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extern Pixmap pointer_pmap; // aus Modul graph.C ...
extern int pointer_off_x, pointer_off_y; // dto.
#ifndef _cursor_h
# include "cursor.h"
#endif
// ------ PBallNorm ----------------------------------------------------------
int PBallNorm::instance_count = 0;
int PBallNorm::pwidth = 0;
int PBallNorm::pheight = 0;
Pixmap PBallNorm::pmap = 0;
GC PBallNorm::gc_bit = 0;
double PBallNorm::next_frame = 0.0;
double PBallNorm::last_frame = 0.0;
PBallNorm::PBallNorm( PBallType type, char *disp_name ) :
PBallTop( type )
{
//
// Remote Display ffnen
//
rem_dpy = XOpenDisplay( disp_name );
if (!rem_dpy) {
fprintf( stderr, "ERROR: can't open display '%s'.\n", disp_name );
exit(0);
}
scr=DefaultScreen(rem_dpy);
//
// Cursor berdefinieren
//
Cursor cursor;
Pixmap pixmap;
XColor col1;
Window grab_win;
pixmap = XCreateBitmapFromData(rem_dpy,
RootWindow( rem_dpy, scr ),
cursor_bits, cursor_width, cursor_height );
XParseColor(rem_dpy,DefaultColormap(rem_dpy,scr), "black", &col1 );
cursor = XCreatePixmapCursor( rem_dpy, pixmap, pixmap, &col1, &col1,
cursor_x_hot, cursor_y_hot );
if (!strcmp(DisplayString(dpy),DisplayString(rem_dpy))) {
warp_dpy = dpy;
grab_win = (new_root)?new_root:win;
}
else {
warp_dpy = rem_dpy;
grab_win = RootWindow( rem_dpy, scr );
}
XGrabPointer( rem_dpy, grab_win,
False, (unsigned)(ButtonPressMask|ButtonReleaseMask|PointerMotionMask),
GrabModeAsync, GrabModeAsync, None, cursor, CurrentTime );
//
// Transformation festlegen
//
w2n_x = DisplayWidth( rem_dpy,scr)/world_x;
w2n_y = DisplayHeight(rem_dpy,scr)/world_y;
//
// Pointer auf Bildschirm initialisieren.
//
x_old = -20; // ausserhalb des Bildschirms (wegen erstem CopyArea)
y_old = -20;
XFreePixmap( rem_dpy, pixmap );
XFreeCursor( rem_dpy, cursor );
if (!instance_count++) {
pwidth = 30;
pheight = 30;
pmap = XCreatePixmap(dpy,win,pwidth,pheight,1);
gc_bit = XCreateGC(dpy,pmap,0,0);
XSetState(dpy,gc_bit,1,0,GXxor,1);
next_frame=GetCurrentTime();
last_frame=GetCurrentTime();
}
}
PBallNorm::~PBallNorm() {
if (!--instance_count) {
XFreePixmap(dpy,pmap);
XFreeGC(dpy,gc_bit);
}
//
// Pointer vom Bildschirm lschen
//
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
XSync( rem_dpy, 0 );
XCloseDisplay( rem_dpy );
}
void PBallNorm::WaitForEvents() {
PBallTop *current;
// if any balls are running or any of the pballs is not ReadyToSleep
// we have to return directly
if (!frames_per_sec) {
if (g->running_balls) return;
for (current=pball_queue;current;current=current->next) {
if (!(current->mode&ReadyToSleep)) return;
}
}
// collected the opened displays into a fd-structure for the select
// statement and wait a bit using a select call (if there aren't already
// some events in the queue.
struct timeval timeout;
if (!frames_per_sec) {
timeout.tv_sec = 1;
timeout.tv_usec = 0;
}
else {
double ctime = GetCurrentTime();
if (current_time<last_frame || ctime>next_frame) {
last_frame = ctime;
next_frame = ctime + 1.0/frames_per_sec;
return;
}
timeout.tv_sec = 0;
timeout.tv_usec = (unsigned)(1000000*(next_frame-ctime));
}
int nfds;
#ifndef FD_ZERO
// if the macros aren't defined, we assume that this is a system
// using integers for the select-parameters
int readfds;
# define FD_ZERO(n) n=0
# define FD_SET(b,n) (n|(1<<b))
# undef FDS_TYPE
# define FDS_TYPE (int*)
#else
fd_set readfds;
#endif
FD_ZERO( &readfds );
FD_SET( ConnectionNumber(dpy), &readfds );
nfds = ConnectionNumber(dpy)+1;
if (XEventsQueued(dpy,QueuedAfterFlush)) return;
for (current=pball_queue;current;current=current->next) {
FD_SET(ConnectionNumber(((PBallNorm*)current)->rem_dpy),&readfds);
if (ConnectionNumber(((PBallNorm*)current)->rem_dpy)>=nfds) {
nfds=ConnectionNumber(((PBallNorm*)current)->rem_dpy)+1;
}
if (XEventsQueued(((PBallNorm*)current)->rem_dpy,QueuedAfterFlush))return;
}
// FDS_TYPE should have been set in global.h to the type, that is need
// in the select-call for the filedescriptors.
