1 files changed, 98 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/theme/widget/FittedTextView.java b/src/org/cyanogenmod/theme/widget/FittedTextView.java
new file mode 100644
index 0000000..2451d25
--- /dev/null
+++ b/src/org/cyanogenmod/theme/widget/FittedTextView.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2016 Cyanogen, Inc.
+ * Copyright (C) 2016 The CyanogenMod 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 org.cyanogenmod.theme.widget;
+
+import android.content.Context;
+import android.graphics.Paint;
+import android.text.method.TransformationMethod;
+import android.text.method.AllCapsTransformationMethod;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.widget.TextView;
+
+/**
+ * Change the font size to match the measured
+ * textview size by width
+ *
+ */
+public class FittedTextView extends TextView {
+    private Paint mPaint;
+    //If set to true, the text will be resized to fit the view.
+    private boolean mAutoFitText = true;
+    //Used to instruct whether the text should be expanded to fill out the view, even if the text
+    //fits without being resized
+    private boolean mAutoExpand = true;
+
+    public FittedTextView(Context context) {
+        this(context, null);
+    }
+
+    public FittedTextView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FittedTextView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        mPaint = new Paint();
+    }
+
+    protected void setAutoFitText(boolean autoFit) {
+        mAutoFitText = autoFit;
+    }
+
+    protected boolean getAutoFitText() {
+        return mAutoFitText;
+    }
+
+    protected void setAutoExpand(boolean autoExpand) {
+        mAutoExpand = autoExpand;
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        if (!mAutoFitText) return;
+
+        final float THRESHOLD = 0.5f;
+        final float TARGET_WIDTH = getMeasuredWidth();
+        String text = getText().toString();
+        TransformationMethod tm = getTransformationMethod();
+        if (tm != null && tm instanceof AllCapsTransformationMethod) {
+            text = getText().toString().toUpperCase();
+        }
+        mPaint.set(getPaint());
+
+        if (mPaint.measureText(text) <= TARGET_WIDTH && !mAutoExpand) return;
+
+        float max = 200;
+        float min = 2;
+        while(max > min) {
+            float size = (max+min) / 2;
+            mPaint.setTextSize(size);
+            float measuredWidth = mPaint.measureText(text);
+            if (Math.abs(TARGET_WIDTH - measuredWidth) <= THRESHOLD) {
+                break;
+            } else if (measuredWidth > TARGET_WIDTH) {
+                max = size-1;
+            } else {
+                min = size+1;
+            }
+        }
+        this.setTextSize(TypedValue.COMPLEX_UNIT_PX, min-1);
+    }
+}