| Drivers {Microsoft.VisualBasic.Imaging.Driver} | .NET clr documentation |
The imaging graphics engine list for IGraphics
# namespace Microsoft.VisualBasic.Imaging.Driver
export class Drivers extends Enum {
# 与具体上下文相关的。当用户从命令行参数之中设置了环境变量之后，这个Default的含义与用户所设置的驱动程序类型一致，但是会被程序开发人员所设置的类型值所覆盖
Default: Drivers = 0;
# libgdi+ raster image model
GDI: Drivers = 1;
# mime type: image/svg+xml
SVG: Drivers = 2;
# application/postscript
PS: Drivers = 3;
# Windows meta file
WMF: Drivers = 4;
# application/pdf
PDF: Drivers = 5;
# The PostScript file format is a page description language (PDL) developed by Adobe Systems, Inc. It was first
# introduced in 1982 and has since become a standard for printing and imaging in the graphics and publishing
# industries. PostScript is a powerful and flexible format used primarily for printing high-quality text and
# graphics.
#
# Here are some key aspects of the PostScript file format:
#
# 1. Language-Based Format: PostScript is not just a file format but a full-fledged programming language.
# It includes a set of commands that describe how text, graphics, and images should be rendered on a page.
# 2. Device Independence: One of the main advantages of PostScript is its device independence. This means
# that a PostScript file can be created on one device and then printed or displayed on another device without
# needing to adjust the file for the specific characteristics of the output device.
# 3. Vector Graphics: PostScript is particularly well-suited for vector graphics, which are defined by
# mathematical equations rather than pixels. This allows for crisp, high-resolution output at any size.
# 4. Encapsulated PostScript (EPS): A variant of PostScript, EPS is a file format that can be used to exchange
# graphics between different applications. EPS files can contain both vector and bitmap graphics and are often
# used for logos, illustrations, and other graphics that need to be integrated into larger documents.
# 5. Font Handling: PostScript introduced sophisticated font handling, including the ability to scale and rotate
# text. It also supports both Type 1 and Type 3 fonts, which are outline fonts that can be scaled to any size
# without losing quality.
# 6. Complex Page Layouts: PostScript is capable of describing very complex page layouts, including text in
# multiple columns, overlapping graphics, and nested objects.
# 7. Interpreted Language: PostScript files are interpreted by a PostScript interpreter, which is typically
# built into a printer or a raster image processor (RIP). The interpreter reads the PostScript commands and
# renders the page accordingly.
# 8. Compatibility: While PostScript was once the dominant format for professional printing, its use has declined
# somewhat with the rise of PDF (Portable Document Format), also developed by Adobe. However, PostScript remains
# important in certain niches, and many printers and RIPs still support it.
# 9. File Extensions: PostScript files commonly have the extensions .ps (for PostScript) or .eps (for Encapsulated PostScript).
# 10. Programming Features: PostScript includes programming constructs such as variables, loops, and conditionals,
# which allow for a high degree of automation and customization in the creation of documents.
#
# Despite the rise of other formats like PDF, PostScript still has a place in the world of digital printing and publishing,
# particularly for applications where precise control over the output is required. It's also worth noting that many of the
# concepts and technologies introduced with PostScript laid the groundwork for later developments in digital graphics and
# document management.
PostScript: Drivers = 6;
}
Default: DriversGDI: DriversSVG: DriversPS: DriversWMF: DriversPDF: DriversPostScript: Drivers