init

Telegram/lib_ui/ui/gl/gl_surface.h

@@ -0,0 +1,66 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/gl/gl_detection.h"
+
+#include <QtGui/QOpenGLFunctions>
+
+class Painter;
+class QOpenGLWidget;
+
+namespace Ui {
+class RpWidgetWrap;
+} // namespace Ui
+
+namespace Ui::GL {
+
+class Renderer {
+public:
+	virtual void init(QOpenGLFunctions &f) {
+	}
+
+	virtual void deinit(QOpenGLFunctions *f) {
+	}
+
+	virtual void resize(
+		not_null<QOpenGLWidget*> widget,
+		QOpenGLFunctions &f,
+		int w,
+		int h) {
+	}
+
+	virtual void paint(
+		not_null<QOpenGLWidget*> widget,
+		QOpenGLFunctions &f);
+
+	[[nodiscard]] virtual std::optional<QColor> clearColor() {
+		return std::nullopt;
+	}
+
+	virtual void paintFallback(
+		Painter &p,
+		const QRegion &clip,
+		Backend backend) {
+	}
+
+	virtual ~Renderer() = default;
+};
+
+struct ChosenRenderer {
+	std::unique_ptr<Renderer> renderer;
+	Backend backend = Backend::Raster;
+};
+
+[[nodiscard]] std::unique_ptr<RpWidgetWrap> CreateSurface(
+	Fn<ChosenRenderer(Capabilities)> chooseRenderer);
+
+[[nodiscard]] std::unique_ptr<RpWidgetWrap> CreateSurface(
+	QWidget *parent,
+	ChosenRenderer chosen);
+
+} // namespace Ui::GL