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annotate dwt/custom/CTabFolderLayout.d @ 13:f565d3a95c0a

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Ported dwt.internal
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Fri, 22 Aug 2008 16:46:34 +0200
parents 380af2bdd8e5
children 6337764516f1
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 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 *
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f565d3a95c0a Ported dwt.internal
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11 * Port to the D programming language:
0
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12 * Jacob Carlborg <jacob.carlborg@gmail.com>
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13 *******************************************************************************/
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14 module dwt.custom.CTabFolderLayout;
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16 import Math = tango.math.Math;
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18 import dwt.DWT;
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19 import dwt.custom.CTabFolder;
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20 import dwt.custom.CTabItem;
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21 import dwt.graphics.GC;
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22 import dwt.graphics.Point;
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23 import dwt.widgets.Composite;
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24 import dwt.widgets.Control;
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25 import dwt.widgets.Layout;
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26
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27 /**
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28 * This class provides the layout for CTabFolder
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29 *
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30 * @see CTabFolder
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31 */
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32 class CTabFolderLayout : Layout {
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33 protected Point computeSize (Composite composite, int wHint, int hHint, bool flushCache) {
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34 CTabFolder folder = cast(CTabFolder) composite;
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35 CTabItem[] items = folder.items;
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36 // preferred width of tab area to show all tabs
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37 int tabW = 0;
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38 GC gc = new GC(folder);
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39 for (int i = 0; i < items.length; i++) {
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40 if (folder.single) {
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41 tabW = Math.max(tabW, items[i].preferredWidth(gc, true, false));
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42 }
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43 else {
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44 tabW += items[i].preferredWidth(gc, i is folder.selectedIndex, false);
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45 }
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46 }
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47 gc.dispose();
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48 tabW += 3;
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49 if (folder.showMax)
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50 tabW += CTabFolder.BUTTON_SIZE;
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51 if (folder.showMin)
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52 tabW += CTabFolder.BUTTON_SIZE;
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53 if (folder.single)
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54 tabW += 3 * CTabFolder.BUTTON_SIZE / 2; //chevron
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55 if (folder.topRight !is null) {
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56 Point pt = folder.topRight.computeSize(DWT.DEFAULT, folder.tabHeight, flushCache);
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57 tabW += 3 + pt.x;
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58 }
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59 if (!folder.single && !folder.simple)
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60 tabW += folder.curveWidth - 2 * folder.curveIndent;
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61
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62 int controlW = 0;
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63 int controlH = 0;
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64 // preferred size of controls in tab items
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65 for (int i = 0; i < items.length; i++) {
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66 Control control = items[i].getControl();
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67 if (control !is null && !control.isDisposed()) {
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68 Point size = control.computeSize(wHint, hHint, flushCache);
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69 controlW = Math.max(controlW, size.x);
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70 controlH = Math.max(controlH, size.y);
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71 }
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72 }
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73
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74 int minWidth = Math.max(tabW, controlW);
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75 int minHeight = (folder.minimized) ? 0 : controlH;
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76 if (minWidth is 0)
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77 minWidth = CTabFolder.DEFAULT_WIDTH;
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78 if (minHeight is 0)
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79 minHeight = CTabFolder.DEFAULT_HEIGHT;
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80
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81 if (wHint !is DWT.DEFAULT)
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82 minWidth = wHint;
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83 if (hHint !is DWT.DEFAULT)
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84 minHeight = hHint;
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85
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86 return new Point(minWidth, minHeight);
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87 }
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88
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89 protected bool flushCache (Control control) {
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90 return true;
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91 }
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92
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93 protected void layout (Composite composite, bool flushCache) {
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94 CTabFolder folder = cast(CTabFolder) composite;
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95 // resize content
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96 if (folder.selectedIndex !is -1) {
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97 Control control = folder.items[folder.selectedIndex].getControl();
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98 if (control !is null && !control.isDisposed()) {
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99 control.setBounds(folder.getClientArea());
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100 }
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101 }
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102 }
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103 }