[directfb-dev] SDL keyboard input bug?

[Alex Lau]

Dear All

While I'm doing some chinese font rendering test,
I realized there may be a bug in SDL input buffer

here I attact a programe I test with some chinese
font and text it work fine in console but when I
do system=sdl, input event didn't seem to work
correctly .... is it my sdl problem?

Thanks

#include <stdio.h>
#include <directfb.h>

#define VERSION "0.0.1"

static IDirectFB *dfb = NULL;
static IDirectFBSurface *primary = NULL;
static IDirectFBInputDevice *keyboard = NULL;

static int screen_width  = 0;
static int screen_height = 0;
#define DFBCHECK(x...)                                         \
{                                                              \
    DFBResult err = x;                                         \
                                                               \
    if (err != DFB_OK)                                         \
    {                                                          \
        fprintf( stderr, "%s <%d>:\n\t", __FILE__, __LINE__ ); \
        DirectFBErrorFatal( #x, err );                         \
    }                                                          \
}

static IDirectFBFont *font = NULL;
static DFBInputDeviceKeyState escape = DIKS_UP;

static IDirectFBEventBuffer *buffer = NULL;

static char *text = "跳過那只懶狗！ 跳过那只懒狗!";
static char *fontname = "/usr/X11R6/lib/X11/fonts/truetype/FZKaiTi.ttf";

static void
print_usage (const char *prg_name)
{
     int i;

     fprintf (stderr, "\nDirectFB Font Test (version %s)\n\n", VERSION);
     fprintf (stderr, "Usage: %s [options]\n\n", prg_name);
     fprintf (stderr, "Options:\n");
     fprintf (stderr, "   -f   --font				Full path font name\n");
     fprintf (stderr, "   -t   --text				Text to be displayed\n");

     fprintf (stderr, "\n");
}


static int render(int loopindex, int screen_width, int screen_height, int width)
{
  int i=loopindex; 

  if( i > -width )
  {
    DFBCHECK (primary->SetColor (primary, 0x0, 0x0, 0x0, 0xFF));
    DFBCHECK (primary->FillRectangle (primary, 0, 0, screen_width, screen_height));

    DFBCHECK (primary->SetColor (primary, 0x80, 0x0, 0x20, 0xFF));
    DFBCHECK (primary->DrawString (primary, text, -1, i, screen_height / 2, DSTF_LEFT));
    //DFBCHECK (primary->Flip (primary, NULL, DSFLIP_WAITFORSYNC));
    DFBCHECK (primary->Flip (primary, NULL, 0 ));
    i--; 
  } else {
    i=screen_width;
  }
  return i;
}

int main (int argc, char **argv)
{
  int width, quit=0, loopindex;
  DFBFontDescription font_dsc;
  DFBSurfaceDescription dsc;

  if( argc < 1 ) 
    print_usage( argv[0] );
  else if( argc >= 3 ) {
    if( strcmp( "-f", argv[1] )==0 || strcmp( "--font", argv[1] )==0 ){
      fontname = argv[2];
    } else if (strcmp ( "-t", argv[1] )==0 || strcmp( "--text", argv[1] )==0 ){
      text = argv[2];
    }
  }
  if( argc >= 5 ) {
    if( strcmp( "-f", argv[3] )==0 || strcmp( "--font", argv[3] )==0 ){
      fontname = argv[4];
    } else if (strcmp ( "-t", argv[3] )==0 || strcmp( "--text", argv[3] )==0 ){
      text = argv[4];
    }
  }


  DFBCHECK (DirectFBInit (&argc, &argv));

  DFBCHECK (DirectFBCreate (&dfb));
  // DFBCHECK (dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN));

  dsc.flags = DSDESC_CAPS;
  dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

  DFBCHECK (dfb->CreateSurface( dfb, &dsc, &primary ));
  DFBCHECK (primary->GetSize (primary, &screen_width, &screen_height));

  loopindex = screen_width;

  font_dsc.flags = DFDESC_HEIGHT;
  font_dsc.height = 48;

  DFBCHECK (dfb->GetInputDevice (dfb, DIDID_KEYBOARD, &keyboard));
  DFBCHECK (keyboard->CreateEventBuffer (keyboard, &buffer));
  
  DFBCHECK (dfb->CreateFont (dfb, fontname , &font_dsc, &font));
  DFBCHECK (primary->SetFont (primary, font));
  DFBCHECK (font->GetStringWidth (font, text, -1, &width));

  DFBInputEvent event;

  while (!quit){
    if ( buffer->HasEvent(buffer) == DFB_OK )
    {
      if( buffer->GetEvent (buffer, DFB_EVENT(&event)) == DFB_OK )
      {
	if (event.type == DIET_KEYPRESS) {
      	printf("key press %d\n", event.key_id );
	  if (event.key_id == DIKI_ESCAPE || event.key_id == DIKI_Q )
	    quit = 1;
	}
      }
    } else {
      loopindex = render(loopindex, screen_width, screen_height, width );
    }
  }

  font->Release (font);
  buffer->Release (buffer);
  keyboard->Release (keyboard);
  primary->Release (primary);
  dfb->Release (dfb);

  return 23;
}

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