#pragma prototyped
#include "common.h"
#include "g.h"
#include "gcommon.h"
#include "mem.h"
#ifdef FEATURE_GMAP
#include <gmap.h>
#endif
#define WCU widget->u.c
#define WINDOW widget->u.c->window
#define GC widget->u.c->gc
#define ISVISIBLE(r) ( \
(r.o.x <= WCU->clip.c.x) && (r.c.x >= WCU->clip.o.x) && \
(r.o.y <= WCU->clip.c.y) && (r.c.y >= WCU->clip.o.y) \
)
#define IS8BIT(font) ((font)->min_byte1 == 0 && (font)->max_byte1 == 0)
static struct cursormap_t {
Cursor id;
char name[40];
} cursormap[XC_num_glyphs];
static int curcursori = -1;
#define max(a, b) (((a) >= (b)) ? (a) : (b))
#define min(a, b) (((a) <= (b)) ? (a) : (b))
static char gstyles[][2] = {
{ 16, 0, },
{ 4, 4, },
{ 2, 2, },
{ 4, 12, },
{ 12, 4, },
};
static char grays[][4] = {
{ 0x00,0x00,0x00,0x00, },
{ 0x08,0x00,0x00,0x00, },
{ 0x08,0x00,0x02,0x00, },
{ 0x0A,0x00,0x02,0x00, },
{ 0x0A,0x00,0x0A,0x00, },
{ 0x0A,0x04,0x0A,0x00, },
{ 0x0A,0x04,0x0A,0x01, },
{ 0x0A,0x05,0x0A,0x01, },
{ 0x0A,0x05,0x0A,0x05, },
{ 0x0E,0x05,0x0A,0x05, },
{ 0x0E,0x05,0x0B,0x05, },
{ 0x0F,0x05,0x0B,0x05, },
{ 0x0F,0x05,0x0F,0x05, },
{ 0x0F,0x0D,0x0F,0x05, },
{ 0x0F,0x0D,0x0F,0x07, },
{ 0x0F,0x0F,0x0F,0x07, },
{ 0x0F,0x0F,0x0F,0x0F, },
};
static void bezier (PIXpoint_t, PIXpoint_t, PIXpoint_t, PIXpoint_t);
static XFontStruct *findfont (char *, int);
static int scalebitmap (Gwidget_t *, Gbitmap_t *, Gsize_t, int, int);
static void setgattr (Gwidget_t *, Ggattr_t *);
static PIXrect_t rdrawtopix (Gwidget_t *, Grect_t);
static PIXpoint_t pdrawtopix (Gwidget_t *, Gpoint_t);
static PIXsize_t sdrawtopix (Gwidget_t *, Gsize_t);
static Gpoint_t Gppixtodraw (Gwidget_t *, PIXpoint_t);
static Gsize_t spixtodraw (Gwidget_t *, PIXsize_t);
static Grect_t rpixtodraw (Gwidget_t *, PIXrect_t);
static PIXrect_t rdrawtobpix (Gbitmap_t *, Grect_t);
static PIXpoint_t pdrawtobpix (Gbitmap_t *, Gpoint_t);
static void adjustclip (Gwidget_t *);
static Bool cwvpredicate (Display *, XEvent *, XPointer);
static void cweventhandler (Widget, XtPointer, XEvent *, Boolean *);
static Bool cwepredicate (Display *, XEvent *, XPointer);
int GCcreatewidget (Gwidget_t *parent, Gwidget_t *widget,
int attrn, Gwattr_t *attrp) {
PIXsize_t ps;
Dimension width, height;
#ifdef FEATURE_BACKINGSTORE
XSetWindowAttributes xswa;
#endif
XEvent ev;
XColor *cp;
XGCValues gcv;
int curi, color, ai, r, g, b, i;
#ifdef FEATURE_GMAP
XVisualInfo *vip;
int gmapmode = FALSE;
#endif
if (!parent) {
Gerr (POS, G_ERRNOPARENTWIDGET);
return -1;
}
WCU->func = NULL;
WCU->needredraw = FALSE;
WCU->buttonsdown = 0;
WCU->bstate[0] = WCU->bstate[1] = WCU->bstate[2] = 0;
ps.x = ps.y = MINCWSIZE;
RESETARGS;
for (ai = 0; ai < attrn; ai++) {
switch (attrp[ai].id) {
case G_ATTRSIZE:
GETSIZE (attrp[ai].u.s, ps, MINCWSIZE);
break;
case G_ATTRBORDERWIDTH:
ADD2ARGS (XtNborderWidth, attrp[ai].u.i);
break;
#ifdef FEATURE_GMAP
case G_ATTRMODE:
if (Strcmp ("gmap", attrp[ai].u.t) == 0) {
gmapmode = TRUE;
} else {
Gerr (POS, G_ERRBADATTRVALUE, attrp[ai].u.t);
return -1;
}
break;
#endif
case G_ATTRCURSOR:
break;
case G_ATTRCOLOR:
break;
case G_ATTRVIEWPORT:
break;
case G_ATTRWINDOW:
break;
case G_ATTRWINDOWID:
Gerr (POS, G_ERRCANNOTSETATTR1, "windowid");
return -1;
case G_ATTREVENTCB:
WCU->func = (Gcanvascb) attrp[ai].u.func;
break;
case G_ATTRUSERDATA:
widget->udata = attrp[ai].u.u;
break;
default:
Gerr (POS, G_ERRBADATTRID, attrp[ai].id);
return -1;
}
}
ADD2ARGS (XtNwidth, ps.x);
ADD2ARGS (XtNheight, ps.y);
#ifdef FEATURE_GMAP
if (gmapmode) {
vip = pfChooseFBConfig (Gdisplay, -1, NULL);
ADD2ARGS (GLwNvisualInfo, vip);
if (!(widget->w = XtCreateWidget ("graphics", glwDrawingAreaWidgetClass,
parent->w, argp, argn))) {
Gerr (POS, G_ERRCANNOTCREATEWIDGET);
return -1;
}
} else {
if (!(widget->w = XtCreateWidget ("graphics", coreWidgetClass,
parent->w, argp, argn))) {
Gerr (POS, G_ERRCANNOTCREATEWIDGET);
return -1;
}
}
WCU->gmapmode = gmapmode;
#else
if (!(widget->w = XtCreateWidget ("graphics", coreWidgetClass,
parent->w, argp, argn))) {
Gerr (POS, G_ERRCANNOTCREATEWIDGET);
return -1;
}
#endif
XtOverrideTranslations (widget->w, Gcwanytable);
XtAddEventHandler (widget->w, VisibilityChangeMask | ExposureMask,
FALSE, cweventhandler, (XtPointer) 0);
Glazymanage (widget->w);
Gflushlazyq ();
#ifdef FEATURE_BACKINGSTORE
xswa.backing_store = WhenMapped;
XChangeWindowAttributes (Gdisplay, XtWindow (widget->w),
CWBackingStore, &xswa);
#endif
XPeekIfEvent (Gdisplay, &ev, cwvpredicate, (XPointer) XtWindow (widget->w));
RESETARGS;
ADD2ARGS (XtNwidth, &width);
ADD2ARGS (XtNheight, &height);
XtGetValues (widget->w, argp, argn);
ps.x = width, ps.y = height;
WCU->window = XtWindow (widget->w);
WCU->cmap = DefaultColormap (Gdisplay, Gscreenn);
WCU->gc = XCreateGC (Gdisplay, WCU->window, 0, NULL);
RESETARGS;
WCU->colors[0].color.pixel = WCU->colors[1].color.pixel = 1000000;
ADD2ARGS (XtNbackground, &WCU->colors[0].color.pixel);
ADD2ARGS (XtNforeground, &WCU->colors[1].color.pixel);
XtGetValues (widget->w, argp, argn);
if (WCU->colors[0].color.pixel == 1000000) {
if (XGetGCValues (Gdisplay, GC, GCBackground, &gcv) != 0)
WCU->colors[0].color.pixel = gcv.background;
else
WCU->colors[0].color.pixel = WhitePixel (Gdisplay, Gscreenn);
}
if (WCU->colors[1].color.pixel == 1000000) {
if (XGetGCValues (Gdisplay, GC, GCForeground, &gcv) != 0)
WCU->colors[1].color.pixel = gcv.foreground;
else
WCU->colors[1].color.pixel = BlackPixel (Gdisplay, Gscreenn);
}
XQueryColor (Gdisplay, WCU->cmap, &WCU->colors[0].color);
WCU->colors[0].inuse = TRUE;
