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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 The Android Open Source Project | 3 * Copyright 2011 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkFontHost.h" | 10 #include "SkFontHost.h" |
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387 | 387 |
388 // these globals are assigned (once) by load_system_fonts() | 388 // these globals are assigned (once) by load_system_fonts() |
389 static FamilyRec* gDefaultFamily; | 389 static FamilyRec* gDefaultFamily; |
390 static SkTypeface* gDefaultNormal; | 390 static SkTypeface* gDefaultNormal; |
391 | 391 |
392 /* This is sized conservatively, assuming that it will never be a size issue. | 392 /* This is sized conservatively, assuming that it will never be a size issue. |
393 It will be initialized in load_system_fonts(), and will be filled with the | 393 It will be initialized in load_system_fonts(), and will be filled with the |
394 fontIDs that can be used for fallback consideration, in sorted order (sorted | 394 fontIDs that can be used for fallback consideration, in sorted order (sorted |
395 meaning element[0] should be used first, then element[1], etc. When we hit | 395 meaning element[0] should be used first, then element[1], etc. When we hit |
396 a fontID==0 in the array, the list is done, hence our allocation size is | 396 a fontID==0 in the array, the list is done, hence our allocation size is |
397 +1 the total number of possible system fonts. Also see NextLogicalFont(). | 397 +1 the total number of possible system fonts. Also see NextLogicalTypeface()
. |
398 */ | 398 */ |
399 static uint32_t gFallbackFonts[SK_ARRAY_COUNT(gSystemFonts)+1]; | 399 static uint32_t gFallbackFonts[SK_ARRAY_COUNT(gSystemFonts)+1]; |
400 | 400 |
401 /* Called once (ensured by the sentinel check at the beginning of our body). | 401 /* Called once (ensured by the sentinel check at the beginning of our body). |
402 Initializes all the globals, and register the system fonts. | 402 Initializes all the globals, and register the system fonts. |
403 */ | 403 */ |
404 static void load_system_fonts() { | 404 static void load_system_fonts() { |
405 // check if we've already be called | 405 // check if we've already be called |
406 if (NULL != gDefaultNormal) { | 406 if (NULL != gDefaultNormal) { |
407 return; | 407 return; |
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577 } | 577 } |
578 if (index) { | 578 if (index) { |
579 *index = 0; // we don't have collections (yet) | 579 *index = 0; // we don't have collections (yet) |
580 } | 580 } |
581 return size; | 581 return size; |
582 } else { | 582 } else { |
583 return 0; | 583 return 0; |
584 } | 584 } |
585 } | 585 } |
586 | 586 |
587 SkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) { | 587 SkTypeface* SkFontHost::NextLogicalTypeface(SkFontID currFontID, SkFontID origFo
ntID) { |
588 load_system_fonts(); | 588 load_system_fonts(); |
589 | 589 |
590 /* First see if fontID is already one of our fallbacks. If so, return | 590 /* First see if fontID is already one of our fallbacks. If so, return |
591 its successor. If fontID is not in our list, then return the first one | 591 its successor. If fontID is not in our list, then return the first one |
592 in our list. Note: list is zero-terminated, and returning zero means | 592 in our list. Note: list is zero-terminated, and returning zero means |
593 we have no more fonts to use for fallbacks. | 593 we have no more fonts to use for fallbacks. |
594 */ | 594 */ |
595 const uint32_t* list = gFallbackFonts; | 595 const uint32_t* list = gFallbackFonts; |
596 for (int i = 0; list[i] != 0; i++) { | 596 for (int i = 0; list[i] != 0; i++) { |
597 if (list[i] == currFontID) { | 597 if (list[i] == currFontID) { |
598 return list[i+1]; | 598 return SkSafeRef(find_from_uniqueID(list[i+1])); |
599 } | 599 } |
600 } | 600 } |
601 return list[0]; | 601 return SkSafeRef(list[0]); |
602 } | 602 } |
603 | 603 |
604 /////////////////////////////////////////////////////////////////////////////// | 604 /////////////////////////////////////////////////////////////////////////////// |
605 | 605 |
606 SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { | 606 SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { |
607 if (NULL == stream || stream->getLength() <= 0) { | 607 if (NULL == stream || stream->getLength() <= 0) { |
608 return NULL; | 608 return NULL; |
609 } | 609 } |
610 | 610 |
611 SkTypeface::Style style; | 611 SkTypeface::Style style; |
612 if (find_name_and_attributes(stream, NULL, &style, NULL)) { | 612 if (find_name_and_attributes(stream, NULL, &style, NULL)) { |
613 return SkNEW_ARGS(StreamTypeface, (style, false, NULL, stream)); | 613 return SkNEW_ARGS(StreamTypeface, (style, false, NULL, stream)); |
614 } else { | 614 } else { |
615 return NULL; | 615 return NULL; |
616 } | 616 } |
617 } | 617 } |
618 | 618 |
619 SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { | 619 SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { |
620 SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path)); | 620 SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path)); |
621 return stream.get() ? SkFontHost::CreateTypefaceFromStream(stream) : NULL; | 621 return stream.get() ? SkFontHost::CreateTypefaceFromStream(stream) : NULL; |
622 } | 622 } |
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