2 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/text-abstraction/font-client-plugin-impl.h>
22 #include <dali/public-api/common/dali-vector.h>
23 #include <dali/public-api/common/vector-wrapper.h>
24 #include <dali/integration-api/debug.h>
27 #include <fontconfig/fontconfig.h>
30 * Conversion from Fractional26.6 to float
34 const float FROM_266 = 1.0f / 64.0f;
36 const std::string FONT_FORMAT( "TrueType" );
37 const std::string DEFAULT_FONT_FAMILY_NAME( "Tizen" );
38 const std::string DEFAULT_FONT_STYLE( "Regular" );
40 const uint32_t ELLIPSIS_CHARACTER = 0x2026;
48 namespace TextAbstraction
54 const bool FONT_FIXED_SIZE_BITMAP( true );
56 FontClient::Plugin::FontDescriptionCacheItem::FontDescriptionCacheItem( const FontFamily& fontFamily,
57 const FontStyle& fontStyle,
58 FontDescriptionId index )
59 : fontFamily( fontFamily ),
60 fontStyle( fontStyle ),
65 FontClient::Plugin::FontIdCacheItem::FontIdCacheItem( FontDescriptionId validatedFontId,
66 PointSize26Dot6 pointSize,
68 : validatedFontId( validatedFontId ),
69 pointSize( pointSize ),
74 FontClient::Plugin::CacheItem::CacheItem( FT_Face ftFace,
76 PointSize26Dot6 pointSize,
78 const FontMetrics& metrics )
79 : mFreeTypeFace( ftFace ),
81 mPointSize( pointSize ),
84 mFixedWidthPixels( 0.0f ),
85 mFixedHeightPixels( 0.0f ),
86 mIsFixedSizeBitmap( false )
90 FontClient::Plugin::CacheItem::CacheItem( FT_Face ftFace,
92 PointSize26Dot6 pointSize,
94 const FontMetrics& metrics,
97 : mFreeTypeFace( ftFace ),
99 mPointSize( pointSize ),
102 mFixedWidthPixels( fixedWidth ),
103 mFixedHeightPixels( fixedHeight ),
104 mIsFixedSizeBitmap( true )
108 FontClient::Plugin::Plugin( unsigned int horizontalDpi,
109 unsigned int verticalDpi )
110 : mFreeTypeLibrary( NULL ),
111 mDpiHorizontal( horizontalDpi ),
112 mDpiVertical( verticalDpi ),
116 mValidatedFontCache(),
117 mFontDescriptionCache( 1u ),
121 int error = FT_Init_FreeType( &mFreeTypeLibrary );
122 if( FT_Err_Ok != error )
124 DALI_LOG_ERROR( "FreeType Init error: %d\n", error );
128 FontClient::Plugin::~Plugin()
130 FT_Done_FreeType( mFreeTypeLibrary );
133 void FontClient::Plugin::SetDpi( unsigned int horizontalDpi,
134 unsigned int verticalDpi )
136 mDpiHorizontal = horizontalDpi;
137 mDpiVertical = verticalDpi;
140 void FontClient::Plugin::SetDefaultFontFamily( const FontFamily& fontFamilyName,
141 const FontStyle& fontStyle )
143 mDefaultFonts.clear();
145 FcPattern* fontFamilyPattern = CreateFontFamilyPattern( fontFamilyName,
148 FcResult result = FcResultMatch;
150 // Match the pattern.
151 FcFontSet* fontSet = FcFontSort( NULL /* use default configure */,
153 false /* don't trim */,
157 if( NULL != fontSet )
159 // Reserve some space to avoid reallocations.
