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annotate mde/gui/widget/PopupMenu.d @ 113:9824bee909fd

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Popup menu; works for simple menus except that clicking an item doesn't close it. Revised popup support a bit; EnumContentWidget is broken and due to be replaced.
author Diggory Hardy <diggory.hardy@gmail.com>
date Fri, 19 Dec 2008 10:32:28 +0000
parents mde/gui/widget/Popup.d@fe061009029d
children b16a534f5302
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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
113
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16 /*************************************************************************************************
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17 * Pop-up menus based on content structures.
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18 *************************************************************************************************/
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19 module mde.gui.widget.PopupMenu;
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20
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21 import mde.gui.widget.Widget;
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22 import mde.gui.widget.textContent;
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23 import mde.gui.widget.TextWidget;
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24 import mde.gui.widget.layout;
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25
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26 import mde.content.Content;
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27 import mde.gui.exception;
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28
113
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29 debug {
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30 import tango.util.log.Log : Log, Logger;
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31 private Logger logger;
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32 static this () {
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33 logger = Log.getLogger ("mde.gui.widget.PopupMenu");
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34 }
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35 }
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36
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37 /*************************************************************************************************
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38 * Widget which pops up a menu based on a content.
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39 *************************************************************************************************/
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40 class PopupMenuWidget : AParentSingleWidget
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41 {
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42 this (IWidgetManager mgr, widgetID id, WidgetData data, IContent c) {
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43 content = c;
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44 WDCMinCheck (data, 1,0, content);
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45 subWidget = menuContent (mgr, id, data, content);
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46
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47 adapter = mgr.renderer.getAdapter;
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48 adapter.text = content.toString (1);
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49 adapter.getDimensions (mw, mh);
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50 w = mw;
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51 h = mh;
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52 super (mgr, id, data);
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53 }
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54
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55 int clickEvent (wdabs, wdabs, ubyte b, bool state) {
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56 if (b == 1 && state == true) {
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57 // If active, the popup is closed by WidgetManager since the click isn't on the popup.
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58 if (!pushed) {
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59 pushed = true;
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60 mgr.addPopup (this, subWidget); // causes redraw
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61 mgr.addClickCallback (&openMenuCallback); // prevents first up-click from closing menu, if on self.
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62 }
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63 }
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64 return 0;
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65 }
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66
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67 void popupRemoved () {
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68 pushed = false;
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69 }
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70
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71 void draw () {
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72 mgr.renderer.drawButton (x,y, w,h, pushed);
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73 adapter.draw (x,y);
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74 }
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75
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76 protected:
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77 bool openMenuCallback (wdabs cx, wdabs cy, ubyte b, bool state) {
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78 if (b == 1 && state == false) { // receive first up-click
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79 mgr.removeCallbacks (cast(void*) this);
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80 if (cx >= x && cx < x+w && cy >= y && cy < y+h)
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81 return true; // up-click is on self; don't close the menu
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82 }
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83 return false;
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84 }
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85 bool pushed = false;
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86 IRenderer.TextAdapter adapter;
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87 IContent content;
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88 }
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89
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90 /*************************************************************************************************
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91 * A function which returns the most appropriate content menu widget.
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92 *************************************************************************************************/
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93 IChildWidget menuContent (IWidgetManager mgr, widgetID id, WidgetData data, IContent c) { if (c is null) throw new ContentException;
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94 if (cast(ContentList) c)
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95 return new MenuContentListWidget(mgr,id,data,c);
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96 else if (cast(EventContent) c)
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97 return new MenuButtonContentWidget(mgr,id,data,c);
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98 else // generic uneditable option
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99 return new DisplayContentWidget(mgr,id,data,c);
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100 }
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101
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102 /** A menu content-button, like ButtonContentWidget, but which can be activated with the up-click.
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103 */
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104 class MenuButtonContentWidget : ATextWidget
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105 {
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106 this (IWidgetManager mgr, widgetID id, WidgetData data, IContent c) {
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107 content = cast(EventContent) c;
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108 WDCMinCheck (data, 1,0, content);
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109 adapter = mgr.renderer.getAdapter ();
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110 super (mgr, id, data);
108
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111 }
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112
111
1655693702fc Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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113 bool setup (uint n, uint flags) {
113
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114 if (!(flags & 3)) return false; // string or renderer (and possibly font) changed
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115 adapter.text = content.toString(1);
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116 return super.setup (n, 3); // force redimensioning
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117 }
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118
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119 int clickEvent (wdabs, wdabs, ubyte b, bool state) {
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120 if (b == 1) { // on up or down click
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121 pushed = false;
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122 mgr.requestRedraw;
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123 content.endEvent;
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124 }
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125 return 0;
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126 }
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127
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128 void highlight (bool state) {
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129 pushed = state;
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130 }
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131
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132 void draw () {
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133 mgr.renderer.drawButton (x,y, w,h, pushed);
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134 adapter.draw (x,y);
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135 }
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136
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137 protected:
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138 EventContent content;
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139 bool pushed;
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140 }
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141
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142 /// Similar to layout.ContentListWidget but creates sub-widgets with menuContent.
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143 class MenuContentListWidget : GridWidget
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144 {
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145 this (IWidgetManager mgr, widgetID id, WidgetData data, IContent content) {
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146 cList = cast(ContentList) content;
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147 WDCCheck (data, 2, 0, cList);
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148
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149 cols = 1;
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150 if ((rows = cList.list.length) > 0) {
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151 subWidgets.length = rows;
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152 foreach (i, c; cList.list) {
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153 subWidgets[i] = menuContent (mgr,id,data,c);
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154 }
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155 } else {
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156 rows = 1;
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157 subWidgets = [mgr.makeWidget (id, new ErrorContent ("<empty list>"))];
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158 }
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159 super (mgr, id, data);
111
1655693702fc Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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160 }
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161
1655693702fc Resolved ticket #4, allowing widgets to reload strings and recalculate sizes mid-run.
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162 bool saveChanges () {
113
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163 return false; // sub-widgets don't have an id
108
c9fc2d303178 Added capability for border-less pop-up widgets. Simple pop-up menu.
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164 }
c9fc2d303178 Added capability for border-less pop-up widgets. Simple pop-up menu.
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165
113
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166 private:
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167 ContentList cList;
108
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168 }