summaryrefslogtreecommitdiffstats
path: root/src/3rdparty/freetype/src/pcf/pcfdrivr.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/3rdparty/freetype/src/pcf/pcfdrivr.c')
-rw-r--r--src/3rdparty/freetype/src/pcf/pcfdrivr.c163
1 files changed, 71 insertions, 92 deletions
diff --git a/src/3rdparty/freetype/src/pcf/pcfdrivr.c b/src/3rdparty/freetype/src/pcf/pcfdrivr.c
index 0119d94853..b39592c794 100644
--- a/src/3rdparty/freetype/src/pcf/pcfdrivr.c
+++ b/src/3rdparty/freetype/src/pcf/pcfdrivr.c
@@ -45,7 +45,7 @@ THE SOFTWARE.
#include "pcfutil.h"
#undef FT_COMPONENT
-#define FT_COMPONENT trace_pcfread
+#define FT_COMPONENT pcfread
#include FT_SERVICE_BDF_H
#include FT_SERVICE_FONT_FORMAT_H
@@ -53,21 +53,24 @@ THE SOFTWARE.
#include FT_DRIVER_H
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
+ /**************************************************************************
+ *
+ * The macro FT_COMPONENT is used in trace mode. It is an implicit
+ * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
+ * messages during execution.
+ */
#undef FT_COMPONENT
-#define FT_COMPONENT trace_pcfdriver
+#define FT_COMPONENT pcfdriver
+ /*
+ * This file uses X11 terminology for PCF data; an `encoding' in X11 speak
+ * is the same as a `character code' in FreeType speak.
+ */
typedef struct PCF_CMapRec_
{
- FT_CMapRec root;
- FT_ULong num_encodings;
- PCF_Encoding encodings;
+ FT_CMapRec root;
+ PCF_Enc enc;
} PCF_CMapRec, *PCF_CMap;
@@ -82,8 +85,7 @@ THE SOFTWARE.
FT_UNUSED( init_data );
- cmap->num_encodings = face->nencodings;
- cmap->encodings = face->encodings;
+ cmap->enc = &face->enc;
return FT_Err_Ok;
}
@@ -95,8 +97,7 @@ THE SOFTWARE.
PCF_CMap cmap = (PCF_CMap)pcfcmap;
- cmap->encodings = NULL;
- cmap->num_encodings = 0;
+ cmap->enc = NULL;
}
@@ -104,36 +105,26 @@ THE SOFTWARE.
pcf_cmap_char_index( FT_CMap pcfcmap, /* PCF_CMap */
FT_UInt32 charcode )
{
- PCF_CMap cmap = (PCF_CMap)pcfcmap;
- PCF_Encoding encodings = cmap->encodings;
- FT_ULong min, max, mid;
- FT_UInt result = 0;
+ PCF_CMap cmap = (PCF_CMap)pcfcmap;
+ PCF_Enc enc = cmap->enc;
+ FT_UShort charcodeRow;
+ FT_UShort charcodeCol;
- min = 0;
- max = cmap->num_encodings;
+ if ( charcode > (FT_UInt32)( enc->lastRow * 256 + enc->lastCol ) ||
+ charcode < (FT_UInt32)( enc->firstRow * 256 + enc->firstCol ) )
+ return 0;
- while ( min < max )
- {
- FT_ULong code;
+ charcodeRow = (FT_UShort)( charcode >> 8 );
+ charcodeCol = (FT_UShort)( charcode & 0xFF );
+ if ( charcodeCol < enc->firstCol ||
+ charcodeCol > enc->lastCol )
+ return 0;
- mid = ( min + max ) >> 1;
- code = (FT_ULong)encodings[mid].enc;
-
- if ( charcode == code )
- {
- result = encodings[mid].glyph + 1;
- break;
- }
-
- if ( charcode < code )
- max = mid;
- else
- min = mid + 1;
- }
-
- return result;
+ return (FT_UInt)enc->offset[( charcodeRow - enc->firstRow ) *
+ ( enc->lastCol - enc->firstCol + 1 ) +
+ charcodeCol - enc->firstCol];
}
@@ -141,52 +132,43 @@ THE SOFTWARE.
