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Add screen number overlays

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This commit is contained in:
Jason Francis 2019-08-12 18:38:46 -04:00
parent 8cea18fd0d
commit 3d69ae73d3
9 changed files with 646 additions and 33 deletions
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4
protocol/meson.build
View File

@ -18,8 +18,10 @@ wayland_scanner_client = generator(
client_protocols = [
[wl_protocol_dir, 'unstable/xdg-output/xdg-output-unstable-v1.xml'],
[wl_protocol_dir, 'stable/xdg-shell/xdg-shell.xml'],
['wlr-output-management-unstable-v1.xml'],
['wlr-screencopy-unstable-v1.xml']
['wlr-screencopy-unstable-v1.xml'],
['wlr-layer-shell-unstable-v1.xml']
]
client_protos_src = []

285
protocol/wlr-layer-shell-unstable-v1.xml Normal file
View File

@ -0,0 +1,285 @@
<?xml version="1.0" encoding="UTF-8"?>
<protocol name="wlr_layer_shell_unstable_v1">
<copyright>
Copyright © 2017 Drew DeVault
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that copyright notice and this permission
notice appear in supporting documentation, and that the name of
the copyright holders not be used in advertising or publicity
pertaining to distribution of the software without specific,
written prior permission. The copyright holders make no
representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied
warranty.
THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
</copyright>
<interface name="zwlr_layer_shell_v1" version="1">
<description summary="create surfaces that are layers of the desktop">
Clients can use this interface to assign the surface_layer role to
wl_surfaces. Such surfaces are assigned to a "layer" of the output and
rendered with a defined z-depth respective to each other. They may also be
anchored to the edges and corners of a screen and specify input handling
semantics. This interface should be suitable for the implementation of
many desktop shell components, and a broad number of other applications
that interact with the desktop.
</description>
<request name="get_layer_surface">
<description summary="create a layer_surface from a surface">
Create a layer surface for an existing surface. This assigns the role of
layer_surface, or raises a protocol error if another role is already
assigned.
Creating a layer surface from a wl_surface which has a buffer attached
or committed is a client error, and any attempts by a client to attach
or manipulate a buffer prior to the first layer_surface.configure call
must also be treated as errors.
You may pass NULL for output to allow the compositor to decide which
output to use. Generally this will be the one that the user most
recently interacted with.
Clients can specify a namespace that defines the purpose of the layer
surface.
</description>
<arg name="id" type="new_id" interface="zwlr_layer_surface_v1"/>
<arg name="surface" type="object" interface="wl_surface"/>
<arg name="output" type="object" interface="wl_output" allow-null="true"/>
<arg name="layer" type="uint" enum="layer" summary="layer to add this surface to"/>
<arg name="namespace" type="string" summary="namespace for the layer surface"/>
</request>
<enum name="error">
<entry name="role" value="0" summary="wl_surface has another role"/>
<entry name="invalid_layer" value="1" summary="layer value is invalid"/>
<entry name="already_constructed" value="2" summary="wl_surface has a buffer attached or committed"/>
</enum>
<enum name="layer">
<description summary="available layers for surfaces">
These values indicate which layers a surface can be rendered in. They
are ordered by z depth, bottom-most first. Traditional shell surfaces
will typically be rendered between the bottom and top layers.
Fullscreen shell surfaces are typically rendered at the top layer.
Multiple surfaces can share a single layer, and ordering within a
single layer is undefined.
</description>
<entry name="background" value="0"/>
<entry name="bottom" value="1"/>
<entry name="top" value="2"/>
<entry name="overlay" value="3"/>
