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FMX.RS.SVGImgList Namespace

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Represents namespace FMX.RS.SVGImgList.

Name

Description

Defines a TImageList composed entirely of SVGs to enable compact, graphical support of different screen resolutions and densities.

FireMonkey is a multi-platform framework (Windows, iOS, Mac OS X, and Android), and therefore FireMonkey applications work on devices having different screen densities and resolutions. Embarcadero recommends using FireMonkey multi-resolution bitmaps so that your images and icons in FireMonkey applications will appear correctly in different densities and resolutions (Windows, iOS, Mac OS X, and Android). However, a multi-resolution bitmap is a collection of bitmap items providing the same image but having different scales . This means that multiple copies of the same image are embedded in your app - most of these copies are unused as they are intended for a different scale than the one your app is running on - potentially wasting large amounts of disk and memory space.

The TRSSVGImageList component solves this problem by creating a TImageList composed entirely of SVGs. For each SVG, you specify the sizes that the SVG should take at each screen scale. The TRSSVGImageList component generates, at run-time, bitmaps only for the current screen scale, potentially saving lots of space.

Tip
It is generally not recommended to use SVGs with text on non-Windows platforms unless the specified Width and Height are large. The FMX library provides poor text quality when writing to offscreen bitmaps, which is what the TRSSVGImageList does, on these platforms.

TSVGCollection

Maintains a collection of SVGs for a FMX.RS.SVGImgList.TRSSVGImageList. Each FMX.RS.SVGImgList.TSVGCollectionItem object in the collection specifies one SVG and the desired Sizes that it should generate bitmaps at based on screen scales.

The SVGs' XML is embedded into the form or data module.

TSVGCollectionItem

Defines one SVG for a TRSSVGImageList. The TSVGCollectionItem class maintains one SVG and the desired FMX.RS.SVGImgList.TSVGCollectionItem.Sizes that it should generate bitmaps at based on screen scales.

The SVG XML is embedded into the form or data module in the Lines property.

TSVGSize

Defines one SVG size for a screen scale. The TSVGSize item specifies the Width and Height of the bitmap to generate from an SVG for a screen scale. The FMX.RS.SVGImgList.TRSSVGImageList component uses TSVGSize items to generate bitmaps at run-time at the desired size based on the current screen scale.

TSVGSizes

Maintains a collection of SVG sizes for associated screen scales. Each FMX.RS.SVGImgList.TSVGSize item specifies the Width and Height of the bitmap to generate from an SVG for a given screen scale. The FMX.RS.SVGImgList.TRSSVGImageList component uses TSVGSize items to generate bitmaps at run-time at the desired size based on the current screen scale.

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