bool
GIFLoad::ReadGIFHeader()
{
// standard header
unsigned char header[13];
if (fInput->Read(header, 13) < 13)
return false;
fWidth = header[6] + (header[7] << 8);
fHeight = header[8] + (header[9] << 8);
fPalette = new(std::nothrow) LoadPalette();
if (fPalette == NULL)
return false;
// Global palette
if (header[10] & GIF_LOCALCOLORMAP) {
fPalette->size_in_bits = (header[10] & 0x07) + 1;
if (debug) {
syslog(LOG_INFO, "GIFLoad::ReadGIFHeader() - "
"Found %d bit global palette\n",
fPalette->size_in_bits);
}
int s = 1 << fPalette->size_in_bits;
fPalette->size = s;
unsigned char gp[256 * 3];
if (fInput->Read(gp, s * 3) < s * 3)
return false;
for (int x = 0; x < s; x++)
fPalette->SetColor(x, gp[x * 3], gp[x * 3 + 1], gp[x * 3 + 2]);
fPalette->backgroundindex = header[11];
} else {
// install BeOS system palette in case local palette isn't present
color_map* map = (color_map*)system_colors();
for (int x = 0; x < 256; x++) {
fPalette->SetColor(x, map->color_list[x].red,
map->color_list[x].green, map->color_list[x].blue);
}
fPalette->size = 256;
fPalette->size_in_bits = 8;
}
return true;
}
ColorMenu::ColorMenu (const char *name, BView *_view, int h, int v, float s)
: BMenu (name, h*s, v*s)
{
index = 0;
for (int i = 0; i < v; i++)
for (int j = 0; j < h; j++)
{
BRect cframe = BRect (j*s, i*s, (j + 1)*s, (i + 1)*s);
AddItem (new ColorItem (system_colors()->color_list[index]), cframe);
}
Mark (0);
view = _view;
hs = h*s;
vs = v*s;
parent = NULL;
fWindow = NULL;
}
void
DockItem::MakeHighlitIcon( void )
{
size_t size;
BBitmap *icon, *iconHi;
BScreen screen;
for ( int i=0; i<2; i++ ) {
switch ( i ) {
case 0:
size = 1024;
icon = mLargeIcon;
iconHi = mLargeIconHi;
break;
case 1:
size = 256;
icon = mSmallIcon;
iconHi = mSmallIconHi;
break;
}
uchar *hilitBits = new uchar[size];
uchar *hilitBitsPtr = &hilitBits[0];
uchar *bitsPtr = (uchar *)icon->Bits();
rgb_color hilitColor;
for ( int i=0; i<size; i++ ) {
if ( *bitsPtr != B_TRANSPARENT_8_BIT ) {
hilitColor = system_colors()->color_list[*bitsPtr++];
hilitColor.red *= 0.7;
hilitColor.green *= 0.7;
hilitColor.blue *= 0.7;
*hilitBitsPtr++ = screen.IndexForColor( hilitColor );
} else {
*hilitBitsPtr++ = *bitsPtr++;
}
}
iconHi->SetBits( hilitBits, size, 0, B_COLOR_8_BIT );
}
}
