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backend/libinput: use wl_array for wlr_libinput_tablet.tools 

Instead of using a single-field wl_list, let's just use a wl_array.
This commit is contained in:
Simon Ser 2021-07-01 10:28:02 +02:00
parent a38baec1f8
commit 0a522cb798
1 changed files with 19 additions and 33 deletions
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52
backend/libinput/tablet_tool.c
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@ -11,6 +11,7 @@
#include <wlr/types/wlr_input_device.h>
#include <wlr/util/log.h>
#include "backend/libinput.h"
#include "util/array.h"
#include "util/signal.h"
static const struct wlr_tablet_impl tablet_impl;
@ -29,18 +30,9 @@ struct wlr_libinput_tablet_tool {
size_t pad_refs;
};
// TODO: Maybe this should be a wlr_list? Do we keep it, or want to get rid of
// it?
struct tablet_tool_list_elem {
struct wl_list link;
struct wlr_libinput_tablet_tool *tool;
};
struct wlr_libinput_tablet {
struct wlr_tablet wlr_tablet;
struct wl_list tools; // tablet_tool_list_elem::link
struct wl_array tools; // struct wlr_libinput_tablet_tool *
};
static void destroy_tool(struct wlr_libinput_tablet_tool *tool) {
@ -56,17 +48,13 @@ static void destroy_tablet(struct wlr_tablet *wlr_tablet) {
struct wlr_libinput_tablet *tablet =
wl_container_of(wlr_tablet, tablet, wlr_tablet);
struct tablet_tool_list_elem *pos;
struct tablet_tool_list_elem *tmp;
wl_list_for_each_safe(pos, tmp, &tablet->tools, link) {
struct wlr_libinput_tablet_tool *tool = pos->tool;
wl_list_remove(&pos->link);
free(pos);
struct wlr_libinput_tablet_tool *tool;
wl_array_for_each(tool, &tablet->tools) {
if (--tool->pad_refs == 0) {
destroy_tool(tool);
}
}
wl_array_release(&tablet->tools);
free(tablet);
}
@ -94,7 +82,7 @@ struct wlr_tablet *create_libinput_tablet(
wlr_tablet->name = strdup(libinput_device_get_name(libinput_dev));
wl_list_init(&libinput_tablet->tools);
wl_array_init(&libinput_tablet->tools);
return wlr_tablet;
}
@ -163,9 +151,9 @@ static void ensure_tool_reference(struct wlr_libinput_tablet_tool *tool,
struct wlr_libinput_tablet *tablet =
wl_container_of(wlr_dev, tablet, wlr_tablet);
struct tablet_tool_list_elem *pos;
wl_list_for_each(pos, &tablet->tools, link) {
if (pos->tool == tool) { // We already have a ref
struct wlr_libinput_tablet_tool *iter;
wl_array_for_each(iter, &tablet->tools) {
if (iter == tool) { // We already have a ref
// XXX: We *could* optimize the tool to the front of
// the list here, since we will probably get the next
// couple of events from the same tool.
@ -176,15 +164,13 @@ static void ensure_tool_reference(struct wlr_libinput_tablet_tool *tool,
}
}
struct tablet_tool_list_elem *new =
calloc(1, sizeof(struct tablet_tool_list_elem));
if (!new) {
struct wlr_libinput_tablet_tool **dst =
wl_array_add(&tablet->tools, sizeof(tool));
if (!dst) {
wlr_log(WLR_ERROR, "Failed to allocate memory for tracking tablet tool");
return;
}
new->tool = tool;
wl_list_insert(&tablet->tools, &new->link);
*dst = tool;
++tool->pad_refs;
}
@ -297,15 +283,15 @@ void handle_tablet_tool_proximity(struct libinput_event *event,
assert(tablet_is_libinput(wlr_dev->tablet));
struct wlr_libinput_tablet *tablet =
wl_container_of(wlr_dev->tablet, tablet, wlr_tablet);
struct tablet_tool_list_elem *pos;
struct tablet_tool_list_elem *tmp;
wl_list_for_each_safe(pos, tmp, &tablet->tools, link) {
if (pos->tool == tool) {
wl_list_remove(&pos->link);
free(pos);
size_t i = 0;
struct wlr_libinput_tablet_tool *iter;
wl_array_for_each(iter, &tablet->tools) {
if (iter == tool) {
array_remove_at(&tablet->tools, i * sizeof(tool), sizeof(tool));
break;
}
i++;
}
destroy_tool(tool);