!16 修复切换主题时分配QPalette的内存泄漏

From: @liubuguiii 
Reviewed-by: @tangjie02 
Signed-off-by: @tangjie02

0001-fix-Memory-leak-Fix-the-memory-leak.patch

@@ -0,0 +1,64 @@
+From eae79d3e1836ed1aa31a92e32235f33515e4e584 Mon Sep 17 00:00:00 2001
+From: liuxinhao <liuxinhao@kylinsec.com.cn>
+Date: Tue, 8 Nov 2022 17:41:39 +0800
+Subject: [PATCH] fix(Memory leak): Fix the memory leak
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+修复切换主题时分配QPalette的内存泄漏
+---
+ platformtheme/kiran-theme.cpp | 8 ++++++++
+ style/src/render-helper.cpp   | 3 ++-
+ 2 files changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/platformtheme/kiran-theme.cpp b/platformtheme/kiran-theme.cpp
+index 1955fc4..bf48006 100644
+--- a/platformtheme/kiran-theme.cpp
++++ b/platformtheme/kiran-theme.cpp
+@@ -335,6 +335,7 @@ void KiranTheme::handleThemeChanged()
+ {
+     // NOTE: SchemeLoader会接收KiranAppearanceMonitor的GTK主题改变信号，重新加载配色方案
+     // 此处只需等到下一个事件循环，通知QGuiApplication重新更新palette
++    
+     // clang-format off
+     QTimer::singleShot(0, [this] {
+         // 此事件会促使QGuiApplication重新从QPlatformTheme中获取系统级别的QPalette
+@@ -356,8 +357,15 @@ void KiranTheme::handleThemeChanged()
+         ///FIXME:
+         ///1.后续看是否有更好的方式能应用更新系统级别QPalette
+         ///2.加入判断是否外部自定义设置Application palette，若外部自定义设置了，则应不做处理
++
++        QPalette* oldPalette = nullptr;
++        oldPalette = QGuiApplicationPrivate::app_pal;
++
+         QGuiApplicationPrivate::app_pal = new QPalette(*palette(SystemPalette));
+ 
++        if( oldPalette )
++            delete oldPalette;
++
+         // 该接口原本用于windows通知窗口主题变化时使用,现用来通知调用QGuiApplicationPrivate::notifyThemeChanged
+         QGuiApplicationPrivate::processThemeChanged(&event);
+         emit qApp->paletteChanged(*palette(SystemPalette));
+diff --git a/style/src/render-helper.cpp b/style/src/render-helper.cpp
+index 60f66e3..1a48998 100644
+--- a/style/src/render-helper.cpp
++++ b/style/src/render-helper.cpp
+@@ -313,6 +313,7 @@ QPixmap RenderHelper::changeSVGFillColor(const QString &svgFile, const QColor &f
+     tinyDoc->draw(&tempPainter);
+     tempPainter.end();
+ 
++    delete tinyDoc;
+     return tempPixmap;
+ }
+ 
+@@ -381,4 +382,4 @@ void RenderHelper::renderTabBarTab(QPainter *painter,
+     painter->drawPath(painterPath);
+ }
+ 
+-}  // namespace Kiran
+\ No newline at end of file
++}  // namespace Kiran
+-- 
+2.33.0
+

kiran-qt5-integration.spec

@@ -1,10 +1,11 @@
 Name: 		kiran-qt5-integration
 Version:	2.4.0
-Release:	1
+Release:	2
 Summary:	Kiran desktop platform integration plugin.
 
 License:	MulanPSL-2.0
 Source0:	%{name}-%{version}.tar.gz
+Patch0001:	0001-fix-Memory-leak-Fix-the-memory-leak.patch
 
 BuildRequires:	cmake >= 3.2
 BuildRequires:  gcc-c++
@@ -60,6 +61,9 @@ make %{?_smp_mflags}
 %{_libdir}/pkgconfig/kiran-style-helper.pc
 
 %changelog
+* Fri Nov 25 2022 liuxinhao <liuxinhao@kylinsec.com.cn> - 2.4.0-2
+- KYOS-F:Fix the memory leak of change theme
+
 * Mon Oct 31 2022 liuxinhao <liuxinhao@kylinsec.com.cn> - 2.4.0-1
 - KYOS-F: Modify the color table and add new color types, and support the 2.4 color block design of the control center