diff options
Diffstat (limited to 'gnu/java/awt/java2d/AbstractGraphics2D.java')
| -rw-r--r-- | gnu/java/awt/java2d/AbstractGraphics2D.java | 178 |
1 files changed, 133 insertions, 45 deletions
diff --git a/gnu/java/awt/java2d/AbstractGraphics2D.java b/gnu/java/awt/java2d/AbstractGraphics2D.java index 326863163..da2125398 100644 --- a/gnu/java/awt/java2d/AbstractGraphics2D.java +++ b/gnu/java/awt/java2d/AbstractGraphics2D.java @@ -100,6 +100,20 @@ import java.util.Map; * {@link #updateRaster(Raster, int, int, int, int)} method, which always gets * called after a chunk of data got painted into the raster. * </p> + * <p>Alternativly the backend can provide a method for filling Shapes by + * overriding the protected method fillShape(). This can be accomplished + * by a polygon filling function of the backend. Keep in mind though that + * Shapes can be quite complex (i.e. non-convex and containing holes, etc) + * which is not supported by all polygon fillers. Also it must be noted + * that fillShape() is expected to handle painting and compositing as well as + * clipping and transformation. If your backend can't support this natively, + * then you can fallback to the implementation in this class. You'll need + * to provide a writable Raster then, see above.</p> + * <p>Another alternative is to implement fillScanline() which only requires + * the backend to be able to draw horizontal lines in device space, + * which is usually very cheap. + * The implementation should still handle painting and compositing, + * but no more clipping and transformation is required by the backend.</p> * <p>The backend is free to provide implementations for the various raw* * methods for optimized AWT 1.1 style painting of some primitives. This should * accelerate painting of Swing greatly. When doing so, the backend must also @@ -126,6 +140,9 @@ import java.util.Map; * in plain Java because they involve lots of shuffling around with large * arrays. In fact, you really would want to let the graphics card to the * work, they are made for this.</li> + * <li>Provide an accelerated implementation for fillShape(). For instance, + * OpenGL can fill shapes very efficiently. There are some considerations + * to be made though, see above for details.</li> * </ol> * </p> * @@ -144,6 +161,12 @@ public abstract class AbstractGraphics2D private static final int AA_SAMPLING = 8; /** + * Caches certain shapes to avoid massive creation of such Shapes in + * the various draw* and fill* methods. + */ + private static final ThreadLocal shapeCache = new ThreadLocal(); + + /** * The transformation for this Graphics2D instance */ protected AffineTransform transform; @@ -184,11 +207,6 @@ public abstract class AbstractGraphics2D private RenderingHints renderingHints; /** - * The paint raster. - */ - private Raster paintRaster; - - /** * The raster of the destination surface. This is where the painting is * performed. */ @@ -219,7 +237,7 @@ public abstract class AbstractGraphics2D * AbstractGraphics2D object and will be the most commonly used setting * in Swing rendering and should therefore be optimized as much as possible. */ - private boolean isOptimized; + private boolean isOptimized = true; /** * Creates a new AbstractGraphics2D instance. @@ -270,7 +288,6 @@ public abstract class AbstractGraphics2D public boolean drawImage(Image image, AffineTransform xform, ImageObserver obs) { - boolean ret = false; Rectangle areaOfInterest = new Rectangle(0, 0, image.getWidth(obs), image.getHeight(obs)); return drawImageImpl(image, xform, obs, areaOfInterest); @@ -1144,14 +1161,31 @@ public abstract class AbstractGraphics2D { if (isOptimized) { - int tx = (int) transform.getTranslateX(); - int ty = (int) transform.getTranslateY(); - rawDrawLine(x1 + tx, y1 + ty, x2 + tx, y2 + ty); + rawDrawLine(x1, y1, x2, y2); } else { - Line2D line = new Line2D.Double(x1, y1, x2, y2); - draw(line); + ShapeCache sc = getShapeCache(); + if (sc.line == null) + sc.line = new Line2D.Float(); + sc.line.setLine(x1, y1, x2, y2); + draw(sc.line); + } + } + + public