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xwin.c
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#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include "eventnames.h"
#include <errno.h>
#include <math.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/unistd.h>
#include <sys/wait.h>
#include <readline/readline.h>
#include <readline/history.h>
#include "db.h"
#include "xwin.h"
#include "token.h"
#include "eprintf.h"
#include "rubber.h"
#include "readmenu.h"
#include "path.h"
#include "ev.h"
#define UNUSED(x) (void)(x)
extern void do_win();
void xwin_window_parms_only();
#define MAX_MENU 256
void load_font();
int init_colors();
void xwin_doXevent();
void getGC();
int draw_grid();
void paint_pane();
int dump_window();
int xwin_display_state();
extern Pixmap stipple[];
/* globals for interacting with db.c */
DB_TAB *currep = NULL; /* keep track of current rep */
extern XFORM unity_transform;
/*XFORM screen_transform; */
/*XFORM *xp = &screen_transform; */
int quit_now; /* when != 0 , means the user is done using this program. */
char version[] = "$Id: xwin.c,v 1.48 2008/08/25 16:26:45 walker Exp walker $";
unsigned int top_width, top_height; /* main window pixel size */
unsigned int g_width, g_height; /* graphic window pixel size */
unsigned int menu_width; /* menu window pixel size */
unsigned int dpy_width, dpy_height; /* display pixel size */
double vp_xmin, vp_ymin, vp_xmax, vp_ymax;
double scale = 1.0; /* xform factors from real->viewport */
double xoffset = 0.0;
double yoffset = 0.0;
/* these grid variable are only used during MAIN opening screen */
/* otherwise currep is the place for the current grid */
double grid_xd = 10.0; /* grid delta */
double grid_yd = 10.0;
double grid_xs = 2.0; /* how often to display grid ticks */
double grid_ys = 2.0;
double grid_xo = 0.0; /* starting offset */
double grid_yo = 0.0;
GRIDSTATE grid_state = G_ON; /* ON, OFF */
DISPLAYSTATE display_state = D_ON; /* ON, OFF */
int grid_color = 1; /* 1 through 6 for different colors */
int grid_notified = 0;
int need_redraw=0;
static double x,y;
static int xa,ya; /* remember raw button coords */
static int xb,yb; /* remember raw button coords */
static int xr,yr; /* remember raw button coords */
static int moved=0;
#define icon_bitmap_width 20
#define icon_bitmap_height 20
static unsigned char icon_bitmap_bits[] = {
0x60, 0x00, 0x01, 0xb0, 0x00, 0x07, 0x0c, 0x03, 0x00, 0x04, 0x04, 0x00,
0xc2, 0x18, 0x00, 0x03, 0x30, 0x00, 0x01, 0x60, 0x00, 0xf1, 0xdf, 0x00,
0xc1, 0xf0, 0x01, 0x82, 0x01, 0x00, 0x02, 0x03, 0x00, 0x02, 0x0c, 0x00,
0x02, 0x38, 0x00, 0x04, 0x60, 0x00, 0x04, 0xe0, 0x00, 0x04, 0x38, 0x00,
0x84, 0x06, 0x00, 0x14, 0x14, 0x00, 0x9c, 0x34, 0x00, 0x00, 0x00, 0x00};
#define BITMAPDEPTH 1
#define TOO_SMALL 0
#define BIG_ENOUGH 1
/* for select in XEvent loop */
#ifndef FD_SET
#define FD_SET(n, p) ((p)->fds_bits[0] |= (1 << ((n) % 32)))
#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1 << ((n) % 32)))
#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1 << ((n) % 32)))
#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
#endif /* !FD_SET */
extern char *getwd();
Display *dpy; int scr;
extern int errno;
#define BUF_SIZE 128
Window topwin;
Window win;
Window menuwin;
GC gca, gcb;
