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simple update to allow several rendering modes

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(useful for testing the Unicode charmaps)
This commit is contained in:
David Turner 2000-02-21 16:18:01 +00:00
parent 1e7f843261
commit c64f644264
1 changed files with 86 additions and 2 deletions
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88
demos/src/ftview.c
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@ -38,6 +38,10 @@
char Header[128];
char* new_header = 0;
const unsigned char* Text =
"The quick brown fox jumped over the lazy dog 0123456789 \
âêîûôäëïöüÿàùéèç &#~\"'(-`_^@)=+° ABCDEFGHIJKLMNOPQRSTUVWXYZ $£^¨*µù%!§:/;.,?<>";
FT_Library library; /* the FreeType library */
FT_Face face; /* the font face */
FT_Size size; /* the font size */
@ -66,6 +70,8 @@
int graph_init = 0;
int render_mode = 1;
#define DEBUGxxx
#ifdef DEBUG
@ -188,7 +194,7 @@
bit3.buffer = glyph->bitmap.buffer;
bit3.grays = 0;
}
/* Then, blit the image to the target surface */
x_top = x_offset + TRUNC(left);
y_top = y_offset - TRUNC(top);
@ -292,6 +298,68 @@
}
static FT_Error Render_Text( int first_glyph, int ptsize )
{
FT_F26Dot6 start_x, start_y, step_x, step_y, x, y;
int i;
FT_Error error;
const unsigned char* p;
start_x = 4;
start_y = 12 + size->metrics.y_ppem;
step_x = size->metrics.x_ppem + 4;
step_y = size->metrics.y_ppem + 10;
x = start_x;
y = start_y;
i = first_glyph;
p = Text;
while (i > 0 && *p) { p++; i--; }
while ( *p )
{
if ( !(error = LoadChar( FT_Get_Char_Index( face, (unsigned char)*p ), hinted )) )
{
#ifdef DEBUG
if (i <= first_glyph+6)
{
LOG(( "metrics[%02d] = [%x %x]\n",
i,
glyph->metrics.horiBearingX,
glyph->metrics.horiAdvance ));
if (i == first_glyph+6)
LOG(( "-------------------------\n"));
}
#endif
Render_Glyph( x, y );
x += ( glyph->metrics.horiAdvance >> 6 ) + 1;
if ( x + size->metrics.x_ppem > bit.width )
{
x = start_x;
y += step_y;
if ( y >= bit.rows )
return FT_Err_Ok;
}
}
else
Fail++;
i++;
p++;
}
return FT_Err_Ok;
}
static void Help( )
{
grEvent dummy_event;
@ -313,6 +381,7 @@
grWriteln(" h : toggle outline hinting" );
grWriteln(" b : toggle embedded bitmaps" );
grWriteln(" l : toggle low precision rendering" );
grWriteln(" space : toggle rendering mode" );
grLn();
grWriteln(" Up : increase pointsize by 1 unit" );
grWriteln(" Down : decrease pointsize by 1 unit" );
@ -379,6 +448,13 @@
: "glyph hinting is now ignored" );
break;
case grKEY(' '):
render_mode ^= 1;
new_header = ( render_mode
? "rendering all glyphs in font"
: "rendering test text string" );
break;
case grKeyF1:
case grKEY('?'):
Help();
@ -575,7 +651,15 @@
if ( file_loaded >= 1 )
{
Render_All( Num, ptsize );
switch (render_mode)
{
case 0:
Render_Text( Num, ptsize );
break;
default:
Render_All( Num, ptsize );
}
sprintf( Header, "%s %s (file %s)",
face->family_name,