icons on image

[yuvaraj.yadav]

Hi

How do display icons on image, when i am moving curser on image..


please suggest me to set icons on image



Thanks

Yuvaraj R

[spirit]

have a look at QPainter::drawImage or QPainter::drawPixmap.

[yuvaraj.yadav]

Hi

Just had gone through that one...



can anybody post the sample code here


Thanks

Yuvaraj R

[spirit]

you should write something like this

...
QPixmap pixmap(100, 100);
QPixmap icon("incon.png");
 
QRectF target(10.0, 20.0, 80.0, 60.0);
QRectF source(0.0, 0.0, 70.0, 40.0);
 
QPainter painter(&pixmap);
painter.drawPixmap(target, icon, source);
...

...
QPixmap pixmap(100, 100);
QPixmap icon("incon.png");

QRectF target(10.0, 20.0, 80.0, 60.0);
QRectF source(0.0, 0.0, 70.0, 40.0);

QPainter painter(&pixmap);
painter.drawPixmap(target, icon, source);
...

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[yuvaraj.yadav]

Don't mistake me


How do i run this code



Thanks
yuvaraj

[spirit]

like this

#include <QtGui>
#include <QApplication>
 
int main(int argc, char **argv)
{
	QApplication app(argc, argv);
 
	QPixmap pixmap("image.png");
	QPixmap icon("test.png");
 
	QPainter painter(&pixmap);
	painter.drawPixmap(QPoint(10, 10), icon);
 
	QLabel label;
	label.setPixmap(pixmap);
	label.show();
 
	return app.exec();
}

#include <QtGui>
#include <QApplication>

int main(int argc, char **argv)
{
	QApplication app(argc, argv);

	QPixmap pixmap("image.png");
	QPixmap icon("test.png");

	QPainter painter(&pixmap);
	painter.drawPixmap(QPoint(10, 10), icon);

	QLabel label;
	label.setPixmap(pixmap);
	label.show();

	return app.exec();
}

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[yuvaraj.yadav]

Hi

Thanks spirit


How can i set the icons ,it si visible only when curser is moving on image


Please suggest me


Thanks

Yuvaraj

R

[spirit]

use code above in mouseMove or keyPressEvent.

[yuvaraj.yadav]

thanks for your reply


can i set actions for label to display that

[aamer4yu]

Dont mistake me, but do you use Qt Assistant ? or see Qt Demos ?

As for your problem, you could use a QToolButtonor QPushButton, and set the icon when mouse is over it. You will need to subclass them, and as spirit said, override the mouse events.

If you are using label, you could make button as a child of label, and show/hide when the user hovers over a given area. For this too, you will need to subclass QLabel

[yuvaraj.yadav]

Hi

I can we display the image using push button and tool button

[aamer4yu]

Read documentation for QToolButtonand QPushButton

[yuvaraj.yadav]

Hi
Thanks for your reply..

I thing is different...


Initially i am showing one image using

this code

ui->mylabel->setPixmap(QPixmap("yuvaraj.png"));

ui->mylabel->setPixmap(QPixmap("yuvaraj.png"));

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then when i am moving the curser on image , that 4 icons will be displaying on image that time..

Here i have used the label to display my image ...But label doesn't have mouse over,click event options.

How can i do this


Don't mistake me ,i am a beginner..

Please suggest me

Thanks

Yuvaraj R

[spirit]

set setMouseTracking in true for a label and then process mouseMoveEvent of the label.

[yuvaraj.yadav]

That one problem of mine..

If click the slot options for label ,it is showng only 5 options,,,

like

1) link activated
2) link hy..
3) destroyed
4) destroyed(QObject *)
5)costumcontextmenu required...

I don't get slots like mouseover, clicked like that...

That why i am struggling.....

please suggest me


Thanks

Yuvaraj R

[spirit]

yes, there is no such slot like mouseOver, you have to process QMouseEvent.

[yuvaraj.yadav]

hi

My code for mouse over event

bool mouseover()
{
  if(QPoint(10,10)
  {
    return TRUE; QPixmap pixmap("image.png");
    QPixmap icon("test.png");
 
    QPainter painter(&pixmap);
    painter.drawPixmap(QPoint(10, 10), icon);
 
    QLabel label;
    label.setPixmap(pixmap);
    label.show();
}
else
{
 return FALSE;
}
}

bool mouseover()
{
  if(QPoint(10,10)
  {
    return TRUE; QPixmap pixmap("image.png");
    QPixmap icon("test.png");
 
    QPainter painter(&pixmap);
    painter.drawPixmap(QPoint(10, 10), icon);
 
    QLabel label;
    label.setPixmap(pixmap);
    label.show();
}
else
{
 return FALSE;
}
}

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But it is not working , i think my problem is in condition....

I have another doubt...

if mouse satisfied the position of image ,how do display the icons on image,

Is it using the push button, tool button. I need that icons should in event...

please suggest me

Thanks

Yuvaraj R

[spirit]

you never reach this code

...
    QPixmap pixmap("image.png");
    QPixmap icon("test.png");
 
    QPainter painter(&pixmap);
    painter.drawPixmap(QPoint(10, 10), icon);
 
    QLabel label;
    label.setPixmap(pixmap);
    label.show();
...

...
    QPixmap pixmap("image.png");
    QPixmap icon("test.png");
 
    QPainter painter(&pixmap);
    painter.drawPixmap(QPoint(10, 10), icon);
 
    QLabel label;
    label.setPixmap(pixmap);
    label.show();
...

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because return true; is located in a wrong place
try this

bool mouseover()
{
    if(QPoint(10,10)) {
            QPixmap pixmap("image.png");
            QPixmap icon("test.png");
 
            QPainter painter(&pixmap);
            painter.drawPixmap(QPoint(10, 10), icon);
 
            QLabel label;
            label.setPixmap(pixmap);
            label.show();
            return TRUE;
    }
    return FALSE;
}

bool mouseover()
{
    if(QPoint(10,10)) {
            QPixmap pixmap("image.png");
            QPixmap icon("test.png");
 
            QPainter painter(&pixmap);
            painter.drawPixmap(QPoint(10, 10), icon);
 
            QLabel label;
            label.setPixmap(pixmap);
            label.show();
            return TRUE;
    }
    return FALSE;
}

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[yuvaraj.yadav]

But it is giving error in main program

My main program code is

#include <QtGui/QApplication>
#include "widget.h"
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

#include <QtGui/QApplication>
#include "widget.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

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the errors is

E:/Qt Programs/yuvaraj/main.cpp:10: error: expected `}' at end of input


E:/Qt Programs/yuvaraj/main.cpp:10: error: expected unqualified-id at end of input

[spirit]

can you attach your project?