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/* Hey Emacs this is -*- C -*-

* $Id: emf.trm,v 1.59 2009/03/26 00:49:19 sfeam Exp $

/* GNUPLOT - emf.trm */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or without fee is hereby granted,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

* This file is included by ../term.c and ../docs/termdoc.c.

* This terminal driver supports:

* Enhanced Metafile Format

* TODO

* HISTORY

* 4.3.1 12-Sep-2008 Ethan A Merritt

* - enhanced text mode

* - Two variants are here. One uses the TA_UPDATECP mode to track character position.

* This works great horizontally, but I could not find a way to introduce a vertical

* offset to handle subscripts and superscripts.

* - The second variant tracks both x and y by estimating the character width/height.

* This causes visible imperfections in the character spacing.

* - Rotated enhanced text not yet supported

* 1.0.11 06-Dec-2004 Ethan A Merritt

* - implement term->set_color(), term->filled_polygon(), and term->fillbox()

* RGB colors supported, but not yet PM3D palettes

* 1.0.10 08-Jul-2004 Hans-Bernhard Broeker

* - cleaned up to match gnuplot CodeStyle conventions (one line per statement,

* even in macro bodies, no meddling with assert()).

* - purged K&R definitions

* 1.0.9 03-Jun-2004 Stephane Barbaray <stephane.barbaray@compodata.com>, Ethan Merritt <merritt@u.washington.edu>

* - fixed linewidth bug

* - all is now really assumed as 1024x768@96dpi,

* before it was a mix between 1600x1200@120dpi and 1024x768@96dpi,

* so font may now render differently than before...

* - pointsize rework (size twice also now)

* - HCHAR and VCHAR are more efficiently computed

* 1.0.8 06-May-2004 Stephane Barbaray <stephane.barbaray@compodata.com>

* - fixed to work with MS security patch (kb835732) applied, because MS introduced bugs!!!

* - EMR_EXTTEXTOUTW (84) is now EMR_EXTTEXTOUTA (83)

* 1.0.7 3-Feb-2003 Ethan A Merritt

* - modify text and point color handling to match other terminal types

* - FIXME! alignment of rotated text is not correct.

* 1.0.6 25-Jul-2002 Ethan A Merritt <merritt@u.washington.edu>

* - generalized text rotation and justification

* 1.0.5 2000/07/20

* - Handles were not freed at all, resulting to resource leaks when viewing on Windows 9x (not on NT4/W2000!!!)

* 1.0.4 2000/06/28

* - Emulated dashed vectors are now looking better

* - 15 colors * 8 pointstyles = 120 pointtypes

* 1.0.3 2000/03/29

* - default font is now Arial 12

* - implemented options (color/mono,dashed/solid,font)

* - 15 colors * 5 dashtypes = 75 linetypes

* 1.0.2 2000/03/22

* - Polygon and Polyline structures are not working for Windows 9X, I

* really don't know why, replaced with lineto/moveto couples...

* - Texts are now displayed in GM_Compatible mode because GM_Advanced is

* displaying correctly but it does not print correctly with Word97!

* - Text centering now works best according to escapement/orientation

* - Now there is 8 colors * 5 dashtypes = 40 linetypes

* - Successfully Working on Linux Suse 6.1 (x86)

* 1.0.1 2000/03/16

* - Unicode text have be to long aligned in EMF files (exttextoutw)

* - Problems with text transparence (SetBkMode was not called)

* - Null brush created for *not* filling polygon

* 1.0.0 2000/03/15

* - Only tested on x86 Win32

* AUTHOR

* Stephane Barbaray <stephane.barbaray@compodata.com>

* Some code based on cgm.trm

* send your comments or suggestions to (gnuplot-info@lists.sourceforge.net).

#include "driver.h"

#ifdef TERM_REGISTER

register_term(emf)

#endif

#ifdef TERM_PROTO

TERM_PUBLIC void EMF_options __PROTO((void));

TERM_PUBLIC void EMF_init __PROTO((void));

TERM_PUBLIC void EMF_reset __PROTO((void));

TERM_PUBLIC void EMF_text __PROTO((void));

TERM_PUBLIC void EMF_graphics __PROTO((void));

TERM_PUBLIC void EMF_move __PROTO((unsigned int x, unsigned int y));

TERM_PUBLIC void EMF_dashed_vector __PROTO((unsigned int ux, unsigned int uy));

TERM_PUBLIC void EMF_solid_vector __PROTO((unsigned int ux, unsigned int uy));

TERM_PUBLIC void EMF_linetype __PROTO((int linetype));

