wlroots/examples/toplevel-decoration.c

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2018-06-10 10:15:26 +00:00
#include <GLES2/gl2.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wayland-client.h>
#include <wayland-egl.h>
#include <wlr/render/egl.h>
#include "xdg-shell-client-protocol.h"
#include "xdg-decoration-unstable-v1-client-protocol.h"
/**
* Usage: toplevel-decoration [mode]
* Creates an xdg-toplevel supporting decoration negotiation. If `mode` is
* specified, the client will prefer this decoration mode.
*/
static int width = 500, height = 300;
static struct wl_compositor *compositor = NULL;
static struct xdg_wm_base *wm_base = NULL;
static struct zxdg_decoration_manager_v1 *decoration_manager = NULL;
struct wlr_egl egl;
struct wl_egl_window *egl_window;
struct wlr_egl_surface *egl_surface;
struct zxdg_toplevel_decoration_v1 *decoration;
enum zxdg_toplevel_decoration_v1_mode client_preferred_mode, current_mode;
static const char *get_mode_name(enum zxdg_toplevel_decoration_v1_mode mode) {
switch (mode) {
case ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE:
return "client-side decorations";
case ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE:
return "server-side decorations";
}
abort();
}
static void request_preferred_mode(void) {
enum zxdg_toplevel_decoration_v1_mode mode = client_preferred_mode;
if (mode == 0) {
printf("Requesting compositor preferred mode\n");
zxdg_toplevel_decoration_v1_unset_mode(decoration);
return;
}
if (mode == current_mode) {
return;
}
printf("Requesting %s\n", get_mode_name(mode));
zxdg_toplevel_decoration_v1_set_mode(decoration, mode);
}
static void draw(void) {
eglMakeCurrent(egl.display, egl_surface, egl_surface, egl.context);
float color[] = {1.0, 1.0, 0.0, 1.0};
if (current_mode == ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE) {
color[0] = 0.0;
}
glViewport(0, 0, width, height);
glClearColor(color[0], color[1], color[2], 1.0);
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(egl.display, egl_surface);
}
static void xdg_surface_handle_configure(void *data,
struct xdg_surface *xdg_surface, uint32_t serial) {
xdg_surface_ack_configure(xdg_surface, serial);
wl_egl_window_resize(egl_window, width, height, 0, 0);
draw();
}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = xdg_surface_handle_configure,
};
static void xdg_toplevel_handle_configure(void *data,
struct xdg_toplevel *xdg_toplevel, int32_t w, int32_t h,
struct wl_array *states) {
width = w;
height = h;
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.configure = xdg_toplevel_handle_configure,
};
static void decoration_handle_configure(void *data,
struct zxdg_toplevel_decoration_v1 *decoration,
enum zxdg_toplevel_decoration_v1_mode mode) {
printf("Using %s\n", get_mode_name(mode));
current_mode = mode;
}
static const struct zxdg_toplevel_decoration_v1_listener decoration_listener = {
.configure = decoration_handle_configure,
};
static void pointer_handle_enter(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t sx, wl_fixed_t sy) {
// No-op
}
static void pointer_handle_leave(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface) {
// No-op
}
static void pointer_handle_motion(void *data, struct wl_pointer *pointer,
uint32_t time, wl_fixed_t sx, wl_fixed_t sy) {
// No-op
}
static void pointer_handle_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button,
enum wl_pointer_button_state state) {
if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
// Toggle mode
if (client_preferred_mode == ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE) {
client_preferred_mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
} else {
client_preferred_mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
}
request_preferred_mode();
}
}
static void pointer_handle_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, enum wl_pointer_axis axis, wl_fixed_t value) {
// No-op
}
static const struct wl_pointer_listener pointer_listener = {
.enter = pointer_handle_enter,
.leave = pointer_handle_leave,
.motion = pointer_handle_motion,
.button = pointer_handle_button,
.axis = pointer_handle_axis,
};
static void seat_handle_capabilities(void *data, struct wl_seat *seat,
enum wl_seat_capability caps) {
if (caps & WL_SEAT_CAPABILITY_POINTER) {
struct wl_pointer *pointer = wl_seat_get_pointer(seat);
wl_pointer_add_listener(pointer, &pointer_listener, NULL);
}
}
static const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
if (strcmp(interface, wl_compositor_interface.name) == 0) {
compositor = wl_registry_bind(registry, name, &wl_compositor_interface,
1);
} else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
wm_base = wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
} else if (strcmp(interface, zxdg_decoration_manager_v1_interface.name) == 0) {
decoration_manager = wl_registry_bind(registry, name,
&zxdg_decoration_manager_v1_interface, 1);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
struct wl_seat *seat =
wl_registry_bind(registry, name, &wl_seat_interface, 1);
wl_seat_add_listener(seat, &seat_listener, NULL);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
// Who cares?
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
int main(int argc, char **argv) {
if (argc == 2) {
char *mode = argv[1];
if (strcmp(mode, "client") == 0) {
client_preferred_mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
} else if (strcmp(mode, "server") == 0) {
client_preferred_mode = ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
} else {
fprintf(stderr, "Invalid decoration mode\n");
return EXIT_FAILURE;
}
}
struct wl_display *display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "Failed to create display\n");
return EXIT_FAILURE;
}
struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener, NULL);
wl_display_roundtrip(display);
if (compositor == NULL) {
fprintf(stderr, "wl-compositor not available\n");
return EXIT_FAILURE;
}
if (wm_base == NULL) {
fprintf(stderr, "xdg-shell not available\n");
return EXIT_FAILURE;
}
if (decoration_manager == NULL) {
fprintf(stderr, "xdg-decoration not available\n");
return EXIT_FAILURE;
}
EGLint attribs[] = { EGL_NONE };
wlr_egl_init(&egl, EGL_PLATFORM_WAYLAND_EXT, display, attribs);
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struct wl_surface *surface = wl_compositor_create_surface(compositor);
struct xdg_surface *xdg_surface =
xdg_wm_base_get_xdg_surface(wm_base, surface);
struct xdg_toplevel *xdg_toplevel = xdg_surface_get_toplevel(xdg_surface);
decoration = zxdg_decoration_manager_v1_get_toplevel_decoration(
decoration_manager, xdg_toplevel);
wl_display_roundtrip(display);
request_preferred_mode();
xdg_surface_add_listener(xdg_surface, &xdg_surface_listener, NULL);
xdg_toplevel_add_listener(xdg_toplevel, &xdg_toplevel_listener, NULL);
zxdg_toplevel_decoration_v1_add_listener(decoration, &decoration_listener,
NULL);
wl_surface_commit(surface);
egl_window = wl_egl_window_create(surface, width, height);
egl_surface = wlr_egl_create_surface(&egl, egl_window);
wl_display_roundtrip(display);
draw();
while (wl_display_dispatch(display) != -1) {
// This space is intentionally left blank
}
return EXIT_SUCCESS;
}