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gxdraw.c
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gxdraw.c
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/* Copyright (C) 2000-2012 by George Williams */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef __VMS
#include <vms_x_fix.h>
#endif
#include "gxdrawP.h"
#include "gxcdrawP.h"
#include <stdlib.h>
#include <math.h>
#include <sys/types.h> /* for timers & select */
#include <sys/time.h> /* for timers & select */
#include <unistd.h> /* for timers & select */
#include <signal.h> /* error handler */
#include <locale.h> /* for setting the X locale properly */
#ifdef HAVE_PTHREAD_H
# if defined(__MINGW32__)
# include <Windows.h>
# include <WinSock2.h>
# else
# include <sys/socket.h>
# include <sys/un.h>
# endif
#endif
#include <ustring.h>
#include <utype.h>
#include "fontP.h"
#include <gresource.h>
enum cm_type { cmt_default=-1, cmt_current, cmt_copy, cmt_private };
#ifndef X_DISPLAY_MISSING
# include <X11/Xatom.h>
# include <X11/keysym.h>
# include <X11/cursorfont.h>
# include <X11/Xresource.h>
#define XKeysym_Mask 0x01000000
#define XKEYSYM_TOP 8364
extern int gdraw_xkeysym_2_unicode[];
/*#define GREEK_BUG 1*/
static void GXDrawTransmitSelection(GXDisplay *gd,XEvent *event);
static void GXDrawClearSelData(GXDisplay *gd,enum selnames sel);
struct font_decomp {
int point;
int res;
enum font_style style;
int iw_weight;
enum charset map;
unichar_t *name;
int prop;
unichar_t *mapname;
enum font_type ft;
};
/* ************************************************************************** */
/* ******************************* Font Stuff ******************************* */
/* ************************************************************************** */
/* Names from x server are in isolatin1, not unicode */
static int decompose_screen_name(char *xname, struct font_decomp *info, int screen_res) {
unichar_t weight[80], ital[80], prop[80], map[80], sans[80], conext[80];
char foundary[80];
static unichar_t name[80];
int pixelh, screenw, avgwid;
register char *pt, *strt; char *pos;
/* don't need foundary, um, pointh, screenh, whatsat */
/* well, let's keep the foundary to work around a bug in SUSE greek fonts */
pt = xname;
if ( *pt++!='-' )
return( false );
strt = pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Skip foundary */
if ( *pt=='\0' )
return( false );
strncpy(foundary,strt,pt-strt); foundary[(pt-strt)] = '\0';
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Get the name */
if ( *pt=='\0' )
return( false );
uc_strncpy(name,strt,pt-strt); name[(pt-strt)] = '\0';
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Get the weight */
if ( *pt=='\0' )
return( false );
uc_strncpy(weight,strt,pt-strt); weight[(pt-strt)] = '\0';
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Get the style */
if ( *pt=='\0' )
return( false );
uc_strncpy(ital,strt,pt-strt); ital[(pt-strt)] = '\0';
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* condensed, extended, normal */
if ( *pt=='\0' )
return( false );
uc_strncpy(conext,strt,pt-strt); conext[(pt-strt)] = '\0';
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* sans/serif mark */
if ( *pt=='\0' )
return( false );
uc_strncpy(sans,strt,pt-strt); sans[(pt-strt)] = '\0';
if ( uc_strstrmatch(sans,"sans")!=NULL )
uc_strcat(name,"Sans");
else if ( uc_strstrmatch(sans,"serif")!=NULL )
uc_strcat(name,"Serif");
pixelh = strtol(pt+1,&pos,10); /* get the pixel size */
pt = pos;
if ( *pt!='-' )
return( false );
++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Skip the point size */
if ( *pt=='\0' )
return( false );
screenw = strtol(pt+1,&pos,10); /* get the screen resolution (horizontally) */
pt = pos;
if ( *pt!='-' )
return( false );
