| /* |
| * Copyright (C) 2012 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 com.android.gallery3d.filtershow.filters; |
| |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Matrix; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| |
| import com.android.gallery3d.filtershow.CropExtras; |
| import com.android.gallery3d.filtershow.imageshow.GeometryMath; |
| import com.android.gallery3d.filtershow.imageshow.GeometryMetadata; |
| |
| public class ImageFilterGeometry extends ImageFilter { |
| private final Bitmap.Config mConfig = Bitmap.Config.ARGB_8888; |
| private GeometryMetadata mGeometry = null; |
| private static final String LOGTAG = "ImageFilterGeometry"; |
| private static final boolean LOGV = false; |
| private static final int BOTH = 3; |
| private static final int VERTICAL = 2; |
| private static final int HORIZONTAL = 1; |
| private static final int NINETY = 1; |
| private static final int ONE_EIGHTY = 2; |
| private static final int TWO_SEVENTY = 3; |
| |
| public ImageFilterGeometry() { |
| mName = "Geometry"; |
| } |
| |
| @Override |
| public ImageFilter clone() throws CloneNotSupportedException { |
| ImageFilterGeometry filter = (ImageFilterGeometry) super.clone(); |
| return filter; |
| } |
| |
| public void setGeometryMetadata(GeometryMetadata m) { |
| mGeometry = m; |
| } |
| |
| native protected void nativeApplyFilterFlip(Bitmap src, int srcWidth, int srcHeight, |
| Bitmap dst, int dstWidth, int dstHeight, int flip); |
| |
| native protected void nativeApplyFilterRotate(Bitmap src, int srcWidth, int srcHeight, |
| Bitmap dst, int dstWidth, int dstHeight, int rotate); |
| |
| native protected void nativeApplyFilterCrop(Bitmap src, int srcWidth, int srcHeight, |
| Bitmap dst, int dstWidth, int dstHeight, int offsetWidth, int offsetHeight); |
| |
| native protected void nativeApplyFilterStraighten(Bitmap src, int srcWidth, int srcHeight, |
| Bitmap dst, int dstWidth, int dstHeight, float straightenAngle); |
| |
| @Override |
| public Bitmap apply(Bitmap bitmap, float scaleFactor, boolean highQuality) { |
| // TODO: implement bilinear or bicubic here... for now, just use |
| // canvas to do a simple implementation... |
| // TODO: and be more memory efficient! (do it in native?) |
| |
| CropExtras extras = mGeometry.getCropExtras(); |
| boolean useExtras = mGeometry.getUseCropExtrasFlag(); |
| int outputX = 0; |
| int outputY = 0; |
| boolean s = false; |
| if (extras != null && useExtras){ |
| outputX = extras.getOutputX(); |
| outputY = extras.getOutputY(); |
| s = extras.getScaleUp(); |
| } |
| |
| |
| Rect cropBounds = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); |
| RectF crop = mGeometry.getCropBounds(bitmap); |
| if (crop.width() > 0 && crop.height() > 0) |
| cropBounds = GeometryMath.roundNearest(crop); |
| |
| int width = cropBounds.width(); |
| int height = cropBounds.height(); |
| |
| if (mGeometry.hasSwitchedWidthHeight()){ |
| int temp = width; |
| width = height; |
| height = temp; |
| } |
| |
| if(outputX <= 0 || outputY <= 0){ |
| outputX = width; |
| outputY = height; |
| } |
| |
| float scaleX = 1; |
| float scaleY = 1; |
| if (s){ |
| scaleX = (float) outputX / width; |
| scaleY = (float) outputY / height; |
| } |
| |
| Bitmap temp = null; |
| temp = Bitmap.createBitmap(outputX, outputY, mConfig); |
| |
| float[] displayCenter = { |
| temp.getWidth() / 2f, temp.getHeight() / 2f |
| }; |
| |
| Matrix m1 = mGeometry.buildTotalXform(bitmap.getWidth(), bitmap.getHeight(), displayCenter); |
| |
| m1.postScale(scaleX, scaleY, displayCenter[0], displayCenter[1]); |
| |
| Canvas canvas = new Canvas(temp); |
| Paint paint = new Paint(); |
| paint.setAntiAlias(true); |
| paint.setFilterBitmap(true); |
| paint.setDither(true); |
| canvas.drawBitmap(bitmap, m1, paint); |
| return temp; |
| } |
| |
| } |