XQueryColor (Gdisplay, WCU->cmap, &WCU->colors[1].color);
WCU->colors[1].inuse = TRUE;
WCU->allocedcolor[0] = WCU->allocedcolor[1] = FALSE;
for (i = 2; i < G_MAXCOLORS; i++)
WCU->colors[i].inuse = FALSE;
WCU->gattr.color = 1;
XSetBackground (Gdisplay, GC, WCU->colors[0].color.pixel);
XSetForeground (Gdisplay, GC, WCU->colors[1].color.pixel);
WCU->gattr.width = 0;
WCU->gattr.mode = G_SRC;
WCU->gattr.fill = 0;
WCU->gattr.style = 0;
WCU->defgattr = WCU->gattr;
WCU->font = NULL;
WCU->wrect.o.x = 0.0, WCU->wrect.o.y = 0.0;
WCU->wrect.c.x = 1.0, WCU->wrect.c.y = 1.0;
WCU->vsize.x = ps.x, WCU->vsize.y = ps.y;
if (Gdepth == 1) {
XSetFillStyle (Gdisplay, GC, FillTiled);
for (i = 0; i < 17; i++)
WCU->grays[i] = XCreatePixmapFromBitmapData (Gdisplay, WCU->window,
&grays[i][0], 4, 4, BlackPixel (Gdisplay, Gscreenn),
WhitePixel (Gdisplay, Gscreenn), 1);
}
for (ai = 0; ai < attrn; ai++) {
switch (attrp[ai].id) {
case G_ATTRCURSOR:
if ((curi = XmuCursorNameToIndex (attrp[ai].u.t)) == -1) {
if (Strcmp (attrp[ai].u.t, "default") == 0) {
XUndefineCursor (Gdisplay, XtWindow (widget->w));
curcursori = -1;
} else {
Gerr (POS, G_ERRNOSUCHCURSOR, attrp[ai].u.t);
return -1;
}
} else {
if (!cursormap[curi].id) {
cursormap[curi].id = XCreateFontCursor (Gdisplay, curi);
strcpy (cursormap[curi].name, attrp[ai].u.t);
}
XDefineCursor (Gdisplay, XtWindow (widget->w),
cursormap[curi].id);
curcursori = curi;
}
break;
case G_ATTRCOLOR:
color = attrp[ai].u.c.index;
if (color < 0 || color > G_MAXCOLORS) {
Gerr (POS, G_ERRBADCOLORINDEX, color);
return -1;
}
r = attrp[ai].u.c.r * 257;
g = attrp[ai].u.c.g * 257;
b = attrp[ai].u.c.b * 257;
cp = &WCU->colors[color].color;
if (WCU->colors[color].inuse)
if (cp->red != r || cp->green != g || cp->blue != b)
if (color > 1 || WCU->allocedcolor[color])
XFreeColors (Gdisplay, WCU->cmap, &cp->pixel, 1, 0);
cp->red = r, cp->green = g, cp->blue = b;
if (XAllocColor (Gdisplay, WCU->cmap, cp)) {
WCU->colors[color].inuse = TRUE;
if (color <= 1)
WCU->allocedcolor[color] = TRUE;
}
cp->red = r, cp->green = g, cp->blue = b;
if (color == WCU->gattr.color)
WCU->gattr.color = -1;
if (color == 0 || color == 1) {
RESETARGS;
if (color == 0)
ADD2ARGS (XtNbackground, cp->pixel);
else
ADD2ARGS (XtNforeground, cp->pixel);
XtSetValues (widget->w, argp, argn);
}
break;
case G_ATTRVIEWPORT:
WCU->vsize.x = (int) (attrp[ai].u.s.x + 0.5);
WCU->vsize.y = (int) (attrp[ai].u.s.y + 0.5);
RESETARGS;
ADD2ARGS (XtNwidth, WCU->vsize.x);
ADD2ARGS (XtNheight, WCU->vsize.y);
XtSetValues (widget->w, argp, argn);
break;
case G_ATTRWINDOW:
WCU->wrect = attrp[ai].u.r;
break;
}
}
adjustclip (widget);
return 0;
}
int GCsetwidgetattr (Gwidget_t *widget, int attrn, Gwattr_t *attrp) {
PIXsize_t ps;
XColor *cp;
int curi, color, ai, r, g, b;
RESETARGS;
for (ai = 0; ai < attrn; ai++) {
switch (attrp[ai].id) {
case G_ATTRSIZE:
GETSIZE (attrp[ai].u.s, ps, MINCWSIZE);
ADD2ARGS (XtNwidth, ps.x);
ADD2ARGS (XtNheight, ps.y);
break;
case G_ATTRBORDERWIDTH:
ADD2ARGS (XtNborderWidth, attrp[ai].u.i);
break;
case G_ATTRCURSOR:
if ((curi = XmuCursorNameToIndex (attrp[ai].u.t)) == -1) {
if (Strcmp (attrp[ai].u.t, "default") == 0) {
XUndefineCursor (Gdisplay, XtWindow (widget->w));
curcursori = -1;
} else {
Gerr (POS, G_ERRNOSUCHCURSOR, attrp[ai].u.t);
return -1;
}
} else {
if (!cursormap[curi].id) {
cursormap[curi].id = XCreateFontCursor (Gdisplay, curi);
strcpy (cursormap[curi].name, attrp[ai].u.t);
}
XDefineCursor (Gdisplay, XtWindow (widget->w),
cursormap[curi].id);
curcursori = curi;
}
Gsync ();
break;
case G_ATTRCOLOR:
color = attrp[ai].u.c.index;
if (color < 0 || color > G_MAXCOLORS) {
Gerr (POS, G_ERRBADCOLORINDEX, color);
return -1;
}
r = attrp[ai].u.c.r * 257;
g = attrp[ai].u.c.g * 257;
b = attrp[ai].u.c.b * 257;
cp = &WCU->colors[color].color;
if (WCU->colors[color].inuse)
if (cp->red != r || cp->green != g || cp->blue != b)
if (color > 1 || WCU->allocedcolor[color])
XFreeColors (Gdisplay, WCU->cmap, &cp->pixel, 1, 0);
cp->red = r, cp->green = g, cp->blue = b;
if (XAllocColor (Gdisplay, WCU->cmap, cp)) {
WCU->colors[color].inuse = TRUE;
if (color <= 1)
WCU->allocedcolor[color] = TRUE;
}
cp->red = r, cp->green = g, cp->blue = b;
if (color == WCU->gattr.color)
WCU->gattr.color = -1;
break;
case G_ATTRVIEWPORT:
WCU->vsize.x = (int) (attrp[ai].u.s.x + 0.5);
WCU->vsize.y = (int) (attrp[ai].u.s.y + 0.5);
ADD2ARGS (XtNwidth, WCU->vsize.x);
ADD2ARGS (XtNheight, WCU->vsize.y);
XtSetValues (widget->w, argp, argn);
adjustclip (widget);
RESETARGS;
break;
case G_ATTRWINDOW:
WCU->wrect = attrp[ai].u.r;
XtSetValues (widget->w, argp, argn);
adjustclip (widget);
RESETARGS;
break;
case G_ATTRWINDOWID:
Gerr (POS, G_ERRCANNOTSETATTR2, "windowid");
return -1;
case G_ATTREVENTCB:
WCU->func = (Gcanvascb) attrp[ai].u.func;
break;
case G_ATTRUSERDATA:
widget->udata = attrp[ai].u.u;
break;
default:
Gerr (POS, G_ERRBADATTRID, attrp[ai].id);
return -1;
}
}
XtSetValues (widget->w, argp, argn);
return 0;
}
int GCgetwidgetattr (Gwidget_t *widget, int attrn, Gwattr_t *attrp) {
XColor *cp;
Dimension width, height;
int ai, color;
for (ai = 0; ai < attrn; ai++) {
RESETARGS;
switch (attrp[ai].id) {
case G_ATTRSIZE:
ADD2ARGS (XtNwidth, &width);
ADD2ARGS (XtNheight, &height);
XtGetValues (widget->w, argp, argn);
attrp[ai].u.s.x = width, attrp[ai].u.s.y = height;
break;
case G_ATTRBORDERWIDTH:
ADD2ARGS (XtNborderWidth, &width);
XtGetValues (widget->w, argp, argn);
attrp[ai].u.i = width;
break;
case G_ATTRCURSOR:
attrp[ai].u.t = (curcursori == -1) ?