160 mDefaultFonts.reserve( fontSet->nfont );
162 for( int i = 0u; i < fontSet->nfont; ++i )
164 FcPattern* fontPattern = fontSet->fonts[i];
168 // Skip fonts with no path
169 if( GetFcString( fontPattern, FC_FILE, path ) )
171 mDefaultFonts.push_back( FontDescription() );
172 FontDescription& fontDescription = mDefaultFonts.back();
174 fontDescription.path = path;
176 GetFcString( fontPattern, FC_FAMILY, fontDescription.family );
177 GetFcString( fontPattern, FC_STYLE, fontDescription.style );
181 FcFontSetDestroy( fontSet );
184 FcPatternDestroy( fontFamilyPattern );
187 void FontClient::Plugin::GetDefaultFonts( FontList& defaultFonts )
189 if( mDefaultFonts.empty() )
191 SetDefaultFontFamily( DEFAULT_FONT_FAMILY_NAME,
192 DEFAULT_FONT_STYLE );
195 defaultFonts = mDefaultFonts;
198 void FontClient::Plugin::GetSystemFonts( FontList& systemFonts )
200 if( mSystemFonts.empty() )
205 systemFonts = mSystemFonts;
208 void FontClient::Plugin::GetDescription( FontId id,
209 FontDescription& fontDescription ) const
211 for( std::vector<FontIdCacheItem>::const_iterator it = mFontIdCache.begin(),
212 endIt = mFontIdCache.end();
216 const FontIdCacheItem& item = *it;
218 if( item.fontId == id )
220 fontDescription = *( mFontDescriptionCache.begin() + item.validatedFontId );
225 DALI_LOG_ERROR( "FontClient::Plugin::GetDescription. No description found for the font ID %d\n", id );
228 PointSize26Dot6 FontClient::Plugin::GetPointSize( FontId id )
230 const FontId index = id - 1u;
233 index < mFontCache.size() )
235 return ( *( mFontCache.begin() + index ) ).mPointSize;
239 DALI_LOG_ERROR( "FontClient::Plugin::GetPointSize. Invalid font ID %d\n", id );
242 return TextAbstraction::FontClient::DEFAULT_POINT_SIZE;
245 FontId FontClient::Plugin::FindDefaultFont( Character charcode,
246 PointSize26Dot6 requestedSize,
250 bool foundColor(false);
252 // Create the list of default fonts if it has not been created.
253 if( mDefaultFonts.empty() )
255 SetDefaultFontFamily( DEFAULT_FONT_FAMILY_NAME,
256 DEFAULT_FONT_STYLE );
259 // Traverse the list of default fonts.
260 // Check for each default font if supports the character.
262 for( FontList::const_iterator it = mDefaultFonts.begin(), endIt = mDefaultFonts.end();
266 const FontDescription& description = *it;
268 FcPattern* pattern = CreateFontFamilyPattern( description.family,
271 FcResult result = FcResultMatch;
272 FcPattern* match = FcFontMatch( NULL /* use default configure */, pattern, &result );
274 FcCharSet* charSet = NULL;
275 FcPatternGetCharSet( match, FC_CHARSET, 0u, &charSet );
277 if( FcCharSetHasChar( charSet, charcode ) )
279 Vector< PointSize26Dot6 > fixedSizes;
280 GetFixedSizes( description.family,
284 const Vector< PointSize26Dot6 >::SizeType count = fixedSizes.Count();
287 // If the font is not scalable, pick the largest size <= requestedSize
288 PointSize26Dot6 size = fixedSizes[0];
289 for( unsigned int i=1; i<count; ++i )
291 if( fixedSizes[i] <= requestedSize &&
292 fixedSizes[i] > size )
294 size = fixedSizes[i];
297 requestedSize = size;
300 fontId = GetFontId( description.family,
307 BufferImage bitmap = CreateBitmap( fontId, GetGlyphIndex(fontId,charcode) );
309 Pixel::BGRA8888 == bitmap.GetPixelFormat() )
315 // Keep going unless we prefer a different (color) font
316 if( !preferColor || foundColor )
326 FontId FontClient::Plugin::GetFontId( const FontPath& path,
327 PointSize26Dot6 pointSize,
329 bool cacheDescription )
333 if( NULL != mFreeTypeLibrary )
336 if( FindFont( path, pointSize, faceIndex, foundId ) )
342 id = CreateFont( path, pointSize, faceIndex, cacheDescription );
349 FontId FontClient::Plugin::GetFontId( const FontFamily& fontFamily,
350 const FontStyle& fontStyle,
351 PointSize26Dot6 pointSize,
352 FaceIndex faceIndex )
354 // This method uses three vectors which caches:
355 // * Pairs of non validated 'fontFamily, fontStyle' and an index to a vector with paths to font file names.
356 // * The path to font file names.
357 // * The font ids of pairs 'font point size, index to the vector with paths to font file names'.
359 // 1) Checks in the cache if the pair 'fontFamily, fontStyle' has been validated before.
360 // If it was it gets an index to the vector with paths to font file names. Otherwise,
361 // retrieves using font config a path to a font file name which matches with the pair
362 // 'fontFamily, fontStyle'. The path is stored in the chache.
364 // 2) Checks in the cache if the pair 'font point size, index to the vector with paths to
365 // fon file names' exists. If exists, it gets the font id. If it doesn't it calls
366 // the GetFontId() method with the path to the font file name and the point size to
369 // The font id to be returned.
372 // Check first if the pair font family and style have been validated before.
373 FontDescriptionId validatedFontId = 0u;
375 if( !FindValidatedFont( fontFamily,
379 // Use font config to validate the font family name and font style.
380 ValidateFont( fontFamily, fontStyle, validatedFontId );
383 // Check if exists a pair 'validatedFontId, pointSize' in the cache.
384 if( !FindFont( validatedFontId, pointSize, fontId ) )
386 // Retrieve the font file name path.
387 const FontDescription& description = *( mFontDescriptionCache.begin() + validatedFontId );
389 // Retrieve the font id. Do not cache the description as it has been already cached.
390 fontId = GetFontId( description.path,
395 // Cache the pair 'validatedFontId, pointSize' to improve the following queries.
396 mFontIdCache.push_back( FontIdCacheItem( validatedFontId,
404 void FontClient::Plugin::ValidateFont( const FontFamily& fontFamily,
405 const FontStyle& fontStyle,
406 FontDescriptionId& validatedFontId )
408 // Create a font pattern.
409 FcPattern* fontFamilyPattern = CreateFontFamilyPattern( fontFamily,
412 FcResult result = FcResultMatch;
415 FcPattern* match = FcFontMatch( NULL /* use default configure */, fontFamilyPattern, &result );
419 // Get the path to the font file name.
420 FontDescription description;
421 GetFcString( match, FC_FILE, description.path );
422 GetFcString( match, FC_FAMILY, description.family );
423 GetFcString( match, FC_STYLE, description.style );
425 // Set the index to the vector of paths to font file names.
426 validatedFontId = mFontDescriptionCache.size();
428 // Add the path to the cache.
429 mFontDescriptionCache.push_back( description );
431 // Cache the index and the pair font family name, font style.
432 FontDescriptionCacheItem item( fontFamily, fontStyle, validatedFontId );
433 mValidatedFontCache.push_back( item );
435 // destroyed the matched pattern
436 FcPatternDestroy( match );
440 DALI_LOG_ERROR( "FontClient::Plugin::ValidateFont failed for font %s %s\n", fontFamily.c_str(), fontStyle.c_str() );
443 // destroy the pattern
444 FcPatternDestroy( fontFamilyPattern );
449 void FontClient::Plugin::GetFontMetrics( FontId fontId,
450 FontMetrics& metrics )
453 fontId-1 < mFontCache.size() )
455 metrics = mFontCache[fontId-1].mMetrics;
459 DALI_LOG_ERROR( "Invalid font ID %d\n", fontId );
463 GlyphIndex FontClient::Plugin::GetGlyphIndex( FontId fontId,
466 GlyphIndex index( 0 );
469 fontId-1 < mFontCache.size() )
471 FT_Face ftFace = mFontCache[fontId-1].mFreeTypeFace;
473 index = FT_Get_Char_Index( ftFace, charcode );
479 bool FontClient::Plugin::GetGlyphMetrics( GlyphInfo* array,
483 bool success( true );
485 for( unsigned int i=0; i<size; ++i )
487 FontId fontId = array[i].fontId;
490 fontId-1 < mFontCache.size() )
492 FT_Face ftFace = mFontCache[fontId-1].mFreeTypeFace;
494 #ifdef FREETYPE_BITMAP_SUPPORT
495 // Check to see if we should be loading a Fixed Size bitmap?
