| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.draw2d; |
| |
| import org.eclipse.swt.graphics.Color; |
| |
| import org.eclipse.draw2d.geometry.Insets; |
| |
| /** |
| * Creates a border for a clickable type of figure, which works in conjunction |
| * with the Figure and its model. This border adjusts itself to the various |
| * states the model of the figure could be. This border uses an extended |
| * {@link SchemeBorder.Scheme Scheme} called {@link ButtonScheme} which provides |
| * more information required by border to handle the the states of the model. |
| * |
| * @see SchemeBorder.Scheme |
| * @see ButtonScheme |
| */ |
| public class ButtonBorder extends SchemeBorder { |
| |
| /** |
| * Default button border. |
| * |
| * @see SCHEMES#BUTTON |
| */ |
| public static final Border BUTTON = new ButtonBorder(SCHEMES.BUTTON); |
| /** |
| * Inverted hightlight colors from BUTTON. |
| * |
| * @see SCHEMES#BUTTON_CONTRAST |
| */ |
| public static final Border BUTTON_CONTRAST = new ButtonBorder( |
| SCHEMES.BUTTON_CONTRAST); |
| /** |
| * Used for scrollbar buttons. |
| * |
| * @see SCHEMES#BUTTON_SCROLLBAR |
| */ |
| public static final Border BUTTON_SCROLLBAR = new ButtonBorder( |
| SCHEMES.BUTTON_SCROLLBAR); |
| /** |
| * Used for toolbar buttons. |
| * |
| * @see SCHEMES#TOOLBAR |
| */ |
| public static final Border TOOLBAR = new ButtonBorder(SCHEMES.TOOLBAR); |
| |
| /** |
| * Provides for a scheme to represent the borders of clickable figures like |
| * buttons. Though similar to the {@link SchemeBorder.Scheme Scheme} it |
| * supports an extra set of borders for the pressed states. |
| */ |
| public static class ButtonScheme extends Scheme { |
| private Color highlightPressed[] = null, shadowPressed[] = null; |
| |
| /** |
| * Constructs a new button scheme where the input colors are the colors |
| * for the top-left and bottom-right sides of the border. These colors |
| * serve as the colors when the border is in a pressed state too. The |
| * width of each side is determined by the number of colors passed in as |
| * input. |
| * |
| * @param highlight |
| * Colors for the top-left sides of the border |
| * @param shadow |
| * Colors for the bottom-right sides of the border |
| * @since 2.0 |
| */ |
| public ButtonScheme(Color[] highlight, Color[] shadow) { |
| highlightPressed = this.highlight = highlight; |
| shadowPressed = this.shadow = shadow; |
| init(); |
| } |
| |
| /** |
| * Constructs a new button scheme where the input colors are the colors |
| * for the top-left and bottom-right sides of the border, for the normal |
| * and pressed states. The width of each side is determined by the |
| * number of colors passed in as input. |
| * |
| * @param hl |
| * Colors for the top-left sides of the border |
| * @param sh |
| * Colors for the bottom-right sides of the border |
| * @param hlp |
| * Colors for the top-left sides of the border when figure is |
| * pressed |
| * @param shp |
| * Colors for the bottom-right sides of the border when |
| * figure is pressed |
| * @since 2.0 |
| */ |
| public ButtonScheme(Color[] hl, Color[] sh, Color[] hlp, Color[] shp) { |
| highlight = hl; |
| shadow = sh; |
| highlightPressed = hlp; |
| shadowPressed = shp; |
| init(); |
| } |
| |
| /** |
| * Calculates and returns the Insets for this border. The calculations |
| * are based on the number of normal and pressed, highlight and shadow |
| * colors. |
| * |
| * @return The insets for this border |
| * @since 2.0 |
| */ |
| protected Insets calculateInsets() { |
| int br = 1 + Math.max(getShadow().length, |
| getHighlightPressed().length); |
| int tl = Math.max(getHighlight().length, getShadowPressed().length); |
| return new Insets(tl, tl, br, br); |
| } |
| |
| /** |
| * Calculates and returns the opaque state of this border. |
| * <p> |
| * Returns false in the following conditions: |
