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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.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <time.h>
#include <cairo.h>
#include <glib.h>
#include <glib-object.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <xf86drm.h>
#define EGL_EGLEXT_PROTOTYPES 1
#define GL_GLEXT_PROTOTYPES 1
#include <GL/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <cairo-gl.h>
#include <X11/extensions/XKBcommon.h>
#include <linux/input.h>
#include "wayland-util.h"
#include "wayland-client.h"
#include "wayland-glib.h"
#include "cairo-util.h"
#include "window.h"
struct display {
struct wl_display *display;
struct wl_compositor *compositor;
struct wl_shell *shell;
struct wl_drm *drm;
struct wl_output *output;
struct rectangle screen_allocation;
int authenticated;
EGLDisplay dpy;
EGLContext ctx;
cairo_device_t *device;
int fd;
GMainLoop *loop;
GSource *source;
struct wl_list window_list;
struct wl_list input_list;
char *device_name;
cairo_surface_t *active_frame, *inactive_frame, *shadow;
struct xkb_desc *xkb;
EGLImageKHR *pointer_images;
struct wl_buffer **pointer_buffers;
};
struct window {
struct display *display;
struct wl_surface *surface;
const char *title;
struct rectangle allocation, saved_allocation, pending_allocation;
int resize_edges;
int redraw_scheduled;
int minimum_width, minimum_height;
int margin;
int fullscreen;
int decoration;
struct input *grab_device;
struct input *keyboard_device;
uint32_t name;
EGLImageKHR *image;
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_keyboard_focus_handler_t keyboard_focus_handler;
window_acknowledge_handler_t acknowledge_handler;
window_frame_handler_t frame_handler;
void *user_data;
struct wl_list link;
};
struct input {
struct display *display;
struct wl_input_device *input_device;
struct window *pointer_focus;
struct window *keyboard_focus;
uint32_t modifiers;
int32_t x, y, sx, sy;
struct wl_list link;
};
static void
rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
{
cairo_move_to(cr, x0, y0 + radius);
cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
cairo_line_to(cr, x1 - radius, y0);
cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
cairo_line_to(cr, x1, y1 - radius);
cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
cairo_line_to(cr, x0 + radius, y1);
cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
cairo_close_path(cr);
}
static int
texture_from_png(const char *filename, int width, int height)
{
GdkPixbuf *pixbuf;
GError *error = NULL;
void *data;
GLenum format;
pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
width, height,
FALSE, &error);
if (error != NULL)
return -1;
data = gdk_pixbuf_get_pixels(pixbuf);
if (gdk_pixbuf_get_has_alpha(pixbuf))
format = GL_RGBA;
else
format = GL_RGB;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
width, height, 0, format, GL_UNSIGNED_BYTE, data);
gdk_pixbuf_unref(pixbuf);
return 0;
}
static const struct {
const char *filename;
int hotspot_x, hotspot_y;
} pointer_images[] = {
{ DATADIR "/wayland/bottom_left_corner.png", 6, 30 },
{ DATADIR "/wayland/bottom_right_corner.png", 28, 28 },
{ DATADIR "/wayland/bottom_side.png", 16, 20 },
{ DATADIR "/wayland/grabbing.png", 20, 17 },
{ DATADIR "/wayland/left_ptr.png", 10, 5 },
{ DATADIR "/wayland/left_side.png", 10, 20 },
{ DATADIR "/wayland/right_side.png", 30, 19 },
{ DATADIR "/wayland/top_left_corner.png", 8, 8 },
{ DATADIR "/wayland/top_right_corner.png", 26, 8 },
{ DATADIR "/wayland/top_side.png", 18, 8 },
{ DATADIR "/wayland/xterm.png", 15, 15 }
};
static void
create_pointer_images(struct display *d)
{
int i, count;
GLuint texture;
const int width = 32, height = 32;
EGLint name, stride;
struct wl_visual *visual;
EGLint image_attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA,
EGL_IMAGE_USE_MESA, EGL_IMAGE_USE_SCANOUT_MESA,
EGL_NONE
};
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
visual = wl_display_get_argb_visual(d->display);
image_attribs[1] = width;
image_attribs[3] = height;
count = ARRAY_LENGTH(pointer_images);
d->pointer_images = malloc(count * sizeof *d->pointer_images);
d->pointer_buffers = malloc(count * sizeof *d->pointer_buffers);
for (i = 0; i < count; i++) {
d->pointer_images[i] =
eglCreateDRMImageMESA(d->dpy, image_attribs);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
