/*
* Copyright © 2000 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "xftint.h"
#include FT_OUTLINE_H
#include FT_LCD_FILTER_H
#include FT_SYNTHESIS_H
/*
* Validate the memory info for a font
*/
static void
_XftFontValidateMemory (Display *dpy, XftFont *public)
{
XftFontInt *font = (XftFontInt *) public;
unsigned long glyph_memory;
FT_UInt glyphindex;
XftGlyph *xftg;
glyph_memory = 0;
for (glyphindex = 0; glyphindex < font->num_glyphs; glyphindex++)
{
xftg = font->glyphs[glyphindex];
if (xftg)
{
glyph_memory += xftg->glyph_memory;
}
}
if (glyph_memory != font->glyph_memory)
printf ("Font glyph cache incorrect has %ld bytes, should have %ld\n",
font->glyph_memory, glyph_memory);
}
/* we sometimes need to convert the glyph bitmap in a FT_GlyphSlot
* into a different format. For example, we want to convert a
* FT_PIXEL_MODE_LCD or FT_PIXEL_MODE_LCD_V bitmap into a 32-bit
* ARGB or ABGR bitmap.
*
* this function prepares a target descriptor for this operation.
*
* input :: target bitmap descriptor. The function will set its
* 'width', 'rows' and 'pitch' fields, and only these
*
* slot :: the glyph slot containing the source bitmap. this
* function assumes that slot->format == FT_GLYPH_FORMAT_BITMAP
*
* mode :: the requested final rendering mode. supported values are
* MONO, NORMAL (i.e. gray), LCD and LCD_V
*
* the function returns the size in bytes of the corresponding buffer,
* it's up to the caller to allocate the corresponding memory block
* before calling _fill_xrender_bitmap
*
* it also returns -1 in case of error (e.g. incompatible arguments,
* like trying to convert a gray bitmap into a monochrome one)
*/
static int
_compute_xrender_bitmap_size( FT_Bitmap* target,
FT_GlyphSlot slot,
FT_Render_Mode mode )
{
FT_Bitmap* ftbit;
int width, height, pitch;
if ( slot->format != FT_GLYPH_FORMAT_BITMAP )
return -1;
// compute the size of the final bitmap
ftbit = &slot->bitmap;
width = ftbit->width;
height = ftbit->rows;
pitch = (width+3) & ~3;
switch ( ftbit->pixel_mode )
{
case FT_PIXEL_MODE_MONO:
if ( mode == FT_RENDER_MODE_MONO )
{
pitch = (((width+31) & ~31) >> 3);
break;
}
/* fall-through */
case FT_PIXEL_MODE_GRAY:
if ( mode == FT_RENDER_MODE_LCD ||
mode == FT_RENDER_MODE_LCD_V )
{
/* each pixel is replicated into a 32-bit ARGB value */
pitch = width*4;
}
break;
case FT_PIXEL_MODE_LCD:
if ( mode != FT_RENDER_MODE_LCD )
return -1;
/* horz pixel triplets are packed into 32-bit ARGB values */
width /= 3;
pitch = width*4;
break;
case FT_PIXEL_MODE_LCD_V:
if ( mode != FT_RENDER_MODE_LCD_V )
return -1;
/* vert pixel triplets are packed into 32-bit ARGB values */
height /= 3;
pitch = width*4;
break;
default: /* unsupported source format */
return -1;
}
target->width = width;
target->rows = height;
target->pitch = pitch;
target->buffer = NULL;
return pitch * height;
}
/* this functions converts the glyph bitmap found in a FT_GlyphSlot
* into a different format (see _compute_xrender_bitmap_size)
*
* you should call this function after _compute_xrender_bitmap_size
*
* target :: target bitmap descriptor. Note that its 'buffer' pointer
* must point to memory allocated by the caller
*
* slot :: the glyph slot containing the source bitmap
*
* mode :: the requested final rendering mode
*
* bgr :: boolean, set if BGR or VBGR pixel ordering is needed
