[PATCH 0/6] Add weston randr protocol

[Quanxian Wang]

These patches will provide weston randr protocol,
its implementation and randr application.

The idea is from xrandr provided by xserver. *Dynamic* mode
setting is the main objective of this protocol. Remember,
it is one shot operation. For example, if setting the mode,
just call one request wl_randr_set_mode without any other operation.

With this protocol, weston-wrandr application is developped to help 
user implement randr protocol in command line just like xrandr command 
in xserver.

For wayland customer, this application could *DYNAMICALLY*
do mode setting in command line.

For wayland application developer, weston randr protocol provide
a external interface to *DYNAMICALLY* do mode setting instead of
static configuring weston at the very beginning.

Weston protocol wrandr will provide interface to 
1) set output mode
2) set output transform
3) move output to relative position
4) provide disconnected output information

Currently randr has more functions to be defined and implemented.
Some other functions are planned. But at first we need support.
If this protocol is accepted, we could have the chance moving on.

The advantage is
randr architecture have been defined at this commit. New function will
be very easy to be added in the protocol.

One note:
Currently wl_output doesn't provide wl_output_send_name function,
I have to implemented it in randr protocol. Actually it will be very
easily implemented in wl_output interface. If this commit series is
accepted, I will provide the patch to add wl_output_send_name to make
issue simply resolved instead of in randr protocol.
'

Here are some test cases.

1. weston-randr -q # query all output mode info and disconnected output

HDMI3
1)1440x900 at 60 (current)
2)1920x1200 at 60
3)1680x1050 at 60
...

VGA1
1)1280x1024 at 60 (current)
2)1152x864 at 60
3)1024x768 at 60
...

HDMI1 disconnected
HDMI2 disconnected
DP1 disconnected
DP2 disconnected
...

2. weston-randr --output HDMI3 # query HDMI3 output mode info

HDMI3
1)1440x900 at 60 (current)
2)1920x1200 at 60
3)1680x1050 at 60

3. weston-randr --output HDMI3 -m 2 # which will set mode as 1920x1200

4. weston-randr --output HDMI3 -R 1 # rotate HDMI3 output 90 degree

5. weston-randr --output HDMI3 -leftof VGA1 # put HDMI3 output leftof VGA1

6. weston-randr --output HDMI3 -rightof VGA1 # put HDMI3 output rightof VGA1

Quanxian Wang (6):
  Add weston randr protocol
  Add weston_randr definition and randr_backend intreface
  Add the detailed implementation of randr protocol
  Initialize the randr interface in drm backend
  Add weston-randr application
  Change the size of Panel and Background after output's is changed

 clients/Makefile.am     |   9 +
 clients/desktop-shell.c |  60 +++++
 clients/window.c        |   7 +
 clients/window.h        |   2 +
 clients/wrandr.c        | 642 ++++++++++++++++++++++++++++++++++++++++++++++++
 protocol/Makefile.am    |   1 +
 protocol/randr.xml      | 151 ++++++++++++
 src/Makefile.am         |   4 +
 src/compositor-drm.c    |  67 +++++
 src/compositor.c        | 466 +++++++++++++++++++++++++++++++----
 src/compositor.h        |  14 ++
 11 files changed, 1376 insertions(+), 47 deletions(-)
 create mode 100644 clients/wrandr.c
 create mode 100644 protocol/randr.xml

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1.8.1.2