1 files changed, 146 insertions, 0 deletions
diff --git a/src/extension/prefdialog/parameter-color.cpp b/src/extension/prefdialog/parameter-color.cpp
new file mode 100644
index 0000000..b262afd
--- /dev/null
+++ b/src/extension/prefdialog/parameter-color.cpp
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2005-2007 Authors:
+ *   Ted Gould <ted@gould.cx>
+ *   Johan Engelen <johan@shouraizou.nl>
+ *   Christopher Brown <audiere@gmail.com>
+ *   Jon A. Cruz <jon@joncruz.org>
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "parameter-color.h"
+
+#include <iostream>
+#include <sstream>
+
+#include <gtkmm/box.h>
+#include <gtkmm/colorbutton.h>
+#include <gtkmm/label.h>
+
+#include "color.h"
+#include "preferences.h"
+
+#include "extension/extension.h"
+
+#include "ui/widget/color-notebook.h"
+
+#include "xml/node.h"
+
+
+namespace Inkscape {
+namespace Extension {
+
+ParamColor::ParamColor(Inkscape::XML::Node *xml, Inkscape::Extension::Extension *ext)
+    : InxParameter(xml, ext)
+{
+    // get value
+    unsigned int _value = 0x000000ff; // default to black
+    if (xml->firstChild()) {
+        const char *value = xml->firstChild()->content();
+        if (value) {
+            _value = strtoul(value, nullptr, 0);
+        }
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    _value = prefs->getUInt(pref_name(), _value);
+
+    _color.setValue(_value);
+
+    _color_changed = _color.signal_changed.connect(sigc::mem_fun(this, &ParamColor::_onColorChanged));
+    // TODO: SelectedColor does not properly emit signal_changed after dragging, so we also need the following
+    _color_released = _color.signal_released.connect(sigc::mem_fun(this, &ParamColor::_onColorChanged));
+
+    // parse appearance
+    if (_appearance) {
+        if (!strcmp(_appearance, "colorbutton")) {
+            _mode = COLOR_BUTTON;
+        } else {
+            g_warning("Invalid value ('%s') for appearance of parameter '%s' in extension '%s'",
+                      _appearance, _name, _extension->get_id());
+        }
+    }
+}
+
+ParamColor::~ParamColor()
+{
+    _color_changed.disconnect();
+    _color_released.disconnect();
+}
+
+unsigned int ParamColor::set(unsigned int in)
+{
+    _color.setValue(in);
+
+    return in;
+}
+
+Gtk::Widget *ParamColor::get_widget(sigc::signal<void> *changeSignal)
+{
+    if (_hidden) {
+        return nullptr;
+    }
+
+    if (changeSignal) {
+        _changeSignal = new sigc::signal<void>(*changeSignal);
+    }
+
+    Gtk::Box *hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, GUI_PARAM_WIDGETS_SPACING));
+    if (_mode == COLOR_BUTTON) {
+        Gtk::Label *label = Gtk::manage(new Gtk::Label(_text, Gtk::ALIGN_START));
+        label->show();
+        hbox->pack_start(*label, true, true);
+
+        Gdk::RGBA rgba;
+        rgba.set_red_u  (((_color.value() >> 24) & 255) << 8);
+        rgba.set_green_u(((_color.value() >> 16) & 255) << 8);
+        rgba.set_blue_u (((_color.value() >>  8) & 255) << 8);
+        rgba.set_alpha_u(((_color.value() >>  0) & 255) << 8);
+
+        // TODO: It would be nicer to have a custom Gtk::ColorButton() implementation here,
+        //       that wraps an Inkscape::UI::Widget::ColorNotebook into a new dialog
+        _color_button = Gtk::manage(new Gtk::ColorButton(rgba));
+        _color_button->set_title(_text);
+        _color_button->set_use_alpha();
+        _color_button->show();
+        hbox->pack_end(*_color_button, false, false);
+
+        _color_button->signal_color_set().connect(sigc::mem_fun(this, &ParamColor::_onColorButtonChanged));
+    } else {
+        Gtk::Widget *selector = Gtk::manage(new Inkscape::UI::Widget::ColorNotebook(_color));
+        hbox->pack_start(*selector, true, true, 0);
+        selector->show();
+    }
+    hbox->show();
+    return hbox;
+
+}
+
+void ParamColor::_onColorChanged()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setUInt(pref_name(), _color.value());
+
+    if (_changeSignal)
+        _changeSignal->emit();
+}
+
+void ParamColor::_onColorButtonChanged()
+{
+    Gdk::RGBA rgba = _color_button->get_rgba();
+    unsigned int value = ((rgba.get_red_u()   >> 8) << 24) +
+                         ((rgba.get_green_u() >> 8) << 16) +
+                         ((rgba.get_blue_u()  >> 8) <<  8) +
+                         ((rgba.get_alpha_u() >> 8) <<  0);
+    set(value);
+}
+
+std::string ParamColor::value_to_string() const
+{
+    char value_string[16];
+    snprintf(value_string, 16, "%u", _color.value());
+    return value_string;
+}
+
+};  /* namespace Extension */
+};  /* namespace Inkscape */