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/* Hello, Emacs, this is -*-C-*- */
/* GNUPLOT - djsvga.trm */
/*[
* Copyright 1992 - 1993, 1998, 2004, 2018, 2020
*
* 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.
*
* This terminal driver supports:
* svga
*
* AUTHORS
* Russell Lang
* Edzer Pebesma (gnuplot 3.6: new terminal layout, fonts, grx20)
* Hans-Bernhard Broeker (several improvements)
* Bastian Märkisch (palette and RGB colors, dashed lines, enhanced text,
* filled polygons, color and pattern fill, image, terminal options,
* support MGRX fork, text encodings, interactive keyboard / mouse input,
* rotated plain text at arbitrary angles)
*
* send your comments or suggestions to (gnuplot-info@lists.sourceforge.net).
*
*/
#include "driver.h"
#ifdef TERM_REGISTER
register_term(djsvga) /* no ; */
#endif
#ifdef TERM_PROTO
#define DJSVGA_XMAX 640
#define DJSVGA_YMAX 480
#define DJSVGA_VCHAR 16
#define DJSVGA_HCHAR 8
#define DJSVGA_VTIC 4
#define DJSVGA_HTIC 4
TERM_PUBLIC void DJSVGA_init(void);
TERM_PUBLIC void DJSVGA_graphics(void);
TERM_PUBLIC void DJSVGA_text(void);
TERM_PUBLIC void DJSVGA_reset(void);
TERM_PUBLIC void DJSVGA_options(void);
TERM_PUBLIC void DJSVGA_linetype(int linetype);
TERM_PUBLIC void DJSVGA_dashtype(int type, t_dashtype *custom_dash_pattern);
TERM_PUBLIC void DJSVGA_move(unsigned int x, unsigned int y);
TERM_PUBLIC void DJSVGA_vector(unsigned int x, unsigned int y);
TERM_PUBLIC int DJSVGA_angle(float ang);
TERM_PUBLIC int DJSVGA_justify_text(enum JUSTIFY mode);
TERM_PUBLIC void DJSVGA_put_text(unsigned int x, unsigned int y,
const char *str);
TERM_PUBLIC int DJSVGA_set_font(const char *fontname);
TERM_PUBLIC void DJSVGA_suspend(void);
TERM_PUBLIC void DJSVGA_resume(void);
TERM_PUBLIC void DJSVGA_fillbox(int style, unsigned int x1,
unsigned int y1, unsigned int width,
unsigned int height);
TERM_PUBLIC void DJSVGA_linewidth(double linewidth);
TERM_PUBLIC void DJSVGA_enhanced_put_text(unsigned int x, unsigned int y, const char str[]);
TERM_PUBLIC void DJSVGA_enhanced_open(char * fontname, double fontsize,
double base, TBOOLEAN widthflag, TBOOLEAN showflag, int overprint);
TERM_PUBLIC void DJSVGA_enhanced_flush(void);
#ifdef USE_MOUSE
# if (defined(MGRX_XWIN) || defined(_WIN32))
TERM_PUBLIC int DJSVGA_waitforinput(int mode); /* only required for xwin and win32 */
# endif
TERM_PUBLIC void DJSVGA_put_tmptext(int location, const char str[]);
TERM_PUBLIC void DJSVGA_set_ruler(int x, int y);
TERM_PUBLIC void DJSVGA_set_cursor(int action, int x, int y);
#endif
#define GOT_DJSVGA_PROTO
#endif /* TERM_PROTO */
#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY
/* SVGA driver using DJGPP */
#ifdef DJSVGA_DEBUG
# undef FPRINTF
# define FPRINTF(a) fprintf a
#endif
#ifdef HAVE_MGRX
# include <mgrx.h>
# include <mgrxkeys.h>
#else
# include <grx20.h>
# include <grxkeys.h>
# define GRKBS_ALT GR_KB_ALT
# define GRKBS_SHIFT GR_KB_SHIFT
# define GRKBS_CTRL GR_KB_CTRL
#endif
#ifdef DJGPP
# include <pc.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#if defined(__linux__) && defined(HAVE_MGRX)
# define MGRX_XWIN
#endif
#if 0
/* FIXME: Saving colors causes memory corruption */
# define DJSVGA_SAVE_COLORS
#endif
static void DJSVGA_trim_font_string(const char * fontspec,
char * fontname, size_t fontnamesize);
static void DJSVGA_add_path_point(int x, int y); /* add a new point to current path or line */
static void DJSVGA_flush_line(void); /* finish a poly-line */
#ifdef USE_MOUSE
static TBOOLEAN grx_check_event(void);
#endif
static TBOOLEAN dj_initialized = FALSE;
static int dj_xlast, dj_ylast;
#define DJNUMCOLOR 15
static long dj_color;
static long svga256color[DJNUMCOLOR] =
/* old sequence: {7, 8, 2, 3, 4, 5, 9, 14, 12, 15, 13, 10, 11, 1, 6}; */
{
7 /*black*/, 8 /*grey*/,
#if 0 /* prefer dark colors */
4 /*dark red*/, 2 /*dark green*/, 1 /*dark blue*/, 5 /*dark magenta*/, 3 /*dark cyan*/,
14 /*yellow*/, 15 /*white*/,
12 /*red*/, 9 /*blue*/, 13 /*magenta*/, 10 /*green*/, 11 /*cyan*/,
6 /*brown*/
#else /* prefer light colors */
12 /*red*/, 10 /*green*/, 9 /*blue*/, 13 /*magenta*/, 11 /*cyan*/,
14 /*yellow*/, 15 /*white*/,
4 /*dark red*/, 1 /*dark blue*/, 5 /*dark magenta*/, 2 /*dark green*/, 3 /*dark cyan*/,
6 /*brown*/
#endif
};
static GrColor dj_colors[DJNUMCOLOR];
/* Save, Restore: for 16 color mode! */
#ifdef DJSVGA_SAVE_COLORS
static void *DJSVGA_colorbuf = NULL;
#endif
static GrTextOption DJSVGA_TextOption;
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
# define GRX_TXO_FGCOLOR txo_fgcolor
# define GRX_TXO_BGCOLOR txo_bgcolor
#else
# define GRX_TXO_FGCOLOR txo_fgcolor.v
# define GRX_TXO_BGCOLOR txo_bgcolor.v
#endif
#define DJSVGAFONTLEN PATH_MAX
static char DJSVGA_fontname[DJSVGAFONTLEN] = "";
static char DJSVGA_default_fontname[DJSVGAFONTLEN] = "";
static GrFont * DJSVGA_default_font = NULL;
static GrContext *DJSVGA_context = 0; /* save screen for suspend/resume */
#ifdef DJGPP
static char *dj_textsave = 0; /* for text-screen-saving */
static int dj_cursorx, dj_cursory;
static int dj_width, dj_height;
#endif
static enum JUSTIFY dj_justify;
static int dj_angle = 0;
static int dj_lastx = 0;
static int dj_lasty = 0;
static TBOOLEAN dj_in_path = FALSE;
#define DJSVGA_MAXPATH 400
static int dj_path[DJSVGA_MAXPATH][2];
static int dj_polygon_points = 0;
static double dj_linewidth; /* store linewidth assignments here */
static double dj_lwscale = 1.;
static double dj_pointscale = 1.;
static double dj_fontscale = 1.;
static int dj_dashpatlen = 0;
static unsigned char dj_dashpat[3*DASHPATTERN_LENGTH] = "";
/* Fill pattern copied from bitmap.c */
#define dj_fill_pattern_num 8
static char dj_fill_pattern_bitmaps[dj_fill_pattern_num][8] ={
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } /* no fill */
,{ 0x82, 0x44, 0x28, 0x10, 0x28, 0x44, 0x82, 0x01 } /* cross-hatch (1) */
,{ 0x88, 0x55, 0x22, 0x55, 0x88, 0x55, 0x22, 0x55 } /* double crosshatch(2) */
,{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } /* solid fill (3) */
,{ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 } /* diagonal stripes (4) */
,{ 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 } /* diagonal stripes (5) */
,{ 0x11, 0x11, 0x22, 0x22, 0x44, 0x44, 0x88, 0x88 } /* diagonal stripes (6) */
,{ 0x88, 0x88, 0x44, 0x44, 0x22, 0x22, 0x11, 0x11 } /* diagonal stripes (7) */
};
static GrPattern dj_pattern;
static long dj_background = 0; /* default to black */
#ifdef USE_MOUSE
static char dj_statusline[128] = "";
static int dj_ruler_x = -1;
static int dj_ruler_y = -1;
# ifdef MSDOS
static TBOOLEAN dj_processing_events = FALSE;
# endif
#endif
/* option names */
enum DJSVGA_id { DJSVGA_DEFAULTOPTIONS,
DJSVGA_FONT, DJSVGA_FONTSCALE,
DJSVGA_BACKGROUND,
DJSVGA_ENH, DJSVGA_NOENH,
DJSVGA_LINEWIDTH, DJSVGA_POINTSCALE,
DJSVGA_OTHER };
static struct gen_table DJSVGA_opts[] =
{
{ "def$ault", DJSVGA_DEFAULTOPTIONS },
{ "font", DJSVGA_FONT },
{ "backg$round", DJSVGA_BACKGROUND },
{ "enh$anced", DJSVGA_ENH },
{ "noe$nhanced", DJSVGA_NOENH },
{ "linewidth", DJSVGA_LINEWIDTH },
{ "lw", DJSVGA_LINEWIDTH },
{ "pointscale", DJSVGA_POINTSCALE },
{ "ps", DJSVGA_POINTSCALE},
{ "fontscale", DJSVGA_FONTSCALE },
{ "fs", DJSVGA_FONTSCALE },
{ NULL, DJSVGA_OTHER }
};
TERM_PUBLIC void
DJSVGA_options()
{
char *font = NULL;
while (!END_OF_COMMAND) {
switch ((enum DJSVGA_id) lookup_table(&DJSVGA_opts[0], c_token)) {
case DJSVGA_ENH:
c_token++;
term->put_text = DJSVGA_enhanced_put_text;
term->flags |= TERM_ENHANCED_TEXT;
break;
case DJSVGA_NOENH:
c_token++;
term->put_text = DJSVGA_put_text;
term->flags &= ~TERM_ENHANCED_TEXT;
break;
case DJSVGA_BACKGROUND:
c_token++;
