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bf6ceda545
weston/clients/window.c
Kristian Høgsberg bf6ceda545 Implement resizing from all sides
2010-06-14 20:25:06 -04:00

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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>
#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 <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_output *output;
struct wl_input_device *input_device;
struct rectangle screen_allocation;
EGLDisplay dpy;
EGLContext ctx;
cairo_device_t *device;
int fd;
GMainLoop *loop;
GSource *source;
struct wl_list window_list;
char *device_name;
};
struct window {
struct display *display;
struct wl_surface *surface;
const char *title;
struct rectangle allocation, saved_allocation;
int minimum_width, minimum_height;
int margin;
int drag_x, drag_y;
int state;
int fullscreen;
int decoration;
struct wl_input_device *grab_device;
struct wl_input_device *keyboard_device;
uint32_t name;
uint32_t modifiers;
EGLImageKHR *image;
cairo_surface_t *cairo_surface, *pending_surface;
int new_surface;
window_resize_handler_t resize_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;
};
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 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 *
window_create_surface(struct window *window,
struct rectangle *rectangle)
{
struct surface_data *data;
EGLDisplay dpy = window->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(window->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 surface_data *data;
EGLint name, stride;
if (window->pending_surface != NULL)
return;
window->pending_surface =
cairo_surface_reference(window->cairo_surface);
data = cairo_surface_get_user_data (window->cairo_surface, &surface_data_key);
eglExportDRMImageMESA(window->display->dpy, data->image, &name, NULL, &stride);
visual = wl_display_get_premultiplied_argb_visual(window->display->display);
wl_surface_attach(window->surface,
name,
window->allocation.width,
window->allocation.height,
stride,
visual);
wl_surface_map(window->surface,
window->allocation.x - window->margin,
window->allocation.y - window->margin,
window->allocation.width,
window->allocation.height);
}
void
window_commit(struct window *window, uint32_t key)
{
if (window->new_surface) {
window_attach_surface(window);
window->new_surface = 0;
}
wl_compositor_commit(window->display->compositor, key);
}
static void
window_draw_decorations(struct window *window)
{
cairo_t *cr;
int border = 2, radius = 5;
cairo_text_extents_t extents;
cairo_pattern_t *gradient, *outline, *bright, *dim;
int width, height;
int shadow_dx = 4, shadow_dy = 4;
window->cairo_surface =
window_create_surface(window, &window->allocation);
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);
width = window->allocation.width - window->margin * 2;
height = window->allocation.height - window->margin * 2;
cairo_translate(cr, window->margin + shadow_dx,
window->margin + shadow_dy);
cairo_set_line_width (cr, border);
cairo_set_source_rgba(cr, 0, 0, 0, 0.7);
rounded_rect(cr, -1, -1, width + 1, height + 1, radius);
cairo_fill(cr);
#define SLOW_BUT_PWETTY_not_right_now
#ifdef SLOW_BUT_PWETTY
/* FIXME: Aw, pretty drop shadows now have to fallback to sw.
