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| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | CONTRIBUTING.md | 196 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | README.md | 42 | ||||
| -rw-r--r-- | doc/wlclock.1.scd | 11 | ||||
| -rw-r--r-- | meson.build | 95 | ||||
| -rw-r--r-- | meson_options.txt | 2 | ||||
| -rw-r--r-- | protocol/meson.build | 42 | ||||
| -rw-r--r-- | protocol/wlr-layer-shell-unstable-v1.xml | 285 | ||||
| -rw-r--r-- | src/buffer.c | 184 | ||||
| -rw-r--r-- | src/buffer.h | 25 | ||||
| -rw-r--r-- | src/misc.c | 30 | ||||
| -rw-r--r-- | src/misc.h | 10 | ||||
| -rw-r--r-- | src/output.c | 169 | ||||
| -rw-r--r-- | src/output.h | 33 | ||||
| -rw-r--r-- | src/surface.c | 163 | ||||
| -rw-r--r-- | src/surface.h | 31 | ||||
| -rw-r--r-- | src/wlclock.c | 298 | ||||
| -rw-r--r-- | src/wlclock.h | 40 |
19 files changed, 2331 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..567609b --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +build/ diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..4169bb4 --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,196 @@ +# Contributing to wlclock +This file explains how you can contribute to wlclock. + +For larger contributions, especially for radical changes, I highly recommend you +to ask me whether I will include your commit *before* you start investing time +into it. Also please respect the coding style, even if you do not like it. + + +## Communication +You can ask questions and start discussions on the [mailing list](mailto:~leon_plickat/public-inbox@lists.sr.ht) +or if you find me on IRC (my nick is "leon-p" and you can often find me on +`#sway@freenode.net`). + + +## Sending Patches +You can send your patches via email to the mailing list. See +[this](https://git-send-email.io/) helpful link to learn how to correctly send +emails with git. Alternatively you can also manually attach a git patch file to +a mail, but beware that this is more work for both you and me. + +All code review will happen on the mailing list as well. + +Write good commit messages! + +If you found this project on [GitHub](https://github.com/Leon-Plickat/wlclock), +you can use that platforms contribution workflow and bug tracking system, but +beware that I may be slow to respond to anything but email and that development +officially takes place over at [sourcehut](https://sr.ht/~leon_plickat/wlclock/), +the main hosting platform for this project. + + +## Licensing and Copyright +wlclock is licensed under the GPLv3, which applies to any contributions as +well. I will not accept contributions under a different license, even if you +create new files. The one single exception to this are Wayland protocol +extensions. + +You are strongly invited to add your name to the copyright header of the files +you changed and if you made an important contribution also to the authors +sections in the man page and README. A Free Software project is proud of every +contributor. + + +## Style +This section describes the coding style of wlclock. Try to follow it closely. + +Yes, it is not K&R. Cry me a river. + +Indent with tabs exclusively (looking at you, Emacs users). + +Lines should not exceed 80 characters. It is perfectly fine if a few lines are a +few characters longer, but generally you should break up long lines. + +Braces go on the next line with struct declarations being the only exception. +If only a single operation follows a conditional or loop, braces should not be +used. + + static void function (void) + { + struct Some_struct some_struct = { + .element_1 = 1, + .element_2 = 2 + }; + + if ( val == 1 ) + { + function_2(); + function_3(); + } + else + function_4(); + } + +For switches, indent the case labels once and the following code twice. + + switch (variable) + { + case 1: + /* do stuff... */ + break; + } + +Conditionals are only separated by a space from their surrounding parenthesis +if they contain more than just a single variable. + + if (condition) + { + /* do stuff... */ + } + else if ( variable == value ) + { + /* do stuff... */ + } + +An exception to this are `for` loops, where a space is only but always inserted +after each semicolon. + + for (int a = 0; a < 10; a--) + { + /* do stuff... */ + } + +Logical operators in in-line conditionals or variable declarations / changes do +not necessarily require parenthesis. + + bool variable = a == b; + int another_variable = a > b ? 