Mercurial > projects > dwt-addons
annotate dwtx/ui/internal/forms/widgets/Paragraph.d @ 90:7ffeace6c47f
Update 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 06 Jul 2008 23:30:07 +0200 |
| parents | 26c6c9dfd13c |
| children | dadb23ea55a6 |
| 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; | |
| 90 | 29 import tango.io.model.IFile; |
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30 import tango.text.Text; |
| 75 | 31 |
| 32 /** | |
| 33 * @version 1.0 | |
| 34 * @author | |
| 35 */ | |
| 36 public class Paragraph { | |
| 37 public static const String HTTP = "http://"; //$NON-NLS-1$ | |
| 38 | |
| 39 alias ArraySeq!(ParagraphSegment) TArraySeqParagraphSegment; | |
| 40 alias HashMap!(String,Object) Hashtable; | |
| 41 | |
| 42 private TArraySeqParagraphSegment segments; | |
| 43 | |
| 44 private bool addVerticalSpace = true; | |
| 45 | |
| 46 public this(bool addVerticalSpace) { | |
| 47 this.addVerticalSpace = addVerticalSpace; | |
| 48 } | |
| 49 | |
| 50 public int getIndent() { | |
| 51 return 0; | |
| 52 } | |
| 53 | |
| 54 public bool getAddVerticalSpace() { | |
| 55 return addVerticalSpace; | |
| 56 } | |
| 57 | |
| 58 /* | |
| 59 * @see IParagraph#getSegments() | |
| 60 */ | |
| 61 public ParagraphSegment[] getSegments() { | |
| 62 if (segments is null) | |
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63 return null; |
| 75 | 64 return segments |
| 65 .toArray(); | |
| 66 } | |
| 67 | |
| 68 public void addSegment(ParagraphSegment segment) { | |
| 69 if (segments is null) | |
| 70 segments = new TArraySeqParagraphSegment; | |
| 71 segments.append(segment); | |
| 72 } | |
| 73 | |
| 74 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed, | |
| 75 HyperlinkSettings settings, String fontId) { | |
| 76 parseRegularText(text, expandURLs, wrapAllowed, settings, fontId, null); | |
| 77 } | |
| 78 | |
| 79 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed, | |
| 80 HyperlinkSettings settings, String fontId, String colorId) { | |
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81 if (text.length is 0) |
| 75 | 82 return; |
| 83 if (expandURLs) { | |
| 84 int loc = text.indexOf(HTTP); | |
| 85 | |
| 86 if (loc is -1) | |
| 87 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed)); | |
| 88 else { | |
| 89 int textLoc = 0; | |
| 90 while (loc !is -1) { | |
| 91 addSegment(new TextSegment(text.substring(textLoc, loc), | |
| 92 fontId, colorId, wrapAllowed)); | |
| 93 bool added = false; | |
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94 for (textLoc = loc; textLoc < text.length; textLoc++) { |
| 75 | 95 char c = text.charAt(textLoc); |
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96 if (CharacterIsWhitespace(c)) { |
| 75 | 97 addHyperlinkSegment(text.substring(loc, textLoc), |
| 98 settings, fontId); | |
| 99 added = true; | |
| 100 break; | |
| 101 } | |
| 102 } | |
| 103 if (!added) { | |
| 104 // there was no space - just end of text | |
| 105 addHyperlinkSegment(text.substring(loc), settings, | |
| 106 fontId); | |
| 107 break; | |
| 108 } | |
| 109 loc = text.indexOf(HTTP, textLoc); | |
| 110 } | |
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111 if (textLoc < text.length) { |
| 75 | 112 addSegment(new TextSegment(text.substring(textLoc), fontId, |
| 113 colorId, wrapAllowed)); | |
| 114 } | |
| 115 } | |
| 116 } else { | |
| 117 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed)); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 private void addHyperlinkSegment(String text, HyperlinkSettings settings, | |
| 122 String fontId) { | |
| 123 TextHyperlinkSegment hs = new TextHyperlinkSegment(text, settings, | |
| 124 fontId); | |
| 125 hs.setWordWrapAllowed(false); | |
| 126 hs.setHref(text); | |
| 127 addSegment(hs); | |
| 128 } | |
| 129 | |
| 130 protected void computeRowHeights(GC gc, int width, Locator loc, | |
| 131 int lineHeight, Hashtable resourceTable) { | |
| 132 ParagraphSegment[] segments = getSegments(); | |
| 133 // compute heights | |
| 134 Locator hloc = loc.create(); | |
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135 ArraySeq!(ArrayWrapperInt) heights = new ArraySeq!(ArrayWrapperInt); |
