1 files changed, 56 insertions, 0 deletions
diff --git a/library/src/main/kotlin/ca/allanwang/kau/views/KauBoundedCardView.kt b/library/src/main/kotlin/ca/allanwang/kau/views/KauBoundedCardView.kt
new file mode 100644
index 0000000..a07a118
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/views/KauBoundedCardView.kt
@@ -0,0 +1,56 @@
+package ca.allanwang.kau.views
+
+import android.content.Context
+import android.graphics.Rect
+import android.support.v7.widget.CardView
+import android.util.AttributeSet
+import ca.allanwang.kau.R
+import ca.allanwang.kau.utils.parentViewGroup
+
+
+/**
+ * Created by Allan Wang on 2017-06-26.
+ *
+ * CardView with a limited height
+ * This view should be used with wrap_content as its height
+ * Defaults to at most the parent's visible height
+ */
+class KauBoundedCardView @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+) : CardView(context, attrs, defStyleAttr) {
+
+    val parentVisibleHeight: Int
+        get() {
+            val r = Rect()
+            parentViewGroup.getWindowVisibleDisplayFrame(r)
+            return r.height()
+        }
+
+    /**
+     * Maximum height possible, defined in dp (will be converted to px)
+     * Defaults to parent's visible height
+     */
+    var maxHeight: Int = -1
+    /**
+     * Percentage of resulting max height to fill
+     * Negative value = fill all of maxHeight
+     */
+    var maxHeightPercent: Float = -1.0f
+
+    init {
+        if (attrs != null) {
+            val styledAttrs = context.obtainStyledAttributes(attrs, R.styleable.KauBoundedCardView)
+            maxHeight = styledAttrs.getDimensionPixelSize(R.styleable.KauBoundedCardView_kau_maxHeight, -1)
+            maxHeightPercent = styledAttrs.getFloat(R.styleable.KauBoundedCardView_kau_maxHeightPercent, -1.0f)
+            styledAttrs.recycle()
+        }
+    }
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        var maxMeasureHeight = if (maxHeight > 0) maxHeight else parentVisibleHeight
+        if (maxHeightPercent > 0f) maxMeasureHeight = (maxMeasureHeight * maxHeightPercent).toInt()
+        val trueHeightMeasureSpec = MeasureSpec.makeMeasureSpec(maxMeasureHeight, MeasureSpec.AT_MOST)
+        super.onMeasure(widthMeasureSpec, trueHeightMeasureSpec)
+    }
+
+}
+\ No newline at end of file