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glyph_atlas_context_skia.h
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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_GLYPH_ATLAS_CONTEXT_SKIA_H_
6 #define FLUTTER_IMPELLER_TYPOGRAPHER_BACKENDS_SKIA_GLYPH_ATLAS_CONTEXT_SKIA_H_
7
8 #include "impeller/base/backend_cast.h"
9 #include "impeller/typographer/glyph_atlas.h"
10
11 class SkBitmap;
12
13 namespace impeller {
14
15 //------------------------------------------------------------------------------
16 /// @brief A container for caching a glyph atlas across frames.
17 ///
18 class GlyphAtlasContextSkia
19 : public GlyphAtlasContext,
20 public BackendCast<GlyphAtlasContextSkia, GlyphAtlasContext> {
21 public:
22 GlyphAtlasContextSkia();
23
24 ~GlyphAtlasContextSkia() override;
25
26 //----------------------------------------------------------------------------
27 /// @brief Retrieve the previous (if any) SkBitmap instance.
28 std::shared_ptr<SkBitmap> GetBitmap() const;
29
30 void UpdateBitmap(std::shared_ptr<SkBitmap> bitmap);
31
32 private:
33 std::shared_ptr<SkBitmap> bitmap_;
34
35 GlyphAtlasContextSkia(const GlyphAtlasContextSkia&) = delete;
36
37 GlyphAtlasContextSkia& operator=(const GlyphAtlasContextSkia&) = delete;
38 };
39
40 } // namespace impeller
41
42 #endif // FLUTTER_IMPELLER_TYPOGRAPHER_BACKENDS_SKIA_GLYPH_ATLAS_CONTEXT_SKIA_H_
impeller::GlyphAtlasContextSkia::GlyphAtlasContextSkia
GlyphAtlasContextSkia()
backend_cast.h
impeller::GlyphAtlasContext
A container for caching a glyph atlas across frames.
Definition: glyph_atlas.h:145
impeller::BackendCast
Definition: backend_cast.h:13
impeller::GlyphAtlasContextSkia::UpdateBitmap
void UpdateBitmap(std::shared_ptr< SkBitmap > bitmap)
Definition: glyph_atlas_context_skia.cc:19
impeller::GlyphAtlasContextSkia::GetBitmap
std::shared_ptr< SkBitmap > GetBitmap() const
Retrieve the previous (if any) SkBitmap instance.
Definition: glyph_atlas_context_skia.cc:15
impeller::GlyphAtlasContextSkia::~GlyphAtlasContextSkia
~GlyphAtlasContextSkia() override
glyph_atlas.h
impeller
Definition: aiks_context.cc:10
impeller::GlyphAtlasContextSkia
A container for caching a glyph atlas across frames.
Definition: glyph_atlas_context_skia.h:18