tdesktop/Telegram/SourceFiles/ui/effects/numbers_animation.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
#include "ui/rp_widget.h"
namespace style {
struct FlatLabel;
} // namespace style
namespace Ui {
class NumbersAnimation {
public:
NumbersAnimation(
const style::font &font,
base::lambda<void()> animationCallback);
void setWidthChangedCallback(base::lambda<void()> callback) {
_widthChangedCallback = std::move(callback);
}
void setText(const QString &text, int value);
void stepAnimation(TimeMs ms);
void finishAnimating();
void paint(Painter &p, int x, int y, int outerWidth);
int countWidth() const;
int maxWidth() const;
private:
struct Digit {
QChar from = 0;
QChar to = 0;
int fromWidth = 0;
int toWidth = 0;
};
void animationCallback();
void realSetText(QString text, int value);
const style::font &_font;
QList<Digit> _digits;
int _digitWidth = 0;
int _fromWidth = 0;
int _toWidth = 0;
Animation _a_ready;
QString _delayedText;
int _delayedValue = 0;
int _value = 0;
bool _growing = false;
base::lambda<void()> _animationCallback;
base::lambda<void()> _widthChangedCallback;
};
struct StringWithNumbers {
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();
int naturalWidth() const override {
return _beforeWidth + _numbers.maxWidth() + _afterWidth;
}
protected:
void paintEvent(QPaintEvent *e) override;
private:
static QString GetBefore(const StringWithNumbers &value);
static QString GetAfter(const StringWithNumbers &value);
static QString GetNumbers(const StringWithNumbers &value);
const style::FlatLabel &_st;
int _textTop;
QString _before;
QString _after;
NumbersAnimation _numbers;
int _beforeWidth = 0;
int _afterWidth = 0;
Animation _beforeWidthAnimation;
};
} // namespace Ui
namespace Lang {
template <typename ResultString>
struct StartReplacements;
template <>
struct StartReplacements<Ui::StringWithNumbers> {
static inline Ui::StringWithNumbers Call(QString &&langString) {
return { std::move(langString) };
}
};
template <typename ResultString>
struct ReplaceTag;
template <>
struct ReplaceTag<Ui::StringWithNumbers> {
static Ui::StringWithNumbers Call(
Ui::StringWithNumbers &&original,
ushort tag,
const Ui::StringWithNumbers &replacement);
};
} // namespace Lang