BUGFIX for 1314: Fix page initialization on first start of drawpad.

Problem was caused by a race condition. Developers: If you have todo
initializations which depend on the widget layout being finished,
_don't_ do this in the widget constructor but in a callback from the mainloop,
i.e. via QTimer::singleShot( 10, this, SLOT( myInitialization() ) );

1 files changed, 4 insertions, 2 deletions

diff --git a/noncore/graphics/drawpad/drawpadcanvas.cpp b/noncore/graphics/drawpad/drawpadcanvas.cpp
index 423ef26..5d0c6e4 100644
--- a/noncore/graphics/drawpad/drawpadcanvas.cpp
+++ b/noncore/graphics/drawpad/drawpadcanvas.cpp
@@ -516,11 +516,13 @@ void DrawPadCanvas::contentsMouseMoveEvent(QMouseEvent* e)
 
 void DrawPadCanvas::drawContents(QPainter* p, int cx, int cy, int cw, int ch)
 {
+    Page* currentPage = m_pages.current();
+    if ( !currentPage ) return; // no page yet --> initialization not finished (Mickeyl)
     QRect clipRect(cx, cy, cw, ch);
-    QRect pixmapRect(0, 0, m_pages.current()->pixmap()->width(), m_pages.current()->pixmap()->height());
+    QRect pixmapRect(0, 0, currentPage->pixmap()->width(), m_pages.current()->pixmap()->height());
     QRect drawRect = pixmapRect.intersect(clipRect);
 
-    p->drawPixmap(drawRect.topLeft(), *(m_pages.current()->pixmap()), drawRect);
+    p->drawPixmap(drawRect.topLeft(), *(currentPage->pixmap()), drawRect);
 
     if (drawRect.right() < clipRect.right()) {
         p->fillRect(drawRect.right() + 1, cy, cw - drawRect.width(), ch, colorGroup().dark());