d->pointer_images[i]);
eglExportDRMImageMESA(d->dpy,
d->pointer_images[i],
&name, NULL, &stride);
texture_from_png(pointer_images[i].filename, width, height);
d->pointer_buffers[i] =
wl_drm_create_buffer(d->drm, name,
width, height, stride, visual);
}
}
static const cairo_user_data_key_t surface_data_key;
struct surface_data {
EGLImageKHR image;
GLuint texture;
EGLDisplay dpy;
};
static void
surface_data_destroy(void *p)
{
struct surface_data *data = p;
glDeleteTextures(1, &data->texture);
eglDestroyImageKHR(data->dpy, data->image);
}
cairo_surface_t *
display_create_surface(struct display *display,
struct rectangle *rectangle)
{
struct surface_data *data;
EGLDisplay dpy = display->dpy;
cairo_surface_t *surface;
EGLint image_attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA,
EGL_IMAGE_USE_MESA, EGL_IMAGE_USE_SCANOUT_MESA,
EGL_NONE
};
data = malloc(sizeof *data);
image_attribs[1] = rectangle->width;
image_attribs[3] = rectangle->height;
data->image = eglCreateDRMImageMESA(dpy, image_attribs);
glGenTextures(1, &data->texture);
data->dpy = dpy;
glBindTexture(GL_TEXTURE_2D, data->texture);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, data->image);
surface = cairo_gl_surface_create_for_texture(display->device,
CAIRO_CONTENT_COLOR_ALPHA,
data->texture,
rectangle->width,
rectangle->height);
cairo_surface_set_user_data (surface, &surface_data_key,
data, surface_data_destroy);
return surface;
}
static void
window_attach_surface(struct window *window)
{
struct wl_visual *visual;
struct display *display = window->display;
struct wl_buffer *buffer;
struct surface_data *data;
EGLint name, stride;
if (window->pending_surface != NULL)
return;
window->pending_surface = window->cairo_surface;
window->cairo_surface = NULL;
data = cairo_surface_get_user_data (window->pending_surface,
&surface_data_key);
eglExportDRMImageMESA(window->display->dpy,
data->image, &name, NULL, &stride);
visual = wl_display_get_premultiplied_argb_visual(display->display);
buffer = wl_drm_create_buffer(display->drm,
name,
window->allocation.width,
window->allocation.height,
stride,
visual);
wl_surface_attach(window->surface, buffer);
wl_buffer_destroy(buffer);
wl_surface_map(window->surface,
window->allocation.x,
window->allocation.y,
window->allocation.width,
window->allocation.height);
wl_compositor_commit(window->display->compositor, 0);
}
void
window_commit(struct window *window, uint32_t key)
{
if (window->cairo_surface) {
window_attach_surface(window);
} else {
wl_compositor_commit(window->display->compositor, key);
}
}
static void
window_draw_decorations(struct window *window)
{
cairo_t *cr;
cairo_text_extents_t extents;
cairo_pattern_t *outline, *bright, *dim;
int width, height;
window->cairo_surface =
display_create_surface(window->display, &window->allocation);
width = window->allocation.width;
height = window->allocation.height;
outline = cairo_pattern_create_rgb(0.1, 0.1, 0.1);
bright = cairo_pattern_create_rgb(0.8, 0.8, 0.8);
dim = cairo_pattern_create_rgb(0.4, 0.4, 0.4);
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, 3, 3, width, height, 32);
if (window->keyboard_device)
tile_source(cr, window->display->active_frame,
0, 0, width, height, 96);
else
tile_source(cr, window->display->inactive_frame,
0, 0, width, height, 96);
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);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_width (cr, 4);
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);
cairo_device_flush (window->display->device);
}
static void
window_draw_fullscreen(struct window *window)
{
window->cairo_surface =
display_create_surface(window->display, &window->allocation);
}
void
window_draw(struct window *window)
{
if (window->cairo_surface != NULL)
cairo_surface_destroy(window->cairo_surface);
if (window->fullscreen || !window->decoration)
window_draw_fullscreen(window);
else
window_draw_decorations(window);
}
cairo_surface_t *
window_get_surface(struct window *window)
{
return window->cairo_surface;
}
enum window_state {
WINDOW_MOVING = 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_STABLE = 16,
};
enum pointer_type {
POINTER_BOTTOM_LEFT,
POINTER_BOTTOM_RIGHT,
POINTER_BOTTOM,
POINTER_DRAGGING,
POINTER_LEFT_PTR,
POINTER_LEFT,
POINTER_RIGHT,
POINTER_TOP_LEFT,