</enum>
</interface>
<interface name="zwlr_layer_surface_v1" version="1">
<description summary="layer metadata interface">
An interface that may be implemented by a wl_surface, for surfaces that
are designed to be rendered as a layer of a stacked desktop-like
environment.
Layer surface state (size, anchor, exclusive zone, margin, interactivity)
is double-buffered, and will be applied at the time wl_surface.commit of
the corresponding wl_surface is called.
</description>
<request name="set_size">
<description summary="sets the size of the surface">
Sets the size of the surface in surface-local coordinates. The
compositor will display the surface centered with respect to its
anchors.
If you pass 0 for either value, the compositor will assign it and
inform you of the assignment in the configure event. You must set your
anchor to opposite edges in the dimensions you omit; not doing so is a
protocol error. Both values are 0 by default.
Size is double-buffered, see wl_surface.commit.
</description>
<arg name="width" type="uint"/>
<arg name="height" type="uint"/>
</request>
<request name="set_anchor">
<description summary="configures the anchor point of the surface">
Requests that the compositor anchor the surface to the specified edges
and corners. If two orthoginal edges are specified (e.g. 'top' and
'left'), then the anchor point will be the intersection of the edges
(e.g. the top left corner of the output); otherwise the anchor point
will be centered on that edge, or in the center if none is specified.
Anchor is double-buffered, see wl_surface.commit.
</description>
<arg name="anchor" type="uint" enum="anchor"/>
</request>
<request name="set_exclusive_zone">
<description summary="configures the exclusive geometry of this surface">
Requests that the compositor avoids occluding an area of the surface
with other surfaces. The compositor's use of this information is
implementation-dependent - do not assume that this region will not
actually be occluded.
A positive value is only meaningful if the surface is anchored to an
edge, rather than a corner. The zone is the number of surface-local
coordinates from the edge that are considered exclusive.
Surfaces that do not wish to have an exclusive zone may instead specify
how they should interact with surfaces that do. If set to zero, the
surface indicates that it would like to be moved to avoid occluding
surfaces with a positive excluzive zone. If set to -1, the surface
indicates that it would not like to be moved to accommodate for other
surfaces, and the compositor should extend it all the way to the edges
it is anchored to.
For example, a panel might set its exclusive zone to 10, so that
maximized shell surfaces are not shown on top of it. A notification
might set its exclusive zone to 0, so that it is moved to avoid
occluding the panel, but shell surfaces are shown underneath it. A
wallpaper or lock screen might set their exclusive zone to -1, so that
they stretch below or over the panel.
The default value is 0.
Exclusive zone is double-buffered, see wl_surface.commit.
</description>
<arg name="zone" type="int"/>
</request>
<request name="set_margin">
<description summary="sets a margin from the anchor point">
Requests that the surface be placed some distance away from the anchor
point on the output, in surface-local coordinates. Setting this value
for edges you are not anchored to has no effect.
The exclusive zone includes the margin.
Margin is double-buffered, see wl_surface.commit.
</description>
<arg name="top" type="int"/>
<arg name="right" type="int"/>
<arg name="bottom" type="int"/>
<arg name="left" type="int"/>
</request>
<request name="set_keyboard_interactivity">
<description summary="requests keyboard events">
Set to 1 to request that the seat send keyboard events to this layer
surface. For layers below the shell surface layer, the seat will use
normal focus semantics. For layers above the shell surface layers, the
seat will always give exclusive keyboard focus to the top-most layer
