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-rw-r--r--src/ui/widget/spinbutton.cpp126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/ui/widget/spinbutton.cpp b/src/ui/widget/spinbutton.cpp
new file mode 100644
index 0000000..423ffe5
--- /dev/null
+++ b/src/ui/widget/spinbutton.cpp
@@ -0,0 +1,126 @@
+// 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.
+ */
+
+#include "spinbutton.h"
+
+#include "scroll-utils.h"
+#include "unit-menu.h"
+#include "unit-tracker.h"
+#include "util/expression-evaluator.h"
+#include "ui/tools/tool-base.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+int SpinButton::on_input(double* newvalue)
+{
+ if (_dont_evaluate) return false;
+
+ try {
+ Inkscape::Util::EvaluatorQuantity result;
+ if (_unit_menu || _unit_tracker) {
+ Unit const *unit = nullptr;
+ if (_unit_menu) {
+ unit = _unit_menu->getUnit();
+ } else {
+ unit = _unit_tracker->getActiveUnit();
+ }
+ Inkscape::Util::ExpressionEvaluator eval = Inkscape::Util::ExpressionEvaluator(get_text().c_str(), unit);
+ result = eval.evaluate();
+ // check if output dimension corresponds to input unit
+ if (result.dimension != (unit->isAbsolute() ? 1 : 0) ) {
+ throw Inkscape::Util::EvaluatorException("Input dimensions do not match with parameter dimensions.","");
+ }
+ } else {
+ Inkscape::Util::ExpressionEvaluator eval = Inkscape::Util::ExpressionEvaluator(get_text().c_str(), nullptr);
+ result = eval.evaluate();
+ }
+ *newvalue = result.value;
+ }
+ catch(Inkscape::Util::EvaluatorException &e) {
+ g_message ("%s", e.what());
+
+ return false;
+ }
+
+ return true;
+}
+
+bool SpinButton::on_focus_in_event(GdkEventFocus *event)
+{
+ _on_focus_in_value = get_value();
+ return parent_type::on_focus_in_event(event);
+}
+
+bool SpinButton::on_key_press_event(GdkEventKey* event)
+{
+ switch (Inkscape::UI::Tools::get_latin_keyval (event)) {
+ case GDK_KEY_Escape: // defocus
+ undo();
+ defocus();
+ return true; // I consumed the event
+ break;
+ case GDK_KEY_Return: // defocus
+ case GDK_KEY_KP_Enter:
+ defocus();
+ break;
+ case GDK_KEY_Tab:
+ case GDK_KEY_ISO_Left_Tab:
+ // set the flag meaning "do not leave toolbar when changing value"
+ _stay = true;
+ break;
+ case GDK_KEY_z:
+ case GDK_KEY_Z:
+ _stay = true;
+ if (event->state & GDK_CONTROL_MASK) {
+ undo();
+ return true; // I consumed the event
+ }
+ break;
+ default:
+ break;
+ }
+
+ return parent_type::on_key_press_event(event);
+}
+
+void SpinButton::undo()
+{
+ set_value(_on_focus_in_value);
+}
+
+void SpinButton::defocus()
+{
+ // defocus spinbutton by moving focus to the canvas, unless "stay" is on
+ if (_stay) {
+ _stay = false;
+ } else {
+ Gtk::Widget *widget = _defocus_widget ? _defocus_widget : get_scrollable_ancestor(this);
+ if (widget) {
+ widget->grab_focus();
+ }
+ }
+}
+
+} // namespace Widget
+} // namespace UI
+} // namespace Inkscape
+
+/*
+ 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 :