supporting swipable home screens on xlarge devices
- icons and widgets on home screens can be "dimmed"
- celllayout no longer renders a dimmed version of itself, but instead its children make dimmed versions of themselves
- celllayout no longer always takes up full size of workspace, in landscape mode
neighboring screens (celllayouts) are visible
- on xlarge devices, in landscape mode side screens are "dimmed"
- moved holographic outline helper to its own file
- fixed bug where mini-screens were still able to scroll left/right
Change-Id: I9e85ab4147edfae1e7525c3d11d42be3fabf4f6d
diff --git a/src/com/android/launcher2/DimmableBubbleTextView.java b/src/com/android/launcher2/DimmableBubbleTextView.java
new file mode 100644
index 0000000..66cc97a
--- /dev/null
+++ b/src/com/android/launcher2/DimmableBubbleTextView.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2010 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.launcher2;
+
+import com.android.launcher.R;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.util.AttributeSet;
+
+public class DimmableBubbleTextView extends BubbleTextView {
+ private Paint mDimmedPaint = new Paint();
+ private int mAlpha;
+ private int mDimmedAlpha;
+ private Bitmap mDimmedView;
+ private Canvas mDimmedViewCanvas;
+ private boolean isDimmedViewUpdatePass;
+
+ public DimmableBubbleTextView(Context context) {
+ super(context);
+ mDimmedPaint.setFilterBitmap(true);
+ }
+
+ public DimmableBubbleTextView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ mDimmedPaint.setFilterBitmap(true);
+ }
+
+ public DimmableBubbleTextView(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ mDimmedPaint.setFilterBitmap(true);
+ }
+
+ private static float cubic(float r) {
+ return (float) (Math.pow(r-1, 3) + 1);
+ }
+
+ /**
+ * Returns the interpolated holographic highlight alpha for the effect we want when scrolling
+ * pages.
+ */
+ public static float highlightAlphaInterpolator(float r) {
+ final float pivot = 0.3f;
+ if (r < pivot) {
+ return Math.max(0.5f, 0.65f*cubic(r/pivot));
+ } else {
+ return Math.min(1.0f, 0.65f*cubic(1 - (r-pivot)/(1-pivot)));
+ }
+ }
+
+ /**
+ * Returns the interpolated view alpha for the effect we want when scrolling pages.
+ */
+ public static float viewAlphaInterpolator(float r) {
+ final float pivot = 0.6f;
+ if (r < pivot) {
+ return r/pivot;
+ } else {
+ return 1.0f;
+ }
+ }
+
+ @Override
+ public boolean onSetAlpha(int alpha) {
+ super.onSetAlpha(alpha);
+ return true;
+ }
+
+ @Override
+ public void setAlpha(float alpha) {
+ final float viewAlpha = viewAlphaInterpolator(alpha);
+ final float dimmedAlpha = highlightAlphaInterpolator(alpha);
+ mAlpha = (int) (viewAlpha * 255);
+ mDimmedAlpha = (int) (dimmedAlpha * 255);
+ super.setAlpha(viewAlpha);
+ }
+
+ @Override
+ protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+ super.onLayout(changed, left, top, right, bottom);
+
+ if (mDimmedView == null) {
+ isDimmedViewUpdatePass = true;
+ mDimmedView = Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(),
+ Bitmap.Config.ARGB_8888);
+ mDimmedViewCanvas = new Canvas(mDimmedView);
+ mDimmedViewCanvas.concat(getMatrix());
+
+ draw(mDimmedViewCanvas);
+
+ // MAKE THE DIMMED VERSION
+ int dimmedColor = getContext().getResources().getColor(R.color.dimmed_view_color);
+ mDimmedViewCanvas.drawColor(dimmedColor, PorterDuff.Mode.SRC_IN);
+
+ isDimmedViewUpdatePass = false;
+ }
+ }
+
+ @Override
+ protected void onDraw(Canvas canvas) {
+ if (isDimmedViewUpdatePass) {
+ canvas.save();
+ final float alpha = getAlpha();
+ super.setAlpha(1.0f);
+ super.onDraw(canvas);
+ super.setAlpha(alpha);
+ canvas.restore();
+ } else {
+ if (mAlpha > 0) {
+ super.onDraw(canvas);
+ }
+ }
+
+ if (mDimmedView != null && mDimmedAlpha > 0) {
+ mDimmedPaint.setAlpha(mDimmedAlpha);
+ canvas.drawBitmap(mDimmedView, mScrollX, mScrollY, mDimmedPaint);
+ }
+ }
+}
\ No newline at end of file