448 lines
12 KiB
C
448 lines
12 KiB
C
/* view.c - Graphical menu interface MVC view. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/types.h>
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#include <grub/file.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/normal.h>
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#include <grub/video.h>
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#include <grub/gfxterm.h>
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#include <grub/bitmap.h>
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#include <grub/bitmap_scale.h>
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#include <grub/term.h>
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#include <grub/gfxwidgets.h>
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#include <grub/time.h>
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#include <grub/menu.h>
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#include <grub/menu_viewer.h>
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#include <grub/gfxmenu_view.h>
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#include <grub/gui_string_util.h>
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#include <grub/icon_manager.h>
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static void
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init_terminal (grub_gfxmenu_view_t view);
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static grub_video_rect_t term_rect;
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static grub_gfxmenu_view_t term_view;
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/* Create a new view object, loading the theme specified by THEME_PATH and
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associating MODEL with the view. */
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grub_gfxmenu_view_t
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grub_gfxmenu_view_new (const char *theme_path,
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int width, int height)
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{
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grub_gfxmenu_view_t view;
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grub_font_t default_font;
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grub_gui_color_t default_fg_color;
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grub_gui_color_t default_bg_color;
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view = grub_malloc (sizeof (*view));
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if (! view)
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return 0;
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view->screen.x = 0;
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view->screen.y = 0;
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view->screen.width = width;
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view->screen.height = height;
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default_font = grub_font_get ("Unknown Regular 16");
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default_fg_color = grub_gui_color_rgb (0, 0, 0);
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default_bg_color = grub_gui_color_rgb (255, 255, 255);
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view->canvas = 0;
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view->title_font = default_font;
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view->message_font = default_font;
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view->terminal_font_name = grub_strdup ("Fixed 10");
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view->title_color = default_fg_color;
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view->message_color = default_bg_color;
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view->message_bg_color = default_fg_color;
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view->desktop_image = 0;
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view->desktop_color = default_bg_color;
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view->terminal_box = grub_gfxmenu_create_box (0, 0);
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view->title_text = grub_strdup ("GRUB Boot Menu");
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view->progress_message_text = 0;
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view->theme_path = 0;
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/* Set the timeout bar's frame. */
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view->progress_message_frame.width = view->screen.width * 4 / 5;
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view->progress_message_frame.height = 50;
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view->progress_message_frame.x = view->screen.x
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+ (view->screen.width - view->progress_message_frame.width) / 2;
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view->progress_message_frame.y = view->screen.y
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+ view->screen.height - 90 - 20 - view->progress_message_frame.height;
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if (grub_gfxmenu_view_load_theme (view, theme_path) != 0)
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{
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grub_gfxmenu_view_destroy (view);
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return 0;
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}
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return view;
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}
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/* Destroy the view object. All used memory is freed. */
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void
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grub_gfxmenu_view_destroy (grub_gfxmenu_view_t view)
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{
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if (!view)
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return;
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grub_video_bitmap_destroy (view->desktop_image);
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if (view->terminal_box)
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view->terminal_box->destroy (view->terminal_box);
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grub_free (view->terminal_font_name);
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grub_free (view->title_text);
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grub_free (view->progress_message_text);
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grub_free (view->theme_path);
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if (view->canvas)
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view->canvas->component.ops->destroy (view->canvas);
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grub_free (view);
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}
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static void
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redraw_background (grub_gfxmenu_view_t view,
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const grub_video_rect_t *bounds)
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{
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if (view->desktop_image)
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{
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struct grub_video_bitmap *img = view->desktop_image;
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grub_video_blit_bitmap (img, GRUB_VIDEO_BLIT_REPLACE,
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bounds->x, bounds->y,
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bounds->x - view->screen.x,
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bounds->y - view->screen.y,
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bounds->width, bounds->height);
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}
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else
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{
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grub_video_fill_rect (grub_gui_map_color (view->desktop_color),
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bounds->x, bounds->y,
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bounds->width, bounds->height);
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}
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}
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static void
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draw_title (grub_gfxmenu_view_t view)
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{
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if (! view->title_text)
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return;
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/* Center the title. */
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int title_width = grub_font_get_string_width (view->title_font,
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view->title_text);
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int x = (view->screen.width - title_width) / 2;
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int y = 40 + grub_font_get_ascent (view->title_font);
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grub_font_draw_string (view->title_text,
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view->title_font,
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grub_gui_map_color (view->title_color),
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x, y);
