X11-DoubleBuffer

Add double buffer (back buffer) support to x11window_t.

Summary

X11-DoubleBuffer	Add double buffer (back buffer) support to x11window_t.
Copyright	This program is free software.
Files
C-kern/api/platform/X11/x11dblbuffer.h	Header file X11-DoubleBuffer.
C-kern/platform/X11/x11dblbuffer.c	Implementation file X11-DoubleBuffer impl.
Types
struct x11dblbuffer_t	Export x11dblbuffer_t into global namespace.
Functions
test
unittest_platform_X11_x11dblbuffer	Test x11dblbuffer_t functionality.
x11dblbuffer_t	A drawable which describes the double buffer (back buffer) of a x11window_t.
display	Reference to x11display_t.
sys_drawable	X window ID.
sys_colormap	X window ID.
lifetime
x11dblbuffer_FREE	Static initializer.
init_x11dblbuffer	Tries to allocate a double buffer associated with window.
free_x11dblbuffer	Frees and deallocates the double buffer associated with a window.

Copyright

This program is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Author

Files

C-kern/api/platform/X11/x11dblbuffer.h

Header file X11-DoubleBuffer.

C-kern/platform/X11/x11dblbuffer.c

Implementation file X11-DoubleBuffer impl.

Types

struct x11dblbuffer_t

typedef struct x11dblbuffer_t x11dblbuffer_t

Export x11dblbuffer_t into global namespace.

Functions

Summary

test
unittest_platform_X11_x11dblbuffer	Test x11dblbuffer_t functionality.

test

unittest_platform_X11_x11dblbuffer

int unittest_platform_X11_x11dblbuffer( void )

Test x11dblbuffer_t functionality.

x11dblbuffer_t

struct x11dblbuffer_t

A drawable which describes the double buffer (back buffer) of a x11window_t.

Summary

display	Reference to x11display_t.
sys_drawable	X window ID.
sys_colormap	X window ID.
lifetime
x11dblbuffer_FREE	Static initializer.
init_x11dblbuffer	Tries to allocate a double buffer associated with window.
free_x11dblbuffer	Frees and deallocates the double buffer associated with a window.

display

struct x11display_t* display

Reference to x11display_t. Every call to X library needs this parameter.

sys_drawable

uint32_t sys_drawable

X window ID. The ID describes a drawable either of type window, backbuffer or pixmap.

sys_colormap

uint32_t sys_colormap

X window ID. The ID describes a colormap which is associated with the drawable. A colormap is used to map the pixel depth of drawable to screen’s pixel depth.

lifetime

x11dblbuffer_FREE

#define x11dblbuffer_FREE { 0, 0, 0 }

Static initializer.

init_x11dblbuffer

int init_x11dblbuffer( /*out*/x11dblbuffer_t * dblbuf,
struct x11window_t * x11win )

Tries to allocate a double buffer associated with window.

free_x11dblbuffer

int free_x11dblbuffer( x11dblbuffer_t * dblbuf )

Frees and deallocates the double buffer associated with a window. You need to call this function before you free the associated window.