| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.graphics; |
| |
| import com.android.ide.common.rendering.api.LayoutLog; |
| import com.android.layoutlib.bridge.Bridge; |
| import com.android.layoutlib.bridge.impl.DelegateManager; |
| import com.android.layoutlib.bridge.impl.GcSnapshot; |
| import com.android.layoutlib.bridge.impl.PorterDuffUtility; |
| import com.android.ninepatch.NinePatchChunk; |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.annotation.Nullable; |
| import android.text.TextUtils; |
| |
| import java.awt.*; |
| import java.awt.geom.AffineTransform; |
| import java.awt.geom.Arc2D; |
| import java.awt.geom.Rectangle2D; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ColorModel; |
| import java.awt.image.DataBuffer; |
| |
| public class BaseCanvas_Delegate { |
| // ---- delegate manager ---- |
| protected static DelegateManager<BaseCanvas_Delegate> sManager = |
| new DelegateManager<>(BaseCanvas_Delegate.class); |
| |
| // ---- delegate helper data ---- |
| private final static boolean[] sBoolOut = new boolean[1]; |
| |
| |
| // ---- delegate data ---- |
| protected Bitmap_Delegate mBitmap; |
| protected GcSnapshot mSnapshot; |
| |
| // ---- Public Helper methods ---- |
| |
| protected BaseCanvas_Delegate(Bitmap_Delegate bitmap) { |
| mSnapshot = GcSnapshot.createDefaultSnapshot(mBitmap = bitmap); |
| } |
| |
| protected BaseCanvas_Delegate() { |
| mSnapshot = GcSnapshot.createDefaultSnapshot(null /*image*/); |
| } |
| |
| /** |
| * Disposes of the {@link Graphics2D} stack. |
| */ |
| protected void dispose() { |
| mSnapshot.dispose(); |
| } |
| |
| /** |
| * Returns the current {@link Graphics2D} used to draw. |
| */ |
| public GcSnapshot getSnapshot() { |
| return mSnapshot; |
| } |
| |
| // ---- native methods ---- |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawBitmap(long nativeCanvas, Bitmap bitmap, float left, float top, |
| long nativePaintOrZero, int canvasDensity, int screenDensity, int bitmapDensity) { |
| // get the delegate from the native int. |
| Bitmap_Delegate bitmapDelegate = Bitmap_Delegate.getDelegate(bitmap); |
| if (bitmapDelegate == null) { |
| return; |
| } |
| |
| BufferedImage image = bitmapDelegate.getImage(); |
| float right = left + image.getWidth(); |
| float bottom = top + image.getHeight(); |
| |
| drawBitmap(nativeCanvas, bitmapDelegate, nativePaintOrZero, |
| 0, 0, image.getWidth(), image.getHeight(), |
| (int)left, (int)top, (int)right, (int)bottom); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawBitmap(long nativeCanvas, Bitmap bitmap, float srcLeft, float srcTop, |
| float srcRight, float srcBottom, float dstLeft, float dstTop, float dstRight, |
| float dstBottom, long nativePaintOrZero, int screenDensity, int bitmapDensity) { |
| // get the delegate from the native int. |
| Bitmap_Delegate bitmapDelegate = Bitmap_Delegate.getDelegate(bitmap); |
| if (bitmapDelegate == null) { |
| return; |
| } |
| |
| drawBitmap(nativeCanvas, bitmapDelegate, nativePaintOrZero, (int) srcLeft, (int) srcTop, |
| (int) srcRight, (int) srcBottom, (int) dstLeft, (int) dstTop, (int) dstRight, |
| (int) dstBottom); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawBitmap(long nativeCanvas, int[] colors, int offset, int stride, |
| final float x, final float y, int width, int height, boolean hasAlpha, |
| long nativePaintOrZero) { |
| // create a temp BufferedImage containing the content. |
| final BufferedImage image = new BufferedImage(width, height, |
| hasAlpha ? BufferedImage.TYPE_INT_ARGB : BufferedImage.TYPE_INT_RGB); |
| image.setRGB(0, 0, width, height, colors, offset, stride); |
| |
| draw(nativeCanvas, nativePaintOrZero, true /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paint) -> { |
| if (paint != null && paint.isFilterBitmap()) { |
| graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, |
| RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| } |
| |
| graphics.drawImage(image, (int) x, (int) y, null); |
| }); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawColor(long nativeCanvas, final int color, final int mode) { |
| // get the delegate from the native int. |
