init

Telegram/lib_ui/ui/wrap/padding_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/padding_wrap.h"
+
+#include "ui/ui_utility.h"
+
+namespace Ui {
+
+PaddingWrap<RpWidget>::PaddingWrap(
+	QWidget *parent,
+	object_ptr<RpWidget> &&child,
+	const style::margins &padding)
+: Parent(parent, std::move(child)) {
+	setPadding(padding);
+	if (auto weak = wrapped()) {
+		wrappedNaturalWidthUpdated(weak->naturalWidth());
+	}
+}
+
+void PaddingWrap<RpWidget>::setPadding(const style::margins &padding) {
+	if (_padding != padding) {
+		auto oldWidth = width() - _padding.left() - _padding.top();
+		_padding = padding;
+
+		if (auto weak = wrapped()) {
+			wrappedSizeUpdated(weak->size());
+
+			auto margins = weak->getMargins();
+			weak->moveToLeft(
+				_padding.left() + margins.left(),
+				_padding.top() + margins.top());
+		} else {
+			resize(QSize(
+				_padding.left() + oldWidth + _padding.right(),
+				_padding.top() + _padding.bottom()));
+		}
+	}
+}
+
+void PaddingWrap<RpWidget>::wrappedSizeUpdated(QSize size) {
+	resize(QRect(QPoint(), size).marginsAdded(_padding).size());
+}
+
+void PaddingWrap<RpWidget>::wrappedNaturalWidthUpdated(int width) {
+	setNaturalWidth((width < 0)
+		? width
+		: (_padding.left() + width + _padding.right()));
+}
+
+int PaddingWrap<RpWidget>::resizeGetHeight(int newWidth) {
+	if (auto weak = wrapped()) {
+		weak->resizeToWidth(newWidth
+			- _padding.left()
+			- _padding.right());
+		SendPendingMoveResizeEvents(weak);
+	} else {
+		resize(QSize(
+			_padding.left() + newWidth + _padding.right(),
+			_padding.top() + _padding.bottom()));
+	}
+	return heightNoMargins();
+}
+
+} // namespace Ui