| /* |
| * Copyright (C) 2010 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.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.graphics.Shader.TileMode; |
| |
| /** |
| * Delegate implementing the native methods of android.graphics.BitmapShader |
| * |
| * Through the layoutlib_create tool, the original native methods of BitmapShader have been |
| * replaced by calls to methods of the same name in this delegate class. |
| * |
| * This class behaves like the original native implementation, but in Java, keeping previously |
| * native data into its own objects and mapping them to int that are sent back and forth between |
| * it and the original BitmapShader class. |
| * |
| * Because this extends {@link Shader_Delegate}, there's no need to use a {@link DelegateManager}, |
| * as all the Shader classes will be added to the manager owned by {@link Shader_Delegate}. |
| * |
| * @see Shader_Delegate |
| * |
| */ |
| public class BitmapShader_Delegate extends Shader_Delegate { |
| |
| // ---- delegate data ---- |
| private java.awt.Paint mJavaPaint; |
| |
| // ---- Public Helper methods ---- |
| |
| @Override |
| public java.awt.Paint getJavaPaint() { |
| return mJavaPaint; |
| } |
| |
| @Override |
| public boolean isSupported() { |
| return true; |
| } |
| |
| @Override |
| public String getSupportMessage() { |
| // no message since isSupported returns true; |
| return null; |
| } |
| |
| // ---- native methods ---- |
| |
| @LayoutlibDelegate |
| /*package*/ static int nativeCreate(int native_bitmap, int shaderTileModeX, |
| int shaderTileModeY) { |
| Bitmap_Delegate bitmap = Bitmap_Delegate.getDelegate(native_bitmap); |
| if (bitmap == null) { |
| return 0; |
| } |
| |
| BitmapShader_Delegate newDelegate = new BitmapShader_Delegate( |
| bitmap.getImage(), |
| Shader_Delegate.getTileMode(shaderTileModeX), |
| Shader_Delegate.getTileMode(shaderTileModeY)); |
| return sManager.addNewDelegate(newDelegate); |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static int nativePostCreate(int native_shader, int native_bitmap, |
| int shaderTileModeX, int shaderTileModeY) { |
| // pass, not needed. |
| return 0; |
| } |
| |
| // ---- Private delegate/helper methods ---- |
| |
| private BitmapShader_Delegate(java.awt.image.BufferedImage image, |
| TileMode tileModeX, TileMode tileModeY) { |
| mJavaPaint = new BitmapShaderPaint(image, tileModeX, tileModeY); |
| } |
| |
| private class BitmapShaderPaint implements java.awt.Paint { |
| private final java.awt.image.BufferedImage mImage; |
| private final TileMode mTileModeX; |
| private final TileMode mTileModeY; |
| |
| BitmapShaderPaint(java.awt.image.BufferedImage image, |
| TileMode tileModeX, TileMode tileModeY) { |
| mImage = image; |
| mTileModeX = tileModeX; |
| mTileModeY = tileModeY; |
| } |
| |
| public java.awt.PaintContext createContext( |
| java.awt.image.ColorModel colorModel, |
| java.awt.Rectangle deviceBounds, |
| java.awt.geom.Rectangle2D userBounds, |
| java.awt.geom.AffineTransform xform, |
| java.awt.RenderingHints hints) { |
| |
| java.awt.geom.AffineTransform canvasMatrix; |
| try { |
| canvasMatrix = xform.createInverse(); |
| } catch (java.awt.geom.NoninvertibleTransformException e) { |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_MATRIX_INVERSE, |
