grub/gfxmenu/gui_progress_bar.c

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2009-11-20 15:02:58 +00:00
/* gui_progress_bar.c - GUI progress bar component. */
/*
* 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/font.h>
#include <grub/gui_string_util.h>
#include <grub/gfxmenu_view.h>
#include <grub/gfxwidgets.h>
struct grub_gui_progress_bar
{
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struct grub_gui_component component;
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grub_gui_container_t parent;
grub_video_rect_t bounds;
char *id;
int visible;
int start;
int end;
int value;
int show_text;
char *text;
grub_font_t font;
grub_gui_color_t text_color;
grub_gui_color_t border_color;
grub_gui_color_t bg_color;
grub_gui_color_t fg_color;
char *theme_dir;
int need_to_recreate_pixmaps;
char *bar_pattern;
char *highlight_pattern;
grub_gfxmenu_box_t bar_box;
grub_gfxmenu_box_t highlight_box;
};
typedef struct grub_gui_progress_bar *grub_gui_progress_bar_t;
static void
progress_bar_destroy (void *vself)
{
grub_gui_progress_bar_t self = vself;
grub_free (self);
}
static const char *
progress_bar_get_id (void *vself)
{
grub_gui_progress_bar_t self = vself;
return self->id;
}
static int
progress_bar_is_instance (void *vself __attribute__((unused)), const char *type)
{
return grub_strcmp (type, "component") == 0;
}
static int
check_pixmaps (grub_gui_progress_bar_t self)
{
if (self->need_to_recreate_pixmaps)
{
grub_gui_recreate_box (&self->bar_box,
self->bar_pattern,
self->theme_dir);
grub_gui_recreate_box (&self->highlight_box,
self->highlight_pattern,
self->theme_dir);
self->need_to_recreate_pixmaps = 0;
}
return (self->bar_box != 0 && self->highlight_box != 0);
}
static void
draw_filled_rect_bar (grub_gui_progress_bar_t self)
{
/* Set the progress bar's frame. */
grub_video_rect_t f;
f.x = 1;
f.y = 1;
f.width = self->bounds.width - 2;
f.height = self->bounds.height - 2;
/* Border. */
grub_video_fill_rect (grub_gui_map_color (self->border_color),
f.x - 1, f.y - 1,
f.width + 2, f.height + 2);
/* Bar background. */
int barwidth = (f.width
* (self->value - self->start)
/ (self->end - self->start));
grub_video_fill_rect (grub_gui_map_color (self->bg_color),
f.x + barwidth, f.y,
f.width - barwidth, f.height);
/* Bar foreground. */
grub_video_fill_rect (grub_gui_map_color (self->fg_color),
f.x, f.y,
barwidth, f.height);
}
static void
draw_pixmap_bar (grub_gui_progress_bar_t self)
{
grub_gfxmenu_box_t bar = self->bar_box;
grub_gfxmenu_box_t hl = self->highlight_box;
int w = self->bounds.width;
int h = self->bounds.height;
int bar_l_pad = bar->get_left_pad (bar);
int bar_r_pad = bar->get_right_pad (bar);
int bar_t_pad = bar->get_top_pad (bar);
int bar_b_pad = bar->get_bottom_pad (bar);
int bar_h_pad = bar_l_pad + bar_r_pad;
int bar_v_pad = bar_t_pad + bar_b_pad;
int tracklen = w - bar_h_pad;
int trackheight = h - bar_v_pad;
bar->set_content_size (bar, tracklen, trackheight);
int barwidth = (tracklen
* (self->value - self->start)
/ (self->end - self->start));
hl->set_content_size (hl, barwidth, h - bar_v_pad);
bar->draw (bar, 0, 0);
hl->draw (hl, bar_l_pad, bar_t_pad);
}
static void
draw_text (grub_gui_progress_bar_t self)
{
const char *text = self->text;
if (text && self->show_text)
{
grub_font_t font = self->font;
grub_video_color_t text_color = grub_gui_map_color (self->text_color);
int width = self->bounds.width;
int height = self->bounds.height;
/* Center the text. */
int text_width = grub_font_get_string_width (font, text);
int x = (width - text_width) / 2;
int y = ((height - grub_font_get_descent (font)) / 2
+ grub_font_get_ascent (font) / 2);
grub_font_draw_string (text, font, text_color, x, y);
}
}
static void
progress_bar_paint (void *vself, const grub_video_rect_t *region)
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{
grub_gui_progress_bar_t self = vself;
if (! self->visible)
return;
if (!grub_video_have_common_points (region, &self->bounds))
return;
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grub_video_rect_t vpsave;
grub_gui_set_viewport (&self->bounds, &vpsave);
if (check_pixmaps (self))
draw_pixmap_bar (self);
