!40 add windowRadiu and Transparency UI

Merge pull request !40 from likehomedream/my-devel

kylin-theme-builder.pro

@@ -1,4 +1,4 @@
-QT       += core gui svg
+QT       += core gui svg KWindowSystem
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 

resource/config/theme.conf

@@ -35,3 +35,4 @@ transparencyBlur=65
 transparencyNoBlur=90
 supportAnimation=true
 animationDuration=150
+windowRadius=6

src/fileProcess/bridge.cpp

@@ -42,6 +42,16 @@ void Bridge::exteriorChanged(QColor accentcolor)
 
 }
 
+void Bridge::transparencyChanged(int transparency)
+{
+    m_configfilemanager->modifyTransparencyConf(transparency);
+}
+
+void Bridge::windowRadiusChanged(int windowradius)
+{
+    m_configfilemanager->modifywindowRadiusConf(windowradius);
+}
+
 void Bridge::appIconsMapChanged(QMap<QString, QString> *appiconsmaps)
 {
     QMap<QString, QString>::const_iterator it;

src/fileProcess/bridge.h

@@ -20,10 +20,13 @@ public:
     void radiusChanged(int radius);
     void accentColorChanged(QColor accentcolor);
     void exteriorChanged(QColor accentcolor);
+    void transparencyChanged(int transparency);
+    void windowRadiusChanged(int windowradius);
     void appIconsMapChanged(QMap<QString, QString> *appiconsmaps);
     void systemIconsMapChanged(QMap<QString, QString> *systemiconsmaps);
     void cursorMapChanged(QMap<QString, QString> *cursormap);
     void timeCursorMapChanged(QMap<QString, QString> *timecursormap);
+
     void startCopy();
     void updateIconCache(QMap<QString, QString> *appiconsmaps,QString icontype);
 signals:

src/fileProcess/configfilemanager.cpp

@@ -177,6 +177,65 @@ bool ConfigFileManager::modifyWallPaperConf(QString wallpaperpath)
     }
 }
 
+bool ConfigFileManager::modifyTransparencyConf(int transparency)
+{
+    // 读取文件内容
+    QFile file(confFilePath);
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "无法打开文件：" << confFilePath;
+        return false;
+    }
+
+    QTextStream in(&file);
+    QString content = in.readAll();
+    file.close();
+
+    // 修改内容
+    QString oldValue = "transparencyBlur=";
+    QString newValue = QString("transparencyBlur=%1").arg(transparency);
+    content.replace(QRegExp(oldValue + "\\d+"), newValue);
+
+    // 写入文件
+    if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+        QTextStream out(&file);
+        out << content;
+        file.close();
+        emit updateInfo();
+        return true;
+    } else {
+        qDebug() << "无法写入文件：" << confFilePath;
+        return false;
+    }
+}
+
+bool ConfigFileManager::modifywindowRadiusConf(int windowradius)
+{
+    QFile file(confFilePath);
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "Failed to open file: " << confFilePath;
+        return false;
+    }
+
+    QTextStream in(&file);
+    QString content = in.readAll();
+    file.close();
+
+    QString oldValue = "windowRadius=";
+    QString newValue = QString("windowRadius=%1").arg(windowradius);
+    content.replace(QRegExp(oldValue + "\\d+"), newValue);
+    qDebug()<<content;
+    if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+        QTextStream out(&file);
+        out << content;
+        file.close();
+        emit updateInfo();
+        return true;
+    } else {
+        qDebug() << "Failed to write file: " << confFilePath;
+        return false;
+    }
+}
+
 bool ConfigFileManager::copyFileContent(const QString &sourceFilePath, const QString &destinationFilePath)
 {
     QFile sourceFile(sourceFilePath);

src/fileProcess/configfilemanager.h

@@ -23,8 +23,8 @@ public:
 
     bool modifyAccentColorConf(QColor accentcolor);
     bool modifyWallPaperConf(QString wallpaperpath);
-
-
+    bool modifyTransparencyConf(int transparency);
+    bool modifywindowRadiusConf(int windowradius);
     bool copyFileContent(const QString& sourceFilePath, const QString& destinationFilePath);
     bool copyIcontoCacheDir(QMap<QString, QString> *map,QDir cachedir);
 

src/fileProcess/historyinfoload.cpp

@@ -13,6 +13,8 @@ HistoryInfoLoad::HistoryInfoLoad(const QString &date, QObject *parent)
     getWallpaper();
     getAccentColor();
     getRadius();
+    getTransparency();
+    getWindowRadius();
 }
 
