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weston/clients/tablet-shell.c

498 lines
13 KiB

/*
* Copyright © 2011, 2012 Intel Corporation
*
* 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 <unistd.h>
#include <sys/wait.h>
#include "window.h"
#include "../shared/cairo-util.h"
#include "../shared/config-parser.h"
#include "tablet-shell-client-protocol.h"
struct tablet {
struct display *display;
struct tablet_shell *tablet_shell;
struct rectangle allocation;
struct window *switcher;
struct homescreen *homescreen;
struct lockscreen *lockscreen;
};
struct homescreen {
struct window *window;
struct widget *widget;
struct wl_list launcher_list;
};
struct lockscreen {
struct window *window;
struct widget *widget;
};
struct launcher {
struct widget *widget;
struct homescreen *homescreen;
cairo_surface_t *icon;
int focused, pressed;
char *path;
struct wl_list link;
};
static char *key_lockscreen_icon;
static char *key_lockscreen_background;
static char *key_homescreen_background;
static char *key_launcher_icon;
static char *key_launcher_path;
static void launcher_section_done(void *data);
static const struct config_key shell_config_keys[] = {
{ "lockscreen-icon", CONFIG_KEY_STRING, &key_lockscreen_icon },
{ "lockscreen", CONFIG_KEY_STRING, &key_lockscreen_background },
{ "homescreen", CONFIG_KEY_STRING, &key_homescreen_background },
};
static const struct config_key launcher_config_keys[] = {
{ "icon", CONFIG_KEY_STRING, &key_launcher_icon },
{ "path", CONFIG_KEY_STRING, &key_launcher_path },
};
static const struct config_section config_sections[] = {
{ "shell",
shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
{ "launcher",
launcher_config_keys, ARRAY_LENGTH(launcher_config_keys),
launcher_section_done }
};
static void
sigchild_handler(int s)
{
int status;
pid_t pid;
while (pid = waitpid(-1, &status, WNOHANG), pid > 0)
fprintf(stderr, "child %d exited\n", pid);
}
static void
paint_background(cairo_t *cr, const char *path, struct rectangle *allocation)
{
cairo_surface_t *image = NULL;
cairo_pattern_t *pattern;
cairo_matrix_t matrix;
double sx, sy;
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
if (path)
image = load_cairo_surface(path);
if (image) {
pattern = cairo_pattern_create_for_surface(image);
sx = (double) cairo_image_surface_get_width(image) /
allocation->width;
sy = (double) cairo_image_surface_get_height(image) /
allocation->height;
cairo_matrix_init_scale(&matrix, sx, sy);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_pattern_destroy (pattern);
cairo_surface_destroy(image);
cairo_paint(cr);
} else {
fprintf(stderr, "couldn't load background image: %s\n", path);
cairo_set_source_rgb(cr, 0.2, 0, 0);
cairo_paint(cr);
}
}
static void
homescreen_draw(struct widget *widget, void *data)
{
struct homescreen *homescreen = data;
cairo_surface_t *surface;
struct rectangle allocation;
cairo_t *cr;
struct launcher *launcher;
const int rows = 4, columns = 5, icon_width = 128, icon_height = 128;
int x, y, i, width, height, vmargin, hmargin, vpadding, hpadding;
surface = window_get_surface(homescreen->window);
cr = cairo_create(surface);
widget_get_allocation(widget, &allocation);
paint_background(cr, key_homescreen_background, &allocation);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
width = allocation.width - columns * icon_width;
hpadding = width / (columns + 1);
hmargin = (width - hpadding * (columns - 1)) / 2;
height = allocation.height - rows * icon_height;
vpadding = height / (rows + 1);
vmargin = (height - vpadding * (rows - 1)) / 2;
x = hmargin;
y = vmargin;
i = 0;
wl_list_for_each(launcher, &homescreen->launcher_list, link) {
widget_set_allocation(launcher->widget,
x, y, icon_width, icon_height);
x += icon_width + hpadding;
i++;
if (i == columns) {
x = hmargin;
y += icon_height + vpadding;
i = 0;
}
}
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