++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Skip the vertical screen res */
if ( *pt=='\0' )
return( false );
strt = ++pt;
while ( *pt!='-' && *pt!='\0' ) ++pt; /* Get the mono/proportional flag */
if ( *pt=='\0' )
return( false );
uc_strncpy(prop,strt,pt-strt); prop[(pt-strt)] = '\0';
avgwid = strtol(pt+1,&pos,10); /* get the average width. We don't care about it, but it can tell us if the font is scaled */
pt = pos;
/* fonts with avgwid==0 and pixelh!=0 appear to be some weird transients of */
/* scaling (or something). If we ask for them again we probably won't find */
/* them (or if we do they won't have metrics), and that makes us very unhappy */
/* so best just to ignore them now */
if ( *pt!='-' || (pixelh!=0 && avgwid==0))
return( false );
/* This is a scaleable bitmap. They look ugly when scaled, so don't accept them */
if ( pixelh==0 && screenw!=0 )
return( false );
uc_strcpy(map,pt+1);
/*info->point = pointh/10;*/
info->point = (pixelh*72+screen_res/2)/screen_res;
info->res = screenw;
info->name = name;
info->style = fs_none;
if ( *ital=='r' ) info->style = fs_none;
else if ( *ital=='i' || *ital=='I' || *ital=='o' || *ital=='O' ) info->style = fs_italic;
/* I had thought the choices for proportional were m (mono) and p (prop) */
/* but jis has a c here, and I don't know what that means. jis is mono */
info->prop = true;
if ( *prop=='m' || *prop=='M' ) info->prop = false;
else if ( *prop=='c' || *prop=='C' ) info->prop = false;
info->mapname = NULL;
if (( info->map = _GDraw_ParseMapping(map))== em_none ) {
if ( uc_strmatch(map,"sunolglyph-1")==0 || uc_strmatch(map,"sunolcursor-1")==0 )
return( false );
if ( uc_strmatch(name,"symbol")==0 && uc_strmatch(map,"adobe-fontspecific")==0 )
info->map = em_symbol;
else if ( uc_strmatch(name,"zapfdingbats")==0 )
info->map = em_zapfding;
else {
info->map = em_max;
info->mapname = u_copy(map);
}
}
/* SUSE bug */
if ( strcmp(foundary,"greek")==0 && info->map==em_iso8859_1 )
info->map = em_iso8859_7;
/* End workaround */
if ( uc_strstrmatch(conext,"condensed")!=NULL )
info->style |= fs_condensed;
else if ( uc_strstrmatch(conext,"extended")!=NULL )
info->style |= fs_extended;
/* I don't know where smallcaps should be placed, so look everywhere */
if ( strstrmatch(xname,"small")!=NULL && strstrmatch(xname,"cap")!=NULL )
info->style |= fs_smallcaps;
info->ft = ft_unknown;
if ( uc_strstrmatch(name,"sans")!=NULL )
info->ft = ft_sans;
else if ( uc_strstrmatch(name,"serif")!=NULL )
info->ft = ft_serif;
info->iw_weight = _GDraw_FontFigureWeights(weight);
return( true );
}
static void GXDrawHashFont(FState *fonts,char *xname,struct font_decomp *decomp) {
int map = decomp->map;
struct font_name *fn = _GDraw_HashFontFamily(fonts,decomp->name,decomp->prop);
struct font_data *fd;
if ( fn->ft == ft_unknown && decomp->ft!=ft_unknown )
fn->ft = decomp->ft;
for ( fd=fn->data[map]; fd!=NULL; fd=fd->next )
if ( strcmp(fd->localname,xname)==0 ) /* Why duplicates? */
return;
#ifdef GREEK_BUG
printf( "Adding %s map=%d\n", xname, map);
#endif
fd = gcalloc(1,sizeof(struct font_data));
fd->next = fn->data[map];
fn->data[map] = fd;
fd->point_size = decomp->point;
fd->weight = decomp->iw_weight;
fd->style = decomp->style;
fd->localname = copy(xname);
fd->parent = fn;
fd->map = map;
fd->charmap_name = u_copy(decomp->mapname);
fd->x_height = fd->cap_height = 0;
if ( fd->point_size==0 )
fd->is_scalable = true;
}
static void _GXDraw_InitFonts(GXDisplay *gxdisplay) {
Display *display = gxdisplay->display;
char **ret;
int ret_len, i;
struct font_decomp decomp;
FState *fs = gcalloc(1,sizeof(FState));
/* In inches, because that's how fonts are measured */
gxdisplay->fontstate = fs;
fs->res = gxdisplay->res;
fs->res_closer_to = fs->res<=88 ? 75: 100;
fs->allow_scaling = 1;