| 75 | 136 hloc.heights = heights; |
| 137 hloc.rowCounter = 0; | |
| 138 int innerWidth = width - loc.marginWidth*2; | |
| 139 for (int j = 0; j < segments.length; j++) { | |
| 140 ParagraphSegment segment = segments[j]; | |
| 141 segment.advanceLocator(gc, innerWidth, hloc, resourceTable, true); | |
| 142 } | |
| 143 hloc.collectHeights(); | |
| 144 loc.heights = heights; | |
| 145 loc.rowCounter = 0; | |
| 146 } | |
| 147 | |
| 148 public void layout(GC gc, int width, Locator loc, int lineHeight, | |
| 149 Hashtable resourceTable, IHyperlinkSegment selectedLink) { | |
| 150 ParagraphSegment[] segments = getSegments(); | |
| 151 //int height; | |
| 152 if (segments.length > 0) { | |
| 153 /* | |
| 154 if (segments[0] instanceof TextSegment | |
| 155 && ((TextSegment) segments[0]).isSelectable()) | |
| 156 loc.x += 1; | |
| 157 */ | |
| 158 // compute heights | |
| 159 if (loc.heights is null) | |
| 160 computeRowHeights(gc, width, loc, lineHeight, resourceTable); | |
| 161 for (int j = 0; j < segments.length; j++) { | |
| 162 ParagraphSegment segment = segments[j]; | |
| 163 bool doSelect = false; | |
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164 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink)) |
| 75 | 165 doSelect = true; |
| 166 segment.layout(gc, width, loc, resourceTable, doSelect); | |
| 167 } | |
| 168 loc.heights = null; | |
| 169 loc.y += loc.rowHeight; | |
| 170 } else { | |
| 171 loc.y += lineHeight; | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 public void paint(GC gc, Rectangle repaintRegion, | |
| 176 Hashtable resourceTable, IHyperlinkSegment selectedLink, | |
| 177 SelectionData selData) { | |
| 178 ParagraphSegment[] segments = getSegments(); | |
| 179 | |
| 180 for (int i = 0; i < segments.length; i++) { | |
| 181 ParagraphSegment segment = segments[i]; | |
| 182 if (!segment.intersects(repaintRegion)) | |
| 183 continue; | |
| 184 bool doSelect = false; | |
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185 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink)) |
| 75 | 186 doSelect = true; |
| 187 segment.paint(gc, false, resourceTable, doSelect, selData, repaintRegion); | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 public void computeSelection(GC gc, Hashtable resourceTable, IHyperlinkSegment selectedLink, | |
| 192 SelectionData selData) { | |
| 193 ParagraphSegment[] segments = getSegments(); | |
| 194 | |
| 195 for (int i = 0; i < segments.length; i++) { | |
| 196 ParagraphSegment segment = segments[i]; | |
| 197 //bool doSelect = false; | |
| 198 //if (selectedLink !is null && segment.equals(selectedLink)) | |
| 199 //doSelect = true; | |
| 200 segment.computeSelection(gc, resourceTable, selData); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 public String getAccessibleText() { | |
| 205 ParagraphSegment[] segments = getSegments(); | |
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206 auto txt = new tango.text.Text.Text!(char); |
| 75 | 207 for (int i = 0; i < segments.length; i++) { |
| 208 ParagraphSegment segment = segments[i]; | |
| 209 if ( auto ts = cast(TextSegment)segment ) { | |
| 210 String text = ts.getText(); | |
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211 txt.append(text); |
| 75 | 212 } |
| 213 } | |
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214 txt.append( FileConst.NewlineString ); |
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215 return txt.toString(); |
| 75 | 216 } |
| 217 | |
| 218 public ParagraphSegment findSegmentAt(int x, int y) { | |
| 219 if (segments !is null) { | |
| 220 for (int i = 0; i < segments.size(); i++) { | |
| 221 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i); | |
| 222 if (segment.contains(x, y)) | |
| 223 return segment; | |
| 224 } | |
| 225 } | |
| 226 return null; | |
| 227 } | |
| 228 public void clearCache(String fontId) { | |
| 229 if (segments !is null) { | |
| 230 for (int i = 0; i < segments.size(); i++) { | |
| 231 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i); | |
| 232 segment.clearCache(fontId); | |
| 233 } | |
| 234 } | |
| 235 } | |
| 236 } |