165 lines
3.7 KiB
C++
165 lines
3.7 KiB
C++
/*
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* Copyright 2001-2005, Haiku.
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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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* DarkWyrm <bpmagic@columbus.rr.com>
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*/
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#ifndef _SERVER_BITMAP_H_
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#define _SERVER_BITMAP_H_
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#include <GraphicsDefs.h>
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#include <Rect.h>
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#include <OS.h>
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class BitmapManager;
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/*!
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\class ServerBitmap ServerBitmap.h
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\brief Bitmap class used inside the server.
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This class is not directly allocated or freed. Instead, it is
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managed by the BitmapManager class. It is also the base class for
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all cursors. Every BBitmap has a shadow ServerBitmap object.
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*/
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class ServerBitmap {
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public:
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void Acquire();
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/*!
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\brief Returns the area in which the buffer resides
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\return
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- \c B_ERROR if the buffer is not allocated in an area
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- area_id for the buffer
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*/
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inline area_id Area() const
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{ return fArea; }
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// Returns the offset of the bitmap in its area
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inline int32 AreaOffset() const
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{ return fOffset; }
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//! Returns the bitmap's buffer
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inline uint8* Bits() const
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{ return fBuffer; }
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inline uint32 BitsLength() const
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{ return (uint32)(fBytesPerRow * fHeight); }
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inline BRect Bounds() const
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{ return BRect(0, 0, fWidth - 1, fHeight - 1); }
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//! Returns the number of bytes in each row, including padding
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inline int32 BytesPerRow() const
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{ return fBytesPerRow; }
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inline uint8 BitsPerPixel() const
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{ return fBitsPerPixel; }
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inline color_space ColorSpace() const
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{ return fSpace; }
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//! Returns the bitmap's width in pixels per row
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inline int32 Width() const
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{ return fWidth; }
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//! Returns the bitmap's row count
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inline int32 Height() const
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{ return fHeight; }
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inline bool IsValid() const
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{ return fInitialized; }
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//! Returns the identifier token for the bitmap
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inline int32 Token() const
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{ return fToken; }
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//! Does a shallow copy of the bitmap passed to it
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inline void ShallowCopy(const ServerBitmap *from);
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protected:
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friend class BitmapManager;
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friend class PicturePlayer;
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ServerBitmap(BRect rect,
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color_space space,
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int32 flags,
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int32 bytesperline = -1,
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screen_id screen = B_MAIN_SCREEN_ID);
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ServerBitmap(const ServerBitmap* bmp);
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virtual ~ServerBitmap();
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//! used by the BitmapManager
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inline void _SetArea(area_id ID)
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{ fArea = ID; }
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//! used by the BitmapManager
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inline void _SetBuffer(void *ptr)
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{ fBuffer = (uint8*)ptr; }
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bool _Release();
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void _AllocateBuffer();
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void _FreeBuffer();
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void _HandleSpace(color_space space,
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int32 bytesperline = -1);
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bool fInitialized;
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area_id fArea;
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uint8* fBuffer;
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int32 fReferenceCount;
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int32 fWidth;
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int32 fHeight;
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int32 fBytesPerRow;
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color_space fSpace;
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int32 fFlags;
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int fBitsPerPixel;
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int32 fToken;
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int32 fOffset;
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};
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class UtilityBitmap : public ServerBitmap {
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public:
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UtilityBitmap(BRect rect,
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color_space space,
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int32 flags,
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int32 bytesperline = -1,
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screen_id screen = B_MAIN_SCREEN_ID);
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UtilityBitmap(const ServerBitmap* bmp);
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UtilityBitmap(const uint8* alreadyPaddedData,
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uint32 width,
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uint32 height,
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color_space format);
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virtual ~UtilityBitmap();
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};
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// ShallowCopy
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void
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ServerBitmap::ShallowCopy(const ServerBitmap* from)
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{
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if (!from)
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return;
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fInitialized = from->fInitialized;
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fArea = from->fArea;
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fBuffer = from->fBuffer;
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fWidth = from->fWidth;
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fHeight = from->fHeight;
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fBytesPerRow = from->fBytesPerRow;
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fSpace = from->fSpace;
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fFlags = from->fFlags;
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fBitsPerPixel = from->fBitsPerPixel;
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fToken = from->fToken;
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fOffset = from->fOffset;
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}
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#endif // _SERVER_BITMAP_H_
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