| /******************************************************************************* |
| * Copyright (c) 2000, 2009 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.swt.custom; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * This class provides the layout for SashForm |
| * |
| * @see SashForm |
| */ |
| class SashFormLayout extends Layout { |
| protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) { |
| SashForm sashForm = (SashForm)composite; |
| Control[] cArray = sashForm.getControls(true); |
| int width = 0; |
| int height = 0; |
| if (cArray.length == 0) { |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point(width, height); |
| } |
| // determine control sizes |
| boolean vertical = sashForm.getOrientation() == SWT.VERTICAL; |
| int maxIndex = 0; |
| int maxValue = 0; |
| for (int i = 0; i < cArray.length; i++) { |
| if (vertical) { |
| Point size = cArray[i].computeSize(wHint, SWT.DEFAULT, flushCache); |
| if (size.y > maxValue) { |
| maxIndex = i; |
| maxValue = size.y; |
| } |
| width = Math.max(width, size.x); |
| } else { |
| Point size = cArray[i].computeSize(SWT.DEFAULT, hHint, flushCache); |
| if (size.x > maxValue) { |
| maxIndex = i; |
| maxValue = size.x; |
| } |
| height = Math.max(height, size.y); |
| } |
| } |
| // get the ratios |
| long[] ratios = new long[cArray.length]; |
| long total = 0; |
| for (int i = 0; i < cArray.length; i++) { |
| Object data = cArray[i].getLayoutData(); |
| if (data != null && data instanceof SashFormData) { |
| ratios[i] = ((SashFormData)data).weight; |
| } else { |
| data = new SashFormData(); |
| cArray[i].setLayoutData(data); |
| ((SashFormData)data).weight = ratios[i] = ((200 << 16) + 999) / 1000; |
| |
| } |
| total += ratios[i]; |
| } |
| if (ratios[maxIndex] > 0) { |
| int sashwidth = sashForm.sashes.length > 0 ? sashForm.SASH_WIDTH + sashForm.sashes [0].getBorderWidth() * 2 : sashForm.SASH_WIDTH; |
| if (vertical) { |
| height += (int)(total * maxValue / ratios[maxIndex]) + (cArray.length - 1) * sashwidth; |
| } else { |
| width += (int)(total * maxValue / ratios[maxIndex]) + (cArray.length - 1) * sashwidth; |
| } |
| } |
| width += sashForm.getBorderWidth()*2; |
| height += sashForm.getBorderWidth()*2; |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point(width, height); |
| } |
| |
| protected boolean flushCache(Control control) { |
| return true; |
| } |
| |
| protected void layout(Composite composite, boolean flushCache) { |
| SashForm sashForm = (SashForm)composite; |
| Rectangle area = sashForm.getClientArea(); |
| if (area.width <= 1 || area.height <= 1) return; |
| |
| Control[] newControls = sashForm.getControls(true); |
| if (sashForm.controls.length == 0 && newControls.length == 0) return; |
| sashForm.controls = newControls; |
| |
| Control[] controls = sashForm.controls; |
| |
| if (sashForm.maxControl != null && !sashForm.maxControl.isDisposed()) { |
| for (int i= 0; i < controls.length; i++){ |
| if (controls[i] != sashForm.maxControl) { |
| controls[i].setBounds(-200, -200, 0, 0); |
| } else { |
| controls[i].setBounds(area); |
| } |
| } |
| return; |
| } |
| |
| // keep just the right number of sashes |
| if (sashForm.sashes.length < controls.length - 1) { |
| Sash[] newSashes = new Sash[controls.length - 1]; |
| System.arraycopy(sashForm.sashes, 0, newSashes, 0, sashForm.sashes.length); |
| for (int i = sashForm.sashes.length; i < newSashes.length; i++) { |
| newSashes[i] = sashForm.createSash(); |
| } |
| sashForm.sashes = newSashes; |
| } |
| if (sashForm.sashes.length > controls.length - 1) { |
| if (controls.length == 0) { |
| for (int i = 0; i < sashForm.sashes.length; i++) { |
| sashForm.sashes[i].dispose(); |
| } |
| sashForm.sashes = new Sash[0]; |
| } else { |
| Sash[] newSashes = new Sash[controls.length - 1]; |
| System.arraycopy(sashForm.sashes, 0, newSashes, 0, newSashes.length); |
| for (int i = controls.length - 1; i < sashForm.sashes.length; i++) { |
| sashForm.sashes[i].dispose(); |
| } |
| sashForm.sashes = newSashes; |
| } |
| } |
| if (controls.length == 0) return; |
| Sash[] sashes = sashForm.sashes; |
| // get the ratios |
| long[] ratios = new long[controls.length]; |
| long total = 0; |
| for (int i = 0; i < controls.length; i++) { |
| Object data = controls[i].getLayoutData(); |
| if (data != null && data instanceof SashFormData) { |
| ratios[i] = ((SashFormData)data).weight; |
| } else { |
| data = new SashFormData(); |
| controls[i].setLayoutData(data); |
| ((SashFormData)data).weight = ratios[i] = ((200 << 16) + 999) / 1000; |
| |
| } |
| total += ratios[i]; |
| } |
| |
| int sashwidth = sashes.length > 0 ? sashForm.SASH_WIDTH + sashes [0].getBorderWidth() * 2 : sashForm.SASH_WIDTH; |
| if (sashForm.getOrientation() == SWT.HORIZONTAL) { |
| int width = (int)(ratios[0] * (area.width - sashes.length * sashwidth) / total); |
| int x = area.x; |
| controls[0].setBounds(x, area.y, width, area.height); |
| x += width; |
| for (int i = 1; i < controls.length - 1; i++) { |
| sashes[i - 1].setBounds(x, area.y, sashwidth, area.height); |
| x += sashwidth; |
| width = (int)(ratios[i] * (area.width - sashes.length * sashwidth) / total); |
| controls[i].setBounds(x, area.y, width, area.height); |
| x += width; |
| } |
| if (controls.length > 1) { |
| sashes[sashes.length - 1].setBounds(x, area.y, sashwidth, area.height); |
| x += sashwidth; |
| width = area.width - x; |
| controls[controls.length - 1].setBounds(x, area.y, width, area.height); |
| } |
| } else { |
| int height = (int)(ratios[0] * (area.height - sashes.length * sashwidth) / total); |
| int y = area.y; |
| controls[0].setBounds(area.x, y, area.width, height); |
| y += height; |
| for (int i = 1; i < controls.length - 1; i++) { |
| sashes[i - 1].setBounds(area.x, y, area.width, sashwidth); |
| y += sashwidth; |
| height = (int)(ratios[i] * (area.height - sashes.length * sashwidth) / total); |
| controls[i].setBounds(area.x, y, area.width, height); |
| y += height; |
| } |
| if (controls.length > 1) { |
| sashes[sashes.length - 1].setBounds(area.x, y, area.width, sashwidth); |
| y += sashwidth; |
| height = area.height - y; |
| controls[controls.length - 1].setBounds(area.x, y, area.width, height); |
| } |
| |
| } |
| } |
| } |