* Ideally we should have convolution filters in cairo, but we
* can also fallback to compositing the shadow image a bunch
* of times according to the blur kernel. */
{
cairo_surface_t *map;
map = cairo_drm_surface_map(window->cairo_surface);
blur_surface(map, 32);
cairo_drm_surface_unmap(window->cairo_surface, map);
}
#endif
cairo_translate(cr, -shadow_dx, -shadow_dy);
if (window->keyboard_device) {
rounded_rect(cr, 0, 0, width, height, radius);
gradient = cairo_pattern_create_linear (0, 0, 0, 100);
cairo_pattern_add_color_stop_rgb(gradient, 0, 0.6, 0.6, 0.6);
cairo_pattern_add_color_stop_rgb(gradient, 1, 0.8, 0.8, 0.8);
cairo_set_source(cr, gradient);
cairo_fill(cr);
cairo_pattern_destroy(gradient);
} else {
rounded_rect(cr, 0, 0, width, height, radius);
cairo_set_source_rgba(cr, 0.6, 0.6, 0.6, 1);
cairo_fill(cr);
}
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_move_to(cr, 10, 50);
cairo_line_to(cr, width - 10, 50);
cairo_line_to(cr, width - 10, height - 10);
cairo_line_to(cr, 10, height - 10);
cairo_close_path(cr);
cairo_set_source(cr, dim);
cairo_stroke(cr);
cairo_move_to(cr, 11, 51);
cairo_line_to(cr, width - 10, 51);
cairo_line_to(cr, width - 10, height - 10);
cairo_line_to(cr, 11, height - 10);
cairo_close_path(cr);
cairo_set_source(cr, bright);
cairo_stroke(cr);
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, 10 - 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);
cairo_text_path(cr, window->title);
if (window->keyboard_device) {
cairo_set_source_rgb(cr, 0.56, 0.56, 0.56);
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
} else {
cairo_set_source_rgb(cr, 0.8, 0.8, 0.8);
cairo_fill(cr);
}
cairo_destroy(cr);
}
static void
window_draw_fullscreen(struct window *window)
{
window->cairo_surface =
window_create_surface(window, &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);
window->new_surface = 1;
}
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,
};
static void
window_handle_motion(void *data, struct wl_input_device *input_device,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct window *window = data;
switch (window->state) {
case WINDOW_MOVING:
if (window->fullscreen)
break;
if (window->grab_device != input_device)
break;
window->allocation.x = window->drag_x + x;
window->allocation.y = window->drag_y + y;
wl_surface_map(window->surface,
window->allocation.x - window->margin,
window->allocation.y - window->margin,
window->allocation.width,
window->allocation.height);
wl_compositor_commit(window->display->compositor, 1);
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->fullscreen)
break;
if (window->grab_device != input_device)
break;
if (window->state & WINDOW_RESIZING_LEFT) {
window->allocation.x = x - window->drag_x + window->saved_allocation.x;
window->allocation.width = window->drag_x - x + window->saved_allocation.width;
}
if (window->state & WINDOW_RESIZING_RIGHT)
window->allocation.width = x - window->drag_x + window->saved_allocation.width;
if (window->state & WINDOW_RESIZING_TOP) {
window->allocation.y = y - window->drag_y + window->saved_allocation.y;
window->allocation.height = window->drag_y - y + window->saved_allocation.height;
}
if (window->state & WINDOW_RESIZING_BOTTOM)
window->allocation.height = y - window->drag_y + window->saved_allocation.height;
if (window->resize_handler)
(*window->resize_handler)(window,
window->user_data);
break;
}
}
static void window_handle_button(void *data, struct wl_input_device *input_device,
uint32_t button, uint32_t state,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct window *window = data;
int grip_size = 8, vlocation, hlocation;
if (window->margin <= sx && sx < window->margin + grip_size)
hlocation = WINDOW_RESIZING_LEFT;
else if (sx < window->allocation.width - window->margin - grip_size)
hlocation = WINDOW_MOVING;
else if (sx < window->allocation.width - window->margin)
hlocation = WINDOW_RESIZING_RIGHT;
else
hlocation = WINDOW_STABLE;
if (window->margin <= sy && sy < window->margin + grip_size)
vlocation = WINDOW_RESIZING_TOP;
else if (sy < window->allocation.height - window->margin - grip_size)
