694 lines
23 KiB
C++
694 lines
23 KiB
C++
/************************************************************************
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**
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** @file vtextgraphicsitem.cpp
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** @author Bojan Kverh
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** @date June 16, 2016
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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 Valentine 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://bitbucket.org/dismine/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 <QColor>
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#include <QFlags>
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#include <QFont>
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#include <QGraphicsItem>
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#include <QGraphicsSceneHoverEvent>
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#include <QGraphicsSceneMouseEvent>
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#include <QPainter>
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#include <QPen>
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#include <QPoint>
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#include <QStyleOptionGraphicsItem>
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#include <Qt>
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#include "../vmisc/def.h"
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#include "../vmisc/vmath.h"
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#include "vtextgraphicsitem.h"
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class QGraphicsSceneHoverEvent;
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class QGraphicsSceneMouseEvent;
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class QStyleOptionGraphicsItem;
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class QWidget;
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class VAbstractPattern;
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class VPatternPieceData;
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const qreal resizeSquare = (3./*mm*/ / 25.4) * PrintDPI;
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const qreal rotateCircle = (2./*mm*/ / 25.4) * PrintDPI;
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#define ROTATE_RECT 60
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#define ROTATE_ARC 50
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const qreal minW = (4./*mm*/ / 25.4) * PrintDPI + resizeSquare;
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const qreal minH = (4./*mm*/ / 25.4) * PrintDPI + resizeSquare;
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#define INACTIVE_Z 2
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#define ACTIVE_Z 10
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::VTextGraphicsItem constructor
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* @param pParent pointer to the parent item
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*/
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VTextGraphicsItem::VTextGraphicsItem(QGraphicsItem* pParent)
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: QGraphicsObject(pParent),
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m_eMode(VTextGraphicsItem::mNormal),
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m_bReleased(false),
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m_ptStartPos(),
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m_ptStart(),
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m_ptRotCenter(),
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m_szStart(),
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m_dRotation(0),
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m_dAngle(0),
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m_rectResize(),
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m_rectBoundingBox(),
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m_tm()
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{
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m_rectBoundingBox.setTopLeft(QPointF(0, 0));
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SetSize(minW, minH);
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setZValue(INACTIVE_Z);
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setAcceptHoverEvents(true);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::~VTextGraphicsItem destructor
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*/
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VTextGraphicsItem::~VTextGraphicsItem()
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{}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::SetFont sets the item font
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* @param fnt font to be used in item
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*/
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void VTextGraphicsItem::SetFont(const QFont& fnt)
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{
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m_tm.SetFont(fnt);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::paint redraws the item content
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* @param painter pointer to the QPainter in use
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* @param option pointer to the object containing the actual label rectangle
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* @param widget not used
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*/
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void VTextGraphicsItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(widget);
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Q_UNUSED(option);
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painter->fillRect(m_rectBoundingBox, QColor(251, 251, 175));
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painter->setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
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painter->setPen(Qt::black);
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QFont fnt = m_tm.GetFont();
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int iW = qFloor(boundingRect().width());
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// draw text lines
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int iY = 0;
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for (int i = 0; i < m_tm.GetSourceLinesCount(); ++i)
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{
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const TextLine& tl = m_tm.GetSourceLine(i);
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fnt.setPixelSize(m_tm.GetFont().pixelSize() + tl.m_iFontSize);
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fnt.setWeight(tl.m_eFontWeight);
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fnt.setStyle(tl.m_eStyle);
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QString qsText = tl.m_qsText;
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QFontMetrics fm(fnt);
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// check if the next line will go out of bounds
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if (iY + fm.height() > boundingRect().height())
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{
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break;
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}
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if (fm.width(qsText) > iW)
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{
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qsText = fm.elidedText(qsText, Qt::ElideMiddle, iW);
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}
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painter->setFont(fnt);
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painter->drawText(0, iY, iW, fm.height(), tl.m_eAlign, qsText);
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iY += fm.height() + m_tm.GetSpacing();