which has keyboard interactivity set to true.
Layer surfaces receive pointer, touch, and tablet events normally. If
you do not want to receive them, set the input region on your surface
to an empty region.
Events is double-buffered, see wl_surface.commit.
</description>
<arg name="keyboard_interactivity" type="uint"/>
</request>
<request name="get_popup">
<description summary="assign this layer_surface as an xdg_popup parent">
This assigns an xdg_popup's parent to this layer_surface. This popup
should have been created via xdg_surface::get_popup with the parent set
to NULL, and this request must be invoked before committing the popup's
initial state.
See the documentation of xdg_popup for more details about what an
xdg_popup is and how it is used.
</description>
<arg name="popup" type="object" interface="xdg_popup"/>
</request>
<request name="ack_configure">
<description summary="ack a configure event">
When a configure event is received, if a client commits the
surface in response to the configure event, then the client
must make an ack_configure request sometime before the commit
request, passing along the serial of the configure event.
If the client receives multiple configure events before it
can respond to one, it only has to ack the last configure event.
A client is not required to commit immediately after sending
an ack_configure request - it may even ack_configure several times
before its next surface commit.
A client may send multiple ack_configure requests before committing, but
only the last request sent before a commit indicates which configure
event the client really is responding to.
</description>
<arg name="serial" type="uint" summary="the serial from the configure event"/>
</request>
<request name="destroy" type="destructor">
<description summary="destroy the layer_surface">
This request destroys the layer surface.
</description>
</request>
<event name="configure">
<description summary="suggest a surface change">
The configure event asks the client to resize its surface.
Clients should arrange their surface for the new states, and then send
an ack_configure request with the serial sent in this configure event at
some point before committing the new surface.
The client is free to dismiss all but the last configure event it
received.
The width and height arguments specify the size of the window in
surface-local coordinates.
The size is a hint, in the sense that the client is free to ignore it if
it doesn't resize, pick a smaller size (to satisfy aspect ratio or
resize in steps of NxM pixels). If the client picks a smaller size and
is anchored to two opposite anchors (e.g. 'top' and 'bottom'), the
surface will be centered on this axis.
If the width or height arguments are zero, it means the client should
decide its own window dimension.
</description>
<arg name="serial" type="uint"/>
<arg name="width" type="uint"/>
<arg name="height" type="uint"/>
</event>
<event name="closed">
<description summary="surface should be closed">
The closed event is sent by the compositor when the surface will no
longer be shown. The output may have been destroyed or the user may
have asked for it to be removed. Further changes to the surface will be
ignored. The client should destroy the resource after receiving this
event, and create a new surface if they so choose.
</description>
</event>
<enum name="error">
<entry name="invalid_surface_state" value="0" summary="provided surface state is invalid"/>
<entry name="invalid_size" value="1" summary="size is invalid"/>
<entry name="invalid_anchor" value="2" summary="anchor bitfield is invalid"/>
</enum>
<enum name="anchor" bitfield="true">
<entry name="top" value="1" summary="the top edge of the anchor rectangle"/>
<entry name="bottom" value="2" summary="the bottom edge of the anchor rectangle"/>
<entry name="left" value="4" summary="the left edge of the anchor rectangle"/>
<entry name="right" value="8" summary="the right edge of the anchor rectangle"/>
</enum>
</interface>
</protocol>