*/
static void
_fill_xrender_bitmap( FT_Bitmap* target,
FT_GlyphSlot slot,
FT_Render_Mode mode,
int bgr )
{
FT_Bitmap* ftbit = &slot->bitmap;
{
unsigned char* srcLine = ftbit->buffer;
unsigned char* dstLine = target->buffer;
int src_pitch = ftbit->pitch;
int width = target->width;
int height = target->rows;
int pitch = target->pitch;
int subpixel;
int h;
subpixel = ( mode == FT_RENDER_MODE_LCD ||
mode == FT_RENDER_MODE_LCD_V );
if ( src_pitch < 0 )
srcLine -= src_pitch*(ftbit->rows-1);
switch ( ftbit->pixel_mode )
{
case FT_PIXEL_MODE_MONO:
if ( subpixel ) /* convert mono to ARGB32 values */
{
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
{
int x;
for ( x = 0; x < width; x++ )
{
if ( srcLine[(x >> 3)] & (0x80 >> (x & 7)) )
((unsigned int*)dstLine)[x] = 0xffffffffU;
}
}
}
else if ( mode == FT_RENDER_MODE_NORMAL ) /* convert mono to 8-bit gray */
{
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
{
int x;
for ( x = 0; x < width; x++ )
{
if ( srcLine[(x >> 3)] & (0x80 >> (x & 7)) )
dstLine[x] = 0xff;
}
}
}
else /* copy mono to mono */
{
int bytes = (width+7) >> 3;
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
memcpy( dstLine, srcLine, bytes );
}
break;
case FT_PIXEL_MODE_GRAY:
if ( subpixel ) /* convert gray to ARGB32 values */
{
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
{
int x;
unsigned int* dst = (unsigned int*)dstLine;
for ( x = 0; x < width; x++ )
{
unsigned int pix = srcLine[x];
pix |= (pix << 8);
pix |= (pix << 16);
dst[x] = pix;
}
}
}
else /* copy gray into gray */
{
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
memcpy( dstLine, srcLine, width );
}
break;
case FT_PIXEL_MODE_LCD:
if ( !bgr )
{
/* convert horizontal RGB into ARGB32 */
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
{
int x;
unsigned char* src = srcLine;
unsigned int* dst = (unsigned int*)dstLine;
for ( x = 0; x < width; x++, src += 3 )
{
unsigned int pix;
pix = ((unsigned int)src[0] << 16) |
((unsigned int)src[1] << 8) |
((unsigned int)src[2] ) |
((unsigned int)src[1] << 24) ;
dst[x] = pix;
}
}
}
else
{
/* convert horizontal BGR into ARGB32 */
for ( h = height; h > 0; h--, srcLine += src_pitch, dstLine += pitch )
{
int x;
unsigned char* src = srcLine;
unsigned int* dst = (unsigned int*)dstLine;
for ( x = 0; x < width; x++, src += 3 )
{
unsigned int pix;
pix = ((unsigned int)src[2] << 16) |
((unsigned int)src[1] << 8) |
((unsigned int)src[0] ) |
((unsigned int)src[1] << 24) ;
dst[x] = pix;
}
}
}
break;
default: /* FT_PIXEL_MODE_LCD_V */
/* convert vertical RGB into ARGB32 */
if ( !bgr )
{
for ( h = height; h > 0; h--, srcLine += 3*src_pitch, dstLine += pitch )
{
int x;
unsigned char* src = srcLine;
unsigned int* dst = (unsigned int*)dstLine;
for ( x = 0; x < width; x++, src += 1 )
{
unsigned int pix;
pix = ((unsigned int)src[0] << 16) |
((unsigned int)src[src_pitch] << 8) |
((unsigned int)src[src_pitch*2] ) |
((unsigned int)src[src_pitch] << 24) ;
dst[x] = pix;
}
}
}
else
{
for ( h = height; h > 0; h--, srcLine += 3*src_pitch, dstLine += pitch )
{
int x;
unsigned char* src = srcLine;
unsigned int* dst = (unsigned int*)dstLine;
for ( x = 0; x < width; x++, src += 1 )
{
unsigned int pix;
pix = ((unsigned int)src[src_pitch*2] << 16) |
((unsigned int)src[src_pitch] << 8) |
((unsigned int)src[0] ) |
