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Sweden-Number/dlls/dwrite/freetype.c

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/*
* FreeType integration
*
* Copyright 2014-2015 Nikolay Sivov for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define COBJMACROS
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_FT2BUILD_H
#include <ft2build.h>
#include FT_CACHE_H
#include FT_FREETYPE_H
#include FT_OUTLINE_H
#include FT_TRUETYPE_TABLES_H
#endif /* HAVE_FT2BUILD_H */
#include "windef.h"
#include "dwrite_2.h"
#include "wine/library.h"
#include "wine/debug.h"
#include "dwrite_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(dwrite);
#ifdef HAVE_FREETYPE
static CRITICAL_SECTION freetype_cs;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &freetype_cs,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": freetype_cs") }
};
static CRITICAL_SECTION freetype_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
static void *ft_handle = NULL;
static FT_Library library = 0;
static FTC_Manager cache_manager = 0;
static FTC_CMapCache cmap_cache = 0;
static FTC_ImageCache image_cache = 0;
typedef struct
{
FT_Int major;
FT_Int minor;
FT_Int patch;
} FT_Version_t;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f = NULL
MAKE_FUNCPTR(FT_Done_FreeType);
MAKE_FUNCPTR(FT_Done_Glyph);
MAKE_FUNCPTR(FT_Get_First_Char);
MAKE_FUNCPTR(FT_Get_Kerning);
MAKE_FUNCPTR(FT_Get_Sfnt_Table);
MAKE_FUNCPTR(FT_Glyph_Copy);
MAKE_FUNCPTR(FT_Glyph_Get_CBox);
MAKE_FUNCPTR(FT_Glyph_Transform);
MAKE_FUNCPTR(FT_Init_FreeType);
MAKE_FUNCPTR(FT_Library_Version);
MAKE_FUNCPTR(FT_Load_Glyph);
MAKE_FUNCPTR(FT_New_Memory_Face);
MAKE_FUNCPTR(FT_Outline_Copy);
MAKE_FUNCPTR(FT_Outline_Done);
MAKE_FUNCPTR(FT_Outline_Get_Bitmap);
MAKE_FUNCPTR(FT_Outline_New);
MAKE_FUNCPTR(FT_Outline_Transform);
MAKE_FUNCPTR(FT_Outline_Translate);
MAKE_FUNCPTR(FTC_CMapCache_Lookup);
MAKE_FUNCPTR(FTC_CMapCache_New);
MAKE_FUNCPTR(FTC_ImageCache_Lookup);
MAKE_FUNCPTR(FTC_ImageCache_New);
MAKE_FUNCPTR(FTC_Manager_New);
MAKE_FUNCPTR(FTC_Manager_Done);
MAKE_FUNCPTR(FTC_Manager_LookupFace);
MAKE_FUNCPTR(FTC_Manager_LookupSize);
MAKE_FUNCPTR(FTC_Manager_RemoveFaceID);
#undef MAKE_FUNCPTR
static FT_Error face_requester(FTC_FaceID face_id, FT_Library library, FT_Pointer request_data, FT_Face *face)
{
IDWriteFontFace *fontface = (IDWriteFontFace*)face_id;
IDWriteFontFileStream *stream;
IDWriteFontFile *file;
const void *data_ptr;
UINT32 index, count;
FT_Error fterror;
UINT64 data_size;
void *context;
HRESULT hr;
*face = NULL;
count = 1;
hr = IDWriteFontFace_GetFiles(fontface, &count, &file);
if (FAILED(hr))
return FT_Err_Ok;
hr = get_filestream_from_file(file, &stream);
IDWriteFontFile_Release(file);
if (FAILED(hr))
return FT_Err_Ok;
hr = IDWriteFontFileStream_GetFileSize(stream, &data_size);
if (FAILED(hr)) {
fterror = FT_Err_Invalid_Stream_Read;
goto fail;
}
hr = IDWriteFontFileStream_ReadFileFragment(stream, &data_ptr, 0, data_size, &context);