496 if ( mFontCache[fontId-1].mIsFixedSizeBitmap )
498 int error = FT_Load_Glyph( ftFace, array[i].index, FT_LOAD_COLOR );
499 if ( FT_Err_Ok == error )
501 array[i].width = mFontCache[ fontId -1 ].mFixedWidthPixels;
502 array[i].height = mFontCache[ fontId -1 ].mFixedHeightPixels;
503 array[i].advance = mFontCache[ fontId -1 ].mFixedWidthPixels;
504 array[i].xBearing = 0.0f;
505 array[i].yBearing = mFontCache[ fontId -1 ].mFixedHeightPixels;
509 DALI_LOG_ERROR( "FreeType Bitmap Load_Glyph error %d\n", error );
516 int error = FT_Load_Glyph( ftFace, array[i].index, FT_LOAD_DEFAULT );
518 if( FT_Err_Ok == error )
520 array[i].width = static_cast< float >( ftFace->glyph->metrics.width ) * FROM_266;
521 array[i].height = static_cast< float >( ftFace->glyph->metrics.height ) * FROM_266 ;
524 array[i].xBearing += static_cast< float >( ftFace->glyph->metrics.horiBearingX ) * FROM_266;
525 array[i].yBearing += static_cast< float >( ftFace->glyph->metrics.horiBearingY ) * FROM_266;
529 array[i].xBearing += static_cast< float >( ftFace->glyph->metrics.vertBearingX ) * FROM_266;
530 array[i].yBearing += static_cast< float >( ftFace->glyph->metrics.vertBearingY ) * FROM_266;
548 BufferImage FontClient::Plugin::CreateBitmap( FontId fontId,
549 GlyphIndex glyphIndex )
554 fontId-1 < mFontCache.size() )
556 FT_Face ftFace = mFontCache[fontId-1].mFreeTypeFace;
560 #ifdef FREETYPE_BITMAP_SUPPORT
561 // Check to see if this is fixed size bitmap
562 if ( mFontCache[fontId-1].mIsFixedSizeBitmap )
564 error = FT_Load_Glyph( ftFace, glyphIndex, FT_LOAD_COLOR );
569 error = FT_Load_Glyph( ftFace, glyphIndex, FT_LOAD_DEFAULT );
571 if( FT_Err_Ok == error )
574 error = FT_Get_Glyph( ftFace->glyph, &glyph );
576 // Convert to bitmap if necessary
577 if ( FT_Err_Ok == error )
579 if( glyph->format != FT_GLYPH_FORMAT_BITMAP )
581 error = FT_Glyph_To_Bitmap( &glyph, FT_RENDER_MODE_NORMAL, 0, 1 );
582 if ( FT_Err_Ok == error )
584 FT_BitmapGlyph bitmapGlyph = (FT_BitmapGlyph)glyph;
585 ConvertBitmap( bitmap, bitmapGlyph->bitmap );
589 DALI_LOG_ERROR( "FT_Get_Glyph Failed with error: %d\n", error );
594 ConvertBitmap( bitmap, ftFace->glyph->bitmap );
597 // Created FT_Glyph object must be released with FT_Done_Glyph
598 FT_Done_Glyph( glyph );
603 DALI_LOG_ERROR( "FT_Load_Glyph Failed with error: %d\n", error );
610 const GlyphInfo& FontClient::Plugin::GetEllipsisGlyph( PointSize26Dot6 pointSize )
612 // First look into the cache if there is an ellipsis glyph for the requested point size.
613 for( Vector<EllipsisItem>::ConstIterator it = mEllipsisCache.Begin(),
614 endIt = mEllipsisCache.End();
618 const EllipsisItem& item = *it;
620 if( fabsf( item.size - pointSize ) < Math::MACHINE_EPSILON_1000 )
622 // Use the glyph in the cache.
627 // No glyph has been found. Create one.
628 mEllipsisCache.PushBack( EllipsisItem() );
629 EllipsisItem& item = *( mEllipsisCache.End() - 1u );
631 item.size = pointSize;
633 // Find a font for the ellipsis glyph.
634 item.glyph.fontId = FindDefaultFont( ELLIPSIS_CHARACTER,
638 // Set the character index to access the glyph inside the font.