11
resources/style.css
View File

@ -8,12 +8,9 @@ spinner.visible {
opacity: 1;
}
.head {
border: 1px solid @borders;
border-radius: 1px;
background-color: @theme_bg_color;
transition: background-color 200ms ease-in-out;
}
.head:hover {
.output-overlay {
background-color: @theme_selected_bg_color;
color: @theme_selected_fg_color;
border-radius: 8px;
opacity: 0.9;
}

14
resources/wdisplays.ui
View File

@ -50,6 +50,20 @@
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkModelButton">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="action_name">app.show-overlay</property>
<property name="text" translatable="yes">Show Numbers on Screens</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>

30
src/main.c
View File

@ -708,7 +708,8 @@ static void cleanup(GtkWidget *window, gpointer data) {
}
static void monitor_added(GdkDisplay *display, GdkMonitor *monitor, gpointer data) {
wd_add_output(data, gdk_wayland_monitor_get_wl_output(monitor));
struct wl_display *wl_display = gdk_wayland_display_get_wl_display(display);
wd_add_output(data, gdk_wayland_monitor_get_wl_output(monitor), wl_display);
}
static void monitor_removed(GdkDisplay *display, GdkMonitor *monitor, gpointer data) {
@ -1145,6 +1146,21 @@ static void capture_selected(GSimpleAction *action, GVariant *param, gpointer da
update_tick_callback(state);
}
static void overlay_selected(GSimpleAction *action, GVariant *param, gpointer data) {
struct wd_state *state = data;
state->show_overlay = !state->show_overlay;
g_simple_action_set_state(action, g_variant_new_boolean(state->show_overlay));
struct wd_output *output;
wl_list_for_each(output, &state->outputs, link) {
if (state->show_overlay) {
wd_create_overlay(output);
} else {
wd_destroy_overlay(output);
}
}
}
static void activate(GtkApplication* app, gpointer user_data) {
GdkDisplay *gdk_display = gdk_display_get_default();
if (!GDK_IS_WAYLAND_DISPLAY(gdk_display)) {
@ -1229,6 +1245,11 @@ static void activate(GtkApplication* app, gpointer user_data) {
g_signal_connect(capture_action, "activate", G_CALLBACK(capture_selected), state);
g_action_map_add_action(G_ACTION_MAP(main_actions), G_ACTION(capture_action));
GSimpleAction *overlay_action = g_simple_action_new_stateful("show-overlay", NULL,
g_variant_new_boolean(state->show_overlay));
g_signal_connect(overlay_action, "activate", G_CALLBACK(overlay_selected), state);
g_action_map_add_action(G_ACTION_MAP(main_actions), G_ACTION(overlay_action));
/* first child of GtkInfoBar is always GtkRevealer */
g_autoptr(GList) info_children = gtk_container_get_children(GTK_CONTAINER(state->info_bar));
g_signal_connect(info_children->data, "notify::child-revealed", G_CALLBACK(info_bar_animation_done), state);
@ -1247,11 +1268,16 @@ static void activate(GtkApplication* app, gpointer user_data) {
g_simple_action_set_state(capture_action, g_variant_new_boolean(state->capture));
g_simple_action_set_enabled(capture_action, FALSE);
}
if (state->layer_shell == NULL) {
state->show_overlay = false;
g_simple_action_set_state(overlay_action, g_variant_new_boolean(state->show_overlay));
g_simple_action_set_enabled(overlay_action, FALSE);
}
int n_monitors = gdk_display_get_n_monitors(gdk_display);
for (int i = 0; i < n_monitors; i++) {
GdkMonitor *monitor = gdk_display_get_monitor(gdk_display, i);
wd_add_output(state, gdk_wayland_monitor_get_wl_output(monitor));
wd_add_output(state, gdk_wayland_monitor_get_wl_output(monitor), display);
}
g_signal_connect(gdk_display, "monitor-added", G_CALLBACK(monitor_added), state);

1
src/meson.build
View File

@ -14,6 +14,7 @@ executable(
'outputs.c',
'render.c',
'glviewport.c',
'overlay.c',
resources,
],
dependencies : [

