481 lines
14 KiB
C
481 lines
14 KiB
C
#include <wlr/types/wlr_cursor.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <limits.h>
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#include <wlr/util/log.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_output_layout.h>
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#include <wlr/types/wlr_input_device.h>
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struct wlr_cursor_device {
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struct wlr_cursor *cursor;
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struct wlr_input_device *device;
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struct wl_list link;
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struct wlr_output *mapped_output;
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struct wlr_geometry *mapped_geometry;
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struct wl_listener motion;
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struct wl_listener motion_absolute;
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struct wl_listener button;
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struct wl_listener axis;
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struct wl_listener touch_down;
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struct wl_listener touch_up;
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struct wl_listener touch_motion;
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struct wl_listener touch_cancel;
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struct wl_listener tablet_tool_axis;
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struct wl_listener tablet_tool_proximity;
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struct wl_listener tablet_tool_tip;
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struct wl_listener tablet_tool_button;
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struct wl_listener destroy;
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};
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struct wlr_cursor_state {
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struct wl_list devices;
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struct wlr_output_layout *layout;
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struct wlr_xcursor *xcursor;
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struct wlr_output *mapped_output;
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struct wlr_geometry *mapped_geometry;
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};
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struct wlr_cursor *wlr_cursor_init() {
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struct wlr_cursor *cur = calloc(1, sizeof(struct wlr_cursor));
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if (!cur) {
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wlr_log(L_ERROR, "Failed to allocate wlr_cursor");
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return NULL;
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}
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cur->state = calloc(1, sizeof(struct wlr_cursor_state));
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if (!cur->state) {
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wlr_log(L_ERROR, "Failed to allocate wlr_cursor_state");
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free(cur);
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return NULL;
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}
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cur->state->mapped_output = NULL;
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wl_list_init(&cur->state->devices);
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// pointer signals
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wl_signal_init(&cur->events.motion);
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wl_signal_init(&cur->events.motion_absolute);
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wl_signal_init(&cur->events.button);
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wl_signal_init(&cur->events.axis);
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// touch signals
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wl_signal_init(&cur->events.touch_up);
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wl_signal_init(&cur->events.touch_down);
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wl_signal_init(&cur->events.touch_motion);
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wl_signal_init(&cur->events.touch_cancel);
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// tablet tool signals
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wl_signal_init(&cur->events.tablet_tool_tip);
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wl_signal_init(&cur->events.tablet_tool_axis);
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wl_signal_init(&cur->events.tablet_tool_button);
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wl_signal_init(&cur->events.tablet_tool_proximity);
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cur->x = 100;
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cur->y = 100;
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return cur;
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}
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void wlr_cursor_destroy(struct wlr_cursor *cur) {
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struct wlr_cursor_device *device, *device_tmp = NULL;
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wl_list_for_each_safe(device, device_tmp, &cur->state->devices, link) {
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wl_list_remove(&device->link);
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free(device);
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}
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free(cur);
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}
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void wlr_cursor_set_xcursor(struct wlr_cursor *cur, struct wlr_xcursor *xcur) {
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cur->state->xcursor = xcur;
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}
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static struct wlr_cursor_device *get_cursor_device(struct wlr_cursor *cur,
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struct wlr_input_device *device) {
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struct wlr_cursor_device *c_device, *ret = NULL;
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wl_list_for_each(c_device, &cur->state->devices, link) {
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if (c_device->device == device) {
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ret = c_device;
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break;
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}
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}
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return ret;
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}
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static void wlr_cursor_warp_unchecked(struct wlr_cursor *cur,
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double x, double y) {
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assert(cur->state->layout);
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int hotspot_x = 0;
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int hotspot_y = 0;
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if (cur->state->xcursor && cur->state->xcursor->image_count > 0) {
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struct wlr_xcursor_image *image = cur->state->xcursor->images[0];
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hotspot_x = image->hotspot_x;
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hotspot_y = image->hotspot_y;
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}
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struct wlr_output_layout_output *l_output;
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wl_list_for_each(l_output, &cur->state->layout->outputs, link) {
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double output_x = x;
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double output_y = y;
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wlr_output_layout_output_coords(cur->state->layout,
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l_output->output, &output_x, &output_y);
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wlr_output_move_cursor(l_output->output, output_x - hotspot_x,
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output_y - hotspot_y);
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}
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}
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/**
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* Get the most specific mapping box for the device in this order:
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*
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* 1. device geometry mapping
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* 2. device output mapping
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* 3. cursor geometry mapping
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* 4. cursor output mapping
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*
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* Absolute movement for touch and pen devices will be relative to this box and
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* pointer movement will be constrained to this box.