POINTER_TOP_RIGHT,
POINTER_TOP,
POINTER_IBEAM,
};
static int
get_pointer_location(struct window *window, int32_t x, int32_t y)
{
int vlocation, hlocation;
const int grip_size = 8;
if (x < window->margin)
hlocation = WINDOW_STABLE;
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_MOVING;
else if (x < window->allocation.width - window->margin)
hlocation = WINDOW_RESIZING_RIGHT;
else
hlocation = WINDOW_STABLE;
if (y < window->margin)
vlocation = WINDOW_STABLE;
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_MOVING;
else if (y < window->allocation.height - window->margin)
vlocation = WINDOW_RESIZING_BOTTOM;
else
vlocation = WINDOW_STABLE;
return vlocation | hlocation;
}
static void
set_pointer_image(struct input *input)
{
struct display *display = input->display;
int pointer, location;
location = get_pointer_location(input->pointer_focus,
input->sx, input->sy);
switch (location) {
case WINDOW_RESIZING_TOP:
pointer = POINTER_TOP;
break;
case WINDOW_RESIZING_BOTTOM:
pointer = POINTER_BOTTOM;
break;
case WINDOW_RESIZING_LEFT:
pointer = POINTER_LEFT;
break;
case WINDOW_RESIZING_RIGHT:
pointer = POINTER_RIGHT;
break;
case WINDOW_RESIZING_TOP_LEFT:
pointer = POINTER_TOP_LEFT;
break;
case WINDOW_RESIZING_TOP_RIGHT:
pointer = POINTER_TOP_RIGHT;
break;
case WINDOW_RESIZING_BOTTOM_LEFT:
pointer = POINTER_BOTTOM_LEFT;
break;
case WINDOW_RESIZING_BOTTOM_RIGHT:
pointer = POINTER_BOTTOM_RIGHT;
break;
case WINDOW_STABLE:
wl_input_device_attach(input->input_device,
NULL, 0, 0);
return;
default:
/* FIXME: We should ask the application here. */
pointer = POINTER_IBEAM;
break;
}
wl_input_device_attach(input->input_device,
display->pointer_buffers[pointer],
pointer_images[pointer].hotspot_x,
pointer_images[pointer].hotspot_y);
}
static void
window_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;
input->x = x;
input->y = y;
input->sx = sx;
input->sy = sy;
set_pointer_image(input);
}
static void window_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;
int location;
location = get_pointer_location(window, input->sx, input->sy);
if (button == BTN_LEFT && state == 1) {
switch (location) {
case WINDOW_MOVING:
wl_shell_move(window->display->shell,
window->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:
wl_shell_resize(window->display->shell,
window->surface, input_device, time,
location);
break;
}
}
}
static void
window_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 = window->display;
uint32_t code, sym, level;
code = key + d->xkb->min_key_code;
if (window->keyboard_device != input)
return;
level = 0;
if (input->modifiers & WINDOW_MODIFIER_SHIFT &&
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, key, sym, state,
input->modifiers, window->user_data);
}
static void
window_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;
if (surface) {
input->pointer_focus = wl_surface_get_user_data(surface);
set_pointer_image(input);
} else {
input->pointer_focus = NULL;
}
}
static void
window_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 = input->keyboard_focus;
struct display *d = input->display;
uint32_t *k, *end;
window = input->keyboard_focus;
if (window) {
window->keyboard_device = NULL;
if (window->keyboard_focus_handler)
(*window->keyboard_focus_handler)(window, NULL,
window->user_data);
}
if (surface)
input->keyboard_focus = wl_surface_get_user_data(surface);
else
input->keyboard_focus = NULL;
end = keys->data + keys->size;
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 const struct wl_input_device_listener input_device_listener = {
window_handle_motion,
window_handle_button,
window_handle_key,
window_handle_pointer_focus,
window_handle_keyboard_focus,
};
static void
handle_configure(void *data, struct wl_shell *shell,
uint32_t time, uint32_t edges,
struct wl_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct window *window = wl_surface_get_user_data(surface);
window->resize_edges = edges;
window->pending_allocation.x = x;
window->pending_allocation.y = y;
window->pending_allocation.width = width;
window->pending_allocation.height = height;
if (!(edges & 15))
return;
if (window->resize_handler)
(*window->resize_handler)(window,
window->user_data);
else if (window->redraw_handler)
window_schedule_redraw(window);
}
static const struct wl_shell_listener shell_listener = {
handle_configure,
};
