| /* |
| * Copyright (c) 2014-2016 Eike Stepper (Loehne, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.oomph.ui; |
| |
| import org.eclipse.swt.SWTException; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.ToolItem; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public abstract class ButtonAnimator implements Runnable |
| { |
| private final OomphUIPlugin plugin; |
| |
| private final ToolItem button; |
| |
| private final String imagePrefix; |
| |
| protected final int additionalImages; |
| |
| private final boolean rotate; |
| |
| private int index; |
| |
| private boolean backward; |
| |
| protected Image[] images; |
| |
| public ButtonAnimator(OomphUIPlugin plugin, ToolItem button, String imagePrefix, int additionalImages) |
| { |
| this(plugin, button, imagePrefix, additionalImages, false); |
| } |
| |
| public ButtonAnimator(OomphUIPlugin plugin, ToolItem button, String imagePrefix, int additionalImages, boolean rotate) |
| { |
| this.plugin = plugin; |
| this.button = button; |
| this.imagePrefix = imagePrefix; |
| this.additionalImages = additionalImages; |
| this.rotate = rotate; |
| } |
| |
| public ToolItem getButton() |
| { |
| return button; |
| } |
| |
| public void run() |
| { |
| Shell shell = getShell(); |
| if (!button.isDisposed() && shell != null && !shell.isDisposed()) |
| { |
| try |
| { |
| if (images == null) |
| { |
| initImages(); |
| } |
| |
| if (shouldAnimate()) |
| { |
| button.setImage(images[Math.max(0, index)]); |
| |
| if (backward) |
| { |
| if (--index == -getQuietCycles()) |
| { |
| backward = false; |
| } |
| } |
| else |
| { |
| if (++index == images.length) |
| { |
| if (rotate) |
| { |
| index = -getQuietCycles(); |
| } |
| else |
| { |
| index = images.length - 2; |
| backward = true; |
| } |
| } |
| } |
| |
| shell.getDisplay().timerExec(rotate ? 80 : 40, this); |
| } |
| else |
| { |
| index = 0; |
| backward = false; |
| button.setImage(images[index]); |
| } |
| } |
| catch (SWTException ex) |
| { |
| if (!button.isDisposed()) |
| { |
| throw ex; |
| } |
| } |
| } |
| } |
| |
| protected int getQuietCycles() |
| { |
| if (rotate) |
| { |
| return 8; |
| } |
| |
| return 10; |
| } |
| |
| public abstract Shell getShell(); |
| |
| public final boolean shouldAnimate() |
| { |
| return button != null && !button.isDisposed() && button.isEnabled() && doAnimate(); |
| } |
| |
| protected abstract boolean doAnimate(); |
| |
| private void initImages() |
| { |
| images = new Image[1 + additionalImages]; |
| images[0] = button.getImage(); |
| |
| String prefix = imagePrefix; |
| String suffix = ""; |
| if (imagePrefix.endsWith(".png")) |
| { |
| prefix = prefix.substring(0, prefix.length() - 4); |
| suffix = ".png"; |
| } |
| |
| for (int i = 0; i < images.length - 1; i++) |
| { |
| images[i + 1] = plugin.getSWTImage(prefix + i + suffix); |
| } |
| } |
| } |