@Override public void draw(Graphics2D g) { double opacity = get(OPACITY); opacity = Math.min(Math.max(0d, opacity), 1d); if (opacity != 0d) { if (opacity != 1d) { Rectangle2D.Double drawingArea = getDrawingArea(); Rectangle2D clipBounds = g.getClipBounds(); if (clipBounds != null) { Rectangle2D.intersect(drawingArea, clipBounds, drawingArea); } if (!drawingArea.isEmpty()) { BufferedImage buf = new BufferedImage( (int) ((2 + drawingArea.width) * g.getTransform().getScaleX()), (int) ((2 + drawingArea.height) * g.getTransform().getScaleY()), BufferedImage.TYPE_INT_ARGB); Graphics2D gr = buf.createGraphics(); gr.scale(g.getTransform().getScaleX(), g.getTransform().getScaleY()); gr.translate((int) -drawingArea.x, (int) -drawingArea.y); gr.setRenderingHints(g.getRenderingHints()); drawFigure(gr); gr.dispose(); Composite savedComposite = g.getComposite(); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) opacity)); g.drawImage( buf, (int) drawingArea.x, (int) drawingArea.y, 2 + (int) drawingArea.width, 2 + (int) drawingArea.height, null); g.setComposite(savedComposite); } } else { drawFigure(g); } } }
public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; RenderingHints rh = g2d.getRenderingHints(); rh.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); rh.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); g2d.setRenderingHints(rh); // Background. D = this.getSize(); g.setColor(backgroundColor); g.fillRect(0, 0, D.width, D.height); Graphics2D g2 = (Graphics2D) g; g2.setStroke(lineStroke); // Axes, bounding box. g.setColor(Color.gray); g.drawLine(inset, D.height - inset, D.width - inset, D.height - inset); g.drawLine(D.width - inset, inset, D.width - inset, D.height - inset); g.drawLine(inset, inset, inset, D.height - inset); g.drawLine(inset, inset, D.width - inset, inset); double xDelta = (maxX - minX) / numIntervals; // X-ticks and labels. for (int i = 1; i <= numIntervals; i++) { double xTickd = i * xDelta; int xTick = (int) (xTickd / (maxX - minX) * (D.width - 2 * inset)); g.drawLine(inset + xTick, D.height - inset - 5, inset + xTick, D.height - inset + 5); double x = minX + i * xDelta; g.drawString(df.format(x), xTick + inset - 5, D.height - inset + 20); } // Y-ticks double yDelta = (maxY - minY) / numIntervals; for (int i = 0; i < numIntervals; i++) { int yTick = (i + 1) * (int) ((D.height - 2 * inset) / (double) numIntervals); g.drawLine(inset - 5, D.height - yTick - inset, inset + 5, D.height - yTick - inset); double y = minY + (i + 1) * yDelta; g.drawString(df.format(y), 1, D.height - yTick - inset); } // Zoom+move Font savedFont = g.getFont(); g.setFont(plusFont); g.drawString("+", D.width - 25, 20); g.setFont(minusFont); g.drawString("-", D.width - 25, 50); drawArrow(g2d, D.width - 70, 20, D.width - 70, 0, 1.0f, lineStroke); // Up drawArrow(g2d, D.width - 70, 30, D.width - 70, 50, 1.0f, lineStroke); // Down drawArrow(g2d, D.width - 65, 25, D.width - 45, 25, 1.0f, lineStroke); // Right drawArrow(g2d, D.width - 75, 25, D.width - 95, 25, 1.0f, lineStroke); // Left g.setFont(savedFont); // See if standard axes are in the middle. g.setColor(Color.gray); if ((minX < 0) && (maxX > 0) && (drawMiddleAxes)) { // Draw y-axis int x = (int) ((0 - minX) / (maxX - minX) * (D.width - 2 * inset)); g.drawLine(inset + x, D.height - inset, inset + x, inset); } if ((minY < 0) && (maxY > 0) && (drawMiddleAxes)) { // Draw x-axis int y = (int) ((0 - minY) / (maxY - minY) * (D.height - 2.0 * inset)); g.drawLine(inset, D.height - y - inset, D.width - inset, D.height - y - inset); } // Draw the objects. drawObjects(g, points, lines, ovals, rectangles, images, labels, eqnLines); if (animationMode) { drawObjects(g, animPoints, animLines, animOvals, animRectangles, null, labels, eqnLines); // No images in animation mode. } drawScribbles(g); }
/** [Advanced] */ public RenderingHints getRenderingHints() { Graphics2D g = getG(); return g == null ? null : g.getRenderingHints(); }