((unsigned int)src[src_pitch] << 24) ;
dst[x] = pix;
}
}
}
}
}
}
_X_EXPORT void
XftFontLoadGlyphs (Display *dpy,
XftFont *pub,
FcBool need_bitmaps,
_Xconst FT_UInt *glyphs,
int nglyph)
{
XftDisplayInfo *info = _XftDisplayInfoGet (dpy, True);
XftFontInt *font = (XftFontInt *) pub;
FT_Error error;
FT_UInt glyphindex;
FT_GlyphSlot glyphslot;
XftGlyph *xftg;
Glyph glyph;
unsigned char bufLocal[4096];
unsigned char *bufBitmap = bufLocal;
int bufSize = sizeof (bufLocal);
int size;
int width;
int height;
int left, right, top, bottom;
FT_Bitmap* ftbit;
FT_Bitmap local;
FT_Vector vector;
FT_Face face;
FT_Render_Mode mode = FT_RENDER_MODE_MONO;
if (!info)
return;
face = XftLockFace (&font->public);
if (!face)
return;
if (font->info.antialias)
{
switch (font->info.rgba) {
case FC_RGBA_RGB:
case FC_RGBA_BGR:
mode = FT_RENDER_MODE_LCD;
break;
case FC_RGBA_VRGB:
case FC_RGBA_VBGR:
mode = FT_RENDER_MODE_LCD_V;
break;
default:
mode = FT_RENDER_MODE_NORMAL;
}
}
while (nglyph--)
{
glyphindex = *glyphs++;
xftg = font->glyphs[glyphindex];
if (!xftg)
continue;
if (XftDebug() & XFT_DBG_CACHE)
_XftFontValidateMemory (dpy, pub);
/*
* Check to see if this glyph has just been loaded,
* this happens when drawing the same glyph twice
* in a single string
*/
if (xftg->glyph_memory)
continue;
FT_Library_SetLcdFilter( _XftFTlibrary, font->info.lcd_filter);
error = FT_Load_Glyph (face, glyphindex, font->info.load_flags);
if (error)
{
/*
* If anti-aliasing or transforming glyphs and
* no outline version exists, fallback to the
* bitmap and let things look bad instead of
* missing the glyph
*/
if (font->info.load_flags & FT_LOAD_NO_BITMAP)
error = FT_Load_Glyph (face, glyphindex,
font->info.load_flags & ~FT_LOAD_NO_BITMAP);
if (error)
continue;
}
#define FLOOR(x) ((x) & -64)
#define CEIL(x) (((x)+63) & -64)
#define TRUNC(x) ((x) >> 6)
#define ROUND(x) (((x)+32) & -64)
glyphslot = face->glyph;
/*
* Embolden if required
*/
if (font->info.embolden) FT_GlyphSlot_Embolden(glyphslot);
/*
* Compute glyph metrics from FreeType information
*/
if(font->info.transform && glyphslot->format != FT_GLYPH_FORMAT_BITMAP)
{
/*
* calculate the true width by transforming all four corners.
*/
int xc, yc;
left = right = top = bottom = 0;
for(xc = 0; xc <= 1; xc ++) {
for(yc = 0; yc <= 1; yc++) {
vector.x = glyphslot->metrics.horiBearingX + xc * glyphslot->metrics.width;
vector.y = glyphslot->metrics.horiBearingY - yc * glyphslot->metrics.height;
FT_Vector_Transform(&vector, &font->info.matrix);
if (XftDebug() & XFT_DBG_GLYPH)
printf("Trans %d %d: %d %d\n", (int) xc, (int) yc,
(int) vector.x, (int) vector.y);
if(xc == 0 && yc == 0) {
left = right = vector.x;
top = bottom = vector.y;
} else {
if(left > vector.x) left = vector.x;
if(right < vector.x) right = vector.x;
if(bottom > vector.y) bottom = vector.y;
if(top < vector.y) top = vector.y;
}
}
}
left = FLOOR(left);
right = CEIL(right);
bottom = FLOOR(bottom);
top = CEIL(top);
} else {
left = FLOOR( glyphslot->metrics.horiBearingX );
right = CEIL( glyphslot->metrics.horiBearingX + glyphslot->metrics.width );
top = CEIL( glyphslot->metrics.horiBearingY );
bottom = FLOOR( glyphslot->metrics.horiBearingY - glyphslot->metrics.height );
}
width = TRUNC(right - left);
height = TRUNC( top - bottom );
/*
* Clip charcell glyphs to the bounding box
* XXX transformed?
