Beispiel #1
0
/* Write a clipping path by calling the path procedures. */
int
gdev_vector_write_clip_path(gx_device_vector * vdev,
                            const gx_clip_path * pcpath)
{
    const gx_clip_rect *prect;
    gx_clip_rect page_rect;
    int code;

    if (pcpath == 0) {
        /* There's no special provision for initclip. */
        /* Write a rectangle that covers the entire page. */
        page_rect.xmin = page_rect.ymin = 0;
        page_rect.xmax = vdev->width;
        page_rect.ymax = vdev->height;
        page_rect.next = 0;
        prect = &page_rect;
    } else if (pcpath->path_valid) {
        return (*vdev_proc(vdev, dopath))
            (vdev, &pcpath->path,
             (pcpath->rule <= 0 ?
              gx_path_type_clip | gx_path_type_winding_number :
              gx_path_type_clip | gx_path_type_even_odd),
             NULL);
    } else {
        const gx_clip_list *list = gx_cpath_list(pcpath);

        prect = list->head;
        if (prect == 0)
            prect = &list->single;
    }
    /* Write out the rectangles. */
    code = (*vdev_proc(vdev, beginpath)) (vdev, gx_path_type_clip);
    for (; code >= 0 && prect != 0; prect = prect->next)
        if (prect->xmax > prect->xmin && prect->ymax > prect->ymin)
            code = gdev_vector_write_rectangle
                (vdev, int2fixed(prect->xmin), int2fixed(prect->ymin),
                 int2fixed(prect->xmax), int2fixed(prect->ymax),
                 false, gx_rect_x_first);
    if (code >= 0)
        code = (*vdev_proc(vdev, endpath)) (vdev, gx_path_type_clip);
    return code;
}
Beispiel #2
0
/* 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;
}
Beispiel #3
0
/* 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;
}