Launcher shortcuts animations update.

> The shortcut container closes with an animation
> When opening/closing the animation only the icon scales
and not the title and drag handle
> When dragging the icon, it starts from the original icon position and
moves under the user finger. The container grows to follow the drag view.

Bug: 28980830
Change-Id: Ic0353c30b682d1f018cbf4d62e8a6e8e7d7d4664

1 files changed, 103 insertions, 0 deletions

diff --git a/src/com/android/launcher3/shortcuts/ShortcutDragPreviewProvider.java b/src/com/android/launcher3/shortcuts/ShortcutDragPreviewProvider.java
new file mode 100644
index 000000000..a25e475d4
--- /dev/null
+++ b/src/com/android/launcher3/shortcuts/ShortcutDragPreviewProvider.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2016 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.shortcuts;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.view.View;
+import android.widget.ImageView;
+
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.HolographicOutlineHelper;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.graphics.DragPreviewProvider;
+
+/**
+ * Extension of {@link DragPreviewProvider} which generates bitmaps scaled to the default icon size.
+ */
+public class ShortcutDragPreviewProvider extends DragPreviewProvider {
+
+    private final Point mPositionShift;
+
+    public ShortcutDragPreviewProvider(View icon, Point shift) {
+        super(icon);
+        mPositionShift = shift;
+    }
+
+    @Override
+    public Bitmap createDragOutline(Canvas canvas) {
+        Bitmap b = drawScaledPreview(canvas);
+
+        final int outlineColor = mView.getResources().getColor(R.color.outline_color);
+        HolographicOutlineHelper.obtain(mView.getContext())
+                .applyExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
+        canvas.setBitmap(null);
+        return b;
+    }
+
+    @Override
+    public Bitmap createDragBitmap(Canvas canvas) {
+        Bitmap b = drawScaledPreview(canvas);
+        canvas.setBitmap(null);
+        return b;
+    }
+
+    private Bitmap drawScaledPreview(Canvas canvas) {
+        Drawable d = mView.getBackground();
+        Rect bounds = getDrawableBounds(d);
+
+        int size = Launcher.getLauncher(mView.getContext()).getDeviceProfile().iconSizePx;
+
+        final Bitmap b = Bitmap.createBitmap(
+                size + DRAG_BITMAP_PADDING,
+                size + DRAG_BITMAP_PADDING,
+                Bitmap.Config.ARGB_8888);
+
+        canvas.setBitmap(b);
+        canvas.save(Canvas.MATRIX_SAVE_FLAG);
+        canvas.translate(DRAG_BITMAP_PADDING / 2, DRAG_BITMAP_PADDING / 2);
+        canvas.scale(((float) size) / bounds.width(), ((float) size) / bounds.height(), 0, 0);
+        canvas.translate(bounds.left, bounds.top);
+        d.draw(canvas);
+        canvas.restore();
+        return b;
+    }
+
+    @Override
+    public float getScaleAndPosition(Bitmap preview, int[] outPos) {
+        Launcher launcher = Launcher.getLauncher(mView.getContext());
+        int iconSize = getDrawableBounds(mView.getBackground()).width();
+        float scale = launcher.getDragLayer().getLocationInDragLayer(mView, outPos);
+
+        int iconLeft = mView.getPaddingStart();
+        if (Utilities.isRtl(mView.getResources())) {
+            iconLeft = mView.getWidth() - iconSize - iconLeft;
+        }
+
+        outPos[0] += Math.round(scale * iconLeft + (scale * iconSize - preview.getWidth()) / 2 +
+                mPositionShift.x);
+        outPos[1] += Math.round((scale * mView.getHeight() - preview.getHeight()) / 2
+                + mPositionShift.y);
+        float size = launcher.getDeviceProfile().iconSizePx;
+        return scale * iconSize / size;
+    }
+}