TERM_PUBLIC void EMF_linecolor __PROTO((int color));

TERM_PUBLIC void EMF_dashtype __PROTO((int dashtype));

TERM_PUBLIC void EMF_linewidth __PROTO((double width));

TERM_PUBLIC void EMF_put_text __PROTO((unsigned int x, unsigned int y, const char *str));

TERM_PUBLIC int EMF_text_angle __PROTO((int ang));

TERM_PUBLIC int EMF_justify_text __PROTO((enum JUSTIFY mode));

TERM_PUBLIC void EMF_point __PROTO((unsigned int x, unsigned int y, int number));

TERM_PUBLIC void EMF_set_pointsize __PROTO((double size));

TERM_PUBLIC int EMF_set_font __PROTO((const char *));

TERM_PUBLIC int EMF_make_palette __PROTO((t_sm_palette *palette));

TERM_PUBLIC void EMF_previous_palette __PROTO((void));

TERM_PUBLIC void EMF_set_color __PROTO((t_colorspec *colorspec));

TERM_PUBLIC void EMF_filled_polygon __PROTO((int, gpiPoint *));

TERM_PUBLIC void EMF_fillbox __PROTO((int, unsigned int, unsigned int, unsigned int, unsigned int));

/* Enhanced text support */

TERM_PUBLIC void ENHemf_put_text __PROTO((unsigned int x, unsigned int y, const char *str));

TERM_PUBLIC void ENHemf_OPEN __PROTO((char * fontname, double fontsize,

double base, TBOOLEAN widthflag, TBOOLEAN showflag,

int overprint));

TERM_PUBLIC void ENHemf_FLUSH __PROTO((void));

#undef RGB

#define RGB(r,g,b) ((long) \

(((unsigned char)(r) \

| ((short) ((unsigned char) (g)) << 8)) \

| (((long) (unsigned char) (b)) << 16)))

#ifndef GPMIN

# define GPMIN(a,b) (a < b ? a : b)

#endif

#ifndef GPMAX

# define GPMAX(a,b) (a > b ? a : b)

#endif

#define EMF_PX2HM 26.37

#define EMF_PT2HM 35.28

#define EMF_10THDEG2RAD (3.14159265359/1800)

#define EMF_XMAX (1024 * EMF_PX2HM)

#define EMF_YMAX (768 * EMF_PX2HM)

#define EMF_HTIC (EMF_XMAX / 160)

#define EMF_VTIC EMF_HTIC

#define EMF_FONTNAME "Arial"

#define EMF_FONTSIZE 12

#define EMF_HCHAR ((EMF_FONTSIZE * EMF_PT2HM) * 0.6)

#define EMF_VCHAR ((EMF_FONTSIZE * EMF_PT2HM) * 1.3)

#define EMF_LINE_TYPES 5 /* number of line types we support */

#define EMF_COLORS 15 /* number of colors we support */

#define EMF_POINTS 13 /* number of markers we support */

#define EMF_MAX_SEGMENTS 104 /* maximum # polyline coordinates */

#define EMF_HANDLE_PEN 1

#define EMF_HANDLE_FONT 2

#define EMF_HANDLE_BRUSH 3

#define EMF_HANDLE_MAX 4

#define EMF_STOCK_OBJECT_FLAG ((unsigned long)0x1 << 31)

#define EMF_STOCK_OBJECT_WHITE_BRUSH (EMF_STOCK_OBJECT_FLAG + 0x00)

#define EMF_STOCK_OBJECT_BLACK_PEN (EMF_STOCK_OBJECT_FLAG + 0x07)

#define EMF_STOCK_OBJECT_DEFAULT_FONT (EMF_STOCK_OBJECT_FLAG + 0x0A)

