set_area

Sets the image data to be display by this, using rect to indicate the position and size of the image data to be set.

If the this does not have any image data set when this function is called, a new texture will be created with the size of the width and height of the rectangle, i.e. calling this function on a newly created Image will be the equivalent of calling set_data.

If the image data was successfully loaded, the this will be invalidated.

In case of error, the error value will be set, and this function will return false.

The image data is copied in texture memory.

Parameters:

this	a Image
data	the image data, as an array of bytes
pixel_format	the Cogl pixel format of the image data
rect	a rectangle indicating the area that should be set
row_stride	the length of each row inside data

Returns:

true if the image data was successfully loaded, and false otherwise.