/*
* Copyright (C) 2010-2011 Geometer Plus <contact@geometerplus.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.geometerplus.android.fbreader.image;
import android.app.Activity;
import android.graphics.*;
import android.net.Uri;
import android.os.Bundle;
import android.view.*;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
import org.geometerplus.zlibrary.core.image.*;
import org.geometerplus.zlibrary.ui.androidfly.image.ZLAndroidImageData;
import org.geometerplus.zlibrary.ui.androidfly.library.ZLAndroidApplication;
public class ImageViewActivity extends Activity {
Bitmap myBitmap;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
requestWindowFeature(Window.FEATURE_NO_TITLE);
final ZLAndroidApplication application = ZLAndroidApplication.Instance();
final boolean showStatusBar = application.ShowStatusBarOption.getValue();
getWindow().setFlags(
WindowManager.LayoutParams.FLAG_FULLSCREEN,
showStatusBar ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN
);
Thread.setDefaultUncaughtExceptionHandler(
new org.geometerplus.zlibrary.ui.androidfly.library.UncaughtExceptionHandler(this)
);
setContentView(new ImageView());
final Uri uri = getIntent().getData();
if (ZLFileImage.SCHEME.equals(uri.getScheme())) {
try {
final String[] data = uri.getPath().split("\000");
final ZLFileImage image = new ZLFileImage(
"image/auto",
ZLFile.createFileByPath(data[0]),
Integer.parseInt(data[1]),
Integer.parseInt(data[2])
);
final ZLImageData imageData = ZLImageManager.Instance().getImageData(image);
myBitmap = ((ZLAndroidImageData)imageData).getFullSizeBitmap();
} catch (Exception e) {
// TODO: error message (?)
finish();
}
} else {
// TODO: error message (?)
finish();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (myBitmap != null) {
myBitmap.recycle();
}
myBitmap = null;
}
private class ImageView extends View {
private final Paint myPaint = new Paint();
private int myDx;
private int myDy;
ImageView() {
super(ImageViewActivity.this);
}
@Override
protected void onDraw(final Canvas canvas) {
myPaint.setColor(Color.rgb(128, 128, 128));
final int w = getWidth();
final int h = getHeight();
canvas.drawRect(0, 0, w, h, myPaint);
if (myBitmap == null || myBitmap.isRecycled()) {
return;
}
final int bw = myBitmap.getWidth();
final int bh = myBitmap.getHeight();
final int left, top;
if (bw <= w) {
left = (w - bw) / 2;
} else {
left = Math.max(w - bw, Math.min(0, (w - bw) / 2 + myDx));
}
if (bh <= h) {
top = (h - bh) / 2;
} else {
top = Math.max(h - bh, Math.min(0, (h - bh) / 2 + myDy));
}
canvas.drawBitmap(myBitmap, left, top, myPaint);
}
private void shift(int dx, int dy) {
if (myBitmap == null || myBitmap.isRecycled()) {
return;
}
final int w = getWidth();
final int h = getHeight();
final int bw = myBitmap.getWidth();
final int bh = myBitmap.getHeight();
final int newDx, newDy;
if (w < bw) {
final int delta = bw - w;
newDx = Math.max(-delta, Math.min(delta, myDx + dx));
} else {
newDx = myDx;
}
if (h < bh) {
final int delta = bh - h;
newDy = Math.max(-delta, Math.min(delta, myDy + dy));
} else {
newDy = myDy;
}
if (newDx != myDx || newDy != myDy) {
myDx = newDx;
myDy = newDy;
postInvalidate();
}
}
private boolean myMotionControl;
private int mySavedX;
private int mySavedY;
@Override
public boolean onTouchEvent(MotionEvent event) {
int x = (int)event.getX();
int y = (int)event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
myMotionControl = false;
break;
case MotionEvent.ACTION_DOWN:
myMotionControl = true;
mySavedX = x;
mySavedY = y;
break;
case MotionEvent.ACTION_MOVE:
if (myMotionControl) {
shift(x - mySavedX, y - mySavedY);
}
myMotionControl = true;
mySavedX = x;
mySavedY = y;
break;
}
return true;
}
}
}