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:: com :: sun :: star :: rendering ::
unpublished
interface XIeeeFloatReadOnlyBitmap
Base Interfaces XIeeeFloatReadOnlyBitmap
┗ XBitmap
XBitmap
(referenced interface's summary:)
This is a generic interface to a bitmap.
Usage Restrictions not published Description Specialized interface for bitmaps containing IEEE floats as their
color components. In contrast to XIeeeFloatBitmap ,
this interface only permits read-only access.
Use this interface for e.g. bitmaps that are calculated
on-the-fly, or that are pure functional, and thus cannot be
modified.
If you get passed an instance of
XHalfFloatReadOnlyBitmap that also supports the
XVolatileBitmap interface, things become a bit more
complicated. When reading data, one has to check for both
VolatileContentDestroyedException and mismatching
FloatingPointBitmapLayout return values. If either of them
occurs, the whole bitmap read operation should be repeated.
Methods' Summary
getData Query the raw data of this bitmap.
getPixel Get a single pixel of the bitmap, returning its color
value.
getMemoryLayout Query the memory layout for this bitmap.
Methods' Details
getData
Description Query the raw data of this bitmap.
Query the raw data of this bitmap, in the format as defined by
getMemoryLayout(). With the given rectangle, a subset of the
whole bitmap can be queried. When querying subsets of the
bitmap, the same scanline padding takes place as when the
whole bitmap is requested.
Note that the bitmap memory layout might change for volatile
bitmaps.
Parameter bitmapLayout The memory layout the returned data is in.
Parameter rect A rectangle, within the bounds of the bitmap, to retrieve the
contens from.
Throws VolatileContentDestroyedException
if the bitmap is volatile, and the content has been destroyed by the system.
Throws com::sun::star::lang::IndexOutOfBoundsException
if parts of the given rectangle are outside the permissible
bitmap area.
getPixel
Description Get a single pixel of the bitmap, returning its color
value.
Note that the bitmap memory layout might change for volatile
bitmaps.
Parameter bitmapLayout The memory layout the returned data is in.
Parameter pos A position, within the bounds of the bitmap, to retrieve the
color from.
Throws VolatileContentDestroyedException
if the bitmap is volatile, and the content has been destroyed by the system.
Throws com::sun::star::lang::IndexOutOfBoundsException
if the given position is outside the permissible bitmap area.
getMemoryLayout
Description Query the memory layout for this bitmap.
Please note that for volatile bitmaps, the memory layout might
change between subsequent calls.
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