#define EMF_write_emr(type, size) { \

EMF_write_long(type); \

EMF_write_long(size); \

emf_record_count++; \

}

#define EMF_write_sizel(width, height) { \

EMF_write_long(width); \

EMF_write_long(height); \

}

#define EMF_write_points(x, y) { \

EMF_write_short(x); \

EMF_write_short(y); \

}

#define EMF_write_pointl(x, y) { \

EMF_write_long(x); \

EMF_write_long(y); \

}

#define EMF_write_rectl(left, top, right, bottom) { \

EMF_write_long(left); \

EMF_write_long(top); \

EMF_write_long(right); \

EMF_write_long(bottom); \

}

#define EMF_EOF() { \

EMF_write_emr(14, 20); \

EMF_write_long(0); \

EMF_write_long(0x10); \

EMF_write_long(20); \

}

#define EMF_SetMapMode(mode) { \

EMF_write_emr(17, 0x0C); \

EMF_write_long(mode); \

}

#define EMF_SetWindowExtEx(width, height) { \

EMF_write_emr(9, 0x10); \

EMF_write_sizel(width, height); \

}

#define EMF_SetWindowOrgEx(width, height) { \

EMF_write_emr(10, 0x10); \

EMF_write_sizel(width, height); \

}

#define EMF_SetViewportExtEx(width, height) { \

EMF_write_emr(11, 0x10); \

EMF_write_sizel(width, height); \

}

#define EMF_SetViewportOrgEx(width, height) { \

EMF_write_emr(12, 0x10); \

EMF_write_sizel(width, height); \

}

#define EMF_SetTextColor(color) { \

EMF_write_emr(24, 0x0C); \

EMF_write_long(color); \

}

#define EMF_MoveToEx(x,y) { \

EMF_write_emr(27, 0x10); \

EMF_write_pointl(x, y); \

}

#define EMF_LineTo(x,y) { \

EMF_write_emr(54, 0x10); \

EMF_write_pointl(x, y); \

}

#define EMF_CreatePen(handle, type, width, color) { \

EMF_write_emr(38, 0x1C); \

EMF_write_long(handle); \

EMF_write_long(type); \

EMF_write_long(width); \

EMF_write_long(0); \

EMF_write_long(color); \

}

#define EMF_CreateBrush(handle, type, color, hatch) { \

EMF_write_emr(39, 0x18); \

EMF_write_long(handle); \

EMF_write_long(type); \

EMF_write_long(color); \

EMF_write_long(hatch); \

}

#define EMF_SelectObject(handle) { \

EMF_write_emr(37, 0x0C); \

EMF_write_long(handle); \

}

#define EMF_DeleteObject(handle) { \

EMF_write_emr(40, 0x0C); \

EMF_write_long(handle); \

}

#define EMF_SetTextAlign(align) { \

EMF_write_emr(22, 0x0C); \

EMF_write_long(align); \

}

#define EMF_SetBkMode(mode) { \

EMF_write_emr(18, 0x0C); \

EMF_write_long(mode); \

}

#define EMF_SaveDC() { \

EMF_write_emr(33, 0x0C); \

EMF_write_long(0); \

}

#define EMF_RestoreDC() { \

EMF_write_emr(34, 0x0C); \

EMF_write_long(1); \

}

#define EMF_CreatePolygon(nvert) { \

EMF_write_emr(3, (7+2*nvert)*4); \

EMF_write_rectl(0,0,0,0); /* Bounds */ \

EMF_write_long(nvert); \

}

#endif /* TERM_PROTO */

#ifndef TERM_PROTO_ONLY

#ifdef TERM_BODY

#include <ctype.h> /* for isspace() */

static unsigned int emf_posx;

static unsigned int emf_posy;

static unsigned int emf_record_count = 0;

static unsigned int emf_linetype = 1;

static unsigned int emf_dashtype = 0;

static unsigned long emf_color = 0L;

static unsigned long emf_textcolor = LT_UNDEFINED;

static unsigned int emf_colors = EMF_COLORS;

static unsigned int emf_polyline[EMF_MAX_SEGMENTS]; /* stored polyline coordinates */

static unsigned int emf_graphics = FALSE;

static unsigned int emf_dashed = TRUE;

static unsigned int emf_monochrome = FALSE;

static double emf_linewidth; /* line width in plot units */

static double emf_linewidth_factor = 1.0;

static double emf_dashlength = 1.0;

static int emf_coords = 0; /* # polyline coordinates saved */

static char emf_fontname[255] = EMF_FONTNAME;

static float emf_fontsize = EMF_FONTSIZE;

static enum JUSTIFY emf_justify = LEFT;

static char emf_defaultfontname[255] = EMF_FONTNAME;

static float emf_defaultfontsize = EMF_FONTSIZE;

static int emf_vert_text = 0; /* text orientation -- nonzero for vertical */

static int emf_step_sizes[8]; /* array of currently used dash lengths in plot units */

static int emf_step_index = 0; /* index into emf_step_sizes[] */

static int emf_step = 0; /* amount of current dash not yet drawn, in plot units */

static int emf_tic, emf_tic707, emf_tic866, emf_tic500, emf_tic1241, emf_tic1077, emf_tic621; /* marker dimensions */

static TBOOLEAN emf_tweak = TRUE; /* Empirical hack to adjust character widths */

static void EMF_flush_polyline __PROTO((void));

static void EMF_flush_polygon __PROTO((void));

static void EMF_write_byte __PROTO((int));

static void EMF_write_short __PROTO((int));

static void EMF_write_long __PROTO((unsigned long));

static void EMF_write_float __PROTO((double));

static void EMF_setfont __PROTO((void));

