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Telegram/lib_ui/ui/wrap/table_layout.h

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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
+//
+#pragma once
+
+#include "base/object_ptr.h"
+#include "ui/rp_widget.h"
+
+namespace style {
+struct Table;
+} // namespace style
+
+namespace st {
+extern const style::Table &defaultTable;
+} // namespace st
+
+namespace Ui {
+
+class TableLayout : public RpWidget {
+public:
+	TableLayout(QWidget *parent, const style::Table &st = st::defaultTable);
+	~TableLayout();
+
+	[[nodiscard]] const style::Table &st() const {
+		return _st;
+	}
+
+	[[nodiscard]] int rowsCount() const {
+		return _rows.size();
+	}
+
+	[[nodiscard]] not_null<RpWidget*> labelAt(int index) const {
+		Expects(index >= 0 && index < rowsCount());
+
+		return _rows[index].label.data();
+	}
+	[[nodiscard]] not_null<RpWidget*> valueAt(int index) const {
+		Expects(index >= 0 && index < rowsCount());
+
+		return _rows[index].value.data();
+	}
+
+	void insertRow(
+		int atPosition,
+		object_ptr<RpWidget> &&label,
+		object_ptr<RpWidget> &&value,
+		const style::margins &labelMargin = style::margins(),
+		const style::margins &valueMargin = style::margins());
+
+	void addRow(
+			object_ptr<RpWidget> &&label,
+			object_ptr<RpWidget> &&value,
+			const style::margins &labelMargin = style::margins(),
+			const style::margins &valueMargin = style::margins()) {
+		insertRow(
+			rowsCount(),
+			std::move(label),
+			std::move(value),
+			labelMargin,
+			valueMargin);
+	}
+
+	void clear();
+
+protected:
+	void paintEvent(QPaintEvent *e) override;
+
+	int resizeGetHeight(int newWidth) override;
+	void visibleTopBottomUpdated(
+		int visibleTop,
+		int visibleBottom) override;
+
+private:
+	struct Row {
+		object_ptr<RpWidget> label;
+		object_ptr<RpWidget> value;
+		style::margins labelMargin;
+		style::margins valueMargin;
+		mutable int top = 0;
+	};
+
+	[[nodiscard]] int rowVerticalSkip(const Row &row) const;
+	void childHeightUpdated(RpWidget *child);
+	void removeChild(RpWidget *child);
+	void updateRowGeometry(const Row &row, int width, int top) const;
+	void updateRowPosition(const Row &row, int width, int top) const;
+
+	const style::Table &_st;
+
+	std::vector<Row> _rows;
+	int _valueLeft = 0;
+	bool _inResize = false;
+
+	rpl::lifetime _rowsLifetime;
+
+};
+
+} // namespace Ui