| BaseCanvas_Delegate canvasDelegate = sManager.getDelegate(nativeCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| final int w = canvasDelegate.mBitmap.getImage().getWidth(); |
| final int h = canvasDelegate.mBitmap.getImage().getHeight(); |
| draw(nativeCanvas, (graphics, paint) -> { |
| // reset its transform just in case |
| graphics.setTransform(new AffineTransform()); |
| |
| // set the color |
| graphics.setColor(new java.awt.Color(color, true /*alpha*/)); |
| |
| Composite composite = PorterDuffUtility.getComposite( |
| PorterDuffUtility.getPorterDuffMode(mode), 0xFF); |
| if (composite != null) { |
| graphics.setComposite(composite); |
| } |
| |
| graphics.fillRect(0, 0, w, h); |
| }); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawPaint(long nativeCanvas, long paint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Canvas.drawPaint is not supported.", null, null /*data*/); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawPoint(long nativeCanvas, float x, float y, |
| long nativePaint) { |
| // TODO: need to support the attribute (e.g. stroke width) of paint |
| draw(nativeCanvas, nativePaint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> graphics.fillRect((int)x, (int)y, 1, 1)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawPoints(long nativeCanvas, float[] pts, int offset, int count, |
| long nativePaint) { |
| if (offset < 0 || count < 0 || offset + count > pts.length) { |
| throw new IllegalArgumentException("Invalid argument set"); |
| } |
| // ignore the last point if the count is odd (It means it is not paired). |
| count = (count >> 1) << 1; |
| for (int i = offset; i < offset + count; i += 2) { |
| nDrawPoint(nativeCanvas, pts[i], pts[i + 1], nativePaint); |
| } |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawLine(long nativeCanvas, |
| final float startX, final float startY, final float stopX, final float stopY, |
| long paint) { |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> graphics.drawLine((int)startX, (int)startY, (int)stopX, (int)stopY)); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawLines(long nativeCanvas, |
| final float[] pts, final int offset, final int count, |
| long nativePaint) { |
| draw(nativeCanvas, nativePaint, false /*compositeOnly*/, |
| false /*forceSrcMode*/, (graphics, paintDelegate) -> { |
| for (int i = 0; i < count; i += 4) { |
| graphics.drawLine((int) pts[i + offset], (int) pts[i + offset + 1], |
| (int) pts[i + offset + 2], (int) pts[i + offset + 3]); |
| } |
| }); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawRect(long nativeCanvas, |
| final float left, final float top, final float right, final float bottom, long paint) { |
| |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| int style = paintDelegate.getStyle(); |
| |
| // draw |
| if (style == Paint.Style.FILL.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.fillRect((int)left, (int)top, |
| (int)(right-left), (int)(bottom-top)); |
| } |
| |
| if (style == Paint.Style.STROKE.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.drawRect((int)left, (int)top, |
| (int)(right-left), (int)(bottom-top)); |
| } |
| }); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawOval(long nativeCanvas, final float left, |
| final float top, final float right, final float bottom, long paint) { |
| if (right > left && bottom > top) { |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| int style = paintDelegate.getStyle(); |
| |
| // draw |
| if (style == Paint.Style.FILL.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.fillOval((int)left, (int)top, |
| (int)(right - left), (int)(bottom - top)); |
| } |
| |
| if (style == Paint.Style.STROKE.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.drawOval((int)left, (int)top, |
| (int)(right - left), (int)(bottom - top)); |
| } |
| }); |
| } |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawCircle(long nativeCanvas, |
| float cx, float cy, float radius, long paint) { |
| nDrawOval(nativeCanvas, |
| cx - radius, cy - radius, cx + radius, cy + radius, |
| paint); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawArc(long nativeCanvas, |
| final float left, final float top, final float right, final float bottom, |
| final float startAngle, final float sweep, |
| final boolean useCenter, long paint) { |
