162 lines
4.7 KiB
Plaintext
162 lines
4.7 KiB
Plaintext
/*
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* Copyright 2011 Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Adrien Destugues, pulkomandy@pulkomandy.ath.cx
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*
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* Corresponds to:
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* headers/os/interface/IconUtils.h rev 42600
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* src/kits/interface/IconUtils.cpp rev 42600
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*/
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/*!
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\file IconUtils.h
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\ingroup interface
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\ingroup libbe
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\brief Vector icon handling utility class
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*/
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/*!
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\class BIconUtils
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\ingroup interface
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\ingroup libbe
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\brief The BIconUtils class provide utility methods for managing and
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drawing vector icons.
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Haiku icons are stored in the HVIF (Haiku Vector Icon Format). This format
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was designed specifically for this purpose, and allows the icon data to be
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small enough to fit in file's inodes. This way, the icon can be displayed
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like any other file attribute, without extra disk access.
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This class provide only static methods to allow access to the icon data and
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rendering to BBitmaps for later use in an application. It also supports
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older icons in bitmap format. These may still be useful at very small
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sizes. Note you can't create an instance of BIconUtils, just call the
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static methods.
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::GetIcon(BNode* node,
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const char* vectorIconAttrName, const char* smallIconAttrName,
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const char* largeIconAttrName, icon_size size, BBitmap* result)
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\brief Utility function to import an icon from a node.
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Utility function to import an icon from the node that
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has either of the provided attribute names. Which icon type
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is preferred (vector, small or large B_CMAP8 icon) depends
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on the colorspace of the provided bitmap.
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\note If the colorspace is B_CMAP8, B_CMAP8 icons are preferred. In that
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case, the bitmap size must also match the provided icon_size "size"!
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::GetVectorIcon(BNode* node,
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const char* attrName, BBitmap* result)
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\brief Utility function to import a vector icon in "flat icon" format.
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Utility function to import a vector icon in "flat icon"
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format from a BNode attribute into the preallocated BBitmap \a result.
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The colorspace of result needs to be B_RGBA32 or at
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least B_RGB32 (though that makes less sense). The icon
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will be scaled from its "native" size of 64x64 to the
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size of the bitmap.
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\note The scale is derived from the bitmap width, the bitmap should have
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square dimension, or the icon will be cut off at the bottom (or have
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room left).
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::GetVectorIcon(const uint8* buffer,
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size_t size, BBitmap* result)
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\brief Utility function to import a vector icon in "flat icon" format.
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Utility function to import a vector icon in "flat icon"
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format from the given \a buffer into the preallocated BBitmap \a result.
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The colorspace of result needs to be B_RGBA32 or at
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least B_RGB32 (though that makes less sense). The icon
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will be scaled from its "native" size of 64x64 to the
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size of the bitmap.
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\note The scale is derived from the bitmap width, the bitmap should have
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square dimension, or the icon will be cut off at the bottom (or have
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room left).
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::GetCMAP8Icon(BNode* node,
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const char* smallIconAttrName, const char* largeIconAttrName,
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icon_size size, BBitmap* icon)
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\brief Utility function to import an "old" BeOS icon in B_CMAP8 colorspace.
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Utility function to import an "old" BeOS icon in B_CMAP8 colorspace from
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either the small icon attribute or the large icon attribute as given in
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\a smallIconAttrName and \a largeIconAttrName. Which icon is loaded depends
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on the given \a size.
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::ConvertFromCMAP8(BBitmap* source,
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BBitmap* result)
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\brief Converts an old-style icon to another colorspace.
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Utility function to convert from old icon colorspace into colorspace of
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BBitmap \a result
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\note result should be in B_RGBA32 colorspace, and source in B_CMAP8.
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::ConvertToCMAP8(BBitmap* source,
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BBitmap* result)
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\brief Converts a true-color icon to CMAP8 colorspace.
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Utility function to convert data from source into \a result colorspace.
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Call this to convert a picture to a format suitable for storage as an
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old-style icon.
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\note result should be in B_CMAP8 colorspace, and source in B_RGBA32.
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::ConvertFromCMAP8(const uint8* data,
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uint32 width, uint32 height, uint32 bytesPerRow, BBitmap* result);
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\brief Convert raw data in B_CMAP8 colorspace to a B_RGBA32 BBitmap.
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\since Haiku R1
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*/
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/*!
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\fn static status_t BIconUtils::ConvertToCMAP8(const uint8* data,
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uint32 width, uint32 height, uint32 bytesPerRow, BBitmap* result);
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\brief Convert B_RGBA32 raw data into a B_CMAP8 BBitmap.
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\since Haiku R1
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*/
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