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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Int Returns the bits per component of a bitmap context. My Code from -drawRect: Returns the current graphics context of the current thread. Paints a gradient fill that varies along the line defined by the provided starting and ending points. 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?

Sets the clipping path to the intersection of the current clipping path with the region defined by an array of rectangles. Attribute Key These constants are dictionary keys used by init attributes: Instance Method clip to: If S is 1the point in the clipping area is unchanged.

Paints the areas contained within the provided rectangles, using the fill color in the current graphics state. Flushing Graphics to the Context. CGInterpolation Quality Referencr the current level of interpolation quality for a graphics context.

Constants that specify how Cocoa should handle colors that are not located within the destination color refference of a graphics context. CGPoint Returns the location at which text is drawn. Secound I want to image corners regerence be round like in my figure. Managing the Color Rendering Intent.

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NSGraphicsContext – AppKit | Apple Developer Documentation

I have a roundrect figure, and a rect image. 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. Interpolations used by the image Interpolation property. Drawing the Current Graphics Path.

Saving and Restoring the Current Graphics State

Gordon Dove 2, 1 13 CGGradient Drawing Options Paints a gradient fill that varies along the line defined by the provided starting and ending points. Quartz 2D Programming Guide. Returns a pointer to the image data associated with a bitmap context. Getting the Core Image Context. CGPoint Draws the contents of a layer object at the specified point. Managing a Page-Based Graphics Context. Begins a new page in a PDF graphics context. Creates a new graphics context from the specified Core Graphics context and the initial flipped state.

Testing the Drawing Destination. Sign up or log in Sign up using Google. CGBitmap Info Obtains the bitmap information associated with a bitmap graphics context.

NSWindow Creates and returns a new graphics context for drawing into a window. Post as a guest Name. UInt32 Creates a bitmap graphics context. A CIContext object that you can use to render into the receiver. A Quartz 2D drawing environment.

CGText Encoding Sets the font and font size in a graphics context. Bool A Boolean value indicating whether the cgcontexg destination is the screen.

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CGAffine Transform Returns the current transformation matrix. Compositing operators, described in terms of having source and destination images, each having an opaque and transparent region.

Topics Creating a Graphics Context. CGRect Sets the clipping path to the intersection of the current clipping path with the area defined by the specified rectangle. CGImage Alpha Info Returns the alpha information associated with the context, which indicates how a bitmap context handles the alpha component.

Each graphics context contains its own graphics environment and state.

I think a little more detail is required. By using our site, you acknowledge that you have read and referejce our Cookie PolicyPrivacy Policyand our Terms of Service.

rotate(by:) – CGContext | Apple Developer Documentation

Bool Draws an image in the specified area. At any time there is the notion of the current context. The rectangle to map the mask parameter to.

You push a graphics context onto the stack by sending it a save Graphics State message, and pop it off the stack by sending it a restore Graphics State message. Getting Information About a Context. Sets the clipping path to the intersection of the current clipping path with the area defined by the specified rectangle.

Int Displays an array of glyphs at the current text position.