| if (right > left && bottom > top) { |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| int style = paintDelegate.getStyle(); |
| |
| Arc2D.Float arc = new Arc2D.Float( |
| left, top, right - left, bottom - top, |
| -startAngle, -sweep, |
| useCenter ? Arc2D.PIE : Arc2D.OPEN); |
| |
| // draw |
| if (style == Paint.Style.FILL.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.fill(arc); |
| } |
| |
| if (style == Paint.Style.STROKE.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.draw(arc); |
| } |
| }); |
| } |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawRoundRect(long nativeCanvas, |
| final float left, final float top, final float right, final float bottom, |
| final float rx, final float ry, long paint) { |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| int style = paintDelegate.getStyle(); |
| |
| // draw |
| if (style == Paint.Style.FILL.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.fillRoundRect( |
| (int)left, (int)top, |
| (int)(right - left), (int)(bottom - top), |
| 2 * (int)rx, 2 * (int)ry); |
| } |
| |
| if (style == Paint.Style.STROKE.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.drawRoundRect( |
| (int)left, (int)top, |
| (int)(right - left), (int)(bottom - top), |
| 2 * (int)rx, 2 * (int)ry); |
| } |
| }); |
| } |
| |
| @LayoutlibDelegate |
| public static void nDrawPath(long nativeCanvas, long path, long paint) { |
| final Path_Delegate pathDelegate = Path_Delegate.getDelegate(path); |
| if (pathDelegate == null) { |
| return; |
| } |
| |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| Shape shape = pathDelegate.getJavaShape(); |
| Rectangle2D bounds = shape.getBounds2D(); |
| if (bounds.isEmpty()) { |
| // Apple JRE 1.6 doesn't like drawing empty shapes. |
| // http://b.android.com/178278 |
| |
| if (pathDelegate.isEmpty()) { |
| // This means that the path doesn't have any lines or curves so |
| // nothing to draw. |
| return; |
| } |
| |
| // The stroke width is not consider for the size of the bounds so, |
| // for example, a horizontal line, would be considered as an empty |
| // rectangle. |
| // If the strokeWidth is not 0, we use it to consider the size of the |
| // path as well. |
| float strokeWidth = paintDelegate.getStrokeWidth(); |
| if (strokeWidth <= 0.0f) { |
| return; |
| } |
| bounds.setRect(bounds.getX(), bounds.getY(), |
| Math.max(strokeWidth, bounds.getWidth()), |
| Math.max(strokeWidth, bounds.getHeight())); |
| } |
| |
| int style = paintDelegate.getStyle(); |
| |
| if (style == Paint.Style.FILL.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.fill(shape); |
| } |
| |
| if (style == Paint.Style.STROKE.nativeInt || |
| style == Paint.Style.FILL_AND_STROKE.nativeInt) { |
| graphics.draw(shape); |
| } |
| }); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawRegion(long nativeCanvas, long nativeRegion, |
| long nativePaint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Some canvas paths may not be drawn", null, null); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawNinePatch(long nativeCanvas, long nativeBitmap, long ninePatch, |
| final float dstLeft, final float dstTop, final float dstRight, final float dstBottom, |
| long nativePaintOrZero, final int screenDensity, final int bitmapDensity) { |
| |
| // get the delegate from the native int. |
| final Bitmap_Delegate bitmapDelegate = Bitmap_Delegate.getDelegate(nativeBitmap); |
| if (bitmapDelegate == null) { |
| return; |
| } |
| |
| byte[] c = NinePatch_Delegate.getChunk(ninePatch); |
| if (c == null) { |
| // not a 9-patch? |
| BufferedImage image = bitmapDelegate.getImage(); |
| drawBitmap(nativeCanvas, bitmapDelegate, nativePaintOrZero, 0, 0, image.getWidth(), |
| image.getHeight(), (int) dstLeft, (int) dstTop, (int) dstRight, |
| (int) dstBottom); |
| return; |
| } |
| |
| final NinePatchChunk chunkObject = NinePatch_Delegate.getChunk(c); |
| if (chunkObject == null) { |
| return; |
| } |
| |
| Canvas_Delegate canvasDelegate = Canvas_Delegate.getDelegate(nativeCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| // this one can be null |
| Paint_Delegate paintDelegate = Paint_Delegate.getDelegate(nativePaintOrZero); |
| |
