int Flu_Wrap_Group :: Scrollbar :: handle( int event )
{
if( event == FL_MOUSEWHEEL )
{
handle_drag( clamp( value() + linesize() * Fl::e_dy ) );
return 1;
}
else
return Fl_Scrollbar::handle( event );
}
void Fl_Value_Input_Spin::increment_cb() {
if (!mouseobj) return;
delta+=deltadir;
double v;
switch (drag) {
case 3: v = increment(value(), deltadir*100); break;
case 2: v = increment(value(), deltadir*10); break;
default:v = increment(value(), deltadir); break;
}
v = round(v);
handle_drag(soft()?softclamp(v):clamp(v));
}
void Fl_Scrollbar::increment_cb()
{
double i;
switch (which_pushed)
{
case UP_ARROW: i = -linesize(); break;
default:i = linesize(); break;
case ABOVE_SLIDER: i = -pagesize(); break;
case BELOW_SLIDER: i = pagesize(); break;
}
handle_drag(value()+i);
}
void Flu_Spinner :: _setvalue( double v )
{
if( _wrapRange )
{
while( v > maximum() )
v = minimum() + (v - maximum());
while( v < minimum() )
v = maximum() - (minimum() - v);
}
else
{
v = clamp(v);
}
handle_drag(v);
}
int Fl_Dial::handle(int event)
{
int X = 0; int Y = 0; int W = w(); int H = h();
box()->inset(X,Y,W,H);
switch (event)
{
case FL_PUSH:
handle_push();
case FL_DRAG:
{
int mx = Fl::event_x()-X-W/2;
int my = Fl::event_y()-Y-H/2;
if (!mx && !my) return 1;
double angle = 270-atan2((float)-my, (float)mx)*180/M_PI;
double oldangle = (a2-a1)*(value()-minimum())/(maximum()-minimum()) + a1;
while (angle < oldangle-180) angle += 360;
while (angle > oldangle+180) angle -= 360;
double val;
if ((a1<a2) ? (angle <= a1) : (angle >= a1))
{
val = minimum();
}
else if ((a1<a2) ? (angle >= a2) : (angle <= a2))
{
val = maximum();
}
else
{
val = minimum() + (maximum()-minimum())*(angle-a1)/(a2-a1);
}
handle_drag(val);
} return 1;
case FL_RELEASE:
if (!Fl::pushed()) handle_release();
return 1;
default:
return Fl_Valuator::handle(event);
}
}
int Fl_Roller::handle(int event)
{
static int ipos;
int newpos = type()==HORIZONTAL ? Fl::event_x() : -Fl::event_y();
switch (event)
{
case FL_PUSH:
handle_push();
ipos = newpos;
return 1;
case FL_DRAG:
handle_drag(previous_value()+(newpos-ipos)*(step()?step():.01));
return 1;
case FL_RELEASE:
handle_release();
return 1;
case FL_KEY:
// Only arrows in the correct direction are used. This allows the
// opposite arrows to be used to navigate between a set of parellel
// rollers.
switch (Fl::event_key())
{
case FL_Up:
case FL_Down:
case FL_Home:
case FL_End:
if (type()==HORIZONTAL) return 0;
break;
case FL_Left:
case FL_Right:
if (type() != HORIZONTAL) return 0;
} // else fall through...
default:
return Fl_Valuator::handle(event);
}
}
int Fl_Slider::handle(int event, int x, int y, int w, int h)
{
switch (event)
{
case FL_FOCUS:
case FL_UNFOCUS:
redraw(FL_DAMAGE_ALL);
return 1;
case FL_PUSH:
redraw(FL_DAMAGE_HIGHLIGHT);
handle_push();
case FL_DRAG:
{
// figure out the space the slider moves in and where the event is:
int mx;
if (horizontal())
{
w = w-box()->dw();
mx = Fl::event_x()-x-box()->dx();
}
else
{
w = h-box()->dh();
mx = Fl::event_y()-y-box()->dy();
}
if (w <= slider_size_) return 1;
static int offcenter;
int X = slider_position(value(), w);
if (event == FL_PUSH)
{
offcenter = mx-X;
// we are done if they clicked on the slider:
if (offcenter >= (slider_size() ? 0 : -8) && offcenter <= slider_size_)
return 1;
if (Fl::event_button() > 1)
{
// Move the near end of the slider to the cursor. This is good
// for scrollbars.
