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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.ui.internal.forms.widgets.ParagraphSegment;
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14
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15 import dwtx.ui.internal.forms.widgets.Locator;
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16 import dwtx.ui.internal.forms.widgets.SelectionData;
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17
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18 import dwt.graphics.GC;
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19 import dwt.graphics.Rectangle;
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20
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21 import dwt.dwthelper.utils;
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22
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23 import tango.util.collection.HashMap;
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24
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25 /**
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26 * @version 1.0
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27 * @author
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28 */
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29 public abstract class ParagraphSegment {
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30
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31 alias HashMap!(String,Object) Hashtable;
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32 /**
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33 * Moves the locator according to the content of this segment.
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34 * @param gc
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35 * @param wHint
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36 * @param loc
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37 * @param objectTable
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38 * @param computeHeightOnly
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39 * @return <code>true</code> if text wrapped to the new line, <code>false</code> otherwise.
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40 */
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41 public abstract bool advanceLocator(GC gc, int wHint, Locator loc, Hashtable objectTable, bool computeHeightOnly);
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42 /**
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43 * Computes bounding rectangles and row heights of this segments.
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44 * @param gc
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45 * @param width
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46 * @param loc
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47 * @param resourceTable
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48 * @param selected
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49 */
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50 public abstract void layout(GC gc, int width, Locator loc, Hashtable resourceTable, bool selected);
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51 /**
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52 * Paints this segment.
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53 * @param gc
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54 * @param hover
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55 * @param resourceTable
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56 * @param selected
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57 * @param selData
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58 * @param region
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59 */
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60 public abstract void paint(GC gc, bool hover, Hashtable resourceTable, bool selected, SelectionData selData, Rectangle region);
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61 /**
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62 * Paints this segment.
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63 * @param gc
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64 * @param resourceTable
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65 * @param selData
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66 */
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67 public abstract void computeSelection(GC gc, Hashtable resourceTable, SelectionData selData);
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68 /**
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69 * Tests if the coordinates are contained in one of the
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70 * bounding rectangles of this segment.
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71 * @param x
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72 * @param y
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73 * @return true if inside the bounding rectangle, false otherwise.
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74 */
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75 public abstract bool contains(int x, int y);
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76 /**
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77 * Tests if the source rectangle intersects with
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78 * one of the bounding rectangles of this segment.
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79 * @param rect
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80 * @return true if the two rectangles intersect, false otherwise.
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81 */
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82 public abstract bool intersects(Rectangle rect);
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83 /**
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84 * Returns the tool tip of this segment or <code>null</code>
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85 * if not defined.
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86 * @return tooltip or <code>null</code>.
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87 */
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88 public String getTooltipText() {
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89 return null;
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90 }
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91 /**
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92 * Clears the text metrics cache for the provided font id.
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93 * @param fontId the id of the font that the cache is kept for.
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94 *
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95 */
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96 public void clearCache(String fontId) {
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97 }
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98 }
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