Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/TableLayout.d @ 70:46a6e0e6ccd4
Merge with d-fied sources of 3.4M7
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Thu, 22 May 2008 01:36:46 +0200 |
| parents | 7943b8e4206d |
| children | 4878bef4a38e |
| rev | line source |
|---|---|
| 10 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
|
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changeset
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10 * Florian Priester - bug 106059 |
| 10 | 11 * Port to the D programming language: |
| 12 * Frank Benoit <benoit@tionex.de> | |
| 13 *******************************************************************************/ | |
| 14 module dwtx.jface.viewers.TableLayout; | |
| 15 | |
| 16 import dwtx.jface.viewers.ColumnLayoutData; | |
| 17 import dwtx.jface.viewers.ColumnPixelData; | |
| 18 import dwtx.jface.viewers.ColumnWeightData; | |
| 19 | |
| 20 import tango.util.collection.model.Seq; | |
| 21 import tango.util.collection.ArraySeq; | |
| 22 | |
| 23 import dwt.DWT; | |
| 24 import dwt.graphics.Point; | |
| 25 import dwt.widgets.Composite; | |
| 26 import dwt.widgets.Item; | |
| 27 import dwt.widgets.Layout; | |
| 28 import dwt.widgets.Table; | |
| 29 import dwt.widgets.TableColumn; | |
| 30 import dwt.widgets.Tree; | |
| 31 import dwt.widgets.TreeColumn; | |
| 32 import dwtx.core.runtime.Assert; | |
| 33 import dwtx.jface.layout.TableColumnLayout; | |
| 34 | |
| 35 import dwt.dwthelper.utils; | |
| 36 | |
| 37 /** | |
| 38 * A layout for a table. Call <code>addColumnData</code> to add columns. | |
| 39 * The TableLayout {@link ColumnLayoutData} is only valid until the table | |
| 40 * is resized. To keep the proportions constant when the table is resized | |
| 41 * see {@link TableColumnLayout} | |
| 42 */ | |
| 43 public class TableLayout : Layout { | |
| 44 | |
| 45 /** | |
| 46 * The number of extra pixels taken as horizontal trim by the table column. | |
| 47 * To ensure there are N pixels available for the content of the column, | |
| 48 * assign N+COLUMN_TRIM for the column width. | |
| 49 * | |
| 50 * @since 3.1 | |
| 51 */ | |
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52 private static int COLUMN_TRIM; |
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53 |
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54 static { |
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55 if ("win32".equals(DWT.getPlatform())) { //$NON-NLS-1$ |
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56 COLUMN_TRIM = 4; |
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57 } else if ("carbon".equals(DWT.getPlatform())) { //$NON-NLS-1$ |
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58 COLUMN_TRIM = 24; |
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59 } else { |
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60 COLUMN_TRIM = 3; |
| 68 | 61 } |
| 10 | 62 } |
| 63 | |
| 64 /** | |
| 65 * The list of column layout data (element type: | |
| 66 * <code>ColumnLayoutData</code>). | |
| 67 */ | |
| 68 private Seq!(ColumnLayoutData) columns; | |
| 69 | |
| 70 /** | |
| 71 * Indicates whether <code>layout</code> has yet to be called. | |
| 72 */ | |
| 73 private bool firstTime = true; | |
| 74 | |
| 75 /** | |
| 76 * Creates a new table layout. | |
| 77 */ | |
| 78 public this() { | |
| 79 columns = new ArraySeq!(ColumnLayoutData); | |
| 80 } | |
| 81 | |
| 82 /** | |
| 83 * Adds a new column of data to this table layout. | |
| 84 * | |
| 85 * @param data | |
| 86 * the column layout data | |
| 87 */ | |
| 88 public void addColumnData(ColumnLayoutData data) { | |
| 89 columns.append(data); | |
| 90 } | |
| 91 | |
| 92 /* | |
| 93 * (non-Javadoc) Method declared on Layout. | |
| 94 */ | |
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95 public override Point computeSize(Composite c, int wHint, int hHint, bool flush) { |
| 10 | 96 if (wHint !is DWT.DEFAULT && hHint !is DWT.DEFAULT) { |
| 97 return new Point(wHint, hHint); | |
| 98 } | |
| 99 | |
| 100 Table table = cast(Table) c; | |
| 101 // To avoid recursions. | |
| 102 table.setLayout(null); | |
| 103 // Use native layout algorithm | |
| 104 Point result = table.computeSize(wHint, hHint, flush); | |
| 105 table.setLayout(this); | |
| 106 | |
| 107 int width = 0; | |
| 108 int size = columns.size(); | |
| 109 foreach( layoutData; columns ){ | |
| 110 if ( auto col = cast(ColumnPixelData) layoutData ) { | |
| 111 width += col.width; | |
| 112 if (col.addTrim) { | |
| 113 width += COLUMN_TRIM; | |
| 114 } | |
| 115 } else if ( auto col = cast(ColumnWeightData) layoutData ) { | |
| 116 width += col.minimumWidth; | |
| 117 } else { | |
| 118 Assert.isTrue(false, "Unknown column layout data");//$NON-NLS-1$ | |
