Mercurial > sdl-ios-xcode
view test/testjoystick.c @ 1768:814f9f2c7a33
Fixed bug #80
Date: 21 Apr 2003 17:20:20 +0100
From: Alan Swanson <swanson@uklinux.net>
Subject: [SDL] New XFree 4.3 Video Mode Patch
If you look at the unsorted list of modes returned by X, here's mine;
1280 x 1024 @ 85.0 >
1024 x 768 @ 100.3 > USER
800 x 600 @ 125.5 > SET
640 x 480 @ 124.9 >
1280 x 1024 @ 75.0 ]
1280 x 1024 @ 60.0 ]
1280 x 960 @ 85.0 ] X11
1280 x 960 @ 60.0 ] AUTO
1152 x 864 @ 75.0 ]=20
1152 x 768 @ 54.8 ]
960 x 720 @ 120.0 ]
...
640 x 400 @ 85.1 ] 256k
576 x 432 @ 150.0 ] 249k PIXEL
640 x 350 @ 85.1 ] 224k COUNT
576 x 384 @ 109.6 ] 221k
...
The user set modes come first followed by X set modes which are ordered
by decreasing number of pixels and refresh.
The reason why every other library or program not using SDL working is
due to SDL scanning the modes in reverse getting X11 provided modes
modes with the lowest refresh.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 05 May 2006 05:50:26 +0000 |
parents | 74212992fb08 |
children | 281d3f4870e5 |
line wrap: on
line source
/* Simple program to test the SDL joystick routines */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "SDL.h" #define SCREEN_WIDTH 640 #define SCREEN_HEIGHT 480 void WatchJoystick(SDL_Joystick *joystick) { SDL_Surface *screen; const char *name; int i, done; SDL_Event event; int x, y, draw; SDL_Rect axis_area[2]; /* Set a video mode to display joystick axis position */ screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); if ( screen == NULL ) { fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError()); return; } /* Print info about the joystick we are watching */ name = SDL_JoystickName(SDL_JoystickIndex(joystick)); printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), name ? name : "Unknown Joystick"); printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick)); /* Initialize drawing rectangles */ memset(axis_area, 0, (sizeof axis_area)); draw = 0; /* Loop, getting joystick events! */ done = 0; while ( ! done ) { while ( SDL_PollEvent(&event) ) { switch (event.type) { case SDL_JOYAXISMOTION: printf("Joystick %d axis %d value: %d\n", event.jaxis.which, event.jaxis.axis, event.jaxis.value); break; case SDL_JOYHATMOTION: printf("Joystick %d hat %d value:", event.jhat.which, event.jhat.hat); if ( event.jhat.value == SDL_HAT_CENTERED ) printf(" centered"); if ( event.jhat.value & SDL_HAT_UP ) printf(" up"); if ( event.jhat.value & SDL_HAT_RIGHT ) printf(" right"); if ( event.jhat.value & SDL_HAT_DOWN ) printf(" down"); if ( event.jhat.value & SDL_HAT_LEFT ) printf(" left"); printf("\n"); break; case SDL_JOYBALLMOTION: printf("Joystick %d ball %d delta: (%d,%d)\n", event.jball.which, event.jball.ball, event.jball.xrel, event.jball.yrel); break; case SDL_JOYBUTTONDOWN: printf("Joystick %d button %d down\n", event.jbutton.which, event.jbutton.button); break; case SDL_JOYBUTTONUP: printf("Joystick %d button %d up\n", event.jbutton.which, event.jbutton.button); break; case SDL_KEYDOWN: if ( event.key.keysym.sym != SDLK_ESCAPE ) { break; } /* Fall through to signal quit */ case SDL_QUIT: done = 1; break; default: break; } } /* Update visual joystick state */ for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) { SDL_Rect area; area.x = i*34; area.y = SCREEN_HEIGHT-34; area.w = 32; area.h = 32; if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { SDL_FillRect(screen, &area, 0xFFFF); } else { SDL_FillRect(screen, &area, 0x0000); } SDL_UpdateRects(screen, 1, &area); } /* Erase previous axes */ SDL_FillRect(screen, &axis_area[draw], 0x0000); /* Draw the X/Y axis */ draw = !draw; x = (((int)SDL_JoystickGetAxis(joystick, 0))+32768); x *= SCREEN_WIDTH; x /= 65535; if ( x < 0 ) { x = 0; } else if ( x > (SCREEN_WIDTH-16) ) { x = SCREEN_WIDTH-16; } y = (((int)SDL_JoystickGetAxis(joystick, 1))+32768); y *= SCREEN_HEIGHT; y /= 65535; if ( y < 0 ) { y = 0; } else if ( y > (SCREEN_HEIGHT-16) ) { y = SCREEN_HEIGHT-16; } axis_area[draw].x = (Sint16)x; axis_area[draw].y = (Sint16)y; axis_area[draw].w = 16; axis_area[draw].h = 16; SDL_FillRect(screen, &axis_area[draw], 0xFFFF); SDL_UpdateRects(screen, 2, axis_area); } } int main(int argc, char *argv[]) { const char *name; int i; SDL_Joystick *joystick; /* Initialize SDL (Note: video is required to start event loop) */ if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); exit(1); } /* Print information about the joysticks */ printf("There are %d joysticks attached\n", SDL_NumJoysticks()); for ( i=0; i<SDL_NumJoysticks(); ++i ) { name = SDL_JoystickName(i); printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick"); } if ( argv[1] ) { joystick = SDL_JoystickOpen(atoi(argv[1])); if ( joystick == NULL ) { printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), SDL_GetError()); } else { WatchJoystick(joystick); SDL_JoystickClose(joystick); } } SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK); return(0); }