dj_background = parse_color_name();
break;
case DJSVGA_LINEWIDTH:
c_token++;
dj_lwscale = real_expression();
if (dj_lwscale <= 0) dj_lwscale = 1.;
break;
case DJSVGA_POINTSCALE:
c_token++;
dj_pointscale = real_expression();
if (dj_pointscale <= 0.0) dj_pointscale = 1.;
break;
case DJSVGA_FONTSCALE:
c_token++;
dj_fontscale = real_expression();
if (dj_fontscale <= 0.0) dj_fontscale = 1.;
break;
case DJSVGA_FONT:
c_token++;
default:
font = try_to_get_string();
if (font != NULL) {
DJSVGA_trim_font_string(font, DJSVGA_default_fontname, sizeof(DJSVGA_default_fontname));
} else {
int_error(c_token, "Expect font string");
}
break;
}
}
sprintf(term_options,
"font \"%s\" "
"%senhanced "
"background rgb \"#%06lx\" "
"linewidth %.1f "
"pointscale %.1f "
"fontscale %.1f",
DJSVGA_default_fontname,
term->flags & TERM_ENHANCED_TEXT ? "" : "no",
dj_background,
dj_lwscale,
dj_pointscale,
dj_fontscale);
}
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
static GP_INLINE char
mgrx_default_encoding()
{
/* mimic MGRX init */
#ifdef MSDOS
return GRENC_CP437;
#elif defined(_WIN32)
return GRENC_CP1252;
#else
return GRENC_UTF_8;
#endif
}
static GP_INLINE char
mgrx_encoding()
{
switch (encoding) {
case S_ENC_CP437:
return GRENC_CP437;
case S_ENC_CP850:
return GRENC_CP850;
case S_ENC_CP1252:
return GRENC_CP1252;
case S_ENC_ISO8859_1:
return GRENC_ISO_8859_1;
case S_ENC_UTF8:
return GRENC_UTF_8;
case S_ENC_DEFAULT:
return mgrx_default_encoding();
default:
return mgrx_default_encoding() | 0x80;
}
}
#endif
static GP_INLINE GrFont *
grx_default_font(void)
{
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
return GrGetDefaultFont();
#else
return &GrDefaultFont;
#endif
}
TERM_PUBLIC void
DJSVGA_init()
{
int i, on, r, g, b, medium = 170, low = 85;
#ifdef DJGPP
/* HBB: save textscreen contents and cursor-position */
dj_textsave = gp_alloc(ScreenRows() * ScreenCols() * 2, "djsvga term scrbuf");
ScreenRetrieve(dj_textsave);
dj_width = ScreenCols();
dj_height = ScreenRows();
ScreenGetCursor(&dj_cursory, &dj_cursorx);
#endif
GrSetMode(GR_default_graphics);
GrSetRGBcolorMode();
GrResetColors();
/* Allocate colors */
for (i = 0; i < DJNUMCOLOR; i++) {
on = (svga256color[i] & 8) ? 255 : medium;
r = (svga256color[i] & 4) ? on : 0;
g = (svga256color[i] & 2) ? on : 0;
b = (svga256color[i] & 1) ? on : 0;
if (svga256color[i] == 8)
r = g = b = low;
dj_colors[i] = GrAllocColorID(r, g, b);
}
/* Get the screen size: */
dj_xlast = GrMaxX();
term->xmax = dj_xlast + 1;
dj_ylast = GrMaxY();
term->ymax = dj_ylast + 1;
#ifdef DJSVGA_SAVE_COLORS
if (DJSVGA_colorbuf == NULL)
DJSVGA_colorbuf = (void *) gp_alloc(GrColorSaveBufferSize(), "djsvga term colorbuf");
GrSaveColors(DJSVGA_colorbuf);
#endif
#ifdef MSDOS
GrSetMode(GR_default_text);
#endif
#ifdef DJGPP
ScreenUpdate(dj_textsave);
ScreenSetCursor(dj_cursory, dj_cursorx);
#endif
#if defined(USE_MOUSE) && !defined(MSDOS)
# ifdef HAVE_MGRX
GrEventInit();
GrEventGenExpose(GR_GEN_EXPOSE_NO); /* no X11 expose events */
GrEventGenMmove(GR_GEN_MMOVE_ALWAYS); /* create mouse move events */
# else
GrMouseInit();
# endif
#endif
dj_initialized = TRUE;
}
TERM_PUBLIC void
DJSVGA_graphics()
{
#ifdef MSDOS
# ifdef USE_MOUSE
if (!dj_processing_events) /* already in graphics mode? */
# endif
{
# ifdef DJGPP
ScreenRetrieve(dj_textsave); /* HBB: save text screen contents */
ScreenGetCursor(&dj_cursory, &dj_cursorx);
# endif
GrSetMode(GR_default_graphics);
}
#endif
#ifdef USE_MOUSE
DJSVGA_set_cursor(0, 0, 0);
GrMouseEraseCursor();
#endif
#ifdef DJSVGA_SAVE_COLORS
GrRestoreColors(DJSVGA_colorbuf);
#endif
GrClearContext(GrAllocColor2ID(dj_background));
/* initialize font */
DJSVGA_fontname[0] = NUL; /* enforce init */
DJSVGA_default_font = NULL;
if (!DJSVGA_set_font("") && DJSVGA_default_fontname[0] != NUL) {
fprintf(stderr, "svga error: could not load font \"%s\"\n", DJSVGA_default_fontname);
}
DJSVGA_TextOption.txo_direct = GR_TEXT_RIGHT;
DJSVGA_TextOption.txo_xalign = GR_ALIGN_LEFT;
DJSVGA_TextOption.txo_yalign = GR_ALIGN_CENTER;
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
GrSetUserEncoding(mgrx_encoding() & 0x7f);
/* Do not do any conversion if encoding is S_ENC_DEFAULT or unknown to MGRX. */
DJSVGA_TextOption.txo_chrtype =
((encoding != S_ENC_DEFAULT) && ((mgrx_encoding() & 0x80) == 0)) ?
GrGetChrtypeForUserEncoding() : GR_BYTE_TEXT;
DJSVGA_TextOption.txo_bgcolor = GrNOCOLOR;
FPRINTF((stderr, "user encoding: %i chartype: %i\n", GrGetUserEncoding(), DJSVGA_TextOption.txo_chrtype));
#else
DJSVGA_TextOption.txo_chrtype = GR_BYTE_TEXT;
DJSVGA_TextOption.txo_bgcolor.v = GrNOCOLOR;
#endif
dj_lastx = dj_lasty = 0;
#ifdef USE_MOUSE
dj_statusline[0] = NUL;
dj_ruler_x = dj_ruler_y = -1;
# ifdef MSDOS
# ifdef HAVE_MGRX
GrEventInit();
GrEventGenMmove(GR_GEN_MMOVE_ALWAYS); /* enable mouse move events */
# else
GrMouseInit();
# endif
# endif
#endif
}
TERM_PUBLIC void
DJSVGA_text()
{
#ifdef USE_MOUSE
/* signal that we are done */
exec_event(GE_plotdone, 0, 0, 0, 0, 0);
#endif
#ifdef MSDOS
# if defined(USE_MOUSE)
GrMouseDisplayCursor();
if (!dj_processing_events) {
/* Hack to let the gnuplot kernel do new plots */
term_graphics = FALSE;
dj_processing_events = TRUE;
while (dj_processing_events)
grx_check_event();
dj_processing_events = FALSE;
term_graphics = TRUE;
GrMouseEraseCursor();
# ifdef HAVE_MGRX
GrEventUnInit();
# else
GrMouseUnInit();
# endif
# if !defined(DJGPP) || defined(HAVE_MGRX)
GrSetMode(GR_NC_default_text);
# else
GrSetMode(GR_width_height_text, dj_width, dj_height);
# endif
# ifdef DJGPP
ScreenUpdate(dj_textsave); /* HBB: restore text screen */
ScreenSetCursor(dj_cursory, dj_cursorx);
# endif
}
# else /* !USE_MOUSE */
# ifdef DJGPP
(void) getkey();
# else
(void) fgetc(stdin);
# endif
# ifdef HAVE_MGRX
GrEventUnInit();
# else
GrMouseUnInit();
# endif
# if !defined(DJGPP) || defined(HAVE_MGRX)
GrSetMode(GR_NC_default_text);
# else
GrSetMode(GR_width_height_text, dj_width, dj_height);
# endif
# ifdef DJGPP
ScreenUpdate(dj_textsave); /* HBB: restore text screen */
ScreenSetCursor(dj_cursory, dj_cursorx);
# endif
# endif
#else
/* win32, xwin */
GrMouseDisplayCursor();
#endif
if (DJSVGA_default_font != NULL) {
GrUnloadFont(DJSVGA_default_font);
DJSVGA_default_font = NULL;
}
}
TERM_PUBLIC void
DJSVGA_reset()
{
#ifdef MSDOS
GrResetColors();
#endif
#ifdef DJGPP
free(dj_textsave);
#endif
dj_polygon_points = 0;
}
TERM_PUBLIC void
DJSVGA_linetype(int linetype)
{
DJSVGA_flush_line();
if (linetype < -2)
linetype = LT_BLACK;
if (linetype >= DJNUMCOLOR - 2)
linetype %= DJNUMCOLOR - 2;
/* HBB: set the TextOption color variable right here (faster) */
DJSVGA_TextOption.GRX_TXO_FGCOLOR = dj_color = dj_colors[linetype + 2];
if (linetype == LT_AXIS)
DJSVGA_dashtype(DASHTYPE_AXIS, NULL);
else
DJSVGA_dashtype(DASHTYPE_SOLID, NULL);
}
TERM_PUBLIC void
DJSVGA_dashtype(int type, t_dashtype *custom_dash_pattern)
{
DJSVGA_flush_line();
if (dj_dashpatlen > 0) {
dj_dashpat[0] = NUL;
dj_dashpatlen = 0;
}
if (type == DASHTYPE_AXIS) /* map axis dashpattern */
type = 1;
if (type > 0) {
const unsigned char dashstyles[4][8] = {
{ 16, 8, 0 }, /* dash */
{ 3, 3, 0 }, /* dot */
{ 8, 5, 3, 5, 0 }, /* dash dot */
{ 8, 4, 3, 4, 3, 4, 0 } /* dash dot dot */
};
const int dashstyle_len[4] = { 2, 2, 4, 6 };
int i;
type %= 5;
if (type > 0) {
dj_dashpatlen = dashstyle_len[type - 1];
/* scale dashpattern with linewidth, which is already set */
for (i = 0; i < dj_dashpatlen; i++)
dj_dashpat[i] = dashstyles[type - 1][i] * dj_linewidth;
}
} else if (type == DASHTYPE_SOLID) {
/* nothing to do */
} else if (type == DASHTYPE_CUSTOM) {
t_dashtype * dash = custom_dash_pattern;
int count = 0;
int i;