GC gcx, gcg;
/* Menu definitions */
#define NONE 100
#define BLACK 1
#define WHITE 0
Window inverted_pane = NONE;
int num_menus;
MENUENTRY menutab[MAX_MENU];
XFontStruct *font_info;
#define MAX_COLORS 10
unsigned long colors[MAX_COLORS]; /* will hold pixel values for colors */
#define MAX_LINETYPE 7
int initX()
{
int x,y;
unsigned int border_width = 4;
extern unsigned int dpy_width, dpy_height;
char *window_name = "PD_Piglet: Personal Interactive Graphic Layout EdiTor";
char *icon_name = "piglet";
Pixmap icon_pixmap;
XSizeHints *size_hints;
XIconSize *size_list;
XWMHints *wm_hints;
XClassHint *class_hints;
XTextProperty windowName, iconName;
XSetWindowAttributes attr;
int icount;
char *dpy_name = NULL;
int debug=0;
/* menu stuff */
char *string;
int char_count;
int direction, ascent, descent;
int pane_height;
int menu_height;
XCharStruct overall;
int winindex;
int linewidth;
int numrows;
char buf[128];
char *geometry;
int flags;
if (!(size_hints = XAllocSizeHints())) {
eprintf("failure allocating SizeHints memory");
}
if (!(wm_hints = XAllocWMHints())) {
eprintf("failure allocating WMHints memory");
exit (0);
}
if (!(class_hints = XAllocClassHint())) {
eprintf("failure allocating ClassHint memory");
}
/* Connect to X server */
if ( (dpy=XOpenDisplay(dpy_name)) == NULL ) {
eprintf("cannot connect to X server %s",XDisplayName(dpy_name) );
}
/* Get screen size from display structure macro */
scr = DefaultScreen(dpy);
dpy_width = DisplayWidth(dpy, scr);
dpy_height = DisplayHeight(dpy, scr);
// set x,y and size by $PIG_GEOMETRY and --geometry flag
/* suggest that window be placed in upper left corner */
x=y= 2 * (int) border_width;
// 0.75x0.75 sets size as a fraction of dpy size
top_width = 3*dpy_width/4, top_height = 3*dpy_height/4;
geometry = EVget("PIG_GEOMETRY");
if (debug) printf("geometry is %s\n", geometry);
flags=XParseGeometry(geometry, &x, &y, &top_width, &top_height);
if (debug) printf("geom: %s x,y,xw,yw = %d %d %d %d\n", geometry, x, y, top_width, top_height);
/* figure out menu sizes */
string = "X";
char_count = strlen(string);
load_font(&font_info);
findfile(PIG_PATH, EVget("PIG_MENUDATA_FILE"), buf, R_OK);
if (buf[0] == '\0') {
printf("Could not find MENUDATA file: %s\n", EVget("PIG_MENUDATA_FILE"));
printf("PIG_PATH=\"%s\"\n", PIG_PATH);
exit(5);
} else {
printf("loading %s\n", buf);
num_menus=loadmenu(menutab, MAX_MENU, buf, &linewidth, &numrows);
}
/* Determine the extent of each menu pane based on font size */
XTextExtents(font_info, string, char_count, &direction, &ascent,
&descent, &overall);
menu_width = overall.width*linewidth + 6;
pane_height = overall.ascent + overall.descent + 6;
menu_height = pane_height * numrows;
if (top_width < menu_width*2) {
top_width = menu_width*2;
}
if ((menu_height > 0) && (top_height < (unsigned int)menu_height)) {
top_height = menu_height;
}
if (flags & XNegative) {
// origin w.r.t right hand side
x = dpy_width-top_width+x;
}
if (flags & YNegative) {
// origin w.r.t bottom of display
y = dpy_height-top_height+y;
}
// Visual *visual = DefaultVisual(dpy,0);
// if (visual->class != TrueColor) {
// fprintf(stderr,"cannot handle non TrueColor visual\n");
// }
/* create top level window for packing graphic and menu windows */