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}
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// now draw the features specific to non-normal modes
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if (m_eMode != mNormal)
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{
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// outline the rectangle
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painter->setPen(QPen(Qt::black, 2, Qt::DashLine));
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painter->drawRect(boundingRect().adjusted(1, 1, -1, -1));
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if (m_eMode != mRotate)
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{
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// draw the resize square
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painter->setPen(Qt::black);
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painter->setBrush(Qt::black);
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painter->drawRect(m_rectResize.adjusted(-1, -1, -1, -1));
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if (m_eMode == mResize)
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{
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// draw the resize diagonal lines
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painter->drawLine(1, 1, qFloor(m_rectBoundingBox.width())-1, qFloor(m_rectBoundingBox.height())-1);
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painter->drawLine(1, qFloor(m_rectBoundingBox.height())-1, qFloor(m_rectBoundingBox.width())-1, 1);
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}
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}
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else
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{
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// in rotate mode, draw the circle in the middle
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painter->setPen(Qt::black);
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painter->setBrush(Qt::black);
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painter->drawEllipse(
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QPointF(m_rectBoundingBox.width()/2, m_rectBoundingBox.height()/2),
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rotateCircle,
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rotateCircle
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);
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if (m_rectBoundingBox.width() > minW*3 && m_rectBoundingBox.height() > minH*3)
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{
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painter->setPen(QPen(Qt::black, 3));
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painter->setBrush(Qt::NoBrush);
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// and then draw the arc in each of the corners
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int iTop = ROTATE_RECT - ROTATE_ARC;
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int iLeft = ROTATE_RECT - ROTATE_ARC;
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int iRight = qRound(m_rectBoundingBox.width()) - ROTATE_RECT;
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int iBottom = qRound(m_rectBoundingBox.height()) - ROTATE_RECT;
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painter->drawArc(iLeft, iTop, ROTATE_ARC, ROTATE_ARC, 180*16, -90*16);
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painter->drawArc(iRight, iTop, ROTATE_ARC, ROTATE_ARC, 90*16, -90*16);
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painter->drawArc(iLeft, iBottom, ROTATE_ARC, ROTATE_ARC, 270*16, -90*16);
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painter->drawArc(iRight, iBottom, ROTATE_ARC, ROTATE_ARC, 0*16, -90*16);
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}
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::Reset resets the item, putting the mode and z coordinate to normal and redraws it
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*/
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void VTextGraphicsItem::Reset()
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{
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m_eMode = mNormal;
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m_bReleased = false;
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Update();
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setZValue(INACTIVE_Z);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::IsIdle checks if the item is in normal mode.
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* @return true, if item is in normal mode and false otherwise.
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*/
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bool VTextGraphicsItem::IsIdle() const
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{
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return m_eMode == mNormal;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::AddLine adds a line of text to the label list.
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* @param tl line of text to add
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*/
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void VTextGraphicsItem::AddLine(const TextLine& tl)
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{
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m_tm.AddSourceLine(tl);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::Clear deletes all the label texts
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*/
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void VTextGraphicsItem::Clear()
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{
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m_tm.ClearSourceLines();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::SetSize Tries to set the label size to (fW, fH). If any of those is too small, the label
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* size does not change.
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* @param fW label width
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* @param fH label height
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*/
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void VTextGraphicsItem::SetSize(qreal fW, qreal fH)
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{
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qDebug() << "Setting size to" << fW << parentItem()->boundingRect().width();
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// don't allow resize under specific size
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if (fW > parentItem()->boundingRect().width())
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{
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fW = parentItem()->boundingRect().width();
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}
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if (fW < minW)
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{
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fW = minW;
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}
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if (fH > parentItem()->boundingRect().height())
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{
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fH = parentItem()->boundingRect().height();
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}
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if (fH < minH)
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{
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fH = minH;
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}
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prepareGeometryChange();
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qDebug() << "Actual size set to" << fW;
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m_rectBoundingBox.setTopLeft(QPointF(0, 0));
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m_rectBoundingBox.setWidth(fW);
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m_rectBoundingBox.setHeight(fH);
