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| | # Emacs supporting pure-gtk3
In this fork, I'm working to make Emacs support pure-gtk3, in order to support Wayland.
## Building
You need cairo.
```sh
git clone https://github.com/masm11/emacs.git
cd emacs
./autogen.sh
./configure --without-x --with-cairo --with-modules
make
```
Ignore warnings.
#### For archlinux users
This repository contains PKGBUILD, so you can install by:
```
mkdir /tmp/emacs
cd /tmp/emacs
wget https://raw.githubusercontent.com/masm11/emacs/pgtk/PKGBUILD
makepkg -s
sudo pacman -U emacs-pgtk*.tar.xz
```
## Running
```sh
cd src
GDK_BACKEND=wayland ./emacs (or try ./emacs -Q if you have problems.)
```
## X11 and Wayland
Of course, PGTK supports X11 and Wayland connections.
You can use `GDK_BACKEND` environment variable and `--display` option,
and you can do `(make-frame-on-display display-name)` with display-name of
different backend from the first frame.
You can know which backend is used for a frame:
```elisp
(pgtk-backend-display-class)
```
This returns `"GdkWaylandDisplay"` for Wayland, or `"GdkX11Display"` for X11.
Note: Segmentation fault may occur on multiple display environment.
## Instead of xrdb
X has the resource database, and you could store initial default values into it.
Gtk/Gdk can't handle it even if on X11, so I implemented similar feature using gsettings.
Saving:
```elisp
(pgtk-set-resource "background" "gray")
```
Getting:
```elisp
(x-get-resource "background" "Background")
```
If your emacs got failing to start, then edit your settings with `dconf-editor`.
Your settings are saved under `/org/gnu/emacs/defaults-by-name/<instance-name>/` and
`/org/gnu/emacs/defaults-by-class/`. All are of string type.
Correct your mistakes.
## TODO
Known problems:
- Segmentation fault while multiple-display.
- Exits when a connection to display server is closed by peer. (I may not be able to resolve.)
Not implemented:
- GTK on wayland does not implement functions for these features:
- x_set_offset
- x_set_no_focus_on_map
- x_set_no_accept_focus
- x_set_z_group
- auto-raise/lower
- GTK does not implement functions for these features:
- vendor_specific_keysyms
- Some other features. Keywords:
- popup_activated
- gtk_plug (not exists on wayland)
- x_set_parent_frame
- frame_x_embedded_p
I may not develop them because I don't use them.
## Debugging
Edit src/pgtkterm.h to uncomment:
```c
#define PGTK_DEBUG 1
```
It enables so much debugging outputs.
On gdb, you may want to do:
```
(gdb) handle SIGPIPE nostop noprint
```
## Input Methods
```elisp
(when (eq window-system 'pgtk)
(pgtk-use-im-context t))
```
This enables Gtk's `GtkIMContext`.
However, when you type e.g. `C-x o`,
`C-x` goes through input methods and is handled by Emacs,
and `o` is handled by input methods, so `お` appears as a preedit text.
I have no idea. You can turn off input method before typing `C-x o`.
I do, so no problem.
## My Environment
- archlinux
- gtk+ 3.24.13
- glib2 2.62.4
- gcc 9.2.0
- wayland 1.17.0
- wayland-protocols 1.18
- cairo 1.17.2
- freetype2 2.10.1
- imagemagick 7.0.9.16
- ibus 1.5.21
- mozc 2.23.2815.102
- wayfire 57a585d
## Notice
- Commit messages are in Japanese.
## About me
masm11.
|