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/*
* Copyright (C) 2013 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.imageshow;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.util.AttributeSet;
import android.view.MotionEvent;
import com.android.gallery3d.filtershow.editors.EditorVignette;
import com.android.gallery3d.filtershow.filters.FilterVignetteRepresentation;
public class ImageVignette extends ImageShow {
private static final String LOGTAG = "ImageVignette";
private FilterVignetteRepresentation mVignetteRep;
private EditorVignette mEditorVignette;
private OvalSpaceAdapter mScreenOval = new OvalSpaceAdapter();
private int mActiveHandle = -1;
EclipseControl mElipse;
public ImageVignette(Context context) {
super(context);
mElipse = new EclipseControl(context);
}
public ImageVignette(Context context, AttributeSet attrs) {
super(context, attrs);
mElipse = new EclipseControl(context);
}
static class OvalSpaceAdapter implements Oval {
private Oval mOval;
Matrix mToScr;
Matrix mToImage;
int mImgWidth;
int mImgHeight;
float[] mTmp = new float[2];
float mTmpRadiusX;
float mTmpRadiusY;
public void setImageOval(Oval oval) {
mOval = oval;
}
public void setTransform(Matrix toScr, Matrix toImage, int imgWidth, int imgHeight) {
mToScr = toScr;
mToImage = toImage;
mImgWidth = imgWidth;
mImgHeight = imgHeight;
mTmpRadiusX = getRadiusX();
mTmpRadiusY = getRadiusY();
}
@Override
public void setCenter(float x, float y) {
mTmp[0] = x;
mTmp[1] = y;
mToImage.mapPoints(mTmp);
mOval.setCenter(mTmp[0] / mImgWidth, mTmp[1] / mImgHeight);
}
@Override
public void setRadius(float w, float h) {
mTmp[0] = mTmpRadiusX = w;
mTmp[1] = mTmpRadiusY = h;
mToImage.mapVectors(mTmp);
mOval.setRadius(mTmp[0] / mImgWidth, mTmp[1] / mImgHeight);
}
@Override
public float getCenterX() {
mTmp[0] = mOval.getCenterX() * mImgWidth;
mTmp[1] = mOval.getCenterY() * mImgHeight;
mToScr.mapPoints(mTmp);
return mTmp[0];
}
@Override
public float getCenterY() {
mTmp[0] = mOval.getCenterX() * mImgWidth;
mTmp[1] = mOval.getCenterY() * mImgHeight;
mToScr.mapPoints(mTmp);
return mTmp[1];
}
@Override
public float getRadiusX() {
mTmp[0] = mOval.getRadiusX() * mImgWidth;
mTmp[1] = mOval.getRadiusY() * mImgHeight;
mToScr.mapVectors(mTmp);
return Math.abs(mTmp[0]);
}
@Override
public float getRadiusY() {
mTmp[0] = mOval.getRadiusX() * mImgWidth;
mTmp[1] = mOval.getRadiusY() * mImgHeight;
mToScr.mapVectors(mTmp);
return Math.abs(mTmp[1]);
}
@Override
public void setRadiusY(float y) {
mTmp[0] = mTmpRadiusX;
mTmp[1] = mTmpRadiusY = y;
mToImage.mapVectors(mTmp);
mOval.setRadiusX(mTmp[0] / mImgWidth);
mOval.setRadiusY(mTmp[1] / mImgHeight);
}
@Override
public void setRadiusX(float x) {
mTmp[0] = mTmpRadiusX = x;
mTmp[1] = mTmpRadiusY;
mToImage.mapVectors(mTmp);
mOval.setRadiusX(mTmp[0] / mImgWidth);
mOval.setRadiusY(mTmp[1] / mImgHeight);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int w = MasterImage.getImage().getOriginalBounds().width();
int h = MasterImage.getImage().getOriginalBounds().height();
int mask = event.getActionMasked();
if (mActiveHandle == -1) {
if (MotionEvent.ACTION_DOWN != mask) {
return super.onTouchEvent(event);
}
if (event.getPointerCount() == 1) {
mActiveHandle = mElipse.getCloseHandle(event.getX(), event.getY());
}
if (mActiveHandle == -1) {
return super.onTouchEvent(event);
}
} else {
switch (mask) {
case MotionEvent.ACTION_UP:
mActiveHandle = -1;
break;
case MotionEvent.ACTION_DOWN:
break;
}
}
float x = event.getX();
float y = event.getY();
mElipse.setScrImageInfo(new Matrix(),
MasterImage.getImage().getOriginalBounds());
boolean didComputeEllipses = false;
switch (mask) {
case (MotionEvent.ACTION_DOWN):
mElipse.actionDown(x, y, mScreenOval);
break;
case (MotionEvent.ACTION_UP):
case (MotionEvent.ACTION_MOVE):
mElipse.actionMove(mActiveHandle, x, y, mScreenOval);
setRepresentation(mVignetteRep);
didComputeEllipses = true;
break;
}
if (!didComputeEllipses) {
computeEllipses();
}
invalidate();
return true;
}
public void setRepresentation(FilterVignetteRepresentation vignetteRep) {
mVignetteRep = vignetteRep;
mScreenOval.setImageOval(mVignetteRep);
computeEllipses();
}
public void computeEllipses() {
if (mVignetteRep == null) {
return;
}
float w = MasterImage.getImage().getOriginalBounds().width();
float h = MasterImage.getImage().getOriginalBounds().height();
Matrix toImg = getScreenToImageMatrix(false);
Matrix toScr = new Matrix();
toImg.invert(toScr);
mScreenOval.setTransform(toScr, toImg, (int) w, (int) h);
mElipse.setCenter(mScreenOval.getCenterX(), mScreenOval.getCenterY());
mElipse.setRadius(mScreenOval.getRadiusX(), mScreenOval.getRadiusY());
mEditorVignette.commitLocalRepresentation();
}
public void setEditor(EditorVignette editorVignette) {
mEditorVignette = editorVignette;
}
@Override
public void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
computeEllipses();
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (mVignetteRep == null) {
return;
}
float w = MasterImage.getImage().getOriginalBounds().width();
float h = MasterImage.getImage().getOriginalBounds().height();
Matrix toImg = getScreenToImageMatrix(false);
Matrix toScr = new Matrix();
toImg.invert(toScr);
mScreenOval.setTransform(toScr, toImg, (int) w, (int) h);
mElipse.setCenter(mScreenOval.getCenterX(), mScreenOval.getCenterY());
mElipse.setRadius(mScreenOval.getRadiusX(), mScreenOval.getRadiusY());
mElipse.draw(canvas);
}
}
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