"default" : cursormap[curcursori].name;
break;
case G_ATTRCOLOR:
color = attrp[ai].u.c.index;
if (color < 0 || color > G_MAXCOLORS) {
Gerr (POS, G_ERRBADCOLORINDEX, color);
return -1;
}
if (WCU->colors[color].inuse) {
cp = &WCU->colors[color].color;
attrp[ai].u.c.r = cp->red / 257.0;
attrp[ai].u.c.g = cp->green / 257.0;
attrp[ai].u.c.b = cp->blue / 257.0;
} else {
attrp[ai].u.c.r = -1;
attrp[ai].u.c.g = -1;
attrp[ai].u.c.b = -1;
}
break;
case G_ATTRVIEWPORT:
attrp[ai].u.s = WCU->vsize;
break;
case G_ATTRWINDOW:
attrp[ai].u.r = WCU->wrect;
break;
case G_ATTRWINDOWID:
sprintf (&Gbufp[0], "0x%lx", XtWindow (widget->w));
attrp[ai].u.t = &Gbufp[0];
break;
case G_ATTREVENTCB:
attrp[ai].u.func = (void*)(WCU->func);
break;
case G_ATTRUSERDATA:
attrp[ai].u.u = widget->udata;
break;
default:
Gerr (POS, G_ERRBADATTRID, attrp[ai].id);
return -1;
}
}
return 0;
}
int GCdestroywidget (Gwidget_t *widget) {
XtDestroyWidget (widget->w);
return 0;
}
int GCcanvasclear (Gwidget_t *widget) {
XEvent ev;
int gotit;
XClearWindow (Gdisplay, WINDOW);
WCU->needredraw = FALSE;
XSync (Gdisplay, False);
gotit = FALSE;
while (XCheckIfEvent (Gdisplay,
&ev, cwepredicate, (XPointer) WINDOW) == True)
gotit = TRUE;
if (gotit)
adjustclip (widget);
return 0;
}
int GCsetgfxattr (Gwidget_t *widget, Ggattr_t *ap) {
setgattr (widget, ap);
WCU->defgattr = WCU->gattr;
return 0;
}
int GCgetgfxattr (Gwidget_t *widget, Ggattr_t *ap) {
if ((ap->flags & G_GATTRCOLOR))
ap->color = WCU->gattr.color;
if ((ap->flags & G_GATTRWIDTH))
ap->width = WCU->gattr.width;
if ((ap->flags & G_GATTRMODE))
ap->mode = WCU->gattr.mode;
if ((ap->flags & G_GATTRFILL))
ap->fill = WCU->gattr.fill;
if ((ap->flags & G_GATTRSTYLE))
ap->style = WCU->gattr.style;
return 0;
}
int GCarrow (Gwidget_t *widget, Gpoint_t gp1, Gpoint_t gp2, Ggattr_t *ap) {
PIXpoint_t pp1, pp2, pa, pb, pd;
Grect_t gr;
double tangent, l;
if (gp1.x < gp2.x)
gr.o.x = gp1.x, gr.c.x = gp2.x;
else
gr.o.x = gp2.x, gr.c.x = gp1.x;
if (gp1.y < gp2.y)
gr.o.y = gp1.y, gr.c.y = gp2.y;
else
gr.o.y = gp2.y, gr.c.y = gp1.y;
if (!ISVISIBLE (gr))
return 1;
pp1 = pdrawtopix (widget, gp1), pp2 = pdrawtopix (widget, gp2);
pd.x = pp1.x - pp2.x, pd.y = pp1.y - pp2.y;
if (pd.x == 0 && pd.y == 0)
return 0;
tangent = atan2 ((double) pd.y, (double) pd.x);
if ((l = sqrt ((double) (pd.x * pd.x + pd.y * pd.y))) > 30)
l = 30;
pa.x = l * cos (tangent + M_PI / 7) + pp2.x;
pa.y = l * sin (tangent + M_PI / 7) + pp2.y;
pb.x = l * cos (tangent - M_PI / 7) + pp2.x;
pb.y = l * sin (tangent - M_PI / 7) + pp2.y;
setgattr (widget, ap);
XDrawLine (Gdisplay, WINDOW, GC, pp1.x, pp1.y, pp2.x, pp2.y);
XDrawLine (Gdisplay, WINDOW, GC, pa.x, pa.y, pp2.x, pp2.y);
XDrawLine (Gdisplay, WINDOW, GC, pb.x, pb.y, pp2.x, pp2.y);
return 0;
}
int GCline (Gwidget_t *widget, Gpoint_t gp1, Gpoint_t gp2, Ggattr_t *ap) {
PIXpoint_t pp1, pp2;
Grect_t gr;
if (gp1.x < gp2.x)
gr.o.x = gp1.x, gr.c.x = gp2.x;
else
gr.o.x = gp2.x, gr.c.x = gp1.x;
if (gp1.y < gp2.y)
gr.o.y = gp1.y, gr.c.y = gp2.y;
else
gr.o.y = gp2.y, gr.c.y = gp1.y;
if (!ISVISIBLE (gr))
return 1;
pp1 = pdrawtopix (widget, gp1), pp2 = pdrawtopix (widget, gp2);
setgattr (widget, ap);
XDrawLine (Gdisplay, WINDOW, GC, pp1.x, pp1.y, pp2.x, pp2.y);
return 0;
}
int GCbox (Gwidget_t *widget, Grect_t gr, Ggattr_t *ap) {
PIXrect_t pr;
Gxy_t p;
if (gr.o.x > gr.c.x)
p.x = gr.o.x, gr.o.x = gr.c.x, gr.c.x = p.x;
if (gr.o.y > gr.c.y)
p.y = gr.o.y, gr.o.y = gr.c.y, gr.c.y = p.y;
if (!ISVISIBLE (gr))
return 1;
pr = rdrawtopix (widget, gr);
setgattr (widget, ap);
if (WCU->gattr.fill)
XFillRectangle (Gdisplay, WINDOW, GC,
pr.o.x, pr.o.y, pr.c.x - pr.o.x, pr.c.y - pr.o.y);
else
XDrawRectangle (Gdisplay, WINDOW, GC,
pr.o.x, pr.o.y, pr.c.x - pr.o.x, pr.c.y - pr.o.y);
return 0;
}
int GCpolygon (Gwidget_t *widget, int gpn, Gpoint_t *gpp, Ggattr_t *ap) {
Grect_t gr;
int n, i;
if (gpn == 0)
return 0;
gr.o = gpp[0], gr.c = gpp[0];
for (i = 1; i < gpn; i++) {
gr.o.x = min (gr.o.x, gpp[i].x);
gr.o.y = min (gr.o.y, gpp[i].y);
gr.c.x = max (gr.c.x, gpp[i].x);
gr.c.y = max (gr.c.y, gpp[i].y);
}
if (!ISVISIBLE (gr))
return 1;
if (gpn + 1 > Gppn) {
n = (((gpn + 1) + PPINCR - 1) / PPINCR) * PPINCR;
Gppp = Marraygrow (Gppp, (long) n * PPSIZE);
Gppn = n;
}
for (i = 0; i < gpn; i++)
Gppp[i] = pdrawtopix (widget, gpp[i]);
setgattr (widget, ap);
if (WCU->gattr.fill) {
if (Gppp[gpn - 1].x != Gppp[0].x || Gppp[gpn - 1].y != Gppp[0].y)
Gppp[gpn] = Gppp[0], gpn++;
XFillPolygon (Gdisplay, WINDOW, GC, Gppp, gpn,
Complex, CoordModeOrigin);
} else
XDrawLines (Gdisplay, WINDOW, GC, Gppp, gpn, CoordModeOrigin);
return 0;
}
int GCsplinegon (Gwidget_t *widget, int gpn, Gpoint_t *gpp, Ggattr_t *ap) {
PIXpoint_t p0, p1, p2, p3;
Grect_t gr;
int n, i;
if (gpn == 0)
return 0;
gr.o = gpp[0], gr.c = gpp[0];
for (i = 1; i < gpn; i++) {
gr.o.x = min (gr.o.x, gpp[i].x);