 QString HistoryInfoLoad::getCover()
@@ -154,7 +156,6 @@ void HistoryInfoLoad::getAccentColor()
     QString content = in.readAll();
     file.close();
 
-    // 查找 wallPaperPath= 所在行的位置
     int startIndex = content.indexOf("accent=");
     if (startIndex != -1) {
         int lineStartIndex = content.lastIndexOf('\n', startIndex) + 1;
@@ -171,9 +172,81 @@ void HistoryInfoLoad::getAccentColor()
     }
 }
 
+void HistoryInfoLoad::getTransparency()
+{
+    QString filePath = m_historyInfo.filepath + "/src/config/theme.conf";
+    // 读取文件内容
+    QFile file(filePath);
+    if (!file.open(QIODevice::ReadWrite | QIODevice::Text)) {
+        qDebug() << "无法打开文件：" << filePath;
+        return;
+    }
+
+    QTextStream in(&file);
+    QString content = in.readAll();
+    file.close();
+
+    int startIndex = content.indexOf("transparencyBlur=");
+    if (startIndex != -1) {
+        int lineStartIndex = content.lastIndexOf('\n', startIndex) + 1;
+        int lineEndIndex = content.indexOf('\n', startIndex);
+
+        if (lineEndIndex == -1) {
+            lineEndIndex = content.size();
+        }
+
+        QString lineContent = content.mid(lineStartIndex, lineEndIndex - lineStartIndex).trimmed();
+        lineContent.remove("transparencyBlur=");
+
+        bool conversionSuccess = false;
+        int transparencyBlurValue = lineContent.toInt(&conversionSuccess);
+        if (conversionSuccess) {
+            m_historyInfo.transparency = transparencyBlurValue;
+        } else {
+            qDebug() << "无法将字符串转换为整数：" << lineContent;
+        }
+    }
+}
+
+void HistoryInfoLoad::getWindowRadius()
+{
+    QString filePath = m_historyInfo.filepath + "/src/config/theme.conf";
+    QFile file(filePath);
+    if (!file.open(QIODevice::ReadWrite | QIODevice::Text)) {
+        qDebug() << "无法打开文件：" << filePath;
+        return;
+    }
+
+    QTextStream in(&file);
+    QString content = in.readAll();
+    file.close();
+
+    int startIndex = content.indexOf("windowRadius=");
+    if (startIndex != -1) {
+        int lineStartIndex = content.lastIndexOf('\n', startIndex) + 1;
+        int lineEndIndex = content.indexOf('\n', startIndex);
+
+        if (lineEndIndex == -1) {
+            lineEndIndex = content.size();
+        }
+
+        QString lineContent = content.mid(lineStartIndex, lineEndIndex - lineStartIndex).trimmed();
+        lineContent.remove("windowRadius=");
+
+        bool conversionSuccess = false;
+        int windowRadiusValue = lineContent.toInt(&conversionSuccess);
+        if (conversionSuccess) {
+            m_historyInfo.windowradius = windowRadiusValue;
+            qDebug() << "m_historyInfo.windowradius" << windowRadiusValue;
+        } else {
+            qDebug() << "无法将字符串转换为整数：" << lineContent;
+        }
+    }
+}
+
 HistoryInfo HistoryInfoLoad::getInfoData()
 {
-    qDebug()<<m_historyInfo.accentcolor<<m_historyInfo.wallpaperpath<<m_historyInfo.filepath;
+    qDebug()<<m_historyInfo.accentcolor<<m_historyInfo.wallpaperpath<<m_historyInfo.filepath<<m_historyInfo.windowradius<<"+++++++++++++++++++++++++++++++++++++++++";
     return m_historyInfo;
 }
 
@@ -185,5 +258,7 @@ void HistoryInfoLoad::updateHistoryInfo()
     getRadius();
     getWallpaper();
     getAccentColor();
+    getTransparency();
+    getWindowRadius();
 }
 

src/fileProcess/historyinfoload.h

@@ -15,6 +15,8 @@ struct HistoryInfo {
     QString wallpaperpath = "";
     QString accentcolor = "";
     int radius = 6;
+    int transparency = 65;
+    int windowradius = 6;
 };
 