| canvasDelegate.getSnapshot().draw(new GcSnapshot.Drawable() { |
| @Override |
| public void draw(Graphics2D graphics, Paint_Delegate paint) { |
| chunkObject.draw(bitmapDelegate.getImage(), graphics, (int) dstLeft, (int) dstTop, |
| (int) (dstRight - dstLeft), (int) (dstBottom - dstTop), screenDensity, |
| bitmapDensity); |
| } |
| }, paintDelegate, true, false); |
| |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawBitmapMatrix(long nCanvas, Bitmap bitmap, |
| long nMatrix, long nPaint) { |
| // get the delegate from the native int. |
| BaseCanvas_Delegate canvasDelegate = sManager.getDelegate(nCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| // get the delegate from the native int, which can be null |
| Paint_Delegate paintDelegate = Paint_Delegate.getDelegate(nPaint); |
| |
| // get the delegate from the native int. |
| Bitmap_Delegate bitmapDelegate = Bitmap_Delegate.getDelegate(bitmap); |
| if (bitmapDelegate == null) { |
| return; |
| } |
| |
| final BufferedImage image = getImageToDraw(bitmapDelegate, paintDelegate, sBoolOut); |
| |
| Matrix_Delegate matrixDelegate = Matrix_Delegate.getDelegate(nMatrix); |
| if (matrixDelegate == null) { |
| return; |
| } |
| |
| final AffineTransform mtx = matrixDelegate.getAffineTransform(); |
| |
| canvasDelegate.getSnapshot().draw((graphics, paint) -> { |
| if (paint != null && paint.isFilterBitmap()) { |
| graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, |
| RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| } |
| |
| //FIXME add support for canvas, screen and bitmap densities. |
| graphics.drawImage(image, mtx, null); |
| }, paintDelegate, true /*compositeOnly*/, false /*forceSrcMode*/); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawBitmapMesh(long nCanvas, Bitmap bitmap, |
| int meshWidth, int meshHeight, float[] verts, int vertOffset, int[] colors, |
| int colorOffset, long nPaint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Canvas.drawBitmapMesh is not supported.", null, null /*data*/); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawVertices(long nCanvas, int mode, int n, |
| float[] verts, int vertOffset, |
| float[] texs, int texOffset, |
| int[] colors, int colorOffset, |
| short[] indices, int indexOffset, |
| int indexCount, long nPaint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Canvas.drawVertices is not supported.", null, null /*data*/); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawText(long nativeCanvas, char[] text, int index, int count, |
| float startX, float startY, int flags, long paint) { |
| drawText(nativeCanvas, text, index, count, startX, startY, flags, |
| paint); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawText(long nativeCanvas, String text, |
| int start, int end, float x, float y, final int flags, long paint) { |
| int count = end - start; |
| char[] buffer = TemporaryBuffer.obtain(count); |
| TextUtils.getChars(text, start, end, buffer, 0); |
| |
| nDrawText(nativeCanvas, buffer, 0, count, x, y, flags, paint); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawTextRun(long nativeCanvas, String text, |
| int start, int end, int contextStart, int contextEnd, |
| float x, float y, boolean isRtl, long paint) { |
| int count = end - start; |
| char[] buffer = TemporaryBuffer.obtain(count); |
| TextUtils.getChars(text, start, end, buffer, 0); |
| |
| drawText(nativeCanvas, buffer, 0, count, x, y, isRtl ? Paint.BIDI_RTL : Paint.BIDI_LTR, |
| paint); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawTextRun(long nativeCanvas, char[] text, |
| int start, int count, int contextStart, int contextCount, |
| float x, float y, boolean isRtl, long paint, |
| long nativeMeasuredText, int measuredTextOffset) { |
| drawText(nativeCanvas, text, start, count, x, y, isRtl ? Paint.BIDI_RTL : Paint.BIDI_LTR, paint); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawTextOnPath(long nativeCanvas, |
| char[] text, int index, |
| int count, long path, |
| float hOffset, |
| float vOffset, int bidiFlags, |
| long paint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Canvas.drawTextOnPath is not supported.", null, null /*data*/); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static void nDrawTextOnPath(long nativeCanvas, |
