@Override
protected void onMeasure(int widthSpec, int heightSpec) {
// Measure all children.
int freeSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
mShutterButton.measure(freeSpec, freeSpec);
mIndicatorControlWheel.measure(freeSpec, freeSpec);
mZoomControlWheel.measure(freeSpec, freeSpec);
// Measure myself. Add some buffer for highlight arc.
int desiredWidth =
mShutterButton.getMeasuredWidth() + IndicatorControlWheel.HIGHLIGHT_WIDTH * 4;
int desiredHeight =
mShutterButton.getMeasuredHeight() + IndicatorControlWheel.HIGHLIGHT_WIDTH * 4;
int widthMode = MeasureSpec.getMode(widthSpec);
int heightMode = MeasureSpec.getMode(heightSpec);
int measuredWidth, measuredHeight;
if (widthMode == MeasureSpec.UNSPECIFIED) {
measuredWidth = desiredWidth;
} else if (widthMode == MeasureSpec.AT_MOST) {
measuredWidth = Math.min(desiredWidth, MeasureSpec.getSize(widthSpec));
} else { // MeasureSpec.EXACTLY
measuredWidth = MeasureSpec.getSize(widthSpec);
}
if (heightMode == MeasureSpec.UNSPECIFIED) {
measuredHeight = desiredHeight;
} else if (heightMode == MeasureSpec.AT_MOST) {
measuredHeight = Math.min(desiredHeight, MeasureSpec.getSize(heightSpec));
} else { // MeasureSpec.EXACTLY
measuredHeight = MeasureSpec.getSize(heightSpec);
}
setMeasuredDimension(measuredWidth, measuredHeight);
}
