1 files changed, 192 insertions, 0 deletions
diff --git a/phone/com/android/internal/policy/impl/IconUtilities.java b/phone/com/android/internal/policy/impl/IconUtilities.java
new file mode 100644
index 0000000..99055cf
--- /dev/null
+++ b/phone/com/android/internal/policy/impl/IconUtilities.java
@@ -0,0 +1,192 @@
+/*
+ * 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.android.internal.policy.impl;
+
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.PaintDrawable;
+import android.graphics.drawable.StateListDrawable;
+import android.graphics.Bitmap;
+import android.graphics.BlurMaskFilter;
+import android.graphics.Canvas;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.Paint;
+import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.PixelFormat;
+import android.graphics.PorterDuff;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.TableMaskFilter;
+import android.graphics.Typeface;
+import android.text.Layout.Alignment;
+import android.text.StaticLayout;
+import android.text.TextPaint;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.content.res.Resources;
+import android.content.Context;
+
+/**
+ * Various utilities shared amongst the Launcher's classes.
+ */
+final class IconUtilities {
+    private static final String TAG = "IconUtilities";
+
+    private static final int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
+
+    private int mIconWidth = -1;
+    private int mIconHeight = -1;
+    private int mIconTextureWidth = -1;
+    private int mIconTextureHeight = -1;
+
+    private final Paint mPaint = new Paint();
+    private final Paint mBlurPaint = new Paint();
+    private final Paint mGlowColorPressedPaint = new Paint();
+    private final Paint mGlowColorFocusedPaint = new Paint();
+    private final Rect mOldBounds = new Rect();
+    private final Canvas mCanvas = new Canvas();
+    private final DisplayMetrics mDisplayMetrics;
+
+    private int mColorIndex = 0;
+
+    public IconUtilities(Context context) {
+        final Resources resources = context.getResources();
+        DisplayMetrics metrics = mDisplayMetrics = resources.getDisplayMetrics();
+        final float density = metrics.density;
+        final float blurPx = 5 * density;
+
+        mIconWidth = mIconHeight = (int) resources.getDimension(android.R.dimen.app_icon_size);
+        mIconTextureWidth = mIconTextureHeight = mIconWidth + (int)(blurPx*2);
+
+        mBlurPaint.setMaskFilter(new BlurMaskFilter(blurPx, BlurMaskFilter.Blur.NORMAL));
+        mGlowColorPressedPaint.setColor(0xffffc300);
+        mGlowColorPressedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));
+        mGlowColorFocusedPaint.setColor(0xffff8e00);
+        mGlowColorFocusedPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30));
+
+        ColorMatrix cm = new ColorMatrix();
+        cm.setSaturation(0.2f);
+
+        mCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
+                Paint.FILTER_BITMAP_FLAG));
+    }
+
+    public Drawable createIconDrawable(Drawable src) {
+        Bitmap scaled = createIconBitmap(src);
+
+        StateListDrawable result = new StateListDrawable();
+
+        result.addState(new int[] { android.R.attr.state_focused },
+                new BitmapDrawable(createSelectedBitmap(scaled, false)));
+        result.addState(new int[] { android.R.attr.state_pressed },
+                new BitmapDrawable(createSelectedBitmap(scaled, true)));
+        result.addState(new int[0], new BitmapDrawable(scaled));
+
+        result.setBounds(0, 0, mIconTextureWidth, mIconTextureHeight);
+        return result;
+    }
+
+    /**
+     * Returns a bitmap suitable for the all apps view.  The bitmap will be a power
+     * of two sized ARGB_8888 bitmap that can be used as a gl texture.
+     */
+    private Bitmap createIconBitmap(Drawable icon) {
+        int width = mIconWidth;
+        int height = mIconHeight;
+
+        if (icon instanceof PaintDrawable) {
+            PaintDrawable painter = (PaintDrawable) icon;
+            painter.setIntrinsicWidth(width);
+            painter.setIntrinsicHeight(height);
+        } else if (icon instanceof BitmapDrawable) {
+            // Ensure the bitmap has a density.
+            BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
+            Bitmap bitmap = bitmapDrawable.getBitmap();
+            if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
+                bitmapDrawable.setTargetDensity(mDisplayMetrics);
+            }
+        }
+        int sourceWidth = icon.getIntrinsicWidth();
+        int sourceHeight = icon.getIntrinsicHeight();
+
+        if (sourceWidth > 0 && sourceWidth > 0) {
+            // There are intrinsic sizes.
+            if (width < sourceWidth || height < sourceHeight) {
+                // It's too big, scale it down.
+                final float ratio = (float) sourceWidth / sourceHeight;
+                if (sourceWidth > sourceHeight) {
+                    height = (int) (width / ratio);
+                } else if (sourceHeight > sourceWidth) {
+                    width = (int) (height * ratio);
+                }
+            } else if (sourceWidth < width && sourceHeight < height) {
+                // It's small, use the size they gave us.
+                width = sourceWidth;
+                height = sourceHeight;
+            }
+        }
+
+        // no intrinsic size --> use default size
+        int textureWidth = mIconTextureWidth;
+        int textureHeight = mIconTextureHeight;
+
+        final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
+                Bitmap.Config.ARGB_8888);
+        final Canvas canvas = mCanvas;
+        canvas.setBitmap(bitmap);
+
+        final int left = (textureWidth-width) / 2;
+        final int top = (textureHeight-height) / 2;
+
+        if (false) {
+            // draw a big box for the icon for debugging
+            canvas.drawColor(sColors[mColorIndex]);
+            if (++mColorIndex >= sColors.length) mColorIndex = 0;
+            Paint debugPaint = new Paint();
+            debugPaint.setColor(0xffcccc00);
+            canvas.drawRect(left, top, left+width, top+height, debugPaint);
+        }
+
+        mOldBounds.set(icon.getBounds());
+        icon.setBounds(left, top, left+width, top+height);
+        icon.draw(canvas);
+        icon.setBounds(mOldBounds);
+
+        return bitmap;
+    }
+
+    private Bitmap createSelectedBitmap(Bitmap src, boolean pressed) {
+        final Bitmap result = Bitmap.createBitmap(mIconTextureWidth, mIconTextureHeight,
+                Bitmap.Config.ARGB_8888);
+        final Canvas dest = new Canvas(result);
+
+        dest.drawColor(0, PorterDuff.Mode.CLEAR);
+
+        int[] xy = new int[2];
+        Bitmap mask = src.extractAlpha(mBlurPaint, xy);
+
+        dest.drawBitmap(mask, xy[0], xy[1],
+                pressed ? mGlowColorPressedPaint : mGlowColorFocusedPaint);
+
+        mask.recycle();
+
+        dest.drawBitmap(src, 0, 0, mPaint);
+
+        return result;
+    }
+}