int
pxSetClipIntersect(px_args_t *par, px_state_t *pxs)
{ gs_state *pgs = pxs->pgs;
pxeClipRegion_t clip_region = par->pv[0]->value.i;
int code;
check_clip_region(par, pxs);
/*
* The discussion of ClipMode and ClipRegion in the published
* specification is confused and incorrect. Based on testing with
* the LaserJet 6MP, we believe that ClipMode works just like
* PostScript clip and eoclip, and that ClipRegion applies only to
* the *current* path (i.e., support for "outside clipping" in the
* library is unnecessary). If we had only known....
*/
#if 0
gs_setclipoutside(pgs, false);
#endif
if ( clip_region == eExterior )
{ /*
* We know clip_mode is eEvenOdd, so we can complement the
* region defined by the current path by just adding a
* rectangle that encloses the entire page.
*/
gs_rect bbox;
code = gs_gsave(pgs);
if ( code < 0 )
return code;
px_initclip(pxs);
if ( (code = gs_clippath(pgs)) < 0 ||
(code = gs_pathbbox(pgs, &bbox)) < 0
)
DO_NOTHING;
gs_grestore(pgs);
if ( code < 0 ||
(code = gs_rectappend(pgs, &bbox, 1)) < 0
)
return code;
#ifdef CLIP_INTERSECT_EXTERIOR_REPLACES
px_initclip(pxs);
#endif
}
code =
(pxs->pxgs->clip_mode == eEvenOdd ? gs_eoclip(pgs) : gs_clip(pgs));
if ( code < 0 )
return code;
#if 0
gs_setclipoutside(pgs, clip_region == eExterior);
#endif
return gs_newpath(pgs);
}
/* <numarray|numstring> .rectappend - */
static int
zrectappend(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
local_rects_t lr;
int npop = rect_get(&lr, op, imemory);
int code;
if (npop < 0)
return npop;
code = gs_rectappend(igs, lr.pr, lr.count);
rect_release(&lr, imemory);
if (code < 0)
return code;
pop(npop);
return 0;
}
/* Clip to a list of rectangles. */
int
gs_rectclip(gs_state * pgs, const gs_rect * pr, uint count)
{
int code;
gx_path save;
gx_path_init_local(&save, pgs->memory);
gx_path_assign_preserve(&save, pgs->path);
gs_newpath(pgs);
if ((code = gs_rectappend(pgs, pr, count)) < 0 ||
(code = gs_clip(pgs)) < 0
) {
gx_path_assign_free(pgs->path, &save);
return code;
}
gx_path_free(&save, "gs_rectclip");
gs_newpath(pgs);
return 0;
}
/* (We could do this a lot more efficiently.) */
int
gs_rectstroke(gs_state * pgs, const gs_rect * pr, uint count,
const gs_matrix * pmat)
{
bool do_save = pmat != NULL || !gx_path_is_null(pgs->path);
int code;
if (do_save) {
if ((code = gs_gsave(pgs)) < 0)
return code;
gs_newpath(pgs);
}
if ((code = gs_rectappend(pgs, pr, count)) < 0 ||
(pmat != NULL && (code = gs_concat(pgs, pmat)) < 0) ||
(code = gs_stroke(pgs)) < 0
)
DO_NOTHING;
if (do_save)
gs_grestore(pgs);
else if (code < 0)
gs_newpath(pgs);
return code;
}
/* We take the trouble to do this efficiently in the simple cases. */
int
gs_rectfill(gs_state * pgs, const gs_rect * pr, uint count)
{
const gs_rect *rlist = pr;
gx_clip_path *pcpath;
uint rcount = count;
int code;
gx_device * pdev = pgs->device;
gx_device_color *pdc = gs_currentdevicecolor_inline(pgs);
const gs_imager_state *pis = (const gs_imager_state *)pgs;
