QGraphicsAnchorLayout: Adding an usage example

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

4 files changed, 243 insertions, 1 deletions

diff --git a/examples/graphicsview/anchorlayout/anchorlayout.pro b/examples/graphicsview/anchorlayout/anchorlayout.pro
new file mode 100644
index 0000000..c969c8b
--- /dev/null
+++ b/examples/graphicsview/anchorlayout/anchorlayout.pro
@@ -0,0 +1,14 @@
+######################################################################
+# Automatically generated by qmake (2.01a) Tue May 12 15:22:25 2009
+######################################################################
+
+# Input
+SOURCES += main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/graphicsview/anchorlayout
+sources.files = $$SOURCES $$HEADERS $$RESOURCES anchorlayout.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/graphicsview/anchorlayout
+INSTALLS += target sources
+
+TARGET = anchorlayout_example
diff --git a/examples/graphicsview/anchorlayout/main.cpp b/examples/graphicsview/anchorlayout/main.cpp
new file mode 100644
index 0000000..d7563be
--- /dev/null
+++ b/examples/graphicsview/anchorlayout/main.cpp
@@ -0,0 +1,144 @@
+#include <QGraphicsWidget>
+#include <QGraphicsProxyWidget>
+#include <QGraphicsAnchorLayout>
+#include <QtGui>
+
+//#define BENCHMARK_RUN 1
+#define CALLGRIND_DEBUG 1
+
+#if defined(BENCHMARK_RUN)
+
+// Callgrind command line:
+//   valgrind --tool=callgrind --instr-atstart=no ./anchorlayout >/dev/null 2>&1
+
+#if defined(CALLGRIND_DEBUG)
+#include <valgrind/callgrind.h>
+#else
+#define CALLGRIND_START_INSTRUMENTATION do { } while (0)
+#define CALLGRIND_STOP_INSTRUMENTATION do { } while (0)
+#endif
+
+#endif
+
+
+static QGraphicsProxyWidget *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),
+                                   const QString &name = "0")
+{
+    QGraphicsProxyWidget *w = new QGraphicsProxyWidget;
+    w->setWidget(new QPushButton(name));
+    w->setData(0, name);
+    w->setMinimumSize(minimum);
+    w->setPreferredSize(preferred);
+    w->setMaximumSize(maximum);
+
+    return w;
+}
+
+class Test : public QObject
+{
+    Q_OBJECT;
+public:
+    Test(QGraphicsWidget *wi, QGraphicsLayout* la)
+        : QObject(), w(wi), l(la), first(true) {}
+
+    QGraphicsWidget *w;
+    QGraphicsLayout *l;
+    bool first;
+
+public slots:
+    void onTimer() {
+        if (first) {
+            first = false;
+            w->setContentsMargins(10, 10, 10, 10);
+        } else {
+            l->setContentsMargins(10, 10, 10, 10);
+        }
+    }
+};
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    QGraphicsScene *scene = new QGraphicsScene();
+    scene->setSceneRect(0, 0, 800, 480);
+
+    QSizeF min(30, 100);
+    QSizeF pref(210, 100);
+    QSizeF max(300, 100);
+
+    QGraphicsProxyWidget *a = createItem(min, pref, max, "A");
+    QGraphicsProxyWidget *b = createItem(min, pref, max, "B");
+    QGraphicsProxyWidget *c = createItem(min, pref, max, "C");
+    QGraphicsProxyWidget *d = createItem(min, pref, max, "D");
+    QGraphicsProxyWidget *e = createItem(min, pref, max, "E");
+    QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), max, "F");
+    QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), max, "G");
+
+    QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
