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output-management-v1: update protocol, add set_custom_mode

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master
emersion 6 years ago committed by Drew DeVault
parent fc0ba3ea22
commit ab3446091b
3 changed files with 108 additions and 35 deletions
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105
protocol/wlr-output-management-unstable-v1.xml
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@ -26,7 +26,7 @@
</copyright>
<description summary="protocol to configure output devices">
This protocol exposes interfaces to get and change output device
This protocol exposes interfaces to obtain and modify output device
configuration.
Warning! The protocol described in this file is experimental and
@ -46,15 +46,23 @@
Output devices that display pixels (e.g. a physical monitor or a virtual
output in a window) are represented as heads. Heads cannot be created nor
destroyed, but they can be enabled or disabled and their properties can be
changed. Each head may have one or more available modes.
destroyed by the client, but they can be enabled or disabled and their
properties can be changed. Each head may have one or more available modes.
Heads are advertised when the output manager is bound, and whenever they
appear.
Whenever a head appears (e.g. a monitor is plugged in), it will be
advertised via the head event. Immediately after the output manager is
bound, all current heads are advertised.
Whenever the number of heads or modes changes, the done event will be
sent. It carries a serial which can be used in a create_configuration
request to change heads properties.
Whenever a head's properties change, the relevant wlr_output_head events
will be sent. Not all head properties will be sent: only properties that
have changed need to.
Whenever a head disappears (e.g. a monitor is unplugged), a
wlr_output_head.finished event will be sent.
After one or more heads appear, change or disappear, the done event will
be sent. It carries a serial which can be used in a create_configuration
request to update heads properties.
The information obtained from this protocol should only be used for output
configuration purposes. This protocol is not designed to be a generic
@ -64,7 +72,9 @@
<event name="head">
<description summary="introduce a new head">
This event introduces a new head.
This event introduces a new head. This happens whenever a new head
appears (e.g. a monitor is plugged in) or after the output manager is
bound.
</description>
<arg name="head" type="new_id" interface="zwlr_output_head_v1"/>
</event>
@ -75,7 +85,8 @@
the output manager object and after any subsequent changes. This applies
to child head and mode objects as well. In other words, this event is
sent whenever a head or mode is created or destroyed and whenever one of
their properties has been changed.
their properties has been changed. Not all state is re-sent each time
the current configuration changes: only the actual changes are sent.
This allows changes to the output configuration to be seen as atomic,
even if they happen via multiple events.
@ -116,28 +127,21 @@
<interface name="zwlr_output_head_v1" version="1">
<description summary="output device">
A head is an output device. The difference with wl_output is that heads
are advertized even if they are turned off. A head object only advertises
properties and cannot be used directly to change them. In order to update
some properties, one needs to create a wlr_output_configuration object.
A head is an output device. The difference between a wl_output object and
a head is that heads are advertised even if they are turned off. A head
object only advertises properties and cannot be used directly to change
them.
A head has some read-only properties: mode, name, description and
A head has some read-only properties: modes, name, description and
physical_size. These cannot be changed by clients.
enabled and current_mode are physical properties. Updating them might take
some time, depending on hardware limitations.
Other properties can be updated via a wlr_output_configuration object.
position, transform and scale are logical properties. They describe how
the output is mapped in the global compositor space.
Properties sent via this interface are applied atomically via the
wlr_output_manager.done event. No guarantees are made regarding the order
in which properties are sent.
</description>
<event name="mode">
<description summary="advertise a supported mode">
If the head supports modes, this event is sent once per supported mode.
</description>
<arg name="mode" type="new_id" interface="zwlr_output_mode_v1"/>
</event>
<event name="name">
<description summary="head name">
This event describes the head name.
@ -168,7 +172,9 @@
The description is a UTF-8 string with no convention defined for its
contents. Examples might include 'Foocorp 11" Display' or 'Virtual X11
output via :1'.
output via :1'. However, do not assume that the name is a reflection of
the make, model, serial of the underlying DRM connector or the display
name of the underlying X11 connection, etc.
If the compositor implements xdg-output and this head is enabled,
the xdg_output.description must report the same description.
@ -190,6 +196,14 @@
<arg name="height" type="int" summary="height in millimeters of the output"/>
</event>
<event name="mode">
<description summary="introduce a mode">
This event introduces a mode for this head. It is sent once per
supported mode.
</description>
<arg name="mode" type="new_id" interface="zwlr_output_mode_v1"/>
</event>
<event name="enabled">
<description summary="head is enabled or disabled">
This event describes whether the head is enabled. A disabled head is not
@ -204,7 +218,7 @@
<event name="current_mode">
<description summary="current mode">
This event describes the mode currently in use for this head. It is only
sent if the output is enabled and supports modes.
sent if the output is enabled.
</description>
<arg name="mode" type="object" interface="zwlr_output_mode_v1"/>
</event>
@ -251,6 +265,10 @@
Some heads don't support output modes, in which case modes won't be
advertised.
Properties sent via this interface are applied atomically via the
wlr_output_manager.done event. No guarantees are made regarding the order
in which properties are sent.
</description>
<event name="size">
@ -266,7 +284,8 @@
<event name="refresh">
<description summary="mode refresh rate">
This event describes the mode's fixed vertical refresh rate, if any.
This event describes the mode's fixed vertical refresh rate. It is only
sent if the mode has a fixed refresh rate.
</description>
<arg name="refresh" type="int" summary="vertical refresh rate in mHz"/>
</event>
@ -322,7 +341,7 @@
<request name="disable_head">
<description summary="disable a head">
Disable a head. The head's properties are irrelevant in this case.
Disable a head.
</description>
<arg name="head" type="object" interface="zwlr_output_head_v1"
summary="the head to be disabled"/>
@ -363,6 +382,9 @@
tested them.
Upon receiving this event, the client should destroy this object.
If the current configuration has changed, events to describe the changes
will be sent followed by a wlr_output_manager.done event.
</description>
</event>
@ -404,12 +426,16 @@
<interface name="zwlr_output_configuration_head_v1" version="1">
<description summary="head configuration">
This object is used by the client to update a single head's configuration.
It is a protocol error to set the same property twice.
</description>
<enum name="error">
<entry name="invalid_mode" value="1" summary="mode doesn't belong to head"/>
<entry name="invalid_transform" value="2" summary="transform value outside enum"/>
<entry name="invalid_scale" value="3" summary="scale negative or zero"/>
<entry name="already_set" value="1" summary="property has already been set"/>
<entry name="invalid_mode" value="2" summary="mode doesn't belong to head"/>
<entry name="invalid_custom_mode" value="3" summary="mode is invalid"/>
<entry name="invalid_transform" value="4" summary="transform value outside enum"/>
<entry name="invalid_scale" value="5" summary="scale negative or zero"/>
</enum>
<request name="set_mode">
@ -419,6 +445,19 @@
<arg name="mode" type="object" interface="zwlr_output_mode_v1"/>
</request>
<request name="set_custom_mode">
<description summary="set a custom mode">
This request assigns a custom mode to the head. The size is given in
physical hardware units of the output device. If set to zero, the
refresh rate is unspecified.
It is a protocol error to set both a mode and a custom mode.
</description>
<arg name="width" type="int" summary="width of the mode in hardware units"/>
<arg name="height" type="int" summary="height of the mode in hardware units"/>
<arg name="refresh" type="int" summary="vertical refresh rate in mHz or zero"/>
</request>
<request name="set_position">
<description summary="set the position">
This request sets the head's position in the global compositor space.