offcenter = (offcenter < 0) ? 0 : slider_size_;
}
else
{
// Center the slider under the cursor, what most toolkits do
offcenter = slider_size_/2;
}
}
double v;
RETRY:
X = mx-offcenter;
if (X < 0)
{
X = 0;
offcenter = mx; if (offcenter < 0) offcenter = 0;
}
else if (X > (w-slider_size_))
{
X = w-slider_size_;
offcenter = mx-X; if (offcenter > slider_size_) offcenter = slider_size_;
}
v = position_value(X, w);
handle_drag(v);
// make sure a click outside the sliderbar moves it:
if (event == FL_PUSH && value() == previous_value())
{
offcenter = slider_size_/2;
event = FL_DRAG;
goto RETRY;
}
return 1;
}
case FL_RELEASE:
handle_release();
redraw(FL_DAMAGE_HIGHLIGHT);
return 1;
case FL_KEY:
// Only arrows in the correct direction are used. This allows the
// opposite arrows to be used to navigate between a set of parellel
// sliders.
switch (Fl::event_key())
{
case FL_Up:
case FL_Down:
if (horizontal()) return 0;
break;
case FL_Left:
case FL_Right:
if (!horizontal()) return 0;
}
default:
return Fl_Valuator::handle(event);
}
}
int Fl_Scrollbar::handle(int event)
{
// area of scrollbar:
int X=0; int Y=0; int W=w(); int H=h(); box()->inset(X,Y,W,H);
// adjust slider area to be inside the arrow buttons:
if (vertical())
{
if (H >= 3*W) {Y += W; H -= 2*W;}
}
else
{
if (W >= 3*H) {X += H; W -= 2*H;}
}
// which widget part is highlighted?
int mx = Fl::event_x();
int my = Fl::event_y();
int which_part;
if (!Fl::event_inside(0, 0, w(), h())) which_part = NOTHING;
else if (vertical())
{
if (my < Y) which_part = UP_ARROW;
else if (my >= Y+H) which_part = DOWN_ARROW;
else
{
int slidery = slider_position(value(), H);
if (my < Y+slidery) which_part = ABOVE_SLIDER;
else if (my >= Y+slidery+slider_size()) which_part = BELOW_SLIDER;
else which_part = SLIDER;
}
} // horizontal
else
{
if (mx < X) which_part = UP_ARROW;
else if (mx >= X+W) which_part = DOWN_ARROW;
else
{
int sliderx = slider_position(value(), W);
if (mx < X+sliderx) which_part = ABOVE_SLIDER;
else if (mx >= X+sliderx+slider_size()) which_part = BELOW_SLIDER;
else which_part = SLIDER;
}
}
switch (event)
{
case FL_FOCUS:
return 0;
case FL_ENTER:
case FL_MOVE:
if (!highlight_color()) return 1;
if (which_part != which_highlight)
{
which_highlight = which_part;
redraw(FL_DAMAGE_HIGHLIGHT);
}
return 1;
case FL_LEAVE:
if (which_highlight)
{
which_highlight = 0;
redraw(FL_DAMAGE_HIGHLIGHT);
}
return 1;
case FL_PUSH:
// Clicking on the slider or middle or right click on the trough
// gives us normal slider behavior:
if (which_part == SLIDER ||
Fl::event_button() > 1 && which_part > DOWN_ARROW)
{
which_pushed = SLIDER;
return Fl_Slider::handle(event, X,Y,W,H);
}
handle_push();
goto J1;
case FL_DRAG:
if (which_pushed==SLIDER) return Fl_Slider::handle(event, X,Y,W,H);
if (which_part == SLIDER) which_part = NOTHING;
// it is okay to switch between arrows and nothing, but no other
// changes are allowed:
if (!which_pushed && which_part <= DOWN_ARROW) ;
else if (!which_part && which_pushed <= DOWN_ARROW) ;
else which_part = which_pushed;
J1:
if (which_part != which_pushed)
{
Fl::remove_timeout(timeout_cb, this);
which_highlight = which_pushed = which_part;
redraw(FL_DAMAGE_HIGHLIGHT);
if (which_part)
{
Fl::add_timeout(INITIALREPEAT, timeout_cb, this);
increment_cb();
}
}
return 1;
case FL_RELEASE:
if (which_pushed == SLIDER)
{
Fl_Slider::handle(event, X,Y,W,H);
}
else if (which_pushed)
{
Fl::remove_timeout(timeout_cb, this);
handle_release();
redraw(FL_DAMAGE_HIGHLIGHT);
}
which_pushed = NOTHING;
return 1;
case FL_MOUSEWHEEL:
{
float n = (vertical() ? Fl::event_dy() : Fl::event_dx())
* Fl_Style::wheel_scroll_lines * linesize();
if (fabsf(n) > pagesize()) n = (n<0)?-pagesize():pagesize();
handle_drag(value()+n);
return 1;
}
case FL_KEY:
if (vertical()) switch(Fl::event_key())
{
case FL_Home: handle_drag(maximum()); return 1;
case FL_End: handle_drag(minimum()); return 1;
case FL_Page_Up: handle_drag(value()-pagesize()); return 1;
case FL_Page_Down: handle_drag(value()+pagesize()); return 1;
} // else fall through...