while ((dash->pattern[count] != 0.) && (count < DASHPATTERN_LENGTH))
count++;
dj_dashpatlen = count;
for (i = 0; i < dj_dashpatlen; i++)
dj_dashpat[i] = dash->pattern[i] + 0.5f;
}
}
TERM_PUBLIC int
DJSVGA_make_palette(t_sm_palette *palette)
{
return 0; /* can do RGB colors */
}
TERM_PUBLIC void
DJSVGA_color(t_colorspec *colorspec)
{
DJSVGA_flush_line();
switch (colorspec->type) {
case TC_LT: {
int linetype = colorspec->lt;
GrColor color = GrBlack();
if (linetype == LT_BACKGROUND) {
color = GrAllocColor2ID(dj_background);
} else if (linetype == LT_NODRAW) {
/* can this happen at all? */
FPRINTF((stderr, "Debug: linetype NODRAW!"));
} else {
if (linetype < -2)
linetype = LT_BLACK;
if (linetype >= DJNUMCOLOR - 2)
linetype %= DJNUMCOLOR - 2;
color = dj_colors[linetype + 2];
}
DJSVGA_TextOption.GRX_TXO_FGCOLOR = dj_color = color;
break;
}
case TC_FRAC: {
rgb255_color rgb255;
/* Translate palette index to RGB colour */
rgb255maxcolors_from_gray(colorspec->value, &rgb255);
DJSVGA_TextOption.GRX_TXO_FGCOLOR = dj_color = GrAllocColorID(rgb255.r, rgb255.g, rgb255.b);
break;
}
case TC_RGB: {
/* We just need to mask out the alpha channel. */
DJSVGA_TextOption.GRX_TXO_FGCOLOR = dj_color = GrAllocColor2ID(colorspec->lt & 0xffffff);
break;
}
default:
break;
}
}
TERM_PUBLIC void
DJSVGA_move(unsigned int x, unsigned int y)
{
/* terminate current path if we move to a disconnected position */
if (dj_polygon_points > 0) {
if ((dj_path[dj_polygon_points - 1][0] != x) ||
(dj_path[dj_polygon_points - 1][1] != dj_ylast - y)) {
DJSVGA_flush_line();
FPRINTF((stderr, "svga: disconnected path point %i, %i\n", x, dj_ylast - y));
} else {
return;
}
}
DJSVGA_add_path_point(x, dj_ylast - y);
dj_lastx = x;
dj_lasty = dj_ylast - y;
}
TERM_PUBLIC void
DJSVGA_vector(unsigned int x, unsigned int y)
{
if ((x != dj_lastx) || (dj_ylast - y != dj_lasty)) {
/* vector without preceding move as e.g. in "with line lc variable" */
if (dj_polygon_points == 0)
DJSVGA_add_path_point(dj_lastx, dj_lasty);
DJSVGA_add_path_point(x, dj_ylast - y);
}
dj_lastx = x;
dj_lasty = dj_ylast - y;
}
static void
DJSVGA_flush_line(void)
{
GrLineOption dj_lineoption =
{ dj_color, dj_linewidth * dj_lwscale,
dj_dashpatlen, dj_dashpatlen != 0 ? dj_dashpat : NULL };
if (dj_in_path)
dj_in_path = FALSE;
if (dj_polygon_points < 2) {
dj_polygon_points = 0;
return;
}
/* draw a line segment */
if (dj_polygon_points == 2) {
GrCustomLine(dj_path[0][0], dj_path[0][1],
dj_path[1][0], dj_path[1][1],
&dj_lineoption);
} else {
GrCustomPolyLine(dj_polygon_points, dj_path, &dj_lineoption);
}
dj_polygon_points = 0;
dj_in_path = FALSE;
}
TERM_PUBLIC int
DJSVGA_angle(float ang)
{
ang = fmod(ang, 360);
if (ang < 0) ang += 360;
dj_angle = ang;
if (ang < 45 || ang > 315)
DJSVGA_TextOption.txo_direct = GR_TEXT_RIGHT;
else if (ang < 135)
DJSVGA_TextOption.txo_direct = GR_TEXT_UP;
else if (ang <= 225)
DJSVGA_TextOption.txo_direct = GR_TEXT_LEFT;
else if (ang <= 315)
DJSVGA_TextOption.txo_direct = GR_TEXT_DOWN;
return TRUE;
}
TERM_PUBLIC int
DJSVGA_justify_text(enum JUSTIFY mode)
{
/* save for reference in enhanced text processing */
dj_justify = mode;
/* directly set yalign / xalign options */
if (DJSVGA_TextOption.txo_direct == GR_TEXT_RIGHT) {
DJSVGA_TextOption.txo_yalign = GR_ALIGN_CENTER;
switch (mode) {
case LEFT:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_LEFT;
break;
case CENTRE:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_CENTER;
break;
case RIGHT:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_RIGHT;
break;
}
} else if (DJSVGA_TextOption.txo_direct == GR_TEXT_UP) {
DJSVGA_TextOption.txo_xalign = GR_ALIGN_CENTER;
switch (mode) {
case LEFT:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_BOTTOM;
break;
case CENTRE:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_CENTER;
break;
case RIGHT:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_TOP;
break;
}
} else if (DJSVGA_TextOption.txo_direct == GR_TEXT_LEFT) {
DJSVGA_TextOption.txo_yalign = GR_ALIGN_CENTER;
switch (mode) {
case LEFT:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_RIGHT;
break;
case CENTRE:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_CENTER;
break;
case RIGHT:
DJSVGA_TextOption.txo_xalign = GR_ALIGN_LEFT;
break;
}
} else if (DJSVGA_TextOption.txo_direct == GR_TEXT_DOWN) {
DJSVGA_TextOption.txo_xalign = GR_ALIGN_CENTER;
switch (mode) {
case LEFT:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_TOP;
break;
case CENTRE:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_CENTER;
break;
case RIGHT:
DJSVGA_TextOption.txo_yalign = GR_ALIGN_BOTTOM;
break;
}
}
return TRUE;
}
static GP_INLINE void
DJSVGA_trim_font_string(const char * fontspec,
char * fontname, size_t fontnamesize)
{
char * cp;
safe_strncpy(fontname, fontspec, fontnamesize);
/* ignore font size and attributes */
cp = fontname;
while (*cp != NUL) {
if ((*cp == ',') || ((*cp == ':') && ((cp - fontname) != 1))) {
*cp = NUL;
break;
}
cp++;
}
}
GrFont *
DJSVGA_LoadFont(const char * name)
{
GrFont * font = GrLoadFont((char *) name);
if (dj_fontscale != 1. && font != NULL) {
GrFont * scaled;
int w, h;
w = font->h.width * dj_fontscale;
h = font->h.height * dj_fontscale;
scaled = GrBuildConvertedFont(font, GR_FONTCVT_RESIZE, w, h, 0, 0);
GrUnloadFont(font);
font = scaled;
}
return font;
}
TERM_PUBLIC int
DJSVGA_set_font(const char *fontspec)
{
char fontname[DJSVGAFONTLEN];
GrFont * font = NULL;
int res = FALSE;
DJSVGA_flush_line();
if (fontspec != NULL && fontspec[0] != NUL) {
DJSVGA_trim_font_string(fontspec, fontname, sizeof(fontname));
if (fontname[0] != NUL) {
/* eliminate duplicate font requests */
if (strcmp(fontname, DJSVGA_fontname) == 0)
return TRUE;
/* save font info */
safe_strncpy(DJSVGA_fontname, fontname, sizeof(DJSVGA_fontname));
/* try to load font */
font = DJSVGA_LoadFont(DJSVGA_fontname);
res = (font != NULL);
}
}
if (font == NULL) {
/* empty fontspec or unsuccessful attempt above resets default font */
if (DJSVGA_default_fontname[0] != NUL) {
if (DJSVGA_default_font != NULL) {
/* cached result */
safe_strncpy(DJSVGA_fontname, DJSVGA_default_fontname, sizeof(DJSVGA_fontname));
font = DJSVGA_default_font;
} else {
/* eliminate duplicate font requests */
if (strcmp(DJSVGA_default_fontname, DJSVGA_fontname) == 0)
return TRUE;
/* save font info */
safe_strncpy(DJSVGA_fontname, DJSVGA_default_fontname, sizeof(DJSVGA_fontname));
font = DJSVGA_LoadFont(DJSVGA_fontname);
DJSVGA_default_font = (font != NULL) ? font : grx_default_font();
}
res = !(fontspec != NULL && fontspec[0] != NUL);
}
if (font == NULL) {
DJSVGA_fontname[0] = NUL;
font = grx_default_font();
/* indicate that we could not load the requested font */
res = FALSE;
}
}
/* handle fontscale for the GRX/MGRX default font */
if (font == grx_default_font() && dj_fontscale != 1.) {
GrFont * scaled;
int w, h;
w = font->h.width * dj_fontscale;
h = font->h.height * dj_fontscale;
scaled = GrBuildConvertedFont(font, GR_FONTCVT_RESIZE, w, h, 0, 0);
font = scaled;
if (DJSVGA_default_font == grx_default_font())
DJSVGA_default_font = scaled;
}
DJSVGA_TextOption.txo_font = font;
{ /* update hchar / vchar */
const char text[] = "0123456789";
int len = strlen(text);
/* Note: ASCII test string, no need to convert encoding */
term->h_char = GrFontStringWidth(DJSVGA_TextOption.txo_font, text, len, GR_BYTE_TEXT) / len;
term->v_char = GrFontStringHeight(DJSVGA_TextOption.txo_font, text, len, GR_BYTE_TEXT);
}
return res;
}
TERM_PUBLIC void
DJSVGA_put_text(unsigned int x, unsigned int y, const char *str)
{
DJSVGA_flush_line();
// Use the library's text output for multiples of 90 degrees,
// otherwise do slow bit-by-bit rotation.
