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Unverified Commit 15b8b1f3 authored by A1ive's avatar A1ive Committed by GitHub
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support scrolling menu entry's text (#1539)

parent a20592ec
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GRUB2/MOD_SRC/grub-2.04/grub-core/gfxmenu/gfxmenu.c
View file @ 15b8b1f3
...@@ -119,6 +119,8 @@ grub_gfxmenu_try (int entry, grub_menu_t menu, int nested) ...@@ -119,6 +119,8 @@ grub_gfxmenu_try (int entry, grub_menu_t menu, int nested)
view->menu = menu; view->menu = menu;
view->nested = nested; view->nested = nested;
view->first_timeout = -1; view->first_timeout = -1;
if (menu->size)
view->menu_title_offset = grub_zalloc (sizeof (*view->menu_title_offset) * menu->size);
grub_video_set_viewport (0, 0, mode_info.width, mode_info.height); grub_video_set_viewport (0, 0, mode_info.width, mode_info.height);
if (view->double_repaint) if (view->double_repaint)
...@@ -134,6 +136,8 @@ grub_gfxmenu_try (int entry, grub_menu_t menu, int nested) ...@@ -134,6 +136,8 @@ grub_gfxmenu_try (int entry, grub_menu_t menu, int nested)
instance->fini = grub_gfxmenu_viewer_fini; instance->fini = grub_gfxmenu_viewer_fini;
instance->print_timeout = grub_gfxmenu_print_timeout; instance->print_timeout = grub_gfxmenu_print_timeout;
instance->clear_timeout = grub_gfxmenu_clear_timeout; instance->clear_timeout = grub_gfxmenu_clear_timeout;
if (view->menu_title_offset)
instance->scroll_chosen_entry = grub_gfxmenu_scroll_chosen_entry;
grub_menu_register_viewer (instance); grub_menu_register_viewer (instance);
......
GRUB2/MOD_SRC/grub-2.04/grub-core/gfxmenu/gui_list.c 0 → 100644
View file @ 15b8b1f3
/* gui_list.c - GUI component to display a selectable list of items. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/gui.h>
#include <grub/gui_string_util.h>
#include <grub/gfxmenu_view.h>
#include <grub/gfxwidgets.h>
#include <grub/color.h>
#include <grub/charset.h>
enum scrollbar_slice_mode {
SCROLLBAR_SLICE_WEST,
SCROLLBAR_SLICE_CENTER,
SCROLLBAR_SLICE_EAST
};
struct grub_gui_list_impl
{
struct grub_gui_list list;
grub_gui_container_t parent;
grub_video_rect_t bounds;
char *id;
int visible;
int icon_width;
int icon_height;
int item_height;
int item_padding;
int item_icon_space;
int item_spacing;
grub_font_t item_font;
int selected_item_font_inherit;
grub_font_t selected_item_font;
grub_video_rgba_color_t item_color;
int selected_item_color_inherit;
grub_video_rgba_color_t selected_item_color;
int draw_scrollbar;
int need_to_recreate_scrollbar;
char *scrollbar_frame_pattern;
char *scrollbar_thumb_pattern;
grub_gfxmenu_box_t scrollbar_frame;
grub_gfxmenu_box_t scrollbar_thumb;
int scrollbar_thumb_overlay;
int scrollbar_width;
enum scrollbar_slice_mode scrollbar_slice;
int scrollbar_left_pad;
int scrollbar_right_pad;
int scrollbar_top_pad;
int scrollbar_bottom_pad;
int first_shown_index;
int need_to_recreate_boxes;
char *theme_dir;
char *menu_box_pattern;
char *item_box_pattern;
int selected_item_box_pattern_inherit;
char *selected_item_box_pattern;
grub_gfxmenu_box_t menu_box;
grub_gfxmenu_box_t selected_item_box;
grub_gfxmenu_box_t item_box;
grub_gfxmenu_icon_manager_t icon_manager;
grub_gfxmenu_view_t view;
};
typedef struct grub_gui_list_impl *list_impl_t;
static void
list_destroy (void *vself)
{
list_impl_t self = vself;
grub_free (self->theme_dir);
grub_free (self->menu_box_pattern);
grub_free (self->item_box_pattern);
grub_free (self->selected_item_box_pattern);
if (self->menu_box)
self->menu_box->destroy (self->menu_box);
if (self->item_box)
self->item_box->destroy (self->item_box);
if (self->selected_item_box)
self->selected_item_box->destroy (self->selected_item_box);
if (self->icon_manager)
grub_gfxmenu_icon_manager_destroy (self->icon_manager);
if (self->scrollbar_thumb)
self->scrollbar_thumb->destroy (self->scrollbar_thumb);
if (self->scrollbar_frame)
self->scrollbar_frame->destroy (self->scrollbar_frame);
grub_free (self->scrollbar_thumb_pattern);
grub_free (self->scrollbar_frame_pattern);
grub_free (self);
}
static int
get_num_shown_items (list_impl_t self)
{
int boxpad = self->item_padding;
int item_vspace = self->item_spacing;
int item_height = self->item_height;
grub_gfxmenu_box_t box = self->menu_box;
int box_top_pad = box->get_top_pad (box);
int box_bottom_pad = box->get_bottom_pad (box);
grub_gfxmenu_box_t itembox = self->item_box;
grub_gfxmenu_box_t selbox = self->selected_item_box;
int item_top_pad = itembox->get_top_pad (itembox);
int item_bottom_pad = itembox->get_bottom_pad (itembox);
int sel_top_pad = selbox->get_top_pad (selbox);
int sel_bottom_pad = selbox->get_bottom_pad (selbox);
int max_top_pad = grub_max (item_top_pad, sel_top_pad);
int max_bottom_pad = grub_max (item_bottom_pad, sel_bottom_pad);
if (item_height + item_vspace <= 0)
return 1;
return (self->bounds.height + item_vspace - 2 * boxpad
- max_top_pad - max_bottom_pad
- box_top_pad - box_bottom_pad) / (item_height + item_vspace);
}
static int
check_boxes (list_impl_t self)
{
if (self->need_to_recreate_boxes)
{
grub_gui_recreate_box (&self->menu_box,
self->menu_box_pattern,
self->theme_dir);
grub_gui_recreate_box (&self->item_box,
self->item_box_pattern,
self->theme_dir);
grub_gui_recreate_box (&self->selected_item_box,
self->selected_item_box_pattern,
self->theme_dir);
self->need_to_recreate_boxes = 0;
}
return (self->menu_box != 0 && self->selected_item_box != 0
&& self->item_box != 0);
}
static int
check_scrollbar (list_impl_t self)
{
if (self->need_to_recreate_scrollbar)
{
grub_gui_recreate_box (&self->scrollbar_frame,
self->scrollbar_frame_pattern,
self->theme_dir);
grub_gui_recreate_box (&self->scrollbar_thumb,
self->scrollbar_thumb_pattern,
self->theme_dir);
self->need_to_recreate_scrollbar = 0;
}
if (self->scrollbar_frame == 0 || self->scrollbar_thumb == 0)
return 0;
/* Sanity checks. */
grub_gfxmenu_box_t frame = self->scrollbar_frame;
grub_gfxmenu_box_t thumb = self->scrollbar_thumb;
grub_gfxmenu_box_t menu = self->menu_box;
int min_width = frame->get_left_pad (frame)
+ frame->get_right_pad (frame);
int min_height = frame->get_top_pad (frame)
+ frame->get_bottom_pad (frame)
+ self->scrollbar_top_pad + self->scrollbar_bottom_pad
+ menu->get_top_pad (menu)
+ menu->get_bottom_pad (menu);
if (!self->scrollbar_thumb_overlay)
{
min_width += thumb->get_left_pad (thumb)
+ thumb->get_right_pad (thumb);
min_height += thumb->get_top_pad (thumb)
+ thumb->get_bottom_pad (thumb);
}
if (min_width <= self->scrollbar_width
&& min_height <= (int) self->bounds.height)
return 1;
/* Unprintable dimenstions. */
self->draw_scrollbar = 0;
return 0;
}
static const char *
list_get_id (void *vself)
{
list_impl_t self = vself;
return self->id;
}
static int
list_is_instance (void *vself __attribute__((unused)), const char *type)
{
return (grub_strcmp (type, "component") == 0
|| grub_strcmp (type, "list") == 0);
}
static struct grub_video_bitmap *
get_item_icon (list_impl_t self, int item_index)
{
grub_menu_entry_t entry;
entry = grub_menu_get_entry (self->view->menu, item_index);
if (! entry)
return 0;
return grub_gfxmenu_icon_manager_get_icon (self->icon_manager, entry);
}
static void
make_selected_item_visible (list_impl_t self)
{
int selected_index = self->view->selected;
if (selected_index < 0)
return; /* No item is selected. */
int num_shown_items = get_num_shown_items (self);
int last_shown_index = self->first_shown_index + (num_shown_items - 1);
if (selected_index < self->first_shown_index)
self->first_shown_index = selected_index;
else if (selected_index > last_shown_index)
self->first_shown_index = selected_index - (num_shown_items - 1);
}
/* Draw a scrollbar on the menu. */
static void
draw_scrollbar (list_impl_t self,
int value, int extent, int min, int max,
int scrollbar_width, int scrollbar_height)
{
unsigned thumby, thumbheight;
grub_gfxmenu_box_t frame = self->scrollbar_frame;
grub_gfxmenu_box_t thumb = self->scrollbar_thumb;
int frame_vertical_pad = (frame->get_top_pad (frame)
+ frame->get_bottom_pad (frame));
int frame_horizontal_pad = (frame->get_left_pad (frame)
+ frame->get_right_pad (frame));
unsigned thumb_vertical_pad = (thumb->get_top_pad (thumb)
+ thumb->get_bottom_pad (thumb));
int thumb_horizontal_pad = (thumb->get_left_pad (thumb)
+ thumb->get_right_pad (thumb));
int tracktop = frame->get_top_pad (frame);
unsigned tracklen;
if (scrollbar_height <= frame_vertical_pad)
tracklen = 0;
else
tracklen = scrollbar_height - frame_vertical_pad;
frame->set_content_size (frame,
scrollbar_width - frame_horizontal_pad,
tracklen);
if (self->scrollbar_thumb_overlay)
{
tracklen += thumb_vertical_pad;
tracktop -= thumb->get_top_pad (thumb);
}
if (value <= min || max <= min)
thumby = 0;
else
thumby = ((unsigned) tracklen * (value - min))
/ ((unsigned) (max - min));
if (max <= min)
thumbheight = 1;
else
thumbheight = ((unsigned) (tracklen * extent)
/ ((unsigned) (max - min))) + 1;
/* Rare occasion: too many entries or too low height. */
if (thumbheight < thumb_vertical_pad)
{
thumbheight = thumb_vertical_pad;
if (value <= min || max <= extent
|| tracklen <= thumb_vertical_pad)
thumby = 0;
else
thumby = ((unsigned) ((tracklen - thumb_vertical_pad) * (value - min))
/ ((unsigned)(max - extent)));
}
thumby += tracktop;
int thumbx = frame->get_left_pad (frame);
int thumbwidth = scrollbar_width - frame_horizontal_pad;
if (!self->scrollbar_thumb_overlay)
thumbwidth -= thumb_horizontal_pad;
else
thumbx -= thumb->get_left_pad (thumb);
thumb->set_content_size (thumb, thumbwidth,
thumbheight - thumb_vertical_pad);
frame->draw (frame, 0, 0);
thumb->draw (thumb, thumbx, thumby);
}
/* Draw the list of items. */
static void
