...

1 files changed, 14 insertions, 0 deletions

diff --git a/include/cru/platform/painter_util.hpp b/include/cru/platform/painter_util.hpp
new file mode 100644
index 00000000..fed0c487
--- /dev/null
+++ b/include/cru/platform/painter_util.hpp
@@ -0,0 +1,14 @@
+#pragma once
+#include "painter.hpp"
+
+#include <functional>
+
+namespace cru::platform::util {
+inline void WithTransform(Painter* painter, const Matrix& matrix,
+                   const std::function<void(Painter*)>& action) {
+  const auto old = painter->GetTransform();
+  painter->SetTransform(old * matrix);
+  action(painter);
+  painter->SetTransform(old);
+}
+}