| /* |
| * 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.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; |
| |
| public class DpiTestActivity extends Activity { |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| 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); |
| |
| 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); |
| setMeasuredDimension(mBitmap.getScaledWidth(), mBitmap.getScaledHeight()); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| |
| canvas.drawBitmap(mBitmap, 0.0f, 0.0f, null); |
| } |
| } |
| } |