[Qt-interest] adding a QGraphicsPixmapItem

[pmqt71]

No, the problem is not in the animate method.

the only statement:
QGraphicsPixmapItem* item = gs->addPixmap(pixmap);
removing the animate stuff,  makes the pixmap appear with a short animation.

I'll attach the source code on a next post...

thanks

pm




>
> 2010/10/22 Malyushytsky, Alex <alex at wai.com>
>
>   You re-implemented  advance().
>>
>> That what caused the item move.
>>
>> Make it do nothing and it will not animate.
>>
>>
>>
>> Alex
>>
>>
>>
>>
>>
>> *From:* pmqt71 [mailto:pmqt71 at gmail.com]
>> *Sent:* Thursday, October 21, 2010 3:43 PM
>> *To:* Malyushytsky, Alex; qt-interest at trolltech.com
>> *Subject:* Re: [Qt-interest] adding a QGraphicsPixmapItem
>>
>>
>>
>> I'm using Qt 4.6.2 on xp, VC++ Express 2008.
>>
>>
>>
>> I partially solved overriding the paint method and drawing the pixmap
>> using the painter:
>>
>> painter->drawPixmap(0, 0, 20, 20, m_pixmap);
>>
>>
>>
>> But I still have the strange problem calling the scene's update method
>> after moving the pixmap:
>>
>>
>>
>> class MyQGraphicsPixmapItem: public QGraphicsPixmapItem
>>
>> {
>>
>> ...
>>
>> void advance(int step)
>>
>> {
>>
>>     if(!step) return;
>>
>>     moveBy(1, 0);
>>
>>
>>
>>     //ok
>>
>>     this->scene()->update();
>>
>>
>>
>>     //nok, the pixmap starts from the scene's center and moves to its
>> position.
>>
>>     //this->scene()->update( 0, 0, 20, 20);
>>
>>
>>
>> }
>>
>> };
>>
>>
>>
>> I'm now searching the documentation to improve the update part, but I'd
>> like to know what causes the strange animation.
>>
>>
>>
>> pm
>>
>>
>>
>> 2010/10/21 Malyushytsky, Alex <alex at wai.com>
>>
>> What version of Qt you are using?
>>
>> That sounds weird, when I use QGraphicsPixmapItem it just displayed at the
>> location it supposed to be .
>>
>>
>>
>> Alex
>>
>>
>>
>> *From:* qt-interest-bounces at trolltech.com [mailto:
>> qt-interest-bounces at trolltech.com] *On Behalf Of *pmqt71
>> *Sent:* Thursday, October 21, 2010 6:17 AM
>> *To:* qt-interest at trolltech.com
>> *Subject:* [Qt-interest] adding a QGraphicsPixmapItem
>>
>>
>>
>> Hi all,
>>
>> adding a QGraphicsPixmapItem on a QGraphicsScene, I see a short animation
>> showing the pixmap moving from the scene's center to the top-right corner.
>>
>> How to disable this effect? I just want the pixmap in the top-right corner
>> of the scene.
>>
>>
>> the statement is:
>> QGraphicsPixmapItem* item = gs->addPixmap(pixmap);
>>
>> thanks
>>
>> pm
>>
>>
>>
>>
>>
>>
>>
>>
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