draw_menu (list_impl_t self, int num_shown_items)
{
if (! self->menu_box || ! self->selected_item_box || ! self->item_box)
return;
int boxpad = self->item_padding;
int icon_text_space = self->item_icon_space;
int item_vspace = self->item_spacing;
int ascent = grub_font_get_ascent (self->item_font);
int descent = grub_font_get_descent (self->item_font);
int selected_ascent = grub_font_get_ascent (self->selected_item_font);
int selected_descent = grub_font_get_descent (self->selected_item_font);
int text_box_height = self->item_height;
make_selected_item_visible (self);
grub_gfxmenu_box_t itembox = self->item_box;
grub_gfxmenu_box_t selbox = self->selected_item_box;
int item_leftpad = itembox->get_left_pad (itembox);
int item_rightpad = itembox->get_right_pad (itembox);
int item_border_width = item_leftpad + item_rightpad;
int item_toppad = itembox->get_top_pad (itembox);
int sel_leftpad = selbox->get_left_pad (selbox);
int sel_rightpad = selbox->get_right_pad (selbox);
int sel_border_width = sel_leftpad + sel_rightpad;
int sel_toppad = selbox->get_top_pad (selbox);
int max_leftpad = grub_max (item_leftpad, sel_leftpad);
int max_toppad = grub_max (item_toppad, sel_toppad);
int item_top = 0;
int menu_index;
int visible_index;
struct grub_video_rect oviewport;
grub_video_get_viewport (&oviewport.x, &oviewport.y,
&oviewport.width, &oviewport.height);
grub_video_set_viewport (oviewport.x + boxpad,
oviewport.y + boxpad,
oviewport.width - 2 * boxpad,
oviewport.height - 2 * boxpad);
int cwidth = oviewport.width - 2 * boxpad;
itembox->set_content_size (itembox, cwidth - item_border_width,
text_box_height);
selbox->set_content_size (selbox, cwidth - sel_border_width,
text_box_height);
int text_left_offset = self->icon_width + icon_text_space;
int item_text_top_offset = (text_box_height - (ascent + descent)) / 2 + ascent;
int sel_text_top_offset = (text_box_height - (selected_ascent
+ selected_descent)) / 2
+ selected_ascent;
grub_video_rect_t svpsave, sviewport;
sviewport.x = max_leftpad + text_left_offset;
int text_viewport_width = cwidth - sviewport.x;
sviewport.height = text_box_height;
grub_video_color_t item_color;
grub_video_color_t sel_color;
item_color = grub_video_map_rgba_color (self->item_color);
sel_color = grub_video_map_rgba_color (self->selected_item_color);
int item_box_top_offset = max_toppad - item_toppad;
int sel_box_top_offset = max_toppad - sel_toppad;
int item_viewport_width = text_viewport_width - item_rightpad;
int sel_viewport_width = text_viewport_width - sel_rightpad;
int tmp_icon_top_offset = (text_box_height - self->icon_height) / 2;
int item_icon_top_offset = item_toppad + tmp_icon_top_offset;
int sel_icon_top_offset = sel_toppad + tmp_icon_top_offset;
for (visible_index = 0, menu_index = self->first_shown_index;
visible_index < num_shown_items && menu_index < self->view->menu->size;
visible_index++, menu_index++)
{
int is_selected = (menu_index == self->view->selected);
struct grub_video_bitmap *icon;
grub_font_t font;
grub_video_color_t color;
int text_top_offset;
int top_pad;
int icon_top_offset;
int viewport_width;
if (is_selected)
{
selbox->draw (selbox, 0, item_top + sel_box_top_offset);
font = self->selected_item_font;
color = sel_color;
text_top_offset = sel_text_top_offset;
top_pad = sel_toppad;
icon_top_offset = sel_icon_top_offset;
viewport_width = sel_viewport_width;
}
else
{
itembox->draw (itembox, 0, item_top + item_box_top_offset);
font = self->item_font;
color = item_color;
text_top_offset = item_text_top_offset;
top_pad = item_toppad;
icon_top_offset = item_icon_top_offset;
viewport_width = item_viewport_width;
}
icon = get_item_icon (self, menu_index);
if (icon != 0)
grub_video_blit_bitmap (icon, GRUB_VIDEO_BLIT_BLEND,
max_leftpad,
item_top + icon_top_offset,
0, 0, self->icon_width, self->icon_height);
const char *item_title =
grub_menu_get_entry (self->view->menu, menu_index)->title;
int off = self->view->menu_title_offset[menu_index];
const char *scrolled_title =
grub_utf8_offset_code (item_title, grub_strlen (item_title), off);
if (scrolled_title)
item_title = scrolled_title;
sviewport.y = item_top + top_pad;
sviewport.width = viewport_width;
grub_gui_set_viewport (&sviewport, &svpsave);
grub_font_draw_string (item_title,
font,
color,
0,
text_top_offset);
grub_gui_restore_viewport (&svpsave);
item_top += text_box_height + item_vspace;
}
grub_video_set_viewport (oviewport.x,
oviewport.y,
oviewport.width,
oviewport.height);
}
static void
list_paint (void *vself, const grub_video_rect_t *region)
{
list_impl_t self = vself;
grub_video_rect_t vpsave;
if (! self->visible)
return;
if (!grub_video_have_common_points (region, &self->bounds))
return;
check_boxes (self);
if (! self->menu_box || ! self->selected_item_box || ! self->item_box)
return;
grub_gui_set_viewport (&self->bounds, &vpsave);
{
grub_gfxmenu_box_t box = self->menu_box;
int box_left_pad = box->get_left_pad (box);
int box_top_pad = box->get_top_pad (box);
int box_right_pad = box->get_right_pad (box);
int box_bottom_pad = box->get_bottom_pad (box);
grub_video_rect_t vpsave2, content_rect;
int num_shown_items = get_num_shown_items (self);
int drawing_scrollbar = (self->draw_scrollbar
&& (num_shown_items < self->view->menu->size)
&& check_scrollbar (self));
int scrollbar_width = self->scrollbar_width;
content_rect.x = box_left_pad;
content_rect.y = box_top_pad;
content_rect.width = self->bounds.width - box_left_pad - box_right_pad;
content_rect.height = self->bounds.height - box_top_pad - box_bottom_pad;
box->set_content_size (box, content_rect.width, content_rect.height);
box->draw (box, 0, 0);
switch (self->scrollbar_slice)
{
case SCROLLBAR_SLICE_WEST:
content_rect.x += self->scrollbar_right_pad;
content_rect.width -= self->scrollbar_right_pad;
break;
case SCROLLBAR_SLICE_CENTER:
if (drawing_scrollbar)
content_rect.width -= scrollbar_width + self->scrollbar_left_pad
+ self->scrollbar_right_pad;
break;
case SCROLLBAR_SLICE_EAST:
content_rect.width -= self->scrollbar_left_pad;
break;
}
grub_gui_set_viewport (&content_rect, &vpsave2);
draw_menu (self, num_shown_items);
grub_gui_restore_viewport (&vpsave2);
if (drawing_scrollbar)
{
content_rect.y += self->scrollbar_top_pad;
content_rect.height -= self->scrollbar_top_pad
+ self->scrollbar_bottom_pad;
content_rect.width = scrollbar_width;
switch (self->scrollbar_slice)
{
case SCROLLBAR_SLICE_WEST:
if (box_left_pad > scrollbar_width)
{
content_rect.x = box_left_pad - scrollbar_width;
content_rect.width = scrollbar_width;
}
else
{
content_rect.x = 0;
content_rect.width = box_left_pad;
}
break;
case SCROLLBAR_SLICE_CENTER:
content_rect.x = self->bounds.width - box_right_pad
- scrollbar_width - self->scrollbar_right_pad;
content_rect.width = scrollbar_width;
break;
case SCROLLBAR_SLICE_EAST:
content_rect.x = self->bounds.width - box_right_pad;
content_rect.width = box_right_pad;
break;
}
grub_gui_set_viewport (&content_rect, &vpsave2);
draw_scrollbar (self,
self->first_shown_index, num_shown_items,
0, self->view->menu->size,
scrollbar_width,
content_rect.height);
grub_gui_restore_viewport (&vpsave2);
}
}
grub_gui_restore_viewport (&vpsave);
}
static void
list_set_parent (void *vself, grub_gui_container_t parent)
{
list_impl_t self = vself;
self->parent = parent;
}
static grub_gui_container_t
list_get_parent (void *vself)
{
list_impl_t self = vself;
return self->parent;
}
static void
list_set_bounds (void *vself, const grub_video_rect_t *bounds)
{
list_impl_t self = vself;
self->bounds = *bounds;
}
static void
list_get_bounds (void *vself, grub_video_rect_t *bounds)
{
list_impl_t self = vself;
*bounds = self->bounds;
}
static void
list_get_minimal_size (void *vself, unsigned *width, unsigned *height)
{
list_impl_t self = vself;
if (check_boxes (self))
{
int boxpad = self->item_padding;
int item_vspace = self->item_spacing;
int item_height = self->item_height;
int num_items = 3;
grub_gfxmenu_box_t box = self->menu_box;
int box_left_pad = box->get_left_pad (box);
int box_top_pad = box->get_top_pad (box);
int box_right_pad = box->get_right_pad (box);
int box_bottom_pad = box->get_bottom_pad (box);
unsigned width_s;
grub_gfxmenu_box_t selbox = self->selected_item_box;
int sel_top_pad = selbox->get_top_pad (selbox);
int sel_bottom_pad = selbox->get_bottom_pad (selbox);
int sel_left_pad = selbox->get_left_pad (selbox);
int sel_right_pad = selbox->get_right_pad (selbox);
grub_gfxmenu_box_t itembox = self->item_box;
int item_top_pad = itembox->get_top_pad (itembox);
int item_bottom_pad = itembox->get_bottom_pad (itembox);
int item_left_pad = itembox->get_left_pad (itembox);
int item_right_pad = itembox->get_right_pad (itembox);
int max_left_pad = grub_max (item_left_pad, sel_left_pad);
int max_right_pad = grub_max (item_right_pad, sel_right_pad);
int max_top_pad = grub_max (item_top_pad, sel_top_pad);
int max_bottom_pad = grub_max (item_bottom_pad, sel_bottom_pad);
*width = grub_font_get_string_width (self->item_font, "Typical OS");
width_s = grub_font_get_string_width (self->selected_item_font,
"Typical OS");
if (*width < width_s)
*width = width_s;
*width += 2 * boxpad + box_left_pad + box_right_pad
+ max_left_pad + max_right_pad
+ self->item_icon_space + self->icon_width;
switch (self->scrollbar_slice)
{
case SCROLLBAR_SLICE_WEST:
*width += self->scrollbar_right_pad;
break;
case SCROLLBAR_SLICE_CENTER:
*width += self->scrollbar_width + self->scrollbar_left_pad
+ self->scrollbar_right_pad;
break;
case SCROLLBAR_SLICE_EAST:
*width += self->scrollbar_left_pad;
break;
}
/* Set the menu box height to fit the items. */
*height = (item_height * num_items
+ item_vspace * (num_items - 1)
+ 2 * boxpad
+ box_top_pad + box_bottom_pad
