| #Topic Image |
| #Alias Image_Reference |
| |
| #Class SkImage |
| |
| SkImage is an abstraction for drawing a rectangle of pixels, though the |
| particular type of image could be actually storing its data on the GPU, or |
| as drawing commands (picture or PDF or otherwise), ready to be played back |
| into another canvas. |
| The content of SkImage is always immutable, though the actual storage may |
| change, if for example that image can be re-created via encoded data or |
| other means. |
| SkImage always has a non-zero dimensions. If there is a request to create a new |
| image, either directly or via SkSurface, and either of the requested dimensions |
| are zero, then nullptr will be returned. |
| |
| #Topic Overview |
| |
| #Subtopic Subtopics |
| #ToDo manually add subtopics ## |
| #Table |
| #Legend |
| # topics # description ## |
| #Legend ## |
| #Table ## |
| ## |
| |
| #Subtopic Structs |
| #Table |
| #Legend |
| # description # struct ## |
| #Legend ## |
| # DeferredTextureImageUsageParams # ## |
| #Table ## |
| #Subtopic ## |
| |
| #Subtopic Member_Functions |
| #Table |
| #Legend |
| # description # function ## |
| #Legend ## |
| # MakeFromAHardwareBuffer # ## |
| # MakeBackendTextureFromSkImage # ## |
| # MakeCrossContextFromEncoded # ## |
| # MakeFromAHardwareBuffer # ## |
| # MakeFromAdoptedTexture # ## |
| # MakeFromBitmap # ## |
| # MakeFromDeferredTextureImageData # ## |
| # MakeFromEncoded # ## |
| # MakeFromGenerator # ## |
| # MakeFromNV12TexturesCopy # ## |
| # MakeFromPicture # ## |
| # MakeFromRaster # ## |
| # MakeFromTexture # ## |
| # MakeFromYUVTexturesCopy # ## |
| # MakeRasterCopy # ## |
| # MakeRasterData # ## |
| # alphaType # ## |
| # asLegacyBitmap # ## |
| # bounds # ## |
| # colorSpace # ## |
| # dimensions # ## |
| # encodeToData # ## |
| # getDeferredTextureImageData # ## |
| # getTexture # ## |
| # getTextureHandle # ## |
| # height # ## |
| # isAlphaOnly # ## |
| # isLazyGenerated # ## |
| # isOpaque # ## |
| # isTextureBacked # ## |
| # isValid # ## |
| # makeColorSpace # ## |
| # makeNonTextureImage # ## |
| # makeShader # ## |
| # makeSubset # ## |
| # makeTextureImage # ## |
| # makeWithFilter # ## |
| # peekPixels # ## |
| # readPixels # ## |
| # refColorSpace # ## |
| # refEncodedData # ## |
| # scalePixels # ## |
| # toString # ## |
| # uniqueID # ## |
| # width # ## |
| #Table ## |
| #Subtopic ## |
| |
| #Topic ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Struct DeferredTextureImageUsageParams |
| |
| #Code |
| #ToDo fill this in manually ## |
| ## |
| |
| Drawing parameters for which a deferred texture image data should be optimized. */ |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method DeferredTextureImageUsageParams(const SkMatrix matrix, const SkFilterQuality quality, |
| int preScaleMipLevel) |
| |
| #Param matrix incomplete ## |
| #Param quality incomplete ## |
| #Param preScaleMipLevel incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| #Member SkMatrix fMatrix |
| ## |
| |
| #Member SkFilterQuality fQuality |
| ## |
| |
| #Member int fPreScaleMipLevel |
| ## |
| |
| #Struct DeferredTextureImageUsageParams ## |
| |
| #Typedef SkImageInfo Info |
| |
| ## |
| |
| #Typedef void* ReleaseContext |
| |
| ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeRasterCopy(const SkPixmap& pixmap) |
| |
| #Param pixmap incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeRasterData(const Info& info, sk_sp<SkData> pixels, size_t rowBytes) |
| |
| #Param info incomplete ## |
| #Param pixels incomplete ## |
| #Param rowBytes incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Typedef void (*RasterReleaseProc)(const void* pixels, ReleaseContext) |
| |
| ## |
| |
| #Method static sk_sp<SkImage> MakeFromRaster(const SkPixmap& pixmap, |
| RasterReleaseProc rasterReleaseProc, |
| ReleaseContext releaseContext) |
| |
| Return a new Image referencing the specified pixels. These must remain valid and unchanged |
| until the specified release-proc is called, indicating that Skia no longer has a reference |
| to the pixels. |
| Returns nullptr if the requested pixmap info is unsupported. |
| |
| #Param pixmap incomplete ## |
| #Param rasterReleaseProc incomplete ## |
| #Param releaseContext incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromBitmap(const SkBitmap& bitmap) |
| |
| Construct a new image from the specified bitmap. If the bitmap is marked immutable, and |
| its pixel memory is shareable, it may be shared instead of copied. |
| |
| #Param bitmap incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromGenerator(std::unique_ptr<SkImageGenerator> imageGenerator, |
| const SkIRect* subset = nullptr) |
| |