if ((dj_angle % 90) == 0) {
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
/* determine text length in characters automatically according to encoding */
GrDrawString((void *)str, 0, x, dj_ylast - y, &DJSVGA_TextOption);
#else
GrDrawString((void *)str, strlen(str), x, dj_ylast - y, &DJSVGA_TextOption);
#endif
} else {
GrContext * mem, save;
GrTextOption txo;
int width, height;
int x1, x2, x3, dx, minx, maxx;
int y1, y2, y3, dy, miny, maxy;
float c, s;
// init our own TextOption:
// copy txo_font, txo_chrtype, and txo_bgcolor
memcpy(&txo, &DJSVGA_TextOption, sizeof(txo));
txo.txo_direct = GR_TEXT_RIGHT;
txo.txo_xalign = GR_ALIGN_LEFT;
txo.txo_yalign = GR_ALIGN_BOTTOM;
txo.GRX_TXO_FGCOLOR = GrWhite() | GrWRITE;
// now create a b/w memory context
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
GrStringSize((void *) str, 0, &txo, &width, &height);
#else
GrStringSize((void *) str, strlen(str), &txo, &width, &height);
#endif
mem = GrCreateFrameContext(GR_frameRAM1, width, height, NULL, NULL);
// render the text horizontally in the memory context
GrSaveContext(&save);
GrSetContext(mem);
GrClearContext(GrBlack());
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
GrDrawString((void *) str, 0, 0, height - 1, &txo);
#else
GrDrawString((void *) str, strlen(str), 0, height - 1, &txo);
#endif
GrSetContext(&save);
// calculate sin/cos only once
c = cos(DEG2RAD * dj_angle);
s = - sin(DEG2RAD * dj_angle);
// calculate the destination of the other corners of the bounding rectangle,
// rotate around the origin (0,0)
x1 = (+ height * s);
y1 = ( height * c);
x2 = (+ height * s + width * c);
y2 = ( height * c - width * s);
x3 = ( width * c);
y3 = ( - width * s);
// enclosing rectangle
minx = GPMIN(0, GPMIN(x1, GPMIN(x2, x3)));
miny = GPMIN(0, GPMIN(y1, GPMIN(y2, y3)));
maxx = GPMAX(0, GPMAX(x1, GPMAX(x2, x3)));
maxy = GPMAX(0, GPMAX(y1, GPMAX(y2, y3)));
// adjust the final position according to the text alignment
switch (dj_justify) {
default:
case LEFT:
// center of rotation is (0, height/2)
dx = (int)( height/2. * s);
dy = (int)( height/2. * c);
break;
case CENTRE:
// center of rotation is (width/2, height/2)
dx = (int)( height/2. * s + width/2. * c);
dy = (int)( height/2. * c - width/2. * s);
break;
case RIGHT:
// center of rotation is (width, height/2)
dx = (int)( height/2. * s + width * c);
dy = (int)( height/2. * c - width * s);
break;
}
// we explicitly compute the color of every destination pixel
// loop over x' (xp) and y' (yp)
for (int yp = miny; yp < maxy; yp++) {
for (int xp = minx; xp < maxx; xp++) {
// source point: reverse transform
int xs = (int) ( xp * c - yp * s);
int ys = (int) ( xp * s + yp * c);
if ((xs >= 0) && (xs < width) && (ys >= 0) && (ys < height)) {
if (GrPixelC(mem, xs, height - 1 - ys)) {
// destination point
int xd = xp + ((int) x) - dx;
int yd = dj_ylast - (yp + (int) y - dy);
// there's no GrSetPixel(), so we draw a short horizontal line
GrHLine(xd, xd, yd, DJSVGA_TextOption.GRX_TXO_FGCOLOR | GrWRITE);
}
}
}
}
// we're done with the memory context
GrDestroyContext(mem);
}
}
/* -------------------------------------------------------------------------
The "enhanced text" code below is a modified version of Ethan Merritt's
original skeleton.
------------------------------------------------------------------------- */
static TBOOLEAN dj_enhanced_opened_string;
static TBOOLEAN dj_enhanced_show = TRUE;
static int dj_enhanced_overprint = 0;
static TBOOLEAN dj_enhanced_widthflag = TRUE;
static int dj_enhanced_xsave, dj_enhanced_ysave;
static double dj_enhanced_base;
static int dj_x;
static int dj_y;
static TBOOLEAN dj_sizeonly;
TERM_PUBLIC void
DJSVGA_enhanced_open(
char *fontname,
double fontsize, double base,
TBOOLEAN widthflag, TBOOLEAN showflag,
int overprint)
{
char filename[DJSVGAFONTLEN];
GrFont * font = NULL;
/* There are two special cases:
* overprint = 3 means save current position
* overprint = 4 means restore saved position
*/
if (overprint == 3) {
dj_enhanced_xsave = dj_x;
dj_enhanced_ysave = dj_y;
return;
} else if (overprint == 4) {
dj_x = dj_enhanced_xsave;
dj_y = dj_enhanced_ysave;
return;
}
if (!dj_enhanced_opened_string) {
dj_enhanced_opened_string = TRUE;
/* Start new text fragment */
enhanced_cur_text = &enhanced_text[0];
/* Scale fractional font height to vertical units of display */
dj_enhanced_base = base * term->v_char;
/* Keep track of whether we are supposed to show this string */
dj_enhanced_show = showflag;
/* 0/1/2 no overprint / 1st pass / 2nd pass */
dj_enhanced_overprint = overprint;
/* widthflag FALSE means do not update text position after printing */
dj_enhanced_widthflag = widthflag;
/* Select font */
// FIMXE: why not simply call set_font() here?
// DJSVGA_set_font(fontname);
if ((fontname != NULL) && (strlen(fontname) > 0)) {
DJSVGA_trim_font_string(fontname, filename, sizeof(filename));
if (filename[0] == NUL)
safe_strncpy(filename, DJSVGA_fontname, sizeof(filename));
} else {
safe_strncpy(filename, DJSVGA_fontname, sizeof(filename));
}
if ((filename[0] != NUL) && (strcmp(DJSVGA_fontname, DJSVGA_default_fontname) != 0)) {
font = DJSVGA_LoadFont(filename);
}
if (font == NULL) {
if (DJSVGA_default_font != NULL) {
font = DJSVGA_default_font;
} else if (DJSVGA_default_fontname[0] != NUL) {
font = DJSVGA_LoadFont(DJSVGA_default_fontname);
}
}
if (font == NULL) {
font = grx_default_font();
/* handle fontscale for the GRX/MGRX default font */
if (dj_fontscale != 1.) {
GrFont * scaled;
int w, h;
w = font->h.width * dj_fontscale;
h = font->h.height * dj_fontscale;
scaled = GrBuildConvertedFont(font, GR_FONTCVT_RESIZE, w, h, 0, 0);
font = scaled;
if (DJSVGA_default_font == grx_default_font())
DJSVGA_default_font = scaled;
}
}
DJSVGA_TextOption.txo_font = font;
{ /* update hchar / vchar */
const char text[] = "0123456789";
int len = strlen(text);
/* Note: ASCII test string, no need to convert encoding */
term->h_char = GrFontStringWidth(DJSVGA_TextOption.txo_font, text, len, GR_BYTE_TEXT) / len;
term->v_char = GrFontStringHeight(DJSVGA_TextOption.txo_font, text, len, GR_BYTE_TEXT);
}
}
}
TERM_PUBLIC void
DJSVGA_enhanced_flush()
{
char *str = enhanced_text; /* The fragment to print */
int len;
int width = 0;
int height = 0;
if (!dj_enhanced_opened_string)
return;
*enhanced_cur_text = NUL;
/* calculate length of string first */
len = GrFontStringWidth(DJSVGA_TextOption.txo_font, str, strlen(str), DJSVGA_TextOption.txo_chrtype);
switch (DJSVGA_TextOption.txo_direct) {
case GR_TEXT_RIGHT:
width = len;
height = 0;
break;
case GR_TEXT_LEFT:
width = -len;
height = 0;
break;
case GR_TEXT_UP:
width = 0;
height = len;
break;
case GR_TEXT_DOWN:
width = 0;
height = -len;
break;
}
/* print the string fragment, perhaps invisibly */
/* NB: base expresses offset from current y pos */
if (dj_enhanced_show && !dj_sizeonly) {
GrTextOption option = DJSVGA_TextOption;
int base_x = 0;
int base_y = 0;
switch (DJSVGA_TextOption.txo_direct) {
case GR_TEXT_RIGHT:
option.txo_xalign = GR_ALIGN_LEFT;
option.txo_yalign = GR_ALIGN_CENTER;
base_y = dj_enhanced_base;
break;
case GR_TEXT_LEFT:
option.txo_xalign = GR_ALIGN_RIGHT;
option.txo_yalign = GR_ALIGN_CENTER;
base_y = -dj_enhanced_base;
break;
case GR_TEXT_UP:
option.txo_xalign = GR_ALIGN_CENTER;
option.txo_yalign = GR_ALIGN_BOTTOM;
base_x = -dj_enhanced_base;
break;
case GR_TEXT_DOWN:
option.txo_xalign = GR_ALIGN_CENTER;
option.txo_yalign = GR_ALIGN_TOP;
base_x = dj_enhanced_base;
break;
}
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0110)
/* determine text length in characters automatically according to encoding */
GrDrawString(str, 0, dj_x + base_x, dj_ylast - (int)(dj_y + base_y), &option);
#else
GrDrawString(str, strlen(str), dj_x + base_x, dj_ylast - (int)(dj_y + base_y), &option);
#endif
}
if (!dj_enhanced_widthflag) {
/* don't update position */
width = 0;
height = 0;
}
if (dj_sizeonly) {
/* This is the first pass for justified printing. */
/* We just adjust the starting position for the second pass. */
if (dj_justify == RIGHT) {
dj_x -= width;
dj_y -= height;
} else if (dj_justify == CENTRE) {
dj_x -= width / 2;
dj_y -= height / 2;
}
/* nothing to do for LEFT justified text */
} else if (dj_enhanced_overprint == 1) {
/* Save current position */
dj_enhanced_xsave = dj_x + width;
dj_enhanced_ysave = dj_y + height;
/* First pass of overprint, leave position in center of fragment */
dj_x += width / 2;
dj_y += height / 2;
} else if (dj_enhanced_overprint == 2) {
/* Restore current position, */
/* this sets the position behind the overprinted text */
dj_x = dj_enhanced_xsave;
dj_y = dj_enhanced_ysave;
} else {
/* Normal case is to update position to end of fragment */
dj_x += width;
dj_y += height;
}
dj_enhanced_opened_string = FALSE;
}
TERM_PUBLIC void
DJSVGA_enhanced_put_text(unsigned int x, unsigned int y, const char *str)
{
const char * original_string = str;
unsigned int pass, num_passes;
/* If no enhanced text processing is needed, we can use the plain */
/* vanilla put_text() routine instead of this fancy recursive one. */
if (ignore_enhanced_text || !strpbrk(str, "{}^_@&~")) {
DJSVGA_put_text(x, y, str);
return;
}
DJSVGA_flush_line();
/* Set up global variables needed by enhanced_recursion() */
enhanced_fontscale = 1.0;
dj_enhanced_opened_string = FALSE;
safe_strncpy(enhanced_escape_format, "%c", sizeof(enhanced_escape_format));
dj_x = x;
dj_y = y;
/* Text justification requires two passes. During the first pass we */
/* don't draw anything, we just measure the space it will take. */
/* Without justification one pass is enough */
if (dj_justify == LEFT) {
num_passes = 1;
dj_sizeonly = FALSE;
} else {
num_passes = 2;
dj_sizeonly = TRUE;
}
for (pass = 1; pass <= num_passes; pass++) {
/* Set the recursion going. We say to keep going until a
* closing brace, but we don't really expect to find one.
