Mercurial > octave
view libgui/graphics/ListBoxControl.cc @ 31707:5f11de0e7440
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 06 Jan 2023 13:12:14 -0500 |
parents | deb553ac2c54 597f3ee61a48 |
children | 21f9b34eb893 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2011-2023 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <QListWidget> #include <QEvent> #include <QMouseEvent> #include "Container.h" #include "ListBoxControl.h" #include "QtHandlesUtils.h" OCTAVE_BEGIN_NAMESPACE(octave) static void updateSelection (QListWidget *list, const Matrix& value) { octave_idx_type n = value.numel (); int lc = list->count (); list->clearSelection (); for (octave_idx_type i = 0; i < n; i++) { int idx = octave::math::round (value(i)); if (1 <= idx && idx <= lc) { list->item (idx-1)->setSelected (true); list->scrollToItem (list->item (idx-1)); if (i == 0 && list->selectionMode () == QAbstractItemView::SingleSelection) break; } else { // Invalid selection. list->clearSelection (); break; } } } ListBoxControl * ListBoxControl::create (octave::interpreter& interp, const graphics_object& go) { Object *parent = parentObject (interp, go); if (parent) { Container *container = parent->innerContainer (); if (container) return new ListBoxControl (interp, go, new QListWidget (container)); } return nullptr; } ListBoxControl::ListBoxControl (octave::interpreter& interp, const graphics_object& go, QListWidget *list) : BaseControl (interp, go, list), m_blockCallback (false), m_selectionChanged (false) { uicontrol::properties& up = properties<uicontrol> (); list->addItems (Utils::fromStringVector (up.get_string_vector ())); if ((up.get_max () - up.get_min ()) > 1) list->setSelectionMode (QAbstractItemView::ExtendedSelection); else list->setSelectionMode (QAbstractItemView::SingleSelection); Matrix value = up.get_value ().matrix_value (); if (value.numel () > 0) { octave_idx_type n = value.numel (); int lc = list->count (); for (octave_idx_type i = 0; i < n; i++) { int idx = octave::math::round (value(i)); if (1 <= idx && idx <= lc) { list->item (idx-1)->setSelected (true); list->scrollToItem (list->item (idx-1)); if (i == 0 && (list->selectionMode () == QAbstractItemView::SingleSelection)) break; } } } list->viewport ()->installEventFilter (this); connect (list, &QListWidget::itemSelectionChanged, this, &ListBoxControl::itemSelectionChanged); connect (list, &QListWidget::activated, this, &ListBoxControl::itemActivated); connect (list, &QListWidget::itemPressed, this, &ListBoxControl::itemPressed); } ListBoxControl::~ListBoxControl (void) { } void ListBoxControl::update (int pId) { uicontrol::properties& up = properties<uicontrol> (); QListWidget *list = qWidget<QListWidget> (); switch (pId) { case uicontrol::properties::ID_STRING: m_blockCallback = true; list->clear (); list->addItems (Utils::fromStringVector (up.get_string_vector ())); updateSelection (list, up.get_value ().matrix_value ()); m_blockCallback = false; break; case uicontrol::properties::ID_MIN: case uicontrol::properties::ID_MAX: if ((up.get_max () - up.get_min ()) > 1) list->setSelectionMode (QAbstractItemView::ExtendedSelection); else list->setSelectionMode (QAbstractItemView::SingleSelection); break; case uicontrol::properties::ID_LISTBOXTOP: { int idx = octave::math::fix (up.get_listboxtop ()); if (idx > 0) list->scrollToItem (list->item (idx-1), QAbstractItemView::PositionAtTop); break; } case uicontrol::properties::ID_VALUE: m_blockCallback = true; updateSelection (list, up.get_value ().matrix_value ()); m_blockCallback = false; break; default: BaseControl::update (pId); break; } } void ListBoxControl::sendSelectionChange () { if (! m_blockCallback) { QListWidget *list = qWidget<QListWidget> (); QModelIndexList l = list->selectionModel ()->selectedIndexes (); Matrix value (dim_vector (1, l.size ())); int i = 0; for (const auto& idx : l) value(i++) = idx.row () + 1; emit gh_set_event (m_handle, "value", octave_value (value), false); emit gh_callback_event (m_handle, "callback"); } m_selectionChanged = false; } void ListBoxControl::itemSelectionChanged (void) { if (! m_blockCallback) m_selectionChanged = true; } void ListBoxControl::itemActivated (const QModelIndex&) { m_selectionChanged = true; } void ListBoxControl::itemPressed (QListWidgetItem *) { m_selectionChanged = true; } bool ListBoxControl::eventFilter (QObject *watched, QEvent *e) { // listbox change if (watched == m_qobject) { switch (e->type ()) { case QEvent::KeyRelease: if (m_selectionChanged) sendSelectionChange (); m_selectionChanged = false; break; default: break; } return Object::eventFilter (watched, e); } // listbox viewport else { bool override_return = false; QListWidget *list = qWidget<QListWidget> (); switch (e->type ()) { case QEvent::MouseButtonPress: { QMouseEvent *m = dynamic_cast<QMouseEvent *> (e); if (m->button () & Qt::RightButton) override_return = true; else { if (! list->indexAt (m->pos ()).isValid ()) override_return = true; m_selectionChanged = true; } break; } case QEvent::MouseButtonRelease: { QMouseEvent *m = dynamic_cast<QMouseEvent *> (e); if (m->button () & Qt::RightButton) override_return = true; else if (! list->indexAt (m->pos ()).isValid ()) { list->setCurrentRow (list->count () - 1); override_return = true; } if (m_selectionChanged) sendSelectionChange (); m_selectionChanged = false; break; } default: break; } return BaseControl::eventFilter (watched, e) || override_return; } } OCTAVE_END_NAMESPACE(octave)