default:
return Fl_Slider::handle(event);
}
}
int Fl_Value_Input_Spin::handle(int event) {
double v;
int olddelta;
int mx = Fl::event_x();
int my = Fl::event_y();
int sxx = x(), syy = y(), sww = w(), shh = h();
sxx += sww - buttonssize(); sww = buttonssize();
if(!indrag && ( !sldrag || !((mx>=sxx && mx<=(sxx+sww)) &&
(my>=syy && my<=(syy+shh)))) ) {
indrag=0;
switch(event) {
case FL_PUSH:
case FL_DRAG:
sldrag=1;
break;
case FL_FOCUS:
input.take_focus();
break;
case FL_UNFOCUS:
redraw();
break;
default:
sldrag=0;
}
input.type(step()>=1.0 ? FL_INT_INPUT : FL_FLOAT_INPUT);
return input.handle(event);
}
switch (event) {
case FL_PUSH:
// if (!step()) goto DEFAULT;
iy = my;
ix = mx;
drag = Fl::event_button();
handle_push();
indrag=1;
mouseobj=1;
Fl::add_timeout(.5, repeat_callback, this);
delta=0;
if(Fl::event_inside(sxx,syy,sww,shh/2)) {
deltadir=1;
} else if (Fl::event_inside(sxx,syy+shh/2,sww,shh/2)) {
deltadir=-1;
} else {
deltadir=0;
}
increment_cb();
redraw();
return 1;
case FL_DRAG:
if(mouseobj) {
mouseobj=0;
Fl::remove_timeout(repeat_callback, this);
}
// if (!step()) goto DEFAULT;
olddelta=delta;
delta = - (Fl::event_y()-iy);
if ((delta>5) || (delta<-5) ) { deltadir=((olddelta-delta)>0)?-1:(((olddelta-delta)<0)?1:0); }
else { deltadir=0; delta = olddelta;}
switch (drag) {
case 3: v = increment(value(), deltadir*100); break;
case 2: v = increment(value(), deltadir*10); break;
default:v = increment(value(), deltadir); break;
}
v = round(v);
handle_drag(soft()?softclamp(v):clamp(v));
indrag=1;
return 1;
case FL_RELEASE:
if(mouseobj) {
Fl::remove_timeout(repeat_callback, this);
}
// if (!step()) goto DEFAULT;
indrag=0;
delta=0;
deltadir=0;
mouseobj=0;
handle_release();
redraw();
return 1;
case FL_FOCUS:
indrag=0;
return input.take_focus();
default:
indrag=0;
input.type(step()>=1.0 ? FL_INT_INPUT : FL_FLOAT_INPUT);
return 1;
}
}
int main(int argc, char* argv[]) {
int sockfd, oldsockfd, portno, n;
socklen_t clilen;
struct sockaddr_in serv_addr, cli_addr;
struct hostent *server;
pthread_t recv_thread;
Colormap map;
Display* display;
int screen_num;
Window win;
unsigned int display_width, display_height;
unsigned int width, height;
char *display_name = getenv("DISPLAY");
GC gc, his_gc, refresh_gc;
if(argc == 2) { // We are server
sending = 1;
if(argc < 2) {
fprintf(stderr,"ERROR, no port provided\n");
exit(1);
}
oldsockfd = socket(AF_INET, SOCK_STREAM, 0);
if(oldsockfd < 0) error("ERROR opening socket");
bzero((char *) &serv_addr, sizeof(serv_addr));
portno = atoi(argv[1]);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(portno);
int on = 1;
if(setsockopt(oldsockfd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)) < 0) error("ERROR on sockopt");
if(bind(oldsockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) error("ERROR on binding");
listen(oldsockfd,5);
clilen = sizeof(cli_addr);
sockfd = accept(oldsockfd, (struct sockaddr *) &cli_addr, &clilen);
if (sockfd < 0) error("ERROR on accept");
}
else if(argc == 3) { // We are client
sending = 1;
portno = atoi(argv[2]);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) error("ERROR opening socket");
server = gethostbyname(argv[1]);
if(server == NULL) {
fprintf(stderr,"ERROR, no such host\n");
exit(0);
}
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
bcopy((char *)(server->h_addr), (char *)(&serv_addr.sin_addr.s_addr), server->h_length);
serv_addr.sin_port = htons(portno);
if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0) error("ERROR connecting");
}
else {
server = 0;
}
display = XOpenDisplay(display_name);
if (display == NULL) {
fprintf(stderr, "%s: cannot connect to X server '%s'\n", argv[0], display_name);
exit(1);
}