void
window_get_child_rectangle(struct window *window,
struct rectangle *rectangle)
{
if (window->fullscreen && !window->decoration) {
*rectangle = window->allocation;
} else {
rectangle->x = window->margin + 10;
rectangle->y = window->margin + 50;
rectangle->width = window->allocation.width - 20 - window->margin * 2;
rectangle->height = window->allocation.height - 60 - window->margin * 2;
}
}
void
window_set_child_size(struct window *window,
struct rectangle *rectangle)
{
int32_t width, height;
if (!window->fullscreen) {
width = rectangle->width + 20 + window->margin * 2;
height = rectangle->height + 60 + window->margin * 2;
if (window->resize_edges & WINDOW_RESIZING_LEFT)
window->allocation.x +=
window->allocation.width - width;
if (window->resize_edges & WINDOW_RESIZING_TOP)
window->allocation.y +=
window->allocation.height - height;
window->allocation.width = width;
window->allocation.height = height;
}
}
void
window_copy_image(struct window *window,
struct rectangle *rectangle, EGLImageKHR image)
{
/* set image as read buffer, copy pixels or something... */
}
void
window_copy_surface(struct window *window,
struct rectangle *rectangle,
cairo_surface_t *surface)
{
cairo_t *cr;
cr = cairo_create (window->cairo_surface);
cairo_set_source_surface (cr,
surface,
rectangle->x, rectangle->y);
cairo_paint (cr);
cairo_destroy (cr);
}
static gboolean
idle_redraw(void *data)
{
struct window *window = data;
if (window->resize_edges)
window->allocation = window->pending_allocation;
window->redraw_handler(window, window->user_data);
window->redraw_scheduled = 0;
window->resize_edges = 0;
return FALSE;
}
void
window_schedule_redraw(struct window *window)
{
if (!window->redraw_scheduled) {
g_idle_add(idle_redraw, window);
window->redraw_scheduled = 1;
}
}
void
window_set_fullscreen(struct window *window, int fullscreen)
{
window->fullscreen = fullscreen;
if (window->fullscreen) {
window->saved_allocation = window->allocation;
window->allocation = window->display->screen_allocation;
} else {
window->allocation = window->saved_allocation;
}
}
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_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_acknowledge_handler(struct window *window,
window_acknowledge_handler_t handler)
{
window->acknowledge_handler = handler;
}
void
window_set_frame_handler(struct window *window,
window_frame_handler_t handler)
{
window->frame_handler = handler;
}
void
window_set_keyboard_focus_handler(struct window *window,
window_keyboard_focus_handler_t handler)
{
window->keyboard_focus_handler = handler;
}
void
window_move(struct window *window, int32_t x, int32_t y)
{
window->allocation.x = x;
window->allocation.y = y;
wl_surface_map(window->surface,
window->allocation.x - window->margin,
window->allocation.y - window->margin,
window->allocation.width,
window->allocation.height);
}
struct window *
window_create(struct display *display, const char *title,
int32_t x, int32_t y, 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->title = strdup(title);
window->surface = wl_compositor_create_surface(display->compositor);
window->allocation.x = x;
window->allocation.y = y;
window->allocation.width = width;
window->allocation.height = height;
window->saved_allocation = window->allocation;
window->margin = 16;
window->decoration = 1;
wl_surface_set_user_data(window->surface, window);
wl_list_insert(display->window_list.prev, &window->link);
return window;
}
static void
drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
struct display *d = data;
d->device_name = strdup(device);
}
static void drm_handle_authenticated(void *data, struct wl_drm *drm)
{
struct display *d = data;
d->authenticated = 1;
}
static const struct wl_drm_listener drm_listener = {
drm_handle_device,
drm_handle_authenticated
};
static void
display_handle_acknowledge(void *data,
struct wl_compositor *compositor,
uint32_t key, uint32_t frame)
{
struct display *d = data;
struct window *window;
/* The acknowledge event means that the server processed our
* last commit request and we can now safely free the old
* window buffer if we resized and render the next frame into
* our back buffer.. */
wl_list_for_each(window, &d->window_list, link) {
cairo_surface_destroy(window->pending_surface);
window->pending_surface = NULL;
