CGCONTEXT REFERENCE PDF

clip(to:mask:) Maps a mask into the specified rectangle and intersects it with . The angle, in radians, by which to rotate the coordinate space of the specified. Declaration. func UIGraphicsGetCurrentContext() -> CGContext? func UIGraphicsPushContext(CGContext). Makes the specified graphics context the current.

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Have a look at this answer which explains how to do the first part How do I add a gradient to the text of a UILabel, but not the background?

Int, bits Per Component: I gccontext a roundrect figure, and a rect image. CGGradient Drawing Options Paints a gradient fill that varies along the line defined by the provided starting and ending points.

Starts a new page in a page-based graphics context. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

sketchyTech: Swift: Translating and Rotating a CGContext, A Visual Explanation (iOS/Xcode)

See my code, which I added to my question. An image or an image mask. These constants are recerence keys used by init attributes: CGRect Sets the clipping path to the intersection chcontext the current clipping path with the area defined by the specified rectangle. By sending restore Graphics State to a graphics context object you remove it from the stack, and the next graphics context on the stack becomes the current graphics context.

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Graphics contexts are maintained on a stack. Int Returns the bits per component of a bitmap context. Working with Core Foundation Types. Constructing a Current Graphics Path.

NSGraphicsContext – AppKit | Apple Developer Documentation

CGFloat Rotates the user coordinate system in a context. Drawing Gradients and Shadings. Bool Draws an image in the specified area. Assuming that you mean that you want to draw the image ‘inside’ your figure, the easiest way would be to create a cgpath of your figure, make sure the path is closed, and then CGContextClipToPath context, path ADDED I’ve just tested your code, and as Peter said, it should work.

Creating Bitmap Graphics Contexts. Int Displays an array of glyphs at a position you specify. Instance Method clip to: Testing the Drawing Destination. Rules for determining which regions are interior to a path, used by the fill Path using: Returns the alpha information associated with the context, which indicates how a bitmap context handles the alpha component.

Radek Wilczak 2 CGImage Maps a mask into the specified rectangle and intersects it with the current clipping area of the graphics context. Int Returns the width in pixels of a bitmap context. Managing the Color Rendering Intent. Sets the clipping path to the intersection of the current clipping path with the area defined by the specified rectangle. The NSGraphics Context class is an abstract superclass for destination-specific graphics contexts.

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I’ve just tested your code, and as Peter said, it should work. Creates a PDF graphics context.

Drawing Core Graphics Layers. Peter Pajchl 2, 16 Assuming cbcontext you mean that you want to draw the image ‘inside’ your figure, the easiest way would be to create a cgpath of your figure, make sure the path is closed, and then CGContextClipToPath context, path. Secound I want to image corners to be round like in my figure.

CGContext Reference

Post as a guest Name. An immutable graphics path: An object that represents a graphics context.

The source samples of the image mask determine which points of the clipping area are changed, acting as an “inverse alpha” value. Setting Fill, Stroke, and Shadow Colors. Quartz 2D Programming Guide. For example, if S is 1 then the point in the clipping area becomes transparent. Paints the area contained within the provided rectangle, using the fill color in the teference graphics state.

See Also 2D Drawing.

These properties and methods are valid only when used with a CGContext object created with the initializers listed in Creating Bitmap Graphics Contexts.