Mercurial > projects > mde
annotate mde/gui/widget/layout.d @ 32:316b0230a849
Lots more work on the GUI. Also renamed lots of files.
Lots of changes to the GUI. Renderer is now used exclusively for rendering and WidgetDecoration is gone.
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committer: Diggory Hardy <diggory.hardy@gmail.com>
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Wed, 30 Apr 2008 18:05:56 +0100 |
parents | |
children | 6b4116e6355c |
rev | line source |
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32
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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 : WidgetDataException; |
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21 |
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22 /// Encapsulates a grid of Widgets |
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23 class GridWidget : Widget |
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24 { |
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25 this (IWindow wind, IParentWidget, int[] data) { |
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26 // Get grid size |
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27 if (data.length < 2) throw new WidgetDataException; |
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28 rows = data[0]; |
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29 cols = data[1]; |
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30 |
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31 window = wind; |
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32 |
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33 // Get all sub-widgets |
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34 // Check: correct data length and rows*cols >= 0 (know data.length - 2 >= 0). |
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35 if (data.length != 2 + rows * cols) throw new WidgetDataException; |
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36 subWidgets.length = rows*cols; |
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37 foreach (i, inout subWidget; subWidgets) { |
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38 subWidget = window.getWidget (data[i+2], this); |
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39 } |
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40 |
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41 getMinimumSize (w,h); // Calculate the size (current size is not saved) |
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42 } |
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43 |
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44 // Calculates from all rows and columns of widgets. |
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45 void getMinimumSize (out int w, out int h) { |
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46 if (rows*cols == 0) { // special case |
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47 w = h = 0; |
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48 return; |
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49 } |
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50 |
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51 // Find the sizes of all subWidgets |
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52 int[] widgetW = new int[subWidgets.length]; // dimensions |
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53 int[] widgetH = new int[subWidgets.length]; |
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54 foreach (i,widget; subWidgets) widget.getCurrentSize (widgetW[i],widgetH[i]); |
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55 |
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56 // Find row heights and column widths (non cumulative) |
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57 rowH.length = rows; |
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58 colW.length = cols; //WARNING: code reliant on these being initialised to zero |
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59 for (uint i = 0; i < subWidgets.length; ++i) { |
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60 uint x = i / cols; // row |
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61 if (rowH[x] < widgetH[i]) rowH[x] = widgetH[i]; |
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62 x = i % cols; // column |
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63 if (colW[x] < widgetW[i]) colW[x] = widgetW[i]; |
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64 } |
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65 |
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66 // rowY / colX |
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67 rowY.length = rows; |
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68 colX.length = cols; |
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69 int spacing = window.renderer.layoutSpacing; |
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70 |
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71 int cum = 0; |
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72 foreach (i, x; rowH) { |
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73 rowY[i] = cum; |
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74 cum += x + spacing; |
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75 } |
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76 h = cum - spacing; // total height |
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77 cum = 0; |
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78 foreach (i, x; colW) { |
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79 colX[i] = cum; |
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80 cum += x + spacing; |
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81 } |
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82 w = cum - spacing; // total width |
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83 } |
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84 |
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85 void draw (int x, int y) { |
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86 super.draw (x,y); |
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87 |
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88 foreach (i,widget; subWidgets) { |
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89 widget.draw (x + colX[i % cols], y + rowY[i / cols]); |
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90 } |
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91 } |
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92 |
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93 // Pass event on to relevant widget. Simply return if not on a widget. |
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94 void clickEvent (ushort cx, ushort cy, ubyte b, bool state) { |
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95 if (rows*cols == 0) return; // special case |
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96 |
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97 // Find the column |
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98 int i = cols - 1; // starting from right... |
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99 while (cx < colX[i]) { // decrement while left of this column |
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100 if (i == 0) return; // left of first column |
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101 --i; |
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102 } // now (cx >= colX[i]) |
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103 if (cx >= colX[i] + colW[i]) return; // between columns |
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104 |
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105 // Find the row; |
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106 int j = rows - 1; |
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107 while (cy < rowY[j]) { |
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108 if (j == 0) return; |
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109 --j; |
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110 } |
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111 if (cy >= rowY[j] + rowH[j]) return; |
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112 |
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113 // Now we know it's in widget (i,j)'s cell (but the widget may not take up the whole cell) |
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114 cx -= colX[i]; |
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115 cy -= rowY[j]; |
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116 IWidget widg = subWidgets[i + j*cols]; |
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117 widg.getCurrentSize (i,j); |
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118 if (cx < i && cy < j) |
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119 widg.clickEvent (cx, cy, b, state); |
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120 } |
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121 |
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122 protected: |
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123 int rows, cols; // number of cells in grid |
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124 int[] rowH; // row height (highest widget in the row) |
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125 int[] colW; // column width (widest widget) |
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126 int[] rowY; // cumulative rowH[i-1] + border and padding |
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127 int[] colX; // cumulative colW[i-1] + border and padding |
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128 IWidget[] subWidgets; // all widgets in the grid (by row): |
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129 /* SubWidget order: [ 2 3 ] |
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130 * [ 0 1 ] */ |
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131 } |