1 files changed, 156 insertions, 0 deletions
diff --git a/src/com/android/launcher2/PagedViewWidgetIcon.java b/src/com/android/launcher2/PagedViewWidgetIcon.java
new file mode 100644
index 000000000..f285dab7f
--- /dev/null
+++ b/src/com/android/launcher2/PagedViewWidgetIcon.java
@@ -0,0 +1,156 @@
+/*
+ * 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 android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Checkable;
+import android.widget.LinearLayout;
+
+import com.android.launcher.R;
+
+/**
+ * An widget icon for use specifically in the CustomizePagedView.  In class form so that
+ * we can add logic for how it will look when checked/unchecked.
+ */
+public class PagedViewWidgetIcon extends LinearLayout implements Checkable {
+    private static final String TAG = "PagedViewIcon";
+
+    // Holographic outline
+    private final Paint mPaint = new Paint();
+    private static HolographicOutlineHelper sHolographicOutlineHelper;
+    private final Paint mErasePaint = new Paint();
+    private Bitmap mCheckedOutline;
+    private Canvas mHolographicOutlineCanvas;
+    private boolean mIsHolographicUpdatePass;
+
+    private int mAlpha;
+
+    private boolean mIsChecked;
+
+    // Highlight colours
+    private int mCheckedBlurColor;
+    private int mCheckedOutlineColor;
+
+
+    public PagedViewWidgetIcon(Context context) {
+        this(context, null);
+    }
+
+    public PagedViewWidgetIcon(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public PagedViewWidgetIcon(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PagedViewWidgetIcon,
+                defStyle, 0);
+        mCheckedBlurColor = a.getColor(R.styleable.PagedViewWidgetIcon_checkedBlurColor, 0);
+        mCheckedOutlineColor = a.getColor(R.styleable.PagedViewWidgetIcon_checkedOutlineColor, 0);
+        mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
+        mErasePaint.setFilterBitmap(true);
+        a.recycle();
+
+        if (sHolographicOutlineHelper == null) {
+            sHolographicOutlineHelper = new HolographicOutlineHelper();
+        }
+
+        setWillNotDraw(false);
+    }
+
+    public void invalidateCheckedImage() {
+        if (mCheckedOutline != null) {
+            mCheckedOutline.recycle();
+            mCheckedOutline = null;
+        }
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        // Draw the view itself
+        if (mIsHolographicUpdatePass) {
+            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);
+            }
+        }
+
+        // Draw the holographic checked overlay if necessary
+        if (!mIsHolographicUpdatePass) {
+            if (mCheckedOutline != null) {
+                mPaint.setAlpha(255);
+                canvas.drawBitmap(mCheckedOutline, 0, 0, mPaint);
+            }
+        }
+    }
+
+    @Override
+    public boolean isChecked() {
+        return mIsChecked;
+    }
+
+    @Override
+    public void setChecked(boolean checked) {
+        if (mIsChecked != checked) {
+            mIsChecked = checked;
+
+            if (mIsChecked) {
+                // set a flag to indicate that we are going to draw the view at full alpha
+                mIsHolographicUpdatePass = true;
+                final int width = getMeasuredWidth();
+                final int height = getMeasuredHeight();
+                mCheckedOutline = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+                mHolographicOutlineCanvas = new Canvas(mCheckedOutline);
+                mHolographicOutlineCanvas.concat(getMatrix());
+                draw(mHolographicOutlineCanvas);
+                sHolographicOutlineHelper.applyExpensiveOutlineWithBlur(mCheckedOutline,
+                        mHolographicOutlineCanvas, mCheckedBlurColor, mCheckedOutlineColor);
+
+                // Unlike PagedViewIcon, we can't seem to properly set the clip rect for all the
+                // children to respect when drawing... so for now, we erase over those parts in the
+                // checked highlight image
+                mHolographicOutlineCanvas.drawRect(0, findViewById(R.id.divider).getTop(),
+                        width, height, mErasePaint);
+
+                mIsHolographicUpdatePass = false;
+                mHolographicOutlineCanvas = null;
+            } else {
+                invalidateCheckedImage();
+            }
+
+            invalidate();
+        }
+    }
+
+    @Override
+    public void toggle() {
+        setChecked(!mIsChecked);
+    }
+}