screen_num = DefaultScreen(display);
display_width = DisplayWidth(display, screen_num);
display_height = DisplayHeight(display, screen_num);
width = (display_width / 3);
height = (display_height / 3);
Atom wm_delete;
win = create_simple_window(display, &wm_delete, width, height, 0, 0);
XGCValues values;
values.graphics_exposures = 0;
gc = create_gc(display, win);
his_gc = create_gc(display, win);
refresh_gc = XCreateGC(display, win, GCGraphicsExposures, &values);
XSetForeground(display, refresh_gc, WhitePixel(display, screen_num));
XSetBackground(display, refresh_gc, WhitePixel(display, screen_num));
map = DefaultColormap(display, 0);
XParseColor(display, map, "#FFFFFF", &cols[0]);
XAllocColor(display, map, &cols[0]);
XParseColor(display, map, "#000000", &cols[1]);
XAllocColor(display, map, &cols[1]);
XParseColor(display, map, "#FF0000", &cols[2]);
XAllocColor(display, map, &cols[2]);
XParseColor(display, map, "#00FF00", &cols[3]);
XAllocColor(display, map, &cols[3]);
XParseColor(display, map, "#0000FF", &cols[4]);
XAllocColor(display, map, &cols[4]);
XParseColor(display, map, "#FFFF00", &cols[5]);
XAllocColor(display, map, &cols[5]);
XParseColor(display, map, "#FF00FF", &cols[6]);
XAllocColor(display, map, &cols[6]);
XParseColor(display, map, "#00FFFF", &cols[7]);
XAllocColor(display, map, &cols[7]);
XParseColor(display, map, "#999999", &cols[8]);
XAllocColor(display, map, &cols[8]);
XParseColor(display, map, "#666666", &cols[9]);
XAllocColor(display, map, &cols[9]);
set_title(display, win);
back_buffer = XCreatePixmap(display, win, MAX_WIDTH, MAX_HEIGHT, DefaultDepth(display, screen_num));
XFillRectangle(display, back_buffer, refresh_gc, 0, 0, MAX_WIDTH, MAX_HEIGHT);
if(sending) {
recv_info_t info;
info.display = display;
info.window = win;
info.gc = gc;
info.his_gc = his_gc;
info.refresh_gc = refresh_gc;
info.sockfd = sockfd;
pthread_create(&recv_thread, NULL, recv_line, &info);
}
XSelectInput(display, win, ExposureMask | KeyPressMask | ButtonPressMask | Button1MotionMask | StructureNotifyMask);
XEvent an_event;
while(1) {
XNextEvent(display, &an_event);
switch(an_event.type) {
case ClientMessage:
if(an_event.xclient.data.l[0] == wm_delete) quitme(display, gc, his_gc, refresh_gc, sockfd, 0);
break;
case Expose:
handle_expose(display, refresh_gc, (XExposeEvent*)&an_event.xexpose);
break;
case ConfigureNotify:
width = an_event.xconfigure.width;
height = an_event.xconfigure.height;
break;
case ButtonPress:
handle_button_down(display, gc, (XButtonEvent*)&an_event.xbutton, width, height);
break;
case MotionNotify:
handle_drag(display, gc, (XButtonEvent*)&an_event.xbutton, width, height, sockfd);
break;
case KeyPress:
handle_key(display, win, gc, his_gc, refresh_gc, map, (XKeyEvent*)&an_event.xkey, sockfd);
break;
default:
break;
}
}
quitme(display, gc, his_gc, refresh_gc, sockfd, 0);
}
void
main(int argc, char* argv[])
{
Display* display; /* pointer to X Display structure. */
int screen_num; /* number of screen to place the window on. */
Window win; /* pointer to the newly created window. */
unsigned int display_width,
display_height; /* height and width of the X display. */
unsigned int width, height; /* height and width for the new window. */
char *display_name = getenv("DISPLAY"); /* address of the X display. */
GC gc, rev_gc; /* GC (graphics context) used for drawing */
/* in our window. */
short pixels[1000][1000]; /* used to store pixels on screen that were */
/* explicitly drawn or erased by the user. */
/* initialize the 'pixels' array to contain 0 values. */
{
int x, y;
for (x=0; x<1000; x++)
for (y=0; y<1000; y++)
pixels[x][y] = 0;
}
/* open connection with the X server. */
display = XOpenDisplay(display_name);