/* Search for those font names which fit the standard format */
ret = XListFonts(display,"-*-*-*-*-*--*-*-*-*-*-*-*-*",8000,&ret_len);
for ( i=0; i<ret_len; ++i ) {
if ( decompose_screen_name(ret[i],&decomp,fs->res)) {
GXDrawHashFont(gxdisplay->fontstate,ret[i],&decomp);
if ( decomp.map == em_max )
free( decomp.mapname );
}
}
_GDraw_RemoveDuplicateFonts(gxdisplay->fontstate);
_GDraw_FillLastChance(gxdisplay->fontstate);
XFreeFontNames(ret);
/* Input servers need a fontset to draw characters with. Now we don't know*/
/* what the input server is going to need because parsing locale names is*/
/* a somewhat arcane art. So let's just include one font from every encod*/
/* ing we've got. Amazingly that's just what one of our font_instance */
/* structures contains. All we need do is reformat it. */
if ( gxdisplay->im!=NULL ) {
FontRequest rq;
static const unichar_t fam[] = { 'h','e','l','v','e','t','i','c','a',',','a','r','i','a','l',',','f','i','x','e','d',',','m','i','n','g',',','g','o','t','h','i','c',',','m','i','n','c','h','o', '\0' };
struct font_instance *fi;
int i,len;
char *names;
char **missing_list;
int missing_count;
char *def_string;
memset(&rq,0,sizeof(rq));
rq.point_size = -16;
rq.weight = 400;
rq.family_name = fam;
fi = GDrawInstanciateFont( (GDisplay *) gxdisplay,&rq);
for ( i=len=0; i<em_max; ++i ) if ( fi->fonts[i]!=NULL )
len += strlen(fi->fonts[i]->localname)+1;
names = galloc(len+2); *names = '\0';
for ( i=len=0; i<em_max; ++i ) if ( fi->fonts[i]!=NULL ) {
strcat(names,fi->fonts[i]->localname);
strcat(names,",");
}
names[strlen(names)-1] = '\0'; /* Remove extranious comma */
gxdisplay->def_im_fontset = XCreateFontSet(gxdisplay->display, names, &missing_list,
&missing_count, &def_string);
if ( gxdisplay->def_im_fontset==NULL ) {
fprintf(stderr,"Failed to create a fontset for the input method\n%s\n", names );
XCloseIM(gxdisplay->im);
gxdisplay->im = NULL;
}
free(names);
}
}
/* ************************************************************************** */
/* ****************************** COLOR Stuff ******************************* */
/* ************************************************************************** */
#define DIV_BY_0x33(x) (((x)*1286)>>16) /* Fast way to do x/0x33 */
#define RND_BY_0x33(x) (((x+0x19)*1286)>>16)
#define DIV_BY_0x11(x) (((x)*241)>>12) /* Fast way to do x/0x11 */
#define RND_BY_0x11(x) (((x+8)*241)>>12)
static void _GXDraw_FindVisual(GXDisplay *gdisp) {
#if 0
Display *display = gdisp->display;
ScreenFormat *sf;
int i;
/* I can't get the code to work on Irix */
gdisp->visual = DefaultVisual(display,gdisp->screen);
gdisp->depth = DefaultDepth(display,gdisp->screen);
gdisp->bitmap_pad = gdisp->pixel_size = gdisp->depth;
for ( i=0; i<((_XPrivDisplay) display)->nformats; ++i ) {
sf = &((_XPrivDisplay) display)->pixmap_format[i];
if ( sf->depth == gdisp->depth ) {
gdisp->pixel_size = sf->bits_per_pixel;
gdisp->bitmap_pad = sf->scanline_pad;
break;
}
}
gdisp->cmap = DefaultColormap(display,gdisp->screen);
#else
/* In the old days before 24bit color was common, a 32 bit visual was */
/* the standard way to go (extra 8 bits were ignored). Then came the */
/* composite extension which supported alpha channels in images, and */
/* we had to be careful what went into the extra byte, 0 doesn't work */
static int oldvsearch[][2] = {{ 32, TrueColor },
{ 24, TrueColor },
{ 16, TrueColor },
{ 15, TrueColor },
{ 12, TrueColor },
{0}};
static int newvsearch[][2] = {{ 24, TrueColor },
{ 16, TrueColor },
{ 15, TrueColor },
{ 12, TrueColor },
{0}};
static int v2search[][2] = {{ 8, PseudoColor },
{ 8, GrayScale },
{ 1, GrayScale },
{ 1, StaticGray }};
int (*vsearch)[2] = gdisp->supports_alpha_images || gdisp->supports_alpha_windows
? newvsearch : oldvsearch;
Display *display = gdisp->display;