bool hl_color_available = gx_hld_is_hl_color_available(pis, pdc);
bool hl_color = (hl_color_available &&
dev_proc(pdev, dev_spec_op)(pdev, gxdso_supports_hlcolor,
NULL, 0));
bool center_of_pixel = (pgs->fill_adjust.x == 0 && pgs->fill_adjust.y == 0);
/* Processing a fill object operation */
dev_proc(pgs->device, set_graphics_type_tag)(pgs->device, GS_PATH_TAG);
code = gx_set_dev_color(pgs);
if (code != 0)
return code;
if ((is_fzero2(pgs->ctm.xy, pgs->ctm.yx) ||
is_fzero2(pgs->ctm.xx, pgs->ctm.yy)) &&
gx_effective_clip_path(pgs, &pcpath) >= 0 &&
clip_list_is_rectangle(gx_cpath_list(pcpath)) &&
(hl_color ||
pdc->type == gx_dc_type_pure ||
pdc->type == gx_dc_type_ht_binary ||
pdc->type == gx_dc_type_ht_colored) &&
gs_state_color_load(pgs) >= 0 &&
(*dev_proc(pdev, get_alpha_bits)) (pdev, go_graphics)
<= 1 &&
(!pgs->overprint || !pgs->effective_overprint_mode)
) {
uint i;
gs_fixed_rect clip_rect;
gx_cpath_inner_box(pcpath, &clip_rect);
/* We should never plot anything for an empty clip rectangle */
if ((clip_rect.p.x >= clip_rect.q.x) &&
(clip_rect.p.y >= clip_rect.q.y))
return 0;
for (i = 0; i < count; ++i) {
gs_fixed_point p, q;
gs_fixed_rect draw_rect;
if (gs_point_transform2fixed(&pgs->ctm, pr[i].p.x, pr[i].p.y, &p) < 0 ||
gs_point_transform2fixed(&pgs->ctm, pr[i].q.x, pr[i].q.y, &q) < 0
) { /* Switch to the slow algorithm. */
goto slow;
}
draw_rect.p.x = min(p.x, q.x);
draw_rect.p.y = min(p.y, q.y);
draw_rect.q.x = max(p.x, q.x);
draw_rect.q.y = max(p.y, q.y);
if (hl_color) {
rect_intersect(draw_rect, clip_rect);
/* We do pass on 0 extant rectangles to high level
devices. It isn't clear how a client and an output
device should interact if one uses a center of
pixel algorithm and the other uses any part of
pixel. For now we punt and just pass the high
level rectangle on without adjustment. */
if (draw_rect.p.x <= draw_rect.q.x &&
draw_rect.p.y <= draw_rect.q.y) {
code = dev_proc(pdev, fill_rectangle_hl_color)(pdev,
&draw_rect, pis, pdc, pcpath);
if (code < 0)
return code;
}
} else {
int x, y, w, h;
rect_intersect(draw_rect, clip_rect);
if (center_of_pixel) {
draw_rect.p.x = fixed_rounded(draw_rect.p.x);
draw_rect.p.y = fixed_rounded(draw_rect.p.y);
draw_rect.q.x = fixed_rounded(draw_rect.q.x);
draw_rect.q.y = fixed_rounded(draw_rect.q.y);
} else { /* any part of pixel rule - touched */
draw_rect.p.x = fixed_floor(draw_rect.p.x);
draw_rect.p.y = fixed_floor(draw_rect.p.y);
draw_rect.q.x = fixed_ceiling(draw_rect.q.x);
draw_rect.q.y = fixed_ceiling(draw_rect.q.y);
}
x = fixed2int(draw_rect.p.x);
y = fixed2int(draw_rect.p.y);
w = fixed2int(draw_rect.q.x) - x;
h = fixed2int(draw_rect.q.y) - y;
/* clients that use the "any part of pixel" rule also
fill 0 areas. This is true of current graphics
library clients but not a general rule. */
if (!center_of_pixel) {
if (w == 0)
w = 1;
/* yes Adobe Acrobat 8, seems to back up the y
coordinate when the width is 0, sigh. */
if (h == 0) {
y--;
h = 1;
}
}
if (gx_fill_rectangle(x, y, w, h, pdc, pgs) < 0)