if (!select(nfds,FDS_TYPE &readfds,0,0,&timeout)) {
/* TIMEOUT */
if (frames_per_sec) {
last_frame = next_frame;
next_frame = next_frame + 1.0/frames_per_sec;
}
}
}
void PBallNorm::Update() {
XEvent event;
while (XEventsQueued( rem_dpy, QueuedAfterFlush )) {
XNextEvent( rem_dpy, &event );
switch( event.xany.type ) {
case MotionNotify:
while( XCheckMaskEvent( rem_dpy, PointerMotionMask, &event ));
PointerMoveTo(Vec2(Real(event.xmotion.x_root)/w2n_x,
Real(event.xmotion.y_root)/w2n_y));
break;
case ButtonPress:
Press( event.xbutton.button );
break; // case ButtonPress
case ButtonRelease:
Release( event.xbutton.button );
} // switch(event.type)
}
PBallTop::Update();
}
void PBallNorm::Warp( const Vec2 &dest ) {
XEvent event;
XWarpPointer( warp_dpy, None, RootWindow( rem_dpy, scr ),
0,0,0,0 ,
(int)(dest.X()*w2n_x),
(int)(dest.Y()*w2n_y) );
if (mode&UsingTool) MoveAimingTool();
XSync( warp_dpy, 0 );
while( XCheckMaskEvent( rem_dpy, PointerMotionMask, &event ));
}
void PBallNorm::RedrawPointer() {
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
}
void PBallNorm::SetPointer( int x, int y ) {
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
x_old = x;
y_old = y;
// RedrawPointer:
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
}
// ------------------------------------------------------------
#ifndef XPix
# define XPix(x) ((int)((x)*w2n))
# define YPix(y) ((int)((y)*w2n))
# define Pix(r) ((int)((r)*w2n))
#endif
void PBallNorm::DrawQueue() {
if (valid_queue_position) {
XPoint p[3];
p[0].x = XPix(q_end_s.X());
p[0].y = YPix(q_end_s.Y());
p[1].x = XPix(q_s1_s.X());
p[1].y = YPix(q_s1_s.Y());
p[2].x = XPix(q_s2_s.X());
p[2].y = YPix(q_s2_s.Y());
XFillPolygon(dpy,win,gc_current,p,3,0,0);
}
}
void PBallNorm::StartQueue(const Vec2 &end, const Vec2 &s1, const Vec2 &s2) {
q_end_s = end;
q_s1_s = s1;
q_s2_s = s2;
valid_queue_position = 1;
DrawQueue();
}
void PBallNorm::SetMinSize( int width, int height ) {
// ggf. vergroesserte Pixmap anlegen
if (width>pwidth||height>pheight) {
XFreePixmap(dpy,pmap);
if (width>pwidth) pwidth =width +10;
if (height>pheight) pheight=height+10;
pmap = XCreatePixmap(dpy,win,pwidth+2,pheight+2,1);
}
}
#define _TEST_BUG
void PBallNorm::MoveQueue(const Vec2 &end, const Vec2 &s1, const Vec2 &s2) {
XPoint p[6];
unsigned i;
#ifdef TEST_BUG
//
// There is an optimization (-O2) bug in gcc-2.7.0, so that q_end_s always
// seems be equal to end. I assume, that due to the optimization, the
// assignment q_end_s = end is done before the first assignment:
//
printf( "OLD POSITION: %f x %f\n", (float)q_end_s.X(), (float)q_end_s.Y() );
printf( "NEW POSITION: %f x %f\n", (float)end.X(), (float)end.Y() );
#endif
p[0].x = XPix(q_end_s.X()); // triangle-coordinates of old queue
p[0].y = YPix(q_end_s.Y());
p[1].x = XPix(q_s1_s.X());
p[1].y = YPix(q_s1_s.Y());
p[2].x = XPix(q_s2_s.X());
p[2].y = YPix(q_s2_s.Y());
q_end_s = end; // store new position
q_s1_s = s1;
q_s2_s = s2;
p[3].x = XPix(q_end_s.X()); // triangle-coordinates of new queue