*/
if (font->info.spacing >= FC_CHARCELL && !font->info.transform)
{
if (font->info.load_flags & FT_LOAD_VERTICAL_LAYOUT)
{
if (TRUNC(bottom) > font->public.max_advance_width)
{
int adjust;
adjust = bottom - (font->public.max_advance_width << 6);
if (adjust > top)
adjust = top;
top -= adjust;
bottom -= adjust;
height = font->public.max_advance_width;
}
}
else
{
if (TRUNC(right) > font->public.max_advance_width)
{
int adjust;
adjust = right - (font->public.max_advance_width << 6);
if (adjust > left)
adjust = left;
left -= adjust;
right -= adjust;
width = font->public.max_advance_width;
}
}
}
if ( glyphslot->format != FT_GLYPH_FORMAT_BITMAP )
{
error = FT_Render_Glyph( face->glyph, mode );
if (error)
continue;
}
FT_Library_SetLcdFilter( _XftFTlibrary, FT_LCD_FILTER_NONE );
if (font->info.spacing >= FC_MONO)
{
if (font->info.transform)
{
if (font->info.load_flags & FT_LOAD_VERTICAL_LAYOUT)
{
vector.x = 0;
vector.y = -face->size->metrics.max_advance;
}
else
{
vector.x = face->size->metrics.max_advance;
vector.y = 0;
}
FT_Vector_Transform (&vector, &font->info.matrix);
xftg->metrics.xOff = vector.x >> 6;
xftg->metrics.yOff = -(vector.y >> 6);
}
else
{
if (font->info.load_flags & FT_LOAD_VERTICAL_LAYOUT)
{
xftg->metrics.xOff = 0;
xftg->metrics.yOff = -font->public.max_advance_width;
}
else
{
xftg->metrics.xOff = font->public.max_advance_width;
xftg->metrics.yOff = 0;
}
}
}
else
{
xftg->metrics.xOff = TRUNC(ROUND(glyphslot->advance.x));
xftg->metrics.yOff = -TRUNC(ROUND(glyphslot->advance.y));
}
// compute the size of the final bitmap
ftbit = &glyphslot->bitmap;
width = ftbit->width;
height = ftbit->rows;
if (XftDebug() & XFT_DBG_GLYPH)
{
printf ("glyph %d:\n", (int) glyphindex);
printf (" xywh (%d %d %d %d), trans (%d %d %d %d) wh (%d %d)\n",
(int) glyphslot->metrics.horiBearingX,
(int) glyphslot->metrics.horiBearingY,
(int) glyphslot->metrics.width,
(int) glyphslot->metrics.height,
left, right, top, bottom,
width, height);
if (XftDebug() & XFT_DBG_GLYPHV)
{
int x, y;
unsigned char *line;
line = ftbit->buffer;
if (ftbit->pitch < 0)
line -= ftbit->pitch*(height-1);
for (y = 0; y < height; y++)
{
if (font->info.antialias)
{
static const char den[] = { " .:;=+*#" };
for (x = 0; x < width; x++)
printf ("%c", den[line[x] >> 5]);
}
else
{
for (x = 0; x < width * 8; x++)
{
printf ("%c", line[x>>3] & (1 << (x & 7)) ? '#' : ' ');
}
}
printf ("|\n");
line += ftbit->pitch;
}
printf ("\n");
}
}
size = _compute_xrender_bitmap_size( &local, glyphslot, mode );
if ( size < 0 )
continue;
xftg->metrics.width = local.width;
xftg->metrics.height = local.rows;
xftg->metrics.x = - glyphslot->bitmap_left;
xftg->metrics.y = glyphslot->bitmap_top;
/*
* If the glyph is relatively large (> 1% of server memory),
* don't send it until necessary.
*/
if (!need_bitmaps && size > info->max_glyph_memory / 100)
continue;
/*
* Make sure there is enough buffer space for the glyph.
