65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#pragma once
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#include "ui/style/style_core_types.h"
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#include <QtGui/QLinearGradient>
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namespace Ui {
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class PathShiftGradient final {
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public:
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PathShiftGradient(
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const style::color &bg,
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const style::color &fg,
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Fn<void()> animationCallback,
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rpl::producer<> paletteUpdated = nullptr);
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~PathShiftGradient();
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void startFrame(
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int viewportLeft,
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int viewportWidth,
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int gradientWidth);
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void overrideColors(const style::color &bg, const style::color &fg);
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void clearOverridenColors();
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using Background = std::variant<QLinearGradient*, style::color>;
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bool paint(Fn<bool(const Background&)> painter);
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private:
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struct AnimationData;
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void refreshColors();
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void refreshColors(const style::color &bg, const style::color &fg);
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void updateGeometry();
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void activateAnimation();
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static std::weak_ptr<AnimationData> Animation;
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const style::color &_bg;
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const style::color &_fg;
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const style::color *_bgOverride = nullptr;
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QLinearGradient _gradient;
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std::shared_ptr<AnimationData> _animation;
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const Fn<void()> _animationCallback;
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int _viewportLeft = 0;
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int _viewportWidth = 0;
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int _gradientWidth = 0;
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int _gradientStart = 0;
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int _gradientFinalStop = 0;
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bool _gradientEnabled = false;
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bool _geometryUpdated = false;
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bool _animationActive = false;
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bool _colorsOverriden = false;
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rpl::lifetime _lifetime;
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};
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} // namespace Ui
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