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m_rectResize.setTopLeft(QPointF(fW - resizeSquare, fH - resizeSquare));
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m_rectResize.setWidth(resizeSquare);
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m_rectResize.setHeight(resizeSquare);
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setTransformOriginPoint(m_rectBoundingBox.center());
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::Update sets the correct size and font size and redraws the label
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*/
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void VTextGraphicsItem::Update()
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{
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CorrectLabel();
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UpdateBox();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::IsContained checks if the bounding box around rotated rectBB is contained in
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* the parent. If that is not the case, it calculates the amount of movement needed to put it inside the parent
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* and write it into dX, dY
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* @param rectBB bounding box in question
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* @param dRot bounding box rotation in degrees
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* @param dX horizontal translation needed to put the box inside parent item
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* @param dY vertical translation needed to put the box inside parent item
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* @return true, if rectBB is contained in parent item and false otherwise
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*/
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bool VTextGraphicsItem::IsContained(QRectF rectBB, qreal dRot, qreal &dX, qreal &dY) const
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{
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QRectF rectParent = parentItem()->boundingRect();
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rectBB = GetBoundingRect(rectBB, dRot);
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dX = 0;
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dY = 0;
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if (rectParent.contains(rectBB) == false)
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{
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if (rectParent.left() - rectBB.left() > fabs(dX))
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{
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dX = rectParent.left() - rectBB.left();
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}
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else if (rectBB.right() - rectParent.right() > fabs(dX))
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{
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dX = rectParent.right() - rectBB.right();
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}
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if (rectParent.top() - rectBB.top() > fabs(dY))
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{
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dY = rectParent.top() - rectBB.top();
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}
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else if (rectBB.bottom() - rectParent.bottom() > fabs(dY))
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{
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dY = rectParent.bottom() - rectBB.bottom();
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}
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return false;
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}
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return true;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::UpdateData Updates the detail label
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* @param qsName name of detail
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* @param data reference to VPatternPieceData
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*/
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void VTextGraphicsItem::UpdateData(const QString &qsName, const VPatternPieceData &data)
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{
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m_tm.Update(qsName, data);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::UpdateData Updates the pattern label
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* @param pDoc pointer to the pattern object
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*/
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void VTextGraphicsItem::UpdateData(const VAbstractPattern* pDoc, qreal dSize, qreal dHeight)
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{
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m_tm.Update(pDoc, dSize, dHeight);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::GetTextLines returns the number of lines of text to show
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* @return number of lines of text
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*/
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int VTextGraphicsItem::GetTextLines() const
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{
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return m_tm.GetSourceLinesCount();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::GetFontSize returns the currently used text base font size
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* @return current text base font size
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*/
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int VTextGraphicsItem::GetFontSize() const
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{
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return m_tm.GetFont().pixelSize();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::boundingRect returns the label bounding box
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* @return label bounding box
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*/
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QRectF VTextGraphicsItem::boundingRect() const
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{
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return m_rectBoundingBox;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::mousePressEvent handles left button mouse press events
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* @param pME pointer to QGraphicsSceneMouseEvent object
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*/
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void VTextGraphicsItem::mousePressEvent(QGraphicsSceneMouseEvent *pME)
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{
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if (pME->button() == Qt::LeftButton)
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{
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// record the parameters of the mouse press. Specially record the position
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// of the press as the origin for the following operations
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m_ptStartPos = pos();
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m_ptStart = pME->scenePos();
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m_szStart = m_rectBoundingBox.size();
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m_ptRotCenter = mapToScene(m_rectBoundingBox.center());
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m_dAngle = GetAngle(pME->scenePos());
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m_dRotation = rotation();
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// in rotation mode, do not do any changes here, because user might want to
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// rotate the label more.