* If the return value is not the nul-terminator of the
* string, that can only mean that we did find an unmatched
* closing brace in the string. We increment past it (else
* we get stuck in an infinite loop) and try again.
*/
while (*(str = enhanced_recursion(str, TRUE,
DJSVGA_fontname, 1 /* size */,
0.0, TRUE, TRUE, 0))) {
DJSVGA_enhanced_flush();
/* I think we can only get here if *str == '}' */
enh_err_check(str);
if (!*++str)
break; /* end of string */
/* else carry on and process the rest of the string */
}
/* In order to do text justification we need to do a second pass
* that uses information stored during the first pass, see
* GraphEnhancedFlush().
*/
if (pass == 1) {
/* do the actual printing in the next pass */
dj_sizeonly = FALSE;
str = original_string;
}
}
DJSVGA_set_font("");
}
TERM_PUBLIC void
DJSVGA_suspend()
{
DJSVGA_context = GrCreateContext(GrSizeX(), GrSizeY(), 0, 0);
GrBitBltNC(DJSVGA_context, 0, 0, 0, 0, 0, GrMaxX(), GrMaxY(), GrWRITE);
DJSVGA_text();
}
TERM_PUBLIC void
DJSVGA_resume()
{
DJSVGA_graphics();
GrBitBltNC(0, 0, 0, DJSVGA_context, 0, 0, GrMaxX(), GrMaxY(), GrWRITE);
GrDestroyContext(DJSVGA_context);
}
static GrPattern *
DJSVGA_pattern(int pattern, int style)
{
pattern %= dj_fill_pattern_num;
#if defined(MGRX_VERSION_API) && (MGRX_VERSION_API >= 0x0134)
dj_pattern.gp_ptype = GR_PTYPE_BITMAP;
#else
dj_pattern.gp_ispixmap = 0;
#endif
dj_pattern.gp_bmp_height = 8;
dj_pattern.gp_bmp_fgcolor = dj_color;
if (style == FS_TRANSPARENT_PATTERN)
dj_pattern.gp_bmp_bgcolor = GrNOCOLOR;
else
dj_pattern.gp_bmp_bgcolor = GrAllocColor2ID(dj_background);
dj_pattern.gp_bmp_data = dj_fill_pattern_bitmaps[pattern];
return &dj_pattern;
}
TERM_PUBLIC void
DJSVGA_fillbox(
int style,
unsigned int left, unsigned int bottom,
unsigned int width, unsigned height)
{
DJSVGA_flush_line();
switch (style & 0x0f) {
case FS_SOLID:
case FS_TRANSPARENT_SOLID: {
/* fill with intensity according to density */
GrColor c;
int red, green, blue;
int density = style >> 4;
if (density < 0) density = 0;
if (density > 100) density = 100;
GrQueryColor(dj_color, &red, &green, &blue);
red = 255 - density * (255 - red) / 100;
green = 255 - density * (255 - green) / 100;
blue = 255 - density * (255 - blue) / 100;
c = GrAllocColorID(red, green, blue);
GrFilledBox(left, dj_ylast - bottom, left + width - 1, dj_ylast - (bottom + height - 1), c);
break;
}
case FS_PATTERN:
case FS_TRANSPARENT_PATTERN: {
/* fill with pattern */
int pattern = style >> 4;
GrPattern * grpat = DJSVGA_pattern(pattern, style & 0x0f);
GrPatternFilledBox(left, dj_ylast - bottom, left + width - 1, dj_ylast - (bottom + height - 1), grpat);
break;
}
case FS_DEFAULT:
/* Fill with current color, wherever it came from */
GrFilledBox(left, dj_ylast - bottom, left + width - 1, dj_ylast - (bottom + height - 1), dj_color);
break;
case FS_EMPTY:
/* FIXME: Instead of filling with background color, we should not fill at all in this case! */
default: {
/* fill with background color */
GrColor color = GrAllocColor2ID(dj_background);
GrFilledBox(left, dj_ylast - bottom, left + width - 1, dj_ylast - (bottom + height - 1), color);
}
}
}
TERM_PUBLIC void
DJSVGA_filled_polygon(int npoints, gpiPoint *corners)
{
int style = corners->style;
int (* points)[2];
int i;
DJSVGA_flush_line();
points = (int (*)[2]) malloc(npoints * 2 * sizeof(int));
for (i = 0; i < npoints; i++) {
points[i][0] = corners[i].x;
points[i][1] = dj_ylast - corners[i].y;
}
if (corners[0].x == corners[npoints - 1].x &&
corners[0].y == corners[npoints - 1].y)
npoints--;
switch (style & 0x0f) {
case FS_SOLID:
case FS_TRANSPARENT_SOLID: {
/* fill with intensity according to density */
GrColor c;
int red, green, blue;
int density = style >> 4;
if (density < 0) density = 0;
if (density > 100) density = 100;
GrQueryColor(dj_color, &red, &green, &blue);
red = 255 - density * (255 - red) / 100;
green = 255 - density * (255 - green) / 100;
blue = 255 - density * (255 - blue) / 100;
c = GrAllocColorID(red, green, blue);
/* Warning: drawing convex polygons is faster, so we assume
that all quadrangles are convex, optimising for PM3D. */
if (npoints <= 4)
GrFilledConvexPolygon(npoints, points, c);
else
GrFilledPolygon(npoints, points, c);
break;
}
case FS_PATTERN:
case FS_TRANSPARENT_PATTERN: {
/* fill with pattern */
int pattern = style >> 4;
GrPattern * grpat = DJSVGA_pattern(pattern, style & 0x0f);
GrPatternFilledPolygon(npoints, points, grpat);
break;
}
case FS_DEFAULT:
/* Fill with current color, wherever it came from */
GrFilledPolygon(npoints, points, dj_color);
break;
case FS_EMPTY:
/* FIXME: Instead of filling with background color, we should not fill at all in this case! */
default: {
/* fill with background color */
GrColor color = GrAllocColor2ID(dj_background);
GrFilledPolygon(npoints, points, color);
}
}
free(points);
}
TERM_PUBLIC void
DJSVGA_path(int p)
{
if (p == 0) { /* start new path */
DJSVGA_flush_line();
dj_in_path = TRUE;
dj_polygon_points = 0;
FPRINTF((stderr, "svga: newpath\n"));
} else if (p == 1) { /* close path */
FPRINTF((stderr, "svga: closepath: %i points\n", dj_polygon_points));
if (dj_polygon_points > 1) {
GrLineOption dj_lineoption =
{ dj_color, dj_linewidth * dj_lwscale,
dj_dashpatlen, dj_dashpatlen != 0 ? dj_dashpat : NULL };
GrCustomPolygon(dj_polygon_points, dj_path, &dj_lineoption);
}
dj_in_path = FALSE;
dj_polygon_points = 0;
}
}
static void
DJSVGA_add_path_point(int x, int y)
{
if (dj_polygon_points >= DJSVGA_MAXPATH)
DJSVGA_flush_line();
dj_path[dj_polygon_points][0] = x;
dj_path[dj_polygon_points][1] = y;
dj_polygon_points++;
FPRINTF((stderr, "svga: new polygon point: %i %i\n", x, y));
}
TERM_PUBLIC void
DJSVGA_linewidth(double linewidth)
{
DJSVGA_flush_line();
dj_linewidth = linewidth;
}
TERM_PUBLIC void
DJSVGA_pointsize(double size)
{
DJSVGA_flush_line();
term_pointsize = (size >= 0 ? dj_pointscale * size : 1.);
}
TERM_PUBLIC void
DJSVGA_image(unsigned int M, unsigned int N, coordval *image,
gpiPoint *corner, t_imagecolor color_mode)
{
GrContext ctxt;
// FIXME: GrImage is deprecated as of MGRX 1.3.4.
