math/region: add expand

hyprwm · Jul 5, 2024 · a8c3a13 · a8c3a13
1 parent 259ecfa
commit a8c3a13
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diff --git a/include/hyprutils/math/Region.hpp b/include/hyprutils/math/Region.hpp
@@ -49,6 +49,7 @@ namespace Hyprutils {
             CRegion&                    invert(const CBox& box);
             CRegion&                    scale(float scale);
             CRegion&                    scale(const Vector2D& scale);
+            CRegion&                    expand(double units);
             CRegion&                    rationalize();
             CBox                        getExtents();
             bool                        containsPoint(const Vector2D& vec) const;

diff --git a/src/math/Region.cpp b/src/math/Region.cpp
@@ -112,6 +112,19 @@ CRegion& Hyprutils::Math::CRegion::transform(const eTransform t, double w, doubl
     return *this;
 }
 
+CRegion& Hyprutils::Math::CRegion::expand(double units) {
+    auto rects = getRects();
+
+    clear();
+
+    for (auto& r : rects) {
+        CBox b{(double)r.x1 - units, (double)r.y1 - units, (double)r.x2 - r.x1 + units * 2, (double)r.y2 - r.y1 + units * 2};
+        add(b);
+    }
+
+    return *this;
+}
+
 CRegion& Hyprutils::Math::CRegion::rationalize() {
     intersect(CBox{-MAX_REGION_SIDE, -MAX_REGION_SIDE, MAX_REGION_SIDE * 2, MAX_REGION_SIDE * 2});
     return *this;