path: root/gfx/skia/patches/archive/old-android-fonthost.patch

# HG changeset patch
# Parent 9ee29e4aace683ddf6cf8ddb2893cd34fcfc772c
# User James Willcox <jwillcox@mozilla.com>
diff --git a/gfx/skia/Makefile.in b/gfx/skia/Makefile.in
--- a/gfx/skia/Makefile.in
+++ b/gfx/skia/Makefile.in
@@ -305,21 +305,20 @@ CPPSRCS += \
 	SkFontHost_mac_coretext.cpp \
 	SkTime_Unix.cpp \
 	$(NULL)
 endif
 
 ifeq (android,$(MOZ_WIDGET_TOOLKIT))
 CPPSRCS += \
 	SkFontHost_FreeType.cpp \
 	SkFontHost_android.cpp \
 	SkFontHost_gamma.cpp \
-	FontHostConfiguration_android.cpp \
 	SkMMapStream.cpp \
 	SkTime_Unix.cpp \
 	$(NULL)
 
 DEFINES += -DSK_BUILD_FOR_ANDROID_NDK
 OS_CXXFLAGS += $(CAIRO_FT_CFLAGS)
 endif
 
 ifeq (gtk2,$(MOZ_WIDGET_TOOLKIT))
 CPPSRCS += \
diff --git a/gfx/skia/src/ports/SkFontHost_android.cpp b/gfx/skia/src/ports/SkFontHost_android.cpp
--- a/gfx/skia/src/ports/SkFontHost_android.cpp
+++ b/gfx/skia/src/ports/SkFontHost_android.cpp
@@ -1,38 +1,31 @@
+
 /*
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
+ * Copyright 2006 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 
 #include "SkFontHost.h"
 #include "SkDescriptor.h"
 #include "SkMMapStream.h"
 #include "SkPaint.h"
 #include "SkString.h"
 #include "SkStream.h"
 #include "SkThread.h"
 #include "SkTSearch.h"
-#include "FontHostConfiguration_android.h"
 #include <stdio.h>
 
+#define FONT_CACHE_MEMORY_BUDGET    (768 * 1024)
+
 #ifndef SK_FONT_FILE_PREFIX
     #define SK_FONT_FILE_PREFIX          "/fonts/"
 #endif
 
 SkTypeface::Style find_name_and_attributes(SkStream* stream, SkString* name,
                                            bool* isFixedWidth);
 
 static void GetFullPathForSysFonts(SkString* full, const char name[]) {
     full->set(getenv("ANDROID_ROOT"));
     full->append(SK_FONT_FILE_PREFIX);
@@ -99,21 +92,21 @@ static SkTypeface* find_best_face(const 
     if (faces[SkTypeface::kNormal] != NULL) {
         return faces[SkTypeface::kNormal];
     }
     // look for anything
     for (int i = 0; i < 4; i++) {
         if (faces[i] != NULL) {
             return faces[i];
         }
     }
     // should never get here, since the faces list should not be empty
-    SkDEBUGFAIL("faces list is empty");
+    SkASSERT(!"faces list is empty");
     return NULL;
 }
 
 static FamilyRec* find_family(const SkTypeface* member) {
     FamilyRec* curr = gFamilyHead;
     while (curr != NULL) {
         for (int i = 0; i < 4; i++) {
             if (curr->fFaces[i] == member) {
                 return curr;
             }
@@ -138,31 +131,27 @@ static SkTypeface* find_from_uniqueID(ui
         curr = curr->fNext;
     }
     return NULL;
 }
 
 /*  Remove reference to this face from its family. If the resulting family
     is empty (has no faces), return that family, otherwise return NULL
 */
 static FamilyRec* remove_from_family(const SkTypeface* face) {
     FamilyRec* family = find_family(face);
-    if (family) {
-        SkASSERT(family->fFaces[face->style()] == face);
-        family->fFaces[face->style()] = NULL;
+    SkASSERT(family->fFaces[face->style()] == face);
+    family->fFaces[face->style()] = NULL;
 
-        for (int i = 0; i < 4; i++) {
-            if (family->fFaces[i] != NULL) {    // family is non-empty
-                return NULL;
-            }
+    for (int i = 0; i < 4; i++) {
+        if (family->fFaces[i] != NULL) {    // family is non-empty
+            return NULL;
         }
-    } else {
-//        SkDebugf("remove_from_family(%p) face not found", face);
     }
     return family;  // return the empty family
 }
 
