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weston/clients/window.c

4071 lines
94 KiB

/*
* Copyright © 2008 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#define _GNU_SOURCE
#include "../config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <assert.h>
#include <time.h>
#include <cairo.h>
#include <sys/mman.h>
#include <sys/epoll.h>
#include <sys/timerfd.h>
#include <pixman.h>
#include <wayland-egl.h>
#ifdef USE_CAIRO_GLESV2
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#else
#include <GL/gl.h>
#endif
#include <EGL/egl.h>
#include <EGL/eglext.h>
#ifdef HAVE_CAIRO_EGL
#include <cairo-gl.h>
#endif
#include <xkbcommon/xkbcommon.h>
#include <wayland-cursor.h>
#include <linux/input.h>
#include <wayland-client.h>
#include "../shared/cairo-util.h"
#include "text-cursor-position-client-protocol.h"
#include "workspaces-client-protocol.h"
#include "../shared/os-compatibility.h"
#include "window.h"
struct shm_pool;
struct display {
struct wl_display *display;
struct wl_compositor *compositor;
struct wl_shell *shell;
struct wl_shm *shm;
struct wl_data_device_manager *data_device_manager;
struct text_cursor_position *text_cursor_position;
struct workspace_manager *workspace_manager;
EGLDisplay dpy;
EGLConfig argb_config;
EGLContext argb_ctx;
cairo_device_t *argb_device;
uint32_t serial;
int display_fd;
uint32_t display_fd_events;
uint32_t mask;
struct task display_task;
int epoll_fd;
struct wl_list deferred_list;
int running;
struct wl_list window_list;
struct wl_list input_list;
struct wl_list output_list;
struct theme *theme;
struct wl_cursor_theme *cursor_theme;
struct wl_cursor **cursors;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
PFNEGLCREATEIMAGEKHRPROC create_image;
PFNEGLDESTROYIMAGEKHRPROC destroy_image;
display_output_handler_t output_configure_handler;
void *user_data;
struct xkb_context *xkb_context;
uint32_t workspace;
uint32_t workspace_count;
};
enum {
TYPE_NONE,
TYPE_TOPLEVEL,
TYPE_FULLSCREEN,
TYPE_MAXIMIZED,
TYPE_TRANSIENT,
TYPE_MENU,
TYPE_CUSTOM
};
struct window_output {
struct output *output;
struct wl_list link;
};
struct window {
struct display *display;
struct window *parent;
struct wl_list window_output_list;
struct wl_surface *surface;
struct wl_shell_surface *shell_surface;
struct wl_region *input_region;
struct wl_region *opaque_region;
char *title;
struct rectangle allocation, saved_allocation, server_allocation;
struct rectangle min_allocation;
struct rectangle pending_allocation;
int x, y;
int resize_edges;
int redraw_scheduled;
int redraw_needed;
struct task redraw_task;
int resize_needed;
int type;
int transparent;
int focus_count;
enum window_buffer_type buffer_type;
cairo_surface_t *cairo_surface;
struct shm_pool *pool;
window_key_handler_t key_handler;
window_keyboard_focus_handler_t keyboard_focus_handler;
window_data_handler_t data_handler;
window_drop_handler_t drop_handler;
window_close_handler_t close_handler;
window_fullscreen_handler_t fullscreen_handler;
struct wl_callback *frame_cb;
struct frame *frame;
struct widget *widget;
void *user_data;
struct wl_list link;
};
struct widget {
struct window *window;
struct tooltip *tooltip;
struct wl_list child_list;
struct wl_list link;
struct rectangle allocation;
widget_resize_handler_t resize_handler;
widget_redraw_handler_t redraw_handler;
widget_enter_handler_t enter_handler;
widget_leave_handler_t leave_handler;
widget_motion_handler_t motion_handler;
widget_button_handler_t button_handler;
widget_axis_handler_t axis_handler;
void *user_data;
int opaque;
int tooltip_count;
};
struct input {
struct display *display;
struct wl_seat *seat;
struct wl_pointer *pointer;
struct wl_keyboard *keyboard;
struct window *pointer_focus;
struct window *keyboard_focus;
int current_cursor;
uint32_t cursor_anim_start;
struct wl_callback *cursor_frame_cb;
struct wl_surface *pointer_surface;
uint32_t modifiers;
uint32_t pointer_enter_serial;
uint32_t cursor_serial;
float sx, sy;
struct wl_list link;
struct widget *focus_widget;
struct widget *grab;
uint32_t grab_button;
struct wl_data_device *data_device;
struct data_offer *drag_offer;
struct data_offer *selection_offer;
struct {
struct xkb_keymap *keymap;
struct xkb_state *state;
xkb_mod_mask_t control_mask;
xkb_mod_mask_t alt_mask;
xkb_mod_mask_t shift_mask;
} xkb;
struct task repeat_task;
int repeat_timer_fd;
uint32_t repeat_sym;
uint32_t repeat_key;
uint32_t repeat_time;
};
struct output {
struct display *display;
struct wl_output *output;
struct rectangle allocation;
struct wl_list link;
display_output_handler_t destroy_handler;
void *user_data;
};
enum frame_button_action {
FRAME_BUTTON_NULL = 0,
FRAME_BUTTON_ICON = 1,
FRAME_BUTTON_CLOSE = 2,
FRAME_BUTTON_MINIMIZE = 3,
FRAME_BUTTON_MAXIMIZE = 4,
};
enum frame_button_pointer {
FRAME_BUTTON_DEFAULT = 0,
FRAME_BUTTON_OVER = 1,
FRAME_BUTTON_ACTIVE = 2,
};
enum frame_button_align {
FRAME_BUTTON_RIGHT = 0,
FRAME_BUTTON_LEFT = 1,
};
enum frame_button_decoration {
FRAME_BUTTON_NONE = 0,
FRAME_BUTTON_FANCY = 1,
};
struct frame_button {
struct widget *widget;
struct frame *frame;
cairo_surface_t *icon;
enum frame_button_action type;
enum frame_button_pointer state;
struct wl_list link; /* buttons_list */
enum frame_button_align align;
enum frame_button_decoration decoration;
};
struct frame {
struct widget *widget;
struct widget *child;
struct wl_list buttons_list;
};
struct menu {
struct window *window;
struct widget *widget;
struct input *input;
const char **entries;
uint32_t time;
int current;
int count;
menu_func_t func;
};
struct tooltip {
struct widget *parent;
struct window *window;
struct widget *widget;
char *entry;
struct task tooltip_task;
int tooltip_fd;
float x, y;
};
struct shm_pool {
struct wl_shm_pool *pool;
size_t size;
size_t used;
void *data;
};
enum {
CURSOR_DEFAULT = 100,
CURSOR_UNSET
};
enum window_location {
WINDOW_INTERIOR = 0,
WINDOW_RESIZING_TOP = 1,
WINDOW_RESIZING_BOTTOM = 2,
WINDOW_RESIZING_LEFT = 4,
WINDOW_RESIZING_TOP_LEFT = 5,
WINDOW_RESIZING_BOTTOM_LEFT = 6,
WINDOW_RESIZING_RIGHT = 8,
WINDOW_RESIZING_TOP_RIGHT = 9,
WINDOW_RESIZING_BOTTOM_RIGHT = 10,
WINDOW_RESIZING_MASK = 15,
WINDOW_EXTERIOR = 16,
WINDOW_TITLEBAR = 17,
WINDOW_CLIENT_AREA = 18,
};
static const cairo_user_data_key_t surface_data_key;
struct surface_data {
struct wl_buffer *buffer;
};
#define MULT(_d,c,a,t) \
do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0)
#ifdef HAVE_CAIRO_EGL
struct egl_window_surface_data {
struct display *display;
struct wl_surface *surface;
struct wl_egl_window *window;
EGLSurface surf;
};
static void
egl_window_surface_data_destroy(void *p)
{
struct egl_window_surface_data *data = p;
struct display *d = data->display;
eglDestroySurface(d->dpy, data->surf);
wl_egl_window_destroy(data->window);
data->surface = NULL;
free(p);
}
static cairo_surface_t *
display_create_egl_window_surface(struct display *display,
struct wl_surface *surface,
uint32_t flags,
struct rectangle *rectangle)
{
cairo_surface_t *cairo_surface;
struct egl_window_surface_data *data;
EGLConfig config;
cairo_device_t *device;
data = malloc(sizeof *data);
if (data == NULL)
return NULL;
data->display = display;
data->surface = surface;
config = display->argb_config;
device = display->argb_device;
data->window = wl_egl_window_create(surface,
rectangle->width,
rectangle->height);
data->surf = eglCreateWindowSurface(display->dpy, config,
data->window, NULL);
cairo_surface = cairo_gl_surface_create_for_egl(device,
data->surf,
rectangle->width,
rectangle->height);
cairo_surface_set_user_data(cairo_surface, &surface_data_key,
data, egl_window_surface_data_destroy);
return cairo_surface;
}
#endif
struct wl_buffer *
display_get_buffer_for_surface(struct display *display,
cairo_surface_t *surface)
{
struct surface_data *data;
data = cairo_surface_get_user_data (surface, &surface_data_key);
return data->buffer;
}
struct shm_surface_data {
struct surface_data data;
struct shm_pool *pool;
};
static void
shm_pool_destroy(struct shm_pool *pool);
static void
shm_surface_data_destroy(void *p)
{
struct shm_surface_data *data = p;
wl_buffer_destroy(data->data.buffer);
if (data->pool)
shm_pool_destroy(data->pool);
free(data);
}
static struct wl_shm_pool *
make_shm_pool(struct display *display, int size, void **data)
{
struct wl_shm_pool *pool;
int fd;
fd = os_create_anonymous_file(size);
if (fd < 0) {
fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
size);
return NULL;
}
*data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (*data == MAP_FAILED) {
fprintf(stderr, "mmap failed: %m\n");
close(fd);
return NULL;
}
pool = wl_shm_create_pool(display->shm, fd, size);
close(fd);
return pool;
}
static struct shm_pool *
shm_pool_create(struct display *display, size_t size)
{
struct shm_pool *pool = malloc(sizeof *pool);
if (!pool)
return NULL;
pool->pool = make_shm_pool(display, size, &pool->data);
if (!pool->pool) {
free(pool);
return NULL;
}
pool->size = size;
pool->used = 0;
return pool;
}
static void *
shm_pool_allocate(struct shm_pool *pool, size_t size, int *offset)
{
if (pool->used + size > pool->size)
return NULL;
*offset = pool->used;
pool->used += size;
return (char *) pool->data + *offset;
}
/* destroy the pool. this does not unmap the memory though */
static void
shm_pool_destroy(struct shm_pool *pool)
{
munmap(pool->data, pool->size);
wl_shm_pool_destroy(pool->pool);
free(pool);
}
/* Start allocating from the beginning of the pool again */
static void
shm_pool_reset(struct shm_pool *pool)
{
pool->used = 0;
}
static int
data_length_for_shm_surface(struct rectangle *rect)
{
int stride;
stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
rect->width);
return stride * rect->height;
}
static cairo_surface_t *
display_create_shm_surface_from_pool(struct display *display,
struct rectangle *rectangle,
uint32_t flags, struct shm_pool *pool)
{
struct shm_surface_data *data;
uint32_t format;
cairo_surface_t *surface;
int stride, length, offset;
void *map;
data = malloc(sizeof *data);
if (data == NULL)
return NULL;
stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
rectangle->width);
length = stride * rectangle->height;
data->pool = NULL;
map = shm_pool_allocate(pool, length, &offset);
if (!map) {
free(data);
return NULL;
}
surface = cairo_image_surface_create_for_data (map,
CAIRO_FORMAT_ARGB32,
rectangle->width,
rectangle->height,
stride);
cairo_surface_set_user_data (surface, &surface_data_key,
data, shm_surface_data_destroy);
if (flags & SURFACE_OPAQUE)
format = WL_SHM_FORMAT_XRGB8888;
else
format = WL_SHM_FORMAT_ARGB8888;
data->data.buffer = wl_shm_pool_create_buffer(pool->pool, offset,
rectangle->width,
rectangle->height,
stride, format);
return surface;
}
static cairo_surface_t *
display_create_shm_surface(struct display *display,
struct rectangle *rectangle, uint32_t flags,
struct window *window)
{
struct shm_surface_data *data;
struct shm_pool *pool;
cairo_surface_t *surface;
if (window && window->pool) {
shm_pool_reset(window->pool);
surface = display_create_shm_surface_from_pool(display,
rectangle,
flags,
window->pool);
if (surface)