| "Unable to inverse matrix in BitmapShader", e, null /*data*/); |
| canvasMatrix = new java.awt.geom.AffineTransform(); |
| } |
| |
| java.awt.geom.AffineTransform localMatrix = getLocalMatrix(); |
| try { |
| localMatrix = localMatrix.createInverse(); |
| } catch (java.awt.geom.NoninvertibleTransformException e) { |
| Bridge.getLog().fidelityWarning(LayoutLog.TAG_MATRIX_INVERSE, |
| "Unable to inverse matrix in BitmapShader", e, null /*data*/); |
| localMatrix = new java.awt.geom.AffineTransform(); |
| } |
| |
| return new BitmapShaderContext(canvasMatrix, localMatrix, colorModel); |
| } |
| |
| private class BitmapShaderContext implements java.awt.PaintContext { |
| |
| private final java.awt.geom.AffineTransform mCanvasMatrix; |
| private final java.awt.geom.AffineTransform mLocalMatrix; |
| private final java.awt.image.ColorModel mColorModel; |
| |
| public BitmapShaderContext( |
| java.awt.geom.AffineTransform canvasMatrix, |
| java.awt.geom.AffineTransform localMatrix, |
| java.awt.image.ColorModel colorModel) { |
| mCanvasMatrix = canvasMatrix; |
| mLocalMatrix = localMatrix; |
| mColorModel = colorModel; |
| } |
| |
| public void dispose() { |
| } |
| |
| public java.awt.image.ColorModel getColorModel() { |
| return mColorModel; |
| } |
| |
| public java.awt.image.Raster getRaster(int x, int y, int w, int h) { |
| java.awt.image.BufferedImage image = new java.awt.image.BufferedImage(w, h, |
| java.awt.image.BufferedImage.TYPE_INT_ARGB); |
| |
| int[] data = new int[w*h]; |
| |
| int index = 0; |
| float[] pt1 = new float[2]; |
| float[] pt2 = new float[2]; |
| for (int iy = 0 ; iy < h ; iy++) { |
| for (int ix = 0 ; ix < w ; ix++) { |
| // handle the canvas transform |
| pt1[0] = x + ix; |
| pt1[1] = y + iy; |
| mCanvasMatrix.transform(pt1, 0, pt2, 0, 1); |
| |
| // handle the local matrix. |
| pt1[0] = pt2[0]; |
| pt1[1] = pt2[1]; |
| mLocalMatrix.transform(pt1, 0, pt2, 0, 1); |
| |
| data[index++] = getColor(pt2[0], pt2[1]); |
| } |
| } |
| |
| image.setRGB(0 /*startX*/, 0 /*startY*/, w, h, data, 0 /*offset*/, w /*scansize*/); |
| |
| return image.getRaster(); |
| } |
| } |
| |
| /** |
| * Returns a color for an arbitrary point. |
| */ |
| private int getColor(float fx, float fy) { |
| int x = getCoordinate(Math.round(fx), mImage.getWidth(), mTileModeX); |
| int y = getCoordinate(Math.round(fy), mImage.getHeight(), mTileModeY); |
| |
| return mImage.getRGB(x, y); |
| } |
| |
| private int getCoordinate(int i, int size, TileMode mode) { |
| if (i < 0) { |
| switch (mode) { |
| case CLAMP: |
| i = 0; |
| break; |
| case REPEAT: |
| i = size - 1 - (-i % size); |
| break; |
| case MIRROR: |
| // this is the same as the positive side, just make the value positive |
| // first. |
| i = -i; |
| int count = i / size; |
| i = i % size; |
| |
| if ((count % 2) == 1) { |
| i = size - 1 - i; |
| } |
| break; |
| } |
| } else if (i >= size) { |
| switch (mode) { |
| case CLAMP: |
| i = size - 1; |
| break; |
| case REPEAT: |
| i = i % size; |
| break; |
| case MIRROR: |
| int count = i / size; |
| i = i % size; |
| |
| if ((count % 2) == 1) { |
| i = size - 1 - i; |
| } |
| break; |
| } |
| } |
| |
| return i; |
| } |
| |
| |
| public int getTransparency() { |
| return java.awt.Paint.TRANSLUCENT; |
| } |
| } |
| } |