Add pointer example
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a63230e59c
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@ -27,3 +27,16 @@ target_link_libraries(rotation
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wlr-render
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${XKBCOMMON_LIBRARIES}
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)
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add_executable(pointer
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pointer.c
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shared.c
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cat.c
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)
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target_link_libraries(pointer
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wlr-backend
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wlr-session
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wlr-render
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${XKBCOMMON_LIBRARIES}
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)
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@ -0,0 +1,77 @@
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#define _POSIX_C_SOURCE 199309L
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#define _XOPEN_SOURCE 500
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wayland-server-protocol.h>
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#include <xkbcommon/xkbcommon.h>
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#include <GLES3/gl3.h>
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#include <wlr/render/matrix.h>
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#include <wlr/render/gles3.h>
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#include <wlr/render.h>
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#include <wlr/backend.h>
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#include <wlr/session.h>
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#include <wlr/types.h>
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#include <math.h>
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#include "shared.h"
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#include "cat.h"
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struct sample_state {
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struct wlr_renderer *renderer;
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struct wlr_surface *cat_texture;
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int cur_x, cur_y;
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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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wlr_renderer_begin(sample->renderer, wlr_output);
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float matrix[16];
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wlr_surface_get_matrix(sample->cat_texture, &matrix,
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&wlr_output->transform_matrix, sample->cur_x, sample->cur_y);
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wlr_render_with_matrix(sample->renderer,
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sample->cat_texture, &matrix);
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wlr_renderer_end(sample->renderer);
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}
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static void handle_keyboard_key(struct keyboard_state *kbstate,
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xkb_keysym_t sym, enum wlr_key_state key_state) {
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if (sym == XKB_KEY_Escape) {
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kbstate->compositor->exit = true;
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}
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}
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static void handle_pointer_motion(struct pointer_state *pstate,
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double d_x, double d_y) {
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struct sample_state *state = pstate->compositor->data;
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state->cur_x += d_x;
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state->cur_y += d_y;
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}
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int main(int argc, char *argv[]) {
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struct sample_state state = { 0 };
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struct compositor_state compositor;
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compositor_init(&compositor);
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compositor.output_frame_cb = handle_output_frame;
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compositor.pointer_motion_cb = handle_pointer_motion;
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compositor.keyboard_key_cb = handle_keyboard_key;
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state.renderer = wlr_gles3_renderer_init();
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state.cat_texture = wlr_render_surface_init(state.renderer);
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wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
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cat_tex.width, cat_tex.height, cat_tex.pixel_data);
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compositor.data = &state;
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compositor_run(&compositor);
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wlr_surface_destroy(state.cat_texture);
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wlr_renderer_destroy(state.renderer);
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}
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@ -35,12 +35,7 @@ static void keyboard_key_notify(struct wl_listener *listener, void *data) {
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event->state == WLR_KEY_PRESSED ? XKB_KEY_DOWN : XKB_KEY_UP);
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}
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static void input_add_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct compositor_state *state = wl_container_of(listener, state, input_add);
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if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
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return;
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}
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static void keyboard_add(struct wlr_input_device *device, struct compositor_state *state) {
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struct keyboard_state *kbstate = calloc(sizeof(struct keyboard_state), 1);
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kbstate->device = device;
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kbstate->compositor = state;
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@ -75,26 +70,90 @@ static void input_add_notify(struct wl_listener *listener, void *data) {
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}
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}
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static void input_remove_notify(struct wl_listener *listener, void *data) {
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static void pointer_motion_notify(struct wl_listener *listener, void *data) {
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struct wlr_pointer_motion *event = data;
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struct pointer_state *pstate = wl_container_of(listener, pstate, motion);
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if (pstate->compositor->pointer_motion_cb) {
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pstate->compositor->pointer_motion_cb(pstate, event->delta_x, event->delta_y);
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}
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}
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static void pointer_add(struct wlr_input_device *device, struct compositor_state *state) {
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struct pointer_state *pstate = calloc(sizeof(struct pointer_state), 1);
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pstate->device = device;
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pstate->compositor = state;
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wl_list_init(&pstate->motion.link);
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wl_list_init(&pstate->motion_absolute.link);
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wl_list_init(&pstate->button.link);
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wl_list_init(&pstate->axis.link);
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pstate->motion.notify = pointer_motion_notify;
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wl_signal_add(&device->pointer->events.motion, &pstate->motion);
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wl_list_insert(&state->pointers, &pstate->link);
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}
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static void input_add_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct compositor_state *state = wl_container_of(listener, state, input_add);
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if (device->type != WLR_INPUT_DEVICE_KEYBOARD) {
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return;
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switch (device->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:
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keyboard_add(device, state);
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break;
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case WLR_INPUT_DEVICE_POINTER:
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pointer_add(device, state);
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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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static void keyboard_remove(struct wlr_input_device *device, struct compositor_state *state) {
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struct keyboard_state *kbstate = NULL, *_kbstate;
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wl_list_for_each(_kbstate, &state->keyboards, link) {
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if (_kbstate->device == device) {
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kbstate = kbstate;
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kbstate = _kbstate;
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break;
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}
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}
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if (!kbstate) {
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return; // We are unfamiliar with this keyboard
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return;
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}
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wl_list_remove(&kbstate->link);
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wl_list_remove(&kbstate->key.link);
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}
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static void pointer_remove(struct wlr_input_device *device, struct compositor_state *state) {
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struct pointer_state *pstate = NULL, *_pstate;
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wl_list_for_each(_pstate, &state->pointers, link) {
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if (_pstate->device == device) {
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pstate = _pstate;
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break;
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}
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}
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if (!pstate) {
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return;
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}
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wl_list_remove(&pstate->link);
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//wl_list_remove(&pstate->motion.link);
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wl_list_remove(&pstate->motion_absolute.link);
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//wl_list_remove(&pstate->button.link);
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//wl_list_remove(&pstate->axis.link);
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}
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static void input_remove_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct compositor_state *state = wl_container_of(listener, state, input_add);
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switch (device->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:
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keyboard_remove(device, state);
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break;
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case WLR_INPUT_DEVICE_POINTER:
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pointer_remove(device, state);
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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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static void output_frame_notify(struct wl_listener *listener, void *data) {
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struct output_state *output = wl_container_of(listener, output, frame);
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struct compositor_state *compositor = output->compositor;
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@ -162,6 +221,7 @@ void compositor_init(struct compositor_state *state) {
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}
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wl_list_init(&state->keyboards);
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wl_list_init(&state->pointers);
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wl_list_init(&state->input_add.link);
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state->input_add.notify = input_add_notify;
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wl_list_init(&state->input_remove.link);
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@ -28,6 +28,17 @@ struct keyboard_state {
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void *data;
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};
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struct pointer_state {
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struct compositor_state *compositor;
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struct wlr_input_device *device;
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struct wl_listener motion;
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struct wl_listener motion_absolute;
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struct wl_listener button;
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struct wl_listener axis;
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struct wl_list link;
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void *data;
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};
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struct compositor_state {
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void (*output_add_cb)(struct output_state *s);
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void (*keyboard_add_cb)(struct keyboard_state *s);
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@ -36,6 +47,7 @@ struct compositor_state {
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void (*keyboard_remove_cb)(struct keyboard_state *s);
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void (*keyboard_key_cb)(struct keyboard_state *s, xkb_keysym_t sym,
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enum wlr_key_state key_state);
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void (*pointer_motion_cb)(struct pointer_state *s, double d_x, double d_y);
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struct wl_display *display;
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struct wl_event_loop *event_loop;
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struct wlr_session *session;
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struct wl_list keyboards;
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struct wl_list pointers;
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struct wl_listener input_add;
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struct wl_listener input_remove;
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