From a426326e99a76a92c8d0c870e19c67311a434483 Mon Sep 17 00:00:00 2001
From: Nico Vertriest <nico.vertriest@qt.io>
Date: Mon, 3 Feb 2020 15:49:30 +0100
Subject: Doc: Make snippets Qt Widgets compilable
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Removed mainwindowsnippet.cpp and widgetdelegate.cpp
from snippets.pro

Task-number: QTBUG-81497
Change-Id: I40d1f34e64d958d2fb857dc8e468b9c40fff527c
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
---
 src/widgets/doc/snippets/graphicsview.cpp | 64 ++++++++++++++++++++-----------
 1 file changed, 41 insertions(+), 23 deletions(-)

(limited to 'src/widgets/doc/snippets/graphicsview.cpp')

diff --git a/src/widgets/doc/snippets/graphicsview.cpp b/src/widgets/doc/snippets/graphicsview.cpp
index 9578f91eec..6262137c90 100644
--- a/src/widgets/doc/snippets/graphicsview.cpp
+++ b/src/widgets/doc/snippets/graphicsview.cpp
@@ -47,53 +47,70 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-
+#include <QGraphicsView>
+#include <QOpenGLWidget>
+#include <QPrinter>
+#include <QPrintDialog>
+#include <QStandardItem>
+#include <QMimeData>
+#include <QDrag>
+#include <QGraphicsSceneMouseEvent>
+
+int main()
+{
 //! [0]
 QGraphicsScene scene;
 QGraphicsRectItem *rect = scene.addRect(QRectF(0, 0, 100, 100));
 
-QGraphicsItem *item = scene.itemAt(50, 50);
-// item == rect
+QGraphicsItem *item = scene.itemAt(50, 50, QTransform());
 //! [0]
+Q_UNUSED(rect);
+Q_UNUSED(item);
+}
 
+void myPopulateScene(QGraphicsScene *)
+{
+    // Intentionally left empty
+}
 
+void snippetThatUsesMyPopulateScene()
+{
 //! [1]
 QGraphicsScene scene;
 myPopulateScene(&scene);
-
 QGraphicsView view(&scene);
 view.show();
 //! [1]
+}
 
-
-//! [2]
-class View : public QGraphicsView
+class CustomItem : public QStandardItem
 {
-Q_OBJECT
-    ...
-public slots:
-    void zoomIn() { scale(1.2, 1.2); }
-    void zoomOut() { scale(1 / 1.2, 1 / 1.2); }
-    void rotateLeft() { rotate(-10); }
-    void rotateRight() { rotate(10); }
-    ...
+public:
+    using QStandardItem::QStandardItem;
+
+    int type() const override { return UserType; }
+    void mousePressEvent(QGraphicsSceneMouseEvent *event);
+    QStandardItem *clone() const override { return new CustomItem; }
 };
-//! [2]
 
 
+void printScene()
+{
 //! [3]
 QGraphicsScene scene;
+QPrinter printer;
 scene.addRect(QRectF(0, 0, 100, 200), QPen(Qt::black), QBrush(Qt::green));
 
-QPrinter printer;
 if (QPrintDialog(&printer).exec() == QDialog::Accepted) {
     QPainter painter(&printer);
     painter.setRenderHint(QPainter::Antialiasing);
     scene.render(&painter);
 }
 //! [3]
+}
 
-
+void pixmapScene()
+{
 //! [4]
 QGraphicsScene scene;
 scene.addRect(QRectF(0, 0, 100, 200), QPen(Qt::black), QBrush(Qt::green));
@@ -106,21 +123,21 @@ painter.end();
 
 pixmap.save("scene.png");
 //! [4]
-
+}
 
 //! [5]
 void CustomItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
     QMimeData *data = new QMimeData;
-    data->setColor(Qt::green);
-
     QDrag *drag = new QDrag(event->widget());
     drag->setMimeData(data);
-    drag->start();
+    drag->exec();
 }
 //! [5]
 
-
+void viewScene()
+{
+QGraphicsScene scene;
 //! [6]
 QGraphicsView view(&scene);
 QOpenGLWidget *gl = new QOpenGLWidget();
@@ -129,3 +146,4 @@ format.setSamples(4);
 gl->setFormat(format);
 view.setViewport(gl);
 //! [6]
+}
-- 
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