WeightedLinearLayoutpublic class WeightedLinearLayout extends android.widget.LinearLayout | A special layout when measured in AT_MOST will take up a given percentage of
the available space. |
| Fields Summary |
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| private float | mMajorWeightMin | | private float | mMinorWeightMin | | private float | mMajorWeightMax | | private float | mMinorWeightMax |
| Constructors Summary |
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public WeightedLinearLayout(android.content.Context context)
super(context);
| public WeightedLinearLayout(android.content.Context context, android.util.AttributeSet attrs)
super(context, attrs);
TypedArray a =
context.obtainStyledAttributes(attrs, styleable.WeightedLinearLayout);
mMajorWeightMin = a.getFloat(styleable.WeightedLinearLayout_majorWeightMin, 0.0f);
mMinorWeightMin = a.getFloat(styleable.WeightedLinearLayout_minorWeightMin, 0.0f);
mMajorWeightMax = a.getFloat(styleable.WeightedLinearLayout_majorWeightMax, 0.0f);
mMinorWeightMax = a.getFloat(styleable.WeightedLinearLayout_minorWeightMax, 0.0f);
a.recycle();
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| Methods Summary |
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| protected void | onMeasure(int widthMeasureSpec, int heightMeasureSpec)
final DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
final int screenWidth = metrics.widthPixels;
final boolean isPortrait = screenWidth < metrics.heightPixels;
final int widthMode = getMode(widthMeasureSpec);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = getMeasuredWidth();
boolean measure = false;
widthMeasureSpec = MeasureSpec.makeMeasureSpec(width, EXACTLY);
final float widthWeightMin = isPortrait ? mMinorWeightMin : mMajorWeightMin;
final float widthWeightMax = isPortrait ? mMinorWeightMax : mMajorWeightMax;
if (widthMode == AT_MOST) {
final int weightedMin = (int) (screenWidth * widthWeightMin);
final int weightedMax = (int) (screenWidth * widthWeightMin);
if (widthWeightMin > 0.0f && width < weightedMin) {
widthMeasureSpec = MeasureSpec.makeMeasureSpec(weightedMin, EXACTLY);
measure = true;
} else if (widthWeightMax > 0.0f && width > weightedMax) {
widthMeasureSpec = MeasureSpec.makeMeasureSpec(weightedMax, EXACTLY);
measure = true;
}
}
// TODO: Support height?
if (measure) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
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