commit 665971c007777f2e740945e35df745b9a360331f
author Mario Bertschler <bmario@google.com> Wed Jul 19 11:44:00 2017 -0700
committer Mario Bertschler <bmario@google.com> Thu Jul 20 15:45:55 2017 -0700
tree 43b5838183018b66e33628f674f0fa405b47056b
parent 60326ece2027793181dfda5c43a028dc0e15b1da

Adding ability to set a custom blur mask filter and alphas in shadow
generator.

Bug: 63151770
Change-Id: I7d79b700b64ccb949816b7bf31d98cc76fa443ba

src/com/android/launcher3/graphics/ShadowGenerator.java

diff --git a/src/com/android/launcher3/graphics/ShadowGenerator.java b/src/com/android/launcher3/graphics/ShadowGenerator.java
index 3c71c3a..60eeef5 100644
--- a/src/com/android/launcher3/graphics/ShadowGenerator.java
+++ b/src/com/android/launcher3/graphics/ShadowGenerator.java
@@ -53,33 +53,38 @@
     private final Canvas mCanvas;
     private final Paint mBlurPaint;
     private final Paint mDrawPaint;
+    private final BlurMaskFilter mDefaultBlurMaskFilter;
 
     private ShadowGenerator(Context context) {
         mIconSize = LauncherAppState.getIDP(context).iconBitmapSize;
         mCanvas = new Canvas();
         mBlurPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
-        mBlurPaint.setMaskFilter(new BlurMaskFilter(mIconSize * BLUR_FACTOR, Blur.NORMAL));
         mDrawPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+        mDefaultBlurMaskFilter = new BlurMaskFilter(mIconSize * BLUR_FACTOR, Blur.NORMAL);
     }
 
     public synchronized Bitmap recreateIcon(Bitmap icon) {
-        return recreateIcon(icon, true);
+        return recreateIcon(icon, true, mDefaultBlurMaskFilter, AMBIENT_SHADOW_ALPHA,
+                KEY_SHADOW_ALPHA);
     }
 
-    public synchronized Bitmap recreateIcon(Bitmap icon, boolean resize) {
+    public synchronized Bitmap recreateIcon(Bitmap icon, boolean resize,
+            BlurMaskFilter blurMaskFilter, int ambientAlpha, int keyAlpha) {
         int width = resize ? mIconSize : icon.getWidth();
         int height = resize ? mIconSize : icon.getHeight();
         int[] offset = new int[2];
+
+        mBlurPaint.setMaskFilter(blurMaskFilter);
         Bitmap shadow = icon.extractAlpha(mBlurPaint, offset);
         Bitmap result = Bitmap.createBitmap(width, height, Config.ARGB_8888);
         mCanvas.setBitmap(result);
 
         // Draw ambient shadow
-        mDrawPaint.setAlpha(AMBIENT_SHADOW_ALPHA);
+        mDrawPaint.setAlpha(ambientAlpha);
         mCanvas.drawBitmap(shadow, offset[0], offset[1], mDrawPaint);
 
         // Draw key shadow
-        mDrawPaint.setAlpha(KEY_SHADOW_ALPHA);
+        mDrawPaint.setAlpha(keyAlpha);
         mCanvas.drawBitmap(shadow, offset[0], offset[1] + KEY_SHADOW_DISTANCE * mIconSize, mDrawPaint);
 
         // Draw the icon