if (FAILED(hr)) {
fterror = FT_Err_Invalid_Stream_Read;
goto fail;
}
index = IDWriteFontFace_GetIndex(fontface);
fterror = pFT_New_Memory_Face(library, data_ptr, data_size, index, face);
IDWriteFontFileStream_ReleaseFileFragment(stream, context);
fail:
IDWriteFontFileStream_Release(stream);
return fterror;
}
BOOL init_freetype(void)
{
FT_Version_t FT_Version;
ft_handle = wine_dlopen(SONAME_LIBFREETYPE, RTLD_NOW, NULL, 0);
if (!ft_handle) {
WINE_MESSAGE("Wine cannot find the FreeType font library.\n");
return FALSE;
}
#define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(ft_handle, #f, NULL, 0)) == NULL){WARN("Can't find symbol %s\n", #f); goto sym_not_found;}
LOAD_FUNCPTR(FT_Done_FreeType)
LOAD_FUNCPTR(FT_Done_Glyph)
LOAD_FUNCPTR(FT_Get_First_Char)
LOAD_FUNCPTR(FT_Get_Kerning)
LOAD_FUNCPTR(FT_Get_Sfnt_Table)
LOAD_FUNCPTR(FT_Glyph_Copy)
LOAD_FUNCPTR(FT_Glyph_Get_CBox)
LOAD_FUNCPTR(FT_Glyph_Transform)
LOAD_FUNCPTR(FT_Init_FreeType)
LOAD_FUNCPTR(FT_Library_Version)
LOAD_FUNCPTR(FT_Load_Glyph)
LOAD_FUNCPTR(FT_New_Memory_Face)
LOAD_FUNCPTR(FT_Outline_Copy)
LOAD_FUNCPTR(FT_Outline_Done)
LOAD_FUNCPTR(FT_Outline_Get_Bitmap)
LOAD_FUNCPTR(FT_Outline_New)
LOAD_FUNCPTR(FT_Outline_Transform)
LOAD_FUNCPTR(FT_Outline_Translate)
LOAD_FUNCPTR(FTC_CMapCache_Lookup)
LOAD_FUNCPTR(FTC_CMapCache_New)
LOAD_FUNCPTR(FTC_ImageCache_Lookup)
LOAD_FUNCPTR(FTC_ImageCache_New)
LOAD_FUNCPTR(FTC_Manager_New)
LOAD_FUNCPTR(FTC_Manager_Done)
LOAD_FUNCPTR(FTC_Manager_LookupFace)
LOAD_FUNCPTR(FTC_Manager_LookupSize)
LOAD_FUNCPTR(FTC_Manager_RemoveFaceID)
#undef LOAD_FUNCPTR
if (pFT_Init_FreeType(&library) != 0) {
ERR("Can't init FreeType library\n");
wine_dlclose(ft_handle, NULL, 0);
ft_handle = NULL;
return FALSE;
}
pFT_Library_Version(library, &FT_Version.major, &FT_Version.minor, &FT_Version.patch);
/* init cache manager */
if (pFTC_Manager_New(library, 0, 0, 0, &face_requester, NULL, &cache_manager) != 0 ||
pFTC_CMapCache_New(cache_manager, &cmap_cache) != 0 ||
pFTC_ImageCache_New(cache_manager, &image_cache) != 0) {
ERR("Failed to init FreeType cache\n");
pFTC_Manager_Done(cache_manager);
pFT_Done_FreeType(library);
wine_dlclose(ft_handle, NULL, 0);
ft_handle = NULL;
return FALSE;
}
TRACE("FreeType version is %d.%d.%d\n", FT_Version.major, FT_Version.minor, FT_Version.patch);
return TRUE;
sym_not_found:
WINE_MESSAGE("Wine cannot find certain functions that it needs from FreeType library.\n");
wine_dlclose(ft_handle, NULL, 0);
ft_handle = NULL;
return FALSE;
}
void release_freetype(void)
{
pFTC_Manager_Done(cache_manager);
pFT_Done_FreeType(library);
}
void freetype_notify_cacheremove(IDWriteFontFace2 *fontface)
{
EnterCriticalSection(&freetype_cs);
pFTC_Manager_RemoveFaceID(cache_manager, fontface);
LeaveCriticalSection(&freetype_cs);
}
HRESULT freetype_get_design_glyph_metrics(IDWriteFontFace2 *fontface, UINT16 unitsperEm, UINT16 glyph, DWRITE_GLYPH_METRICS *ret)
{
FTC_ScalerRec scaler;
FT_Size size;
