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407 lines
13 KiB
407 lines
13 KiB
#define _POSIX_C_SOURCE 200112L
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#define _XOPEN_SOURCE 500
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#include <assert.h>
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#include <GLES2/gl2.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <wayland-server-protocol.h>
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#include <wayland-server.h>
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#include <wlr/backend.h>
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#include <wlr/backend/session.h>
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#include <wlr/render/gles2.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_cursor.h>
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#include <wlr/types/wlr_keyboard.h>
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#include <wlr/types/wlr_list.h>
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#include <wlr/types/wlr_matrix.h>
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#include <wlr/types/wlr_output_layout.h>
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#include <wlr/util/log.h>
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#include <wlr/xcursor.h>
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#include <xkbcommon/xkbcommon.h>
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struct sample_state {
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struct wl_display *display;
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struct compositor_state *compositor;
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struct wlr_xcursor *xcursor;
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struct wlr_cursor *cursor;
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double cur_x, cur_y;
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float default_color[4];
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float clear_color[4];
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struct wlr_output_layout *layout;
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struct wl_list devices;
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struct timespec last_frame;
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struct wl_listener new_output;
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struct wl_listener new_input;
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struct wl_listener cursor_motion;
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struct wl_listener cursor_motion_absolute;
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struct wl_listener cursor_button;
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struct wl_listener cursor_axis;
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struct wl_listener touch_motion;
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struct wl_listener touch_up;
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struct wl_listener touch_down;
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struct wl_listener touch_cancel;
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struct wl_list touch_points;
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struct wl_listener tablet_tool_axis;
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struct wl_listener tablet_tool_proxmity;
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struct wl_listener tablet_tool_tip;
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struct wl_listener tablet_tool_button;
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};
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struct touch_point {
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int32_t touch_id;
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double x, y;
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struct wl_list link;
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};
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struct sample_output {
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struct sample_state *sample;
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struct wlr_output *output;
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struct wl_listener frame;
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struct wl_listener destroy;
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};
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struct sample_keyboard {
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struct sample_state *sample;
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struct wlr_input_device *device;
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struct wl_listener key;
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struct wl_listener destroy;
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};
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static void warp_to_touch(struct sample_state *sample,
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struct wlr_input_device *dev) {
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if (wl_list_empty(&sample->touch_points)) {
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return;
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}
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double x = 0, y = 0;
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size_t n = 0;
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struct touch_point *point;
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wl_list_for_each(point, &sample->touch_points, link) {
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x += point->x;
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y += point->y;
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n++;
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}
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x /= n;
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y /= n;
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wlr_cursor_warp_absolute(sample->cursor, dev, x, y);
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}
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void output_frame_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output = wl_container_of(listener, sample_output, frame);
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struct sample_state *sample = sample_output->sample;
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struct wlr_output *wlr_output = sample_output->output;
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wlr_output_make_current(wlr_output, NULL);
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glClearColor(sample->clear_color[0], sample->clear_color[1],
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sample->clear_color[2], sample->clear_color[3]);
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glClear(GL_COLOR_BUFFER_BIT);
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wlr_output_swap_buffers(wlr_output, NULL, NULL);
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}
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static void handle_cursor_motion(struct wl_listener *listener, void *data) {
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struct sample_state *sample =
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wl_container_of(listener, sample, cursor_motion);
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struct wlr_event_pointer_motion *event = data;
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wlr_cursor_move(sample->cursor, event->device, event->delta_x,
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event->delta_y);
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}
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static void handle_cursor_motion_absolute(struct wl_listener *listener,
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void *data) {
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struct sample_state *sample =
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wl_container_of(listener, sample, cursor_motion_absolute);
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struct wlr_event_pointer_motion_absolute *event = data;
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sample->cur_x = event->x;
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sample->cur_y = event->y;
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wlr_cursor_warp_absolute(sample->cursor, event->device, sample->cur_x,
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sample->cur_y);
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}
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static void handle_cursor_button(struct wl_listener *listener, void *data) {
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struct sample_state *sample =
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wl_container_of(listener, sample, cursor_button);
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struct wlr_event_pointer_button *event = data;
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float (*color)[4];
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if (event->state == WLR_BUTTON_RELEASED) {
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color = &sample->default_color;
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memcpy(&sample->clear_color, color, sizeof(*color));
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} else {
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float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
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red[event->button % 3] = 1;
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color = &red;
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memcpy(&sample->clear_color, color, sizeof(*color));