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}
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struct progress_value_data
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{
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int visible;
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int start;
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int end;
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int value;
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};
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struct grub_gfxmenu_timeout_notify *grub_gfxmenu_timeout_notifications;
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static void
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update_timeouts (int visible, int start, int value, int end)
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{
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struct grub_gfxmenu_timeout_notify *cur;
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for (cur = grub_gfxmenu_timeout_notifications; cur; cur = cur->next)
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cur->set_state (cur->self, visible, start, value, end);
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}
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static void
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redraw_timeouts (struct grub_gfxmenu_view *view)
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{
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struct grub_gfxmenu_timeout_notify *cur;
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for (cur = grub_gfxmenu_timeout_notifications; cur; cur = cur->next)
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{
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grub_video_rect_t bounds;
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cur->self->ops->get_bounds (cur->self, &bounds);
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grub_gfxmenu_view_redraw (view, &bounds);
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}
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}
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void
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grub_gfxmenu_print_timeout (int timeout, void *data)
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{
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struct grub_gfxmenu_view *view = data;
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if (view->first_timeout == -1)
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view->first_timeout = timeout;
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update_timeouts (1, -(view->first_timeout + 1), -timeout, 0);
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redraw_timeouts (view);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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redraw_timeouts (view);
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}
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void
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grub_gfxmenu_clear_timeout (void *data)
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{
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struct grub_gfxmenu_view *view = data;
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update_timeouts (0, 1, 0, 0);
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redraw_timeouts (view);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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redraw_timeouts (view);
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}
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static void
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update_menu_visit (grub_gui_component_t component,
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void *userdata)
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{
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grub_gfxmenu_view_t view;
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view = userdata;
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if (component->ops->is_instance (component, "list"))
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{
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grub_gui_list_t list = (grub_gui_list_t) component;
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list->ops->set_view_info (list, view);
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}
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}
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/* Update any boot menu components with the current menu model and
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theme path. */
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static void
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update_menu_components (grub_gfxmenu_view_t view)
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{
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grub_gui_iterate_recursively ((grub_gui_component_t) view->canvas,
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update_menu_visit, view);
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}
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static void
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draw_message (grub_gfxmenu_view_t view)
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{
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char *text = view->progress_message_text;
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grub_video_rect_t f = view->progress_message_frame;
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if (! text)
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return;
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grub_font_t font = view->message_font;
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grub_video_color_t color = grub_gui_map_color (view->message_color);
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/* Border. */
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grub_video_fill_rect (color,
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f.x-1, f.y-1, f.width+2, f.height+2);
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/* Fill. */
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grub_video_fill_rect (grub_gui_map_color (view->message_bg_color),
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f.x, f.y, f.width, f.height);
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/* Center the text. */
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int text_width = grub_font_get_string_width (font, text);
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int x = f.x + (f.width - text_width) / 2;
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int y = (f.y + (f.height - grub_font_get_descent (font)) / 2
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+ grub_font_get_ascent (font) / 2);
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grub_font_draw_string (text, font, color, x, y);
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}
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void
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grub_gfxmenu_view_redraw (grub_gfxmenu_view_t view,
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const grub_video_rect_t *region)
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{
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if (grub_video_have_common_points (&term_rect, region))
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grub_gfxterm_schedule_repaint ();
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grub_video_set_active_render_target (GRUB_VIDEO_RENDER_TARGET_DISPLAY);
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redraw_background (view, region);
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if (view->canvas)
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view->canvas->component.ops->paint (view->canvas, region);
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draw_title (view);
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if (grub_video_have_common_points (&view->progress_message_frame, region))
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draw_message (view);
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}
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void
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grub_gfxmenu_view_draw (grub_gfxmenu_view_t view)
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{
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init_terminal (view);
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/* Clear the screen; there may be garbage left over in video memory. */
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grub_video_fill_rect (grub_video_map_rgb (0, 0, 0),
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view->screen.x, view->screen.y,
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view->screen.width, view->screen.height);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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grub_video_fill_rect (grub_video_map_rgb (0, 0, 0),
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view->screen.x, view->screen.y,
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view->screen.width, view->screen.height);
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update_menu_components (view);
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grub_gfxmenu_view_redraw (view, &view->screen);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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grub_gfxmenu_view_redraw (view, &view->screen);
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}
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static void
