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CD2DBitmap Class

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The latest version of this topic can be found at CD2DBitmap Class.

A wrapper for ID2D1Bitmap.

Syntax

class CD2DBitmap : public CD2DResource;

Members

Public Constructors

Name Description
CD2DBitmap::CD2DBitmap Overloaded. Constructs a CD2DBitmap object from HBITMAP.
CD2DBitmap::~CD2DBitmap The destructor. Called when a D2D bitmap object is being destroyed.

Protected Constructors

Name Description
CD2DBitmap::CD2DBitmap Overloaded. Constructs a CD2DBitmap object.

Public Methods

Name Description
CD2DBitmap::Attach Attaches existing resource interface to the object
CD2DBitmap::CopyFromBitmap Copies the specified region from the specified bitmap into the current bitmap
CD2DBitmap::CopyFromMemory Copies the specified region from memory into the current bitmap
CD2DBitmap::CopyFromRenderTarget Copies the specified region from the specified render target into the current bitmap
CD2DBitmap::Create Creates a CD2DBitmap. (Overrides CD2DResource::Create.)
CD2DBitmap::Destroy Destroys a CD2DBitmap object. (Overrides CD2DResource::Destroy.)
CD2DBitmap::Detach Detaches resource interface from the object
CD2DBitmap::Get Returns ID2D1Bitmap interface
CD2DBitmap::GetDPI Return the dots per inch (DPI) of the bitmap
CD2DBitmap::GetPixelFormat Retrieves the pixel format and alpha mode of the bitmap
CD2DBitmap::GetPixelSize Returns the size, in device-dependent units (pixels), of the bitmap
CD2DBitmap::GetSize Returns the size, in device-independent pixels (DIPs), of the bitmap
CD2DBitmap::IsValid Checks resource validity (Overrides CD2DResource::IsValid.)

Protected Methods

Name Description
CD2DBitmap::CommonInit Initializes the object

Public Operators

Name Description
CD2DBitmap::operator ID2D1Bitmap* Returns ID2D1Bitmap interface

Protected Data Members

Name Description
CD2DBitmap::m_bAutoDestroyHBMP TRUE if m_hBmpSrc should be destroyed; otherwise FALSE.
CD2DBitmap::m_hBmpSrc Source bitmap handle.
CD2DBitmap::m_lpszType Resource type.
CD2DBitmap::m_pBitmap Stores a pointer to an ID2D1Bitmap object.
CD2DBitmap::m_sizeDest Bitmap destination size.
CD2DBitmap::m_strPath Botmap file path.
CD2DBitmap::m_uiResID Bitmap resource ID.

Inheritance Hierarchy

CObject

CD2DResource

CD2DBitmap

Requirements

Header: afxrendertarget.h

CD2DBitmap::~CD2DBitmap

The destructor. Called when a D2D bitmap object is being destroyed.

virtual ~CD2DBitmap();

CD2DBitmap::Attach

Attaches existing resource interface to the object

void Attach(ID2D1Bitmap* pResource);

Parameters

pResource
Existing resource interface. Cannot be NULL

CD2DBitmap::CD2DBitmap

Constructs a CD2DBitmap object from resource.

CD2DBitmap(
    CRenderTarget* pParentTarget,  
    UINT uiResID,  
    LPCTSTR lpszType = NULL,  
    CD2DSizeU sizeDest = CD2DSizeU(0, 0), 
    BOOL bAutoDestroy = TRUE);

 
CD2DBitmap(
    CRenderTarget* pParentTarget,  
    LPCTSTR lpszPath,  
    CD2DSizeU sizeDest = CD2DSizeU(0, 0), 
    BOOL bAutoDestroy = TRUE);

 
CD2DBitmap(
    CRenderTarget* pParentTarget,  
    HBITMAP hbmpSrc,  
    CD2DSizeU sizeDest = CD2DSizeU(0, 0), 
    BOOL bAutoDestroy = TRUE);

 
CD2DBitmap(
    CRenderTarget* pParentTarget,  
    BOOL bAutoDestroy = TRUE);

Parameters

pParentTarget
A pointer to the render target.

uiResID
The resource ID number of the resource.

lpszType
Pointer to a null-terminated string that contains the resource type.

sizeDest
Destination size of the bitmap.

bAutoDestroy
Indicates that the object will be destroyed by owner (pParentTarget).

lpszPath
Pointer to a null-terminated string that contains the name of file.

hbmpSrc
Handle to the bitmap.

