hpgs_reader_st Struct Reference [Reader]

A HPGL interpreter. More...

#include <hpgsreader.h>

Data Fields
hpgs_istream *	in
hpgs_device *	device
hpgs_device *	plotsize_device
int	current_page
int	verbosity
double	lw_factor
hpgs_point	P1
hpgs_point	P2
hpgs_point	delta_P
int	rotation
int	rop3
hpgs_bool	src_transparency
hpgs_bool	pattern_transparency
hpgs_matrix	world_matrix
double	world_scale
hpgs_matrix	page_matrix
double	page_scale
hpgs_matrix	total_matrix
double	total_scale
int	page_mode
double	page_width
double	page_height
double	page_angle
double	page_border
hpgs_bbox	page_bbox
hpgs_bbox	content_bbox
void *	page_asset_ctxt
hpgs_reader_asset_func_t	page_asset_func
void *	frame_asset_ctxt
hpgs_reader_asset_func_t	frame_asset_func
hpgs_color	min_color
hpgs_color	max_color
int	polygon_mode
int	polygon_open
int	pen_width_relative
int	pen_down
int	current_pen
int	current_linetype
int	absolute_plotting
int	have_current_point
hpgs_point	current_point
hpgs_point	first_path_point
hpgs_point	min_path_point
hpgs_point	max_path_point
hpgs_point	anchor_point
int	current_ft
double	ft3_angle
double	ft3_spacing
double	ft4_angle
double	ft4_spacing
double	ft10_level
int	alternate_font
double	pcl_scale
double	pcl_hmi
double	pcl_vmi
hpgs_point	pcl_point
hpgs_reader_pcl_bitmap_font **	pcl_bitmap_fonts
size_t	pcl_bitmap_fonts_alloc_size
size_t	pcl_bitmap_fonts_size
int	pcl_current_bitmap_font_id
hpgs_reader_pcl_bitmap_font *	pcl_current_bitmap_font
hpgs_reader_pcl_bitmap_font *	pcl_primary_bitmap_font
int	pcl_current_character_code
hpgs_reader_pcl_palette **	pcl_palettes
size_t	pcl_n_palettes
int	pcl_i_palette
int	pcl_pattern
hpgs_palette_color	pcl_foreground_color
int	pcl_raster_mode
int	pcl_raster_presentation
int	pcl_raster_src_width
int	pcl_raster_src_height
int	pcl_raster_dest_width
int	pcl_raster_dest_height
int	pcl_raster_res
int	pcl_raster_compression
int	pcl_raster_y_offset
int	pcl_raster_plane
int	pcl_raster_line
unsigned char *	pcl_raster_data [8]
int	pcl_raster_data_size
int	pcl_raster_planes
hpgs_image *	pcl_image
int	png_dump_count
char *	png_dump_filename
int	clipsave_depth
int	last_byte
int	bytes_ignored
int	eoc
hpgs_bool	interrupted
double	x_size
double	y_size
double	frame_x
double	frame_y
int	sc_type
double	sc_xmin
double	sc_xmax
double	sc_ymin
double	sc_ymax
double	sc_left
double	sc_bottom
int	linetype_nsegs [17]
float	linetype_segs [17][20]
int	npens
double *	pen_widths
hpgs_color *	pen_colors
char	label_term
int	label_term_ignore
hpgs_reader_poly_point *	poly_buffer
int	poly_buffer_size
int	poly_buffer_alloc_size
int	default_encoding
int	default_face
int	default_spacing
double	default_pitch
double	default_height
int	default_posture
int	default_weight
int	alternate_encoding
int	alternate_face
int	alternate_spacing
double	alternate_pitch
double	alternate_height
int	alternate_posture
int	alternate_weight
hpgs_point	cr_point
hpgs_point	current_char_size
hpgs_point	current_extra_space
double	current_slant
int	current_label_origin
int	current_text_path
int	current_text_line
double	current_label_angle

---

Detailed Description

A HPGL interpreter.

This structure holds all the states used during the interpretation of a HPGL stream. Users of the library usually don't have to cope with details of this structure.

