Mercurial > projects > dwt-addons
annotate dwtx/ui/internal/forms/widgets/Paragraph.d @ 94:dadb23ea55a6
Add version TANGOSVN
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 09 Jul 2008 23:23:56 +0200 |
| parents | 7ffeace6c47f |
| children | 1088ca33d3e0 |
| rev | line source |
|---|---|
| 75 | 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 | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.ui.internal.forms.widgets.Paragraph; | |
| 14 | |
| 15 import dwtx.ui.internal.forms.widgets.ParagraphSegment; | |
| 16 import dwtx.ui.internal.forms.widgets.Locator; | |
| 17 import dwtx.ui.internal.forms.widgets.IHyperlinkSegment; | |
| 18 import dwtx.ui.internal.forms.widgets.SelectionData; | |
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19 import dwtx.ui.internal.forms.widgets.TextSegment; |
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20 import dwtx.ui.internal.forms.widgets.TextHyperlinkSegment; |
| 75 | 21 |
| 22 import dwt.graphics.GC; | |
| 23 import dwt.graphics.Rectangle; | |
| 24 import dwtx.ui.forms.HyperlinkSettings; | |
| 25 | |
| 26 import dwt.dwthelper.utils; | |
| 27 import tango.util.collection.ArraySeq; | |
| 28 import tango.util.collection.HashMap; | |
| 94 | 29 version(TANGOSVN) { |
| 30 import tango.io.model.IFile; | |
| 31 } | |
| 32 else{ | |
| 33 import tango.io.FileConst; | |
| 34 } | |
| 35 | |
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36 import tango.text.Text; |
| 75 | 37 |
| 38 /** | |
| 39 * @version 1.0 | |
| 40 * @author | |
| 41 */ | |
| 42 public class Paragraph { | |
| 43 public static const String HTTP = "http://"; //$NON-NLS-1$ | |
| 44 | |
| 45 alias ArraySeq!(ParagraphSegment) TArraySeqParagraphSegment; | |
| 46 alias HashMap!(String,Object) Hashtable; | |
| 47 | |
| 48 private TArraySeqParagraphSegment segments; | |
| 49 | |
| 50 private bool addVerticalSpace = true; | |
| 51 | |
| 52 public this(bool addVerticalSpace) { | |
| 53 this.addVerticalSpace = addVerticalSpace; | |
| 54 } | |
| 55 | |
| 56 public int getIndent() { | |
| 57 return 0; | |
| 58 } | |
| 59 | |
| 60 public bool getAddVerticalSpace() { | |
| 61 return addVerticalSpace; | |
| 62 } | |
| 63 | |
| 64 /* | |
| 65 * @see IParagraph#getSegments() | |
| 66 */ | |
| 67 public ParagraphSegment[] getSegments() { | |
| 68 if (segments is null) | |
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69 return null; |
| 75 | 70 return segments |
| 71 .toArray(); | |
| 72 } | |
| 73 | |
| 74 public void addSegment(ParagraphSegment segment) { | |
| 75 if (segments is null) | |
| 76 segments = new TArraySeqParagraphSegment; | |
| 77 segments.append(segment); | |
| 78 } | |
| 79 | |
| 80 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed, | |
| 81 HyperlinkSettings settings, String fontId) { | |
| 82 parseRegularText(text, expandURLs, wrapAllowed, settings, fontId, null); | |
| 83 } | |
| 84 | |
| 85 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed, | |
| 86 HyperlinkSettings settings, String fontId, String colorId) { | |
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87 if (text.length is 0) |
| 75 | 88 return; |
| 89 if (expandURLs) { | |
| 90 int loc = text.indexOf(HTTP); | |
| 91 | |
| 92 if (loc is -1) | |
| 93 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed)); | |
| 94 else { | |
| 95 int textLoc = 0; | |
| 96 while (loc !is -1) { | |
| 97 addSegment(new TextSegment(text.substring(textLoc, loc), | |
| 98 fontId, colorId, wrapAllowed)); | |
| 99 bool added = false; | |
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100 for (textLoc = loc; textLoc < text.length; textLoc++) { |
| 75 | 101 char c = text.charAt(textLoc); |
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102 if (CharacterIsWhitespace(c)) { |
| 75 | 103 addHyperlinkSegment(text.substring(loc, textLoc), |
| 104 settings, fontId); | |
| 105 added = true; | |
| 106 break; | |
| 107 } | |
| 108 } | |
| 109 if (!added) { | |
| 110 // there was no space - just end of text | |
| 111 addHyperlinkSegment(text.substring(loc), settings, | |
| 112 fontId); | |
| 113 break; | |
| 114 } | |
| 115 loc = text.indexOf(HTTP, textLoc); | |
| 116 } | |
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117 if (textLoc < text.length) { |
| 75 | 118 addSegment(new TextSegment(text.substring(textLoc), fontId, |
| 119 colorId, wrapAllowed)); | |
| 120 } | |
| 121 } | |
| 122 } else { | |
| 123 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed)); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 private void addHyperlinkSegment(String text, HyperlinkSettings settings, | |
| 128 String fontId) { | |
| 129 TextHyperlinkSegment hs = new TextHyperlinkSegment(text, settings, | |
