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Add a class based on QGraphicsSimpleTextItem that handles animations.

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This commit adds a class based on QGraphicsSimpleTextItem that
handls animations via animatedHide() animatedMoveTo() and a few
other QPropertyes. This is to be used in conjunction with the
DiveLineItem added in the past commit on the Coordinate Axis.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Tomaz Canabrava 2014-01-14 15:23:57 -02:00 committed by Dirk Hohndel
parent d47456b4e8
commit 408b7dd5e5
3 changed files with 80 additions and 2 deletions
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54
qt-ui/profile/divetextitem.cpp Normal file
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@ -0,0 +1,54 @@
#include "divetextitem.h"
#include <QPropertyAnimation>
DiveTextItem::DiveTextItem(QGraphicsItem* parent): QGraphicsSimpleTextItem(parent)
{
setFlag(ItemIgnoresTransformations);
}
void DiveTextItem::setAlignment(int alignFlags)
{
internalAlignFlags = alignFlags;
update();
}
void DiveTextItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
/* This block of code corrects paints the Text on the
* alignment choosed, but it created artifacts on the screen,
* so I'm leaving this disabled for the time being.
*/
// QRectF rect = boundingRect();
// if (internalAlignFlags & Qt::AlignTop)
// painter->translate(0, -rect.height());
// // else if (internalAlignFlags & Qt::AlignBottom)
// // painter->translate(0, rect.height()); this is the default, uneeded.
// else if (internalAlignFlags & Qt::AlignVCenter)
// painter->translate(0, -rect.height() / 2);
//
// // if (internalAlignFlags & Qt::AlignLeft )
// // painter->translate(); // This is the default, uneeded.
// if(internalAlignFlags & Qt::AlignHCenter)
// painter->translate(-rect.width()/2, 0);
// else if(internalAlignFlags & Qt::AlignRight)
// painter->translate(-rect.width(), 0);
QGraphicsSimpleTextItem::paint(painter, option, widget);
}
void DiveTextItem::animatedHide()
{
QPropertyAnimation *animation = new QPropertyAnimation(this, "opacity");
connect(animation, SIGNAL(finished()), SLOT(deleteLater()));
animation->setStartValue(1);
animation->setEndValue(0);
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
void DiveTextItem::animateMoveTo(qreal x, qreal y)
{
QPropertyAnimation *animation = new QPropertyAnimation(this, "pos");
animation->setStartValue(property("pos").toPointF());
animation->setEndValue(QPointF(x, y));
animation->start(QAbstractAnimation::DeleteWhenStopped);
}

22
qt-ui/profile/divetextitem.h Normal file
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@ -0,0 +1,22 @@
#ifndef DIVETEXTITEM_H
#define DIVETEXTITEM_H
#include <QObject>
#include <QGraphicsSimpleTextItem>
/* A Line Item that has animated-properties. */
class DiveTextItem :public QObject, public QGraphicsSimpleTextItem{
Q_OBJECT
Q_PROPERTY(QPointF pos READ pos WRITE setPos)
Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity)
public:
DiveTextItem(QGraphicsItem* parent = 0);
virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget);
void setAlignment(int alignFlags);
void animatedHide();
void animateMoveTo(qreal x, qreal y);
private:
int internalAlignFlags;
};
#endif

6
subsurface.pro
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@ -66,7 +66,8 @@ HEADERS = \
qt-ui/profile/profilewidget2.h \
qt-ui/profile/diverectitem.h \
qt-ui/profile/divepixmapitem.h \
qt-ui/profile/divelineitem.h
qt-ui/profile/divelineitem.h \
qt-ui/profile/divetextitem.h
SOURCES = \
deco.c \
@ -120,7 +121,8 @@ SOURCES = \
qt-ui/profile/profilewidget2.cpp \
qt-ui/profile/diverectitem.cpp \
qt-ui/profile/divepixmapitem.cpp \
qt-ui/profile/divelineitem.cpp
qt-ui/profile/divelineitem.cpp \
qt-ui/profile/divetextitem.cpp
linux*: SOURCES += linux.c
mac: SOURCES += macos.c