feat: integrate HSLGradientSlider for enhanced color selection in ContrastChecker

Author: keshavbhatt

CMakeLists.txt

@@ -50,6 +50,7 @@ set(SOURCES
     src/BrightnessSliderWidget.cpp
     src/ShortcutsDialog.cpp
     src/ContrastChecker.cpp
+    src/HSLGradientSlider.cpp
 )
 
 # Headers
@@ -69,6 +70,7 @@ set(HEADERS
         include/BrightnessSliderWidget.h
         include/ShortcutsDialog.h
         include/ContrastChecker.h
+        include/HSLGradientSlider.h
 )
 
 # UI files

include/ContrastChecker.h

@@ -6,10 +6,11 @@
 
 class QLineEdit;
 class QLabel;
-class QSlider;
 class QSpinBox;
 class QPushButton;
 class QFrame;
+class HSLGradientSlider;
+class ScreenPicker;
 
 class ContrastChecker : public QDialog {
     Q_OBJECT
@@ -32,6 +33,9 @@ private slots:
     void onPickTextColor();
     void onPickBackgroundColor();
     void onSwapColors();
+    void onTextColorPicked(const QColor &color);
+    void onBackgroundColorPicked(const QColor &color);
+    void onPickerError(const QString &message);
     void updateContrastRatio();
 
 private:
@@ -45,7 +49,6 @@ private slots:
 
     double calculateContrastRatio(const QColor &foreground, const QColor &background);
     double calculateRelativeLuminance(const QColor &color);
-    QString getComplianceLevel(double ratio);
 
     void saveGeometry();
     void loadGeometry();
@@ -58,17 +61,17 @@ private slots:
     QFrame *m_contrastPreview;
 
     // Text color HSL sliders
-    QSlider *m_textHueSlider;
-    QSlider *m_textSatSlider;
-    QSlider *m_textLightSlider;
+    HSLGradientSlider *m_textHueSlider;
+    HSLGradientSlider *m_textSatSlider;
+    HSLGradientSlider *m_textLightSlider;
     QSpinBox *m_textHueSpin;
     QSpinBox *m_textSatSpin;
     QSpinBox *m_textLightSpin;
 
     // Background color HSL sliders
-    QSlider *m_bgHueSlider;
-    QSlider *m_bgSatSlider;
-    QSlider *m_bgLightSlider;
+    HSLGradientSlider *m_bgHueSlider;
+    HSLGradientSlider *m_bgSatSlider;
+    HSLGradientSlider *m_bgLightSlider;
     QSpinBox *m_bgHueSpin;
     QSpinBox *m_bgSatSpin;
     QSpinBox *m_bgLightSpin;
@@ -77,6 +80,9 @@ private slots:
     QPushButton *m_pickBgColorBtn;
     QPushButton *m_swapColorsBtn;
 
+    ScreenPicker *m_textScreenPicker;
+    ScreenPicker *m_bgScreenPicker;
+
     // Contrast ratio display
     QLabel *m_ratioLabel;
     QLabel *m_normalTextLabel;

include/HSLGradientSlider.h

@@ -0,0 +1,34 @@
+#ifndef GRADIENTSLIDER_H
+#define GRADIENTSLIDER_H
+
+#include <QSlider>
+#include <QColor>
+
+class HSLGradientSlider : public QSlider {
+    Q_OBJECT
+
+public:
+    enum GradientType {
+        Hue,
+        Saturation,
+        Lightness
+    };
+
+    explicit HSLGradientSlider(Qt::Orientation orientation, GradientType type, QWidget *parent = nullptr);
+
+    void setGradientType(GradientType type);
+    void setBaseColor(const QColor &color); // For saturation and lightness gradients
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+
+private:
+    GradientType m_gradientType;
+    QColor m_baseColor;
+
+    QLinearGradient createHueGradient(const QRect &rect) const;
+    QLinearGradient createSaturationGradient(const QRect &rect) const;
+    QLinearGradient createLightnessGradient(const QRect &rect) const;
+};
+
+#endif // GRADIENTSLIDER_H