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weston/clients/window.c

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/*
* 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 <glib.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <sys/mman.h>
#include <sys/epoll.h>
#include <wayland-egl.h>
#include <GL/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#ifdef HAVE_CAIRO_EGL
#include <cairo-gl.h>
#endif
#include <X11/extensions/XKBcommon.h>
#include <linux/input.h>
#include <wayland-client.h>
#include "cairo-util.h"
#include "window.h"
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;
EGLDisplay dpy;
EGLConfig rgb_config;
EGLConfig premultiplied_argb_config;
EGLContext rgb_ctx;
EGLContext argb_ctx;
cairo_device_t *rgb_device;
cairo_device_t *argb_device;
int display_fd;
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;
cairo_surface_t *active_frame, *inactive_frame, *shadow;
struct xkb_desc *xkb;
cairo_surface_t **pointer_surfaces;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
PFNEGLCREATEIMAGEKHRPROC create_image;
PFNEGLDESTROYIMAGEKHRPROC destroy_image;
display_output_handler_t output_configure_handler;
void *user_data;
};
enum {
TYPE_TOPLEVEL,
TYPE_FULLSCREEN,
TYPE_TRANSIENT,
TYPE_MENU,
TYPE_CUSTOM
};
struct window {
struct display *display;
struct window *parent;
struct widget *widget;
struct wl_surface *surface;
struct wl_shell_surface *shell_surface;
char *title;
struct rectangle allocation, saved_allocation, server_allocation;
int x, y;
int resize_edges;
int redraw_scheduled;
struct task redraw_task;
int minimum_width, minimum_height;
int margin;
int type;
int decoration;
int transparent;
struct input *keyboard_device;
uint32_t name;
enum window_buffer_type buffer_type;
cairo_surface_t *cairo_surface, *pending_surface;
window_resize_handler_t resize_handler;
window_redraw_handler_t redraw_handler;
window_key_handler_t key_handler;
window_button_handler_t button_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;
struct wl_list widget_list;
struct widget *focus_widget;
uint32_t widget_grab_button;
struct window *menu;
void *user_data;
struct wl_list link;
};
struct widget {
struct window *window;
struct wl_list link;
struct rectangle allocation;
widget_enter_handler_t enter_handler;
widget_leave_handler_t leave_handler;
widget_motion_handler_t motion_handler;
void *user_data;
};
struct input {
struct display *display;
struct wl_input_device *input_device;
struct window *pointer_focus;
struct window *keyboard_focus;
uint32_t current_pointer_image;
uint32_t modifiers;
int32_t x, y, sx, sy;
struct wl_list link;
struct wl_data_device *data_device;
struct data_offer *drag_offer;
struct data_offer *selection_offer;
};
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;
};
struct menu {
struct window *window;
const char **entries;
uint32_t time;
int current;
int count;
menu_func_t func;
};
enum {
POINTER_DEFAULT = 100,
POINTER_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,
};
const char *option_xkb_layout = "us";
const char *option_xkb_variant = "";
const char *option_xkb_options = "";
static const GOptionEntry xkb_option_entries[] = {
{ "xkb-layout", 0, 0, G_OPTION_ARG_STRING,
&option_xkb_layout, "XKB Layout" },
{ "xkb-variant", 0, 0, G_OPTION_ARG_STRING,
&option_xkb_variant, "XKB Variant" },
{ "xkb-options", 0, 0, G_OPTION_ARG_STRING,
&option_xkb_options, "XKB Options" },
{ NULL }
};
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;
const EGLint *attribs;
cairo_device_t *device;
static const EGLint premul_attribs[] = {
EGL_ALPHA_FORMAT, EGL_ALPHA_FORMAT_PRE,
EGL_NONE
};
data = malloc(sizeof *data);
if (data == NULL)
return NULL;
data->display = display;
data->surface = surface;
if (flags & SURFACE_OPAQUE) {
config = display->rgb_config;
device = display->rgb_device;
attribs = NULL;
} else {
config = display->premultiplied_argb_config;
device = display->argb_device;
attribs = premul_attribs;
}
data->window = wl_egl_window_create(surface,
rectangle->width,
rectangle->height);
data->surf = eglCreateWindowSurface(display->dpy, config,
data->window, attribs);
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;
}
struct egl_image_surface_data {
struct surface_data data;
cairo_device_t *device;
EGLImageKHR image;
GLuint texture;
struct display *display;
struct wl_egl_pixmap *pixmap;
};
static void
egl_image_surface_data_destroy(void *p)
{
struct egl_image_surface_data *data = p;
struct display *d = data->display;
cairo_device_acquire(data->device);
glDeleteTextures(1, &data->texture);
cairo_device_release(data->device);
d->destroy_image(d->dpy, data->image);
wl_buffer_destroy(data->data.buffer);
wl_egl_pixmap_destroy(data->pixmap);
free(p);
}
EGLImageKHR
display_get_image_for_egl_image_surface(struct display *display,
cairo_surface_t *surface)
{
struct egl_image_surface_data *data;
data = cairo_surface_get_user_data (surface, &surface_data_key);
return data->image;
}
static cairo_surface_t *
display_create_egl_image_surface(struct display *display,
uint32_t flags,
struct rectangle *rectangle)
{
struct egl_image_surface_data *data;
EGLDisplay dpy = display->dpy;
cairo_surface_t *surface;
cairo_content_t content;
data = malloc(sizeof *data);
if (data == NULL)
return NULL;
data->display = display;
data->pixmap = wl_egl_pixmap_create(rectangle->width,
rectangle->height, 0);
if (data->pixmap == NULL) {
free(data);
return NULL;
}
if (flags & SURFACE_OPAQUE) {
data->device = display->rgb_device;
content = CAIRO_CONTENT_COLOR;
} else {
data->device = display->argb_device;
content = CAIRO_CONTENT_COLOR_ALPHA;
}
data->image = display->create_image(dpy, NULL,
EGL_NATIVE_PIXMAP_KHR,
(EGLClientBuffer) data->pixmap,
NULL);
if (data->image == EGL_NO_IMAGE_KHR) {
wl_egl_pixmap_destroy(data->pixmap);
free(data);
return NULL;
}
data->data.buffer =
