Initial commitHEADmain

1 files changed, 30 insertions, 0 deletions

diff --git a/src/size.hh b/src/size.hh
new file mode 100644
index 0000000..8fcc53f
--- /dev/null
+++ b/src/size.hh
@@ -0,0 +1,30 @@
+#ifndef SIZE_HH
+#define SIZE_HH
+
+#include <compare>
+#include <cstdint>
+
+struct Size final {
+  Size() : width(0), height(0) {}
+  Size(uint32_t width, uint32_t height) : width(width), height(height) {}
+
+  bool empty() const { return width == 0 || height == 0; }
+
+  operator bool() const { return !empty(); }
+
+  std::strong_ordering operator<=>(Size const& other) const {
+    if (empty()) {
+      return other.empty() ? std::strong_ordering::equal
+                           : std::strong_ordering::less;
+    }
+    if (other.empty())
+      return std::strong_ordering::greater;
+    auto ret = width <=> other.width;
+    return ret == std::strong_ordering::equal ? height <=> other.height : ret;
+  }
+
+  uint32_t width;
+  uint32_t height;
+};
+
+#endif  // SIZE_HH