gr.o.y = min (gr.o.y, gpp[i].y);
gr.c.x = max (gr.c.x, gpp[i].x);
gr.c.y = max (gr.c.y, gpp[i].y);
}
if (!ISVISIBLE (gr))
return 1;
Gppi = 1;
if (Gppi >= Gppn) {
n = (((Gppi + 1) + PPINCR - 1) / PPINCR) * PPINCR;
Gppp = Marraygrow (Gppp, (long) n * PPSIZE);
Gppn = n;
}
Gppp[0] = p3 = pdrawtopix (widget, gpp[0]);
for (i = 1; i < gpn; i += 3) {
p0 = p3;
p1 = pdrawtopix (widget, gpp[i]);
p2 = pdrawtopix (widget, gpp[i + 1]);
p3 = pdrawtopix (widget, gpp[i + 2]);
bezier (p0, p1, p2, p3);
}
setgattr (widget, ap);
if (WCU->gattr.fill) {
if (Gppp[Gppi - 1].x != Gppp[0].x || Gppp[Gppi - 1].y != Gppp[0].y)
Gppp[Gppi] = Gppp[0], Gppi++;
XFillPolygon (Gdisplay, WINDOW, GC, Gppp, Gppi,
Complex, CoordModeOrigin);
} else
XDrawLines (Gdisplay, WINDOW, GC, Gppp, Gppi, CoordModeOrigin);
return 0;
}
static void bezier (PIXpoint_t p0, PIXpoint_t p1,
PIXpoint_t p2, PIXpoint_t p3) {
Gpoint_t gp0, gp1, gp2;
Gsize_t s;
PIXpoint_t p;
double t;
int n, i, steps;
if ((s.x = p3.x - p0.x) < 0)
s.x = - s.x;
if ((s.y = p3.y - p0.y) < 0)
s.y = - s.y;
if (s.x > s.y)
steps = s.x / 5 + 1;
else
steps = s.y / 5 + 1;
for (i = 0; i <= steps; i++) {
t = i / (double) steps;
gp0.x = p0.x + t * (p1.x - p0.x);
gp0.y = p0.y + t * (p1.y - p0.y);
gp1.x = p1.x + t * (p2.x - p1.x);
gp1.y = p1.y + t * (p2.y - p1.y);
gp2.x = p2.x + t * (p3.x - p2.x);
gp2.y = p2.y + t * (p3.y - p2.y);
gp0.x = gp0.x + t * (gp1.x - gp0.x);
gp0.y = gp0.y + t * (gp1.y - gp0.y);
gp1.x = gp1.x + t * (gp2.x - gp1.x);
gp1.y = gp1.y + t * (gp2.y - gp1.y);
p.x = gp0.x + t * (gp1.x - gp0.x) + 0.5;
p.y = gp0.y + t * (gp1.y - gp0.y) + 0.5;
if (Gppi >= Gppn) {
n = (((Gppi + 1) + PPINCR - 1) / PPINCR) * PPINCR;
Gppp = Marraygrow (Gppp, (long) n * PPSIZE);
Gppn = n;
}
Gppp[Gppi++] = p;
}
}
int GCarc (Gwidget_t *widget, Gpoint_t gc, Gsize_t gs, double ang1,
double ang2, Ggattr_t *ap) {
PIXpoint_t pc;
PIXsize_t ps;
Grect_t gr;
gr.o.x = gc.x - gs.x, gr.o.y = gc.y - gs.y;
gr.c.x = gc.x + gs.x, gr.c.y = gc.y + gs.y;
if (!ISVISIBLE (gr))
return 1;
pc = pdrawtopix (widget, gc), ps = sdrawtopix (widget, gs);
setgattr (widget, ap);
if (WCU->gattr.fill)
XFillArc (Gdisplay, WINDOW, GC, pc.x - ps.x, pc.y - ps.y,
ps.x * 2, ps.y * 2, (int) (ang1 * 64), (int) (ang2 * 64));
else
XDrawArc (Gdisplay, WINDOW, GC, pc.x - ps.x, pc.y - ps.y,
ps.x * 2, ps.y * 2, (int) (ang1 * 64), (int) (ang2 * 64));
return 0;
}
int GCtext (Gwidget_t *widget, Gtextline_t *tlp, int n, Gpoint_t go,
char *fn, double fs, char *justs, Ggattr_t *ap) {
Gsize_t gs;
PIXpoint_t po;
PIXsize_t ps;
PIXrect_t pr;
Grect_t gr;
XFontStruct *font;
int dir, asc, des, x = 0, y, w, h, i;
XCharStruct txtinfo;
po = pdrawtopix (widget, go);
gs.x = 0, gs.y = fs;
ps = sdrawtopix (widget, gs);
if (!(font = findfont (fn, ps.y))) {
XDrawRectangle (Gdisplay, WINDOW, GC, po.x, po.y, 1, 1);
return 0;
}
setgattr (widget, ap);
SETFONT (font);
for (w = h = 0, i = 0; i < n; i++) {
if (IS8BIT (font))
XTextExtents (font, tlp[i].p, tlp[i].n, &dir, &asc, &des, &txtinfo);
else
XTextExtents16 (font, (XChar2b *) tlp[i].p, tlp[i].n / 2,
&dir, &asc, &des, &txtinfo);
tlp[i].w = txtinfo.width, tlp[i].h = asc + des;
w = max (w, txtinfo.width), h += asc + des;
}
switch (justs[0]) {
case 'l': po.x += w / 2; break;
case 'r': po.x -= w / 2; break;
}
switch (justs[1]) {
case 'd': po.y -= h; break;
case 'c': po.y -= h / 2; break;
}
pr.o.x = po.x - w / 2, pr.o.y = po.y;
pr.c.x = po.x + w / 2, pr.c.y = po.y + h;
gr = rpixtodraw (widget, pr);
if (!ISVISIBLE (gr))
return 1;
for (i = 0; i < n; i++) {
switch (tlp[i].j) {
case 'l': x = po.x - w / 2; break;
case 'n': x = po.x - tlp[i].w / 2; break;
case 'r': x = po.x - (tlp[i].w - w / 2); break;
}
y = po.y + (i + 1) * tlp[i].h - des;
if (IS8BIT (font))
XDrawString (Gdisplay, WINDOW, GC, x, y, tlp[i].p, tlp[i].n);
else
XDrawString16 (Gdisplay, WINDOW, GC, x, y,
(XChar2b *) tlp[i].p, tlp[i].n / 2);
}
return 0;
}
int GCgettextsize (Gwidget_t *widget, Gtextline_t *tlp, int n, char *fn,
double fs, Gsize_t *gsp) {
Gsize_t gs;
PIXsize_t ps;
XFontStruct *font;
int i, dir, asc, des;
XCharStruct txtinfo;
gs.x = 0, gs.y = fs;
ps = sdrawtopix (widget, gs);
if (!(font = findfont (fn, ps.y))) {
gsp->x = 1, gsp->y = 1;
return 0;
}
SETFONT (font);
for (ps.x = ps.y = 0, i = 0; i < n; i++) {
if (IS8BIT (font))
XTextExtents (font, tlp[i].p, tlp[i].n, &dir, &asc, &des, &txtinfo);
else
XTextExtents16 (font, (XChar2b *) tlp[i].p, tlp[i].n / 2,
&dir, &asc, &des, &txtinfo);
ps.x = max (ps.x, txtinfo.width), ps.y += asc + des;
}
*gsp = spixtodraw (widget, ps);
return 0;
}
static XFontStruct *findfont (char *name, int size) {
XFontStruct *font;
int fi, n, i;
if (name[0] == '\000')
return Gfontp[0].font;
sprintf (&Gbufp[0], name, size);
for (fi = 0; fi < Gfontn; fi++)
if (Strcmp (&Gbufp[0], Gfontp[fi].name) == 0)
return Gfontp[fi].font;
if (!(font = XLoadQueryFont (Gdisplay, &Gbufp[0]))) {
n = strlen (&Gbufp[0]) + 1;
for (i = 1; i < size; i++) {
sprintf (&Gbufp[n], name, size - i);
if ((font = XLoadQueryFont (Gdisplay, &Gbufp[n])))
break;
sprintf (&Gbufp[n], name, size + i);
if ((font = XLoadQueryFont (Gdisplay, &Gbufp[n])))
break;
}
}
if (!font)
font = Gfontp[0].font;
Gfontp = Marraygrow (Gfontp, (long) (Gfontn + 1) * FONTSIZE);
Gfontp[Gfontn].name = strdup (&Gbufp[0]);
Gfontp[Gfontn].font = font;
Gfontn++;
return font;
}
int GCcreatebitmap (Gwidget_t *widget, Gbitmap_t *bitmap, Gsize_t s) {
if (!widget) {
Gerr (POS, G_ERRNOPARENTWIDGET);
return -1;
}
if (!bitmap) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
if (!(bitmap->u.bmap.orig = XCreatePixmap (Gdisplay, XtWindow (widget->w),
(int) s.x, (int) s.y, Gdepth))) {
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
bitmap->u.bmap.scaled = 0;
bitmap->scale.x = bitmap->scale.y = 1;
bitmap->ctype = widget->type;
bitmap->canvas = widget - &Gwidgets[0];
bitmap->size = s;
return 0;
}
int GCdestroybitmap (Gbitmap_t *bitmap) {
if (!bitmap) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
XFreePixmap (Gdisplay, bitmap->u.bmap.orig);
if (bitmap->u.bmap.scaled)
XFreePixmap (Gdisplay, bitmap->u.bmap.scaled);
return 0;
}
#define COMPDIFF(a, b) (((a) > (b)) ? (a) - (b) : (b) - (a))
#define CDIFF(a, b) (COMPDIFF (a.red, b[0]) + COMPDIFF (a.green, b[1]) + \
COMPDIFF (a.blue, b[2]))
#define CMINMAXDIFF 20000
int GCreadbitmap (Gwidget_t *widget, Gbitmap_t *bitmap, FILE *fp) {
Gsize_t s;
XImage *img;
XColor colors[G_MAXCOLORS];
char bufp[2048];
int rgb[3];
char *s1, *s2;
char c;
int cmaxdiff, colori, colorn, bufn, bufi, step, x, y, k;
if (!widget) {
Gerr (POS, G_ERRNOPARENTWIDGET);
return -1;
}
if (!bitmap) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
step = 0;
while (step < 3) {
l1:
if (!fgets (bufp, 2048, fp)) {
Gerr (POS, G_ERRCANNOTREADBITMAP);
return -1;
}
s1 = &bufp[0];
l2:
for (; *s1 && isspace (*s1); s1++)
;
if (!*s1 || *s1 == '#')
goto l1;
switch (step) {
case 0:
if (strncmp (s1, "P6", 2) != 0) {
Gerr (POS, G_ERRCANNOTREADBITMAP);
return -1;
}
step++, s1 += 2;
goto l2;
case 1:
for (s2 = s1; *s2 && *s2 >= '0' && *s2 <= '9'; s2++)
;
c = *s2, *s2 = 0;
if (s2 == s1 || (s.x = atoi (s1)) <= 0) {
*s2 = c, Gerr (POS, G_ERRCANNOTREADBITMAP);
return -1;
}
*s2 = c, step++, s1 = s2;
goto l2;
case 2:
for (s2 = s1; *s2 && *s2 >= '0' && *s2 <= '9'; s2++)
;
c = *s2, *s2 = 0;
if (s2 == s1 || (s.y = atoi (s1)) <= 0) {
*s2 = c, Gerr (POS, G_ERRCANNOTREADBITMAP);
return -1;
}
*s2 = c, step++, s1 = s2;
goto l2;
}
}
if (!(bitmap->u.bmap.orig = XCreatePixmap (Gdisplay, XtWindow (widget->w),
(int) s.x, (int) s.y, Gdepth))) {
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
bitmap->u.bmap.scaled = 0;
bitmap->scale.x = bitmap->scale.y = 1;
bitmap->ctype = widget->type;
bitmap->canvas = widget - &Gwidgets[0];
bitmap->size = s;
if ((img = XCreateImage (Gdisplay, DefaultVisual (Gdisplay, Gscreenn),
Gdepth, ZPixmap, 0, NULL, (int) s.x, (int) s.y, 32, 0)) == NULL) {
XFreePixmap (Gdisplay, bitmap->u.bmap.orig);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
if ((img->data = malloc (img->bytes_per_line * img->height)) == NULL) {
XFreePixmap (Gdisplay, bitmap->u.bmap.orig);
XDestroyImage (img);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
colorn = 0;
for (colori = 0; colori < G_MAXCOLORS; colori++) {
if (widget->u.c->colors[colori].inuse) {
colors[colorn] = widget->u.c->colors[colori].color;
colorn++;
}
}
bufi = bufn = 0;
bufp[bufi] = 0;
for (y = 0; y < s.y; y++) {
for (x = 0; x < s.x; x++) {
for (k = 0; k < 3; k++) {
if (bufi == bufn) {
if ((bufn = fread (bufp, 1, 2047, fp)) == 0) {
XFreePixmap (Gdisplay, bitmap->u.bmap.orig);
XDestroyImage (img);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
bufi = 0;
}
rgb[k] = 257 * (unsigned char) bufp[bufi++];
}
cmaxdiff = CMINMAXDIFF;
l3:
for (colori = 0; colori < colorn; colori++)
if (CDIFF (colors[colori], rgb) < cmaxdiff)
break;
if (colori == colorn && colorn < G_MAXCOLORS &&
cmaxdiff == CMINMAXDIFF) {
colors[colorn].red = rgb[0];
colors[colorn].green = rgb[1];
colors[colorn].blue = rgb[2];
if (XAllocColor (Gdisplay, widget->u.c->cmap, &colors[colorn]))
colorn++;
}
if (colori == colorn) {
cmaxdiff *= 10;
goto l3;
}
XPutPixel (img, x, y, colors[colori].pixel);
}
}
for (colori = 0; colori < G_MAXCOLORS && colori < colorn; colori++) {
if (!widget->u.c->colors[colori].inuse) {
widget->u.c->colors[colori].color = colors[colori];
widget->u.c->colors[colori].inuse = TRUE;
}
}
XPutImage (Gdisplay, bitmap->u.bmap.orig, widget->u.c->gc, img,
0, 0, 0, 0, (int) s.x, (int) s.y);
XDestroyImage (img);
return 0;
}
int GCwritebitmap (Gbitmap_t *bitmap, FILE *fp) {
Gwidget_t *widget;
XImage *img;
XColor colors[G_MAXCOLORS];
char bufp[2048];
int colori, bufi, x, y, w, h;
if (!bitmap) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
if (bitmap->canvas < 0 || bitmap->canvas >= Gwidgetn ||
!Gwidgets[bitmap->canvas].inuse) {
Gerr (POS, G_ERRBADWIDGETID, bitmap->canvas);
return -1;
}
widget = &Gwidgets[bitmap->canvas];
if (widget->type != G_CANVASWIDGET && widget->type != G_PCANVASWIDGET) {
Gerr (POS, G_ERRNOTACANVAS, bitmap->canvas);
return -1;
}
for (colori = 0; colori < G_MAXCOLORS; colori++)
colors[colori].pixel = colori;
XQueryColors (Gdisplay, widget->u.c->cmap, &colors[0], G_MAXCOLORS);
if (!(img = XGetImage (Gdisplay, bitmap->u.bmap.orig, 0, 0,
bitmap->size.x, bitmap->size.y, AllPlanes, ZPixmap))) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
fprintf (fp, "P6\n%d %d 255\n", (int) bitmap->size.x, (int) bitmap->size.y);
bufi = 0;
w = bitmap->size.x;
h = bitmap->size.y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
colori = XGetPixel (img, x, y);
bufp[bufi++] = colors[colori].red / 257;
bufp[bufi++] = colors[colori].green / 257;
bufp[bufi++] = colors[colori].blue / 257;
if (bufi + 3 >= 2048) {
fwrite (bufp, 1, bufi, fp);
bufi = 0;
}
}
}
if (bufi > 0)
fwrite (bufp, 1, bufi, fp);
XDestroyImage (img);
return 0;
}
int GCbitblt (Gwidget_t *widget, Gpoint_t gp, Grect_t gr, Gbitmap_t *bitmap,
char *mode, Ggattr_t *ap) {
PIXrect_t pr;
PIXpoint_t pp;
Gsize_t scale;
Gxy_t p;
Pixmap pix;
double tvx, tvy, twx, twy;
if (gr.o.x > gr.c.x)
p.x = gr.o.x, gr.o.x = gr.c.x, gr.c.x = p.x;
if (gr.o.y > gr.c.y)
p.y = gr.o.y, gr.o.y = gr.c.y, gr.c.y = p.y;
if (strcmp (mode, "b2c") == 0) {
if (!ISVISIBLE (gr))
return 1;
tvx = WCU->vsize.x, tvy = WCU->vsize.y;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
scale.x = tvx / twx, scale.y = tvy / twy;
if (scale.x >= 1.0 - 1E-4 && scale.x <= 1.0 + 1E-4 &&
scale.y >= 1.0 - 1E-4 && scale.y <= 1.0 + 1E-4) {
pix = bitmap->u.bmap.orig;
bitmap->scale = scale;
} else {
if (scale.x != bitmap->scale.x || scale.y != bitmap->scale.y)
scalebitmap (widget, bitmap, scale, TRUE, 1);
pix = bitmap->u.bmap.scaled;
}
pr = rdrawtopix (widget, gr);
pp = pdrawtobpix (bitmap, gp);
setgattr (widget, ap);
XCopyArea (Gdisplay, pix, WINDOW, GC, pp.x, pp.y - pr.c.y + pr.o.y,
pr.c.x - pr.o.x + 1, pr.c.y - pr.o.y + 1, pr.o.x, pr.o.y);
} else if (strcmp (mode, "c2b") == 0) {
tvx = WCU->vsize.x, tvy = WCU->vsize.y;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
scale.x = tvx / twx, scale.y = tvy / twy;
if (scale.x >= 1.0 - 1E-4 && scale.x <= 1.0 + 1E-4 &&
scale.y >= 1.0 - 1E-4 && scale.y <= 1.0 + 1E-4) {
pix = bitmap->u.bmap.orig;
bitmap->scale = scale;
} else {
if (scale.x != bitmap->scale.x || scale.y != bitmap->scale.y)
scalebitmap (widget, bitmap, scale, FALSE, 1);
pix = bitmap->u.bmap.scaled;
}
pr = rdrawtobpix (bitmap, gr);
pp = pdrawtopix (widget, gp);
setgattr (widget, ap);
XCopyArea (Gdisplay, WINDOW, pix, GC, pp.x, pp.y - pr.c.y + pr.o.y,
pr.c.x - pr.o.x + 1, pr.c.y - pr.o.y + 1, pr.o.x, pr.o.y);
if (pix != bitmap->u.bmap.orig)
scalebitmap (widget, bitmap, scale, TRUE, -1);
}
return 0;
}
static int scalebitmap (Gwidget_t *widget, Gbitmap_t *bitmap, Gsize_t scale,
int copybits, int dir) {
Gsize_t nsize, o2n;
Pixmap spix;
XImage *oimg, *simg;
XColor colors[G_MAXCOLORS];
int cmaxdiff, colorn, colori, x, y, x2, y2 = 0, xp, yp;
double prod, rgb[3], xr2, yr2 = 0, xl2, yl2 = 0, xf2, yf2, xr, yr, xl, yl;
if (!copybits) {
if (dir == 1) {
nsize.x = (int) (bitmap->size.x * scale.x);
nsize.y = (int) (bitmap->size.y * scale.y);
if (!(spix = XCreatePixmap (Gdisplay, XtWindow (widget->w),
(int) nsize.x, (int) nsize.y, Gdepth))) {
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
if (bitmap->u.bmap.scaled)
XFreePixmap (Gdisplay, bitmap->u.bmap.scaled);
bitmap->u.bmap.scaled = spix;
bitmap->scale = scale;
}
return 0;
}
for (colori = 0; colori < G_MAXCOLORS; colori++)
colors[colori].pixel = colori;
colorn = G_MAXCOLORS;
XQueryColors (Gdisplay, widget->u.c->cmap, &colors[0], G_MAXCOLORS);
if (dir == 1) {
nsize.x = (int) (bitmap->size.x * scale.x);
nsize.y = (int) (bitmap->size.y * scale.y);
o2n.x = 1 / scale.x, o2n.y = 1 / scale.y;
if (!(oimg = XGetImage (Gdisplay, bitmap->u.bmap.orig, 0, 0,
(int) bitmap->size.x, (int) bitmap->size.y, AllPlanes,
ZPixmap))) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
if (!(spix = XCreatePixmap (Gdisplay, XtWindow (widget->w),
(int) nsize.x, (int) nsize.y, Gdepth))) {
XDestroyImage (oimg);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
} else {
nsize.x = (int) bitmap->size.x;
nsize.y = (int) bitmap->size.y;
o2n.x = scale.x, o2n.y = scale.y;
if (!(oimg = XGetImage (Gdisplay, bitmap->u.bmap.scaled, 0, 0,
(int) (bitmap->size.x * scale.x), (int) (bitmap->size.y *
scale.y), AllPlanes, ZPixmap))) {
Gerr (POS, G_ERRNOBITMAP);
return -1;
}
spix = bitmap->u.bmap.orig;
}
prod = o2n.x * o2n.y;
if (!(simg = XCreateImage (Gdisplay, DefaultVisual (Gdisplay, Gscreenn),
Gdepth, ZPixmap, 0, NULL, (int) nsize.x, (int) nsize.y, 32, 0))) {
XFreePixmap (Gdisplay, spix);
XDestroyImage (oimg);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
if ((simg->data = malloc (simg->bytes_per_line * simg->height)) == NULL) {
XFreePixmap (Gdisplay, spix);
XDestroyImage (oimg);
XDestroyImage (simg);
Gerr (POS, G_ERRCANNOTCREATEBITMAP);
return -1;
}
y = 0;
yr = o2n.y;
yl = 0;
for (yp = 0; yp < nsize.y; yp++) {
x = 0;
xr = o2n.x;
xl = 0;
for (xp = 0; xp < nsize.x; xp++) {
y2 = y;
yr2 = yr;
yl2 = yl;
rgb[0] = rgb[1] = rgb[2] = 0;
do {
x2 = x;
xr2 = xr;
xl2 = xl;
yf2 = (yl2 + yr2 > 1) ? 1 - yl2 : yr2, yr2 -= yf2;
do {
xf2 = (xl2 + xr2 > 1) ? 1 - xl2 : xr2, xr2 -= xf2;
colori = XGetPixel (oimg, x2, y2);
rgb[0] += (colors[colori].red * xf2 * yf2 / prod);
rgb[1] += (colors[colori].green * xf2 * yf2 / prod);
rgb[2] += (colors[colori].blue * xf2 * yf2 / prod);
xl2 += xf2;
if (xl2 >= 1)
x2++, xl2 -= 1;
} while (xr2 > 0);
xr2 = o2n.x;
yl2 += yf2;
if (yl2 >= 1)
y2++, yl2 -= 1;
} while (yr2 > 0);
yr2 = o2n.y;
cmaxdiff = CMINMAXDIFF;
l4:
for (colori = 0; colori < colorn; colori++)
if (CDIFF (colors[colori], rgb) < cmaxdiff)
break;
if (colori == colorn) {
cmaxdiff *= 10;
goto l4;
}
XPutPixel (simg, xp, yp, colors[colori].pixel);
x = x2;
xr = xr2;
xl = xl2;
}
y = y2;
yr = yr2;
yl = yl2;
}
XPutImage (Gdisplay, spix, widget->u.c->gc, simg, 0, 0, 0, 0,
(int) nsize.x, (int) nsize.y);
XDestroyImage (simg);
XDestroyImage (oimg);
if (dir == 1) {
if (bitmap->u.bmap.scaled)
XFreePixmap (Gdisplay, bitmap->u.bmap.scaled);
bitmap->u.bmap.scaled = spix;
bitmap->scale = scale;
}
return 0;
}
int GCgetmousecoords (Gwidget_t *widget, Gpoint_t *gpp, int *count) {
PIXpoint_t pp;
Window rwin, cwin;
int rx, ry, x, y;
unsigned int mask;
XQueryPointer (Gdisplay, WINDOW, &rwin, &cwin, &rx, &ry, &x, &y, &mask);
pp.x = x, pp.y = y;
*gpp = Gppixtodraw (widget, pp);
*count = ((mask & Button1Mask) ? 1 : 0) + ((mask & Button2Mask) ? 1 : 0) +
((mask & Button3Mask) ? 1 : 0);
return 0;
}
void Gcwbutaction (Widget w, XEvent *evp, char **app, unsigned int *anp) {
Gwidget_t *widget;
Gevent_t gev;
PIXpoint_t pp;
int wi, xtype, bn;
widget = findwidget ((unsigned long) w, G_CANVASWIDGET);
switch ((xtype = evp->type)) {
case ButtonPress:
case ButtonRelease:
gev.type = G_MOUSE;
gev.code = (xtype == ButtonPress) ? G_DOWN : G_UP;
gev.data = evp->xbutton.button - Button1;
pp.x = evp->xbutton.x, pp.y = evp->xbutton.y;
gev.p = Gppixtodraw (widget, pp);
bn = WCU->bstate[gev.data];
WCU->bstate[gev.data] = (xtype == ButtonPress) ? 1 : 0;
bn = WCU->bstate[gev.data] - bn;
WCU->buttonsdown += bn;
Gbuttonsdown += bn;
break;
default:
return;
}
wi = gev.wi = widget - &Gwidgets[0];
Gpopdownflag = FALSE;
if (WCU->func)
(*WCU->func) (&gev);
if (Gpopdownflag) {
Gpopdownflag = FALSE;
if (gev.code == G_DOWN) {
gev.code = G_UP;
widget = &Gwidgets[wi];
WCU->bstate[gev.data] = 0;
WCU->buttonsdown--;
Gbuttonsdown--;
if (widget->inuse && WCU->func)
(*WCU->func) (&gev);
}
}
}
void Gcwkeyaction (Widget w, XEvent *evp, char **app, unsigned int *anp) {
Gwidget_t *widget;
Gevent_t gev;
PIXpoint_t pp;
Window rwin, cwin;
int xtype, rx, ry, x, y;
unsigned int mask;
char c;
widget = findwidget ((unsigned long) w, G_CANVASWIDGET);
switch ((xtype = evp->type)) {
case KeyPress:
case KeyRelease:
if (!XLookupString ((XKeyEvent *) evp, &c, 1, NULL, NULL))
return;
XQueryPointer (Gdisplay, WCU->window, &rwin, &cwin,
&rx, &ry, &x, &y, &mask);
gev.type = G_KEYBD;
gev.code = (xtype == KeyPress) ? G_DOWN : G_UP;
gev.data = c;
pp.x = x, pp.y = y;
gev.p = Gppixtodraw (widget, pp);
break;
default:
return;
}
gev.wi = widget - &Gwidgets[0];
Gpopdownflag = FALSE;
if (WCU->func)
(*WCU->func) (&gev);
if (Gpopdownflag)
Gpopdownflag = FALSE;
}
static void setgattr (Gwidget_t *widget, Ggattr_t *ap) {
XGCValues gcv;
XColor *cp;
int color, width, mode, style, pati;
double intens;
if (!(ap->flags & G_GATTRCOLOR))
ap->color = WCU->defgattr.color;
if (!(ap->flags & G_GATTRWIDTH))
ap->width = WCU->defgattr.width;
if (!(ap->flags & G_GATTRMODE))
ap->mode = WCU->defgattr.mode;
if (!(ap->flags & G_GATTRFILL))
ap->fill = WCU->defgattr.fill;
if (!(ap->flags & G_GATTRSTYLE))
ap->style = WCU->defgattr.style;
color = ap->color;
if (color >= G_MAXCOLORS || !(WCU->colors[color].inuse))
color = 1;
if (color != WCU->gattr.color) {
WCU->gattr.color = color;
if (ap->mode == G_XOR)
XSetForeground (Gdisplay, GC,
WCU->colors[WCU->gattr.color].color.pixel ^
WCU->colors[0].color.pixel);
else
XSetForeground (Gdisplay, GC,
WCU->colors[WCU->gattr.color].color.pixel);
if (Gdepth == 1) {
cp = &WCU->colors[color].color;
intens = (0.3 * cp->blue + 0.59 * cp->red +
0.11 * cp->green) / 65535.0;
pati = (intens <= 0.0625) ? 16 :
-16.0 * (log (intens) / 2.7725887222);
XSetTile (Gdisplay, GC, WCU->grays[pati]);
}
}
mode = ap->mode;
if (mode != WCU->gattr.mode) {
WCU->gattr.mode = mode;
XSetFunction (Gdisplay, GC, WCU->gattr.mode);
if (mode == G_XOR)
XSetForeground (Gdisplay, GC,
WCU->colors[WCU->gattr.color].color.pixel ^
WCU->colors[0].color.pixel);
else
XSetForeground (Gdisplay, GC,
WCU->colors[WCU->gattr.color].color.pixel);
}
width = ap->width;
if (width != WCU->gattr.width) {
gcv.line_width = WCU->gattr.width = width;
XChangeGC (Gdisplay, GC, GCLineWidth, &gcv);
}
WCU->gattr.fill = ap->fill;
style = ap->style;
if (style != WCU->gattr.style) {
WCU->gattr.style = style;
if (style == G_SOLID) {
gcv.line_style = LineSolid;
XChangeGC (Gdisplay, GC, GCLineStyle, &gcv);
} else {
XSetDashes (Gdisplay, GC, 0, gstyles[style], 2);
gcv.line_style = LineOnOffDash;
XChangeGC (Gdisplay, GC, GCLineStyle, &gcv);
}
}
}
static PIXrect_t rdrawtopix (Gwidget_t *widget, Grect_t gr) {
PIXrect_t pr;
double tvx, tvy, twx, twy;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
pr.o.x = tvx * (gr.o.x - WCU->wrect.o.x) / twx + 0.5;
pr.o.y = tvy * (1.0 - (gr.c.y - WCU->wrect.o.y) / twy) + 0.5;
pr.c.x = tvx * (gr.c.x - WCU->wrect.o.x) / twx + 0.5;
pr.c.y = tvy * (1.0 - (gr.o.y - WCU->wrect.o.y) / twy) + 0.5;
return pr;
}
static PIXpoint_t pdrawtopix (Gwidget_t *widget, Gpoint_t gp) {
PIXpoint_t pp;
double tvx, tvy, twx, twy;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
pp.x = tvx * (gp.x - WCU->wrect.o.x) / twx + 0.5;
pp.y = tvy * (1.0 - (gp.y - WCU->wrect.o.y) / twy) + 0.5;
return pp;
}
static PIXsize_t sdrawtopix (Gwidget_t *widget, Gsize_t gs) {
PIXsize_t ps;
double tvx, tvy, twx, twy;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
ps.x = tvx * (gs.x - 1) / twx + 1.5;
ps.y = tvy * (gs.y - 1) / twy + 1.5;
return ps;
}
static Gpoint_t Gppixtodraw (Gwidget_t *widget, PIXpoint_t pp) {
Gpoint_t gp;
double tvx, tvy, twx, twy;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
gp.x = (pp.x / tvx) * twx + WCU->wrect.o.x;
gp.y = (1.0 - pp.y / tvy) * twy + WCU->wrect.o.y;
return gp;
}
static Gsize_t spixtodraw (Gwidget_t *widget, PIXsize_t ps) {
Gsize_t gs;
double tvx, tvy, twx, twy;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
gs.x = ((ps.x - 1) / tvx) * twx + 1;
gs.y = ((ps.y - 1) / tvy) * twy + 1;
return gs;
}
static Grect_t rpixtodraw (Gwidget_t *widget, PIXrect_t pr) {
Grect_t gr;
double tvx, tvy, twx, twy, n;
tvx = WCU->vsize.x - 1, tvy = WCU->vsize.y - 1;
twx = WCU->wrect.c.x - WCU->wrect.o.x;
twy = WCU->wrect.c.y - WCU->wrect.o.y;
gr.o.x = (pr.o.x / tvx) * twx + WCU->wrect.o.x;
gr.o.y = (1.0 - pr.c.y / tvy) * twy + WCU->wrect.o.y;
gr.c.x = (pr.c.x / tvx) * twx + WCU->wrect.o.x;
gr.c.y = (1.0 - pr.o.y / tvy) * twy + WCU->wrect.o.y;
if (gr.o.x > gr.c.x)
n = gr.o.x, gr.o.x = gr.c.x, gr.c.x = n;
if (gr.o.y > gr.c.y)
n = gr.o.y, gr.o.y = gr.c.y, gr.c.y = n;
return gr;
}
static PIXrect_t rdrawtobpix (Gbitmap_t *bitmap, Grect_t gr) {
PIXrect_t pr;
double tvy;
tvy = (bitmap->size.y - 1) * bitmap->scale.y;
pr.o.x = gr.o.x + 0.5;
pr.o.y = tvy - gr.c.y + 0.5;
pr.c.x = gr.c.x + 0.5;
pr.c.y = tvy - gr.o.y + 0.5;
return pr;
}
static PIXpoint_t pdrawtobpix (Gbitmap_t *bitmap, Gpoint_t gp) {
PIXpoint_t pp;
double tvy;
tvy = (bitmap->size.y - 1) * bitmap->scale.y;
pp.x = gp.x + 0.5;
pp.y = tvy - gp.y + 0.5;
return pp;
}
static void adjustclip (Gwidget_t *widget) {
Gwidget_t *parent;
Dimension width, height, pwidth, pheight;
Position x, y;
PIXrect_t pr;
parent = &Gwidgets[widget->pwi];
RESETARGS;
ADD2ARGS (XtNx, &x);
ADD2ARGS (XtNy, &y);
ADD2ARGS (XtNwidth, &width);
ADD2ARGS (XtNheight, &height);
XtGetValues (widget->w, argp, argn);
RESETARGS;
ADD2ARGS (XtNwidth, &pwidth);
ADD2ARGS (XtNheight, &pheight);
XtGetValues (parent->w, argp, argn);
pr.o.x = max (0, -x);
pr.o.y = max (0, -y);
pr.c.x = min (width, pr.o.x + pwidth);
pr.c.y = min (height, pr.o.y + pheight);
pr.c.x = max (pr.o.x, pr.c.x);
pr.c.y = max (pr.o.y, pr.c.y);
WCU->clip = rpixtodraw (widget, pr);
#ifdef FEATURE_GMAP
if (WCU->gmapmode) {
GMAPwinsetsize (XtWindow (widget->w), width, height);
GMAPchansetaspect (XtWindow (widget->w), width, height);
}
#endif
}
static Bool cwepredicate (Display *display, XEvent *evp, XPointer data) {
if (evp->type == Expose && ((XAnyEvent *) evp)->window == (Window) data)
return True;
return False;
}
static void cweventhandler (Widget w, XtPointer data, XEvent *evp,
Boolean *cont) {
Gwidget_t *widget;
widget = findwidget ((unsigned long) w, G_CANVASWIDGET);
Gneedredraw = WCU->needredraw = TRUE;
adjustclip (widget);
#ifdef FEATURE_GMAP
if (WCU->gmapmode)
GMAPneedupdate = TRUE;
#endif
}
static Bool cwvpredicate (Display *display, XEvent *evp, XPointer data) {
if (evp->type == VisibilityNotify &&
((XAnyEvent *) evp)->window == (Window) data)
return True;
return False;
}