init

Telegram/lib_ui/ui/effects/numbers_animation.h

@@ -0,0 +1,114 @@
+// 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 "ui/rp_widget.h"
+#include "ui/effects/animations.h"
+
+namespace style {
+struct FlatLabel;
+} // namespace style
+
+namespace Ui {
+
+class NumbersAnimation {
+public:
+	NumbersAnimation(
+		const style::font &font,
+		Fn<void()> animationCallback);
+
+	void setWidthChangedCallback(Fn<void()> callback) {
+		_widthChangedCallback = std::move(callback);
+	}
+	void setText(const QString &text, int value);
+	void setDuration(int duration);
+	void setDisabledMonospace(bool value);
+	void finishAnimating();
+
+	void paint(QPainter &p, int x, int y, int outerWidth);
+	int countWidth() const;
+	int maxWidth() const;
+
+private:
+	struct Digit {
+		QChar from = QChar(0);
+		QChar to = QChar(0);
+		int fromWidth = 0;
+		int toWidth = 0;
+	};
+
+	void animationCallback();
+	void realSetText(QString text, int value);
+
+	const style::font &_font;
+
+	int _duration;
+
+	QList<Digit> _digits;
+	int _digitWidth = 0;
+
+	int _fromWidth = 0;
+	int _toWidth = 0;
+	int _bothWidth = 0;
+
+	Ui::Animations::Simple _a_ready;
+	QString _delayedText;
+	int _delayedValue = 0;
+
+	int _value = 0;
+	bool _growing = false;
+
+	bool _disabledMonospace = false;
+
+	Fn<void()> _animationCallback;
+	Fn<void()> _widthChangedCallback;
+
+};
+
+struct StringWithNumbers {
+	static StringWithNumbers FromString(const QString &text) {
+		return { text };
+	}
+
+	QString text;
+	int offset = -1;
+	int length = 0;
+};
+
+class LabelWithNumbers : public Ui::RpWidget {
+public:
+	LabelWithNumbers(
+		QWidget *parent,
+		const style::FlatLabel &st,
+		int textTop,
+		const StringWithNumbers &value);
+
+	void setValue(const StringWithNumbers &value);
+	void finishAnimating();
+
+protected:
+	void paintEvent(QPaintEvent *e) override;
+
+private:
+	[[nodiscard]] static QString GetBefore(const StringWithNumbers &value);
+	[[nodiscard]] static QString GetAfter(const StringWithNumbers &value);
+	[[nodiscard]] static QString GetNumbers(const StringWithNumbers &value);
+
+	void updateNaturalWidth();
+
+	const style::FlatLabel &_st;
+	int _textTop;
+	QString _before;
+	QString _after;
+	NumbersAnimation _numbers;
+	int _beforeWidth = 0;
+	int _afterWidth = 0;
+	Ui::Animations::Simple _beforeWidthAnimation;
+
+};
+
+} // namespace Ui