fltk/test/fullscreen.cxx

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//
// "$Id: fullscreen.cxx,v 1.4.2.3 2001/01/22 15:13:41 easysw Exp $"
//
// Fullscreen test program for the Fast Light Tool Kit (FLTK).
//
// This demo shows how to do many of the window manipulations that
// are popular on SGI programs, even though X does not really like
// them. You can toggle the border on/off, change the visual to
// switch between single/double buffer, and make the window take
// over the screen.
//
// Normally the program makes a single window with a child GL window.
// This simulates a program where the 3D display is surrounded by
// control knobs. Running the program with an argument will
// make it make a seperate GL window from the controls window. This
// simulates a (older?) style program where the graphics display is
// a different window than the controls.
//
// This program reports how many times it redraws the window to
// stdout, so you can see how much time it is wasting. It appears
// to be impossible to prevent X from sending redundant resize
// events, so there are extra redraws. But the way I have the
// code arranged here seems to be keeping that to a minimu.
//
// Apparently unavoidable bugs:
//
// Turning the border on causes an unnecessary redraw.
//
// Turning off full screen when the border is on causes an unnecessary
// resize and redraw when the program turns the border on.
//
// If it is a seperate window, turning double buffering on and off
// will cause the window to raise, deiconize, and possibly move. You
// can avoid this by making the Fl_Gl_Window a child of a normal
// window.
//
// Copyright 1998-2001 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
#include <config.h>
#include <FL/Fl.H>
#include <FL/Fl_Single_Window.H>
#include <FL/Fl_Hor_Slider.H>
#include <FL/Fl_Toggle_Light_Button.H>
#include <FL/math.h>
#include <stdio.h>
#if HAVE_GL
#include <FL/gl.h>
#include <FL/Fl_Gl_Window.H>
class shape_window : public Fl_Gl_Window {
void draw();
public:
int sides;
shape_window(int x,int y,int w,int h,const char *l=0);
};
shape_window::shape_window(int x,int y,int w,int h,const char *l) :
Fl_Gl_Window(x,y,w,h,l) {
sides = 3;
}
void shape_window::draw() {
printf("drawing size %d %d\n",w(),h());
if (!valid()) {
valid(1);
// printf("init\n");
glLoadIdentity();
glViewport(0,0,w(),h());
}
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(.5,.6,.7);
glBegin(GL_POLYGON);
for (int i=0; i<sides; i++) {
double ang = i*2*M_PI/sides;
glVertex3f(cos(ang),sin(ang),0);
}
glEnd();
}
#else
#include <FL/fl_draw.H>
class shape_window : public Fl_Window {
void draw();
public:
int sides;
shape_window(int x,int y,int w,int h,const char *l=0);
};
shape_window::shape_window(int x,int y,int w,int h,const char *l) :
Fl_Window(x,y,w,h,l) {
sides = 3;
}
void shape_window::draw() {
fl_color(0);
fl_rectf(0,0,w(),h());
fl_font(0,20);
fl_color(7);
fl_draw("This requires GL",0,0,w(),h(),FL_ALIGN_CENTER);
}
#endif
void sides_cb(Fl_Widget *o, void *p) {
shape_window *sw = (shape_window *)p;
sw->sides = int(((Fl_Slider *)o)->value());
sw->redraw();
}
#if HAVE_GL
void double_cb(Fl_Widget *o, void *p) {
shape_window *sw = (shape_window *)p;
int d = ((Fl_Button *)o)->value();
sw->mode(d ? Fl_Mode(FL_DOUBLE|FL_RGB) : FL_RGB);
}
#else
void double_cb(Fl_Widget *, void *) {}
#endif
void border_cb(Fl_Widget *o, void *p) {
Fl_Window *w = (Fl_Window *)p;
int d = ((Fl_Button *)o)->value();
w->border(d);
}
int px,py,pw,ph;
Fl_Button *border_button;
void fullscreen_cb(Fl_Widget *o, void *p) {
Fl_Window *w = (Fl_Window *)p;
int d = ((Fl_Button *)o)->value();
if (d) {
px = w->x();
py = w->y();
pw = w->w();
ph = w->h();
w->fullscreen();
} else {
w->fullscreen_off(px,py,pw,ph);
}
}
#include <stdlib.h>
void exit_cb(Fl_Widget *, void *) {
exit(0);
}
#define NUMB 5
int twowindow = 0;
int initfull = 0;
int arg(int, char **argv, int &i) {
if (argv[i][1] == '2') {twowindow = 1; i++; return 1;}
if (argv[i][1] == 'f') {initfull = 1; i++; return 1;}
return 0;
}
int main(int argc, char **argv) {
int i=0;
if (Fl::args(argc,argv,i,arg) < argc)
Fl::fatal("Options are:\n -2 = 2 windows\n -f = startup fullscreen\n%s",Fl::help);
Fl_Single_Window window(300,300+30*NUMB); window.end();
shape_window sw(10,10,window.w()-20,window.h()-30*NUMB-20);
#if HAVE_GL
sw.mode(FL_RGB);
#endif
Fl_Window *w;
if (twowindow) { // make it's own window
sw.resizable(&sw);
w = &sw;
window.set_modal(); // makes controls stay on top when fullscreen pushed
argc--;
sw.show();
} else { // otherwise make a subwindow
window.add(sw);
window.resizable(&sw);
w = &window;
}
window.begin();
int y = window.h()-30*NUMB-5;
Fl_Hor_Slider slider(50,y,window.w()-60,30,"Sides:");
slider.align(FL_ALIGN_LEFT);
slider.callback(sides_cb,&sw);
slider.value(sw.sides);
slider.step(1);
slider.bounds(3,40);
y+=30;
Fl_Toggle_Light_Button b1(50,y,window.w()-60,30,"Double Buffered");
b1.callback(double_cb,&sw);
y+=30;
Fl_Toggle_Light_Button b2(50,y,window.w()-60,30,"Border");
b2.callback(border_cb,w);
b2.set();
border_button = &b2;
y+=30;
Fl_Toggle_Light_Button b3(50,y,window.w()-60,30,"FullScreen");
b3.callback(fullscreen_cb,w);
y+=30;
Fl_Button eb(50,y,window.w()-60,30,"Exit");
eb.callback(exit_cb);
y+=30;
if (initfull) {b3.set(); b3.do_callback();}
window.end();
window.show(argc,argv);
return Fl::run();
}
//
// End of "$Id: fullscreen.cxx,v 1.4.2.3 2001/01/22 15:13:41 easysw Exp $".
//