+ max_top_pad + max_bottom_pad);
}
else
{
*width = 0;
*height = 0;
}
}
static grub_err_t
list_set_property (void *vself, const char *name, const char *value)
{
list_impl_t self = vself;
if (grub_strcmp (name, "item_font") == 0)
{
self->item_font = grub_font_get (value);
if (self->selected_item_font_inherit)
self->selected_item_font = self->item_font;
}
else if (grub_strcmp (name, "selected_item_font") == 0)
{
if (! value || grub_strcmp (value, "inherit") == 0)
{
self->selected_item_font = self->item_font;
self->selected_item_font_inherit = 1;
}
else
{
self->selected_item_font = grub_font_get (value);
self->selected_item_font_inherit = 0;
}
}
else if (grub_strcmp (name, "item_color") == 0)
{
grub_video_rgba_color_t color;
if (grub_video_parse_color (value, &color) == GRUB_ERR_NONE)
{
self->item_color = color;
if (self->selected_item_color_inherit)
self->selected_item_color = self->item_color;
}
}
else if (grub_strcmp (name, "selected_item_color") == 0)
{
if (! value || grub_strcmp (value, "inherit") == 0)
{
self->selected_item_color = self->item_color;
self->selected_item_color_inherit = 1;
}
else
{
grub_video_rgba_color_t color;
if (grub_video_parse_color (value, &color)
== GRUB_ERR_NONE)
{
self->selected_item_color = color;
self->selected_item_color_inherit = 0;
}
}
}
else if (grub_strcmp (name, "icon_width") == 0)
{
self->icon_width = grub_strtol (value, 0, 10);
grub_gfxmenu_icon_manager_set_icon_size (self->icon_manager,
self->icon_width,
self->icon_height);
}
else if (grub_strcmp (name, "icon_height") == 0)
{
self->icon_height = grub_strtol (value, 0, 10);
grub_gfxmenu_icon_manager_set_icon_size (self->icon_manager,
self->icon_width,
self->icon_height);
}
else if (grub_strcmp (name, "item_height") == 0)
{
self->item_height = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "item_padding") == 0)
{
self->item_padding = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "item_icon_space") == 0)
{
self->item_icon_space = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "item_spacing") == 0)
{
self->item_spacing = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "visible") == 0)
{
self->visible = grub_strcmp (value, "false") != 0;
}
else if (grub_strcmp (name, "menu_pixmap_style") == 0)
{
self->need_to_recreate_boxes = 1;
grub_free (self->menu_box_pattern);
self->menu_box_pattern = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "item_pixmap_style") == 0)
{
self->need_to_recreate_boxes = 1;
grub_free (self->item_box_pattern);
self->item_box_pattern = value ? grub_strdup (value) : 0;
if (self->selected_item_box_pattern_inherit)
{
grub_free (self->selected_item_box_pattern);
self->selected_item_box_pattern = value ? grub_strdup (value) : 0;
}
}
else if (grub_strcmp (name, "selected_item_pixmap_style") == 0)
{
if (!value || grub_strcmp (value, "inherit") == 0)
{
grub_free (self->selected_item_box_pattern);
char *tmp = self->item_box_pattern;
self->selected_item_box_pattern = tmp ? grub_strdup (tmp) : 0;
self->selected_item_box_pattern_inherit = 1;
}
else
{
self->need_to_recreate_boxes = 1;
grub_free (self->selected_item_box_pattern);
self->selected_item_box_pattern = value ? grub_strdup (value) : 0;
self->selected_item_box_pattern_inherit = 0;
}
}
else if (grub_strcmp (name, "scrollbar_frame") == 0)
{
self->need_to_recreate_scrollbar = 1;
grub_free (self->scrollbar_frame_pattern);
self->scrollbar_frame_pattern = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "scrollbar_thumb") == 0)
{
self->need_to_recreate_scrollbar = 1;
grub_free (self->scrollbar_thumb_pattern);
self->scrollbar_thumb_pattern = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "scrollbar_thumb_overlay") == 0)
{
self->scrollbar_thumb_overlay = grub_strcmp (value, "true") == 0;
}
else if (grub_strcmp (name, "scrollbar_width") == 0)
{
self->scrollbar_width = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "scrollbar_slice") == 0)
{
if (grub_strcmp (value, "west") == 0)
self->scrollbar_slice = SCROLLBAR_SLICE_WEST;
else if (grub_strcmp (value, "center") == 0)
self->scrollbar_slice = SCROLLBAR_SLICE_CENTER;
else if (grub_strcmp (value, "east") == 0)
self->scrollbar_slice = SCROLLBAR_SLICE_EAST;
}
else if (grub_strcmp (name, "scrollbar_left_pad") == 0)
{
self->scrollbar_left_pad = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "scrollbar_right_pad") == 0)
{
self->scrollbar_right_pad = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "scrollbar_top_pad") == 0)
{
self->scrollbar_top_pad = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "scrollbar_bottom_pad") == 0)
{
self->scrollbar_bottom_pad = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "scrollbar") == 0)
{
self->draw_scrollbar = grub_strcmp (value, "false") != 0;
}
else if (grub_strcmp (name, "theme_dir") == 0)
{
self->need_to_recreate_boxes = 1;
grub_free (self->theme_dir);
self->theme_dir = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "id") == 0)
{
grub_free (self->id);
if (value)
self->id = grub_strdup (value);
else
self->id = 0;
}
return grub_errno;
}
/* Set necessary information that the gfxmenu view provides. */
static void
list_set_view_info (void *vself,
grub_gfxmenu_view_t view)
{
list_impl_t self = vself;
grub_gfxmenu_icon_manager_set_theme_path (self->icon_manager,
view->theme_path);
self->view = view;
}
/* Refresh list variables */
static void
list_refresh_info (void *vself,
grub_gfxmenu_view_t view)
{
list_impl_t self = vself;
if (view->nested)
self->first_shown_index = 0;
}
static struct grub_gui_component_ops list_comp_ops =
{
.destroy = list_destroy,
.get_id = list_get_id,
.is_instance = list_is_instance,
.paint = list_paint,
.set_parent = list_set_parent,
.get_parent = list_get_parent,
.set_bounds = list_set_bounds,
.get_bounds = list_get_bounds,
.get_minimal_size = list_get_minimal_size,
.set_property = list_set_property
};
static struct grub_gui_list_ops list_ops =
{
.set_view_info = list_set_view_info,
.refresh_list = list_refresh_info
};
grub_gui_component_t
grub_gui_list_new (void)
{
list_impl_t self;
grub_font_t default_font;
grub_video_rgba_color_t default_fg_color;
self = grub_zalloc (sizeof (*self));
if (! self)
return 0;
self->list.ops = &list_ops;
self->list.component.ops = &list_comp_ops;
self->visible = 1;
default_font = grub_font_get ("Unknown Regular 16");
default_fg_color = grub_video_rgba_color_rgb (0, 0, 0);
self->icon_width = 32;
self->icon_height = 32;
self->item_height = 42;
self->item_padding = 14;
self->item_icon_space = 4;
self->item_spacing = 16;
self->item_font = default_font;
self->selected_item_font_inherit = 1; /* Default to using the item_font. */
self->selected_item_font = default_font;
self->item_color = default_fg_color;
self->selected_item_color_inherit = 1; /* Default to using the item_color. */
self->selected_item_color = default_fg_color;
self->draw_scrollbar = 1;
self->need_to_recreate_scrollbar = 1;
self->scrollbar_frame = 0;
self->scrollbar_thumb = 0;
self->scrollbar_frame_pattern = 0;
self->scrollbar_thumb_pattern = 0;
self->scrollbar_thumb_overlay = 0;
self->scrollbar_width = 16;
self->scrollbar_slice = SCROLLBAR_SLICE_EAST;
self->scrollbar_left_pad = 2;
self->scrollbar_right_pad = 0;
self->scrollbar_top_pad = 0;
self->scrollbar_bottom_pad = 0;
self->first_shown_index = 0;
self->need_to_recreate_boxes = 0;
self->theme_dir = 0;
self->menu_box_pattern = 0;
self->item_box_pattern = 0;
self->selected_item_box_pattern_inherit = 1;/*Default to using the item_box.*/
self->selected_item_box_pattern = 0;
self->menu_box = grub_gfxmenu_create_box (0, 0);
self->item_box = grub_gfxmenu_create_box (0, 0);
self->selected_item_box = grub_gfxmenu_create_box (0, 0);
self->icon_manager = grub_gfxmenu_icon_manager_new ();
if (! self->icon_manager)
{
self->list.component.ops->destroy (self);
return 0;
}
grub_gfxmenu_icon_manager_set_icon_size (self->icon_manager,
self->icon_width,
self->icon_height);
return (grub_gui_component_t) self;
}
GRUB2/MOD_SRC/grub-2.04/grub-core/gfxmenu/view.c
View file @ 15b8b1f3
...@@ -37,6 +37,7 @@ ...@@ -37,6 +37,7 @@
#include <grub/gui_string_util.h> #include <grub/gui_string_util.h>
#include <grub/icon_manager.h> #include <grub/icon_manager.h>
#include <grub/i18n.h> #include <grub/i18n.h>
#include <grub/charset.h>
static void static void
init_terminal (grub_gfxmenu_view_t view); init_terminal (grub_gfxmenu_view_t view);
...@@ -142,6 +143,8 @@ grub_gfxmenu_view_destroy (grub_gfxmenu_view_t view) ...@@ -142,6 +143,8 @@ grub_gfxmenu_view_destroy (grub_gfxmenu_view_t view)
grub_free (view->title_text); grub_free (view->title_text);
grub_free (view->progress_message_text); grub_free (view->progress_message_text);
grub_free (view->theme_path); grub_free (view->theme_path);
if (view->menu_title_offset)
grub_free (view->menu_title_offset);
if (view->canvas) if (view->canvas)
view->canvas->component.ops->destroy (view->canvas); view->canvas->component.ops->destroy (view->canvas);
grub_free (view); grub_free (view);
...@@ -428,6 +431,27 @@ grub_gfxmenu_set_chosen_entry (int entry, void *data) ...@@ -428,6 +431,27 @@ grub_gfxmenu_set_chosen_entry (int entry, void *data)
} }
void
grub_gfxmenu_scroll_chosen_entry (void *data, int diren)
{
grub_gfxmenu_view_t view = data;
const char *item_title;
int off;
if (!view->menu->size)
return;
item_title = grub_menu_get_entry (view->menu, view->selected)->title;
off = view->menu_title_offset[view->selected] + diren;
if (off < 0
|| off > grub_utf8_get_num_code (item_title, grub_strlen(item_title)))
return;
view->menu_title_offset[view->selected] = off;
grub_gfxmenu_redraw_menu (view);
}
static void static void
grub_gfxmenu_draw_terminal_box (void) grub_gfxmenu_draw_terminal_box (void)
{ {
......