p[3].y = YPix(q_end_s.Y());
p[4].x = XPix(q_s1_s.X());
p[4].y = YPix(q_s1_s.Y());
p[5].x = XPix(q_s2_s.X());
p[5].y = YPix(q_s2_s.Y());
valid_queue_position = 1;
int min_x = p[0].x;
int max_x = p[0].x;
int min_y = p[0].y;
int max_y = p[0].y;
#ifdef TEST_BUG
printf( "NOT ASSIGNED: %f x %f\n", (float)q_end_s.X(), (float)q_end_s.Y() );
#endif
// Minimum suchen
for (i=1;i<sizeof(p)/sizeof(XPoint);i++) {
if (p[i].x < min_x) min_x = p[i].x;
if (p[i].x > max_x) max_x = p[i].x;
if (p[i].y < min_y) min_y = p[i].y;
if (p[i].y > max_y) max_y = p[i].y;
}
#ifdef TEST_BUG
printf( " ASSIGNED: %f x %f\n", (float)q_end_s.X(), (float)q_end_s.Y() );
#endif
// Punkte nun relativ zur Bitmap
for (i=0;i<sizeof(p)/sizeof(XPoint);i++) {
p[i].x -= min_x;
p[i].y -= min_y;
}
int width = max_x - min_x;
int height = max_y - min_y;
SetMinSize(width,height);
// Pixmap aufbauen und ins Fenster verknuepfen
XSetFunction(dpy,gc_bit,GXclear);
XFillRectangle(dpy,pmap,gc_bit,0,0,width,height);
XSetFunction(dpy,gc_bit,GXxor);
XFillPolygon(dpy,pmap,gc_bit,&p[0],3,0,0);
XFillPolygon(dpy,pmap,gc_bit,&p[3],3,0,0);
XCopyPlane(dpy,pmap,win,gc_current,0,0,width,height,min_x,min_y,1);
}
void PBallNorm::EndQueue() {
DrawQueue();
valid_queue_position = 0;
}
// ------ PBall -------------------------------------------------------------
PBall::PBall( PBallType type, char *disp_name ) :
PBallNorm( type, disp_name )
{
zoom = 0;
ozoom = 0;
off_x = 0.0;
off_y = 0.0;
mid_x = DisplayWidth( rem_dpy,scr)/2;
mid_y = DisplayHeight(rem_dpy,scr)/2;
zfact = 32;
}
PBall::~PBall() {
}
void PBall::Update() {
XEvent event;
while (XEventsQueued( rem_dpy, QueuedAfterFlush )) {
XNextEvent( rem_dpy, &event );
switch( event.xany.type ) {
case MotionNotify:
while( XCheckMaskEvent( rem_dpy, PointerMotionMask, &event ));
if (zoom) {
off_x=(double)(event.xmotion.x_root-mid_x)/zfact;
off_y=(double)(event.xmotion.y_root-mid_y)/zfact;
PointerMoveTo(Vec2(Real(zoom_x+off_x)/w2n_x,
Real(zoom_y+off_y)/w2n_y));
}
else {
PointerMoveTo(Vec2(Real(event.xmotion.x_root+off_x)/w2n_x,
Real(event.xmotion.y_root+off_y)/w2n_y));
}
break;
case ButtonPress:
if (!zoom) {
if ( event.xbutton.button == Button2 ) {
StartZooming( event.xbutton.x_root, event.xbutton.y_root );
}
else {
Press( event.xbutton.button );
}
}
break; // case ButtonPress
case ButtonRelease:
if ( event.xbutton.button == Button2 ) StopZooming();
else Release( event.xbutton.button );
} // switch(event.type)
}
PBallTop::Update();
}
void PBall::StartZooming(int x,int y) {
if (!zoom) {
zoom_x = x; zoom_y = y;
zoom=1;
XWarpPointer( warp_dpy, None, RootWindow( rem_dpy, scr ),
0,0,0,0,(int)(mid_x+zfact*off_x),(int)(mid_y+zfact*off_y) );
SetPointer( (int)(dest.X()*w2n), (int)(dest.Y()*w2n) );
XSync( warp_dpy, 1 );
}
}
void PBall::StopZooming() {
if (zoom) {
zoom_x += (int)floor(off_x);
zoom_y += (int)floor(off_y);
off_x = off_x-floor(off_x);
off_y = off_y-floor(off_y);
XWarpPointer( warp_dpy, None, RootWindow( rem_dpy, scr ),
0,0,0,0,zoom_x,zoom_y );
