Doc: Compile painting snippets

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

Change-Id: I223cb257539d2ac4cb0a1ea209f0c3cebddb3d54
Done-with: Nico Vertriest <nico.vertriest@qt.io>
Task-number: QTBUG-81486
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

1 files changed, 129 insertions, 4 deletions

diff --git a/src/gui/doc/snippets/code/src_gui_painting_qpainter.cpp b/src/gui/doc/snippets/code/src_gui_painting_qpainter.cpp
index d1ee6bbdea..3a72c2aed8 100644
--- a/src/gui/doc/snippets/code/src_gui_painting_qpainter.cpp
+++ b/src/gui/doc/snippets/code/src_gui_painting_qpainter.cpp
@@ -47,6 +47,26 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
+#include <QOpenGLFunctions>
+#include <QPaintEvent>
+#include <QPainter>
+#include <QPainterPath>
+#include <QPicture>
+#include <QRectF>
+#include <QWidget>
+
+
+namespace src_gui_painting_qpainter {
+struct SimpleExampleWidget : public QPaintDevice {
+    void paintEvent(QPaintEvent *);
+    QRect rect();
+};
+struct MyWidget : public QWidget
+{
+    void paintEvent(QPaintEvent *);
+};
+QLine drawingCode;
+
 
 //! [0]
 void SimpleExampleWidget::paintEvent(QPaintEvent *)
@@ -64,21 +84,48 @@ void MyWidget::paintEvent(QPaintEvent *)
 {
     QPainter p;
     p.begin(this);
-    p.drawLine(...);        // drawing code
+    p.drawLine(drawingCode);        // drawing code
     p.end();
 }
 //! [1]
 
+} // src_gui_painting_qpainter
+namespace src_gui_painting_qpainter2 {
+struct MyWidget : public QWidget
+{
+    void paintEvent(QPaintEvent *);
+    int background() { return 0; }
+    void wrapper1();
+    void wrapper2();
+    void wrapper3();
+    void wrapper4();
+    void wrapper5();
+    void wrapper6();
+    void wrapper7();
+    void wrapper8();
+    void wrapper9();
+    void wrapper10();
+    void wrapper11();
+    void wrapper12();
+    void wrapper13();
+    void wrapper14();
+    void wrapper15();
+};
+QLine drawingCode;
 
 //! [2]
 void MyWidget::paintEvent(QPaintEvent *)
 {
     QPainter p(this);
-    p.drawLine(...);        // drawing code
+    p.drawLine(drawingCode);        // drawing code
 }
 //! [2]
 
 
+void wrapper0() {
+QPainter *painter = nullptr;
+QPainter *painter2 = nullptr;
+QPaintDevice *myWidget = nullptr;
 //! [3]
 painter->begin(0); // impossible - paint device cannot be 0
 
@@ -89,6 +136,13 @@ painter->begin(myWidget);
 painter2->begin(myWidget); // impossible - only one painter at a time
 //! [3]
 
+} // wrapper0
+
+namespace QPainterWrapper {
+struct QPainter {
+    void rotate(qreal angle);
+    void setWorldTransform(QTransform matrix, bool);
+};
 
 //! [4]
 void QPainter::rotate(qreal angle)
@@ -99,7 +153,9 @@ void QPainter::rotate(qreal angle)
 }
 //! [4]
 
+} // QPainterWrapper
 
+void MyWidget::wrapper1() {
 //! [5]
 QPainterPath path;
 path.moveTo(20, 80);
@@ -117,8 +173,11 @@ QLineF line(10.0, 80.0, 90.0, 20.0);
 QPainter(this);
 painter.drawLine(line);
 //! [6]
+} // MyWidget::wrapper1()
 
 
+void MyWidget::wrapper2() {
+
 //! [7]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
 
@@ -126,6 +185,10 @@ QPainter painter(this);
 painter.drawRect(rectangle);
 //! [7]
 
+} // MyWidget::wrapper2
+
+
+void MyWidget::wrapper3() {
 
 //! [8]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
@@ -134,6 +197,10 @@ QPainter painter(this);
 painter.drawRoundedRect(rectangle, 20.0, 15.0);
 //! [8]
 