| 130 fontId); | |
| 131 hs.setWordWrapAllowed(false); | |
| 132 hs.setHref(text); | |
| 133 addSegment(hs); | |
| 134 } | |
| 135 | |
| 136 protected void computeRowHeights(GC gc, int width, Locator loc, | |
| 137 int lineHeight, Hashtable resourceTable) { | |
| 138 ParagraphSegment[] segments = getSegments(); | |
| 139 // compute heights | |
| 140 Locator hloc = loc.create(); | |
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141 ArraySeq!(ArrayWrapperInt) heights = new ArraySeq!(ArrayWrapperInt); |
| 75 | 142 hloc.heights = heights; |
| 143 hloc.rowCounter = 0; | |
| 144 int innerWidth = width - loc.marginWidth*2; | |
| 145 for (int j = 0; j < segments.length; j++) { | |
| 146 ParagraphSegment segment = segments[j]; | |
| 147 segment.advanceLocator(gc, innerWidth, hloc, resourceTable, true); | |
| 148 } | |
| 149 hloc.collectHeights(); | |
| 150 loc.heights = heights; | |
| 151 loc.rowCounter = 0; | |
| 152 } | |
| 153 | |
| 154 public void layout(GC gc, int width, Locator loc, int lineHeight, | |
| 155 Hashtable resourceTable, IHyperlinkSegment selectedLink) { | |
| 156 ParagraphSegment[] segments = getSegments(); | |
| 157 //int height; | |
| 158 if (segments.length > 0) { | |
| 159 /* | |
| 160 if (segments[0] instanceof TextSegment | |
| 161 && ((TextSegment) segments[0]).isSelectable()) | |
| 162 loc.x += 1; | |
| 163 */ | |
| 164 // compute heights | |
| 165 if (loc.heights is null) | |
| 166 computeRowHeights(gc, width, loc, lineHeight, resourceTable); | |
| 167 for (int j = 0; j < segments.length; j++) { | |
| 168 ParagraphSegment segment = segments[j]; | |
| 169 bool doSelect = false; | |
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170 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink)) |
| 75 | 171 doSelect = true; |
| 172 segment.layout(gc, width, loc, resourceTable, doSelect); | |
| 173 } | |
| 174 loc.heights = null; | |
| 175 loc.y += loc.rowHeight; | |
| 176 } else { | |
| 177 loc.y += lineHeight; | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 public void paint(GC gc, Rectangle repaintRegion, | |
| 182 Hashtable resourceTable, IHyperlinkSegment selectedLink, | |
| 183 SelectionData selData) { | |
| 184 ParagraphSegment[] segments = getSegments(); | |
| 185 | |
| 186 for (int i = 0; i < segments.length; i++) { | |
| 187 ParagraphSegment segment = segments[i]; | |
| 188 if (!segment.intersects(repaintRegion)) | |
| 189 continue; | |
| 190 bool doSelect = false; | |
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191 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink)) |
| 75 | 192 doSelect = true; |
| 193 segment.paint(gc, false, resourceTable, doSelect, selData, repaintRegion); | |
| 194 } | |
| 195 } | |
| 196 | |
| 197 public void computeSelection(GC gc, Hashtable resourceTable, IHyperlinkSegment selectedLink, | |
| 198 SelectionData selData) { | |
| 199 ParagraphSegment[] segments = getSegments(); | |
| 200 | |
| 201 for (int i = 0; i < segments.length; i++) { | |
| 202 ParagraphSegment segment = segments[i]; | |
| 203 //bool doSelect = false; | |
| 204 //if (selectedLink !is null && segment.equals(selectedLink)) | |
| 205 //doSelect = true; | |
| 206 segment.computeSelection(gc, resourceTable, selData); | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 public String getAccessibleText() { | |
| 211 ParagraphSegment[] segments = getSegments(); | |
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212 auto txt = new tango.text.Text.Text!(char); |
| 75 | 213 for (int i = 0; i < segments.length; i++) { |
| 214 ParagraphSegment segment = segments[i]; | |
| 215 if ( auto ts = cast(TextSegment)segment ) { | |
| 216 String text = ts.getText(); | |
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217 txt.append(text); |
| 75 | 218 } |
| 219 } | |
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220 txt.append( FileConst.NewlineString ); |
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221 return txt.toString(); |
| 75 | 222 } |
| 223 | |
| 224 public ParagraphSegment findSegmentAt(int x, int y) { | |
| 225 if (segments !is null) { | |
| 226 for (int i = 0; i < segments.size(); i++) { | |
| 227 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i); | |
| 228 if (segment.contains(x, y)) | |
| 229 return segment; | |
| 230 } | |
| 231 } | |
| 232 return null; | |
| 233 } | |
| 234 public void clearCache(String fontId) { | |
| 235 if (segments !is null) { | |
| 236 for (int i = 0; i < segments.size(); i++) { | |
| 237 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i); | |
| 238 segment.clearCache(fontId); | |
| 239 } | |
| 240 } | |
| 241 } | |
| 242 } |