screen_blit()

Synopsis:

#include <screen/screen.h>

int screen_blit(screen_context_t ctx,
                screen_buffer_t dst,
                screen_buffer_t src,
                const int *attribs)

Since:

BlackBerry 10.0.0

Arguments:

ctx: A connection to Screen

dst: The buffer which data will be copied to.

src: The buffer which the pixels will be copied from.

attribs: A list that contains the attributes that define the blit. This list must consist of a series of token-value pairs terminated with a SCREEN_BLIT_END token. The tokens used in this list must be of type Screen blit types.

Library:

libscreen (For the qcc command, use the -l screen option to link against this library)

Description:

Function Type: Delayed Execution

This function requests pixels from one buffer be copied to another. The operation is guaranteed not to be submitted until a flush is called, or until the application posts changes to one of the context's windows.

The attribs argument is allowed to be NULL or empty (i.e. contains a single element that is set to SCREEN_BLIT_END). If attribs is empty, then the following defaults will be applied:

the source rectangle's vertical and horizontal positions are 0
the destination rectangle's vertical and horizontal positions are 0
the source rectangle includes the entire source buffer
the destination buffer includes the entire destination buffer
the transparency is SCREEN_TRANSPARENCY_NONE
the global alpha value is 255 (or opaque)
the scale quality is SCREEN_QUALITY_NORMAL.

To change any of this default behavior, set attribs with pairings of the following valid tokens and their desired values:

Returns:

0 if the blit operation was queued, or -1 if an error occurred (errno is set).