holo look for pressed/focused workspace icons

Change-Id: Ia964c868afd200be3828e4397659391f857599e6

6 files changed, 189 insertions, 58 deletions

diff --git a/res/drawable/shortcut_selector.xml b/res/drawable/shortcut_selector.xml
deleted file mode 100644
index 8059f00..0000000
--- a/res/drawable/shortcut_selector.xml
+++ /dev/null
@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-**
-** Copyright 2007, 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.
-*/
--->
-
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_window_focused="true" android:state_focused="true" android:drawable="@drawable/focused_application_background" />
-    <item android:state_pressed="true" android:drawable="@drawable/pressed_application_background" />
-    <item android:drawable="@android:color/transparent" />
-</selector>
diff --git a/res/values/colors.xml b/res/values/colors.xml
index 57f8bfc..4abbd50 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -33,4 +33,9 @@
     <color name="dimmed_view_color">#FF7F7F7F</color>
 
     <color name="drag_outline_color">#9DBE12</color>
+
+    <color name="workspace_item_pressed_outline_color">#6595f9</color>
+    <color name="workspace_item_pressed_glow_color">#0997ff</color>
+    <color name="workspace_item_focused_outline_color">#6595f9</color>
+    <color name="workspace_item_focused_glow_color">#0997ff</color>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 1e2dba2..7592a15 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -44,7 +44,6 @@
         <item name="android:gravity">center_horizontal</item>
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">match_parent</item>
-        <item name="android:background">@drawable/shortcut_selector</item>
         <item name="android:paddingLeft">5dip</item>
         <item name="android:paddingRight">5dip</item>
     </style>
diff --git a/src/com/android/launcher2/BubbleTextView.java b/src/com/android/launcher2/BubbleTextView.java
index 995877b..6e2a58b 100644
--- a/src/com/android/launcher2/BubbleTextView.java
+++ b/src/com/android/launcher2/BubbleTextView.java
@@ -16,18 +16,19 @@
 
 package com.android.launcher2;
 
+import com.android.launcher.R;
+
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
-import android.graphics.RectF;
+import android.graphics.Rect;
+import android.graphics.Region.Op;
 import android.graphics.drawable.Drawable;
-import android.text.Layout;
 import android.util.AttributeSet;
-
-import com.android.launcher.R;
+import android.view.MotionEvent;
 
 /**
  * TextView that draws a bubble behind the text. We cannot use a LineBackgroundSpan
@@ -44,16 +45,23 @@ public class BubbleTextView extends CacheableTextView {
     static final float PADDING_H = 8.0f;
     static final float PADDING_V = 3.0f;
 
-    private final RectF mRect = new RectF();
     private Paint mPaint;
     private float mBubbleColorAlpha;
     private int mPrevAlpha = -1;
 
+    private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper();
+    private final Canvas mTempCanvas = new Canvas();
+    private final Rect mTempRect = new Rect();
+    private final Paint mTempPaint = new Paint();
+    private boolean mDidInvalidateForPressedState;
+    private Bitmap mPressedOrFocusedBackground;
+    private int mFocusedOutlineColor;
+    private int mFocusedGlowColor;
+    private int mPressedOutlineColor;
+    private int mPressedGlowColor;
+
     private boolean mBackgroundSizeChanged;
     private Drawable mBackground;
-    private float mCornerRadius;
-    private float mPaddingH;
-    private float mPaddingV;
 
     public BubbleTextView(Context context) {
         super(context);
@@ -80,12 +88,13 @@ public class BubbleTextView extends CacheableTextView {
         mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
         mPaint.setColor(bubbleColor);
         mBubbleColorAlpha = Color.alpha(bubbleColor) / 255.0f;
-
-        final float scale = res.getDisplayMetrics().density;
-        mCornerRadius = CORNER_RADIUS * scale;
-        mPaddingH = PADDING_H * scale;
-        //noinspection PointlessArithmeticExpression
-        mPaddingV = PADDING_V * scale;
+        mFocusedOutlineColor =
+            getResources().getColor(R.color.workspace_item_focused_outline_color);
+        mFocusedGlowColor = getResources().getColor(R.color.workspace_item_focused_glow_color);
+        mPressedOutlineColor =
+            getResources().getColor(R.color.workspace_item_pressed_outline_color);
+        mPressedGlowColor =
+            getResources().getColor(R.color.workspace_item_pressed_glow_color);
     }
 
     protected int getCacheTopPadding() {
@@ -110,7 +119,6 @@ public class BubbleTextView extends CacheableTextView {
         setText(info.title);
         buildAndEnableCache();
         setTag(info);
-
     }
 
