42 lines
954 B
C++
42 lines
954 B
C++
#include "comboboxex.h"
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#include "project/undo.h"
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#include <QUndoCommand>
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#include <QWheelEvent>
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class ComboBoxExCommand : public QUndoCommand {
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public:
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ComboBoxExCommand(ComboBoxEx* obj, int old_index, int new_index) :
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combobox(obj), old_val(old_index), new_val(new_index), done(true) {}
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void undo() {
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combobox->setCurrentIndex(old_val);
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done = false;
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}
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void redo() {
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if (!done) {
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combobox->setCurrentIndex(new_val);
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}
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}
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private:
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ComboBoxEx* combobox;
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int old_val;
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int new_val;
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bool done;
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};
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ComboBoxEx::ComboBoxEx(QWidget *parent) : QComboBox(parent), index(0) {
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connect(this, SIGNAL(activated(int)), this, SLOT(index_changed(int)));
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}
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void ComboBoxEx::index_changed(int i) {
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if (index != i) {
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undo_stack.push(new ComboBoxExCommand(this, index, i));
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index = i;
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}
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}
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void ComboBoxEx::wheelEvent(QWheelEvent* e) {
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e->ignore();
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}
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