Make a SharedGraphics directory for classes shared between Kernel and LibGUI.

1 files changed, 35 insertions, 0 deletions

diff --git a/SharedGraphics/Rect.cpp b/SharedGraphics/Rect.cpp
new file mode 100644
index 0000000000..5b01bf2e1e
--- /dev/null
+++ b/SharedGraphics/Rect.cpp
@@ -0,0 +1,35 @@
+#include "Rect.h"
+#include <AK/StdLibExtras.h>
+
+void Rect::intersect(const Rect& other)
+{
+    int l = max(left(), other.left());
+    int r = min(right(), other.right());
+    int t = max(top(), other.top());
+    int b = min(bottom(), other.bottom());
+
+    if (l >= r || t >= b) {
+        m_location = { };
+        m_size = { };
+        return;
+    }
+
+    m_location.set_x(l);
+    m_location.set_y(t);
+    m_size.set_width((r - l) + 1);
+    m_size.set_height((b - t) + 1);
+}
+
+Rect Rect::united(const Rect& other) const
+{
+    if (is_null())
+        return other;
+    if (other.is_null())
+        return *this;
+    Rect rect;
+    rect.set_left(min(left(), other.left()));
+    rect.set_top(min(top(), other.top()));
+    rect.set_right(max(right(), other.right()));
+    rect.set_bottom(max(bottom(), other.bottom()));
+    return rect;
+}