| Construct a new SkImage based on the given ImageGenerator. Returns nullptr on error. |
| This function will always take ownership of the passed generator. |
| If a subset is specified, it must be contained within the generator's bounds. |
| |
| #Param imageGenerator incomplete ## |
| #Param subset incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromEncoded(sk_sp<SkData> encoded, const SkIRect* subset = nullptr) |
| |
| Construct a new SkImage based on the specified encoded data. Returns nullptr on failure, |
| which can mean that the format of the encoded data was not recognized/supported. |
| If a subset is specified, it must be contained within the encoded data's bounds. |
| |
| #Param encoded incomplete ## |
| #Param subset incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Typedef void (*TextureReleaseProc)(ReleaseContext releaseContext) |
| |
| ## |
| |
| #Method static sk_sp<SkImage> MakeFromTexture(GrContext* context, |
| const GrBackendTexture& backendTexture, |
| GrSurfaceOrigin origin, |
| SkAlphaType alphaType, |
| sk_sp<SkColorSpace> colorSpace) |
| |
| Create a new image from the specified descriptor. Note - the caller is responsible for |
| managing the lifetime of the underlying platform texture. |
| Will return nullptr if the specified back-end texture is unsupported. |
| |
| #Param context incomplete ## |
| #Param backendTexture incomplete ## |
| #Param origin incomplete ## |
| #Param alphaType incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromTexture(GrContext* context, |
| const GrBackendTexture& backendTexture, |
| GrSurfaceOrigin origin, |
| SkAlphaType alphaType, |
| sk_sp<SkColorSpace> colorSpace, |
| TextureReleaseProc textureReleaseProc, |
| ReleaseContext releaseContext) |
| |
| Create a new image from the GrBackendTexture. The underlying platform texture must stay |
| valid and unaltered until the specified release-proc is invoked, indicating that Skia |
| no longer is holding a reference to it. |
| Will return nullptr if the specified back-end texture is unsupported. |
| |
| #Param context incomplete ## |
| #Param backendTexture incomplete ## |
| #Param origin incomplete ## |
| #Param alphaType incomplete ## |
| #Param colorSpace incomplete ## |
| #Param textureReleaseProc incomplete ## |
| #Param releaseContext incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeCrossContextFromEncoded(GrContext* context, sk_sp<SkData> data, |
| bool buildMips, |
| SkColorSpace* dstColorSpace) |
| |
| Decodes and uploads the encoded data to a GPU backed image using the supplied GrContext. |
| That image can be safely used by other GrContexts, across thread boundaries. The GrContext |
| used here, and the ones used to draw this image later must be in the same OpenGL share group, |
| or otherwise be able to share resources. |
| When the image's ref count reaches zero, the original GrContext will destroy the texture, |
| asynchronously. |
| The texture will be decoded and uploaded to be suitable for use with surfaces that have the |
| supplied destination color space. The color space of the image itself will be determined |
| from the encoded data. |
| |
| #Param context incomplete ## |
| #Param data incomplete ## |
| #Param buildMips incomplete ## |
| #Param dstColorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromAdoptedTexture(GrContext* context, |
| const GrBackendTexture& backendTexture, |
| GrSurfaceOrigin surfaceOrigin, |
| SkAlphaType alphaType = kPremul_SkAlphaType, |
| sk_sp<SkColorSpace> colorSpace = nullptr) |
| |
| Create a new image from the specified descriptor. Note - Skia will delete or recycle the |
| texture when the image is released. |
| Will return nullptr if the specified back-end texture is unsupported. |
| |
| #Param context incomplete ## |
| #Param backendTexture incomplete ## |
| #Param surfaceOrigin incomplete ## |
| #Param alphaType incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromYUVTexturesCopy(GrContext* context, SkYUVColorSpace yuvColorSpace, |
| const GrBackendObject yuvTextureHandles[3], |
| const SkISize yuvSizes[3], |
| GrSurfaceOrigin surfaceOrigin, |
| sk_sp<SkColorSpace> colorSpace = nullptr) |
| |
| Create a new image by copying the pixels from the specified y, u, v textures. The data |
| from the textures is immediately ingested into the image and the textures can be modified or |
| deleted after the function returns. The image will have the dimensions of the y texture. |
| |
| #Param context incomplete ## |
| #Param yuvColorSpace incomplete ## |
| #Param yuvTextureHandles incomplete ## |
| #Param yuvSizes incomplete ## |
| #Param surfaceOrigin incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromNV12TexturesCopy(GrContext* context, |
| SkYUVColorSpace yuvColorSpace, |
