43 bool IsCongruent(const LayerRect &rect1, const LayerRect &rect2) {  in IsCongruent()  argument
44   return ((rect1.left == rect2.left) &&  in IsCongruent()
45           (rect1.top == rect2.top) &&  in IsCongruent()
46           (rect1.right == rect2.right) &&  in IsCongruent()
47           (rect1.bottom == rect2.bottom));  in IsCongruent()
67 LayerRect Intersection(const LayerRect &rect1, const LayerRect &rect2) {  in Intersection()  argument
70   if (!IsValid(rect1) || !IsValid(rect2)) {  in Intersection()
74   res.left = std::max(rect1.left, rect2.left);  in Intersection()
75   res.top = std::max(rect1.top, rect2.top);  in Intersection()
76   res.right = std::min(rect1.right, rect2.right);  in Intersection()
77   res.bottom = std::min(rect1.bottom, rect2.bottom);  in Intersection()
102 LayerRect Subtract(const LayerRect &rect1, const LayerRect &rect2) {  in Subtract()  argument
107   if ((rect1.left == rect2.left) && (rect1.right == rect2.right)) {  in Subtract()
108     if ((rect1.top == rect2.top) && (rect2.bottom <= rect1.bottom)) {  in Subtract()
109       res.top = rect2.bottom;  in Subtract()
110     } else if ((rect1.bottom == rect2.bottom) && (rect2.top >= rect1.top)) {  in Subtract()
111       res.bottom = rect2.top;  in Subtract()
113   } else if ((rect1.top == rect2.top) && (rect1.bottom == rect2.bottom)) {  in Subtract()
114     if ((rect1.left == rect2.left) && (rect2.right <= rect1.right)) {  in Subtract()
115       res.left = rect2.right;  in Subtract()
116     } else if ((rect1.right == rect2.right) && (rect2.left >= rect1.left)) {  in Subtract()
117       res.right = rect2.left;  in Subtract()
124 LayerRect Union(const LayerRect &rect1, const LayerRect &rect2) {  in Union()  argument
127   if (!IsValid(rect1) && !IsValid(rect2)) {  in Union()
132     return rect2;  in Union()
135   if (!IsValid(rect2)) {  in Union()
139   res.left = std::min(rect1.left, rect2.left);  in Union()
140   res.top = std::min(rect1.top, rect2.top);  in Union()
141   res.right = std::max(rect1.right, rect2.right);  in Union()
142   res.bottom = std::max(rect1.bottom, rect2.bottom);  in Union()