Java tutorial
/* * Copyright (C) 2010, Google Inc. * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com> * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> * and other copyright owners as documented in the project's IP log. * * This program and the accompanying materials are made available * under the terms of the Eclipse Distribution License v1.0 which * accompanies this distribution, is reproduced below, and is * available at http://www.eclipse.org/org/documents/edl-v10.php * * All rights reserved. * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * - Neither the name of the Eclipse Foundation, Inc. nor the * names of its contributors may be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * */ package kr.re.ec.grigit.graph.ui; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Polygon; import java.io.Serializable; import kr.re.ec.grigit.graph.ui.GriGitGraphPane.GraphCellRender; import kr.re.ec.grigit.graph.ui.SwingCommitList.SwingLane; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.Ref; import org.eclipse.jgit.revplot.AbstractPlotRenderer; import org.eclipse.jgit.revplot.PlotCommit; /** * see license * didn't touch a thing * */ final class AWTPlotRenderer extends AbstractPlotRenderer<SwingLane, Color> implements Serializable { private static final long serialVersionUID = 1L; final kr.re.ec.grigit.graph.ui.GriGitGraphPane.GraphCellRender cell; transient Graphics2D g; AWTPlotRenderer(final GraphCellRender c) { cell = c; } void paint(final Graphics in, final PlotCommit<SwingLane> commit) { g = (Graphics2D) in.create(); try { final int h = cell.getHeight(); g.setColor(cell.getBackground()); g.fillRect(0, 0, cell.getWidth(), h); if (commit != null) paintCommit(commit, h); } finally { g.dispose(); g = null; } } @Override protected void drawLine(final Color color, int x1, int y1, int x2, int y2, int width) { if (y1 == y2) { x1 -= width / 2; x2 -= width / 2; } else if (x1 == x2) { y1 -= width / 2; y2 -= width / 2; } g.setColor(color); g.setStroke(GriGitGraphPane.stroke(width)); g.drawLine(x1, y1, x2, y2); } @Override protected void drawCommitDot(final int x, final int y, final int w, final int h) { g.setColor(Color.blue); g.setStroke(GriGitGraphPane.strokeCache[1]); g.fillOval(x, y, w, h); g.setColor(Color.black); g.drawOval(x, y, w, h); } @Override protected void drawBoundaryDot(final int x, final int y, final int w, final int h) { g.setColor(cell.getBackground()); g.setStroke(GriGitGraphPane.strokeCache[1]); g.fillOval(x, y, w, h); g.setColor(Color.black); g.drawOval(x, y, w, h); } @Override protected void drawText(final String msg, final int x, final int y) { final int texth = g.getFontMetrics().getHeight(); final int y0 = y - texth / 2 + (cell.getHeight() - texth) / 2; g.setColor(cell.getForeground()); g.drawString(msg, x, y0 + texth - g.getFontMetrics().getDescent()); } @Override protected Color laneColor(final SwingLane myLane) { return myLane != null ? myLane.color : Color.black; } void paintTriangleDown(final int cx, final int y, final int h) { final int tipX = cx; final int tipY = y + h; final int baseX1 = cx - 10 / 2; final int baseX2 = tipX + 10 / 2; final int baseY = y; final Polygon triangle = new Polygon(); triangle.addPoint(tipX, tipY); triangle.addPoint(baseX1, baseY); triangle.addPoint(baseX2, baseY); g.fillPolygon(triangle); g.drawPolygon(triangle); } @Override protected int drawLabel(int x, int y, Ref ref) { String txt; String name = ref.getName(); if (name.startsWith(Constants.R_HEADS)) { g.setBackground(Color.GREEN); txt = name.substring(Constants.R_HEADS.length()); } else if (name.startsWith(Constants.R_REMOTES)) { g.setBackground(Color.LIGHT_GRAY); txt = name.substring(Constants.R_REMOTES.length()); } else if (name.startsWith(Constants.R_TAGS)) { g.setBackground(Color.YELLOW); txt = name.substring(Constants.R_TAGS.length()); } else { // Whatever this would be g.setBackground(Color.WHITE); if (name.startsWith(Constants.R_REFS)) txt = name.substring(Constants.R_REFS.length()); else txt = name; // HEAD and such } if (ref.getPeeledObjectId() != null) { float[] colorComponents = g.getBackground().getRGBColorComponents(null); colorComponents[0] *= 0.9; colorComponents[1] *= 0.9; colorComponents[2] *= 0.9; g.setBackground(new Color(colorComponents[0], colorComponents[1], colorComponents[2])); } if (txt.length() > 12) txt = txt.substring(0, 11) + "\u2026"; // ellipsis "" (in UTF-8) //$NON-NLS-1$ final int texth = g.getFontMetrics().getHeight(); int textw = g.getFontMetrics().stringWidth(txt); g.setColor(g.getBackground()); int arcHeight = texth / 4; int y0 = y - texth / 2 + (cell.getHeight() - texth) / 2; g.fillRoundRect(x, y0, textw + arcHeight * 2, texth - 1, arcHeight, arcHeight); g.setColor(g.getColor().darker()); g.drawRoundRect(x, y0, textw + arcHeight * 2, texth - 1, arcHeight, arcHeight); g.setColor(Color.BLACK); g.drawString(txt, x + arcHeight, y0 + texth - g.getFontMetrics().getDescent()); return arcHeight * 3 + textw; } }