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GdkQuartz: Handle NULL from [NSGraphicsContext currentContext].

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By returning a default surface. The situation where there's no
currentContext arises when GtkCSS is trying to determine the
layout sizes so no actual display is necessary.

Closes: #1411
This commit is contained in:
John Ralls 2018-10-20 12:27:46 -07:00
parent e457a7823c
commit e31187e1cf
1 changed files with 9 additions and 7 deletions
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8
gdk/quartz/gdksurface-quartz.c
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@ -138,6 +138,8 @@ gdk_surface_impl_quartz_get_context (GdkSurfaceImplQuartz *surface_impl,
cg_context = [[NSGraphicsContext currentContext] graphicsPort];
else
cg_context = [[NSGraphicsContext currentContext] CGContext];
if (!cg_context)
return NULL;
CGContextSaveGState (cg_context);
CGContextSetAllowsAntialiasing (cg_context, antialias);
@ -278,15 +280,15 @@ gdk_quartz_create_cairo_surface (GdkSurfaceImplQuartz *impl,
cg_context = gdk_quartz_surface_get_context (impl, TRUE);
if (!cg_context)
return NULL;
surface_data = g_new (GdkQuartzCairoSurfaceData, 1);
surface_data->surface_impl = impl;
surface_data->cg_context = cg_context;
if (cg_context)
surface = cairo_quartz_surface_create_for_cg_context (cg_context,
width, height);
else
surface = cairo_quartz_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_surface_set_user_data (surface, &gdk_quartz_cairo_key,
surface_data,