C++ PDF_NAME函数代码示例

void
pdf_set_annot_is_open(fz_context *ctx, pdf_annot *annot, int is_open)
{
	check_allowed_subtypes(ctx, annot, PDF_NAME(Open), open_subtypes);
	pdf_dict_put_bool(ctx, annot->obj, PDF_NAME(Open), is_open);
	pdf_dirty_annot(ctx, annot);
}

void
pdf_set_annot_vertices(fz_context *ctx, pdf_annot *annot, int n, const fz_point *v)
{
	pdf_document *doc = annot->page->doc;
	fz_matrix page_ctm, inv_page_ctm;
	pdf_obj *vertices;
	fz_point point;
	int i;

	check_allowed_subtypes(ctx, annot, PDF_NAME(Vertices), vertices_subtypes);
	if (n <= 0 || !v)
		fz_throw(ctx, FZ_ERROR_GENERIC, "invalid number of vertices");

	pdf_page_transform(ctx, annot->page, NULL, &page_ctm);
	fz_invert_matrix(&inv_page_ctm, &page_ctm);

	vertices = pdf_new_array(ctx, doc, n * 2);
	for (i = 0; i < n; ++i)
	{
		point = v[i];
		fz_transform_point(&point, &inv_page_ctm);
		pdf_array_push_real(ctx, vertices, point.x);
		pdf_array_push_real(ctx, vertices, point.y);
	}
	pdf_dict_put_drop(ctx, annot->obj, PDF_NAME(Vertices), vertices);
	pdf_dirty_annot(ctx, annot);
}

void
pdf_set_annot_icon_name(fz_context *ctx, pdf_annot *annot, const char *name)
{
	check_allowed_subtypes(ctx, annot, PDF_NAME(Name), icon_name_subtypes);
	pdf_dict_put_name(ctx, annot->obj, PDF_NAME(Name), name);
	pdf_dirty_annot(ctx, annot);
}

void
pdf_set_annot_quad_points(fz_context *ctx, pdf_annot *annot, int n, const float *v)
{
	pdf_document *doc = annot->page->doc;
	fz_matrix page_ctm, inv_page_ctm;
	pdf_obj *quad_points;
	fz_point point;
	int i, k;

	check_allowed_subtypes(ctx, annot, PDF_NAME(QuadPoints), quad_point_subtypes);
	if (n <= 0 || !v)
		fz_throw(ctx, FZ_ERROR_GENERIC, "invalid number of quadrilaterals");

	pdf_page_transform(ctx, annot->page, NULL, &page_ctm);
	fz_invert_matrix(&inv_page_ctm, &page_ctm);

	quad_points = pdf_new_array(ctx, doc, n * 8);
	for (i = 0; i < n; ++i)
	{
		for (k = 0; k < 4; ++k)
		{
			point.x = v[i * 8 + k * 2 + 0];
			point.y = v[i * 8 + k * 2 + 1];
			fz_transform_point(&point, &inv_page_ctm);
			pdf_array_push_real(ctx, quad_points, point.x);
			pdf_array_push_real(ctx, quad_points, point.y);
		}
	}
	pdf_dict_put_drop(ctx, annot->obj, PDF_NAME(QuadPoints), quad_points);
	pdf_dirty_annot(ctx, annot);
}

void
pdf_set_annot_author(fz_context *ctx, pdf_annot *annot, const char *author)
{
	check_allowed_subtypes(ctx, annot, PDF_NAME(T), markup_subtypes);
	pdf_dict_put_text_string(ctx, annot->obj, PDF_NAME(T), author);
	pdf_dirty_annot(ctx, annot);
}

void
pdf_set_annot_ink_list(fz_context *ctx, pdf_annot *annot, int n, const int *count, const fz_point *v)
{
	pdf_document *doc = annot->page->doc;
	fz_matrix page_ctm, inv_page_ctm;
	pdf_obj *ink_list, *stroke;
	fz_point point;
	int i, k;

	check_allowed_subtypes(ctx, annot, PDF_NAME(InkList), ink_list_subtypes);

	pdf_page_transform(ctx, annot->page, NULL, &page_ctm);
	fz_invert_matrix(&inv_page_ctm, &page_ctm);

	// TODO: update Rect (in update appearance perhaps?)

	ink_list = pdf_new_array(ctx, doc, n);
	for (i = 0; i < n; ++i)
	{
		stroke = pdf_new_array(ctx, doc, count[i] * 2);
		for (k = 0; k < count[i]; ++k)
		{
			point = *v++;
			fz_transform_point(&point, &inv_page_ctm);
			pdf_array_push_real(ctx, stroke, point.x);
			pdf_array_push_real(ctx, stroke, point.y);
		}
		pdf_array_push_drop(ctx, ink_list, stroke);
	}
	pdf_dict_put_drop(ctx, annot->obj, PDF_NAME(InkList), ink_list);
	pdf_dirty_annot(ctx, annot);
}

int pdf_xobject_knockout(fz_context *ctx, pdf_obj *xobj)
{
	pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
	if (group)
		return pdf_dict_get_bool(ctx, group, PDF_NAME(K));
	return 0;
}

