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/*
* 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 {
// FIXME: clone() should not be needed. Remove when we fix geometry.
ImageFilterGeometry filter = (ImageFilterGeometry) super.clone();
return filter;
}
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 void useRepresentation(FilterRepresentation representation) {
mGeometry = (GeometryMetadata) representation;
}
@Override
public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
// 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;
}
}
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