make sure the Region code disallows constructs like "(a+b)=c;", which is somewhat meaningless.
diff --git a/libs/ui/Region.cpp b/libs/ui/Region.cpp
index 065ed54..2e6b241 100644
--- a/libs/ui/Region.cpp
+++ b/libs/ui/Region.cpp
@@ -156,16 +156,16 @@
// ----------------------------------------------------------------------------
-Region Region::merge(const Rect& rhs) const {
+const Region Region::merge(const Rect& rhs) const {
return operation(rhs, op_or);
}
-Region Region::intersect(const Rect& rhs) const {
+const Region Region::intersect(const Rect& rhs) const {
return operation(rhs, op_and);
}
-Region Region::subtract(const Rect& rhs) const {
+const Region Region::subtract(const Rect& rhs) const {
return operation(rhs, op_nand);
}
-Region Region::operation(const Rect& rhs, int op) const {
+const Region Region::operation(const Rect& rhs, int op) const {
Region result;
boolean_operation(op, result, *this, rhs);
return result;
@@ -173,22 +173,22 @@
// ----------------------------------------------------------------------------
-Region Region::merge(const Region& rhs) const {
+const Region Region::merge(const Region& rhs) const {
return operation(rhs, op_or);
}
-Region Region::intersect(const Region& rhs) const {
+const Region Region::intersect(const Region& rhs) const {
return operation(rhs, op_and);
}
-Region Region::subtract(const Region& rhs) const {
+const Region Region::subtract(const Region& rhs) const {
return operation(rhs, op_nand);
}
-Region Region::operation(const Region& rhs, int op) const {
+const Region Region::operation(const Region& rhs, int op) const {
Region result;
boolean_operation(op, result, *this, rhs);
return result;
}
-Region Region::translate(int x, int y) const {
+const Region Region::translate(int x, int y) const {
Region result;
translate(result, *this, x, y);
return result;
@@ -213,16 +213,16 @@
// ----------------------------------------------------------------------------
-Region Region::merge(const Region& rhs, int dx, int dy) const {
+const Region Region::merge(const Region& rhs, int dx, int dy) const {
return operation(rhs, dx, dy, op_or);
}
-Region Region::intersect(const Region& rhs, int dx, int dy) const {
+const Region Region::intersect(const Region& rhs, int dx, int dy) const {
return operation(rhs, dx, dy, op_and);
}
-Region Region::subtract(const Region& rhs, int dx, int dy) const {
+const Region Region::subtract(const Region& rhs, int dx, int dy) const {
return operation(rhs, dx, dy, op_nand);
}
-Region Region::operation(const Region& rhs, int dx, int dy, int op) const {
+const Region Region::operation(const Region& rhs, int dx, int dy, int op) const {
Region result;
boolean_operation(op, result, *this, rhs, dx, dy);
return result;