Program_2_src.zip_open_sub window

//************************************************************************* // // File Name: SubWindow Template // Author : Ali Baderedine // // Description: SubWindow Template // //************************************************************************* #include <gl/glut.h> // Link the lib files to the program. This is not necessary // if you have added the lib names using Project/Settings/Link #pragma comment (lib, "opengl32.lib") #pragma comment (lib, "glut32.lib") #pragma comment (lib, "glu32.lib") // ***** Main Window Variables *****// #define GAP 25 /* gap between subwindows */ // define the window position on screen float main_window_x; float main_window_y; // variables representing the window size float main_window_w = 256 + GAP * 2; float main_window_h = 256 + 64 + GAP * 3; // variable representing the window title char *window_title = "SubWindow Template"; // ***** Sub Window 1 Variables *****// // define the window position on screen float subwindow1_x; float subwindow1_y; // variables representing the window size float subwindow1_w = 256; float subwindow1_h = 256; // ***** Sub Window 2 Variables *****// // define the window position on screen float subwindow2_x; float subwindow2_y; // variables representing the window size float subwindow2_w = 256; float subwindow2_h = 64; // ***** Main Window callback functions *****// void main_display (void); void main_reshape (int w, int h); // ***** SubWindow 1 callback functions *****// void subwindow1_display (void); // ***** SubWindow 2 callback functions *****// void subwindow2_display (void); // Redisplay all void redisplay_all (void); // A program with two subwindows int main_window, subwindow_1, subwindow_2; // Tells whether to display the window full screen or not int fullScreen = 0; // This function centers your window on the screen void centerOnScreen (void); // ***** Main Window callback functions *****// void main_reshape (int width, int height) { // Just take the case when the user tries // to make the size of the window very small... if (width < GAP * 4 || height < GAP * 6) { glutSetWindow (main_window); glutReshapeWindow (main_window_w, main_window_h); return; } glViewport(0, 0, width, height); // Change the subwindow dimensions as window dimensions change // Note (Keep up the ratio!) // main_window_w ---> subwindow1_w // main_window_w' (width) ---> ?? // ==> subwindow1_w = (subwindow1_w * (width-GAP*2.0))/(main_window_w-GAP*2.0); subwindow1_h = (subwindow1_h * (height-GAP*3.0))/(main_window_h-GAP*3.0); glutSetWindow (subwindow_1); glutPositionWindow (GAP, GAP); glutReshapeWindow (subwindow1_w, subwindow1_h); subwindow2_w = (subwindow2_w * (width-GAP*2.0))/(main_window_w-GAP*2.0); subwindow2_h = (subwindow2_h * (height-GAP*3.0))/(main_window_h-GAP*3.0); glutSetWindow (subwindow_2); glutPositionWindow (GAP, GAP+subwindow1_h+GAP); glutReshapeWindow (subwindow2_w, subwindow2_h); main_window_w = width; main_window_h = height; } void main_display (void) { glClearColor(0.0, 0.0, 0.0, 0.0); glClear(GL_COLOR_BUFFER_BIT); glutSwapBuffers(); } // ***** SubWindow 1 callback functions *****// void subwindow1_display (void) { glClearColor(0.0, 0.0, 1.0, 0.0); glClear(GL_COLOR_BUFFER_BIT); glColor3f (1, 1, 0); glutWireTeapot (0.5); glutSwapBuffers (); } // ***** SubWindow 2 callback functions *****// void subwindow2_display (void) { glClearColor(1.0, 1.0, 0.0, 0.0); glClear(GL_COLOR_BUFFER_BIT); glColor3f (0, 0, 1); glutWireTeapot (0.5); glutSwapBuffers (); } // Redisplay All void redisplay_all (void) { glutSetWindow(subwindow_1); glutPostRedisplay(); glutSetWindow(subwindow_2); glutPostRedisplay(); } void centerOnScreen (void) { // Set the window position such that the window becomes centered main_window_x = (glutGet (GLUT_SCREEN_WIDTH) - main_window_w)/2; main_window_y = (glutGet (GLUT_SCREEN_HEIGHT) - main_window_h)/2; } void main (int argc, char **argv) { centerOnScreen (); /**** Main Window *****/ glutInit(&argc, argv); glutInitWindowSize (main_window_w, main_window_h); glutInitWindowPosition (main_window_x, main_window_y); glutInitDisplayMode (GLUT_RGB | GLUT_DOUBLE); main_window = glutCreateWindow (window_title); glutReshapeFunc (main_reshape); glutDisplayFunc (main_display); // Subwindow 1 (Notice that x, y, w, h are just dummy values here // The reason is that they're gonna be reset in main_reshape // since the reshape function is called as the program starts. subwindow_1 = glutCreateSubWindow (main_window, 0, 0, 0, 0); glutDisplayFunc (subwindow1_display); /**** Subwindow 2 *****/ subwindow_2 = glutCreateSubWindow (main_window, 0,0 , 0, 0); glutDisplayFunc (subwindow2_display); if (fullScreen) glutFullScreen (); glutMainLoop(); }