XVisualInfo vinf, *ret;
int pixel_size, vc, i, j, first;
ScreenFormat *sf;
int user=false, cnt;
if ( gdisp->desired_depth!=-1 || gdisp->desired_vc!=-1 ) {
vinf.depth = gdisp->desired_depth;
vinf.class = gdisp->desired_vc;
ret = XGetVisualInfo(display,
(gdisp->desired_depth==-1?0:VisualDepthMask )|
(gdisp->desired_vc==-1?0:VisualClassMask ),
&vinf, &cnt);
if ( cnt>0 ) {
for ( i=0; i<cnt; ++i )
if ( ret[i].visual==DefaultVisual(display,gdisp->screen))
break;
if ( i==cnt )
i=0;
gdisp->visual = ret[i].visual;
gdisp->depth = ret[i].depth;
user = true;
XFree(ret);
} else
fprintf( stderr, "Failed to find your desired visual structure\n" );
}
/* I'd like TrueColor if I can get it */
if ( gdisp->visual == NULL ) {
for ( i=0; vsearch[i][0]!=0 ; ++i ) {
vinf.depth = vsearch[i][0];
vinf.class = vsearch[i][1];
ret = XGetVisualInfo(display,
(gdisp->desired_depth==-1?0:VisualDepthMask )|
(gdisp->desired_vc==-1?0:VisualClassMask ),
&vinf, &cnt);
if ( cnt>0 ) {
for ( j=0; j<cnt; ++j )
if ( ret[j].visual==DefaultVisual(display,gdisp->screen))
break;
if ( j==cnt )
j=0;
gdisp->visual = ret[j].visual;
gdisp->depth = ret[j].depth;
user = true;
XFree(ret);
break;
}
}
}
if ( gdisp->visual == NULL ) {
gdisp->visual = DefaultVisual(display,gdisp->screen);
gdisp->depth = DefaultDepth(display,gdisp->screen);
}
/* Failing TrueColor I'd like PseudoColor on color displays, and GreyScale*/
/* on monochrom displays */
if ( !user ) {
if ( gdisp->visual->class==DirectColor || gdisp->visual->class==StaticColor ) {
if ( XMatchVisualInfo(display,gdisp->screen,8,PseudoColor,&vinf)) {
gdisp->visual = vinf.visual;
gdisp->depth = 8;
}
} else if ( gdisp->visual->class==GrayScale || gdisp->visual->class==StaticGray ) {
if ( XMatchVisualInfo(display,gdisp->screen,8,GrayScale,&vinf)) {
gdisp->visual = vinf.visual;
gdisp->depth = 8;
}
}
}
for ( first = true; ; ) {
/* I want not only the number of meaningful bits in a pixel (which is the */
/* depth) but also the number of bits in pixel when writing an image */
/* I wish I knew how to do this without diving into hidden X structures */
#ifndef __VMS
#ifndef XlibSpecificationRelease
/* X11R4 (which doesn't define XlibSpecificationRelease) doesn't */
/* define _XPrivDisplay, either. The information just lives in the */
/* display structure */
# define _XPrivDisplay struct _XDisplay *
#elif XlibSpecificationRelease==5
/* X11R5 doesn't define it either */ /* Not sure. Should it be struct Display * ? */
# define _XPrivDisplay struct _XDisplay *
#endif
#endif
gdisp->bitmap_pad = gdisp->pixel_size = gdisp->depth;
for ( i=0; i<((_XPrivDisplay) display)->nformats; ++i ) {
sf = &((_XPrivDisplay) display)->pixmap_format[i];
if ( sf->depth == gdisp->depth ) {
gdisp->pixel_size = sf->bits_per_pixel;
gdisp->bitmap_pad = sf->scanline_pad;
break;
}
}
if ( gdisp->pixel_size==1 || gdisp->pixel_size==8 || gdisp->pixel_size==16 ||
gdisp->pixel_size==24 || gdisp->pixel_size==32 )
break; /* We like it */
else if ( first ) {
/* If I still don't have something I can work with, try for black&white */
for ( i=0; i<sizeof(v2search)/(2*sizeof(int)); ++i ) {
if ( XMatchVisualInfo(display,gdisp->screen,v2search[i][0],v2search[i][1],&vinf)) {
gdisp->visual = vinf.visual;
gdisp->depth = vinf.depth;
break;
}
}
first = false;
} else
break;
}
pixel_size = gdisp->pixel_size; vc = gdisp->visual->class;
if ( pixel_size==1 || pixel_size==8 ||
((pixel_size==16 || pixel_size==24 || pixel_size==32) && vc==TrueColor))
/* We can deal with it */;
else if ( vc==TrueColor || ( vc==PseudoColor && pixel_size<8)) {
fprintf( stderr, "%s will not work well with this visual. Colored images will be displayed as bitmaps\n", GResourceProgramName );
} else {
fprintf( stderr, "%s will not work with this visual. Restart your X server with a TrueColor\n", GResourceProgramName );