scaler.face_id = fontface;
scaler.width = unitsperEm;
scaler.height = unitsperEm;
scaler.pixel = 1;
scaler.x_res = 0;
scaler.y_res = 0;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupSize(cache_manager, &scaler, &size) == 0) {
if (pFT_Load_Glyph(size->face, glyph, FT_LOAD_NO_SCALE) == 0) {
FT_Glyph_Metrics *metrics = &size->face->glyph->metrics;
ret->leftSideBearing = metrics->horiBearingX;
ret->advanceWidth = metrics->horiAdvance;
ret->rightSideBearing = metrics->horiAdvance - metrics->horiBearingX - metrics->width;
ret->topSideBearing = metrics->vertBearingY;
ret->advanceHeight = metrics->vertAdvance;
ret->bottomSideBearing = metrics->vertAdvance - metrics->vertBearingY - metrics->height;
ret->verticalOriginY = metrics->height + metrics->vertBearingY;
}
}
LeaveCriticalSection(&freetype_cs);
return S_OK;
}
BOOL freetype_is_monospaced(IDWriteFontFace2 *fontface)
{
BOOL is_monospaced = FALSE;
FT_Face face;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0)
is_monospaced = FT_IS_FIXED_WIDTH(face);
LeaveCriticalSection(&freetype_cs);
return is_monospaced;
}
static inline void ft_vector_to_d2d_point(const FT_Vector *v, D2D1_POINT_2F *p)
{
p->x = v->x / 64.0;
p->y = v->y / 64.0;
}
/* Convert the quadratic Beziers to cubic Beziers. */
static void get_cubic_glyph_outline(const FT_Outline *outline, short point, short first_pt,
short contour, FT_Vector *cubic_control)
{
/*
The parametric eqn for a cubic Bezier is, from PLRM:
r(t) = at^3 + bt^2 + ct + r0
with the control points:
r1 = r0 + c/3
r2 = r1 + (c + b)/3
r3 = r0 + c + b + a
A quadratic Bezier has the form:
p(t) = (1-t)^2 p0 + 2(1-t)t p1 + t^2 p2
So equating powers of t leads to:
r1 = 2/3 p1 + 1/3 p0
r2 = 2/3 p1 + 1/3 p2
and of course r0 = p0, r3 = p2
*/
/* FIXME: Possible optimization in endpoint calculation
if there are two consecutive curves */
cubic_control[0] = outline->points[point-1];
if (!(outline->tags[point-1] & FT_Curve_Tag_On)) {
cubic_control[0].x += outline->points[point].x + 1;
cubic_control[0].y += outline->points[point].y + 1;
cubic_control[0].x >>= 1;
cubic_control[0].y >>= 1;
}
if (point+1 > outline->contours[contour])
cubic_control[3] = outline->points[first_pt];
else {
cubic_control[3] = outline->points[point+1];
if (!(outline->tags[point+1] & FT_Curve_Tag_On)) {
cubic_control[3].x += outline->points[point].x + 1;
cubic_control[3].y += outline->points[point].y + 1;
cubic_control[3].x >>= 1;
cubic_control[3].y >>= 1;
}
}
/* r1 = 1/3 p0 + 2/3 p1
r2 = 1/3 p2 + 2/3 p1 */
cubic_control[1].x = (2 * outline->points[point].x + 1) / 3;
cubic_control[1].y = (2 * outline->points[point].y + 1) / 3;
cubic_control[2] = cubic_control[1];
cubic_control[1].x += (cubic_control[0].x + 1) / 3;
cubic_control[1].y += (cubic_control[0].y + 1) / 3;
cubic_control[2].x += (cubic_control[3].x + 1) / 3;
cubic_control[2].y += (cubic_control[3].y + 1) / 3;
}
static short get_outline_data(const FT_Outline *outline, struct glyph_outline *ret)
{
short contour, point = 0, first_pt, count;
for (contour = 0, count = 0; contour < outline->n_contours; contour++) {
first_pt = point;
if (ret) {
ft_vector_to_d2d_point(&outline->points[point], &ret->points[count]);
ret->tags[count] = OUTLINE_POINT_START;
if (count)
ret->tags[count-1] |= OUTLINE_POINT_END;
}
point++;
count++;
while (point <= outline->contours[contour]) {
do {
if (outline->tags[point] & FT_Curve_Tag_On) {
if (ret) {
ft_vector_to_d2d_point(&outline->points[point], &ret->points[count]);
ret->tags[count] |= OUTLINE_POINT_LINE;
}
point++;
count++;
}
else {
if (ret) {
FT_Vector cubic_control[4];
get_cubic_glyph_outline(outline, point, first_pt, contour, cubic_control);
ft_vector_to_d2d_point(&cubic_control[1], &ret->points[count]);
ft_vector_to_d2d_point(&cubic_control[2], &ret->points[count+1]);
ft_vector_to_d2d_point(&cubic_control[3], &ret->points[count+2]);
ret->tags[count] = OUTLINE_POINT_BEZIER;
ret->tags[count+1] = OUTLINE_POINT_BEZIER;
ret->tags[count+2] = OUTLINE_POINT_BEZIER;
}
count += 3;
point++;
}
} while (point <= outline->contours[contour] &&
(outline->tags[point] & FT_Curve_Tag_On) ==
(outline->tags[point-1] & FT_Curve_Tag_On));
if (point <= outline->contours[contour] &&
outline->tags[point] & FT_Curve_Tag_On)
{
/* This is the closing pt of a bezier, but we've already
added it, so just inc point and carry on */
point++;
}
}
}
if (ret)
ret->tags[count-1] |= OUTLINE_POINT_END;
return count;
}
HRESULT freetype_get_glyph_outline(IDWriteFontFace2 *fontface, FLOAT emSize, UINT16 index, USHORT simulations, struct glyph_outline **ret)
{
FTC_ScalerRec scaler;
HRESULT hr = S_OK;
FT_Size size;
scaler.face_id = fontface;
scaler.width = emSize;
scaler.height = emSize;
scaler.pixel = 1;
scaler.x_res = 0;
scaler.y_res = 0;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupSize(cache_manager, &scaler, &size) == 0) {
if (pFT_Load_Glyph(size->face, index, FT_LOAD_NO_BITMAP) == 0) {
FT_Outline *outline = &size->face->glyph->outline;
short count;
FT_Matrix m;
m.xx = 1 << 16;
m.xy = simulations & DWRITE_FONT_SIMULATIONS_OBLIQUE ? (1 << 16) / 3 : 0;
m.yx = 0;
m.yy = -(1 << 16); /* flip Y axis */
pFT_Outline_Transform(outline, &m);
count = get_outline_data(outline, NULL);
hr = new_glyph_outline(count, ret);
if (hr == S_OK) {
get_outline_data(outline, *ret);
(*ret)->advance = size->face->glyph->metrics.horiAdvance >> 6;
}
}
}
LeaveCriticalSection(&freetype_cs);
return hr;
}
UINT16 freetype_get_glyphcount(IDWriteFontFace2 *fontface)
{
UINT16 count = 0;
FT_Face face;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0)
count = face->num_glyphs;
LeaveCriticalSection(&freetype_cs);
return count;
}
UINT16 freetype_get_glyphindex(IDWriteFontFace2 *fontface, UINT32 codepoint, INT charmap)
{
UINT16 glyph;
EnterCriticalSection(&freetype_cs);
if (charmap == -1)
glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint);
else {
/* special handling for symbol fonts */
if (codepoint < 0x100) codepoint += 0xf000;
glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint);
if (!glyph)
glyph = pFTC_CMapCache_Lookup(cmap_cache, fontface, charmap, codepoint - 0xf000);
}
LeaveCriticalSection(&freetype_cs);
return glyph;
}
BOOL freetype_has_kerning_pairs(IDWriteFontFace2 *fontface)
{
BOOL has_kerning_pairs = FALSE;
FT_Face face;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0)
has_kerning_pairs = FT_HAS_KERNING(face);
LeaveCriticalSection(&freetype_cs);
return has_kerning_pairs;
}
INT32 freetype_get_kerning_pair_adjustment(IDWriteFontFace2 *fontface, UINT16 left, UINT16 right)
{
INT32 adjustment = 0;
FT_Face face;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0) {
FT_Vector kern;
if (FT_HAS_KERNING(face)) {
pFT_Get_Kerning(face, left, right, FT_KERNING_UNSCALED, &kern);
adjustment = kern.x;
}
}
LeaveCriticalSection(&freetype_cs);
return adjustment;
}
static inline void ft_matrix_from_dwrite_matrix(const DWRITE_MATRIX *m, FT_Matrix *ft_matrix)
{
ft_matrix->xx = m->m11 * 0x10000;
ft_matrix->xy = -m->m21 * 0x10000;
ft_matrix->yx = -m->m12 * 0x10000;
ft_matrix->yy = m->m22 * 0x10000;
}
/* Should be used only while holding 'freetype_cs' */
static BOOL is_face_scalable(IDWriteFontFace2 *fontface)
{
FT_Face face;
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0)
return FT_IS_SCALABLE(face);
else
return FALSE;
}
void freetype_get_glyph_bbox(struct dwrite_glyphbitmap *bitmap)
{
FTC_ImageTypeRec imagetype;
FT_BBox bbox = { 0 };
FT_Glyph glyph;
EnterCriticalSection(&freetype_cs);
/* Some fonts provide mostly bitmaps and very few outlines, for example for .notdef,
disable transform if that's the case. */
if (bitmap->m) {
if (!is_face_scalable(bitmap->fontface))
bitmap->m = NULL;
}
imagetype.face_id = bitmap->fontface;
imagetype.width = 0;
imagetype.height = bitmap->emsize;
imagetype.flags = bitmap->m ? FT_LOAD_NO_BITMAP : FT_LOAD_DEFAULT;
if (pFTC_ImageCache_Lookup(image_cache, &imagetype, bitmap->index, &glyph, NULL) == 0) {
if (bitmap->m) {
FT_Glyph glyph_copy;
if (pFT_Glyph_Copy(glyph, &glyph_copy) == 0) {
FT_Matrix ft_matrix;
ft_matrix_from_dwrite_matrix(bitmap->m, &ft_matrix);
pFT_Glyph_Transform(glyph_copy, &ft_matrix, NULL);
pFT_Glyph_Get_CBox(glyph_copy, FT_GLYPH_BBOX_PIXELS, &bbox);
pFT_Done_Glyph(glyph_copy);
}
}
else
pFT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_PIXELS, &bbox);
}
LeaveCriticalSection(&freetype_cs);
/* flip Y axis */
bitmap->bbox.left = bbox.xMin;
bitmap->bbox.right = bbox.xMax;
bitmap->bbox.top = -bbox.yMax;
bitmap->bbox.bottom = -bbox.yMin;
}
static BOOL freetype_get_aliased_glyph_bitmap(struct dwrite_glyphbitmap *bitmap, FT_Glyph glyph)
{
const RECT *bbox = &bitmap->bbox;
int width = bbox->right - bbox->left;
int height = bbox->bottom - bbox->top;
if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
FT_OutlineGlyph outline = (FT_OutlineGlyph)glyph;
const FT_Outline *src = &outline->outline;
FT_Bitmap ft_bitmap;
FT_Outline copy;
ft_bitmap.width = width;