 Q_DECLARE_METATYPE(HistoryInfo)
@@ -30,6 +32,8 @@ public:
     void getRadius();
     void getWallpaper();
     void getAccentColor();
+    void getTransparency();
+    void getWindowRadius();
     HistoryInfo getInfoData();
     void updateHistoryInfo();
 signals:

src/maininterface.cpp

@@ -29,6 +29,12 @@ MainInterface::MainInterface(QWidget *parent) : QWidget(parent)
     connect(m_globalthemewidget, &GlobalThemeWidget::newExterior, this, [&](const QColor selectedColor) {
         emit exteriorChanged(selectedColor);
     });
+    connect(m_globalthemewidget, &GlobalThemeWidget::newTransparency, this, [&](const int transparency) {
+        emit transparencyChanged(transparency);
+    });
+    connect(m_globalthemewidget, &GlobalThemeWidget::newWindowRadius, this, [&](const int windowFilletSize) {
+        emit windowRadiusChanged(windowFilletSize);
+    });
     connect(m_iconthemewidget, &IconThemeWidget::newAppIconsMap, this, [&]( QMap<QString, QString> *appiconsmaps) {
         emit appIconsMapChanged(appiconsmaps);
     });

src/maininterface.h

@@ -47,6 +47,8 @@ signals:
     void wallpaperPathChanged(QString path);
     void coverPathChanged(QString path);
     void radiusChanged(int radius);
+    void transparencyChanged(int transparency);
+    void windowRadiusChanged(int windowRadius);
     void accentColorChanged(QColor accentcolor);
     void exteriorChanged(QColor exteriorcolor);
     void appIconsMapChanged(QMap<QString, QString> *appiconsmap);

src/mainwindow.cpp

@@ -24,6 +24,8 @@ MainWindow::MainWindow(QWidget *parent)
     connect(m_maininterface, &MainInterface::radiusChanged, m_bridge, &Bridge::radiusChanged);
     connect(m_maininterface, &MainInterface::accentColorChanged, m_bridge, &Bridge::accentColorChanged);
     connect(m_maininterface, &MainInterface::exteriorChanged, m_bridge, &Bridge::exteriorChanged);
+    connect(m_maininterface, &MainInterface::transparencyChanged, m_bridge, &Bridge::transparencyChanged);
+    connect(m_maininterface, &MainInterface::windowRadiusChanged, m_bridge, &Bridge::windowRadiusChanged);
 //    connect(m_maininterface, &MainInterface::appIconsMapChanged, this,[=]{
 //        m_bridge->updateIconCache(m_maininterface->getAppIconsMap(),"appicon");
 //    });
@@ -31,7 +33,7 @@ MainWindow::MainWindow(QWidget *parent)
     connect(m_maininterface, &MainInterface::systemIconsMapChanged, m_bridge, &Bridge::systemIconsMapChanged);
     connect(m_maininterface, &MainInterface::cursorMapChanged, m_bridge, &Bridge::cursorMapChanged);
     connect(m_maininterface, &MainInterface::timeCursorMapChanged, m_bridge, &Bridge::timeCursorMapChanged);
-    connect(m_maininterface, &MainInterface::startCopy, m_bridge, &Bridge::startCopy);
+//    connect(m_maininterface, &MainInterface::startCopy, m_bridge, &Bridge::startCopy);
     connect(m_bridge,&Bridge::updateInfo,m_historywidget,&HistoryWidget::updateInfo);
 }
 