topwin = XCreateSimpleWindow(dpy, RootWindow(dpy,scr),
x, y, top_width, top_height, border_width,
WhitePixel(dpy,scr), BlackPixel(dpy,scr));
x=y=0;
border_width=1;
g_width=top_width-menu_width;
g_height=top_height;
/* Create opaque window for graphics */
win = XCreateSimpleWindow(dpy, topwin,
x, y, g_width, g_height, border_width,
WhitePixel(dpy,scr), BlackPixel(dpy,scr));
/* Create opaque window for menu */
menuwin = XCreateSimpleWindow(dpy, topwin,
(g_width)+1, (int) y, menu_width-2, g_height,
border_width, WhitePixel(dpy,scr), BlackPixel(dpy,scr));
/* Create the menu boxes */
for (winindex = 1; winindex <= num_menus; winindex++) {
menutab[winindex].pane = XCreateSimpleWindow(dpy, menuwin,
overall.width*menutab[winindex].xloc, /*x*/
pane_height*menutab[winindex].yloc, /*y*/
overall.width*menutab[winindex].width, /*width*/
pane_height, /*height*/
border_width = 1,
WhitePixel(dpy,scr),
BlackPixel(dpy,scr));
XSelectInput(dpy, menutab[winindex].pane, ButtonPressMask |
ButtonReleaseMask | ExposureMask);
}
XMapSubwindows(dpy, menuwin);
/* Get available icon sizes from window manager */
if (XGetIconSizes(dpy, RootWindow(dpy, scr), &size_list, &icount) == 0) {
if (debug) weprintf("WM didn't set icon sizes - using default.");
} else {
/* should eventually create a pixmap here */
;
}
/* Create pixmap of depth 1 (bitmap) for icon */
icon_pixmap = XCreateBitmapFromData(dpy, win,
(const char *)icon_bitmap_bits, icon_bitmap_width, icon_bitmap_height);
size_hints->flags = PPosition | PSize | PMinSize;
size_hints->min_width = 300;
size_hints->min_height = 200;
if (XStringListToTextProperty(&window_name, 1, &windowName) == 0) {
eprintf("structure allocation for windowName failed.");
}
if (XStringListToTextProperty(&icon_name, 1, &iconName) == 0) {
eprintf("structure allocation for iconName failed.");
}
wm_hints->initial_state = NormalState;
wm_hints->input = True;
wm_hints->icon_pixmap = icon_pixmap;
wm_hints->flags = StateHint | IconPixmapHint | InputHint;
class_hints->res_name = estrdup(progname());
class_hints->res_class = class_hints->res_name;
XSetWMProperties(dpy, topwin, &windowName, &iconName,
(char **) NULL, (long int) NULL, size_hints, wm_hints, class_hints);
XFree(windowName.value);
XFree(iconName.value);
XFree(size_hints);
XFree(wm_hints);
free(class_hints->res_name);
XFree(class_hints);
/* Select event types wanted */
XSelectInput(dpy, topwin, ExposureMask | KeyPressMask |
ButtonPressMask | ButtonReleaseMask | StructureNotifyMask |
Button1MotionMask | PointerMotionMask );
XSelectInput(dpy, win, ExposureMask | KeyPressMask |
ButtonPressMask | ButtonReleaseMask |
Button1MotionMask | PointerMotionMask );
XSelectInput(dpy, menuwin, ExposureMask | KeyPressMask |
ButtonPressMask | ButtonReleaseMask |
Button1MotionMask | PointerMotionMask );
init_colors();
/* Create GC for text and drawing */
getGC(win, &gca, font_info);
getGC(win, &gcb, font_info); /* gcb for polygon filling */
getGC(win, &gcg, font_info); /* gcg for grid */
getGC(win, &gcx, font_info); /* gcx for highlighting */
init_stipples();
XSetFillStyle(dpy, gcg, FillStippled);
XSetFillRule(dpy, gcg, WindingRule);
XSetFunction(dpy, gcg, GXxor);
XSetFillStyle(dpy, gcx, FillStippled);
XSetFillRule(dpy, gcx, WindingRule);
XSetFunction(dpy, gcx, GXxor);
