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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 <wayland-server.h>
#include <wayland-server-protocol.h>
#include <xkbcommon/xkbcommon.h>
#include <GLES3/gl3.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles3.h>
#include <wlr/render.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types.h>
#include <math.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
int cur_x, cur_y;
float default_color[4];
float clear_color[4];
};
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_renderer_begin(sample->renderer, wlr_output);
glClearColor(sample->clear_color[0], sample->clear_color[1],
sample->clear_color[2], sample->clear_color[3]);
glClear(GL_COLOR_BUFFER_BIT);
float matrix[16];
wlr_surface_get_matrix(sample->cat_texture, &matrix,
&wlr_output->transform_matrix, sample->cur_x, sample->cur_y);
wlr_render_with_matrix(sample->renderer,
sample->cat_texture, &matrix);
wlr_renderer_end(sample->renderer);
}
static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) {
if (sym == XKB_KEY_Escape) {
kbstate->compositor->exit = true;
}
}
static void handle_pointer_motion(struct pointer_state *pstate,
double d_x, double d_y) {
struct sample_state *state = pstate->compositor->data;
state->cur_x += d_x;
state->cur_y += d_y;
}
static void handle_pointer_button(struct pointer_state *pstate,
uint32_t button, enum wlr_button_state state) {
struct sample_state *sample = pstate->compositor->data;
float (*color)[4];
if (state == WLR_BUTTON_RELEASED) {
color = &sample->default_color;
} else {
float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
red[button % 3] = 1;
color = &red;
}
memcpy(&sample->clear_color, color, sizeof(*color));
}
static void handle_pointer_axis(struct pointer_state *pstate,
enum wlr_axis_source source,
enum wlr_axis_orientation orientation,
double delta) {
struct sample_state *sample = pstate->compositor->data;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += 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 }
};
struct compositor_state compositor;
compositor_init(&compositor);
compositor.output_frame_cb = handle_output_frame;
compositor.keyboard_key_cb = handle_keyboard_key;
compositor.pointer_motion_cb = handle_pointer_motion;
compositor.pointer_button_cb = handle_pointer_button;
compositor.pointer_axis_cb = handle_pointer_axis;
state.renderer = wlr_gles3_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);
wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
compositor.data = &state;
compositor_run(&compositor);
wlr_surface_destroy(state.cat_texture);
wlr_renderer_destroy(state.renderer);
}
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