Compile on Symbian - rework the X11 mask patch a bit.

Avoid adding a virtual QPixmapData::hasMask() function, we can
do without it. Made QPixmap::hasAlpha() fast, so we can use that
instead.

Reviewed-by: Samuel

5 files changed, 17 insertions, 20 deletions

diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index 6a13f49..64d8ed2 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -1798,13 +1798,27 @@ QPixmap QPixmap::transformed(const QMatrix &matrix, Qt::TransformationMode mode)
     Returns true if this pixmap has an alpha channel, \e or has a
     mask, otherwise returns false.
 
-    \warning This is potentially an expensive operation.
-
     \sa hasAlphaChannel(), mask()
 */
 bool QPixmap::hasAlpha() const
 {
-    return data && (data->hasAlphaChannel() || !data->mask().isNull());
+#if defined(Q_WS_X11)
+    if (data && data->hasAlphaChannel())
+        return true;
+    QPixmapData *pd = pixmapData();
+    if (pd && pd->classId() == QPixmapData::X11Class) {
+        QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(pd);
+#ifndef QT_NO_XRENDER
+        if (x11Data->picture && x11Data->d == 32)
+            return true;
+#endif
+        if (x11Data->d == 1 || x11Data->x11_mask)
+            return true;
+    }
+    return false;
+#else
+    return data && data->hasAlphaChannel();
+#endif
 }
 
 /*!
diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp
index 32676ba..01f2c11 100644
--- a/src/gui/image/qpixmap_x11.cpp
+++ b/src/gui/image/qpixmap_x11.cpp
@@ -1321,16 +1321,6 @@ QBitmap QX11PixmapData::mask() const
     return mask;
 }
 
-bool QX11PixmapData::hasMask() const
-{
-    return
-#ifndef QT_NO_XRENDER
-        (picture && d == 32) ||
-#endif
-        (d == 1) || x11_mask;
-}
-
-
 /*!
     Sets a mask bitmap.
 
diff --git a/src/gui/image/qpixmap_x11_p.h b/src/gui/image/qpixmap_x11_p.h
index fcad1a2..821fb69 100644
--- a/src/gui/image/qpixmap_x11_p.h
+++ b/src/gui/image/qpixmap_x11_p.h
@@ -82,7 +82,6 @@ public:
 
     void fill(const QColor &color);
     QBitmap mask() const;
-    bool hasMask() const;
     void setMask(const QBitmap &mask);
     bool hasAlphaChannel() const;
     void setAlphaChannel(const QPixmap &alphaChannel);
diff --git a/src/gui/image/qpixmapdata.cpp b/src/gui/image/qpixmapdata.cpp
index 2813ed1..ef1f6c4 100644
--- a/src/gui/image/qpixmapdata.cpp
+++ b/src/gui/image/qpixmapdata.cpp
@@ -239,11 +239,6 @@ QBitmap QPixmapData::mask() const
     return QBitmap::fromImage(mask);
 }
 
-bool QPixmapData::hasMask() const
-{
-    return hasAlphaChannel();
-}
-
 QPixmap QPixmapData::transformed(const QTransform &matrix,
                                  Qt::TransformationMode mode) const
 {
diff --git a/src/gui/image/qpixmapdata_p.h b/src/gui/image/qpixmapdata_p.h
index c341930..ec62b0b 100644
--- a/src/gui/image/qpixmapdata_p.h
+++ b/src/gui/image/qpixmapdata_p.h
@@ -99,7 +99,6 @@ public:
     virtual int metric(QPaintDevice::PaintDeviceMetric metric) const = 0;
     virtual void fill(const QColor &color) = 0;
     virtual QBitmap mask() const;
-    virtual bool hasMask() const;
     virtual void setMask(const QBitmap &mask);
     virtual bool hasAlphaChannel() const = 0;
     virtual QPixmap transformed(const QTransform &matrix,