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What are the features of Quartz 2D API?
The Quartz 2D API is easy to use and provides access to powerful features such as transparency layers, path-based drawing, offscreen rendering, advanced color management, anti-aliased rendering, and PDF document creation, display, and parsing. Who Should Read This Document?
What is the function of the slider in qslider?
Detailed Description The slider is the classic widget for controlling a bounded value. It lets the user move a slider handle along a horizontal or vertical groove and translates the handle’s position into an integer value within the legal range. QSlider has very few of its own functions; most of the functionality is in QAbstractSlider.
How to determine the orientation of a Qt slider?
The orientation parameter determines whether the slider is horizontal or vertical; the valid values are Qt::Vertical and Qt::Horizontal. Constructs a vertical slider with the given parent. Destroys this slider. Reimplements: QAbstractSlider::event (QEvent *e). Initialize option with the values from this QSlider.
What kind of drawing engine does quartz use?
Core Graphics, also known as Quartz 2D, is an advanced, two-dimensional drawing engine available for iOS, tvOS and macOS application development. Quartz 2D provides low-level, lightweight 2D rendering with unmatched output fidelity regardless of display or printing device.
How does Quartz 2D work in Mac OS X?
Moving Data Between Quartz 2D and Core Image in Mac OS Xdescribes how you can provide images to Core Image, which is a framework that supports image processing. Similarly, in iOS, Quartz 2D works with all available graphics and animation technologies, such as Core Animation, OpenGL ES, and the UIKit classes.
How to fill an area in Quartz 2D?
You can fill an area with an axial or radial shading by creating a shading object, providing a function that determines the color at each point in the shading, and then asking Quartz 2D to use the shading as a fill color. Figure 1-3 Opaque data types are the basis of drawing primitives in Quartz 2D
What do you need to know about Quartz drawing?
All objects in Quartz are drawn to, or contained by, a graphics context. You can think of a graphics context as a drawing destination, as shown in Figure 1-2. When you draw with Quartz, all device-specific characteristics are contained within the specific type of graphics context you use.