feat: option to use light checkerboard by default

app/graphicsview.cpp

@@ -5,6 +5,7 @@
 #include "graphicsview.h"
 
 #include "graphicsscene.h"
+#include "settings.h"
 
 #include <QDebug>
 #include <QMouseEvent>
@@ -338,16 +339,16 @@ bool GraphicsView::shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) con
 void GraphicsView::setCheckerboardEnabled(bool enabled, bool invertColor)
 {
     m_checkerboardEnabled = enabled;
-    m_isLastCheckerboardColorInverted = invertColor;
+    bool isLightCheckerboard = Settings::instance()->useLightCheckerboard() ^ invertColor;
     if (m_checkerboardEnabled) {
         // Prepare background check-board pattern
         QPixmap tilePixmap(0x20, 0x20);
-        tilePixmap.fill(invertColor ? QColor(220, 220, 220, 170) : QColor(35, 35, 35, 170));
+        tilePixmap.fill(isLightCheckerboard ? QColor(220, 220, 220, 170) : QColor(35, 35, 35, 170));
         QPainter tilePainter(&tilePixmap);
         constexpr QColor color(45, 45, 45, 170);
         constexpr QColor invertedColor(210, 210, 210, 170);
-        tilePainter.fillRect(0, 0, 0x10, 0x10, invertColor ? invertedColor : color);
+        tilePainter.fillRect(0, 0, 0x10, 0x10, isLightCheckerboard ? invertedColor : color);
-        tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, invertColor ? invertedColor : color);
+        tilePainter.fillRect(0x10, 0x10, 0x10, 0x10, isLightCheckerboard ? invertedColor : color);
         tilePainter.end();
 
         setBackgroundBrush(tilePixmap);

app/graphicsview.h

@@ -70,7 +70,7 @@ private:
     bool m_enableFitInView = false;
     bool m_avoidResetTransform = false;
     bool m_checkerboardEnabled = false;
-    bool m_isLastCheckerboardColorInverted = false;
+    bool m_useLightCheckerboard = false;
 };
 
 #endif // GRAPHICSVIEW_H

app/settings.cpp

@@ -47,6 +47,11 @@ bool Settings::stayOnTop()
     return m_qsettings->value("stay_on_top", true).toBool();
 }
 
+bool Settings::useLightCheckerboard()
+{
+    return m_qsettings->value("use_light_checkerboard", false).toBool();
+}
+
 Settings::DoubleClickBehavior Settings::doubleClickBehavior() const
 {
     QString result = m_qsettings->value("double_click_behavior", "Close").toString();
@@ -81,6 +86,12 @@ void Settings::setStayOnTop(bool on)
     m_qsettings->sync();
 }
 
+void Settings::setUseLightCheckerboard(bool light)
+{
+    m_qsettings->setValue("use_light_checkerboard", light);
+    m_qsettings->sync();
+}
+
 void Settings::setDoubleClickBehavior(DoubleClickBehavior dcb)
 {
     m_qsettings->setValue("double_click_behavior", QEnumHelper::toString(dcb));

app/settings.h

@@ -33,12 +33,14 @@ public:
     static Settings *instance();
 
     bool stayOnTop();
+    bool useLightCheckerboard();
     DoubleClickBehavior doubleClickBehavior() const;
     MouseWheelBehavior mouseWheelBehavior() const;
     WindowSizeBehavior initWindowSizeBehavior() const;
     Qt::HighDpiScaleFactorRoundingPolicy hiDpiScaleFactorBehavior() const;
 
     void setStayOnTop(bool on);
+    void setUseLightCheckerboard(bool light);
     void setDoubleClickBehavior(DoubleClickBehavior dcb);
     void setMouseWheelBehavior(MouseWheelBehavior mwb);
     void setInitWindowSizeBehavior(WindowSizeBehavior wsb);

app/settingsdialog.cpp

@@ -14,6 +14,7 @@
 SettingsDialog::SettingsDialog(QWidget *parent)
     : QDialog(parent)
     , m_stayOnTop(new QCheckBox)
+    , m_useLightCheckerboard(new QCheckBox)
     , m_doubleClickBehavior(new QComboBox)
     , m_mouseWheelBehavior(new QComboBox)
     , m_initWindowSizeBehavior(new QComboBox)
@@ -67,12 +68,14 @@ SettingsDialog::SettingsDialog(QWidget *parent)
     }
 
     settingsForm->addRow(tr("Stay on top when start-up"), m_stayOnTop);
+    settingsForm->addRow(tr("Use light-color checkerboard"), m_useLightCheckerboard);
     settingsForm->addRow(tr("Double-click behavior"), m_doubleClickBehavior);
     settingsForm->addRow(tr("Mouse wheel behavior"), m_mouseWheelBehavior);
     settingsForm->addRow(tr("Default window size"), m_initWindowSizeBehavior);
     settingsForm->addRow(tr("HiDPI scale factor rounding policy"), m_hiDpiRoundingPolicyBehavior);
 
     m_stayOnTop->setChecked(Settings::instance()->stayOnTop());
+    m_useLightCheckerboard->setChecked(Settings::instance()->useLightCheckerboard());
     m_doubleClickBehavior->setModel(new QStringListModel(dcbDropDown));
     Settings::DoubleClickBehavior dcb = Settings::instance()->doubleClickBehavior();
     m_doubleClickBehavior->setCurrentIndex(static_cast<int>(dcb));
@@ -95,6 +98,10 @@ SettingsDialog::SettingsDialog(QWidget *parent)
         Settings::instance()->setStayOnTop(state == Qt::Checked);
     });
 
+    connect(m_useLightCheckerboard, &QCheckBox::stateChanged, this, [ = ](int state){
+        Settings::instance()->setUseLightCheckerboard(state == Qt::Checked);
+    });
+
     connect(m_doubleClickBehavior, QOverload<int>::of(&QComboBox::currentIndexChanged), this, [ = ](int index){
         Settings::instance()->setDoubleClickBehavior(_dc_options.at(index).first);
     });

app/settingsdialog.h

@@ -23,6 +23,7 @@ public slots:
 
 private:
     QCheckBox * m_stayOnTop = nullptr;
+    QCheckBox * m_useLightCheckerboard = nullptr;
     QComboBox * m_doubleClickBehavior = nullptr;
     QComboBox * m_mouseWheelBehavior = nullptr;
     QComboBox * m_initWindowSizeBehavior = nullptr;