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}
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}
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static void handle_cursor_axis(struct wl_listener *listener, void *data) {
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struct sample_state *sample =
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wl_container_of(listener, sample, cursor_axis);
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struct wlr_event_pointer_axis *event = data;
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for (size_t i = 0; i < 3; ++i) {
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sample->default_color[i] += event->delta > 0 ? -0.05f : 0.05f;
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if (sample->default_color[i] > 1.0f) {
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sample->default_color[i] = 1.0f;
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}
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if (sample->default_color[i] < 0.0f) {
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sample->default_color[i] = 0.0f;
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}
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}
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memcpy(&sample->clear_color, &sample->default_color,
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sizeof(sample->clear_color));
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}
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static void handle_touch_up(struct wl_listener *listener, void *data) {
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struct sample_state *sample = wl_container_of(listener, sample, touch_up);
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struct wlr_event_touch_up *event = data;
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struct touch_point *point, *tmp;
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wl_list_for_each_safe(point, tmp, &sample->touch_points, link) {
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if (point->touch_id == event->touch_id) {
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wl_list_remove(&point->link);
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break;
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}
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}
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warp_to_touch(sample, event->device);
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}
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static void handle_touch_down(struct wl_listener *listener, void *data) {
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struct sample_state *sample = wl_container_of(listener, sample, touch_down);
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struct wlr_event_touch_down *event = data;
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struct touch_point *point = calloc(1, sizeof(struct touch_point));
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point->touch_id = event->touch_id;
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point->x = event->x;
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point->y = event->y;
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wl_list_insert(&sample->touch_points, &point->link);
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warp_to_touch(sample, event->device);
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}
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static void handle_touch_motion(struct wl_listener *listener, void *data) {
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struct sample_state *sample =
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wl_container_of(listener, sample, touch_motion);
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struct wlr_event_touch_motion *event = data;
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struct touch_point *point;
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wl_list_for_each(point, &sample->touch_points, link) {
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if (point->touch_id == event->touch_id) {
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point->x = event->x;
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point->y = event->y;
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break;
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}
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}
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warp_to_touch(sample, event->device);
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}
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static void handle_touch_cancel(struct wl_listener *listener, void *data) {
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wlr_log(L_DEBUG, "TODO: touch cancel");
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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 sample_state *sample =
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wl_container_of(listener, sample, tablet_tool_axis);
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struct wlr_event_tablet_tool_axis *event = data;
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if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
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(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
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wlr_cursor_warp_absolute(sample->cursor,
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event->device, event->x, event->y);
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}
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}
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void keyboard_key_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, key);
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struct sample_state *sample = keyboard->sample;
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struct wlr_event_keyboard_key *event = data;
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uint32_t keycode = event->keycode + 8;
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const xkb_keysym_t *syms;
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int nsyms = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
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keycode, &syms);
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for (int i = 0; i < nsyms; i++) {
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xkb_keysym_t sym = syms[i];
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if (sym == XKB_KEY_Escape) {
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wl_display_terminate(sample->display);
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}
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}
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}
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void output_remove_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy);
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struct sample_state *sample = sample_output->sample;
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wlr_output_layout_remove(sample->layout, sample_output->output);
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wl_list_remove(&sample_output->frame.link);
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wl_list_remove(&sample_output->destroy.link);
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free(sample_output);
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}
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void new_output_notify(struct wl_listener *listener, void *data) {
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struct wlr_output *output = data;
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struct sample_state *sample = wl_container_of(listener, sample, new_output);
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struct sample_output *sample_output = calloc(1, sizeof(struct sample_output));
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if (wl_list_length(&output->modes) > 0) {
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struct wlr_output_mode *mode = wl_container_of((&output->modes)->prev, mode, link);
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wlr_output_set_mode(output, mode);
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}
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sample_output->output = output;
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sample_output->sample = sample;
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wl_signal_add(&output->events.frame, &sample_output->frame);
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sample_output->frame.notify = output_frame_notify;
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wl_signal_add(&output->events.destroy, &sample_output->destroy);
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sample_output->destroy.notify = output_remove_notify;
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wlr_output_layout_add_auto(sample->layout, sample_output->output);
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struct wlr_xcursor_image *image = sample->xcursor->images[0];
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wlr_cursor_set_image(sample->cursor, image->buffer, image->width * 4,
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image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
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}
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void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy);
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wl_list_remove(&keyboard->destroy.link);
