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      1 /*
      2  * Copyright 2008, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 // must include config.h first for webkit to fiddle with new/delete
     27 #include "config.h"
     28 #include "SkANP.h"
     29 #include "SkFontHost.h"
     30 
     31 static ANPTypeface* anp_createFromName(const char name[], ANPTypefaceStyle s) {
     32     SkTypeface* tf = SkTypeface::CreateFromName(name,
     33                                         static_cast<SkTypeface::Style>(s));
     34     return reinterpret_cast<ANPTypeface*>(tf);
     35 }
     36 
     37 static ANPTypeface* anp_createFromTypeface(const ANPTypeface* family,
     38                                            ANPTypefaceStyle s) {
     39     SkTypeface* tf = SkTypeface::CreateFromTypeface(family,
     40                                           static_cast<SkTypeface::Style>(s));
     41     return reinterpret_cast<ANPTypeface*>(tf);
     42 }
     43 
     44 static int32_t anp_getRefCount(const ANPTypeface* tf) {
     45     return tf ? tf->getRefCnt() : 0;
     46 }
     47 
     48 static void anp_ref(ANPTypeface* tf) {
     49     SkSafeRef(tf);
     50 }
     51 
     52 static void anp_unref(ANPTypeface* tf) {
     53     SkSafeUnref(tf);
     54 }
     55 
     56 static ANPTypefaceStyle anp_getStyle(const ANPTypeface* tf) {
     57     SkTypeface::Style s = tf ? tf->style() : SkTypeface::kNormal;
     58     return static_cast<ANPTypefaceStyle>(s);
     59 }
     60 
     61 static int32_t anp_getFontPath(const ANPTypeface* tf, char fileName[],
     62                                int32_t length, int32_t* index) {
     63     size_t size = SkFontHost::GetFileName(SkTypeface::UniqueID(tf), fileName,
     64                                           length, index);
     65     return static_cast<int32_t>(size);
     66 }
     67 
     68 static const char* gFontDir;
     69 #define FONT_DIR_SUFFIX     "/fonts/"
     70 
     71 static const char* anp_getFontDirectoryPath() {
     72     if (NULL == gFontDir) {
     73         const char* root = getenv("ANDROID_ROOT");
     74         size_t len = strlen(root);
     75         char* storage = (char*)malloc(len + sizeof(FONT_DIR_SUFFIX));
     76         if (NULL == storage) {
     77             return NULL;
     78         }
     79         memcpy(storage, root, len);
     80         memcpy(storage + len, FONT_DIR_SUFFIX, sizeof(FONT_DIR_SUFFIX));
     81         // save this assignment for last, so that if multiple threads call us
     82         // (which should never happen), we never return an incomplete global.
     83         // At worst, we would allocate storage for the path twice.
     84         gFontDir = storage;
     85     }
     86     return gFontDir;
     87 }
     88 
     89 ///////////////////////////////////////////////////////////////////////////////
     90 
     91 #define ASSIGN(obj, name)   (obj)->name = anp_##name
     92 
     93 void ANPTypefaceInterfaceV0_Init(ANPInterface* v) {
     94     ANPTypefaceInterfaceV0* i = reinterpret_cast<ANPTypefaceInterfaceV0*>(v);
     95 
     96     ASSIGN(i, createFromName);
     97     ASSIGN(i, createFromTypeface);
     98     ASSIGN(i, getRefCount);
     99     ASSIGN(i, ref);
    100     ASSIGN(i, unref);
    101     ASSIGN(i, getStyle);
    102     ASSIGN(i, getFontPath);
    103     ASSIGN(i, getFontDirectoryPath);
    104 }
    105