wl_egl_pixmap_create_buffer(data->pixmap);
cairo_device_acquire(data->device);
glGenTextures(1, &data->texture);
glBindTexture(GL_TEXTURE_2D, data->texture);
display->image_target_texture_2d(GL_TEXTURE_2D, data->image);
cairo_device_release(data->device);
surface = cairo_gl_surface_create_for_texture(data->device,
content,
data->texture,
rectangle->width,
rectangle->height);
cairo_surface_set_user_data (surface, &surface_data_key,
data, egl_image_surface_data_destroy);
return surface;
}
static cairo_surface_t *
display_create_egl_image_surface_from_file(struct display *display,
const char *filename,
struct rectangle *rect)
{
cairo_surface_t *surface;
GdkPixbuf *pixbuf;
GError *error = NULL;
int stride, i;
unsigned char *pixels, *p, *end;
struct egl_image_surface_data *data;
pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
rect->width, rect->height,
FALSE, &error);
if (error != NULL)
return NULL;
if (!gdk_pixbuf_get_has_alpha(pixbuf) ||
gdk_pixbuf_get_n_channels(pixbuf) != 4) {
g_object_unref(pixbuf);
return NULL;
}
stride = gdk_pixbuf_get_rowstride(pixbuf);
pixels = gdk_pixbuf_get_pixels(pixbuf);
for (i = 0; i < rect->height; i++) {
p = pixels + i * stride;
end = p + rect->width * 4;
while (p < end) {
unsigned int t;
MULT(p[0], p[0], p[3], t);
MULT(p[1], p[1], p[3], t);
MULT(p[2], p[2], p[3], t);
p += 4;
}
}
surface = display_create_egl_image_surface(display, 0, rect);
if (surface == NULL) {
g_object_unref(pixbuf);
return NULL;
}
data = cairo_surface_get_user_data(surface, &surface_data_key);
cairo_device_acquire(display->argb_device);
glBindTexture(GL_TEXTURE_2D, data->texture);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, rect->width, rect->height,
GL_RGBA, GL_UNSIGNED_BYTE, pixels);
cairo_device_release(display->argb_device);
g_object_unref(pixbuf);
return 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;
void *map;
size_t length;
};
static void
shm_surface_data_destroy(void *p)
{
struct shm_surface_data *data = p;
wl_buffer_destroy(data->data.buffer);
munmap(data->map, data->length);
}
static cairo_surface_t *
display_create_shm_surface(struct display *display,
struct rectangle *rectangle, uint32_t flags)
{
struct shm_surface_data *data;
uint32_t format;
cairo_surface_t *surface;
int stride, fd;
char filename[] = "/tmp/wayland-shm-XXXXXX";
data = malloc(sizeof *data);
if (data == NULL)
return NULL;
stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32,
rectangle->width);
data->length = stride * rectangle->height;
fd = mkstemp(filename);
if (fd < 0) {
fprintf(stderr, "open %s failed: %m\n", filename);
return NULL;
}
if (ftruncate(fd, data->length) < 0) {
fprintf(stderr, "ftruncate failed: %m\n");
close(fd);
return NULL;
}
data->map = mmap(NULL, data->length,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unlink(filename);
if (data->map == MAP_FAILED) {
fprintf(stderr, "mmap failed: %m\n");
close(fd);
return NULL;
}
surface = cairo_image_surface_create_for_data (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_XRGB32;
else
format = WL_SHM_FORMAT_PREMULTIPLIED_ARGB32;
data->data.buffer = wl_shm_create_buffer(display->shm,
fd,
rectangle->width,
rectangle->height,
stride, format);
close(fd);
return surface;
}
static cairo_surface_t *
display_create_shm_surface_from_file(struct display *display,
const char *filename,
struct rectangle *rect)
{
cairo_surface_t *surface;
GdkPixbuf *pixbuf;
GError *error = NULL;
int stride, i;
unsigned char *pixels, *p, *end, *dest_data;
int dest_stride;
uint32_t *d;
pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
rect->width, rect->height,
FALSE, &error);
if (error != NULL)
return NULL;
if (!gdk_pixbuf_get_has_alpha(pixbuf) ||
gdk_pixbuf_get_n_channels(pixbuf) != 4) {
g_object_unref(pixbuf);
return NULL;
}
stride = gdk_pixbuf_get_rowstride(pixbuf);
pixels = gdk_pixbuf_get_pixels(pixbuf);
surface = display_create_shm_surface(display, rect, 0);
if (surface == NULL) {
g_object_unref(pixbuf);
return NULL;
}
dest_data = cairo_image_surface_get_data (surface);
dest_stride = cairo_image_surface_get_stride (surface);
for (i = 0; i < rect->height; i++) {
d = (uint32_t *) (dest_data + i * dest_stride);
p = pixels + i * stride;
end = p + rect->width * 4;
while (p < end) {
unsigned int t;
unsigned char a, r, g, b;
a = p[3];
MULT(r, p[0], a, t);
MULT(g, p[1], a, t);
MULT(b, p[2], a, t);
p += 4;
*d++ = (a << 24) | (r << 16) | (g << 8) | b;
}
}
g_object_unref(pixbuf);
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) {
if (surface)
return display_create_egl_window_surface(display,
surface,
flags,
rectangle);
else
return display_create_egl_image_surface(display,
flags,
rectangle);
}
#endif
return display_create_shm_surface(display, rectangle, flags);
}
static cairo_surface_t *
display_create_surface_from_file(struct display *display,
const char *filename,
struct rectangle *rectangle)
{
if (check_size(rectangle) < 0)
return NULL;
#ifdef HAVE_CAIRO_EGL
if (display->dpy) {
return display_create_egl_image_surface_from_file(display,
filename,
rectangle);
}
#endif
return display_create_shm_surface_from_file(display, filename, rectangle);
}
static const struct {
const char *filename;
int hotspot_x, hotspot_y;
} pointer_images[] = {
{ DATADIR "/weston/bottom_left_corner.png", 6, 30 },
{ DATADIR "/weston/bottom_right_corner.png", 28, 28 },
{ DATADIR "/weston/bottom_side.png", 16, 20 },
{ DATADIR "/weston/grabbing.png", 20, 17 },
{ DATADIR "/weston/left_ptr.png", 10, 5 },
{ DATADIR "/weston/left_side.png", 10, 20 },
{ DATADIR "/weston/right_side.png", 30, 19 },
{ DATADIR "/weston/top_left_corner.png", 8, 8 },
{ DATADIR "/weston/top_right_corner.png", 26, 8 },
{ DATADIR "/weston/top_side.png", 18, 8 },
{ DATADIR "/weston/xterm.png", 15, 15 },
{ DATADIR "/weston/hand1.png", 18, 11 }
};
static void
create_pointer_surfaces(struct display *display)
{
int i, count;
const int width = 32, height = 32;
struct rectangle rect;
count = ARRAY_LENGTH(pointer_images);
display->pointer_surfaces =
malloc(count * sizeof *display->pointer_surfaces);
rect.width = width;
rect.height = height;
for (i = 0; i < count; i++) {
display->pointer_surfaces[i] =
display_create_surface_from_file(display,
pointer_images[i].filename,
&rect);
if (!display->pointer_surfaces[i]) {
fprintf(stderr, "Error loading pointer image: %s\n",
pointer_images[i].filename);
}
}
}
static void
destroy_pointer_surfaces(struct display *display)
{
int i, count;
count = ARRAY_LENGTH(pointer_images);
for (i = 0; i < count; ++i) {
if (display->pointer_surfaces[i])
cairo_surface_destroy(display->pointer_surfaces[i]);
}
free(display->pointer_surfaces);
}
cairo_surface_t *
display_get_pointer_surface(struct display *display, int pointer,
int *width, int *height,
int *hotspot_x, int *hotspot_y)
{
cairo_surface_t *surface;
surface = display->pointer_surfaces[pointer];
#if HAVE_CAIRO_EGL
*width = cairo_gl_surface_get_width(surface);
*height = cairo_gl_surface_get_height(surface);
#else
*width = cairo_image_surface_get_width(surface);
*height = cairo_image_surface_get_height(surface);
#endif
*hotspot_x = pointer_images[pointer].hotspot_x;
*hotspot_y = pointer_images[pointer].hotspot_y;
return cairo_surface_reference(surface);
}
static void
window_attach_surface(struct window *window);
static void
free_surface(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
wl_callback_destroy(callback);
cairo_surface_destroy(window->pending_surface);
window->pending_surface = NULL;
if (window->cairo_surface)
window_attach_surface(window);
}
static const struct wl_callback_listener free_surface_listener = {
free_surface
};
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_set_type(struct window *window)
{
if (!window->shell_surface)
return;
switch (window->type) {
case TYPE_FULLSCREEN:
wl_shell_surface_set_fullscreen(window->shell_surface);
break;
case TYPE_TOPLEVEL:
wl_shell_surface_set_toplevel(window->shell_surface);
break;
case TYPE_TRANSIENT:
wl_shell_surface_set_transient(window->shell_surface,
window->parent->shell_surface,
window->x, window->y, 0);
break;
case TYPE_MENU:
break;
case TYPE_CUSTOM:
break;
}
}
static void
window_attach_surface(struct window *window)
{
struct display *display = window->display;
struct wl_buffer *buffer;
struct wl_callback *cb;
#ifdef HAVE_CAIRO_EGL
struct egl_window_surface_data *data;
#endif
int32_t x, y;
if (display->shell)
window_set_type(window);
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;
case WINDOW_BUFFER_TYPE_EGL_IMAGE:
#endif
case WINDOW_BUFFER_TYPE_SHM:
window_get_resize_dx_dy(window, &x, &y);
if (window->pending_surface != NULL)
return;
window->pending_surface = window->cairo_surface;
window->cairo_surface = NULL;
buffer =
display_get_buffer_for_surface(display,
window->pending_surface);
wl_surface_attach(window->surface, buffer, x, y);
window->server_allocation = window->allocation;
cb = wl_display_sync(display->display);
wl_callback_add_listener(cb, &free_surface_listener, window);
break;
default:
return;
}
wl_surface_damage(window->surface, 0, 0,
window->allocation.width,
window->allocation.height);
}
void
window_flush(struct window *window)
{
if (window->cairo_surface) {
switch (window->buffer_type) {
case WINDOW_BUFFER_TYPE_EGL_IMAGE:
case WINDOW_BUFFER_TYPE_SHM:
display_surface_damage(window->display,
window->cairo_surface,
0, 0,
window->allocation.width,
window->allocation.height);
break;
default:
break;
}
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;
}
struct widget *
window_get_widget(struct window *window)
{
return window->widget;
}
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;
case WINDOW_BUFFER_TYPE_EGL_IMAGE:
surface = display_create_surface(window->display,
NULL,
&window->allocation, flags);
break;
#endif
case WINDOW_BUFFER_TYPE_SHM:
surface = display_create_shm_surface(window->display,
&window->allocation, flags);
break;
default:
surface = NULL;
break;
}
window_set_surface(window, surface);
cairo_surface_destroy(surface);
}
static void
window_draw_decorations(struct window *window)
{
cairo_t *cr;
cairo_text_extents_t extents;
cairo_surface_t *frame;
int width, height, shadow_dx = 3, shadow_dy = 3;
window_create_surface(window);
width = window->allocation.width;
height = window->allocation.height;
cr = cairo_create(window->cairo_surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0, 0, 0, 0);
cairo_paint(cr);
cairo_set_source_rgba(cr, 0, 0, 0, 0.6);
tile_mask(cr, window->display->shadow,
shadow_dx, shadow_dy, width, height,
window->margin + 10 - shadow_dx,
window->margin + 10 - shadow_dy);
if (window->keyboard_device)
frame = window->display->active_frame;
else
frame = window->display->inactive_frame;
tile_source(cr, frame, 0, 0, width, height,
window->margin + 10, window->margin + 50);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_font_size(cr, 14);
cairo_text_extents(cr, window->title, &extents);
cairo_move_to(cr, (width - extents.width) / 2, 32 - extents.y_bearing);
if (window->keyboard_device)
cairo_set_source_rgb(cr, 0, 0, 0);
else
cairo_set_source_rgb(cr, 0.8, 0.8, 0.8);
cairo_show_text(cr, window->title);
cairo_destroy(cr);
}
void
window_destroy(struct window *window)
{
struct display *display = window->display;
struct input *input;
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 (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->pending_surface != NULL)
cairo_surface_destroy(window->pending_surface);
free(window->title);
free(window);
}
static struct widget *
window_find_widget(struct window *window, int32_t x, int32_t y)
{
struct widget *widget;
wl_list_for_each(widget, &window->widget_list, link) {
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;
}
struct widget *
window_add_widget(struct window *window, void *data)
{
struct widget *widget;
widget = malloc(sizeof *widget);
memset(widget, 0, sizeof *widget);
widget->window = window;
widget->user_data = data;
wl_list_insert(&window->widget_list, &widget->link);
return widget;
}
void
window_for_each_widget(struct window *window, widget_func_t func, void *data)
{
struct widget *widget;
wl_list_for_each(widget, &window->widget_list, link)
func(widget, data);
}
struct widget *
window_get_focus_widget(struct window *window)
{
return window->focus_widget;
}
void
widget_get_allocation(struct widget *widget, struct rectangle *allocation)
{
*allocation = widget->allocation;
}
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->allocation.width = width;
widget->allocation.height = height;
}
void *
widget_get_user_data(struct widget *widget)
{
return widget->user_data;
}
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_schedule_redraw(struct widget *widget)
{
window_schedule_redraw(widget->window);
}
void
window_draw(struct window *window)
{
if (!window->decoration)
window_create_surface(window);
else
window_draw_decorations(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 int
get_pointer_location(struct window *window, int32_t x, int32_t y)
{
int vlocation, hlocation, location;
const int grip_size = 8;
if (!window->decoration)
return WINDOW_CLIENT_AREA;
if (x < window->margin)
hlocation = WINDOW_EXTERIOR;
else if (window->margin <= x && x < window->margin + grip_size)
hlocation = WINDOW_RESIZING_LEFT;
else if (x < window->allocation.width - window->margin - grip_size)
hlocation = WINDOW_INTERIOR;
else if (x < window->allocation.width - window->margin)
hlocation = WINDOW_RESIZING_RIGHT;
else
hlocation = WINDOW_EXTERIOR;
if (y < window->margin)
vlocation = WINDOW_EXTERIOR;
else if (window->margin <= y && y < window->margin + grip_size)
vlocation = WINDOW_RESIZING_TOP;
else if (y < window->allocation.height - window->margin - grip_size)
vlocation = WINDOW_INTERIOR;
else if (y < window->allocation.height - window->margin)
vlocation = WINDOW_RESIZING_BOTTOM;
else
vlocation = WINDOW_EXTERIOR;
location = vlocation | hlocation;
if (location & WINDOW_EXTERIOR)
location = WINDOW_EXTERIOR;
if (location == WINDOW_INTERIOR && y < window->margin + 50)
location = WINDOW_TITLEBAR;
else if (location == WINDOW_INTERIOR)
location = WINDOW_CLIENT_AREA;
return location;
}
static int
input_get_pointer_image_for_location(struct input *input, int pointer)
{
int location;
location = get_pointer_location(input->pointer_focus,
input->sx, input->sy);
switch (location) {
case WINDOW_RESIZING_TOP:
return POINTER_TOP;
case WINDOW_RESIZING_BOTTOM:
return POINTER_BOTTOM;
case WINDOW_RESIZING_LEFT:
return POINTER_LEFT;
case WINDOW_RESIZING_RIGHT:
return POINTER_RIGHT;
case WINDOW_RESIZING_TOP_LEFT:
return POINTER_TOP_LEFT;
case WINDOW_RESIZING_TOP_RIGHT:
return POINTER_TOP_RIGHT;
case WINDOW_RESIZING_BOTTOM_LEFT:
return POINTER_BOTTOM_LEFT;
case WINDOW_RESIZING_BOTTOM_RIGHT:
return POINTER_BOTTOM_RIGHT;
case WINDOW_EXTERIOR:
case WINDOW_TITLEBAR:
return POINTER_LEFT_PTR;
default:
return pointer;
}
}
void
input_set_pointer_image(struct input *input, uint32_t time, int pointer)
{
struct display *display = input->display;
struct wl_buffer *buffer;
cairo_surface_t *surface;
if (pointer == input->current_pointer_image)
return;
input->current_pointer_image = pointer;
surface = display->pointer_surfaces[pointer];
if (!surface)
return;
buffer = display_get_buffer_for_surface(display, surface);
wl_input_device_attach(input->input_device, time, buffer,
pointer_images[pointer].hotspot_x,
pointer_images[pointer].hotspot_y);
}
static void
window_set_focus_widget(struct window *window, struct widget *focus,
struct input *input, uint32_t time, int32_t x, int32_t y)
{
struct widget *old;
if (focus == window->focus_widget)
return;
old = window->focus_widget;
if (old) {
if (old->leave_handler)
old->leave_handler(old, input, old->user_data);
window->focus_widget = NULL;
}
if (focus) {
if (focus->enter_handler)
focus->enter_handler(focus, input, time,
x, y, focus->user_data);
window->focus_widget = focus;
}
}
static void
input_handle_motion(void *data, struct wl_input_device *input_device,
uint32_t time,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct input *input = data;
struct window *window = input->pointer_focus;
struct widget *widget;
int pointer = POINTER_LEFT_PTR;
input->x = x;
input->y = y;
input->sx = sx;
input->sy = sy;
if (!window->focus_widget || !window->widget_grab_button) {
widget = window_find_widget(window, sx, sy);
window_set_focus_widget(window, widget, input, time, sx, sy);
}
widget = window->focus_widget;
if (widget && widget->motion_handler)
pointer = widget->motion_handler(widget, input, time, sx, sy,
widget->user_data);
pointer = input_get_pointer_image_for_location(input, pointer);
input_set_pointer_image(input, time, pointer);
}
static void
window_menu_func(struct window *window, int index, void *data)
{
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 */
window_set_fullscreen(window, 1);
break;
case 2: /* rotate */
case 3: /* scale */
break;
}
}
static void
input_handle_button(void *data,
struct wl_input_device *input_device,
uint32_t time, uint32_t button, uint32_t state)
{
struct input *input = data;
struct window *window = input->pointer_focus;
struct widget *widget;
int location;
int32_t x, y;
static const char *entries[] = {
"Close", "Fullscreen", "Rotate", "Scale"
};
if (window->focus_widget && window->widget_grab_button == 0 && state)
window->widget_grab_button = button;
location = get_pointer_location(window, input->sx, input->sy);
if (window->display->shell && button == BTN_LEFT && state == 1) {
switch (location) {
case WINDOW_TITLEBAR:
if (!window->shell_surface)
break;
input_set_pointer_image(input, time, POINTER_DRAGGING);
wl_shell_surface_move(window->shell_surface,
input_device, time);
break;
case WINDOW_RESIZING_TOP:
case WINDOW_RESIZING_BOTTOM:
case WINDOW_RESIZING_LEFT:
case WINDOW_RESIZING_RIGHT:
case WINDOW_RESIZING_TOP_LEFT:
case WINDOW_RESIZING_TOP_RIGHT:
case WINDOW_RESIZING_BOTTOM_LEFT:
case WINDOW_RESIZING_BOTTOM_RIGHT:
if (!window->shell_surface)
break;
wl_shell_surface_resize(window->shell_surface,
input_device, time,
location);
break;
case WINDOW_CLIENT_AREA:
if (window->button_handler)
(*window->button_handler)(window,
input, time,
button, state,
window->user_data);
break;
}
} else if (button == BTN_RIGHT && state == 1) {
switch (location) {
default:
input_get_position(input, &x, &y);
window->menu = window_create_menu(window->display,
input, time,
window,
x - 10, y - 10,
window_menu_func,
entries, 4);
window_schedule_redraw(window->menu);
break;
case WINDOW_CLIENT_AREA:
if (window->button_handler)
(*window->button_handler)(window,
input, time,
button, state,
window->user_data);
break;
}
} else {
if (window->button_handler)
(*window->button_handler)(window,
input, time,
button, state,
window->user_data);
}
if (window->focus_widget &&
window->widget_grab_button == button && !state) {
window->widget_grab_button = 0;
widget = window_find_widget(window, input->sx, input->sy);
window_set_focus_widget(window, widget, input, time,
input->sx, input->sy);
}
}
static void
input_handle_key(void *data, struct wl_input_device *input_device,
uint32_t time, uint32_t key, uint32_t state)
{
struct input *input = data;
struct window *window = input->keyboard_focus;
struct display *d = input->display;
uint32_t code, sym, level;
code = key + d->xkb->min_key_code;
if (!window || window->keyboard_device != input)
return;
level = 0;
if (input->modifiers & XKB_COMMON_SHIFT_MASK &&
XkbKeyGroupWidth(d->xkb, code, 0) > 1)
level = 1;
sym = XkbKeySymEntry(d->xkb, code, level, 0);
if (state)
input->modifiers |= d->xkb->map->modmap[code];
else
input->modifiers &= ~d->xkb->map->modmap[code];
if (window->key_handler)
(*window->key_handler)(window, input, time, key, sym, state,
window->user_data);
}
static void
input_remove_pointer_focus(struct input *input, uint32_t time)
{
struct window *window = input->pointer_focus;
if (!window)
return;
window_set_focus_widget(window, NULL, NULL, 0, 0, 0);
input->pointer_focus = NULL;
input->current_pointer_image = POINTER_UNSET;
}
static void
input_handle_pointer_focus(void *data,
struct wl_input_device *input_device,
uint32_t time, struct wl_surface *surface,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct input *input = data;
struct window *window;
struct widget *widget;
int pointer;
window = input->pointer_focus;
if (window && window->surface != surface)
input_remove_pointer_focus(input, time);
if (surface) {
input->pointer_focus = wl_surface_get_user_data(surface);
window = input->pointer_focus;
input->x = x;
input->y = y;
input->sx = sx;
input->sy = sy;
pointer = POINTER_LEFT_PTR;
widget = window_find_widget(window, x, y);
window_set_focus_widget(window, widget, input, time, sx, sy);
pointer = input_get_pointer_image_for_location(input, pointer);
input_set_pointer_image(input, time, pointer);
}
}
static void
input_remove_keyboard_focus(struct input *input)
{
struct window *window = input->keyboard_focus;
if (!window)
return;
window->keyboard_device = NULL;
if (window->keyboard_focus_handler)
(*window->keyboard_focus_handler)(window, NULL,
window->user_data);
input->keyboard_focus = NULL;
}
static void
input_handle_keyboard_focus(void *data,
struct wl_input_device *input_device,
uint32_t time,
struct wl_surface *surface,
struct wl_array *keys)
{
struct input *input = data;
struct window *window;
struct display *d = input->display;
uint32_t *k, *end;
input_remove_keyboard_focus(input);
if (surface)
input->keyboard_focus = wl_surface_get_user_data(surface);
end = keys->data + keys->size;
input->modifiers = 0;
for (k = keys->data; k < end; k++)
input->modifiers |= d->xkb->map->modmap[*k];
window = input->keyboard_focus;
if (window) {
window->keyboard_device = input;
if (window->keyboard_focus_handler)
(*window->keyboard_focus_handler)(window,
window->keyboard_device,
window->user_data);
}
}
static void
input_handle_touch_down(void *data,
struct wl_input_device *wl_input_device,
uint32_t time, struct wl_surface *surface,
int32_t id, int32_t x, int32_t y)
{
}
static void
input_handle_touch_up(void *data,
struct wl_input_device *wl_input_device,
uint32_t time, int32_t id)
{
}
static void
input_handle_touch_motion(void *data,
struct wl_input_device *wl_input_device,
uint32_t time, int32_t id, int32_t x, int32_t y)
{
}
static void
input_handle_touch_frame(void *data,
struct wl_input_device *wl_input_device)
{
}
static void
input_handle_touch_cancel(void *data,
struct wl_input_device *wl_input_device)
{
}
static const struct wl_input_device_listener input_device_listener = {
input_handle_motion,
input_handle_button,
input_handle_key,
input_handle_pointer_focus,
input_handle_keyboard_focus,
input_handle_touch_down,
input_handle_touch_up,
input_handle_touch_motion,
input_handle_touch_frame,
input_handle_touch_cancel,
};
void
input_get_position(struct input *input, int32_t *x, int32_t *y)
{
*x = input->sx;
*y = input->sy;
}
struct wl_input_device *
input_get_input_device(struct input *input)
{
return input->input_device;
}
uint32_t
input_get_modifiers(struct input *input)
{
return input->modifiers;
}
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, uint32_t id)
{
struct data_offer *offer;
offer = malloc(sizeof *offer);
wl_array_init(&offer->types);
offer->refcount = 1;
offer->input = data;
/* FIXME: Generate typesafe wrappers for this */
offer->offer = (struct wl_data_offer *)
wl_proxy_create_for_id((struct wl_proxy *) data_device,
id, &wl_data_offer_interface);
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 time, struct wl_surface *surface,
int32_t x, int32_t y, struct wl_data_offer *offer)
{
struct input *input = data;
struct window *window;
char **p;
input->drag_offer = wl_data_offer_get_user_data(offer);
window = wl_surface_get_user_data(surface);
input->pointer_focus = window;
p = wl_array_add(&input->drag_offer->types, sizeof *p);
*p = NULL;
window = input->pointer_focus;
if (window->data_handler)
window->data_handler(window, input, time, x, y,
input->drag_offer->types.data,
window->user_data);
}
static void
data_device_leave(void *data, struct wl_data_device *data_device)
{
struct input *input = data;
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, int32_t x, int32_t y)
{
struct input *input = data;
struct window *window = input->pointer_focus;
input->sx = x;
input->sy = y;
if (window->data_handler)
window->data_handler(window, input, time, x, y,
input->drag_offer->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);
input->selection_offer = wl_data_offer_get_user_data(offer);
p = wl_array_add(&input->selection_offer->types, sizeof *p);
*p = 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
};
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, uint32_t time, const char *type)
{
wl_data_offer_accept(input->drag_offer->offer, time, 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];
pipe2(p, O_CLOEXEC);
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)
{
wl_data_offer_receive(input->selection_offer->offer, mime_type, fd);
return 0;
}
void
window_move(struct window *window, struct input *input, uint32_t time)
{
if (!window->shell_surface)
return;
wl_shell_surface_move(window->shell_surface,
input->input_device, time);
}
static void
handle_configure(void *data, struct wl_shell_surface *shell_surface,
uint32_t time, uint32_t edges,
int32_t width, int32_t height)
{
struct window *window = data;
int32_t child_width, child_height;
/* FIXME: this is probably the wrong place to check for width
* or height <= 0, but it prevents the compositor from crashing
*/
if (width <= 0 || height <= 0)
return;
window->resize_edges = edges;
if (window->resize_handler) {
child_width = width - 20 - window->margin * 2;
child_height = height - 60 - window->margin * 2;
(*window->resize_handler)(window,
child_width, child_height,
window->user_data);
} else {
window->allocation.width = width;
window->allocation.height = height;
if (window->redraw_handler)
window_schedule_redraw(window);
}
}
static void
handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
{
struct window *window = data;
struct menu *menu = window_get_user_data(window);
/* FIXME: Need more context in this event, at least the input
* device. Or just use wl_callback. */
menu->func(window->parent, menu->current, window->parent->user_data);
window_destroy(window);
}
static const struct wl_shell_surface_listener shell_surface_listener = {
handle_configure,
handle_popup_done
};
void
window_get_allocation(struct window *window,
struct rectangle *allocation)
{
*allocation = window->allocation;
}
void
window_get_child_allocation(struct window *window,
struct rectangle *allocation)
{
if (!window->decoration) {
*allocation = window->allocation;
} else {
allocation->x = window->margin + 10;
allocation->y = window->margin + 50;
allocation->width =
window->allocation.width - 20 - window->margin * 2;
allocation->height =
window->allocation.height - 60 - window->margin * 2;
}
}
void
window_set_child_size(struct window *window, int32_t width, int32_t height)
{
if (window->decoration) {
window->allocation.x = 20 + window->margin;
window->allocation.y = 60 + window->margin;
window->allocation.width = width + 20 + window->margin * 2;
window->allocation.height = height + 60 + window->margin * 2;
} else {
window->allocation.x = 0;
window->allocation.y = 0;
window->allocation.width = width;
window->allocation.height = height;
}
window->widget->allocation = window->allocation;
}
static void
idle_redraw(struct task *task, uint32_t events)
{
struct window *window =
container_of(task, struct window, redraw_task);
window->redraw_handler(window, window->user_data);
window->redraw_scheduled = 0;
}
void
window_schedule_redraw(struct window *window)
{
if (!window->redraw_scheduled) {
window->redraw_task.run = idle_redraw;
display_defer(window->display, &window->redraw_task);
window->redraw_scheduled = 1;
}
}
void
window_set_custom(struct window *window)
{
window->type = TYPE_CUSTOM;
}
void
window_set_fullscreen(struct window *window, int fullscreen)
{
int32_t width, height;
struct output *output;
if ((window->type == TYPE_FULLSCREEN) == fullscreen)
return;
if (fullscreen) {
output = display_get_output(window->display);
window->type = TYPE_FULLSCREEN;
window->saved_allocation = window->allocation;
width = output->allocation.width;
height = output->allocation.height;
window->decoration = 0;
} else {
window->type = TYPE_TOPLEVEL;
width = window->saved_allocation.width - 20 - window->margin * 2;
height = window->saved_allocation.height - 60 - window->margin * 2;
window->decoration = 1;
}
(*window->resize_handler)(window, width, height, window->user_data);
}
void
window_set_decoration(struct window *window, int decoration)
{
window->decoration = decoration;
}
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_resize_handler(struct window *window,
window_resize_handler_t handler)
{
window->resize_handler = handler;
}
void
window_set_redraw_handler(struct window *window,
window_redraw_handler_t handler)
{
window->redraw_handler = handler;
}
void
window_set_key_handler(struct window *window,
window_key_handler_t handler)
{
window->key_handler = handler;
}
void
window_set_button_handler(struct window *window,
window_button_handler_t handler)
{
window->button_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_transparent(struct window *window, int transparent)
{
window->transparent = transparent;
}
void
window_set_title(struct window *window, const char *title)
{
free(window->title);
window->title = strdup(title);
}
const char *
window_get_title(struct window *window)
{
return window->title;
}
void
display_surface_damage(struct display *display, cairo_surface_t *cairo_surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wl_buffer *buffer;
buffer = display_get_buffer_for_surface(display, cairo_surface);
wl_buffer_damage(buffer, x, y, width, height);
}
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 struct window *
window_create_internal(struct display *display, struct window *parent,
int32_t width, int32_t height)
{
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);
if (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 = width;
window->allocation.height = height;
window->saved_allocation = window->allocation;
window->margin = 16;
window->decoration = 1;
window->transparent = 1;
wl_list_init(&window->widget_list);
window->widget = window_add_widget(window, window);
if (display->dpy)
#ifdef HAVE_CAIRO_EGL
/* FIXME: make TYPE_EGL_IMAGE choosable for testing */
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);
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);
}
return window;
}
struct window *
window_create(struct display *display, int32_t width, int32_t height)
{
struct window *window;
window = window_create_internal(display, NULL, width, height);
if (!window)
return NULL;
return window;
}
struct window *
window_create_transient(struct display *display, struct window *parent,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct window *window;
window = window_create_internal(parent->display,
parent, width, height);
if (!window)
return NULL;
window->type = TYPE_TRANSIENT;
window->x = x;
window->y = y;
return window;
}
static int
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->window->widget);
}
return POINTER_LEFT_PTR;
}
static int
menu_motion_handler(struct widget *widget,
struct input *input, uint32_t time,
int32_t x, int32_t y, void *data)
{
struct window *window = data;
struct menu *menu = window_get_user_data(window);
return menu_set_item(menu, y);
}
static void
menu_enter_handler(struct widget *widget,
struct input *input, uint32_t time,
int32_t x, int32_t y, void *data)
{
struct window *window = data;
struct menu *menu = window_get_user_data(window);
menu_set_item(menu, y);
}
static void
menu_leave_handler(struct widget *widget, struct input *input, void *data)
{
struct window *window = data;
struct menu *menu = window_get_user_data(window);
menu_set_item(menu, -200);
}
static void
menu_button_handler(struct window *window,
struct input *input, uint32_t time,
int button, int state, void *data)
{
struct menu *menu = data;
/* Either relase after press-drag-release or click-motion-click. */
if (state == 0 && time - menu->time > 500) {
menu->func(window->parent,
menu->current, window->parent->user_data);
window_destroy(window);
}
}
static void
menu_redraw_handler(struct window *window, void *data)
{
cairo_t *cr;
const int32_t r = 3, margin = 3;
struct menu *menu = data;
int32_t width, height, i;
width = 200;
height = menu->count * 20 + margin * 2;
window_set_child_size(window, width, height);
window_create_surface(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_SOURCE);
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);
window_flush(window);
}
struct window *
window_create_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;
menu = malloc(sizeof *menu);
if (!menu)
return NULL;
window = window_create_internal(parent->display, parent, 0, 0);
if (!window)
return NULL;
menu->window = window;
menu->entries = entries;
menu->count = count;
menu->time = time;
menu->func = func;
window->decoration = 0;
window->type = TYPE_MENU;
window->x = x;
window->y = y;
wl_shell_surface_set_popup(window->shell_surface,
input->input_device, time,
window->parent->shell_surface,
window->x, window->y, 0);
window_set_button_handler(window, menu_button_handler);
window_set_redraw_handler(window, menu_redraw_handler);
window_set_user_data(window, menu);
widget_set_enter_handler(window->widget, menu_enter_handler);
widget_set_leave_handler(window->widget, menu_leave_handler);
widget_set_motion_handler(window->widget, menu_motion_handler);
return window;
}
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)
{
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
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->input_device =
wl_display_bind(d->display, id, &wl_input_device_interface);
input->pointer_focus = NULL;
input->keyboard_focus = NULL;
wl_list_insert(d->input_list.prev, &input->link);
wl_input_device_add_listener(input->input_device,
&input_device_listener, input);
wl_input_device_set_user_data(input->input_device, input);
input->data_device =
wl_data_device_manager_get_data_device(d->data_device_manager,
input->input_device);
wl_data_device_add_listener(input->data_device,
&data_device_listener, input);
}
static void
input_destroy(struct input *input)
{
input_remove_keyboard_focus(input);
input_remove_pointer_focus(input, 0);
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);
wl_list_remove(&input->link);
wl_input_device_destroy(input->input_device);
free(input);
}
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_input_device") == 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);
}
}
static void
display_render_frame(struct display *d)
{
int radius = 8;
cairo_t *cr;
d->shadow = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(d->shadow);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
rounded_rect(cr, 16, 16, 112, 112, radius);
cairo_fill(cr);
cairo_destroy(cr);
blur_surface(d->shadow, 64);