---

Field Documentation

int hpgs_reader_st::absolute_plotting

Are PU and PD coordinates absoulte, because a PA statement is in effect?

int hpgs_reader_st::alternate_encoding

the text state for the alternate font.

int hpgs_reader_st::alternate_font

do we use the alternate font?

hpgs_point hpgs_reader_st::anchor_point

The anchor point for fill patterns.

int hpgs_reader_st::bytes_ignored

A byte counter for various purposes.

Referenced by hpgs_read(), hpgs_reader_do_PCL(), and hpgs_reader_do_PJL().

int hpgs_reader_st::clipsave_depth

how many clipsaves have been issued?

Referenced by hpgs_read().

hpgs_bbox hpgs_reader_st::content_bbox

The bounding box of the HPGL content of the current page.

Referenced by hpgs_new_reader().

hpgs_point hpgs_reader_st::cr_point

text attributes set through special commands.

int hpgs_reader_st::current_ft

The fill type currently in effect.

int hpgs_reader_st::current_linetype

Number of the current linetype.

int hpgs_reader_st::current_page

The number of the current page. -1...single page mode.

Referenced by hpgs_new_reader(), hpgs_read(), and hpgs_reader_imbue().

int hpgs_reader_st::current_pen

Number of the current pen.

Referenced by hpgs_reader_get_current_pen().

hpgs_point hpgs_reader_st::current_point

The current pen position in PostScript pt (1/72 inch), if have_current_point is true.

Referenced by hpgs_reader_do_PCL().

int hpgs_reader_st::default_encoding

the text state for the standard font.

hpgs_point hpgs_reader_st::delta_P

The difference of P2-P1 as set by the IP command.

hpgs_device* hpgs_reader_st::device

The current output device.

Referenced by hpgs_destroy_reader(), hpgs_new_reader(), hpgs_read(), hpgs_reader_imbue(), and hpgs_reader_stamp().

int hpgs_reader_st::eoc

Did we reach the end of a HPGL command?

Referenced by hpgs_read(), hpgs_reader_do_PCL(), hpgs_reader_do_PJL(), hpgs_reader_read_double(), hpgs_reader_read_int(), and hpgs_reader_read_new_string().

hpgs_point hpgs_reader_st::first_path_point

The first point in a path, if polygon_open is true.

void* hpgs_reader_st::frame_asset_ctxt

A callback for rendering additional frame assets before frame advance/showpage.

Referenced by hpgs_new_reader(), and hpgs_reader_set_frame_asset_func().

hpgs_reader_asset_func_t hpgs_reader_st::frame_asset_func

A callback for rendering additional frame asset before frame advance/showpage.

Referenced by hpgs_new_reader(), and hpgs_reader_set_frame_asset_func().

double hpgs_reader_st::frame_x

The frame advance vector in PostScript pt (1/72 inch).

double hpgs_reader_st::ft10_level

The current color level for fill type 10.

double hpgs_reader_st::ft3_angle

The current pattern angle of fill type 3.

double hpgs_reader_st::ft3_spacing

The current pattern spacing of fill type 3.

double hpgs_reader_st::ft4_angle

The current pattern angle of fill type 4.

double hpgs_reader_st::ft4_spacing

The current pattern spacing of fill type 4.

int hpgs_reader_st::have_current_point

Do we have a current pen position, aka current_point is a valid position.

hpgs_istream* hpgs_reader_st::in

The current input stream.

Referenced by hpgs_destroy_reader(), hpgs_new_reader(), hpgs_read(), hpgs_reader_attach(), hpgs_reader_do_PCL(), hpgs_reader_do_PJL(), hpgs_reader_imbue(), hpgs_reader_read_double(), hpgs_reader_read_int(), hpgs_reader_read_new_string(), and hpgs_reader_read_pcl_int().

hpgs_bool hpgs_reader_st::interrupted

Did someone call hpgs_reader_interrupt ?

Referenced by hpgs_new_reader(), hpgs_read(), hpgs_reader_do_PCL(), and hpgs_reader_interrupt().

char hpgs_reader_st::label_term

label terminator settings

int hpgs_reader_st::last_byte

The last byte extracted from the stream?

Referenced by hpgs_read(), hpgs_reader_do_PCL(), hpgs_reader_do_PJL(), hpgs_reader_read_double(), hpgs_reader_read_int(), hpgs_reader_read_new_string(), and hpgs_reader_read_pcl_int().

int hpgs_reader_st::linetype_nsegs[17]

linetype settings. (-8,...8) stored from 0...16

double hpgs_reader_st::lw_factor

The linewidth scaling factor.

