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/* This demo program just opens up a simple window and draws some things
* into it. It makes no pretensions about being sophisticated, but just
* gets the job done. You can use this as a framework for your own programs,
* just follow the comments, and you should be able to extend it as
* needed.
*
* NOTE:
* If you could care less about all the other stuff, and just want to write
* graphics code, simply edit the function redisplay() in callbacks.c and
* modify it to your desires. That is where all redrawing takes place.
*
* Dominic Giampaolo
* dbg@sgi.com
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
#include "libsx.h" /* should come first, defines libsx stuff */
#include "main.h" /* where program specific stuff is defined */
#include "callbacks.h" /* prototypes for callback functions */
/* define's */
#define X_SIZE 300 /* default draw area size, change as desired */
#define Y_SIZE 300
int main(int argc, char **argv)
{
MyProgram mydata;
mydata.var1 = 1; /* do your initializations here */
mydata.var2 = 2;
mydata.flags = 0;
init_display(argc, argv, &mydata); /* setup the display */
MainLoop(); /* go right into the main loop */
return 0;
}
/* This function sets up the display. For any kind of a real program,
* you'll probably want to save the values returned by the MakeXXX calls
* so that you have a way to refer to the display objects you have
* created (like if you have more than one drawing area, and want to
* draw into both of them).
*/
void init_display(int argc, char **argv, MyProgram *me)
{
Widget w[5];
if (OpenDisplay(argc, argv) == FALSE)
return;
w[0] = MakeButton("Load", load, me);
w[1] = MakeButton("Click Me", click_me, me);
w[2] = MakeButton("Quit!", quit, me);
w[3] = MakeLabel("This is a label");
w[4] = MakeDrawArea(X_SIZE, Y_SIZE, redisplay, me);
SetWidgetPos(w[1], PLACE_RIGHT, w[0], NO_CARE, NULL);
SetWidgetPos(w[2], PLACE_RIGHT, w[1], NO_CARE, NULL);
SetWidgetPos(w[3], PLACE_RIGHT, w[2], NO_CARE, NULL);
SetWidgetPos(w[4], PLACE_UNDER, w[0], NO_CARE, NULL);
/* This call actually causes the whole thing to be displayed on the
* screen. You have to call this function before doing any drawing
* into the window.
*/
ShowDisplay();
/* Get standard (red, blue, green, yellow, black, white) colors for
* drawing stuff.
*/
GetStandardColors();
}
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