static void
lockscreen_draw(struct widget *widget, void *data)
{
struct lockscreen *lockscreen = data;
cairo_surface_t *surface;
cairo_surface_t *icon;
struct rectangle allocation;
cairo_t *cr;
int width, height;
surface = window_get_surface(lockscreen->window);
cr = cairo_create(surface);
widget_get_allocation(widget, &allocation);
paint_background(cr, key_lockscreen_background, &allocation);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
icon = load_cairo_surface(key_lockscreen_icon);
if (icon) {
width = cairo_image_surface_get_width(icon);
height = cairo_image_surface_get_height(icon);
cairo_set_source_surface(cr, icon,
allocation.x + (allocation.width - width) / 2,
allocation.y + (allocation.height - height) / 2);
} else {
fprintf(stderr, "couldn't load lockscreen icon: %s\n",
key_lockscreen_icon);
cairo_set_source_rgb(cr, 0.2, 0, 0);
}
cairo_paint(cr);
cairo_destroy(cr);
cairo_surface_destroy(icon);
cairo_surface_destroy(surface);
}
static void
lockscreen_button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button,
enum wl_pointer_button_state state, void *data)
{
struct lockscreen *lockscreen = data;
if (state == WL_POINTER_BUTTON_STATE_PRESSED && lockscreen->window) {
window_destroy(lockscreen->window);
lockscreen->window = NULL;
}
}
static struct homescreen *
homescreen_create(struct tablet *tablet)
{
struct homescreen *homescreen;
homescreen = malloc (sizeof *homescreen);
memset(homescreen, 0, sizeof *homescreen);
homescreen->window = window_create_custom(tablet->display);
homescreen->widget =
window_add_widget(homescreen->window, homescreen);
window_set_user_data(homescreen->window, homescreen);
window_set_title(homescreen->window, "homescreen");
widget_set_redraw_handler(homescreen->widget, homescreen_draw);
return homescreen;
}
static struct lockscreen *
lockscreen_create(struct tablet *tablet)
{
struct lockscreen *lockscreen;
lockscreen = malloc (sizeof *lockscreen);
memset(lockscreen, 0, sizeof *lockscreen);
lockscreen->window = window_create_custom(tablet->display);
lockscreen->widget =
window_add_widget(lockscreen->window, lockscreen);
window_set_user_data(lockscreen->window, lockscreen);
window_set_title(lockscreen->window, "lockscreen");
widget_set_redraw_handler(lockscreen->widget, lockscreen_draw);
widget_set_button_handler(lockscreen->widget,
lockscreen_button_handler);
return lockscreen;
}
static void
show_lockscreen(void *data, struct tablet_shell *tablet_shell)
{
struct tablet *tablet = data;
tablet->lockscreen = lockscreen_create(tablet);
tablet_shell_set_lockscreen(tablet->tablet_shell,
window_get_wl_surface(tablet->lockscreen->window));
widget_schedule_resize(tablet->lockscreen->widget,
tablet->allocation.width,
tablet->allocation.height);
}
static void
show_switcher(void *data, struct tablet_shell *tablet_shell)
{
struct tablet *tablet = data;
tablet->switcher = window_create_custom(tablet->display);
window_set_user_data(tablet->switcher, tablet);
tablet_shell_set_switcher(tablet->tablet_shell,
window_get_wl_surface(tablet->switcher));
}
static void
hide_switcher(void *data, struct tablet_shell *tablet_shell)
{
}
static const struct tablet_shell_listener tablet_shell_listener = {
show_lockscreen,
show_switcher,
hide_switcher
};
static int
launcher_enter_handler(struct widget *widget, struct input *input,
float x, float y, void *data)
{
struct launcher *launcher = data;
launcher->focused = 1;
widget_schedule_redraw(widget);
return CURSOR_LEFT_PTR;
}
static void
launcher_leave_handler(struct widget *widget,
struct input *input, void *data)
{
struct launcher *launcher = data;
launcher->focused = 0;
widget_schedule_redraw(widget);
}
static void
launcher_activate(struct launcher *widget)
{
pid_t pid;
pid = fork();
if (pid < 0) {
fprintf(stderr, "fork failed: %m\n");
return;
}
if (pid)
return;