@@ -200,10 +202,12 @@ void MainWindow::onGoHomeClicked()
         m_cacheConfirmedWidget->show();
         connect(m_cacheConfirmedWidget, &cacheConfirmedWidget::cacheClean, this, [=](){
             m_stackedWidget->setCurrentIndex(0);
+            //添加一个reflesh功能，清除所有界面上的改动
         });
         connect(m_cacheConfirmedWidget, &cacheConfirmedWidget::cacheSave, this, [=](){
             m_historywidget->updateHistoryDir();
             m_stackedWidget->setCurrentIndex(0);
+            //添加一个reflesh功能，清除所有界面上的改动
         });
     } else {
         m_stackedWidget->setCurrentIndex(0);

src/module/cursorthemewidget.cpp

@@ -17,6 +17,11 @@ void CursorThemeWidget::initPreviewWidget()
 {
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(495,620);
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
     m_preview = new CursorImageWidget(m_previewwidget,m_iconpathmap);
     m_preview2 = new CursorImageWidget(m_previewwidget,m_timeiconpathmap);
     m_previewlayout = new QVBoxLayout(m_previewwidget);

src/module/globalthemefeature.cpp

@@ -1,6 +1,10 @@
-#include "globalthemefeature.h"
+#include "globalthemefeature.h"
 #include "globalthemewidget.h"
 #include <QGraphicsDropShadowEffect>
+#include <KWindowEffects>
+#include <QPainterPath>
+#include <QGraphicsBlurEffect>
+
 CustomGraphicsView::CustomGraphicsView(QGraphicsScene* scene) : QGraphicsView(scene) {
     setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
     setDragMode(QGraphicsView::ScrollHandDrag);
@@ -85,6 +89,17 @@ void GlobalImageWidget::updatescale()
     graphicsView->scale(1, 1);
 }
 
+void GlobalImageWidget::updateControlRadius(int Value)
+{
+    m_showbtn->setRadius(Value);
+}
+
+void GlobalImageWidget::updateTransparency(int transparency)
+{
+    m_showwidget->setTransparency(transparency);
+    m_showwidget->update();
+}
+
 GlobalImageWidget::GlobalImageWidget(QWidget *parent, const QString& coverFilePath)
     : QWidget(parent), m_coverFilePath(coverFilePath) {
 
@@ -131,7 +146,7 @@ GlobalImageWidget::GlobalImageWidget(QWidget *parent, const QString& coverFilePa
     m_showwidget->setPalette(widgetpalette);
 
     QHBoxLayout *buttonlayout = new QHBoxLayout();
-    m_showbtn = new QPushButton(m_showwidget);
+    m_showbtn = new RoundedButton(m_showwidget);
     m_showbtn->setFixedWidth(120);
     m_showbtn->setParent(m_showwidget);
 
@@ -155,6 +170,10 @@ GlobalImageWidget::GlobalImageWidget(QWidget *parent, const QString& coverFilePa
     // 设置初始缩放倍数为0.9倍
     qreal initialScale = 0.9;
     graphicsView->scale(initialScale, initialScale);
+
+//    QGraphicsBlurEffect* blurEffect = new QGraphicsBlurEffect(this);
+//    blurEffect->setBlurRadius(1);
+//    m_showwidget->setGraphicsEffect(blurEffect);
 }
 
 Globalthemefeature::Globalthemefeature(QWidget *parent, const QString& coverFilePath)
@@ -167,6 +186,8 @@ RoundedWidget::RoundedWidget(QWidget *parent)
 {
     setAttribute(Qt::WA_TranslucentBackground);
     setRadius(6);
+    setTransparency(65);
+
 }
 
 void RoundedWidget::setRadius(int radius)
@@ -174,6 +195,13 @@ void RoundedWidget::setRadius(int radius)
     m_radius = radius;
 }
 
+void RoundedWidget::setTransparency(int transparency)
+{
+    m_transparency = transparency / 100.0;
+    qDebug()<<m_transparency;
+    update();
+}
+
 void RoundedWidget::setBackgroundColor(const QColor &color)
 {
     backgroundColor = color;
@@ -188,7 +216,8 @@ void RoundedWidget::paintEvent(QPaintEvent *event)
 
     QRectF rect = contentsRect().adjusted(borderWidth, borderWidth, -borderWidth, -borderWidth);
     int r = std::min(rect.width(), rect.height()) / 2;  // 计算圆角半径
-    int actualRadius = std::min(m_radius, r);             // 取实际圆角半径和计算半径的较小值
+    int actualRadius = std::min(m_radius, r);            // 取实际圆角半径和计算半径的较小值
+    backgroundColor.setAlphaF(m_transparency);
 
     // 绘制背景
     painter.setPen(Qt::NoPen);
@@ -201,3 +230,32 @@ void RoundedWidget::paintEvent(QPaintEvent *event)
 //    painter.drawRoundedRect(rect, actualRadius, actualRadius);
 