XSync( warp_dpy, 0 );
zoom=0;
SetPointer( (int)(dest.X()*w2n), (int)(dest.Y()*w2n) );
}
}
void PBall::Warp( const Vec2 &dest ) {
StopZooming();
PBallNorm::Warp(dest);
}
//
// when cursor moves less than ISTEP pixels (in zoom mode) at an instant
// both grid-displays will be double-buffered in the same pixmap
//
#define ISTEP 2
void PBall::SetPointer( int x, int y ) {
SetMinSize(2*zfact+2+2*ISTEP,2*zfact+2+2*ISTEP);
int oox=ISTEP; // internal offset in help-pixmap
int ooy=ISTEP;
if (ozoom) {
// prepare the grid of the old position (centered)
XSetFunction(dpy,gc_bit,GXclear);
XFillRectangle(dpy,pmap,gc_bit,0,0,2*zfact+2+2*ISTEP,2*zfact+2+2*ISTEP);
/*** GRID DRAWER (identical code as in zoom) ***/
XSetFunction(dpy,gc_bit,GXxor);
XDrawRectangle(dpy,pmap,gc_bit,
oox,ooy,2*zfact+1,2*zfact+1);
XDrawLine(dpy,pmap,gc_bit,
(int)(zfact-ooff_x)+oox,(int)(ooy),
(int)(zfact-ooff_x)+oox,(int)(2*zfact+ooy) );
XDrawLine(dpy,pmap,gc_bit,
(int)(2*zfact-ooff_x)+oox,(int)(ooy),
(int)(2*zfact-ooff_x)+oox,(int)(2*zfact+ooy) );
XDrawLine(dpy,pmap,gc_bit,
(int)(oox),(int)(zfact-ooff_y)+ooy,
(int)(2*zfact+oox),(int)(zfact-ooff_y)+ooy );
XDrawLine(dpy,pmap,gc_bit,
(int)(oox),(int)(2*zfact-ooff_y)+ooy,
(int)(2*zfact+oox),(int)(2*zfact-ooff_y)+ooy );
/*** end GRID DRAWER ***/
}
oox = x-x_old+ISTEP;
ooy = y-y_old+ISTEP;
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
x_old = x;
y_old = y;
XCopyArea( dpy, pointer_pmap, win, gc_cursor, 0, 0, 16, 16,
x_old-pointer_off_x, y_old-pointer_off_y );
if (zoom) {
ooff_x = (off_x-floor(off_x))*zfact;
ooff_y = (off_y-floor(off_y))*zfact;
if (ozoom&&(oox<0)||(oox>2*ISTEP)||(ooy<0)||(ooy>2*ISTEP)) {
// flush prepared map
XCopyPlane(dpy,pmap,win,gc_cursor,ISTEP,ISTEP,2*zfact+2,2*zfact+2,
x_old-zfact-oox+ISTEP, y_old-zfact-ooy+ISTEP, 1 );
ozoom=0;
}
if (!ozoom) {
// reset map
oox = ISTEP;
ooy = ISTEP;
XSetFunction(dpy,gc_bit,GXclear);
XFillRectangle(dpy,pmap,gc_bit,0,0,2*zfact+2+2*ISTEP,2*zfact+2+2*ISTEP);
}
ozoom=1;
/*** GRID DRAWER (identical code as in ozoom) ***/
XSetFunction(dpy,gc_bit,GXxor);
XDrawRectangle(dpy,pmap,gc_bit,
oox,ooy,2*zfact+1,2*zfact+1);
XDrawLine(dpy,pmap,gc_bit,
(int)(zfact-ooff_x)+oox,(int)(ooy),
(int)(zfact-ooff_x)+oox,(int)(2*zfact+ooy) );
XDrawLine(dpy,pmap,gc_bit,
(int)(2*zfact-ooff_x)+oox,(int)(ooy),
(int)(2*zfact-ooff_x)+oox,(int)(2*zfact+ooy) );
XDrawLine(dpy,pmap,gc_bit,
(int)(oox),(int)(zfact-ooff_y)+ooy,
(int)(2*zfact+oox),(int)(zfact-ooff_y)+ooy );
XDrawLine(dpy,pmap,gc_bit,
(int)(oox),(int)(2*zfact-ooff_y)+ooy,
(int)(2*zfact+oox),(int)(2*zfact-ooff_y)+ooy );
/*** end GRID DRAWER ***/
// copy full map (2*zfact+2+2*ISTEP), since ozoom&zoom might be joined
XCopyPlane(dpy,pmap,win,gc_cursor,0,0,2*zfact+2+2*ISTEP,2*zfact+2+2*ISTEP,
x_old-zfact-oox, y_old-zfact-ooy, 1 );
}
else {
if (ozoom) {
// flush prepared map
XCopyPlane(dpy,pmap,win,gc_cursor,ISTEP,ISTEP,2*zfact+2,2*zfact+2,
x_old-zfact-oox+ISTEP, y_old-zfact-ooy+ISTEP, 1 );
}
ozoom=0;
}
}
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