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Handle failure to allocate a GC.

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This commit is contained in:
Chris Wilson 2007-03-16 19:35:02 +00:00 • committed by Carl Worth
parent c6055dc349
commit 751976970b
1 changed files with 34 additions and 17 deletions
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51
src/cairo-xlib-surface.c
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@ -51,7 +51,7 @@ typedef int (*cairo_xlib_error_func_t) (Display *display,
typedef struct _cairo_xlib_surface cairo_xlib_surface_t;
static void
static cairo_status_t
_cairo_xlib_surface_ensure_gc (cairo_xlib_surface_t *surface);
static void
@ -587,22 +587,27 @@ _get_image_surface (cairo_xlib_surface_t *surface,
* retry, but to keep things simple, we just create a
* temporary pixmap
*/
Pixmap pixmap = XCreatePixmap (surface->dpy,
Pixmap pixmap;
cairo_status_t status = _cairo_xlib_surface_ensure_gc (surface);
if (status)
return status;
pixmap = XCreatePixmap (surface->dpy,
surface->drawable,
x2 - x1, y2 - y1,
surface->depth);
_cairo_xlib_surface_ensure_gc (surface);
if (pixmap) {
XCopyArea (surface->dpy, surface->drawable, pixmap, surface->gc,
x1, y1, x2 - x1, y2 - y1, 0, 0);
XCopyArea (surface->dpy, surface->drawable, pixmap, surface->gc,
x1, y1, x2 - x1, y2 - y1, 0, 0);
ximage = XGetImage (surface->dpy,
pixmap,
0, 0,
x2 - x1, y2 - y1,
AllPlanes, ZPixmap);
ximage = XGetImage (surface->dpy,
pixmap,
0, 0,
x2 - x1, y2 - y1,
AllPlanes, ZPixmap);
XFreePixmap (surface->dpy, pixmap);
XFreePixmap (surface->dpy, pixmap);
}
}
if (!ximage)
return CAIRO_STATUS_NO_MEMORY;
@ -731,18 +736,23 @@ _cairo_xlib_surface_ensure_dst_picture (cairo_xlib_surface_t *surface)
}
static void
static cairo_status_t
_cairo_xlib_surface_ensure_gc (cairo_xlib_surface_t *surface)
{
XGCValues gcv;
if (surface->gc)
return;
return CAIRO_STATUS_SUCCESS;
gcv.graphics_exposures = False;
surface->gc = XCreateGC (surface->dpy, surface->drawable,
GCGraphicsExposures, &gcv);
if (!surface->gc)
return CAIRO_STATUS_NO_MEMORY;
_cairo_xlib_surface_set_gc_clip_rects (surface);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
@ -758,6 +768,7 @@ _draw_image_surface (cairo_xlib_surface_t *surface,
XImage ximage;
unsigned int bpp, alpha, red, green, blue;
int native_byte_order = _native_byte_order_lsb () ? LSBFirst : MSBFirst;
cairo_status_t status;
pixman_format_get_masks (pixman_image_get_format (image->pixman_image),
&bpp, &alpha, &red, &green, &blue);
@ -780,7 +791,9 @@ _draw_image_surface (cairo_xlib_surface_t *surface,
XInitImage (&ximage);
_cairo_xlib_surface_ensure_gc (surface);
status = _cairo_xlib_surface_ensure_gc (surface);
if (status)
return status;
XPutImage(surface->dpy, surface->drawable, surface->gc,
&ximage, src_x, src_y, dst_x, dst_y,
width, height);
@ -1364,7 +1377,9 @@ _cairo_xlib_surface_composite (cairo_operator_t op,
break;
case DO_XCOPYAREA:
_cairo_xlib_surface_ensure_gc (dst);
status = _cairo_xlib_surface_ensure_gc (dst);
if (status)
goto BAIL;
XCopyArea (dst->dpy,
src->drawable,
dst->drawable,
@ -1384,7 +1399,9 @@ _cairo_xlib_surface_composite (cairo_operator_t op,
* _recategorize_composite_operation.
*/
_cairo_xlib_surface_ensure_gc (dst);
status = _cairo_xlib_surface_ensure_gc (dst);
if (status)
goto BAIL;
_cairo_matrix_is_integer_translation (&src_attr.matrix, &itx, &ity);
XSetTSOrigin (dst->dpy, dst->gc,