tweaked the light themes

src/colorscheme.cpp

@@ -57,6 +57,8 @@ void ColorScheme::setColors(double hue, double multiplier)
 {
     lightTheme = multiplier > 0;
 
+    qreal sat = 0.05;
+
     SystemMessageColor = QColor(140, 127, 127);
 
     auto getColor = [multiplier](double h, double s, double l, double a = 1.0) {
@@ -97,19 +99,21 @@ void ColorScheme::setColors(double hue, double multiplier)
     TabNewMessageBackground = QBrush(QColor::fromHslF(hue, 0.5, 0.8), Qt::DiagCrossPattern);
 
     // Chat
-    ChatBackground = getColor(0, 0.1, 1);
+    bool flat = lightTheme;
+
+    ChatBackground = getColor(0, sat, 1);
     ChatBackgroundHighlighted = blendColors(TabSelectedBackground, ChatBackground, 0.8);
-    ChatHeaderBackground = getColor(0, 0.1, 0.9);
-    ChatHeaderBorder = getColor(0, 0.1, 0.85);
-    ChatInputBackground = getColor(0, 0.1, 0.95);
-    ChatInputBorder = getColor(0, 0.1, 0.9);
+    ChatHeaderBackground = getColor(0, sat, flat ? 1 : 0.9);
+    ChatHeaderBorder = getColor(0, sat, flat ? 1 : 0.85);
+    ChatInputBackground = getColor(0, sat, flat ? 0.95 : 0.95);
+    ChatInputBorder = getColor(0, sat, flat ? 1 : 1);
     ChatSeperator = lightTheme ? QColor(127, 127, 127) : QColor(80, 80, 80);
 
     // Scrollbar
-    ScrollbarBG = ChatBackground;
-    ScrollbarThumb = getColor(0, 0.1, 0.85);
-    ScrollbarThumbSelected = getColor(0, 0.1, 0.7);
-    ScrollbarArrow = getColor(0, 0.1, 0.9);
+    ScrollbarBG = getColor(0, sat, 0.90);
+    ScrollbarThumb = getColor(0, sat, 0.80);
+    ScrollbarThumbSelected = getColor(0, sat, 0.7);
+    ScrollbarArrow = getColor(0, sat, 0.9);
 
     // stylesheet
     InputStyleSheet = "background:" + ChatInputBackground.name() + ";" +

src/widgets/helper/splitinput.cpp

@@ -22,7 +22,7 @@ SplitInput::SplitInput(Split *_chatWidget)
 
     this->setLayout(&this->hbox);
 
-    this->hbox.setMargin(0);
+    this->hbox.setMargin(4);
 
     this->hbox.addLayout(&this->editContainer);
     this->hbox.addLayout(&this->vbox);
@@ -37,7 +37,7 @@ SplitInput::SplitInput(Split *_chatWidget)
     }));
 
     this->editContainer.addWidget(&this->textInput);
-    this->editContainer.setMargin(4);
+    this->editContainer.setMargin(2);
 
     this->emotesLabel.setMinimumHeight(24);
 
@@ -215,6 +215,8 @@ void SplitInput::refreshTheme()
     this->textLengthLabel.setPalette(palette);
 
     this->textInput.setStyleSheet(this->colorScheme.InputStyleSheet);
+
+    this->hbox.setMargin((this->colorScheme.isLightTheme() ? 4 : 2) * this->getDpiMultiplier());
 }
 
 void SplitInput::editTextChanged()
@@ -243,7 +245,12 @@ void SplitInput::paintEvent(QPaintEvent *)
     QPainter painter(this);
 
     painter.fillRect(this->rect(), this->colorScheme.ChatInputBackground);
-    painter.setPen(this->colorScheme.ChatInputBorder);
+
+    QPen pen(this->colorScheme.ChatInputBorder);
+    if (this->colorScheme.isLightTheme()) {
+        pen.setWidth((int)(6 * this->getDpiMultiplier()));
+    }
+    painter.setPen(pen);
     painter.drawRect(0, 0, this->width() - 1, this->height() - 1);
 }
 
@@ -254,6 +261,8 @@ void SplitInput::resizeEvent(QResizeEvent *)
     } else {
         this->textInput.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     }
+
+    this->refreshTheme();
 }
 
 void SplitInput::mousePressEvent(QMouseEvent *)

src/widgets/scrollbar.cpp

@@ -244,6 +244,11 @@ void ScrollBar::paintEvent(QPaintEvent *)
     this->mutex.unlock();
 }
 
+void ScrollBar::resizeEvent(QResizeEvent *)
+{
+    this->resize((int)(16 * this->getDpiMultiplier()), this->height());
+}
+
 void ScrollBar::mouseMoveEvent(QMouseEvent *event)
 {
     if (this->mouseDownIndex == -1) {

src/widgets/scrollbar.hpp

@@ -52,6 +52,14 @@ public:
 
     void printCurrentState(const QString &prefix = QString()) const;
 
+protected:
+    void paintEvent(QPaintEvent *) override;
+    void resizeEvent(QResizeEvent *) override;
+    void mouseMoveEvent(QMouseEvent *event) override;
+    void mousePressEvent(QMouseEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+    void leaveEvent(QEvent *) override;
+
 private:
     Q_PROPERTY(qreal currentValue READ getCurrentValue WRITE setCurrentValue)
 
@@ -61,19 +69,14 @@ private:
 
     ScrollBarHighlight *highlights;
 
-    void paintEvent(QPaintEvent *);
-    void mouseMoveEvent(QMouseEvent *event);
-    void mousePressEvent(QMouseEvent *event);
-    void mouseReleaseEvent(QMouseEvent *event);
-    void leaveEvent(QEvent *);
-
     bool atBottom = false;
 
     int mouseOverIndex = -1;
     int mouseDownIndex = -1;
     QPoint lastMousePosition;
 
-    int buttonHeight = 16;
+    //    int buttonHeight = 16;
+    int buttonHeight = 0;
     int trackHeight = 100;
 
     QRect thumbRect;