381 lines
13 KiB
C++
381 lines
13 KiB
C++
/************************************************************************
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**
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** @file vgraphicssimpletextitem.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date November 15, 2013
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2015 Valentina project
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** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
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**
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** Valentina is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vgraphicssimpletextitem.h"
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#include <QEvent>
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#include <QFlags>
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#include <QFont>
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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#include <QKeyEvent>
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#include <QList>
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#include <QMessageLogger>
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#include <QPalette>
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#include <QPoint>
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#include <QPolygonF>
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#include <QRectF>
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#include <Qt>
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#include "vmaingraphicsscene.h"
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#include "vmaingraphicsview.h"
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#include "global.h"
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#include "vscenepoint.h"
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#include "../vmisc/vmath.h"
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#include "../vmisc/vabstractvalapplication.h"
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#include "../vmisc/literals.h"
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VGraphicsSimpleTextItem default constructor.
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* @param parent parent object.
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*/
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VGraphicsSimpleTextItem::VGraphicsSimpleTextItem(QGraphicsItem * parent)
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: QGraphicsSimpleTextItem(parent),
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selectionType(SelectionType::ByMouseRelease),
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m_oldScale(1),
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m_showParentTooltip(true)
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{
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Init();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VGraphicsSimpleTextItem constructor.
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* @param text text.
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* @param parent parent object.
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*/
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VGraphicsSimpleTextItem::VGraphicsSimpleTextItem( const QString & text, QGraphicsItem * parent )
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: QGraphicsSimpleTextItem(text, parent),
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selectionType(SelectionType::ByMouseRelease),
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m_oldScale(1),
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m_showParentTooltip(true)
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{
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Init();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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auto UpdateLine = [this]()
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{
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if (VScenePoint *parent = dynamic_cast<VScenePoint *>(parentItem()))
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{
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parent->RefreshLine();
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}
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};
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QFont font = this->font();
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if (font.pointSize() != VAbstractApplication::VApp()->Settings()->GetLabelFontSize())
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{
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font.setPointSize(VAbstractApplication::VApp()->Settings()->GetLabelFontSize());
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setFont(font);
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}
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QGraphicsScene *scene = this->scene();
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const qreal scale = SceneScale(scene);
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if (scale > 1 && not VFuzzyComparePossibleNulls(m_oldScale, scale))
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{
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setScale(1/scale);
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CorrectLabelPosition();
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UpdateLine();
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m_oldScale = scale;
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}
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else if (scale <= 1 && not VFuzzyComparePossibleNulls(m_oldScale, 1.0))
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{
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setScale(1);
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CorrectLabelPosition();
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UpdateLine();
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m_oldScale = 1;
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}
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if (QGraphicsView *view = scene->views().at(0))
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{
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VMainGraphicsView::NewSceneRect(scene, view, this);
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}
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PaintWithFixItemHighlightSelected<QGraphicsSimpleTextItem>(this, painter, option, widget);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::setEnabled(bool enabled)
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{
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QGraphicsSimpleTextItem::setEnabled(enabled);
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if (this->scene())
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{
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const QPalette palet = this->scene()->palette();
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if (enabled)
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{
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setBrush(palet.brush(QPalette::Active, QPalette::Text));
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}
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else
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{
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setBrush(palet.brush(QPalette::Disabled, QPalette::Text));
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::LabelSelectionType(const SelectionType &type)
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{
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selectionType = type;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::SetShowParentTooltip(bool show)
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{
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m_showParentTooltip = show;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::SetRealPos(const QPointF &pos)
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{
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m_realPos = pos;
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CorrectLabelPosition();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::CorrectLabelPosition()
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{
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const qreal scale = SceneScale(scene());
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QPointF newPos = m_realPos;
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if (scale > 1)
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{
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QLineF line(m_destination, m_realPos);
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line.setLength(line.length() / scale);
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newPos = line.p2();
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}
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blockSignals(true);
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, false);
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setPos(newPos);
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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blockSignals(false);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief itemChange handle item change.
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* @param change change.
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* @param value value.
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* @return value.
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*/
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QVariant VGraphicsSimpleTextItem::itemChange(GraphicsItemChange change, const QVariant &value)
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{
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if (change == ItemPositionChange && scene())
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{
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// Each time we move something we call recalculation scene rect. In some cases this can cause moving
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// objects positions. And this cause infinite redrawing. That's why we wait the finish of saving the last move.
