Returned render color theme in main menu when background is filled.

Telegram/SourceFiles/window/themes/window_theme.cpp

@@ -49,6 +49,20 @@ inline bool AreTestingTheme() {
 	return !GlobalApplying.paletteForRevert.isEmpty();
 };
 
+bool CalculateIsMonoColorImage(const QImage &image) {
+	if (!image.isNull()) {
+		const auto bits = reinterpret_cast<const uint32*>(image.constBits());
+		const auto first = bits[0];
+		for (auto i = 0; i < image.width() * image.height(); i++) {
+			if (first != bits[i]) {
+				return false;
+			}
+		}
+		return true;
+	}
+	return false;
+}
+
 QByteArray readThemeContent(const QString &path) {
 	QFile file(path);
 	if (!file.exists()) {
@@ -580,6 +594,7 @@ void ChatBackground::preparePixmaps(QImage image) {
 		}
 		_pixmapForTiled = App::pixmapFromImageInPlace(std::move(imageForTiled));
 	}
+	_isMonoColorImage = CalculateIsMonoColorImage(image);
 	_pixmap = App::pixmapFromImageInPlace(std::move(image));
 	if (!isSmallForTiled) {
 		_pixmapForTiled = _pixmap;
@@ -671,6 +686,10 @@ bool ChatBackground::tileNight() const {
 	return _tileNightValue;
 }
 
+bool ChatBackground::isMonoColorImage() const {
+	return _isMonoColorImage;
+}
+
 void ChatBackground::ensureStarted() {
 	if (_pixmap.isNull() && !_paper.backgroundColor()) {
 		// We should start first, otherwise the default call

Telegram/SourceFiles/window/themes/window_theme.h

@@ -126,6 +126,7 @@ public:
 	[[nodiscard]] bool tile() const;
 	[[nodiscard]] bool tileDay() const;
 	[[nodiscard]] bool tileNight() const;
+	[[nodiscard]] bool isMonoColorImage() const;
 
 private:
 	struct AdjustableColor {
@@ -174,6 +175,8 @@ private:
 	bool _tileDayValue = false;
 	bool _tileNightValue = true;
 
+	bool _isMonoColorImage = false;
+
 	QString _themeAbsolutePath;
 	QImage _themeImage;
 	bool _themeTile = false;

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -331,7 +331,14 @@ void MainMenu::paintEvent(QPaintEvent *e) {
 	const auto cover = QRect(0, 0, width(), st::mainMenuCoverHeight)
 		.intersected(e->rect());
 
-	if (!_background.isNull()) {
+	const auto background = Window::Theme::Background();
+	const auto isFill = background->tile()
+		|| background->colorForFill().has_value()
+		|| background->isMonoColorImage()
+		|| background->paper().isPattern()
+		|| Data::IsLegacy1DefaultWallPaper(background->paper());
+
+	if (!isFill && !_background.isNull()) {
 		PainterHighQualityEnabler hq(p);
 		p.drawImage(0, 0, _background);
 	}
@@ -340,6 +347,10 @@ void MainMenu::paintEvent(QPaintEvent *e) {
 		const auto widthText = _cloudButton
 			? _cloudButton->x() - st::mainMenuCloudSize
 			: width() - 2 * st::mainMenuCoverTextLeft;
+
+		if (isFill) {
+			p.fillRect(cover, st::mainMenuCoverBg);
+		}
 		p.setPen(st::mainMenuCoverFg);
 		p.setFont(st::semiboldFont);
 		Auth().user()->nameText.drawLeftElided(
@@ -357,8 +368,8 @@ void MainMenu::paintEvent(QPaintEvent *e) {
 				_cloudButton->y() + (_cloudButton->height() - st::mainMenuCloudSize) / 2,
 				width(),
 				st::mainMenuCloudSize,
-				st::msgServiceBg,
+				isFill ? st::mainMenuCloudBg : st::msgServiceBg,
-				st::mainMenuCloudFg);
+				isFill ? st::mainMenuCloudFg : st::msgServiceFg);
 		}
 	}
 	auto other = QRect(0, st::mainMenuCoverHeight, width(), height() - st::mainMenuCoverHeight).intersected(clip);