#define ANSI_CHARSET 0

#define DEFAULT_CHARSET 1

#define GREEK_CHARSET 161

#define TURKISH_CHARSET 162

#define BALTIC_CHARSET 186

#define RUSSIAN_CHARSET 204

#define EASTEUROPE_CHARSET 238

#define KOI8_CHARSET 242

/* Text alignment */

#define GP_TA_NOUPDATECP 0x00

#define GP_TA_UPDATECP 0x01

#define GP_TA_LEFT 0x00

#define GP_TA_RIGHT 0x02

#define GP_TA_CENTER 0x06

#define GP_TA_TOP 0x00

#define GP_TA_BOTTOM 0x08

#define GP_TA_BASELINE 0x18

/* ExtTextOut options */

#define ETO_NO_RECT 0x100

#define ETO_PDY 0x2000

static void

EMF_setfont()

{

int i, count;

int bold = 400;

char italic = 0, underline = 0, strikeout = 0;

char font[32];

char *sub;

if (!emf_graphics)

return;

count = GPMIN (strlen(emf_fontname), 31);

if (((sub = strstr(emf_fontname, " bold")) != NULL)

|| ((sub = strstr(emf_fontname, " Bold")) != NULL)) {

bold = 700;

count = GPMIN(sub - emf_fontname, count);

}

if (((sub = strstr(emf_fontname, " italic")) != NULL)

|| ((sub = strstr(emf_fontname, " Italic")) != NULL)) {

italic = 1;

count = GPMIN(sub - emf_fontname, count);

}

if (((sub = strstr(emf_fontname, " underline")) != NULL)

|| ((sub = strstr(emf_fontname, " Underline")) != NULL)) {

underline = 1;

count = GPMIN(sub - emf_fontname, count);

}

if (((sub = strstr(emf_fontname, " strikeout")) != NULL)

|| ((sub = strstr(emf_fontname, " Strikeout")) != NULL)

|| ((sub = strstr(emf_fontname, " StrikeOut")) != NULL)

) {

strikeout = 1;

count = GPMIN(sub - emf_fontname, count);

}

safe_strncpy(font, emf_fontname, count + 1);

EMF_SelectObject(EMF_STOCK_OBJECT_DEFAULT_FONT);

EMF_DeleteObject(EMF_HANDLE_FONT);

/* SB 20040506: was not complete size was 104, now it is 332 */

EMF_write_emr(82, 332);

EMF_write_long(EMF_HANDLE_FONT);

EMF_write_long((long) (-emf_fontsize * EMF_PT2HM)); /* height */

EMF_write_long(0); /* width */

EMF_write_long(emf_vert_text); /* escapement */

EMF_write_long(emf_vert_text); /* orientation */

EMF_write_long(bold); /* weight */

EMF_write_byte(italic); /* italic */

EMF_write_byte(underline); /* underline */

EMF_write_byte(strikeout); /* strikeout */

/* charset: could be extended? */

switch (encoding) {

case S_ENC_CP1250:

case S_ENC_ISO8859_2:

EMF_write_byte(EASTEUROPE_CHARSET);

break;

case S_ENC_KOI8_R:

case S_ENC_KOI8_U:

EMF_write_byte(KOI8_CHARSET);

break;

case S_ENC_CP1254:

case S_ENC_ISO8859_9:

EMF_write_byte(TURKISH_CHARSET);

break;

default:

EMF_write_byte(DEFAULT_CHARSET);

}

EMF_write_byte(0); /* out precision */

EMF_write_byte(0); /* clip precision */

EMF_write_byte(0); /* quality */

EMF_write_byte(0); /* pitch and family */

for (i = 0; i < 32; i++) {

/* face name (max 32) */

EMF_write_byte((char) (i < strlen(font) ? font[i] : 0));

EMF_write_byte(0);

}

/* SB 20040506: modification following */

for (i = 0; i < 64; i++) {

/* FULL face name (max 64) */

EMF_write_byte((char) (i < strlen(font) ? font[i] : 0));

EMF_write_byte(0);

}

for (i = 0; i < 32; i++) {

/* style name (max 32) */

EMF_write_byte(0);