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redraw_menu_visit (grub_gui_component_t component,
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void *userdata)
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{
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grub_gfxmenu_view_t view;
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view = userdata;
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if (component->ops->is_instance (component, "list"))
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{
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grub_gui_list_t list;
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grub_video_rect_t bounds;
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list = (grub_gui_list_t) component;
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component->ops->get_bounds (component, &bounds);
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grub_gfxmenu_view_redraw (view, &bounds);
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}
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}
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void
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grub_gfxmenu_redraw_menu (grub_gfxmenu_view_t view)
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{
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update_menu_components (view);
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grub_gui_iterate_recursively ((grub_gui_component_t) view->canvas,
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redraw_menu_visit, view);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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{
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grub_gui_iterate_recursively ((grub_gui_component_t) view->canvas,
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redraw_menu_visit, view);
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}
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}
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void
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grub_gfxmenu_set_chosen_entry (int entry, void *data)
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{
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grub_gfxmenu_view_t view = data;
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view->selected = entry;
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grub_gfxmenu_redraw_menu (view);
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}
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static void
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grub_gfxmenu_draw_terminal_box (void)
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{
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grub_gfxmenu_box_t term_box;
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term_box = term_view->terminal_box;
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if (!term_box)
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return;
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term_box->set_content_size (term_box, term_rect.width,
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term_rect.height);
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term_box->draw (term_box,
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term_rect.x - term_box->get_left_pad (term_box),
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term_rect.y - term_box->get_top_pad (term_box));
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}
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static void
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init_terminal (grub_gfxmenu_view_t view)
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{
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term_rect.width = view->screen.width * 7 / 10;
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term_rect.height = view->screen.height * 7 / 10;
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term_rect.x = view->screen.x + view->screen.width * (10 - 7) / 10 / 2;
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term_rect.y = view->screen.y + view->screen.height * (10 - 7) / 10 / 2;
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term_view = view;
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/* Note: currently there is no API for changing the gfxterm font
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on the fly, so whatever font the initially loaded theme specifies
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will be permanent. */
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grub_gfxterm_set_window (GRUB_VIDEO_RENDER_TARGET_DISPLAY, term_rect.x,
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term_rect.y,
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term_rect.width, term_rect.height,
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view->double_repaint, view->terminal_font_name, 3);
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grub_gfxterm_decorator_hook = grub_gfxmenu_draw_terminal_box;
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}
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/* FIXME: previously notifications were displayed in special case.
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Is it necessary?
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*/
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#if 0
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/* Sets MESSAGE as the progress message for the view.
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MESSAGE can be 0, in which case no message is displayed. */
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static void
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set_progress_message (grub_gfxmenu_view_t view, const char *message)
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{
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grub_free (view->progress_message_text);
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if (message)
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view->progress_message_text = grub_strdup (message);
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else
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view->progress_message_text = 0;
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}
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static void
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notify_booting (grub_menu_entry_t entry, void *userdata)
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{
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grub_gfxmenu_view_t view = (grub_gfxmenu_view_t) userdata;
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char *s = grub_malloc (100 + grub_strlen (entry->title));
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if (!s)
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return;
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grub_sprintf (s, "Booting '%s'", entry->title);
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set_progress_message (view, s);
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grub_free (s);
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grub_gfxmenu_view_redraw (view, &view->progress_message_frame);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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grub_gfxmenu_view_redraw (view, &view->progress_message_frame);
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}
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static void
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notify_fallback (grub_menu_entry_t entry, void *userdata)
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{
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grub_gfxmenu_view_t view = (grub_gfxmenu_view_t) userdata;
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char *s = grub_malloc (100 + grub_strlen (entry->title));
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if (!s)
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return;
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grub_sprintf (s, "Falling back to '%s'", entry->title);
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set_progress_message (view, s);
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grub_free (s);
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grub_gfxmenu_view_redraw (view, &view->progress_message_frame);
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grub_video_swap_buffers ();
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if (view->double_repaint)
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grub_gfxmenu_view_redraw (view, &view->progress_message_frame);
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}
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static void
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notify_execution_failure (void *userdata __attribute__ ((unused)))
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{
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}
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static struct grub_menu_execute_callback execute_callback =
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{
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.notify_booting = notify_booting,
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.notify_fallback = notify_fallback,
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.notify_failure = notify_execution_failure
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};
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#endif
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