fprintf( stderr, " visual (You do this on an SGI by adding an argument \"-class TrueColor\" to\n" );
fprintf( stderr, " the command which starts up X, which is probably in /var/X11/xdm/Xservers.\n" );
fprintf( stderr, " On a sun you add \"-cc 4\" to the server start line, probably found in\n" );
fprintf( stderr, " /usr/lib/X11/xdm/Xservers).\n" );
exit(1);
}
if ( gdisp->visual == DefaultVisual(display,gdisp->screen)) {
gdisp->cmap = DefaultColormap(display,gdisp->screen);
gdisp->default_visual = true;
} else {
gdisp->cmap = XCreateColormap(display,gdisp->root,gdisp->visual,
AllocNone);
XInstallColormap(display,gdisp->cmap);
}
#endif
}
static int _GXDraw_AllocColors(GXDisplay *gdisp,XColor *x_colors) {
/* Try to insure that the standard colours we expect to use are available */
/* in the default colormap */
Display *display = gdisp->display;
XColor *acolour;
static unsigned short rgb[][3]={
{0x8000,0x8000,0x8000}, {0x4000,0x4000,0x4000},
{0xc000,0xc000,0xc000},
{0x1100,0x1100,0x1100}, {0x2200,0x2200,0x2200},
/*{0x3300,0x3300,0x3300},*/ {0x5500,0x5500,0x5500},
/*{0x6600,0x6600,0x6600},*/ {0x7700,0x7700,0x7700},
{0xaa00,0xaa00,0xaa00}, {0xbb00,0xbb00,0xbb00},
{0xdd00,0xdd00,0xdd00}, {0xee00,0xee00,0xee00},
};
int i, r,g,b;
static int cube[] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
acolour = x_colors;
for(r = 5; r >= 0; --r) {
for(g = 5; g >= 0; --g) {
for(b = 5; b >= 0; --b) {
acolour->red = (cube[r]<<8)|cube[r];
acolour->green = (cube[g]<<8)|cube[g];
acolour->blue = (cube[b]<<8)|cube[b];
acolour->pixel = 0;
acolour->flags = 7;
if ( XAllocColor(display,gdisp->cmap,acolour))
++acolour;
}}}
for ( i=0; i<sizeof(rgb)/sizeof(rgb[0]); ++i ) {
acolour->red = rgb[i][0];
acolour->green = rgb[i][1];
acolour->blue = rgb[i][2];
if ( XAllocColor(display,gdisp->cmap,acolour))
++acolour;
}
return( acolour-x_colors );
}
static void _GXDraw_AllocGreys(GXDisplay *gdisp) {
Display *display = gdisp->display;
XColor xcolour;
int step = 255/((1<<gdisp->depth)-1), r;
for(r = 0; r < 256; r+=step ) {
xcolour.red = r<<8;
xcolour.green = r<<8;
xcolour.blue = r<<8;
XAllocColor(display,gdisp->cmap,&xcolour);
}
}
static int _GXDraw_CopyColors(GXDisplay *gdisp, XColor *x_colors, Colormap new) {
int i;
for ( i=0; i<(1<<gdisp->depth); ++i )
x_colors[i].pixel = i;
XQueryColors(gdisp->display,gdisp->cmap,x_colors,1<<gdisp->depth);
XStoreColors(gdisp->display,new,x_colors,1<<gdisp->depth);
gdisp->cmap = new;
return( 1<<gdisp->depth );
}
static int FindAllColors(GXDisplay *gdisp, XColor *x_colors) {
int i;
for ( i=0; i<(1<<gdisp->depth); ++i )
x_colors[i].pixel = i;
XQueryColors(gdisp->display,gdisp->cmap,x_colors,1<<gdisp->depth);
return( 1<<gdisp->depth );
}
static void InitTrueColor(GXDisplay *gdisp) {
Visual *vis = gdisp->visual;
int red_shift, green_shift, blue_shift;
int red_bits_shift, blue_bits_shift, green_bits_shift;
/* The SGI display is not RGB but BGR. X says TrueColor maps are increasing */
for ( red_shift=0; red_shift<24 && !(vis->red_mask&(1<<red_shift)); ++red_shift );
for ( green_shift=0; green_shift<24 && !(vis->green_mask&(1<<green_shift)); ++green_shift );
for ( blue_shift=0; blue_shift<24 && !(vis->blue_mask&(1<<blue_shift)); ++blue_shift );
gdisp->cs.red_shift = red_shift;
gdisp->cs.green_shift = green_shift;
gdisp->cs.blue_shift = blue_shift;
gdisp->cs.red_bits_mask = vis->red_mask>>red_shift;
gdisp->cs.green_bits_mask = vis->green_mask>>green_shift;
gdisp->cs.blue_bits_mask = vis->blue_mask>>blue_shift;
for ( red_bits_shift=0; gdisp->cs.red_bits_mask&(1<<red_bits_shift) ;
++red_bits_shift );
for ( green_bits_shift=0; gdisp->cs.green_bits_mask&(1<<green_bits_shift) ;
++green_bits_shift );
for ( blue_bits_shift=0; gdisp->cs.blue_bits_mask&(1<<blue_bits_shift) ;
