1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.android.test.dpi;
18
19import android.app.Activity;
20import android.app.ActivityThread;
21import android.app.Application;
22import android.os.Bundle;
23import android.graphics.BitmapFactory;
24import android.graphics.Bitmap;
25import android.graphics.Canvas;
26import android.graphics.drawable.BitmapDrawable;
27import android.graphics.drawable.Drawable;
28import android.widget.LinearLayout;
29import android.widget.TextView;
30import android.widget.ScrollView;
31import android.view.LayoutInflater;
32import android.view.View;
33import android.content.Context;
34import android.content.pm.ApplicationInfo;
35import android.content.pm.PackageManager;
36import android.content.res.CompatibilityInfo;
37import android.util.DisplayMetrics;
38import android.util.Log;
39
40public class DpiTestActivity extends Activity {
41    public DpiTestActivity() {
42        super();
43        init(false);
44    }
45
46    public DpiTestActivity(boolean noCompat) {
47        super();
48        init(noCompat);
49    }
50
51    public void init(boolean noCompat) {
52        try {
53            // This is all a dirty hack.  Don't think a real application should
54            // be doing it.
55            Application app = ActivityThread.currentActivityThread().getApplication();
56            ApplicationInfo ai = app.getPackageManager().getApplicationInfo(
57                    "com.google.android.test.dpi", 0);
58            if (noCompat) {
59                ai.flags |= ApplicationInfo.FLAG_SUPPORTS_XLARGE_SCREENS
60                    | ApplicationInfo.FLAG_SUPPORTS_LARGE_SCREENS
61                    | ApplicationInfo.FLAG_SUPPORTS_NORMAL_SCREENS
62                    | ApplicationInfo.FLAG_SUPPORTS_SMALL_SCREENS
63                    | ApplicationInfo.FLAG_RESIZEABLE_FOR_SCREENS
64                    | ApplicationInfo.FLAG_SUPPORTS_SCREEN_DENSITIES;
65                app.getResources().setCompatibilityInfo(new CompatibilityInfo(ai,
66                        getResources().getConfiguration().screenLayout,
67                        getResources().getConfiguration().smallestScreenWidthDp, false));
68            }
69        } catch (PackageManager.NameNotFoundException e) {
70            throw new RuntimeException("ouch", e);
71        }
72    }
73
74    @Override
75    protected void onCreate(Bundle savedInstanceState) {
76        super.onCreate(savedInstanceState);
77
78        final LayoutInflater li = (LayoutInflater)getSystemService(
79                LAYOUT_INFLATER_SERVICE);
80
81        this.setTitle(R.string.act_title);
82        LinearLayout root = new LinearLayout(this);
83        root.setOrientation(LinearLayout.VERTICAL);
84
85        LinearLayout layout = new LinearLayout(this);
86        addBitmapDrawable(layout, R.drawable.logo120dpi, true);
87        addBitmapDrawable(layout, R.drawable.logo160dpi, true);
88        addBitmapDrawable(layout, R.drawable.logo240dpi, true);
89        addLabelToRoot(root, "Prescaled bitmap in drawable");
90        addChildToRoot(root, layout);
91
92        layout = new LinearLayout(this);
93        addBitmapDrawable(layout, R.drawable.logo120dpi, false);
94        addBitmapDrawable(layout, R.drawable.logo160dpi, false);
95        addBitmapDrawable(layout, R.drawable.logo240dpi, false);
96        addLabelToRoot(root, "Autoscaled bitmap in drawable");
97        addChildToRoot(root, layout);
98
99        layout = new LinearLayout(this);
100        addResourceDrawable(layout, R.drawable.logo120dpi);
101        addResourceDrawable(layout, R.drawable.logo160dpi);
102        addResourceDrawable(layout, R.drawable.logo240dpi);
103        addLabelToRoot(root, "Prescaled resource drawable");
104        addChildToRoot(root, layout);
105
106        layout = (LinearLayout)li.inflate(R.layout.image_views, null);
107        addLabelToRoot(root, "Inflated layout");
108        addChildToRoot(root, layout);
109
110        layout = (LinearLayout)li.inflate(R.layout.styled_image_views, null);
111        addLabelToRoot(root, "Inflated styled layout");
112        addChildToRoot(root, layout);
113
114        layout = new LinearLayout(this);
115        addCanvasBitmap(layout, R.drawable.logo120dpi, true);
116        addCanvasBitmap(layout, R.drawable.logo160dpi, true);
117        addCanvasBitmap(layout, R.drawable.logo240dpi, true);
118        addLabelToRoot(root, "Prescaled bitmap");
119        addChildToRoot(root, layout);
120
121        layout = new LinearLayout(this);
122        addCanvasBitmap(layout, R.drawable.logo120dpi, false);
123        addCanvasBitmap(layout, R.drawable.logo160dpi, false);
124        addCanvasBitmap(layout, R.drawable.logo240dpi, false);
125        addLabelToRoot(root, "Autoscaled bitmap");
126        addChildToRoot(root, layout);
127
128        layout = new LinearLayout(this);
