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/*
* Copyright (C) 2008 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.google.android.test.dpi;
import android.app.Activity;
import android.app.ActivityThread;
import android.app.Application;
import android.os.Bundle;
import android.graphics.BitmapFactory;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.ScrollView;
import android.view.View;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.CompatibilityInfo;
import android.util.DisplayMetrics;
public class DpiTestActivity extends Activity {
public DpiTestActivity() {
super();
init(false);
}
public DpiTestActivity(boolean noCompat) {
super();
init(noCompat);
}
public void init(boolean noCompat) {
try {
// This is all a dirty hack. Don't think a real application should
// be doing it.
Application app = ActivityThread.currentActivityThread().getApplication();
ApplicationInfo ai = app.getPackageManager().getApplicationInfo(
"com.google.android.test.dpi",
PackageManager.GET_SUPPORTS_DENSITIES);
if (noCompat) {
ai.flags |= ApplicationInfo.FLAG_SUPPORTS_LARGE_SCREENS
| ApplicationInfo.FLAG_SUPPORTS_NORMAL_SCREENS
| ApplicationInfo.FLAG_SUPPORTS_SMALL_SCREENS;
ai.supportsDensities = new int[] { ApplicationInfo.ANY_DENSITY };
app.getResources().setCompatibilityInfo(new CompatibilityInfo(ai));
}
} catch (PackageManager.NameNotFoundException e) {
throw new RuntimeException("ouch", e);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setTitle(R.string.act_title);
LinearLayout root = new LinearLayout(this);
root.setOrientation(LinearLayout.VERTICAL);
LinearLayout layout = new LinearLayout(this);
addBitmapDrawable(layout, R.drawable.logo120dpi, true);
addBitmapDrawable(layout, R.drawable.logo160dpi, true);
addBitmapDrawable(layout, R.drawable.logo240dpi, true);
addLabelToRoot(root, "Prescaled bitmap in drawable");
addChildToRoot(root, layout);
layout = new LinearLayout(this);
addBitmapDrawable(layout, R.drawable.logo120dpi, false);
addBitmapDrawable(layout, R.drawable.logo160dpi, false);
addBitmapDrawable(layout, R.drawable.logo240dpi, false);
addLabelToRoot(root, "Autoscaled bitmap in drawable");
addChildToRoot(root, layout);
layout = new LinearLayout(this);
addResourceDrawable(layout, R.drawable.logo120dpi);
addResourceDrawable(layout, R.drawable.logo160dpi);
addResourceDrawable(layout, R.drawable.logo240dpi);
addLabelToRoot(root, "Prescaled resource drawable");
addChildToRoot(root, layout);
layout = new LinearLayout(this);
addCanvasBitmap(layout, R.drawable.logo120dpi, true);
addCanvasBitmap(layout, R.drawable.logo160dpi, true);
addCanvasBitmap(layout, R.drawable.logo240dpi, true);
addLabelToRoot(root, "Prescaled bitmap");
addChildToRoot(root, layout);
layout = new LinearLayout(this);
addCanvasBitmap(layout, R.drawable.logo120dpi, false);
addCanvasBitmap(layout, R.drawable.logo160dpi, false);
addCanvasBitmap(layout, R.drawable.logo240dpi, false);
addLabelToRoot(root, "Autoscaled bitmap");
addChildToRoot(root, layout);
layout = new LinearLayout(this);
addResourceDrawable(layout, R.drawable.logonodpi120);
addResourceDrawable(layout, R.drawable.logonodpi160);
addResourceDrawable(layout, R.drawable.logonodpi240);
addLabelToRoot(root, "No-dpi resource drawable");
addChildToRoot(root, layout);
setContentView(scrollWrap(root));
}
private View scrollWrap(View view) {
ScrollView scroller = new ScrollView(this);
scroller.addView(view, new ScrollView.LayoutParams(ScrollView.LayoutParams.FILL_PARENT,
ScrollView.LayoutParams.FILL_PARENT));
return scroller;
}
private void addLabelToRoot(LinearLayout root, String text) {
TextView label = new TextView(this);
label.setText(text);
root.addView(label, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
}
private void addChildToRoot(LinearLayout root, LinearLayout layout) {
root.addView(layout, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
}
private void addBitmapDrawable(LinearLayout layout, int resource, boolean scale) {
Bitmap bitmap;
bitmap = loadAndPrintDpi(resource, scale);
View view = new View(this);
final BitmapDrawable d = new BitmapDrawable(bitmap);
if (!scale) d.setDensityScale(getResources().getDisplayMetrics());
view.setBackgroundDrawable(d);
view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
d.getIntrinsicHeight()));
layout.addView(view);
}
private void addResourceDrawable(LinearLayout layout, int resource) {
View view = new View(this);
final Drawable d = getResources().getDrawable(resource);
view.setBackgroundDrawable(d);
view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
d.getIntrinsicHeight()));
layout.addView(view);
}
private void addCanvasBitmap(LinearLayout layout, int resource, boolean scale) {
Bitmap bitmap;
bitmap = loadAndPrintDpi(resource, scale);
ScaledBitmapView view = new ScaledBitmapView(this, bitmap);
view.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
layout.addView(view);
}
private Bitmap loadAndPrintDpi(int id, boolean scale) {
Bitmap bitmap;
if (scale) {
bitmap = BitmapFactory.decodeResource(getResources(), id);
} else {
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inScaled = false;
bitmap = BitmapFactory.decodeResource(getResources(), id, opts);
}
return bitmap;
}
private class ScaledBitmapView extends View {
private Bitmap mBitmap;
public ScaledBitmapView(Context context, Bitmap bitmap) {
super(context);
mBitmap = bitmap;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
final DisplayMetrics metrics = getResources().getDisplayMetrics();
setMeasuredDimension(
mBitmap.getScaledWidth(metrics),
mBitmap.getScaledHeight(metrics));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawBitmap(mBitmap, 0.0f, 0.0f, null);
}
}
}
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