GrImage * im = NULL;
switch (color_mode) {
case IC_PALETTE: {
uint8_t * data;
GrColor * colors;
int n;
FPRINTF((stderr, "svga: palette image\n"));
/* convert image data */
data = (uint8_t *) gp_alloc(M * N, "image data");
for (n = 0; n < M * N; n++)
data[n] = 255 * image[n];
/* build color table */
colors = (GrColor *) gp_alloc(257 * sizeof(GrColor), "image data");
colors[0] = 256; /* first entry denotes number of color table entries */
for (n = 0; n < 256; n++) {
rgb255_color rgb255;
rgb255maxcolors_from_gray(n / 255.0, &rgb255);
colors[n + 1] = GrAllocColorID(rgb255.r, rgb255.g, rgb255.b);
}
/* create image */
im = GrImageBuild((char *)data, M, N, colors);
free(colors);
free(data);
break;
}
case IC_RGB:
case IC_RGBA: {
unsigned m, n;
GrColor * line; /* scan line buffer */
rgb_color rgb1;
rgb255_color rgb255;
GrColor color;
GrContext grc;
FPRINTF((stderr, "svga: rgb / rgba image\n"));
/* create and fill context */
GrCreateContext(M, N, NULL, &ctxt);
GrSaveContext(&grc);
GrSetContext(&ctxt);
line = (GrColor *) gp_alloc(M * sizeof(GrColor), "scan line");
if (color_mode == IC_RGB) {
for (n = 0; n < N; n++) {
for (m = 0; m < M; m++) {
rgb1.r = image[3 * (n * M + m) + 0];
rgb1.g = image[3 * (n * M + m) + 1];
rgb1.b = image[3 * (n * M + m) + 2];
rgb255_from_rgb1(rgb1, &rgb255);
color = GrAllocColorID(rgb255.r, rgb255.g, rgb255.b);
line[m] = color;
}
GrPutScanline(0, M -1, n, line, GrWRITE);
}
} else {
for (n = 0; n < N; n++) {
for (m = 0; m < M; m++) {
coordval alpha;
rgb1.r = image[4 * (n * M + m) + 0];
rgb1.g = image[4 * (n * M + m) + 1];
rgb1.b = image[4 * (n * M + m) + 2];
alpha = image[4 * (n * M + m) + 3];
/* no alpha support, so we "round" */
if (alpha >= 0.5) {
rgb255_from_rgb1(rgb1, &rgb255);
color = GrAllocColorID(rgb255.r, rgb255.g, rgb255.b);
} else {
color = GrNOCOLOR;
}
line[m] = color;
}
GrPutScanline(0, M -1, n, line, GrWRITE);
}
}
free(line);
GrSetContext(&grc);
im = GrImageFromContext(&ctxt);
break;
}
default: /* unknown */
FPRINTF((stderr, "svga: unknown image type\n"));
return;
}
if (im != NULL) {
/* stretch */
GrImage * stretched = GrImageStretch(im, corner[1].x - corner[0].x, abs(corner[0].y - corner[1].y));
/* display image with clipping */
if (stretched != NULL) {
GrSetClipBox(corner[2].x, dj_ylast - corner[2].y, corner[3].x, dj_ylast - corner[3].y);
GrImageDisplay(corner[0].x, dj_ylast - corner[0].y, stretched);
GrResetClipBox();
GrImageDestroy(stretched);
}
GrImageDestroy(im);
}
/* The context can only be freed after the image! */
if ((color_mode == IC_RGB) || (color_mode == IC_RGBA))
GrDestroyContext(&ctxt);
}
#ifdef USE_MOUSE
/* Mapping tables for special keycodes. Note that these have to be
ordered by the GRX/MGRX key code. */
/* no modifiers */
static int grx_key_table [][2] = {
{ GrKey_F1, GP_F1 },
{ GrKey_F2, GP_F2 },
{ GrKey_F3, GP_F3 },
{ GrKey_F4, GP_F4 },
{ GrKey_F5, GP_F5 },
{ GrKey_F6, GP_F6 },
{ GrKey_F7, GP_F7 },
{ GrKey_F8, GP_F8 },
{ GrKey_F9, GP_F9 },
{ GrKey_F10, GP_F10 },
{ GrKey_Home, GP_Home },
{ GrKey_Up, GP_Up },
{ GrKey_PageUp, GP_PageUp },
{ GrKey_Left, GP_Left },
{ GrKey_Right, GP_Right },
{ GrKey_End, GP_End },
{ GrKey_Down, GP_Down },
{ GrKey_PageDown, GP_PageDown },
{ GrKey_Insert, GP_Insert },
{ GrKey_Delete, GP_Delete },
{ GrKey_F11, GP_F11 },
{ GrKey_F12, GP_F12 }
};
/* shift modifier */
static int grx_shift_key_table [][2] = {
{ GrKey_BackTab, GP_Tab },
{ GrKey_Shift_F1, GP_F1 },
{ GrKey_Shift_F2, GP_F2 },
{ GrKey_Shift_F3, GP_F3 },
{ GrKey_Shift_F4, GP_F4 },
{ GrKey_Shift_F5, GP_F5 },
{ GrKey_Shift_F6, GP_F6 },
{ GrKey_Shift_F7, GP_F7 },
{ GrKey_Shift_F8, GP_F8 },
{ GrKey_Shift_F9, GP_F9 },
{ GrKey_Shift_F10, GP_F10 },
{ GrKey_Shift_F11, GP_F11 },
{ GrKey_Shift_F12, GP_F12 },
{ GrKey_Shift_Insert, GP_Insert },
{ GrKey_Shift_Home, GP_Home },
{ GrKey_Shift_End, GP_End },
{ GrKey_Shift_PageUp, GP_PageUp },
{ GrKey_Shift_PageDown, GP_PageDown },
{ GrKey_Shift_Up, GP_Up },
{ GrKey_Shift_Down, GP_Down },
{ GrKey_Shift_Right, GP_Right },
{ GrKey_Shift_Left, GP_Left }
};
/* ctrl modifier */
static int grx_control_key_table [][2] = {
{ GrKey_Control_At, '@' },
{ GrKey_Control_F1, GP_F1 },
{ GrKey_Control_F2, GP_F2 },
{ GrKey_Control_F3, GP_F3 },
{ GrKey_Control_F4, GP_F4 },
{ GrKey_Control_F5, GP_F5 },
{ GrKey_Control_F6, GP_F6 },
{ GrKey_Control_F7, GP_F7 },
{ GrKey_Control_F8, GP_F8 },
{ GrKey_Control_F9, GP_F9 },
{ GrKey_Control_F10, GP_F10 },
{ GrKey_Control_F10, GP_F10 },
{ GrKey_Control_Left, GP_Left },
{ GrKey_Control_Right, GP_Right },
{ GrKey_Control_End, GP_End },
{ GrKey_Control_PageDown, GP_PageDown },
{ GrKey_Control_Home, GP_Home },
{ GrKey_Control_PageUp, GP_PageUp },
{ GrKey_Control_F11, GP_F11 },
{ GrKey_Control_F12, GP_F12 },
{ GrKey_Control_Up, GP_Up },
{ GrKey_Control_KPDash, GP_KP_Subtract },
{ GrKey_Control_KPPlus, GP_KP_Add },
{ GrKey_Control_Down, GP_Down },
{ GrKey_Control_Insert, GP_Insert },
{ GrKey_Control_Delete, GP_Delete },
{ GrKey_Control_Tab, GP_Tab },
{ GrKey_Control_KPSlash, GP_KP_Divide },
{ GrKey_Control_KPStar, GP_KP_Multiply }
};
/* alt modifier */
// FIXME: these seem to correspond to scan-codes from an US? keyboard
// FIXME: should the letters be lower or upper case?
