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os::Bitmap Class Reference

Container for bitmap-image data. More...

#include <bitmap.h>

List of all members.

Public Types
enum	{   ACCEPT_VIEWS = 0x0001,   SHARE_FRAMEBUFFER = 0x0002 }
Public Methods
	Bitmap (int nWidth, int nHeight, color_space eColorSpc, uint32 nFlags=SHARE_FRAMEBUFFER)
virtual	~Bitmap ()
bool	IsValid (void) const
color_space	GetColorSpace () const
Rect	GetBounds (void) const
int	GetBytesPerRow () const
virtual void	AddChild (View *pcView)
virtual bool	RemoveChild (View *pcView)
View *	FindView (const char *pzName) const
void	Sync (void)
void	Flush (void)
uint8 *	LockRaster (void)
void	UnlockRaster ()
Friends
class	View
class	Window
class	Sprite

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Detailed Description

Description:

The Bitmap class make it possible to render bitmap graphics into view's and to make view's render into an offscreen buffer to implement things like double-buffering.

The bitmap class have two different ways to communicate with the application server. If the SHARE_FRAMEBUFFER flag is set the bitmaps raster memory is created in a memory-area shared between the application and the appserver. This makes it possible for the appserver to blit graphics written directly to the bitmaps raster buffer by the application into views on the screen (or inside other bitmaps). If the ACCEPT_VIEWS flag is set the bitmap will accept views to be added much like a os::Window object. All rendering performed by the views will then go into the bitmap's offscreen buffer rather than the screen. The rendered image can then be read out by the application (requiers the SHARE_FRAMEBUFFER flag to be set aswell) or it can be blited into other views.

See also:

View, Window

Author:

Kurt Skauen (kurt@atheos.cx)

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Member Enumeration Documentation

anonymous enum

Enumeration values: ACCEPT_VIEWS   SHARE_FRAMEBUFFER

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Constructor & Destructor Documentation

Bitmap::Bitmap (  int nWidth, int nHeight, color_space eColorSpc, uint32 nFlags = SHARE_FRAMEBUFFER )

Bitmap::~Bitmap (  )  [virtual]

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Member Function Documentation

void Bitmap::AddChild (  View * pcView )  [virtual]

View * Bitmap::FindView (  const char * pzName )  const

void Bitmap::Flush (  void )

Rect Bitmap::GetBounds (  void )  const

int Bitmap::GetBytesPerRow (  )  const

color_space Bitmap::GetColorSpace (  )  const

bool os::Bitmap::IsValid (  void )  const

uint8* os::Bitmap::LockRaster (  void )  [inline]

bool Bitmap::RemoveChild (  View * pcView )  [virtual]

void Bitmap::Sync (  void )

void os::Bitmap::UnlockRaster (  )  [inline]

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Friends And Related Function Documentation

friend class Sprite [friend]

friend class View [friend]

friend class Window [friend]

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