desktop-shell: add unlock dialog

The unclock dialog is just a normal window with a green ball in it. When
you click the ball, the screen will be unlocked.

Made for testing the screen locking.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>

diff --git a/clients/desktop-shell.c b/clients/desktop-shell.c
index b437ed8..2ba4fcd 100644 (file)
--- a/clients/desktop-shell.c
+++ b/clients/desktop-shell.c
@@ -1,5 +1,6 @@
 /*
  * Copyright © 2011 Kristian Høgsberg
+ * Copyright © 2011 Collabora, Ltd.
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -43,6 +44,8 @@ struct desktop {
        struct panel *panel;
        struct window *background;
        const char *background_path;
+       struct unlock_dialog *unlock_dialog;
+       struct task unlock_task;
 };
 
 struct panel {
@@ -58,6 +61,14 @@ struct panel_item {
        const char *path;
 };
 
+struct unlock_dialog {
+       struct window *window;
+       struct item *button;
+       int closing;
+
+       struct desktop *desktop;
+};
+
 static char *key_background_image;
 static uint32_t key_panel_color;
 static char *key_launcher_icon;
@@ -294,6 +305,144 @@ background_draw(struct window *window, int width, int height, const char *path)
 }
 
 static void
+unlock_dialog_draw(struct unlock_dialog *dialog)
+{
+       struct rectangle allocation;
+       cairo_t *cr;
+       cairo_surface_t *surface;
+       cairo_pattern_t *pat;
+       double cx, cy, r, f;
+
+       window_draw(dialog->window);
+
+       surface = window_get_surface(dialog->window);
+       cr = cairo_create(surface);
+       window_get_child_allocation(dialog->window, &allocation);
+       cairo_rectangle(cr, allocation.x, allocation.y,
+                       allocation.width, allocation.height);
+       cairo_clip(cr);
+       cairo_push_group(cr);
+       cairo_translate(cr, allocation.x, allocation.y);
+
+       cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+       cairo_set_source_rgba(cr, 0, 0, 0, 0.6);
+       cairo_paint(cr);
+
+       if (window_get_focus_item(dialog->window) == dialog->button)
+               f = 1.0;
+       else
+               f = 0.7;
+
+       cx = allocation.width / 2.0;
+       cy = allocation.height / 2.0;
+       r = (cx < cy ? cx : cy) * 0.4;
+       pat = cairo_pattern_create_radial(cx, cy, r * 0.7, cx, cy, r);
+       cairo_pattern_add_color_stop_rgb(pat, 0.0, 0, 0.86 * f, 0);
+       cairo_pattern_add_color_stop_rgb(pat, 0.85, 0.2 * f, f, 0.2 * f);
+       cairo_pattern_add_color_stop_rgb(pat, 1.0, 0, 0.86 * f, 0);
+       cairo_set_source(cr, pat);
+       cairo_arc(cr, cx, cy, r, 0.0, 2.0 * M_PI);
+       cairo_fill(cr);
+
+       item_set_allocation(dialog->button,
+                           allocation.x + cx - r,
+                           allocation.y + cy - r, 2 * r, 2 * r);
+       cairo_pattern_destroy(pat);
+
+       cairo_pop_group_to_source(cr);
+       cairo_paint(cr);
+       cairo_destroy(cr);
+
+       window_flush(dialog->window);
+       cairo_surface_destroy(surface);
+}
+
+static void
+unlock_dialog_button_handler(struct window *window,
+                            struct input *input, uint32_t time,
+                            int button, int state, void *data)
+{
+       struct unlock_dialog *dialog = data;
+       struct desktop *desktop = dialog->desktop;
+       struct item *focus;
+
+       focus = window_get_focus_item(dialog->window);
+       if (focus && button == BTN_LEFT) {
+               if (state == 0 && !dialog->closing) {
+                       display_defer(desktop->display, &desktop->unlock_task);
+                       dialog->closing = 1;
+               }
+       }
+}
+
+static void
+unlock_dialog_redraw_handler(struct window *window, void *data)
+{
+       struct unlock_dialog *dialog = data;
+
+       unlock_dialog_draw(dialog);
+}
+
+static void
+unlock_dialog_keyboard_focus_handler(struct window *window,
+                                    struct input *device, void *data)
+{
+       window_schedule_redraw(window);
+}
+
+static void
+unlock_dialog_item_focus_handler(struct window *window,
+                        struct item *focus, void *data)
+{
+       window_schedule_redraw(window);
+}
+
+static struct unlock_dialog *
+unlock_dialog_create(struct display *display)
+{
+       struct unlock_dialog *dialog;
+
+       dialog = malloc(sizeof *dialog);
+       if (!dialog)
+               return NULL;
+       memset(dialog, 0, sizeof *dialog);
+
+       dialog->window = window_create(display, 260, 230);
+       window_set_title(dialog->window, "Unlock your desktop");
+
+       window_set_user_data(dialog->window, dialog);
+       window_set_redraw_handler(dialog->window, unlock_dialog_redraw_handler);
+       window_set_keyboard_focus_handler(dialog->window,
+                                         unlock_dialog_keyboard_focus_handler);
+       window_set_button_handler(dialog->window, unlock_dialog_button_handler);
+       window_set_item_focus_handler(dialog->window,
+                                     unlock_dialog_item_focus_handler);
+       dialog->button = window_add_item(dialog->window, NULL);
+
+       unlock_dialog_draw(dialog);
+
+       return dialog;
+}
+
+static void
+unlock_dialog_destroy(struct unlock_dialog *dialog)
+{
+       window_destroy(dialog->window);
+       free(dialog);
+}
+
+static void
+unlock_dialog_finish(struct task *task, uint32_t events)
+{
+       struct desktop *desktop =
+                       container_of(task, struct desktop, unlock_task);
+
+       desktop_shell_unlock(desktop->shell);
+       unlock_dialog_destroy(desktop->unlock_dialog);
+       desktop->unlock_dialog = NULL;
+}
+
+static void
 desktop_shell_configure(void *data,
                        struct desktop_shell *desktop_shell,
                        uint32_t time, uint32_t edges,
@@ -315,8 +464,16 @@ static void
 desktop_shell_prepare_lock_surface(void *data,
                                   struct desktop_shell *desktop_shell)
 {
-       /* no-op for now */
-       desktop_shell_unlock(desktop_shell);
+       struct desktop *desktop = data;
+
+       if (!desktop->unlock_dialog) {
+               desktop->unlock_dialog =
+                               unlock_dialog_create(desktop->display);
+               desktop->unlock_dialog->desktop = desktop;
+       }
+
+       desktop_shell_set_lock_surface(desktop_shell,
+                       window_get_wl_surface(desktop->unlock_dialog->window));
 }
 
 static const struct desktop_shell_listener listener = {
@@ -356,9 +513,11 @@ launcher_section_done(void *data)
 
 int main(int argc, char *argv[])
 {
-       struct desktop desktop;
+       struct desktop desktop = { 0 };
        char *config_file;
 
+       desktop.unlock_task.run = unlock_dialog_finish;
+
        desktop.display = display_create(&argc, &argv, NULL);
        if (desktop.display == NULL) {
                fprintf(stderr, "failed to create display: %m\n");