| String text, long path, |
| float hOffset, |
| float vOffset, |
| int bidiFlags, long paint) { |
| // FIXME |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_UNSUPPORTED, |
| "Canvas.drawTextOnPath is not supported.", null, null /*data*/); |
| } |
| |
| // ---- Private delegate/helper methods ---- |
| |
| /** |
| * Executes a {@link GcSnapshot.Drawable} with a given canvas and paint. |
| * <p>Note that the drawable may actually be executed several times if there are |
| * layers involved (see {@link #saveLayer(RectF, Paint_Delegate, int)}. |
| */ |
| private static void draw(long nCanvas, long nPaint, boolean compositeOnly, boolean forceSrcMode, |
| GcSnapshot.Drawable drawable) { |
| // get the delegate from the native int. |
| BaseCanvas_Delegate canvasDelegate = sManager.getDelegate(nCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| // get the paint which can be null if nPaint is 0; |
| Paint_Delegate paintDelegate = Paint_Delegate.getDelegate(nPaint); |
| |
| canvasDelegate.getSnapshot().draw(drawable, paintDelegate, compositeOnly, forceSrcMode); |
| } |
| |
| /** |
| * Executes a {@link GcSnapshot.Drawable} with a given canvas. No paint object will be provided |
| * to {@link GcSnapshot.Drawable#draw(Graphics2D, Paint_Delegate)}. |
| * <p>Note that the drawable may actually be executed several times if there are |
| * layers involved (see {@link #saveLayer(RectF, Paint_Delegate, int)}. |
| */ |
| private static void draw(long nCanvas, GcSnapshot.Drawable drawable) { |
| // get the delegate from the native int. |
| BaseCanvas_Delegate canvasDelegate = sManager.getDelegate(nCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| canvasDelegate.mSnapshot.draw(drawable); |
| } |
| |
| private static void drawText(long nativeCanvas, final char[] text, final int index, |
| final int count, final float startX, final float startY, final int bidiFlags, |
| long paint) { |
| |
| draw(nativeCanvas, paint, false /*compositeOnly*/, false /*forceSrcMode*/, |
| (graphics, paintDelegate) -> { |
| // WARNING: the logic in this method is similar to Paint_Delegate.measureText. |
| // Any change to this method should be reflected in Paint.measureText |
| |
| // Paint.TextAlign indicates how the text is positioned relative to X. |
| // LEFT is the default and there's nothing to do. |
| float x = startX; |
| int limit = index + count; |
| if (paintDelegate.getTextAlign() != Paint.Align.LEFT.nativeInt) { |
| RectF bounds = |
| paintDelegate.measureText(text, index, count, null, 0, bidiFlags); |
| float m = bounds.right - bounds.left; |
| if (paintDelegate.getTextAlign() == Paint.Align.CENTER.nativeInt) { |
| x -= m / 2; |
| } else if (paintDelegate.getTextAlign() == Paint.Align.RIGHT.nativeInt) { |
| x -= m; |
| } |
| } |
| |
| new BidiRenderer(graphics, paintDelegate, text).setRenderLocation(x, |
| startY).renderText(index, limit, bidiFlags, null, 0, true); |
| }); |
| } |
| |
| private static void drawBitmap(long nativeCanvas, Bitmap_Delegate bitmap, |
| long nativePaintOrZero, final int sleft, final int stop, final int sright, |
| final int sbottom, final int dleft, final int dtop, final int dright, |
| final int dbottom) { |
| // get the delegate from the native int. |
| BaseCanvas_Delegate canvasDelegate = sManager.getDelegate(nativeCanvas); |
| if (canvasDelegate == null) { |
| return; |
| } |
| |
| // get the paint, which could be null if the int is 0 |
| Paint_Delegate paintDelegate = Paint_Delegate.getDelegate(nativePaintOrZero); |
| |
| final BufferedImage image = getImageToDraw(bitmap, paintDelegate, sBoolOut); |
| |
| draw(nativeCanvas, nativePaintOrZero, true /*compositeOnly*/, sBoolOut[0], |
| (graphics, paint) -> { |
| if (paint != null && paint.isFilterBitmap()) { |
| graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, |
| RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| } |
| |
| //FIXME add support for canvas, screen and bitmap densities. |
| graphics.drawImage(image, dleft, dtop, dright, dbottom, sleft, stop, sright, |
| sbottom, null); |
| }); |
| } |
| |
| /** |
| * Returns a BufferedImage ready for drawing, based on the bitmap and paint delegate. |
| * The image returns, through a 1-size boolean array, whether the drawing code should |
