Java tutorial
/** * Warlock, the open-source cross-platform game client * * Copyright 2010, Warlock LLC, and individual contributors as indicated * by the @authors tag. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package cc.warlock.rcp.stormfront.ui; import java.util.HashMap; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.events.PaintEvent; import org.eclipse.swt.events.PaintListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Canvas; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import cc.warlock.core.stormfront.client.IStormFrontDialogMessage; import cc.warlock.core.stormfront.client.StormFrontProgressBar; /** * @author Marshall * * This is a custom progress bar that mimics the L&F of StormFront's status bars. * It's sort of a dirty hack, but it suffices for now. It needs to handle being in a LayoutManager better... */ public class StormFrontDialogControl extends Canvas { protected Font progressFont; protected int width, height; protected int borderWidth; protected HashMap<String, StormFrontProgressBar> progressBars = new HashMap<String, StormFrontProgressBar>(); protected Color healthFG, healthBG, healthBorder, manaFG, manaBG, manaBorder, fatigueFG, fatigueBG, fatigueBorder, spiritFG, spiritBG, spiritBorder, concentrationFG, concentrationBG, concentrationBorder, defaultFG, defaultBG, defaultBorder; public StormFrontDialogControl(Composite composite, int style) { super(composite, style); Display display = this.getDisplay(); // defaults width = 100; height = 15; Font textFont = JFaceResources.getDefaultFont(); FontData textData = textFont.getFontData()[0]; int minHeight = 8; healthBG = new Color(display, 0x80, 0, 0); healthFG = new Color(display, 255, 255, 255); healthBorder = new Color(display, 0x79, 0x6a, 0x6a); manaBG = new Color(display, 0, 0, 0xff); manaFG = new Color(display, 255, 255, 255); manaBorder = new Color(display, 0x72, 0x72, 0xff); fatigueBG = new Color(display, 0xd0, 0x98, 0x2f); fatigueFG = new Color(display, 0, 0, 0); fatigueBorder = new Color(display, 0xde, 0xcc, 0xaa); spiritBG = new Color(display, 150, 150, 150); spiritFG = new Color(display, 0, 0, 0); spiritBorder = new Color(display, 225, 225, 225); concentrationBG = new Color(display, 0, 255, 0); concentrationFG = new Color(display, 0, 0, 0); concentrationBorder = new Color(display, 225, 225, 225); defaultBG = new Color(display, 150, 150, 150); defaultFG = new Color(display, 0, 0, 0); defaultBorder = new Color(display, 225, 225, 225); progressFont = new Font(getShell().getDisplay(), textData.getName(), (int) Math.max(minHeight, textData.getHeight()), textData.getStyle()); borderWidth = 1; addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { Rectangle bounds = getBounds(); e.gc.setFont(progressFont); for (StormFrontProgressBar progressBar : progressBars.values()) { int pbWidth = progressBar.getWidth(); int pbLeft = progressBar.getLeft(); int pbValue = progressBar.getValue(); // This should probably all be abstracted out int fullBarWidth = pbWidth * bounds.width / 100; int barWidth = fullBarWidth - 2 * borderWidth; int barHeight = bounds.height - 2 * borderWidth; int filledWidth = pbValue * barWidth / 100; int left = pbLeft * bounds.width / 100; // Draw the border Color borderColor = getBorderColor(progressBar.id); e.gc.setForeground(borderColor); e.gc.setLineWidth(borderWidth); e.gc.drawRectangle(left, 0, fullBarWidth, bounds.height); Color bgColor = getBgColor(progressBar.id); // draw the filled part of the rectangle Color gradientColor = getGradientColor(25, true, bgColor); e.gc.setBackground(gradientColor); e.gc.setForeground(bgColor); e.gc.fillGradientRectangle(borderWidth + left, borderWidth, filledWidth, barHeight, false); // draw the background e.gc.setBackground(borderColor); e.gc.fillRectangle(borderWidth + left + filledWidth, borderWidth, barWidth - filledWidth, barHeight); Color textColor = getTextColor(progressBar.id); e.gc.setForeground(textColor); String text = progressBar.text; Point extent = e.gc.textExtent(text); int text_left = left + (barWidth - extent.x) / 2; int text_top = (bounds.height - 2 * borderWidth - e.gc.getFontMetrics().getHeight()) / 2; e.gc.drawText(text, text_left, text_top, true); } } }); } private Color getGradientColor(int factor, boolean lighter, Color color) { int red = 0; int green = 0; int blue = 0; if (lighter) { red = color.getRed() < (255 - factor) ? color.getRed() + factor : 255; green = color.getGreen() < (255 - factor) ? color.getGreen() + factor : 255; blue = color.getBlue() < (255 - factor) ? color.getBlue() + factor : 255; } else { red = color.getRed() > factor ? color.getRed() - factor : 0; green = color.getRed() > factor ? color.getRed() - factor : 0; blue = color.getRed() > factor ? color.getRed() - factor : 0; } return new Color(getShell().getDisplay(), red, green, blue); } public void setSize(int width, int height) { this.width = width; this.height = height; redraw(); } public Point computeSize(int wHint, int hHint, boolean changed) { return new Point(width, height); } public void dispose() { progressFont.dispose(); super.dispose(); } public void sendMessage(IStormFrontDialogMessage msg) { if (msg instanceof StormFrontProgressBar) { StormFrontProgressBar bar = (StormFrontProgressBar) msg; progressBars.put(bar.id, bar); } redraw(); } private Color getTextColor(String id) { if (id.equals("health")) return healthFG; if (id.equals("mana")) return manaFG; if (id.equals("spirit")) return spiritFG; if (id.equals("stamina")) return fatigueFG; if (id.equals("concentration")) return concentrationFG; return defaultFG; } private Color getBgColor(String id) { if (id.equals("health")) return healthBG; if (id.equals("mana")) return manaBG; if (id.equals("spirit")) return spiritBG; if (id.equals("stamina")) return fatigueBG; if (id.equals("concentration")) return concentrationBG; return defaultBG; } private Color getBorderColor(String id) { if (id.equals("health")) return healthBorder; if (id.equals("mana")) return manaBorder; if (id.equals("spirit")) return spiritBorder; if (id.equals("stamina")) return fatigueBorder; if (id.equals("concentration")) return concentrationBorder; return defaultBorder; } }