132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
#define _POSIX_C_SOURCE 199309L
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#define _XOPEN_SOURCE 500
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#include <GLES2/gl2.h>
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#include <math.h>
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#include <stdint.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_list.h>
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#include <wlr/types/wlr_matrix.h>
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#include <wlr/util/log.h>
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#include <xkbcommon/xkbcommon.h>
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#include "support/cat.h"
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#include "support/shared.h"
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struct sample_state {
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struct wlr_renderer *renderer;
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struct wlr_texture *cat_texture;
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struct wl_list touch_points;
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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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static void handle_output_frame(struct output_state *output, struct timespec *ts) {
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struct compositor_state *state = output->compositor;
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struct sample_state *sample = state->data;
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struct wlr_output *wlr_output = output->output;
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int32_t width, height;
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wlr_output_effective_resolution(wlr_output, &width, &height);
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wlr_output_make_current(wlr_output, NULL);
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wlr_renderer_begin(sample->renderer, wlr_output->width, wlr_output->height);
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wlr_renderer_clear(sample->renderer, (float[]){0.25f, 0.25f, 0.25f, 1});
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struct touch_point *p;
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wl_list_for_each(p, &sample->touch_points, link) {
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int x = (int)(p->x * width) - sample->cat_texture->width / 2;
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int y = (int)(p->y * height) - sample->cat_texture->height / 2;
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wlr_render_texture(sample->renderer, sample->cat_texture,
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wlr_output->transform_matrix, x, y, 1.0f);
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}
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wlr_renderer_end(sample->renderer);
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wlr_output_swap_buffers(wlr_output, NULL, NULL);
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}
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static void handle_touch_down(struct touch_state *tstate, int32_t touch_id,
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double x, double y, double width, double height) {
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struct sample_state *sample = tstate->compositor->data;
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struct touch_point *point = calloc(1, sizeof(struct touch_point));
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point->touch_id = touch_id;
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point->x = x / width;
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point->y = y / height;
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wl_list_insert(&sample->touch_points, &point->link);
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}
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static void handle_touch_up(struct touch_state *tstate, int32_t touch_id) {
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struct sample_state *sample = tstate->compositor->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 == 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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}
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static void handle_touch_motion(struct touch_state *tstate, int32_t touch_id,
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double x, double y, double width, double height) {
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struct sample_state *sample = tstate->compositor->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 == touch_id) {
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point->x = x / width;
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point->y = y / height;
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break;
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}
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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 sample_state state;
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wl_list_init(&state.touch_points);
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struct compositor_state compositor = { 0,
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.data = &state,
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.output_frame_cb = handle_output_frame,
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.touch_down_cb = handle_touch_down,
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.touch_up_cb = handle_touch_up,
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.touch_motion_cb = handle_touch_motion,
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};
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compositor_init(&compositor);
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state.renderer = wlr_gles2_renderer_create(compositor.backend);
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if (!state.renderer) {
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wlr_log(L_ERROR, "Could not start compositor, OOM");
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exit(EXIT_FAILURE);
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}
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state.cat_texture = wlr_render_texture_create(state.renderer);
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if (!state.cat_texture) {
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wlr_log(L_ERROR, "Could not start compositor, OOM");
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exit(EXIT_FAILURE);
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}
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wlr_texture_upload_pixels(state.cat_texture, WL_SHM_FORMAT_ARGB8888,
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cat_tex.width, cat_tex.width, cat_tex.height, cat_tex.pixel_data);
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if (!wlr_backend_start(compositor.backend)) {
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wlr_log(L_ERROR, "Failed to start backend");
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wlr_backend_destroy(compositor.backend);
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exit(1);
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}
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wl_display_run(compositor.display);
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wlr_texture_destroy(state.cat_texture);
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wlr_renderer_destroy(state.renderer);
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compositor_fini(&compositor);
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}
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