1 API Overview & Doxygen Docs 2 =========================== 3 4 Skia is organized around the `SkCanvas` object. It is the host for the 5 "draw" calls: `drawRect`, `drawPath`, `drawText`, etc. Each of these 6 has two components: the primitive being drawn (`SkRect`, `SkPath`, etc.) 7 and color/style attributes (`SkPaint`). 8 9 <!--?prettify lang=cc?--> 10 11 canvas->drawRect(rect, paint); 12 13 The paint holds much of the state describing how the rectangle (in 14 this case) is drawn: what color it is, if it is filled or stroked, how 15 it should blend with what was previously drawn. 16 17 The canvas holds relatively little state. It points to the actual 18 pixels being drawn, and it maintains a stack of matrices and 19 clips. Thus in the above call, the canvas' current matrix may 20 transform the coordinates of the rectangle (translation, rotation, 21 skewing, perspective), and the canvas' current clip may restrict where 22 on the canvas the rectangle will be drawn, but all other stylistic 23 attributes of the drawing are controlled by the paint. 24 25 Using the SkCanvas API: 26 27 1. **[SkCanvas](/user/api/skcanvas)** - the drawing context. 28 2. **[SkPaint](/user/api/skpaint)** - color, stroke, font, effects 29 3. **[SkRect](/user/api/skrect)** - rectangles 30 4. **[SkRegion](/user/api/skregion)** - set operations with rectangles and paths 31 32 Appendix: 33 34 1. **[Creating SkCanvas Objects](/user/api/canvas)** 35 36 Autogenerated Doxygen Documentaion 37 ---------------------------------- 38 39 * [Skia Doxygen](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/index.html) 40 41 Here's a partial list of the more important Skia classes: 42 43 * [SkCanvas](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkCanvas.html) 44 * [SkImage](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkImage.html) 45 * [SkSurface](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkSurface.html) 46 * [SkPaint](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPaint.html) 47 * [SkXfermode](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkXfermode.html) 48 - [SkLerpXfermode](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkLerpXfermode.html) 49 - [SkPixelXorXfermode](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPixelXorXfermode.html) 50 * [SkShader](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkShader.html) 51 - [SkComposeShader](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkComposeShader.html) 52 - [SkPerlinNoiseShader](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPerlinNoiseShader.html) 53 - [SkGradientShader](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkGradientShader.html) 54 - [SkTransparentShader](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkTransparentShader.html) 55 * [SkColorFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkColorFilter.html) 56 - [SkColorCubeFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkColorCubeFilter.html) 57 - [SkColorMatrixFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkColorMatrixFilter.html) 58 - [SkLumaColorFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkLumaColorFilter.html) 59 - [SkModeColorFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkModeColorFilter.html) 60 * [SkPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPathEffect.html) 61 - [SkPath2DPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPath2DPathEffect.html) 62 - [SkLine2DPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkLine2DPathEffect.html) 63 - [SkPath1DPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPath1DPathEffect.html) 64 - [SkArcToPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkArcToPathEffect.html) 65 - [SkCornerPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkCornerPathEffect.html) 66 - [SkDashPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDashPathEffect.html) 67 - [SkDiscretePathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDiscretePathEffect.html) 68 - [SkComposePathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkComposePathEffect.html) 69 - [SkSumPathEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkSumPathEffect.html) 70 * [SkImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkImageFilter.html) 71 - [SkAlphaThresholdFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkAlphaThresholdFilter.html) 72 - [SkBlurImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkBlurImageFilter.html) 73 - [SkBitmapSource](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkBitmapSource.html) 74 - [SkColorFilterImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkColorFilterImageFilter.html) 75 - [SkComposeImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkComposeImageFilter.html) 76 - [SkDisplacementMapEffect](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDisplacementMapEffect.html) 77 - [SkDownSampleImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDownSampleImageFilter.html) 78 - [SkDropShadowImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDropShadowImageFilter.html) 79 - [SkLightingImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkLightingImageFilter.html) 80 - [SkMagnifierImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkMagnifierImageFilter.html) 81 - [SkMatrixConvolutionImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkMatrixConvolutionImageFilter.html) 82 - [SkMergeImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkMergeImageFilter.html) 83 - [SkDilateImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDilateImageFilter.html) 84 - [SkErodeImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkErodeImageFilter.html) 85 - [SkOffsetImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkOffsetImageFilter.html) 86 - [SkPictureImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkPictureImageFilter.html) 87 - [SkRectShaderImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkRectShaderImageFilter.html) 88 - [SkTileImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkTileImageFilter.html) 89 - [SkXfermodeImageFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkXfermodeImageFilter.html) 90 * [SkMaskFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkMaskFilter.html) 91 - [SkEmbossMaskFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkEmbossMaskFilter.html) 92 - [SkTableMaskFilter](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkTableMaskFilter.html) 93 * [SkDrawLooper](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkDrawLooper.html) 94 - [SkBlurDrawLooper](http://chromium-skia-gm.commondatastorage.googleapis.com/doxygen/doxygen/html/classSkBlurDrawLooper.html) 95
