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Add screen magnifier

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This adds a screen magnifier which can be controlled with the
`ZoomIn` / `ZoomOut` and `ToggleMagnify` actions.

It scales up part of the rendered framebuffer so the magnification
may end up looking blurry depending on the magnification scale.

PR #1774
This commit is contained in:
Simon Long 2024-05-15 23:07:23 +01:00 • committed by GitHub
parent ad15c0474d
commit 8ba066a1a5
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GPG key ID: B5690EEEBB952194
13 changed files with 473 additions and 1 deletions
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7
include/config/rcxml.h
View file

@ -140,6 +140,13 @@ struct rcxml {
/* Menu */
unsigned int menu_ignore_button_release_period;
/* Magnifier */
int mag_width;
int mag_height;
float mag_scale;
float mag_increment;
bool mag_filter;
};
extern struct rcxml rc;

23
include/magnifier.h Normal file
View file

@ -0,0 +1,23 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef LABWC_MAGNIFIER_H
#define LABWC_MAGNIFIER_H
#include <stdbool.h>
#include <wayland-server-core.h>
struct server;
struct output;
enum magnify_dir {
MAGNIFY_INCREASE,
MAGNIFY_DECREASE
};
void magnify_toggle(struct server *server);
void magnify_set_scale(struct server *server, enum magnify_dir dir);
bool output_wants_magnification(struct output *output);
void magnify(struct output *output, struct wlr_buffer *output_buffer,
struct wlr_box *damage);
bool is_magnify_on(void);
#endif /* LABWC_MAGNIFIER_H */

4
include/theme.h
View file

@ -139,6 +139,10 @@ struct theme {
/* not set in rc.xml/themerc, but derived from font & padding_height */
int osd_window_switcher_item_height;
/* magnifier */
float mag_border_color[4];
int mag_border_width;
};
struct server;