GRUB2/MOD_SRC/grub-2.04/grub-core/normal/charset.c 0 → 100644
View file @ 15b8b1f3
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Current problems with Unicode rendering:
- B and BN bidi type characters (ignored)
- Mc type characters with combining class 0 (poorly combined)
- Mn type characters with combining class 0 (poorly combined)
- Me type characters with combining class 0 (poorly combined)
- Cf type characters (ignored)
- Cc type characters (ignored)
- Line-breaking rules (e.g. Zs type characters)
- Indic languages
- non-Semitic shaping (rarely used)
- Zl and Zp characters
- Combining characters of types 7, 8, 9, 21, 35, 36, 84, 91, 103, 107,
118, 122, 129, 130, 132, 218, 224, 226, 233, 234
- Private use characters (not really a problem)
- Variations (no font support)
- Vertical text
- Ligatures
Font information ignored:
- Kerning
- Justification data
- Glyph posititioning
- Baseline data
Most underline diacritics aren't displayed in gfxterm
*/
#include <grub/charset.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/unicode.h>
#include <grub/term.h>
#include <grub/normal.h>
#if HAVE_FONT_SOURCE
#include "widthspec.h"
#endif
/* Returns -2 if not enough space, -1 on invalid character. */
grub_ssize_t
grub_encode_utf8_character (grub_uint8_t *dest, grub_uint8_t *destend,
grub_uint32_t code)
{
if (dest >= destend)
return -2;
if (code <= 0x007F)
{
*dest++ = code;
return 1;
}
if (code <= 0x07FF)
{
if (dest + 1 >= destend)
return -2;
*dest++ = (code >> 6) | 0xC0;
*dest++ = (code & 0x3F) | 0x80;
return 2;
}
if ((code >= 0xDC00 && code <= 0xDFFF)
|| (code >= 0xD800 && code <= 0xDBFF))
{
/* No surrogates in UCS-4... */
return -1;
}
if (code < 0x10000)
{
if (dest + 2 >= destend)
return -2;
*dest++ = (code >> 12) | 0xE0;
*dest++ = ((code >> 6) & 0x3F) | 0x80;
*dest++ = (code & 0x3F) | 0x80;
return 3;
}
{
if (dest + 3 >= destend)
return -2;
*dest++ = (code >> 18) | 0xF0;
*dest++ = ((code >> 12) & 0x3F) | 0x80;
*dest++ = ((code >> 6) & 0x3F) | 0x80;
*dest++ = (code & 0x3F) | 0x80;
return 4;
}
}
/* Convert UCS-4 to UTF-8. */
grub_size_t
grub_ucs4_to_utf8 (const grub_uint32_t *src, grub_size_t size,
grub_uint8_t *dest, grub_size_t destsize)
{
/* Keep last char for \0. */
grub_uint8_t *destend = dest + destsize - 1;
grub_uint8_t *dest0 = dest;
while (size-- && dest < destend)
{
grub_uint32_t code = *src++;
grub_ssize_t s;
s = grub_encode_utf8_character (dest, destend, code);
if (s == -2)
break;
if (s == -1)
{
*dest++ = '?';
continue;
}
dest += s;
}
*dest = 0;
return dest - dest0;
}
/* Returns the number of bytes the string src would occupy is converted
to UTF-8, excluding trailing \0. */
grub_size_t
grub_get_num_of_utf8_bytes (const grub_uint32_t *src, grub_size_t size)
{
grub_size_t remaining;
const grub_uint32_t *ptr;
grub_size_t cnt = 0;
remaining = size;
ptr = src;
while (remaining--)
{
grub_uint32_t code = *ptr++;
if (code <= 0x007F)
cnt++;
else if (code <= 0x07FF)
cnt += 2;
else if ((code >= 0xDC00 && code <= 0xDFFF)
|| (code >= 0xD800 && code <= 0xDBFF))
/* No surrogates in UCS-4... */
cnt++;
else if (code < 0x10000)
cnt += 3;
else
cnt += 4;
}
return cnt;
}
/* Convert UCS-4 to UTF-8. */
char *
grub_ucs4_to_utf8_alloc (const grub_uint32_t *src, grub_size_t size)
{
grub_uint8_t *ret;
grub_size_t cnt = grub_get_num_of_utf8_bytes (src, size) + 1;
ret = grub_malloc (cnt);
if (!ret)
return 0;
grub_ucs4_to_utf8 (src, size, ret, cnt);
return (char *) ret;
}
int
grub_is_valid_utf8 (const grub_uint8_t *src, grub_size_t srcsize)
{
int count = 0;
grub_uint32_t code = 0;
while (srcsize)
{
if (srcsize != (grub_size_t)-1)
srcsize--;
if (!grub_utf8_process (*src++, &code, &count))
return 0;
if (count != 0)
continue;
if (code == 0)
return 1;
if (code > GRUB_UNICODE_LAST_VALID)
return 0;
}
return 1;
}
grub_ssize_t
grub_utf8_to_ucs4_alloc (const char *msg, grub_uint32_t **unicode_msg,
grub_uint32_t **last_position)
{
grub_size_t msg_len = grub_strlen (msg);
*unicode_msg = grub_malloc (msg_len * sizeof (grub_uint32_t));
if (!*unicode_msg)
return -1;
msg_len = grub_utf8_to_ucs4 (*unicode_msg, msg_len,
(grub_uint8_t *) msg, -1, 0);
if (last_position)
*last_position = *unicode_msg + msg_len;
return msg_len;
}
/* Convert a (possibly null-terminated) UTF-8 string of at most SRCSIZE
bytes (if SRCSIZE is -1, it is ignored) in length to a UCS-4 string.
Return the number of characters converted. DEST must be able to hold
at least DESTSIZE characters.
If SRCEND is not NULL, then *SRCEND is set to the next byte after the
last byte used in SRC. */
grub_size_t
grub_utf8_to_ucs4 (grub_uint32_t *dest, grub_size_t destsize,
const grub_uint8_t *src, grub_size_t srcsize,
const grub_uint8_t **srcend)
{
grub_uint32_t *p = dest;
int count = 0;
grub_uint32_t code = 0;
if (srcend)
*srcend = src;
while (srcsize && destsize)
{
int was_count = count;
if (srcsize != (grub_size_t)-1)
srcsize--;
if (!grub_utf8_process (*src++, &code, &count))
{
code = '?';
count = 0;
/* Character c may be valid, don't eat it. */
if (was_count)
src--;
}
if (count != 0)
continue;
if (code == 0)
break;
*p++ = code;
destsize--;
}
if (srcend)
*srcend = src;
return p - dest;
}
static grub_uint8_t *join_types = NULL;
static void
unpack_join (void)
{
unsigned i;
struct grub_unicode_compact_range *cur;
join_types = grub_zalloc (GRUB_UNICODE_MAX_CACHED_CHAR);
if (!join_types)
{
grub_errno = GRUB_ERR_NONE;
return;
}
for (cur = grub_unicode_compact; cur->len; cur++)
for (i = cur->start; i < cur->start + (unsigned) cur->len
&& i < GRUB_UNICODE_MAX_CACHED_CHAR; i++)
join_types[i] = cur->join_type;
}
static grub_uint8_t *bidi_types = NULL;
static void
unpack_bidi (void)
{
unsigned i;
struct grub_unicode_compact_range *cur;
bidi_types = grub_zalloc (GRUB_UNICODE_MAX_CACHED_CHAR);
if (!bidi_types)
{
grub_errno = GRUB_ERR_NONE;
return;
}
for (cur = grub_unicode_compact; cur->len; cur++)
for (i = cur->start; i < cur->start + (unsigned) cur->len
&& i < GRUB_UNICODE_MAX_CACHED_CHAR; i++)
if (cur->bidi_mirror)
bidi_types[i] = cur->bidi_type | 0x80;
else
bidi_types[i] = cur->bidi_type | 0x00;
}
static inline enum grub_bidi_type
get_bidi_type (grub_uint32_t c)
{
struct grub_unicode_compact_range *cur;
if (!bidi_types)
unpack_bidi ();
if (bidi_types && c < GRUB_UNICODE_MAX_CACHED_CHAR)
return bidi_types[c] & 0x7f;
for (cur = grub_unicode_compact; cur->len; cur++)
if (cur->start <= c && c < cur->start + (unsigned) cur->len)
return cur->bidi_type;
return GRUB_BIDI_TYPE_L;
}
static inline enum grub_join_type
get_join_type (grub_uint32_t c)
{
struct grub_unicode_compact_range *cur;
if (!join_types)
unpack_join ();
if (join_types && c < GRUB_UNICODE_MAX_CACHED_CHAR)
return join_types[c];
for (cur = grub_unicode_compact; cur->len; cur++)
if (cur->start <= c && c < cur->start + (unsigned) cur->len)
return cur->join_type;
return GRUB_JOIN_TYPE_NONJOINING;
}
static inline int
is_mirrored (grub_uint32_t c)
{
struct grub_unicode_compact_range *cur;
if (!bidi_types)
unpack_bidi ();
if (bidi_types && c < GRUB_UNICODE_MAX_CACHED_CHAR)
return !!(bidi_types[c] & 0x80);
for (cur = grub_unicode_compact; cur->len; cur++)
if (cur->start <= c && c < cur->start + (unsigned) cur->len)
return cur->bidi_mirror;
return 0;
}
enum grub_comb_type
grub_unicode_get_comb_type (grub_uint32_t c)
{
static grub_uint8_t *comb_types = NULL;
struct grub_unicode_compact_range *cur;
if (!comb_types)
{
unsigned i;
comb_types = grub_zalloc (GRUB_UNICODE_MAX_CACHED_CHAR);
if (comb_types)
for (cur = grub_unicode_compact; cur->len; cur++)
for (i = cur->start; i < cur->start + (unsigned) cur->len
&& i < GRUB_UNICODE_MAX_CACHED_CHAR; i++)
comb_types[i] = cur->comb_type;
else
grub_errno = GRUB_ERR_NONE;
}
if (comb_types && c < GRUB_UNICODE_MAX_CACHED_CHAR)
return comb_types[c];
for (cur = grub_unicode_compact; cur->len; cur++)
if (cur->start <= c && c < cur->start + (unsigned) cur->len)
return cur->comb_type;
return GRUB_UNICODE_COMB_NONE;
}
#if HAVE_FONT_SOURCE
grub_size_t
grub_unicode_estimate_width (const struct grub_unicode_glyph *c)
{
if (grub_unicode_get_comb_type (c->base))
return 0;
if (widthspec[c->base >> 3] & (1 << (c->base & 7)))
return 2;
else
return 1;
}
#endif
static inline int
is_type_after (enum grub_comb_type a, enum grub_comb_type b)
{
/* Shadda is numerically higher than most of Arabic diacritics but has
to be rendered before them. */
if (a == GRUB_UNICODE_COMB_ARABIC_SHADDA
&& b <= GRUB_UNICODE_COMB_ARABIC_KASRA
&& b >= GRUB_UNICODE_COMB_ARABIC_FATHATAN)
return 0;
if (b == GRUB_UNICODE_COMB_ARABIC_SHADDA
&& a <= GRUB_UNICODE_COMB_ARABIC_KASRA
&& a >= GRUB_UNICODE_COMB_ARABIC_FATHATAN)
return 1;
return a > b;
}
grub_size_t
grub_unicode_aglomerate_comb (const grub_uint32_t *in, grub_size_t inlen,
struct grub_unicode_glyph *out)
{
int haveout = 0;
const grub_uint32_t *ptr;
unsigned last_comb_pointer = 0;
grub_memset (out, 0, sizeof (*out));
if (inlen && grub_iscntrl (*in))
{
out->base = *in;
out->variant = 0;
out->attributes = 0;
out->ncomb = 0;
out->estimated_width = 1;
return 1;
}
for (ptr = in; ptr < in + inlen; ptr++)
{
/* Variation selectors >= 17 are outside of BMP and SMP.