goto slow;
}
}
return 0;
slow:rlist = pr + i;
rcount = count - i;
} {
bool do_save = !gx_path_is_null(pgs->path);
if (do_save) {
if ((code = gs_gsave(pgs)) < 0)
return code;
gs_newpath(pgs);
}
if ((code = gs_rectappend(pgs, rlist, rcount)) < 0 ||
(code = gs_fill(pgs)) < 0
)
DO_NOTHING;
if (do_save)
gs_grestore(pgs);
else if (code < 0)
gs_newpath(pgs);
}
return code;
}
/* We take the trouble to do this efficiently in the simple cases. */
int
gs_rectfill(gs_state * pgs, const gs_rect * pr, uint count)
{
const gs_rect *rlist = pr;
gx_clip_path *pcpath;
uint rcount = count;
int code;
gx_device * pdev = pgs->device;
gx_device_color *pdc = pgs->dev_color;
const gs_imager_state *pis = (const gs_imager_state *)pgs;
bool hl_color_available = gx_hld_is_hl_color_available(pis, pdc);
gs_fixed_rect empty = {{0, 0}, {0, 0}};
bool hl_color = (hl_color_available &&
dev_proc(pdev, fill_rectangle_hl_color)(pdev,
&empty, pis, pdc, NULL) == 0);
gx_set_dev_color(pgs);
if ((is_fzero2(pgs->ctm.xy, pgs->ctm.yx) ||
is_fzero2(pgs->ctm.xx, pgs->ctm.yy)) &&
gx_effective_clip_path(pgs, &pcpath) >= 0 &&
clip_list_is_rectangle(gx_cpath_list(pcpath)) &&
(hl_color ||
pdc->type == gx_dc_type_pure ||
pdc->type == gx_dc_type_ht_binary ||
pdc->type == gx_dc_type_ht_colored
/* DeviceN todo: add wts case */) &&
gs_state_color_load(pgs) >= 0 &&
(*dev_proc(pdev, get_alpha_bits)) (pdev, go_graphics)
<= 1 &&
(!pgs->overprint || !pgs->effective_overprint_mode)
) {
uint i;
gs_fixed_rect clip_rect;
gx_cpath_inner_box(pcpath, &clip_rect);
for (i = 0; i < count; ++i) {
gs_fixed_point p, q;
gs_fixed_rect draw_rect;
if (gs_point_transform2fixed(&pgs->ctm, pr[i].p.x, pr[i].p.y, &p) < 0 ||
gs_point_transform2fixed(&pgs->ctm, pr[i].q.x, pr[i].q.y, &q) < 0
) { /* Switch to the slow algorithm. */
goto slow;
}
draw_rect.p.x = min(p.x, q.x);
draw_rect.p.y = min(p.y, q.y);
draw_rect.q.x = max(p.x, q.x);
draw_rect.q.y = max(p.y, q.y);
if (hl_color) {
rect_intersect(draw_rect, clip_rect);
if (draw_rect.p.x < draw_rect.q.x &&
draw_rect.p.y < draw_rect.q.y) {
code = dev_proc(pdev, fill_rectangle_hl_color)(pdev,
&draw_rect, pis, pdc, pcpath);
if (code < 0)
return code;
}
} else {
int x, y, w, h;
draw_rect.p.x -= pgs->fill_adjust.x;
draw_rect.p.y -= pgs->fill_adjust.x;
draw_rect.q.x += pgs->fill_adjust.x;
draw_rect.q.y += pgs->fill_adjust.x;
rect_intersect(draw_rect, clip_rect);
x = fixed2int_pixround(draw_rect.p.x);
y = fixed2int_pixround(draw_rect.p.y);
w = fixed2int_pixround(draw_rect.q.x) - x;
h = fixed2int_pixround(draw_rect.q.y) - y;
if (w > 0 && h > 0)
if (gx_fill_rectangle(x, y, w, h, pdc, pgs) < 0)
goto slow;
}
}
return 0;
slow:rlist = pr + i;
rcount = count - i;
} {
bool do_save = !gx_path_is_null(pgs->path);
if (do_save) {
if ((code = gs_gsave(pgs)) < 0)
return code;
gs_newpath(pgs);
}
if ((code = gs_rectappend(pgs, rlist, rcount)) < 0 ||
(code = gs_fill(pgs)) < 0
)
DO_NOTHING;
if (do_save)
gs_grestore(pgs);
else if (code < 0)
gs_newpath(pgs);
}
return code;
}
