Re: Recent font problem

On 12/16/2011 12:03 PM, Heinrich Mueller wrote:
> Am 16.12.2011 19:24, schrieb walt:

>> So I deleted the assertion from cairo's code, and now pan works perfectly.

> Can you point me to the line number in the file?

You mean cairo's code, right?

This machine is running cairo-1.10.2, and here is the troublesome code in
cairo-surface.c.  The assertion is line 1287:

void
cairo_surface_set_device_offset (cairo_surface_t *surface,
                                  double           x_offset,
                                  double           y_offset)
{
     cairo_status_t status;

     if (surface->status)
         return;

     assert (surface->snapshot_of == NULL);

     if (surface->finished) {
         status = _cairo_surface_set_error (surface, _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
         return;
     }

     _cairo_surface_begin_modification (surface);

     surface->device_transform.x0 = x_offset;
     surface->device_transform.y0 = y_offset;

     surface->device_transform_inverse = surface->device_transform;
     status = cairo_matrix_invert (&surface->device_transform_inverse);
     /* should always be invertible unless given pathological input */
     assert (status == CAIRO_STATUS_SUCCESS);

     _cairo_observers_notify (&surface->device_transform_observers, surface);
}