How to make a SVG at tab Widget ?

[RiceBall]

@mrjj said in How to make a SVG at tab Widget ?:

Hi
I assume you want to use the one you put in the tab ?

QGraphicsView view(scene);
view.show();

ui->graphicsView->setScene(scene);

Thank you for your reply.
It looks like have loading something.

But as you say , I think it just only show one moment.
Where is wrong?

[Devopia53]

@RiceBall

like this:

graphicsView->scene()->addWidget(new QSvgWidget(":/your.svg"));

[RiceBall]

@Devopia53 said in How to make a SVG at tab Widget ?:

@RiceBall

like this:

graphicsView->scene()->addWidget(new QSvgWidget(":/your.svg"));

Thank you for your reply.
I try to fix it.
But it show following message.

[Devopia53]

@RiceBall

first, in .pro

QT += svg

and then add

#include <QSvgWidget>

[Pradeep P N]

@RiceBall
Add QT += svg in .pro file

Refer Rendering SVG Files

[RiceBall]

@Devopia53
@Pradeep-P-N said in How to make a SVG at tab Widget ?:

@RiceBall
Add QT += svg in .pro file

Refer Rendering SVG Files

I try to fix it.
It almost pass all compile.
But it show "The process was ended forcefully."

[jsulm]

@RiceBall said in How to make a SVG at tab Widget ?:

But it show "The process was ended forcefully."

Please debug and tell us where exactly it crashes...

[RiceBall]

@jsulm said in How to make a SVG at tab Widget ?:

@RiceBall said in How to make a SVG at tab Widget ?:

But it show "The process was ended forcefully."

Please debug and tell us where exactly it crashes...

[jsulm]

@RiceBall Please show the whole content of your MainWindow constructor, especially line 31.
I guess it is the one you posted in a screen-shot before? It would be helpful if you would simply copy/paste the code instead of posting screen-shots.
It looks like your scene was not yet initialised.

[RiceBall]

@jsulm said in How to make a SVG at tab Widget ?:

@RiceBall Please show the whole content of your MainWindow constructor, especially line 31.
I guess it is the one you posted in a screen-shot before? It would be helpful if you would simply copy/paste the code instead of posting screen-shots.
It looks like your scene was not yet initialised.

I tried to simple it.
But the problem is the same.

.
mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtGlobal>
#include <QMovie>
#include <QSvgWidget>
#include <QPixmap>
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <QGraphicsView>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

   ui->graphicsView->scene()->addWidget(new QSvgWidget("../untitled6/splash1.svg"));

}

MainWindow::~MainWindow()
{
    delete ui;
}

[jsulm]

@RiceBall Did you set the scene?
https://doc.qt.io/qt-5/qgraphicsview.html#setScene

[RiceBall]

@jsulm said in How to make a SVG at tab Widget ?:

@RiceBall Did you set the scene?
https://doc.qt.io/qt-5/qgraphicsview.html#setScene

No.I don't set any scene.
Should I need to set it by " QGraphicsScene scene " at mainwindow.cpp ??? Or Not ?

[jsulm]

@RiceBall Well https://doc.qt.io/qt-5/qgraphicsview.html#scene says
"Returns a pointer to the scene that is currently visualized in the view. If no scene is currently visualized, 0 is returned."
I would say you have to set a scene as shown here https://doc.qt.io/qt-5/qgraphicsview.html

QGraphicsScene scene;
scene.addText("Hello, world!");

QGraphicsView view(&scene); // use setScene() instead
view.show();

[RiceBall]

@jsulm said in How to make a SVG at tab Widget ?:

@RiceBall Well https://doc.qt.io/qt-5/qgraphicsview.html#scene says
"Returns a pointer to the scene that is currently visualized in the view. If no scene is currently visualized, 0 is returned."
I would say you have to set a scene as shown here https://doc.qt.io/qt-5/qgraphicsview.html

QGraphicsScene scene;
scene.addText("Hello, world!");

QGraphicsView view(&scene); // use setScene() instead
view.show();

I try to fix it as your recommend.
But it will shown "no viable conversion from 'QGraphicsScene' to ' QGraphicsScene *'"
Where should I need to change ?

[Pradeep P N]

@RiceBall said in How to make a SVG at tab Widget ?:

'QGraphicsScene' to ' QGraphicsScene *'"

Please try ui->graphicView->setScene(&scene);

[mrjj]

Hi
Please notice you are killing the scene very fast.
Make it a member of the class.
Should live in class so it dont go out of scope,

[jsulm]

@RiceBall Please think about what you're doing instead of blindly copy/paste code snippets which meant to be simple examples.
First: don't create the scene on the stack!
Second: pass pointer to setScene (the error message actually tells you what is wrong).

[RiceBall]

@Pradeep-P-N said in How to make a SVG at tab Widget ?:

@RiceBall said in How to make a SVG at tab Widget ?:

'QGraphicsScene' to ' QGraphicsScene *'"

Please try ui->graphicView->setScene(&scene);

I success to show it finally.
Thanks @jsulm @Pradeep-P-N @mrjj help.

Key Point
.pro

QT       += svg 

final code

    QGraphicsScene *scene = new QGraphicsScene;
    scene->addWidget(new QSvgWidget("../untitled6/splash1.svg"));
    scene->addWidget(new QSvgWidget("../untitled6/splash2.svg"));

    ui->graphicsView->setScene(scene);

[RiceBall]

@RiceBall said in How to make a SVG at tab Widget ?:

@Pradeep-P-N said in How to make a SVG at tab Widget ?:

@RiceBall said in How to make a SVG at tab Widget ?:

'QGraphicsScene' to ' QGraphicsScene *'"

Please try ui->graphicView->setScene(&scene);

I success to show it finally.
Thanks @jsulm @Pradeep-P-N @mrjj help.

Key Point
.pro

QT       += svg 

final code

    QGraphicsScene *scene = new QGraphicsScene;
    scene->addWidget(new QSvgWidget("../untitled6/splash1.svg"));
    scene->addWidget(new QSvgWidget("../untitled6/splash2.svg"));

    ui->graphicsView->setScene(scene);

Hello every one
I meet a new easy problem.
How could I define the scene size & transparent....?

[Pradeep P N]

Hi @RiceBall

Scene size please check minimumRenderSize.

QWidget has an option to set the windowOpacity.

Below is sample code for defining the size and transparency...

QGraphicsView *gView = new QGraphicsView(this);
QGraphicsScene *scene = new QGraphicsScene;

QSvgWidget *svgWid = new QSvgWidget(":/Freesample.svg");
svgWid->setWindowOpacity(0.5); // Change as needed
scene->addWidget(svgWid);

gView->resize(350, 350);
gView->setScene(scene);

Output:

Opacity : 0.5

Without Opacity:

All the best.