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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Author:
* Tavmjong Bah <tavmjong@free.fr>
*
* Copyright (C) 2018 Tavmong Bah
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*
*
* The routines here create and manage a font selector widget with three parts,
* one each for font-family, font-style, and font-size.
*
* It is used by the TextEdit and Glyphs panel dialogs. The FontLister class is used
* to access the list of font-families and their associated styles for fonts either
* on the system or in the document. The FontLister class is also used by the Text
* toolbar. Fonts are kept track of by their "fontspecs" which are the same as the
* strings that Pango generates.
*
* The main functions are:
* Create the font-seletor widget.
* Update the lists when a new text selection is made.
* Update the Style list when a new font-family is selected, highlighting the
* best match to the original font style (as not all fonts have the same style options).
* Emit a signal when any change is made so that the Text Preview can be updated.
* Provide the currently selected values.
*/
#ifndef INKSCAPE_UI_WIDGET_FONT_SELECTOR_H
#define INKSCAPE_UI_WIDGET_FONT_SELECTOR_H
#include <gtkmm/grid.h>
#include <gtkmm/frame.h>
#include <gtkmm/scrolledwindow.h>
#include <gtkmm/treeview.h>
#include <gtkmm/label.h>
#include <gtkmm/comboboxtext.h>
#include "ui/widget/font-variations.h"
#include "ui/widget/scrollprotected.h"
namespace Inkscape {
namespace UI {
namespace Widget {
/**
* A container of widgets for selecting font faces.
*
* It is used by the TextEdit and Glyphs panel dialogs. The FontSelector class utilizes the
* FontLister class to obtain a list of font-families and their associated styles for fonts either
* on the system or in the document. The FontLister class is also used by the Text toolbar. Fonts
* are kept track of by their "fontspecs" which are the same as the strings that Pango generates.
*
* The main functions are:
* Create the font-selector widget.
* Update the child widgets when a new text selection is made.
* Update the Style list when a new font-family is selected, highlighting the
* best match to the original font style (as not all fonts have the same style options).
* Emit a signal when any change is made to a child widget.
*/
class FontSelector : public Gtk::Grid
{
public:
/**
* Constructor
*/
FontSelector (bool with_size = true, bool with_variations = true);
protected:
// Font family
Gtk::Frame family_frame;
Gtk::ScrolledWindow family_scroll;
Gtk::TreeView family_treeview;
Gtk::TreeViewColumn family_treecolumn;
Gtk::CellRendererText family_cell;
// Font style
Gtk::Frame style_frame;
Gtk::ScrolledWindow style_scroll;
Gtk::TreeView style_treeview;
Gtk::TreeViewColumn style_treecolumn;
Gtk::CellRendererText style_cell;
// Font size
Gtk::Label size_label;
ScrollProtected<Gtk::ComboBoxText> size_combobox;
// Font variations
Gtk::ScrolledWindow font_variations_scroll;
FontVariations font_variations;
private:
// Set sizes in font size combobox.
void set_sizes();
void set_fontsize_tooltip();
// Use font style when listing style names.
void style_cell_data_func (Gtk::CellRenderer *renderer, Gtk::TreeIter const &iter);
// Signal handlers
void on_family_changed();
void on_style_changed();
void on_size_changed();
void on_variations_changed();
// Signals
sigc::signal<void, Glib::ustring> signal_changed;
void changed_emit();
bool signal_block;
// Variables
double font_size;
bool initial = true;
// control font variations update and UI element size
void update_variations(const Glib::ustring& fontspec);
public:
/**
* Update GUI based on fontspec
*/
void update_font ();
void update_size (double size);
/**
* Get fontspec based on current settings. (Does not handle size, yet.)
*/
Glib::ustring get_fontspec(bool use_variations = true);
/**
* Get font size. Could be merged with fontspec.
*/
double get_fontsize() { return font_size; };
/**
* Let others know that user has changed GUI settings.
* (Used to enable 'Apply' and 'Default' buttons.)
*/
sigc::connection connectChanged(sigc::slot<void, Glib::ustring> slot) {
return signal_changed.connect(slot);
}
};
} // namespace Widget
} // namespace UI
} // namespace Inkscape
#endif // INKSCAPE_UI_WIDGET_FONT_SETTINGS_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 :
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