Introduced QWindow properties {min/max}imum{Width/Height}

These are useful when QWindow is exposed to QML.

Change-Id: I7ec49ef365183e2c784605889e8ea22c2ef34781
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>

3 files changed, 70 insertions, 0 deletions

diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp
index a17270912f..d845be3d01 100644
--- a/src/gui/kernel/qwindow.cpp
+++ b/src/gui/kernel/qwindow.cpp
@@ -941,9 +941,24 @@ void QWindow::setMinimumSize(const QSize &size)
     QSize adjustedSize = QSize(qBound(0, size.width(), QWINDOWSIZE_MAX), qBound(0, size.height(), QWINDOWSIZE_MAX));
     if (d->minimumSize == adjustedSize)
         return;
+    QSize oldSize = d->minimumSize;
     d->minimumSize = adjustedSize;
     if (d->platformWindow && isTopLevel())
         d->platformWindow->propagateSizeHints();
+    if (d->minimumSize.width() != oldSize.width())
+        emit minimumWidthChanged(d->minimumSize.width());
+    if (d->minimumSize.height() != oldSize.height())
+        emit minimumHeightChanged(d->minimumSize.height());
+}
+
+void QWindow::setMinimumWidth(int w)
+{
+    setMinimumSize(QSize(w, minimumHeight()));
+}
+
+void QWindow::setMinimumHeight(int h)
+{
+    setMinimumSize(QSize(minimumWidth(), h));
 }
 
 /*!
@@ -959,9 +974,24 @@ void QWindow::setMaximumSize(const QSize &size)
     QSize adjustedSize = QSize(qBound(0, size.width(), QWINDOWSIZE_MAX), qBound(0, size.height(), QWINDOWSIZE_MAX));
     if (d->maximumSize == adjustedSize)
         return;
+    QSize oldSize = d->maximumSize;
     d->maximumSize = adjustedSize;
     if (d->platformWindow && isTopLevel())
         d->platformWindow->propagateSizeHints();
+    if (d->maximumSize.width() != oldSize.width())
+        emit maximumWidthChanged(d->maximumSize.width());
+    if (d->maximumSize.height() != oldSize.height())
+        emit maximumHeightChanged(d->maximumSize.height());
+}
+
+void QWindow::setMaximumWidth(int w)
+{
+    setMaximumSize(QSize(w, maximumHeight()));
+}
+
+void QWindow::setMaximumHeight(int h)
+{
+    setMaximumSize(QSize(maximumWidth(), h));
 }
 
 /*!
@@ -1060,6 +1090,26 @@ void QWindow::setGeometry(const QRect &rect)
 */
 
 /*!
+    \property QWindow::minimumWidth
+    \brief the minimum width of the window's geometry
+*/
+
+/*!
+    \property QWindow::minimumHeight
+    \brief the minimum height of the window's geometry
+*/
+
+/*!
+    \property QWindow::maximumWidth
+    \brief the maximum width of the window's geometry
+*/
+
+/*!
+    \property QWindow::maximumHeight
+    \brief the maximum height of the window's geometry
+*/
+
+/*!
     Returns the geometry of the window, excluding its window frame.
 
     \sa frameMargins(), frameGeometry()
diff --git a/src/gui/kernel/qwindow.h b/src/gui/kernel/qwindow.h
index 62268cd88a..4832adfb63 100644
--- a/src/gui/kernel/qwindow.h
+++ b/src/gui/kernel/qwindow.h
@@ -104,6 +104,10 @@ class Q_GUI_EXPORT QWindow : public QObject, public QSurface
     Q_PROPERTY(QPoint pos READ pos WRITE setPos)
     Q_PROPERTY(QSize size READ size WRITE resize)
     Q_PROPERTY(QRect geometry READ geometry WRITE setGeometry)
+    Q_PROPERTY(int minimumWidth READ minimumWidth WRITE setMinimumWidth NOTIFY minimumWidthChanged)
+    Q_PROPERTY(int minimumHeight READ minimumHeight WRITE setMinimumHeight NOTIFY minimumHeightChanged)
+    Q_PROPERTY(int maximumWidth READ maximumWidth WRITE setMaximumWidth NOTIFY maximumWidthChanged)
+    Q_PROPERTY(int maximumHeight READ maximumHeight WRITE setMaximumHeight NOTIFY maximumHeightChanged)
     Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibleChanged)
     Q_PROPERTY(Qt::ScreenOrientation contentOrientation READ contentOrientation WRITE reportContentOrientationChange NOTIFY contentOrientationChanged)
 #ifndef QT_NO_CURSOR
@@ -170,6 +174,11 @@ public:
 
     bool isExposed() const;
 
+    int minimumWidth() const { return minimumSize().width(); }
+    int minimumHeight() const { return minimumSize().height(); }
+    int maximumWidth() const { return maximumSize().width(); }
+    int maximumHeight() const { return maximumSize().height(); }
+
     QSize minimumSize() const;
     QSize maximumSize() const;
     QSize baseSize() const;
@@ -273,6 +282,11 @@ public Q_SLOTS:
             setGeometry(QRect(x(), y(), width(), arg));
     }
 
+    void setMinimumWidth(int w);
+    void setMinimumHeight(int h);
+    void setMaximumWidth(int w);
+    void setMaximumHeight(int h);
+
 Q_SIGNALS:
     void screenChanged(QScreen *screen);
     void windowModalityChanged(Qt::WindowModality windowModality);
@@ -283,6 +297,11 @@ Q_SIGNALS:
     void widthChanged(int arg);
     void heightChanged(int arg);
 
+    void minimumWidthChanged(int arg);
+    void minimumHeightChanged(int arg);
+    void maximumWidthChanged(int arg);
+    void maximumHeightChanged(int arg);
+
     void visibleChanged(bool arg);
     void contentOrientationChanged(Qt::ScreenOrientation orientation);
 
diff --git a/src/gui/kernel/qwindow_p.h b/src/gui/kernel/qwindow_p.h
index 159f05d1a5..bce6a4ff04 100644
--- a/src/gui/kernel/qwindow_p.h
+++ b/src/gui/kernel/qwindow_p.h
@@ -80,6 +80,7 @@ public:
         , positionPolicy(WindowFrameExclusive)
         , contentOrientation(Qt::PrimaryOrientation)
         , windowOrientation(Qt::PrimaryOrientation)
+        , minimumSize(0, 0)
         , maximumSize(QWINDOWSIZE_MAX, QWINDOWSIZE_MAX)
         , modality(Qt::NonModal)
         , blockedByModalWindow(false)