Handle variation selectors first to avoid potentially costly lookups.
*/
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_1
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_16)
{
if (haveout)
out->variant = *ptr - GRUB_UNICODE_VARIATION_SELECTOR_1 + 1;
continue;
}
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_17
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_256)
{
if (haveout)
out->variant = *ptr - GRUB_UNICODE_VARIATION_SELECTOR_17 + 17;
continue;
}
enum grub_comb_type comb_type;
comb_type = grub_unicode_get_comb_type (*ptr);
if (comb_type)
{
struct grub_unicode_combining *n;
unsigned j;
if (!haveout)
continue;
if (comb_type == GRUB_UNICODE_COMB_MC
|| comb_type == GRUB_UNICODE_COMB_ME
|| comb_type == GRUB_UNICODE_COMB_MN)
last_comb_pointer = out->ncomb;
if (out->ncomb + 1 <= (int) ARRAY_SIZE (out->combining_inline))
n = out->combining_inline;
else if (out->ncomb > (int) ARRAY_SIZE (out->combining_inline))
{
n = grub_realloc (out->combining_ptr,
sizeof (n[0]) * (out->ncomb + 1));
if (!n)
{
grub_errno = GRUB_ERR_NONE;
continue;
}
out->combining_ptr = n;
}
else
{
n = grub_malloc (sizeof (n[0]) * (out->ncomb + 1));
if (!n)
{
grub_errno = GRUB_ERR_NONE;
continue;
}
grub_memcpy (n, out->combining_inline,
sizeof (out->combining_inline));
out->combining_ptr = n;
}
for (j = last_comb_pointer; j < out->ncomb; j++)
if (is_type_after (n[j].type, comb_type))
break;
grub_memmove (n + j + 1,
n + j,
(out->ncomb - j)
* sizeof (n[0]));
n[j].code = *ptr;
n[j].type = comb_type;
out->ncomb++;
continue;
}
if (haveout)
return ptr - in;
haveout = 1;
out->base = *ptr;
out->variant = 0;
out->attributes = 0;
out->ncomb = 0;
out->estimated_width = 1;
}
return ptr - in;
}
static void
revert (struct grub_unicode_glyph *visual,
struct grub_term_pos *pos,
unsigned start, unsigned end)
{
struct grub_unicode_glyph t;
unsigned i;
int a = 0, b = 0;
if (pos)
{
a = pos[visual[start].orig_pos].x;
b = pos[visual[end].orig_pos].x;
}
for (i = 0; i < (end - start) / 2 + 1; i++)
{
t = visual[start + i];
visual[start + i] = visual[end - i];
visual[end - i] = t;
if (pos)
{
pos[visual[start + i].orig_pos].x = a + b - pos[visual[start + i].orig_pos].x;
pos[visual[end - i].orig_pos].x = a + b - pos[visual[end - i].orig_pos].x;
}
}
}
static grub_ssize_t
bidi_line_wrap (struct grub_unicode_glyph *visual_out,
struct grub_unicode_glyph *visual,
grub_size_t visual_len,
grub_size_t (*getcharwidth) (const struct grub_unicode_glyph *visual, void *getcharwidth_arg),
void *getcharwidth_arg,
grub_size_t maxwidth, grub_size_t startwidth,
grub_uint32_t contchar,
struct grub_term_pos *pos, int primitive_wrap,
grub_size_t log_end)
{
struct grub_unicode_glyph *outptr = visual_out;
unsigned line_start = 0;
grub_ssize_t line_width;
unsigned k;
grub_ssize_t last_space = -1;
grub_ssize_t last_space_width = 0;
int lines = 0;
if (!visual_len)
return 0;
if (startwidth >= maxwidth && (grub_ssize_t) maxwidth > 0)
{
if (contchar)
{
grub_memset (outptr, 0, sizeof (visual[0]));
outptr->base = contchar;
outptr++;
}
grub_memset (outptr, 0, sizeof (visual[0]));
outptr->base = '\n';
outptr++;
startwidth = 0;
}
line_width = startwidth;
for (k = 0; k <= visual_len; k++)
{
grub_ssize_t last_width = 0;
if (pos && k != visual_len)
{
pos[visual[k].orig_pos].x = line_width;
pos[visual[k].orig_pos].y = lines;
pos[visual[k].orig_pos].valid = 1;
}
if (k == visual_len && pos)
{
pos[log_end].x = line_width;
pos[log_end].y = lines;
pos[log_end].valid = 1;
}
if (getcharwidth && k != visual_len)
line_width += last_width = getcharwidth (&visual[k], getcharwidth_arg);
if (k != visual_len && (visual[k].base == ' '
|| visual[k].base == '\t')
&& !primitive_wrap)
{
last_space = k;
last_space_width = line_width;
}
if (((grub_ssize_t) maxwidth > 0
&& line_width > (grub_ssize_t) maxwidth) || k == visual_len)
{
unsigned min_odd_level = 0xffffffff;
unsigned max_level = 0;
unsigned kk = k;
lines++;
if (k != visual_len && last_space > (signed) line_start)
{
kk = last_space;
line_width -= last_space_width;
}
else if (k != visual_len && line_start == 0 && startwidth != 0
&& !primitive_wrap && lines == 1
&& line_width - startwidth < maxwidth)
{
kk = 0;
line_width -= startwidth;
}
else
line_width = last_width;
{
unsigned i;
for (i = line_start; i < kk; i++)
{
if (visual[i].bidi_level > max_level)
max_level = visual[i].bidi_level;
if (visual[i].bidi_level < min_odd_level && (visual[i].bidi_level & 1))
min_odd_level = visual[i].bidi_level;
}
}
{
unsigned j;
/* FIXME: can be optimized. */
for (j = max_level; j > min_odd_level - 1; j--)
{
unsigned in = line_start;
unsigned i;
for (i = line_start; i < kk; i++)
{
if (i != line_start && visual[i].bidi_level >= j
&& visual[i-1].bidi_level < j)
in = i;
if (visual[i].bidi_level >= j && (i + 1 == kk
|| visual[i+1].bidi_level < j))
revert (visual, pos, in, i);
}
}
}
{
unsigned i;
for (i = line_start; i < kk; i++)
{
if (is_mirrored (visual[i].base) && visual[i].bidi_level)
visual[i].attributes |= GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR;
if ((visual[i].attributes & GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN)
&& visual[i].bidi_level)
{
int left, right;
left = visual[i].attributes
& (GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED
| GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT);
right = visual[i].attributes
& (GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED
| GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT);
visual[i].attributes &= ~GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN;
left <<= GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN_LEFT_TO_RIGHT_SHIFT;
right >>= GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN_LEFT_TO_RIGHT_SHIFT;
visual[i].attributes |= (left | right);
}
}
}
{
int left_join = 0;
unsigned i;
for (i = line_start; i < kk; i++)
{
enum grub_join_type join_type = get_join_type (visual[i].base);
if (!(visual[i].attributes
& GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT)
&& (join_type == GRUB_JOIN_TYPE_LEFT
|| join_type == GRUB_JOIN_TYPE_DUAL))
{
if (left_join)
visual[i].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED;
else
visual[i].attributes
&= ~GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED;
}
if (join_type == GRUB_JOIN_TYPE_NONJOINING
|| join_type == GRUB_JOIN_TYPE_LEFT)
left_join = 0;
if (join_type == GRUB_JOIN_TYPE_RIGHT
|| join_type == GRUB_JOIN_TYPE_DUAL
|| join_type == GRUB_JOIN_TYPE_CAUSING)
left_join = 1;
}
}
{
int right_join = 0;
signed i;
for (i = kk - 1; i >= 0 && (unsigned) i + 1 > line_start;
i--)
{
enum grub_join_type join_type = get_join_type (visual[i].base);
if (!(visual[i].attributes
& GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT)
&& (join_type == GRUB_JOIN_TYPE_RIGHT
|| join_type == GRUB_JOIN_TYPE_DUAL))
{
if (right_join)
visual[i].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED;
else
visual[i].attributes
&= ~GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED;
}
if (join_type == GRUB_JOIN_TYPE_NONJOINING
|| join_type == GRUB_JOIN_TYPE_RIGHT)
right_join = 0;
if (join_type == GRUB_JOIN_TYPE_LEFT
|| join_type == GRUB_JOIN_TYPE_DUAL
|| join_type == GRUB_JOIN_TYPE_CAUSING)
right_join = 1;
}
}
grub_memcpy (outptr, &visual[line_start],
(kk - line_start) * sizeof (visual[0]));
outptr += kk - line_start;
if (kk != visual_len)
{
if (contchar)
{
grub_memset (outptr, 0, sizeof (visual[0]));
outptr->base = contchar;
outptr++;
}
grub_memset (outptr, 0, sizeof (visual[0]));
outptr->base = '\n';
outptr++;
}
if ((signed) kk == last_space)
kk++;
line_start = kk;
if (pos && kk != visual_len)
{
pos[visual[kk].orig_pos].x = 0;
pos[visual[kk].orig_pos].y = lines;
}
}
}
return outptr - visual_out;
}
static grub_ssize_t
grub_bidi_line_logical_to_visual (const grub_uint32_t *logical,
grub_size_t logical_len,
struct grub_unicode_glyph *visual_out,
grub_size_t (*getcharwidth) (const struct grub_unicode_glyph *visual, void *getcharwidth_arg),
void *getcharwidth_arg,
grub_size_t maxwidth, grub_size_t startwidth,
grub_uint32_t contchar,
struct grub_term_pos *pos,
int primitive_wrap,
grub_size_t log_end)
{
enum grub_bidi_type type = GRUB_BIDI_TYPE_L;
enum override_status {OVERRIDE_NEUTRAL = 0, OVERRIDE_R, OVERRIDE_L};
unsigned base_level;
enum override_status cur_override;
unsigned i;
unsigned stack_level[GRUB_BIDI_MAX_EXPLICIT_LEVEL + 3];
enum override_status stack_override[GRUB_BIDI_MAX_EXPLICIT_LEVEL + 3];
unsigned stack_depth = 0;
unsigned invalid_pushes = 0;
unsigned visual_len = 0;
unsigned run_start, run_end;
struct grub_unicode_glyph *visual;
unsigned cur_level;
int bidi_needed = 0;
#define push_stack(new_override, new_level) \
{ \
if (new_level > GRUB_BIDI_MAX_EXPLICIT_LEVEL) \
{ \
invalid_pushes++; \
} \
else \
{ \
stack_level[stack_depth] = cur_level; \
stack_override[stack_depth] = cur_override; \
stack_depth++; \
cur_level = new_level; \
cur_override = new_override; \
} \
}
#define pop_stack() \
{ \
if (invalid_pushes) \
