libdeng2|RuleRectangle: Added midX/midY output rules

skyjake · Feb 28, 2014 · 0a4a162 · 0a4a162
1 parent 0acbb96
commit 0a4a162
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Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/doomsday/libdeng2/include/de/widgets/rulerectangle.h b/doomsday/libdeng2/include/de/widgets/rulerectangle.h
@@ -54,6 +54,8 @@ class DENG2_PUBLIC RuleRectangle
     Rule const &bottom() const;
     Rule const &width() const;
     Rule const &height() const;
+    Rule const &midX() const;
+    Rule const &midY() const;
 
     /**
      * Sets one of the input rules of the rectangle.

diff --git a/doomsday/libdeng2/src/widgets/rulerectangle.cpp b/doomsday/libdeng2/src/widgets/rulerectangle.cpp
@@ -47,6 +47,8 @@ DENG2_PIMPL(RuleRectangle)
 
     // The output rules.
     IndirectRule *outputRules[MAX_OUTPUT_RULES];
+    Rule *midX;
+    Rule *midY;
 
     Instance(Public *i) : Base(i)
     {
@@ -61,11 +63,16 @@ DENG2_PIMPL(RuleRectangle)
             outputRules[i] = new IndirectRule;
         }
 
+        midX = holdRef(*outputRules[OutLeft] + *outputRules[OutWidth]  / 2);
+        midY = holdRef(*outputRules[OutTop]  + *outputRules[OutHeight] / 2);
+
         debugName = QString("0x%1").arg(dintptr(thisPublic), 0, 16);
     }
 
     ~Instance()
     {
+        releaseRef(midX);
+        releaseRef(midY);
         releaseRef(normalizedAnchorX);
         releaseRef(normalizedAnchorY);
 
@@ -241,6 +248,16 @@ Rule const &RuleRectangle::height() const
     return *d->outputRules[Instance::OutHeight];
 }
 
+Rule const &RuleRectangle::midX() const
+{
+    return *d->midX;
+}
+
+Rule const &RuleRectangle::midY() const
+{
+    return *d->midY;
+}
+
 RuleRectangle &RuleRectangle::setInput(Rule::Semantic inputRule, Rule const &rule)
 {
     d->setInputRule(inputRule, rule);