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#define _POSIX_C_SOURCE 199309L
#define _XOPEN_SOURCE 500
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include <assert.h>
#include <wayland-server.h>
#include <wayland-server-protocol.h>
#include <xkbcommon/xkbcommon.h>
#include <GLES2/gl2.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/render.h>
#include <wlr/backend.h>
#include <wlr/backend/session.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/xcursor.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/util/log.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct compositor_state *compositor;
struct example_config *config;
struct wlr_xcursor *xcursor;
struct wlr_cursor *cursor;
double cur_x, cur_y;
float default_color[4];
float clear_color[4];
struct wlr_output_layout *layout;
struct wl_listener cursor_motion;
struct wl_listener cursor_motion_absolute;
struct wl_listener cursor_button;
struct wl_listener cursor_axis;
};
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
struct compositor_state *state = output->compositor;
struct sample_state *sample = state->data;
struct wlr_output *wlr_output = output->output;
wlr_output_make_current(wlr_output);
glClearColor(sample->clear_color[0], sample->clear_color[1],
sample->clear_color[2], sample->clear_color[3]);
glClear(GL_COLOR_BUFFER_BIT);
wlr_output_swap_buffers(wlr_output);
}
static void handle_output_add(struct output_state *ostate) {
struct sample_state *sample = ostate->compositor->data;
struct wlr_output *wlr_output = ostate->output;
struct wlr_xcursor_image *image = sample->xcursor->images[0];
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
if (!wlr_output_set_cursor(wlr_output, image->buffer,
image->width, image->width, image->height)) {
wlr_log(L_DEBUG, "Failed to set hardware cursor");
return;
}
if (!wlr_output_move_cursor(wlr_output, 0, 0)) {
wlr_log(L_DEBUG, "Failed to move hardware cursor");
}
}
static void handle_output_remove(struct output_state *ostate) {
struct sample_state *sample = ostate->compositor->data;
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
}
static void handle_output_resolution(struct compositor_state *state,
struct output_state *ostate) {
struct sample_state *sample = ostate->compositor->data;
wlr_output_layout_destroy(sample->layout);
sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
}
static void handle_input_add(struct compositor_state *state, struct
wlr_input_device *device) {
struct sample_state *sample = state->data;
// TODO handle other input devices
if (device->type == WLR_INPUT_DEVICE_POINTER) {
wlr_cursor_attach_input_device(sample->cursor, device);
}
}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_motion);
struct wlr_event_pointer_motion *event = data;
wlr_cursor_move(sample->cursor, event->delta_x, event->delta_y);
}
static void handle_cursor_motion_absolute(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_motion_absolute);
struct wlr_event_pointer_motion_absolute *event = data;
sample->cur_x = event->x_mm;
sample->cur_y = event->y_mm;
struct wlr_xcursor_image *image = sample->xcursor->images[0];
struct output_state *output;
wl_list_for_each(output, &sample->compositor->outputs, link) {
wlr_output_move_cursor(output->output,
sample->cur_x - image->hotspot_x,
sample->cur_y - image->hotspot_y);
}
}
static void handle_cursor_button(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_button);
struct wlr_event_pointer_button *event = data;
float (*color)[4];
if (event->state == WLR_BUTTON_RELEASED) {
color = &sample->default_color;
memcpy(&sample->clear_color, color, sizeof(*color));
} else {
float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
red[event->button % 3] = 1;
color = &red;
memcpy(&sample->clear_color, color, sizeof(*color));
}
}
static void handle_cursor_axis(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, cursor_axis);
struct wlr_event_pointer_axis *event = data;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += event->delta > 0 ? -0.05f : 0.05f;
if (sample->default_color[i] > 1.0f) {
sample->default_color[i] = 1.0f;
}
if (sample->default_color[i] < 0.0f) {
sample->default_color[i] = 0.0f;
}
}
memcpy(&sample->clear_color, &sample->default_color,
sizeof(sample->clear_color));
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.default_color = { 0.25f, 0.25f, 0.25f, 1 },
.clear_color = { 0.25f, 0.25f, 0.25f, 1 }
};
state.config = parse_args(argc, argv);
state.cursor = wlr_cursor_init();
wl_signal_add(&state.cursor->events.motion, &state.cursor_motion);
state.cursor_motion.notify = handle_cursor_motion;
wl_signal_add(&state.cursor->events.motion_absolute, &state.cursor_motion_absolute);
state.cursor_motion_absolute.notify = handle_cursor_motion_absolute;
wl_signal_add(&state.cursor->events.button, &state.cursor_button);
state.cursor_button.notify = handle_cursor_button;
wl_signal_add(&state.cursor->events.axis, &state.cursor_axis);
state.cursor_axis.notify = handle_cursor_axis;
struct compositor_state compositor = { 0 };
compositor.data = &state;
compositor.output_add_cb = handle_output_add;
compositor.output_remove_cb = handle_output_remove;
compositor.output_resolution_cb = handle_output_resolution;
compositor.output_frame_cb = handle_output_frame;
compositor.input_add_cb = handle_input_add;
state.compositor = &compositor;
struct wlr_xcursor_theme *theme = wlr_xcursor_theme_load("default", 16);
if (!theme) {
wlr_log(L_ERROR, "Failed to load cursor theme");
return 1;
}
state.xcursor = wlr_xcursor_theme_get_cursor(theme, "left_ptr");
if (!state.xcursor) {
wlr_log(L_ERROR, "Failed to load left_ptr cursor");
return 1;
}
wlr_cursor_set_xcursor(state.cursor, state.xcursor);
compositor_init(&compositor);
wl_display_run(compositor.display);
compositor_fini(&compositor);
wlr_xcursor_theme_destroy(theme);
example_config_destroy(state.config);
wlr_cursor_destroy(state.cursor);
}
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