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Move example -> examples

Browse source 
And the compositor example into its own directory
This commit is contained in:
Drew DeVault 2017-06-28 18:23:49 -04:00
parent 18e6ddc1c5
commit 28736c5787
12 changed files with 2 additions and 5 deletions
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79
examples/CMakeLists.txt Normal file
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include_directories(
${DRM_INCLUDE_DIRS}
${CMAKE_CURRENT_SOURCE_DIR}
${XKBCOMMON_INCLUDE_DIRS}
)
add_executable(simple
simple.c
shared.c
)
target_link_libraries(simple
wlr-backend
wlr-session
${XKBCOMMON_LIBRARIES}
)
add_executable(rotation
rotation.c
shared.c
cat.c
)
target_link_libraries(rotation
wlr-backend
wlr-session
wlr-render
${XKBCOMMON_LIBRARIES}
)
add_executable(pointer
pointer.c
shared.c
cat.c
)
target_link_libraries(pointer
wlr-backend
wlr-session
wlr-render
${XKBCOMMON_LIBRARIES}
)
add_executable(touch
touch.c
shared.c
cat.c
)
target_link_libraries(touch
wlr-backend
wlr-session
wlr-render
${XKBCOMMON_LIBRARIES}
)
add_executable(tablet
tablet.c
shared.c
)
target_link_libraries(tablet
wlr-backend
wlr-session
wlr-render
${XKBCOMMON_LIBRARIES}
)
add_executable(compositor
compositor/main.c
shared.c
)
target_link_libraries(compositor
wlr-backend
wlr-session
wlr-render
${XKBCOMMON_LIBRARIES}
)

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#ifndef _CAT_H
#define _CAT_H
struct gimp_texture {
unsigned int width;
unsigned int height;
unsigned int bytes_per_pixel; /* 2:RGB16, 3:RGB, 4:RGBA */
unsigned char pixel_data[128 * 128 * 3 + 1];
};
extern const struct gimp_texture cat_tex;
#endif

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#define _POSIX_C_SOURCE 199309L
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <inttypes.h>
#include <wayland-server.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/render.h>
#include <wlr/render/gles2.h>
#include <wlr/types/wlr_output.h>
#include <xkbcommon/xkbcommon.h>
#include "shared.h"
struct sample_state {
struct wlr_renderer *renderer;
};
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);
// TODO: render surfaces
wlr_renderer_end(sample->renderer);
}
int main() {
struct sample_state state = { 0 };
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,
};
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init();
wl_display_init_shm(compositor.display);
compositor_run(&compositor);
}

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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 <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/session.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/util/log.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_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_motion_absolute(struct pointer_state *pstate,
double x, double y) {
struct sample_state *state = pstate->compositor->data;
state->cur_x = x;
state->cur_y = 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));
}
static void handle_output_add(struct output_state *ostate) {
struct wlr_output *wlr_output = ostate->output;
int width = 16, height = 16;
if (!wlr_output_set_cursor(wlr_output, cat_tex.pixel_data,
width * 4, width, 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");
}
}
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 = { 0 };
compositor.data = &state;
compositor.output_add_cb = handle_output_add;
compositor.output_frame_cb = handle_output_frame;
compositor.pointer_motion_cb = handle_pointer_motion;
compositor.pointer_motion_absolute_cb = handle_pointer_motion_absolute;
compositor.pointer_button_cb = handle_pointer_button;
compositor.pointer_axis_cb = handle_pointer_axis;
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);
wlr_surface_attach_pixels(state.cat_texture, GL_RGBA,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
compositor_run(&compositor);
wlr_surface_destroy(state.cat_texture);
wlr_renderer_destroy(state.renderer);
}

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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 <strings.h>
#include <unistd.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/session.h>
#include <wlr/types/wlr_keyboard.h>
#include <math.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct wl_list config;
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
};
struct output_data {
float x_offs, y_offs;
float x_vel, y_vel;
};
struct output_config {
char *name;
enum wl_output_transform transform;
struct wl_list link;
};
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 output_data *odata = output->data;
struct wlr_output *wlr_output = output->output;
int32_t width, height;
wlr_output_effective_resolution(wlr_output, &width, &height);
wlr_renderer_begin(sample->renderer, wlr_output);
float matrix[16];
for (int y = -128 + (int)odata->y_offs; y < height; y += 128) {
for (int x = -128 + (int)odata->x_offs; x < width; x += 128) {
wlr_surface_get_matrix(sample->cat_texture, &matrix,
&wlr_output->transform_matrix, x, y);
wlr_render_with_matrix(sample->renderer,
sample->cat_texture, &matrix);
}
}
wlr_renderer_end(sample->renderer);
long ms = (ts->tv_sec - output->last_frame.tv_sec) * 1000 +
(ts->tv_nsec - output->last_frame.tv_nsec) / 1000000;
float seconds = ms / 1000.0f;
odata->x_offs += odata->x_vel * seconds;
odata->y_offs += odata->y_vel * seconds;
if (odata->x_offs > 128) odata->x_offs = 0;
if (odata->y_offs > 128) odata->y_offs = 0;
}
static void handle_output_add(struct output_state *output) {
struct output_data *odata = calloc(1, sizeof(struct output_data));
odata->x_offs = odata->y_offs = 0;
odata->x_vel = odata->y_vel = 128;
output->data = odata;
struct sample_state *state = output->compositor->data;
struct output_config *conf;
wl_list_for_each(conf, &state->config, link) {
if (strcmp(conf->name, output->output->name) == 0) {
wlr_output_transform(output->output, conf->transform);
break;
}
}
}
static void handle_output_remove(struct output_state *output) {
free(output->data);
}
static void update_velocities(struct compositor_state *state,
float x_diff, float y_diff) {
struct output_state *output;
wl_list_for_each(output, &state->outputs, link) {
struct output_data *odata = output->data;
odata->x_vel += x_diff;
odata->y_vel += y_diff;
}
}
static void handle_keyboard_key(struct keyboard_state *kbstate,
xkb_keysym_t sym, enum wlr_key_state key_state) {
// NOTE: It may be better to simply refer to our key state during each frame
// and make this change in pixels/sec^2
// Also, key repeat
if (key_state == WLR_KEY_PRESSED) {
switch (sym) {
case XKB_KEY_Left:
update_velocities(kbstate->compositor, -16, 0);
break;
case XKB_KEY_Right:
update_velocities(kbstate->compositor, 16, 0);
break;
case XKB_KEY_Up:
update_velocities(kbstate->compositor, 0, -16);
break;
case XKB_KEY_Down:
update_velocities(kbstate->compositor, 0, 16);
break;
}
}
}
static void usage(const char *name, int ret) {
fprintf(stderr,
"usage: %s [-d <name> [-r <rotation> | -f]]*\n"
"\n"
" -o <output> The name of the DRM display. e.g. DVI-I-1.\n"
" -r <rotation> The rotation counter clockwise. Valid values are 90, 180, 270.\n"
" -f Flip the output along the vertical axis.\n", name);
exit(ret);
}
static void parse_args(int argc, char *argv[], struct wl_list *config) {
struct output_config *oc = NULL;
int c;
while ((c = getopt(argc, argv, "o:r:fh")) != -1) {
switch (c) {
case 'o':
oc = calloc(1, sizeof(*oc));
oc->name = optarg;
oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
wl_list_insert(config, &oc->link);
break;
case 'r':
if (!oc) {
fprintf(stderr, "You must specify an output first\n");
usage(argv[0], 1);
}
if (oc->transform != WL_OUTPUT_TRANSFORM_NORMAL
&& oc->transform != WL_OUTPUT_TRANSFORM_FLIPPED) {
fprintf(stderr, "Rotation for %s already specified\n", oc->name);
usage(argv[0], 1);
}
if (strcmp(optarg, "90") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_90;
} else if (strcmp(optarg, "180") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_180;
} else if (strcmp(optarg, "270") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_270;
} else {
fprintf(stderr, "Invalid rotation '%s'\n", optarg);
usage(argv[0], 1);
}
break;
case 'f':
if (!oc) {
fprintf(stderr, "You must specify an output first\n");
usage(argv[0], 1);
}
if (oc->transform >= WL_OUTPUT_TRANSFORM_FLIPPED) {
fprintf(stderr, "Flip for %s already specified\n", oc->name);
usage(argv[0], 1);
}
oc->transform += WL_OUTPUT_TRANSFORM_FLIPPED;
break;
case 'h':
case '?':
usage(argv[0], c != 'h');
}
}
}
int main(int argc, char *argv[]) {
struct sample_state state = { 0 };
wl_list_init(&state.config);
parse_args(argc, argv, &state.config);
struct compositor_state compositor = { 0 };
compositor.data = &state;
compositor.output_add_cb = handle_output_add;
compositor.output_remove_cb = handle_output_remove;
compositor.output_frame_cb = handle_output_frame;
compositor.keyboard_key_cb = handle_keyboard_key;
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);
wlr_surface_attach_pixels(state.cat_texture, WL_SHM_FORMAT_ABGR8888,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
compositor_run(&compositor);
wlr_surface_destroy(state.cat_texture);
wlr_renderer_destroy(state.renderer);
struct output_config *ptr, *tmp;
wl_list_for_each_safe(ptr, tmp, &state.config, link) {
free(ptr);
}
}

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#define _POSIX_C_SOURCE 200112L
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <xkbcommon/xkbcommon.h>
#include <wayland-server-protocol.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/util/log.h>
#include "shared.h"
static void keyboard_led_update(struct keyboard_state *kbstate) {
uint32_t leds = 0;
for (uint32_t i = 0; i < WLR_LED_LAST; ++i) {
if (xkb_state_led_index_is_active(kbstate->xkb_state, kbstate->leds[i])) {
leds |= (1 << i);
}
}
wlr_keyboard_led_update(kbstate->device->keyboard, leds);
}
static void keyboard_key_notify(struct wl_listener *listener, void *data) {
struct wlr_event_keyboard_key *event = data;
struct keyboard_state *kbstate = wl_container_of(listener, kbstate, key);
uint32_t keycode = event->keycode + 8;
enum wlr_key_state key_state = event->state;
const xkb_keysym_t *syms;
int nsyms = xkb_state_key_get_syms(kbstate->xkb_state, keycode, &syms);
for (int i = 0; i < nsyms; ++i) {
xkb_keysym_t sym = syms[i];
char name[64];
int l = xkb_keysym_get_name(sym, name, sizeof(name));
if (l != -1 && l != sizeof(name)) {
wlr_log(L_DEBUG, "Key event: %s %s", name,
key_state == WLR_KEY_PRESSED ? "pressed" : "released");
}
if (kbstate->compositor->keyboard_key_cb) {
kbstate->compositor->keyboard_key_cb(kbstate, sym, key_state);
}
if (sym == XKB_KEY_Escape) {
wl_display_terminate(kbstate->compositor->display);
} else if (key_state == WLR_KEY_PRESSED && sym >= XKB_KEY_F1 && sym <= XKB_KEY_F12) {
wlr_session_change_vt(kbstate->compositor->session, sym - XKB_KEY_F1 + 1);
}
}
xkb_state_update_key(kbstate->xkb_state, keycode,
event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
keyboard_led_update(kbstate);
}
static void keyboard_add(struct wlr_input_device *device, struct compositor_state *state) {
struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
kbstate->device = device;
kbstate->compositor = state;
wl_list_init(&kbstate->key.link);
kbstate->key.notify = keyboard_key_notify;
wl_signal_add(&device->keyboard->events.key, &kbstate->key);
wl_list_insert(&state->keyboards, &kbstate->link);
struct xkb_rule_names rules;
memset(&rules, 0, sizeof(rules));
rules.rules = getenv("XKB_DEFAULT_RULES");
rules.model = getenv("XKB_DEFAULT_MODEL");
rules.layout = getenv("XKB_DEFAULT_LAYOUT");
rules.variant = getenv("XKB_DEFAULT_VARIANT");
rules.options = getenv("XKB_DEFAULT_OPTIONS");
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!context) {
wlr_log(L_ERROR, "Failed to create XKB context");
exit(1);
}
kbstate->keymap = xkb_map_new_from_names(
context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!kbstate->keymap) {
wlr_log(L_ERROR, "Failed to create XKB keymap");
exit(1);
}
xkb_context_unref(context);
kbstate->xkb_state = xkb_state_new(kbstate->keymap);
if (!kbstate->xkb_state) {
wlr_log(L_ERROR, "Failed to create XKB state");
exit(1);
}
const char *led_names[3] = {
XKB_LED_NAME_NUM,
XKB_LED_NAME_CAPS,
XKB_LED_NAME_SCROLL
};
for (uint32_t i = 0; i < 3; ++i) {
kbstate->leds[i] = xkb_map_led_get_index(kbstate->keymap, led_names[i]);
}
}
static void pointer_motion_notify(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_motion *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, motion);
if (pstate->compositor->pointer_motion_cb) {
pstate->compositor->pointer_motion_cb(pstate,
event->delta_x, event->delta_y);
}
}
static void pointer_motion_absolute_notify(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_motion_absolute *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, motion_absolute);
if (pstate->compositor->pointer_motion_absolute_cb) {
pstate->compositor->pointer_motion_absolute_cb(pstate,
event->x_mm, event->y_mm);
}
}
static void pointer_button_notify(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_button *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, button);
if (pstate->compositor->pointer_button_cb) {
pstate->compositor->pointer_button_cb(pstate,
event->button, event->state);
}
}
static void pointer_axis_notify(struct wl_listener *listener, void *data) {
struct wlr_event_pointer_axis *event = data;
struct pointer_state *pstate = wl_container_of(listener, pstate, axis);
if (pstate->compositor->pointer_axis_cb) {
pstate->compositor->pointer_axis_cb(pstate,
event->source, event->orientation, event->delta);
}
}
static void pointer_add(struct wlr_input_device *device, struct compositor_state *state) {
struct pointer_state *pstate = calloc(sizeof(struct pointer_state), 1);
pstate->device = device;
pstate->compositor = state;
wl_list_init(&pstate->motion.link);
wl_list_init(&pstate->motion_absolute.link);
wl_list_init(&pstate->button.link);
wl_list_init(&pstate->axis.link);
pstate->motion.notify = pointer_motion_notify;
pstate->motion_absolute.notify = pointer_motion_absolute_notify;
pstate->button.notify = pointer_button_notify;
pstate->axis.notify = pointer_axis_notify;
wl_signal_add(&device->pointer->events.motion, &pstate->motion);
wl_signal_add(&device->pointer->events.motion_absolute, &pstate->motion_absolute);
wl_signal_add(&device->pointer->events.button, &pstate->button);
wl_signal_add(&device->pointer->events.axis, &pstate->axis);
wl_list_insert(&state->pointers, &pstate->link);
}
static void touch_down_notify(struct wl_listener *listener, void *data) {
struct wlr_event_touch_down *event = data;
struct touch_state *tstate = wl_container_of(listener, tstate, down);
if (tstate->compositor->touch_down_cb) {
tstate->compositor->touch_down_cb(tstate, event->slot,
event->x_mm, event->y_mm, event->width_mm, event->height_mm);
}
}
static void touch_motion_notify(struct wl_listener *listener, void *data) {
struct wlr_event_touch_motion *event = data;
struct touch_state *tstate = wl_container_of(listener, tstate, motion);
if (tstate->compositor->touch_motion_cb) {
tstate->compositor->touch_motion_cb(tstate, event->slot,
event->x_mm, event->y_mm, event->width_mm, event->height_mm);
}
}
static void touch_up_notify(struct wl_listener *listener, void *data) {
struct wlr_event_touch_up *event = data;
struct touch_state *tstate = wl_container_of(listener, tstate, up);
if (tstate->compositor->touch_up_cb) {
tstate->compositor->touch_up_cb(tstate, event->slot);
}
}
static void touch_cancel_notify(struct wl_listener *listener, void *data) {
struct wlr_event_touch_cancel *event = data;
struct touch_state *tstate = wl_container_of(listener, tstate, cancel);
if (tstate->compositor->touch_cancel_cb) {
tstate->compositor->touch_cancel_cb(tstate, event->slot);
}
}
static void touch_add(struct wlr_input_device *device, struct compositor_state *state) {
struct touch_state *tstate = calloc(sizeof(struct touch_state), 1);
tstate->device = device;
tstate->compositor = state;
wl_list_init(&tstate->down.link);
wl_list_init(&tstate->motion.link);
wl_list_init(&tstate->up.link);
wl_list_init(&tstate->cancel.link);
tstate->down.notify = touch_down_notify;
tstate->motion.notify = touch_motion_notify;
tstate->up.notify = touch_up_notify;
tstate->cancel.notify = touch_cancel_notify;
wl_signal_add(&device->touch->events.down, &tstate->down);
wl_signal_add(&device->touch->events.motion, &tstate->motion);
wl_signal_add(&device->touch->events.up, &tstate->up);
wl_signal_add(&device->touch->events.cancel, &tstate->cancel);
wl_list_insert(&state->touch, &tstate->link);
}
static void tablet_tool_axis_notify(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_tool_axis *event = data;
struct tablet_tool_state *tstate = wl_container_of(listener, tstate, axis);
if (tstate->compositor->tool_axis_cb) {
tstate->compositor->tool_axis_cb(tstate, event);
}
}
static void tablet_tool_proximity_notify(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_tool_proximity *event = data;
struct tablet_tool_state *tstate = wl_container_of(listener, tstate, proximity);
if (tstate->compositor->tool_proximity_cb) {
tstate->compositor->tool_proximity_cb(tstate, event->state);
}
}
static void tablet_tool_button_notify(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_tool_button *event = data;
struct tablet_tool_state *tstate = wl_container_of(listener, tstate, button);
if (tstate->compositor->tool_button_cb) {
tstate->compositor->tool_button_cb(tstate, event->button, event->state);
}
}
static void tablet_tool_add(struct wlr_input_device *device,
struct compositor_state *state) {
struct tablet_tool_state *tstate = calloc(sizeof(struct tablet_tool_state), 1);
tstate->device = device;
tstate->compositor = state;
wl_list_init(&tstate->axis.link);
wl_list_init(&tstate->proximity.link);
wl_list_init(&tstate->tip.link);
wl_list_init(&tstate->button.link);
tstate->axis.notify = tablet_tool_axis_notify;
tstate->proximity.notify = tablet_tool_proximity_notify;
//tstate->tip.notify = tablet_tool_tip_notify;
tstate->button.notify = tablet_tool_button_notify;
wl_signal_add(&device->tablet_tool->events.axis, &tstate->axis);
wl_signal_add(&device->tablet_tool->events.proximity, &tstate->proximity);
//wl_signal_add(&device->tablet_tool->events.tip, &tstate->tip);
wl_signal_add(&device->tablet_tool->events.button, &tstate->button);
wl_list_insert(&state->tablet_tools, &tstate->link);
}
static void tablet_pad_button_notify(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_pad_button *event = data;
struct tablet_pad_state *pstate = wl_container_of(listener, pstate, button);
if (pstate->compositor->pad_button_cb) {
pstate->compositor->pad_button_cb(pstate, event->button, event->state);
}
}
static void tablet_pad_add(struct wlr_input_device *device,
struct compositor_state *state) {
struct tablet_pad_state *pstate = calloc(sizeof(struct tablet_pad_state), 1);
pstate->device = device;
pstate->compositor = state;
wl_list_init(&pstate->button.link);
pstate->button.notify = tablet_pad_button_notify;
wl_signal_add(&device->tablet_pad->events.button, &pstate->button);
wl_list_insert(&state->tablet_pads, &pstate->link);
}
static void input_add_notify(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct compositor_state *state = wl_container_of(listener, state, input_add);
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
keyboard_add(device, state);
break;
case WLR_INPUT_DEVICE_POINTER:
pointer_add(device, state);
break;
case WLR_INPUT_DEVICE_TOUCH:
touch_add(device, state);
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:
tablet_tool_add(device, state);
break;
case WLR_INPUT_DEVICE_TABLET_PAD:
tablet_pad_add(device, state);
break;
default:
break;
}
}
static void keyboard_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct keyboard_state *kbstate = NULL, *_kbstate;
wl_list_for_each(_kbstate, &state->keyboards, link) {
if (_kbstate->device == device) {
kbstate = _kbstate;
break;
}
}
if (!kbstate) {
return;
}
wl_list_remove(&kbstate->link);
wl_list_remove(&kbstate->key.link);
}
static void pointer_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct pointer_state *pstate = NULL, *_pstate;
wl_list_for_each(_pstate, &state->pointers, link) {
if (_pstate->device == device) {
pstate = _pstate;
break;
}
}
if (!pstate) {
return;
}
wl_list_remove(&pstate->link);
wl_list_remove(&pstate->motion.link);
wl_list_remove(&pstate->motion_absolute.link);
wl_list_remove(&pstate->button.link);
wl_list_remove(&pstate->axis.link);
}
static void touch_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct touch_state *tstate = NULL, *_tstate;
wl_list_for_each(_tstate, &state->touch, link) {
if (_tstate->device == device) {
tstate = _tstate;
break;
}
}
if (!tstate) {
return;
}
wl_list_remove(&tstate->link);
wl_list_remove(&tstate->down.link);
wl_list_remove(&tstate->motion.link);
wl_list_remove(&tstate->up.link);
wl_list_remove(&tstate->cancel.link);
}
static void tablet_tool_remove(struct wlr_input_device *device, struct compositor_state *state) {
struct tablet_tool_state *tstate = NULL, *_tstate;
wl_list_for_each(_tstate, &state->tablet_tools, link) {
if (_tstate->device == device) {
tstate = _tstate;
break;
}
}
if (!tstate) {
return;
}
wl_list_remove(&tstate->link);
wl_list_remove(&tstate->axis.link);
wl_list_remove(&tstate->proximity.link);
//wl_list_remove(&tstate->tip.link);
wl_list_remove(&tstate->button.link);
}
static void input_remove_notify(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct compositor_state *state = wl_container_of(listener, state, input_add);
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
keyboard_remove(device, state);
break;
case WLR_INPUT_DEVICE_POINTER:
pointer_remove(device, state);
break;
case WLR_INPUT_DEVICE_TOUCH:
touch_remove(device, state);
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:
tablet_tool_remove(device, state);
break;
default:
break;
}
}
static void output_frame_notify(struct wl_listener *listener, void *data) {
struct output_state *output = wl_container_of(listener, output, frame);
struct compositor_state *compositor = output->compositor;
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
if (compositor->output_frame_cb) {
compositor->output_frame_cb(output, &now);
}
output->last_frame = now;
compositor->last_frame = now;
}
static void output_add_notify(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct compositor_state *state = wl_container_of(listener, state, output_add);
wlr_log(L_DEBUG, "Output '%s' added", output->name);
wlr_log(L_DEBUG, "%s %s %"PRId32"mm x %"PRId32"mm", output->make, output->model,
output->phys_width, output->phys_height);
if (output->modes->length > 0) {
wlr_output_set_mode(output, output->modes->items[0]);
}
struct output_state *ostate = calloc(1, sizeof(struct output_state));
clock_gettime(CLOCK_MONOTONIC, &ostate->last_frame);
ostate->output = output;
ostate->compositor = state;
ostate->frame.notify = output_frame_notify;
wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
wl_list_insert(&state->outputs, &ostate->link);
if (state->output_add_cb) {
state->output_add_cb(ostate);
}
}
static void output_remove_notify(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct compositor_state *state = wl_container_of(listener, state, output_remove);
struct output_state *ostate = NULL, *_ostate;
wl_list_for_each(_ostate, &state->outputs, link) {
if (_ostate->output == output) {
ostate = _ostate;
break;
}
}
if (!ostate) {
return; // We are unfamiliar with this output
}
if (state->output_remove_cb) {
state->output_remove_cb(ostate);
}
wl_list_remove(&ostate->link);
wl_list_remove(&ostate->frame.link);
}
void compositor_init(struct compositor_state *state) {
state->display = wl_display_create();
state->event_loop = wl_display_get_event_loop(state->display);
state->session = wlr_session_start(state->display);
if (!state->session
|| !state->display
|| !state->event_loop) {
exit(1);
}
wl_list_init(&state->keyboards);
wl_list_init(&state->pointers);
wl_list_init(&state->touch);
wl_list_init(&state->tablet_tools);
wl_list_init(&state->tablet_pads);
wl_list_init(&state->input_add.link);
state->input_add.notify = input_add_notify;
wl_list_init(&state->input_remove.link);
state->input_remove.notify = input_remove_notify;
wl_list_init(&state->outputs);
wl_list_init(&state->output_add.link);
state->output_add.notify = output_add_notify;
wl_list_init(&state->output_remove.link);
state->output_remove.notify = output_remove_notify;
struct wlr_backend *wlr = wlr_backend_autocreate(
state->display, state->session);
if (!wlr) {
exit(1);
}
wl_signal_add(&wlr->events.input_add, &state->input_add);
wl_signal_add(&wlr->events.input_remove, &state->input_remove);
wl_signal_add(&wlr->events.output_add, &state->output_add);
wl_signal_add(&wlr->events.output_remove, &state->output_remove);
state->backend = wlr;
clock_gettime(CLOCK_MONOTONIC, &state->last_frame);
const char *socket = wl_display_add_socket_auto(state->display);
wlr_log(L_INFO, "Running compositor on wayland display '%s'", socket);
setenv("_WAYLAND_DISPLAY", socket, true);
if (!wlr_backend_init(state->backend)) {
wlr_log(L_ERROR, "Failed to initialize backend");
exit(1);
}
}
void compositor_run(struct compositor_state *state) {
wl_display_run(state->display);
wlr_backend_destroy(state->backend);
wlr_session_finish(state->session);
wl_display_destroy(state->display);
}

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#ifndef _EXAMPLE_SHARED_H
#define _EXAMPLE_SHARED_H
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200112L
#endif
#include <time.h>
#include <stdbool.h>
#include <xkbcommon/xkbcommon.h>
#include <wayland-server-protocol.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_input_device.h>
struct output_state {
struct compositor_state *compositor;
struct wlr_output *output;
struct wl_listener frame;
struct timespec last_frame;
struct wl_list link;
void *data;
};
struct keyboard_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener key;
struct wl_list link;
struct xkb_keymap *keymap;
struct xkb_state *xkb_state;
xkb_led_index_t leds[WLR_LED_LAST];
void *data;
};
struct pointer_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener button;
struct wl_listener axis;
struct wl_list link;
void *data;
};
struct touch_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener down;
struct wl_listener up;
struct wl_listener motion;
struct wl_listener cancel;
struct wl_list link;
void *data;
};
struct tablet_tool_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener axis;
struct wl_listener proximity;
struct wl_listener tip;
struct wl_listener button;
struct wl_list link;
void *data;
};
struct tablet_pad_state {
struct compositor_state *compositor;
struct wlr_input_device *device;
struct wl_listener button;
struct wl_list link;
void *data;
};
struct compositor_state {
void (*output_add_cb)(struct output_state *s);
void (*keyboard_add_cb)(struct keyboard_state *s);
void (*output_frame_cb)(struct output_state *s, struct timespec *ts);
void (*output_remove_cb)(struct output_state *s);
void (*keyboard_remove_cb)(struct keyboard_state *s);
void (*keyboard_key_cb)(struct keyboard_state *s, xkb_keysym_t sym,
enum wlr_key_state key_state);
void (*pointer_motion_cb)(struct pointer_state *s,
double d_x, double d_y);
void (*pointer_motion_absolute_cb)(struct pointer_state *s,
double x, double y);
void (*pointer_button_cb)(struct pointer_state *s,
uint32_t button, enum wlr_button_state state);
void (*pointer_axis_cb)(struct pointer_state *s,
enum wlr_axis_source source,
enum wlr_axis_orientation orientation,
double delta);
void (*touch_down_cb)(struct touch_state *s, int32_t slot,
double x, double y, double width, double height);
void (*touch_motion_cb)(struct touch_state *s, int32_t slot,
double x, double y, double width, double height);
void (*touch_up_cb)(struct touch_state *s, int32_t slot);
void (*touch_cancel_cb)(struct touch_state *s, int32_t slot);
void (*tool_axis_cb)(struct tablet_tool_state *s,
struct wlr_event_tablet_tool_axis *event);
void (*tool_proximity_cb)(struct tablet_tool_state *s,
enum wlr_tablet_tool_proximity_state proximity);
void (*tool_tip_cb)(struct tablet_tool_state *s,
enum wlr_tablet_tool_tip_state state);
void (*tool_button_cb)(struct tablet_tool_state *s,
uint32_t button, enum wlr_button_state state);
void (*pad_button_cb)(struct tablet_pad_state *s,
uint32_t button, enum wlr_button_state state);
struct wl_display *display;
struct wl_event_loop *event_loop;
struct wlr_backend *backend;
struct wlr_session *session;
struct wl_list keyboards;
struct wl_list pointers;
struct wl_list touch;
struct wl_list tablet_tools;
struct wl_list tablet_pads;
struct wl_listener input_add;
struct wl_listener input_remove;
struct timespec last_frame;
struct wl_listener output_add;
struct wl_listener output_remove;
struct wl_list outputs;
void *data;
};
void compositor_init(struct compositor_state *state);
void compositor_run(struct compositor_state *state);
#endif

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#define _POSIX_C_SOURCE 199309L
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <inttypes.h>
#include <wayland-server.h>
#include <GLES2/gl2.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types/wlr_output.h>
#include <xkbcommon/xkbcommon.h>
#include "shared.h"
struct sample_state {
float color[3];
int dec;
};
void handle_output_frame(struct output_state *output, struct timespec *ts) {
struct compositor_state *state = output->compositor;
struct sample_state *sample = state->data;
long ms = (ts->tv_sec - state->last_frame.tv_sec) * 1000 +
(ts->tv_nsec - state->last_frame.tv_nsec) / 1000000;
int inc = (sample->dec + 1) % 3;
sample->color[inc] += ms / 2000.0f;
sample->color[sample->dec] -= ms / 2000.0f;
if (sample->color[sample->dec] < 0.0f) {
sample->color[inc] = 1.0f;
sample->color[sample->dec] = 0.0f;
sample->dec = inc;
}
glClearColor(sample->color[0], sample->color[1], sample->color[2], 1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
int main() {
struct sample_state state = {
.color = { 1.0, 0.0, 0.0 },
.dec = 0,
};
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,
};
compositor_init(&compositor);
compositor_run(&compositor);
}

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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 <GLES2/gl2.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/render.h>
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_tablet_tool.h>
#include <wlr/types/wlr_tablet_pad.h>
#include <math.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct wlr_renderer *renderer;
bool proximity, tap, button;
double distance;
double pressure;
double x_mm, y_mm;
double width_mm, height_mm;
struct wl_list link;
float tool_color[4];
float pad_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;
int32_t width, height;
wlr_output_effective_resolution(wlr_output, &width, &height);
wlr_renderer_begin(sample->renderer, wlr_output);
float matrix[16], view[16];
float distance = 0.8f * (1 - sample->distance);
float tool_color[4] = { distance, distance, distance, 1 };
for (size_t i = 0; sample->button && i < 4; ++i) {
tool_color[i] = sample->tool_color[i];
}
float scale = 4;
float pad_width = sample->width_mm * scale;
float pad_height = sample->height_mm * scale;
float left = width / 2.0f - pad_width / 2.0f;
float top = height / 2.0f - pad_height / 2.0f;
wlr_matrix_translate(&matrix, left, top, 0);
wlr_matrix_scale(&view, pad_width, pad_height, 1);
wlr_matrix_mul(&matrix, &view, &view);
wlr_matrix_mul(&wlr_output->transform_matrix, &view, &matrix);
wlr_render_colored_quad(sample->renderer, &sample->pad_color, &matrix);
if (sample->proximity) {
wlr_matrix_translate(&matrix,
sample->x_mm * scale - 8 * (sample->pressure + 1) + left,
sample->y_mm * scale - 8 * (sample->pressure + 1) + top, 0);
wlr_matrix_scale(&view,
16 * (sample->pressure + 1),
16 * (sample->pressure + 1), 1);
wlr_matrix_mul(&matrix, &view, &view);
wlr_matrix_mul(&wlr_output->transform_matrix, &view, &matrix);
wlr_render_colored_ellipse(sample->renderer, &tool_color, &matrix);
}
wlr_renderer_end(sample->renderer);
}
static void handle_tool_axis(struct tablet_tool_state *tstate,
struct wlr_event_tablet_tool_axis *event) {