if (display == NULL) {
fprintf(stderr, "%s: cannot connect to X server '%s'\n",
argv[0], display_name);
exit(1);
}
/* get the geometry of the default screen for our display. */
screen_num = DefaultScreen(display);
display_width = DisplayWidth(display, screen_num);
display_height = DisplayHeight(display, screen_num);
/* make the new window occupy 1/9 of the screen's size. */
width = (display_width / 3);
height = (display_height / 3);
printf("window width - '%d'; height - '%d'\n", width, height);
/* create a simple window, as a direct child of the screen's */
/* root window. Use the screen's white color as the background */
/* color of the window. Place the new window's top-left corner */
/* at the given 'x,y' coordinates. */
win = create_simple_window(display, width, height, 0, 0);
/* allocate two new GCs (graphics contexts) for drawing in the window. */
/* the first is used for drawing black over white, the second is used */
/* for drawing white over black. */
gc = create_gc(display, win, 0);
rev_gc = create_gc(display, win, 1);
/* subscribe to the given set of event types. */
XSelectInput(display, win, ExposureMask | KeyPressMask |
ButtonPressMask | Button1MotionMask |
Button2MotionMask | Button3MotionMask | StructureNotifyMask);
/* perform an events loop */
{
int done = 0;
XEvent an_event;
while (!done) {
XNextEvent(display, &an_event);
switch (an_event.type) {
case Expose:
/* redraw our window. */
handle_expose(display, gc, rev_gc, (XExposeEvent*)&an_event.xexpose,
width, height, pixels);
break;
case ConfigureNotify:
/* update the size of our window, for expose events. */
width = an_event.xconfigure.width;
height = an_event.xconfigure.height;
break;
case ButtonPress:
/* invert the pixel under the mouse pointer. */
handle_button_down(display, gc, rev_gc,
(XButtonEvent*)&an_event.xbutton,
width, height, pixels);
break;
case MotionNotify:
/* invert the pixel under the mouse pointer. */
handle_drag(display, gc, rev_gc,
(XButtonEvent*)&an_event.xbutton,
width, height, pixels);
break;
case KeyPress:
/* exit the application by braking out of the events loop. */
done = 1;
break;
default: /* ignore any other event types. */
break;
} /* end switch on event type */
} /* end while events handling */
}
/* free the GCs. */
XFreeGC(display, gc);
XFreeGC(display, rev_gc);
/* close the connection to the X server. */
XCloseDisplay(display);
}
int Fl_Spin::handle(int event) {
double v;
int olddelta;
int mx = Fl::event_x();
int my = Fl::event_y();
int sxx = x(), syy = y(), sww = w(), shh = h();
switch (event) {
case FL_PUSH:
// if (!step()) goto DEFAULT;
iy = my;
ix = mx;
drag = Fl::event_button();
handle_push();
indrag=1;
mouseobj=1;
Fl::add_timeout(.5, repeat_callback, this);
delta=0;
if(Fl::event_inside(sxx,syy,sww,shh/2)) {
deltadir=1;
} else if (Fl::event_inside(sxx,syy+shh/2,sww,shh/2)) {
deltadir=-1;
} else {
deltadir=0;
}
increment_cb();
redraw();
return 1;
case FL_DRAG:
if(mouseobj) {
mouseobj=0;
Fl::remove_timeout(repeat_callback, this);
}
// if (!step()) goto DEFAULT;
olddelta=delta;
delta = - (Fl::event_y()-iy);
if ((delta>5) || (delta<-5) ) { deltadir=((olddelta-delta)>0)?-1:(((olddelta-delta)<0)?1:0); }
else { deltadir=0; delta = olddelta;}
switch (drag) {
case 3: v = increment(value(), deltadir*100); break;
case 2: v = increment(value(), deltadir*10); break;
default:v = increment(value(), deltadir); break;
}
v = round(v);
handle_drag(soft()?softclamp(v):clamp(v));
indrag=1;
return 1;
case FL_RELEASE:
if(mouseobj) {
Fl::remove_timeout(repeat_callback, this);
}
// if (!step()) goto DEFAULT;
indrag=0;
delta=0;
deltadir=0;
mouseobj=0;
handle_release();
redraw();
return 1;
default:
indrag=0;
return Fl_Valuator::handle(event);
}
}