Add a small scale for stories siblings.

Telegram/SourceFiles/media/stories/media_stories_sibling.cpp

@@ -32,6 +32,7 @@ constexpr auto kSiblingFade = 0.5;
 constexpr auto kSiblingFadeOver = 0.4;
 constexpr auto kSiblingNameOpacity = 0.8;
 constexpr auto kSiblingNameOpacityOver = 1.;
+constexpr auto kSiblingScaleOver = 0.05;
 
 [[nodiscard]] StoryId LookupShownId(
 		const Data::StoriesSource &source,
@@ -325,6 +326,7 @@ SiblingView Sibling::view(const SiblingLayout &layout, float64 over) {
 		.namePosition = namePosition(layout, name),
 		.nameOpacity = (kSiblingNameOpacity * (1 - over)
 			+ kSiblingNameOpacityOver * over),
+		.scale = 1. + (over * kSiblingScaleOver),
 	};
 }
 

Telegram/SourceFiles/media/stories/media_stories_view.h

@@ -25,6 +25,7 @@ class Controller;
 struct ContentLayout {
 	QRect geometry;
 	float64 fade = 0.;
+	float64 scale = 1.;
 	int radius = 0;
 	bool headerOutside = false;
 };
@@ -39,6 +40,7 @@ struct SiblingView {
 	QImage name;
 	QPoint namePosition;
 	float64 nameOpacity = 0.;
+	float64 scale = 1.;
 
 	[[nodiscard]] bool valid() const {
 		return !image.isNull();

Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp

@@ -488,7 +488,9 @@ void OverlayWidget::RendererGL::paintTransformedContent(
 		not_null<QOpenGLShaderProgram*> program,
 		ContentGeometry geometry,
 		bool fillTransparentBackground) {
-	const auto rect = transformRect(geometry.rect);
+	const auto rect = scaleRect(
+		transformRect(geometry.rect),
+		geometry.scale);
 	const auto centerx = rect.x() + rect.width() / 2;
 	const auto centery = rect.y() + rect.height() / 2;
 	const auto rsin = float(std::sin(geometry.rotation * M_PI / 180.));
@@ -1066,4 +1068,17 @@ Rect OverlayWidget::RendererGL::transformRect(const QRect &raster) const {
 	return TransformRect(Rect(raster), _viewport, _factor);
 }
 
+Rect OverlayWidget::RendererGL::scaleRect(
+		const Rect &unscaled,
+		float64 scale) const {
+	const auto added = scale - 1.;
+	const auto addw = unscaled.width() * added;
+	const auto addh = unscaled.height() * added;
+	return Rect(
+		unscaled.x() - addw / 2,
+		unscaled.y() - addh / 2,
+		unscaled.width() + addw,
+		unscaled.height() + addh);
+}
+
 } // namespace Media::View

Telegram/SourceFiles/media/view/media_view_overlay_opengl.h

@@ -97,6 +97,9 @@ private:
 	[[nodiscard]] Ui::GL::Rect transformRect(const QRectF &raster) const;
 	[[nodiscard]] Ui::GL::Rect transformRect(
 		const Ui::GL::Rect &raster) const;
+	[[nodiscard]] Ui::GL::Rect scaleRect(
+		const Ui::GL::Rect &unscaled,
+		float64 scale) const;
 
 	void uploadTexture(
 		GLint internalformat,

Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp

@@ -1795,11 +1795,13 @@ OverlayWidget::ContentGeometry OverlayWidget::contentGeometry() const {
 }
 
 OverlayWidget::ContentGeometry OverlayWidget::storiesContentGeometry(
-		const Stories::ContentLayout &layout) const {
+		const Stories::ContentLayout &layout,
+		float64 scale) const {
 	return {
 		.rect = QRectF(layout.geometry),
 		.controlsOpacity = kStoriesControlsOpacity,
 		.fade = layout.fade,
+		.scale = scale,
 		.roundRadius = layout.radius,
 		.topShadowShown = !layout.headerOutside,
 	};
@@ -4458,7 +4460,7 @@ void OverlayWidget::paint(not_null<Renderer*> renderer) {
 			const auto paint = [&](const SiblingView &view, int index) {
 				renderer->paintTransformedStaticContent(
 					view.image,
-					storiesContentGeometry(view.layout),
+					storiesContentGeometry(view.layout, view.scale),
 					false, // semi-transparent
 					false, // fill transparent background
 					index);

Telegram/SourceFiles/media/view/media_view_overlay_widget.h

@@ -180,6 +180,7 @@ private:
 
 		// Stories.
 		qreal fade = 0.;
+		qreal scale = 1.;
 		int bottomShadowSkip = 0;
 		int roundRadius = 0;
 		bool topShadowShown = false;
@@ -421,7 +422,8 @@ private:
 	[[nodiscard]] QRect finalContentRect() const;
 	[[nodiscard]] ContentGeometry contentGeometry() const;
 	[[nodiscard]] ContentGeometry storiesContentGeometry(
-		const Stories::ContentLayout &layout) const;
+		const Stories::ContentLayout &layout,
+		float64 scale = 1.) const;
 	void updateContentRect();
 	void contentSizeChanged();