4 : 5; + +Use `/* comment */` for permanent comments and `// comment` for temporary +comments. + +Sometimes it makes sense to align variable declarations. But only sometimes. + + type name_3 = value; + type_1 name_acs = value; + type_scsdc name_23 = value; + type_abc name_advdfv = value; + +You can combine multiple declarations and calculations with commas. Just be +careful that the code is still readable. + + int a, b; + a = 1 + 2, b = a * 3; + +Name your bloody variables! With very, very few exceptions, a variable name +should at least be three characters long. When someone sees your variable, they +should pretty much immediately know what information is stored in it without +needing to read the entire function. Variable names should generally be lower +case, but exceptions are perfectly fine if justified. + + DoNotUseCamelCase. Underscores_are_more_readable. + +If the data stored in your variable is complex / does complex things / +influences complex things, document that. + +Variables usually should have a lower case name, although exceptions are fine if +justified. The very first letter of a struct type or enum type name must be +capitalised. Members of an enum must be fully caps. + + enum My_fancy_enum + { + FANCY_1, + FANCY_2, + FANCY_3 + } + + struct Fancy_struct + { + int variable; + } + + int another_variable; + struct Fancy_struct fs; + +`switch`, `while` and `for` may be in-lined after an `if` or `else` to +reduce indentation complexity, but only if readability is not compromised and +80 characters are not excessively exceeded. Under the same conditions, `case` +blocks may be in-lined, if they only contains a single operation. + + if (condition) switch (mode) + { + case MODE_1: do_stuff_1(); break; + case MODE_2: do_stuff_2(); break; + case MODE_3: do_stuff_3(); returned; + } + else while (stuff) + { + /* Do things... */ + } + +`if` may be in-lined after `while`, `for` and `else` to reduce indentation +complexity, but only if readability is not compromised and 80 characters are not +excessively exceeded. + + while (variable) if (condition) + { + /* Do stuff... */ + } + + for (int a = b; a > c; a += b) if (condition) + { + /* Do stuff... */ + } + + if (condition) + { + /* Do stuff... */ + } + else if (condition) + { + /* Do stuff... */ + } + +Never in-line variable declaration or changes, function calls or `return`, +`goto`, `break` and friends. + @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + 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 3 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. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>. diff --git a/README.md b/README.md new file mode 100644 index 0000000..84a3bcd --- /dev/null +++ b/README.md @@ -0,0 +1,42 @@ +# wlclock + +wlclock is a digital analog clock for Wayland desktops. + + +## Building + +wlclock depends on Wayland, Wayland protocols and Cairo. + +To build this program you will need a C compiler, the meson & ninja build system +and `scdoc` to generate the manpage. + + git clone https://git.sr.ht/~leon_plickat/wlclock + cd wlclock + meson build + ninja -C build + sudo ninja -C build install + + +## Contributing +**Contributions are welcome!** Read `CONTRIBUTING.md` to find out how you can +contribute. Do not be afraid, it is really not that complicated. + +If you found this project on [GitHub](https://github.com/Leon-Plickat/wlclock), +you can use that platforms contribution workflow and bug tracking system, but +beware that I may be slow to respond to anything but email and that development +officially takes place over at [sourcehut](https://sr.ht/~leon_plickat/wlclock/), +the main hosting platform for this project. + + +## Licensing + +wlclock is licensed under the GPLv3. + +The contents of the `protocol` directory are licensed differently. Please see +the header of the files for more information. + + +## Authors + +Leon Plickat <leonhenrik.plickat@stud.uni-goettingen.de> + diff --git a/doc/wlclock.1.scd b/doc/wlclock.1.scd new file mode 100644 index 0000000..4c0a6f6 --- /dev/null +++ b/doc/wlclock.1.scd @@ -0,0 +1,11 @@ +wlclock(1) ["Version 0.1.0" ["Version 0.1.0"]] + +# NAME +wlclock - A digital analog clock for Wayland + + +# DESCRIPTION + + +# AUTHORS +Leon Henrik Plickat <leonhenrik.plickat@stud.uni-goettingen.de> diff --git a/meson.build b/meson.build new file mode 100644 index 0000000..31a32e1 --- /dev/null +++ b/meson.build @@ -0,0 +1,95 @@ +project( + 'wlclock', + 'c', + version: '0.1.0', + license: 'GPLv3', + default_options: [ + 'c_std=c11', + 'warning_level=3', + 'werror=true', + ] +) + +cc = meson.get_compiler('c') + +add_project_arguments(cc.get_supported_arguments([ + '-D_POSIX_C_SOURCE=200809L', + '-DVERSION="0.1.0"', + '-fsigned-char', + '-Wno-unused-parameter', + '-Wpointer-arith', + '-Wformat-security', + '-Wunreachable-code', + '-Wformat', +]), language: 'c') + +if get_option('handle-signals').enabled() + add_project_arguments(cc.get_supported_arguments([ '-DHANDLE_SIGNALS' ]), language: 'c') +endif + +wayland_protocols = dependency('wayland-protocols') +wayland_client = dependency('wayland-client', include_type: 'system') +wayland_cursor = dependency('wayland-cursor', include_type: 'system') +cairo = dependency('cairo') +realtime = cc.find_library('rt') + +if ['dragonfly', 'freebsd', 'netbsd', 'openbsd'].contains(host_machine.system()) + libepoll = dependency('epoll-shim', required: get_option('handle-signals')) +else + libepoll = [] +endif + +subdir('protocol') + +executable( + 'wlclock', + files( + 'src/buffer.c', + 'src/misc.c', + 'src/output.c', + 'src/surface.c', + 'src/wlclock.c', + ), + dependencies: [ + wayland_client, + wayland_protocols, + wayland_cursor, + cairo, + wl_protocols, + realtime, + libepoll, + ], + include_directories: include_directories('src'), + install: true, +) + +scdoc = dependency( + 'scdoc', + version: '>=1.9.2', + native: true, + required: get_option('man-pages'), +) +if scdoc.found() + scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true) + sh = find_program('sh', native: true) + mandir = get_option('mandir') + man_files = [ + 'doc/wlclock.1.scd' + ] + foreach filename : man_files + topic = filename.split('.')