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/* Copyright (c) Mark J. Kilgard, 1994. */
/* This program is freely distributable without licensing fees
and is provided without guarantee or warrantee expressed or
implied. This program is -not- in the public domain. */
#include <GL/glut.h>
#include <stdio.h>
#define GAP 10
int main_w, w1, w2, w3, w4;
void
display(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glFlush();
}
void
vis(int visState)
{
printf("VIS: win=%d, v=%d\n", glutGetWindow(), visState);
}
void
reshape(int w, int h)
{
int width = 50;
int height = 50;
glViewport(0, 0, w, h);
if (w > 50) {
width = (w - 3 * GAP) / 2;
} else {
width = 10;
}
if (h > 50) {
height = (h - 3 * GAP) / 2;
} else {
height = 10;
}
glutSetWindow(w1);
glutPositionWindow(GAP, GAP);
glutReshapeWindow(width, height);
glutSetWindow(w2);
glutPositionWindow(GAP + width + GAP, GAP);
glutReshapeWindow(width, height);
glutSetWindow(w3);
glutPositionWindow(GAP, GAP + height + GAP);
glutReshapeWindow(width, height);
glutSetWindow(w4);
glutPositionWindow(GAP + width + GAP, GAP + height + GAP);
glutReshapeWindow(width, height);
}
int
main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB);
glutInitWindowSize(210, 210);
main_w = glutCreateWindow("4 subwindows");
glutDisplayFunc(display);
glutVisibilityFunc(vis);
glutReshapeFunc(reshape);
glClearColor(1.0, 1.0, 1.0, 1.0);
w1 = glutCreateSubWindow(main_w, 10, 10, 90, 90);
glutDisplayFunc(display);
glutVisibilityFunc(vis);
glClearColor(1.0, 0.0, 0.0, 1.0);
w2 = glutCreateSubWindow(main_w, 110, 10, 90, 90);
glutDisplayFunc(display);
glutVisibilityFunc(vis);
glClearColor(0.0, 1.0, 0.0, 1.0);
w3 = glutCreateSubWindow(main_w, 10, 110, 90, 90);
glutDisplayFunc(display);
glutVisibilityFunc(vis);
glClearColor(0.0, 0.0, 1.0, 1.0);
w4 = glutCreateSubWindow(main_w, 110, 110, 90, 90);
glutDisplayFunc(display);
glutVisibilityFunc(vis);
glClearColor(1.0, 1.0, 0.0, 1.0);
glutMainLoop();
return 0; /* ANSI C requires main to return int. */
}
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