}

EMF_write_long(0); /* version */

EMF_write_long(0); /* Style size */

EMF_write_long(0); /* Match */

EMF_write_long(0); /* reserved */

EMF_write_long(0); /* VendorId */

EMF_write_long(0); /* Culture */

for (i = 0; i < 10; i++)

EMF_write_byte(0); /* Panose (ignored) */

EMF_write_byte(0); /* pad (long aligned) */

/* SB 20040506: End of modification */

EMF_SelectObject(EMF_HANDLE_FONT);

}

static void

EMF_flush_polygon()

{

int i = 0;

if (emf_coords == 0)

return;

EMF_MoveToEx(emf_polyline[i++], term->ymax - emf_polyline[i++]);

while (i < emf_coords * 2)

EMF_LineTo(emf_polyline[i++], term->ymax - emf_polyline[i++]);

EMF_LineTo(emf_polyline[0], term->ymax - emf_polyline[1]);

emf_coords = 0;

}

static void

EMF_flush_polyline()

{

if (emf_coords == 0)

return;

if (emf_coords <= 2) {

EMF_MoveToEx(emf_polyline[0], term->ymax - emf_polyline[1]);

EMF_LineTo(emf_polyline[2], term->ymax - emf_polyline[3]);

} else {

int i = 0;

EMF_MoveToEx(emf_polyline[i++], term->ymax - emf_polyline[i++]);

while (i < emf_coords * 2)

EMF_LineTo(emf_polyline[i++], term->ymax - emf_polyline[i++]);

}

emf_coords = 0;

}

/* HBB 20040708: the following keep K&R argument types for now */

static void

EMF_write_byte(int value)

{

char c = value;

fwrite(&c, 1, 1, gpoutfile);

}

static void

EMF_write_short(int value)

{

short actual_value = value;

char c[2];

c[1] = (actual_value >> 8) & 255; /* convert to x86 order */

c[0] = actual_value & 255;

fwrite(c, 1, 2, gpoutfile);

}

static void

EMF_write_long(unsigned long value)

{

char c[4];

c[3] = (value >> 24) & 0xFFL; /* convert to x86 order */

c[2] = (value >> 16) & 0xFFL;

c[1] = (value >> 8) & 0xFFL;

c[0] = value & 0xFFL;

fwrite(c, 1, 4, gpoutfile);

}

/* FIXME HBB 20001103: this only works as given iff 'float' is the

* same format as on x86's, i.e. IEEE 4-byte floating point format */

static void

EMF_write_float(double value)

{

char c[4];

union {

long l;

float f;

} u;

u.f = value;

c[3] = (u.l >> 24) & 0xFFL; /* convert to x86 order */

c[2] = (u.l >> 16) & 0xFFL;

c[1] = (u.l >> 8) & 0xFFL;

c[0] = u.l & 0xFFL;

fwrite(c, 1, 4, gpoutfile);

}

TERM_PUBLIC void

EMF_options()

{

char *s;

/* Annoying hack to handle the case of 'set termoption' after */

/* we have already initialized the terminal. */

if (c_token != 2) {

term->xmax = EMF_XMAX;

term->ymax = EMF_YMAX;

emf_dashed = TRUE;

emf_monochrome = FALSE;

emf_tweak = TRUE;

}

while (!END_OF_COMMAND) {

if (almost_equals(c_token, "de$fault")) {

strcpy(emf_defaultfontname, EMF_FONTNAME);

emf_defaultfontsize = EMF_FONTSIZE;

emf_monochrome = FALSE;

emf_dashed = TRUE;

c_token++;

continue;

}

if (almost_equals(c_token, "m$onochrome")) {

emf_monochrome = TRUE;

c_token++;

continue;

}

if (almost_equals(c_token, "c$olor") || almost_equals(c_token, "c$olour")) {

emf_monochrome = FALSE;

c_token++;

continue;

}

if (almost_equals(c_token, "da$shed")) {

emf_dashed = TRUE;

c_token++;

continue;

}

if (equals(c_token, "dl") || almost_equals(c_token, "dashl$ength")) {

c_token++;

emf_dashlength = real_expression();

if (emf_dashlength < 0.5)

emf_dashlength = 1.0;

continue;

}

if (almost_equals(c_token, "s$olid")) {

emf_dashed = FALSE;

c_token++;

continue;

}

if (equals(c_token, "lw") || almost_equals(c_token, "linew$idth")) {

c_token++;

emf_linewidth_factor = real_expression();

if (emf_linewidth_factor < 0.1)

emf_linewidth_factor = 1.0;

continue;