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wl_list_remove(&keyboard->key.link);
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free(keyboard);
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}
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void new_input_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct sample_state *sample = wl_container_of(listener, sample, new_input);
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switch (device->type) {
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case WLR_INPUT_DEVICE_POINTER:
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case WLR_INPUT_DEVICE_TOUCH:
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case WLR_INPUT_DEVICE_TABLET_TOOL:
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wlr_cursor_attach_input_device(sample->cursor, device);
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break;
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case WLR_INPUT_DEVICE_KEYBOARD:;
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struct sample_keyboard *keyboard = calloc(1, sizeof(struct sample_keyboard));
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keyboard->device = device;
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keyboard->sample = sample;
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wl_signal_add(&device->events.destroy, &keyboard->destroy);
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keyboard->destroy.notify = keyboard_destroy_notify;
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wl_signal_add(&device->keyboard->events.key, &keyboard->key);
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keyboard->key.notify = keyboard_key_notify;
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struct xkb_rule_names rules = { 0 };
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rules.rules = getenv("XKB_DEFAULT_RULES");
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rules.model = getenv("XKB_DEFAULT_MODEL");
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rules.layout = getenv("XKB_DEFAULT_LAYOUT");
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rules.variant = getenv("XKB_DEFAULT_VARIANT");
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rules.options = getenv("XKB_DEFAULT_OPTIONS");
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struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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if (!context) {
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wlr_log(L_ERROR, "Failed to create XKB context");
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exit(1);
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}
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wlr_keyboard_set_keymap(device->keyboard, xkb_map_new_from_names(context,
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&rules, XKB_KEYMAP_COMPILE_NO_FLAGS));
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xkb_context_unref(context);
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break;
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default:
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break;
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}
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}
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int main(int argc, char *argv[]) {
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wlr_log_init(L_DEBUG, NULL);
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struct wl_display *display = wl_display_create();
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struct sample_state state = {
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.default_color = { 0.25f, 0.25f, 0.25f, 1 },
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.clear_color = { 0.25f, 0.25f, 0.25f, 1 },
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.display = display
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};
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struct wlr_backend *wlr = wlr_backend_autocreate(display);
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if (!wlr) {
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exit(1);
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}
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state.cursor = wlr_cursor_create();
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state.layout = wlr_output_layout_create();
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wlr_cursor_attach_output_layout(state.cursor, state.layout);
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//wlr_cursor_map_to_region(state.cursor, state.config->cursor.mapped_box);
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wl_list_init(&state.devices);
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wl_list_init(&state.touch_points);
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// pointer events
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wl_signal_add(&state.cursor->events.motion, &state.cursor_motion);
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state.cursor_motion.notify = handle_cursor_motion;
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wl_signal_add(&state.cursor->events.motion_absolute,
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&state.cursor_motion_absolute);
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state.cursor_motion_absolute.notify = handle_cursor_motion_absolute;
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wl_signal_add(&state.cursor->events.button, &state.cursor_button);
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state.cursor_button.notify = handle_cursor_button;
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wl_signal_add(&state.cursor->events.axis, &state.cursor_axis);
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state.cursor_axis.notify = handle_cursor_axis;
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// touch events
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wl_signal_add(&state.cursor->events.touch_up, &state.touch_up);
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state.touch_up.notify = handle_touch_up;
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wl_signal_add(&state.cursor->events.touch_down, &state.touch_down);
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state.touch_down.notify = handle_touch_down;
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wl_signal_add(&state.cursor->events.touch_motion, &state.touch_motion);
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state.touch_motion.notify = handle_touch_motion;
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wl_signal_add(&state.cursor->events.touch_cancel, &state.touch_cancel);
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state.touch_cancel.notify = handle_touch_cancel;
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wl_signal_add(&wlr->events.new_input, &state.new_input);
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state.new_input.notify = new_input_notify;
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wl_signal_add(&wlr->events.new_output, &state.new_output);
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state.new_output.notify = new_output_notify;
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// tool events
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wl_signal_add(&state.cursor->events.tablet_tool_axis,
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&state.tablet_tool_axis);
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state.tablet_tool_axis.notify = handle_tablet_tool_axis;
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struct wlr_xcursor_theme *theme = wlr_xcursor_theme_load("default", 16);
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if (!theme) {
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wlr_log(L_ERROR, "Failed to load cursor theme");
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return 1;
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}
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state.xcursor = wlr_xcursor_theme_get_cursor(theme, "left_ptr");
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if (!state.xcursor) {
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wlr_log(L_ERROR, "Failed to load left_ptr cursor");
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return 1;
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}
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struct wlr_xcursor_image *image = state.xcursor->images[0];
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wlr_cursor_set_image(state.cursor, image->buffer, image->width * 4,
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image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
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clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
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if (!wlr_backend_start(wlr)) {
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wlr_log(L_ERROR, "Failed to start backend");
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wlr_backend_destroy(wlr);
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exit(1);
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}
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wl_display_run(display);
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wl_display_destroy(display);
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wlr_xcursor_theme_destroy(theme);
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wlr_cursor_destroy(state.cursor);
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wlr_output_layout_destroy(state.layout);
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}
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