return surface;
}
pool = shm_pool_create(display,
data_length_for_shm_surface(rectangle));
if (!pool)
return NULL;
surface =
display_create_shm_surface_from_pool(display, rectangle,
flags, pool);
if (!surface) {
shm_pool_destroy(pool);
return NULL;
}
/* make sure we destroy the pool when the surface is destroyed */
data = cairo_surface_get_user_data(surface, &surface_data_key);
data->pool = pool;
return surface;
}
static int
check_size(struct rectangle *rect)
{
if (rect->width && rect->height)
return 0;
fprintf(stderr, "tried to create surface of "
"width: %d, height: %d\n", rect->width, rect->height);
return -1;
}
cairo_surface_t *
display_create_surface(struct display *display,
struct wl_surface *surface,
struct rectangle *rectangle,
uint32_t flags)
{
if (check_size(rectangle) < 0)
return NULL;
#ifdef HAVE_CAIRO_EGL
if (display->dpy && !(flags & SURFACE_SHM))
return display_create_egl_window_surface(display,
surface,
flags,
rectangle);
#endif
return display_create_shm_surface(display, rectangle, flags, NULL);
}
/*
* The following correspondences between file names and cursors was copied
* from: https://bugs.kde.org/attachment.cgi?id=67313
*/
static const char *bottom_left_corners[] = {
"bottom_left_corner",
"sw-resize"
};
static const char *bottom_right_corners[] = {
"bottom_right_corner",
"se-resize"
};
static const char *bottom_sides[] = {
"bottom_side",
"s-resize"
};
static const char *grabbings[] = {
"grabbing",
"closedhand",
"208530c400c041818281048008011002"
};
static const char *left_ptrs[] = {
"left_ptr",
"default",
"top_left_arrow",
"left-arrow"
};
static const char *left_sides[] = {
"left_side",
"w-resize"
};
static const char *right_sides[] = {
"right_side",
"e-resize"
};
static const char *top_left_corners[] = {
"top_left_corner",
"nw-resize"
};
static const char *top_right_corners[] = {
"top_right_corner",
"ne-resize"
};
static const char *top_sides[] = {
"top_side",
"n-resize"
};
static const char *xterms[] = {
"xterm",
"ibeam",
"text"
};
static const char *hand1s[] = {
"hand1",
"pointer",
"pointing_hand",
"e29285e634086352946a0e7090d73106"
};
static const char *watches[] = {
"watch",
"wait",
"0426c94ea35c87780ff01dc239897213"
};
struct cursor_alternatives {
const char **names;
size_t count;
};
static const struct cursor_alternatives cursors[] = {
{bottom_left_corners, ARRAY_LENGTH(bottom_left_corners)},
{bottom_right_corners, ARRAY_LENGTH(bottom_right_corners)},
{bottom_sides, ARRAY_LENGTH(bottom_sides)},
{grabbings, ARRAY_LENGTH(grabbings)},
{left_ptrs, ARRAY_LENGTH(left_ptrs)},
{left_sides, ARRAY_LENGTH(left_sides)},
{right_sides, ARRAY_LENGTH(right_sides)},
{top_left_corners, ARRAY_LENGTH(top_left_corners)},
{top_right_corners, ARRAY_LENGTH(top_right_corners)},
{top_sides, ARRAY_LENGTH(top_sides)},
{xterms, ARRAY_LENGTH(xterms)},
{hand1s, ARRAY_LENGTH(hand1s)},
{watches, ARRAY_LENGTH(watches)},
};
static void
create_cursors(struct display *display)
{
char *config_file;
char *theme = NULL;
unsigned int i, j;
struct wl_cursor *cursor;
struct config_key shell_keys[] = {
{ "cursor-theme", CONFIG_KEY_STRING, &theme },
};
struct config_section cs[] = {
{ "shell", shell_keys, ARRAY_LENGTH(shell_keys), NULL },
};
config_file = config_file_path("weston.ini");
parse_config_file(config_file, cs, ARRAY_LENGTH(cs), NULL);
free(config_file);
display->cursor_theme = wl_cursor_theme_load(theme, 32, display->shm);
display->cursors =
malloc(ARRAY_LENGTH(cursors) * sizeof display->cursors[0]);
for (i = 0; i < ARRAY_LENGTH(cursors); i++) {
cursor = NULL;
for (j = 0; !cursor && j < cursors[i].count; ++j)
cursor = wl_cursor_theme_get_cursor(
display->cursor_theme, cursors[i].names[j]);
if (!cursor)
fprintf(stderr, "could not load cursor '%s'\n",
cursors[i].names[0]);
display->cursors[i] = cursor;
}
}
static void
destroy_cursors(struct display *display)
{
wl_cursor_theme_destroy(display->cursor_theme);
free(display->cursors);
}
struct wl_cursor_image *
display_get_pointer_image(struct display *display, int pointer)
{
struct wl_cursor *cursor = display->cursors[pointer];
return cursor ? cursor->images[0] : NULL;
}
static void
window_get_resize_dx_dy(struct window *window, int *x, int *y)
{
if (window->resize_edges & WINDOW_RESIZING_LEFT)
*x = window->server_allocation.width - window->allocation.width;
else
*x = 0;
if (window->resize_edges & WINDOW_RESIZING_TOP)
*y = window->server_allocation.height -
window->allocation.height;
else
*y = 0;
window->resize_edges = 0;
}
static void
window_attach_surface(struct window *window)
{
struct display *display = window->display;
struct wl_buffer *buffer;
#ifdef HAVE_CAIRO_EGL
struct egl_window_surface_data *data;
#endif
int32_t x, y;
if (window->type == TYPE_NONE) {
window->type = TYPE_TOPLEVEL;
if (display->shell)
wl_shell_surface_set_toplevel(window->shell_surface);
}
switch (window->buffer_type) {
#ifdef HAVE_CAIRO_EGL
case WINDOW_BUFFER_TYPE_EGL_WINDOW:
data = cairo_surface_get_user_data(window->cairo_surface,
&surface_data_key);
cairo_gl_surface_swapbuffers(window->cairo_surface);
wl_egl_window_get_attached_size(data->window,
&window->server_allocation.width,
&window->server_allocation.height);
break;
#endif
case WINDOW_BUFFER_TYPE_SHM:
buffer =
display_get_buffer_for_surface(display,
window->cairo_surface);
window_get_resize_dx_dy(window, &x, &y);
wl_surface_attach(window->surface, buffer, x, y);
wl_surface_damage(window->surface, 0, 0,
window->allocation.width,
window->allocation.height);
window->server_allocation = window->allocation;
cairo_surface_destroy(window->cairo_surface);
window->cairo_surface = NULL;
break;
default:
return;
}
if (window->input_region) {
wl_surface_set_input_region(window->surface,
window->input_region);
wl_region_destroy(window->input_region);
window->input_region = NULL;
}
if (window->opaque_region) {
wl_surface_set_opaque_region(window->surface,
window->opaque_region);
wl_region_destroy(window->opaque_region);
window->opaque_region = NULL;
}
}
int
window_has_focus(struct window *window)
{
return window->focus_count > 0;
}
void
window_flush(struct window *window)
{
if (window->cairo_surface)
window_attach_surface(window);
}
void
window_set_surface(struct window *window, cairo_surface_t *surface)
{
cairo_surface_reference(surface);
if (window->cairo_surface != NULL)
cairo_surface_destroy(window->cairo_surface);
window->cairo_surface = surface;
}
#ifdef HAVE_CAIRO_EGL
static void
window_resize_cairo_window_surface(struct window *window)
{
struct egl_window_surface_data *data;
int x, y;
data = cairo_surface_get_user_data(window->cairo_surface,
&surface_data_key);
window_get_resize_dx_dy(window, &x, &y),
wl_egl_window_resize(data->window,
window->allocation.width,
window->allocation.height,
x,y);
cairo_gl_surface_set_size(window->cairo_surface,
window->allocation.width,
window->allocation.height);
}
#endif
struct display *
window_get_display(struct window *window)
{
return window->display;
}
void
window_create_surface(struct window *window)
{
cairo_surface_t *surface;
uint32_t flags = 0;
if (!window->transparent)
flags = SURFACE_OPAQUE;
switch (window->buffer_type) {
#ifdef HAVE_CAIRO_EGL
case WINDOW_BUFFER_TYPE_EGL_WINDOW:
if (window->cairo_surface) {
window_resize_cairo_window_surface(window);
return;
}
surface = display_create_surface(window->display,
window->surface,
&window->allocation, flags);
break;
#endif
case WINDOW_BUFFER_TYPE_SHM:
surface = display_create_shm_surface(window->display,
&window->allocation,
flags, window);
break;
default:
surface = NULL;
break;
}
window_set_surface(window, surface);
cairo_surface_destroy(surface);
}
static void frame_destroy(struct frame *frame);
void
window_destroy(struct window *window)
{
struct display *display = window->display;
struct input *input;
struct window_output *window_output;
struct window_output *window_output_tmp;
if (window->redraw_scheduled)
wl_list_remove(&window->redraw_task.link);
wl_list_for_each(input, &display->input_list, link) {
if (input->pointer_focus == window)
input->pointer_focus = NULL;
if (input->keyboard_focus == window)
input->keyboard_focus = NULL;
if (input->focus_widget &&
input->focus_widget->window == window)
input->focus_widget = NULL;
}
wl_list_for_each_safe(window_output, window_output_tmp,
&window->window_output_list, link) {
free (window_output);
}
if (window->input_region)
wl_region_destroy(window->input_region);
if (window->opaque_region)
wl_region_destroy(window->opaque_region);
if (window->frame)
frame_destroy(window->frame);
if (window->shell_surface)
wl_shell_surface_destroy(window->shell_surface);
wl_surface_destroy(window->surface);
wl_list_remove(&window->link);
if (window->cairo_surface != NULL)
cairo_surface_destroy(window->cairo_surface);
if (window->frame_cb)
wl_callback_destroy(window->frame_cb);
free(window->title);
free(window);
}
static struct widget *
widget_find_widget(struct widget *widget, int32_t x, int32_t y)
{
struct widget *child, *target;
wl_list_for_each(child, &widget->child_list, link) {
target = widget_find_widget(child, x, y);
if (target)
return target;
}
if (widget->allocation.x <= x &&
x < widget->allocation.x + widget->allocation.width &&
widget->allocation.y <= y &&
y < widget->allocation.y + widget->allocation.height) {
return widget;
}
return NULL;
}
static struct widget *
widget_create(struct window *window, void *data)
{
struct widget *widget;
widget = malloc(sizeof *widget);
memset(widget, 0, sizeof *widget);
widget->window = window;
widget->user_data = data;
widget->allocation = window->allocation;
wl_list_init(&widget->child_list);
widget->opaque = 0;
widget->tooltip = NULL;
widget->tooltip_count = 0;
return widget;
}
struct widget *
window_add_widget(struct window *window, void *data)
{
window->widget = widget_create(window, data);
wl_list_init(&window->widget->link);
return window->widget;
}
struct widget *
widget_add_widget(struct widget *parent, void *data)
{
struct widget *widget;
widget = widget_create(parent->window, data);
wl_list_insert(parent->child_list.prev, &widget->link);
return widget;
}
void
widget_destroy(struct widget *widget)
{
struct display *display = widget->window->display;
struct input *input;
if (widget->tooltip) {
free(widget->tooltip);
widget->tooltip = NULL;
}
wl_list_for_each(input, &display->input_list, link) {
if (input->focus_widget == widget)
input->focus_widget = NULL;
}
wl_list_remove(&widget->link);
free(widget);
}
void
widget_get_allocation(struct widget *widget, struct rectangle *allocation)
{
*allocation = widget->allocation;
}
void
widget_set_size(struct widget *widget, int32_t width, int32_t height)
{
widget->allocation.width = width;
widget->allocation.height = height;
}
void
widget_set_allocation(struct widget *widget,
int32_t x, int32_t y, int32_t width, int32_t height)
{
widget->allocation.x = x;
widget->allocation.y = y;
widget_set_size(widget, width, height);
}
void
widget_set_transparent(struct widget *widget, int transparent)
{
widget->opaque = !transparent;
}
void *
widget_get_user_data(struct widget *widget)
{
return widget->user_data;
}
void
widget_set_resize_handler(struct widget *widget,
widget_resize_handler_t handler)
{
widget->resize_handler = handler;
}
void
widget_set_redraw_handler(struct widget *widget,
widget_redraw_handler_t handler)
{
widget->redraw_handler = handler;
}
void
widget_set_enter_handler(struct widget *widget, widget_enter_handler_t handler)
{
widget->enter_handler = handler;
}
void
widget_set_leave_handler(struct widget *widget, widget_leave_handler_t handler)
{
widget->leave_handler = handler;
}
void
widget_set_motion_handler(struct widget *widget,
widget_motion_handler_t handler)
{
widget->motion_handler = handler;
}
void
widget_set_button_handler(struct widget *widget,
widget_button_handler_t handler)
{
widget->button_handler = handler;
}
void
widget_set_axis_handler(struct widget *widget,
widget_axis_handler_t handler)
{
widget->axis_handler = handler;
}
void
widget_schedule_redraw(struct widget *widget)
{
window_schedule_redraw(widget->window);
}
cairo_surface_t *
window_get_surface(struct window *window)
{
return cairo_surface_reference(window->cairo_surface);
}
struct wl_surface *
window_get_wl_surface(struct window *window)
{
return window->surface;
}
struct wl_shell_surface *
window_get_wl_shell_surface(struct window *window)
{
return window->shell_surface;
}
static void
tooltip_redraw_handler(struct widget *widget, void *data)
{
cairo_t *cr;
const int32_t r = 3;
struct tooltip *tooltip = data;
int32_t width, height;
struct window *window = widget->window;
cr = cairo_create(window->cairo_surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
cairo_paint(cr);
width = window->allocation.width;
height = window->allocation.height;
rounded_rect(cr, 0, 0, width, height, r);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
cairo_fill(cr);
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
cairo_move_to(cr, 10, 16);
cairo_show_text(cr, tooltip->entry);
cairo_destroy(cr);
}
static cairo_text_extents_t
get_text_extents(struct tooltip *tooltip)
{
struct window *window;
cairo_t *cr;
cairo_text_extents_t extents;
/* we borrow cairo_surface from the parent cause tooltip's wasn't
* created yet */
window = tooltip->widget->window->parent;
cr = cairo_create(window->cairo_surface);
cairo_text_extents(cr, tooltip->entry, &extents);
cairo_destroy(cr);
return extents;
}
static int
window_create_tooltip(struct tooltip *tooltip)
{
struct widget *parent = tooltip->parent;
struct display *display = parent->window->display;
struct window *window;
const int offset_y = 27;
const int margin = 3;
cairo_text_extents_t extents;
if (tooltip->widget)
return 0;
window = window_create_transient(display, parent->window, tooltip->x,
tooltip->y + offset_y,
WL_SHELL_SURFACE_TRANSIENT_INACTIVE);
if (!window)
return -1;
tooltip->window = window;
tooltip->widget = window_add_widget(tooltip->window, tooltip);
extents = get_text_extents(tooltip);
widget_set_redraw_handler(tooltip->widget, tooltip_redraw_handler);
window_schedule_resize(window, extents.width + 20, 20 + margin * 2);
return 0;
}
void
widget_destroy_tooltip(struct widget *parent)
{
struct tooltip *tooltip = parent->tooltip;
parent->tooltip_count = 0;
if (!tooltip)
return;
if (tooltip->widget) {
widget_destroy(tooltip->widget);
window_destroy(tooltip->window);
tooltip->widget = NULL;
tooltip->window = NULL;
}
close(tooltip->tooltip_fd);
free(tooltip->entry);
free(tooltip);
parent->tooltip = NULL;
}
static void
tooltip_func(struct task *task, uint32_t events)
{
struct tooltip *tooltip =
container_of(task, struct tooltip, tooltip_task);
uint64_t exp;
if (read(tooltip->tooltip_fd, &exp, sizeof (uint64_t)) != sizeof (uint64_t))
abort();
window_create_tooltip(tooltip);
}
#define TOOLTIP_TIMEOUT 500
static int
tooltip_timer_reset(struct tooltip *tooltip)
{
struct itimerspec its;
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = TOOLTIP_TIMEOUT / 1000;
its.it_value.tv_nsec = (TOOLTIP_TIMEOUT % 1000) * 1000 * 1000;
if (timerfd_settime(tooltip->tooltip_fd, 0, &its, NULL) < 0) {
fprintf(stderr, "could not set timerfd\n: %m");
return -1;
}
return 0;
}
int
widget_set_tooltip(struct widget *parent, char *entry, float x, float y)
{
struct tooltip *tooltip = parent->tooltip;
parent->tooltip_count++;
if (tooltip) {
tooltip->x = x;
tooltip->y = y;
tooltip_timer_reset(tooltip);
return 0;
}
/* the handler might be triggered too fast via input device motion, so
* we need this check here to make sure tooltip is fully initialized */
if (parent->tooltip_count > 1)
return 0;
tooltip = malloc(sizeof *tooltip);
if (!tooltip)
return -1;
parent->tooltip = tooltip;
tooltip->parent = parent;
tooltip->widget = NULL;
tooltip->window = NULL;
tooltip->x = x;
tooltip->y = y;
tooltip->entry = strdup(entry);
tooltip->tooltip_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
if (tooltip->tooltip_fd < 0) {
fprintf(stderr, "could not create timerfd\n: %m");
return -1;
}
tooltip->tooltip_task.run = tooltip_func;
display_watch_fd(parent->window->display, tooltip->tooltip_fd,
EPOLLIN, &tooltip->tooltip_task);
tooltip_timer_reset(tooltip);
return 0;
}
static void
workspace_manager_state(void *data,
struct workspace_manager *workspace_manager,
uint32_t current,
uint32_t count)
{
struct display *display = data;
display->workspace = current;
display->workspace_count = count;
}
static const struct workspace_manager_listener workspace_manager_listener = {
workspace_manager_state
};
static void
frame_resize_handler(struct widget *widget,
int32_t width, int32_t height, void *data)
{
struct frame *frame = data;
struct widget *child = frame->child;
struct rectangle allocation;
struct display *display = widget->window->display;
struct frame_button * button;
struct theme *t = display->theme;
int x_l, x_r, y, w, h;
int decoration_width, decoration_height;
int opaque_margin, shadow_margin;
switch (widget->window->type) {
case TYPE_FULLSCREEN:
decoration_width = 0;
decoration_height = 0;
allocation.x = 0;
allocation.y = 0;
allocation.width = width;
allocation.height = height;
opaque_margin = 0;
wl_list_for_each(button, &frame->buttons_list, link)
button->widget->opaque = 1;
break;
case TYPE_MAXIMIZED:
decoration_width = t->width * 2;
decoration_height = t->width + t->titlebar_height;
allocation.x = t->width;
allocation.y = t->titlebar_height;
allocation.width = width - decoration_width;
allocation.height = height - decoration_height;
opaque_margin = 0;
wl_list_for_each(button, &frame->buttons_list, link)
button->widget->opaque = 0;
break;
default:
decoration_width = (t->width + t->margin) * 2;
decoration_height = t->width +
t->titlebar_height + t->margin * 2;
allocation.x = t->width + t->margin;
allocation.y = t->titlebar_height + t->margin;
allocation.width = width - decoration_width;
allocation.height = height - decoration_height;
opaque_margin = t->margin + t->frame_radius;
wl_list_for_each(button, &frame->buttons_list, link)
button->widget->opaque = 0;
break;
}
widget_set_allocation(child, allocation.x, allocation.y,
allocation.width, allocation.height);
if (child->resize_handler)
child->resize_handler(child,
allocation.width,
allocation.height,
child->user_data);
width = child->allocation.width + decoration_width;
height = child->allocation.height + decoration_height;
shadow_margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
if (widget->window->type != TYPE_FULLSCREEN) {
widget->window->input_region =
wl_compositor_create_region(display->compositor);
wl_region_add(widget->window->input_region,
shadow_margin, shadow_margin,
width - 2 * shadow_margin,
height - 2 * shadow_margin);
}
widget_set_allocation(widget, 0, 0, width, height);
if (child->opaque) {
widget->window->opaque_region =
wl_compositor_create_region(display->compositor);
wl_region_add(widget->window->opaque_region,
opaque_margin, opaque_margin,
widget->allocation.width - 2 * opaque_margin,
widget->allocation.height - 2 * opaque_margin);
}
/* frame internal buttons */
x_r = frame->widget->allocation.width - t->width - shadow_margin;
x_l = t->width + shadow_margin;
y = t->width + shadow_margin;
wl_list_for_each(button, &frame->buttons_list, link) {
const int button_padding = 4;
w = cairo_image_surface_get_width(button->icon);
h = cairo_image_surface_get_height(button->icon);
if (button->decoration == FRAME_BUTTON_FANCY)
w += 10;
if (button->align == FRAME_BUTTON_LEFT) {
widget_set_allocation(button->widget,
x_l, y , w + 1, h + 1);
x_l += w;
x_l += button_padding;
} else {
x_r -= w;
widget_set_allocation(button->widget,
x_r, y , w + 1, h + 1);
x_r -= button_padding;
}
}
}
static int
frame_button_enter_handler(struct widget *widget,
struct input *input, float x, float y, void *data)
{
struct frame_button *frame_button = data;
widget_schedule_redraw(frame_button->widget);
frame_button->state = FRAME_BUTTON_OVER;
return CURSOR_LEFT_PTR;
}
static void
frame_button_leave_handler(struct widget *widget, struct input *input, void *data)
{
struct frame_button *frame_button = data;
widget_schedule_redraw(frame_button->widget);
frame_button->state = FRAME_BUTTON_DEFAULT;
}
static void
frame_button_button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button,
enum wl_pointer_button_state state, void *data)
{
struct frame_button *frame_button = data;
struct window *window = widget->window;
int was_pressed = (frame_button->state == FRAME_BUTTON_ACTIVE);
if (button != BTN_LEFT)
return;
switch (state) {
case WL_POINTER_BUTTON_STATE_PRESSED:
frame_button->state = FRAME_BUTTON_ACTIVE;
widget_schedule_redraw(frame_button->widget);
if (frame_button->type == FRAME_BUTTON_ICON)
window_show_frame_menu(window, input, time);
return;
case WL_POINTER_BUTTON_STATE_RELEASED:
frame_button->state = FRAME_BUTTON_DEFAULT;
widget_schedule_redraw(frame_button->widget);
break;
}
if (!was_pressed)
return;
switch (frame_button->type) {
case FRAME_BUTTON_CLOSE:
if (window->close_handler)
window->close_handler(window->parent,
window->user_data);
else
display_exit(window->display);
break;
case FRAME_BUTTON_MINIMIZE:
fprintf(stderr,"Minimize stub\n");
break;
case FRAME_BUTTON_MAXIMIZE:
window_set_maximized(window, window->type != TYPE_MAXIMIZED);
break;
default:
/* Unknown operation */
break;
}
}
static int
frame_button_motion_handler(struct widget *widget,
struct input *input, uint32_t time,
float x, float y, void *data)
{
struct frame_button *frame_button = data;
enum frame_button_pointer previous_button_state = frame_button->state;
/* only track state for a pressed button */
if (input->grab != widget)
return CURSOR_LEFT_PTR;
if (x > widget->allocation.x &&
x < (widget->allocation.x + widget->allocation.width) &&
y > widget->allocation.y &&
y < (widget->allocation.y + widget->allocation.height)) {
frame_button->state = FRAME_BUTTON_ACTIVE;
} else {
frame_button->state = FRAME_BUTTON_DEFAULT;
}
if (frame_button->state != previous_button_state)
widget_schedule_redraw(frame_button->widget);
return CURSOR_LEFT_PTR;
}
static void
frame_button_redraw_handler(struct widget *widget, void *data)
{
struct frame_button *frame_button = data;
cairo_t *cr;
int width, height, x, y;
struct window *window = widget->window;
x = widget->allocation.x;
y = widget->allocation.y;
width = widget->allocation.width;
height = widget->allocation.height;
if (!width)
return;
if (!height)
return;
if (widget->opaque)
return;
cr = cairo_create(window->cairo_surface);
if (frame_button->decoration == FRAME_BUTTON_FANCY) {
cairo_set_line_width(cr, 1);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
cairo_rectangle (cr, x, y, 25, 16);
cairo_stroke_preserve(cr);
switch (frame_button->state) {
case FRAME_BUTTON_DEFAULT:
cairo_set_source_rgb(cr, 0.88, 0.88, 0.88);
break;
case FRAME_BUTTON_OVER:
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
break;
case FRAME_BUTTON_ACTIVE:
cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
break;
}
cairo_fill (cr);
x += 4;
}
cairo_set_source_surface(cr, frame_button->icon, x, y);
cairo_paint(cr);
cairo_destroy(cr);
}
static struct widget *
frame_button_create(struct frame *frame, void *data, enum frame_button_action type,
enum frame_button_align align, enum frame_button_decoration style)
{
struct frame_button *frame_button;
const char *icon = data;
frame_button = malloc (sizeof *frame_button);
memset(frame_button, 0, sizeof *frame_button);
frame_button->icon = cairo_image_surface_create_from_png(icon);
frame_button->widget = widget_add_widget(frame->widget, frame_button);
frame_button->frame = frame;
frame_button->type = type;
frame_button->align = align;
frame_button->decoration = style;
wl_list_insert(frame->buttons_list.prev, &frame_button->link);
widget_set_redraw_handler(frame_button->widget, frame_button_redraw_handler);
widget_set_enter_handler(frame_button->widget, frame_button_enter_handler);
widget_set_leave_handler(frame_button->widget, frame_button_leave_handler);
widget_set_button_handler(frame_button->widget, frame_button_button_handler);
widget_set_motion_handler(frame_button->widget, frame_button_motion_handler);
return frame_button->widget;
}
static void
frame_button_destroy(struct frame_button *frame_button)
{
widget_destroy(frame_button->widget);
wl_list_remove(&frame_button->link);
cairo_surface_destroy(frame_button->icon);
free(frame_button);
return;
}
static void
frame_redraw_handler(struct widget *widget, void *data)
{
cairo_t *cr;
struct window *window = widget->window;
struct theme *t = window->display->theme;
uint32_t flags = 0;
if (window->type == TYPE_FULLSCREEN)
return;
cr = cairo_create(window->cairo_surface);
if (window->focus_count)
flags |= THEME_FRAME_ACTIVE;
if (window->type == TYPE_MAXIMIZED)
flags |= THEME_FRAME_MAXIMIZED;
theme_render_frame(t, cr, widget->allocation.width,
widget->allocation.height, window->title, flags);
cairo_destroy(cr);
}
static int
frame_get_pointer_image_for_location(struct frame *frame, struct input *input)
{
struct theme *t = frame->widget->window->display->theme;
struct window *window = frame->widget->window;
int location;
location = theme_get_location(t, input->sx, input->sy,
frame->widget->allocation.width,
frame->widget->allocation.height,
window->type == TYPE_MAXIMIZED ?
THEME_FRAME_MAXIMIZED : 0);
switch (location) {
case THEME_LOCATION_RESIZING_TOP:
return CURSOR_TOP;
case THEME_LOCATION_RESIZING_BOTTOM:
return CURSOR_BOTTOM;
case THEME_LOCATION_RESIZING_LEFT:
return CURSOR_LEFT;
case THEME_LOCATION_RESIZING_RIGHT:
return CURSOR_RIGHT;
case THEME_LOCATION_RESIZING_TOP_LEFT:
return CURSOR_TOP_LEFT;
case THEME_LOCATION_RESIZING_TOP_RIGHT:
return CURSOR_TOP_RIGHT;
case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
return CURSOR_BOTTOM_LEFT;
case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
return CURSOR_BOTTOM_RIGHT;
case THEME_LOCATION_EXTERIOR:
case THEME_LOCATION_TITLEBAR:
default:
return CURSOR_LEFT_PTR;
}
}
static void
frame_menu_func(struct window *window, int index, void *data)
{
struct display *display;
switch (index) {
case 0: /* close */
if (window->close_handler)
window->close_handler(window->parent,
window->user_data);
else
display_exit(window->display);
break;
case 1: /* fullscreen */
/* we don't have a way to get out of fullscreen for now */
if (window->fullscreen_handler)
window->fullscreen_handler(window, window->user_data);
break;
case 2: /* move to workspace above */
display = window->display;
if (display->workspace > 0)
workspace_manager_move_surface(display->workspace_manager,
window->surface,
display->workspace - 1);
break;
case 3: /* move to workspace below */
display = window->display;
if (display->workspace < display->workspace_count - 1)
workspace_manager_move_surface(display->workspace_manager,
window->surface,
display->workspace + 1);
break;
}
}
void
window_show_frame_menu(struct window *window,
struct input *input, uint32_t time)
{
int32_t x, y;
static const char *entries[] = {
"Close", "Fullscreen",
"Move to workspace above", "Move to workspace below"
};
input_get_position(input, &x, &y);
window_show_menu(window->display, input, time, window,
x - 10, y - 10, frame_menu_func, entries,
ARRAY_LENGTH(entries));
}
static int
frame_enter_handler(struct widget *widget,
struct input *input, float x, float y, void *data)
{
return frame_get_pointer_image_for_location(data, input);
}
static int
frame_motion_handler(struct widget *widget,
struct input *input, uint32_t time,
float x, float y, void *data)
{
return frame_get_pointer_image_for_location(data, input);
}
static void
frame_button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button, enum wl_pointer_button_state state,
void *data)
{
struct frame *frame = data;
struct window *window = widget->window;
struct display *display = window->display;
int location;
location = theme_get_location(display->theme, input->sx, input->sy,
frame->widget->allocation.width,
frame->widget->allocation.height,
window->type == TYPE_MAXIMIZED ?
THEME_FRAME_MAXIMIZED : 0);
if (window->display->shell && button == BTN_LEFT &&
state == WL_POINTER_BUTTON_STATE_PRESSED) {
switch (location) {
case THEME_LOCATION_TITLEBAR:
if (!window->shell_surface)
break;
input_set_pointer_image(input, CURSOR_DRAGGING);
input_ungrab(input);
wl_shell_surface_move(window->shell_surface,
input_get_seat(input),
display->serial);
break;
case THEME_LOCATION_RESIZING_TOP:
case THEME_LOCATION_RESIZING_BOTTOM:
case THEME_LOCATION_RESIZING_LEFT:
case THEME_LOCATION_RESIZING_RIGHT:
case THEME_LOCATION_RESIZING_TOP_LEFT:
case THEME_LOCATION_RESIZING_TOP_RIGHT:
case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
if (!window->shell_surface)
break;
input_ungrab(input);
if (!display->dpy) {
/* If we're using shm, allocate a big
pool to create buffers out of while
we resize. We should probably base
this number on the size of the output. */
window->pool =
shm_pool_create(display, 6 * 1024 * 1024);
}
wl_shell_surface_resize(window->shell_surface,
input_get_seat(input),
display->serial, location);
break;
}
} else if (button == BTN_RIGHT &&
state == WL_POINTER_BUTTON_STATE_PRESSED) {
window_show_frame_menu(window, input, time);
}
}
struct widget *
frame_create(struct window *window, void *data)
{
struct frame *frame;
frame = malloc(sizeof *frame);
memset(frame, 0, sizeof *frame);
frame->widget = window_add_widget(window, frame);
frame->child = widget_add_widget(frame->widget, data);
widget_set_redraw_handler(frame->widget, frame_redraw_handler);
widget_set_resize_handler(frame->widget, frame_resize_handler);
widget_set_enter_handler(frame->widget, frame_enter_handler);
widget_set_motion_handler(frame->widget, frame_motion_handler);
widget_set_button_handler(frame->widget, frame_button_handler);
/* Create empty list for frame buttons */
wl_list_init(&frame->buttons_list);
frame_button_create(frame, DATADIR "/weston/icon_window.png",
FRAME_BUTTON_ICON, FRAME_BUTTON_LEFT, FRAME_BUTTON_NONE);
frame_button_create(frame, DATADIR "/weston/sign_close.png",
FRAME_BUTTON_CLOSE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
frame_button_create(frame, DATADIR "/weston/sign_maximize.png",
FRAME_BUTTON_MAXIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
frame_button_create(frame, DATADIR "/weston/sign_minimize.png",
FRAME_BUTTON_MINIMIZE, FRAME_BUTTON_RIGHT, FRAME_BUTTON_FANCY);
window->frame = frame;
return frame->child;
}
void
frame_set_child_size(struct widget *widget, int child_width, int child_height)
{
struct display *display = widget->window->display;
struct theme *t = display->theme;
int decoration_width, decoration_height;
int width, height;
int margin = widget->window->type == TYPE_MAXIMIZED ? 0 : t->margin;
if (widget->window->type != TYPE_FULLSCREEN) {
decoration_width = (t->width + margin) * 2;
decoration_height = t->width +
t->titlebar_height + margin * 2;
width = child_width + decoration_width;
height = child_height + decoration_height;
} else {
width = child_width;
height = child_height;
}
window_schedule_resize(widget->window, width, height);
}
static void
frame_destroy(struct frame *frame)
{
struct frame_button *button, *tmp;
wl_list_for_each_safe(button, tmp, &frame->buttons_list, link)
frame_button_destroy(button);
/* frame->child must be destroyed by the application */
widget_destroy(frame->widget);
free(frame);
}
static void
input_set_focus_widget(struct input *input, struct widget *focus,
float x, float y)
{
struct widget *old, *widget;
int pointer = CURSOR_LEFT_PTR;
if (focus == input->focus_widget)
return;
old = input->focus_widget;
if (old) {
widget = old;
if (input->grab)
widget = input->grab;
if (widget->leave_handler)
widget->leave_handler(old, input, widget->user_data);
input->focus_widget = NULL;
}
if (focus) {
widget = focus;
if (input->grab)
widget = input->grab;
input->focus_widget = focus;
if (widget->enter_handler)
pointer = widget->enter_handler(focus, input, x, y,
widget->user_data);
input_set_pointer_image(input, pointer);
}
}
void
input_grab(struct input *input, struct widget *widget, uint32_t button)
{
input->grab = widget;
input->grab_button = button;
}
void
input_ungrab(struct input *input)
{
struct widget *widget;
input->grab = NULL;
if (input->pointer_focus) {
widget = widget_find_widget(input->pointer_focus->widget,
input->sx, input->sy);
input_set_focus_widget(input, widget, input->sx, input->sy);
}
}
static void
input_remove_pointer_focus(struct input *input)
{
struct window *window = input->pointer_focus;
if (!window)
return;
input_set_focus_widget(input, NULL, 0, 0);
input->pointer_focus = NULL;
input->current_cursor = CURSOR_UNSET;
}
static void
pointer_handle_enter(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t sx_w, wl_fixed_t sy_w)
{
struct input *input = data;
struct window *window;
struct widget *widget;
float sx = wl_fixed_to_double(sx_w);
float sy = wl_fixed_to_double(sy_w);
if (!surface) {
/* enter event for a window we've just destroyed */
return;
}
input->display->serial = serial;
input->pointer_enter_serial = serial;
input->pointer_focus = wl_surface_get_user_data(surface);
window = input->pointer_focus;
if (window->pool) {
shm_pool_destroy(window->pool);
window->pool = NULL;
/* Schedule a redraw to free the pool */
window_schedule_redraw(window);
}
input->sx = sx;
input->sy = sy;
widget = widget_find_widget(window->widget, sx, sy);
input_set_focus_widget(input, widget, sx, sy);
}
static void
pointer_handle_leave(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface)
{
struct input *input = data;
input->display->serial = serial;
input_remove_pointer_focus(input);
}
static void
pointer_handle_motion(void *data, struct wl_pointer *pointer,
uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
{
struct input *input = data;
struct window *window = input->pointer_focus;
struct widget *widget;
int cursor = CURSOR_LEFT_PTR;
float sx = wl_fixed_to_double(sx_w);
float sy = wl_fixed_to_double(sy_w);
input->sx = sx;
input->sy = sy;
if (!window)
return;
if (!(input->grab && input->grab_button)) {
widget = widget_find_widget(window->widget, sx, sy);
input_set_focus_widget(input, widget, sx, sy);
}
if (input->grab)
widget = input->grab;
else
widget = input->focus_widget;
if (widget && widget->motion_handler)
cursor = widget->motion_handler(widget,
input, time, sx, sy,
widget->user_data);
input_set_pointer_image(input, cursor);
}
static void
pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
uint32_t time, uint32_t button, uint32_t state_w)
{
struct input *input = data;
struct widget *widget;
enum wl_pointer_button_state state = state_w;
input->display->serial = serial;
if (input->focus_widget && input->grab == NULL &&
state == WL_POINTER_BUTTON_STATE_PRESSED)
input_grab(input, input->focus_widget, button);
widget = input->grab;
if (widget && widget->button_handler)
(*widget->button_handler)(widget,
input, time,
button, state,
input->grab->user_data);
if (input->grab && input->grab_button == button &&
state == WL_POINTER_BUTTON_STATE_RELEASED)
input_ungrab(input);
}
static void
pointer_handle_axis(void *data, struct wl_pointer *pointer,
uint32_t time, uint32_t axis, wl_fixed_t value)
{
struct input *input = data;
struct widget *widget;
widget = input->focus_widget;
if (input->grab)
widget = input->grab;
if (widget && widget->axis_handler)
(*widget->axis_handler)(widget,
input, time,
axis, value,
widget->user_data);
}
static const struct wl_pointer_listener pointer_listener = {
pointer_handle_enter,
pointer_handle_leave,
pointer_handle_motion,
pointer_handle_button,
pointer_handle_axis,
};
static void
input_remove_keyboard_focus(struct input *input)
{
struct window *window = input->keyboard_focus;
struct itimerspec its;
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = 0;
its.it_value.tv_nsec = 0;
timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
if (!window)
return;
window->focus_count--;
if (window->keyboard_focus_handler)
(*window->keyboard_focus_handler)(window, NULL,
window->user_data);
input->keyboard_focus = NULL;
}
static void
keyboard_repeat_func(struct task *task, uint32_t events)
{
struct input *input =
container_of(task, struct input, repeat_task);
struct window *window = input->keyboard_focus;
uint64_t exp;
if (read(input->repeat_timer_fd, &exp, sizeof exp) != sizeof exp)
/* If we change the timer between the fd becoming
* readable and getting here, there'll be nothing to
* read and we get EAGAIN. */
return;
if (window && window->key_handler) {
(*window->key_handler)(window, input, input->repeat_time,
input->repeat_key, input->repeat_sym,
WL_KEYBOARD_KEY_STATE_PRESSED,
window->user_data);
}
}
static void
keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
uint32_t format, int fd, uint32_t size)
{
struct input *input = data;
char *map_str;
if (!data) {
close(fd);
return;
}
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
close(fd);
return;
}
map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (map_str == MAP_FAILED) {
close(fd);
return;
}
input->xkb.keymap = xkb_map_new_from_string(input->display->xkb_context,
map_str,
XKB_KEYMAP_FORMAT_TEXT_V1,
0);
munmap(map_str, size);
close(fd);
if (!input->xkb.keymap) {
fprintf(stderr, "failed to compile keymap\n");
return;
}
input->xkb.state = xkb_state_new(input->xkb.keymap);
if (!input->xkb.state) {
fprintf(stderr, "failed to create XKB state\n");
xkb_map_unref(input->xkb.keymap);
input->xkb.keymap = NULL;
return;
}
input->xkb.control_mask =
1 << xkb_map_mod_get_index(input->xkb.keymap, "Control");
input->xkb.alt_mask =
1 << xkb_map_mod_get_index(input->xkb.keymap, "Mod1");
input->xkb.shift_mask =
1 << xkb_map_mod_get_index(input->xkb.keymap, "Shift");
}
static void
keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface,
struct wl_array *keys)
{
struct input *input = data;
struct window *window;
input->display->serial = serial;
input->keyboard_focus = wl_surface_get_user_data(surface);
window = input->keyboard_focus;
window->focus_count++;
if (window->keyboard_focus_handler)
(*window->keyboard_focus_handler)(window,
input, window->user_data);
}
static void
keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface)
{
struct input *input = data;
input->display->serial = serial;
input_remove_keyboard_focus(input);
}
static void
keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t time, uint32_t key,
uint32_t state_w)
{
struct input *input = data;
struct window *window = input->keyboard_focus;
uint32_t code, num_syms;
enum wl_keyboard_key_state state = state_w;
const xkb_keysym_t *syms;
xkb_keysym_t sym;
xkb_mod_mask_t mask;
struct itimerspec its;
input->display->serial = serial;
code = key + 8;
if (!window || !input->xkb.state)
return;
num_syms = xkb_key_get_syms(input->xkb.state, code, &syms);
mask = xkb_state_serialize_mods(input->xkb.state,
XKB_STATE_DEPRESSED |
XKB_STATE_LATCHED);
input->modifiers = 0;
if (mask & input->xkb.control_mask)
input->modifiers |= MOD_CONTROL_MASK;
if (mask & input->xkb.alt_mask)
input->modifiers |= MOD_ALT_MASK;
if (mask & input->xkb.shift_mask)
input->modifiers |= MOD_SHIFT_MASK;
sym = XKB_KEY_NoSymbol;
if (num_syms == 1)
sym = syms[0];
if (sym == XKB_KEY_F5 && input->modifiers == MOD_ALT_MASK) {
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
window_set_maximized(window,
window->type != TYPE_MAXIMIZED);
} else if (sym == XKB_KEY_F11 &&
window->fullscreen_handler &&
state == WL_KEYBOARD_KEY_STATE_PRESSED) {
window->fullscreen_handler(window, window->user_data);
} else if (sym == XKB_KEY_F4 &&
input->modifiers == MOD_ALT_MASK &&
state == WL_KEYBOARD_KEY_STATE_PRESSED) {
if (window->close_handler)
window->close_handler(window->parent,
window->user_data);
else
display_exit(window->display);
} else if (window->key_handler) {
(*window->key_handler)(window, input, time, key,
sym, state, window->user_data);
}
if (state == WL_KEYBOARD_KEY_STATE_RELEASED &&
key == input->repeat_key) {
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = 0;
its.it_value.tv_nsec = 0;
timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
} else if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
input->repeat_sym = sym;
input->repeat_key = key;
input->repeat_time = time;
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 25 * 1000 * 1000;
its.it_value.tv_sec = 0;
its.it_value.tv_nsec = 400 * 1000 * 1000;
timerfd_settime(input->repeat_timer_fd, 0, &its, NULL);
}
}
static void
keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t mods_depressed,
uint32_t mods_latched, uint32_t mods_locked,
uint32_t group)
{
struct input *input = data;
xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
mods_locked, 0, 0, group);
}
static const struct wl_keyboard_listener keyboard_listener = {
keyboard_handle_keymap,
keyboard_handle_enter,
keyboard_handle_leave,
keyboard_handle_key,
keyboard_handle_modifiers,
};
static void
seat_handle_capabilities(void *data, struct wl_seat *seat,
enum wl_seat_capability caps)
{
struct input *input = data;
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
input->pointer = wl_seat_get_pointer(seat);
wl_pointer_set_user_data(input->pointer, input);
wl_pointer_add_listener(input->pointer, &pointer_listener,
input);
} else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
wl_pointer_destroy(input->pointer);
input->pointer = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
input->keyboard = wl_seat_get_keyboard(seat);
wl_keyboard_set_user_data(input->keyboard, input);
wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
input);
} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
wl_keyboard_destroy(input->keyboard);
input->keyboard = NULL;
}
}
static const struct wl_seat_listener seat_listener = {
seat_handle_capabilities,
};
void
input_get_position(struct input *input, int32_t *x, int32_t *y)
{
*x = input->sx;
*y = input->sy;
}
struct display *
input_get_display(struct input *input)
{
return input->display;
}
struct wl_seat *
input_get_seat(struct input *input)
{
return input->seat;
}
uint32_t
input_get_modifiers(struct input *input)
{
return input->modifiers;
}
struct widget *
input_get_focus_widget(struct input *input)
{
return input->focus_widget;
}
struct data_offer {
struct wl_data_offer *offer;
struct input *input;
struct wl_array types;
int refcount;
struct task io_task;
int fd;
data_func_t func;
int32_t x, y;
void *user_data;
};
static void
data_offer_offer(void *data, struct wl_data_offer *wl_data_offer, const char *type)
{
struct data_offer *offer = data;
char **p;
p = wl_array_add(&offer->types, sizeof *p);
*p = strdup(type);
}
static const struct wl_data_offer_listener data_offer_listener = {
data_offer_offer,
};
static void
data_offer_destroy(struct data_offer *offer)
{
char **p;
offer->refcount--;
if (offer->refcount == 0) {
wl_data_offer_destroy(offer->offer);
for (p = offer->types.data; *p; p++)
free(*p);
wl_array_release(&offer->types);
free(offer);
}
}
static void
data_device_data_offer(void *data,
struct wl_data_device *data_device,
struct wl_data_offer *_offer)
{
struct data_offer *offer;
offer = malloc(sizeof *offer);
wl_array_init(&offer->types);
offer->refcount = 1;
offer->input = data;
offer->offer = _offer;
wl_data_offer_add_listener(offer->offer,
&data_offer_listener, offer);
}
static void
data_device_enter(void *data, struct wl_data_device *data_device,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t x_w, wl_fixed_t y_w,
struct wl_data_offer *offer)
{
struct input *input = data;
struct window *window;
void *types_data;
float x = wl_fixed_to_double(x_w);
float y = wl_fixed_to_double(y_w);
char **p;
input->pointer_enter_serial = serial;
window = wl_surface_get_user_data(surface);
input->pointer_focus = window;
if (offer) {
input->drag_offer = wl_data_offer_get_user_data(offer);
p = wl_array_add(&input->drag_offer->types, sizeof *p);
*p = NULL;
types_data = input->drag_offer->types.data;
} else {
input->drag_offer = NULL;
types_data = NULL;
}
window = input->pointer_focus;
if (window->data_handler)
window->data_handler(window, input, x, y, types_data,
window->user_data);
}
static void
data_device_leave(void *data, struct wl_data_device *data_device)
{
struct input *input = data;
if (input->drag_offer) {
data_offer_destroy(input->drag_offer);
input->drag_offer = NULL;
}
}
static void
data_device_motion(void *data, struct wl_data_device *data_device,
uint32_t time, wl_fixed_t x_w, wl_fixed_t y_w)
{
struct input *input = data;
struct window *window = input->pointer_focus;
float x = wl_fixed_to_double(x_w);
float y = wl_fixed_to_double(y_w);
void *types_data;
input->sx = x;
input->sy = y;
if (input->drag_offer)
types_data = input->drag_offer->types.data;
else
types_data = NULL;
if (window->data_handler)
window->data_handler(window, input, x, y, types_data,
window->user_data);
}
static void
data_device_drop(void *data, struct wl_data_device *data_device)
{
struct input *input = data;
struct window *window = input->pointer_focus;
if (window->drop_handler)
window->drop_handler(window, input,
input->sx, input->sy, window->user_data);
}
static void
data_device_selection(void *data,
struct wl_data_device *wl_data_device,
struct wl_data_offer *offer)
{
struct input *input = data;
char **p;
if (input->selection_offer)
data_offer_destroy(input->selection_offer);
if (offer) {
input->selection_offer = wl_data_offer_get_user_data(offer);
p = wl_array_add(&input->selection_offer->types, sizeof *p);
*p = NULL;
} else {
input->selection_offer = NULL;
}
}
static const struct wl_data_device_listener data_device_listener = {
data_device_data_offer,
data_device_enter,
data_device_leave,
data_device_motion,
data_device_drop,
data_device_selection
};
static void
input_set_pointer_image_index(struct input *input, int index)
{
struct wl_buffer *buffer;
struct wl_cursor *cursor;
struct wl_cursor_image *image;
cursor = input->display->cursors[input->current_cursor];
if (!cursor)
return;
if (index >= (int) cursor->image_count) {
fprintf(stderr, "cursor index out of range\n");
return;
}
image = cursor->images[index];
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
wl_pointer_set_cursor(input->pointer, input->pointer_enter_serial,
input->pointer_surface,
image->hotspot_x, image->hotspot_y);
wl_surface_attach(input->pointer_surface, buffer, 0, 0);
wl_surface_damage(input->pointer_surface, 0, 0,
image->width, image->height);
}
static const struct wl_callback_listener pointer_surface_listener;
static void
pointer_surface_frame_callback(void *data, struct wl_callback *callback,
uint32_t time)
{
struct input *input = data;
struct wl_cursor *cursor;
int i;
if (callback) {
assert(callback == input->cursor_frame_cb);
wl_callback_destroy(callback);
input->cursor_frame_cb = NULL;
}
if (input->current_cursor == CURSOR_BLANK) {
wl_pointer_set_cursor(input->pointer,
input->pointer_enter_serial,
NULL, 0, 0);
return;
}
if (input->current_cursor == CURSOR_UNSET)
return;
cursor = input->display->cursors[input->current_cursor];
if (!cursor)
return;
/* FIXME We don't have the current time on the first call so we set
* the animation start to the time of the first frame callback. */
if (time == 0)
input->cursor_anim_start = 0;
else if (input->cursor_anim_start == 0)
input->cursor_anim_start = time;
if (time == 0 || input->cursor_anim_start == 0)
i = 0;
else
i = wl_cursor_frame(cursor, time - input->cursor_anim_start);
input_set_pointer_image_index(input, i);
if (cursor->image_count == 1)
return;
input->cursor_frame_cb = wl_surface_frame(input->pointer_surface);
wl_callback_add_listener(input->cursor_frame_cb,
&pointer_surface_listener, input);
}
static const struct wl_callback_listener pointer_surface_listener = {
pointer_surface_frame_callback
};
void
input_set_pointer_image(struct input *input, int pointer)
{
int force = 0;
if (input->pointer_enter_serial > input->cursor_serial)
force = 1;
if (!force && pointer == input->current_cursor)
return;
input->current_cursor = pointer;
input->cursor_serial = input->pointer_enter_serial;
if (!input->cursor_frame_cb)
pointer_surface_frame_callback(input, NULL, 0);
else if (force) {
/* The current frame callback may be stuck if, for instance,
* the set cursor request was processed by the server after
* this client lost the focus. In this case the cursor surface
* might not be mapped and the frame callback wouldn't ever
* complete. Send a set_cursor and attach to try to map the
* cursor surface again so that the callback will finish */
input_set_pointer_image_index(input, 0);
}
}
struct wl_data_device *
input_get_data_device(struct input *input)
{
return input->data_device;
}
void
input_set_selection(struct input *input,
struct wl_data_source *source, uint32_t time)
{
wl_data_device_set_selection(input->data_device, source, time);
}
void
input_accept(struct input *input, const char *type)
{
wl_data_offer_accept(input->drag_offer->offer,
input->pointer_enter_serial, type);
}
static void
offer_io_func(struct task *task, uint32_t events)
{
struct data_offer *offer =
container_of(task, struct data_offer, io_task);
unsigned int len;
char buffer[4096];
len = read(offer->fd, buffer, sizeof buffer);
offer->func(buffer, len,
offer->x, offer->y, offer->user_data);
if (len == 0) {
close(offer->fd);
data_offer_destroy(offer);
}
}
static void
data_offer_receive_data(struct data_offer *offer, const char *mime_type,
data_func_t func, void *user_data)
{
int p[2];
if (pipe2(p, O_CLOEXEC) == -1)
return;
wl_data_offer_receive(offer->offer, mime_type, p[1]);
close(p[1]);
offer->io_task.run = offer_io_func;
offer->fd = p[0];
offer->func = func;
offer->refcount++;
offer->user_data = user_data;
display_watch_fd(offer->input->display,
offer->fd, EPOLLIN, &offer->io_task);
}
void
input_receive_drag_data(struct input *input, const char *mime_type,
data_func_t func, void *data)
{
data_offer_receive_data(input->drag_offer, mime_type, func, data);
input->drag_offer->x = input->sx;
input->drag_offer->y = input->sy;
}
int
input_receive_selection_data(struct input *input, const char *mime_type,
data_func_t func, void *data)
{
char **p;
if (input->selection_offer == NULL)
return -1;
for (p = input->selection_offer->types.data; *p; p++)
if (strcmp(mime_type, *p) == 0)
break;
if (*p == NULL)
return -1;
data_offer_receive_data(input->selection_offer,
mime_type, func, data);
return 0;
}
int
input_receive_selection_data_to_fd(struct input *input,
const char *mime_type, int fd)
{
if (input->selection_offer)
wl_data_offer_receive(input->selection_offer->offer,
mime_type, fd);
return 0;
}
void
window_move(struct window *window, struct input *input, uint32_t serial)
{
if (!window->shell_surface)
return;
wl_shell_surface_move(window->shell_surface, input->seat, serial);
}
static void
idle_resize(struct window *window)
{
struct widget *widget;
window->resize_needed = 0;
widget = window->widget;
widget_set_allocation(widget,
window->pending_allocation.x,
window->pending_allocation.y,
window->pending_allocation.width,
window->pending_allocation.height);
if (window->input_region) {
wl_region_destroy(window->input_region);
window->input_region = NULL;
}
if (window->opaque_region) {
wl_region_destroy(window->opaque_region);
window->opaque_region = NULL;
}
if (widget->resize_handler)
widget->resize_handler(widget,
widget->allocation.width,
widget->allocation.height,
widget->user_data);
if (window->allocation.width != widget->allocation.width ||
window->allocation.height != widget->allocation.height) {
window->allocation = widget->allocation;
window_schedule_redraw(window);
}
}
void
window_schedule_resize(struct window *window, int width, int height)
{
window->pending_allocation.x = 0;
window->pending_allocation.y = 0;
window->pending_allocation.width = width;
window->pending_allocation.height = height;
if (window->min_allocation.width == 0)
window->min_allocation = window->pending_allocation;
if (window->pending_allocation.width < window->min_allocation.width)
window->pending_allocation.width = window->min_allocation.width;
if (window->pending_allocation.height < window->min_allocation.height)
window->pending_allocation.height = window->min_allocation.height;
window->resize_needed = 1;
window_schedule_redraw(window);
}
void
widget_schedule_resize(struct widget *widget, int32_t width, int32_t height)
{
window_schedule_resize(widget->window, width, height);
}
static void
handle_ping(void *data, struct wl_shell_surface *shell_surface,
uint32_t serial)
{
wl_shell_surface_pong(shell_surface, serial);
}
static void
handle_configure(void *data, struct wl_shell_surface *shell_surface,
uint32_t edges, int32_t width, int32_t height)
{
struct window *window = data;
window->resize_edges = edges;
window_schedule_resize(window, width, height);
}
static void
menu_destroy(struct menu *menu)
{
widget_destroy(menu->widget);
window_destroy(menu->window);
free(menu);
}
static void
handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
{
struct window *window = data;
struct menu *menu = window->widget->user_data;
/* FIXME: Need more context in this event, at least the input
* device. Or just use wl_callback. And this really needs to
* be a window vfunc that the menu can set. And we need the
* time. */
menu->func(window->parent, menu->current, window->parent->user_data);
input_ungrab(menu->input);
menu_destroy(menu);
}
static const struct wl_shell_surface_listener shell_surface_listener = {
handle_ping,
handle_configure,
handle_popup_done
};
void
window_get_allocation(struct window *window,
struct rectangle *allocation)
{
*allocation = window->allocation;
}
static void
widget_redraw(struct widget *widget)
{
struct widget *child;
if (widget->redraw_handler)
widget->redraw_handler(widget, widget->user_data);
wl_list_for_each(child, &widget->child_list, link)
widget_redraw(child);
}
static void
frame_callback(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
assert(callback == window->frame_cb);
wl_callback_destroy(callback);
window->frame_cb = 0;
window->redraw_scheduled = 0;
if (window->redraw_needed)
window_schedule_redraw(window);
}
static const struct wl_callback_listener listener = {
frame_callback
};
static void
idle_redraw(struct task *task, uint32_t events)
{
struct window *window = container_of(task, struct window, redraw_task);
if (window->resize_needed)
idle_resize(window);
window_create_surface(window);
widget_redraw(window->widget);
window_flush(window);
window->redraw_needed = 0;
wl_list_init(&window->redraw_task.link);
window->frame_cb = wl_surface_frame(window->surface);
wl_callback_add_listener(window->frame_cb, &listener, window);
}
void
window_schedule_redraw(struct window *window)
{
window->redraw_needed = 1;
if (!window->redraw_scheduled) {
window->redraw_task.run = idle_redraw;
display_defer(window->display, &window->redraw_task);
window->redraw_scheduled = 1;
}
}
int
window_is_fullscreen(struct window *window)
{
return window->type == TYPE_FULLSCREEN;
}
void
window_set_fullscreen(struct window *window, int fullscreen)
{
if (!window->display->shell)
return;
if ((window->type == TYPE_FULLSCREEN) == fullscreen)
return;
if (fullscreen) {
window->type = TYPE_FULLSCREEN;
window->saved_allocation = window->allocation;
wl_shell_surface_set_fullscreen(window->shell_surface,
WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
0, NULL);
} else {
window->type = TYPE_TOPLEVEL;
wl_shell_surface_set_toplevel(window->shell_surface);
window_schedule_resize(window,
window->saved_allocation.width,
window->saved_allocation.height);
}
}
int
window_is_maximized(struct window *window)
{
return window->type == TYPE_MAXIMIZED;
}
void
window_set_maximized(struct window *window, int maximized)
{
if (!window->display->shell)
return;
if ((window->type == TYPE_MAXIMIZED) == maximized)
return;
if (window->type == TYPE_TOPLEVEL) {
window->saved_allocation = window->allocation;
wl_shell_surface_set_maximized(window->shell_surface, NULL);
window->type = TYPE_MAXIMIZED;
} else {
wl_shell_surface_set_toplevel(window->shell_surface);
window->type = TYPE_TOPLEVEL;
window_schedule_resize(window,
window->saved_allocation.width,
window->saved_allocation.height);
}
}
void
window_set_user_data(struct window *window, void *data)
{
window->user_data = data;
}
void *
window_get_user_data(struct window *window)
{
return window->user_data;
}
void
window_set_key_handler(struct window *window,
window_key_handler_t handler)
{
window->key_handler = handler;
}
void
window_set_keyboard_focus_handler(struct window *window,
window_keyboard_focus_handler_t handler)
{
window->keyboard_focus_handler = handler;
}
void
window_set_data_handler(struct window *window, window_data_handler_t handler)
{
window->data_handler = handler;
}
void
window_set_drop_handler(struct window *window, window_drop_handler_t handler)
{
window->drop_handler = handler;
}
void
window_set_close_handler(struct window *window,
window_close_handler_t handler)
{
window->close_handler = handler;
}
void
window_set_fullscreen_handler(struct window *window,
window_fullscreen_handler_t handler)
{
window->fullscreen_handler = handler;
}
void
window_set_title(struct window *window, const char *title)
{
free(window->title);
window->title = strdup(title);
if (window->shell_surface)
wl_shell_surface_set_title(window->shell_surface, title);
}
const char *
window_get_title(struct window *window)
{
return window->title;
}
void
window_set_text_cursor_position(struct window *window, int32_t x, int32_t y)
{
struct text_cursor_position *text_cursor_position =
window->display->text_cursor_position;
if (!text_cursor_position)
return;
text_cursor_position_notify(text_cursor_position,
window->surface,
wl_fixed_from_int(x),
wl_fixed_from_int(y));
}
void
window_damage(struct window *window, int32_t x, int32_t y,
int32_t width, int32_t height)
{
wl_surface_damage(window->surface, x, y, width, height);
}
static void
surface_enter(void *data,
struct wl_surface *wl_surface, struct wl_output *wl_output)
{
struct window *window = data;
struct output *output;
struct output *output_found = NULL;
struct window_output *window_output;
wl_list_for_each(output, &window->display->output_list, link) {
if (output->output == wl_output) {
output_found = output;
break;
}
}
if (!output_found)
return;
window_output = malloc (sizeof *window_output);
window_output->output = output_found;
wl_list_insert (&window->window_output_list, &window_output->link);
}
static void
surface_leave(void *data,
struct wl_surface *wl_surface, struct wl_output *output)
{
struct window *window = data;
struct window_output *window_output;
struct window_output *window_output_found = NULL;
wl_list_for_each(window_output, &window->window_output_list, link) {
if (window_output->output->output == output) {
window_output_found = window_output;
break;
}
}
if (window_output_found) {
wl_list_remove(&window_output_found->link);
free(window_output_found);
}
}
static const struct wl_surface_listener surface_listener = {
surface_enter,
surface_leave
};
static struct window *
window_create_internal(struct display *display,
struct window *parent, int type)
{
struct window *window;
window = malloc(sizeof *window);
if (window == NULL)
return NULL;
memset(window, 0, sizeof *window);
window->display = display;
window->parent = parent;
window->surface = wl_compositor_create_surface(display->compositor);
wl_surface_add_listener(window->surface, &surface_listener, window);
if (type != TYPE_CUSTOM && display->shell) {
window->shell_surface =
wl_shell_get_shell_surface(display->shell,
window->surface);
}
window->allocation.x = 0;
window->allocation.y = 0;
window->allocation.width = 0;
window->allocation.height = 0;
window->saved_allocation = window->allocation;
window->transparent = 1;
window->type = type;
window->input_region = NULL;
window->opaque_region = NULL;
if (display->dpy)
#ifdef HAVE_CAIRO_EGL
window->buffer_type = WINDOW_BUFFER_TYPE_EGL_WINDOW;
#else
window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
#endif
else
window->buffer_type = WINDOW_BUFFER_TYPE_SHM;
wl_surface_set_user_data(window->surface, window);
wl_list_insert(display->window_list.prev, &window->link);
wl_list_init(&window->redraw_task.link);
if (window->shell_surface) {
wl_shell_surface_set_user_data(window->shell_surface, window);
wl_shell_surface_add_listener(window->shell_surface,
&shell_surface_listener, window);
}
wl_list_init (&window->window_output_list);
return window;
}
struct window *
window_create(struct display *display)
{
struct window *window;
window = window_create_internal(display, NULL, TYPE_NONE);
if (!window)
return NULL;
return window;
}
struct window *
window_create_custom(struct display *display)
{
struct window *window;
window = window_create_internal(display, NULL, TYPE_CUSTOM);
if (!window)
return NULL;
return window;
}
struct window *
window_create_transient(struct display *display, struct window *parent,
int32_t x, int32_t y, uint32_t flags)
{
struct window *window;
window = window_create_internal(parent->display,
parent, TYPE_TRANSIENT);
if (!window)
return NULL;
window->x = x;
window->y = y;
if (display->shell)
wl_shell_surface_set_transient(window->shell_surface,
window->parent->surface,
window->x, window->y, flags);
return window;
}
static void
menu_set_item(struct menu *menu, int sy)
{
int next;
next = (sy - 8) / 20;
if (menu->current != next) {
menu->current = next;
widget_schedule_redraw(menu->widget);
}
}
static int
menu_motion_handler(struct widget *widget,
struct input *input, uint32_t time,
float x, float y, void *data)
{
struct menu *menu = data;
if (widget == menu->widget)
menu_set_item(data, y);
return CURSOR_LEFT_PTR;
}
static int
menu_enter_handler(struct widget *widget,
struct input *input, float x, float y, void *data)
{
struct menu *menu = data;
if (widget == menu->widget)
menu_set_item(data, y);
return CURSOR_LEFT_PTR;
}
static void
menu_leave_handler(struct widget *widget, struct input *input, void *data)
{
struct menu *menu = data;
if (widget == menu->widget)
menu_set_item(data, -200);
}
static void
menu_button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button, enum wl_pointer_button_state state,
void *data)
{
struct menu *menu = data;
if (state == WL_POINTER_BUTTON_STATE_PRESSED &&
time - menu->time > 500) {
/* Either relase after press-drag-release or
* click-motion-click. */
menu->func(menu->window->parent,
menu->current, menu->window->parent->user_data);
input_ungrab(input);
menu_destroy(menu);
}
}
static void
menu_redraw_handler(struct widget *widget, void *data)
{
cairo_t *cr;
const int32_t r = 3, margin = 3;
struct menu *menu = data;
int32_t width, height, i;
struct window *window = widget->window;
cr = cairo_create(window->cairo_surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
cairo_paint(cr);
width = window->allocation.width;
height = window->allocation.height;
rounded_rect(cr, 0, 0, width, height, r);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0.0, 0.0, 0.4, 0.8);
cairo_fill(cr);
for (i = 0; i < menu->count; i++) {
if (i == menu->current) {
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
cairo_rectangle(cr, margin, i * 20 + margin,
width - 2 * margin, 20);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
cairo_move_to(cr, 10, i * 20 + 16);
cairo_show_text(cr, menu->entries[i]);
} else {
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
cairo_move_to(cr, 10, i * 20 + 16);
cairo_show_text(cr, menu->entries[i]);
}
}
cairo_destroy(cr);
}
void
window_show_menu(struct display *display,
struct input *input, uint32_t time, struct window *parent,
int32_t x, int32_t y,
menu_func_t func, const char **entries, int count)
{
struct window *window;
struct menu *menu;
const int32_t margin = 3;
menu = malloc(sizeof *menu);
if (!menu)
return;
window = window_create_internal(parent->display, parent, TYPE_MENU);
if (!window) {
free(menu);
return;
}
menu->window = window;
menu->widget = window_add_widget(menu->window, menu);
menu->entries = entries;
menu->count = count;
menu->current = -1;
menu->time = time;
menu->func = func;
menu->input = input;
window->type = TYPE_MENU;
window->x = x;
window->y = y;
input_ungrab(input);
wl_shell_surface_set_popup(window->shell_surface, input->seat,
display_get_serial(window->display),
window->parent->surface,
window->x, window->y, 0);
widget_set_redraw_handler(menu->widget, menu_redraw_handler);
widget_set_enter_handler(menu->widget, menu_enter_handler);
widget_set_leave_handler(menu->widget, menu_leave_handler);
widget_set_motion_handler(menu->widget, menu_motion_handler);
widget_set_button_handler(menu->widget, menu_button_handler);
input_grab(input, menu->widget, 0);
window_schedule_resize(window, 200, count * 20 + margin * 2);
}
void
window_set_buffer_type(struct window *window, enum window_buffer_type type)
{
window->buffer_type = type;
}
static void
display_handle_geometry(void *data,
struct wl_output *wl_output,
int x, int y,
int physical_width,
int physical_height,
int subpixel,
const char *make,
const char *model,
int transform)
{
struct output *output = data;
output->allocation.x = x;
output->allocation.y = y;
}
static void
display_handle_mode(void *data,
struct wl_output *wl_output,
uint32_t flags,
int width,
int height,
int refresh)
{
struct output *output = data;
struct display *display = output->display;
if (flags & WL_OUTPUT_MODE_CURRENT) {
output->allocation.width = width;
output->allocation.height = height;
if (display->output_configure_handler)
(*display->output_configure_handler)(
output, display->user_data);
}
}
static const struct wl_output_listener output_listener = {
display_handle_geometry,
display_handle_mode
};
static void
display_add_output(struct display *d, uint32_t id)
{
struct output *output;
output = malloc(sizeof *output);
if (output == NULL)
return;
memset(output, 0, sizeof *output);
output->display = d;
output->output =
wl_display_bind(d->display, id, &wl_output_interface);
wl_list_insert(d->output_list.prev, &output->link);
wl_output_add_listener(output->output, &output_listener, output);
}
static void
output_destroy(struct output *output)
{
if (output->destroy_handler)
(*output->destroy_handler)(output, output->user_data);
wl_output_destroy(output->output);
wl_list_remove(&output->link);
free(output);
}
void
display_set_output_configure_handler(struct display *display,
display_output_handler_t handler)
{
struct output *output;
display->output_configure_handler = handler;
if (!handler)
return;
wl_list_for_each(output, &display->output_list, link)
(*display->output_configure_handler)(output,
display->user_data);
}
void
output_set_user_data(struct output *output, void *data)
{
output->user_data = data;
}
void *
output_get_user_data(struct output *output)
{
return output->user_data;
}
void
output_set_destroy_handler(struct output *output,
display_output_handler_t handler)
{
output->destroy_handler = handler;
/* FIXME: implement this, once we have way to remove outputs */
}
void
output_get_allocation(struct output *output, struct rectangle *allocation)
{
*allocation = output->allocation;
}
struct wl_output *
output_get_wl_output(struct output *output)
{
return output->output;
}
static void
fini_xkb(struct input *input)
{
xkb_state_unref(input->xkb.state);
xkb_map_unref(input->xkb.keymap);
}
static void
display_add_input(struct display *d, uint32_t id)
{
struct input *input;
input = malloc(sizeof *input);
if (input == NULL)
return;
memset(input, 0, sizeof *input);
input->display = d;
input->seat = wl_display_bind(d->display, id, &wl_seat_interface);
input->pointer_focus = NULL;
input->keyboard_focus = NULL;
wl_list_insert(d->input_list.prev, &input->link);
wl_seat_add_listener(input->seat, &seat_listener, input);
wl_seat_set_user_data(input->seat, input);
input->data_device =
wl_data_device_manager_get_data_device(d->data_device_manager,
input->seat);
wl_data_device_add_listener(input->data_device, &data_device_listener,
input);
input->pointer_surface = wl_compositor_create_surface(d->compositor);
input->repeat_timer_fd = timerfd_create(CLOCK_MONOTONIC,
TFD_CLOEXEC | TFD_NONBLOCK);
input->repeat_task.run = keyboard_repeat_func;
display_watch_fd(d, input->repeat_timer_fd,
EPOLLIN, &input->repeat_task);
}
static void
input_destroy(struct input *input)
{
input_remove_keyboard_focus(input);
input_remove_pointer_focus(input);
if (input->drag_offer)
data_offer_destroy(input->drag_offer);
if (input->selection_offer)
data_offer_destroy(input->selection_offer);
wl_data_device_destroy(input->data_device);
fini_xkb(input);
wl_surface_destroy(input->pointer_surface);
wl_list_remove(&input->link);
wl_seat_destroy(input->seat);
close(input->repeat_timer_fd);
free(input);
}
static void
init_workspace_manager(struct display *d, uint32_t id)
{
d->workspace_manager =
wl_display_bind(d->display, id, &workspace_manager_interface);
if (d->workspace_manager != NULL)
workspace_manager_add_listener(d->workspace_manager,
&workspace_manager_listener,
d);
}
static void
display_handle_global(struct wl_display *display, uint32_t id,
const char *interface, uint32_t version, void *data)
{
struct display *d = data;
if (strcmp(interface, "wl_compositor") == 0) {
d->compositor =
wl_display_bind(display, id, &wl_compositor_interface);
} else if (strcmp(interface, "wl_output") == 0) {
display_add_output(d, id);
} else if (strcmp(interface, "wl_seat") == 0) {
display_add_input(d, id);
} else if (strcmp(interface, "wl_shell") == 0) {
d->shell = wl_display_bind(display, id, &wl_shell_interface);
} else if (strcmp(interface, "wl_shm") == 0) {
d->shm = wl_display_bind(display, id, &wl_shm_interface);
} else if (strcmp(interface, "wl_data_device_manager") == 0) {
d->data_device_manager =
wl_display_bind(display, id,
&wl_data_device_manager_interface);
} else if (strcmp(interface, "text_cursor_position") == 0) {
d->text_cursor_position =
wl_display_bind(display, id,
&text_cursor_position_interface);
} else if (strcmp(interface, "workspace_manager") == 0) {
init_workspace_manager(d, id);
}
}
#ifdef HAVE_CAIRO_EGL
static int
init_egl(struct display *d)
{
EGLint major, minor;
EGLint n;
#ifdef USE_CAIRO_GLESV2
# define GL_BIT EGL_OPENGL_ES2_BIT
#else
# define GL_BIT EGL_OPENGL_BIT
#endif
static const EGLint argb_cfg_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PIXMAP_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 1,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, GL_BIT,
EGL_NONE
};
#ifdef USE_CAIRO_GLESV2
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
EGLint api = EGL_OPENGL_ES_API;
#else
EGLint *context_attribs = NULL;
EGLint api = EGL_OPENGL_API;
#endif
d->dpy = eglGetDisplay(d->display);
if (!eglInitialize(d->dpy, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return -1;
}
if (!eglBindAPI(api)) {
fprintf(stderr, "failed to bind api EGL_OPENGL_API\n");
return -1;
}
if (!eglChooseConfig(d->dpy, argb_cfg_attribs,
&d->argb_config, 1, &n) || n != 1) {
fprintf(stderr, "failed to choose argb config\n");
return -1;
}
d->argb_ctx = eglCreateContext(d->dpy, d->argb_config,
EGL_NO_CONTEXT, context_attribs);
if (d->argb_ctx == NULL) {
fprintf(stderr, "failed to create context\n");
return -1;
}
if (!eglMakeCurrent(d->dpy, NULL, NULL, d->argb_ctx)) {
fprintf(stderr, "failed to make context current\n");
return -1;
}
#ifdef HAVE_CAIRO_EGL
d->argb_device = cairo_egl_device_create(d->dpy, d->argb_ctx);
if (cairo_device_status(d->argb_device) != CAIRO_STATUS_SUCCESS) {
fprintf(stderr, "failed to get cairo egl argb device\n");
return -1;
}
#endif
return 0;
}
static void
fini_egl(struct display *display)
{
#ifdef HAVE_CAIRO_EGL
cairo_device_destroy(display->argb_device);
#endif
eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglTerminate(display->dpy);
eglReleaseThread();
}
#endif
static int
event_mask_update(uint32_t mask, void *data)
{
struct display *d = data;
d->mask = mask;
return 0;
}
static void
handle_display_data(struct task *task, uint32_t events)
{
struct display *display =
container_of(task, struct display, display_task);
display->display_fd_events = events;
if (events & EPOLLERR || events & EPOLLHUP) {
display_exit(display);
return;
}
wl_display_iterate(display->display, display->mask);
}
struct display *
display_create(int argc, char *argv[])
{
struct display *d;
d = malloc(sizeof *d);
if (d == NULL)
return NULL;
memset(d, 0, sizeof *d);
d->display = wl_display_connect(NULL);
if (d->display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return NULL;
}
d->epoll_fd = os_epoll_create_cloexec();
d->display_fd = wl_display_get_fd(d->display, event_mask_update, d);
d->display_task.run = handle_display_data;
display_watch_fd(d, d->display_fd, EPOLLIN | EPOLLERR | EPOLLHUP,
&d->display_task);
wl_list_init(&d->deferred_list);
wl_list_init(&d->input_list);
wl_list_init(&d->output_list);
d->xkb_context = xkb_context_new(0);
if (d->xkb_context == NULL) {
fprintf(stderr, "Failed to create XKB context\n");
return NULL;
}
d->workspace = 0;
d->workspace_count = 1;
/* Set up listener so we'll catch all events. */
wl_display_add_global_listener(d->display,
display_handle_global, d);
/* Process connection events. */
wl_display_iterate(d->display, WL_DISPLAY_READABLE);
#ifdef HAVE_CAIRO_EGL
if (init_egl(d) < 0)
return NULL;
#endif
d->image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
d->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
d->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
create_cursors(d);
d->theme = theme_create();
wl_list_init(&d->window_list);
return d;
}
static void
display_destroy_outputs(struct display *display)
{
struct output *tmp;
struct output *output;
wl_list_for_each_safe(output, tmp, &display->output_list, link)
output_destroy(output);
}
static void
display_destroy_inputs(struct display *display)
{
struct input *tmp;
struct input *input;
wl_list_for_each_safe(input, tmp, &display->input_list, link)
input_destroy(input);
}
void
display_destroy(struct display *display)
{
if (!wl_list_empty(&display->window_list))
fprintf(stderr, "toytoolkit warning: %d windows exist.\n",
wl_list_length(&display->window_list));
if (!wl_list_empty(&display->deferred_list))
fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
display_destroy_outputs(display);
display_destroy_inputs(display);
xkb_context_unref(display->xkb_context);
theme_destroy(display->theme);
destroy_cursors(display);
#ifdef HAVE_CAIRO_EGL
fini_egl(display);
#endif
if (display->shell)
wl_shell_destroy(display->shell);
if (display->shm)
wl_shm_destroy(display->shm);
if (display->data_device_manager)
wl_data_device_manager_destroy(display->data_device_manager);
wl_compositor_destroy(display->compositor);
close(display->epoll_fd);
if (!(display->display_fd_events & EPOLLERR) &&
!(display->display_fd_events & EPOLLHUP))
wl_display_flush(display->display);
wl_display_disconnect(display->display);
free(display);
}
void
display_set_user_data(struct display *display, void *data)
{
display->user_data = data;
}
void *
display_get_user_data(struct display *display)
{
return display->user_data;
}
struct wl_display *
display_get_display(struct display *display)
{
return display->display;
}
struct output *
display_get_output(struct display *display)
{
return container_of(display->output_list.next, struct output, link);
}
struct wl_compositor *
display_get_compositor(struct display *display)
{
return display->compositor;
}
uint32_t
display_get_serial(struct display *display)
{
return display->serial;
}
EGLDisplay
display_get_egl_display(struct display *d)
{
return d->dpy;
}
struct wl_data_source *
display_create_data_source(struct display *display)
{
return wl_data_device_manager_create_data_source(display->data_device_manager);
}
EGLConfig
display_get_argb_egl_config(struct display *d)
{
return d->argb_config;
}
struct wl_shell *
display_get_shell(struct display *display)
{
return display->shell;
}
int
display_acquire_window_surface(struct display *display,
struct window *window,
EGLContext ctx)
{
#ifdef HAVE_CAIRO_EGL
struct egl_window_surface_data *data;
cairo_device_t *device;
if (!window->cairo_surface)
return -1;
device = cairo_surface_get_device(window->cairo_surface);
if (!device)
return -1;
if (!ctx) {
if (device == display->argb_device)
ctx = display->argb_ctx;
else
assert(0);
}
data = cairo_surface_get_user_data(window->cairo_surface,
&surface_data_key);
cairo_device_flush(device);
cairo_device_acquire(device);
if (!eglMakeCurrent(display->dpy, data->surf, data->surf, ctx))
fprintf(stderr, "failed to make surface current\n");
return 0;
#else
return -1;
#endif
}
void
display_release_window_surface(struct display *display,
struct window *window)
{
#ifdef HAVE_CAIRO_EGL
cairo_device_t *device;
device = cairo_surface_get_device(window->cairo_surface);
if (!device)
return;
if (!eglMakeCurrent(display->dpy, NULL, NULL, display->argb_ctx))
fprintf(stderr, "failed to make context current\n");
cairo_device_release(device);
#endif
}
void
display_defer(struct display *display, struct task *task)
{
wl_list_insert(&display->deferred_list, &task->link);
}
void
display_watch_fd(struct display *display,
int fd, uint32_t events, struct task *task)
{
struct epoll_event ep;
ep.events = events;
ep.data.ptr = task;
epoll_ctl(display->epoll_fd, EPOLL_CTL_ADD, fd, &ep);
}
void
display_run(struct display *display)
{
struct task *task;
struct epoll_event ep[16];
int i, count;
display->running = 1;
while (1) {
wl_display_flush(display->display);
while (!wl_list_empty(&display->deferred_list)) {
task = container_of(display->deferred_list.prev,
struct task, link);
wl_list_remove(&task->link);
task->run(task, 0);
}
if (!display->running)
break;
wl_display_flush(display->display);
count = epoll_wait(display->epoll_fd,
ep, ARRAY_LENGTH(ep), -1);
for (i = 0; i < count; i++) {
task = ep[i].data.ptr;
task->run(task, ep[i].events);
}
}
}
void
display_exit(struct display *display)
{
display->running = 0;
}