Stop using a separate ImageView for default wallpaper

Fixes janky transition when going from default wallpaper to another wallpaper Bug: 11278179 Change-Id: I738d1ae7bbc5e2d139a084e721b53fed9008367f
2013-10-23 20:59:51 +02:00
parent 3d7f086f6a
commit 83699e56be
4 changed files with 116 additions and 26 deletions
@@ -0,0 +1,102 @@
+/*
+ * 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.launcher3;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+
+import com.android.gallery3d.glrenderer.BasicTexture;
+import com.android.gallery3d.glrenderer.BitmapTexture;
+import com.android.photos.views.TiledImageRenderer;
+
+public class DrawableTileSource implements TiledImageRenderer.TileSource {
+    private static final int GL_SIZE_LIMIT = 2048;
+    // This must be no larger than half the size of the GL_SIZE_LIMIT
+    // due to decodePreview being allowed to be up to 2x the size of the target
+    public static final int MAX_PREVIEW_SIZE = GL_SIZE_LIMIT / 2;
+
+    private int mTileSize;
+    private int mPreviewSize;
+    private Drawable mDrawable;
+    private BitmapTexture mPreview;
+
+    public DrawableTileSource(Context context, Drawable d, int previewSize) {
+        mTileSize = TiledImageRenderer.suggestedTileSize(context);
+        mDrawable = d;
+        mPreviewSize = Math.min(previewSize, MAX_PREVIEW_SIZE);
+    }
+
+    @Override
+    public int getTileSize() {
+        return mTileSize;
+    }
+
+    @Override
+    public int getImageWidth() {
+        return mDrawable.getIntrinsicWidth();
+    }
+
+    @Override
+    public int getImageHeight() {
+        return mDrawable.getIntrinsicHeight();
+    }
+
+    @Override
+    public int getRotation() {
+        return 0;
+    }
+
+    @Override
+    public BasicTexture getPreview() {
+        if (mPreviewSize == 0) {
+            return null;
+        }
+        if (mPreview == null){
+            float width = getImageWidth();
+            float height = getImageHeight();
+            while (width > MAX_PREVIEW_SIZE || height > MAX_PREVIEW_SIZE) {
+                width /= 2;
+                height /= 2;
+            }
+            Bitmap b = Bitmap.createBitmap((int) width, (int) height, Bitmap.Config.ARGB_8888);
+            Canvas c = new Canvas(b);
+            mDrawable.setBounds(new Rect(0, 0, (int) width, (int) height));
+            mDrawable.draw(c);
+            c.setBitmap(null);
+            mPreview = new BitmapTexture(b);
+        }
+        return mPreview;
+    }
+
+    @Override
+    public Bitmap getTile(int level, int x, int y, Bitmap bitmap) {
+        int tileSize = getTileSize();
+        if (bitmap == null) {
+            bitmap = Bitmap.createBitmap(tileSize, tileSize, Bitmap.Config.ARGB_8888);
+        }
+        Canvas c = new Canvas(bitmap);
+        Rect bounds = new Rect(0, 0, getImageWidth(), getImageHeight());
+        bounds.offset(-x, -y);
+        mDrawable.setBounds(bounds);
+        mDrawable.draw(c);
+        c.setBitmap(null);
+        return bitmap;
+    }
+}