1,125 → 1,22 |
/* |
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Makefile in this folder |
-- maxcodehack |
*/ |
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/* Simple program: Test bitmap blits */ |
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#include <stdio.h> |
#include "SDL.h" |
#include <stdlib.h> |
#include <string.h> |
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// We can use Newlib functions with Menuetlibc library SDL! |
#include <kos32sys.h> |
SDL_Surface* screen; |
static int done = 0; |
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#include "SDL.h" |
#include "picture.xbm" |
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SDL_Surface *LoadXBM(SDL_Surface *screen, int w, int h, Uint8 *bits) |
int main() |
{ |
SDL_Surface *bitmap; |
Uint8 *line; |
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/* Allocate the bitmap */ |
bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0); |
if ( bitmap == NULL ) { |
fprintf(stderr, "Couldn't allocate bitmap: %s\n", |
SDL_GetError()); |
return(NULL); |
} |
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/* Copy the pixels */ |
line = (Uint8 *)bitmap->pixels; |
w = (w+7)/8; |
while ( h-- ) { |
memcpy(line, bits, w); |
/* X11 Bitmap images have the bits reversed */ |
{ int i, j; Uint8 *buf, byte; |
for ( buf=line, i=0; i<w; ++i, ++buf ) { |
byte = *buf; |
*buf = 0; |
for ( j=7; j>=0; --j ) { |
*buf |= (byte&0x01)<<j; |
byte >>= 1; |
} |
} |
} |
line += bitmap->pitch; |
bits += w; |
} |
return(bitmap); |
} |
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int main(int argc, char *argv[]) |
{ |
SDL_Surface *screen; |
SDL_Surface *bitmap; |
Uint8 video_bpp; |
Uint32 videoflags; |
Uint8 *buffer; |
int i, done; |
SDL_Event event; |
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/* Initialize SDL */ |
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { |
fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); |
exit(1); |
} |
if(SDL_Init(SDL_INIT_VIDEO) < 0) exit(0); |
atexit(SDL_Quit); |
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video_bpp = 0; |
videoflags = SDL_SWSURFACE; |
/* Set 640x480 video mode */ |
if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) { |
fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", |
video_bpp, SDL_GetError()); |
exit(2); |
} |
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/* Set the surface pixels and refresh! */ |
if ( SDL_LockSurface(screen) < 0 ) { |
fprintf(stderr, "Couldn't lock the display surface: %s\n", |
SDL_GetError()); |
exit(2); |
} |
buffer=(Uint8 *)screen->pixels; |
for ( i=0; i<screen->h; ++i ) { |
memset(buffer,(i*255)/screen->h, screen->pitch); |
buffer += screen->pitch; |
} |
SDL_UnlockSurface(screen); |
SDL_UpdateRect(screen, 0, 0, 0, 0); |
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/* Load the bitmap */ |
bitmap = LoadXBM(screen, picture_width, picture_height, |
(Uint8 *)picture_bits); |
if ( bitmap == NULL ) { |
exit(1); |
} |
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/* Wait for a keystroke */ |
done = 0; |
while ( !done ) { |
/* Check for events */ |
while ( SDL_PollEvent(&event) ) { |
switch (event.type) { |
case SDL_MOUSEBUTTONDOWN: { |
SDL_Rect dst; |
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dst.x = event.button.x - bitmap->w/2; |
dst.y = event.button.y - bitmap->h/2; |
dst.w = bitmap->w; |
dst.h = bitmap->h; |
SDL_BlitSurface(bitmap, NULL, |
screen, &dst); |
SDL_UpdateRects(screen,1,&dst); |
} |
break; |
screen = SDL_SetVideoMode(320, 200, 8, SDL_SWSURFACE); |
while (!done) |
{ |
while (SDL_PollEvent(&event)) |
{ |
switch (event.type) |
{ |
case SDL_KEYDOWN: |
/* Any key press quits the app... */ |
done = 1; |
break; |
case SDL_QUIT: |
done = 1; |
break; |
126,13 → 23,6 |
default: |
break; |
} |
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// We can use Newlib functions with Menuetlibc library SDL! |
// For example: |
draw_bar(10, 10, 50, 50, 0xFFFFFF); |
} |
} |
SDL_FreeSurface(bitmap); |
SDL_Quit(); |
return 0; |
} |