639 item.glyph.index = FT_Get_Char_Index( mFontCache[item.glyph.fontId-1].mFreeTypeFace,
640 ELLIPSIS_CHARACTER );
642 GetGlyphMetrics( &item.glyph, 1u, true );
647 void FontClient::Plugin::InitSystemFonts()
649 FcFontSet* fontSet = GetFcFontSet();
653 // Reserve some space to avoid reallocations.
654 mSystemFonts.reserve( fontSet->nfont );
656 for( int i = 0u; i < fontSet->nfont; ++i )
658 FcPattern* fontPattern = fontSet->fonts[i];
662 // Skip fonts with no path
663 if( GetFcString( fontPattern, FC_FILE, path ) )
665 mSystemFonts.push_back( FontDescription() );
666 FontDescription& fontDescription = mSystemFonts.back();
668 fontDescription.path = path;
670 GetFcString( fontPattern, FC_FAMILY, fontDescription.family );
671 GetFcString( fontPattern, FC_STYLE, fontDescription.style );
675 FcFontSetDestroy( fontSet );
679 FcPattern* FontClient::Plugin::CreateFontFamilyPattern( const FontFamily& fontFamily,
680 const FontStyle& fontStyle )
682 // create the cached font family lookup pattern
683 // a pattern holds a set of names, each name refers to a property of the font
684 FcPattern* fontFamilyPattern = FcPatternCreate();
686 // add a property to the pattern for the font family
687 FcPatternAddString( fontFamilyPattern, FC_FAMILY, reinterpret_cast<const FcChar8*>( fontFamily.c_str() ) );
689 // add a property to the pattern for the font family
690 FcPatternAddString( fontFamilyPattern, FC_STYLE, reinterpret_cast<const FcChar8*>( fontStyle.c_str() ) );
692 // Add a property of the pattern, to say we want to match TrueType fonts
693 FcPatternAddString( fontFamilyPattern , FC_FONTFORMAT, reinterpret_cast<const FcChar8*>( FONT_FORMAT.c_str() ) );
695 // modify the config, with the mFontFamilyPatterm
696 FcConfigSubstitute( NULL /* use default configure */, fontFamilyPattern, FcMatchPattern );
698 // provide default values for unspecified properties in the font pattern
699 // e.g. patterns without a specified style or weight are set to Medium
700 FcDefaultSubstitute( fontFamilyPattern );
702 return fontFamilyPattern;
705 _FcFontSet* FontClient::Plugin::GetFcFontSet() const
707 // create a new pattern.
708 // a pattern holds a set of names, each name refers to a property of the font
709 FcPattern* pattern = FcPatternCreate();
711 // create an object set used to define which properties are to be returned in the patterns from FcFontList.
712 FcObjectSet* objectSet = FcObjectSetCreate();
714 // build an object set from a list of property names
715 FcObjectSetAdd( objectSet, FC_FILE );
716 FcObjectSetAdd( objectSet, FC_FAMILY );
717 FcObjectSetAdd( objectSet, FC_STYLE );
719 // get a list of fonts
720 // creates patterns from those fonts containing only the objects in objectSet and returns the set of unique such patterns
721 FcFontSet* fontset = FcFontList( NULL /* the default configuration is checked to be up to date, and used */, pattern, objectSet );
723 // clear up the object set
726 FcObjectSetDestroy( objectSet );
728 // clear up the pattern
731 FcPatternDestroy( pattern );
737 bool FontClient::Plugin::GetFcString( const FcPattern* const pattern,
739 std::string& string )
741 FcChar8* file = NULL;
742 const FcResult retVal = FcPatternGetString( pattern, n, 0u, &file );
744 if( FcResultMatch == retVal )
746 // Have to use reinterpret_cast because FcChar8 is unsigned char*, not a const char*.
747 string.assign( reinterpret_cast<const char*>( file ) );
755 FontId FontClient::Plugin::CreateFont( const FontPath& path,
756 PointSize26Dot6 pointSize,
758 bool cacheDescription )
762 // Create & cache new font face
764 int error = FT_New_Face( mFreeTypeLibrary,
769 if( FT_Err_Ok == error )
771 // Check to see if the font contains fixed sizes?