| const GrBackendObject nv12TextureHandles[2], |
| const SkISize nv12Sizes[2], |
| GrSurfaceOrigin surfaceOrigin, |
| sk_sp<SkColorSpace> colorSpace = nullptr) |
| |
| Create a new image by copying the pixels from the specified y and UV_Mapping. The data |
| from the textures is immediately ingested into the image and the textures can be modified or |
| deleted after the function returns. The image will have the dimensions of the y texture. |
| |
| #Param context incomplete ## |
| #Param yuvColorSpace incomplete ## |
| #Param nv12TextureHandles incomplete ## |
| #Param nv12Sizes incomplete ## |
| #Param surfaceOrigin incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Enum BitDepth |
| |
| #Code |
| enum BitDepth { |
| kU8, |
| kF16, |
| }; |
| ## |
| |
| #Const kU8 0 |
| ## |
| #Const kF16 1 |
| ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Enum ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromPicture(sk_sp<SkPicture> picture, const SkISize& dimensions, |
| const SkMatrix* matrix, const SkPaint* paint, |
| BitDepth bitDepth, |
| sk_sp<SkColorSpace> colorSpace) |
| |
| Create a new image from the specified picture. |
| On creation of the SkImage, snap the SkPicture to a particular BitDepth and SkColorSpace. |
| |
| #Param picture incomplete ## |
| #Param dimensions incomplete ## |
| #Param matrix incomplete ## |
| #Param paint incomplete ## |
| #Param bitDepth incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromAHardwareBuffer(AHardwareBuffer* hardwareBuffer, |
| SkAlphaType alphaType = kPremul_SkAlphaType, |
| sk_sp<SkColorSpace> colorSpace = nullptr) |
| |
| Create a new image from the an Android hardware buffer. |
| The new image takes a reference on the buffer. |
| |
| Only available on Android, when __ANDROID_API__ is defined to be 26 or greater. |
| |
| #Param hardwareBuffer incomplete ## |
| #Param alphaType incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromAHardwareBuffer(AHardwareBuffer* hardwareBuffer, |
| SkAlphaType alphaType = kPremul_SkAlphaType, |
| sk_sp<SkColorSpace> colorSpace = nullptr) |
| |
| Create a new image from the an Android hardware buffer. |
| The new image takes a reference on the buffer. |
| |
| #Param hardwareBuffer incomplete ## |
| #Param alphaType incomplete ## |
| #Param colorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method int width() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method int height() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method SkISize dimensions() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method SkIRect bounds() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method uint32_t uniqueID() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method SkAlphaType alphaType() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method SkColorSpace* colorSpace() const |
| |
| Returns Color_Space of Image. Color_Space may have been a parameter when |
| Image was created, or may have been parsed from encoded data. Skia may not be |
| able to draw image respecting returned Color_Space or draw into Surface with |
| returned Color_Space. |
| |
| #Return Color_Space Image was created with, or nullptr ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkColorSpace> refColorSpace() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool isAlphaOnly() const |
| |
| Returns true fi the image will be drawn as a mask, with no intrinsic color of its own. |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool isOpaque() const |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkShader> makeShader(SkShader::TileMode tileMode1, SkShader::TileMode tileMode2, |
| const SkMatrix* localMatrix = nullptr) const |
| |
| #Param tileMode1 incomplete ## |
| #Param tileMode2 incomplete ## |
| #Param localMatrix incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkShader> makeShader(const SkMatrix* localMatrix = nullptr) const |
| |
| Helper version of makeShader() that specifies SkShader::kClamp_TileMode. |
| |
| #Param localMatrix incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool peekPixels(SkPixmap* pixmap) const |
| |
| If the image has direct access to its pixels (i.e. they are in local RAM) |
| return true, and if not null, return in the pixmap parameter the info about the |
| images pixels. |
| On failure, return false and ignore the pixmap parameter. |
| |
| #Param pixmap incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method GrTexture* getTexture() const |
| |
| DEPRECATED - |
| #Private |
| currently used by Canvas2DLayerBridge in Chromium. |
| ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool isTextureBacked() const |
| |
