Doc: Make Qt Gui snippets compilable - brush

Remove unused code in snippet files not referenced from anywhere.

Task-number: QTBUG-81486
Change-Id: I80b46c013bde99e1aea86311d3579ccc922b8fd7
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

src/gui/doc/snippets/brush/brush.cpp

@@ -47,50 +47,25 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
+#include <QLinearGradient>
 
-#include <QtGui>
+namespace brush {
+void wrapper() {
 
-int main()
-{
-    QWidget anyPaintDevice;
-    {
-        // PEN SNIPPET
-        QPainter painter;
-        QPen pen(Qt::red, 2);                 // red solid line, 2 pixels wide
-        painter.begin(&anyPaintDevice);   // paint something
-        painter.setPen(pen);              // set the red, wide pen
-        painter.drawRect(40,30, 200,100); // draw a rectangle
-        painter.setPen(Qt::blue);             // set blue pen, 0 pixel width
-        painter.drawLine(40,30, 240,130); // draw a diagonal in rectangle
-        painter.end();                    // painting done
-    }
 
-    {
-        // BRUSH SNIPPET
-        QPainter painter;
-        QBrush brush(Qt::yellow);           // yellow solid pattern
-        painter.begin(&anyPaintDevice);   // paint something
-        painter.setBrush(brush);          // set the yellow brush
-        painter.setPen(Qt::NoPen);        // do not draw outline
-        painter.drawRect(40,30, 200,100); // draw filled rectangle
-        painter.setBrush(Qt::NoBrush);    // do not fill
-        painter.setPen(Qt::black);            // set black pen, 0 pixel width
-        painter.drawRect(10,10, 30,20);   // draw rectangle outline
-        painter.end();                    // painting done
-    }
-
-    // LINEAR
 //! [0]
-    QLinearGradient linearGrad(QPointF(100, 100), QPointF(200, 200));
-    linearGrad.setColorAt(0, Qt::black);
-    linearGrad.setColorAt(1, Qt::white);
+QLinearGradient linearGrad(QPointF(100, 100), QPointF(200, 200));
+linearGrad.setColorAt(0, Qt::black);
+linearGrad.setColorAt(1, Qt::white);
 //! [0]
 
-    // RADIAL
+
 //! [1]
-    QRadialGradient radialGrad(QPointF(100, 100), 100);
-    radialGrad.setColorAt(0, Qt::red);
-    radialGrad.setColorAt(0.5, Qt::blue);
-    radialGrad.setColorAt(1, Qt::green);
+QRadialGradient radialGrad(QPointF(100, 100), 100);
+radialGrad.setColorAt(0, Qt::red);
+radialGrad.setColorAt(0.5, Qt::blue);
+radialGrad.setColorAt(1, Qt::green);
 //! [1]
-}
+
+} // wrapper
+} // brush

src/gui/doc/snippets/brush/brush.pro

@@ -0,0 +1,8 @@
+TEMPLATE = lib
+TARGET = brush_snippets
+QT += core gui widgets
+
+SOURCES = \
+    brush.cpp \
+    gradientcreationsnippet.cpp
+

src/gui/doc/snippets/brush/gradientcreationsnippet.cpp

@@ -48,11 +48,11 @@
 **
 ****************************************************************************/
 
-#include <QtGui>
+#include <QBrush>
 
-int main(int argv, char **args)
-{
-    QApplication app(argv, args);
+namespace gradientcreationsnippet {
+
+void wrapper() {
 
 //! [0]
     QRadialGradient gradient(50, 50, 50, 50, 50);
@@ -62,11 +62,6 @@ int main(int argv, char **args)
     QBrush brush(gradient);
 //! [0]
 
-    QWidget widget;
-    QPalette palette;
-    palette.setBrush(widget.backgroundRole(), brush);
-    widget.setPalette(palette);
-    widget.show();
+} // wrapper
 
-    return app.exec();
-}
+} // gradientcreationsnippet

src/gui/doc/snippets/snippets.pro

@@ -3,6 +3,7 @@ SUBDIRS =
 
 contains(QT_BUILD_PARTS, tests) {
     SUBDIRS += \
+        brush \
         code \
         qfontdatabase \
         textdocument-end