || width[i] < m) // if width is fixed or less than minimum
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
448 width[i] = m;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
449 }
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
450 } else
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
451 width = minWidth.dup;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
452
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
453 /* Calculate the minimal width of all columns plus spacing. */
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
454 mw = spacing * cast(wdim)(minWidth.length - 1);
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
455 foreach (imw; minWidth)
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
456 mw += imw;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
457
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
458 genPositions;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
459
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
460 foreach (i,s; sizable) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
461 if (s) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
462 firstSizable = i;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
463 goto gotFirst;
91
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
464 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
465 }
95
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
466 return; // none resizable - don't search for lastSizable
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
467 gotFirst:
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
468 foreach_reverse (i,s; sizable) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
469 if (s) {
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
470 lastSizable = i;
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
471 return; // done
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 94
diff changeset
472 }
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473 }
91
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474 }
90
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475 }
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476
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diff changeset
477 /** Add a callback to be called to notify changes in a column's width.
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diff changeset
478 *
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diff changeset
479 * All callbacks added are called on a width change so that multiple objects may share a
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diff changeset
480 * CellAlign object. */
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diff changeset
481 typeof(this) addSetCallback (void delegate (myIt,wdim,int) setCW) {
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diff changeset
482 assert (setCW, "CellAlign.this: setCW is null (code error)");
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diff changeset
483 setWidthCb ~= setCW;
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diff changeset
484 return this;
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diff changeset
485 }
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diff changeset
486
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diff changeset
487 /** Get the row/column of relative position l.
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488 *
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489 * returns:
95
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490 * -i if in space to left of col i, or i if on col i. */
90
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diff changeset
491 myDiff getCell (wdim l) {
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diff changeset
492 debug assert (width, "AlignColumns not initialized when getCell called (code error)");
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493 myDiff i = minWidth.length - 1; // starting from right...
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diff changeset
494 while (l < pos[i]) { // decrement while left of this column
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diff changeset
495 debug assert (i > 0, "getCell: l < pos[0] (code error)");
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496 --i;
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497 } // now (l >= pos[i])
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diff changeset
498 if (l >= pos[i] + width[i]) { // between columns
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diff changeset
499 debug assert (i+1 < minWidth.length, "getCell: l >= total width (code error)");
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500 return -i - 1; // note: i might be 0 so cannot just return -i
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501 }
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diff changeset
502 return i;
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503 }
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504
91
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diff changeset
505 /** Adjust total size with direction dir.
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506 *
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507 * nw should be at least the minimal width. */
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508 wdim resizeWidth (wdim nw, int dir) {
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diff changeset
509 debug assert (width, "AlignColumns not initialized when resizeWidth called (code error)");
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diff changeset
510 if (nw < mw) {
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diff changeset
511 debug logger.warn ("Widget dimension set below minimal");
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diff changeset
512 nw = mw;
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513 }
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diff changeset
514 if (nw == w) return w;
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diff changeset
515
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diff changeset
516 wdim diff = nw - w;
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diff changeset
517 if (firstSizable == -1)
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diff changeset
518 diff = adjustCellSizes (diff, minWidth.length-1, -1);
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diff changeset
519 else
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parents: 94
diff changeset
520 diff = adjustCellSizes (diff, (dir == -1 ? lastSizable : firstSizable), dir);
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diff changeset
521
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diff changeset
522 debug if (nw != w) {
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diff changeset
523 logger.trace ("resizeWidth on {} to {} failed, new width: {}, diff {}, firstSizable {}, columns {}",cast(void*)this, nw,w, diff, firstSizable, minWidth.length);
91
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524 /+ Also print column widths & positions:
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diff changeset
525 logger.trace ("resizeWidth to {} failed! Column dimensions and positions:",nw);
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diff changeset
526 foreach (i,w; width)
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diff changeset
527 logger.trace ("\t{}\t{}", w,pos[i]);+/
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diff changeset
528 }
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diff changeset
529 return w;
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parents: 90
diff changeset
530 }
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diff changeset
531
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diff changeset
532 /** Calculate resizeU/resizeD, and return true if unable to resize.
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533 *
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534 * This and resizeCols are for moving dividers between cells. */
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535 bool findResizeCols (wdim l) {
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parents: 85
diff changeset
536 resizeU = -getCell (l); // potential start for upward-resizes
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diff changeset
537 if (resizeU <= 0)
2a364c7d82c9 Boolean options can be adjusted from the gui now (using a very basic widget). Also some bug-fixes.
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diff changeset
538 return true; // not on a space between cells
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parents: 90
diff changeset
539 resizeD = resizeU - 1; // potential start for downward-resizes
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parents: 90
diff changeset
540
90
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parents: 85
diff changeset
541 while (!sizable[resizeU]) { // find first actually resizable column (upwards)
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diff changeset
542 ++resizeU;
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diff changeset
543 if (resizeU >= minWidth.length) { // cannot resize
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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diff changeset
544 resizeU = -1;
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
545 return true;
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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diff changeset
546 }
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
547 }
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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diff changeset
548
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
549 while (!sizable[resizeD]) { // find first actually resizable column (downwards)
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
550 --resizeD;
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Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
551 if (resizeD < 0) { // cannot resize
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
552 resizeU = -1; // resizeU is tested to check whether resizes are possible
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
553 return true;
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
554 }
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Diggory Hardy <diggory.hardy@gmail.com>
parents: 43
diff changeset
555 }
0fd51d2c6c8a Several changes to resising windows and layout widgets. This commit still has some bugs.
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parents: 43
diff changeset
556
90
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parents: 85
diff changeset
557 return false; // can resize
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
558 }
91
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parents: 90
diff changeset
559 /// Resize columns based on findResizeCols
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
560 void resizeCols (wdim diff)
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
561 {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
562 if (resizeU <= 0) return;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
563
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
564 // do shrinking first (in case we hit the minimum)
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
565 if (diff >= 0) {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
566 diff = -adjustCellSizes (-diff, resizeU, 1);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
567 adjustCellSizes (diff, resizeD, -1);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
568 } else {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
569 diff = -adjustCellSizes (diff, resizeD, -1);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
570 adjustCellSizes (diff, resizeU, 1);
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
571 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
572 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
573
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
574 /* Generate position infomation for each column and set w. */
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
575 private void genPositions () {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
576 pos.length = minWidth.length;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
577
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
578 w = 0;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
579 foreach (i, cw; width) {
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
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parents: 90
diff changeset
580 pos[i] = w;
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parents: 90
diff changeset
581 w += cw + spacing;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
582 }
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
583 w -= spacing;
4d5d53e4f881 Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 90
diff changeset
584 }
90
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
585
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
586 /* Adjust the total size of rows/columns (including spacing) by diff.
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
587 *
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Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
588 * Params:
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
589 * diff = amount to increase/decrease the total size
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
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parents: 85
diff changeset
590 * start= index for col/row to start resizing on
b525ff28774b Widgets generated dynamically from a list can now be standard widgets selected from data files.
Diggory Hardy <diggory.hardy@gmail.com>
parents: 85
diff changeset
591 * incr = direction to resize in (added to index each step). Must be either -1 or +1.
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parents: 85
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592 *
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593 * Returns:
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594 * The amount adjusted. This may be larger than diff, since cellD is clamped by cellDMin.
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595 *
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596 * Note: Check variable used for start is valid before calling! If a non-sizable column's
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597 * index is passed, this should get increased (if diff > 0) but not decreased.
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598 */
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599 private wdim adjustCellSizes (wdim diff, myDiff start, int incr)
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600 in {
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601 assert (width.length == minWidth.length, "CellAlign.adjustCellSizes: width is null (code error)");
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602 // Most likely if passed negative when sizing is disabled:
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603 assert (start >= 0 && start < minWidth.length, "adjustCellSizes: invalid start");
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604 debug assert (incr == 1 || incr == -1, "adjustCellSizes: invalid incr");
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605 } body {
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606 debug scope(failure) logger.trace ("adjustCellSizes: failure");
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607 myDiff i = start;
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608 if (diff > 0) { // increase size of first resizable cell
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609 width[i] += diff;
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610 foreach (dg; setWidthCb)
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611 dg(i, width[i], incr);
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612 }
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613 else if (diff < 0) { // decrease
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614 wdim rd = diff; // running diff
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615 aCSwhile:
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616 while (true) {
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617 width[i] += rd; // decrease this cell's size (but may be too much)
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618 rd = width[i] - minWidth[i];
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619 if (rd >= 0) { // OK; we're done
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620 foreach (dg; setWidthCb)
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621 dg(i, width[i], incr);
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622 break; // we hit the mark exactly: diff is correct
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623 }
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624
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625 // else we decreased it too much!
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626 width[i] = minWidth[i];
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627 foreach (dg; setWidthCb)
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628 dg(i, width[i], incr);
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629 // rd is remainder to decrease by
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630
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631 do {
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632 i += incr;
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633 if (i < 0 || i >= minWidth.length) { // run out of next cells
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634 diff -= rd; // still had rd left to decrease
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635 break aCSwhile; // exception: Array index out of bounds
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636 }
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637 } while (!sizable[i]) // iterate again if row/col isn't resizable
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638 }
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639 }
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640 // else no adjustment needed (diff == 0)
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641
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642 genPositions;
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643 return diff;
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644 }
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645
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646 /** Minimal width for each column.
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647 *
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648 * Initialized to zero. Each class using this AlignColumns should, for each column, increase
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649 * this value to the maximum of the minimal widths (in other words, set
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650 * minWidth[i] = max(minWidth[i], cell.minWidth) for each cell in column i). */
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651 wdim[] minWidth; // minimal widths (set by genCachedConstructionData)
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652
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653 /** For each column i, sizable[i] is true if that column is resizable.
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654 *
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655 * Set along with minWidth before calling setWidths. */
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656 bool[] sizable; // set by genCachedConstructionData
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657
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658 /** Current width, relative position (for each column)
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659 *
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660 * Treat as READ ONLY outside this class! */
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661 wdim[] width; // only adjusted within the class
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662 wdim[] pos; /// ditto
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663 protected:
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664 myDiff resizeD, // resizeCols works down from this index (<0 if not resizing)
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665 resizeU; // and up from this index
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666 wdim spacing; // used by genPositions (which cannot access the layout class's data)
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667 wdim w,mw; // current & minimal widths
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668 /* indicies of the first/last resizable column (negative if none are resizable). */
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669 myDiff firstSizable = -1, lastSizable = -1; // set by calcFLSbl
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670 // Callbacks used to actually adjust a column's width:
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671 void delegate (myIt,wdim,int) setWidthCb[]; // set width of a column, with resize direction
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672
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673 static HashMap!(widgetID,AlignColumns) instances;
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674 static this () {
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675 instances = new HashMap!(widgetID,AlignColumns);
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676 }
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677 }
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678
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679 // Index types. Note that in some cases they need to hold negative values.
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680 // int is used for resizing direction (although ptrdiff_t would be more appropriate),
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681 // since the value must always be -1 or +1.
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682 alias size_t myIt;
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683 alias ptrdiff_t myDiff;