5
rootston/output.c
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@ -451,6 +451,11 @@ void handle_output_manager_apply(struct wl_listener *listener, void *data) {
}
if (config_head->state.mode != NULL) {
ok &= wlr_output_set_mode(wlr_output, config_head->state.mode);
} else {
ok &= wlr_output_set_custom_mode(wlr_output,
config_head->state.custom_mode.width,
config_head->state.custom_mode.height,
config_head->state.custom_mode.refresh);
}
wlr_output_layout_add(desktop->layout, wlr_output,
config_head->state.x, config_head->state.y);

33
types/wlr_output_management_v1.c
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@ -149,10 +149,11 @@ static void config_head_handle_set_mode(struct wl_client *client,
}
struct wlr_output_mode *mode = mode_from_resource(mode_resource);
struct wlr_output *output = config_head->state.output;
bool found = false;
bool found = (mode == NULL && wl_list_empty(&output->modes));
struct wlr_output_mode *m;
wl_list_for_each(m, &config_head->state.output->modes, link) {
wl_list_for_each(m, &output->modes, link) {
if (mode == m) {
found = true;
break;
@ -167,6 +168,33 @@ static void config_head_handle_set_mode(struct wl_client *client,
}
config_head->state.mode = mode;
if (mode != NULL) {
config_head->state.custom_mode.width = 0;
config_head->state.custom_mode.height = 0;
config_head->state.custom_mode.refresh = 0;
}
}
static void config_head_handle_set_custom_mode(struct wl_client *client,
struct wl_resource *config_head_resource, int32_t width, int32_t height,
int32_t refresh) {
struct wlr_output_configuration_head_v1 *config_head =
config_head_from_resource(config_head_resource);
if (config_head == NULL) {
return;
}
if (width <= 0 || height <= 0 || refresh < 0) {
wl_resource_post_error(config_head_resource,
ZWLR_OUTPUT_CONFIGURATION_HEAD_V1_ERROR_INVALID_CUSTOM_MODE,
"invalid custom mode");
return;
}
config_head->state.mode = NULL;
config_head->state.custom_mode.width = width;
config_head->state.custom_mode.height = height;
config_head->state.custom_mode.refresh = refresh;
}
static void config_head_handle_set_position(struct wl_client *client,
@ -221,6 +249,7 @@ static void config_head_handle_set_scale(struct wl_client *client,
static const struct zwlr_output_configuration_head_v1_interface config_head_impl = {
.set_mode = config_head_handle_set_mode,
.set_custom_mode = config_head_handle_set_custom_mode,
.set_position = config_head_handle_set_position,
.set_transform = config_head_handle_set_transform,
.set_scale = config_head_handle_set_scale,

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