100
src/outputs.c
View File

@ -1,4 +1,3 @@
/*
* Copyright (C) 2019 cyclopsian
* Copyright (C) 2017-2019 emersion
@ -34,6 +33,7 @@
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdarg.h>
#include <sys/mman.h>
#include <fcntl.h>
@ -44,6 +44,7 @@
#include "wlr-output-management-unstable-v1-client-protocol.h"
#include "xdg-output-unstable-v1-client-protocol.h"
#include "wlr-screencopy-unstable-v1-client-protocol.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
static void noop() {
// This space is intentionally left blank
@ -171,32 +172,54 @@ static void wd_frame_destroy(struct wd_frame *frame) {
free(frame);
}
static int create_shm_file(size_t size, const char *fmt, ...) {
char *shm_name = NULL;
int fd = -1;
va_list vl;
va_start(vl, fmt);
int result = vasprintf(&shm_name, fmt, vl);
va_end(vl);
if (result == -1) {
fprintf(stderr, "asprintf: %s\n", strerror(errno));
shm_name = NULL;
return -1;
}
fd = shm_open(shm_name, O_CREAT | O_RDWR, 0);
if (fd == -1) {
fprintf(stderr, "shm_open: %s\n", strerror(errno));
free(shm_name);
return -1;
}
shm_unlink(shm_name);
free(shm_name);
if (ftruncate(fd, size) == -1) {
fprintf(stderr, "ftruncate: %s\n", strerror(errno));
close(fd);
return -1;
}
return fd;
}
static void capture_buffer(void *data,
struct zwlr_screencopy_frame_v1 *copy_frame,
uint32_t format, uint32_t width, uint32_t height, uint32_t stride) {
struct wd_frame *frame = data;
char *shm_name = NULL;
if (format != WL_SHM_FORMAT_ARGB8888 && format != WL_SHM_FORMAT_XRGB8888 &&
format != WL_SHM_FORMAT_ABGR8888 && format != WL_SHM_FORMAT_XBGR8888) {
goto err;
}
if (asprintf(&shm_name, "/wd-%s", frame->output->name) == -1) {
fprintf(stderr, "asprintf: %s\n", strerror(errno));
shm_name = NULL;
goto err;
}
frame->capture_fd = shm_open(shm_name, O_CREAT | O_RDWR, 0);
if (frame->capture_fd == -1) {
fprintf(stderr, "shm_open: %s\n", strerror(errno));
goto err;
}
shm_unlink(shm_name);
free(shm_name);
size_t size = stride * height;
ftruncate(frame->capture_fd, size);
frame->capture_fd = create_shm_file(size, "/wd-%s", frame->output->name);
if (frame->capture_fd == -1) {
goto err;
}
frame->pool = wl_shm_create_pool(frame->output->state->shm,
frame->capture_fd, size);
frame->buffer = wl_shm_pool_create_buffer(frame->pool, 0,
@ -210,9 +233,6 @@ static void capture_buffer(void *data,
return;
err:
if (shm_name != NULL) {
free(shm_name);
}
wd_frame_destroy(frame);
}
@ -302,6 +322,9 @@ static void wd_output_destroy(struct wd_output *output) {
wl_list_for_each_safe(frame, frame_tmp, &output->frames, link) {
wd_frame_destroy(frame);
}
if (output->state->layer_shell != NULL) {
wd_destroy_overlay(output);
}
zxdg_output_v1_destroy(output->xdg_output);
free(output->name);
free(output);
@ -452,8 +475,20 @@ static void head_handle_scale(void *data,
static void head_handle_finished(void *data,
struct zwlr_output_head_v1 *wlr_head) {
struct wd_head *head = data;
struct wd_state *state = head->state;
wl_list_remove(&head->link);
wd_head_destroy(head);
uint32_t counter = 0;
wl_list_for_each(head, &state->heads, link) {
if (head->id != counter) {
head->id = counter;
if (head->output != NULL) {
wd_redraw_overlay(head->output);
}
}
counter++;
}
}
static const struct zwlr_output_head_v1_listener head_listener = {
@ -478,6 +513,7 @@ static void output_manager_handle_head(void *data,