XSetStipple(dpy, gcb, stipple[0]);
XSetFillStyle(dpy, gcb, FillStippled);
XSetFillRule(dpy, gcb, WindingRule);
/* dpy windows */
XMapWindow(dpy, topwin);
XMapWindow(dpy, win);
XMapWindow(dpy, menuwin);
/* turn on backing store */
attr.backing_store = Always;
XChangeWindowAttributes(dpy,win,CWBackingStore,&attr);
/* initialize various things, should be put into init() function */
xwin_grid_pts(10.0, 10.0, 2.0, 2.0, 0.0, 0.0);
xwin_grid_color(1);
xwin_grid_state(G_ON);
xwin_display_set_state(D_ON);
xwin_window_set(-100.0,-100.0, 100.0, 100.0);
/* initialize unitytransform */
unity_transform.r11 = 1.0;
unity_transform.r12 = 0.0;
unity_transform.r21 = 0.0;
unity_transform.r22 = 1.0;
unity_transform.dx = 0.0;
unity_transform.dy = 0.0;
return(0);
}
void xwin_set_title(char *title) {
static Atom atoms[2];
static char *atom_names[] = {"_NET_WM_NAME", "UTF8_STRING"};
XInternAtoms(dpy, atom_names, 2, FALSE, atoms);
XChangeProperty(dpy,topwin,atoms[0],atoms[1],8,PropModeReplace,
(unsigned char *)title, strlen(title));
}
void slide(double dx, double dy)
{
double xmin,ymin,xmax,ymax;
if (currep != NULL) {
xmin = currep->vp_xmin;
ymin = currep->vp_ymin;
xmax = currep->vp_xmax;
ymax = currep->vp_ymax;
xmin=xmin+dx;
xmax=xmax+dx;
ymin=ymin+dy;
ymax=ymax+dy;
xwin_window_set(xmin,ymin,xmax,ymax);
}
}
void zoom(int dir, double scale)
{
double xmin,ymin,xmax,ymax;
extern double x,y;
if (dir < 0) {
scale = 1.0/scale;
}
if (currep != NULL) {
xmin = currep->vp_xmin;
ymin = currep->vp_ymin;
xmax = currep->vp_xmax;
ymax = currep->vp_ymax;
xmin=x-(x-xmin)*scale;
xmax=x+(xmax-x)*scale;
ymin=y-(y-ymin)*scale;
ymax=y+(ymax-y)*scale;
xwin_window_set(xmin,ymin,xmax,ymax);
}
}
void winfit()
{
double xmin,ymin,xmax,ymax;
double dx,dy;
if (currep != NULL ) {
xmin = currep->minx;
ymin = currep->miny;
xmax = currep->maxx;
ymax = currep->maxy;
dx=(xmax-xmin);
dy=(ymax-ymin);
xmin-=dx/40.0;
xmax+=dx/40.0;
ymin-=dy/40.0;
ymax+=dy/40.0;
xwin_window_set(xmin,ymin,xmax,ymax);
}
}
void pan(double x1, double y1)
{
double xmin,ymin,xmax,ymax;
double dx,dy;
if (currep != NULL) {
xmin = currep->vp_xmin;
ymin = currep->vp_ymin;
xmax = currep->vp_xmax;
ymax = currep->vp_ymax;
dx=(xmax-xmin);
dy=(ymax-ymin);
xmin=x1-dx/2.0;
xmax=x1+dx/2.0;
ymin=y1-dy/2.0;
ymax=y1+dy/2.0;
xwin_window_set(xmin,ymin,xmax,ymax);
}
}
static int pan_x = 0;
static int pan_y = 0;
void pan_init(int x, int y) {
pan_x=x;
pan_y=y;
}
// RCW: possible improvement
// pan could be modified to scroll
// when middle button is held down and moved
void pan_update(int x, int y) {
int dx;
int dy;
dx = pan_x-x;
dy = pan_y-y;
double xx, yy;
xx=(double)dx;
yy=(double)dy;
if (abs(dx) > abs(dy)) {
slide(xx/scale, 0.0);
} else {
slide(0.0, -yy/scale);
}
pan_x=x; pan_y=y;
}
void oldpan_update(int x, int y) {
int dx;
int dy;
dx = pan_x-x;
dy = pan_y-y;
if (abs(dx)+abs(dy) > 10) {
if (dx > dy) {
zoom(1,1.1);
} else {
zoom(-1,1.1);
}
pan_x=x; pan_y=y;
}
}
void dosplash() {
DB_TAB *splashrep;
extern double scale,xoffset,yoffset;
double x1,x2,y1,y2;
double dratio,wratio;
BOUNDS bb;
bb.init=0;
currep=splashrep=db_lookup(EVget("PIG_SPLASH_REP"));
if (splashrep != NULL) {
x1 = splashrep->vp_xmin;
y1 = splashrep->vp_ymin;
x2 = splashrep->vp_xmax;
y2 = splashrep->vp_ymax;
x1 = splashrep->minx;
