init

Telegram/lib_ui/ui/wrap/follow_slide_wrap.cpp

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+// 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
+//
+#include "ui/wrap/follow_slide_wrap.h"
+
+#include "styles/style_basic.h"
+
+namespace Ui {
+
+FollowSlideWrap<RpWidget>::FollowSlideWrap(
+	QWidget *parent,
+	object_ptr<RpWidget> &&child)
+: Parent(parent, std::move(child))
+, _duration(st::slideWrapDuration) {
+	if (const auto weak = wrapped()) {
+		wrappedSizeUpdated(weak->size());
+		wrappedNaturalWidthUpdated(weak->naturalWidth());
+	}
+}
+
+FollowSlideWrap<RpWidget> *FollowSlideWrap<RpWidget>::setDuration(
+		crl::time duration) {
+	_duration = duration;
+	return this;
+}
+
+void FollowSlideWrap<RpWidget>::wrappedSizeUpdated(QSize size) {
+	updateWrappedPosition(size.height());
+}
+
+void FollowSlideWrap<RpWidget>::wrappedNaturalWidthUpdated(int width) {
+	setNaturalWidth(width);
+}
+
+void FollowSlideWrap<RpWidget>::updateWrappedPosition(int forHeight) {
+	_animation.stop();
+	_animation.start([=](float64 value) {
+		resize(width(), value);
+	}, height(), forHeight, _duration);
+}
+
+} // namespace Ui
+