QGraphicsAnchorLayout: Adding an usage example

Signed-off-by: Jesus Sanchez-Palencia <jesus.palencia@openbossa.org>

1 files changed, 83 insertions, 0 deletions

diff --git a/examples/graphicsview/anchorlayout/noGUI.cpp b/examples/graphicsview/anchorlayout/noGUI.cpp
new file mode 100644
index 0000000..3f04f9a
--- /dev/null
+++ b/examples/graphicsview/anchorlayout/noGUI.cpp
@@ -0,0 +1,83 @@
+#include <QGraphicsWidget>
+#include "qgraphicsanchorlayout.h"
+
+// DEBUG
+#include "qgraphicsanchorlayout_p.h"
+
+static QGraphicsWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
+                                   const QSizeF &preferred = QSize(150.0, 100.0),
+                                   const QSizeF &maximum = QSizeF(200.0, 100.0))
+{
+    QGraphicsWidget *w = new QGraphicsWidget;
+    w->setMinimumSize(minimum);
+    w->setPreferredSize(preferred);
+    w->setMaximumSize(maximum);
+    return w;
+}
+
+
+int main(int argc, char **argv)
+{
+    Q_UNUSED(argc);
+    Q_UNUSED(argv);
+
+
+    QGraphicsWidget *a = createItem(QSizeF(50.0, 100.0),
+                                    QSizeF(70.0, 100.0),
+                                    QSizeF(100.0, 200.0));
+    a->setData(0, "A");
+
+    QGraphicsWidget *b = createItem(QSizeF(10.0, 100.0),
+                                    QSizeF(20.0, 100.0),
+                                    QSizeF(40.0, 200.0));
+    b->setData(0, "B");
+
+    QGraphicsWidget *c = createItem(QSizeF(50.0, 100.0),
+                                    QSizeF(70.0, 100.0),
+                                    QSizeF(100.0, 200.0));
+    c->setData(0, "C");
+
+    QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
+
+    l->anchor(l, QGraphicsAnchorLayout::Top, a, QGraphicsAnchorLayout::Top);
+    l->anchor(a, QGraphicsAnchorLayout::Bottom, b, QGraphicsAnchorLayout::Top);
+    l->anchor(b, QGraphicsAnchorLayout::Bottom, c, QGraphicsAnchorLayout::Top);
+    l->anchor(c, QGraphicsAnchorLayout::Bottom, l, QGraphicsAnchorLayout::Bottom);
+
+    l->anchor(l, QGraphicsAnchorLayout::Left, a, QGraphicsAnchorLayout::Left);
+    l->anchor(a, QGraphicsAnchorLayout::Right, b, QGraphicsAnchorLayout::Right);
+    l->anchor(b, QGraphicsAnchorLayout::Left, c, QGraphicsAnchorLayout::Left);
+    l->anchor(c, QGraphicsAnchorLayout::Right, l, QGraphicsAnchorLayout::Right);
+
+    l->dumpGraph();
+
+    QSizeF layoutMinimumSize = l->effectiveSizeHint(Qt::MinimumSize);
+    QSizeF layoutMaximumSize = l->effectiveSizeHint(Qt::MaximumSize);
+    QSizeF layoutPreferredSize = l->effectiveSizeHint(Qt::PreferredSize);
+
+
+    qWarning() << "Layout Min/Pref/Max: " << layoutMinimumSize
+               << " " << layoutPreferredSize
+               << " " << layoutMaximumSize;
+
+
+    qWarning() << "\nSetting minimum size";
+    l->setGeometry(QRectF(QPointF(0,0), layoutMinimumSize));
+    qWarning() << "A: " << a->geometry();
+    qWarning() << "B: " << b->geometry();
+    qWarning() << "C: " << c->geometry();
+
+    qWarning() << "\nSetting maximum size";
+    l->setGeometry(QRectF(QPointF(0,0), layoutMaximumSize));
+    qWarning() << "A: " << a->geometry();
+    qWarning() << "B: " << b->geometry();
+    qWarning() << "C: " << c->geometry();
+
+    qWarning() << "\nSetting size 85.0";
+    l->setGeometry(QRectF(QPointF(0,0), QSizeF(85.0, 200.0)));
+    qWarning() << "A: " << a->geometry();
+    qWarning() << "B: " << b->geometry();
+    qWarning() << "C: " << c->geometry();
+
+    return 0;
+}