1 files changed, 72 insertions, 0 deletions
diff --git a/src/com/android/phone/common/dialpad/DialpadTextView.java b/src/com/android/phone/common/dialpad/DialpadTextView.java
new file mode 100644
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+++ b/src/com/android/phone/common/dialpad/DialpadTextView.java
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+/*
+ * Copyright (C) 2014 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.phone.common.dialpad;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+/**
+ * This is a custom text view intended only for rendering the numerals (and star and pound) on the
+ * dialpad. TextView has built in top/bottom padding to help account for ascenders/descenders.
+ *
+ * Since vertical space is at a premium on the dialpad, particularly if the font size is scaled to
+ * a larger default, for the dialpad we use this class to more precisely render characters according
+ * to the precise amount of space they need.
+ */
+public class DialpadTextView extends TextView {
+    private Rect mTextBounds = new Rect();
+    private String mTextStr;
+
+    public DialpadTextView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    /**
+     * Draw the text to fit within the height/width which have been specified during measurement.
+     */
+    @Override
+    public void draw(Canvas canvas) {
+        Paint paint = getPaint();
+
+        // Without this, the draw does not respect the style's specified text color.
+        paint.setColor(getCurrentTextColor());
+
+        // The text bounds values are relative and can be negative,, so rather than specifying a
+        // standard origin such as 0, 0, we need to use negative of the left/top bounds.
+        // For example, the bounds may be: Left: 11, Right: 37, Top: -77, Bottom: 0
+        canvas.drawText(mTextStr, -mTextBounds.left, -mTextBounds.top, paint);
+    }
+
+    /**
+     * Calculate the pixel-accurate bounds of the text when rendered, and use that to specify the
+     * height and width.
+     */
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        mTextStr = getText().toString();
+        getPaint().getTextBounds(mTextStr, 0, mTextStr.length(), mTextBounds);
+
+        int width = resolveSize(mTextBounds.width(), widthMeasureSpec);
+        int height = resolveSize(mTextBounds.height(), heightMeasureSpec);
+        setMeasuredDimension(width, height);
+    }
+}