CD2DBitmap::CommonInit

Initializes the object

void CommonInit();

CD2DBitmap::CopyFromBitmap

Copies the specified region from the specified bitmap into the current bitmap

HRESULT CopyFromBitmap(
    const CD2DBitmap* pBitmap,  
    const CD2DPointU* destPoint = NULL,  
    const CD2DRectU* srcRect = NULL);

Parameters

pBitmap
The bitmap to copy from

destPoint
In the current bitmap, the upper-left corner of the area to which the region specified by srcRect is copied

srcRect
The area of bitmap to copy

Return Value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

CD2DBitmap::CopyFromMemory

Copies the specified region from memory into the current bitmap

HRESULT CopyFromMemory(
    const void* srcData,  
    UINT32 pitch,  
    const CD2DRectU* destRect = NULL);

Parameters

srcData
The data to copy

pitch
The stride, or pitch, of the source bitmap stored in srcData. The stride is the byte count of a scanline (one row of pixels in memory). The stride can be computed from the following formula: pixel width * bytes per pixel + memory padding

destRect
In the current bitmap, the upper-left corner of the area to which the region specified by srcRect is copied

Return Value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

CD2DBitmap::CopyFromRenderTarget

Copies the specified region from the specified render target into the current bitmap

HRESULT CopyFromRenderTarget(
    const CRenderTarget* pRenderTarget,  
    const CD2DPointU* destPoint = NULL,  
    const CD2DRectU* srcRect = NULL);

Parameters

pRenderTarget
The render target that contains the region to copy

destPoint
In the current bitmap, the upper-left corner of the area to which the region specified by srcRect is copied

srcRect
The area of renderTarget to copy

Return Value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

CD2DBitmap::Create

Creates a CD2DBitmap.

virtual HRESULT Create(CRenderTarget* pRenderTarget);

Parameters

pRenderTarget
A pointer to the render target.

Return Value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

CD2DBitmap::Destroy

Destroys a CD2DBitmap object.

virtual void Destroy();

CD2DBitmap::Detach

Detaches resource interface from the object

ID2D1Bitmap* Detach();

Return Value

Pointer to detached resource interface.

CD2DBitmap::Get

Returns ID2D1Bitmap interface

ID2D1Bitmap* Get();

Return Value

Pointer to an ID2D1Bitmap interface or NULL if object is not initialized yet.

CD2DBitmap::GetDPI

Return the dots per inch (DPI) of the bitmap

CD2DSizeF GetDPI() const;

Return Value

The horizontal and vertical DPI of the bitmap.

CD2DBitmap::GetPixelFormat

Retrieves the pixel format and alpha mode of the bitmap

D2D1_PIXEL_FORMAT GetPixelFormat() const;

Return Value

The pixel format and alpha mode of the bitmap.

CD2DBitmap::GetPixelSize

Returns the size, in device-dependent units (pixels), of the bitmap

CD2DSizeU GetPixelSize() const;

Return Value

The size, in pixels, of the bitmap..

CD2DBitmap::GetSize

Returns the size, in device-independent pixels (DIPs), of the bitmap

CD2DSizeF GetSize() const;

Return Value

The size, in DIPs, of the bitmap.

CD2DBitmap::IsValid

Checks resource validity

virtual BOOL IsValid() const;

Return Value

TRUE if resource is valid; otherwise FALSE.

CD2DBitmap::m_bAutoDestroyHBMP

TRUE if m_hBmpSrc should be destroyed; otherwise FALSE.

BOOL m_bAutoDestroyHBMP;

CD2DBitmap::m_hBmpSrc

Source bitmap handle.

HBITMAP m_hBmpSrc;

CD2DBitmap::m_lpszType

Resource type.

LPCTSTR m_lpszType;

CD2DBitmap::m_pBitmap

Stores a pointer to an ID2D1Bitmap object.

ID2D1Bitmap* m_pBitmap;

CD2DBitmap::m_sizeDest

Bitmap destination size.

CD2DSizeU m_sizeDest;

CD2DBitmap::m_strPath

Botmap file path.

CString m_strPath;

CD2DBitmap::m_uiResID

Bitmap resource ID.

UINT m_uiResID;

CD2DBitmap::operator ID2D1Bitmap*

Returns ID2D1Bitmap interface

operator ID2D1Bitmap*();

Return Value

Pointer to an ID2D1Bitmap interface or NULL if object is not initialized yet.

See Also

Classes