struct sample_state *sample = tstate->compositor->data;
sample->width_mm = event->width_mm;
sample->height_mm = event->height_mm;
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X)) {
sample->x_mm = event->x_mm;
}
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
sample->y_mm = event->y_mm;
}
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_DISTANCE)) {
sample->distance = event->distance;
}
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_PRESSURE)) {
sample->pressure = event->pressure;
}
}
static void handle_tool_proximity(struct tablet_tool_state *tstate,
enum wlr_tablet_tool_proximity_state state) {
struct sample_state *sample = tstate->compositor->data;
sample->proximity = state == WLR_TABLET_TOOL_PROXIMITY_IN;
}
static void handle_tool_button(struct tablet_tool_state *tstate,
uint32_t button, enum wlr_button_state state) {
struct sample_state *sample = tstate->compositor->data;
if (state == WLR_BUTTON_RELEASED) {
sample->button = false;
} else {
sample->button = true;
for (size_t i = 0; i < 3; ++i) {
if (button % 3 == i) {
sample->tool_color[i] = 0;
} else {
sample->tool_color[i] = 1;
}
}
}
}
static void handle_pad_button(struct tablet_pad_state *pstate,
uint32_t button, enum wlr_button_state state) {
struct sample_state *sample = pstate->compositor->data;
float default_color[4] = { 0.75, 0.75, 0.75, 1.0 };
if (state == WLR_BUTTON_RELEASED) {
memcpy(sample->pad_color, default_color, sizeof(default_color));
} else {
for (size_t i = 0; i < 3; ++i) {
if (button % 3 == i) {
sample->pad_color[i] = 0;
} else {
sample->pad_color[i] = 1;
}
}
}
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.tool_color = { 1, 1, 1, 1 },
.pad_color = { 0.75, 0.75, 0.75, 1.0 }
};
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,
.tool_axis_cb = handle_tool_axis,
.tool_proximity_cb = handle_tool_proximity,
.tool_button_cb = handle_tool_button,
.pad_button_cb = handle_pad_button,
};
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init();
compositor_run(&compositor);
wlr_renderer_destroy(state.renderer);
}

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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 <stdint.h>
#include <math.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/session.h>
#include <wlr/util/list.h>
#include "shared.h"
#include "cat.h"
struct sample_state {
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
list_t *touch_points;
};
struct touch_point {
int32_t slot;
double x, y;
};
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;
int32_t width, height;
wlr_output_effective_resolution(wlr_output, &width, &height);
wlr_renderer_begin(sample->renderer, wlr_output);
float matrix[16];
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *p = sample->touch_points->items[i];
wlr_surface_get_matrix(sample->cat_texture, &matrix,
&wlr_output->transform_matrix,
(int)(p->x * width) - sample->cat_texture->width / 2,
(int)(p->y * height) - sample->cat_texture->height / 2);
wlr_render_with_matrix(sample->renderer,
sample->cat_texture, &matrix);
}
wlr_renderer_end(sample->renderer);
}
static void handle_touch_down(struct touch_state *tstate, int32_t slot,
double x, double y, double width, double height) {
struct sample_state *sample = tstate->compositor->data;
struct touch_point *point = calloc(1, sizeof(struct touch_state));
point->slot = slot;
point->x = x / width;
point->y = y / height;
list_add(sample->touch_points, point);
}
static void handle_touch_up(struct touch_state *tstate, int32_t slot) {
struct sample_state *sample = tstate->compositor->data;
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *point = sample->touch_points->items[i];
if (point->slot == slot) {
list_del(sample->touch_points, i);
break;
}
}
}
static void handle_touch_motion(struct touch_state *tstate, int32_t slot,
double x, double y, double width, double height) {
struct sample_state *sample = tstate->compositor->data;
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *point = sample->touch_points->items[i];
if (point->slot == slot) {
point->x = x / width;
point->y = y / height;
break;
}
}
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.touch_points = list_create()
};
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,
.touch_down_cb = handle_touch_down,
.touch_up_cb = handle_touch_up,
.touch_motion_cb = handle_touch_motion,
};
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);
wlr_surface_attach_pixels(state.cat_texture, GL_RGBA,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
compositor_run(&compositor);
wlr_surface_destroy(state.cat_texture);
wlr_renderer_destroy(state.renderer);
}