/* Test out the window manager interaction functions */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "SDL.h"

/* Is the cursor visible? */

static int visible = 1;

static Uint8 video_bpp;

static Uint32 video_flags;

/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */

static void quit(int rc)

{

SDL_Quit();

exit(rc);

}

int SetVideoMode(int w, int h)

{

SDL_Surface *screen;

int i;

Uint8 *buffer;

SDL_Color palette[256];

screen = SDL_SetVideoMode(w, h, video_bpp, video_flags);

if ( screen == NULL ) {

fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",

w, h, video_bpp, SDL_GetError());

return(-1);

}

printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?

"fullscreen" : "windowed");

/* Set the surface pixels and refresh! */

for ( i=0; i<256; ++i ) {

palette[i].r = 255-i;

palette[i].g = 255-i;

palette[i].b = 255-i;

}

SDL_SetColors(screen, palette, 0, 256);

if ( SDL_LockSurface(screen) < 0 ) {

fprintf(stderr, "Couldn't lock display surface: %s\n",

SDL_GetError());

return(-1);

}

buffer = (Uint8 *)screen->pixels;

for ( i=0; i<screen->h; ++i ) {

memset(buffer,(i*255)/screen->h,

screen->w*screen->format->BytesPerPixel);

buffer += screen->pitch;

}

SDL_UnlockSurface(screen);

SDL_UpdateRect(screen, 0, 0, 0, 0);

return(0);

}

SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)

{

SDL_Surface *icon;

Uint8 *pixels;

Uint8 *mask;

*maskp = NULL;

/* Load the icon surface */

icon = SDL_LoadBMP(file);

if ( icon == NULL ) {

fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());

return(NULL);

}

if ( (icon->w%8) != 0 ) {

fprintf(stderr, "Icon width must be a multiple of 8!\n");

SDL_FreeSurface(icon);

return(NULL);

}

*/

if ( icon->format->palette == NULL ) {

fprintf(stderr, "Icon must have a palette!\n");

SDL_FreeSurface(icon);

return(NULL);

}

/* Set the colorkey */

SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels));

/* Create the mask */

pixels = (Uint8 *)icon->pixels;

printf("Transparent pixel: (%d,%d,%d)\n",

icon->format->palette->colors[*pixels].r,

icon->format->palette->colors[*pixels].g,

icon->format->palette->colors[*pixels].b);

mlen = (icon->w*icon->h + 7) / 8;

mask = (Uint8 *)malloc(mlen);

if ( mask == NULL ) {

fprintf(stderr, "Out of memory!\n");

SDL_FreeSurface(icon);

return(NULL);

}

memset(mask, 0, mlen);

for ( i=0; i < icon->h; i++)

for (j=0; j < icon->w; j++) {

int pindex = i * icon->pitch + j;

int mindex = i * icon->w + j;

if ( pixels[pindex] != *pixels )

mask[mindex>>3] |= 1 << (7 - (mindex & 7));

}

*maskp = mask;

return(icon);

}

void HotKey_ToggleFullScreen(void)

{

SDL_Surface *screen;

screen = SDL_GetVideoSurface();

if ( SDL_WM_ToggleFullScreen(screen) ) {

printf("Toggled fullscreen mode - now %s\n",

(screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed");

} else {

printf("Unable to toggle fullscreen mode\n");

video_flags ^= SDL_FULLSCREEN;

SetVideoMode(screen->w, screen->h);

}

}

void HotKey_ToggleGrab(void)

{

SDL_GrabMode mode;

printf("Ctrl-G: toggling input grab!\n");

mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);

if ( mode == SDL_GRAB_ON ) {

printf("Grab was on\n");

} else {

printf("Grab was off\n");

}

if ( mode == SDL_GRAB_ON ) {

printf("Grab is now on\n");

} else {

printf("Grab is now off\n");

}

}

void HotKey_Iconify(void)

{

printf("Ctrl-Z: iconifying window!\n");

SDL_WM_IconifyWindow();

}

void HotKey_Quit(void)

{

SDL_Event event;

printf("Posting internal quit request\n");

event.type = SDL_USEREVENT;

SDL_PushEvent(&event);

}

int FilterEvents(const SDL_Event *event)

{

static int reallyquit = 0;

switch (event->type) {

case SDL_ACTIVEEVENT:

/* See what happened */

printf("App %s ",

event->active.gain ? "gained" : "lost");

if ( event->active.state & SDL_APPACTIVE )

printf("active ");

if ( event->active.state & SDL_APPMOUSEFOCUS )

printf("mouse ");

if ( event->active.state & SDL_APPINPUTFOCUS )

printf("input ");

printf("focus\n");

/* See if we are iconified or restored */

if ( event->active.state & SDL_APPACTIVE ) {

printf("App has been %s\n",

event->active.gain ?