vlocation = WINDOW_MOVING;
else if (sy < window->allocation.height - window->margin)
vlocation = WINDOW_RESIZING_BOTTOM;
else
vlocation = WINDOW_STABLE;
if (button == BTN_LEFT && state == 1) {
switch (hlocation | vlocation) {
case WINDOW_MOVING:
window->drag_x = window->allocation.x - x;
window->drag_y = window->allocation.y - y;
window->state = WINDOW_MOVING;
window->grab_device = input_device;
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:
window->drag_x = x;
window->drag_y = y;
window->saved_allocation = window->allocation;
window->state = hlocation | vlocation;
window->grab_device = input_device;
break;
default:
window->state = WINDOW_STABLE;
break;
}
} else if (button == BTN_LEFT &&
state == 0 && window->grab_device == input_device) {
window->state = WINDOW_STABLE;
}
}
struct key {
uint32_t code[4];
} evdev_keymap[] = {
{ { 0, 0 } }, /* 0 */
{ { 0x1b, 0x1b } },
{ { '1', '!' } },
{ { '2', '@' } },
{ { '3', '#' } },
{ { '4', '$' } },
{ { '5', '%' } },
{ { '6', '^' } },
{ { '7', '&' } },
{ { '8', '*' } },
{ { '9', '(' } },
{ { '0', ')' } },
{ { '-', '_' } },
{ { '=', '+' } },
{ { '\b', '\b' } },
{ { '\t', '\t' } },
{ { 'q', 'Q', 0x11 } }, /* 16 */
{ { 'w', 'W', 0x17 } },
{ { 'e', 'E', 0x05 } },
{ { 'r', 'R', 0x12 } },
{ { 't', 'T', 0x14 } },
{ { 'y', 'Y', 0x19 } },
{ { 'u', 'U', 0x15 } },
{ { 'i', 'I', 0x09 } },
{ { 'o', 'O', 0x0f } },
{ { 'p', 'P', 0x10 } },
{ { '[', '{', 0x1b } },
{ { ']', '}', 0x1d } },
{ { '\n', '\n' } },
{ { 0, 0 } },
{ { 'a', 'A', 0x01} },
{ { 's', 'S', 0x13 } },
{ { 'd', 'D', 0x04 } }, /* 32 */
{ { 'f', 'F', 0x06 } },
{ { 'g', 'G', 0x07 } },
{ { 'h', 'H', 0x08 } },
{ { 'j', 'J', 0x0a } },
{ { 'k', 'K', 0x0b } },
{ { 'l', 'L', 0x0c } },
{ { ';', ':' } },
{ { '\'', '"' } },
{ { '`', '~' } },
{ { 0, 0 } },
{ { '\\', '|', 0x1c } },
{ { 'z', 'Z', 0x1a } },
{ { 'x', 'X', 0x18 } },
{ { 'c', 'C', 0x03 } },
{ { 'v', 'V', 0x16 } },
{ { 'b', 'B', 0x02 } }, /* 48 */
{ { 'n', 'N', 0x0e } },
{ { 'm', 'M', 0x0d } },
{ { ',', '<' } },
{ { '.', '>' } },
{ { '/', '?' } },
{ { 0, 0 } },
{ { '*', '*' } },
{ { 0, 0 } },
{ { ' ', ' ' } },
{ { 0, 0 } }
/* 59 */
};
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
static void
window_update_modifiers(struct window *window, uint32_t key, uint32_t state)
{
uint32_t mod = 0;
switch (key) {
case KEY_LEFTSHIFT:
case KEY_RIGHTSHIFT:
mod = WINDOW_MODIFIER_SHIFT;
break;
case KEY_LEFTCTRL:
case KEY_RIGHTCTRL:
mod = WINDOW_MODIFIER_CONTROL;
break;
case KEY_LEFTALT:
case KEY_RIGHTALT:
mod = WINDOW_MODIFIER_ALT;
break;
}
if (state)
window->modifiers |= mod;
else
window->modifiers &= ~mod;
}
static void
window_handle_key(void *data, struct wl_input_device *input_device,
uint32_t key, uint32_t state)
{
struct window *window = data;
uint32_t unicode = 0;
if (window->keyboard_device != input_device)
return;
window_update_modifiers(window, key, state);
if (key < ARRAY_LENGTH(evdev_keymap)) {
if (window->modifiers & WINDOW_MODIFIER_CONTROL)
unicode = evdev_keymap[key].code[2];
else if (window->modifiers & WINDOW_MODIFIER_SHIFT)
unicode = evdev_keymap[key].code[1];
else
unicode = evdev_keymap[key].code[0];
}
if (window->key_handler)
(*window->key_handler)(window, key, unicode,
state, window->modifiers, window->user_data);
}
static void
window_handle_pointer_focus(void *data,
struct wl_input_device *input_device,
struct wl_surface *surface)
{
}
static void
window_handle_keyboard_focus(void *data,
struct wl_input_device *input_device,
struct wl_surface *surface,
struct wl_array *keys)
{
struct window *window = data;
uint32_t *k, *end;
if (window->keyboard_device == input_device && surface != window->surface)
window->keyboard_device = NULL;
else if (window->keyboard_device == NULL && surface == window->surface)
window->keyboard_device = input_device;
else
return;
if (window->keyboard_device) {
end = keys->data + keys->size;
for (k = keys->data; k < end; k++)
window_update_modifiers(window, *k, 1);
} else {
window->modifiers = 0;
}
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,
};