if (window->cairo_surface)
window_attach_surface(window);
if (window->acknowledge_handler)
(*window->acknowledge_handler)(window, key, frame, window->user_data);
}
}
static void
display_handle_frame(void *data,
struct wl_compositor *compositor,
uint32_t frame, uint32_t timestamp)
{
struct display *d = data;
struct window *window;
wl_list_for_each(window, &d->window_list, link) {
if (window->frame_handler)
(*window->frame_handler)(window, frame,
timestamp, window->user_data);
}
}
static const struct wl_compositor_listener compositor_listener = {
display_handle_acknowledge,
display_handle_frame,
};
static void
display_handle_geometry(void *data,
struct wl_output *output,
int32_t width, int32_t height)
{
struct display *display = data;
display->screen_allocation.x = 0;
display->screen_allocation.y = 0;
display->screen_allocation.width = width;
display->screen_allocation.height = height;
}
static const struct wl_output_listener output_listener = {
display_handle_geometry,
};
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_input_device_create(d->display, id);
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);
}
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, "compositor") == 0) {
d->compositor = wl_compositor_create(display, id);
wl_compositor_add_listener(d->compositor,
&compositor_listener, d);
} else if (strcmp(interface, "output") == 0) {
d->output = wl_output_create(display, id);
wl_output_add_listener(d->output, &output_listener, d);
} else if (strcmp(interface, "input_device") == 0) {
display_add_input(d, id);
} else if (strcmp(interface, "shell") == 0) {
d->shell = wl_shell_create(display, id);
wl_shell_add_listener(d->shell, &shell_listener, d);
} else if (strcmp(interface, "drm") == 0) {
d->drm = wl_drm_create(display, id);
wl_drm_add_listener(d->drm, &drm_listener, d);
}
}
static const char socket_name[] = "\0wayland";
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 = "us";
names.variant = "";
names.options = "";
d->xkb = xkb_compile_keymap_from_rules(&names);
if (!d->xkb) {
fprintf(stderr, "Failed to compile keymap\n");
exit(1);
}
}
struct display *
display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
{
struct display *d;
EGLint major, minor;
int fd;
GOptionContext *context;
GError *error;
drm_magic_t magic;
g_type_init();
context = g_option_context_new(NULL);
if (option_entries) {
g_option_context_add_main_entries(context, option_entries, "Wayland View");
if (!g_option_context_parse(context, argc, argv, &error)) {
fprintf(stderr, "option parsing failed: %s\n", error->message);
exit(EXIT_FAILURE);
}
}
d = malloc(sizeof *d);
if (d == NULL)
return NULL;
d->display = wl_display_create(socket_name, sizeof socket_name);
if (d->display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return NULL;
}
wl_list_init(&d->input_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);
fd = open(d->device_name, O_RDWR);
if (fd < 0) {
fprintf(stderr, "drm open failed: %m\n");
return NULL;
}
if (drmGetMagic(fd, &magic)) {
fprintf(stderr, "DRI2: failed to get drm magic");
return NULL;
}
/* Wait for authenticated event */
wl_drm_authenticate(d->drm, magic);
wl_display_iterate(d->display, WL_DISPLAY_WRITABLE);
while (!d->authenticated)
wl_display_iterate(d->display, WL_DISPLAY_READABLE);
d->dpy = eglGetDRMDisplayMESA(fd);
if (!eglInitialize(d->dpy, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return NULL;
}
eglBindAPI(EGL_OPENGL_API);
d->ctx = eglCreateContext(d->dpy, NULL, EGL_NO_CONTEXT, NULL);
if (d->ctx == NULL) {
fprintf(stderr, "failed to create context\n");
return NULL;
}
if (!eglMakeCurrent(d->dpy, NULL, NULL, d->ctx)) {
fprintf(stderr, "faile to make context current\n");
return NULL;
}
d->device = cairo_egl_device_create(d->dpy, d->ctx);
if (d->device == NULL) {
fprintf(stderr, "failed to get cairo drm device\n");
return NULL;
}
create_pointer_images(d);
display_render_frame(d);
d->loop = g_main_loop_new(NULL, FALSE);
d->source = wl_glib_source_new(d->display);
g_source_attach(d->source, NULL);
wl_list_init(&d->window_list);
init_xkb(d);
return d;
}
struct wl_compositor *
display_get_compositor(struct display *display)
{
return display->compositor;
}
EGLDisplay
display_get_egl_display(struct display *d)
{
return d->dpy;
}
void
display_run(struct display *d)
{
g_main_loop_run(d->loop);
}