static int grx_alt_key_table [][2] = {
{ GrKey_Alt_Escape, GP_Escape },
{ GrKey_Alt_Backspace, GP_BackSpace },
{ GrKey_Alt_Q, 'q' },
{ GrKey_Alt_W, 'w' },
{ GrKey_Alt_E, 'e' },
{ GrKey_Alt_R, 'r' },
{ GrKey_Alt_T, 't' },
{ GrKey_Alt_Y, 'y' },
{ GrKey_Alt_U, 'u' },
{ GrKey_Alt_I, 'i' },
{ GrKey_Alt_O, 'o' },
{ GrKey_Alt_P, 'p' },
{ GrKey_Alt_LBracket, '[' },
{ GrKey_Alt_RBracket, ']' },
{ GrKey_Alt_Return, GP_Return },
{ GrKey_Alt_A, 'a' },
{ GrKey_Alt_S, 's' },
{ GrKey_Alt_D, 'd' },
{ GrKey_Alt_F, 'f' },
{ GrKey_Alt_G, 'g' },
{ GrKey_Alt_H, 'h' },
{ GrKey_Alt_J, 'j' },
{ GrKey_Alt_K, 'k' },
{ GrKey_Alt_L, 'l' },
{ GrKey_Alt_Semicolon, ';' },
{ GrKey_Alt_Quote, '\'' },
{ GrKey_Alt_Backquote, '`' },
{ GrKey_Alt_Backslash, '\\' },
{ GrKey_Alt_Z, 'z' },
{ GrKey_Alt_X, 'x' },
{ GrKey_Alt_C, 'c' },
{ GrKey_Alt_V, 'v' },
{ GrKey_Alt_B, 'b' },
{ GrKey_Alt_N, 'n' },
{ GrKey_Alt_M, 'm' },
{ GrKey_Alt_Comma, ',' },
{ GrKey_Alt_Period, '.' },
{ GrKey_Alt_Slash, '/' },
{ GrKey_Alt_KPStar, GP_KP_Multiply },
{ GrKey_Alt_KPMinus, GP_KP_Subtract },
{ GrKey_Alt_KPPlus, GP_KP_Add },
{ GrKey_Alt_F1, GP_F1 },
{ GrKey_Alt_F2, GP_F2 },
{ GrKey_Alt_F3, GP_F3 },
{ GrKey_Alt_F4, GP_F4 },
{ GrKey_Alt_F5, GP_F5 },
{ GrKey_Alt_F6, GP_F6 },
{ GrKey_Alt_F7, GP_F7 },
{ GrKey_Alt_F8, GP_F8 },
{ GrKey_Alt_F9, GP_F9 },
{ GrKey_Alt_F10, GP_F11 },
{ GrKey_Alt_1, '1' },
{ GrKey_Alt_2, '2' },
{ GrKey_Alt_3, '3' },
{ GrKey_Alt_4, '4' },
{ GrKey_Alt_5, '5' },
{ GrKey_Alt_6, '6' },
{ GrKey_Alt_7, '7' },
{ GrKey_Alt_8, '8' },
{ GrKey_Alt_9, '9' },
{ GrKey_Alt_0, '0' },
{ GrKey_Alt_Dash, '-' },
{ GrKey_Alt_Equals, '=' },
{ GrKey_Alt_F11, GP_F11 },
{ GrKey_Alt_F12, GP_F12 },
{ GrKey_Alt_KPSlash, GP_KP_Divide },
{ GrKey_Alt_Tab, GP_Tab },
{ GrKey_Alt_Enter, GP_Return },
{ GrKey_Alt_Up, GP_Up },
{ GrKey_Alt_Left, GP_Left },
{ GrKey_Alt_Right, GP_Right },
{ GrKey_Alt_Down, GP_Down },
{ GrKey_Alt_Insert, GP_Insert },
{ GrKey_Alt_Delete, GP_Delete },
{ GrKey_Alt_Home, GP_Home },
{ GrKey_Alt_End, GP_End },
{ GrKey_Alt_PageUp, GP_PageUp },
{ GrKey_Alt_PageDown, GP_PageDown },
};
static int
grx_int_compare(const void * elem1, const void * elem2)
{
int val = *(int *)elem1 - *(int *)elem2;
return (0 < val) - (val < 0);
}
/* map a GRX special key to a gnuplot code */
static int
grx_translate_key(int key, int kbstat)
{
if (key < 0x100)
return key; /* no need to handle those */
else {
int (* found)[2];
/* GRX/MGRX maps some special keys including modifiers */
found = bsearch((void *)&key,
grx_key_table, sizeof(grx_key_table) / (2 * sizeof(int)), 2 * sizeof(int),
&grx_int_compare);
if ((found == NULL) && (kbstat & GRKBS_ALT)) {
found = bsearch((void *)&key,
grx_alt_key_table, sizeof(grx_alt_key_table) / (2 * sizeof(int)), 2 * sizeof(int),
&grx_int_compare);
}
if ((found == NULL) && (kbstat & GRKBS_CTRL)) {
found = bsearch((void *)&key,
grx_control_key_table, sizeof(grx_control_key_table) / (2 * sizeof(int)), 2 * sizeof(int),
&grx_int_compare);
}
if ((found == NULL) && (kbstat & GRKBS_SHIFT)) {
found = bsearch((void *)&key,
grx_shift_key_table, sizeof(grx_shift_key_table) / (2 * sizeof(int)), 2 * sizeof(int),
&grx_int_compare);
}
return (found != NULL) ? (*found)[1] : -1;
}
}
/* map a MGRX modifier status to the gnuplot code */
static int
grx_translate_kbstat(int kbstat)
{
int modifier = 0;
if (kbstat & GRKBS_SHIFT)
modifier |= Mod_Shift;
if (kbstat & GRKBS_CTRL)
modifier |= Mod_Ctrl;
if (kbstat & GRKBS_ALT)
modifier |= Mod_Alt;
return modifier;
}
#ifdef HAVE_MGRX
static TBOOLEAN
grx_check_event(void)
{
GrEvent ev;
static int last_kbstat = -1;
TBOOLEAN ret = FALSE;
GrEventRead(&ev);
switch (ev.type) {
case GREV_KEY: {
int key;
FPRINTF((stderr, "Key event: key=%x\n", (unsigned) ev.p1));
if (ev.kbstat != last_kbstat) {
int modifier = grx_translate_kbstat(ev.kbstat);
ret = exec_event(GE_modifier, GrMouseInfo->xpos, dj_ylast - GrMouseInfo->ypos, modifier, 0, 0);
last_kbstat = ev.kbstat;
}
key = grx_translate_key(ev.p1, ev.kbstat);
if (key != -1) {
/* FIXME: GrMouseInfo is not documented */
ret = exec_event(GE_keypress, GrMouseInfo->xpos, dj_ylast - GrMouseInfo->ypos, key, 0, 0);
} else {
/* FIXME: for debugging only */
printf("Unknown key: %03x code/bytes: %3x\n", (unsigned) ev.p1, (unsigned) ev.p2);
}
switch (key) {
#ifdef MSDOS
case GP_Return:
case GP_Escape:
case GP_BackSpace:
case GP_Delete:
dj_processing_events = FALSE;
break;
#endif
#ifdef _WIN32
case ' ':
WinRaiseConsole();
break;
#endif
default:
;
}
}
case GREV_MOUSE:
FPRINTF((stderr, "Mouse event: type=%i time=%i\n", (int) ev.p1, (int) ev.time));
if (ev.kbstat != last_kbstat) {
int modifier = grx_translate_kbstat(ev.kbstat);
ret = exec_event(GE_modifier, GrMouseInfo->xpos, dj_ylast - GrMouseInfo->ypos, modifier, 0, 0);
last_kbstat = ev.kbstat;
}
switch (ev.p1) {
case GRMOUSE_LB_PRESSED:
ret = exec_event(GE_buttonpress, ev.p2, dj_ylast - ev.p3, 1, ev.time, 0);
break;
case GRMOUSE_MB_PRESSED:
ret = exec_event(GE_buttonpress, ev.p2, dj_ylast - ev.p3, 2, ev.time, 0);
break;
case GRMOUSE_RB_PRESSED:
ret = exec_event(GE_buttonpress, ev.p2, dj_ylast - ev.p3, 3, ev.time, 0);
break;
case GRMOUSE_LB_RELEASED:
ret = exec_event(GE_buttonrelease, ev.p2, dj_ylast - ev.p3, 1, ev.time, 0);
break;
case GRMOUSE_MB_RELEASED:
ret = exec_event(GE_buttonrelease, ev.p2, dj_ylast - ev.p3, 2, ev.time, 0);
break;
case GRMOUSE_RB_RELEASED:
ret = exec_event(GE_buttonrelease, ev.p2, dj_ylast - ev.p3, 3, ev.time, 0);
break;
case GRMOUSE_B4_PRESSED:
ret = exec_event(GE_buttonpress, ev.p2, dj_ylast - ev.p3, 4, ev.time, 0);
break;
case GRMOUSE_B4_RELEASED:
ret = exec_event(GE_buttonrelease, ev.p2, dj_ylast - ev.p3, 4, ev.time, 0);
break;
case GRMOUSE_B5_PRESSED:
ret = exec_event(GE_buttonpress, ev.p2, dj_ylast - ev.p3, 5, ev.time, 0);
break;
case GRMOUSE_B5_RELEASED:
ret = exec_event(GE_buttonrelease, ev.p2, dj_ylast - ev.p3, 5, ev.time, 0);
break;
}
break;
case GREV_MMOVE:
FPRINTF((stderr, "Mouse move event: %i,%i\n", (int) ev.p2, (int) ev.p3));
if (ev.kbstat != last_kbstat) {
int modifier = grx_translate_kbstat(ev.kbstat);
ret = exec_event(GE_modifier, GrMouseInfo->xpos, dj_ylast - GrMouseInfo->ypos, modifier, 0, 0);
last_kbstat = ev.kbstat;
}
ret = exec_event(GE_motion, ev.p2, dj_ylast - ev.p3, 0 /* par1 */, ev.time, 0);
break;
case GREV_NULL:
default:
/* ignore - nothing to do */
break;
}
return ret;
}
#else
static TBOOLEAN
grx_check_event(void)
{
GrMouseEvent ev;
static int last_kbstat = -1;
TBOOLEAN ret = FALSE;
int ev_time = 0;
GrMouseGetEvent(GR_M_POLL | GR_M_MOTION | GR_M_BUTTON_CHANGE | GR_M_KEYPRESS, &ev);
ev_time = ev.dtime;
if (ev.flags & GR_M_MOTION) {
FPRINTF((stderr, "Mouse move event: %i,%i\n", (int) ev.x, (int) ev.y));
if (ev.kbstat != last_kbstat) {
int modifier = grx_translate_kbstat(ev.kbstat);
ret = exec_event(GE_modifier, ev.x, dj_ylast - ev.y, modifier, 0, 0);
last_kbstat = ev.kbstat;
}
ret = exec_event(GE_motion, ev.x, dj_ylast - ev.y, 0 /* par1 */, ev_time, 0);
} else if (ev.flags & GR_M_KEYPRESS) {
int key;
FPRINTF((stderr, "Key event: key=%x\n", (unsigned) ev.key));
if (ev.kbstat != last_kbstat) {
int modifier = grx_translate_kbstat(ev.kbstat);
ret = exec_event(GE_modifier, ev.x, dj_ylast - ev.y, modifier, 0, 0);
