Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2006 Sybase, Inc. 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: * Sybase, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.jst.jsf.facesconfig.ui.preference; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.draw2d.AncestorListener; import org.eclipse.draw2d.ColorConstants; import org.eclipse.draw2d.Graphics; import org.eclipse.draw2d.IFigure; import org.eclipse.draw2d.Label; import org.eclipse.draw2d.Layer; import org.eclipse.draw2d.MarginBorder; import org.eclipse.draw2d.PositionConstants; import org.eclipse.draw2d.XYLayout; import org.eclipse.draw2d.geometry.Dimension; import org.eclipse.draw2d.geometry.Point; import org.eclipse.draw2d.geometry.Rectangle; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; /** * And IconFigure consists of a bitmap image with a text label below it. * * @author bbrodt */ /*package*/ class IconFigure extends Label implements IBaseFigure { private static int defaultTextPlacement = PositionConstants.SOUTH; static Font defaultFont = JFaceResources.getFontRegistry().get(JFaceResources.DEFAULT_FONT); static Color defaultForegroundColor = ColorConstants.black; private ArrayList decorators; private IconLabel iconLabel = null; // CR389070: Figures are abbreviating rule figures names and making them // unreadable // New class that implements a separate "floating" label which is NOT // included in bounds calculations for this IconFigure private class IconLabel extends Label { private LabelLocator locator; private IconFigure host; /** * @param host * @param text */ public IconLabel(IconFigure host, String text) { super(text); this.host = host; locator = new LabelLocator(this); } /** * @return the icon figure */ public IconFigure getHost() { return host; } public Dimension getPreferredSize(int wHint, int hHing) { return host.getTextBounds().getSize(); } public void setText(String text) { super.setText(text); if (locator != null) locator.setConstraints(); } public void invalidate() { if (locator != null) locator.setConstraints(); super.invalidate(); } } // CR389070: Figures are abbreviating rule figures names and making them // unreadable // helper class that relocates the IconLabel whenever ancestor is moved or // added/removed private class LabelLocator implements AncestorListener { IconLabel label; /** * @param label */ public LabelLocator(IconLabel label) { this.label = label; label.getHost().addAncestorListener(this); } // CR408950: BP Save problems // fixed icon label refresh problems private Layer getParentLayer() { IFigure fig = label.getHost(); while (fig != null) { if (fig instanceof Layer) return (Layer) fig; fig = fig.getParent(); } return null; } public void ancestorAdded(IFigure ancestor) { Layer layer = getParentLayer(); if (layer != null && !layer.getChildren().contains(label)) { layer.add(label); setConstraints(); } } public void ancestorMoved(IFigure ancestor) { setConstraints(); } public void ancestorRemoved(IFigure ancestor) { // CR400779: GEM minimizing a complex activity sometimes leaves junk // on the screen if (label.getParent() != null && label.getParent().getChildren().contains(label)) label.getParent().remove(label); } /** * */ public void setConstraints() { Layer layer = getParentLayer(); if (layer != null && layer.getLayoutManager() != null && layer.getChildren().contains(label)) { Rectangle r = IconFigure.this.getParent().getBounds().getCopy(); r.translate(IconFigure.this.getBounds().getLocation()); r.translate(IconFigure.this.getTextLocation()); r.width = -1; r.height = -1; Rectangle oldr = (Rectangle) layer.getLayoutManager().getConstraint(label); if (oldr == null || oldr.x != r.x || oldr.y != r.y) layer.setConstraint(label, r); } } } /** * @param name * @param icon */ public IconFigure(String name, Image icon) { super(name, icon); setTextPlacement(defaultTextPlacement); setOpaque(false); setIcon(icon); setIconTextGap(0); setForegroundColor(defaultForegroundColor); // CR396303: DND in RulePanel does not get correct location if viewer is // scrolled setBackgroundColor(ColorConstants.titleGradient); XYLayout layout = new XYLayout(); setLayoutManager(layout); // CR389070: Figures are abbreviating rule figures names and making them // unreadable iconLabel = new IconLabel(this, name); iconLabel.setFont(getFont()); } // CR389070: Figures are abbreviating rule figures names and making them // unreadable /** * @return the label */ public Label getLabel() { return iconLabel; } public List getDecorators() { if (decorators == null) decorators = new ArrayList(); return decorators; } public Font getFont() { if (defaultFont == null) { defaultFont = JFaceResources.getFontRegistry().get(JFaceResources.DEFAULT_FONT); } if (getLocalFont() == null) { // TODO: replaced a deprecated assignment to font // with this, but the behaviour is a little different setFont(defaultFont); } return getLocalFont(); } public void setFont(Font f) { Font localFont = getLocalFont(); if (localFont != f) { iconLabel.setFont(f); } super.setFont(f); } public void setVisible(boolean visible) { super.setVisible(visible); iconLabel.setVisible(visible); } public void setText(String text) { super.setText(text); // CR389070: Figures are abbreviating rule figures names and making them // unreadable if (iconLabel != null && iconLabel.isVisible()) { iconLabel.setText(text); iconLabel.setFont(getFont()); // labelLocator.setConstraints(); } } public void setToolTipText(String text) { Label toolTipLabel = null; if (text != null && text.length() > 0) { toolTipLabel = new Label(text); toolTipLabel.setBorder(new MarginBorder(3)); } super.setToolTip(toolTipLabel); } public String getToolTipText() { if (getToolTip() != null) return ((Label) getToolTip()).getText(); return null; } public void setHighlight(boolean flag) { if (flag) setOpaque(true); else setOpaque(false); } // CR389070: Figures are abbreviating rule figures names and making them // unreadable protected Dimension getSubStringTextSize() { return getTextSize(); } /* * CR374981: Long activity labels do not get wrapped or truncated We must * override this so that the label gets truncated */ public Dimension getPreferredSize(int wHint, int hHint) { if (prefSize == null) { super.getPreferredSize(-1, -1); prefSize.width = getIconBounds().getSize().width; Dimension minSize_ = getMinimumSize(wHint, hHint); if (prefSize.width < minSize_.width) prefSize.width = minSize_.width; if (prefSize.height < minSize_.height) prefSize.height = minSize_.height; } return prefSize; } /* * (non-Javadoc) * * @see org.eclipse.draw2d.IFigure#getMinimumSize(int, int) */ public Dimension getMinimumSize(int w, int h) { return new Dimension(8, 8); } public void addDecorator(BaseFigureDecorator decorator) { removeDecorator(decorator.getPosition()); getDecorators().add(decorator); add(decorator); invalidate(); } public void removeDecorator() { removeDecorator(BaseFigureDecorator.DEFAULT_DECORATOR_POSITION); } public void removeDecorator(int position) { Iterator it = getDecorators().iterator(); while (it.hasNext()) { BaseFigureDecorator d = (BaseFigureDecorator) it.next(); if (d.getPosition() == position) { it.remove(); remove(d); invalidate(); break; } } } /* * (non-Javadoc) * * @see org.eclipse.draw2d.Label#setTextPlacement(int) */ public void setTextPlacement(int where) { super.setTextPlacement(where); layout(); invalidate(); } public void invalidate() { // CR405873: F111-Error decorator missing // this was moved to paintFigure() // placeDecorators(); super.invalidate(); } private void placeDecorators() { Point o = getLocation(); Point p = getIconBounds().getLocation(); Dimension size = this.getIconBounds().getSize(); Iterator it = getDecorators().iterator(); while (it.hasNext()) { int x = p.x - o.x, y = p.y - o.y; BaseFigureDecorator decorator = (BaseFigureDecorator) it.next(); Dimension decoratorSize = decorator.getPreferredSize(); switch (decorator.getPosition()) { case (PositionConstants.CENTER | PositionConstants.MIDDLE): // CR378889: Case of decoration that should be right in the // middle. // Had to add a fudge factor because it's not exactly where I // want it. int fudge = 4; y += size.height / 2 - decoratorSize.height / 2 + fudge; x += size.width / 2 - decoratorSize.width / 2; break; case PositionConstants.NORTH: x += size.width / 2 - decoratorSize.width / 2; break; case PositionConstants.NORTH_EAST: x += size.width - decoratorSize.width; break; case PositionConstants.EAST: x += size.width - decoratorSize.width; y += size.height / 2 - decoratorSize.height / 2; break; case PositionConstants.SOUTH_EAST: x += size.width - decoratorSize.width; y += size.height - decoratorSize.height; break; case PositionConstants.SOUTH: x += size.width / 2 - decoratorSize.width / 2; y += size.height - decoratorSize.height; break; case PositionConstants.SOUTH_WEST: y += size.height - decoratorSize.height; break; case PositionConstants.WEST: y += size.height / 2 - decoratorSize.height / 2; break; case PositionConstants.NORTH_WEST: break; } getLayoutManager().setConstraint(decorator, new Rectangle(x, y, -1, -1)); } layout(); } // CR389070: Figures are abbreviating rule figures names and making them // unreadable protected void paintFigure(Graphics graphics) { if (isOpaque()) super.paintFigure(graphics); // CR405873: F111-Error decorator missing placeDecorators(); Rectangle bounds_ = getBounds(); graphics.translate(bounds_.x, bounds_.y); if (getIcon() != null) graphics.drawImage(getIcon(), getIconLocation()); if (iconLabel == null || !iconLabel.isVisible()) { if (!isEnabled()) { graphics.translate(1, 1); graphics.setForegroundColor(ColorConstants.buttonLightest); graphics.drawText(getSubStringText(), getTextLocation()); graphics.translate(-1, -1); graphics.setForegroundColor(ColorConstants.buttonDarker); } graphics.drawText(getSubStringText(), getTextLocation()); } graphics.translate(-bounds_.x, -bounds_.y); } }