129        addResourceDrawable(layout, R.drawable.logonodpi120);
130        addResourceDrawable(layout, R.drawable.logonodpi160);
131        addResourceDrawable(layout, R.drawable.logonodpi240);
132        addLabelToRoot(root, "No-dpi resource drawable");
133        addChildToRoot(root, layout);
134
135        layout = new LinearLayout(this);
136        addNinePatchResourceDrawable(layout, R.drawable.smlnpatch120dpi);
137        addNinePatchResourceDrawable(layout, R.drawable.smlnpatch160dpi);
138        addNinePatchResourceDrawable(layout, R.drawable.smlnpatch240dpi);
139        addLabelToRoot(root, "Prescaled 9-patch resource drawable");
140        addChildToRoot(root, layout);
141
142        setContentView(scrollWrap(root));
143    }
144
145    private View scrollWrap(View view) {
146        ScrollView scroller = new ScrollView(this);
147        scroller.addView(view, new ScrollView.LayoutParams(ScrollView.LayoutParams.MATCH_PARENT,
148                ScrollView.LayoutParams.MATCH_PARENT));
149        return scroller;
150    }
151
152    private void addLabelToRoot(LinearLayout root, String text) {
153        TextView label = new TextView(this);
154        label.setText(text);
155        root.addView(label, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
156                LinearLayout.LayoutParams.WRAP_CONTENT));
157    }
158
159    private void addChildToRoot(LinearLayout root, LinearLayout layout) {
160        root.addView(layout, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
161                LinearLayout.LayoutParams.WRAP_CONTENT));
162    }
163
164    private void addBitmapDrawable(LinearLayout layout, int resource, boolean scale) {
165        Bitmap bitmap;
166        bitmap = loadAndPrintDpi(resource, scale);
167
168        View view = new View(this);
169
170        final BitmapDrawable d = new BitmapDrawable(getResources(), bitmap);
171        if (!scale) d.setTargetDensity(getResources().getDisplayMetrics());
172        view.setBackgroundDrawable(d);
173
174        view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
175                d.getIntrinsicHeight()));
176        layout.addView(view);
177    }
178
179    private void addResourceDrawable(LinearLayout layout, int resource) {
180        View view = new View(this);
181
182        final Drawable d = getResources().getDrawable(resource);
183        view.setBackgroundDrawable(d);
184
185        view.setLayoutParams(new LinearLayout.LayoutParams(d.getIntrinsicWidth(),
186                d.getIntrinsicHeight()));
187        layout.addView(view);
188    }
189
190    private void addCanvasBitmap(LinearLayout layout, int resource, boolean scale) {
191        Bitmap bitmap;
192        bitmap = loadAndPrintDpi(resource, scale);
193
194        ScaledBitmapView view = new ScaledBitmapView(this, bitmap);
195
196        view.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
197                LinearLayout.LayoutParams.WRAP_CONTENT));
198        layout.addView(view);
199    }
200
201    private void addNinePatchResourceDrawable(LinearLayout layout, int resource) {
202        View view = new View(this);
203
204        final Drawable d = getResources().getDrawable(resource);
205        view.setBackgroundDrawable(d);
206
207        Log.i("foo", "9-patch #" + Integer.toHexString(resource)
208                + " w=" + d.getIntrinsicWidth() + " h=" + d.getIntrinsicHeight());
209        view.setLayoutParams(new LinearLayout.LayoutParams(
210                d.getIntrinsicWidth()*2, d.getIntrinsicHeight()*2));
211        layout.addView(view);
212    }
213
214    private Bitmap loadAndPrintDpi(int id, boolean scale) {
215        Bitmap bitmap;
216        if (scale) {
217            bitmap = BitmapFactory.decodeResource(getResources(), id);
218        } else {
219            BitmapFactory.Options opts = new BitmapFactory.Options();
220            opts.inScaled = false;
221            bitmap = BitmapFactory.decodeResource(getResources(), id, opts);
222        }
223        return bitmap;
224    }
225
226    private class ScaledBitmapView extends View {
227        private Bitmap mBitmap;
228
229        public ScaledBitmapView(Context context, Bitmap bitmap) {
230            super(context);
231            mBitmap = bitmap;
232        }
233
234        @Override
235        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
236            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
237            final DisplayMetrics metrics = getResources().getDisplayMetrics();
238            setMeasuredDimension(
239                    mBitmap.getScaledWidth(metrics),
240                    mBitmap.getScaledHeight(metrics));
241        }
242
243        @Override
244        protected void onDraw(Canvas canvas) {
245            super.onDraw(canvas);
246
247            canvas.drawBitmap(mBitmap, 0.0f, 0.0f, null);
248        }
249    }
250}
251