++blue_bits_shift );
gdisp->cs.red_bits_shift = 24-red_bits_shift;
gdisp->cs.green_bits_shift = 16-green_bits_shift;
gdisp->cs.blue_bits_shift = 8-blue_bits_shift;
gdisp->cs.alpha_bits = 0xffffffff&~(vis->red_mask|vis->green_mask|vis->blue_mask);
}
static void _GXDraw_InitCols(GXDisplay *gdisp) {
int i;
XColor x_colors[256];
GClut clut;
int x_color_max;
int vclass, depth;
int n=0;
char **extlist = XListExtensions(gdisp->display,&n);
for ( i=0; i<n; ++i ) {
if ( strcasecmp(extlist[i],"Composite")==0 ) { /* "Render"??? */
/* Silly me. I had assumed that writing an alpha channel image to a window*/
/* would do overlay composition on what was in the window. Instead it */
/* overwrites the window, and retains the alpha channel so that the */
/* window becomes translucent, rather than the image. */
/* In otherwords, it is totally useless to me */
/* gdisp->supports_alpha_images = true; */
gdisp->supports_alpha_windows = true;
break;
}
}
if ( extlist!=NULL )
XFreeExtensionList(extlist);
_GXDraw_FindVisual(gdisp);
if ( gdisp->depth!=32 && gdisp->supports_alpha_images )
gdisp->supports_alpha_images = false;
vclass = gdisp->visual->class;
depth = gdisp->depth;
if ( depth<=8 ) {
memset(&clut,'\0',sizeof(clut));
if ( vclass==StaticGray || vclass == GrayScale ) {
_GXDraw_AllocGreys(gdisp);
gdisp->cs.is_grey = clut.is_grey = true;
x_color_max = FindAllColors(gdisp,x_colors);
} else if ( gdisp->desired_cm==cmt_private ) {
gdisp->cmap = XCreateColormap(gdisp->display,gdisp->root,
gdisp->visual,AllocNone);
XInstallColormap(gdisp->display,gdisp->cmap);
x_color_max = _GXDraw_AllocColors(gdisp,x_colors);
} else {
x_color_max = _GXDraw_AllocColors(gdisp,x_colors);
if (( gdisp->desired_cm==cmt_default && x_color_max<30 ) ||
gdisp->desired_cm==cmt_copy ) {
x_color_max = _GXDraw_CopyColors(gdisp,x_colors,
XCreateColormap(gdisp->display,gdisp->root,
gdisp->visual,AllocAll));
XInstallColormap(gdisp->display,gdisp->cmap);
}
}
clut.clut_len = x_color_max;
for ( i=0; i<x_color_max; ++i )
clut.clut[x_colors[i].pixel] = COLOR_CREATE(x_colors[i].red>>8,x_colors[i].green>>8,x_colors[i].blue>>8);
gdisp->cs.rev = GClutReverse(&clut,8);
} else if ( vclass==TrueColor )
InitTrueColor(gdisp);
}
unsigned long _GXDraw_GetScreenPixel(GXDisplay *gdisp, Color col) {
if ( gdisp->depth==24 )
return( Pixel24(gdisp,col) );
else if ( gdisp->depth==32 )
return( Pixel32(gdisp,col) );
else if ( gdisp->depth>8 )
return( Pixel16(gdisp,col));
return( _GImage_GetIndexedPixel/*Precise*/(col, gdisp->cs.rev)->pixel );
}
/* ****************************** Error Handler ***************************** */
static char *XProtocalCodes[] = {
"X_Undefined_0",
"X_CreateWindow",
"X_ChangeWindowAttributes",
"X_GetWindowAttributes",
"X_DestroyWindow",
"X_DestroySubwindows",
"X_ChangeSaveSet",
"X_ReparentWindow",
"X_MapWindow",
"X_MapSubwindows",
"X_UnmapWindow",
"X_UnmapSubwindows",
"X_ConfigureWindow",
"X_CirculateWindow",
"X_GetGeometry",
"X_QueryTree",
"X_InternAtom",
"X_GetAtomName",
"X_ChangeProperty",
"X_DeleteProperty",
"X_GetProperty",
"X_ListProperties",
"X_SetSelectionOwner",
"X_GetSelectionOwner",
"X_ConvertSelection",
"X_SendEvent",
"X_GrabPointer",
"X_UngrabPointer",
"X_GrabButton",
"X_UngrabButton",
"X_ChangeActivePointerGrab",
"X_GrabKeyboard",
"X_UngrabKeyboard",
"X_GrabKey",
"X_UngrabKey",
"X_AllowEvents",
"X_GrabServer",
"X_UngrabServer",
"X_QueryPointer",
"X_GetMotionEvents",
"X_TranslateCoords",
"X_WarpPointer",
"X_SetInputFocus",
"X_GetInputFocus",
"X_QueryKeymap",
"X_OpenFont",
"X_CloseFont",
"X_QueryFont",
"X_QueryTextExtents",
"X_ListFonts",
"X_ListFontsWithInfo",
"X_SetFontPath",
"X_GetFontPath",
"X_CreatePixmap",
"X_FreePixmap",
"X_CreateGC",
"X_ChangeGC",
"X_CopyGC",
"X_SetDashes",
"X_SetClipRectangles",
"X_FreeGC",