+} // MyWidget::wrapper3
+
+
+void MyWidget::wrapper4() {
 
 //! [9]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
@@ -142,6 +209,10 @@ QPainter painter(this);
 painter.drawEllipse(rectangle);
 //! [9]
 
+} // MyWidget::wrapper4
+
+
+void MyWidget::wrapper5() {
 
 //! [10]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
@@ -152,6 +223,10 @@ QPainter painter(this);
 painter.drawArc(rectangle, startAngle, spanAngle);
 //! [10]
 
+} // MyWidget::wrapper5
+
+
+void MyWidget::wrapper6() {
 
 //! [11]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
@@ -162,6 +237,11 @@ QPainter painter(this);
 painter.drawPie(rectangle, startAngle, spanAngle);
 //! [11]
 
+} // MyWidget::wrapper6
+
+
+void MyWidget::wrapper7() {
+QRect rect;
 
 //! [12]
 QRectF rectangle(10.0, 20.0, 80.0, 60.0);
@@ -171,8 +251,12 @@ int spanAngle = 120 * 16;
 QPainter painter(this);
 painter.drawChord(rect, startAngle, spanAngle);
 //! [12]
+Q_UNUSED(rectangle);
+} // MyWidget::wrapper7
 
 
+void MyWidget::wrapper8() {
+
 //! [13]
 static const QPointF points[3] = {
     QPointF(10.0, 80.0),
@@ -184,7 +268,10 @@ QPainter painter(this);
 painter.drawPolyline(points, 3);
 //! [13]
 
+} // MyWidget::wrapper8
+
 
+void MyWidget::wrapper9() {
 //! [14]
 static const QPointF points[4] = {
     QPointF(10.0, 80.0),
@@ -197,6 +284,10 @@ QPainter painter(this);
 painter.drawPolygon(points, 4);
 //! [14]
 
+} // MyWidget::wrapper9
+
+
+void MyWidget::wrapper10() {
 
 //! [15]
 static const QPointF points[4] = {
@@ -220,27 +311,48 @@ QPainter(this);
 painter.drawPixmap(target, pixmap, source);
 //! [16]
 
+} // MyWidget::wrapper10
+
+
+void MyWidget::wrapper11() {
+QRect rect;
 
 //! [17]
 QPainter painter(this);
 painter.drawText(rect, Qt::AlignCenter, tr("Qt\nProject"));
 //! [17]
 
+} // MyWidget::wrapper11
+
+
+QRectF fillRect(QRect rect, int background) {
+    Q_UNUSED(rect);
+    Q_UNUSED(background);
+    return QRectF();
+};
+void MyWidget::wrapper12() {
+QRect rectangle;
 
 //! [18]
 QPicture picture;
-QPointF point(10.0, 20.0)
+QPointF point(10.0, 20.0);
 picture.load("drawing.pic");
 
 QPainter painter(this);
 painter.drawPicture(0, 0, picture);
 //! [18]
 
+Q_UNUSED(point);
+
 
 //! [19]
-fillRect(rectangle, background()).
+fillRect(rectangle, background());
 //! [19]
 
+} // MyWidget::wrapper12
+
+
+void MyWidget::wrapper13() {
 
 //! [20]
 QRectF target(10.0, 20.0, 80.0, 60.0);
@@ -251,6 +363,10 @@ QPainter painter(this);
 painter.drawImage(target, image, source);
 //! [20]
 
+} // MyWidget::wrapper13
+
+
+void MyWidget::wrapper14() {
 
 //! [21]
 QPainter painter(this);
@@ -268,6 +384,11 @@ glDisable(GL_SCISSOR_TEST);
 painter.endNativePainting();
 //! [21]
 
+} // MyWidget::wrapper14
+
+
+void MyWidget::wrapper15() {
+
 //! [drawText]
 QPainter painter(this);
 QFont font = painter.font();
@@ -287,3 +408,7 @@ pen.setStyle(Qt::DashLine);
 painter.setPen(pen);
 painter.drawRect(rectangle.adjusted(0, 0, -pen.width(), -pen.width()));
 //! [drawText]
+
+
+} // MyWidget::wrapper15
+} // src_gui_painting_qpainter2