[Libreoffice-commits] core.git: vcl/inc

[Tomaž Vajngerl]

 vcl/inc/win/winlayout.hxx |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

New commits:
commit 0686abc10aa729c8768b06249dbf7e57f4e56ae5
Author: Tomaž Vajngerl <tomaz.vajngerl at collabora.co.uk>
Date:   Thu Jul 13 13:30:20 2017 +0200

    tdf#107166 BindDC doesn't handle 0 width/height rect consistently
    
    When binding a GDI device context to D2D we need to provide a
    rectangle where the surface will have effect. When we just need
    some font information we need to bind the DC too, but we aren't
    really interested what the rectangle is, so we just provided a
    0,0,0,0 rectangle in that case. This sometimes fails with a
    "out of memory" result and is dependent on the renderer.
    
    Instead of 0,0,0,0 rectangle we rather define a 0,0,1,1 rectangle
    which should never fail. This is not problematic as for actual
    rendering we later rebind with an actual rectangle.
    
    Change-Id: I79c7f0cf4d69f213370ed26a811a908ed16070ff
    Reviewed-on: https://gerrit.libreoffice.org/39901
    Reviewed-by: Michael Meeks <michael.meeks at collabora.com>
    Tested-by: Jenkins <ci at libreoffice.org>

diff --git a/vcl/inc/win/winlayout.hxx b/vcl/inc/win/winlayout.hxx
index 9d2a40eba5be..128ff1f96a47 100644
--- a/vcl/inc/win/winlayout.hxx
+++ b/vcl/inc/win/winlayout.hxx
@@ -225,7 +225,10 @@ public:
         SalGraphics &rGraphics,
         HDC hDC) override;
 
-    bool BindDC(HDC hDC, tools::Rectangle const & rRect = tools::Rectangle(0, 0, 0, 0)) {
+    bool BindDC(HDC hDC, tools::Rectangle const & rRect = tools::Rectangle(0, 0, 1, 1))
+    {
+        if (rRect.GetWidth() == 0 || rRect.GetHeight() == 0)
+            return false;
         RECT const rc = { rRect.Left(), rRect.Top(), rRect.Right(), rRect.Bottom() };
         return SUCCEEDED(mpRT->BindDC(hDC, &rc));
     }