Added new method Rectangle::toNearestIntEdges(), and used this to improve the Grid layout snapping

modules/juce_graphics/geometry/juce_Rectangle.h

@@ -794,7 +794,7 @@ public:
     */
     Rectangle transformedBy (const AffineTransform& transform) const noexcept
     {
-        typedef typename TypeHelpers::SmallestFloatType<ValueType>::type FloatType;
+        using FloatType = typename TypeHelpers::SmallestFloatType<ValueType>::type;
 
         auto x1 = static_cast<FloatType> (pos.x),     y1 = static_cast<FloatType> (pos.y);
         auto x2 = static_cast<FloatType> (pos.x + w), y2 = static_cast<FloatType> (pos.y);
@@ -816,7 +816,7 @@ public:
 
     /** Returns the smallest integer-aligned rectangle that completely contains this one.
         This is only relevant for floating-point rectangles, of course.
-        @see toFloat(), toNearestInt()
+        @see toFloat(), toNearestInt(), toNearestIntEdges()
     */
     Rectangle<int> getSmallestIntegerContainer() const noexcept
     {
@@ -829,7 +829,7 @@ public:
     /** Casts this rectangle to a Rectangle<int>.
         This uses roundToInt to snap x, y, width and height to the nearest integer (losing precision).
         If the rectangle already uses integers, this will simply return a copy.
-        @see getSmallestIntegerContainer()
+        @see getSmallestIntegerContainer(), toNearestIntEdges()
     */
     Rectangle<int> toNearestInt() const noexcept
     {
@@ -837,6 +837,17 @@ public:
                  roundToInt (w),     roundToInt (h) };
     }
 
+    /** Casts this rectangle to a Rectangle<int>.
+        This uses roundToInt to snap top, left, right and bottom to the nearest integer (losing precision).
+        If the rectangle already uses integers, this will simply return a copy.
+        @see getSmallestIntegerContainer(), toNearestInt()
+    */
+    Rectangle<int> toNearestIntEdges() const noexcept
+    {
+        return Rectangle<int>::leftTopRightBottom (roundToInt (pos.x),       roundToInt (pos.y),
+                                                   roundToInt (getRight()),  roundToInt (getBottom()));
+    }
+
     /** Casts this rectangle to a Rectangle<float>.
         @see getSmallestIntegerContainer
     */

modules/juce_gui_basics/layout/juce_Grid.cpp

@@ -1017,7 +1017,7 @@ void Grid::performLayout (juce::Rectangle<int> targetArea)
                                 + targetArea.toFloat().getPosition();
 
         if (auto* c = item->associatedComponent)
-            c->setBounds (item->currentBounds.toNearestInt());
+            c->setBounds (item->currentBounds.toNearestIntEdges());
     }
 }