| * use a SRC composite no matter what the paint says. |
| * |
| * @param bitmap the bitmap |
| * @param paint the paint that will be used to draw |
| * @param forceSrcMode whether the composite will have to be SRC |
| * @return the image to draw |
| */ |
| private static BufferedImage getImageToDraw(Bitmap_Delegate bitmap, Paint_Delegate paint, |
| boolean[] forceSrcMode) { |
| BufferedImage image = bitmap.getImage(); |
| forceSrcMode[0] = false; |
| |
| // if the bitmap config is alpha_8, then we erase all color value from it |
| // before drawing it or apply the texture from the shader if present. |
| if (bitmap.getConfig() == Bitmap.Config.ALPHA_8) { |
| Shader_Delegate shader = paint.getShader(); |
| java.awt.Paint javaPaint = null; |
| if (shader instanceof BitmapShader_Delegate) { |
| javaPaint = shader.getJavaPaint(); |
| } |
| |
| fixAlpha8Bitmap(image, javaPaint); |
| } else if (!bitmap.hasAlpha()) { |
| // hasAlpha is merely a rendering hint. There can in fact be alpha values |
| // in the bitmap but it should be ignored at drawing time. |
| // There is two ways to do this: |
| // - override the composite to be SRC. This can only be used if the composite |
| // was going to be SRC or SRC_OVER in the first place |
| // - Create a different bitmap to draw in which all the alpha channel values is set |
| // to 0xFF. |
| if (paint != null) { |
| PorterDuff.Mode mode = PorterDuff.intToMode(paint.getPorterDuffMode()); |
| |
| forceSrcMode[0] = mode == PorterDuff.Mode.SRC_OVER || mode == PorterDuff.Mode.SRC; |
| } |
| |
| // if we can't force SRC mode, then create a temp bitmap of TYPE_RGB |
| if (!forceSrcMode[0]) { |
| image = Bitmap_Delegate.createCopy(image, BufferedImage.TYPE_INT_RGB, 0xFF); |
| } |
| } |
| |
| return image; |
| } |
| |
| /** |
| * This method will apply the correct color to the passed "only alpha" image. Colors on the |
| * passed image will be destroyed. |
| * If the passed javaPaint is null, the color will be set to 0. If a paint is passed, it will |
| * be used to obtain the color that will be applied. |
| * <p/> |
| * This will destroy the passed image color channel. |
| */ |
| private static void fixAlpha8Bitmap(final BufferedImage image, |
| @Nullable java.awt.Paint javaPaint) { |
| int w = image.getWidth(); |
| int h = image.getHeight(); |
| |
| DataBuffer texture = null; |
| if (javaPaint != null) { |
| PaintContext context = javaPaint.createContext(ColorModel.getRGBdefault(), null, null, |
| new AffineTransform(), null); |
| texture = context.getRaster(0, 0, w, h).getDataBuffer(); |
| } |
| |
| int[] argb = new int[w * h]; |
| image.getRGB(0, 0, image.getWidth(), image.getHeight(), argb, 0, image.getWidth()); |
| |
| final int length = argb.length; |
| for (int i = 0; i < length; i++) { |
| argb[i] &= 0xFF000000; |
| if (texture != null) { |
| argb[i] |= texture.getElem(i) & 0x00FFFFFF; |
| } |
| } |
| |
| image.setRGB(0, 0, w, h, argb, 0, w); |
| } |
| |
| protected int save(int saveFlags) { |
| // get the current save count |
| int count = mSnapshot.size(); |
| |
| mSnapshot = mSnapshot.save(saveFlags); |
| |
| // return the old save count |
| return count; |
| } |
| |
| protected int saveLayerAlpha(RectF rect, int alpha, int saveFlags) { |
| Paint_Delegate paint = new Paint_Delegate(); |
| paint.setAlpha(alpha); |
| return saveLayer(rect, paint, saveFlags); |
| } |
| |
| protected int saveLayer(RectF rect, Paint_Delegate paint, int saveFlags) { |
| // get the current save count |
| int count = mSnapshot.size(); |
| |
| mSnapshot = mSnapshot.saveLayer(rect, paint, saveFlags); |
| |
| // return the old save count |
| return count; |
| } |
| |
| /** |
| * Restores the {@link GcSnapshot} to <var>saveCount</var> |
| * @param saveCount the saveCount |
| */ |
| protected void restoreTo(int saveCount) { |
| mSnapshot = mSnapshot.restoreTo(saveCount); |
| } |
| |
| /** |
| * Restores the top {@link GcSnapshot} |
| */ |
| protected void restore() { |
| mSnapshot = mSnapshot.restore(); |
| } |
| |
| protected boolean clipRect(float left, float top, float right, float bottom, int regionOp) { |
| return mSnapshot.clipRect(left, top, right, bottom, regionOp); |
| } |
| } |