772 if ( ftFace->num_fixed_sizes && ftFace->available_sizes )
774 // Ensure this size is available
775 for ( int i = 0; i < ftFace->num_fixed_sizes; ++i )
777 if ( static_cast<FT_Pos>(pointSize) == ftFace->available_sizes[ i ].size )
779 // Tell Freetype to use this size
780 error = FT_Select_Size( ftFace, i );
781 if ( FT_Err_Ok != error )
783 DALI_LOG_ERROR( "FreeType Select_Size error: %d\n", error );
787 float fixedWidth = static_cast< float >( ftFace->available_sizes[ i ].width );
788 float fixedHeight = static_cast< float >( ftFace->available_sizes[ i ].height );
790 // Indicate that the font is a fixed sized bitmap
791 FontMetrics metrics( fixedHeight,
797 mFontCache.push_back( CacheItem( ftFace, path, pointSize, faceIndex, metrics, fixedWidth, fixedHeight ) );
798 id = mFontCache.size();
800 if( cacheDescription )
802 FontDescription description;
803 description.path = path;
804 description.family = FontFamily( ftFace->family_name );
805 description.style = FontStyle( ftFace->style_name );
807 mFontDescriptionCache.push_back( description );
814 // Can't find this size
815 std::stringstream sizes;
816 for ( int i = 0; i < ftFace->num_fixed_sizes; ++i )
822 sizes << ftFace->available_sizes[ i ].size;
824 DALI_LOG_ERROR( "FreeType Font: %s, does not contain Bitmaps of size: %d. Available sizes are: %s\n",
825 path.c_str(), pointSize, sizes.str().c_str() );
829 error = FT_Set_Char_Size( ftFace,
835 if( FT_Err_Ok == error )
838 FT_Size_Metrics& ftMetrics = ftFace->size->metrics;
840 FontMetrics metrics( static_cast< float >( ftMetrics.ascender ) * FROM_266,
841 static_cast< float >( ftMetrics.descender ) * FROM_266,
842 static_cast< float >( ftMetrics.height ) * FROM_266,
843 static_cast< float >( ftFace->underline_position ) * FROM_266,
844 static_cast< float >( ftFace->underline_thickness ) * FROM_266 );
846 mFontCache.push_back( CacheItem( ftFace, path, pointSize, faceIndex, metrics ) );
847 id = mFontCache.size();
849 if( cacheDescription )
851 FontDescription description;
852 description.path = path;
853 description.family = FontFamily( ftFace->family_name );
854 description.style = FontStyle( ftFace->style_name );
856 mFontDescriptionCache.push_back( description );
861 DALI_LOG_ERROR( "FreeType Set_Char_Size error: %d for pointSize %d\n", error, pointSize );
867 DALI_LOG_ERROR( "FreeType New_Face error: %d for %s\n", error, path.c_str() );
873 void FontClient::Plugin::ConvertBitmap( BufferImage& destBitmap,
874 FT_Bitmap srcBitmap )
876 if( srcBitmap.width*srcBitmap.rows > 0 )
878 switch( srcBitmap.pixel_mode )
880 case FT_PIXEL_MODE_GRAY:
882 if( srcBitmap.pitch == static_cast< int >( srcBitmap.width ) )
884 destBitmap = BufferImage::New( srcBitmap.width, srcBitmap.rows, Pixel::L8 );
886 PixelBuffer* destBuffer = destBitmap.GetBuffer();
889 memcpy( destBuffer, srcBitmap.buffer, srcBitmap.width*srcBitmap.rows );
893 DALI_LOG_ERROR( "GetBuffer returns null\n" );
899 #ifdef FREETYPE_BITMAP_SUPPORT
900 case FT_PIXEL_MODE_BGRA:
902 if ( srcBitmap.pitch == static_cast< int >( srcBitmap.width << 2 ) )
904 destBitmap = BufferImage::New( srcBitmap.width, srcBitmap.rows, Pixel::BGRA8888 );
906 PixelBuffer* destBuffer = destBitmap.GetBuffer();
909 memcpy( destBuffer, srcBitmap.buffer, srcBitmap.width*srcBitmap.rows*4 );
913 DALI_LOG_ERROR( "GetBuffer returns null\n" );