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*
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* If none of these are set, returns NULL and absolute movement should be
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* relative to the extents of the layout.
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*/
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static struct wlr_geometry *get_mapping(struct wlr_cursor *cur,
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struct wlr_input_device *dev) {
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assert(cur->state->layout);
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struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
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if (c_device) {
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if (c_device->mapped_geometry) {
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return c_device->mapped_geometry;
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}
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if (c_device->mapped_output) {
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return wlr_output_layout_get_geometry(cur->state->layout,
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c_device->mapped_output);
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}
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}
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if (cur->state->mapped_geometry) {
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return cur->state->mapped_geometry;
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}
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if (cur->state->mapped_output) {
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return wlr_output_layout_get_geometry(cur->state->layout,
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cur->state->mapped_output);
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}
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return NULL;
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}
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bool wlr_cursor_warp(struct wlr_cursor *cur, struct wlr_input_device *dev,
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double x, double y) {
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assert(cur->state->layout);
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bool result = false;
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struct wlr_geometry *mapping = get_mapping(cur, dev);
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if (mapping) {
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if (wlr_geometry_contains_point(mapping, x, y)) {
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wlr_cursor_warp_unchecked(cur, x, y);
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result = true;
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}
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} else if (wlr_output_layout_contains_point(cur->state->layout, NULL,
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x, y)) {
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wlr_cursor_warp_unchecked(cur, x, y);
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result = true;
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}
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return result;
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}
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void wlr_cursor_warp_absolute(struct wlr_cursor *cur,
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struct wlr_input_device *dev, double x_mm, double y_mm) {
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assert(cur->state->layout);
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struct wlr_geometry *mapping = get_mapping(cur, dev);
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if (!mapping) {
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mapping = wlr_output_layout_get_geometry(cur->state->layout, NULL);
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}
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double x = mapping->width * x_mm + mapping->x;
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double y = mapping->height * y_mm + mapping->y;
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wlr_cursor_warp_unchecked(cur, x, y);
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}
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void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
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double delta_x, double delta_y) {
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assert(cur->state->layout);
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double x = cur->x + delta_x;
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double y = cur->y + delta_y;
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struct wlr_geometry *mapping = get_mapping(cur, dev);
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if (mapping) {
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int boundary_x, boundary_y;
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if (!wlr_geometry_contains_point(mapping, x, y)) {
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wlr_geometry_closest_boundary(mapping, x, y, &boundary_x,
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&boundary_y, NULL);
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x = boundary_x;
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y = boundary_y;
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}
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} else {
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if (!wlr_output_layout_contains_point(cur->state->layout, NULL, x, y)) {
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double boundary_x, boundary_y;
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wlr_output_layout_closest_boundary(cur->state->layout, NULL, x, y,
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&boundary_x, &boundary_y);
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x = boundary_x;
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y = boundary_y;
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}
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}
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wlr_cursor_warp_unchecked(cur, x, y);
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cur->x = x;
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cur->y = y;
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}
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static void handle_pointer_motion(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_motion *event = data;
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struct wlr_cursor_device *device =
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wl_container_of(listener, device, motion);
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wl_signal_emit(&device->cursor->events.motion, event);
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}
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static void handle_pointer_motion_absolute(struct wl_listener *listener,
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void *data) {
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struct wlr_event_pointer_motion_absolute *event = data;
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struct wlr_cursor_device *device =
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wl_container_of(listener, device, motion_absolute);
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wl_signal_emit(&device->cursor->events.motion_absolute, event);
