| /******************************************************************************* |
| * Copyright (c) 2007 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 |
| ******************************************************************************/ |
| package org.eclipse.ui.internal; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.PaintEvent; |
| import org.eclipse.swt.events.PaintListener; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.RGB; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Canvas; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.CoolBar; |
| import org.eclipse.swt.widgets.Layout; |
| import org.eclipse.swt.widgets.ToolBar; |
| import org.eclipse.ui.themes.ColorUtil; |
| |
| /** |
| * Draws a styled frame around its contained controls. |
| * This class is intended to be used to wrap various |
| * trim elements that appear in the workbench. |
| * |
| * Currently this class expects a <b>single</b> child |
| * control. |
| * |
| * @since 3.3 |
| * |
| */ |
| public class TrimFrame { |
| private static int blend = 40; |
| |
| Canvas canvas = null; |
| |
| public TrimFrame(Composite parent) { |
| createControl(parent); |
| } |
| |
| private void createControl(Composite parent) { |
| dispose(); |
| canvas = new Canvas(parent, SWT.NONE); |
| canvas.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND)); |
| |
| // paint the border |
| canvas.addPaintListener(new PaintListener() { |
| private void drawLine (GC gc, int x1, int y1, int x2, int y2, boolean flipXY) { |
| if (flipXY) { |
| int tmp = x1; |
| x1 = y1; |
| y1 = tmp; |
| tmp = x2; |
| x2 = y2; |
| y2 = tmp; |
| } |
| |
| gc.drawLine(x1, y1, x2, y2); |
| } |
| |
| public void paintControl(PaintEvent e) { |
| Canvas canvas = (Canvas)e.widget; |
| Control child = canvas.getChildren ()[0]; |
| |
| // Are we horizontally or vertically aligned |
| boolean flipXY = false; |
| if (child instanceof ToolBar && (((ToolBar)child).getStyle() & SWT.VERTICAL) != 0) |
| flipXY = true; |
| else if (child instanceof CoolBar && (((CoolBar)child).getStyle() & SWT.VERTICAL) != 0) |
| flipXY = true; |
| |
| Rectangle bb = canvas.getBounds(); |
| int maxX = bb.width-1; |
| int maxY = bb.height-1; |
| |
| if (flipXY) { |
| int tmp = maxX; |
| maxX = maxY; |
| maxY = tmp; |
| } |
| |
| Color white = e.gc.getDevice ().getSystemColor(SWT.COLOR_WHITE); |
| Color shadow = e.gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW); |
| RGB outerRGB = ColorUtil.blend(white.getRGB(), shadow.getRGB(), blend); |
| Color outerColor = new Color(e.gc.getDevice(), outerRGB); |
| |
| // Draw the 'outer' bits |
| e.gc.setForeground(outerColor); |
| |
| // Top Line and curve |
| drawLine(e.gc, 1, 0, maxX-5, 0, flipXY); |
| drawLine(e.gc, maxX-4, 1, maxX-3, 1, flipXY); |
| drawLine(e.gc, maxX-2, 2, maxX-2, 2, flipXY); |
| drawLine(e.gc, maxX-1, 3, maxX-1, 4, flipXY); |
| |
| // Bottom line and curve |
| drawLine(e.gc, 1, maxY, maxX-5, maxY, flipXY); |
| drawLine( e.gc, maxX-4, maxY-1, maxX-3, maxY-1, flipXY); |
| drawLine(e.gc, maxX-2, maxY-2, maxX-2, maxY-2, flipXY); |
| drawLine(e.gc, maxX-1, maxY-3, maxX-1, maxY-4, flipXY); |
| |
| // Left & Right edges |
| drawLine(e.gc, 0, 1, 0, maxY-1, flipXY); |
| drawLine(e.gc, maxX, 5, maxX, maxY-5, flipXY); |
| |
| // Dispose the color since we created it... |
| outerColor.dispose(); |
| |
| // Draw the 'inner' curve |
| e.gc.setForeground (white); |
| |
| drawLine(e.gc, 1, 1, maxX-5, 1, flipXY); |
| drawLine(e.gc, maxX-4, 2, maxX-3, 2, flipXY); |
| drawLine(e.gc, maxX-3, 3, maxX-2, 3, flipXY); |
| drawLine( e.gc, maxX-2, 4, maxX-2, 4, flipXY); |
| |
| drawLine(e.gc, 1, maxY-1, maxX-5, maxY-1, flipXY); |
| drawLine(e.gc, maxX-4, maxY-2, maxX-3, maxY-2, flipXY); |
| drawLine( e.gc, maxX-3, maxY-3, maxX-2, maxY-3, flipXY); |
| drawLine(e.gc, maxX-2, maxY-4, maxX-2, maxY-4, flipXY); |
| |
| // Left and Right sides |
| drawLine(e.gc, 1, 1, 1, maxY-1, flipXY); |
| drawLine(e.gc, maxX-1, 5, maxX-1, maxY-5, flipXY); |
| } |
| }); |
| |
| // provide a layout that provides enough extra space to |
| // draw the border and to place the child conrol in the |
| // correct location |
| canvas.setLayout(new Layout() { |
| |
| protected Point computeSize(Composite composite, int wHint, |
| int hHint, boolean changed) { |
| Control[] children = composite.getChildren(); |
| |
| if (children.length == 0) |
| return new Point(0,0); |
| |
| Point innerSize = children[0].computeSize(hHint, wHint, changed); |
| innerSize.x += 4; |
| innerSize.y += 4; |
| |
| Control child = children[0]; |
| if (child instanceof CoolBar && (((CoolBar)child).getStyle() & SWT.VERTICAL) != 0) |
| innerSize.y += 3; |
| else |
| innerSize.x += 3; |
| |
| return innerSize; |
| } |
| |
| protected void layout(Composite composite, boolean flushCache) { |
| Control[] children = composite.getChildren(); |
| if (children.length == 0) |
| return; |
| |
| children[0].setLocation(2, 2); |
| } |
| }); |
| } |
| |
| /** |
| * Dispose the frame |
| */ |
| private void dispose() { |
| if (canvas != null && !canvas.isDisposed()) |
| canvas.dispose(); |
| } |
| |
| /** |
| * @return The border canvas |
| */ |
| public Composite getComposite() { |
| return canvas; |
| } |
| } |
| |