void drawRect(int x, int y, int w, int h) + { + if (isOptimized) + { + rawDrawRect(x, y, w, h); + } + else + { + ShapeCache sc = getShapeCache(); + if (sc.rect == null) + sc.rect = new Rectangle(); + sc.rect.setBounds(x, y, w, h); + draw(sc.rect); } } @@ -1167,13 +1201,15 @@ public abstract class AbstractGraphics2D { if (isOptimized) { - int tx = (int) transform.getTranslateX(); - int ty = (int) transform.getTranslateY(); - rawFillRect(x + tx, y + ty, width, height); + rawFillRect(x, y, width, height); } else { - fill(new Rectangle(x, y, width, height)); + ShapeCache sc = getShapeCache(); + if (sc.rect == null) + sc.rect = new Rectangle(); + sc.rect.setBounds(x, y, width, height); + fill(sc.rect); } } @@ -1214,8 +1250,11 @@ public abstract class AbstractGraphics2D public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) { - draw(new RoundRectangle2D.Double(x, y, width, height, arcWidth, - arcHeight)); + ShapeCache sc = getShapeCache(); + if (sc.roundRect == null) + sc.roundRect = new RoundRectangle2D.Float(); + sc.roundRect.setRoundRect(x, y, width, height, arcWidth, arcHeight); + draw(sc.roundRect); } /** @@ -1231,8 +1270,11 @@ public abstract class AbstractGraphics2D public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) { - fill(new RoundRectangle2D.Double(x, y, width, height, arcWidth, - arcHeight)); + ShapeCache sc = getShapeCache(); + if (sc.roundRect == null) + sc.roundRect = new RoundRectangle2D.Float(); + sc.roundRect.setRoundRect(x, y, width, height, arcWidth, arcHeight); + fill(sc.roundRect); } /** @@ -1245,7 +1287,11 @@ public abstract class AbstractGraphics2D */ public void drawOval(int x, int y, int width, int height) { - draw(new Ellipse2D.Double(x, y, width, height)); + ShapeCache sc = getShapeCache(); + if (sc.ellipse == null) + sc.ellipse = new Ellipse2D.Float(); + sc.ellipse.setFrame(x, y, width, height); + draw(sc.ellipse); } /** @@ -1258,7 +1304,11 @@ public abstract class AbstractGraphics2D */ public void fillOval(int x, int y, int width, int height) { - fill(new Ellipse2D.Double(x, y, width, height)); + ShapeCache sc = getShapeCache(); + if (sc.ellipse == null) + sc.ellipse = new Ellipse2D.Float(); + sc.ellipse.setFrame(x, y, width, height); + fill(sc.ellipse); } /** @@ -1267,8 +1317,11 @@ public abstract class AbstractGraphics2D public void drawArc(int x, int y, int width, int height, int arcStart, int arcAngle) { - draw(new Arc2D.Double(x, y, width, height, arcStart, arcAngle, - Arc2D.OPEN)); + ShapeCache sc = getShapeCache(); + if (sc.arc == null) + sc.arc = new Arc2D.Float(); + sc.arc.setArc(x, y, width, height, arcStart, arcAngle, Arc2D.OPEN); + draw(sc.arc); } /** @@ -1277,8 +1330,11 @@ public abstract class AbstractGraphics2D public void fillArc(int x, int y, int width, int height, int arcStart, int arcAngle) { - fill(new Arc2D.Double(x, y, width, height, arcStart, arcAngle, - Arc2D.OPEN)); + ShapeCache sc = getShapeCache(); + if (sc.arc == null) + sc.arc = new Arc2D.Float(); + sc.arc.setArc(x, y, width, height, arcStart, arcAngle, Arc2D.PIE); + draw(sc.arc); } public void drawPolyline(int[] xPoints, int[] yPoints, int npoints) @@ -1292,7 +1348,13 @@ public abstract class AbstractGraphics2D */ public void drawPolygon(int[] xPoints, int[] yPoints, int npoints) { - draw(new Polygon(xPoints, yPoints, npoints)); + ShapeCache sc = getShapeCache(); + if (sc.polygon == null) + sc.polygon = new Polygon(); + sc.polygon.xpoints = xPoints; + sc.polygon.ypoints = yPoints; + sc.polygon.npoints = npoints; + draw(sc.polygon); } /** @@ -1300,7 +1362,13 @@ public abstract class AbstractGraphics2D */ public void fillPolygon(int[] xPoints, int[] yPoints, int npoints) { - fill(new Polygon(xPoints, yPoints, npoints)); + ShapeCache sc = getShapeCache(); + if (sc.polygon == null) + sc.polygon = new Polygon(); + sc.polygon.xpoints = xPoints; + sc.polygon.ypoints = yPoints; + sc.polygon.npoints = npoints; + fill(sc.polygon); } /** @@ -1461,8 +1529,12 @@ public abstract class AbstractGraphics2D } /** - * Fills the specified shape. The shape has