Cgcontext reference pdf

CGImage Maps a mask into the specified rectangle and intersects it with the current clipping area of the graphics context. 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.

Rules for determining which regions are interior to a path, used by the fill Path using: Saving and Restoring Graphics State. Bool Adds an arc of a circle to the current path, specified with a radius and angles. If S is 1the point in the clipping area is unchanged. CGPoint Returns the location at which text is drawn. You obtain instances of concrete subclasses with the class methods currentinit attributes: An image or an image mask.

Managing the Color Rendering Intent. Bool Draws an image in the specified area. CGRect Draws the contents of a layer object into the specified rectangle. CGAffine Transform Returns the current text matrix. If the value of a source sample in the image mask is Sthen the corresponding point in the current clipping area is multiplied by an alpha value of 1—S. And now I want to fill referwnce figure with UIImage. Sets the clipping path to the intersection of the current clipping path with the area defined by the specified rectangle.

The rectangle to map the mask parameter to. Returns the color space of a bitmap context. CGFloat Changes the origin of the user coordinate system in a context.

A mutable graphics path: Instantiates and returns a new graphics context using the supplied NSBitmap Image Rep object as the context destination. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. CGAffine Transform Returns the current transformation matrix. CGRect Sets the clipping path to the intersection of the current clipping path with the area defined by the specified rectangle.

CGBitmap Info Obtains the bitmap information associated with a bitmap graphics context. CGData Consumer, media Box:. This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website.

We also use third-party cookies that help us analyze and understand how you use this website. If the value of the source sample in mask is Sthen the corresponding point in the current clipping area is multiplied by an alpha of S. Returns the alpha information associated with the context, which indicates how a bitmap context handles the alpha component. Creates a new graphics context from the specified Core Graphics context and the initial flipped state.

Paints a gradient fill that varies along the line defined by the provided starting and ending points. Unsafe Mutable Raw Pointer The low-level, platform-specific graphics context represented by the graphic port.

Bool A Boolean value indicating whether the receiver uses antialiasing. CGImage Maps a mask into the specified rectangle and intersects it with the current clipping area of the graphics context.

Working with the Current Transformation Matrix. Creates a PDF graphics context. These constants are dictionary keys used by init attributes: I have a roundrect figure, and a rect image. Flushing Graphics to the Context. CGInterpolation Quality Returns the current level of interpolation quality for a graphics context.

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?

Developers should not use this deprecated method. If the user clicks or taps in the specified region, the PDF viewer will jump to the named destination. Sets the fill color to the specified CGColor. Sets the fill color. Specifies the CGColorSpace to be used in the context. Sets the CGFont used to render text.

Sets the width of the stroked line. The line extends for half w to either side of the path. Used in conjunction with SetAllowsAntialiasing Boolean to enable or disable antialiasing. Used in conjunction with SetAllowsSubpixelPositioning Boolean to enable or disable glyph alignment with pixels. Sets the stroke color. This API has undefined behavior if you do not set the colorspace beforehand. SetStrokeColor float[].

Associates a region in the screen with a url. When the user clicks or taps in that region, he will be redirected to that url on their PDF viewer. This method has been deprecated in favor of N:CoreText. Strokes the ellipse defined by rect. Strokes the lines defined by the pairs in points. Strokes the specified rect. Strokes the rect. The line extends half of width to either side of the rect perimeter.

Marks a CGContext for update. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. In this article. Handle pointer to the unmanaged object representation. Inherited from CGContext. A hint for the level of quality used when interpolating images for example, when scaling.

The location, in user space coordinates, at which to draw text. AddArc nfloat, nfloat, nfloat, nfloat, nfloat, Boolean.

AddArcToPoint nfloat, nfloat, nfloat, nfloat, nfloat. Adds an arc to the current path. AddCurveToPoint nfloat, nfloat, nfloat, nfloat, nfloat, nfloat. Adds an ellipse that fits in the specified rect.

AddLines CGPoint[]. Adds the given lines to the current path. AddLineToPoint nfloat, nfloat.