}

if (almost_equals(c_token,"enh$anced")) {

c_token++;

term->put_text = ENHemf_put_text;

term->flags |= TERM_ENHANCED_TEXT;

continue;

} else if (almost_equals(c_token,"noenh$anced")) {

c_token++;

term->put_text = EMF_put_text;

term->flags &= ~TERM_ENHANCED_TEXT;

}

if (almost_equals(c_token,"nopro$portional")) {

c_token++;

emf_tweak = FALSE;

}

if (almost_equals(c_token, "si$ze")) {

int tempxmax = 1024;

int tempymax = 768;

c_token++;

if (!END_OF_COMMAND) {

tempxmax = real_expression();

if (equals(c_token, ",")) {

c_token++;

tempymax = real_expression();

}

if (tempxmax > 0)

term->xmax = tempxmax * EMF_PX2HM;

if (tempymax > 0)

term->ymax = tempymax * EMF_PX2HM;

term->h_tic = term->xmax / 160;

term->v_tic = term->h_tic;

continue;

}

if (equals(c_token, "font"))

c_token++;

/* Fall through to old-style bare font name */

if ((s = try_to_get_string())) {

char *comma = strrchr(s,',');

if (comma && (1 == sscanf(comma+1,"%g",&emf_defaultfontsize))) {

*comma = '\0';

}

if (*s)

strncpy(emf_defaultfontname, s, sizeof(emf_defaultfontname));

free(s);

if (isanumber(c_token)) {

emf_defaultfontsize = int_expression();

}

continue;

}

break;

} /* while(!end of command) */

if (!END_OF_COMMAND) {

/* We have old-style bare font size specified */

emf_defaultfontsize = int_expression();

}

EMF_set_font(NULL); /* set default font */

emf_colors = emf_monochrome ? 1 : EMF_COLORS;

sprintf(term_options, "%s %s \"%s\" %g",

emf_monochrome ? "monochrome" : "color",

emf_dashed ? "dashed" : "solid",

emf_defaultfontname, emf_defaultfontsize);

if (term->flags & TERM_ENHANCED_TEXT)

strcat(term_options, " enhanced ");

if (term->xmax != (int)EMF_XMAX || term->ymax != (int)EMF_YMAX)

sprintf(&(term_options[strlen(term_options)]), " size %d,%d ",

(int)(0.5+term->xmax/EMF_PX2HM), (int)(0.5+term->ymax/EMF_PX2HM));

if (emf_linewidth_factor != 1.0)

sprintf(&(term_options[strlen(term_options)]), " lw %.1f",

emf_linewidth_factor);

if (emf_dashlength != 1.0)

sprintf(&(term_options[strlen(term_options)]), " dashlength %.1f",

emf_dashlength);

}

TERM_PUBLIC void

EMF_init()

{

emf_posx = emf_posy = 0;

emf_linetype = 0;

emf_vert_text = 0;

emf_graphics = FALSE;

}

TERM_PUBLIC void

EMF_graphics()

{

int width = 0.5 + term->xmax/EMF_PX2HM;

int height = 0.5 + term->ymax/EMF_PX2HM;

int mmwidth = 0.5 + (term->xmax/EMF_PX2HM) * (270./1024.);

int mmheight = 0.5 + (term->ymax/EMF_PX2HM) * (200./768.);

/* header start */

emf_record_count = 0;

EMF_write_emr(1, 100);

EMF_write_long(0); /* rclBounds */

EMF_write_long(0);

EMF_write_long(term->xmax / EMF_PX2HM);

EMF_write_long(term->ymax / EMF_PX2HM);

EMF_write_long(0); /* rclFrame */

EMF_write_long(0);

EMF_write_long(term->xmax);

EMF_write_long(term->ymax);

EMF_write_long(0x464D4520); /* signature */

EMF_write_long(0x00010000); /* version */

EMF_write_long(0); /* nBytes */

EMF_write_long(0); /* nRecords */

EMF_write_short(EMF_HANDLE_MAX); /* nHandles, MUST NOT BE 0 */

EMF_write_short(0); /* reserved */

EMF_write_long(0); /* descSize */

EMF_write_long(0); /* descOff */

EMF_write_long(0); /* nPalEntries */

EMF_write_long(width); /* ref dev pixwidth, default 1024 */

EMF_write_long(height); /* ref dev pixheight, default 768 */

EMF_write_long(mmwidth); /* ref dev mwidth, default 270 */

EMF_write_long(mmheight); /* ref dev mheight, default 200 */

EMF_write_long(0); /* cbPixelFormat */

EMF_write_long(0); /* offPixelFormat */

EMF_write_long(0); /* bOpenGL */

emf_graphics = TRUE;

