Mercurial > projects > dwt2
view org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/Twistie.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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/******************************************************************************* * Copyright (c) 2000, 2005 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.ui.forms.widgets.Twistie; import org.eclipse.ui.forms.widgets.ToggleHyperlink; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.Composite; import java.lang.all; import java.util.Set; /** * A custom selectable control that can be used to control areas that can be * expanded or collapsed. The control control can be toggled between selected * and deselected state with a mouse or by pressing 'Enter' while the control * has focus. * <p> * The control is rendered as a triangle that points to the right in the * collapsed and down in the expanded state. Triangle color can be changed. * * @see TreeNode * @since 3.0 */ public class Twistie : ToggleHyperlink { private static const int[] onPoints = [ 0, 2, 8, 2, 4, 6 ]; private static const int[] offPoints = [ 2, -1, 2, 8, 6, 4 ]; /** * Creates a control in a provided composite. * * @param parent * the parent * @param style * the style */ public this(Composite parent, int style) { super(parent, style); innerWidth = 9; innerHeight = 9; } /* * @see SelectableControl#paint(GC) */ protected void paintHyperlink(GC gc) { Color bg; if (!isEnabled()) bg = getDisplay().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW); else if (hover && getHoverDecorationColor() !is null) bg = getHoverDecorationColor(); else if (getDecorationColor() !is null) bg = getDecorationColor(); else bg = getForeground(); gc.setBackground(bg); int[] data; Point size = getSize(); int x = (size.x - 9) / 2; int y = (size.y - 9) / 2; if (isExpanded()) data = translate(onPoints, x, y); else data = translate(offPoints, x, y); gc.fillPolygon(data); gc.setBackground(getBackground()); } private int[] translate(int[] data, int x, int y) { int[] target = new int[data.length]; for (int i = 0; i < data.length; i += 2) { target[i] = data[i] + x; } for (int i = 1; i < data.length; i += 2) { target[i] = data[i] + y; } return target; } /* * (non-Javadoc) * * @see org.eclipse.swt.widgets.Control#setEnabled(bool) */ public void setEnabled(bool enabled) { super.setEnabled(enabled); redraw(); } }