Pass painting active/inactive state through Painter.

CMakeLists.txt

@@ -47,6 +47,7 @@ PRIVATE
     ui/effects/cross_line.h
     ui/effects/fade_animation.cpp
     ui/effects/fade_animation.h
+    ui/effects/frame_generator.h
     ui/effects/gradient.cpp
     ui/effects/gradient.h
     ui/effects/numbers_animation.cpp

ui/effects/frame_generator.h

@@ -0,0 +1,29 @@
+// 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 <QtGui/QImage>
+
+#include <crl/crl_time.h>
+
+namespace Ui {
+
+class FrameGenerator {
+public:
+	[[nodiscard]] virtual int count() = 0;
+
+	struct Frame {
+		QImage image;
+		crl::time duration = 0;
+	};
+	[[nodiscard]] virtual Frame renderNext(
+		QImage storage,
+		QSize size,
+		Qt::AspectRatioMode mode = Qt::IgnoreAspectRatio) = 0;
+};
+
+} // namespace Ui

ui/painter.h

@@ -69,12 +69,19 @@ public:
 	void restoreTextPalette() {
 		_textPalette = nullptr;
 	}
-	const style::TextPalette &textPalette() const {
+	[[nodiscard]] const style::TextPalette &textPalette() const {
 		return _textPalette ? *_textPalette : st::defaultTextPalette;
 	}
+	void setInactive(bool inactive) {
+		_inactive = inactive;
+	}
+	[[nodiscard]] bool inactive() const {
+		return _inactive;
+	}
 
 private:
 	const style::TextPalette *_textPalette = nullptr;
+	bool _inactive = false;
 
 };
 

ui/text/text.cpp

@@ -1686,7 +1686,10 @@ private:
 								x,
 								y);
 						} else if (const auto custom = static_cast<const CustomEmojiBlock*>(currentBlock)->_custom.get()) {
-							custom->paint(*_p, x, y, _textPalette->spoilerActiveBg->c);
+							if (!_now) {
+								_now = crl::now();
+							}
+							custom->paint(*_p, x, y, _now, _textPalette->spoilerActiveBg->c, _p->inactive());
 						}
 					}
 					if (hasSpoiler) {
@@ -1920,7 +1923,10 @@ private:
 		if (!_background.startMs) {
 			return 1.;
 		}
-		const auto progress = float64(crl::now() - _background.startMs)
+		if (!_now) {
+			_now = crl::now();
+		}
+		const auto progress = float64(_now - _background.startMs)
 			/ st::fadeWrapDuration;
 		if ((progress > 1.) && _background.spoilerIndex) {
 			const auto link = _t->_spoilers.at(_background.spoilerIndex - 1);
@@ -2863,6 +2869,7 @@ private:
 	TextSelection _selection = { 0, 0 };
 	bool _fullWidthSelection = true;
 	const QChar *_str = nullptr;
+	crl::time _now = 0;
 
 	int _indexOfElidedBlock = -1; // For spoilers.
 

ui/text/text_block.h

@@ -11,6 +11,8 @@
 
 #include <private/qfixed_p.h>
 
+#include <crl/crl_time.h>
+
 namespace Ui {
 namespace Text {
 
@@ -168,7 +170,13 @@ class CustomEmoji {
 public:
 	virtual ~CustomEmoji() = default;
 	[[nodiscard]] virtual QString entityData() = 0;
-	virtual void paint(QPainter &p, int x, int y, const QColor &preview) = 0;
+	virtual void paint(
+		QPainter &p,
+		int x,
+		int y,
+		crl::time now,
+		const QColor &preview,
+		bool paused) = 0;
 	virtual void unload() = 0;
 
 };