"restored" : "iconified");

}

return(0);

/* We want to toggle visibility on buttonpress */

case SDL_MOUSEBUTTONDOWN:

case SDL_MOUSEBUTTONUP:

if ( event->button.state == SDL_PRESSED ) {

visible = !visible;

SDL_ShowCursor(visible);

}

printf("Mouse button %d has been %s\n",

event->button.button,

(event->button.state == SDL_PRESSED) ?

"pressed" : "released");

return(0);

/* Show relative mouse motion */

case SDL_MOUSEMOTION:

#if 0

printf("Mouse motion: {%d,%d} (%d,%d)\n",

event->motion.x, event->motion.y,

event->motion.xrel, event->motion.yrel);

#endif

return(0);

case SDL_KEYDOWN:

if ( event->key.keysym.sym == SDLK_ESCAPE ) {

HotKey_Quit();

}

if ( (event->key.keysym.sym == SDLK_g) &&

(event->key.keysym.mod & KMOD_CTRL) ) {

HotKey_ToggleGrab();

}

if ( (event->key.keysym.sym == SDLK_z) &&

(event->key.keysym.mod & KMOD_CTRL) ) {

HotKey_Iconify();

}

if ( (event->key.keysym.sym == SDLK_RETURN) &&

(event->key.keysym.mod & KMOD_ALT) ) {

HotKey_ToggleFullScreen();

}

return(0);

/* Pass the video resize event through .. */

case SDL_VIDEORESIZE:

return(1);

/* This is important! Queue it if we want to quit. */

case SDL_QUIT:

if ( ! reallyquit ) {

reallyquit = 1;

printf("Quit requested\n");

return(0);

}

printf("Quit demanded\n");

return(1);

/* This will never happen because events queued directly

to the event queue are not filtered.

*/

case SDL_USEREVENT:

return(1);

/* Drop all other events */

default:

return(0);

}

}

int main(int argc, char *argv[])

{

SDL_Event event;

char *title;

SDL_Surface *icon;

Uint8 *icon_mask;

int parsed;

if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {

fprintf(stderr,

"Couldn't initialize SDL: %s\n", SDL_GetError());

}

/* Check command line arguments */

w = 640;

h = 480;

video_bpp = 8;

video_flags = SDL_SWSURFACE;

parsed = 1;

while ( parsed ) {

if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) {

video_flags |= SDL_FULLSCREEN;

argc -= 1;

argv += 1;

} else

if ( (argc >= 2) && (strcmp(argv[1], "-resize") == 0) ) {

video_flags |= SDL_RESIZABLE;

argc -= 1;

argv += 1;

} else

if ( (argc >= 2) && (strcmp(argv[1], "-noframe") == 0) ) {

video_flags |= SDL_NOFRAME;

argc -= 1;

argv += 1;

} else

if ( (argc >= 3) && (strcmp(argv[1], "-width") == 0) ) {

w = atoi(argv[2]);

argc -= 2;

argv += 2;

} else

if ( (argc >= 3) && (strcmp(argv[1], "-height") == 0) ) {

h = atoi(argv[2]);

argc -= 2;

argv += 2;

} else

if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) {

video_bpp = atoi(argv[2]);

argc -= 2;

argv += 2;

} else {

parsed = 0;

}

}

/* Set the icon -- this must be done before the first mode set */

icon = LoadIconSurface("icon.bmp", &icon_mask);

if ( icon != NULL ) {

SDL_WM_SetIcon(icon, icon_mask);

}

if ( icon_mask != NULL )

free(icon_mask);

/* Set the title bar */

if ( argv[1] == NULL )

title = "Testing 1.. 2.. 3...";

else

title = argv[1];

SDL_WM_SetCaption(title, "testwm");

/* See if it's really set */

SDL_WM_GetCaption(&title, NULL);

if ( title )

printf("Title was set to: %s\n", title);

else

printf("No window title was set!\n");

/* Initialize the display */

}

/* Set an event filter that discards everything but QUIT */

SDL_SetEventFilter(FilterEvents);

/* Ignore key up events, they don't even get filtered */

SDL_EventState(SDL_KEYUP, SDL_IGNORE);

/* Loop, waiting for QUIT */

while ( SDL_WaitEvent(&event) ) {

switch (event.type) {

case SDL_VIDEORESIZE:

printf("Got a resize event: %dx%d\n",

event.resize.w, event.resize.h);

SetVideoMode(event.resize.w, event.resize.h);

break;

case SDL_USEREVENT:

printf("Handling internal quit request\n");

/* Fall through to the quit handler */

case SDL_QUIT:

printf("Bye bye..\n");

default:

/* This should never happen */

printf("Warning: Event %d wasn't filtered\n",

event.type);

break;

}

}

printf("SDL_WaitEvent() error: %s\n", SDL_GetError());

return(255);

}