Doc: compile droprectangle snippets

Done-with: Nico Vertriest <nico.vertriest@qt.io>
Task-number: QTBUG-81486
Change-Id: I0087f7cc0746168bc2223972074fed468c3fba46
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

src/gui/doc/snippets/droprectangle/droprectangle.pro

@@ -1,3 +1,6 @@
-HEADERS     = window.h
-SOURCES     = main.cpp \
-              window.cpp
+TEMPLATE = lib
+TARGET = droprectangle_snippets
+QT += core gui widgets
+
+SOURCES = \
+    window.cpp

src/gui/doc/snippets/droprectangle/window.cpp

@@ -47,44 +47,20 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
+#include <QDragMoveEvent>
+#include <QFrame>
+#include <QMimeData>
+#include <QWidget>
 
-#include <QtGui>
+namespace droprectangle {
 
-#include "window.h"
-
-Window::Window(QWidget *parent)
-    : QWidget(parent)
+struct Window : public QWidget
 {
-    QLabel *textLabel = new QLabel(tr("Data:"), this);
-    textBrowser = new QTextBrowser(this);
+    void dragMoveEvent(QDragMoveEvent *event);
 
-    QLabel *mimeTypeLabel = new QLabel(tr("MIME types:"), this);
-    mimeTypeCombo = new QComboBox(this);
+    QFrame *dropFrame = nullptr;
+};
 
-    dropFrame = new QFrame(this);
-    dropFrame->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
-    QLabel *dropLabel = new QLabel(tr("Drop items here"), dropFrame);
-    dropLabel->setAlignment(Qt::AlignHCenter);
-
-    QVBoxLayout *dropFrameLayout = new QVBoxLayout(dropFrame);
-    dropFrameLayout->addWidget(dropLabel);
-
-    QHBoxLayout *dropLayout = new QHBoxLayout;
-    dropLayout->addStretch(0);
-    dropLayout->addWidget(dropFrame);
-    dropLayout->addStretch(0);
-
-    QVBoxLayout *mainLayout = new QVBoxLayout(this);
-    mainLayout->addWidget(textLabel);
-    mainLayout->addWidget(textBrowser);
-    mainLayout->addWidget(mimeTypeLabel);
-    mainLayout->addWidget(mimeTypeCombo);
-    mainLayout->addSpacing(32);
-    mainLayout->addLayout(dropLayout);
-
-    setAcceptDrops(true);
-    setWindowTitle(tr("Drop Rectangle"));
-}
 
 //! [0]
 void Window::dragMoveEvent(QDragMoveEvent *event)
@@ -96,11 +72,5 @@ void Window::dragMoveEvent(QDragMoveEvent *event)
 }
 //! [0]
 
-void Window::dropEvent(QDropEvent *event)
-{
-    textBrowser->setPlainText(event->mimeData()->text());
-    mimeTypeCombo->clear();
-    mimeTypeCombo->addItems(event->mimeData()->formats());
 
-    event->acceptProposedAction();
-}
+} // droprectangle

src/gui/doc/snippets/snippets.pro

@@ -9,6 +9,7 @@ contains(QT_BUILD_PARTS, tests) {
         draganddrop \
         droparea \
         dropevents \
+        droprectangle \
         qfontdatabase \
         textblock-formats \
         textblock-fragments \