pcf_cmap_char_next( FT_CMap pcfcmap, /* PCF_CMap */
FT_UInt32 *acharcode )
{
- PCF_CMap cmap = (PCF_CMap)pcfcmap;
- PCF_Encoding encodings = cmap->encodings;
- FT_ULong min, max, mid;
- FT_ULong charcode = *acharcode + 1;
- FT_UInt result = 0;
-
+ PCF_CMap cmap = (PCF_CMap)pcfcmap;
+ PCF_Enc enc = cmap->enc;
+ FT_UInt32 charcode = *acharcode;
+ FT_UShort charcodeRow;
+ FT_UShort charcodeCol;
+ FT_Int result = 0;
- min = 0;
- max = cmap->num_encodings;
- while ( min < max )
+ while ( charcode < (FT_UInt32)( enc->lastRow * 256 + enc->lastCol ) )
{
- FT_ULong code;
+ charcode++;
+ if ( charcode < (FT_UInt32)( enc->firstRow * 256 + enc->firstCol ) )
+ charcode = (FT_UInt32)( enc->firstRow * 256 + enc->firstCol );
- mid = ( min + max ) >> 1;
- code = (FT_ULong)encodings[mid].enc;
+ charcodeRow = (FT_UShort)( charcode >> 8 );
+ charcodeCol = (FT_UShort)( charcode & 0xFF );
- if ( charcode == code )
+ if ( charcodeCol < enc->firstCol )
+ charcodeCol = enc->firstCol;
+ else if ( charcodeCol > enc->lastCol )
{
- result = encodings[mid].glyph + 1;
- goto Exit;
+ charcodeRow++;
+ charcodeCol = enc->firstCol;
}
- if ( charcode < code )
- max = mid;
- else
- min = mid + 1;
- }
+ charcode = (FT_UInt32)( charcodeRow * 256 + charcodeCol );
- charcode = 0;
- if ( min < cmap->num_encodings )
- {
- charcode = (FT_ULong)encodings[min].enc;
- result = encodings[min].glyph + 1;
+ result = (FT_UInt)enc->offset[( charcodeRow - enc->firstRow ) *
+ ( enc->lastCol - enc->firstCol + 1 ) +
+ charcodeCol - enc->firstCol];
+ if ( result != 0xFFFFU )
+ break;
}
- Exit:
- if ( charcode > 0xFFFFFFFFUL )
- {
- FT_TRACE1(( "pcf_cmap_char_next: charcode 0x%x > 32bit API" ));
- *acharcode = 0;
- /* XXX: result should be changed to indicate an overflow error */
- }
- else
- *acharcode = (FT_UInt32)charcode;
+ *acharcode = charcode;
+
return result;
}
@@ -216,8 +198,8 @@ THE SOFTWARE.
memory = FT_FACE_MEMORY( face );
- FT_FREE( face->encodings );
FT_FREE( face->metrics );
+ FT_FREE( face->enc.offset );
/* free properties */
if ( face->properties )
@@ -512,9 +494,6 @@ THE SOFTWARE.
stream = face->root.stream;
- if ( glyph_index > 0 )
- glyph_index--;
-
metric = face->metrics + glyph_index;
bitmap->rows = (unsigned int)( metric->ascent +
@@ -601,11 +580,11 @@ THE SOFTWARE.
}
- /*
- *
- * BDF SERVICE
- *
- */
+ /*
+ *
+ * BDF SERVICE
+ *
+ */
static FT_Error
pcf_get_bdf_property( PCF_Face face,
@@ -633,9 +612,9 @@ THE SOFTWARE.
}
/*
- * The PCF driver loads all properties as signed integers.
- * This really doesn't seem to be a problem, because this is
- * sufficient for any meaningful values.
+ * The PCF driver loads all properties as signed integers.
+ * This really doesn't seem to be a problem, because this is
+ * sufficient for any meaningful values.
*/
aproperty->type = BDF_PROPERTY_TYPE_INTEGER;
aproperty->u.integer = (FT_Int32)prop->value.l;
@@ -668,7 +647,7 @@ THE SOFTWARE.
/*
- * PROPERTY SERVICE
+ * PROPERTY SERVICE
*
*/
static FT_Error
@@ -777,11 +756,11 @@ THE SOFTWARE.
(FT_Properties_GetFunc)pcf_property_get ) /* get_property */
- /*
- *
- * SERVICE LIST
- *
- */
+ /*
+ *
+ * SERVICE LIST
+ *
+ */
static const FT_ServiceDescRec pcf_services[] =
{