Referenced by hpgs_new_reader(), and hpgs_reader_set_lw_factor().

hpgs_color hpgs_reader_st::max_color

The maximal RGB values.

hpgs_point hpgs_reader_st::max_path_point

The maximal x/y coordinates of all points in an open path.

hpgs_color hpgs_reader_st::min_color

The minimal RGB values.

hpgs_point hpgs_reader_st::min_path_point

The minimal x/y coordinates of all points in an open path.

int hpgs_reader_st::npens

pen settings

hpgs_point hpgs_reader_st::P1

HPGL frame point P1 in PostScript pt (1/72 inch).

hpgs_point hpgs_reader_st::P2

HPGL frame point P2 in PostScript pt (1/72 inch).

double hpgs_reader_st::page_angle

The rotation angle of the HPGL content on the page.

Referenced by hpgs_new_reader(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

void* hpgs_reader_st::page_asset_ctxt

A callback for rendering additional page assets before showpage.

Referenced by hpgs_new_reader(), and hpgs_reader_set_page_asset_func().

hpgs_reader_asset_func_t hpgs_reader_st::page_asset_func

A callback for rendering additional page assets before showpage.

Referenced by hpgs_new_reader(), and hpgs_reader_set_page_asset_func().

hpgs_bbox hpgs_reader_st::page_bbox

The currently active page bounding box.

Referenced by hpgs_new_reader(), hpgs_read(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

double hpgs_reader_st::page_border

The border of the HPGL border on the page.

Referenced by hpgs_new_reader(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

double hpgs_reader_st::page_height

The page height or the maximal page height in points.

Referenced by hpgs_new_reader(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

hpgs_matrix hpgs_reader_st::page_matrix

transformation matrix for the transformation of PostScript (world) coordinates usually given in points (1/72 inch) to user defined page-coorindates.

Referenced by hpgs_new_reader(), and hpgs_reader_do_PCL().

int hpgs_reader_st::page_mode

0...untransformed, 1...fixed page, 2...dynamic page

Referenced by hpgs_new_reader(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

double hpgs_reader_st::page_scale

sqrt(|det(page_matrix)|)

Referenced by hpgs_new_reader().

double hpgs_reader_st::page_width

The page width or the maximal page width in points.

Referenced by hpgs_new_reader(), hpgs_reader_set_dynamic_page(), and hpgs_reader_set_fixed_page().

hpgs_bool hpgs_reader_st::pattern_transparency

ROP3 pattern transparency.

hpgs_reader_pcl_bitmap_font** hpgs_reader_st::pcl_bitmap_fonts

The array of PCL bitmap fonts sorted by font ID.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

size_t hpgs_reader_st::pcl_bitmap_fonts_alloc_size

The allocated size of the bitmap font array.

Referenced by hpgs_new_reader().

size_t hpgs_reader_st::pcl_bitmap_fonts_size

The allocated size of the palette stack.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

hpgs_reader_pcl_bitmap_font* hpgs_reader_st::pcl_current_bitmap_font

The current PCL bitmap font use for font operations.

Referenced by hpgs_new_reader().

int hpgs_reader_st::pcl_current_bitmap_font_id

The ID of the current PCL bitmap font to use for font operations.

int hpgs_reader_st::pcl_current_character_code

The PCL character code of the next character to be assembled or -1, if not set.

hpgs_palette_color hpgs_reader_st::pcl_foreground_color

The currently set PCL forground color. Set to black, if no foreground color is set.

double hpgs_reader_st::pcl_hmi

PCL horizontal motion index in pt.

int hpgs_reader_st::pcl_i_palette

The number of of the current PCL palette on the stack.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

hpgs_image* hpgs_reader_st::pcl_image

The image currently filled by pcl.

Referenced by hpgs_destroy_reader(), hpgs_new_reader(), and hpgs_reader_do_PCL().

size_t hpgs_reader_st::pcl_n_palettes

The allocated size of the palette stack.