void
pdf_clear_annot_quad_points(fz_context *ctx, pdf_annot *annot)
{
	check_allowed_subtypes(ctx, annot, PDF_NAME(QuadPoints), quad_point_subtypes);
	pdf_dict_del(ctx, annot->obj, PDF_NAME(QuadPoints));
	pdf_dirty_annot(ctx, annot);
}

int pdf_xobject_isolated(fz_context *ctx, pdf_obj *xobj)
{
	pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
	if (group)
		return pdf_dict_get_bool(ctx, group, PDF_NAME(I));
	return 0;
}

void
pdf_add_annot_quad_point(fz_context *ctx, pdf_annot *annot, fz_rect bbox)
{
	pdf_document *doc = annot->page->doc;
	fz_matrix page_ctm, inv_page_ctm;
	pdf_obj *quad_points;

	check_allowed_subtypes(ctx, annot, PDF_NAME(QuadPoints), quad_point_subtypes);

	pdf_page_transform(ctx, annot->page, NULL, &page_ctm);
	fz_invert_matrix(&inv_page_ctm, &page_ctm);

	quad_points = pdf_dict_get(ctx, annot->obj, PDF_NAME(QuadPoints));
	if (!pdf_is_array(ctx, quad_points))
	{
		quad_points = pdf_new_array(ctx, doc, 8);
		pdf_dict_put_drop(ctx, annot->obj, PDF_NAME(QuadPoints), quad_points);
	}

	/* Contrary to the specification, the points within a QuadPoint are NOT ordered
	 * in a counterclockwise fashion. Experiments with Adobe's implementation
	 * indicates a cross-wise ordering is intended: ul, ur, ll, lr.
	 */
	fz_transform_rect(&bbox, &inv_page_ctm);
	pdf_array_push_real(ctx, quad_points, bbox.x0); /* ul */
	pdf_array_push_real(ctx, quad_points, bbox.y1);
	pdf_array_push_real(ctx, quad_points, bbox.x1); /* ur */
	pdf_array_push_real(ctx, quad_points, bbox.y1);
	pdf_array_push_real(ctx, quad_points, bbox.x0); /* ll */
	pdf_array_push_real(ctx, quad_points, bbox.y0);
	pdf_array_push_real(ctx, quad_points, bbox.x1); /* lr */
	pdf_array_push_real(ctx, quad_points, bbox.y0);

	pdf_dirty_annot(ctx, annot);
}

static void
pdf_load_linear_shading(fz_context *ctx, pdf_document *doc, fz_shade *shade, pdf_obj *dict, int funcs, pdf_function **func)
{
	pdf_obj *obj;
	float d0, d1;
	int e0, e1;

	obj = pdf_dict_get(ctx, dict, PDF_NAME(Coords));
	shade->u.l_or_r.coords[0][0] = pdf_array_get_real(ctx, obj, 0);
	shade->u.l_or_r.coords[0][1] = pdf_array_get_real(ctx, obj, 1);
	shade->u.l_or_r.coords[1][0] = pdf_array_get_real(ctx, obj, 2);
	shade->u.l_or_r.coords[1][1] = pdf_array_get_real(ctx, obj, 3);

	d0 = 0;
	d1 = 1;
	obj = pdf_dict_get(ctx, dict, PDF_NAME(Domain));
	if (obj)
	{
		d0 = pdf_array_get_real(ctx, obj, 0);
		d1 = pdf_array_get_real(ctx, obj, 1);
	}

	e0 = e1 = 0;
	obj = pdf_dict_get(ctx, dict, PDF_NAME(Extend));
	if (obj)
	{
		e0 = pdf_array_get_bool(ctx, obj, 0);
		e1 = pdf_array_get_bool(ctx, obj, 1);
	}

	pdf_sample_shade_function(ctx, shade, funcs, func, d0, d1);

	shade->u.l_or_r.extend[0] = e0;
	shade->u.l_or_r.extend[1] = e1;
}

void
pdf_clear_annot_ink_list(fz_context *ctx, pdf_annot *annot)
{
	check_allowed_subtypes(ctx, annot, PDF_NAME(InkList), ink_list_subtypes);
	pdf_dict_del(ctx, annot->obj, PDF_NAME(InkList));
	pdf_dirty_annot(ctx, annot);
}

int
pdf_annot_quad_point_count(fz_context *ctx, pdf_annot *annot)
{
	pdf_obj *quad_points;
	check_allowed_subtypes(ctx, annot, PDF_NAME(QuadPoints), quad_point_subtypes);
	quad_points = pdf_dict_get(ctx, annot->obj, PDF_NAME(QuadPoints));
	return pdf_array_len(ctx, quad_points) / 8;
}

void pdf_set_annot_opacity(fz_context *ctx, pdf_annot *annot, float opacity)
{
	if (opacity != 1)
		pdf_dict_put_real(ctx, annot->obj, PDF_NAME(CA), opacity);
	else
		pdf_dict_del(ctx, annot->obj, PDF_NAME(CA));
	pdf_dirty_annot(ctx, annot);
}

int pdf_xobject_transparency(fz_context *ctx, pdf_obj *xobj)
{
	pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
	if (group)
		if (pdf_name_eq(ctx, pdf_dict_get(ctx, group, PDF_NAME(S)), PDF_NAME(Transparency)))
			return 1;
	return 0;
}