/* header end */

EMF_SetMapMode(8); /* forcing anisotropic mode */

EMF_SetWindowExtEx(term->xmax, term->ymax); /* setting logical (himetric) size */

EMF_SetViewportExtEx(term->xmax / EMF_PX2HM, term->ymax / EMF_PX2HM); /* setting device (pixel) size */

EMF_CreatePen(EMF_HANDLE_PEN, 0, 1, 0x000000); /* init default pen */

EMF_SelectObject(EMF_HANDLE_PEN);

EMF_SetBkMode(1); /* transparent background for text */

EMF_CreateBrush(EMF_HANDLE_BRUSH, 1, 0, 0); /* transparent brush for polygons */

EMF_SelectObject(EMF_HANDLE_BRUSH);

EMF_set_font(NULL); /* init default font */

}

TERM_PUBLIC int

EMF_set_font(const char *font)

{

static float last_fontsize = -1;

static char last_fontname[256] = {'\0'};

if (font && *font) {

float tempsize;

int sep = strcspn(font,",");

if (sep > 0)

safe_strncpy(emf_fontname, font, GPMIN(sep + 1, 32));

if (sep < strlen(font) && sscanf(font+sep+1, "%f", &tempsize))

emf_fontsize = tempsize;

} else {

strcpy(emf_fontname, emf_defaultfontname);

emf_fontsize = emf_defaultfontsize;

}

/* Optimization only */

if (!strcmp(last_fontname,emf_fontname) && last_fontsize == emf_fontsize) {

return TRUE;

}

term->h_char = (emf_fontsize * EMF_PT2HM)*0.6;

term->v_char = (emf_fontsize * EMF_PT2HM)*1.3;

EMF_setfont();

return TRUE;

}

TERM_PUBLIC void

EMF_text()

{

long pos;

EMF_flush_polyline();

/* writing end of metafile */

EMF_SelectObject(EMF_STOCK_OBJECT_DEFAULT_FONT);

EMF_DeleteObject(EMF_HANDLE_FONT);

EMF_SelectObject(EMF_STOCK_OBJECT_BLACK_PEN);

EMF_DeleteObject(EMF_HANDLE_PEN);

EMF_SelectObject(EMF_STOCK_OBJECT_WHITE_BRUSH);

EMF_DeleteObject(EMF_HANDLE_BRUSH);

EMF_EOF();

/* updating header */

pos = ftell(gpoutfile);

fseek(gpoutfile, 48, SEEK_SET);

EMF_write_long(pos);

EMF_write_long(emf_record_count);

/* HBB 20010228: have to make known that we're no longer in graphics

* status. */

emf_graphics = FALSE;

}

TERM_PUBLIC void

EMF_linetype(int linetype)

{

/* Note : separating linetype and color would have not been futile, but anyway... */

#if (0) /* Not safe because linetype/color/pen are intermixed */

if (linetype == emf_linetype)

return;

#endif

if (linetype == LT_NODRAW)

linetype = LT_BACKGROUND;

emf_linetype = linetype;

EMF_linecolor(linetype);

EMF_dashtype(linetype);

}

TERM_PUBLIC void

EMF_linecolor(int linecolor)

{

static long GPFAR color_table_data[] =

{

RGB(255, 0, 0), /* red */

RGB(0, 255, 0), /* green */

RGB(0, 0, 255), /* blue */

RGB(255, 0, 255), /* magenta */

RGB(0, 0, 128), /* dark blue */

RGB(128, 0, 0), /* dark red */

RGB(0, 128, 128), /* dark cyan */

RGB(0, 0, 0), /* black */

RGB(128, 128, 128), /* grey */

RGB(0, 128, 64), /* very dark cyan */

RGB(128, 128, 0), /* dark yellow */

RGB(128, 0, 128), /* dark magenta */

RGB(192, 192, 192), /* light grey */

RGB(0, 255, 255), /* cyan */

RGB(255, 255, 0) /* yellow */

};

if (linecolor == LT_BACKGROUND)

emf_color = RGB(255, 255, 255); /* white (background) */

else {

linecolor = (linecolor < 0 || emf_monochrome) ? 7 : (linecolor % EMF_COLORS);

emf_color = color_table_data[linecolor];

}

EMF_flush_polyline();

}

TERM_PUBLIC int EMF_make_palette(t_sm_palette *palette)

{

return 0; /* can do continous colors */

}

TERM_PUBLIC void EMF_previous_palette()

{

/* do nothing */

}

TERM_PUBLIC void

EMF_set_color(t_colorspec *colorspec)

{

rgb255_color rgb255;

if (colorspec->type == TC_LT) {

EMF_linecolor(colorspec->lt);

} else if (colorspec->type == TC_FRAC) {

rgb255maxcolors_from_gray(colorspec->value, &rgb255);

emf_color = RGB(rgb255.r, rgb255.g, rgb255.b);

} else if (colorspec->type == TC_RGB) {

emf_color = RGB( colorspec->lt >> 16 & 0xff,

colorspec->lt >> 8 & 0xff,

colorspec->lt & 0xff );

}

else {

fprintf(stderr, "unhandled colorspec type %d\n", colorspec->type);

}

/* Force reevaluation of dash type */

emf_dashtype = LT_UNDEFINED;

EMF_dashtype(emf_linetype);

}

TERM_PUBLIC void

EMF_filled_polygon(int points, gpiPoint *corners)

{

int i;

unsigned long color = emf_color;

int fillpar = corners->style >> 4;

int style = corners->style & 0xf;

switch (style) {

case FS_EMPTY: /* fill with background color */

color = RGB(255,255,255);

break;

case FS_PATTERN: /* pattern fill implemented as partial density */

fillpar *= 12;

case FS_SOLID: /* solid fill */

if (fillpar >= 0 && fillpar < 100) {

double density = (double)fillpar / 100.;

color = ((int)((double)((emf_color>>16)&0xff)*density) << 16)

+ ((int)((double)((emf_color>>8)&0xff)*density) << 8)

+ ((int)((double)(emf_color&0xff)*density));

color += ((int)(255.*(1.-density)) << 16)

+ ((int)(255.*(1.-density)) << 8)

+ ((int)(255.*(1.-density)));

}

break;

default:

break;

}

/* Sequence of operations cribbed from Windows example */

EMF_CreateBrush(EMF_HANDLE_BRUSH, 0, color, 0);

EMF_SelectObject(EMF_HANDLE_BRUSH);

EMF_CreatePolygon(points);

for (i=0; i<points; i++)

EMF_write_pointl(corners[i].x, term->ymax - corners[i].y);

EMF_DeleteObject(EMF_HANDLE_BRUSH);

/* Force re-evaluation of linetype next time we draw a line */

emf_linetype = LT_UNDEFINED;

emf_dashtype = LT_UNDEFINED;

}

TERM_PUBLIC void

EMF_fillbox(int style, unsigned int x1, unsigned int y1, unsigned int width, unsigned int height)

{

gpiPoint corner[4];

corner[0].x = x1; corner[0].y = y1;

corner[1].x = x1+width; corner[1].y = y1;

corner[2].x = x1+width; corner[2].y = y1+height;

corner[3].x = x1; corner[3].y = y1+height;

corner->style = style;

EMF_filled_polygon(4, corner);

}

TERM_PUBLIC void

EMF_linewidth(double width)

{

int current_dashtype = emf_dashtype;

width *= emf_linewidth_factor;

if (width == emf_linewidth)

return;

emf_linewidth = width;

emf_dashtype = LT_UNDEFINED; /* Invalidate current dash type */

EMF_dashtype(current_dashtype); /* Force re-evaluation of dash type */

}

* Resets _both_ line color and dash type!

TERM_PUBLIC void

EMF_dashtype(int dashtype)

{

int i, j;

/* Each group of 8 entries in dot_length[] defines a dash

pattern. Entries in each group are alternately length of

whitespace and length of line, in units of 2/3 of the

linewidth. */

static int dot_length[EMF_LINE_TYPES * 8] =

{ /* 0 - solid */

5, 8, 5, 8, 5, 8, 5, 8, /* 1 - dashes */

4, 2, 4, 2, 4, 2, 4, 2, /* 2 - dotted */

4, 8, 4, 2, 4, 8, 4, 2, /* 3 - dash-dot */

4, 9, 4, 2, 4, 2, 0, 0, /* 4 - dash-dot-dot */

};

emf_dashtype = dashtype;

EMF_flush_polyline();

if (dashtype >= 0)

dashtype = (dashtype / emf_colors) % EMF_LINE_TYPES;

if (dashtype == LT_AXIS)

dashtype = 2;

if (dashtype < 1 || !emf_dashed) { /* solid mode */

EMF_SelectObject(EMF_STOCK_OBJECT_BLACK_PEN);

View remainder of file in raw view

gnuplot-old/term/emf.trm at gnuplot-4-4-alpha · gnuplot/gnuplot-old · GitHub

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