init

Telegram/lib_ui/ui/ui_utility.h

@@ -0,0 +1,141 @@
+// 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 "base/unique_qptr.h"
+
+#include <crl/crl.h>
+#include <QtCore/QEvent>
+#include <QtWidgets/QWidget>
+
+class QPixmap;
+class QImage;
+class QWheelEvent;
+
+template <typename Object>
+class object_ptr;
+
+namespace Ui {
+
+inline constexpr auto kPixelToAngleDelta = 2;
+
+template <typename Widget, typename ...Args>
+inline base::unique_qptr<Widget> CreateObject(Args &&...args) {
+	return base::make_unique_q<Widget>(
+		nullptr,
+		std::forward<Args>(args)...);
+}
+
+inline void DestroyChild(QWidget *child) {
+	delete child;
+}
+
+template <typename ...Args>
+inline auto Connect(Args &&...args) {
+	return QObject::connect(std::forward<Args>(args)...);
+}
+
+template <typename Value>
+inline not_null<std::decay_t<Value>*> AttachAsChild(
+		not_null<QObject*> parent,
+		Value &&value) {
+	return WrapAsQObject(parent, std::forward<Value>(value))->value();
+}
+
+[[nodiscard]] bool AppInFocus();
+[[nodiscard]] bool InFocusChain(not_null<const QWidget*> widget);
+
+template <typename ChildWidget>
+inline ChildWidget *AttachParentChild(
+		not_null<QWidget*> parent,
+		const object_ptr<ChildWidget> &child) {
+	if (const auto raw = child.data()) {
+		raw->setParent(parent);
+		raw->show();
+		return raw;
+	}
+	return nullptr;
+}
+
+void SendPendingMoveResizeEvents(not_null<QWidget*> target);
+
+[[nodiscard]] QPixmap GrabWidget(
+	not_null<QWidget*> target,
+	QRect rect = QRect(),
+	QColor bg = QColor(255, 255, 255, 0));
+
+[[nodiscard]] QImage GrabWidgetToImage(
+	not_null<QWidget*> target,
+	QRect rect = QRect(),
+	QColor bg = QColor(255, 255, 255, 0));
+
+void RenderWidget(
+	QPainter &painter,
+	not_null<QWidget*> source,
+	const QPoint &targetOffset = QPoint(),
+	const QRegion &sourceRegion = QRegion(),
+	QWidget::RenderFlags renderFlags
+	= QWidget::DrawChildren | QWidget::IgnoreMask);
+
+void ForceFullRepaint(not_null<QWidget*> widget);
+void ForceFullRepaintSync(not_null<QWidget*> widget);
+
+void PostponeCall(FnMut<void()> &&callable);
+
+template <
+	typename Guard,
+	typename Callable,
+	typename GuardTraits = crl::guard_traits<std::decay_t<Guard>>,
+	typename = std::enable_if_t<
+	sizeof(GuardTraits) != crl::details::dependent_zero<GuardTraits>>>
+inline void PostponeCall(Guard && object, Callable && callable) {
+	return PostponeCall(crl::guard(
+		std::forward<Guard>(object),
+		std::forward<Callable>(callable)));
+}
+
+void SendSynteticMouseEvent(
+	QWidget *widget,
+	QEvent::Type type,
+	Qt::MouseButton button,
+	const QPoint &globalPoint);
+
+inline void SendSynteticMouseEvent(
+		QWidget *widget,
+		QEvent::Type type,
+		Qt::MouseButton button) {
+	return SendSynteticMouseEvent(widget, type, button, QCursor::pos());
+}
+
+[[nodiscard]] QPixmap PixmapFromImage(QImage &&image);
+
+[[nodiscard]] bool IsContentVisible(
+	not_null<QWidget*> widget,
+	const QRect &rect = QRect());
+
+int WheelDirection(not_null<QWheelEvent*> e);
+
+[[nodiscard]] QPoint MapFrom(
+	not_null<QWidget*> to,
+	not_null<QWidget*> from,
+	QPoint point);
+
+[[nodiscard]] QRect MapFrom(
+	not_null<QWidget*> to,
+	not_null<QWidget*> from,
+	QRect rect);
+
+[[nodiscard]] QPointF ScrollDeltaF(
+	not_null<QWheelEvent*> e,
+	bool touch = false);
+[[nodiscard]] QPoint ScrollDelta(
+	not_null<QWheelEvent*> e,
+	bool touch = false);
+
+[[nodiscard]] QColor BlendColors(QColor color1, QColor color2, float64 ratio);
+
+} // namespace Ui