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annotate dwt/custom/CTabFolderLayout.d @ 152:17f8449522fd

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overloads second walkthrough
author Frank Benoit <benoit@tionex.de>
date Thu, 31 Jan 2008 23:19:20 +0100
parents 0f12f6bb9739
children 96b14a31d9b3
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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 * 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 dwt.custom.CTabFolderLayout;
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14
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15
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16 import dwt.DWT;
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17 import dwt.graphics.GC;
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18 import dwt.graphics.Point;
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19 import dwt.widgets.Composite;
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20 import dwt.widgets.Control;
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21 import dwt.widgets.Layout;
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22 import dwt.custom.CTabFolder;
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23 import dwt.custom.CTabItem;
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24
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25 /**
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26 * This class provides the layout for CTabFolder
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27 *
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28 * @see CTabFolder
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29 */
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30 class CTabFolderLayout : Layout {
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31 protected override Point computeSize(Composite composite, int wHint, int hHint, bool flushCache) {
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32 CTabFolder folder = cast(CTabFolder)composite;
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33 CTabItem[] items = folder.items;
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34 // preferred width of tab area to show all tabs
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35 int tabW = 0;
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36 GC gc = new GC(folder);
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37 for (int i = 0; i < items.length; i++) {
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38 if (folder.single) {
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39 tabW = Math.max(tabW, items[i].preferredWidth(gc, true, false));
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40 } else {
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41 tabW += items[i].preferredWidth(gc, i is folder.selectedIndex, false);
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42 }
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43 }
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44 gc.dispose();
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45 tabW += 3;
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46 if (folder.showMax) tabW += CTabFolder.BUTTON_SIZE;
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47 if (folder.showMin) tabW += CTabFolder.BUTTON_SIZE;
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48 if (folder.single) tabW += 3*CTabFolder.BUTTON_SIZE/2; //chevron
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49 if (folder.topRight !is null) {
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50 Point pt = folder.topRight.computeSize(DWT.DEFAULT, folder.tabHeight, flushCache);
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51 tabW += 3 + pt.x;
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52 }
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53 if (!folder.single && !folder.simple) tabW += folder.curveWidth - 2*folder.curveIndent;
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54
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55 int controlW = 0;
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56 int controlH = 0;
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57 // preferred size of controls in tab items
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58 for (int i = 0; i < items.length; i++) {
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59 Control control = items[i].getControl();
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60 if (control !is null && !control.isDisposed()){
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61 Point size = control.computeSize (wHint, hHint, flushCache);
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62 controlW = Math.max (controlW, size.x);
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63 controlH = Math.max (controlH, size.y);
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64 }
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65 }
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66
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67 int minWidth = Math.max(tabW, controlW);
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68 int minHeight = (folder.minimized) ? 0 : controlH;
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69 if (minWidth is 0) minWidth = CTabFolder.DEFAULT_WIDTH;
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70 if (minHeight is 0) minHeight = CTabFolder.DEFAULT_HEIGHT;
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71
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72 if (wHint !is DWT.DEFAULT) minWidth = wHint;
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73 if (hHint !is DWT.DEFAULT) minHeight = hHint;
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74
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75 return new Point (minWidth, minHeight);
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76 }
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77 protected override bool flushCache(Control control) {
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78 return true;
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79 }
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80 protected override void layout(Composite composite, bool flushCache) {
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81 CTabFolder folder = cast(CTabFolder)composite;
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82 // resize content
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83 if (folder.selectedIndex !is -1) {
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84 Control control = folder.items[folder.selectedIndex].getControl();
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85 if (control !is null && !control.isDisposed()) {
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86 control.setBounds(folder.getClientArea());
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87 }
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88 }
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89 }
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90 }