{ \
invalid_pushes--; \
} \
else if (stack_depth) \
{ \
stack_depth--; \
cur_level = stack_level[stack_depth]; \
cur_override = stack_override[stack_depth]; \
} \
}
visual = grub_malloc (sizeof (visual[0]) * logical_len);
if (!visual)
return -1;
for (i = 0; i < logical_len; i++)
{
type = get_bidi_type (logical[i]);
if (type == GRUB_BIDI_TYPE_L || type == GRUB_BIDI_TYPE_AL
|| type == GRUB_BIDI_TYPE_R)
break;
}
if (type == GRUB_BIDI_TYPE_R || type == GRUB_BIDI_TYPE_AL)
base_level = 1;
else
base_level = 0;
cur_level = base_level;
cur_override = OVERRIDE_NEUTRAL;
{
const grub_uint32_t *lptr;
enum {JOIN_DEFAULT, NOJOIN, JOIN_FORCE} join_state = JOIN_DEFAULT;
int zwj_propagate_to_previous = 0;
for (lptr = logical; lptr < logical + logical_len;)
{
grub_size_t p;
if (*lptr == GRUB_UNICODE_ZWJ)
{
if (zwj_propagate_to_previous)
{
visual[visual_len - 1].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT
| GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED;
}
zwj_propagate_to_previous = 0;
join_state = JOIN_FORCE;
lptr++;
continue;
}
if (*lptr == GRUB_UNICODE_ZWNJ)
{
if (zwj_propagate_to_previous)
{
visual[visual_len - 1].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT;
visual[visual_len - 1].attributes
&= ~GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED;
}
zwj_propagate_to_previous = 0;
join_state = NOJOIN;
lptr++;
continue;
}
/* The tags: deprecated, never used. */
if (*lptr >= GRUB_UNICODE_TAG_START && *lptr <= GRUB_UNICODE_TAG_END)
continue;
p = grub_unicode_aglomerate_comb (lptr, logical + logical_len - lptr,
&visual[visual_len]);
visual[visual_len].orig_pos = lptr - logical;
type = get_bidi_type (visual[visual_len].base);
switch (type)
{
case GRUB_BIDI_TYPE_RLE:
bidi_needed = 1;
push_stack (cur_override, (cur_level | 1) + 1);
break;
case GRUB_BIDI_TYPE_RLO:
bidi_needed = 1;
push_stack (OVERRIDE_R, (cur_level | 1) + 1);
break;
case GRUB_BIDI_TYPE_LRE:
push_stack (cur_override, (cur_level & ~1) + 2);
break;
case GRUB_BIDI_TYPE_LRO:
push_stack (OVERRIDE_L, (cur_level & ~1) + 2);
break;
case GRUB_BIDI_TYPE_PDF:
pop_stack ();
break;
case GRUB_BIDI_TYPE_BN:
break;
case GRUB_BIDI_TYPE_R:
case GRUB_BIDI_TYPE_AL:
bidi_needed = 1;
/* Fallthrough. */
default:
{
if (join_state == JOIN_FORCE)
{
visual[visual_len].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT
| GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED;
}
if (join_state == NOJOIN)
{
visual[visual_len].attributes
|= GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT;
visual[visual_len].attributes
&= ~GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED;
}
join_state = JOIN_DEFAULT;
zwj_propagate_to_previous = 1;
visual[visual_len].bidi_level = cur_level;
if (cur_override != OVERRIDE_NEUTRAL)
visual[visual_len].bidi_type =
(cur_override == OVERRIDE_L) ? GRUB_BIDI_TYPE_L
: GRUB_BIDI_TYPE_R;
else
visual[visual_len].bidi_type = type;
visual_len++;
}
}
lptr += p;
}
}
if (bidi_needed)
{
for (run_start = 0; run_start < visual_len; run_start = run_end)
{
unsigned prev_level, next_level, cur_run_level;
unsigned last_type, last_strong_type;
for (run_end = run_start; run_end < visual_len &&
visual[run_end].bidi_level == visual[run_start].bidi_level; run_end++);
if (run_start == 0)
prev_level = base_level;
else
prev_level = visual[run_start - 1].bidi_level;
if (run_end == visual_len)
next_level = base_level;
else
next_level = visual[run_end].bidi_level;
cur_run_level = visual[run_start].bidi_level;
if (prev_level & 1)
last_type = GRUB_BIDI_TYPE_R;
else
last_type = GRUB_BIDI_TYPE_L;
last_strong_type = last_type;
for (i = run_start; i < run_end; i++)
{
switch (visual[i].bidi_type)
{
case GRUB_BIDI_TYPE_NSM:
visual[i].bidi_type = last_type;
break;
case GRUB_BIDI_TYPE_EN:
if (last_strong_type == GRUB_BIDI_TYPE_AL)
visual[i].bidi_type = GRUB_BIDI_TYPE_AN;
break;
case GRUB_BIDI_TYPE_L:
case GRUB_BIDI_TYPE_R:
last_strong_type = visual[i].bidi_type;
break;
case GRUB_BIDI_TYPE_ES:
if (last_type == GRUB_BIDI_TYPE_EN
&& i + 1 < run_end
&& visual[i + 1].bidi_type == GRUB_BIDI_TYPE_EN)
visual[i].bidi_type = GRUB_BIDI_TYPE_EN;
else
visual[i].bidi_type = GRUB_BIDI_TYPE_ON;
break;
case GRUB_BIDI_TYPE_ET:
{
unsigned j;
if (last_type == GRUB_BIDI_TYPE_EN)
{
visual[i].bidi_type = GRUB_BIDI_TYPE_EN;
break;
}
for (j = i; j < run_end
&& visual[j].bidi_type == GRUB_BIDI_TYPE_ET; j++);
if (j != run_end && visual[j].bidi_type == GRUB_BIDI_TYPE_EN)
{
for (; i < run_end
&& visual[i].bidi_type == GRUB_BIDI_TYPE_ET; i++)
visual[i].bidi_type = GRUB_BIDI_TYPE_EN;
i--;
break;
}
for (; i < run_end
&& visual[i].bidi_type == GRUB_BIDI_TYPE_ET; i++)
visual[i].bidi_type = GRUB_BIDI_TYPE_ON;
i--;
break;
}
break;
case GRUB_BIDI_TYPE_CS:
if (last_type == GRUB_BIDI_TYPE_EN
&& i + 1 < run_end
&& visual[i + 1].bidi_type == GRUB_BIDI_TYPE_EN)
{
visual[i].bidi_type = GRUB_BIDI_TYPE_EN;
break;
}
if (last_type == GRUB_BIDI_TYPE_AN
&& i + 1 < run_end
&& (visual[i + 1].bidi_type == GRUB_BIDI_TYPE_AN
|| (visual[i + 1].bidi_type == GRUB_BIDI_TYPE_EN
&& last_strong_type == GRUB_BIDI_TYPE_AL)))
{
visual[i].bidi_type = GRUB_BIDI_TYPE_EN;
break;
}
visual[i].bidi_type = GRUB_BIDI_TYPE_ON;
break;
case GRUB_BIDI_TYPE_AL:
last_strong_type = visual[i].bidi_type;
visual[i].bidi_type = GRUB_BIDI_TYPE_R;
break;
default: /* Make GCC happy. */
break;
}
last_type = visual[i].bidi_type;
if (visual[i].bidi_type == GRUB_BIDI_TYPE_EN
&& last_strong_type == GRUB_BIDI_TYPE_L)
visual[i].bidi_type = GRUB_BIDI_TYPE_L;
}
if (prev_level & 1)
last_type = GRUB_BIDI_TYPE_R;
else
last_type = GRUB_BIDI_TYPE_L;
for (i = run_start; i < run_end; )
{
unsigned j;
unsigned next_type;
for (j = i; j < run_end &&
(visual[j].bidi_type == GRUB_BIDI_TYPE_B
|| visual[j].bidi_type == GRUB_BIDI_TYPE_S
|| visual[j].bidi_type == GRUB_BIDI_TYPE_WS
|| visual[j].bidi_type == GRUB_BIDI_TYPE_ON); j++);
if (j == i)
{
if (visual[i].bidi_type == GRUB_BIDI_TYPE_L)
last_type = GRUB_BIDI_TYPE_L;
else
last_type = GRUB_BIDI_TYPE_R;
i++;
continue;
}
if (j == run_end)
next_type = (next_level & 1) ? GRUB_BIDI_TYPE_R : GRUB_BIDI_TYPE_L;
else
{
if (visual[j].bidi_type == GRUB_BIDI_TYPE_L)
next_type = GRUB_BIDI_TYPE_L;
else
next_type = GRUB_BIDI_TYPE_R;
}
if (next_type == last_type)
for (; i < j; i++)
visual[i].bidi_type = last_type;
else
for (; i < j; i++)
visual[i].bidi_type = (cur_run_level & 1) ? GRUB_BIDI_TYPE_R
: GRUB_BIDI_TYPE_L;
}
}
for (i = 0; i < visual_len; i++)
{
if (!(visual[i].bidi_level & 1) && visual[i].bidi_type == GRUB_BIDI_TYPE_R)
{
visual[i].bidi_level++;
continue;
}
if (!(visual[i].bidi_level & 1) && (visual[i].bidi_type == GRUB_BIDI_TYPE_AN
|| visual[i].bidi_type == GRUB_BIDI_TYPE_EN))
{
visual[i].bidi_level += 2;
continue;
}
if ((visual[i].bidi_level & 1) && (visual[i].bidi_type == GRUB_BIDI_TYPE_L
|| visual[i].bidi_type == GRUB_BIDI_TYPE_AN
|| visual[i].bidi_type == GRUB_BIDI_TYPE_EN))
{
visual[i].bidi_level++;
continue;
}
}
}
else
{
for (i = 0; i < visual_len; i++)
visual[i].bidi_level = 0;
}
{
grub_ssize_t ret;
ret = bidi_line_wrap (visual_out, visual, visual_len,
getcharwidth, getcharwidth_arg, maxwidth, startwidth, contchar,
pos, primitive_wrap, log_end);
grub_free (visual);
return ret;
}
}
static int
is_visible (const struct grub_unicode_glyph *gl)
{
if (gl->ncomb)
return 1;
if (gl->base == GRUB_UNICODE_LRM || gl->base == GRUB_UNICODE_RLM)
return 0;
return 1;
}
grub_ssize_t
grub_bidi_logical_to_visual (const grub_uint32_t *logical,
grub_size_t logical_len,
struct grub_unicode_glyph **visual_out,
grub_size_t (*getcharwidth) (const struct grub_unicode_glyph *visual, void *getcharwidth_arg),
void *getcharwidth_arg,
grub_size_t max_length, grub_size_t startwidth,
grub_uint32_t contchar, struct grub_term_pos *pos, int primitive_wrap)
{
const grub_uint32_t *line_start = logical, *ptr;
struct grub_unicode_glyph *visual_ptr;
*visual_out = visual_ptr = grub_malloc (3 * sizeof (visual_ptr[0])
* (logical_len + 2));
if (!visual_ptr)
return -1;
for (ptr = logical; ptr <= logical + logical_len; ptr++)
{
if (ptr == logical + logical_len || *ptr == '\n')
{
grub_ssize_t ret;
grub_ssize_t i, j;
ret = grub_bidi_line_logical_to_visual (line_start,
ptr - line_start,
visual_ptr,
getcharwidth,
getcharwidth_arg,
max_length,
startwidth,
contchar,
pos,
primitive_wrap,
logical_len);
startwidth = 0;
if (ret < 0)
{
grub_free (*visual_out);
return ret;
}
for (i = 0, j = 0; i < ret; i++)
if (is_visible(&visual_ptr[i]))
visual_ptr[j++] = visual_ptr[i];
visual_ptr += j;
line_start = ptr;
if (ptr != logical + logical_len)
{
grub_memset (visual_ptr, 0, sizeof (visual_ptr[0]));
visual_ptr->base = '\n';
visual_ptr++;
line_start++;
}
}
}
return visual_ptr - *visual_out;
}
grub_uint32_t
grub_unicode_mirror_code (grub_uint32_t in)
{
int i;
for (i = 0; grub_unicode_bidi_pairs[i].key; i++)
if (grub_unicode_bidi_pairs[i].key == in)
return grub_unicode_bidi_pairs[i].replace;
return in;
}
grub_uint32_t
grub_unicode_shape_code (grub_uint32_t in, grub_uint8_t attr)
{
int i;