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}
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static void handle_pointer_button(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_button *event = data;
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struct wlr_cursor_device *device =
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wl_container_of(listener, device, button);
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wl_signal_emit(&device->cursor->events.button, event);
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}
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static void handle_pointer_axis(struct wl_listener *listener, void *data) {
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struct wlr_event_pointer_axis *event = data;
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struct wlr_cursor_device *device = wl_container_of(listener, device, axis);
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wl_signal_emit(&device->cursor->events.axis, event);
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}
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static void handle_touch_up(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_up *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, touch_up);
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wl_signal_emit(&device->cursor->events.touch_up, event);
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}
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static void handle_touch_down(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_down *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, touch_down);
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wl_signal_emit(&device->cursor->events.touch_down, event);
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}
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static void handle_touch_motion(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_motion *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, touch_motion);
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wl_signal_emit(&device->cursor->events.touch_motion, event);
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}
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static void handle_touch_cancel(struct wl_listener *listener, void *data) {
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struct wlr_event_touch_cancel *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, touch_cancel);
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wl_signal_emit(&device->cursor->events.touch_cancel, event);
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}
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static void handle_tablet_tool_tip(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_tool_tip *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, tablet_tool_tip);
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wl_signal_emit(&device->cursor->events.tablet_tool_tip, event);
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}
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static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
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struct wlr_event_tablet_tool_axis *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, tablet_tool_axis);
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wl_signal_emit(&device->cursor->events.tablet_tool_axis, event);
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}
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static void handle_tablet_tool_button(struct wl_listener *listener,
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void *data) {
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struct wlr_event_tablet_tool_button *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, tablet_tool_button);
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wl_signal_emit(&device->cursor->events.tablet_tool_button, event);
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}
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static void handle_tablet_tool_proximity(struct wl_listener *listener,
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void *data) {
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struct wlr_event_tablet_tool_proximity *event = data;
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struct wlr_cursor_device *device;
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device = wl_container_of(listener, device, tablet_tool_proximity);
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wl_signal_emit(&device->cursor->events.tablet_tool_proximity, event);
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}
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static void handle_device_destroy(struct wl_listener *listener, void *data) {
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struct wlr_cursor_device *c_device;
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c_device = wl_container_of(listener, c_device, destroy);
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wlr_cursor_detach_input_device(c_device->cursor, c_device->device);
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}
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void wlr_cursor_attach_input_device(struct wlr_cursor *cur,
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struct wlr_input_device *dev) {
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if (dev->type != WLR_INPUT_DEVICE_POINTER &&
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dev->type != WLR_INPUT_DEVICE_TOUCH &&
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dev->type != WLR_INPUT_DEVICE_TABLET_TOOL) {
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wlr_log(L_ERROR, "only device types of pointer, touch or tablet tool"
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"are supported");
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return;
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}
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// make sure it is not already attached
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struct wlr_cursor_device *_dev;
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wl_list_for_each(_dev, &cur->state->devices, link) {
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if (_dev->device == dev) {
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return;
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}
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}
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struct wlr_cursor_device *device;
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device = calloc(1, sizeof(struct wlr_cursor_device));
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if (!device) {
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wlr_log(L_ERROR, "Failed to allocate wlr_cursor_device");
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return;
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}
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device->cursor = cur;
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device->device = dev;
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// listen to events
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wl_signal_add(&dev->events.destroy, &device->destroy);
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device->destroy.notify = handle_device_destroy;
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if (dev->type == WLR_INPUT_DEVICE_POINTER) {
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wl_signal_add(&dev->pointer->events.motion, &device->motion);
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device->motion.notify = handle_pointer_motion;