[-3].split('/')[-1] + section = filename.split('.')[-2] + output = '@0@.@1@'.format(topic, section) + + custom_target( + output, + input: filename, + output: output, + command: [ + sh, '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.path(), output) + ], + install: true, + install_dir: '@0@/man@1@'.format(mandir, section) + ) + endforeach +endif diff --git a/meson_options.txt b/meson_options.txt new file mode 100644 index 0000000..020b255 --- /dev/null +++ b/meson_options.txt @@ -0,0 +1,2 @@ +option('man-pages', type: 'feature', value: 'auto', description: 'Generate and install man pages') +option('handle-signals', type: 'feature', value: 'enabled', description: 'Handle signals') diff --git a/protocol/meson.build b/protocol/meson.build new file mode 100644 index 0000000..d5d972a --- /dev/null +++ b/protocol/meson.build @@ -0,0 +1,42 @@ +wp_dir = wayland_protocols.get_pkgconfig_variable('pkgdatadir') + +wayland_scanner_dep = dependency('wayland-scanner', native: true) +wayland_scanner = find_program( + wayland_scanner_dep.get_pkgconfig_variable('wayland_scanner'), + native: true, +) + +protocols = [ + [ wp_dir, 'stable/xdg-shell/xdg-shell.xml' ], + [ wp_dir, 'unstable/xdg-output/xdg-output-unstable-v1.xml' ], + [ 'wlr-layer-shell-unstable-v1.xml' ], +] + +wl_protocols_src = [] +wl_protocols_headers = [] +foreach p : protocols + xml = join_paths(p) + wl_protocols_src += custom_target( + xml.underscorify() + '_server_c', + input: xml, + output: '@BASENAME@-protocol.c', + command: [ wayland_scanner, 'private-code', '@INPUT@', '@OUTPUT@' ], + ) + wl_protocols_headers += custom_target( + xml.underscorify() + '_client_h', + input: xml, + output: '@BASENAME@-protocol.h', + command: [ wayland_scanner, 'client-header', '@INPUT@', '@OUTPUT@' ], + ) +endforeach + +wl_protocols_lib = static_library( + 'wlclock_protocols', + wl_protocols_src + wl_protocols_headers, + dependencies: [ wayland_client ], +) + +wl_protocols = declare_dependency( + link_with: wl_protocols_lib, + sources: wl_protocols_headers, +) diff --git a/protocol/wlr-layer-shell-unstable-v1.xml b/protocol/wlr-layer-shell-unstable-v1.xml new file mode 100644 index 0000000..6a5d5d3 --- /dev/null +++ b/protocol/wlr-layer-shell-unstable-v1.xml @@ -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 accomodate 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> diff --git a/src/buffer.c b/src/buffer.c new file mode 100644 index 0000000..83f48ad --- /dev/null +++ b/src/buffer.c @@ -0,0 +1,184 @@ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <time.h> +#include <sys/mman.h> +#include <cairo/cairo.h> + +#include"buffer.h" +#include"misc.h" + +static void randomize_string (char *str, size_t len) +{ + struct timespec ts; + clock_gettime(CLOCK_REALTIME, &ts); + long r = ts.tv_nsec; + + for (size_t i = 0; i < len; i++, str++) + { + /* Use two byte from the current nano-second to pseudo-randomly + * increase the ASCII character 'A' into another character, + * which will then subsitute the character at *str. + */ + *str = (char)('A' + (r&15) + (r&16)); + r >>= 5; + } +} + +/* Tries to create a shared memory object and returns its file descriptor if + * successful. + */ +static bool get_shm_fd (int *fd, size_t size) +{ + char name[] = "/wlclock-RANDOM"; + char *rp = name + 9; /* Pointer to random part. */ + size_t rl = 6; /* Length of random part. */ + + /* Try a few times to get a unique name. */ + for (int tries = 100; tries > 0; tries--) + { + /* Make the name pseudo-random to not conflict with other + * running instances of Wlclock. + */ + randomize_string(rp, rl); + + /* Try to create a shared memory object. Returns -1 if the + * memory object already exists. + */ + errno = 0; + *fd = shm_open(name, O_RDWR | O_CREAT | O_EXCL, 0600); + + /* If a shared memory object was created, set its size and + * return its file descriptor. + */ + if ( *fd >= 0 ) + { + shm_unlink(name); + if ( ftruncate(*fd, (off_t)size) < 0 ) + { + close(*fd); + return false; + } + return true; + } + + /* The EEXIST error means that the name is not unique and we + * must try again. + */ + if ( errno != EEXIST ) + { + clocklog(NULL, 0, "ERROR: shm_open: %s\n", strerror(errno)); + return false; + } + } + + return false; +} + +static void buffer_handle_release (void *data, struct wl_buffer *wl_buffer) +{ + struct Wlclock_buffer *buffer = (struct Wlclock_buffer *)data; + buffer->busy = false; +} + +static const struct wl_buffer_listener buffer_listener = { + .release = buffer_handle_release, +}; + +static bool create_buffer (struct wl_shm *shm, struct Wlclock_buffer *buffer, + uint32_t _w, uint32_t _h) +{ + int32_t w = (int32_t)_w, h = (int32_t)_h; + + const enum wl_shm_format wl_fmt = WL_SHM_FORMAT_ARGB8888; + const cairo_format_t cairo_fmt = CAIRO_FORMAT_ARGB32; + + int32_t stride = cairo_format_stride_for_width(cairo_fmt, w); + size_t size = (size_t)(stride * h); + + buffer->w = _w; + buffer->h = _h; + buffer->size = size; + + if ( size == 0 ) + { + buffer->memory_object = NULL; + buffer->surface = NULL; + buffer->cairo = NULL; + return true; + } + + int fd; + if (! get_shm_fd(&fd, size)) + return false; + + errno = 0; + if ( MAP_FAILED == (buffer->memory_object = mmap(NULL, size, + PROT_READ | PROT_WRITE, MAP_SHARED, + fd, 0)) ) + { + close(fd); + clocklog(NULL, 0, "ERROR: mmap: %s\n", strerror(errno)); + return false; + } + + struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, (int32_t)size); + buffer->buffer = wl_shm_pool_create_buffer(pool, 0, w, h, stride, + wl_fmt); + wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer); + wl_shm_pool_destroy(pool); + + close(fd); + + buffer->surface = cairo_image_surface_create_for_data( + buffer->memory_object, cairo_fmt, w, h, stride); + buffer->cairo = cairo_create(buffer->surface); + + return true; +} + +void finish_buffer (struct Wlclock_buffer *buffer) +{ + if (buffer->buffer) + wl_buffer_destroy(buffer->buffer); + if (buffer->cairo) + cairo_destroy(buffer->cairo); + if (buffer->surface) + cairo_surface_destroy(buffer->surface); + if (buffer->memory_object) + munmap(buffer->memory_object, buffer->size); + memset(buffer, 0, sizeof(struct Wlclock_buffer)); +} + +bool next_buffer (struct Wlclock_buffer **buffer, struct wl_shm *shm, + struct Wlclock_buffer buffers[static 2], uint32_t w, uint32_t h) +{ + /* Check if buffers are busy and use first non-busy one, if it exists. + * If all buffers are busy, exit. + */ + if (! buffers[0].busy) + *buffer = &buffers[0]; + else if (! buffers[1].busy) + *buffer = &buffers[1]; + else + { + clocklog(NULL, 0, "ERROR: All buffers are busy.\n"); + *buffer = NULL; + return false; + } + + /* If the buffers dimensions do not match, or if there is no wl_buffer + * or if the buffer does not exist, close it and create a new one. + */ + if ( (*buffer)->w != w || (*buffer)->h != h || ! (*buffer)->buffer ) + { + finish_buffer(*buffer); + if (! create_buffer(shm, *buffer, w, h)) + return false; + } + + return true; +} diff --git a/src/buffer.h b/src/buffer.h new file mode 100644 index 0000000..3e82541 --- /dev/null +++ b/src/buffer.h @@ -0,0 +1,25 @@ +#ifndef WLCLOCK_BUFFER_H +#define WLCLOCK_BUFFER_H + +#include<stdint.h> +#include<stdbool.h> +#include<cairo/cairo.h> +#include<wayland-client.h> + +struct Wlclock_buffer +{ + struct wl_buffer *buffer; + cairo_surface_t *surface; + cairo_t *cairo; + uint32_t w; + uint32_t h; + void *memory_object; + size_t size; + bool busy; +}; + +bool next_buffer (struct Wlclock_buffer **buffer, struct wl_shm *shm, + struct Wlclock_buffer buffers[static 2], uint32_t w, uint32_t h); +void finish_buffer (struct Wlclock_buffer *buffer); + +#endif diff --git a/src/misc.c b/src/misc.c new file mode 100644 index 0000000..dd4500d --- /dev/null +++ b/src/misc.c @@ -0,0 +1,30 @@ +#include<stdarg.h> +#include<stdio.h> +#include<stdlib.h> +#include<string.h> +#include<unistd.h> + +#include"wlclock.h" + +void free_if_set (void *ptr) +{ + if ( ptr != NULL ) + free(ptr); +} + +void set_string (char **ptr, char *arg) +{ + free_if_set(*ptr); + *ptr = strdup(arg); +} + +void clocklog (struct Wlclock *clock, int level, const char *fmt, ...) +{ + if ( clock != NULL && level > clock->verbosity ) + return; + + va_list args; + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); +} diff --git a/src/misc.h b/src/misc.h new file mode 100644 index 0000000..f262771 --- /dev/null +++ b/src/misc.h @@ -0,0 +1,10 @@ +#ifndef WLCLOCK_MISC_H +#define WLCLOCK_MISC_H + +struct Wlclock; + +void free_if_set (void *ptr); +void set_string (char **ptr, char *arg); +void clocklog (struct Wlclock *clock, int level, const char *fmt, ...); + +#endif diff --git a/src/output.c b/src/output.c new file mode 100644 index 0000000..102d510 --- /dev/null +++ b/src/output.c @@ -0,0 +1,169 @@ +#include<stdio.h> +#include<stdlib.h> +#include<stdbool.h> +#include<unistd.h> +#include<string.h> +#include<assert.h> + +#include<wayland-server.h> +#include<wayland-client.h> +#include<wayland-client-protocol.h> + +#include"xdg-output-unstable-v1-protocol.h" +#include"xdg-shell-protocol.h" + +#include"wlclock.h" +#include"misc.h" +#include"output.h" +#include"surface.h" + +/* No-Op function. */ +static void noop () {} + +static void output_handle_scale (void *data, struct wl_output *wl_output, + int32_t factor) +{ + struct Wlclock_output *output = (struct Wlclock_output *)data; + output->scale = (uint32_t)factor; + clocklog(output->clock, 1, "[output] Property update: global_name=%d scale=%d\n", + output->global_name, output->scale); +} + +static void output_update_surface (struct Wlclock_output *output) +{ + if ( ! output->configured || output->name == NULL ) + return; + + struct Wlclock *clock = output->clock; + if ( clock->output == NULL || ! strcmp(clock->output, output->name) ) + create_surface(output); +} + +static void output_handle_done (void *data, struct wl_output *wl_output) +{ + /* This event is sent after all output property changes (by wl_output + * and by xdg_output) have been advertised by preceding events. + */ + struct Wlclock_output *output = (struct Wlclock_output *)data; + clocklog(output->clock, 1, "[output] Atomic update complete: global_name=%d\n", + output->global_name); + if ( output->surface != NULL ) + update_surface(output->surface); + else + output_update_surface(output); +} + +static const struct wl_output_listener output_listener = { + .scale = output_handle_scale, + .geometry = noop, + .mode = noop, + .done = output_handle_done +}; + +static void xdg_output_handle_name (void *data, struct zxdg_output_v1 *xdg_output, + const char *name) +{ + struct Wlclock_output *output = (struct Wlclock_output *)data; + set_string(&output->name, (char *)name); + clocklog(output->clock, 1, "[output] Property update: global_name=%d name=%s\n", + output->global_name, name); +} + +static const struct zxdg_output_v1_listener xdg_output_listener = { + .name = xdg_output_handle_name, + .logical_size = noop, + .logical_position = noop, + .description = noop, + + /* Deprecated since version 3, xdg_output property changes now send wl_output.done */ + .done = noop +}; + +bool configure_output (struct Wlclock_output *output) +{ + struct Wlclock *clock = output->clock; + clocklog(clock, 1, "[output] Configuring: global_name=%d\n", output->global_name); + + /* Create xdg_output and attach listeners. */ + if ( NULL == (output->xdg_output = zxdg_output_manager_v1_get_xdg_output( + clock->xdg_output_manager, output->wl_output)) ) + { + clocklog(NULL, 0, "ERROR: Could not get XDG output.\n"); + return false; + } + + zxdg_output_v1_add_listener(output->xdg_output, &xdg_output_listener, output); + output->configured = true; + return true; +} + +bool create_output (struct Wlclock *clock, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + clocklog(clock, 1, "[output] Creating: global_name=%d\n", name); + + struct wl_output *wl_output = wl_registry_bind(registry, name, + &wl_output_interface, 3); + assert(wl_output); + + struct Wlclock_output *output = calloc(1, sizeof(struct Wlclock_output)); + if ( output == NULL ) + { + clocklog(NULL, 0, "ERROR: Could not allocate.\n"); + return false; + } + + output->clock = clock; + output->global_name = name; + output->scale = 1; + output->wl_output = wl_output; + output->configured = false; + output->name = NULL; + + wl_list_insert(&clock->outputs, &output->link); + wl_output_set_user_data(wl_output, output); + wl_output_add_listener(wl_output, &output_listener, output); + + /* We can only use the output if we have both xdg_output_manager and + * the layer_shell. If either one is not available yet, we have to + * configure the output later (see init_wayland()). + */ + if ( clock->xdg_output_manager != NULL && clock->layer_shell != NULL ) + { + if (! configure_output(output)) + return false; + } + else + clocklog(clock, 2, "[output] Not yet configureable.\n"); + + return true; +} + +struct Wlclock_output *get_output_from_global_name (struct Wlclock *clock, uint32_t name) +{ + struct Wlclock_output *op; + wl_list_for_each(op, &clock->outputs, link) + if ( op->global_name == name ) + return op; + return NULL; +} + +void destroy_output (struct Wlclock_output *output) +{ + if ( output == NULL ) + return; + if ( output->surface != NULL ) + destroy_surface(output->surface); + wl_list_remove(&output->link); + wl_output_destroy(output->wl_output); + free(output); +} + +void destroy_all_outputs (struct Wlclock *clock) +{ + clocklog(clock, 1, "[output] Destroying all outputs.\n"); + struct Wlclock_output *op, *tmp; + wl_list_for_each_safe(op, tmp, &clock->outputs, link) + destroy_output(op); +} + diff --git a/src/output.h b/src/output.h new file mode 100644 index 0000000..0085bd7 --- /dev/null +++ b/src/output.h @@ -0,0 +1,33 @@ +#ifndef WLCLOCK_OUTPUT_H +#define WLCLOCK_OUTPUT_H + +#include<wayland-server.h> + +struct Wlclock; +struct Wlclock_surface; + +struct Wlclock_output +{ + struct wl_list link; + struct Wlclock *clock; + + struct wl_output *wl_output; + struct zxdg_output_v1 *xdg_output; + + char *name; + uint32_t global_name; + uint32_t scale; + + bool configured; + + struct Wlclock_surface *surface; +}; + +bool create_output (struct Wlclock *clock, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version); +bool configure_output (struct Wlclock_output *output); +struct Wlclock_output *get_output_from_global_name (struct Wlclock *clock, uint32_t name); +void destroy_output (struct Wlclock_output *output); +void destroy_all_outputs (struct Wlclock *clock); + +#endif diff --git a/src/surface.c b/src/surface.c new file mode 100644 index 0000000..9e6c8e2 --- /dev/null +++ b/src/surface.c @@ -0,0 +1,163 @@ +#include<stdio.h> +#include<stdlib.h> +#include<stdbool.h> +#include<unistd.h> +#include<string.h> + +#include<cairo/cairo.h> +#include<wayland-server.h> +#include<wayland-client.h> +#include<wayland-client-protocol.h> + +#include"wlr-layer-shell-unstable-v1-protocol.h" +#include"xdg-output-unstable-v1-protocol.h" +#include"xdg-shell-protocol.h" + +#include"wlclock.h" +#include"output.h" +#include"misc.h" +#include"surface.h" +#include"buffer.h" + +static uint32_t min (uint32_t a, uint32_t b) +{ + return a > b ? b : a; +} + +static void layer_surface_handle_configure (void *data, + struct zwlr_layer_surface_v1 *layer_surface, uint32_t serial, + uint32_t w, uint32_t h) +{ + struct Wlclock_surface *surface = (struct Wlclock_surface *)data; + clocklog(surface->output->clock, 1, + "[surface] Layer surface configure request: global_name=%d w=%d h=%d serial=%d\n", + surface->output->global_name, w, h, serial); + zwlr_layer_surface_v1_ack_configure(layer_surface, serial); + if ( w > 0 && h > 0 ) /* Try to fit as best as possible. */ + surface->size = min(w, h); + surface->configured = true; + update_surface(surface); +} + +static void layer_surface_handle_closed (void *data, struct zwlr_layer_surface_v1 *layer_surface) +{ + struct Wlclock_surface *surface = (struct Wlclock_surface *)data; + clocklog(surface->output->clock, 1, + "[surface] Layer surface has been closed: global_name=%d\n", + surface->output->global_name); + destroy_surface(surface); +} + +const struct zwlr_layer_surface_v1_listener layer_surface_listener = { + .configure = layer_surface_handle_configure, + .closed = layer_surface_handle_closed +}; + +static int32_t get_exclusive_zone (struct Wlclock_surface *surface) +{ + if ( surface->output->clock->exclusive_zone == 1 ) + return surface->size; + return surface->output->clock->exclusive_zone; +} + +static void configure_layer_surface (struct Wlclock_surface *surface) +{ + struct Wlclock *clock = surface->output->clock; + clocklog(clock, 1, "[surface] Configuring surface: global_name=%d\n", + surface->output->global_name); + zwlr_layer_surface_v1_set_size(surface->layer_surface, + surface->size, surface->size); + zwlr_layer_surface_v1_set_anchor(surface->layer_surface, clock->anchor); + zwlr_layer_surface_v1_set_margin(surface->layer_surface, + clock->margin_top, clock->margin_right, + clock->margin_bottom, clock->margin_left); + zwlr_layer_surface_v1_set_exclusive_zone(surface->layer_surface, + get_exclusive_zone(surface)); + if (! clock->input) + { + struct wl_region *region = wl_compositor_create_region(clock->compositor); + wl_surface_set_input_region(surface->surface, region); + wl_region_destroy(region); + } +} + +bool create_surface (struct Wlclock_output *output) +{ + struct Wlclock *clock = output->clock; + clocklog(clock, 1, "[surface] Creating surface: global_name=%d\n", output->global_name); + + struct Wlclock_surface *surface = calloc(1, sizeof(struct Wlclock_surface)); + if ( surface == NULL ) + { + clocklog(NULL, 0, "ERROR: Could not allocate.\n"); + return false; + } + + output->surface = surface; + surface->size = clock->size; + surface->output = output; + surface->surface = NULL; + surface->layer_surface = NULL; + surface->configured = false; + + if ( NULL == (surface->surface = wl_compositor_create_surface(clock->compositor)) ) + { + clocklog(NULL, 0, "ERROR: Compositor did not create wl_surface.\n"); + return false; + } + if ( NULL == (surface->layer_surface = zwlr_layer_shell_v1_get_layer_surface( + clock->layer_shell, surface->surface, + output->wl_output, clock->layer, + clock->namespace)) ) + { + clocklog(NULL, 0, "ERROR: Compositor did not create layer_surface.\n"); + return false; + } + + configure_layer_surface(surface); + zwlr_layer_surface_v1_add_listener(surface->layer_surface, + &layer_surface_listener, surface); + wl_surface_commit(surface->surface); + + return true; +} + +void destroy_surface (struct Wlclock_surface *surface) +{ + if ( surface == NULL ) + return; + if ( surface->layer_surface != NULL ) + zwlr_layer_surface_v1_destroy(surface->layer_surface); + if ( surface->surface != NULL ) + wl_surface_destroy(surface->surface); + finish_buffer(&surface->buffers[0]); + finish_buffer(&surface->buffers[1]); + free(surface); +} + +void destroy_all_surfaces (struct Wlclock *clock) +{ + clocklog(clock, 1, "[surface] Destroying all surfaces.\n"); + struct Wlclock_output *op, *tmp; + wl_list_for_each_safe(op, tmp, &clock->outputs, link) + if ( op->surface != NULL ) + destroy_surface(op->surface); +} + +void update_surface (struct Wlclock_surface *surface) +{ + if ( surface == NULL || ! surface->configured ) + return; + configure_layer_surface(surface); + // render_surface_frame(surface); // TODO + wl_surface_commit(surface->surface); +} + +void update_all_surfaces (struct Wlclock *clock) +{ + clocklog(clock, 1, "[surface] Updating all surfaces.