 }
+
+RoundedButton::RoundedButton(QWidget *parent): QPushButton(parent)
+{
+    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+    setFixedHeight(40);
+    setFlat(true);
+    setFocusPolicy(Qt::NoFocus);
+}
+
+void RoundedButton::setRadius(int radius)
+{
+    m_radius = radius;
+    update();
+}
+
+void RoundedButton::paintEvent(QPaintEvent *event) {
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    // 绘制圆角矩形背景
+    QRectF rect(0, 0, width(), height());
+    QBrush backgroundBrush(palette().color(QPalette::Button));
+    painter.setBrush(backgroundBrush);
+    painter.setPen(Qt::NoPen);
+    painter.drawRoundedRect(rect, m_radius, m_radius);
+
+    // 使用按钮原本的样式绘制文本和图标
+    QPushButton::paintEvent(event);
+}

src/module/globalthemefeature.h

@@ -22,6 +22,7 @@ public:
     RoundedWidget(QWidget *parent = nullptr);
 
     void setRadius(int radius);
+    void setTransparency(int transparency);
     void setBackgroundColor(const QColor& color);
 
 protected:
@@ -29,11 +30,25 @@ protected:
 
 private:
     int m_radius;
+    double m_transparency;
     QColor backgroundColor = Qt::white;    // 背景颜色
     QColor borderColor = Qt::white;        // 边框颜色
     int borderWidth = 1;                    // 边框宽度
 };
 
+class RoundedButton : public QPushButton {
+public:
+    RoundedButton(QWidget *parent = nullptr);
+
+    void setRadius(int radius);
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+
+private:
+    int m_radius;
+};
+
 class CustomGraphicsView : public QGraphicsView {
 public:
     explicit CustomGraphicsView(QGraphicsScene* scene);
@@ -51,11 +66,13 @@ public:
     void update(const QString& coverFilePath);
     void updateOverlayImage(const QString& overlayImagePath);
     void updatescale();
+    void updateControlRadius(int Value);
+    void updateTransparency(int transparency);
 private:
     CustomGraphicsView* graphicsView;
     QString m_coverFilePath;
     RoundedWidget *m_showwidget;
-    QPushButton *m_showbtn;
+    RoundedButton *m_showbtn;
     QGraphicsScene* m_scene;
     QPixmap m_mergedImage;
     QPixmap m_image;

src/module/globalthemewidget.cpp

@@ -24,6 +24,8 @@ void GlobalThemeWidget::eidtInitWidget(const HistoryInfo &InfoData)
     this->setAccentColor(m_info.accentcolor);
     this->setCover(m_info.coverpath);
     this->setWallpaper(m_info.wallpaperpath);
+    this->setTransparency(m_info.transparency);
+    this->setWindowRadius(m_info.windowradius);
 //    this->update();
 }
 
@@ -32,7 +34,11 @@ void GlobalThemeWidget::initPreviewWidget()
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(495,620);
 
-    m_previewwidget->setBackgroundRole(QPalette::Window);
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
 
     m_preview = new GlobalImageWidget(m_previewwidget,m_wallpaperpath);
 
@@ -249,8 +255,9 @@ void GlobalThemeWidget::initFilletWidget()
 
     QObject::connect(m_filletslider, &QSlider::valueChanged, [=](int value) {
         showButton->setText(QString::number(value)+"px");
-        m_preview->updatescale();
-        m_preview->updateWidgetRadius(value);
+
+        m_preview->updateControlRadius(value);
+
         emit newRadius(value);
     });
 