y1 = splashrep->miny;
x2 = splashrep->maxx;
y2 = splashrep->maxy;
grid_xd = splashrep->grid_xd;
grid_yd = splashrep->grid_yd;
grid_xs = splashrep->grid_xs;
grid_ys = splashrep->grid_ys;
grid_xo = splashrep->grid_xo;
grid_yo = splashrep->grid_yo;
dratio = (double) g_height/ (double)g_width;
wratio = (y2-y1)/(x2-x1);
if (wratio > dratio) { /* world is taller,skinnier than display */
scale=0.9*((double) g_height)/(y2-y1);
} else { /* world is shorter,fatter than display */
scale=0.9*((double) g_width)/(x2-x1);
}
xoffset = (((double) g_width)/2.0) - ((x1+x2)/2.0)*scale;
yoffset = (((double) g_height)/2.0) + ((y1+y2)/2.0)*scale;
db_render(splashrep,0,&bb,0);
} else {
printf("could not load splash file: %s\n", EVget("PIG_SPLASH_REP"));
}
}
int procXevent()
{
/* readline select stuff */
int nf, nfds, cn, in;
int i;
char nestindicator;
struct timeval *timer = (struct timeval *) 0; /* select blocks indefinitely */
//struct timeval timer;
//timer.tv_sec = 0; /* wait times */
//timer.tv_usec = 0;
fd_set rset, tset;
static char *s = NULL;
BOUNDS bb;
/* courtesy g_plt_X11.c code from gnuplot */
cn = ConnectionNumber(dpy);
in = fileno(stdin);
FD_ZERO(&rset);
FD_SET(cn, &rset);
FD_SET(in, &rset);
nfds = (cn > in) ? cn + 1 : in + 1;
while (1) {
if (need_redraw) {
need_redraw = 0;
XClearArea(dpy, win, 0, 0, 0, 0, False);
for (i=1; i<=num_menus; i++) {
paint_pane(menutab[i].pane, menutab, gca, gcb, BLACK);
}
if (currep != NULL ) {
bb.init=0;
db_render(currep,0,&bb,0); /* render the current rep */
draw_grid(win, gcg, currep->grid_xd, currep->grid_yd,
currep->grid_xs, currep->grid_ys,
currep->grid_xo, currep->grid_yo);
if (xwin_display_state() == D_ON) {
rubber_draw(x, y, 1);
}
nestindicator=currep->physical?'P':'L';
XDrawImageString(dpy,win,gcg,g_width-20, g_height-20, &nestindicator, 1);
XFlush(dpy);
} else {
dosplash();
draw_grid(win, gcg, grid_xd, grid_yd,
grid_xs, grid_ys, grid_xo, grid_yo);
XFlush(dpy);
}
}
/* if some event resulted in text in buffer 's' */
/* feed it back to readline routine */
if (s!=NULL && *s!='\0') {
return((int) *(s++));
} else {
s = NULL;
}
tset = rset;
nf = select(nfds, &tset, (fd_set *) 0, (fd_set *) 0, timer);
if (nf < 0) {
if (errno == EINTR)
continue;
eprintf("select failed. errno:%d", errno);
}
if (nf > 0) {
XFlush(dpy);
}
if (FD_ISSET(cn, &tset)) { /* pending X Event */
xwin_doXevent(&s);
}
if (FD_ISSET(in, &tset)) { /* pending stdin */
return(getc(stdin));
}
}
}
void xwin_doXevent(s)
char **s;
{
static int button_down=0;
XEvent xe;
int i,j;
int debug=0;
static char buf[BUF_SIZE];
static char pickbuf[BUF_SIZE];
// static char tmp[BUF_SIZE];
static double xold,yold;
unsigned long all = 0xffffffff;
static int charcount;
static char keybuf[10];
static int keybufsize=10;
KeySym keysym;
XComposeStatus *compose = NULL;
BOUNDS bb;
if (need_redraw) {
need_redraw = 0;
XClearArea(dpy, win, 0, 0, 0, 0, False);
for (i=1; i<=num_menus; i++) {
paint_pane(menutab[i].pane, menutab, gca, gcb, BLACK);
}
if (currep != NULL ) {
bb.init=0;
db_render(currep,0,&bb,0); /* render the current rep */
draw_grid(win, gcg, currep->grid_xd, currep->grid_yd,
currep->grid_xs, currep->grid_ys,
currep->grid_xo, currep->grid_yo);
if (xwin_display_state() == D_ON) {
rubber_draw(x, y, 1);
}
XFlush(dpy);
