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Process bitmap buffers 16- rather than 8-bits at a time.

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This commit is contained in:
ehouse 2009-11-15 18:25:09 +00:00
parent b38891269e
commit caf4165eba
1 changed files with 8 additions and 7 deletions
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15
xwords4/wince/cedraw.c
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@ -373,14 +373,15 @@ logBitmap( const BITMAP* bm, XP_U16 width, XP_U16 height )
#endif
static XP_Bool
anyBitSet( const XP_U8* rowPtr, XP_S16 rowBits )
anyBitSet( const XP_U16* rowPtr, XP_S16 rowBits )
{
XP_Bool set = XP_FALSE;
for ( ; rowBits > 0; rowBits -= 8, ++rowPtr ) {
XP_U8 byt = *rowPtr;
if ( rowBits < 8 ) {
byt &= (0xFF << (8-rowBits));
XP_ASSERT( ((int)rowPtr & 0x0001) == 0 ); /* ptr to word? */
for ( ; rowBits > 0; rowBits -= 16, ++rowPtr ) {
XP_U16 byt = *rowPtr;
if ( rowBits < 16 ) {
byt &= (0xFFFF << (16-rowBits));
}
if ( 0 != byt ) {
set = XP_TRUE;
@ -417,7 +418,7 @@ ceMeasureGlyph( HDC hdc, HBITMAP bmp, wchar_t glyph,
XP_ASSERT( *rowPtr == 0x00 ); /* check polarity isn't reversed. For some
obscure character this may fail. */
for ( yy = 0; yy < minTopSeen; ++yy ) {
if ( anyBitSet( rowPtr, size.cx ) ) {
if ( anyBitSet( (XP_U16*)rowPtr, size.cx ) ) {
*top = yy;
break;
}
@ -427,7 +428,7 @@ ceMeasureGlyph( HDC hdc, HBITMAP bmp, wchar_t glyph,
/* Extends lower than seen */
for ( yy = size.cy - 1, rowPtr = bminfo.bmBits + (bminfo.bmWidthBytes * yy);
yy > maxBottomSeen; --yy, rowPtr -= bminfo.bmWidthBytes ) {
if ( anyBitSet( rowPtr/*bminfo.bmBits + (bminfo.bmWidthBytes * yy)*/, size.cx ) ) {
if ( anyBitSet( (XP_U16*)rowPtr, size.cx ) ) {
*bottom = yy;
break;
}