| Returns true if the image is texture backed. |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool isValid(GrContext* context) const |
| |
| Returns true if Image can be drawn. If context |
| is nullptr, tests if Image draws on Raster_Surface; Otherwise, tests if Image |
| draws on GPU_Surface associated with context. |
| |
| Texture-backed images may become invalid if their underlying GrContext is abandoned. Some |
| generator-backed images may be invalid for CPU and/or GPU. |
| |
| #Param context incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method GrBackendObject getTextureHandle(bool flushPendingGrContextIO, |
| GrSurfaceOrigin* origin = nullptr) const |
| |
| Retrieves the back-end API handle of the texture. If flushPendingGrContextIO then the |
| GrContext will issue to the back-end API any deferred I/O operations on the texture before |
| returning. |
| If 'origin' is supplied it will be filled in with the origin of the content drawn |
| into the image. |
| |
| #Param flushPendingGrContextIO incomplete ## |
| #Param origin incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Enum CachingHint |
| |
| #Code |
| enum CachingHint { |
| kAllow_CachingHint, |
| kDisallow_CachingHint, |
| }; |
| ## |
| |
| Hints to image calls where the system might cache computed intermediates (e.g. the results |
| of decoding or a read-back from the GPU. Passing kAllow_CachingHint signals that the system's default |
| behavior is fine. Passing kDisallow_CachingHint signals that caching should be avoided. |
| |
| #Const kAllow_CachingHint 0 |
| ## |
| #Const kDisallow_CachingHint 1 |
| ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Enum ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes, |
| int srcX, int srcY, CachingHint cachingHint = kAllow_CachingHint) const |
| |
| Copy the pixels from the image into the specified buffer (dstPixels + dstRowBytes), |
| converting them into the requested format (dstInfo). The image pixels are read |
| starting at the specified (srcX, srcY) location. |
| dstInfo and (srcX, srcY) offset specifies a source rectangle: |
| #Code |
| SkRect srcR; |
| srcR.setXYWH(srcX, srcY, dstInfo.width(), dstInfo.height()); |
| ## |
| |
| The source rectangle is intersected with the bounds of the image. If this intersection is not empty, |
| then we have two sets of pixels (of equal size). Replace dstPixels with the |
| corresponding Image pixels, performing any Color_Type/Alpha_Type transformations needed |
| (in the case where Image and dstInfo have different Color_Types or Alpha_Types). |
| This call can fail, returning false, for several reasons: |
| if source rectangle does not intersect the image bounds; |
| if the requested Color_Type/Alpha_Type cannot be converted from the image's types. |
| |
| #Param dstInfo incomplete ## |
| #Param dstPixels incomplete ## |
| #Param dstRowBytes incomplete ## |
| #Param srcX incomplete ## |
| #Param srcY incomplete ## |
| #Param cachingHint incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool readPixels(const SkPixmap& dst, int srcX, int srcY, |
| CachingHint cachingHint = kAllow_CachingHint) const |
| |
| #Param dst incomplete ## |
| #Param srcX incomplete ## |
| #Param srcY incomplete ## |
| #Param cachingHint incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool scalePixels(const SkPixmap& dst, SkFilterQuality filterQuality, |
| CachingHint cachingHint = kAllow_CachingHint) const |
| |
| Copies Image pixels into dst, converting to dst Color_Type and Alpha_Type. |
| If the conversion cannot be performed, false is returned. |
| If dst dimensions differ from Image dimensions, Image is scaled, applying |
| filterQuality. |
| |
| #Param dst incomplete ## |
| #Param filterQuality incomplete ## |
| #Param cachingHint incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkData> encodeToData(SkEncodedImageFormat encodedImageFormat, int quality) const |
| |
| Encode the image's pixels and return the result as SkData. |
| If the image type cannot be encoded, or the requested encoder format is |
| not supported, this will return nullptr. |
| |
| #Param encodedImageFormat incomplete ## |
| #Param quality incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkData> encodeToData(SkPixelSerializer* pixelSerializer = nullptr) const |
| |
| Encodes Image and returns result as SkData. Will reuse existing encoded data |
| if present, as returned by refEncodedData. pixelSerializer validates existing |
| encoded data, and encodes Image when existing encoded data is missing or |
| invalid. |
| |
| Passing nullptr for pixelSerializer selects default serialization which |
| accepts all data and encodes to PNG. |
| |
| Returns nullptr if existing encoded data is missing or invalid and |
| encoding fails. |