else
draw_filled_rect_bar (self);
draw_text (self);
grub_gui_restore_viewport (&vpsave);
}
static void
progress_bar_set_parent (void *vself, grub_gui_container_t parent)
{
grub_gui_progress_bar_t self = vself;
self->parent = parent;
}
static grub_gui_container_t
progress_bar_get_parent (void *vself)
{
grub_gui_progress_bar_t self = vself;
return self->parent;
}
static void
progress_bar_set_bounds (void *vself, const grub_video_rect_t *bounds)
{
grub_gui_progress_bar_t self = vself;
self->bounds = *bounds;
}
static void
progress_bar_get_bounds (void *vself, grub_video_rect_t *bounds)
{
grub_gui_progress_bar_t self = vself;
*bounds = self->bounds;
}
static void
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progress_bar_get_minimal_size (void *vself __attribute__ ((unused)),
unsigned *width, unsigned *height)
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{
*width = 200;
*height = 28;
}
static grub_err_t
progress_bar_set_property (void *vself, const char *name, const char *value)
{
grub_gui_progress_bar_t self = vself;
if (grub_strcmp (name, "value") == 0)
{
self->value = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "start") == 0)
{
self->start = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "end") == 0)
{
self->end = grub_strtol (value, 0, 10);
}
else if (grub_strcmp (name, "text") == 0)
{
grub_free (self->text);
if (! value)
value = "";
self->text = grub_strdup (value);
}
else if (grub_strcmp (name, "font") == 0)
{
self->font = grub_font_get (value);
}
else if (grub_strcmp (name, "text_color") == 0)
{
grub_gui_parse_color (value, &self->text_color);
}
else if (grub_strcmp (name, "border_color") == 0)
{
grub_gui_parse_color (value, &self->border_color);
}
else if (grub_strcmp (name, "bg_color") == 0)
{
grub_gui_parse_color (value, &self->bg_color);
}
else if (grub_strcmp (name, "fg_color") == 0)
{
grub_gui_parse_color (value, &self->fg_color);
}
else if (grub_strcmp (name, "bar_style") == 0)
{
self->need_to_recreate_pixmaps = 1;
grub_free (self->bar_pattern);
self->bar_pattern = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "highlight_style") == 0)
{
self->need_to_recreate_pixmaps = 1;
grub_free (self->highlight_pattern);
self->highlight_pattern = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "theme_dir") == 0)
{
self->need_to_recreate_pixmaps = 1;
grub_free (self->theme_dir);
self->theme_dir = value ? grub_strdup (value) : 0;
}
else if (grub_strcmp (name, "visible") == 0)
{
self->visible = grub_strcmp (value, "false") != 0;
}
else if (grub_strcmp (name, "show_text") == 0)
{
self->show_text = grub_strcmp (value, "false") != 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;
}
static struct grub_gui_component_ops progress_bar_ops =
{
.destroy = progress_bar_destroy,
.get_id = progress_bar_get_id,
.is_instance = progress_bar_is_instance,
.paint = progress_bar_paint,
.set_parent = progress_bar_set_parent,
.get_parent = progress_bar_get_parent,
.set_bounds = progress_bar_set_bounds,
.get_bounds = progress_bar_get_bounds,
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.get_minimal_size = progress_bar_get_minimal_size,
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.set_property = progress_bar_set_property
};
grub_gui_component_t
grub_gui_progress_bar_new (void)
{
grub_gui_progress_bar_t self;
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self = grub_zalloc (sizeof (*self));
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if (! self)
return 0;
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self->component.ops = &progress_bar_ops;
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self->visible = 1;
self->show_text = 1;
self->text = grub_strdup ("");
self->font = grub_font_get ("Helvetica 10");
grub_gui_color_t black = { .red = 0, .green = 0, .blue = 0, .alpha = 255 };
grub_gui_color_t gray = { .red = 128, .green = 128, .blue = 128, .alpha = 255 };
grub_gui_color_t lightgray = { .red = 200, .green = 200, .blue = 200, .alpha = 255 };
self->text_color = black;
self->border_color = black;
self->bg_color = gray;
self->fg_color = lightgray;
return (grub_gui_component_t) self;
}