if (execl(widget->path, widget->path, NULL) < 0) {
fprintf(stderr, "execl '%s' failed: %m\n", widget->path);
exit(1);
}
}
static void
launcher_button_handler(struct widget *widget,
struct input *input, uint32_t time,
uint32_t button,
enum wl_pointer_button_state state, void *data)
{
struct launcher *launcher;
launcher = widget_get_user_data(widget);
widget_schedule_redraw(widget);
if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
launcher_activate(launcher);
launcher->pressed = 0;
} else if (state == WL_POINTER_BUTTON_STATE_PRESSED)
launcher->pressed = 1;
}
static void
launcher_redraw_handler(struct widget *widget, void *data)
{
struct launcher *launcher = data;
cairo_surface_t *surface;
struct rectangle allocation;
cairo_t *cr;
surface = window_get_surface(launcher->homescreen->window);
cr = cairo_create(surface);
widget_get_allocation(widget, &allocation);
if (launcher->pressed) {
allocation.x++;
allocation.y++;
}
cairo_set_source_surface(cr, launcher->icon,
allocation.x, allocation.y);
cairo_paint(cr);
if (launcher->focused) {
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
cairo_mask_surface(cr, launcher->icon,
allocation.x, allocation.y);
}
cairo_destroy(cr);
}
static void
tablet_shell_add_launcher(struct tablet *tablet,
const char *icon, const char *path)
{
struct launcher *launcher;
struct homescreen *homescreen = tablet->homescreen;
launcher = malloc(sizeof *launcher);
launcher->icon = load_cairo_surface(icon);
if ( !launcher->icon ||
cairo_surface_status (launcher->icon) != CAIRO_STATUS_SUCCESS) {
fprintf(stderr, "couldn't load %s\n", icon);
free(launcher);
return;
}
launcher->path = strdup(path);
launcher->homescreen = homescreen;
launcher->widget = widget_add_widget(homescreen->widget, launcher);
widget_set_enter_handler(launcher->widget,
launcher_enter_handler);
widget_set_leave_handler(launcher->widget,
launcher_leave_handler);
widget_set_button_handler(launcher->widget,
launcher_button_handler);
widget_set_redraw_handler(launcher->widget,
launcher_redraw_handler);
wl_list_insert(&homescreen->launcher_list, &launcher->link);
}
static void
launcher_section_done(void *data)
{
struct tablet *tablet = data;
if (key_launcher_icon == NULL || key_launcher_path == NULL) {
fprintf(stderr, "invalid launcher section\n");
return;
}
tablet_shell_add_launcher(tablet, key_launcher_icon, key_launcher_path);
free(key_launcher_icon);
key_launcher_icon = NULL;
free(key_launcher_path);
key_launcher_path = NULL;
}
static void
global_handler(struct display *display, uint32_t name,
const char *interface, uint32_t version, void *data)
{
struct tablet *tablet = data;
if (!strcmp(interface, "tablet_shell")) {
tablet->tablet_shell =
display_bind(display, name,
&tablet_shell_interface, 1);
tablet_shell_add_listener(tablet->tablet_shell,
&tablet_shell_listener, tablet);
}
}
int main(int argc, char *argv[])
{
struct tablet tablet = { 0 };
struct display *display;
int config_fd;
struct output *output;
display = display_create(&argc, argv);
if (display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
tablet.display = display;
display_set_user_data(tablet.display, &tablet);
display_set_global_handler(tablet.display, global_handler);
tablet.homescreen = homescreen_create(&tablet);
tablet_shell_set_homescreen(tablet.tablet_shell,
window_get_wl_surface(tablet.homescreen->window));
wl_display_roundtrip (display_get_display(tablet.display));
wl_list_init(&tablet.homescreen->launcher_list);
config_fd = open_config_file("weston.ini");
parse_config_file(config_fd,
config_sections, ARRAY_LENGTH(config_sections),
&tablet);
close(config_fd);
signal(SIGCHLD, sigchild_handler);
output = display_get_output(tablet.display);
output_get_allocation(output, &tablet.allocation);
widget_schedule_resize(tablet.homescreen->widget,
tablet.allocation.width,
tablet.allocation.height);
display_run(display);
return 0;
}