if (!(in >= GRUB_UNICODE_ARABIC_START
&& in < GRUB_UNICODE_ARABIC_END))
return in;
for (i = 0; grub_unicode_arabic_shapes[i].code; i++)
if (grub_unicode_arabic_shapes[i].code == in)
{
grub_uint32_t out = 0;
switch (attr & (GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED
| GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED))
{
case 0:
out = grub_unicode_arabic_shapes[i].isolated;
break;
case GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED:
out = grub_unicode_arabic_shapes[i].right_linked;
break;
case GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED:
out = grub_unicode_arabic_shapes[i].left_linked;
break;
case GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED
|GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED:
out = grub_unicode_arabic_shapes[i].both_linked;
break;
}
if (out)
return out;
}
return in;
}
const grub_uint32_t *
grub_unicode_get_comb_start (const grub_uint32_t *str,
const grub_uint32_t *cur)
{
const grub_uint32_t *ptr;
for (ptr = cur; ptr >= str; ptr--)
{
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_1
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_16)
continue;
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_17
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_256)
continue;
enum grub_comb_type comb_type;
comb_type = grub_unicode_get_comb_type (*ptr);
if (comb_type)
continue;
return ptr;
}
return str;
}
const grub_uint32_t *
grub_unicode_get_comb_end (const grub_uint32_t *end,
const grub_uint32_t *cur)
{
const grub_uint32_t *ptr;
for (ptr = cur; ptr < end; ptr++)
{
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_1
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_16)
continue;
if (*ptr >= GRUB_UNICODE_VARIATION_SELECTOR_17
&& *ptr <= GRUB_UNICODE_VARIATION_SELECTOR_256)
continue;
enum grub_comb_type comb_type;
comb_type = grub_unicode_get_comb_type (*ptr);
if (comb_type)
continue;
return ptr;
}
return end;
}
int
grub_utf8_get_num_code (const char *src, grub_size_t srcsize)
{
int count = 0;
grub_uint32_t code = 0;
int num = 0;
while (srcsize)
{
if (srcsize != (grub_size_t) -1)
srcsize--;
if (!grub_utf8_process ((grub_uint8_t)*src++, &code, &count))
return 0;
if (count != 0)
continue;
if (code == 0 || code > GRUB_UNICODE_LAST_VALID)
return num;
++num;
}
return num;
}
const char *
grub_utf8_offset_code (const char *src, grub_size_t srcsize, int num)
{
int count = 0;
grub_uint32_t code = 0;
while (srcsize && num)
{
if (srcsize != (grub_size_t) -1)
srcsize--;
if (!grub_utf8_process ((grub_uint8_t)*src++, &code, &count))
return 0;
if (count != 0)
continue;
if (code == 0 || code > GRUB_UNICODE_LAST_VALID)
return 0;
--num;
}
if (!num)
return src;
return 0;
}
GRUB2/MOD_SRC/grub-2.04/grub-core/normal/menu.c
View file @ 15b8b1f3
...@@ -461,6 +461,15 @@ menu_set_chosen_entry (grub_menu_t menu, int entry) ...@@ -461,6 +461,15 @@ menu_set_chosen_entry (grub_menu_t menu, int entry)
cur->set_chosen_entry (entry, cur->data); cur->set_chosen_entry (entry, cur->data);
} }
static void
menu_scroll_chosen_entry (int diren)
{
struct grub_menu_viewer *cur;
for (cur = viewers; cur; cur = cur->next)
if (cur->scroll_chosen_entry)
cur->scroll_chosen_entry (cur->data, diren);
}
static void static void
menu_print_timeout (int timeout) menu_print_timeout (int timeout)
{ {
...@@ -846,6 +855,13 @@ run_menu (grub_menu_t menu, int nested, int *auto_boot) ...@@ -846,6 +855,13 @@ run_menu (grub_menu_t menu, int nested, int *auto_boot)
menu_set_chosen_entry (menu, current_entry); menu_set_chosen_entry (menu, current_entry);
break; break;
case GRUB_TERM_KEY_RIGHT:
menu_scroll_chosen_entry (1);
break;
case GRUB_TERM_KEY_LEFT:
menu_scroll_chosen_entry (-1);
break;
case '\n': case '\n':
case '\r': case '\r':
// case GRUB_TERM_KEY_RIGHT: // case GRUB_TERM_KEY_RIGHT:
......
GRUB2/MOD_SRC/grub-2.04/grub-core/normal/menu_text.c
View file @ 15b8b1f3
...@@ -42,6 +42,7 @@ struct menu_viewer_data ...@@ -42,6 +42,7 @@ struct menu_viewer_data
TIMEOUT_TERSE_NO_MARGIN TIMEOUT_TERSE_NO_MARGIN
} timeout_msg; } timeout_msg;
grub_menu_t menu; grub_menu_t menu;
int *menu_title_offset;
struct grub_term_output *term; struct grub_term_output *term;
}; };
...@@ -524,6 +525,37 @@ menu_text_set_chosen_entry (int entry, void *dataptr) ...@@ -524,6 +525,37 @@ menu_text_set_chosen_entry (int entry, void *dataptr)
grub_term_refresh (data->term); grub_term_refresh (data->term);
} }
static void
menu_text_scroll_chosen_entry (void *dataptr, int diren)
{
struct menu_viewer_data *data = dataptr;
const char *orig_title, *scrolled_title;
int off;
int selected;
grub_menu_entry_t entry;
if (!data->menu->size)
return;
selected = data->first + data->offset;
entry = grub_menu_get_entry (data->menu, selected);
orig_title = entry->title;
off = data->menu_title_offset[selected] + diren;
if (off < 0
|| off > grub_utf8_get_num_code (orig_title, grub_strlen(orig_title)))
return;
scrolled_title =
grub_utf8_offset_code (orig_title, grub_strlen (orig_title), off);
if (scrolled_title)
entry->title = scrolled_title;
print_entry (data->geo.first_entry_y + data->offset, 1, entry, data);
entry->title = orig_title;
data->menu_title_offset[selected] = off;
grub_term_refresh (data->term);
}
static void static void
menu_text_fini (void *dataptr) menu_text_fini (void *dataptr)
{ {
...@@ -531,6 +563,8 @@ menu_text_fini (void *dataptr) ...@@ -531,6 +563,8 @@ menu_text_fini (void *dataptr)
grub_term_setcursor (data->term, 1); grub_term_setcursor (data->term, 1);
grub_term_cls (data->term); grub_term_cls (data->term);
if (data->menu_title_offset)
grub_free (data->menu_title_offset);
grub_free (data); grub_free (data);
} }
...@@ -585,9 +619,14 @@ grub_menu_try_text (struct grub_term_output *term, ...@@ -585,9 +619,14 @@ grub_menu_try_text (struct grub_term_output *term,
return grub_errno; return grub_errno;
} }
if (menu->size)
data->menu_title_offset = grub_zalloc (sizeof (*data->menu_title_offset) * menu->size);
data->term = term; data->term = term;
instance->data = data; instance->data = data;
instance->set_chosen_entry = menu_text_set_chosen_entry; instance->set_chosen_entry = menu_text_set_chosen_entry;
if (data->menu_title_offset)
instance->scroll_chosen_entry = menu_text_scroll_chosen_entry;
instance->print_timeout = menu_text_print_timeout; instance->print_timeout = menu_text_print_timeout;
instance->clear_timeout = menu_text_clear_timeout; instance->clear_timeout = menu_text_clear_timeout;
instance->fini = menu_text_fini; instance->fini = menu_text_fini;
......
GRUB2/MOD_SRC/grub-2.04/include/grub/charset.h 0 → 100644
View file @ 15b8b1f3
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_CHARSET_HEADER
#define GRUB_CHARSET_HEADER 1
#include <grub/types.h>
#define GRUB_UINT8_1_LEADINGBIT 0x80
#define GRUB_UINT8_2_LEADINGBITS 0xc0
#define GRUB_UINT8_3_LEADINGBITS 0xe0
#define GRUB_UINT8_4_LEADINGBITS 0xf0
#define GRUB_UINT8_5_LEADINGBITS 0xf8
#define GRUB_UINT8_6_LEADINGBITS 0xfc
#define GRUB_UINT8_7_LEADINGBITS 0xfe
#define GRUB_UINT8_1_TRAILINGBIT 0x01
#define GRUB_UINT8_2_TRAILINGBITS 0x03
#define GRUB_UINT8_3_TRAILINGBITS 0x07
#define GRUB_UINT8_4_TRAILINGBITS 0x0f
#define GRUB_UINT8_5_TRAILINGBITS 0x1f
#define GRUB_UINT8_6_TRAILINGBITS 0x3f
#define GRUB_MAX_UTF8_PER_UTF16 4
/* You need at least one UTF-8 byte to have one UTF-16 word.
You need at least three UTF-8 bytes to have 2 UTF-16 words (surrogate pairs).
*/
#define GRUB_MAX_UTF16_PER_UTF8 1
#define GRUB_MAX_UTF8_PER_CODEPOINT 4
#define GRUB_UCS2_LIMIT 0x10000
#define GRUB_UTF16_UPPER_SURROGATE(code) \
(0xD800 | ((((code) - GRUB_UCS2_LIMIT) >> 10) & 0x3ff))
#define GRUB_UTF16_LOWER_SURROGATE(code) \
(0xDC00 | (((code) - GRUB_UCS2_LIMIT) & 0x3ff))
/* Process one character from UTF8 sequence.
At beginning set *code = 0, *count = 0. Returns 0 on failure and
1 on success. *count holds the number of trailing bytes. */
static inline int
grub_utf8_process (grub_uint8_t c, grub_uint32_t *code, int *count)
{
if (*count)
{
if ((c & GRUB_UINT8_2_LEADINGBITS) != GRUB_UINT8_1_LEADINGBIT)
{
*count = 0;
/* invalid */
return 0;
}
else
{
*code <<= 6;
*code |= (c & GRUB_UINT8_6_TRAILINGBITS);
(*count)--;
/* Overlong. */
if ((*count == 1 && *code <= 0x1f)
|| (*count == 2 && *code <= 0xf))
{
*code = 0;
*count = 0;
return 0;
}
return 1;
}
}
if ((c & GRUB_UINT8_1_LEADINGBIT) == 0)
{
*code = c;
return 1;
}
if ((c & GRUB_UINT8_3_LEADINGBITS) == GRUB_UINT8_2_LEADINGBITS)
{
*count = 1;
*code = c & GRUB_UINT8_5_TRAILINGBITS;
/* Overlong */
if (*code <= 1)
{
*count = 0;
*code = 0;
return 0;
}
return 1;
}
if ((c & GRUB_UINT8_4_LEADINGBITS) == GRUB_UINT8_3_LEADINGBITS)
{
*count = 2;
*code = c & GRUB_UINT8_4_TRAILINGBITS;
return 1;
}
if ((c & GRUB_UINT8_5_LEADINGBITS) == GRUB_UINT8_4_LEADINGBITS)
{
*count = 3;
*code = c & GRUB_UINT8_3_TRAILINGBITS;
return 1;
}
return 0;
}
/* Convert a (possibly null-terminated) UTF-8 string of at most SRCSIZE
bytes (if SRCSIZE is -1, it is ignored) in length to a UTF-16 string.
