diff options
Diffstat (limited to 'base/gdevkrnlsclass.c')
| -rw-r--r-- | base/gdevkrnlsclass.c | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/base/gdevkrnlsclass.c b/base/gdevkrnlsclass.c index 8625df4c..d615a100 100644 --- a/base/gdevkrnlsclass.c +++ b/base/gdevkrnlsclass.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2001-2020 Artifex Software, Inc. +/* Copyright (C) 2001-2021 Artifex Software, Inc. All Rights Reserved. This software is provided AS-IS with no warranty, either express or @@ -15,11 +15,12 @@ #include "gx.h" #include "gxdcolor.h" -#include "gdevkrnlsclass.h" /* 'standard' built in subclasses, currently First/Last Page and object filter */ +#include "gdevkrnlsclass.h" /* 'standard' built in subclasses, currently Page, Object, and Nup filter */ /* If set to '1' ths forces all devices to be loaded, even if they won't do anything. * This is useful for cluster testing that the very presence of a device doesn't - * break anything. + * break anything. This requires that all of these devices pass through if the params + * they use are 0/NULL. */ #define FORCE_TESTING_SUBCLASSING 0 @@ -28,6 +29,44 @@ int install_internal_subclass_devices(gx_device **ppdev, int *devices_loaded) int code = 0; gx_device *dev = (gx_device *)*ppdev, *saved; + /* + * NOTE: the Nup device should precede the PageHandler so the FirstPage, LastPage + * and PageList will filter pages out BEFORE they are seen by the nesting. + */ + +#if FORCE_TESTING_SUBCLASSING + if (!dev->NupHandlerPushed) { +#else + if (!dev->NupHandlerPushed && dev->NupControl != 0) { +#endif + code = gx_device_subclass(dev, (gx_device *)&gs_nup_device, sizeof(Nup_device_subclass_data)); + if (code < 0) + return code; + + saved = dev = dev->child; + + /* Open all devices *after* the new current device */ + do { + dev->is_open = true; + dev = dev->child; + }while(dev); + + dev = saved; + + /* Rewind to top device in chain */ + while(dev->parent) + dev = dev->parent; + + /* Note in all devices in chain that we have loaded the NupHandler */ + do { + dev->NupHandlerPushed = true; + dev = dev->child; + }while(dev); + + dev = saved; + if (devices_loaded) + *devices_loaded = true; + } #if FORCE_TESTING_SUBCLASSING if (!dev->PageHandlerPushed) { #else |