Flutter Impeller
typographer_context_skia.h
Go to the documentation of this file.
1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef FLUTTER_IMPELLER_TYPOGRAPHER_BACKENDS_SKIA_TYPOGRAPHER_CONTEXT_SKIA_H_
6 #define FLUTTER_IMPELLER_TYPOGRAPHER_BACKENDS_SKIA_TYPOGRAPHER_CONTEXT_SKIA_H_
7 
9 
10 namespace impeller {
11 
13  public:
14  static std::shared_ptr<TypographerContext> Make();
15 
17 
19 
20  // |TypographerContext|
21  std::shared_ptr<GlyphAtlasContext> CreateGlyphAtlasContext(
22  GlyphAtlas::Type type) const override;
23 
24  // |TypographerContext|
25  std::shared_ptr<GlyphAtlas> CreateGlyphAtlas(
26  Context& context,
28  HostBuffer& host_buffer,
29  const std::shared_ptr<GlyphAtlasContext>& atlas_context,
30  const std::vector<std::shared_ptr<TextFrame>>& text_frames)
31  const override;
32 
33  private:
34  static std::pair<std::vector<FontGlyphPair>, std::vector<Rect>>
35  CollectNewGlyphs(const std::shared_ptr<GlyphAtlas>& atlas,
36  const std::vector<std::shared_ptr<TextFrame>>& text_frames);
37 
39 
40  TypographerContextSkia& operator=(const TypographerContextSkia&) = delete;
41 };
42 
43 } // namespace impeller
44 
45 #endif // FLUTTER_IMPELLER_TYPOGRAPHER_BACKENDS_SKIA_TYPOGRAPHER_CONTEXT_SKIA_H_
GLenum type
To do anything rendering related with Impeller, you need a context.
Definition: context.h:65
Type
Describes how the glyphs are represented in the texture.
Definition: glyph_atlas.h:74
The graphics context necessary to render text.
std::shared_ptr< GlyphAtlasContext > CreateGlyphAtlasContext(GlyphAtlas::Type type) const override
static std::shared_ptr< TypographerContext > Make()
std::shared_ptr< GlyphAtlas > CreateGlyphAtlas(Context &context, GlyphAtlas::Type type, HostBuffer &host_buffer, const std::shared_ptr< GlyphAtlasContext > &atlas_context, const std::vector< std::shared_ptr< TextFrame >> &text_frames) const override