List of all members.
Public Member Functions
Static Public Member Functions
Constructor & Destructor Documentation
A constructor used when you have received a PP_Resource
as a return value that has already been reference counted.
- Parameters:
-
[in] | resource | A PP_Resource corresponding to image data. |
The copy constructor for ImageData
.
This constructor produces an ImageData
object that shares the underlying Image
resource with other
.
- Parameters:
-
[in] | other | A pointer to an image data. |
A constructor that allocates a new ImageData
in the browser with the provided parameters.
The resulting object will be is_null() if the allocation failed.
- Parameters:
-
[in] | instance | The instance with which this resource will be associated. |
[in] | format | A PP_ImageDataFormat containing desired image format. PP_ImageDataFormat is an enumeration of the different types of image data formats. Refer to ppb_image_data.h for further information. |
[in] | size | A pointer to a Size containing the image size. |
[in] | init_to_zero | A bool used to determine transparency at creation. Set the init_to_zero flag if you want the bitmap initialized to transparent during the creation process. If this flag is not set, the current contents of the bitmap will be undefined, and the module should be sure to set all the pixels. |
Member Function Documentation
A getter function for returning a raw pointer to the image pixels.
- Returns:
- A raw pointer to the image pixels.
A getter function for returning the current format for images.
- Returns:
PP_ImageDataFormat
containing the preferred format.
This function is used retrieve the address of the given pixel for 32-bit pixel formats.
- Parameters:
-
[in] | coord | A Point representing the x and y coordinates for a specific pixel. |
- Returns:
- The address for the pixel.
This function is used retrieve the address of the given pixel for 32-bit pixel formats.
- Parameters:
-
[in] | coord | A Point representing the x and y coordinates for a specific pixel. |
- Returns:
- The address for the pixel.
GetNativeImageDataFormat() determines the browser's preferred format for images.
Using this format guarantees no extra conversions will occur when painting.
- Returns:
PP_ImageDataFormat
containing the preferred format.
IsImageDataFormatSupported() returns true
if the supplied format is supported by the browser.
Note: PP_IMAGEDATAFORMAT_BGRA_PREMUL
and PP_IMAGEDATAFORMAT_RGBA_PREMUL
formats are always supported. Other image formats do not make this guarantee, and should be checked first with IsImageDataFormatSupported() before using.
- Parameters:
-
[in] | format | Image data format. |
- Returns:
true
if the format is supported by the browser.
This function decrements the reference count of this ImageData
and increments the reference count of the other
ImageData
.
This ImageData
shares the underlying image resource with other
.
- Parameters:
-
[in] | other | An other image data. |
- Returns:
- A new image data context.
A getter function for returning the image size.
- Returns:
- The image size in pixels.
A getter function for returning the row width in bytes.
- Returns:
- The row width in bytes.
The documentation for this class was generated from the following file: