Doc: Compile coordinate system snippets

Fix minor issues (e.g. whitespace, missing semi-colon) in passing.

Change-Id: I8b765c2d2889cae91543c865f3b9df845ef6205b
Done-with: Nico Vertriest <nico.vertriest@qt.io>
Task-number: QTBUG-81486
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

src/gui/doc/snippets/code/code.pro

@@ -3,5 +3,6 @@ TARGET = code_snippets
 QT += core gui widgets
 
 SOURCES = \
-    doc_src_richtext.cpp
+    doc_src_coordsys.cpp \
+    doc_src_richtext.cpp \
     src_gui_accessible_qaccessible.cpp

src/gui/doc/snippets/code/doc_src_coordsys.cpp

@@ -47,6 +47,21 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
+#include <QPainter>
+#include <QWidget>
+
+namespace doc_src_coordsys {
+struct SnippetWrappers : public QWidget
+{
+    void wrapper0();
+    void wrapper1();
+    void wrapper2();
+    void wrapper3();
+    void wrapper4();
+};
+
+
+void SnippetWrappers::wrapper0() {
 
 //! [0]
 QPainter painter(this);
@@ -56,6 +71,10 @@ painter.setPen(Qt::darkGreen);
 painter.drawRect(1, 2, 6, 4);
 //! [0]
 
+} // wrapper0
+
+
+void SnippetWrappers::wrapper1() {
 
 //! [1]
 QPainter painter(this);
@@ -64,6 +83,10 @@ painter.setPen(Qt::darkGreen);
 painter.drawLine(2, 7, 6, 1);
 //! [1]
 
+} // wrapper2
+
+
+void SnippetWrappers::wrapper2() {
 
 //! [2]
 QPainter painter(this);
@@ -74,6 +97,10 @@ painter.setPen(Qt::darkGreen);
 painter.drawRect(1, 2, 6, 4);
 //! [2]
 
+} // wrapper2
+
+
+void SnippetWrappers::wrapper3() {
 
 //! [3]
 QPainter painter(this);
@@ -83,6 +110,10 @@ painter.setPen(Qt::darkGreen);
 painter.drawLine(2, 7, 6, 1);
 //! [3]
 
+} // wrapper3
+
+
+void SnippetWrappers::wrapper4() {
 
 //! [4]
 QPainter painter(this);
@@ -91,9 +122,13 @@ painter.setWindow(QRect(-50, -50, 100, 100));
 
 
 //! [5]
-int side = qMin(width(), height())
+int side = qMin(width(), height());
 int x = (width() - side / 2);
 int y = (height() - side / 2);
 
 painter.setViewport(x, y, side, side);
 //! [5]
+
+} // wrapper4
+
+} // doc_src_coordsys