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wl_signal_add(&dev->pointer->events.motion_absolute,
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&device->motion_absolute);
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device->motion_absolute.notify = handle_pointer_motion_absolute;
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wl_signal_add(&dev->pointer->events.button, &device->button);
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device->button.notify = handle_pointer_button;
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wl_signal_add(&dev->pointer->events.axis, &device->axis);
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device->axis.notify = handle_pointer_axis;
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} else if (dev->type == WLR_INPUT_DEVICE_TOUCH) {
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wl_signal_add(&dev->touch->events.motion, &device->touch_motion);
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device->touch_motion.notify = handle_touch_motion;
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wl_signal_add(&dev->touch->events.down, &device->touch_down);
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device->touch_down.notify = handle_touch_down;
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wl_signal_add(&dev->touch->events.up, &device->touch_up);
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device->touch_up.notify = handle_touch_up;
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wl_signal_add(&dev->touch->events.cancel, &device->touch_cancel);
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device->touch_cancel.notify = handle_touch_cancel;
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} else if (dev->type == WLR_INPUT_DEVICE_TABLET_TOOL) {
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wl_signal_add(&dev->tablet_tool->events.tip, &device->tablet_tool_tip);
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device->tablet_tool_tip.notify = handle_tablet_tool_tip;
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wl_signal_add(&dev->tablet_tool->events.proximity,
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&device->tablet_tool_proximity);
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device->tablet_tool_proximity.notify = handle_tablet_tool_proximity;
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wl_signal_add(&dev->tablet_tool->events.axis,
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&device->tablet_tool_axis);
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device->tablet_tool_axis.notify = handle_tablet_tool_axis;
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wl_signal_add(&dev->tablet_tool->events.button,
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&device->tablet_tool_button);
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device->tablet_tool_button.notify = handle_tablet_tool_button;
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}
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wl_list_insert(&cur->state->devices, &device->link);
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}
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void wlr_cursor_detach_input_device(struct wlr_cursor *cur,
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struct wlr_input_device *dev) {
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struct wlr_cursor_device *target_device = NULL, *_device = NULL;
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wl_list_for_each(_device, &cur->state->devices, link) {
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if (_device->device == dev) {
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target_device = _device;
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break;
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}
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}
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if (target_device) {
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wl_list_remove(&target_device->link);
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free(target_device);
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}
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}
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void wlr_cursor_attach_output_layout(struct wlr_cursor *cur,
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struct wlr_output_layout *l) {
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cur->state->layout = l;
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}
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void wlr_cursor_map_to_output(struct wlr_cursor *cur,
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struct wlr_output *output) {
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cur->state->mapped_output = output;
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}
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void wlr_cursor_map_input_to_output(struct wlr_cursor *cur,
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struct wlr_input_device *dev, struct wlr_output *output) {
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struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
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if (!c_device) {
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wlr_log(L_ERROR, "Cannot map device \"%s\" to output"
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"(not found in this cursor)", dev->name);
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return;
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}
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c_device->mapped_output = output;
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}
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void wlr_cursor_map_to_region(struct wlr_cursor *cur,
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struct wlr_geometry *geo) {
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if (geo && wlr_geometry_empty(geo)) {
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wlr_log(L_ERROR, "cannot map cursor to an empty region");
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return;
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}
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cur->state->mapped_geometry = geo;
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}
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void wlr_cursor_map_input_to_region(struct wlr_cursor *cur,
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struct wlr_input_device *dev, struct wlr_geometry *geo) {
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if (geo && wlr_geometry_empty(geo)) {
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wlr_log(L_ERROR, "cannot map device \"%s\" input to an empty region",
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dev->name);
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return;
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}
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struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
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if (!c_device) {
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wlr_log(L_ERROR, "Cannot map device \"%s\" to geometry (not found in"
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"this cursor)", dev->name);
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return;
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}
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c_device->mapped_geometry = geo;
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}
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