Reuse lib_ui's title control side deduction code

Telegram/SourceFiles/media/view/media_view_pip.cpp

@@ -26,6 +26,7 @@ For license and copyright information please follow this link:
 #include "base/power_save_blocker.h"
 #include "base/event_filter.h"
 #include "ui/platform/ui_platform_utility.h"
+#include "ui/platform/ui_platform_window_title.h"
 #include "ui/widgets/buttons.h"
 #include "ui/wrap/fade_wrap.h"
 #include "ui/widgets/shadow.h"
@@ -48,14 +49,6 @@ namespace {
 constexpr auto kPipLoaderPriority = 2;
 constexpr auto kMsInSecond = 1000;
 
-[[nodiscard]] bool IsWindowControlsOnLeft() {
-	using Control = Ui::Platform::TitleControls::Control;
-	const auto controlsLayout = Ui::Platform::TitleControlsLayout();
-	return ranges::contains(controlsLayout.left, Control::Close)
-		|| (controlsLayout.left.size() > controlsLayout.right.size()
-			&& !ranges::contains(controlsLayout.right, Control::Close));
-}
-
 [[nodiscard]] QRect ScreenFromPosition(QPoint point) {
 	const auto screen = QGuiApplication::screenAt(point);
 	const auto use = screen ? screen : QGuiApplication::primaryScreen();
@@ -1265,7 +1258,7 @@ void Pip::setupButtons() {
 			rect.y(),
 			volumeToggleWidth,
 			volumeToggleHeight);
-		if (!IsWindowControlsOnLeft()) {
+		if (!Ui::Platform::TitleControlsOnLeft()) {
 			_close.area.moveLeft(rect.x()
 				+ rect.width()
 				- (_close.area.x() - rect.x())

Telegram/SourceFiles/platform/platform_overlay_widget.cpp

@@ -9,7 +9,6 @@ For license and copyright information please follow this link:
 
 #include "ui/effects/animations.h"
 #include "ui/platform/ui_platform_window_title.h"
-#include "ui/platform/ui_platform_utility.h"
 #include "ui/widgets/rp_window.h"
 #include "ui/abstract_button.h"
 #include "styles/style_media_view.h"
@@ -228,16 +227,7 @@ rpl::producer<bool> DefaultOverlayWidgetHelper::controlsSideRightValue() {
 
 	return TitleControlsLayoutValue(
 	) | rpl::map([=](const TitleControls::Layout &layout) {
-		// See TitleControls::updateControlsPosition.
-		if (ranges::contains(layout.left, TitleControl::Close)) {
-			return false;
-		} else if (ranges::contains(layout.right, TitleControl::Close)) {
-			return true;
-		} else if (layout.left.size() > layout.right.size()) {
-			return false;
-		} else {
-			return true;
-		}
+		return !TitleControlsOnLeft(layout);
 	}) | rpl::distinct_until_changed();
 }