init

Telegram/SourceFiles/history/view/history_view_object.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 HistoryView {
+
+class Object {
+public:
+	Object() = default;
+	Object(const Object &other) = delete;
+	Object &operator=(const Object &other) = delete;
+
+	void initDimensions() {
+		setOptimalSize(countOptimalSize());
+	}
+	int resizeGetHeight(int newWidth) {
+		setCurrentSize(countCurrentSize(newWidth));
+		return _height;
+	}
+
+	[[nodiscard]] QSize optimalSize() const {
+		return { _maxWidth, _minHeight };
+	}
+	[[nodiscard]] QSize currentSize() const {
+		return { _width, _height };
+	}
+
+	[[nodiscard]] int maxWidth() const {
+		return _maxWidth;
+	}
+	[[nodiscard]] int minHeight() const {
+		return _minHeight;
+	}
+	[[nodiscard]] int width() const {
+		return _width;
+	}
+	[[nodiscard]] int height() const {
+		return _height;
+	}
+
+	virtual ~Object() = default;
+
+protected:
+	void setOptimalSize(QSize size) {
+		_maxWidth = size.width();
+		_minHeight = size.height();
+	}
+	void setCurrentSize(QSize size) {
+		_width = size.width();
+		_height = size.height();
+	}
+
+private:
+	virtual QSize countOptimalSize() = 0;
+	virtual QSize countCurrentSize(int newWidth) = 0;
+
+	int _maxWidth = 0;
+	int _minHeight = 0;
+	int _width = 0;
+	int _height = 0;
+
+};
+
+} // namespace HistoryView