last_kbstat = ev.kbstat;
}
key = grx_translate_key(ev.key, ev.kbstat);
if (key != -1) {
ret = exec_event(GE_keypress, ev.x, dj_ylast - ev.y, key, 0, 0);
} else {
/* FIXME: for debugging only */
printf("Unknown key: %03x code/bytes: %3x\n", (unsigned) ev.x, (unsigned) ev.y);
}
switch (key) {
#ifdef MSDOS
case GP_Return:
case GP_Escape:
case GP_BackSpace:
case GP_Delete:
dj_processing_events = FALSE;
break;
#endif
#ifdef _WIN32
case ' ':
WinRaiseConsole();
break;
#endif
default:
;
}
} else if (ev.flags & GR_M_BUTTON_DOWN) {
if (ev.flags & GR_M_LEFT_DOWN) {
ret = exec_event(GE_buttonpress, ev.x, dj_ylast - ev.y, 1, ev_time, 0);
} else if (ev.flags & GR_M_MIDDLE_DOWN) {
ret = exec_event(GE_buttonpress, ev.x, dj_ylast - ev.y, 2, ev_time, 0);
} else if (ev.flags & GR_M_RIGHT_DOWN) {
ret = exec_event(GE_buttonpress, ev.x, dj_ylast - ev.y, 3, ev_time, 0);
} else if (ev.flags & GR_M_P4_DOWN) {
ret = exec_event(GE_buttonpress, ev.x, dj_ylast - ev.y, 4, ev_time, 0);
} else if (ev.flags & GR_M_P5_DOWN) {
ret = exec_event(GE_buttonpress, ev.x, dj_ylast - ev.y, 5, ev_time, 0);
}
} else if (ev.flags & GR_M_BUTTON_UP) {
if (ev.flags & GR_M_LEFT_UP) {
ret = exec_event(GE_buttonrelease, ev.x, dj_ylast - ev.y, 1, ev_time, 0);
} else if (ev.flags & GR_M_MIDDLE_UP) {
ret = exec_event(GE_buttonrelease, ev.x, dj_ylast - ev.y, 2, ev_time, 0);
} else if (ev.flags & GR_M_RIGHT_UP) {
ret = exec_event(GE_buttonrelease, ev.x, dj_ylast - ev.y, 3, ev_time, 0);
} else if (ev.flags & GR_M_P4_UP) {
ret = exec_event(GE_buttonrelease, ev.x, dj_ylast - ev.y, 4, ev_time, 0);
} else if (ev.flags & GR_M_P5_UP) {
ret = exec_event(GE_buttonrelease, ev.x, dj_ylast - ev.y, 5, ev_time, 0);
}
}
return ret;
}
#endif
#if defined(MGRX_XWIN) || defined(_WIN32)
TERM_PUBLIC int
DJSVGA_waitforinput(int mode)
{
if (mode == TERM_ONLY_CHECK_MOUSING) {
if (dj_initialized)
grx_check_event();
return NUL;
} else
#ifdef HAVE_SELECT
while (1) {
fd_set rfds;
struct timeval tv = { 0L, 10000L };
int retval;
/* process events (including X11 "redraw") */
if (dj_initialized)
grx_check_event();
FD_ZERO(&rfds);
FD_SET(STDIN_FILENO, &rfds);
retval = select(STDIN_FILENO + 1, &rfds, NULL, NULL, &tv);
if (FD_ISSET(STDIN_FILENO, &rfds))
return getc(stdin);
}
#else
# ifdef _WIN32
# ifndef WGP_CONSOLE
/* win32 */
while (1) {
if (MsgWaitForMultipleObjects(0, NULL, FALSE, 10, QS_ALLINPUT) != WAIT_TIMEOUT) {
WinMessageLoop();
if (kbhit())
return getchar();
}
if (dj_initialized)
grx_check_event();
}
# else
# endif
# endif
#endif
return getc(stdin);
}
#endif
TERM_PUBLIC void
DJSVGA_put_tmptext(int location, const char str[])
{
int x, y;
switch (location) {
case 0: /* status line */
x = 0;
y = dj_ylast - 16;
if (dj_statusline[0] != NUL)
GrTextXY(x, y, dj_statusline, GrWhite() | GrXOR, GrNOCOLOR);
if (str != NULL) {
safe_strncpy(dj_statusline, str, sizeof(dj_statusline));
GrTextXY(x, y, dj_statusline, GrWhite() | GrXOR, GrNOCOLOR);
} else {
dj_statusline[0] = NUL;
}
break;
case 1: /* zoom box */
break;
case 2: /* zoom box */
break;
}
}
TERM_PUBLIC void
DJSVGA_set_ruler(int x, int y)
{
if (x >= 0) { /* switch ruler on */
dj_ruler_x = x;
dj_ruler_y = y;
} else { /* switch ruler off */
x = dj_ruler_x;
y = dj_ruler_y;
dj_ruler_x = dj_ruler_y = -1;
DJSVGA_set_cursor(-4, 0, 0);
}
GrHLine(0, dj_xlast, dj_ylast - y, GrWhite() | GrXOR);
GrVLine(x, 0, dj_ylast, GrWhite() | GrXOR);
}
TERM_PUBLIC void
DJSVGA_set_cursor(int action, int x, int y)
{
FPRINTF((stderr, "set cursor: action=%i pos=%i,%i\n", action, x, y));
switch (action) {
case -4: /* end line to cursor */
GrMouseEraseCursor();
GrMouseSetCursorMode(GR_M_CUR_NORMAL);
GrMouseDisplayCursor();
break;
case -3: /* line to cursor */
if (dj_ruler_x == -1)
return;
GrMouseEraseCursor();
GrMouseSetCursorMode(GR_M_CUR_LINE, dj_ruler_x, dj_ylast - dj_ruler_y, GrWhite());
GrMouseDisplayCursor();
break;
case -2: /* warp pointer */
GrMouseEraseCursor();
GrMouseWarp(x, dj_ylast - y);
GrMouseDisplayCursor();
break;
case -1: /* start zooming */
GrMouseEraseCursor();
GrMouseSetCursorMode(GR_M_CUR_RUBBER, x, dj_ylast - y, GrWhite());
GrMouseDisplayCursor();
break;
case 0: /* default */
GrMouseEraseCursor();
GrMouseSetCursorMode(GR_M_CUR_NORMAL);
#ifdef HAVE_MGRX
GrMouseSetInternalCursor(mouse_setting.on ? GR_MCUR_TYPE_CROSS : GR_MCUR_TYPE_ARROW,
GrWhite(), GrBlack());
#endif
GrMouseDisplayCursor();
break;
case 1: /* cursor rotation */
case 2: /* cursor scaling */
case 3: /* cursor zoom */
/* TODO: implement different cursor shapes */
break;
}
}
#endif
#ifdef DJSVGA_DEBUG
# undef FPRINTF
# define FPRINTF(a)
#endif
#endif /* TERM_BODY */
#ifdef TERM_TABLE
TERM_TABLE_START(djsvga_driver)
"svga", "IBM PC/Clone with Super VGA graphics card",
DJSVGA_XMAX, DJSVGA_YMAX, DJSVGA_VCHAR, DJSVGA_HCHAR,
DJSVGA_VTIC, DJSVGA_HTIC,
DJSVGA_options,
DJSVGA_init, DJSVGA_reset, DJSVGA_text,
null_scale, DJSVGA_graphics, DJSVGA_move, DJSVGA_vector,
DJSVGA_linetype, DJSVGA_enhanced_put_text,
DJSVGA_angle, DJSVGA_justify_text,
do_point, do_arrow, DJSVGA_set_font,
DJSVGA_pointsize,
TERM_CAN_MULTIPLOT | TERM_NO_OUTPUTFILE | TERM_ENHANCED_TEXT |
TERM_LINEWIDTH | TERM_POINTSCALE | TERM_FONTSCALE | TERM_CAN_DASH,
DJSVGA_suspend, DJSVGA_resume,
DJSVGA_fillbox, DJSVGA_linewidth,
#ifdef USE_MOUSE
#if defined(MGRX_XWIN) || defined(_WIN32)
DJSVGA_waitforinput, DJSVGA_put_tmptext, DJSVGA_set_ruler, DJSVGA_set_cursor, 0,
#else
0, DJSVGA_put_tmptext, DJSVGA_set_ruler, DJSVGA_set_cursor, 0,
#endif
#endif
DJSVGA_make_palette, 0, DJSVGA_color,
DJSVGA_filled_polygon,
DJSVGA_image,
DJSVGA_enhanced_open, DJSVGA_enhanced_flush, do_enh_writec,
0 /* layer */, DJSVGA_path,
0.0,
0 /* hypertext */,
0,
0,
DJSVGA_dashtype
TERM_TABLE_END(djsvga_driver)
#undef LAST_TERM
#define LAST_TERM djsvga_driver
#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */
#ifdef TERM_HELP
START_HELP(svga)
"1 svga",
"?commands set terminal svga",
"?set terminal svga",
"?set term svga",
"?terminal svga",
"?term svga",
"?svga",
" Legacy terminal. The `svga` terminal driver supports PCs with SVGA graphics.",
" It is typically only compiled with DJGPP and uses the GRX graphics library.",
" There is also a variant for Windows 32bit, which is mainly used for",
" debugging. The underlying library also supports X11, Linux console and SDL,",
" but these targets are currently not supported.",
"",
" Syntax:",
" set terminal svga {font \"<fontname>\"}",
" {{no}enhanced}",
" {background <rgb color>}",
" {linewidth|lw <lw>}",
" {pointscale|ps <scale>}",
" {fontscale|fs <scale>}",
"",
" Enhanced text support can be activated using the `enhanced` option,",
" see `enhanced text`. Note that changing the font size in enhanced text is",
" currently not supported. Hence, super- and subscripts will have the same size.",
"",
" The `linewidth` parameter scales the width of lines. The `pointscale`",
" parameter sets the scale factor for point symbols. You can use `fontscale`",
" to scale the bitmap font. This might be useful if you have a hi-res display.",
" Note that integer factors give best results."
END_HELP(svga)
#endif /* TERM_HELP */
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