*/
if (size > bufSize)
{
if (bufBitmap != bufLocal)
free (bufBitmap);
bufBitmap = (unsigned char *) malloc (size);
if (!bufBitmap)
continue;
bufSize = size;
}
memset (bufBitmap, 0, size);
local.buffer = bufBitmap;
_fill_xrender_bitmap( &local, glyphslot, mode,
(font->info.rgba == FC_RGBA_BGR ||
font->info.rgba == FC_RGBA_VBGR ) );
/*
* Copy or convert into local buffer.
*/
/*
* Use the glyph index as the wire encoding; it
* might be more efficient for some locales to map
* these by first usage to smaller values, but that
* would require persistently storing the map when
* glyphs were freed.
*/
glyph = (Glyph) glyphindex;
xftg->glyph_memory = size + sizeof (XftGlyph);
if (font->format)
{
if (!font->glyphset)
font->glyphset = XRenderCreateGlyphSet (dpy, font->format);
if ( mode == FT_RENDER_MODE_MONO )
{
/* swap bits in each byte */
if (BitmapBitOrder (dpy) != MSBFirst)
{
unsigned char *line = (unsigned char*)bufBitmap;
int i = size;
while (i--)
{
int c = *line;
c = ((c << 1) & 0xaa) | ((c >> 1) & 0x55);
c = ((c << 2) & 0xcc) | ((c >> 2) & 0x33);
c = ((c << 4) & 0xf0) | ((c >> 4) & 0x0f);
*line++ = c;
}
}
}
else if ( mode != FT_RENDER_MODE_NORMAL )
{
/* invert ARGB <=> BGRA */
if (ImageByteOrder (dpy) != XftNativeByteOrder ())
XftSwapCARD32 ((CARD32 *) bufBitmap, size >> 2);
}
XRenderAddGlyphs (dpy, font->glyphset, &glyph,
&xftg->metrics, 1,
(char *) bufBitmap, size);
}
else
{
if (size)
{
xftg->bitmap = malloc (size);
if (xftg->bitmap)
memcpy (xftg->bitmap, bufBitmap, size);
}
else
xftg->bitmap = NULL;
}
font->glyph_memory += xftg->glyph_memory;
info->glyph_memory += xftg->glyph_memory;
if (XftDebug() & XFT_DBG_CACHE)
_XftFontValidateMemory (dpy, pub);
if (XftDebug() & XFT_DBG_CACHEV)
printf ("Caching glyph 0x%x size %ld\n", glyphindex,
xftg->glyph_memory);
}
if (bufBitmap != bufLocal)
free (bufBitmap);
XftUnlockFace (&font->public);
}
_X_EXPORT void
XftFontUnloadGlyphs (Display *dpy,
XftFont *pub,
_Xconst FT_UInt *glyphs,
int nglyph)
{
XftDisplayInfo *info = _XftDisplayInfoGet (dpy, False);
XftFontInt *font = (XftFontInt *) pub;
XftGlyph *xftg;
FT_UInt glyphindex;
Glyph glyphBuf[1024];
int nused;
nused = 0;
while (nglyph--)
{
glyphindex = *glyphs++;
xftg = font->glyphs[glyphindex];
if (!xftg)
continue;
if (xftg->glyph_memory)
{
if (font->format)
{
if (font->glyphset)
{
glyphBuf[nused++] = (Glyph) glyphindex;
if (nused == sizeof (glyphBuf) / sizeof (glyphBuf[0]))
{
XRenderFreeGlyphs (dpy, font->glyphset, glyphBuf, nused);
nused = 0;
}
}
}
else
{
if (xftg->bitmap)
free (xftg->bitmap);
}
font->glyph_memory -= xftg->glyph_memory;
if (info)
info->glyph_memory -= xftg->glyph_memory;
}
free (xftg);
XftMemFree (XFT_MEM_GLYPH, sizeof (XftGlyph));
font->glyphs[glyphindex] = NULL;
}
if (font->glyphset && nused)
XRenderFreeGlyphs (dpy, font->glyphset, glyphBuf, nused);
}
_X_EXPORT FcBool
XftFontCheckGlyph (Display *dpy,
XftFont *pub,
FcBool need_bitmaps,
FT_UInt glyph,
FT_UInt *missing,
int *nmissing)
{
XftFontInt *font = (XftFontInt *) pub;