| * <ul> |
| * <li>The number of highlight colors is different than the the number |
| * of shadow colors. |
| * <li>The number of pressed highlight colors is different than the |
| * number of pressed shadow colors. |
| * <li>Any of the highlight and shadow colors are set to |
| * <code>null</code> |
| * <li>Any of the pressed highlight and shadow colors are set to |
| * <code>null</code> |
| * </ul> |
| * This is done so that the entire region under the figure is properly |
| * covered. |
| * |
| * @return The opaque state of this border |
| * @since 2.0 |
| */ |
| protected boolean calculateOpaque() { |
| if (!super.calculateOpaque()) |
| return false; |
| if (getHighlight().length != getShadowPressed().length) |
| return false; |
| if (getShadow().length != getHighlightPressed().length) |
| return false; |
| Color[] colors = getHighlightPressed(); |
| for (int i = 0; i < colors.length; i++) |
| if (colors[i] == null) |
| return false; |
| colors = getShadowPressed(); |
| for (int i = 0; i < colors.length; i++) |
| if (colors[i] == null) |
| return false; |
| return true; |
| } |
| |
| /** |
| * Returns the pressed highlight colors of this border. |
| * |
| * @return Colors as an array of Colors |
| * @since 2.0 |
| */ |
| protected Color[] getHighlightPressed() { |
| return highlightPressed; |
| } |
| |
| /** |
| * Returns the pressed shadow colors of this border. |
| * |
| * @return Colors as an array of Colors |
| * @since 2.0 |
| */ |
| protected Color[] getShadowPressed() { |
| return shadowPressed; |
| } |
| } |
| |
| /** |
| * Interface defining commonly used schemes for the ButtonBorder. |
| */ |
| public static interface SCHEMES { |
| |
| /** |
| * Contrast button scheme |
| */ |
| ButtonScheme BUTTON_CONTRAST = new ButtonScheme(new Color[] { button, |
| buttonLightest }, DARKEST_DARKER); |
| /** |
| * Regular button scheme |
| */ |
| ButtonScheme BUTTON = new ButtonScheme(new Color[] { buttonLightest }, |
| DARKEST_DARKER); |
| /** |
| * Toolbar button scheme |
| */ |
| ButtonScheme TOOLBAR = new ButtonScheme(new Color[] { buttonLightest }, |
| new Color[] { buttonDarker }); |
| /** |
| * Scrollbar button scheme |
| */ |
| ButtonScheme BUTTON_SCROLLBAR = new ButtonScheme(new Color[] { button, |
| buttonLightest }, DARKEST_DARKER, new Color[] { buttonDarker }, |
| new Color[] { buttonDarker }); |
| } |
| |
| /** |
| * Constructs a ButtonBorder with a predefined button scheme set as its |
| * default. |
| * |
| * @since 2.0 |
| */ |
| public ButtonBorder() { |
| setScheme(SCHEMES.BUTTON); |
| } |
| |
| /** |
| * Constructs a ButtonBorder with the input ButtonScheme set as its Scheme. |
| * |
| * @param scheme |
| * ButtonScheme for this ButtonBorder. |
| * @since 2.0 |
| */ |
| public ButtonBorder(ButtonScheme scheme) { |
| setScheme(scheme); |
| } |
| |
| /** |
| * Paints this border with the help of the set scheme, the model of the |
| * clickable figure, and other inputs. The scheme is used in conjunction |
| * with the state of the model to get the appropriate colors for the border. |
| * |
| * @param figure |
| * The Clickable that this border belongs to |
| * @param graphics |
| * The graphics used for painting |
| * @param insets |
| * The insets |
| */ |
| public void paint(IFigure figure, Graphics graphics, Insets insets) { |
| Clickable clickable = (Clickable) figure; |
| ButtonModel model = clickable.getModel(); |
| ButtonScheme colorScheme = (ButtonScheme) getScheme(); |
| |
| if (clickable.isRolloverEnabled() && !model.isMouseOver() |
| && !model.isSelected()) |
| return; |
| |
| Color tl[], br[]; |
| if (model.isSelected() || model.isArmed()) { |
| tl = colorScheme.getShadowPressed(); |
| br = colorScheme.getHighlightPressed(); |
| } else { |
| tl = colorScheme.getHighlight(); |
| br = colorScheme.getShadow(); |
| } |
| |
| paint(graphics, figure, insets, tl, br); |
| } |
| |
| } |