Referenced by hpgs_new_reader().

hpgs_reader_pcl_palette** hpgs_reader_st::pcl_palettes

The PCL palette stack of palettes for 256 colors.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

int hpgs_reader_st::pcl_pattern

The current PCL pattern. Default value 0.

hpgs_point hpgs_reader_st::pcl_point

PCL point position in pt.

Referenced by hpgs_reader_do_PCL().

hpgs_reader_pcl_bitmap_font* hpgs_reader_st::pcl_primary_bitmap_font

The primary PCL bitmap font being assembled.

Referenced by hpgs_new_reader(), and hpgs_reader_do_PCL().

int hpgs_reader_st::pcl_raster_compression

The PCL raster compression in effect.

unsigned char* hpgs_reader_st::pcl_raster_data[8]

The buffer for the data of the current raster. One pointer per plane.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

int hpgs_reader_st::pcl_raster_data_size

The size of the raster data buffer.

int hpgs_reader_st::pcl_raster_dest_height

The PCL raster image destination height.

int hpgs_reader_st::pcl_raster_dest_width

The PCL raster image destination width.

int hpgs_reader_st::pcl_raster_line

The number of the raster line currently transferred.

int hpgs_reader_st::pcl_raster_mode

The PCL ratser mode. -1 no raster graphics, 0 horizontal graphics, 3 vertical graphics

int hpgs_reader_st::pcl_raster_plane

The current PCL raster plane for transfer data by plane.

int hpgs_reader_st::pcl_raster_planes

The number of planes of the raster data currently being transferred.

int hpgs_reader_st::pcl_raster_presentation

The PCL raster presentation mode.

int hpgs_reader_st::pcl_raster_res

The PCL raster image resolution.

Referenced by hpgs_reader_do_PJL().

int hpgs_reader_st::pcl_raster_src_height

The PCL raster image source height.

int hpgs_reader_st::pcl_raster_src_width

The PCL raster image source width.

int hpgs_reader_st::pcl_raster_y_offset

The PCL raster y offset in effect.

double hpgs_reader_st::pcl_scale

The factor from PCL units to PostScript pt (1/72 inch).

Referenced by hpgs_reader_do_PJL().

double hpgs_reader_st::pcl_vmi

PCL vertical motion index in pt.

int hpgs_reader_st::pen_down

Is the pen down?

int hpgs_reader_st::pen_width_relative

Are pen widths specified relative?

hpgs_device* hpgs_reader_st::plotsize_device

The current plotsize device.

Referenced by hpgs_destroy_reader(), hpgs_new_reader(), hpgs_read(), and hpgs_reader_imbue().

int hpgs_reader_st::png_dump_count

The number of PCL images dumped so far.

Referenced by hpgs_new_reader(), and hpgs_reader_set_png_dump().

char* hpgs_reader_st::png_dump_filename

The base filename for dumped PCL images.

Referenced by hpgs_destroy_reader(), hpgs_new_reader(), and hpgs_reader_set_png_dump().

hpgs_reader_poly_point* hpgs_reader_st::poly_buffer

the polygon buffer used in polygon mode.

Referenced by hpgs_destroy_reader(), and hpgs_new_reader().

int hpgs_reader_st::polygon_mode

Are we in polygon mode?

int hpgs_reader_st::polygon_open

Is a polygon currently open?

int hpgs_reader_st::rop3

ROP3 operation in effect.

int hpgs_reader_st::rotation

The current rotation angle (90/180/270/360).

int hpgs_reader_st::sc_type

The current effective coordinate scaling of a SC command.

hpgs_bool hpgs_reader_st::src_transparency

ROP3 source transparency.

hpgs_matrix hpgs_reader_st::total_matrix

The concatenation of page_matrix and world_matrix.

double hpgs_reader_st::total_scale

sqrt(|det(page_matrix)|)

int hpgs_reader_st::verbosity

The verbosity level in effect.

Referenced by hpgs_new_reader(), hpgs_read(), and hpgs_reader_do_PJL().

hpgs_matrix hpgs_reader_st::world_matrix

transformation matrix for the transformation of HPGL to PostScript (world) coordinates usually given in points (1/72 inch).

double hpgs_reader_st::world_scale

sqrt(|det(world_matrix)|)

double hpgs_reader_st::x_size

The paper size in PostScript pt (1/72 inch).

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The documentation for this struct was generated from the following file:

• hpgsreader.h