} else {
dosplash();
draw_grid(win, gcg, grid_xd, grid_yd,
grid_xs, grid_ys, grid_xo, grid_yo);
XFlush(dpy);
}
}
while (XCheckMaskEvent(dpy, all, &xe)) { /* pending X Event */
switch (xe.type) {
case MotionNotify:
if (debug) printf("EVENT LOOP: got Motion\n");
if (!button_down) {
x = (double) xe.xmotion.x;
y = (double) xe.xmotion.y;
V_to_R(&x,&y);
snapxy(&x,&y);
sprintf(buf,"(%-8g,%-8g)", x, y);
if (xwin_display_state() == D_ON && xe.xmotion.window == win) {
XDrawImageString(dpy,win,gcg,20, 20, buf, strlen(buf));
}
} else {
xr = xe.xmotion.x;
yr = xe.xmotion.y;
pan_update(xr, yr);
moved=1;
}
if (xold != x || yold != y) {
if (xwin_display_state() == D_ON && xe.xmotion.window == win) { /* RCW */
rubber_draw(x, y, 0);
}
xold=x;
yold=y;
}
break;
case Expose:
if (debug) printf("EVENT LOOP: got Expose\n");
if (xe.xexpose.count != 0)
break;
if (xe.xexpose.window == win) {
if (currep != NULL) {
xwin_window_set(
currep->vp_xmin,
currep->vp_ymin,
currep->vp_xmax,
currep->vp_ymax );
draw_grid(win, gcg, currep->grid_xd, currep->grid_yd,
currep->grid_xs, currep->grid_ys, currep->grid_xo, currep->grid_yo);
} else {
xwin_window_set( vp_xmin, vp_ymin, vp_xmax, vp_ymax );
draw_grid(win, gcg, grid_xd, grid_yd,
grid_xs, grid_ys, grid_xo, grid_yo);
}
}
for (j=1; j<=num_menus; j++) {
if (menutab[j].pane == xe.xexpose.window) {
paint_pane(xe.xexpose.window, menutab, gca, gcb, BLACK);
}
}
need_redraw++;
XFlush(dpy);
break;
case ConfigureNotify:
if (debug) printf("EVENT LOOP: got Config Notify\n");
top_width = xe.xconfigure.width;
g_height=top_height = xe.xconfigure.height;
g_width=top_width-menu_width;
XMoveWindow(dpy, menuwin, top_width-menu_width, 0);
XResizeWindow(dpy, menuwin, menu_width, g_height);
XResizeWindow(dpy, win, top_width-menu_width, g_height);
if (currep != NULL) {
xwin_window_parms_only( currep->vp_xmin,
currep->vp_ymin,
currep->vp_xmax,
currep->vp_ymax );
if (currep->prims < 1000) {
// only do continuous redraw on resize
// for small drawings...
need_redraw++;
}
} else {
xwin_window_set( vp_xmin, vp_ymin, vp_xmax, vp_ymax );
}
break;
case ButtonRelease:
button_down=0;
if (debug) printf("EVENT LOOP: got ButtonRelease\n");
if (xe.xexpose.window == win) {
switch (xe.xbutton.button) {
case 2: /* left button */
if (abs(xa-xb) < 3 && abs(ya-yb) < 3) {
winfit();
xa = xb = ya = yb = -1; /* set to impossible values */
} else if (!moved || (abs(xb-xr) < 3 && abs(yb-yr) < 3)) {
pan(x,y);
}
break;
default:
break;
}
}
moved=0;
break;
case ButtonPress:
if (xe.xexpose.window == win) {
switch (xe.xbutton.button) {
case 1: /* left button */
x = (double) xe.xmotion.x;
y = (double) xe.xmotion.y;
V_to_R(&x,&y);
/* FIXME: turn off snapping for fine picking */
/*
if (snap==0) {
snap=1;
} else {
snapxy(&x,&y);
}
*/
snapxy(&x,&y);
/* returning mouse loc as a string */
sprintf(pickbuf," %f, %f\n", x, y);
*s = pickbuf;
if (debug) printf("EVENT LOOP: got ButtonPress\n");
break;
case 2: /* middle button */
button_down=1;
xa = xb; ya = yb;
xr = xb = xe.xmotion.x;
yr = yb = xe.xmotion.y;
pan_init(xb,yb);
break;
case 3: /* right button */
/* RIGHT button returns EOC */
sprintf(pickbuf," ;\n");
*s = pickbuf;
break;
case 4: /* mouse scroll button (up/out) */
zoom(1,1.2);
break;
case 5: /* mouse scroll button (in/down) */