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if (m_eMode != mRotate)
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{
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// if user pressed the button inside the resize square, switch to resize mode
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if (m_rectResize.contains(pME->pos()) == true)
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{
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m_eMode = mResize;
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SetOverrideCursor(Qt::SizeFDiagCursor);
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}
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else
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{
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// if user pressed the button outside the resize square, switch to move mode
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m_eMode = mMove;
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SetOverrideCursor(cursorArrowCloseHand, 1, 1);
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}
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}
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else
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{
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SetOverrideCursor(cursorArrowCloseHand, 1, 1);
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}
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// raise the label and redraw it
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setZValue(ACTIVE_Z);
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UpdateBox();
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::mouseMoveEvent handles mouse move events
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* @param pME pointer to QGraphicsSceneMouseEvent object
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*/
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void VTextGraphicsItem::mouseMoveEvent(QGraphicsSceneMouseEvent* pME)
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{
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qreal dX;
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qreal dY;
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QRectF rectBB;
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const QPointF ptDiff = pME->scenePos() - m_ptStart;
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if (m_eMode == mMove)
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{
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// in move mode move the label along the mouse move from the origin
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QPointF pt = m_ptStartPos + ptDiff;
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rectBB.setTopLeft(pt);
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rectBB.setWidth(m_rectBoundingBox.width());
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rectBB.setHeight(m_rectBoundingBox.height());
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// before moving label to a new position, check if it will still be inside the parent item
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if (IsContained(rectBB, rotation(), dX, dY) == false)
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{
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pt.setX(pt.x() + dX);
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pt.setY(pt.y() + dY);
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}
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setPos(pt);
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UpdateBox();
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}
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else if (m_eMode == mResize)
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{
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// in resize mode, resize the label along the mouse move from the origin
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QPointF pt = m_ptStartPos;
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rectBB.setTopLeft(pt);
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QSizeF sz(m_szStart.width() + ptDiff.x(), m_szStart.height() + ptDiff.y());
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rectBB.setSize(sz);
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// before resizing the label to a new size, check if it will still be inside the parent item
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if (IsContained(rectBB, rotation(), dX, dY) == false)
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{
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sz = QSizeF(sz.width()+dX, sz.height()+dY);
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}
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SetSize(sz.width(), sz.height());
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Update();
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emit SignalShrink();
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}
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else if (m_eMode == mRotate)
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{
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// if the angle from the original position is small (0.5 degrees), just remeber the new angle
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// new angle will be the starting angle for rotation
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if (fabs(m_dAngle) < 0.01)
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{
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m_dAngle = GetAngle(pME->scenePos());
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return;
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}
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// calculate the angle difference from the starting angle
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double dAng = qRadiansToDegrees(GetAngle(pME->scenePos()) - m_dAngle);
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rectBB.setTopLeft(m_ptStartPos);
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rectBB.setWidth(m_rectBoundingBox.width());
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rectBB.setHeight(m_rectBoundingBox.height());
