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Diffstat (limited to 'src/extension/prefdialog/param/float.cpp')
| -rw-r--r-- | src/extension/prefdialog/param/float.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/extension/prefdialog/param/float.cpp b/src/extension/prefdialog/param/float.cpp new file mode 100644 index 000000000..661c533ca --- /dev/null +++ b/src/extension/prefdialog/param/float.cpp @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2005-2007 Authors: + * Ted Gould <ted@gould.cx> + * Johan Engelen <johan@shouraizou.nl> * + * Jon A. Cruz <jon@joncruz.org> + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include <gtkmm/adjustment.h> +#include <gtkmm/box.h> +#include <gtkmm/scale.h> +#include "ui/widget/spinbutton.h" +#include "ui/widget/spin-scale.h" + +#include "xml/node.h" +#include "extension/extension.h" +#include "preferences.h" +#include "./float.h" + +namespace Inkscape { +namespace Extension { + + +/** Use the superclass' allocator and set the \c _value. */ +ParamFloat::ParamFloat(const gchar * name, + const gchar * text, + const gchar * description, + bool hidden, + int indent, + Inkscape::Extension::Extension * ext, + Inkscape::XML::Node * xml, + AppearanceMode mode) + : Parameter(name, text, description, hidden, indent, ext) + , _value(0.0) + , _mode(mode) + , _min(0.0) + , _max(10.0) +{ + const gchar * defaultval = nullptr; + if (xml->firstChild() != nullptr) { + defaultval = xml->firstChild()->content(); + } + if (defaultval != nullptr) { + _value = g_ascii_strtod (defaultval,nullptr); + } + + const char * maxval = xml->attribute("max"); + if (maxval != nullptr) { + _max = g_ascii_strtod (maxval,nullptr); + } + + const char * minval = xml->attribute("min"); + if (minval != nullptr) { + _min = g_ascii_strtod (minval,nullptr); + } + + _precision = 1; + const char * precision = xml->attribute("precision"); + if (precision != nullptr) { + _precision = atoi(precision); + } + + /* We're handling this by just killing both values */ + if (_max < _min) { + _max = 10.0; + _min = 0.0; + } + + gchar * pref_name = this->pref_name(); + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + _value = prefs->getDouble(extension_pref_root + pref_name, _value); + g_free(pref_name); + + // std::cout << "New Float:: value: " << _value << " max: " << _max << " min: " << _min << std::endl; + + if (_value > _max) { + _value = _max; + } + if (_value < _min) { + _value = _min; + } + + return; +} + +/** + * A function to set the \c _value. + * + * This function sets the internal value, but it also sets the value + * in the preferences structure. To put it in the right place, \c PREF_DIR + * and \c pref_name() are used. + * + * @param in The value to set to. + * @param doc A document that should be used to set the value. + * @param node The node where the value may be placed. + */ +float ParamFloat::set(float in, SPDocument * /*doc*/, Inkscape::XML::Node * /*node*/) +{ + _value = in; + if (_value > _max) { + _value = _max; + } + if (_value < _min) { + _value = _min; + } + + gchar * prefname = this->pref_name(); + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + prefs->setDouble(extension_pref_root + prefname, _value); + g_free(prefname); + + return _value; +} + +void ParamFloat::string(std::string &string) const +{ + char startstring[G_ASCII_DTOSTR_BUF_SIZE]; + g_ascii_dtostr(startstring, G_ASCII_DTOSTR_BUF_SIZE, _value); + string += startstring; + return; +} + +/** A class to make an adjustment that uses Extension params. */ +class ParamFloatAdjustment : public Gtk::Adjustment { + /** The parameter to adjust. */ + ParamFloat * _pref; + SPDocument * _doc; + Inkscape::XML::Node * _node; + sigc::signal<void> * _changeSignal; +public: + /** Make the adjustment using an extension and the string + describing the parameter. */ + ParamFloatAdjustment (ParamFloat * param, SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal) : + Gtk::Adjustment(0.0, param->min(), param->max(), 0.1, 1.0, 0), _pref(param), _doc(doc), _node(node), _changeSignal(changeSignal) { + this->set_value(_pref->get(nullptr, nullptr) /* \todo fix */); + this->signal_value_changed().connect(sigc::mem_fun(this, &ParamFloatAdjustment::val_changed)); + return; + }; + + void val_changed (); +}; /* class ParamFloatAdjustment */ + +/** + * A function to respond to the value_changed signal from the adjustment. + * + * This function just grabs the value from the adjustment and writes + * it to the parameter. Very simple, but yet beautiful. + */ +void ParamFloatAdjustment::val_changed() +{ + //std::cout << "Value Changed to: " << this->get_value() << std::endl; + _pref->set(this->get_value(), _doc, _node); + if (_changeSignal != nullptr) { + _changeSignal->emit(); + } + return; +} + +/** + * Creates a Float Adjustment for a float parameter. + * + * Builds a hbox with a label and a float adjustment in it. + */ +Gtk::Widget * ParamFloat::get_widget(SPDocument * doc, Inkscape::XML::Node * node, sigc::signal<void> * changeSignal) +{ + if (_hidden) { + return nullptr; + } + + Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox(false, Parameter::GUI_PARAM_WIDGETS_SPACING)); + + auto pfa = new ParamFloatAdjustment(this, doc, node, changeSignal); + Glib::RefPtr<Gtk::Adjustment> fadjust(pfa); + + if (_mode == FULL) { + + Glib::ustring text; + if (_text != nullptr) + text = _text; + UI::Widget::SpinScale *scale = new UI::Widget::SpinScale(text, fadjust, _precision); + scale->set_size_request(400, -1); + scale->show(); + hbox->pack_start(*scale, true, true); + + } + else if (_mode == MINIMAL) { + + Gtk::Label * label = Gtk::manage(new Gtk::Label(_text, Gtk::ALIGN_START)); + label->show(); + hbox->pack_start(*label, true, true); + + auto spin = Gtk::manage(new Inkscape::UI::Widget::SpinButton(fadjust, 0.1, _precision)); + spin->show(); + hbox->pack_start(*spin, false, false); + } + + hbox->show(); + + return dynamic_cast<Gtk::Widget *>(hbox); +} + + +} /* namespace Extension */ +} /* namespace Inkscape */ |