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Diffstat (limited to 'src/ui/widget/font-selector.h')
| -rw-r--r-- | src/ui/widget/font-selector.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/ui/widget/font-selector.h b/src/ui/widget/font-selector.h new file mode 100644 index 0000000..e1d358e --- /dev/null +++ b/src/ui/widget/font-selector.h @@ -0,0 +1,165 @@ +// 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 : |