 // maybe we should make FamilyRec be doubly-linked
 static void detach_and_delete_family(FamilyRec* family) {
     FamilyRec* curr = gFamilyHead;
     FamilyRec* prev = NULL;
 
     while (curr != NULL) {
@@ -172,21 +161,21 @@ static void detach_and_delete_family(Fam
                 gFamilyHead = next;
             } else {
                 prev->fNext = next;
             }
             SkDELETE(family);
             return;
         }
         prev = curr;
         curr = next;
     }
-    SkDEBUGFAIL("Yikes, couldn't find family in our list to remove/delete");
+    SkASSERT(!"Yikes, couldn't find family in our list to remove/delete");
 }
 
 static SkTypeface* find_typeface(const char name[], SkTypeface::Style style) {
     NameFamilyPair* list = gNameList.begin();
     int             count = gNameList.count();
 
     int index = SkStrLCSearch(&list[0].fName, count, name, sizeof(list[0]));
 
     if (index >= 0) {
         return find_best_face(list[index].fFamily, style);
@@ -387,111 +376,90 @@ static bool get_name_and_style(const cha
     }
     return false;
 }
 
 // used to record our notion of the pre-existing fonts
 struct FontInitRec {
     const char*         fFileName;
     const char* const*  fNames;     // null-terminated list
 };
 
+static const char* gSansNames[] = {
+    "sans-serif", "arial", "helvetica", "tahoma", "verdana", NULL
+};
+
+static const char* gSerifNames[] = {
+    "serif", "times", "times new roman", "palatino", "georgia", "baskerville",
+    "goudy", "fantasy", "cursive", "ITC Stone Serif", NULL
+};
+
+static const char* gMonoNames[] = {
+    "monospace", "courier", "courier new", "monaco", NULL
+};
+
 // deliberately empty, but we use the address to identify fallback fonts
 static const char* gFBNames[] = { NULL };
 
+/*  Fonts must be grouped by family, with the first font in a family having the
+    list of names (even if that list is empty), and the following members having
+    null for the list. The names list must be NULL-terminated
+*/
+static const FontInitRec gSystemFonts[] = {
+    { "DroidSans.ttf",              gSansNames  },
+    { "DroidSans-Bold.ttf",         NULL        },
+    { "DroidSerif-Regular.ttf",     gSerifNames },
+    { "DroidSerif-Bold.ttf",        NULL        },
+    { "DroidSerif-Italic.ttf",      NULL        },
+    { "DroidSerif-BoldItalic.ttf",  NULL        },
+    { "DroidSansMono.ttf",          gMonoNames  },
+    /*  These are optional, and can be ignored if not found in the file system.
+        These are appended to gFallbackFonts[] as they are seen, so we list
+        them in the order we want them to be accessed by NextLogicalFont().
+     */
+    { "DroidSansArabic.ttf",        gFBNames    },
+    { "DroidSansHebrew.ttf",        gFBNames    },
+    { "DroidSansThai.ttf",          gFBNames    },
+    { "MTLmr3m.ttf",                gFBNames    }, // Motoya Japanese Font
+    { "MTLc3m.ttf",                 gFBNames    }, // Motoya Japanese Font
+    { "DroidSansJapanese.ttf",      gFBNames    },
+    { "DroidSansFallback.ttf",      gFBNames    }
+};
 
-/*  Fonts are grouped by family, with the first font in a family having the
-    list of names (even if that list is empty), and the following members having
-    null for the list. The names list must be NULL-terminated.
-*/
-static FontInitRec *gSystemFonts;
-static size_t gNumSystemFonts = 0;
-
-#define SYSTEM_FONTS_FILE "/system/etc/system_fonts.cfg"
+#define DEFAULT_NAMES   gSansNames
 
 // these globals are assigned (once) by load_system_fonts()
 static FamilyRec* gDefaultFamily;
 static SkTypeface* gDefaultNormal;
-static char** gDefaultNames = NULL;
-static uint32_t *gFallbackFonts;
 