\n"); + struct Wlclock_output *op, *tmp; + wl_list_for_each_safe(op, tmp, &clock->outputs, link) + if ( op->surface != NULL ) + update_surface(op->surface); +} diff --git a/src/surface.h b/src/surface.h new file mode 100644 index 0000000..8fd99bc --- /dev/null +++ b/src/surface.h @@ -0,0 +1,31 @@ +#ifndef WLCLOCK_SURFACE_H +#define WLCLOCK_SURFACE_H + +#include<wayland-server.h> + +#include"buffer.h" + +#include<stdint.h> +#include<stdbool.h> + +struct Wlclock; +struct Wlclock_output; + +struct Wlclock_surface +{ + struct Wlclock_output *output; + struct wl_surface *surface; + struct zwlr_layer_surface_v1 *layer_surface; + + int32_t size; + struct Wlclock_buffer buffers[2]; + bool configured; +}; + +bool create_surface (struct Wlclock_output *output); +void destroy_surface (struct Wlclock_surface *surface); +void destroy_all_surfaces (struct Wlclock *clock); +void update_surface (struct Wlclock_surface *surface); +void update_all_surfaces (struct Wlclock *clock); + +#endif diff --git a/src/wlclock.c b/src/wlclock.c new file mode 100644 index 0000000..a676285 --- /dev/null +++ b/src/wlclock.c @@ -0,0 +1,298 @@ +#include<errno.h> +#include<getopt.h> +#include<poll.h> +#include<stdbool.h> +#include<stdio.h> +#include<stdlib.h> +#include<string.h> +#include<unistd.h> + +#if HANDLE_SIGNALS +#include<sys/signalfd.h> +#include<signal.h> +#endif + +#include<wayland-server.h> +#include<wayland-client.h> +#include<wayland-client-protocol.h> + +#include"wlr-layer-shell-unstable-v1-protocol.h" +#include"xdg-output-unstable-v1-protocol.h" +#include"xdg-shell-protocol.h" + +#include"wlclock.h" +#include"misc.h" +#include"output.h" +#include"surface.h" + +static void registry_handle_global (void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + struct Wlclock *clock = (struct Wlclock *)data; + + if (! strcmp(interface, wl_compositor_interface.name)) + { + clocklog(clock, 2, "[main] Get wl_compositor.\n"); + clock->compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 4); + } + else if (! strcmp(interface, wl_shm_interface.name)) + { + clocklog(clock, 2, "[main] Get wl_shm.\n"); + clock->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1); + } + else if (! strcmp(interface, zwlr_layer_shell_v1_interface.name)) + { + clocklog(clock, 2, "[main] Get zwlr_layer_shell_v1.\n"); + clock->layer_shell = wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, 1); + } + else if (! strcmp(interface, zxdg_output_manager_v1_interface.name)) + { + clocklog(clock, 2, "[main] Get zxdg_output_manager_v1.\n"); + clock->xdg_output_manager = wl_registry_bind(registry, name, &zxdg_output_manager_v1_interface, 3); + } + else if (! strcmp(interface, wl_output_interface.name)) + { + if (! create_output(data, registry, name, interface, version)) + goto error; + } + + return; +error: + clock->loop = false; + clock->ret = EXIT_FAILURE; +} + +static void registry_handle_global_remove (void *data, + struct wl_registry *registry, uint32_t name) +{ + struct Wlclock *clock = (struct Wlclock *)data; + clocklog(clock, 1, "[main] Global remove.\n"); + destroy_output(get_output_from_global_name(clock, name)); +} + +static const struct wl_registry_listener registry_listener = { + .global = registry_handle_global, + .global_remove = registry_handle_global_remove +}; + +/* Helper function for capability support error message. */ +static bool capability_test (void *ptr, const char *name) +{ + if ( ptr != NULL ) + return true; + clocklog(NULL, 0, "ERROR: Wayland compositor does not support %s.\n", name); + return false; +} + +static bool init_wayland (struct Wlclock *clock) +{ + clocklog(clock, 1, "[main] Init Wayland.\n"); + + /* Connect to Wayland server. */ + clocklog(clock, 2, "[main] Connecting to server.\n"); + if ( NULL == (clock->display = wl_display_connect(NULL)) ) + { + clocklog(NULL, 0, "ERROR: Can not connect to a Wayland server.\n"); + return false; + } + + /* Get registry and add listeners. */ + clocklog(clock, 2, "[main] Get wl_registry.\n"); + if ( NULL == (clock->registry = wl_display_get_registry(clock->display)) ) + { + clocklog(NULL, 0, "ERROR: Can not get registry.\n"); + return false; + } + wl_registry_add_listener(clock->registry, ®istry_listener, clock); + + /* Allow registry listeners to catch up. */ + if ( wl_display_roundtrip(clock->display) == -1 ) + { + clocklog(NULL, 0, "ERROR: Roundtrip failed.\n"); + return false; + } + + /* Testing compatibilities. */ + if (! capability_test(clock->compositor, "wl_compositor")) + return false; + if (! capability_test(clock->shm, "wl_shm")) + return false; + if (! capability_test(clock->layer_shell, "zwlr_layer_shell")) + return false; + if (! capability_test(clock->xdg_output_manager, "xdg_output_manager")) + return false; + + clocklog(clock, 2, "[main] Catching up on output configuration.