ft_bitmap.rows = height;
ft_bitmap.pitch = bitmap->pitch;
ft_bitmap.pixel_mode = FT_PIXEL_MODE_MONO;
ft_bitmap.buffer = bitmap->buf;
/* Note: FreeType will only set 'black' bits for us. */
if (pFT_Outline_New(library, src->n_points, src->n_contours, &copy) == 0) {
pFT_Outline_Copy(src, &copy);
pFT_Outline_Translate(&copy, -bbox->left << 6, bbox->bottom << 6);
pFT_Outline_Get_Bitmap(library, &copy, &ft_bitmap);
pFT_Outline_Done(library, &copy);
}
}
else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) {
FT_Bitmap *ft_bitmap = &((FT_BitmapGlyph)glyph)->bitmap;
BYTE *src = ft_bitmap->buffer, *dst = bitmap->buf;
int w = min(bitmap->pitch, (ft_bitmap->width + 7) >> 3);
int h = min(height, ft_bitmap->rows);
while (h--) {
memcpy(dst, src, w);
src += ft_bitmap->pitch;
dst += bitmap->pitch;
}
}
else
FIXME("format %x not handled\n", glyph->format);
return TRUE;
}
static BOOL freetype_get_aa_glyph_bitmap(struct dwrite_glyphbitmap *bitmap, FT_Glyph glyph)
{
const RECT *bbox = &bitmap->bbox;
int width = bbox->right - bbox->left;
int height = bbox->bottom - bbox->top;
BOOL ret = FALSE;
if (glyph->format == FT_GLYPH_FORMAT_OUTLINE) {
FT_OutlineGlyph outline = (FT_OutlineGlyph)glyph;
const FT_Outline *src = &outline->outline;
FT_Bitmap ft_bitmap;
FT_Outline copy;
ft_bitmap.width = width;
ft_bitmap.rows = height;
ft_bitmap.pitch = bitmap->pitch;
ft_bitmap.pixel_mode = FT_PIXEL_MODE_GRAY;
ft_bitmap.buffer = bitmap->buf;
/* Note: FreeType will only set 'black' bits for us. */
if (pFT_Outline_New(library, src->n_points, src->n_contours, &copy) == 0) {
pFT_Outline_Copy(src, &copy);
pFT_Outline_Translate(&copy, -bbox->left << 6, bbox->bottom << 6);
pFT_Outline_Get_Bitmap(library, &copy, &ft_bitmap);
pFT_Outline_Done(library, &copy);
}
}
else if (glyph->format == FT_GLYPH_FORMAT_BITMAP) {
FT_Bitmap *ft_bitmap = &((FT_BitmapGlyph)glyph)->bitmap;
BYTE *src = ft_bitmap->buffer, *dst = bitmap->buf;
int w = min(bitmap->pitch, (ft_bitmap->width + 7) >> 3);
int h = min(height, ft_bitmap->rows);
while (h--) {
memcpy(dst, src, w);
src += ft_bitmap->pitch;
dst += bitmap->pitch;
}
ret = TRUE;
}
else
FIXME("format %x not handled\n", glyph->format);
return ret;
}
BOOL freetype_get_glyph_bitmap(struct dwrite_glyphbitmap *bitmap)
{
FTC_ImageTypeRec imagetype;
BOOL ret = FALSE;
FT_Glyph glyph;
EnterCriticalSection(&freetype_cs);
if (bitmap->m) {
if (!is_face_scalable(bitmap->fontface))
bitmap->m = NULL;
}
imagetype.face_id = bitmap->fontface;
imagetype.width = 0;
imagetype.height = bitmap->emsize;
imagetype.flags = bitmap->m ? FT_LOAD_NO_BITMAP : FT_LOAD_DEFAULT;
if (pFTC_ImageCache_Lookup(image_cache, &imagetype, bitmap->index, &glyph, NULL) == 0) {
FT_Glyph glyph_copy;
if (bitmap->m) {
if (pFT_Glyph_Copy(glyph, &glyph_copy) == 0) {
FT_Matrix ft_matrix;
ft_matrix_from_dwrite_matrix(bitmap->m, &ft_matrix);
pFT_Glyph_Transform(glyph_copy, &ft_matrix, NULL);
glyph = glyph_copy;
}
}
else
glyph_copy = NULL;
if (bitmap->type == DWRITE_TEXTURE_CLEARTYPE_3x1)
ret = freetype_get_aa_glyph_bitmap(bitmap, glyph);
else
ret = freetype_get_aliased_glyph_bitmap(bitmap, glyph);
if (glyph_copy)
pFT_Done_Glyph(glyph_copy);
}
LeaveCriticalSection(&freetype_cs);
return ret;
}
INT freetype_get_charmap_index(IDWriteFontFace2 *fontface, BOOL *is_symbol)
{
INT charmap_index = -1;
FT_Face face;
*is_symbol = FALSE;
EnterCriticalSection(&freetype_cs);
if (pFTC_Manager_LookupFace(cache_manager, fontface, &face) == 0) {
TT_OS2 *os2 = pFT_Get_Sfnt_Table(face, ft_sfnt_os2);
FT_Int i;
if (os2) {
FT_UInt dummy;
if (os2->version == 0)
*is_symbol = pFT_Get_First_Char(face, &dummy) >= 0x100;
else
*is_symbol = !!(os2->ulCodePageRange1 & FS_SYMBOL);
}
for (i = 0; i < face->num_charmaps; i++)
if (face->charmaps[i]->encoding == FT_ENCODING_MS_SYMBOL) {
*is_symbol = TRUE;
charmap_index = i;
break;
}
}
LeaveCriticalSection(&freetype_cs);
return charmap_index;
}
INT32 freetype_get_glyph_advance(IDWriteFontFace2 *fontface, FLOAT emSize, UINT16 index, DWRITE_MEASURING_MODE mode)
{
FTC_ImageTypeRec imagetype;
FT_Glyph glyph;
INT32 advance;
imagetype.face_id = fontface;
imagetype.width = 0;
imagetype.height = emSize;
imagetype.flags = FT_LOAD_DEFAULT;
if (mode == DWRITE_MEASURING_MODE_NATURAL)
imagetype.flags |= FT_LOAD_NO_HINTING;
EnterCriticalSection(&freetype_cs);
if (pFTC_ImageCache_Lookup(image_cache, &imagetype, index, &glyph, NULL) == 0)
advance = glyph->advance.x >> 16;
else
advance = 0;
LeaveCriticalSection(&freetype_cs);
return advance;
}
#else /* HAVE_FREETYPE */
BOOL init_freetype(void)
{
return FALSE;
}
void release_freetype(void)
{
}
void freetype_notify_cacheremove(IDWriteFontFace2 *fontface)
{
}
HRESULT freetype_get_design_glyph_metrics(IDWriteFontFace2 *fontface, UINT16 unitsperEm, UINT16 glyph, DWRITE_GLYPH_METRICS *ret)
{
return E_NOTIMPL;
}
BOOL freetype_is_monospaced(IDWriteFontFace2 *fontface)
{
return FALSE;
}
HRESULT freetype_get_glyph_outline(IDWriteFontFace2 *fontface, FLOAT emSize, UINT16 index, USHORT simulations, struct glyph_outline **ret)
{
*ret = NULL;
return E_NOTIMPL;
}
UINT16 freetype_get_glyphcount(IDWriteFontFace2 *fontface)
{
return 0;
}
UINT16 freetype_get_glyphindex(IDWriteFontFace2 *fontface, UINT32 codepoint, INT charmap)
{
return 0;
}
BOOL freetype_has_kerning_pairs(IDWriteFontFace2 *fontface)
{
return FALSE;
}
INT32 freetype_get_kerning_pair_adjustment(IDWriteFontFace2 *fontface, UINT16 left, UINT16 right)
{
return 0;
}
void freetype_get_glyph_bbox(struct dwrite_glyphbitmap *bitmap)
{
memset(&bitmap->bbox, 0, sizeof(bitmap->bbox));
}
BOOL freetype_get_glyph_bitmap(struct dwrite_glyphbitmap *bitmap)
{
return FALSE;
}
INT freetype_get_charmap_index(IDWriteFontFace2 *fontface, BOOL *is_symbol)
{
*is_symbol = FALSE;
return -1;
}
INT32 freetype_get_glyph_advance(IDWriteFontFace2 *fontface, FLOAT emSize, UINT16 index, DWRITE_MEASURING_MODE mode)
{
return 0;
}
#endif /* HAVE_FREETYPE */
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