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()
62 LayerRect Intersection(const LayerRect &rect1, const LayerRect &rect2) {  in Intersection()  argument
65   if (!IsValid(rect1) || !IsValid(rect2)) {  in Intersection()
69   res.left = std::max(rect1.left, rect2.left);  in Intersection()
70   res.top = std::max(rect1.top, rect2.top);  in Intersection()
71   res.right = std::min(rect1.right, rect2.right);  in Intersection()
72   res.bottom = std::min(rect1.bottom, rect2.bottom);  in Intersection()
97 LayerRect Subtract(const LayerRect &rect1, const LayerRect &rect2) {  in Subtract()  argument
102   if ((rect1.left == rect2.left) && (rect1.right == rect2.right)) {  in Subtract()
103     if ((rect1.top == rect2.top) && (rect2.bottom <= rect1.bottom)) {  in Subtract()
104       res.top = rect2.bottom;  in Subtract()
105     } else if ((rect1.bottom == rect2.bottom) && (rect2.top >= rect1.top)) {  in Subtract()
106       res.bottom = rect2.top;  in Subtract()
108   } else if ((rect1.top == rect2.top) && (rect1.bottom == rect2.bottom)) {  in Subtract()
109     if ((rect1.left == rect2.left) && (rect2.right <= rect1.right)) {  in Subtract()
110       res.left = rect2.right;  in Subtract()
111     } else if ((rect1.right == rect2.right) && (rect2.left >= rect1.left)) {  in Subtract()
112       res.right = rect2.left;  in Subtract()
119 LayerRect Union(const LayerRect &rect1, const LayerRect &rect2) {  in Union()  argument
122   if (!IsValid(rect1) && !IsValid(rect2)) {  in Union()
127     return rect2;  in Union()
130   if (!IsValid(rect2)) {  in Union()
134   res.left = std::min(rect1.left, rect2.left);  in Union()
135   res.top = std::min(rect1.top, rect2.top);  in Union()
136   res.right = std::max(rect1.right, rect2.right);  in Union()
137   res.bottom = std::max(rect1.bottom, rect2.bottom);  in Union()