"X_ClearArea",
"X_CopyArea",
"X_CopyPlane",
"X_PolyPoint",
"X_PolyLine",
"X_PolySegment",
"X_PolyRectangle",
"X_PolyArc",
"X_FillPoly",
"X_PolyFillRectangle",
"X_PolyFillArc",
"X_PutImage",
"X_GetImage",
"X_PolyText8",
"X_PolyText16",
"X_ImageText8",
"X_ImageText16",
"X_CreateColormap",
"X_FreeColormap",
"X_CopyColormapAndFree",
"X_InstallColormap",
"X_UninstallColormap",
"X_ListInstalledColormaps",
"X_AllocColor",
"X_AllocNamedColor",
"X_AllocColorCells",
"X_AllocColorPlanes",
"X_FreeColors",
"X_StoreColors",
"X_StoreNamedColor",
"X_QueryColors",
"X_LookupColor",
"X_CreateCursor",
"X_CreateGlyphCursor",
"X_FreeCursor",
"X_RecolorCursor",
"X_QueryBestSize",
"X_QueryExtension",
"X_ListExtensions",
"X_ChangeKeyboardMapping",
"X_GetKeyboardMapping",
"X_ChangeKeyboardControl",
"X_GetKeyboardControl",
"X_Bell",
"X_ChangePointerControl",
"X_GetPointerControl",
"X_SetScreenSaver",
"X_GetScreenSaver",
"X_ChangeHosts",
"X_ListHosts",
"X_SetAccessControl",
"X_SetCloseDownMode",
"X_KillClient",
"X_RotateProperties",
"X_ForceScreenSaver",
"X_SetPointerMapping",
"X_GetPointerMapping",
"X_SetModifierMapping",
"X_GetModifierMapping",
"X_Undefined_120",
"X_Undefined_121",
"X_Undefined_122",
"X_Undefined_123",
"X_Undefined_124",
"X_Undefined_125",
"X_Undefined_126",
"X_NoOperation"
};
static char *lastfontrequest;
static int myerrorhandler(Display *disp, XErrorEvent *err) {
/* Under twm I get a bad match, under kde a bad window? */
char buffer[200], *majorcode;
if (err->request_code>0 && err->request_code<128)
majorcode = XProtocalCodes[err->request_code];
#if 0 /* This varies. it is 146 on my machine, but not on everyone's */
else if ( err->request_code==146 )
majorcode = "XInputExtension";
#endif
else
majorcode = "";
if ( err->request_code==45 && lastfontrequest!=NULL )
fprintf( stderr, "Error attempting to load font:\n %s\nThe X Server clained the font existed, but when I asked for it,\nI got this error instead:\n\n", lastfontrequest );
#if 0 /* This varies. it is 146 on my machine, but not on everyone's */
else if ( err->request_code==146 && err->minor_code==3 )
fprintf( stderr, "Error connecting to wacom tablet. Sometimes linux fails to configure\n it properly. Try typing\n$ su\n# insmod wacom\n" );
#endif
XGetErrorText(disp,err->error_code,buffer,sizeof(buffer));
fprintf( stderr, "X Error of failed request: %s\n", buffer );
fprintf( stderr, " Major opcode of failed request: %d.%d (%s)\n",
err->request_code, err->minor_code, majorcode );
fprintf( stderr, " Serial number of failed request: %ld\n", (long) err->serial );
fprintf( stderr, " Failed resource ID: %x\n", (unsigned int) err->resourceid );
raise(SIGABRT); /* I want something that alerts the debugger, not a semi-successful exit */
return( 1 );
}
/* ************************************************************************** */
static void _GXDraw_InitAtoms( GXDisplay *gdisp) {
Display *display = gdisp->display;
gdisp->atoms.wm_del_window = XInternAtom(display,"WM_DELETE_WINDOW",False);
gdisp->atoms.wm_protocols = XInternAtom(display,"WM_PROTOCOLS",False);
gdisp->atoms.drag_and_drop = XInternAtom(display,"DRAG_AND_DROP",False);
}
static Cursor StdCursor[ct_user] = { 0 };
static int cursor_map[ct_user] = { 0,
XC_left_ptr, /* pointer */
XC_right_ptr, /* backpointer */
XC_hand2, /* hand */
XC_question_arrow, /* question */
XC_tcross, /* cross */
XC_fleur, /* 4way */
XC_xterm, /* text */
XC_watch, /* watch */
XC_right_ptr }; /* drag and drop */
static Cursor _GXDraw_GetCursor( GXDisplay *gdisp, enum cursor_types ct ) {
Display *display = gdisp->display;
if ( ct>=ct_user )
return( ct-ct_user );
else if ( ct==ct_default )
return( CopyFromParent );
if ( StdCursor[ct]==0 ) {
XColor fb[2];