Return the number of characters converted. DEST must be able to hold
at least DESTSIZE characters. If an invalid sequence is found, return -1.
If SRCEND is not NULL, then *SRCEND is set to the next byte after the
last byte used in SRC. */
static inline grub_size_t
grub_utf8_to_utf16 (grub_uint16_t *dest, grub_size_t destsize,
const grub_uint8_t *src, grub_size_t srcsize,
const grub_uint8_t **srcend)
{
grub_uint16_t *p = dest;
int count = 0;
grub_uint32_t code = 0;
if (srcend)
*srcend = src;
while (srcsize && destsize)
{
int was_count = count;
if (srcsize != (grub_size_t)-1)
srcsize--;
if (!grub_utf8_process (*src++, &code, &count))
{
code = '?';
count = 0;
/* Character c may be valid, don't eat it. */
if (was_count)
src--;
}
if (count != 0)
continue;
if (code == 0)
break;
if (destsize < 2 && code >= GRUB_UCS2_LIMIT)
break;
if (code >= GRUB_UCS2_LIMIT)
{
*p++ = GRUB_UTF16_UPPER_SURROGATE (code);
*p++ = GRUB_UTF16_LOWER_SURROGATE (code);
destsize -= 2;
}
else
{
*p++ = code;
destsize--;
}
}
if (srcend)
*srcend = src;
return p - dest;
}
/* Determine the last position where the UTF-8 string [beg, end) can
be safely cut. */
static inline grub_size_t
grub_getend (const char *beg, const char *end)
{
const char *ptr;
for (ptr = end - 1; ptr >= beg; ptr--)
if ((*ptr & GRUB_UINT8_2_LEADINGBITS) != GRUB_UINT8_1_LEADINGBIT)
break;
if (ptr < beg)
return 0;
if ((*ptr & GRUB_UINT8_1_LEADINGBIT) == 0)
return ptr + 1 - beg;
if ((*ptr & GRUB_UINT8_3_LEADINGBITS) == GRUB_UINT8_2_LEADINGBITS
&& ptr + 2 <= end)
return ptr + 2 - beg;
if ((*ptr & GRUB_UINT8_4_LEADINGBITS) == GRUB_UINT8_3_LEADINGBITS
&& ptr + 3 <= end)
return ptr + 3 - beg;
if ((*ptr & GRUB_UINT8_5_LEADINGBITS) == GRUB_UINT8_4_LEADINGBITS
&& ptr + 4 <= end)
return ptr + 4 - beg;
/* Invalid character or incomplete. Cut before it. */
return ptr - beg;
}
/* Convert UTF-16 to UTF-8. */
static inline grub_uint8_t *
grub_utf16_to_utf8 (grub_uint8_t *dest, const grub_uint16_t *src,
grub_size_t size)
{
grub_uint32_t code_high = 0;
while (size--)
{
grub_uint32_t code = *src++;
if (code_high)
{
if (code >= 0xDC00 && code <= 0xDFFF)
{
/* Surrogate pair. */
code = ((code_high - 0xD800) << 10) + (code - 0xDC00) + 0x10000;
*dest++ = (code >> 18) | 0xF0;
*dest++ = ((code >> 12) & 0x3F) | 0x80;
*dest++ = ((code >> 6) & 0x3F) | 0x80;
*dest++ = (code & 0x3F) | 0x80;
}
else
{
/* Error... */
*dest++ = '?';
/* *src may be valid. Don't eat it. */
src--;
}
code_high = 0;
}
else
{
if (code <= 0x007F)
*dest++ = code;
else if (code <= 0x07FF)
{
*dest++ = (code >> 6) | 0xC0;
*dest++ = (code & 0x3F) | 0x80;
}
else if (code >= 0xD800 && code <= 0xDBFF)
{
code_high = code;
continue;
}
else if (code >= 0xDC00 && code <= 0xDFFF)
{
/* Error... */
*dest++ = '?';
}
else if (code < 0x10000)
{
*dest++ = (code >> 12) | 0xE0;
*dest++ = ((code >> 6) & 0x3F) | 0x80;
*dest++ = (code & 0x3F) | 0x80;
}
else
{
*dest++ = (code >> 18) | 0xF0;
*dest++ = ((code >> 12) & 0x3F) | 0x80;
*dest++ = ((code >> 6) & 0x3F) | 0x80;
*dest++ = (code & 0x3F) | 0x80;
}
}
}
return dest;
}
#define GRUB_MAX_UTF8_PER_LATIN1 2
/* Convert Latin1 to UTF-8. */
static inline grub_uint8_t *
grub_latin1_to_utf8 (grub_uint8_t *dest, const grub_uint8_t *src,
grub_size_t size)
{
while (size--)
{
if (!(*src & 0x80))
*dest++ = *src;
else
{
*dest++ = (*src >> 6) | 0xC0;
*dest++ = (*src & 0x3F) | 0x80;
}
src++;
}
return dest;
}
/* Convert UCS-4 to UTF-8. */
char *grub_ucs4_to_utf8_alloc (const grub_uint32_t *src, grub_size_t size);
int
grub_is_valid_utf8 (const grub_uint8_t *src, grub_size_t srcsize);
grub_ssize_t grub_utf8_to_ucs4_alloc (const char *msg,
grub_uint32_t **unicode_msg,
grub_uint32_t **last_position);
/* Returns the number of bytes the string src would occupy is converted
to UTF-8, excluding \0. */
grub_size_t
grub_get_num_of_utf8_bytes (const grub_uint32_t *src, grub_size_t size);
/* Converts UCS-4 to UTF-8. Returns the number of bytes effectively written
excluding the trailing \0. */
grub_size_t
grub_ucs4_to_utf8 (const grub_uint32_t *src, grub_size_t size,
grub_uint8_t *dest, grub_size_t destsize);
grub_size_t grub_utf8_to_ucs4 (grub_uint32_t *dest, grub_size_t destsize,
const grub_uint8_t *src, grub_size_t srcsize,
const grub_uint8_t **srcend);
/* Returns -2 if not enough space, -1 on invalid character. */
grub_ssize_t
grub_encode_utf8_character (grub_uint8_t *dest, grub_uint8_t *destend,
grub_uint32_t code);
const grub_uint32_t *
grub_unicode_get_comb_start (const grub_uint32_t *str,
const grub_uint32_t *cur);
int
grub_utf8_get_num_code (const char *src, grub_size_t srcsize);
const char *
grub_utf8_offset_code (const char *src, grub_size_t srcsize, int num);
#endif
GRUB2/MOD_SRC/grub-2.04/include/grub/gfxmenu_view.h 0 → 100644
View file @ 15b8b1f3
/* gfxmenu_view.h - gfxmenu view interface. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_GFXMENU_VIEW_HEADER
#define GRUB_GFXMENU_VIEW_HEADER 1
#include <grub/types.h>
#include <grub/err.h>
#include <grub/menu.h>
#include <grub/font.h>
#include <grub/gfxwidgets.h>
struct grub_gfxmenu_view; /* Forward declaration of opaque type. */
typedef struct grub_gfxmenu_view *grub_gfxmenu_view_t;
grub_gfxmenu_view_t grub_gfxmenu_view_new (const char *theme_path,
int width, int height);
void grub_gfxmenu_view_destroy (grub_gfxmenu_view_t view);
/* Set properties on the view based on settings from the specified
theme file. */
grub_err_t grub_gfxmenu_view_load_theme (grub_gfxmenu_view_t view,
const char *theme_path);
grub_err_t grub_gui_recreate_box (grub_gfxmenu_box_t *boxptr,
const char *pattern, const char *theme_dir);
void grub_gfxmenu_view_draw (grub_gfxmenu_view_t view);
void
grub_gfxmenu_redraw_menu (grub_gfxmenu_view_t view);
void
grub_gfxmenu_redraw_timeout (grub_gfxmenu_view_t view);
void
grub_gfxmenu_view_redraw (grub_gfxmenu_view_t view,
const grub_video_rect_t *region);
void
grub_gfxmenu_clear_timeout (void *data);
void
grub_gfxmenu_print_timeout (int timeout, void *data);
void
grub_gfxmenu_set_chosen_entry (int entry, void *data);
void
grub_gfxmenu_scroll_chosen_entry (void *data, int diren);
grub_err_t grub_font_draw_string (const char *str,
grub_font_t font,
grub_video_color_t color,
int left_x, int baseline_y);
int grub_font_get_string_width (grub_font_t font,
const char *str);
/* Implementation details -- this should not be used outside of the
view itself. */
#include <grub/video.h>
#include <grub/bitmap.h>
#include <grub/bitmap_scale.h>
#include <grub/gui.h>
#include <grub/gfxwidgets.h>
#include <grub/icon_manager.h>
/* Definition of the private representation of the view. */
struct grub_gfxmenu_view
{
grub_video_rect_t screen;
int need_to_check_sanity;
grub_video_rect_t terminal_rect;
int terminal_border;
grub_font_t title_font;
grub_font_t message_font;
char *terminal_font_name;
grub_video_rgba_color_t title_color;
grub_video_rgba_color_t message_color;
grub_video_rgba_color_t message_bg_color;
struct grub_video_bitmap *raw_desktop_image;
struct grub_video_bitmap *scaled_desktop_image;
grub_video_bitmap_selection_method_t desktop_image_scale_method;
grub_video_bitmap_h_align_t desktop_image_h_align;
grub_video_bitmap_v_align_t desktop_image_v_align;
grub_video_rgba_color_t desktop_color;
grub_gfxmenu_box_t terminal_box;
char *title_text;
char *progress_message_text;
char *theme_path;
grub_gui_container_t canvas;
int double_repaint;
int selected;
grub_video_rect_t progress_message_frame;
grub_menu_t menu;
int nested;
int first_timeout;
int *menu_title_offset;
};
#endif /* ! GRUB_GFXMENU_VIEW_HEADER */
GRUB2/MOD_SRC/grub-2.04/include/grub/menu_viewer.h 0 → 100644
View file @ 15b8b1f3
/* menu_viewer.h - Interface to menu viewer implementations. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_MENU_VIEWER_HEADER
#define GRUB_MENU_VIEWER_HEADER 1
#include <grub/err.h>
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/menu.h>
#include <grub/term.h>
struct grub_menu_viewer
{
struct grub_menu_viewer *next;
void *data;
void (*set_chosen_entry) (int entry, void *data);
void (*scroll_chosen_entry) (void *data, int diren);
void (*print_timeout) (int timeout, void *data);
void (*clear_timeout) (void *data);
void (*fini) (void *fini);
};
void grub_menu_register_viewer (struct grub_menu_viewer *viewer);
grub_err_t
grub_menu_try_text (struct grub_term_output *term,
int entry, grub_menu_t menu, int nested);
extern grub_err_t (*grub_gfxmenu_try_hook) (int entry, grub_menu_t menu,
int nested);
#endif /* GRUB_MENU_VIEWER_HEADER */
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