Correcting bug in cardLayout example

Adding the count() function to the example.

Task-number: 220766

Rev-by: Geir Vattekar

2 files changed, 33 insertions, 24 deletions

diff --git a/doc/src/layout.qdoc b/doc/src/layout.qdoc
index 55dfd8b..196999b 100644
--- a/doc/src/layout.qdoc
+++ b/doc/src/layout.qdoc
@@ -315,7 +315,11 @@
 
     \snippet doc/src/snippets/code/doc_src_layout.qdoc 1
 
-    First we define two functions that iterate over the layout: \c{itemAt()}
+    First we define \c{count()} to fetch the number of items in the list.
+
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 2
+
+    Then we define two functions that iterate over the layout: \c{itemAt()}
     and \c{takeAt()}. These functions are used internally by the layout system
     to handle deletion of widgets. They are also available for application
     programmers. 
@@ -326,7 +330,7 @@
     structure, we may have to spend more effort defining a linear order for the
     items.
 
-    \snippet doc/src/snippets/code/doc_src_layout.qdoc 2
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 3
 
     \c{addItem()} implements the default placement strategy for layout items.
     This function must be implemented. It is used by QLayout::add(), by the
@@ -336,26 +340,26 @@
     QGridLayout::addItem(), QGridLayout::addWidget(), and
     QGridLayout::addLayout().
 
-    \snippet doc/src/snippets/code/doc_src_layout.qdoc 3
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 4
 
     The layout takes over responsibility of the items added. Since QLayoutItem
     does not inherit QObject, we must delete the items manually. The function
     QLayout::deleteAllItems() uses \c{takeAt()} defined above to delete all the
     items in the layout.
 
-    \snippet doc/src/snippets/code/doc_src_layout.qdoc 4
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 5
 
     The \c{setGeometry()} function actually performs the layout. The rectangle
     supplied as an argument does not include \c{margin()}. If relevant, use
     \c{spacing()} as the distance between items.
 
-    \snippet doc/src/snippets/code/doc_src_layout.qdoc 5
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 6
 
     \c{sizeHint()} and \c{minimumSize()} are normally very similar in
     implementation. The sizes returned by both functions should include
     \c{spacing()}, but not \c{margin()}.
 
-    \snippet doc/src/snippets/code/doc_src_layout.qdoc 6
+    \snippet doc/src/snippets/code/doc_src_layout.qdoc 7
 
 
     \section2 Further Notes
diff --git a/doc/src/snippets/code/doc_src_layout.qdoc b/doc/src/snippets/code/doc_src_layout.qdoc
index 48e10e9..fedcf0c 100644
--- a/doc/src/snippets/code/doc_src_layout.qdoc
+++ b/doc/src/snippets/code/doc_src_layout.qdoc
@@ -2,23 +2,21 @@
 #ifndef CARD_H
 #define CARD_H
 
-#include <QLayout>
+#include <QtGui>
 #include <QList>
 
 class CardLayout : public QLayout
 {
 public:
-    CardLayout(QWidget *parent, int dist)
-        : QLayout(parent, 0, dist) {}
-    CardLayout(QLayout *parent, int dist)
-        : QLayout(parent, dist) {}
-    CardLayout(int dist)
-        : QLayout(dist) {}
+    CardLayout(QWidget *parent, int dist): QLayout(parent, 0, dist) {}
+    CardLayout(QLayout *parent, int dist): QLayout(parent, dist) {}
+    CardLayout(int dist): QLayout(dist) {}
     ~CardLayout();
 
     void addItem(QLayoutItem *item);
     QSize sizeHint() const;
     QSize minimumSize() const;
+	QLayoutItem *count() const;
     QLayoutItem *itemAt(int) const;
     QLayoutItem *takeAt(int);
     void setGeometry(const QRect &rect);
@@ -31,11 +29,18 @@ private:
 
 
 //! [1]
-#include "card.h"
+//#include "card.h"
 //! [1]
 
-
 //! [2]
+QLayoutItem *CardLayout::count() const
+{
+	// QList::size() returns the number of QLayoutItems in the list
+    return list.size();
+}
+//! [2]
+
+//! [3]
 QLayoutItem *CardLayout::itemAt(int idx) const
 {
     // QList::value() performs index checking, and returns 0 if we are
@@ -48,26 +53,26 @@ QLayoutItem *CardLayout::takeAt(int idx)
     // QList::take does not do index checking
     return idx >= 0 && idx < list.size() ? list.takeAt(idx) : 0;
 }
-//! [2]
+//! [3]
 
 
-//! [3]
+//! [4]
 void CardLayout::addItem(QLayoutItem *item)
 {
     list.append(item);
 }
-//! [3]
+//! [4]
 
 
-//! [4]
+//! [5]
 CardLayout::~CardLayout()
 {
     deleteAllItems();
 }
-//! [4]
+//! [5]
 
 
-//! [5]
+//! [6]
 void CardLayout::setGeometry(const QRect &r)
 {
     QLayout::setGeometry(r);
@@ -85,10 +90,10 @@ void CardLayout::setGeometry(const QRect &r)
         ++i;
     }
 }
-//! [5]
+//! [6]
 
 
-//! [6]
+//! [7]
 QSize CardLayout::sizeHint() const
 {
     QSize s(0,0);
@@ -116,4 +121,4 @@ QSize CardLayout::minimumSize() const
     }
     return s + n*QSize(spacing(), spacing());
 }
-//! [6]
+//! [7]
\ No newline at end of file