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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:29:01 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:29:01 +0000 |
commit | 35a96bde514a8897f6f0fcc41c5833bf63df2e2a (patch) | |
tree | 657d15a03cc46bd099fc2c6546a7a4ad43815d9f /src/ui/widget/spinbutton.h | |
parent | Initial commit. (diff) | |
download | inkscape-35a96bde514a8897f6f0fcc41c5833bf63df2e2a.tar.xz inkscape-35a96bde514a8897f6f0fcc41c5833bf63df2e2a.zip |
Adding upstream version 1.0.2.upstream/1.0.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/ui/widget/spinbutton.h')
-rw-r--r-- | src/ui/widget/spinbutton.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/ui/widget/spinbutton.h b/src/ui/widget/spinbutton.h new file mode 100644 index 0000000..710b511 --- /dev/null +++ b/src/ui/widget/spinbutton.h @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Author: + * Johan B. C. Engelen + * + * Copyright (C) 2011 Author + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef INKSCAPE_UI_WIDGET_SPINBUTTON_H +#define INKSCAPE_UI_WIDGET_SPINBUTTON_H + +#include <gtkmm/spinbutton.h> + +namespace Inkscape { +namespace UI { +namespace Widget { + +class UnitMenu; +class UnitTracker; + +/** + * SpinButton widget, that allows entry of simple math expressions (also units, when linked with UnitMenu), + * and allows entry of both '.' and ',' for the decimal, even when in numeric mode. + * + * Calling "set_numeric()" effectively disables the expression parsing. If no unit menu is linked, all unitlike characters are ignored. + */ +class SpinButton : public Gtk::SpinButton +{ +public: + SpinButton(double climb_rate = 0.0, guint digits = 0) + : Gtk::SpinButton(climb_rate, digits), + _unit_menu(nullptr), + _unit_tracker(nullptr), + _on_focus_in_value(0.) + { + connect_signals(); + }; + explicit SpinButton(Glib::RefPtr<Gtk::Adjustment>& adjustment, double climb_rate = 0.0, guint digits = 0) + : Gtk::SpinButton(adjustment, climb_rate, digits), + _unit_menu(nullptr), + _unit_tracker(nullptr), + _on_focus_in_value(0.) + { + connect_signals(); + }; + + ~SpinButton() override = default; + + // noncopyable + SpinButton(const SpinButton&) = delete; + SpinButton& operator=(const SpinButton&) = delete; + + void setUnitMenu(UnitMenu* unit_menu) { _unit_menu = unit_menu; }; + + void addUnitTracker(UnitTracker* ut) { _unit_tracker = ut; }; + +protected: + UnitMenu *_unit_menu; /// Linked unit menu for unit conversion in entered expressions. + UnitTracker *_unit_tracker; // Linked unit tracker for unit conversion in entered expressions. + double _on_focus_in_value; + + void connect_signals(); + + /** + * This callback function should try to convert the entered text to a number and write it to newvalue. + * It calls a method to evaluate the (potential) mathematical expression. + * + * @retval false No conversion done, continue with default handler. + * @retval true Conversion successful, don't call default handler. + */ + int on_input(double* newvalue) override; + + /** + * When focus is obtained, save the value to enable undo later. + * @retval false continue with default handler. + * @retval true don't call default handler. + */ + bool on_my_focus_in_event(GdkEventFocus* event); + + /** + * When scroll is done. + * @retval false continue with default handler. + * @retval true don't call default handler. + */ + bool on_scroll_event(GdkEventScroll *event) override; + /** + * Handle specific keypress events, like Ctrl+Z. + * + * @retval false continue with default handler. + * @retval true don't call default handler. + */ + bool on_my_key_press_event(GdkEventKey* event); + + /** + * Undo the editing, by resetting the value upon when the spinbutton got focus. + */ + void undo(); +}; + +} // namespace Widget +} // namespace UI +} // namespace Inkscape + +#endif // INKSCAPE_UI_WIDGET_SPINBUTTON_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 : |