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->state & WINDOW_RESIZING_LEFT)
window->allocation.x -=
width - window->allocation.width;
if (window->state & WINDOW_RESIZING_TOP)
window->allocation.y -=
height - window->allocation.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);
}
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_resize_handler(struct window *window,
window_resize_handler_t handler, void *data)
{
window->resize_handler = handler;
window->user_data = data;
}
void
window_set_key_handler(struct window *window,
window_key_handler_t handler, void *data)
{
window->key_handler = handler;
window->user_data = data;
}
void
window_set_acknowledge_handler(struct window *window,
window_acknowledge_handler_t handler, void *data)
{
window->acknowledge_handler = handler;
window->user_data = data;
}
void
window_set_frame_handler(struct window *window,
window_frame_handler_t handler, void *data)
{
window->frame_handler = handler;
window->user_data = data;
}
void
window_set_keyboard_focus_handler(struct window *window,
window_keyboard_focus_handler_t handler, void *data)
{
window->keyboard_focus_handler = handler;
window->user_data = data;
}
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->state = WINDOW_STABLE;
window->decoration = 1;
wl_list_insert(display->window_list.prev, &window->link);
wl_input_device_add_listener(display->input_device,
&input_device_listener, window);
return window;
}
static void
display_handle_device(void *data,
struct wl_compositor *compositor,
const char *device)
{
struct display *d = data;
d->device_name = strdup(device);
}
static void
display_handle_acknowledge(void *data,
struct wl_compositor *compositor,
uint32_t key, uint32_t frame)
{
struct display *d = data;
struct window *window;
cairo_surface_t *pending;
/* 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) {
pending = window->pending_surface;
window->pending_surface = NULL;
if (pending != window->cairo_surface)
window_attach_surface(window);
cairo_surface_destroy(pending);
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_device,
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_handle_global(struct wl_display *display,
struct wl_object *object, void *data)
{
struct display *d = data;
if (wl_object_implements(object, "compositor", 1)) {
d->compositor = (struct wl_compositor *) object;
wl_compositor_add_listener(d->compositor, &compositor_listener, d);
} else if (wl_object_implements(object, "output", 1)) {
d->output = (struct wl_output *) object;
wl_output_add_listener(d->output, &output_listener, d);
} else if (wl_object_implements(object, "input_device", 1)) {
d->input_device =(struct wl_input_device *) object;
}
}
static const char socket_name[] = "\0wayland";
struct display *
display_create(int *argc, char **argv[], const GOptionEntry *option_entries)
{
PFNEGLGETTYPEDDISPLAYMESA get_typed_display_mesa;
struct display *d;
EGLint major, minor, count;
EGLConfig config;
int fd;
GOptionContext *context;
GError *error;
static const EGLint config_attribs[] = {
EGL_SURFACE_TYPE, 0,
EGL_NO_SURFACE_CAPABLE_MESA, EGL_OPENGL_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
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;
}
/* 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;
}
get_typed_display_mesa =
(PFNEGLGETTYPEDDISPLAYMESA) eglGetProcAddress("eglGetTypedDisplayMESA");
if (get_typed_display_mesa == NULL) {
fprintf(stderr, "eglGetDisplayMESA() not found\n");
return NULL;
}
d->dpy = get_typed_display_mesa(EGL_DRM_DISPLAY_TYPE_MESA,
(void *) fd);
if (!eglInitialize(d->dpy, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return NULL;
}
if (!eglChooseConfig(d->dpy, config_attribs, &config, 1, &count) ||
count == 0) {
fprintf(stderr, "eglChooseConfig() failed\n");
return NULL;
}
eglBindAPI(EGL_OPENGL_API);
d->ctx = eglCreateContext(d->dpy, config, 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;
}
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);
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);
}
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