Merge "Adding background protection for AllApps." into honeycomb-mr1

res/layout-xlarge/button_bar.xml

@@ -89,7 +89,7 @@
 
         android:focusable="false"
         android:clickable="true" />
-    <TextView
+    <com.android.launcher2.StrokedTextView
         android:id="@+id/all_apps_button"
         android:text="@string/all_apps_button_label"
         android:drawablePadding="@dimen/all_apps_button_drawable_padding"
@@ -107,6 +107,10 @@
         android:textColor="#CCFFFFFF"
         android:textSize="18sp"
 
+        launcher:strokeColor="#991e3157"
+        launcher:strokeTextColor="#DDFFFFFF"
+        launcher:strokeWidth="2.5"
+
         android:shadowColor="#DA000000"
         android:shadowDx="0.0"
         android:shadowDy="0.0"

res/values/attrs.xml

@@ -61,6 +61,16 @@
 
     </declare-styleable>
 
+    <!-- StrokedTextView specific attributes. -->
+    <declare-styleable name="StrokedTextView">
+        <!-- The color of the stroke outline -->
+        <attr name="strokeColor" format="color" />
+        <!-- The color of the text -->
+        <attr name="strokeTextColor" format="color" />
+        <!-- The width of the stroke -->
+        <attr name="strokeWidth" format="float" />
+    </declare-styleable>
+
     <!-- PagedViewIcon specific attributes. These attributes are used to customize
          a PagedViewIcon view in XML files. -->
     <declare-styleable name="PagedViewIcon">

src/com/android/launcher2/StrokedTextView.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2011 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.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+import com.android.launcher.R;
+
+/**
+ * This class adds a stroke to the generic TextView allowing the text to stand out better against
+ * the background (ie. in the AllApps button).
+ */
+public class StrokedTextView extends TextView {
+    private final Canvas mCanvas = new Canvas();
+    private final Paint mPaint = new Paint();
+    private Bitmap mCache;
+    private boolean mUpdateCachedBitmap;
+    private int mStrokeColor;
+    private float mStrokeWidth;
+    private int mTextColor;
+
+    public StrokedTextView(Context context) {
+        super(context);
+        init(context, null, 0);
+    }
+
+    public StrokedTextView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context, attrs, 0);
+    }
+
+    public StrokedTextView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init(context, attrs, defStyle);
+    }
+
+    private void init(Context context, AttributeSet attrs, int defStyle) {
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.StrokedTextView,
+                defStyle, 0);
+        mStrokeColor = a.getColor(R.styleable.StrokedTextView_strokeColor, 0xFF000000);
+        mStrokeWidth = a.getFloat(R.styleable.StrokedTextView_strokeWidth, 0.0f);
+        mTextColor = a.getColor(R.styleable.StrokedTextView_strokeTextColor, 0xFFFFFFFF);
+        a.recycle();
+        mUpdateCachedBitmap = true;
+
+        // Setup the text paint
+        mPaint.setAntiAlias(true);
+        mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
+    }
+
+    protected void onTextChanged(CharSequence text, int start, int before, int after) {
+        super.onTextChanged(text, start, before, after);
+        mUpdateCachedBitmap = true;
+    }
+
+    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+        super.onSizeChanged(w, h, oldw, oldh);
+        if (w > 0 && h > 0) {
+            mUpdateCachedBitmap = true;
+            mCache = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
+        } else {
+            mCache = null;
+        }
+    }
+
+    protected void onDraw(Canvas canvas) {
+        if (mCache != null) {
+            if (mUpdateCachedBitmap) {
+                final int gap = getCompoundDrawablePadding();
+                final int w = getMeasuredWidth();
+                final int h = getMeasuredHeight();
+                final String text = getText().toString();
+                final Rect textBounds = new Rect();
+                final Paint textPaint = getPaint();
+                final int textWidth = (int) textPaint.measureText(text);
+                textPaint.getTextBounds("x", 0, 1, textBounds);
+
+                // Clear the old cached image
+                mCanvas.setBitmap(mCache);
+                mCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
+
+                // Draw the drawable
+                final int drawableLeft = getPaddingLeft();
+                final int drawableTop = getPaddingTop();
+                final Drawable[] drawables = getCompoundDrawables();
+                for (int i = 0; i < drawables.length; ++i) {
+                    if (drawables[i] != null) {
+                        drawables[i].setBounds(drawableLeft, drawableTop,
+                                drawableLeft + drawables[i].getIntrinsicWidth(),
+                                drawableTop + drawables[i].getIntrinsicHeight());
+                        drawables[i].draw(mCanvas);
+                    }
+                }
+
+                final int left = w - getPaddingRight() - textWidth;
+                final int bottom = (h + textBounds.height()) / 2;
+
+                // Draw the outline of the text
+                mPaint.setStrokeWidth(mStrokeWidth);
+                mPaint.setColor(mStrokeColor);
+                mPaint.setTextSize(getTextSize());
+                mCanvas.drawText(text, left, bottom, mPaint);
+
+                // Draw the text itself
+                mPaint.setStrokeWidth(0);
+                mPaint.setColor(mTextColor);
+                mCanvas.drawText(text, left, bottom, mPaint);
+
+                mUpdateCachedBitmap = false;
+            }
+            canvas.drawBitmap(mCache, 0, 0, mPaint);
+        } else {
+            super.onDraw(canvas);
+        }
+    }
+}