2N/A/* gui_label.c - GUI component to display a line of text. */
2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2008,2009 Free Software Foundation, Inc.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#include <grub/mm.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/gui.h>
2N/A#include <grub/font.h>
2N/A#include <grub/gui_string_util.h>
2N/A
2N/Astatic const char *align_options[] =
2N/A{
2N/A "left",
2N/A "center",
2N/A "right",
2N/A 0
2N/A};
2N/A
2N/Aenum align_mode {
2N/A align_left,
2N/A align_center,
2N/A align_right
2N/A};
2N/A
2N/Astruct grub_gui_label
2N/A{
2N/A struct grub_gui_component comp;
2N/A
2N/A grub_gui_container_t parent;
2N/A grub_video_rect_t bounds;
2N/A char *id;
2N/A int visible;
2N/A char *text;
2N/A char *template;
2N/A grub_font_t font;
2N/A grub_video_rgba_color_t color;
2N/A int value;
2N/A enum align_mode align;
2N/A};
2N/A
2N/Atypedef struct grub_gui_label *grub_gui_label_t;
2N/A
2N/Astatic void
2N/Alabel_destroy (void *vself)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A grub_gfxmenu_timeout_unregister ((grub_gui_component_t) self);
2N/A grub_free (self->text);
2N/A grub_free (self->template);
2N/A grub_free (self);
2N/A}
2N/A
2N/Astatic const char *
2N/Alabel_get_id (void *vself)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A return self->id;
2N/A}
2N/A
2N/Astatic int
2N/Alabel_is_instance (void *vself __attribute__((unused)), const char *type)
2N/A{
2N/A return grub_strcmp (type, "component") == 0;
2N/A}
2N/A
2N/Astatic void
2N/Alabel_paint (void *vself, const grub_video_rect_t *region)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A
2N/A if (! self->visible)
2N/A return;
2N/A
2N/A if (!grub_video_have_common_points (region, &self->bounds))
2N/A return;
2N/A
2N/A /* Calculate the starting x coordinate. */
2N/A int left_x;
2N/A if (self->align == align_left)
2N/A left_x = 0;
2N/A else if (self->align == align_center)
2N/A left_x = (self->bounds.width
2N/A - grub_font_get_string_width (self->font, self->text)) / 2;
2N/A else if (self->align == align_right)
2N/A left_x = (self->bounds.width
2N/A - grub_font_get_string_width (self->font, self->text));
2N/A else
2N/A return; /* Invalid alignment. */
2N/A
2N/A if (left_x < 0 || left_x > (int) self->bounds.width)
2N/A left_x = 0;
2N/A
2N/A grub_video_rect_t vpsave;
2N/A grub_gui_set_viewport (&self->bounds, &vpsave);
2N/A grub_font_draw_string (self->text,
2N/A self->font,
2N/A grub_video_map_rgba_color (self->color),
2N/A left_x,
2N/A grub_font_get_ascent (self->font));
2N/A grub_gui_restore_viewport (&vpsave);
2N/A}
2N/A
2N/Astatic void
2N/Alabel_set_parent (void *vself, grub_gui_container_t parent)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A self->parent = parent;
2N/A}
2N/A
2N/Astatic grub_gui_container_t
2N/Alabel_get_parent (void *vself)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A return self->parent;
2N/A}
2N/A
2N/Astatic void
2N/Alabel_set_bounds (void *vself, const grub_video_rect_t *bounds)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A self->bounds = *bounds;
2N/A}
2N/A
2N/Astatic void
2N/Alabel_get_bounds (void *vself, grub_video_rect_t *bounds)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A *bounds = self->bounds;
2N/A}
2N/A
2N/Astatic void
2N/Alabel_get_minimal_size (void *vself, unsigned *width, unsigned *height)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A *width = grub_font_get_string_width (self->font, self->text);
2N/A *height = (grub_font_get_ascent (self->font)
2N/A + grub_font_get_descent (self->font));
2N/A}
2N/A
2N/Astatic void
2N/Alabel_set_state (void *vself, int visible, int start __attribute__ ((unused)),
2N/A int current, int end __attribute__ ((unused)))
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A self->value = -current;
2N/A self->visible = visible;
2N/A grub_free (self->text);
2N/A self->text = grub_xasprintf (self->template ? : "%d", self->value);
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Alabel_set_property (void *vself, const char *name, const char *value)
2N/A{
2N/A grub_gui_label_t self = vself;
2N/A if (grub_strcmp (name, "text") == 0)
2N/A {
2N/A grub_free (self->text);
2N/A grub_free (self->template);
2N/A if (! value)
2N/A {
2N/A self->template = NULL;
2N/A self->text = grub_strdup ("");
2N/A }
2N/A else
2N/A {
2N/A self->template = grub_strdup (value);
2N/A self->text = grub_xasprintf (value, self->value);
2N/A }
2N/A }
2N/A else if (grub_strcmp (name, "font") == 0)
2N/A {
2N/A self->font = grub_font_get (value);
2N/A }
2N/A else if (grub_strcmp (name, "color") == 0)
2N/A {
2N/A grub_video_parse_color (value, &self->color);
2N/A }
2N/A else if (grub_strcmp (name, "align") == 0)
2N/A {
2N/A int i;
2N/A for (i = 0; align_options[i]; i++)
2N/A {
2N/A if (grub_strcmp (align_options[i], value) == 0)
2N/A {
2N/A self->align = i; /* Set the alignment mode. */
2N/A break;
2N/A }
2N/A }
2N/A }
2N/A else if (grub_strcmp (name, "visible") == 0)
2N/A {
2N/A self->visible = grub_strcmp (value, "false") != 0;
2N/A }
2N/A else if (grub_strcmp (name, "id") == 0)
2N/A {
2N/A grub_gfxmenu_timeout_unregister ((grub_gui_component_t) self);
2N/A grub_free (self->id);
2N/A if (value)
2N/A self->id = grub_strdup (value);
2N/A else
2N/A self->id = 0;
2N/A if (self->id && grub_strcmp (self->id, GRUB_GFXMENU_TIMEOUT_COMPONENT_ID)
2N/A == 0)
2N/A grub_gfxmenu_timeout_register ((grub_gui_component_t) self,
2N/A label_set_state);
2N/A }
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic struct grub_gui_component_ops label_ops =
2N/A{
2N/A .destroy = label_destroy,
2N/A .get_id = label_get_id,
2N/A .is_instance = label_is_instance,
2N/A .paint = label_paint,
2N/A .set_parent = label_set_parent,
2N/A .get_parent = label_get_parent,
2N/A .set_bounds = label_set_bounds,
2N/A .get_bounds = label_get_bounds,
2N/A .get_minimal_size = label_get_minimal_size,
2N/A .set_property = label_set_property
2N/A};
2N/A
2N/Agrub_gui_component_t
2N/Agrub_gui_label_new (void)
2N/A{
2N/A grub_gui_label_t label;
2N/A label = grub_zalloc (sizeof (*label));
2N/A if (! label)
2N/A return 0;
2N/A label->comp.ops = &label_ops;
2N/A label->visible = 1;
2N/A label->text = grub_strdup ("");
2N/A label->font = grub_font_get ("Unknown Regular 16");
2N/A label->color.red = 0;
2N/A label->color.green = 0;
2N/A label->color.blue = 0;
2N/A label->color.alpha = 255;
2N/A label->align = align_left;
2N/A return (grub_gui_component_t) label;
2N/A}