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@ -20,6 +20,7 @@
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#include "sway/input/cursor.h"
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#include "sway/input/input-manager.h"
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#include "sway/input/keyboard.h"
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#include "sway/input/libinput.h"
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#include "sway/input/seat.h"
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#include "sway/input/switch.h"
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#include "sway/input/tablet.h"
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@ -666,6 +667,40 @@ static void seat_reset_input_config(struct sway_seat *seat,
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sway_device->input_device->wlr_device, NULL);
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}
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static bool has_prefix(const char *str, const char *prefix) {
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return strncmp(str, prefix, strlen(prefix)) == 0;
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}
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/**
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* Get the name of the built-in output, if any. Returns NULL if there isn't
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* exactly one built-in output.
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*/
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static const char *get_builtin_output_name(void) {
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const char *match = NULL;
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for (int i = 0; i < root->outputs->length; ++i) {
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struct sway_output *output = root->outputs->items[i];
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const char *name = output->wlr_output->name;
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if (has_prefix(name, "eDP-") || has_prefix(name, "LVDS-") ||
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has_prefix(name, "DSI-")) {
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if (match != NULL) {
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return NULL;
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}
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match = name;
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}
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}
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return match;
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}
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static bool is_touch_or_tablet_tool(struct sway_seat_device *seat_device) {
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switch (seat_device->input_device->wlr_device->type) {
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case WLR_INPUT_DEVICE_TOUCH:
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case WLR_INPUT_DEVICE_TABLET_TOOL:
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return true;
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default:
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return false;
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}
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}
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static void seat_apply_input_config(struct sway_seat *seat,
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struct sway_seat_device *sway_device) {
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struct input_config *ic =
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@ -681,7 +716,21 @@ static void seat_apply_input_config(struct sway_seat *seat,
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switch (mapped_to) {
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case MAPPED_TO_DEFAULT:
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/*
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* If the wlroots backend provides an output name, use that.
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*
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* Otherwise, try to map built-in touch and tablet tool devices to the
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* built-in output.
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*/
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mapped_to_output = sway_device->input_device->wlr_device->output_name;
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if (mapped_to_output == NULL && is_touch_or_tablet_tool(sway_device) &&
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sway_libinput_device_is_builtin(sway_device->input_device)) {
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mapped_to_output = get_builtin_output_name();
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if (mapped_to_output) {
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sway_log(SWAY_DEBUG, "Auto-detected output '%s' for device '%s'",
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mapped_to_output, sway_device->input_device->identifier);
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}
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}
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if (mapped_to_output == NULL) {
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return;
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}
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