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OpenBoard/src/domain/UBGraphicsTextItem.cpp

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/*
* Copyright (C) 2012 Webdoc SA
*
* This file is part of Open-Sankoré.
*
* Open-Sankoré 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* Open-Sankoré 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 Open-Sankoré. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QtGui>
#include "UBGraphicsGroupContainerItem.h"
#include "UBGraphicsTextItem.h"
#include "UBGraphicsTextItemDelegate.h"
#include "UBGraphicsScene.h"
#include "UBGraphicsDelegateFrame.h"
#include "core/UBApplication.h"
#include "board/UBBoardController.h"
#include "board/UBBoardView.h"
#include "board/UBDrawingController.h"
#include "core/UBSettings.h"
#include "core/memcheck.h"
QColor UBGraphicsTextItem::lastUsedTextColor;
UBGraphicsTextItem::UBGraphicsTextItem(QGraphicsItem * parent) :
QGraphicsTextItem(parent)
, UBGraphicsItem()
, mMultiClickState(0)
, mLastMousePressTime(QTime::currentTime())
{
setDelegate(new UBGraphicsTextItemDelegate(this, 0));
Delegate()->init();
Delegate()->frame()->setOperationMode(UBGraphicsDelegateFrame::Resizing);
Delegate()->setFlippable(false);
Delegate()->setRotatable(true);
mTypeTextHereLabel = tr("<Type Text Here>");
setData(UBGraphicsItemData::ItemLayerType, UBItemLayerType::Object);
setData(UBGraphicsItemData::itemLayerType, QVariant(itemLayerType::ObjectItem)); //Necessary to set if we want z value to be assigned correctly
setFlag(QGraphicsItem::ItemIsSelectable, true);
setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
setTextInteractionFlags(Qt::TextEditorInteraction);
setUuid(QUuid::createUuid());
connect(document(), SIGNAL(contentsChanged()), Delegate(), SLOT(contentsChanged()));
connect(document(), SIGNAL(undoCommandAdded()), this, SLOT(undoCommandAdded()));
connect(document()->documentLayout(), SIGNAL(documentSizeChanged(const QSizeF &)),
this, SLOT(documentSizeChanged(const QSizeF &)));
}
UBGraphicsTextItem::~UBGraphicsTextItem()
{
}
QVariant UBGraphicsTextItem::itemChange(GraphicsItemChange change, const QVariant &value)
{
QVariant newValue = value;
if(Delegate())
newValue = Delegate()->itemChange(change, value);
return QGraphicsTextItem::itemChange(change, newValue);
}
void UBGraphicsTextItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
// scene()->itemAt(pos) returns 0 if pos is not over text, but over text item, but mouse press comes.
// It is a cludge...
if (UBStylusTool::Play == UBDrawingController::drawingController()->stylusTool())
{
event->accept();
clearFocus();
return;
}
if (Delegate())
{
Delegate()->mousePressEvent(event);
if (Delegate() && parentItem() && UBGraphicsGroupContainerItem::Type == parentItem()->type())
{
UBGraphicsGroupContainerItem *group = qgraphicsitem_cast<UBGraphicsGroupContainerItem*>(parentItem());
if (group)
{
QGraphicsItem *curItem = group->getCurrentItem();
if (curItem && this != curItem)
{
group->deselectCurrentItem();
}
group->setCurrentItem(this);
this->setSelected(true);
Delegate()->positionHandles();
}
}
else
{
Delegate()->getToolBarItem()->show();
}
}
if (!data(UBGraphicsItemData::ItemEditable).toBool())
return;
int elapsed = mLastMousePressTime.msecsTo(QTime::currentTime());
if (elapsed < UBApplication::app()->doubleClickInterval())
{
mMultiClickState++;
if (mMultiClickState > 3)
mMultiClickState = 1;
}
else
{
mMultiClickState = 1;
}
mLastMousePressTime = QTime::currentTime();
if (mMultiClickState == 1)
{
// setTextInteractionFlags(Qt::TextEditorInteraction);
QGraphicsTextItem::mousePressEvent(event);
setFocus();
}
else if (mMultiClickState == 2)
{
QTextCursor tc= textCursor();
tc.select(QTextCursor::WordUnderCursor);
setTextCursor(tc);
}
else if (mMultiClickState == 3)
{
QTextCursor tc= textCursor();
tc.select(QTextCursor::Document);
setTextCursor(tc);
}
else
{
mMultiClickState = 0;
}
}
void UBGraphicsTextItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (!Delegate() || !Delegate()->mouseMoveEvent(event))
{
QGraphicsTextItem::mouseMoveEvent(event);
}
}
void UBGraphicsTextItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
// scene()->itemAt(pos) returns 0 if pos is not over text, but over text item, but mouse press comes.