| |
| #Param pixelSerializer incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkData> refEncodedData() const |
| |
| If the image already has its contents in encoded form (e.g. PNG or JPEG), return that |
| as SkData. If the image does not already has its contents in encoded form, return nullptr. |
| |
| To force the image to return its contents as encoded data, call encodeToData. |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method const char* toString(SkString* string) const |
| |
| #Param string incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkImage> makeSubset(const SkIRect& subset) const |
| |
| Return a new image that is a subset of this image. The underlying implementation may |
| share the pixels, or it may make a copy. |
| If subset does not intersect the bounds of this image, or the copy/share cannot be made, |
| nullptr will be returned. |
| |
| #Param subset incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkImage> makeTextureImage(GrContext* context, SkColorSpace* dstColorSpace) const |
| |
| Ensures that an image is backed by a texture (when GrContext is non-null), suitable for use |
| with surfaces that have the supplied destination color space. If no transformation is |
| required, the returned image may be the same as this image. If this image is from a |
| different GrContext, this will fail. |
| |
| #Param context incomplete ## |
| #Param dstColorSpace incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkImage> makeNonTextureImage() const |
| |
| If the image is texture-backed this will make a raster copy of it (or nullptr if reading back |
| the pixels fails). Otherwise, it returns the original image. |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkImage> makeWithFilter(const SkImageFilter* filter, const SkIRect& subset, |
| const SkIRect& clipBounds, SkIRect* outSubset, |
| SkIPoint* offset) const |
| |
| Apply a given image filter to this image, and return the filtered result. |
| The subset represents the active portion of this image. The return value is similarly an |
| SkImage, with an active subset (outSubset). This is usually used with texture-backed |
| images, where the texture may be approx-match and thus larger than the required size. |
| clipBounds constrains the device-space extent of the image, stored in outSubset. |
| offset is storage, set to the amount to translate the result when drawn. |
| If the result image cannot be created, or the result would be transparent black, null |
| is returned, in which case the offset and outSubset parameters should be ignored by the |
| caller. |
| |
| #Param filter incomplete ## |
| #Param subset incomplete ## |
| #Param clipBounds incomplete ## |
| #Param outSubset incomplete ## |
| #Param offset incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method size_t getDeferredTextureImageData(const GrContextThreadSafeProxy& contextThreadSafeProxy, |
| const DeferredTextureImageUsageParams deferredTextureImageUsageParams[], |
| int paramCnt, |
| void* buffer, |
| SkColorSpace* dstColorSpace = nullptr, |
| SkColorType dstColorType = kN32_SkColorType) const |
| |
| This method allows clients to capture the data necessary to turn a SkImage into a texture- |
| backed image. If the original image is codec-backed this will decode into a format optimized |
| for the context represented by the proxy. This method is thread safe with respect to the |
| GrContext whence the proxy came. Clients allocate and manage the storage of the deferred |
| texture data and control its lifetime. No cleanup is required, thus it is safe to simply free |
| the memory out from under the data. |
| |
| The same method is used both for getting the size necessary for uploading |
| and retrieving texture data. The deferredTextureImageUsageParams array represents the set of |
| draws over which to optimize the texture data prior to uploading. |
| |
| When called with a null buffer this returns the size that the client must allocate in order |
| to create deferred texture data for this image (or zero if this is an inappropriate |
| candidate). The buffer allocated by the client should be 8 byte aligned. |
| When buffer is not null this fills in the deferred texture data for this image in the |
| provided buffer (assuming this is an appropriate candidate image and the buffer is |
| appropriately aligned). Upon success the size written is returned, otherwise 0. |
| dstColorSpace is the color space of the surface where this texture will ultimately be used. |
| If the method determines that Mip_Maps are needed, this helps determine the correct strategy |
| for building them (gamma-correct or not). |
| |
| dstColorType is the color type of the surface where this texture will ultimately be used. |
