コード例 #1
0
ファイル: SkFontHost_android.cpp プロジェクト: bunhere/skia
SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
                                       const char familyName[],
                                       SkTypeface::Style style) {
    SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);

    load_system_fonts();

    // clip to legal style bits
    style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic);

    SkTypeface* tf = NULL;

    if (NULL != familyFace) {
        tf = find_typeface(familyFace, style);
    } else if (NULL != familyName) {
//        SkDebugf("======= familyName <%s>\n", familyName);
        tf = find_typeface(familyName, style);
    }

    if (NULL == tf) {
        tf = find_best_face(gDefaultFamily, style);
    }

    // we ref(), since the semantic is to return a new instance
    tf->ref();
    return tf;
}
コード例 #2
0
SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
                                       const char familyName[],
                                       SkTypeface::Style style) {
    load_system_fonts();

    SkAutoMutexAcquire  ac(gFamilyMutex);

    // clip to legal style bits
    style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic);

    SkTypeface* tf = NULL;

    if (NULL != familyFace) {
        tf = find_typeface(familyFace, style);
    } else if (NULL != familyName) {
        //        SkDebugf("======= familyName <%s>\n", familyName);
        tf = find_typeface(familyName, style);
    }

    if (NULL == tf) {
        tf = find_best_face(gDefaultFamily, style);
    }

    SkSafeRef(tf);
    return tf;
}
コード例 #3
0
ファイル: SkFontHost_android.cpp プロジェクト: bunhere/skia
// this function can't be called if the gFamilyHeadAndNameListMutex is already locked
static SkFontID findFallbackFontIDForChar(SkUnichar uni, SkTypeface::Style style) {
    const SkTypeface* tf = findFallbackTypefaceForChar(uni);
    if (!tf) {
        return 0;
    }
    return find_typeface(tf, style)->uniqueID();
}
コード例 #4
0
ファイル: SkFontHost_android.cpp プロジェクト: bunhere/skia
SkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) {
#ifdef SK_BUILD_FOR_ANDROID_NDK
    // Skia does not support font fallback for ndk applications in order to
    // enable clients such as WebKit to customize their font selection.
    // Clients can use GetFallbackFamilyNameForChar() to get the fallback
    // font for individual characters.
    return 0;
#else
    SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);

    load_system_fonts();

    const SkTypeface* origTypeface = find_from_uniqueID(origFontID);
    const SkTypeface* currTypeface = find_from_uniqueID(currFontID);

    SkASSERT(origTypeface != 0);
    SkASSERT(currTypeface != 0);
    SkASSERT(gFallbackFonts);

    // Our fallback list always stores the id of the plain in each fallback
    // family, so we transform currFontID to its plain equivalent.
    currFontID = find_typeface(currTypeface, SkTypeface::kNormal)->uniqueID();

    /*  First see if fontID is already one of our fallbacks. If so, return
        its successor. If fontID is not in our list, then return the first one
        in our list. Note: list is zero-terminated, and returning zero means
        we have no more fonts to use for fallbacks.
     */
    const uint32_t* list = gFallbackFonts;
    for (int i = 0; list[i] != 0; i++) {
        if (list[i] == currFontID) {
            if (list[i+1] == 0)
                return 0;
            const SkTypeface* nextTypeface = find_from_uniqueID(list[i+1]);
            return find_typeface(nextTypeface, origTypeface->style())->uniqueID();
        }
    }

    // If we get here, currFontID was not a fallback, so we start at the
    // beginning of our list. Assuming there is at least one fallback font,
    // i.e. gFallbackFonts[0] != 0.
    const SkTypeface* firstTypeface = find_from_uniqueID(list[0]);
    return find_typeface(firstTypeface, origTypeface->style())->uniqueID();
#endif
}
コード例 #5
0
static void load_system_fonts() {
    // check if we've already be called
    if (NULL != gDefaultNormal) {
        return;
    }

