SkCodecAnimation Namespace Reference

Enumerations
enum class	DisposalMethod { kKeep = 1 , kRestoreBGColor = 2 , kRestorePrevious = 3 }
enum class	Blend { kSrcOver , kSrc }

Enumeration Type Documentation

Blend

enum class SkCodecAnimation::Blend

strong

How to blend the current frame.

Enumerator
kSrcOver	Blend with the prior frame as if using SkBlendMode::kSrcOver.
kSrc	Blend with the prior frame as if using SkBlendMode::kSrc. This frame's pixels replace the destination pixels.

Definition at line 46 of file SkCodecAnimation.h.

                     {
        /**
         *  Blend with the prior frame as if using SkBlendMode::kSrcOver.
         */
        kSrcOver,
 
        /**
         *  Blend with the prior frame as if using SkBlendMode::kSrc.
         *
         *  This frame's pixels replace the destination pixels.
         */
        kSrc,
    };

DisposalMethod

enum class SkCodecAnimation::DisposalMethod

strong

This specifies how the next frame is based on this frame.

Names are based on the GIF 89a spec.

The numbers correspond to values in a GIF.

Enumerator
kKeep	The next frame should be drawn on top of this one. In a GIF, a value of 0 (not specified) is also treated as Keep.
kRestoreBGColor	Similar to Keep, except the area inside this frame's rectangle should be cleared to the BackGround color (transparent) before drawing the next frame.
kRestorePrevious	The next frame should be drawn on top of the previous frame - i.e. disregarding this one. In a GIF, a value of 4 is also treated as RestorePrevious.

Definition at line 19 of file SkCodecAnimation.h.

                              {
        /**
         *  The next frame should be drawn on top of this one.
         *
         *  In a GIF, a value of 0 (not specified) is also treated as Keep.
         */
        kKeep               = 1,
 
        /**
         *  Similar to Keep, except the area inside this frame's rectangle
         *  should be cleared to the BackGround color (transparent) before
         *  drawing the next frame.
         */
        kRestoreBGColor     = 2,
 
        /**
         *  The next frame should be drawn on top of the previous frame - i.e.
         *  disregarding this one.
         *
         *  In a GIF, a value of 4 is also treated as RestorePrevious.
         */
        kRestorePrevious    = 3,
    };