// It is a cludge...
if (UBStylusTool::Play == UBDrawingController::drawingController()->stylusTool())
{
event->accept();
clearFocus();
return;
}
if (mMultiClickState == 1)
{
if (Delegate())
Delegate()->mouseReleaseEvent(event);
QGraphicsTextItem::mouseReleaseEvent(event);
}
else
{
event->accept();
}
}
void UBGraphicsTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
QColor color = UBSettings::settings()->isDarkBackground() ? mColorOnDarkBackground : mColorOnLightBackground;
setDefaultTextColor(color);
// Never draw the rubber band, we draw our custom selection with the DelegateFrame
QStyleOptionGraphicsItem styleOption = QStyleOptionGraphicsItem(*option);
styleOption.state &= ~QStyle::State_Selected;
styleOption.state &= ~QStyle::State_HasFocus;
QGraphicsTextItem::paint(painter, &styleOption, widget);
if (widget == UBApplication::boardController->controlView()->viewport() &&
!isSelected() && toPlainText().isEmpty())
{
painter->setFont(font());
painter->setPen(UBSettings::paletteColor);
painter->drawText(boundingRect(), Qt::AlignCenter, mTypeTextHereLabel);
}
}
UBItem* UBGraphicsTextItem::deepCopy() const
{
UBGraphicsTextItem* copy = new UBGraphicsTextItem();
copyItemParameters(copy);
// TODO UB 4.7 ... complete all members ?
return copy;
}
void UBGraphicsTextItem::copyItemParameters(UBItem *copy) const
{
UBGraphicsTextItem *cp = dynamic_cast<UBGraphicsTextItem*>(copy);
if (cp)
{
cp->setHtml(toHtml());
cp->setPos(this->pos());
cp->setTransform(this->transform());
cp->setFlag(QGraphicsItem::ItemIsMovable, true);
cp->setFlag(QGraphicsItem::ItemIsSelectable, true);
cp->setData(UBGraphicsItemData::ItemLayerType, this->data(UBGraphicsItemData::ItemLayerType));
cp->setData(UBGraphicsItemData::ItemLocked, this->data(UBGraphicsItemData::ItemLocked));
cp->setData(UBGraphicsItemData::ItemEditable, data(UBGraphicsItemData::ItemEditable).toBool());
// cp->setDefaultTextColor(this->defaultTextColor());
// cp->setFont(this->font());
// cp->setColorOnDarkBackground(this->colorOnDarkBackground());
// cp->setColorOnLightBackground(this->colorOnLightBackground());
cp->setTextWidth(this->textWidth());
cp->setTextHeight(this->textHeight());
cp->setSourceUrl(this->sourceUrl());
}
}
QRectF UBGraphicsTextItem::boundingRect() const
{
qreal width = textWidth();
qreal height = textHeight();
return QRectF(QPointF(), QSizeF(width, height));
}
QPainterPath UBGraphicsTextItem::shape() const
{
QPainterPath path;
path.addRect(boundingRect());
return path;
}
void UBGraphicsTextItem::setTextWidth(qreal width)
{
QFontMetrics fm(font());
qreal strictMin = fm.height();
qreal newWidth = qMax(strictMin, width);
if (toPlainText().isEmpty())
{
qreal minWidth = fm.width(mTypeTextHereLabel);
newWidth = qMax(minWidth, newWidth);
}
QGraphicsTextItem::setTextWidth(newWidth);
}
void UBGraphicsTextItem::setTextHeight(qreal height)
{
QFontMetrics fm(font());
qreal minHeight = fm.height() + document()->documentMargin() * 2;
mTextHeight = qMax(minHeight, height);
update();
setFocus();
}
qreal UBGraphicsTextItem::textHeight() const
{
return mTextHeight;
}
void UBGraphicsTextItem::contentsChanged()
{
if (scene())
{
scene()->setModified(true);
}
if (toPlainText().isEmpty())
{
setTextWidth(textWidth());
}
}
UBGraphicsScene* UBGraphicsTextItem::scene()
{
return static_cast<UBGraphicsScene*>(QGraphicsItem::scene());
}
void UBGraphicsTextItem::resize(qreal w, qreal h)
{
setTextWidth(w);
setTextHeight(h);
if (Delegate())
Delegate()->positionHandles();
}
QSizeF UBGraphicsTextItem::size() const
{
return QSizeF(textWidth(), textHeight());
}
void UBGraphicsTextItem::setUuid(const QUuid &pUuid)
{
UBItem::setUuid(pUuid);
setData(UBGraphicsItemData::ItemUuid, QVariant(pUuid)); //store item uuid inside the QGraphicsItem to fast operations with Items on the scene
}
void UBGraphicsTextItem::undoCommandAdded()
{
emit textUndoCommandAdded(this);
}
void UBGraphicsTextItem::documentSizeChanged(const QSizeF & newSize)
{
resize(newSize.width(), newSize.height());
}