1 files changed, 105 insertions, 0 deletions
diff --git a/src/widgets/sp-color-selector.h b/src/widgets/sp-color-selector.h
new file mode 100644
index 0000000..eb77250
--- /dev/null
+++ b/src/widgets/sp-color-selector.h
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SEEN_SP_COLOR_SELECTOR_H
+#define SEEN_SP_COLOR_SELECTOR_H
+
+#include <gtk/gtk.h>
+#include "color.h"
+
+struct SPColorSelector;
+
+class ColorSelector
+{
+public:
+    ColorSelector( SPColorSelector* csel );
+    virtual ~ColorSelector();
+
+    virtual void init();
+
+    void setColor( const SPColor& color );
+    SPColor getColor() const;
+
+    void setAlpha( gfloat alpha );
+    gfloat getAlpha() const;
+
+    void setColorAlpha( const SPColor& color, gfloat alpha, bool emit = false );
+    void getColorAlpha( SPColor &color, gfloat &alpha ) const;
+
+    virtual void setSubmode( guint submode );
+    virtual guint getSubmode() const;
+
+protected:
+    void _grabbed();
+    void _released();
+    void _updateInternals( const SPColor& color, gfloat alpha, gboolean held );
+    gboolean _isHeld() const { return _held; }
+
+    virtual void _colorChanged();
+
+    static double _epsilon;
+
+    SPColorSelector* _csel;
+    SPColor _color;
+    gfloat _alpha;      // guaranteed to be in [0, 1].
+
+private:
+    // By default, disallow copy constructor and assignment operator
+    ColorSelector( const ColorSelector& obj ) = delete;
+    ColorSelector& operator=( const ColorSelector& obj ) = delete;
+
+    gboolean _held;
+
+    bool virgin; // if true, no color is set yet
+};
+
+
+
+#define SP_TYPE_COLOR_SELECTOR (sp_color_selector_get_type ())
+#define SP_COLOR_SELECTOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), SP_TYPE_COLOR_SELECTOR, SPColorSelector))
+#define SP_COLOR_SELECTOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), SP_TYPE_COLOR_SELECTOR, SPColorSelectorClass))
+#define SP_IS_COLOR_SELECTOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), SP_TYPE_COLOR_SELECTOR))
+#define SP_IS_COLOR_SELECTOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), SP_TYPE_COLOR_SELECTOR))
+#define SP_COLOR_SELECTOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), SP_TYPE_COLOR_SELECTOR, SPColorSelectorClass))
+
+struct SPColorSelector {
+    GtkBox vbox;
+    ColorSelector* base;
+};
+
+struct SPColorSelectorClass {
+    GtkBoxClass parent_class;
+
+    const gchar **name;
+    guint submode_count;
+
+    void (* grabbed) (SPColorSelector *rgbsel);
+    void (* dragged) (SPColorSelector *rgbsel);
+    void (* released) (SPColorSelector *rgbsel);
+    void (* changed) (SPColorSelector *rgbsel);
+};
+
+GType sp_color_selector_get_type();
+
+GtkWidget *sp_color_selector_new( GType selector_type );
+
+
+
+#endif // SEEN_SP_COLOR_SELECTOR_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 :