brazzn
9th August 2017, 04:24
I am using a developer defined QGraphicsScene pointer from the "dialog/mainwindow" class called wavesScene to return a QList of QGraphicsItem*'s using QGraphicsScene::items. Something seems to be wrong with my syntax, it says that the list "graphicsItemList" is never used/declared.
Here is my code, any ideas as to how I would properly implement this methodology
relevant code inside mainwindow/segyView.h
QGraphicsScene *wavesScene;
Constructor code *I think, may be called something different
SEGYView::SEGYView(QWidget *parent)
:QMainWindow(parent),
ui(new Ui::SEGYView)
{
ui->setupUi(this);
wavesScene = new QGraphicsScene(this);
ui->PixmapView->setScene(wavesScene);
}
Code inside slider_value_changed() slot
QList<QGraphicsItem*> graphicsItemList(wavesScene->items());
QGraphicsPixmapItem pixmapItem(graphicsItemList.at(0));
QPixmap wavesPixmap = pixmapItem.pixmap();
QPixmap wavesPixmapScaled = wavesPixmap.scaled((newSliderValue*INITIAL_WAVES_P IXMAP_X_SIZE), 1250);
pixmapItem.setPixmap((wavesPixmapScaled));
wavesScene->addItem(&pixmapItem);
relevant code inside actionOpen on triggered() slot
wavesScene->addItem(pixmapGraphicsItem);
ui->PixmapView->setScene(wavesScene);
Error is "graphicsItemList" was not declared in this scope QGraphicsPixmapItem* pixmapItem = graphicsItemList.at(0);
^
Here is my code, any ideas as to how I would properly implement this methodology
relevant code inside mainwindow/segyView.h
QGraphicsScene *wavesScene;
Constructor code *I think, may be called something different
SEGYView::SEGYView(QWidget *parent)
:QMainWindow(parent),
ui(new Ui::SEGYView)
{
ui->setupUi(this);
wavesScene = new QGraphicsScene(this);
ui->PixmapView->setScene(wavesScene);
}
Code inside slider_value_changed() slot
QList<QGraphicsItem*> graphicsItemList(wavesScene->items());
QGraphicsPixmapItem pixmapItem(graphicsItemList.at(0));
QPixmap wavesPixmap = pixmapItem.pixmap();
QPixmap wavesPixmapScaled = wavesPixmap.scaled((newSliderValue*INITIAL_WAVES_P IXMAP_X_SIZE), 1250);
pixmapItem.setPixmap((wavesPixmapScaled));
wavesScene->addItem(&pixmapItem);
relevant code inside actionOpen on triggered() slot
wavesScene->addItem(pixmapGraphicsItem);
ui->PixmapView->setScene(wavesScene);
Error is "graphicsItemList" was not declared in this scope QGraphicsPixmapItem* pixmapItem = graphicsItemList.at(0);
^