| This determines the format with which the image will be uploaded to the GPU. If dstColorType |
| does not support color spaces (low bit depth types such as kARGB_4444_SkColorType), then dstColorSpace |
| must be null. |
| |
| #Param contextThreadSafeProxy incomplete ## |
| #Param deferredTextureImageUsageParams incomplete ## |
| #Param paramCnt incomplete ## |
| #Param buffer incomplete ## |
| #Param dstColorSpace incomplete ## |
| #Param dstColorType incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static sk_sp<SkImage> MakeFromDeferredTextureImageData(GrContext* context, const void* data, |
| SkBudgeted budgeted) |
| |
| Returns a texture-backed image from data produced in SkImage::getDeferredTextureImageData. |
| The context must be the context that provided the proxy passed to |
| getDeferredTextureImageData. |
| |
| #Param context incomplete ## |
| #Param data incomplete ## |
| #Param budgeted incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| #Typedef std::function<void(GrBackendTexture)> BackendTextureReleaseProc |
| |
| ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method static bool MakeBackendTextureFromSkImage(GrContext* context, |
| sk_sp<SkImage> image, |
| GrBackendTexture* backendTexture, |
| BackendTextureReleaseProc* backendTextureReleaseProc) |
| |
| Creates a GrBackendTexture from the provided SkImage. Returns true on success. The |
| GrBackendTexture and BackendTextureReleaseProc are populated on success. It is the callers |
| responsibility to call the BackendTextureReleaseProc once they have deleted the texture. |
| Note that the BackendTextureReleaseProc allows Skia to clean up auxiliary data related |
| to the GrBackendTexture, and is not a substitute for the client deleting the GrBackendTexture |
| themselves. |
| |
| If image is both texture backed and singly referenced; that is, its only |
| reference was transferred using std::move(): image is returned in backendTexture |
| without conversion or making a copy. |
| |
| If the SkImage is not texture backed, this function will generate a texture with the image's |
| contents and return that. |
| |
| #Param context incomplete ## |
| #Param image incomplete ## |
| #Param backendTexture incomplete ## |
| #Param backendTextureReleaseProc incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Enum LegacyBitmapMode |
| |
| #Code |
| enum LegacyBitmapMode { |
| kRO_LegacyBitmapMode, |
| kRW_LegacyBitmapMode, |
| }; |
| ## |
| |
| Helper functions to convert to SkBitmap |
| |
| #Const kRO_LegacyBitmapMode 0 |
| ## |
| #Const kRW_LegacyBitmapMode 1 |
| ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Enum ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool asLegacyBitmap(SkBitmap* bitmap, LegacyBitmapMode legacyBitmapMode) const |
| |
| Attempt to create a bitmap with the same pixels as the image. The result will always be |
| a raster-backed bitmap (texture-backed bitmaps are DEPRECATED, and not supported here). |
| If the mode is kRO_LegacyBitmapMode (read-only), the resulting bitmap will be marked as immutable. |
| On success, returns true. On failure, returns false and the bitmap parameter will be reset |
| to empty. |
| |
| #Param bitmap incomplete ## |
| #Param legacyBitmapMode incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method bool isLazyGenerated() const |
| |
| Returns true if Image is backed by an image-generator or other service that creates |
| and caches its pixels or texture on-demand. |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| # ------------------------------------------------------------------------------ |
| |
| #Method sk_sp<SkImage> makeColorSpace(sk_sp<SkColorSpace> target, |
| SkTransferFunctionBehavior premulBehavior) const |
| |
| If target is supported, returns an SkImage in target color space. |
| Otherwise, returns nullptr. |
| This will leave the image as is if it already in target color space. |
| Otherwise, it will convert the pixels from Image color space to target |
| color space. If this->colorSpace() is nullptr, Image color space will be |
| treated as sRGB. |
| |
| If premulBehavior is SkTransferFunctionBehavior::kRespect: converts Image |
| pixels to a linear space before converting to match destination Color_Type |
| and Color_Space. |
| If premulBehavior is SkTransferFunctionBehavior::kIgnore: Image |
| pixels are treated as if they are linear, regardless of how they are encoded. |
| |
| #Param target incomplete ## |
| #Param premulBehavior incomplete ## |
| |
| #Return incomplete ## |
| |
| #Example |
| // incomplete |
| ## |
| |
| #SeeAlso incomplete |
| |
| #Method ## |
| |
| #Class SkImage ## |
| |
| #Topic Image ## |
