1 files changed, 127 insertions, 0 deletions
diff --git a/src/ui/widget/color-scales.h b/src/ui/widget/color-scales.h
new file mode 100644
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+++ b/src/ui/widget/color-scales.h
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Color selector using sliders for each components, for multiple color modes
+ *//*
+ * Authors:
+ * see git history
+ *
+ * Copyright (C) 2018, 2021 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_SP_COLOR_SCALES_H
+#define SEEN_SP_COLOR_SCALES_H
+
+#include <gtkmm/box.h>
+#include <array>
+
+#include "ui/selected-color.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+class ColorSlider;
+class ColorWheel;
+
+enum class SPColorScalesMode {
+    NONE,
+    RGB,
+    HSL,
+    CMYK,
+    HSV,
+    HSLUV
+};
+
+template <SPColorScalesMode MODE = SPColorScalesMode::NONE>
+class ColorScales
+    : public Gtk::Box
+{
+public:
+    static gchar const *SUBMODE_NAMES[];
+
+    static gfloat getScaled(Glib::RefPtr<Gtk::Adjustment> const &a);
+    static void setScaled(Glib::RefPtr<Gtk::Adjustment> &a, gfloat v, bool constrained = false);
+
+    ColorScales(SelectedColor &color);
+    ~ColorScales() override;
+
+    void setupMode();
+    SPColorScalesMode getMode() const;
+
+    static guchar const *hsluvHueMap(gfloat s, gfloat l,
+            std::array<guchar, 4 * 1024> *map);
+    static guchar const *hsluvSaturationMap(gfloat h, gfloat l,
+            std::array<guchar, 4 * 1024> *map);
+    static guchar const *hsluvLightnessMap(gfloat h, gfloat s,
+            std::array<guchar, 4 * 1024> *map);
+
+protected:
+    void _onColorChanged();
+    void on_show() override;
+
+    virtual void _initUI();
+
+    void _sliderAnyGrabbed();
+    void _sliderAnyReleased();
+    void _sliderAnyChanged();
+    void _adjustmentChanged(int channel);
+    void _wheelChanged();
+
+    void _getRgbaFloatv(gfloat *rgba);
+    void _getCmykaFloatv(gfloat *cmyka);
+    guint32 _getRgba32();
+    void _updateSliders(guint channels);
+    void _recalcColor();
+    void _updateDisplay(bool update_wheel = true);
+
+    void _setRangeLimit(gdouble upper);
+
+    SelectedColor &_color;
+    gdouble _range_limit;
+    gboolean _updating : 1;
+    gboolean _dragging : 1;
+    std::vector<Glib::RefPtr<Gtk::Adjustment>> _a;        /* Channel adjustments */
+    Inkscape::UI::Widget::ColorSlider *_s[5];             /* Channel sliders */
+    Gtk::Widget *_b[5];                                   /* Spinbuttons */
+    Gtk::Label *_l[5];                                    /* Labels */
+    std::array<guchar, 4 * 1024> _sliders_maps[4];
+    Inkscape::UI::Widget::ColorWheel *_wheel;
+
+    const Glib::ustring _prefs = "/color_scales";
+    static gchar const * const _pref_wheel_visibility;
+
+    sigc::connection _color_changed;
+    sigc::connection _color_dragged;
+
+private:
+    // By default, disallow copy constructor and assignment operator
+    ColorScales(ColorScales const &obj) = delete;
+    ColorScales &operator=(ColorScales const &obj) = delete;
+};
+
+template <SPColorScalesMode MODE>
+class ColorScalesFactory : public Inkscape::UI::ColorSelectorFactory
+{
+public:
+    ColorScalesFactory();
+
+    Gtk::Widget *createWidget(Inkscape::UI::SelectedColor &color) const override;
+    Glib::ustring modeName() const override;
+};
+
+} // namespace Widget
+} // namespace UI
+} // namespace Inkscape
+
+#endif /* !SEEN_SP_COLOR_SCALES_H */
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim:filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99: