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grub/grub-core/gfxmenu/gui_list.c
Vladimir Serbinenko 6866f2ba37 Remove potential division by 0 in gfxmenu.
2015-01-21 17:42:15 +01:00

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/* 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>
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;
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;
}
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