head->state = state;
head->wlr_head = wlr_head;
head->scale = 1.0;
head->id = wl_list_length(&state->heads);
wl_list_init(&head->modes);
wl_list_insert(state->heads.prev, &head->link);
@ -513,6 +549,9 @@ static void registry_handle_global(void *data, struct wl_registry *registry,
} else if(strcmp(interface, zwlr_screencopy_manager_v1_interface.name) == 0) {
state->copy_manager = wl_registry_bind(registry, name,
&zwlr_screencopy_manager_v1_interface, version);
} else if(strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
state->layer_shell = wl_registry_bind(registry, name,
&zwlr_layer_shell_v1_interface, version);
} else if(strcmp(interface, wl_shm_interface.name) == 0) {
state->shm = wl_registry_bind(registry, name, &wl_shm_interface, version);
}
@ -532,11 +571,12 @@ void wd_add_output_management_listener(struct wd_state *state, struct
wl_display_roundtrip(display);
}
static struct wd_head *wd_find_head(struct wd_state *state,
struct wd_head *wd_find_head(struct wd_state *state,
struct wd_output *output) {
struct wd_head *head;
wl_list_for_each(head, &state->heads, link) {
if (output->name != NULL && strcmp(output->name, head->name) == 0) {
head->output = output;
return head;
}
}
@ -576,7 +616,14 @@ static void output_logical_size(void *data, struct zxdg_output_v1 *zxdg_output_v
static void output_name(void *data, struct zxdg_output_v1 *zxdg_output_v1,
const char *name) {
struct wd_output *output = data;
if (output->name != NULL) {
free(output->name);
}
output->name = strdup(name);
struct wd_head *head = wd_find_head(output->state, output);
if (head != NULL) {
wd_ui_reset_head(head, WD_FIELD_NAME);
}
}
static const struct zxdg_output_v1_listener output_listener = {
@ -587,7 +634,8 @@ static const struct zxdg_output_v1_listener output_listener = {
.description = noop
};
void wd_add_output(struct wd_state *state, struct wl_output *wl_output) {
void wd_add_output(struct wd_state *state, struct wl_output *wl_output,
struct wl_display *display) {
struct wd_output *output = calloc(1, sizeof(*output));
output->state = state;
output->wl_output = wl_output;
@ -596,6 +644,10 @@ void wd_add_output(struct wd_state *state, struct wl_output *wl_output) {
wl_list_init(&output->frames);
zxdg_output_v1_add_listener(output->xdg_output, &output_listener, output);
wl_list_insert(output->state->outputs.prev, &output->link);
if (state->layer_shell != NULL && state->show_overlay) {
wl_display_roundtrip(display);
wd_create_overlay(output);
}
}
void wd_remove_output(struct wd_state *state, struct wl_output *wl_output,
@ -634,6 +686,7 @@ struct wd_state *wd_state_create(void) {
struct wd_state *state = calloc(1, sizeof(*state));
state->zoom = 1.;
state->capture = true;
state->show_overlay = true;
wl_list_init(&state->heads);
wl_list_init(&state->outputs);
wl_list_init(&state->render.heads);
@ -658,7 +711,12 @@ void wd_state_destroy(struct wd_state *state) {
wl_list_for_each_safe(output, output_tmp, &state->outputs, link) {
wd_output_destroy(output);
}
if (state->layer_shell != NULL) {
zwlr_layer_shell_v1_destroy(state->layer_shell);
}
if (state->copy_manager != NULL) {
zwlr_screencopy_manager_v1_destroy(state->copy_manager);
}
zwlr_output_manager_v1_destroy(state->output_manager);
zxdg_output_manager_v1_destroy(state->xdg_output_manager);
wl_shm_destroy(state->shm);