-/*  Load info from a configuration file that populates the system/fallback font structures
-*/
-static void load_font_info() {
-//    load_font_info_xml("/system/etc/system_fonts.xml");
-    SkTDArray<FontFamily*> fontFamilies;
-    getFontFamilies(fontFamilies);
-
-    SkTDArray<FontInitRec> fontInfo;
-    bool firstInFamily = false;
-    for (int i = 0; i < fontFamilies.count(); ++i) {
-        FontFamily *family = fontFamilies[i];
-        firstInFamily = true;
-        for (int j = 0; j < family->fFileNames.count(); ++j) {
-            FontInitRec fontInfoRecord;
-            fontInfoRecord.fFileName = family->fFileNames[j];
-            if (j == 0) {
-                if (family->fNames.count() == 0) {
-                    // Fallback font
-                    fontInfoRecord.fNames = (char **)gFBNames;
-                } else {
-                    SkTDArray<const char*> names = family->fNames;
-                    const char **nameList = (const char**)
-                            malloc((names.count() + 1) * sizeof(char*));
-                    if (nameList == NULL) {
-                        // shouldn't get here
-                        break;
-                    }
-                    if (gDefaultNames == NULL) {
-                        gDefaultNames = (char**) nameList;
-                    }
-                    for (int i = 0; i < names.count(); ++i) {
-                        nameList[i] = names[i];
-                    }
-                    nameList[names.count()] = NULL;
-                    fontInfoRecord.fNames = nameList;
-                }
-            } else {
-                fontInfoRecord.fNames = NULL;
-            }
-            *fontInfo.append() = fontInfoRecord;
-        }
-    }
-    gNumSystemFonts = fontInfo.count();
-    gSystemFonts = (FontInitRec*) malloc(gNumSystemFonts * sizeof(FontInitRec));
-    gFallbackFonts = (uint32_t*) malloc((gNumSystemFonts + 1) * sizeof(uint32_t));
-    if (gSystemFonts == NULL) {
-        // shouldn't get here
-        gNumSystemFonts = 0;
-    }
-    for (size_t i = 0; i < gNumSystemFonts; ++i) {
-        gSystemFonts[i].fFileName = fontInfo[i].fFileName;
-        gSystemFonts[i].fNames = fontInfo[i].fNames;
-    }
-    fontFamilies.deleteAll();
-}
+/*  This is sized conservatively, assuming that it will never be a size issue.
+    It will be initialized in load_system_fonts(), and will be filled with the
+    fontIDs that can be used for fallback consideration, in sorted order (sorted
+    meaning element[0] should be used first, then element[1], etc. When we hit
+    a fontID==0 in the array, the list is done, hence our allocation size is
+    +1 the total number of possible system fonts. Also see NextLogicalFont().
+ */
+static uint32_t gFallbackFonts[SK_ARRAY_COUNT(gSystemFonts)+1];
 
 /*  Called once (ensured by the sentinel check at the beginning of our body).
     Initializes all the globals, and register the system fonts.
  */
 static void load_system_fonts() {
     // check if we've already be called
     if (NULL != gDefaultNormal) {
         return;
     }
 
-    load_font_info();
-
     const FontInitRec* rec = gSystemFonts;
     SkTypeface* firstInFamily = NULL;
     int fallbackCount = 0;
 
-    for (size_t i = 0; i < gNumSystemFonts; i++) {
+    for (size_t i = 0; i < SK_ARRAY_COUNT(gSystemFonts); i++) {
         // if we're the first in a new family, clear firstInFamily
         if (rec[i].fNames != NULL) {
             firstInFamily = NULL;
         }
 
         bool isFixedWidth;
         SkString name;
         SkTypeface::Style style;
 
         // we expect all the fonts, except the "fallback" fonts
@@ -515,120 +483,75 @@ static void load_system_fonts() {
             //    SkDebugf("---- adding %s as fallback[%d] fontID %d\n",
             //             rec[i].fFileName, fallbackCount, tf->uniqueID());
                 gFallbackFonts[fallbackCount++] = tf->uniqueID();
             }
 
             firstInFamily = tf;
             FamilyRec* family = find_family(tf);
             const char* const* names = rec[i].fNames;
 
             // record the default family if this is it
-            if (names == gDefaultNames) {
+            if (names == DEFAULT_NAMES) {
                 gDefaultFamily = family;
             }
             // add the names to map to this family
             while (*names) {
                 add_name(*names, family);
                 names += 1;
             }
         }
     }
 
     // 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
     gDefaultNormal = find_best_face(gDefaultFamily, SkTypeface::kNormal);
     // now terminate our fallback list with the sentinel value
     gFallbackFonts[fallbackCount] = 0;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) {
-    // lookup and record if the font is custom (i.e. not a system font)
-    bool isCustomFont = !((FamilyTypeface*)face)->isSysFont();
-    stream->writeBool(isCustomFont);
+    const char* name = ((FamilyTypeface*)face)->getUniqueString();
 
-    if (isCustomFont) {
-        SkStream* fontStream = ((FamilyTypeface*)face)->openStream();
+    stream->write8((uint8_t)face->style());
 