@@ -321,6 +328,8 @@ void GlobalThemeWidget::initTransparencyWidget()
     showButton->setText(QString::number(m_transparencyslider->value())+"%");
     QObject::connect(m_transparencyslider, &QSlider::valueChanged, [=](int value) {
         showButton->setText(QString::number(value)+"%");
+        newTransparency(value);
+        m_preview->updateTransparency(value);
     });
     layout->addWidget(title);
     layout->addWidget(m_transparencyslider);
@@ -337,10 +346,18 @@ void GlobalThemeWidget::initWindowFilletWidget()
     QLabel *title = new QLabel(tr("Window fillet"));
 
     m_filletcombobox = new QComboBox(m_windowfilletwidget);
-    m_filletcombobox->addItem(tr("Large"),QColor(55, 144, 250));
-    m_filletcombobox->addItem(tr("Medium"), QColor(120, 115, 245));
-    m_filletcombobox->addItem(tr("Small"), QColor(120, 115, 245));
+    m_filletcombobox->addItem(tr("Large"), int(12));
+    m_filletcombobox->addItem(tr("Medium"), int(6));
+    m_filletcombobox->addItem(tr("Small"), int(0));
+    m_filletcombobox->setCurrentIndex(1);
+    connect(m_filletcombobox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [=](int index){
 
+        int selectedSize = m_filletcombobox->itemData(index).value<int>();
+        m_preview->updatescale();
+        m_preview->updateWidgetRadius(selectedSize);
+
+        emit newWindowRadius(selectedSize);
+    });
     layout->addWidget(title);
     layout->addWidget(m_filletcombobox);
     m_windowfilletwidget->setLayout(layout);
@@ -392,6 +409,11 @@ void GlobalThemeWidget::setAccentColor(QString accentcolor)
     }
 }
 
+void GlobalThemeWidget::setTransparency(int transparency)
+{
+    m_transparencyslider->setValue(transparency);
+}
+
 void GlobalThemeWidget::setCover(QString coverpath)
 {
     m_coverbtn->setIcon(QIcon(coverpath));
@@ -401,3 +423,16 @@ void GlobalThemeWidget::setWallpaper(QString wallpaperpath)
 {
     wallpaperbtn->setIcon(QIcon(wallpaperpath));
 }
+
+void GlobalThemeWidget::setWindowRadius(int windowradius)
+{
+    QMap<int, int> radiusIndexMap;
+    radiusIndexMap.insert(0, 2);
+    radiusIndexMap.insert(6, 1);
+    radiusIndexMap.insert(12, 0);
+
+    if (radiusIndexMap.contains(windowradius)) {
+        int index = radiusIndexMap.value(windowradius);
+        m_filletcombobox->setCurrentIndex(index);
+    }
+}

src/module/globalthemewidget.h

@@ -30,6 +30,8 @@ signals:
     void newRadius(const int radius);
     void newAccentColor(const QColor selectedColor);
     void newExterior(const QColor selectedColor);
+    void newTransparency(const int transparency);
+    void newWindowRadius(const int radius);
 private:
     void initPreviewWidget();
     void initRightWidget();
@@ -46,8 +48,10 @@ private:
 
     void setRadiusSetting(int radius);
     void setAccentColor(QString accentcolor);
+    void setTransparency(int transparency);
     void setCover(QString coverpath);
     void setWallpaper(QString wallpaperpath);
+    void setWindowRadius(int windowradius);
     QWidget *m_globalthemewidget;
     QWidget *m_coverwidget;
     QWidget *m_wallpaperwidget;

src/module/grubthemewidget.cpp

@@ -17,6 +17,12 @@ void GrubThemeWidget::initPreviewWidget()
 
     m_previewwidget->setBackgroundRole(QPalette::Window);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_preview = new GrubImageWidget(m_previewwidget);
 
     m_previewlayout = new QVBoxLayout(m_previewwidget);

src/module/iconthemewidget.cpp

@@ -19,6 +19,12 @@ void IconThemeWidget::initPreviewWidget()
     m_previewwidget = new QWidget(this);
     m_previewwidget->setMinimumSize(550,620);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_previewstack = new QStackedWidget(m_previewwidget);
 
     m_preview = new ImageWidget(m_previewwidget,m_iconpathmap);

src/module/plymouththemewidget.cpp

@@ -18,6 +18,12 @@ void PlymouthThemeWidget::initPreviewWidget()
 
     m_previewwidget->setBackgroundRole(QPalette::Window);
 
+    QPalette palette;
+    QColor bgColor("#F5F5F5");
+    palette.setColor(QPalette::Window, bgColor);
+    m_previewwidget->setPalette(palette);
+    m_previewwidget->setAutoFillBackground(true);
+
     m_preview = new PlymouthImageWidget(m_previewwidget);
 
     m_previewlayout = new QVBoxLayout(m_previewwidget);