921 DALI_LOG_ERROR( "FontClient Unable to create Bitmap of this PixelType\n" );
928 bool FontClient::Plugin::FindFont( const FontPath& path,
929 PointSize26Dot6 pointSize,
931 FontId& fontId ) const
934 for( std::vector<CacheItem>::const_iterator it = mFontCache.begin(),
935 endIt = mFontCache.end();
939 const CacheItem& cacheItem = *it;
941 if( cacheItem.mPointSize == pointSize &&
942 cacheItem.mFaceIndex == faceIndex &&
943 cacheItem.mPath == path )
953 bool FontClient::Plugin::FindValidatedFont( const FontFamily& fontFamily,
954 const FontStyle& fontStyle,
955 FontDescriptionId& validatedFontId )
957 validatedFontId = 0u;
959 for( std::vector<FontDescriptionCacheItem>::const_iterator it = mValidatedFontCache.begin(),
960 endIt = mValidatedFontCache.end();
964 const FontDescriptionCacheItem& item = *it;
966 if( ( fontFamily == item.fontFamily ) &&
967 ( fontStyle == item.fontStyle ) )
969 validatedFontId = item.index;
978 bool FontClient::Plugin::FindFont( FontDescriptionId validatedFontId,
979 PointSize26Dot6 pointSize,
984 for( std::vector<FontIdCacheItem>::const_iterator it = mFontIdCache.begin(),
985 endIt = mFontIdCache.end();
989 const FontIdCacheItem& item = *it;
991 if( ( validatedFontId == item.validatedFontId ) &&
992 ( pointSize == item.pointSize ) )
994 fontId = item.fontId;
1002 bool FontClient::Plugin::IsScalable( const FontPath& path )
1005 int error = FT_New_Face( mFreeTypeLibrary,
1009 if( FT_Err_Ok != error )
1011 DALI_LOG_ERROR( "FreeType Cannot check font: %s\n", path.c_str() );
1013 return ( ftFace->num_fixed_sizes == 0 );
1016 bool FontClient::Plugin::IsScalable( const FontFamily& fontFamily, const FontStyle& fontStyle )
1018 // Create a font pattern.
1019 FcPattern* fontFamilyPattern = CreateFontFamilyPattern( fontFamily,
1022 FcResult result = FcResultMatch;
1024 // match the pattern
1025 FcPattern* match = FcFontMatch( NULL /* use default configure */, fontFamilyPattern, &result );
1029 // Get the path to the font file name.
1031 GetFcString( match, FC_FILE, path );
1032 return IsScalable( path );
1034 DALI_LOG_ERROR( "FreeType Cannot check font: %s %s\n", fontFamily.c_str(), fontStyle.c_str() );
1038 void FontClient::Plugin::GetFixedSizes( const FontPath& path, Vector< PointSize26Dot6 >& sizes )
1040 // Empty the caller container
1044 int error = FT_New_Face( mFreeTypeLibrary,
1048 if( FT_Err_Ok != error )
1050 DALI_LOG_ERROR( "FreeType Cannot check font: %s\n", path.c_str() );
1053 // Fetch the number of fixed sizes available
1054 if ( ftFace->num_fixed_sizes && ftFace->available_sizes )
1056 for ( int i = 0; i < ftFace->num_fixed_sizes; ++i )
1058 sizes.PushBack( ftFace->available_sizes[ i ].size );
1063 void FontClient::Plugin::GetFixedSizes( const FontFamily& fontFamily,
1064 const FontStyle& fontStyle,
1065 Vector< PointSize26Dot6 >& sizes )
1067 // Create a font pattern.
1068 FcPattern* fontFamilyPattern = CreateFontFamilyPattern( fontFamily,
1071 FcResult result = FcResultMatch;
1073 // match the pattern
1074 FcPattern* match = FcFontMatch( NULL /* use default configure */, fontFamilyPattern, &result );
1078 // Get the path to the font file name.
1080 GetFcString( match, FC_FILE, path );
1081 return GetFixedSizes( path, sizes );
1083 DALI_LOG_ERROR( "FreeType Cannot check font: %s %s\n", fontFamily.c_str(), fontStyle.c_str() );
1086 } // namespace Internal
1088 } // namespace TextAbstraction