zoom(-1,1.1);
break;
/* RIGHT button returns EOC */
default:
/* just ignore unexpected events... */
/* my laptop touchpad mouse makes random */
/* button #7 events all the time (?) */
// printf("a: unexpected button event: %d",
// xe.xbutton.button);
break;
}
} else {
for (j=1; j<=num_menus; j++) {
if (menutab[j].pane == xe.xbutton.window) {
switch (xe.xbutton.button) {
case 1:
*s=menutab[j].text;
break;
case 2:
break;
case 3:
/* RIGHT button returns EOC */
sprintf(pickbuf," ;\n");
*s = pickbuf;
break;
default:
/* printf("b: unexpected button event: %d",
xe.xbutton.button); */
break;
}
}
}
}
break;
case KeyPress:
if (debug) printf("EVENT LOOP: got KeyPress\n");
charcount = XLookupString((XKeyEvent * ) &xe, keybuf,
keybufsize, &keysym, compose);
if (charcount >= 1) {
*s = keybuf;
} else {
if (compose == NULL) {
// tmp[0]=(char) ((char)keysym - 64);
// tmp[1]='\0';
// FIXME: F11 started printing garbage (-94 decimal) when shift
// key was pressed. Traced it to this next statement...
// *s = tmp;
}
}
break;
case MapNotify:
case UnmapNotify:
case ReparentNotify:
break;
case KeyRelease:
break;
default:
printf("got unexpected default event: %s",
event_names[xe.type]);
break;
}
}
}
void getGC(
Window win,
GC *gc,
XFontStruct *font_info
) {
unsigned long valuemask = 0;
XGCValues values;
unsigned int line_width = 1;
int line_style = LineSolid;
int cap_style = CapButt;
int join_style = JoinMiter;
int dash_offset = 0;
static char dash_list[] = {1,2};
int list_length = 2;
/* Create default Graphics Context */
*gc = XCreateGC(dpy, win, valuemask, &values);
/* Specify font */
XSetFont(dpy, *gc, font_info->fid);
/* Specify black foreground since :efault window background
is white and default foreground is undefined */
XSetBackground(dpy, *gc, BlackPixel(dpy, scr));
XSetForeground(dpy, *gc, WhitePixel(dpy, scr));
/* set line attributes */
XSetLineAttributes(dpy, *gc, line_width, line_style,
cap_style, join_style);
/* set dashes */
XSetDashes(dpy, *gc, dash_offset, dash_list, list_length);
}
void load_font(XFontStruct **font_info) {
/* char *fontname = "9x15"; */
/* char *fontname = "12x24"; */
/* char *fontname = "10x20"; */
/* Load font and get font information structure */
*font_info = NULL;
if (*font_info == NULL)
*font_info = XLoadQueryFont(dpy, EVget("PIG_X11MENU_FONT"));
if (*font_info == NULL)
*font_info = XLoadQueryFont(dpy, "10x20");
if (*font_info == NULL)
*font_info = XLoadQueryFont(dpy, "9x15");
if (*font_info == NULL)
*font_info = XLoadQueryFont(dpy, "fixed");
if (*font_info == NULL) {
printf("can't find any useable X11 font. You might\n");
printf("try running \"xlsfonts to see what is available\"\n");
printf("and then setting the PIG_X11MENU_FONT environment\n");
eprintf("variable to something on your system...\n");
}
}
/* this routine is used for doing the rubber band drawing during interactive */
/* point selection. It is identical to xwin_draw_line() but uses an xor style */
/* used for grid, color changes with GRID :C<grid_color> */
void xwin_xor_line(int x1, int y1, int x2, int y2)
{
if (xwin_display_state() == D_ON) {
XDrawLine(dpy, win, gcg, x1, y1, x2, y2);
}
}
/* always use white for XOR, otherwise goes black on some color */
void xwin_rubber_line(int x1, int y1, int x2, int y2)