Allow RoundRect to have arbitrary radius.

ui/image/image_prepare.cpp

@@ -97,6 +97,20 @@ std::array<QImage, 4> PrepareCorners(
 	return result;
 }
 
+std::array<QImage, 4> CornersMask(int radius) {
+	return PrepareCornersMask(radius);
+}
+
+std::array<QImage, 4> PrepareCorners(
+		int radius,
+		const style::color &color) {
+	auto result = CornersMask(radius);
+	for (auto &image : result) {
+		style::colorizeImage(image, color->c, &image);
+	}
+	return result;
+}
+
 QImage prepareBlur(QImage img) {
 	if (img.isNull()) {
 		return img;

ui/image/image_prepare.h

@@ -27,12 +27,18 @@ namespace Images {
 
 [[nodiscard]] QPixmap PixmapFast(QImage &&image);
 [[nodiscard]] QImage BlurLargeImage(QImage image, int radius);
+
 [[nodiscard]] const std::array<QImage, 4> &CornersMask(
 	ImageRoundRadius radius);
 [[nodiscard]] std::array<QImage, 4> PrepareCorners(
 	ImageRoundRadius radius,
 	const style::color &color);
 
+[[nodiscard]] std::array<QImage, 4> CornersMask(int radius);
+[[nodiscard]] std::array<QImage, 4> PrepareCorners(
+	int radius,
+	const style::color &color);
+
 QImage prepareBlur(QImage image);
 void prepareRound(
 	QImage &image,

ui/round_rect.cpp

@@ -74,6 +74,17 @@ RoundRect::RoundRect(
 	}, _lifetime);
 }
 
+RoundRect::RoundRect(
+	int radius,
+	const style::color &color)
+: _color(color)
+, _corners(Images::PrepareCorners(radius, color)) {
+	style::PaletteChanged(
+	) | rpl::start_with_next([=] {
+		_corners = Images::PrepareCorners(radius, _color);
+	}, _lifetime);
+}
+
 const style::color &RoundRect::color() const {
 	return _color;
 }

ui/round_rect.h

@@ -24,6 +24,7 @@ void DrawRoundedRect(
 class RoundRect final {
 public:
 	RoundRect(ImageRoundRadius radius, const style::color &color);
+	RoundRect(int radius, const style::color &color);
 
 	[[nodiscard]] const style::color &color() const;
 	void paint(