     @Override
@@ -128,6 +136,28 @@ public class BubbleTextView extends CacheableTextView {
 
     @Override
     protected void drawableStateChanged() {
+        if (isPressed()) {
+            // In this case, we have already created the pressed outline on ACTION_DOWN,
+            // so we just need to do an invalidate to trigger draw
+            if (!mDidInvalidateForPressedState) {
+                invalidate();
+            }
+        } else {
+            // Otherwise, either clear the pressed/focused background, or create a background
+            // for the focused state
+            final boolean backgroundEmptyBefore = mPressedOrFocusedBackground == null;
+            mPressedOrFocusedBackground = null;
+            if (isFocused()) {
+                mPressedOrFocusedBackground = createGlowingOutline(
+                        mTempCanvas, mFocusedGlowColor, mFocusedOutlineColor);
+                invalidate();
+            }
+            final boolean backgroundEmptyNow = mPressedOrFocusedBackground == null;
+            if (!backgroundEmptyBefore && backgroundEmptyNow) {
+                invalidate();
+            }
+        }
+
         Drawable d = mBackground;
         if (d != null && d.isStateful()) {
             d.setState(getDrawableState());
@@ -135,8 +165,91 @@ public class BubbleTextView extends CacheableTextView {
         super.drawableStateChanged();
     }
 
+    /**
+     * Draw the View v into the given Canvas.
+     *
+     * @param v the view to draw
+     * @param destCanvas the canvas to draw on
+     * @param padding the horizontal and vertical padding to use when drawing
+     */
+    private void drawWithPadding(Canvas destCanvas, int padding) {
+        final Rect clipRect = mTempRect;
+        getDrawingRect(clipRect);
+
+        // adjust the clip rect so that we don't include the text label
+        clipRect.bottom =
+            getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + getLayout().getLineTop(0);
+
+        // Draw the View into the bitmap.
+        // The translate of scrollX and scrollY is necessary when drawing TextViews, because
+        // they set scrollX and scrollY to large values to achieve centered text
+        destCanvas.save();
+        destCanvas.translate(-getScrollX() + padding / 2, -getScrollY() + padding / 2);
+        destCanvas.clipRect(clipRect, Op.REPLACE);
+        draw(destCanvas);
+        destCanvas.restore();
+    }
+
+    /**
+     * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
+     * Responsibility for the bitmap is transferred to the caller.
+     */
+    private Bitmap createGlowingOutline(Canvas canvas, int outlineColor, int glowColor) {
+        final int padding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
+        final Bitmap b = Bitmap.createBitmap(
+                getWidth() + padding, getHeight() + padding, Bitmap.Config.ARGB_8888);
+
+        canvas.setBitmap(b);
+        drawWithPadding(canvas, padding);
+        mOutlineHelper.applyExtraThickExpensiveOutlineWithBlur(b, canvas, glowColor, outlineColor);
+
+        return b;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        // Call the superclass onTouchEvent first, because sometimes it changes the state to
+        // isPressed() on an ACTION_UP
+        boolean result = super.onTouchEvent(event);
+
+        switch (event.getAction()) {
+            case MotionEvent.ACTION_DOWN:
+                // So that the pressed outline is visible immediately when isPressed() is true,
+                // we pre-create it on ACTION_DOWN (it takes a small but perceptible amount of time
+                // to create it)
+                if (mPressedOrFocusedBackground == null) {
+                    mPressedOrFocusedBackground = createGlowingOutline(
+                            mTempCanvas, mPressedGlowColor, mPressedOutlineColor);
+                }
+                // Invalidate so the pressed state is visible, or set a flag so we know that we
+                // have to call invalidate as soon as the state is "pressed"
+                if (isPressed()) {
+                    mDidInvalidateForPressedState = true;
+                    invalidate();
+                } else {
+                    mDidInvalidateForPressedState = false;
+                }
+                break;
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                // If we've touched down and up on an item, and it's still not "pressed", then
+                // destroy the pressed outline
+                if (!isPressed()) {
+                    mPressedOrFocusedBackground = null;
+                }
+                break;
+        }
+        return result;
+    }
+
     @Override
     public void draw(Canvas canvas) {
+        if (mPressedOrFocusedBackground != null && (isPressed() || isFocused())) {
+            canvas.drawBitmap(mPressedOrFocusedBackground,
+                    mScrollX - HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS / 2,
+                    mScrollY - HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS / 2,
+                    mTempPaint);
+        }
         if (isBuildingCache()) {
             // We enhance the shadow by drawing the shadow twice
             this.setShadowLayer(SHADOW_LARGE_RADIUS, 0.0f, SHADOW_Y_OFFSET, SHADOW_LARGE_COLOUR);
@@ -162,7 +275,6 @@ public class BubbleTextView extends CacheableTextView {
                     canvas.translate(-scrollX, -scrollY);
                 }
             }
-
             super.draw(canvas);
         }
     }
diff --git a/src/com/android/launcher2/HolographicOutlineHelper.java b/src/com/android/launcher2/HolographicOutlineHelper.java
index 0311afa..6d0899d 100644
--- a/src/com/android/launcher2/HolographicOutlineHelper.java
+++ b/src/com/android/launcher2/HolographicOutlineHelper.java
@@ -31,26 +31,30 @@ public class HolographicOutlineHelper {
     private final Paint mErasePaint = new Paint();
     private final Paint mAlphaClipPaint = new Paint();
 
