diff options
Diffstat (limited to 'libXft/src/xftrender.c')
| -rw-r--r-- | libXft/src/xftrender.c | 1007 |
1 files changed, 1007 insertions, 0 deletions
diff --git a/libXft/src/xftrender.c b/libXft/src/xftrender.c new file mode 100644 index 000000000..94c211bde --- /dev/null +++ b/libXft/src/xftrender.c @@ -0,0 +1,1007 @@ +/* + * 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" + +#define NUM_LOCAL 1024 +#define NUM_ELT_LOCAL 128 + +/* + * Use the Render extension to draw the glyphs + */ + +_X_EXPORT void +XftGlyphRender (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FT_UInt *glyphs, + int nglyphs) +{ + XftFontInt *font = (XftFontInt *) pub; + int i; + FT_UInt missing[XFT_NMISSING]; + int nmissing; + FT_UInt g, max; + int size, width; + Glyph wire; + char *char8; + unsigned short *char16; + unsigned int *char32; + unsigned int char_local[NUM_LOCAL]; + unsigned int *chars; + FcBool glyphs_loaded; + + if (!font->format) + return; + + /* + * Load missing glyphs + */ + nmissing = 0; + max = 0; + glyphs_loaded = FcFalse; + for (i = 0; i < nglyphs; i++) + { + g = glyphs[i]; + if (g > max) + max = g; + if (XftFontCheckGlyph (dpy, pub, FcTrue, g, missing, &nmissing)) + glyphs_loaded = FcTrue; + } + if (nmissing) + XftFontLoadGlyphs (dpy, pub, FcTrue, missing, nmissing); + + if (!font->glyphset) + goto bail1; + if (max < 0x100) + { + width = 1; + size = sizeof (char); + } + else if (max < 0x10000) + { + width = 2; + size = sizeof (unsigned short); + } + else + { + width = 4; + size = sizeof (unsigned int); + } + chars = char_local; + if (nglyphs * size > sizeof (char_local)) + { + chars = malloc (nglyphs * size); + if (!chars) + goto bail1; + } + char8 = (char *) chars; + char16 = (unsigned short *) chars; + char32 = (unsigned int *) chars; + for (i = 0; i < nglyphs; i++) + { + wire = (Glyph) glyphs[i]; + if (wire >= font->num_glyphs || !font->glyphs[wire]) + wire = 0; + switch (width) { + case 1: char8[i] = (char) wire; break; + case 2: char16[i] = (unsigned short) wire; break; + case 4: char32[i] = (unsigned long) wire; break; + } + } + switch (width) { + case 1: + default: + XRenderCompositeString8 (dpy, op, + src, dst, font->format, font->glyphset, + srcx, srcy, x, y, char8, nglyphs); + break; + case 2: + XRenderCompositeString16(dpy, op, + src, dst, font->format, font->glyphset, + srcx, srcy, x, y, char16, nglyphs); + break; + case 4: + XRenderCompositeString32(dpy, op, + src, dst, font->format, font->glyphset, + srcx, srcy, x, y, char32, nglyphs); + break; + } + if (chars != char_local) + free (chars); +bail1: + if (glyphs_loaded) + _XftFontManageMemory (dpy, pub); +} + +_X_EXPORT void +XftGlyphSpecRender (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + _Xconst XftGlyphSpec *glyphs, + int nglyphs) +{ + XftFontInt *font = (XftFontInt *) pub; + int i, j; + FT_UInt missing[XFT_NMISSING]; + int nmissing; + int n; + FT_UInt g; + XftGlyph *glyph; + FT_UInt max; + int size, width; + char *char8; + unsigned short *char16; + unsigned int *char32; + unsigned int char_local[NUM_LOCAL]; + unsigned int *chars; + XGlyphElt8 *elts; + XGlyphElt8 elts_local[NUM_ELT_LOCAL]; + FcBool glyphs_loaded; + int nelt; + int x, y; + + if (!font->format) + return; + if (!nglyphs) + return; + + /* + * Load missing glyphs + */ + max = 0; + nmissing = 0; + glyphs_loaded = FcFalse; + g = glyphs[0].glyph; + for (i = 0; i < nglyphs; i++) + { + g = glyphs[i].glyph; + if (g > max) + max = g; + if (XftFontCheckGlyph (dpy, pub, FcTrue, g, missing, &nmissing)) + glyphs_loaded = FcTrue; + } + if (nmissing) + XftFontLoadGlyphs (dpy, pub, FcTrue, missing, nmissing); + + if (!font->glyphset) + goto bail1; + + /* + * See what encoding size is needed + */ + if (max < 0x100) + { + size = sizeof (char); + width = 1; + } + else if (max < 0x10000) + { + size = sizeof (unsigned short); + width = 2; + } + else + { + size = sizeof (unsigned int); + width = 4; + } + chars = char_local; + if (nglyphs * size > NUM_LOCAL) + { + chars = malloc (nglyphs * size); + if (!chars) + goto bail1; + } + char8 = (char *) chars; + char16 = (unsigned short *) chars; + char32 = (unsigned int *) chars; + + /* + * Compute the number of glyph elts needed + */ + nelt = 1; + for (i = 0; i < nglyphs; i++) + { + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + if (font->glyphs[g]) + break; + } + if (i == nglyphs) + goto bail2; + glyph = font->glyphs[g]; + x = glyphs[i].x + glyph->metrics.xOff; + y = glyphs[i].y + glyph->metrics.yOff; + while (++i < nglyphs) + { + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + /* + * check to see if the glyph is placed where it would + * fall using the normal spacing + */ + if ((glyph = font->glyphs[g])) + { + if (x != glyphs[i].x || y != glyphs[i].y) + { + x = glyphs[i].x; + y = glyphs[i].y; + ++nelt; + } + x += glyph->metrics.xOff; + y += glyph->metrics.yOff; + } + } + + elts = elts_local; + if (nelt > NUM_ELT_LOCAL) + { + elts = malloc (nelt * sizeof (XGlyphElt8)); + if (!elts) + goto bail2; + } + + /* + * Generate the list of glyph elts + */ + nelt = 0; + x = y = 0; + n = 0; + j = 0; + for (i = 0; i < nglyphs; i++) + { + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + if ((glyph = font->glyphs[g])) + { + if (!i || x != glyphs[i].x || y != glyphs[i].y) + { + if (n) + { + elts[nelt].nchars = n; + nelt++; + } + elts[nelt].glyphset = font->glyphset; + elts[nelt].chars = char8 + size * j; + elts[nelt].xOff = glyphs[i].x - x; + elts[nelt].yOff = glyphs[i].y - y; + x = glyphs[i].x; + y = glyphs[i].y; + n = 0; + } + switch (width) { + case 1: char8[j] = (char) g; break; + case 2: char16[j] = (unsigned short) g; break; + case 4: char32[j] = (unsigned int) g; break; + } + x += glyph->metrics.xOff; + y += glyph->metrics.yOff; + j++; + n++; + } + } + if (n) + { + elts[nelt].nchars = n; + nelt++; + } + switch (width) { + case 1: + XRenderCompositeText8 (dpy, op, src, dst, font->format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + elts, nelt); + break; + case 2: + XRenderCompositeText16 (dpy, op, src, dst, font->format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + (XGlyphElt16 *) elts, nelt); + break; + case 4: + XRenderCompositeText32 (dpy, op, src, dst, font->format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + (XGlyphElt32 *) elts, nelt); + break; + } + + if (elts != elts_local) + free (elts); +bail2: + if (chars != char_local) + free (chars); +bail1: + if (glyphs_loaded) + _XftFontManageMemory (dpy, pub); +} + +_X_EXPORT void +XftCharSpecRender (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + _Xconst XftCharSpec *chars, + int len) +{ + XftGlyphSpec *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (XftGlyphSpec)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + { + glyphs[i].glyph = XftCharIndex(dpy, pub, chars[i].ucs4); + glyphs[i].x = chars[i].x; + glyphs[i].y = chars[i].y; + } + + XftGlyphSpecRender (dpy, op, src, pub, dst, srcx, srcy, glyphs, len); + + if (glyphs != glyphs_local) + free (glyphs); +} + +/* + * Choose which format to draw text in when drawing with fonts + * of different formats. The trick is that ARGB formats aren't + * compatible with A formats as PictOpAdd does the wrong thing, so + * fall back to an A format when presented with an ARGB and A format + */ + +#define XftIsARGBFormat(a) ((a)->depth == 32) + +static XRenderPictFormat * +XftPreferFormat (Display *dpy, XRenderPictFormat *a, XRenderPictFormat *b) +{ + XRenderPictFormat *prefer = NULL; + + if (a == b) + prefer = a; + else if (XftIsARGBFormat(a) != XftIsARGBFormat(b)) + prefer = XRenderFindStandardFormat (dpy, PictStandardA8); + else if (a->depth > b->depth) + prefer = a; + else + prefer = b; + return prefer; +} + +_X_EXPORT void +XftGlyphFontSpecRender (Display *dpy, + int op, + Picture src, + Picture dst, + int srcx, + int srcy, + _Xconst XftGlyphFontSpec *glyphs, + int nglyphs) +{ + int i, j; + XftFont *prevPublic; + XftFontInt *firstFont; + XRenderPictFormat *format; + FT_UInt missing[XFT_NMISSING]; + int nmissing; + int n; + FT_UInt g; + XftGlyph *glyph; + FT_UInt max; + int size, width; + char *char8; + unsigned short *char16; + unsigned int *char32; + unsigned int char_local[NUM_LOCAL]; + unsigned int *chars; + XGlyphElt8 *elts; + XGlyphElt8 elts_local[NUM_ELT_LOCAL]; + FcBool glyphs_loaded; + int nelt; + int x, y; + + if (!nglyphs) + return; + + /* + * Load missing glyphs. Have to load them + * one at a time in case the font changes + */ + max = 0; + glyphs_loaded = FcFalse; + g = glyphs[0].glyph; + for (i = 0; i < nglyphs; i++) + { + XftFont *pub = glyphs[i].font; + XftFontInt *font = (XftFontInt *) pub; + g = glyphs[i].glyph; + if (g > max) + max = g; + nmissing = 0; + if (XftFontCheckGlyph (dpy, pub, FcTrue, g, missing, &nmissing)) + glyphs_loaded = FcTrue; + if (nmissing) + XftFontLoadGlyphs (dpy, pub, FcTrue, missing, nmissing); + if (!font->format) + goto bail1; + if (!font->glyphset) + goto bail1; + } + + /* + * See what encoding size is needed + */ + if (max < 0x100) + { + size = sizeof (char); + width = 1; + } + else if (max < 0x10000) + { + size = sizeof (unsigned short); + width = 2; + } + else + { + size = sizeof (unsigned int); + width = 4; + } + chars = char_local; + if (nglyphs * size > NUM_LOCAL) + { + chars = malloc (nglyphs * size); + if (!chars) + goto bail1; + } + char8 = (char *) chars; + char16 = (unsigned short *) chars; + char32 = (unsigned int *) chars; + + /* + * Compute the number of glyph elts needed + */ + nelt = 1; + firstFont = NULL; + for (i = 0; i < nglyphs; i++) + { + XftFont *pub = glyphs[i].font; + XftFontInt *font = (XftFontInt *) pub; + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + if (font->glyphs[g]) + { + firstFont = font; + break; + } + } + if (i == nglyphs || !firstFont) + goto bail2; + glyph = firstFont->glyphs[g]; + format = firstFont->format; + x = glyphs[i].x + glyph->metrics.xOff; + y = glyphs[i].y + glyph->metrics.yOff; + prevPublic = NULL; + while (++i < nglyphs) + { + XftFont *pub = glyphs[i].font; + XftFontInt *font = (XftFontInt *) pub; + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + /* + * check to see if the glyph is placed where it would + * fall using the normal spacing + */ + if ((glyph = font->glyphs[g])) + { + if (pub != prevPublic || x != glyphs[i].x || y != glyphs[i].y) + { + prevPublic = pub; + if (font->format != format) + format = XftPreferFormat (dpy, font->format, format); + x = glyphs[i].x; + y = glyphs[i].y; + ++nelt; + } + x += glyph->metrics.xOff; + y += glyph->metrics.yOff; + } + } + + elts = elts_local; + if (nelt > NUM_ELT_LOCAL) + { + elts = malloc (nelt * sizeof (XGlyphElt8)); + if (!elts) + goto bail2; + } + + /* + * Generate the list of glyph elts + */ + nelt = 0; + x = y = 0; + n = 0; + j = 0; + prevPublic = NULL; + for (i = 0; i < nglyphs; i++) + { + XftFont *pub = glyphs[i].font; + XftFontInt *font = (XftFontInt *) pub; + + g = glyphs[i].glyph; + /* Substitute default for non-existant glyphs */ + if (g >= font->num_glyphs || !font->glyphs[g]) + g = 0; + if ((glyph = font->glyphs[g])) + { + if (!i || pub != prevPublic || x != glyphs[i].x || y != glyphs[i].y) + { + if (n) + { + elts[nelt].nchars = n; + nelt++; + } + elts[nelt].glyphset = font->glyphset; + elts[nelt].chars = char8 + size * j; + elts[nelt].xOff = glyphs[i].x - x; + elts[nelt].yOff = glyphs[i].y - y; + prevPublic = pub; + x = glyphs[i].x; + y = glyphs[i].y; + n = 0; + } + switch (width) { + case 1: char8[j] = (char) g; break; + case 2: char16[j] = (unsigned short) g; break; + case 4: char32[j] = (unsigned int) g; break; + } + x += glyph->metrics.xOff; + y += glyph->metrics.yOff; + j++; + n++; + } + } + if (n) + { + elts[nelt].nchars = n; + nelt++; + } + switch (width) { + case 1: + XRenderCompositeText8 (dpy, op, src, dst, format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + elts, nelt); + break; + case 2: + XRenderCompositeText16 (dpy, op, src, dst, format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + (XGlyphElt16 *) elts, nelt); + break; + case 4: + XRenderCompositeText32 (dpy, op, src, dst, format, + srcx, srcy, glyphs[0].x, glyphs[0].y, + (XGlyphElt32 *) elts, nelt); + break; + } + + if (elts != elts_local) + free (elts); +bail2: + if (chars != char_local) + free (chars); +bail1: + if (glyphs_loaded) + for (i = 0; i < nglyphs; i++) + _XftFontManageMemory (dpy, glyphs[i].font); +} + +_X_EXPORT void +XftCharFontSpecRender (Display *dpy, + int op, + Picture src, + Picture dst, + int srcx, + int srcy, + _Xconst XftCharFontSpec *chars, + int len) +{ + XftGlyphFontSpec *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (XftGlyphFontSpec)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + { + glyphs[i].font = chars[i].font; + glyphs[i].glyph = XftCharIndex(dpy, glyphs[i].font, chars[i].ucs4); + glyphs[i].x = chars[i].x; + glyphs[i].y = chars[i].y; + } + + XftGlyphFontSpecRender (dpy, op, src, dst, srcx, srcy, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender8 (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, string[i]); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender16 (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar16 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, string[i]); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender16BE (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, + (string[i*2]<<8) | string[i*2+1]); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender16LE (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, + string[i*2] | (string[i*2+1]<<8)); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender32 (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar32 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, string[i]); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender32BE (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, + (string[i*4] << 24) | + (string[i*4+1] << 16) | + (string[i*4+2] << 8) | + (string[i*4+3])); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRender32LE (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, glyphs_local[NUM_LOCAL]; + int i; + + if (len <= NUM_LOCAL) + glyphs = glyphs_local; + else + { + glyphs = malloc (len * sizeof (FT_UInt)); + if (!glyphs) + return; + } + for (i = 0; i < len; i++) + glyphs[i] = XftCharIndex (dpy, pub, + (string[i*4]) | + (string[i*4+1] << 8) | + (string[i*4+2] << 16) | + (string[i*4+3] << 24)); + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, len); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRenderUtf8 (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + int len) +{ + FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL]; + FcChar32 ucs4; + int i; + int l; + int size; + + i = 0; + glyphs = glyphs_local; + size = NUM_LOCAL; + while (len && (l = FcUtf8ToUcs4 (string, &ucs4, len)) > 0) + { + if (i == size) + { + glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); + if (!glyphs_new) + { + if (glyphs != glyphs_local) + free (glyphs); + return; + } + memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt)); + size *= 2; + if (glyphs != glyphs_local) + free (glyphs); + glyphs = glyphs_new; + } + glyphs[i++] = XftCharIndex (dpy, pub, ucs4); + string += l; + len -= l; + } + XftGlyphRender (dpy, op, src, pub, dst, + srcx, srcy, x, y, glyphs, i); + if (glyphs != glyphs_local) + free (glyphs); +} + +_X_EXPORT void +XftTextRenderUtf16 (Display *dpy, + int op, + Picture src, + XftFont *pub, + Picture dst, + int srcx, + int srcy, + int x, + int y, + _Xconst FcChar8 *string, + FcEndian endian, + int len) +{ + FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL]; + FcChar32 ucs4; + int i; + int l; + int size; + + i = 0; + glyphs = glyphs_local; + size = NUM_LOCAL; + while (len && (l = FcUtf16ToUcs4 (string, endian, &ucs4, len)) > 0) + { + if (i == size) + { + glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); + if (!glyphs_new) + { + if (glyphs != glyphs_local) + free (glyphs); + return; + } + memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt)); + size *= 2; + if (glyphs != glyphs_local) + free (glyphs); + glyphs = glyphs_new; + } + glyphs[i++] = XftCharIndex (dpy, pub, ucs4); + string += l; + len -= l; + } + XftGlyphRender (dpy, PictOpOver, src, pub, dst, + srcx, srcy, x, y, glyphs, i); + if (glyphs != glyphs_local) + free (glyphs); +} |