already been clipped against the - * current clip. + * Fills the specified shape. Override this if your backend can efficiently + * fill shapes. This is possible on many systems via a polygon fill + * method or something similar. But keep in mind that Shapes can be quite + * complex (non-convex, with holes etc), which is not necessarily supported + * by all polygon fillers. Also note that you must perform clipping + * before filling the shape. * * @param s the shape to fill * @param isFont <code>true</code> if the shape is a font outline @@ -1534,6 +1606,11 @@ public abstract class AbstractGraphics2D draw(new Line2D.Float(x0, y0, x1, y1)); } + protected void rawDrawRect(int x, int y, int w, int h) + { + draw(new Rectangle(x, y, w, h)); + } + /** * Draws a string in optimization mode. The implementation should respect the * clip and translation. It can assume that the clip is a rectangle and that @@ -1628,11 +1705,7 @@ public abstract class AbstractGraphics2D } /** - * Fills the specified polygon. This should be overridden by backends - * that support accelerated (native) polygon filling, which is the - * case for most toolkit window and offscreen image implementations. - * - * The polygon is already clipped when this method is called. + * Fills the specified polygon without anti-aliasing. */ private void fillShapeImpl(ArrayList segs, Rectangle2D deviceBounds2D, Rectangle2D userBounds, @@ -1663,7 +1736,7 @@ public abstract class AbstractGraphics2D for (Iterator i = segs.iterator(); i.hasNext();) { PolyEdge edge = (PolyEdge) i.next(); - int yindex = (int) ((int) Math.ceil(edge.y0) - (int) Math.ceil(icMinY)); + int yindex = (int) Math.ceil(edge.y0) - (int) Math.ceil(icMinY); if (edgeTable[yindex] == null) // Create bucket when needed. edgeTable[yindex] = new ArrayList(); edgeTable[yindex].add(edge); // Add edge to the bucket of its line. @@ -1767,7 +1840,8 @@ public abstract class AbstractGraphics2D } /** - * Paints a scanline between x0 and x1. + * Paints a scanline between x0 and x1. Override this when your backend + * can efficiently draw/fill horizontal lines. * * @param x0 the left offset * @param x1 the right offset @@ -1973,8 +2047,7 @@ public abstract class AbstractGraphics2D // Render full scanline. //System.err.println("scanline: " + y); if (! emptyScanline) - fillScanlineAA(alpha, leftX, (int) y, rightX - leftX, pCtx, - (int) minX); + fillScanlineAA(alpha, leftX, y, rightX - leftX, pCtx, (int) minX); } pCtx.dispose(); @@ -1987,7 +2060,7 @@ public abstract class AbstractGraphics2D * * @param alpha the alpha values in the scanline * @param x0 the beginning of the scanline - * @param y the y coordinate of the line + * @param yy the y coordinate of the line */ private void fillScanlineAA(int[] alpha, int x0, int yy, int numPixels, PaintContext pCtx, int offs) @@ -1998,7 +2071,6 @@ public abstract class AbstractGraphics2D Raster paintRaster = pCtx.getRaster(x0, yy, numPixels, 1); //System.err.println("paintColorModel: " + pCtx.getColorModel()); WritableRaster aaRaster = paintRaster.createCompatibleWritableRaster(); - int numBands = paintRaster.getNumBands(); ColorModel cm = pCtx.getColorModel(); double lastAlpha = 0.; int lastAlphaInt = 0; @@ -2157,10 +2229,10 @@ public abstract class AbstractGraphics2D private static Rectangle computeIntersection(int x, int y, int w, int h, Rectangle rect) { - int x2 = (int) rect.x; - int y2 = (int) rect.y; - int w2 = (int) rect.width; - int h2 = (int) rect.height; + int x2 = rect.x; + int y2 = rect.y; + int w2 = rect.width; + int h2 = rect.height; int dx = (x > x2) ? x : x2; int dy = (y > y2) ? y : y2; @@ -2267,4 +2339,20 @@ public abstract class AbstractGraphics2D deviceBounds.setRect(minX, minY, maxX - minX, maxY - minY); return segs; } + + /** + * Returns the ShapeCache for the calling thread. + * + * @return the ShapeCache for the calling thread + */ + private ShapeCache getShapeCache() + { + ShapeCache sc = (ShapeCache) shapeCache.get(); + if (sc == null) + { + sc = new ShapeCache(); + shapeCache.set(sc); + } + return sc; + } } |