+
+    QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window);
+    w->setPos(20, 20);
+    w->setLayout(l);
+
+    // vertical
+    l->anchor(a, QGraphicsAnchorLayout::Top, l, QGraphicsAnchorLayout::Top);
+    l->anchor(b, QGraphicsAnchorLayout::Top, l, QGraphicsAnchorLayout::Top);
+
+    l->anchor(c, QGraphicsAnchorLayout::Top, a, QGraphicsAnchorLayout::Bottom);
+    l->anchor(c, QGraphicsAnchorLayout::Top, b, QGraphicsAnchorLayout::Bottom);
+    l->anchor(c, QGraphicsAnchorLayout::Bottom, d, QGraphicsAnchorLayout::Top);
+    l->anchor(c, QGraphicsAnchorLayout::Bottom, e, QGraphicsAnchorLayout::Top);
+
+    l->anchor(d, QGraphicsAnchorLayout::Bottom, l, QGraphicsAnchorLayout::Bottom);
+    l->anchor(e, QGraphicsAnchorLayout::Bottom, l, QGraphicsAnchorLayout::Bottom);
+
+    l->anchor(c, QGraphicsAnchorLayout::Top, f, QGraphicsAnchorLayout::Top);
+    l->anchor(c, QGraphicsAnchorLayout::VCenter, f, QGraphicsAnchorLayout::Bottom);
+    l->anchor(f, QGraphicsAnchorLayout::Bottom, g, QGraphicsAnchorLayout::Top);
+    l->anchor(c, QGraphicsAnchorLayout::Bottom, g, QGraphicsAnchorLayout::Bottom);
+
+    // horizontal
+    l->anchor(l, QGraphicsAnchorLayout::Left, a, QGraphicsAnchorLayout::Left);
+    l->anchor(l, QGraphicsAnchorLayout::Left, d, QGraphicsAnchorLayout::Left);
+    l->anchor(a, QGraphicsAnchorLayout::Right, b, QGraphicsAnchorLayout::Left);
+
+    l->anchor(a, QGraphicsAnchorLayout::Right, c, QGraphicsAnchorLayout::Left);
+    l->anchor(c, QGraphicsAnchorLayout::Right, e, QGraphicsAnchorLayout::Left);
+
+    l->anchor(b, QGraphicsAnchorLayout::Right, l, QGraphicsAnchorLayout::Right);
+    l->anchor(e, QGraphicsAnchorLayout::Right, l, QGraphicsAnchorLayout::Right);
+    l->anchor(d, QGraphicsAnchorLayout::Right, e, QGraphicsAnchorLayout::Left);
+
+    l->anchor(l, QGraphicsAnchorLayout::Left, f, QGraphicsAnchorLayout::Left);
+    l->anchor(l, QGraphicsAnchorLayout::Left, g, QGraphicsAnchorLayout::Left);
+    l->anchor(f, QGraphicsAnchorLayout::Right, g, QGraphicsAnchorLayout::Right);
+
+#ifdef BENCHMARK_RUN
+    CALLGRIND_START_INSTRUMENTATION;
+    for (int i = 0; i < 100; i++) {
+        l->invalidate();
+        l->d_ptr->calculateGraphs();
+    }
+    CALLGRIND_STOP_INSTRUMENTATION;
+    return 0;
+#endif
+
+    l->dumpGraph();
+
+    scene->addItem(w);
+    scene->setBackgroundBrush(Qt::darkGreen);
+    QGraphicsView *view = new QGraphicsView(scene);
+    view->show();
+
+    Test test(w, l);
+    QTimer timer;
+    test.connect(&timer, SIGNAL(timeout()), SLOT(onTimer()));
+    timer.start(5000);
+
+    return app.exec();
+}
+
+#include "main.moc"
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;
+}
diff --git a/examples/graphicsview/graphicsview.pro b/examples/graphicsview/graphicsview.pro
index 66eb0b4..7238995 100644
--- a/examples/graphicsview/graphicsview.pro
+++ b/examples/graphicsview/graphicsview.pro
@@ -6,7 +6,8 @@ SUBDIRS       = \
               diagramscene \
               dragdroprobot \
               padnavigator \
-              basicgraphicslayouts
+              basicgraphicslayouts \
+              anchorlayout
 
 contains(QT_CONFIG, qt3support):SUBDIRS += portedcanvas portedasteroids
 contains(DEFINES, QT_NO_CURSOR): SUBDIRS -= dragdroprobot