Long live Qt 4.5!

1 files changed, 119 insertions, 0 deletions

diff --git a/doc/src/snippets/code/doc_src_layout.qdoc b/doc/src/snippets/code/doc_src_layout.qdoc
new file mode 100644
index 0000000..48e10e9
--- /dev/null
+++ b/doc/src/snippets/code/doc_src_layout.qdoc
@@ -0,0 +1,119 @@
+//! [0]
+#ifndef CARD_H
+#define CARD_H
+
+#include <QLayout>
+#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();
+
+    void addItem(QLayoutItem *item);
+    QSize sizeHint() const;
+    QSize minimumSize() const;
+    QLayoutItem *itemAt(int) const;
+    QLayoutItem *takeAt(int);
+    void setGeometry(const QRect &rect);
+
+private:
+    QList<QLayoutItem*> list;
+};
+#endif
+//! [0]
+
+
+//! [1]
+#include "card.h"
+//! [1]
+
+
+//! [2]
+QLayoutItem *CardLayout::itemAt(int idx) const
+{
+    // QList::value() performs index checking, and returns 0 if we are
+    // outside the valid range
+    return list.value(idx);
+}
+
+QLayoutItem *CardLayout::takeAt(int idx)
+{
+    // QList::take does not do index checking
+    return idx >= 0 && idx < list.size() ? list.takeAt(idx) : 0;
+}
+//! [2]
+
+
+//! [3]
+void CardLayout::addItem(QLayoutItem *item)
+{
+    list.append(item);
+}
+//! [3]
+
+
+//! [4]
+CardLayout::~CardLayout()
+{
+    deleteAllItems();
+}
+//! [4]
+
+
+//! [5]
+void CardLayout::setGeometry(const QRect &r)
+{
+    QLayout::setGeometry(r);
+
+    if (list.size() == 0)
+        return;
+
+    int w = r.width() - (list.count() - 1) * spacing();
+    int h = r.height() - (list.count() - 1) * spacing();
+    int i = 0;
+    while (i < list.size()) {
+        QLayoutItem *o = list.at(i);
+        QRect geom(r.x() + i * spacing(), r.y() + i * spacing(), w, h);
+        o->setGeometry(geom);
+        ++i;
+    }
+}
+//! [5]
+
+
+//! [6]
+QSize CardLayout::sizeHint() const
+{
+    QSize s(0,0);
+    int n = list.count();
+    if (n > 0)
+        s = QSize(100,70); //start with a nice default size
+    int i = 0;
+    while (i < n) {
+        QLayoutItem *o = list.at(i);
+        s = s.expandedTo(o->sizeHint());
+        ++i;
+    }
+    return s + n*QSize(spacing(), spacing());
+}
+
+QSize CardLayout::minimumSize() const
+{
+    QSize s(0,0);
+    int n = list.count();
+    int i = 0;
+    while (i < n) {
+        QLayoutItem *o = list.at(i);
+        s = s.expandedTo(o->minimumSize());
+        ++i;
+    }
+    return s + n*QSize(spacing(), spacing());
+}
+//! [6]