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Telegram/SourceFiles/platform/platform_overlay_widget.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Ui {
+class RpWindow;
+} // namespace Ui
+
+namespace Ui::Platform {
+struct SeparateTitleControls;
+} // namespace Ui::Platform
+
+namespace Media::View {
+
+inline constexpr auto kMaximizedIconOpacity = 0.6;
+inline constexpr auto kNormalIconOpacity = 0.9;
+inline constexpr auto kOverBackgroundOpacity = 0.2775;
+inline constexpr auto kStoriesNavOpacity = 0.3;
+inline constexpr auto kStoriesNavOverOpacity = 0.7;
+[[nodiscard]] QColor OverBackgroundColor();
+
+} // namespace Media::View
+
+namespace Platform {
+
+class OverlayWidgetHelper {
+public:
+	virtual ~OverlayWidgetHelper() = default;
+
+	virtual void orderWidgets() {
+	}
+	[[nodiscard]] virtual bool skipTitleHitTest(QPoint position) {
+		return false;
+	}
+	[[nodiscard]] virtual rpl::producer<> controlsActivations() {
+		return rpl::never<>();
+	}
+	[[nodiscard]] virtual rpl::producer<bool> controlsSideRightValue() {
+		return rpl::single(true);
+	}
+	virtual void beforeShow(bool fullscreen) {
+	}
+	virtual void afterShow(bool fullscreen) {
+	}
+	virtual void notifyFileDialogShown(bool shown) {
+	}
+	virtual void minimize(not_null<Ui::RpWindow*> window);
+	virtual void clearState() {
+	}
+	virtual void setControlsOpacity(float64 opacity) {
+	}
+	[[nodiscard]] virtual auto mouseEvents() const
+	-> rpl::producer<not_null<QMouseEvent*>> {
+		return rpl::never<not_null<QMouseEvent*>>();
+	}
+	[[nodiscard]] virtual rpl::producer<int> topNotchSkipValue() {
+		return rpl::single(0);
+	}
+};
+
+[[nodiscard]] std::unique_ptr<OverlayWidgetHelper> CreateOverlayWidgetHelper(
+	not_null<Ui::RpWindow*> window,
+	Fn<void(bool)> maximize);
+
+class DefaultOverlayWidgetHelper final : public OverlayWidgetHelper {
+public:
+	DefaultOverlayWidgetHelper(
+		not_null<Ui::RpWindow*> window,
+		Fn<void(bool)> maximize);
+	~DefaultOverlayWidgetHelper();
+
+	void orderWidgets() override;
+	bool skipTitleHitTest(QPoint position) override;
+	rpl::producer<> controlsActivations() override;
+	void beforeShow(bool fullscreen) override;
+	void clearState() override;
+	void setControlsOpacity(float64 opacity) override;
+	rpl::producer<bool> controlsSideRightValue() override;
+	rpl::producer<not_null<QMouseEvent*>> mouseEvents() const override;
+
+private:
+	class Buttons;
+
+	const not_null<Buttons*> _buttons;
+	const std::unique_ptr<Ui::Platform::SeparateTitleControls> _controls;
+
+};
+
+} // namespace Platform
+
+// Platform dependent implementations.
+
+#ifdef Q_OS_WIN
+#include "platform/win/overlay_widget_win.h"
+#elif defined Q_OS_MAC // Q_OS_WIN
+#include "platform/mac/overlay_widget_mac.h"
+#else // Q_OS_WIN || Q_OS_MAC
+#include "platform/linux/overlay_widget_linux.h"
+#endif // else for Q_OS_WIN || Q_OS_MAC