1 files changed, 42 insertions, 0 deletions
diff --git a/src/com/android/camera/ui/MeasureHelper.java b/src/com/android/camera/ui/MeasureHelper.java
new file mode 100644
index 0000000..943b243
--- /dev/null
+++ b/src/com/android/camera/ui/MeasureHelper.java
@@ -0,0 +1,42 @@
+package com.android.camera.ui;
+
+import android.graphics.Rect;
+import android.view.View.MeasureSpec;
+
+public class MeasureHelper {
+
+    private final GLView mComponent;
+    private int mPreferedWidth;
+    private int mPreferedHeight;
+
+    public MeasureHelper(GLView component) {
+        mComponent = component;
+    }
+
+    public MeasureHelper setPreferedContentSize(int width, int height) {
+        mPreferedWidth = width;
+        mPreferedHeight = height;
+        return this;
+    }
+
+    public void measure(int widthSpec, int heightSpec) {
+        Rect p = mComponent.getPaddings();
+        setMeasuredSize(
+                getLength(widthSpec, mPreferedWidth + p.left + p.right),
+                getLength(heightSpec, mPreferedHeight + p.top + p.bottom));
+    }
+
+    private static int getLength(int measureSpec, int prefered) {
+        int specLength = MeasureSpec.getSize(measureSpec);
+        switch(MeasureSpec.getMode(measureSpec)) {
+            case MeasureSpec.EXACTLY: return specLength;
+            case MeasureSpec.AT_MOST: return Math.min(prefered, specLength);
+            default: return prefered;
+        }
+    }
+
+    protected void setMeasuredSize(int width, int height) {
+        mComponent.setMeasuredSize(width, height);
+    }
+
+}