d->active_frame =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(d->active_frame);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0.8, 0.8, 0.4, 1);
rounded_rect(cr, 16, 16, 112, 112, radius);
cairo_fill(cr);
cairo_destroy(cr);
d->inactive_frame =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 128, 128);
cr = cairo_create(d->inactive_frame);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba(cr, 0.6, 0.6, 0.6, 1);
rounded_rect(cr, 16, 16, 112, 112, radius);
cairo_fill(cr);
cairo_destroy(cr);
}
static void
init_xkb(struct display *d)
{
struct xkb_rule_names names;
names.rules = "evdev";
names.model = "pc105";
names.layout = option_xkb_layout;
names.variant = option_xkb_variant;
names.options = option_xkb_options;
d->xkb = xkb_compile_keymap_from_rules(&names);
if (!d->xkb) {
fprintf(stderr, "Failed to compile keymap\n");
exit(1);
}
}
static void
fini_xkb(struct display *display)
{
xkb_free_keymap(display->xkb);
}
static int
init_egl(struct display *d)
{
EGLint major, minor;
EGLint n;
static const EGLint premul_argb_cfg_attribs[] = {
EGL_SURFACE_TYPE,
EGL_WINDOW_BIT | EGL_PIXMAP_BIT |
EGL_VG_ALPHA_FORMAT_PRE_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 1,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
static const EGLint rgb_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, 0,
EGL_DEPTH_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
d->dpy = eglGetDisplay(d->display);
if (!eglInitialize(d->dpy, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return -1;
}
if (!eglBindAPI(EGL_OPENGL_API)) {
fprintf(stderr, "failed to bind api EGL_OPENGL_API\n");
return -1;
}
if (!eglChooseConfig(d->dpy, premul_argb_cfg_attribs,
&d->premultiplied_argb_config, 1, &n) || n != 1) {
fprintf(stderr, "failed to choose premul argb config\n");
return -1;
}
if (!eglChooseConfig(d->dpy, rgb_cfg_attribs,
&d->rgb_config, 1, &n) || n != 1) {
fprintf(stderr, "failed to choose rgb config\n");
return -1;
}
d->rgb_ctx = eglCreateContext(d->dpy, d->rgb_config, EGL_NO_CONTEXT, NULL);
if (d->rgb_ctx == NULL) {
fprintf(stderr, "failed to create context\n");
return -1;
}
d->argb_ctx = eglCreateContext(d->dpy, d->premultiplied_argb_config,
EGL_NO_CONTEXT, NULL);
if (d->argb_ctx == NULL) {
fprintf(stderr, "failed to create context\n");
return -1;
}
if (!eglMakeCurrent(d->dpy, NULL, NULL, d->rgb_ctx)) {
fprintf(stderr, "failed to make context current\n");
return -1;
}
#ifdef HAVE_CAIRO_EGL
d->rgb_device = cairo_egl_device_create(d->dpy, d->rgb_ctx);
if (cairo_device_status(d->rgb_device) != CAIRO_STATUS_SUCCESS) {
fprintf(stderr, "failed to get cairo egl device\n");
return -1;
}
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);
cairo_device_destroy(display->rgb_device);
#endif
eglMakeCurrent(display->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
eglTerminate(display->dpy);
eglReleaseThread();
}
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);
wl_display_iterate(display->display, display->mask);
}
struct display *
display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
{
struct display *d;
GOptionContext *context;
GOptionGroup *xkb_option_group;
GError *error;
g_type_init();
context = g_option_context_new(NULL);
if (option_entries)
g_option_context_add_main_entries(context, option_entries, "Wayland View");
xkb_option_group = g_option_group_new("xkb",
"Keyboard options",
"Show all XKB options",
NULL, NULL);
g_option_group_add_entries(xkb_option_group, xkb_option_entries);
g_option_context_add_group (context, xkb_option_group);
if (!g_option_context_parse(context, argc, argv, &error)) {
fprintf(stderr, "option parsing failed: %s\n", error->message);
exit(EXIT_FAILURE);
}
g_option_context_free(context);
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 = epoll_create1(EPOLL_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, &d->display_task);
wl_list_init(&d->deferred_list);
wl_list_init(&d->input_list);
wl_list_init(&d->output_list);
/* 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);
if (init_egl(d) < 0)
return NULL;
d->image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
d->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
d->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
create_pointer_surfaces(d);
display_render_frame(d);
wl_list_init(&d->window_list);
init_xkb(d);
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: windows exist.\n");
if (!wl_list_empty(&display->deferred_list))
fprintf(stderr, "toytoolkit warning: deferred tasks exist.\n");
display_destroy_outputs(display);
display_destroy_inputs(display);
fini_xkb(display);
cairo_surface_destroy(display->active_frame);
cairo_surface_destroy(display->inactive_frame);
cairo_surface_destroy(display->shadow);
destroy_pointer_surfaces(display);
fini_egl(display);
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);
wl_display_flush(display->display);
wl_display_destroy(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;
}
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_rgb_egl_config(struct display *d)
{
return d->rgb_config;
}
EGLConfig
display_get_argb_egl_config(struct display *d)
{
return d->premultiplied_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->rgb_device)
ctx = display->rgb_ctx;
else 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->rgb_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) {
while (display->mask & WL_DISPLAY_WRITABLE)
wl_display_iterate(display->display,
WL_DISPLAY_WRITABLE);
if (!display->running)
break;
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);
}
while (!wl_list_empty(&display->deferred_list)) {
task = container_of(display->deferred_list.next,
struct task, link);
wl_list_remove(&task->link);
task->run(task, 0);
}
}
}
void
display_exit(struct display *display)
{
display->running = 0;
}