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static bool changeFinished = true;
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if (changeFinished)
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{
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changeFinished = false;
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if (scene())
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{
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const QList<QGraphicsView *> viewList = scene()->views();
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if (not viewList.isEmpty())
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{
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if (VMainGraphicsView *view = qobject_cast<VMainGraphicsView *>(viewList.at(0)))
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{
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view->EnsureItemVisibleWithDelay(this, VMainGraphicsView::scrollDelay);
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}
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}
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}
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m_realPos = value.toPointF();
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const qreal scale = SceneScale(scene());
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if (scale > 1)
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{
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QLineF line(QPointF(), m_realPos);
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line.setLength(line.length() * scale);
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m_realPos = line.p2();
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}
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emit NameChangePosition(m_realPos + this->parentItem()->pos());
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changeFinished = true;
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}
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}
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if (change == QGraphicsItem::ItemSelectedHasChanged)
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{
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setFlag(QGraphicsItem::ItemIsFocusable, value.toBool());
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emit PointSelected(value.toBool());
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}
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return QGraphicsSimpleTextItem::itemChange(change, value);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief hoverEnterEvent handle hover enter events.
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* @param event hover enter event.
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*/
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void VGraphicsSimpleTextItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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if (flags() & QGraphicsItem::ItemIsMovable)
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{
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SetItemOverrideCursor(this, cursorArrowOpenHand, 1, 1);
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}
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else
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{
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setCursor(VAbstractValApplication::VApp()->getSceneView()->viewport()->cursor());
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}
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this->setBrush(Qt::green);
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QGraphicsItem *parent = parentItem();
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if(parent && m_showParentTooltip)
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{
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setToolTip(parent->toolTip());
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}
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QGraphicsSimpleTextItem::hoverEnterEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief hoverLeaveEvent handle hover leave events.
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* @param event hover leave event.
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*/
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void VGraphicsSimpleTextItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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this->setBrush(m_baseColor);
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QGraphicsSimpleTextItem::hoverLeaveEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief contextMenuEvent handle context menu events.
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* @param event context menu event.
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*/
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void VGraphicsSimpleTextItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
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{
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emit ShowContextMenu(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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// Special for not selectable item first need to call standard mousePressEvent then accept event
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QGraphicsSimpleTextItem::mousePressEvent(event);
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// Somehow clicking on notselectable object do not clean previous selections.
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if (not (flags() & ItemIsSelectable) && scene())
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{
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scene()->clearSelection();
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}
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if (flags() & QGraphicsItem::ItemIsMovable)
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{
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if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
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{
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SetItemOverrideCursor(this, cursorArrowCloseHand, 1, 1);
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event->accept();
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}
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}
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if (selectionType == SelectionType::ByMouseRelease)
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{
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event->accept(); // This help for not selectable items still receive mouseReleaseEvent events
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}
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else
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{
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if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
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{
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emit PointChoosed();
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event->accept();
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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if (flags() & QGraphicsItem::ItemIsMovable)
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{
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if (event->button() == Qt::LeftButton && event->type() != QEvent::GraphicsSceneMouseDoubleClick)
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{
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SetItemOverrideCursor(this, cursorArrowOpenHand, 1, 1);
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}
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}
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if (selectionType == SelectionType::ByMouseRelease && IsSelectedByReleaseEvent(this, event))
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{
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emit PointChoosed();
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}
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QGraphicsSimpleTextItem::mouseReleaseEvent(event);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::keyReleaseEvent(QKeyEvent *event)
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{
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switch (event->key())
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{
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case Qt::Key_Delete:
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emit DeleteTool();
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return; //Leave this method immediately after call!!!
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default:
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break;
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}
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QGraphicsSimpleTextItem::keyReleaseEvent ( event );
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::SetDestination(const QPointF &destination)
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{
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m_destination = destination;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QColor VGraphicsSimpleTextItem::BaseColor() const
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{
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return m_baseColor;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::SetBaseColor(const QColor &baseColor)
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{
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m_baseColor = baseColor;
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setBrush(m_baseColor);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VGraphicsSimpleTextItem::Init()
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{
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this->setFlag(QGraphicsItem::ItemIsMovable, true);
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this->setFlag(QGraphicsItem::ItemIsSelectable, true);
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this->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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this->setFlag(QGraphicsItem::ItemIsFocusable, true);// For keyboard input focus
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this->setAcceptHoverEvents(true);
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QFont font = this->font();
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font.setPointSize(VAbstractApplication::VApp()->Settings()->GetLabelFontSize());
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setFont(font);
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m_oldScale = minVisibleFontSize / VAbstractApplication::VApp()->Settings()->GetLabelFontSize();
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setScale(m_oldScale);
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}
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