-    public static final int OUTER_BLUR_RADIUS;
+    public static final int MAX_OUTER_BLUR_RADIUS;
 
+    private static final BlurMaskFilter sExtraThickOuterBlurMaskFilter;
     private static final BlurMaskFilter sThickOuterBlurMaskFilter;
     private static final BlurMaskFilter sMediumOuterBlurMaskFilter;
     private static final BlurMaskFilter sThinOuterBlurMaskFilter;
     private static final BlurMaskFilter sThickInnerBlurMaskFilter;
+    private static final BlurMaskFilter sExtraThickInnerBlurMaskFilter;
     private static final BlurMaskFilter sMediumInnerBlurMaskFilter;
 
     private static final int THICK = 0;
     private static final int MEDIUM = 1;
+    private static final int EXTRA_THICK = 2;
 
     static {
         final float scale = LauncherApplication.getScreenDensity();
 
-        OUTER_BLUR_RADIUS = (int) (scale * 6.0f);
+        MAX_OUTER_BLUR_RADIUS = (int) (scale * 12.0f);
 
-        sThickOuterBlurMaskFilter = new BlurMaskFilter(OUTER_BLUR_RADIUS,
-                BlurMaskFilter.Blur.OUTER);
+        sExtraThickOuterBlurMaskFilter = new BlurMaskFilter(scale * 12.0f, BlurMaskFilter.Blur.OUTER);
+        sThickOuterBlurMaskFilter = new BlurMaskFilter(scale * 6.0f, BlurMaskFilter.Blur.OUTER);
         sMediumOuterBlurMaskFilter = new BlurMaskFilter(scale * 2.0f, BlurMaskFilter.Blur.OUTER);
         sThinOuterBlurMaskFilter = new BlurMaskFilter(scale * 1.0f, BlurMaskFilter.Blur.OUTER);
+        sExtraThickInnerBlurMaskFilter = new BlurMaskFilter(scale * 6.0f, BlurMaskFilter.Blur.NORMAL);
         sThickInnerBlurMaskFilter = new BlurMaskFilter(scale * 4.0f, BlurMaskFilter.Blur.NORMAL);
         sMediumInnerBlurMaskFilter = new BlurMaskFilter(scale * 2.0f, BlurMaskFilter.Blur.NORMAL);
     }
@@ -122,19 +126,50 @@ public class HolographicOutlineHelper {
         Bitmap glowShape = srcDst.extractAlpha(mAlphaClipPaint, mTempOffset);
 
         // calculate the outer blur first
-        mBlurPaint.setMaskFilter(thickness == THICK ? sThickOuterBlurMaskFilter :
-                                                      sMediumOuterBlurMaskFilter);
+        BlurMaskFilter outerBlurMaskFilter;
+        switch (thickness) {
+            case EXTRA_THICK:
+                outerBlurMaskFilter = sExtraThickOuterBlurMaskFilter;
+                break;
+            case THICK:
+                outerBlurMaskFilter = sThickOuterBlurMaskFilter;
+                break;
+            case MEDIUM:
+                outerBlurMaskFilter = sMediumOuterBlurMaskFilter;
+                break;
+            default:
+                throw new RuntimeException("Invalid blur thickness");
+        }
+        mBlurPaint.setMaskFilter(outerBlurMaskFilter);
         int[] outerBlurOffset = new int[2];
         Bitmap thickOuterBlur = glowShape.extractAlpha(mBlurPaint, outerBlurOffset);
-        mBlurPaint.setMaskFilter(sThinOuterBlurMaskFilter);
-        int[] thinOuterBlurOffset = new int[2];
-        Bitmap thinOuterBlur = glowShape.extractAlpha(mBlurPaint, thinOuterBlurOffset);
+        if (thickness == EXTRA_THICK) {
+            mBlurPaint.setMaskFilter(sMediumOuterBlurMaskFilter);
+        } else {
+            mBlurPaint.setMaskFilter(sThinOuterBlurMaskFilter);
+        }
+
+        int[] brightOutlineOffset = new int[2];
+        Bitmap brightOutline = glowShape.extractAlpha(mBlurPaint, brightOutlineOffset);
 
