dfb-photoshow.c

   1 /*
   2  * dfb-photoshow.c
   3  *
   4  * author: hackbard
   5  *
   6  */
   7
   8 #include <stdio.h>
   9 #include <unistd.h>
  10 #include <stdlib.h>
  11 #include <directfb.h>
  12
  13 IDirectFB *dfb = NULL;
  14 IDirectFBSurface *primary = NULL;
  15 int screen_width  = 0;
  16 int screen_height = 0;
  17
  18 #define DFBCHECK(x...) \
  19 { \
  20  DFBResult err=x; \
  21  if(err!=DFB_OK) { \
  22   fprintf(stderr,"file: %s , line: %d !\n\t",__FILE__,__LINE__); \
  23   DirectFBErrorFatal( #x, err ); \
  24  } \
  25 }
  26
  27 IDirectFBSurface *logo = NULL;
  28 IDirectFBFont *font = NULL;
  29 char *title_txt = "directfb photoshow";
  30 char *author_txt="hackbard@hackdaworld.dyndns.org";
  31 char *hp_txt="http://hackdaworld.dyndns.org";
  32 char *msg1_txt="(press return to continue ...)";
  33
  34 void clear_primary(void) {
  35  DFBCHECK(primary->SetColor(primary,0x00,0x00,0x00,0x00));
  36  DFBCHECK(primary->FillRectangle(primary,0,0,screen_width,screen_height));
  37 }
  38
  39 int main(int argc,char **argv) {
  40  int i,str_width;
  41  DFBSurfaceDescription dsc;
  42  DFBFontDescription font_dsc;
  43  IDirectFBImageProvider *img_prov;
  44
  45  DFBCHECK(DirectFBInit (&argc, &argv));
  46
  47  DFBCHECK(DirectFBCreate(&dfb));
  48  DFBCHECK(dfb->SetCooperativeLevel(dfb,DFSCL_FULLSCREEN));
  49
  50  dsc.flags=DSDESC_CAPS;
  51  dsc.caps=DSCAPS_PRIMARY|DSCAPS_FLIPPING;
  52  DFBCHECK(dfb->CreateSurface(dfb,&dsc,&primary));
  53
  54  DFBCHECK(primary->GetSize(primary,&screen_width,&screen_height));
  55  fprintf(stdout,"dimensions: %dx%d\n",screen_width,screen_height);
  56
  57  /* title */
  58  font_dsc.flags=DFDESC_HEIGHT;
  59  font_dsc.height=screen_height/20;
  60  DFBCHECK(dfb->CreateFont(dfb,"/usr/share/DFBSee/decker.ttf",&font_dsc,&font));
  61  DFBCHECK(primary->SetFont(primary,font));
  62  DFBCHECK(font->GetStringWidth(font,title_txt,-1,&str_width));
  63  clear_primary();
  64  DFBCHECK(primary->SetColor(primary,0x80,0x80,0xff,0xff));
  65  DFBCHECK(primary->DrawString(primary,title_txt,-1,(screen_width-str_width)/2,screen_height/4,DSTF_LEFT));
  66  /* author,homepage,msg */
  67  font_dsc.height=screen_height/40;
  68  DFBCHECK(dfb->CreateFont(dfb,"/usr/share/DFBSee/decker.ttf",&font_dsc,&font));
  69  DFBCHECK(primary->SetFont(primary,font));
  70  DFBCHECK(font->GetStringWidth(font,author_txt,-1,&str_width));
  71  DFBCHECK(primary->DrawString(primary,author_txt,-1,(screen_width-str_width)/2,screen_height/2,DSTF_LEFT));
  72  DFBCHECK(font->GetStringWidth(font,hp_txt,-1,&str_width));
  73  DFBCHECK(primary->DrawString(primary,hp_txt,-1,(screen_width-str_width)/2,(screen_height/2)+font_dsc.height,DSTF_LEFT));
  74  DFBCHECK(font->GetStringWidth(font,msg1_txt,-1,&str_width));
  75  DFBCHECK(primary->DrawString(primary,msg1_txt,-1,(screen_width-str_width)/2,(screen_height/2)+3*font_dsc.height,DSTF_LEFT));
  76  DFBCHECK(primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC));
  77  getc(stdin);
  78  font->Release(font);
  79
  80  /* display pictures */
  81  for(i=2;i<argc;i++) {
  82   DFBCHECK(dfb->CreateImageProvider(dfb,argv[i],&img_prov));
  83   DFBCHECK(img_prov->GetSurfaceDescription(img_prov,&dsc));
  84   DFBCHECK(dfb->CreateSurface(dfb,&dsc,&logo ));
  85   DFBCHECK(img_prov->RenderTo(img_prov,logo,NULL));
  86   img_prov->Release(img_prov);
  87   DFBCHECK (primary->SetColor(primary,0x00,0x00,0x00,0x00));
  88   DFBCHECK(primary->FillRectangle(primary,0,0,screen_width,screen_height));
  89   DFBCHECK(primary->SetColor(primary,0x80,0x80,0xff,0xff));
  90   DFBCHECK(primary->DrawLine(primary,0,0,screen_width-1,screen_height-1));
  91   if((screen_width>=dsc.width)&&(screen_height>=dsc.height)) {
  92    DFBCHECK(primary->Blit(primary,logo,NULL,(screen_width-dsc.width)/2,(screen_height-dsc.height)/2));
  93   }
  94   else {
  95    DFBCHECK(primary->StretchBlit(primary,logo,NULL,NULL));
  96   }
  97   DFBCHECK(primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC));
  98   sleep(atoi(argv[1]));
  99   logo->Release(logo);
 100  }
 101
 102  primary->Release(logo);
 103  primary->Release(primary);
 104  dfb->Release(dfb);
 105
 106  return 23; /* ;) */
 107 }
 108