fb[0].red = COLOR_RED(gdisp->def_foreground)*0x101; fb[0].green = COLOR_GREEN(gdisp->def_foreground)*0x101; fb[0].blue = COLOR_BLUE(gdisp->def_foreground)*0x101;
fb[1].red = COLOR_RED(gdisp->def_background)*0x101; fb[1].green = COLOR_GREEN(gdisp->def_background)*0x101; fb[1].blue = COLOR_BLUE(gdisp->def_background)*0x101;
if ( ct==ct_invisible ) {
static short zeros[16]={0};
Pixmap temp = XCreatePixmapFromBitmapData(display,gdisp->root,
(char *) zeros,16,16,1,0,1);
StdCursor[ct] = XCreatePixmapCursor(display,temp,temp,&fb[0],&fb[1],0,0);
XFreePixmap(display,temp);
} else {
StdCursor[ct] = XCreateFontCursor(display,cursor_map[ct]);
/*XRecolorCursor(display,StdCursor[ct],&fb[0],&fb[1]);*/
}
}
return( StdCursor[ct]);
}
/* ************************************************************************** */
/* ************************** Utility Routines ****************************** */
/* ************************************************************************** */
static void initParentissimus(GXDisplay *gdisp, Window wind) {
Display *display = gdisp->display;
Window par, *children, root;
unsigned int junk,width,height; int sjunk;
while (1) {
XQueryTree(display,wind,&root,&par,&children,&junk);
XFree(children);
if ( par==root )
break;
wind = par;
}
XGetGeometry(display,wind,&root,&sjunk,&sjunk,&width,&height,
&junk,&junk);
if (( width>DisplayWidth(display,gdisp->screen) &&
height>=DisplayHeight(display,gdisp->screen)) ||
( width>=DisplayWidth(display,gdisp->screen) &&
height>DisplayHeight(display,gdisp->screen)) )
gdisp->virtualRoot = wind;
else
gdisp->virtualRoot = root;
}
static int qterror(Display *disp, XErrorEvent *err) {
/* under kde a bad window? */
if ( err->error_code == BadMatch || err->error_code == BadWindow ) {
} else {
myerrorhandler(disp,err);
}
return( 1 );
}
static Window GetParentissimus(GXWindow gw) {
GXDisplay *gdisp = gw->display;
Display *display = gdisp->display;
Window par, *children, root, wind = gw->w;
unsigned int junk;
fd_set junkset;
struct timeval tenthsec;
if ( gw->parentissimus )
return( gw->parentissimus );
if ( gdisp->virtualRoot==BadAlloc ) /* Check for vtwm */
initParentissimus(gdisp,wind);
/* For reasons quite obscure to me, XQueryTree gives a BadWindow error */
/* under kde and gnome if there is no pause in the loop. XQueryTree */
/* isn't even documented to fail, so it's all very strange */
FD_ZERO(&junkset);
tenthsec.tv_sec = 0;
tenthsec.tv_usec = 100000;
XSync(gdisp->display,false);
GDrawProcessPendingEvents((GDisplay *) gdisp);
XSetErrorHandler(/*gdisp->display,*/qterror);
/* Find the top window, some window managers will add two layers of */
/* decoration windows, (some might add none), some will have a virtualRoot*/
while (1) {
if ( XQueryTree(display,wind,&root,&par,&children,&junk)==0 ) {
XSetErrorHandler(/*gdisp->display,*/myerrorhandler);
return( gw->w ); /* How can it fail? It does though */
}
if (children)
XFree(children);
if ( par==root || par==gdisp->virtualRoot ) {
gw->parentissimus = wind;
XSetErrorHandler(/*gdisp->display,*/myerrorhandler);
return(wind);
}
wind = par;
select(0,&junkset,&junkset,&junkset,&tenthsec);
}
}
/* ************************************************************************** */
/* ************************** Control Routines ****************************** */
/* ************************************************************************** */
static void GXDrawInit(GDisplay *gdisp) {
_GXDraw_InitCols( (GXDisplay *) gdisp);
_GXDraw_InitAtoms( (GXDisplay *) gdisp);
_GXDraw_InitFonts((GXDisplay *) gdisp);
}
static void GXDrawTerm(GDisplay *gdisp) {
}
static void *GXDrawNativeDisplay(GDisplay *gdisp) {
return( ((GXDisplay *) gdisp)->display );
}
static GGC *_GXDraw_NewGGC() {
GGC *ggc = gcalloc(1,sizeof(GGC));
ggc->clip.width = ggc->clip.height = 0x7fff;
ggc->fg = 0;
ggc->bg = 0xffffff;