         // calculate the inner blur
         srcDstCanvas.setBitmap(glowShape);
         srcDstCanvas.drawColor(0xFF000000, PorterDuff.Mode.SRC_OUT);
-        mBlurPaint.setMaskFilter(thickness == THICK ? sThickInnerBlurMaskFilter :
-                                                      sMediumInnerBlurMaskFilter);
+        BlurMaskFilter innerBlurMaskFilter;
+        switch (thickness) {
+            case EXTRA_THICK:
+                innerBlurMaskFilter = sExtraThickInnerBlurMaskFilter;
+                break;
+            case THICK:
+                innerBlurMaskFilter = sThickInnerBlurMaskFilter;
+                break;
+            case MEDIUM:
+                innerBlurMaskFilter = sMediumInnerBlurMaskFilter;
+                break;
+            default:
+                throw new RuntimeException("Invalid blur thickness");
+        }
+        mBlurPaint.setMaskFilter(innerBlurMaskFilter);
         int[] thickInnerBlurOffset = new int[2];
         Bitmap thickInnerBlur = glowShape.extractAlpha(mBlurPaint, thickInnerBlurOffset);
 
@@ -158,16 +193,21 @@ public class HolographicOutlineHelper {
 
         // draw the bright outline
         mHolographicPaint.setColor(outlineColor);
-        srcDstCanvas.drawBitmap(thinOuterBlur, thinOuterBlurOffset[0], thinOuterBlurOffset[1],
+        srcDstCanvas.drawBitmap(brightOutline, brightOutlineOffset[0], brightOutlineOffset[1],
                 mHolographicPaint);
 
         // cleanup
-        thinOuterBlur.recycle();
+        brightOutline.recycle();
         thickOuterBlur.recycle();
         thickInnerBlur.recycle();
         glowShape.recycle();
     }
 
+    void applyExtraThickExpensiveOutlineWithBlur(Bitmap srcDst, Canvas srcDstCanvas, int color,
+            int outlineColor) {
+        applyExpensiveOutlineWithBlur(srcDst, srcDstCanvas, color, outlineColor, EXTRA_THICK);
+    }
+
     void applyThickExpensiveOutlineWithBlur(Bitmap srcDst, Canvas srcDstCanvas, int color,
             int outlineColor) {
         applyExpensiveOutlineWithBlur(srcDst, srcDstCanvas, color, outlineColor, THICK);
diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java
index 4b96543..f70480d 100644
--- a/src/com/android/launcher2/Workspace.java
+++ b/src/com/android/launcher2/Workspace.java
@@ -1207,7 +1207,7 @@ public class Workspace extends SmoothPagedView
         final Canvas canvas = new Canvas();
 
         // We need to add extra padding to the bitmap to make room for the glow effect
-        final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS;
+        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
 
         // The outline is used to visualize where the item will land if dropped
         mDragOutline = createDragOutline(b, canvas, bitmapPadding);
@@ -1452,7 +1452,7 @@ public class Workspace extends SmoothPagedView
         final Canvas canvas = new Canvas();
 
         // We need to add extra padding to the bitmap to make room for the glow effect
-        final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS;
+        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
 
         // The outline is used to visualize where the item will land if dropped
         mDragOutline = createDragOutline(child, canvas, bitmapPadding);
@@ -1793,7 +1793,7 @@ public class Workspace extends SmoothPagedView
             // Create the drag outline
             // We need to add extra padding to the bitmap to make room for the glow effect
             final Canvas canvas = new Canvas();
-            final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS;
+            final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
             mDragOutline = createExternalDragOutline(canvas, bitmapPadding);
 
             // Show the current page outlines to indicate that we can accept this drop