XftGlyph *xftg;
int n;
if (glyph >= font->num_glyphs)
return FcFalse;
xftg = font->glyphs[glyph];
if (!xftg || (need_bitmaps && !xftg->glyph_memory))
{
if (!xftg)
{
xftg = (XftGlyph *) malloc (sizeof (XftGlyph));
if (!xftg)
return FcFalse;
XftMemAlloc (XFT_MEM_GLYPH, sizeof (XftGlyph));
xftg->bitmap = NULL;
xftg->glyph_memory = 0;
font->glyphs[glyph] = xftg;
}
n = *nmissing;
missing[n++] = glyph;
if (n == XFT_NMISSING)
{
XftFontLoadGlyphs (dpy, pub, need_bitmaps, missing, n);
n = 0;
}
*nmissing = n;
return FcTrue;
}
else
return FcFalse;
}
_X_EXPORT FcBool
XftCharExists (Display *dpy,
XftFont *pub,
FcChar32 ucs4)
{
if (pub->charset)
return FcCharSetHasChar (pub->charset, ucs4);
return FcFalse;
}
#define Missing ((FT_UInt) ~0)
_X_EXPORT FT_UInt
XftCharIndex (Display *dpy,
XftFont *pub,
FcChar32 ucs4)
{
XftFontInt *font = (XftFontInt *) pub;
FcChar32 ent, offset;
FT_Face face;
if (!font->hash_value)
return 0;
ent = ucs4 % font->hash_value;
offset = 0;
while (font->hash_table[ent].ucs4 != ucs4)
{
if (font->hash_table[ent].ucs4 == (FcChar32) ~0)
{
if (!XftCharExists (dpy, pub, ucs4))
return 0;
face = XftLockFace (pub);
if (!face)
return 0;
font->hash_table[ent].ucs4 = ucs4;
font->hash_table[ent].glyph = FcFreeTypeCharIndex (face, ucs4);
XftUnlockFace (pub);
break;
}
if (!offset)
{
offset = ucs4 % font->rehash_value;
if (!offset)
offset = 1;
}
ent = ent + offset;
if (ent >= font->hash_value)
ent -= font->hash_value;
}
return font->hash_table[ent].glyph;
}
/*
* Pick a random glyph from the font and remove it from the cache
*/
_X_HIDDEN void
_XftFontUncacheGlyph (Display *dpy, XftFont *pub)
{
XftFontInt *font = (XftFontInt *) pub;
unsigned long glyph_memory;
FT_UInt glyphindex;
XftGlyph *xftg;
if (!font->glyph_memory)
return;
if (font->use_free_glyphs)
{
glyph_memory = rand() % font->glyph_memory;
}
else
{
if (font->glyphset)
{
XRenderFreeGlyphSet (dpy, font->glyphset);
font->glyphset = 0;
}
glyph_memory = 0;
}
if (XftDebug() & XFT_DBG_CACHE)
_XftFontValidateMemory (dpy, pub);
for (glyphindex = 0; glyphindex < font->num_glyphs; glyphindex++)
{
xftg = font->glyphs[glyphindex];
if (xftg)
{
if (xftg->glyph_memory > glyph_memory)
{
if (XftDebug() & XFT_DBG_CACHEV)
printf ("Uncaching glyph 0x%x size %ld\n",
glyphindex, xftg->glyph_memory);
XftFontUnloadGlyphs (dpy, pub, &glyphindex, 1);
if (!font->use_free_glyphs)
continue;
break;
}
glyph_memory -= xftg->glyph_memory;
}
}
if (XftDebug() & XFT_DBG_CACHE)
_XftFontValidateMemory (dpy, pub);
}
_X_HIDDEN void
_XftFontManageMemory (Display *dpy, XftFont *pub)
{
XftFontInt *font = (XftFontInt *) pub;
if (font->max_glyph_memory)
{
if (XftDebug() & XFT_DBG_CACHE)
{
if (font->glyph_memory > font->max_glyph_memory)
printf ("Reduce memory for font 0x%lx from %ld to %ld\n",
font->glyphset ? font->glyphset : (unsigned long) font,
font->glyph_memory, font->max_glyph_memory);
}
while (font->glyph_memory > font->max_glyph_memory)
_XftFontUncacheGlyph (dpy, pub);
}
_XftDisplayManageMemory (dpy);
}