Mercurial > projects > dwt-addons
view dwtx/draw2d/ButtonBorder.d @ 172:d994a8b2cdf7
again compile fixes
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 10 Sep 2008 23:14:02 +0200 |
parents | 2d6540440fe6 |
children |
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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 dwtx.draw2d.ButtonBorder; import dwt.dwthelper.utils; import dwt.graphics.Color; import dwtx.draw2d.geometry.Insets; import dwtx.draw2d.SchemeBorder; import dwtx.draw2d.Border; import dwtx.draw2d.IFigure; import dwtx.draw2d.Graphics; import dwtx.draw2d.Clickable; import dwtx.draw2d.ButtonModel; import dwtx.draw2d.ColorConstants; /** * 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 Scheme * @see ButtonScheme */ public class ButtonBorder : SchemeBorder { alias SchemeBorder.paint paint; /** * Default button border. * @see SCHEMES#BUTTON */ private static Border BUTTON_; public static Border BUTTON(){ if( BUTTON_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_ is null ){ BUTTON_ = new ButtonBorder(SCHEMES.BUTTON); } } } return BUTTON_; } /** * Inverted hightlight colors from BUTTON. * @see SCHEMES#BUTTON_CONTRAST */ private static Border BUTTON_CONTRAST_; public static Border BUTTON_CONTRAST(){ if( BUTTON_CONTRAST_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_CONTRAST_ is null ){ BUTTON_CONTRAST_ = new ButtonBorder(SCHEMES.BUTTON_CONTRAST); } } } return BUTTON_CONTRAST_; } /** * Used for scrollbar buttons. * @see SCHEMES#BUTTON_SCROLLBAR */ private static Border BUTTON_SCROLLBAR_; public static Border BUTTON_SCROLLBAR(){ if( BUTTON_SCROLLBAR_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_SCROLLBAR_ is null ){ BUTTON_SCROLLBAR_ = new ButtonBorder(SCHEMES.BUTTON_SCROLLBAR); } } } return BUTTON_SCROLLBAR_; } /** * Used for toolbar buttons. * @see SCHEMES#TOOLBAR */ private static Border TOOLBAR_; public static Border TOOLBAR(){ if( TOOLBAR_ is null ){ synchronized( ButtonScheme.classinfo ){ if( TOOLBAR_ is null ){ TOOLBAR_ = new ButtonBorder(SCHEMES.TOOLBAR); } } } return 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 : 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 this(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 this(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 bool calculateOpaque() { if (!super.calculateOpaque()) return false; if (getHighlight().length !is getShadowPressed().length) return false; if (getShadow().length !is getHighlightPressed().length) return false; Color [] colors = getHighlightPressed(); for (int i = 0; i < colors.length; i++) if (colors[i] is null) return false; colors = getShadowPressed(); for (int i = 0; i < colors.length; i++) if (colors[i] is 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 struct SCHEMES { /** * Contrast button scheme */ private static ButtonScheme BUTTON_CONTRAST_; static ButtonScheme BUTTON_CONTRAST(){ if( BUTTON_CONTRAST_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_CONTRAST_ is null ){ BUTTON_CONTRAST_ = new ButtonScheme( [ColorConstants.button, ColorConstants.buttonLightest], DARKEST_DARKER ); } } } return BUTTON_CONTRAST_; } /** * Regular button scheme */ private static ButtonScheme BUTTON_; static ButtonScheme BUTTON(){ if( BUTTON_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_ is null ){ BUTTON_ = new ButtonScheme( [ColorConstants.buttonLightest], DARKEST_DARKER ); } } } return BUTTON_; } /** * Toolbar button scheme */ private static ButtonScheme TOOLBAR_; static ButtonScheme TOOLBAR(){ if( TOOLBAR_ is null ){ synchronized( ButtonScheme.classinfo ){ if( TOOLBAR_ is null ){ TOOLBAR_ = new ButtonScheme( [ColorConstants.buttonLightest], [ColorConstants.buttonDarker] ); } } } return TOOLBAR_; } /** * Scrollbar button scheme */ private static ButtonScheme BUTTON_SCROLLBAR_; static ButtonScheme BUTTON_SCROLLBAR(){ if( BUTTON_SCROLLBAR_ is null ){ synchronized( ButtonScheme.classinfo ){ if( BUTTON_SCROLLBAR_ is null ){ BUTTON_SCROLLBAR_ = new ButtonScheme( [ColorConstants.button, ColorConstants.buttonLightest], DARKEST_DARKER, [ColorConstants.buttonDarker], [ColorConstants.buttonDarker] ); } } } return BUTTON_SCROLLBAR_; } } /** * Constructs a ButtonBorder with a predefined button scheme set as its default. * * @since 2.0 */ public this() { setScheme(SCHEMES.BUTTON); } /** * Constructs a ButtonBorder with the input ButtonScheme set as its Scheme. * * @param scheme ButtonScheme for this ButtonBorder. * @since 2.0 */ public this(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 = cast(Clickable)figure; ButtonModel model = clickable.getModel(); ButtonScheme colorScheme = cast(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); } }