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Merge pull request #3341 from RedSoxFan/mouse-bindings-improved

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Improve mouse button parsing: helpers and bind{code/sym}
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Ian Fan 2019-01-10 10:55:22 +00:00 • committed by GitHub
commit 15ac580b28
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6 changed files with 159 additions and 57 deletions
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65
sway/input/cursor.c
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@ -2,8 +2,10 @@
#include <math.h>
#include <libevdev/libevdev.h>
#include <linux/input-event-codes.h>
#include <errno.h>
#include <float.h>
#include <limits.h>
#include <strings.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_xcursor_manager.h>
#include <wlr/types/wlr_idle.h>
@ -1533,3 +1535,66 @@ void cursor_warp_to_workspace(struct sway_cursor *cursor,
wlr_cursor_warp(cursor->cursor, NULL, x, y);
}
uint32_t get_mouse_bindsym(const char *name, char **error) {
if (strncasecmp(name, "button", strlen("button")) == 0) {
// Map to x11 mouse buttons
int number = name[strlen("button")] - '0';
if (number < 1 || number > 9 || strlen(name) > strlen("button0")) {
*error = strdup("Only buttons 1-9 are supported. For other mouse "
"buttons, use the name of the event code.");
return 0;
}
static const uint32_t buttons[] = {BTN_LEFT, BTN_MIDDLE, BTN_RIGHT,
SWAY_SCROLL_UP, SWAY_SCROLL_DOWN, SWAY_SCROLL_LEFT,
SWAY_SCROLL_RIGHT, BTN_SIDE, BTN_EXTRA};
return buttons[number - 1];
} else if (strncmp(name, "BTN_", strlen("BTN_")) == 0) {
// Get event code from name
int code = libevdev_event_code_from_name(EV_KEY, name);
if (code == -1) {
size_t len = snprintf(NULL, 0, "Unknown event %s", name) + 1;
*error = malloc(len);
if (*error) {
snprintf(*error, len, "Unknown event %s", name);
}
return 0;
}
return code;
}
return 0;
}
uint32_t get_mouse_bindcode(const char *name, char **error) {
// Validate event code
errno = 0;
char *endptr;
int code = strtol(name, &endptr, 10);
if (endptr == name && code <= 0) {
*error = strdup("Button event code must be a positive integer.");
return 0;
} else if (errno == ERANGE) {
*error = strdup("Button event code out of range.");
return 0;
}
const char *event = libevdev_event_code_get_name(EV_KEY, code);
if (!event || strncmp(event, "BTN_", strlen("BTN_")) != 0) {
size_t len = snprintf(NULL, 0, "Event code %d (%s) is not a button",
code, event) + 1;
*error = malloc(len);
if (*error) {
snprintf(*error, len, "Event code %d (%s) is not a button",
code, event);
}
return 0;
}
return code;
}
uint32_t get_mouse_button(const char *name, char **error) {
uint32_t button = get_mouse_bindsym(name, error);
if (!button && !error) {
button = get_mouse_bindcode(name, error);
}
return button;
}