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// check if the rotated label will be inside the parent item and then rotate it
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if (IsContained(rectBB, m_dRotation + dAng, dX, dY) == true)
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{
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setRotation(m_dRotation + dAng);
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Update();
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VTextGraphicsItem::mouseReleaseEvent handles left button mouse release events
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* @param pME pointer to QGraphicsSceneMouseEvent object
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*/
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void VTextGraphicsItem::mouseReleaseEvent(QGraphicsSceneMouseEvent* pME)
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{
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if (pME->button() == Qt::LeftButton)
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{
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// restore the cursor
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if (m_eMode == mMove || m_eMode == mRotate)
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{
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RestoreOverrideCursor(cursorArrowCloseHand);
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}
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else if (m_eMode == mResize)
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{
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RestoreOverrideCursor(Qt::SizeFDiagCursor);
|
|
}
|
|
double dDist = fabs(pME->scenePos().x() - m_ptStart.x()) + fabs(pME->scenePos().y() - m_ptStart.y());
|
|
// determine if this was just press/release (bShort == true) or user did some operation between press and release
|
|
bool bShort = (dDist < 2);
|
|
|
|
if (m_eMode == mMove || m_eMode == mResize)
|
|
{ // if user just pressed and released the button, we must switch the mode to rotate
|
|
// but if user did some operation (move/resize), emit the proper signal and update the label
|
|
if (bShort == true)
|
|
{
|
|
if (m_bReleased == true)
|
|
{
|
|
m_eMode = mRotate;
|
|
UpdateBox();
|
|
}
|
|
}
|
|
else if (m_eMode == mMove)
|
|
{
|
|
emit SignalMoved(pos());
|
|
UpdateBox();
|
|
}
|
|
else
|
|
{
|
|
emit SignalResized(m_rectBoundingBox.width(), m_tm.GetFont().pixelSize());
|
|
Update();
|
|
}
|
|
}
|
|
else
|
|
{ // in rotate mode, if user did just press/release, switch to move mode
|
|
if (bShort == true)
|
|
{
|
|
m_eMode = mMove;
|
|
UpdateBox();
|
|
}
|
|
else
|
|
{
|
|
// if user rotated the item, emit proper signal and update the label
|
|
emit SignalRotated(rotation());
|
|
UpdateBox();
|
|
}
|
|
}
|
|
m_bReleased = true;
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::hoverMoveEvent checks if cursor has to be changed
|
|
* @param pHE pointer to the scene hover event
|
|
*/
|
|
void VTextGraphicsItem::hoverMoveEvent(QGraphicsSceneHoverEvent* pHE)
|
|
{
|
|
if (m_eMode == mMove || m_eMode == mResize)
|
|
{
|
|
if (m_rectResize.contains(pHE->pos()) == true)
|
|
{
|
|
SetOverrideCursor(Qt::SizeFDiagCursor);
|
|
}
|
|
else
|
|
{
|
|
RestoreOverrideCursor(Qt::SizeFDiagCursor);
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::hoverLeaveEvent tries to restore normal mouse cursor
|
|
* @param pHE not used
|
|
*/
|
|
void VTextGraphicsItem::hoverLeaveEvent(QGraphicsSceneHoverEvent* pHE)
|
|
{
|
|
Q_UNUSED(pHE);
|
|
RestoreOverrideCursor(Qt::SizeFDiagCursor);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::UpdateBox redraws the label content
|
|
*/
|
|
void VTextGraphicsItem::UpdateBox()
|
|
{
|
|
update(m_rectBoundingBox);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::UpdateFont sets the text font size, so that the entire text will
|
|
* just fit into the label bounding box
|
|
*/
|
|
void VTextGraphicsItem::CorrectLabel()
|
|
{
|
|
qreal dX;
|
|
qreal dY;
|
|
QRectF rectBB;
|
|
rectBB.setTopLeft(pos());
|
|
rectBB.setSize(m_rectBoundingBox.size());
|
|
if (IsContained(rectBB, rotation(), dX, dY) == false)
|
|
{
|
|
// put the label inside the pattern
|
|
setPos(pos().x() + dX, pos().y() + dY);
|
|
}
|
|
m_tm.FitFontSize(m_rectBoundingBox.width(), m_rectBoundingBox.height());
|
|
UpdateBox();
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::GetAngle calculates the angle between the line, which goes from
|
|
* rotation center to pt and x axis
|
|
* @param pt point of interest
|
|
* @return the angle between line from rotation center and point of interest and x axis
|
|
*/
|
|
double VTextGraphicsItem::GetAngle(QPointF pt) const
|
|
{
|
|
double dX = pt.x() - m_ptRotCenter.x();
|
|
double dY = pt.y() - m_ptRotCenter.y();
|
|
|
|
if (fabs(dX) < 1 && fabs(dY) < 1)
|
|
{
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return qAtan2(dY, dX);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VTextGraphicsItem::GetBoundingRect calculates the bounding box
|
|
* around rectBB rectangle, rotated around its center by dRot degrees
|
|
* @param rectBB rectangle of interest
|
|
* @param dRot rectangle rotation
|
|
* @return bounding box around rectBB rotated by dRot
|
|
*/
|
|
QRectF VTextGraphicsItem::GetBoundingRect(QRectF rectBB, qreal dRot) const
|
|
{
|
|
QPointF apt[4] = { rectBB.topLeft(), rectBB.topRight(), rectBB.bottomLeft(), rectBB.bottomRight() };
|
|
QPointF ptCenter = rectBB.center();
|
|
|
|
qreal dX1 = 0;
|
|
qreal dX2 = 0;
|
|
qreal dY1 = 0;
|
|
qreal dY2 = 0;
|
|
|
|
double dAng = qDegreesToRadians(dRot);
|
|
for (int i = 0; i < 4; ++i)
|
|
{
|
|
QPointF pt = apt[i] - ptCenter;
|
|
qreal dX = pt.x()*cos(dAng) + pt.y()*sin(dAng);
|
|
qreal dY = -pt.x()*sin(dAng) + pt.y()*cos(dAng);
|
|
|
|
if (i == 0)
|
|
{
|
|
dX1 = dX2 = dX;
|
|
dY1 = dY2 = dY;
|
|
}
|
|
else
|
|
{
|
|
if (dX < dX1)
|
|
{
|
|
dX1 = dX;
|
|
}
|
|
else if (dX > dX2)
|
|
{
|
|
dX2 = dX;
|
|
}
|
|
if (dY < dY1)
|
|
{
|
|
dY1 = dY;
|
|
}
|
|
else if (dY > dY2)
|
|
{
|
|
dY2 = dY;
|
|
}
|
|
}
|
|
}
|
|
QRectF rect;
|
|
rect.setTopLeft(ptCenter + QPointF(dX1, dY1));
|
|
rect.setWidth(dX2 - dX1);
|
|
rect.setHeight(dY2 - dY1);
|
|
return rect;
|
|
}
|