200
src/overlay.c Normal file
View File

@ -0,0 +1,200 @@
/*
* Copyright (C) 2019 cyclopsian
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#define _GNU_SOURCE
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <gtk/gtk.h>
#include <gdk/gdkwayland.h>
#include "wdisplays.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
#define TEXT_SIZE 128
#define SCREEN_MARGIN_PERCENT 0.02
static void layer_surface_configure(void *data,
struct zwlr_layer_surface_v1 *surface,
uint32_t serial, uint32_t width, uint32_t height) {
struct wd_output *output = data;
gtk_widget_set_size_request(output->overlay_window, width, height);
zwlr_layer_surface_v1_ack_configure(surface, serial);
}
static void layer_surface_closed(void *data,
struct zwlr_layer_surface_v1 *surface) {
}
static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layer_surface_configure,
.closed = layer_surface_closed,
};
static inline int min(int a, int b) {
return a < b ? a : b;
}
static char *make_overlay_string(struct wd_head *head) {
return g_strdup_printf("%d", head->id + 1);
}
static PangoLayout *create_text_layout(struct wd_head *head,
PangoContext *pango) {
g_autofree gchar *str = make_overlay_string(head);
PangoLayout *layout = pango_layout_new(pango);
PangoAttrList *attrs = pango_attr_list_new();
pango_attr_list_insert(attrs, pango_attr_size_new(TEXT_SIZE * PANGO_SCALE));
pango_layout_set_attributes(layout, attrs);
pango_attr_list_unref(attrs);
pango_layout_set_text(layout, str, -1);
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_NONE);
return layout;
}
static void resize(struct wd_output *output) {
struct wd_head *head = wd_find_head(output->state, output);
uint32_t screen_width = head->custom_mode.width;
uint32_t screen_height = head->custom_mode.height;
if (head->mode != NULL) {
screen_width = head->mode->width;
screen_height = head->mode->height;
}
uint32_t margin = min(screen_width, screen_height) * SCREEN_MARGIN_PERCENT;
GdkWindow *window = gtk_widget_get_window(output->overlay_window);
PangoContext *pango = gtk_widget_get_pango_context(output->overlay_window);
PangoLayout *layout = create_text_layout(head, pango);
int width;
int height;
pango_layout_get_pixel_size(layout, &width, &height);
g_object_unref(layout);
width = min(width, screen_width - margin * 2);
height = min(height, screen_height - margin * 2);
zwlr_layer_surface_v1_set_margin(output->overlay_layer_surface,
margin, margin, margin, margin);
zwlr_layer_surface_v1_set_size(output->overlay_layer_surface,
width, height);
struct wl_surface *surface = gdk_wayland_window_get_wl_surface(window);
wl_surface_commit(surface);
GdkDisplay *display = gdk_window_get_display(window);
wl_display_roundtrip(gdk_wayland_display_get_wl_display(display));
}
void wd_redraw_overlay(struct wd_output *output) {
if (output->overlay_window != NULL) {
resize(output);
gtk_widget_queue_draw(output->overlay_window);
}
}
void window_realize(GtkWidget *widget, gpointer data) {
GdkWindow *window = gtk_widget_get_window(widget);
gdk_wayland_window_set_use_custom_surface(window);
}
void window_map(GtkWidget *widget, gpointer data) {
struct wd_output *output = data;
GdkWindow *window = gtk_widget_get_window(widget);
cairo_region_t *region = cairo_region_create();
gdk_window_input_shape_combine_region(window, region, 0, 0);
cairo_region_destroy(region);
struct wl_surface *surface = gdk_wayland_window_get_wl_surface(window);
output->overlay_layer_surface = zwlr_layer_shell_v1_get_layer_surface(
output->state->layer_shell, surface, output->wl_output,
ZWLR_LAYER_SHELL_V1_LAYER_TOP, "output-overlay");
zwlr_layer_surface_v1_add_listener(output->overlay_layer_surface,
&layer_surface_listener, output);
zwlr_layer_surface_v1_set_anchor(output->overlay_layer_surface,
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT);
resize(output);
}
void window_unmap(GtkWidget *widget, gpointer data) {
struct wd_output *output = data;
zwlr_layer_surface_v1_destroy(output->overlay_layer_surface);
}
gboolean window_draw(GtkWidget *widget, cairo_t *cr, gpointer data) {
struct wd_output *output = data;
struct wd_head *head = wd_find_head(output->state, output);
GtkStyleContext *style_ctx = gtk_widget_get_style_context(widget);
GdkRGBA fg;
gtk_style_context_get_color(style_ctx, GTK_STATE_FLAG_NORMAL, &fg);
int width = gtk_widget_get_allocated_width(widget);
int height = gtk_widget_get_allocated_height(widget);
gtk_render_background(style_ctx, cr, 0, 0, width, height);
PangoContext *pango = gtk_widget_get_pango_context(widget);
PangoLayout *layout = create_text_layout(head, pango);
gdk_cairo_set_source_rgba(cr, &fg);
pango_cairo_show_layout(cr, layout);
g_object_unref(layout);
return TRUE;
}
void wd_create_overlay(struct wd_output *output) {
output->overlay_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_decorated(GTK_WINDOW(output->overlay_window), FALSE);
gtk_window_set_resizable(GTK_WINDOW(output->overlay_window), FALSE);
gtk_widget_add_events(output->overlay_window, GDK_STRUCTURE_MASK);
g_signal_connect(output->overlay_window, "realize",
G_CALLBACK(window_realize), output);
g_signal_connect(output->overlay_window, "map",
G_CALLBACK(window_map), output);
g_signal_connect(output->overlay_window, "unmap",
G_CALLBACK(window_unmap), output);
g_signal_connect(output->overlay_window, "draw",
G_CALLBACK(window_draw), output);
GtkStyleContext *style_ctx = gtk_widget_get_style_context(
output->overlay_window);
gtk_style_context_add_class(style_ctx, "output-overlay");
gtk_widget_show(output->overlay_window);
}
void wd_destroy_overlay(struct wd_output *output) {
if (output->overlay_window != NULL) {
gtk_widget_destroy(output->overlay_window);
output->overlay_window = NULL;
}
}