    SkString baseDirectory(SK_FONT_FILE_PREFIX);
    unsigned int count = 0;
    load_directory_fonts(baseDirectory, &count);

    if (0 == count) {
        SkNEW(EmptyTypeface);
    }

    // do this after all fonts are loaded. This is our default font, and it
    // acts as a sentinel so we only execute load_system_fonts() once
    static const char* gDefaultNames[] = {
#if defined(__LB_SHELL__)
        "Droid Sans",  // our preferred default
#endif
        "Arial", "Verdana", "Times New Roman", NULL
    };
    const char** names = gDefaultNames;
    while (*names) {
        SkTypeface* tf = find_typeface(*names++, SkTypeface::kNormal);
        if (tf) {
            gDefaultNormal = tf;
            break;
        }
    }
    // check if we found *something*
    if (NULL == gDefaultNormal) {
        if (NULL == gFamilyHead) {
            sk_throw();
        }
        for (int i = 0; i < 4; i++) {
            if ((gDefaultNormal = gFamilyHead->fFaces[i]) != NULL) {
                break;
            }
        }
    }
    if (NULL == gDefaultNormal) {
        sk_throw();
    }
    gFallBackTypeface = gDefaultNormal;
    gDefaultFamily = find_family(gDefaultNormal);
}
コード例 #6
0
ファイル: SkFontHost_android.cpp プロジェクト: bunhere/skia
SkTypeface* SkCreateFallbackTypefaceForChar(SkUnichar uni,
                                            SkTypeface::Style style) {
    {
        SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);
        load_system_fonts();
    }

    SkTypeface* tf = findFallbackTypefaceForChar(uni);
    if (!tf) {
        return NULL;
    }
    SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);
    tf = find_typeface(tf, style);
    // we ref(), since the semantic is to return a new instance
    tf->ref();
    return tf;
}
コード例 #7
0
static void load_system_fonts() {
    // check if we've already be called
    if (NULL != gDefaultNormal) {
//        printf("---- default font %p\n", gDefaultNormal);
        return;
    }

    SkOSFile::Iter  iter(SK_FONT_FILE_PREFIX, ".ttf");
    SkString        name;
    int             count = 0;

    while (iter.next(&name, false)) {
        SkString filename;
        GetFullPathForSysFonts(&filename, name.c_str());

        bool isFixedWidth;
        SkString realname;
        SkTypeface::Style style = SkTypeface::kNormal; // avoid uninitialized warning
        
        if (!get_name_and_style(filename.c_str(), &realname, &style, &isFixedWidth)) {
            SkDebugf("------ can't load <%s> as a font\n", filename.c_str());
            continue;
        }

//        SkDebugf("font: <%s> %d <%s>\n", realname.c_str(), style, filename.c_str());
  
        FamilyRec* family = find_familyrec(realname.c_str());
        if (family && family->fFaces[style]) {
//            SkDebugf("---- skipping duplicate typeface %s style %d\n",
//                     realname.c_str(), style);
            continue;
        }

        // this constructor puts us into the global gFamilyHead llist
        FamilyTypeface* tf = SkNEW_ARGS(FileTypeface,
                                        (style,
                                         true,  // system-font (cannot delete)
                                         family, // what family to join
                                         filename.c_str(),
                                         isFixedWidth) // filename
                                        );

        if (NULL == family) {
            add_name(realname.c_str(), tf->getFamily());
        }
        count += 1;
    }

    if (0 == count) {
        SkNEW(EmptyTypeface);
    }

    // do this after all fonts are loaded. This is our default font, and it
    // acts as a sentinel so we only execute load_system_fonts() once
    static const char* gDefaultNames[] = {
        "Arial", "Verdana", "Times New Roman", NULL
    };
    const char** names = gDefaultNames;
    while (*names) {
        SkTypeface* tf = find_typeface(*names++, SkTypeface::kNormal);
        if (tf) {
            gDefaultNormal = tf;
            break;
        }
    }
    // check if we found *something*
    if (NULL == gDefaultNormal) {
        if (NULL == gFamilyHead) {
            sk_throw();
        }
        for (int i = 0; i < 4; i++) {
            if ((gDefaultNormal = gFamilyHead->fFaces[i]) != NULL) {
                break;
            }
        }
    }
    if (NULL == gDefaultNormal) {
        sk_throw();
    }
    gFallBackTypeface = gDefaultNormal;    
    gDefaultFamily = find_family(gDefaultNormal);

//    SkDebugf("---- default %p head %p family %p\n", gDefaultNormal, gFamilyHead, gDefaultFamily);
}