| 119 } | |
| 120 } | |
| 121 if (width > result.x) { | |
| 122 result.x = width; | |
| 123 } | |
| 124 return result; | |
| 125 } | |
| 126 | |
| 127 /* | |
| 128 * (non-Javadoc) Method declared on Layout. | |
| 129 */ | |
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Fix override and super aliases
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parents:
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diff
changeset
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130 public override void layout(Composite c, bool flush) { |
| 10 | 131 // Only do initial layout. Trying to maintain proportions when resizing |
| 132 // is too hard, | |
| 133 // causes lots of widget flicker, causes scroll bars to appear and | |
| 134 // occasionally stick around (on Windows), | |
| 135 // requires hooking column resizing as well, and may not be what the | |
| 136 // user wants anyway. | |
| 137 if (!firstTime) { | |
| 138 return; | |
| 139 } | |
| 140 | |
| 141 int width = c.getClientArea().width; | |
| 142 | |
| 143 // XXX: Layout is being called with an invalid value the first time | |
| 144 // it is being called on Linux. This method resets the | |
| 145 // Layout to null so we make sure we run it only when | |
| 146 // the value is OK. | |
| 147 if (width <= 1) { | |
| 148 return; | |
| 149 } | |
| 150 | |
| 151 Item[] tableColumns = getColumns(c); | |
| 152 int size = Math.min(columns.size(), tableColumns.length); | |
| 153 int[] widths = new int[size]; | |
| 154 int fixedWidth = 0; | |
| 155 int numberOfWeightColumns = 0; | |
| 156 int totalWeight = 0; | |
| 157 | |
| 158 // First calc space occupied by fixed columns | |
| 159 for (int i = 0; i < size; i++) { | |
| 160 ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i); | |
| 161 if ( auto cpd = cast(ColumnPixelData) col ) { | |
| 162 int pixels = cpd.width; | |
| 163 if (cpd.addTrim) { | |
| 164 pixels += COLUMN_TRIM; | |
| 165 } | |
| 166 widths[i] = pixels; | |
| 167 fixedWidth += pixels; | |
| 168 } else if ( auto cw = cast(ColumnWeightData) col ) { | |
| 169 numberOfWeightColumns++; | |
| 170 // first time, use the weight specified by the column data, | |
| 171 // otherwise use the actual width as the weight | |
| 172 // int weight = firstTime ? cw.weight : | |
| 173 // tableColumns[i].getWidth(); | |
| 174 int weight = cw.weight; | |
| 175 totalWeight += weight; | |
| 176 } else { | |
| 177 Assert.isTrue(false, "Unknown column layout data");//$NON-NLS-1$ | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 // Do we have columns that have a weight | |
| 182 if (numberOfWeightColumns > 0) { | |
| 183 // Now distribute the rest to the columns with weight. | |
| 184 int rest = width - fixedWidth; | |
| 185 int totalDistributed = 0; | |
| 186 for (int i = 0; i < size; ++i) { | |
| 187 ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i); | |
| 188 if (auto cw = cast(ColumnWeightData) col ) { | |
| 189 // calculate weight as above | |
| 190 // int weight = firstTime ? cw.weight : | |
| 191 // tableColumns[i].getWidth(); | |
| 192 int weight = cw.weight; | |
| 193 int pixels = totalWeight is 0 ? 0 : weight * rest | |
| 194 / totalWeight; | |
| 195 if (pixels < cw.minimumWidth) { | |
| 196 pixels = cw.minimumWidth; | |
| 197 } | |
| 198 totalDistributed += pixels; | |
| 199 widths[i] = pixels; | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 // Distribute any remaining pixels to columns with weight. | |
| 204 int diff = rest - totalDistributed; | |
| 205 for (int i = 0; diff > 0; ++i) { | |
| 206 if (i is size) { | |
| 207 i = 0; | |
| 208 } | |
| 209 ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i); | |
| 210 if (cast(ColumnWeightData)col ) { | |
| 211 ++widths[i]; | |
| 212 --diff; | |
| 213 } | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 firstTime = false; | |
| 218 | |
| 219 for (int i = 0; i < size; i++) { | |
| 220 setWidth(tableColumns[i], widths[i]); | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 /** | |
| 225 * Set the width of the item. | |
| 226 * | |
| 227 * @param item | |
| 228 * @param width | |
| 229 */ | |
| 230 private void setWidth(Item item, int width) { | |
| 231 if ( cast(TreeColumn)item ) { | |
| 232 (cast(TreeColumn) item).setWidth(width); | |
| 233 } else { | |
| 234 (cast(TableColumn) item).setWidth(width); | |
| 235 } | |
| 236 | |
| 237 } | |
| 238 | |
| 239 /** | |
| 240 * Return the columns for the receiver. | |
| 241 * | |
| 242 * @param composite | |
| 243 * @return Item[] | |
| 244 */ | |
| 245 private Item[] getColumns(Composite composite) { | |
| 246 if (cast(Tree)composite ) { | |
| 247 return (cast(Tree) composite).getColumns(); | |
| 248 } | |
| 249 return (cast(Table) composite).getColumns(); | |
| 250 } | |
| 251 } |