* Creation date: czw gru 2 11:58:41 CET 1999
*/
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
#include <stdio.h>
#include <stdlib.h>
int g_LeaveGameMode = 0;
int g_InGameMode = 0;
+int g_mainwin1, g_mainwin2, g_sw1, g_sw2, g_gamemodewin;
/*
* Call this function to have some text drawn at given coordinates
/*
* This is the display routine for our sample FreeGLUT windows
*/
-static float g_fTime = 0.0f;
-
void SampleDisplay( void )
{
- /*
- * Clear the screen
- */
- glClearColor( 0, 0.5, 1, 1 );
- glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
-
- /*
- * Have the cube rotated
- */
- glMatrixMode( GL_MODELVIEW );
- glPushMatrix();
-
- glRotatef( g_fTime, 0, 0, 1 );
- glRotatef( g_fTime, 0, 1, 0 );
- glRotatef( g_fTime, 1, 0, 0 );
-
- /*
- * And then drawn...
- */
- glColor3f( 1, 1, 0 );
- /* glutWireCube( 20.0 ); */
- glutWireTeapot( 20.0 );
- /* glutWireSpher( 15.0, 15, 15 ); */
- /* glColor3f( 0, 1, 0 ); */
- /* glutWireCube( 30.0 ); */
- /* glutSolidCone( 10, 20, 10, 2 ); */
+ int win = glutGetWindow();
- /*
- * Don't forget about the model-view matrix
- */
- glPopMatrix( );
+ if (g_InGameMode && win!=g_gamemodewin)
+ /* Don't draw other windows when in gamemode, those aren't visible
+ * anyway. Drawing them continuously nonetheless can cause flicker trouble
+ * on my machine. This only seems to occur only when there are child windows
+ * among the non-visible windows
+ */
+ return;
- /*
- * Draw a silly text
- */
- if( g_InGameMode == 0 )
- PrintText( 20, 20, "Hello there cruel world!" );
+ if (win==g_sw1)
+ {
+ /*
+ * Clear the screen
+ */
+ glClearColor(0.7f,0.7f,0.7f,1);
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+ glutPostWindowRedisplay(g_mainwin2);
+ }
+ else if (win==g_sw2)
+ {
+ /*
+ * Clear the screen
+ */
+ glClearColor(0.3f,0.3f,0.3f,1);
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+ glutPostWindowRedisplay(g_mainwin2);
+ }
else
- PrintText( 20, 20, "Press ESC to leave the game mode!" );
+ {
+ const GLfloat time = glutGet(GLUT_ELAPSED_TIME) / 1000.f * 40;
+
+ /*
+ * Clear the screen
+ */
+ glClearColor( 0, 0.5, 1, 1 );
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ /*
+ * Have the cube rotated
+ */
+ glMatrixMode( GL_MODELVIEW );
+ glPushMatrix();
+
+ glRotatef( time, 0, 0, 1 );
+ glRotatef( time, 0, 1, 0 );
+ glRotatef( time, 1, 0, 0 );
+
+ /*
+ * And then drawn...
+ */
+ glColor3f( 1, 1, 0 );
+ /* glutWireCube( 20.0 ); */
+ glutWireTeapot( 20.0 );
+ /* glutWireSphere( 15.0, 15, 15 ); */
+ /* glColor3f( 0, 1, 0 ); */
+ /* glutWireCube( 30.0 ); */
+ /* glutSolidCone( 10, 20, 10, 2 ); */
+
+ /*
+ * Don't forget about the model-view matrix
+ */
+ glPopMatrix( );
+
+ /*
+ * Draw a silly text
+ */
+ if( g_InGameMode == 0 )
+ PrintText( 20, 20, "Hello there cruel world!" );
+ else
+ PrintText( 20, 20, "Press ESC to leave the game mode!" );
+ }
/*
* And swap this context's buffers
*/
glutSwapBuffers( );
+ glutPostWindowRedisplay(win);
}
/*
*/
void SampleIdle( void )
{
- g_fTime += 0.5f;
-
if( g_LeaveGameMode == 1 )
{
+ /* One could do all this just as well in SampleGameModeKeyboard... */
+ printf("leaving gamemode...\n");
glutLeaveGameMode( );
g_LeaveGameMode = 0;
g_InGameMode = 0;
+ glutPostWindowRedisplay(g_mainwin1);
+ glutPostWindowRedisplay(g_mainwin2);
+ glutPostWindowRedisplay(g_sw1);
+ glutPostWindowRedisplay(g_sw2);
}
}
+void SampleEntry(int state)
+{
+ int window = glutGetWindow () ;
+ printf ( "Window %d Entry Callback: %d\n", window, state ) ;
+}
+
/*
* The reshape function
*/
*/
void SampleMenu( int menuID )
{
- /*
- * Just print something funny
- */
printf( "SampleMenu() callback executed, menuID is %i\n", menuID );
}
/*
+ * A sample menu status callback
+ */
+void SampleMenuStatus( int status, int x, int y )
+{
+ printf ( "SampleMenu() callback executed, MenuStatus is %i at (%i,%i)\n", status, x, y );
+}
+
+/*
* The sample's entry point
*/
int main( int argc, char** argv )
glutInit( &argc, argv );
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_GLUTMAINLOOP_RETURNS);
+ glutMenuStatusFunc( SampleMenuStatus );
+ glutIdleFunc( SampleIdle );
subMenuA = glutCreateMenu( SampleMenu );
glutAddMenuEntry( "Sub menu A1 (01)", 1 );
glutAddSubMenu( "Enter sub menu A", subMenuA );
glutAddSubMenu( "Enter sub menu B", subMenuB );
- glutCreateWindow( "Hello world!" );
+ g_mainwin1 = glutCreateWindow( "Hello world!" );
glutDisplayFunc( SampleDisplay );
glutReshapeFunc( SampleReshape );
glutKeyboardFunc( SampleKeyboard );
glutSpecialFunc( SampleSpecial );
- glutIdleFunc( SampleIdle );
+ glutEntryFunc( SampleEntry );
glutAttachMenu( GLUT_LEFT_BUTTON );
glutInitWindowPosition( 200, 200 );
- glutCreateWindow( "I am not Jan B." );
+ g_mainwin2 = glutCreateWindow( "I am not Jan B." );
glutDisplayFunc( SampleDisplay );
glutReshapeFunc( SampleReshape );
glutKeyboardFunc( SampleKeyboard );
glutSpecialFunc( SampleSpecial );
- glutIdleFunc( SampleIdle );
+ glutEntryFunc( SampleEntry );
glutAttachMenu( GLUT_LEFT_BUTTON );
glutSetMenu(subMenuA);
- glutAttachMenu( GLUT_RIGHT_BUTTON);
+ glutAttachMenu( GLUT_RIGHT_BUTTON );
+
+ g_sw1=glutCreateSubWindow(g_mainwin2,200,0,100,100);
+ glutDisplayFunc( SampleDisplay );
+ glutSetMenu(subMenuB);
+ glutAttachMenu( GLUT_LEFT_BUTTON );
+
+ g_sw2=glutCreateSubWindow(g_sw1,50,0,50,50);
+ glutDisplayFunc( SampleDisplay );
+ glutSetMenu(menuID);
+ glutAttachMenu( GLUT_RIGHT_BUTTON );
printf( "Testing game mode string parsing, don't panic!\n" );
glutGameModeString( "320x240:32@100" );
glutEnterGameMode();
glutGameModeString( "800x600" ); /* this one is likely to succeed */
- glutEnterGameMode();
+ g_gamemodewin = glutEnterGameMode();
if (glutGameModeGet(GLUT_GAME_MODE_ACTIVE))
g_InGameMode = 1;
glutDisplayFunc( SampleDisplay );
glutReshapeFunc( SampleReshape );
glutKeyboardFunc( SampleGameModeKeyboard );
- glutIdleFunc( SampleIdle );
+ glutEntryFunc( SampleEntry );
+ glutSetMenu(menuID);
+ glutAttachMenu( GLUT_LEFT_BUTTON );
printf( "current window is %ix%i at (%i,%i)\n",
glutGet( GLUT_WINDOW_WIDTH ), glutGet( GLUT_WINDOW_HEIGHT ),
);
/*
+ * Describe pixel format
+ */
+ printf("The current window has %i red bits, %i green bits, %i blue bits and %i alpha bits for a total buffer size of %i bits\n",glutGet(GLUT_WINDOW_RED_SIZE),glutGet(GLUT_WINDOW_GREEN_SIZE),glutGet(GLUT_WINDOW_BLUE_SIZE),glutGet(GLUT_WINDOW_ALPHA_SIZE),glutGet(GLUT_WINDOW_BUFFER_SIZE));
+ printf("It furthermore has %i depth bits and %i stencil bits\n",glutGet(GLUT_WINDOW_DEPTH_SIZE),glutGet(GLUT_WINDOW_STENCIL_SIZE));
+
+ /*
* Enter the main FreeGLUT processing loop
*/
glutMainLoop();
- printf( "glutMainLoop() termination works fine!\n" );
-
/*
- * This is never reached in FreeGLUT. Is that good?
+ * returned from mainloop after window closed
+ * see glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_GLUTMAINLOOP_RETURNS); above
*/
+ printf( "glutMainLoop() termination works fine!\n" );
+
return EXIT_SUCCESS;
}
-/*** END OF FILE ***/
\ No newline at end of file
+/*** END OF FILE ***/
projects / freeglut / blobdiff