Declarationproperty StoreType: TIEStoreType;
Specifies how image used by the TImageEnMView component are stored in memory (as full size images or thumbnails at their display size).
|Value ||Description |
|ietNormal ||The full bitmap is kept in memory |
|ietThumb ||A sub-sampled copy of the bitmap is kept in memory (of the size specified by ThumbWidth and ThumbHeight) |
|ietFastThumb ||Only the cached image of the display thumbnail is held in memory. If the thumbnail is cleared from the cache it will need to be reloaded |
Note: When using ietThumb or ietFastThumb, image meta-data
will not be loaded unless ieixWantParams
Default: ietNormal (TImageEnMView), ietFastThumb (TImageEnFolderMView), ietThumb (TImageEnLayerMView)
ietThumb vs ietFastThumb
When using ietFastThumb, creation of the thumbnail is delayed until it is shown on screen. Prior to this a full size image of each frame may be held in memory. For this reason ietFastThumb should not be used unless thumbnail frames are being loaded on demand (or there are not a large number of off-screen frames).
ietFastThumb can improve the quality of thumbnails, particularly when using ImageInfoText
. It cannot be used if you have disabled image caching
If you use ietFastThumb then you should significantly increase the ImageCacheSize
to something larger, such as 200.