32
src/wdisplays.h
View File

@ -44,6 +44,8 @@ struct zwlr_output_head_v1;
struct zwlr_output_manager_v1;
struct zwlr_screencopy_manager_v1;
struct zwlr_screencopy_frame_v1;
struct zwlr_layer_shell_v1;
struct zwlr_layer_surface_v1;
struct _GtkWidget;
typedef struct _GtkWidget GtkWidget;
@ -74,6 +76,8 @@ struct wd_output {
char *name;
struct wl_list frames;
GtkWidget *overlay_window;
struct zwlr_layer_surface_v1 *overlay_layer_surface;
};
struct wd_frame {
@ -126,6 +130,7 @@ struct wd_head {
struct wd_render_head_data *render;
cairo_surface_t *surface;
uint32_t id;
char *name, *description;
int32_t phys_width, phys_height; // mm
struct wl_list modes;
@ -191,6 +196,7 @@ struct wd_state {
struct zxdg_output_manager_v1 *xdg_output_manager;
struct zwlr_output_manager_v1 *output_manager;
struct zwlr_screencopy_manager_v1 *copy_manager;
struct zwlr_layer_shell_v1 *layer_shell;
struct wl_shm *shm;
struct wl_list heads;
struct wl_list outputs;
@ -199,6 +205,7 @@ struct wd_state {
bool apply_pending;
bool autoapply;
bool capture;
bool show_overlay;
double zoom;
struct wd_render_head_data *clicked;
@ -249,7 +256,7 @@ void wd_fatal_error(int status, const char *message);
/*
* Add an output to the list of screen captured outputs.
*/
void wd_add_output(struct wd_state *state, struct wl_output *wl_output);
void wd_add_output(struct wd_state *state, struct wl_output *wl_output, struct wl_display *display);
/*
* Remove an output from the list of screen captured outputs.
@ -261,6 +268,11 @@ void wd_remove_output(struct wd_state *state, struct wl_output *wl_output, struc
* output is disabled.
*/
struct wd_output *wd_find_output(struct wd_state *state, struct wd_head *head);
/*
* Finds the head associated with a given output.
*/
struct wd_head *wd_find_head(struct wd_state *state, struct wd_output *output);
/*
* Starts listening for output management events from the compositor.
*/
@ -313,13 +325,31 @@ void wd_ui_show_error(struct wd_state *state, const char *message);
* Compiles the GL shaders.
*/
struct wd_gl_data *wd_gl_setup(void);
/*
* Renders the GL scene.
*/
void wd_gl_render(struct wd_gl_data *res, struct wd_render_data *info, uint64_t tick);
/*
* Destroys the GL shaders.
*/
void wd_gl_cleanup(struct wd_gl_data *res);
/*
* Create an overlay on the screen that contains a textual description of the
* output. This is to help the user identify the outputs visually.
*/
void wd_create_overlay(struct wd_output *output);
/*
* Forces redrawing of the screen overlay on the given output.
*/
void wd_redraw_overlay(struct wd_output *output);
/*
* Destroys the screen overlay on the given output.
*/
void wd_destroy_overlay(struct wd_output *output);
#endif