dfb-photoshow.c

   1 /*
   2  * dfb-photoshow.c
   3  *
   4  * build: gcc -o dfb-photoshow -O3 -Wall -I/usr/X11/include \
   5  *        -I/usr/include/directfb dfb-photoshow.c
   6  * usage: ./showdir <seconds> <directory>
   7  *
   8  * author:
   9  * hackbard@hackdaworld.dyndns.org
  10  * download:
  11  * cvs -d:pserver:anonymous@hackdaworld.dyndns.org:/my-code co dfb-photoshow
  12  *
  13  */
  14
  15 #include <stdio.h>
  16 #include <unistd.h>
  17 #include <stdlib.h>
  18 #include <directfb.h>
  19
  20 IDirectFB *dfb = NULL;
  21 IDirectFBSurface *primary = NULL;
  22 int screen_width  = 0;
  23 int screen_height = 0;
  24
  25 #define DFBCHECK(x...) \
  26 { \
  27  DFBResult err=x; \
  28  if(err!=DFB_OK) { \
  29   fprintf(stderr,"file: %s , line: %d !\n\t",__FILE__,__LINE__); \
  30   DirectFBErrorFatal( #x, err ); \
  31  } \
  32 }
  33
  34 IDirectFBInputDevice *keyboard=NULL;
  35 IDirectFBSurface *logo=NULL;
  36 IDirectFBFont *font=NULL;
  37 char *title_txt="directfb photoshow";
  38 char *author_txt="hackbard@hackdaworld.dyndns.org";
  39 char *hp_txt="http://hackdaworld.dyndns.org";
  40 char *msg1_txt="(press return to continue ...)";
  41
  42 void clear_primary(void) {
  43  DFBCHECK(primary->SetColor(primary,0x00,0x00,0x00,0x00));
  44  DFBCHECK(primary->FillRectangle(primary,0,0,screen_width,screen_height));
  45 }
  46
  47 int main(int argc,char **argv) {
  48  int i,str_width;
  49  DFBInputDeviceKeyState state_enter=DIKS_UP;
  50  DFBInputDeviceKeyState state_escape=DIKS_UP;
  51  DFBSurfaceDescription dsc;
  52  DFBFontDescription font_dsc;
  53  IDirectFBImageProvider *img_prov;
  54
  55  DFBCHECK(DirectFBInit (&argc, &argv));
  56
  57  DFBCHECK(DirectFBCreate(&dfb));
  58  DFBCHECK(dfb->SetCooperativeLevel(dfb,DFSCL_FULLSCREEN));
  59
  60  dsc.flags=DSDESC_CAPS;
  61  dsc.caps=DSCAPS_PRIMARY|DSCAPS_FLIPPING;
  62  DFBCHECK(dfb->CreateSurface(dfb,&dsc,&primary));
  63
  64  DFBCHECK(primary->GetSize(primary,&screen_width,&screen_height));
  65  fprintf(stdout,"dimensions: %dx%d\n",screen_width,screen_height);
  66
  67  DFBCHECK(dfb->GetInputDevice(dfb,DIDID_KEYBOARD,&keyboard));
  68
  69  /* title */
  70  font_dsc.flags=DFDESC_HEIGHT;
  71  font_dsc.height=screen_height/20;
  72  DFBCHECK(dfb->CreateFont(dfb,"/usr/share/DFBSee/decker.ttf",&font_dsc,&font));
  73  DFBCHECK(primary->SetFont(primary,font));
  74  DFBCHECK(font->GetStringWidth(font,title_txt,-1,&str_width));
  75  clear_primary();
  76  DFBCHECK(primary->SetColor(primary,0x80,0x80,0xff,0xff));
  77  DFBCHECK(primary->DrawString(primary,title_txt,-1,(screen_width-str_width)/2,screen_height/4,DSTF_LEFT));
  78  /* author,homepage,msg */
  79  font_dsc.height=screen_height/40;
  80  DFBCHECK(dfb->CreateFont(dfb,"/usr/share/DFBSee/decker.ttf",&font_dsc,&font));
  81  DFBCHECK(primary->SetFont(primary,font));
  82  DFBCHECK(font->GetStringWidth(font,author_txt,-1,&str_width));
  83  DFBCHECK(primary->DrawString(primary,author_txt,-1,(screen_width-str_width)/2,screen_height/2,DSTF_LEFT));
  84  DFBCHECK(font->GetStringWidth(font,hp_txt,-1,&str_width));
  85  DFBCHECK(primary->DrawString(primary,hp_txt,-1,(screen_width-str_width)/2,(screen_height/2)+font_dsc.height,DSTF_LEFT));
  86  DFBCHECK(font->GetStringWidth(font,msg1_txt,-1,&str_width));
  87  DFBCHECK(primary->DrawString(primary,msg1_txt,-1,(screen_width-str_width)/2,(screen_height/2)+3*font_dsc.height,DSTF_LEFT));
  88  DFBCHECK(primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC));
  89  DFBCHECK(keyboard->GetKeyState(keyboard,DIKI_ESCAPE,&state_enter));
  90  while(state_enter==DIKS_UP) {
  91   DFBCHECK(keyboard->GetKeyState(keyboard,DIKI_ENTER,&state_enter));
  92  }
  93  font->Release(font);
  94
  95  /* display pictures */
  96  i=2;
  97  while(state_escape==DIKS_UP) {
  98   DFBCHECK(dfb->CreateImageProvider(dfb,argv[i],&img_prov));
  99   DFBCHECK(img_prov->GetSurfaceDescription(img_prov,&dsc));
 100   DFBCHECK(dfb->CreateSurface(dfb,&dsc,&logo ));
 101   DFBCHECK(img_prov->RenderTo(img_prov,logo,NULL));
 102   img_prov->Release(img_prov);
 103   DFBCHECK (primary->SetColor(primary,0x00,0x00,0x00,0x00));
 104   DFBCHECK(primary->FillRectangle(primary,0,0,screen_width,screen_height));
 105   DFBCHECK(primary->SetColor(primary,0x80,0x80,0xff,0xff));
 106   DFBCHECK(primary->DrawLine(primary,0,0,screen_width-1,screen_height-1));
 107   if((screen_width>=dsc.width)&&(screen_height>=dsc.height)) {
 108    DFBCHECK(primary->Blit(primary,logo,NULL,(screen_width-dsc.width)/2,(screen_height-dsc.height)/2));
 109   }
 110   else {
 111    DFBCHECK(primary->StretchBlit(primary,logo,NULL,NULL));
 112   }
 113   DFBCHECK(primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC));
 114   sleep(atoi(argv[1]));
 115   logo->Release(logo);
 116   DFBCHECK(keyboard->GetKeyState(keyboard,DIKI_ESCAPE,&state_escape));
 117   i++;
 118   if(i==argc) state_escape=DIKS_DOWN;
 119  }
 120
 121
 122  keyboard->Release(keyboard);
 123  logo->Release(logo);
 124  primary->Release(primary);
 125  dfb->Release(dfb);
 126
 127  return 23; /* ;) */
 128 }
 129