-        // store the length of the custom font
-        uint32_t len = fontStream->getLength();
-        stream->write32(len);
-
-        // store the entire font in the serialized stream
-        void* fontData = malloc(len);
-
-        fontStream->read(fontData, len);
-        stream->write(fontData, len);
-
-        fontStream->unref();
-        free(fontData);
-//      SkDebugf("--- fonthost custom serialize %d %d\n", face->style(), len);
-
+    if (NULL == name || 0 == *name) {
+        stream->writePackedUInt(0);
+//        SkDebugf("--- fonthost serialize null\n");
     } else {
-        const char* name = ((FamilyTypeface*)face)->getUniqueString();
-
-        stream->write8((uint8_t)face->style());
-
-        if (NULL == name || 0 == *name) {
-            stream->writePackedUInt(0);
-//          SkDebugf("--- fonthost serialize null\n");
-        } else {
-            uint32_t len = strlen(name);
-            stream->writePackedUInt(len);
-            stream->write(name, len);
-//          SkDebugf("--- fonthost serialize <%s> %d\n", name, face->style());
-        }
+        uint32_t len = strlen(name);
+        stream->writePackedUInt(len);
+        stream->write(name, len);
+//      SkDebugf("--- fonthost serialize <%s> %d\n", name, face->style());
     }
 }
 
 SkTypeface* SkFontHost::Deserialize(SkStream* stream) {
     load_system_fonts();
 
-    // check if the font is a custom or system font
-    bool isCustomFont = stream->readBool();
+    int style = stream->readU8();
 
-    if (isCustomFont) {
+    int len = stream->readPackedUInt();
+    if (len > 0) {
+        SkString str;
+        str.resize(len);
+        stream->read(str.writable_str(), len);
 
-        // read the length of the custom font from the stream
-        uint32_t len = stream->readU32();
-
-        // generate a new stream to store the custom typeface
-        SkMemoryStream* fontStream = new SkMemoryStream(len);
-        stream->read((void*)fontStream->getMemoryBase(), len);
-
-        SkTypeface* face = CreateTypefaceFromStream(fontStream);
-
-        fontStream->unref();
-
-//      SkDebugf("--- fonthost custom deserialize %d %d\n", face->style(), len);
-        return face;
-
-    } else {
-        int style = stream->readU8();
-
-        int len = stream->readPackedUInt();
-        if (len > 0) {
-            SkString str;
-            str.resize(len);
-            stream->read(str.writable_str(), len);
-
-            const FontInitRec* rec = gSystemFonts;
-            for (size_t i = 0; i < gNumSystemFonts; i++) {
-                if (strcmp(rec[i].fFileName, str.c_str()) == 0) {
-                    // backup until we hit the fNames
-                    for (int j = i; j >= 0; --j) {
-                        if (rec[j].fNames != NULL) {
-                            return SkFontHost::CreateTypeface(NULL,
-                                        rec[j].fNames[0], NULL, 0,
-                                        (SkTypeface::Style)style);
-                        }
+        const FontInitRec* rec = gSystemFonts;
+        for (size_t i = 0; i < SK_ARRAY_COUNT(gSystemFonts); i++) {
+            if (strcmp(rec[i].fFileName, str.c_str()) == 0) {
+                // backup until we hit the fNames
+                for (int j = i; j >= 0; --j) {
+                    if (rec[j].fNames != NULL) {
+                        return SkFontHost::CreateTypeface(NULL,
+                                    rec[j].fNames[0], NULL, 0, (SkTypeface::Style)style);
                     }
                 }
             }
         }
     }
     return NULL;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -697,49 +620,32 @@ size_t SkFontHost::GetFileName(SkFontID 
         }
         return size;
     } else {
         return 0;
     }
 }
 
 SkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) {
     load_system_fonts();
 
-    const SkTypeface* origTypeface = find_from_uniqueID(origFontID);
-    const SkTypeface* currTypeface = find_from_uniqueID(currFontID);
-
-    SkASSERT(origTypeface != 0);
-    SkASSERT(currTypeface != 0);
-
-    // 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();
+            return list[i+1];
         }
     }
-
-    // If we get here, currFontID was not a fallback, so we start at the
-    // beginning of our list.
-    const SkTypeface* firstTypeface = find_from_uniqueID(list[0]);
-    return find_typeface(firstTypeface, origTypeface->style())->uniqueID();
+    return list[0];
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) {
     if (NULL == stream || stream->getLength() <= 0) {
         return NULL;
     }
 
     bool isFixedWidth;
@@ -754,10 +660,11 @@ SkTypeface* SkFontHost::CreateTypefaceFr
 }
 
 SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) {
     SkStream* stream = SkNEW_ARGS(SkMMAPStream, (path));
     SkTypeface* face = SkFontHost::CreateTypefaceFromStream(stream);
     // since we created the stream, we let go of our ref() here
     stream->unref();
     return face;
 }
 
+///////////////////////////////////////////////////////////////////////////////