\n"); + struct Wlclock_output *op; + wl_list_for_each(op, &clock->outputs, link) + if ( ! op->configured && ! configure_output(op) ) + return false; + + return true; +} + +/* Finish him! */ +static void finish_wayland (struct Wlclock *clock) +{ + clocklog(clock, 1, "[main] Finish Wayland.\n"); + + destroy_all_outputs(clock); + + clocklog(clock, 2, "[main] Destroying Wayland objects.\n"); + if ( clock->layer_shell != NULL ) + zwlr_layer_shell_v1_destroy(clock->layer_shell); + if ( clock->compositor != NULL ) + wl_compositor_destroy(clock->compositor); + if ( clock->shm != NULL ) + wl_shm_destroy(clock->shm); + if ( clock->registry != NULL ) + wl_registry_destroy(clock->registry); + + if ( clock->display != NULL ) + { + clocklog(clock, 2, "[main] Diconnecting from server.\n"); + wl_display_disconnect(clock->display); + } +} + +static bool handle_command_flags (struct Wlclock *clock, int argc, char *argv[]) +{ + static struct option opts[] = { + {"help", no_argument, NULL, 'h'}, + {"verbose", no_argument, NULL, 'v'}, + {"version", no_argument, NULL, 'V'}, + + {"output", required_argument, NULL, 100}, + {"no-input", no_argument, NULL, 101} + }; + + const char *usage = + "Usage: wlclock [options]\n" + "\n" + " -h, --help Show this helptext.\n" + " -v, --verbose Increase verbosity of output.\n" + " -V, --version Show the version.\n" + " --output Name of output the clock should be displayed on.\n" + " --no-input The clock surface will not catch input events.\n" + "\n"; + + int opt; + extern int optind; + extern char *optarg; + while ( (opt = getopt_long(argc, argv, "hvV", opts, &optind)) != -1 ) switch (opt) + { + case 'h': + fputs(usage, stderr); + clock->ret = EXIT_SUCCESS; + return false; + + case 'v': + clock->verbosity++; + break; + + case 'V': + fputs("wlclock version " VERSION "\n", stderr); + clock->ret = EXIT_SUCCESS; + return false; + + case 100: + set_string(&clock->output, optarg); + break; + + case 101: + clock->input = false; + break; + + default: + return false; + } + + return true; +} + +static time_t get_timeout (time_t now) +{ + return ((now / 60 * 60 ) + 60 - now) * 1000; +} + +static void clock_run (struct Wlclock *clock) +{ + clocklog(clock, 1, "[main] Starting loop.\n"); + + clock->ret = EXIT_SUCCESS; + + struct pollfd fds[] = { + { .fd = wl_display_get_fd(clock->display), .events = POLLIN } + }; + + while (clock->loop) + { + /* Flush Wayland events. */ + errno = 0; + do { + if ( wl_display_flush(clock->display) == 1 && errno != EAGAIN ) + { + clocklog(NULL, 0, "ERROR: wl_display_flush: %s\n", + strerror(errno)); + break; + } + } while ( errno == EAGAIN ); + + clock->now = time(NULL); + errno = 0; + int ret = poll(fds, 1, get_timeout(clock->now)); + + if ( ret == 0 ) + update_all_surfaces(clock); + else if ( ret > 0 ) + { + if ( fds[0].revents & POLLIN && wl_display_dispatch(clock->display) == -1 ) + { + clocklog(NULL, 0, "ERROR: wl_display_flush: %s\n", strerror(errno)); + goto error; + } + if ( fds[0].revents & POLLOUT && wl_display_flush(clock->display) == -1 ) + { + clocklog(NULL, 0, "ERROR: wl_display_flush: %s\n", strerror(errno)); + goto error; + } + } + else + clocklog(NULL, 0, "ERROR: poll: %s\n", strerror(errno)); + } + + return; +error: + clock->ret = EXIT_FAILURE; + return; +} + +int main (int argc, char *argv[]) +{ + struct Wlclock clock = { 0 }; + clock.ret = EXIT_FAILURE; + clock.loop = true; + clock.verbosity = 0; + clock.size = 100; + clock.exclusive_zone = 1; + clock.input = true; + clock.layer = ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM; + clock.anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM; + set_string(&clock.namespace, "wlclock"); + wl_list_init(&clock.outputs); + + if (! handle_command_flags(&clock, argc, argv)) + return clock.ret; + + clocklog(&clock, 1, "[main] wlclock: version=%s\n", VERSION); + + if (! init_wayland(&clock)) + goto exit; + + clock_run(&clock); + +exit: + finish_wayland(&clock); + return clock.ret; +} + diff --git a/src/wlclock.h b/src/wlclock.h new file mode 100644 index 0000000..684c4b3 --- /dev/null +++ b/src/wlclock.h @@ -0,0 +1,40 @@ +#ifndef WLCLOCK_WLCLOCK_H +#define WLCLOCK_WLCLOCK_H + +#include<stdbool.h> +#include<stdint.h> +#include<time.h> +#include<wayland-server.h> + +#include"wlr-layer-shell-unstable-v1-protocol.h" + +struct Wlclock +{ + struct wl_display *display; + struct wl_registry *registry; + struct wl_compositor *compositor; + struct wl_shm *shm; + struct zwlr_layer_shell_v1 *layer_shell; + struct zxdg_output_manager_v1 *xdg_output_manager; + + struct wl_list outputs; + char *output; + + time_t now; + + bool loop; + int verbosity; + int ret; + + enum zwlr_layer_shell_v1_layer layer; + uint32_t size; + char *namespace; + int32_t exclusive_zone; + uint32_t border_top, border_right, border_bottom, border_left; + uint32_t margin_top, margin_right, margin_bottom, margin_left; + uint32_t radius_top_left, radius_top_right, radius_bottom_left, radius_bottom_right; + uint32_t anchor; + bool input; +}; + +#endif |