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awesome/widgets/progressbar.c

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/*
* progressbar.c - progressbar widget
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
* Copyright © 2007-2008 Marco Candrian <mac@calmar.ws>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "widget.h"
#include "screen.h"
extern awesome_t globalconf;
typedef struct
{
/** Pointer to values array */
float *values;
/** These or lower values won't fill the bar at all*/
float *min_value;
/** These or higher values fill the bar fully */
float *max_value;
/** Title of the data/bar */
char **data_title;
/** Width of the data_items */
int width;
/** Pixel between data items (bars) */
int gap;
/** Border width in pixels */
int border_width;
/** Padding between border and ticks/bar */
int border_padding;
/** Gap/distance between the individual ticks */
int ticks_gap;
/** Total number of ticks */
int ticks_count;
/** Reverse filling */
bool *reverse;
/** 90 Degree's turned */
bool vertical;
/** Number of data_items (bars) */
int data_items;
/** Height 0-1, where 1.0 is height of bar */
float height;
/** Foreground color */
xcolor_t *fg;
/** Foreground color of turned-off ticks */
xcolor_t *fg_off;
/** Foreground color when bar is half-full */
xcolor_t **pfg_center;
/** Foreground color when bar is full */
xcolor_t **pfg_end;
/** Background color */
xcolor_t *bg;
/** Border color */
xcolor_t *bordercolor;
} Data;
static void
progressbar_pcolor_set(xcolor_t **ppcolor, char *new_color)
{
bool flag = false;
if(!*ppcolor)
{
flag = true; /* p_delete && restore to NULL, if xcolor_new unsuccessful */
*ppcolor = p_new(xcolor_t, 1);
}
if(!(xcolor_new(globalconf.connection,
globalconf.default_screen,
new_color, *ppcolor))
&& flag)
p_delete(ppcolor);
}
static void
progressbar_data_add(Data *d, const char *new_data_title)
{
d->data_items++;
/* memory (re-)allocating */
p_realloc(&(d->data_title), d->data_items);
p_realloc(&(d->values), d->data_items);
p_realloc(&(d->min_value), d->data_items);
p_realloc(&(d->max_value), d->data_items);
p_realloc(&(d->reverse), d->data_items);
p_realloc(&(d->fg), d->data_items);
p_realloc(&(d->fg_off), d->data_items);
p_realloc(&(d->bg), d->data_items);
p_realloc(&(d->bordercolor), d->data_items);
p_realloc(&(d->pfg_center), d->data_items);
p_realloc(&(d->pfg_end), d->data_items);
/* initialize values for new data section */
d->reverse[d->data_items - 1] = false;
d->data_title[d->data_items - 1] = a_strdup(new_data_title);
d->values[d->data_items - 1] = 0.0;
d->min_value[d->data_items - 1] = 0.0;
d->max_value[d->data_items - 1] = 100.0;
d->fg[d->data_items - 1] = globalconf.colors.fg;
d->fg_off[d->data_items - 1] = globalconf.colors.bg;
d->bg[d->data_items - 1] = globalconf.colors.bg;
d->bordercolor[d->data_items - 1] = globalconf.colors.fg;
d->pfg_center[d->data_items - 1] = NULL;
d->pfg_end[d->data_items - 1] = NULL;
}
static int
progressbar_draw(draw_context_t *ctx,
int screen __attribute__ ((unused)),
widget_node_t *w,
int offset,
int used __attribute__ ((unused)),
void *p __attribute__ ((unused)))
{
/* pb_.. values points to the widget inside a potential border */
int i, values_ticks, pb_x, pb_y, pb_height, pb_width, pb_progress, pb_offset;
int unit = 0; /* tick + gap */
area_t rectangle, pattern_rect;
Data *d = w->widget->data;
if(!d->data_items)
return 0;
if(d->vertical)
{
pb_width = (int) ((d->width - 2 * (d->border_width + d->border_padding) * d->data_items
- d->gap * (d->data_items - 1)) / d->data_items);
w->area.width = d->data_items
* (pb_width + 2 * (d->border_width + d->border_padding)
+ d->gap) - d->gap;
}
else
{
pb_width = d->width - 2 * (d->border_width + d->border_padding);
if(d->ticks_count && d->ticks_gap)
{
unit = (pb_width + d->ticks_gap) / d->ticks_count;
pb_width = unit * d->ticks_count - d->ticks_gap; /* rounded to match ticks... */
}
w->area.width = pb_width + 2 * (d->border_width + d->border_padding);
}
w->area.x = widget_calculate_offset(ctx->width,
w->area.width,
offset,
w->widget->align);
w->area.y = 0;
/* for a 'reversed' progressbar:
* basic progressbar:
* 1. the full space gets the size of the formerly empty one
* 2. the pattern must be mirrored
* 3. the formerly 'empty' side gets drawed with fg colors, the 'full' with bg-color
*
* ticks:
* 1. round the values to a full tick accordingly
* 2. finally draw the gaps
*/
pb_x = w->area.x + d->border_width + d->border_padding;
pb_offset = 0;
if(d->vertical)
{
/** \todo maybe prevent to calculate that stuff below over and over again
* (->use static-values) */
pb_height = (int) (ctx->height * d->height + 0.5)
- 2 * (d->border_width + d->border_padding);
if(d->ticks_count && d->ticks_gap)
{
/* '+ d->ticks_gap' because a unit includes a ticks + ticks_gap */
unit = (pb_height + d->ticks_gap) / d->ticks_count;
pb_height = unit * d->ticks_count - d->ticks_gap;
}
pb_y = w->area.y + ((int) (ctx->height * (1 - d->height)) / 2)
+ d->border_width + d->border_padding;
for(i = 0; i < d->data_items; i++)
{
if(d->ticks_count && d->ticks_gap)
{
values_ticks = (int)(d->ticks_count * (d->values[i] - d->min_value[i])
/ (d->max_value[i] - d->min_value[i]) + 0.5);
if(values_ticks)
pb_progress = values_ticks * unit - d->ticks_gap;
else
pb_progress = 0;
}
else
/* e.g.: min = 50; max = 56; 53 should show 50% graph
* (53(val) - 50(min) / (56(max) - 50(min) = 3 / 5 = 0.5 = 50%
* round that ( + 0.5 and (int)) and finally multiply with height
*/
pb_progress = (int)(pb_height * (d->values[i] - d->min_value[i])
/ (d->max_value[i] - d->min_value[i]) + 0.5);
if(d->border_width)
{
/* border rectangle */
rectangle.x = pb_x + pb_offset - d->border_width - d->border_padding;
rectangle.y = pb_y - d->border_width - d->border_padding;
rectangle.width = pb_width + 2 * (d->border_padding + d->border_width);
rectangle.height = pb_height + 2 * (d->border_padding + d->border_width);
if(d->border_padding)
draw_rectangle(ctx, rectangle, 1.0, true, d->bg[i]);
draw_rectangle(ctx, rectangle, d->border_width, false, d->bordercolor[i]);
}
/* new value/progress in px + pattern setup */
if(!d->reverse[i])
{
/* bottom to top */
pattern_rect.x = pb_x;
pattern_rect.y = pb_y + pb_height;
pattern_rect.width = 0;
pattern_rect.height = -pb_height;
}
else
{
/* invert: top with bottom part */
pb_progress = pb_height - pb_progress;
pattern_rect.x = pb_x;
pattern_rect.y = pb_y;
pattern_rect.width = 0;
pattern_rect.height = pb_height;
}
/* bottom part */
if(pb_progress > 0)
{
rectangle.x = pb_x + pb_offset;
rectangle.y = pb_y + pb_height - pb_progress;
rectangle.width = pb_width;
rectangle.height = pb_progress;
/* fg color */
if(!d->reverse[i])
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&(d->fg[i]), d->pfg_center[i], d->pfg_end[i]);
else /*REV: bg */
draw_rectangle(ctx, rectangle, 1.0, true, d->fg_off[i]);
}
/* top part */
if(pb_height - pb_progress > 0) /* not filled area */
{
rectangle.x = pb_x + pb_offset;
rectangle.y = pb_y;
rectangle.width = pb_width;
rectangle.height = pb_height - pb_progress;
/* bg color */
if(!d->reverse[i])
draw_rectangle(ctx, rectangle, 1.0, true, d->fg_off[i]);
else /* REV: fg */
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&(d->fg[i]), d->pfg_center[i], d->pfg_end[i]);
}
/* draw gaps TODO: improve e.g all in one */
if(d->ticks_count && d->ticks_gap)
{
rectangle.width = pb_width;
rectangle.height = d->ticks_gap;
rectangle.x = pb_x + pb_offset;
for(rectangle.y = pb_y + (unit - d->ticks_gap);
pb_y + pb_height - d->ticks_gap >= rectangle.y;
rectangle.y += unit)
draw_rectangle(ctx, rectangle, 1.0, true, d->bg[i]);
}
pb_offset += pb_width + d->gap + 2 * (d->border_width + d->border_padding);
}
}
else /* a horizontal progressbar */
{
pb_height = (int) ((ctx->height * d->height
- d->data_items * 2 * (d->border_width + d->border_padding)
- (d->gap * (d->data_items - 1))) / d->data_items + 0.5);
pb_y = w->area.y + ((int) (ctx->height * (1 - d->height)) / 2)
+ d->border_width + d->border_padding;
for(i = 0; i < d->data_items; i++)
{
if(d->ticks_count && d->ticks_gap)
{
/* +0.5 rounds up ticks -> turn on a tick when half of it is reached */
values_ticks = (int)(d->ticks_count * (d->values[i] - d->min_value[i])
/ (d->max_value[i] - d->min_value[i]) + 0.5);
if(values_ticks)
pb_progress = values_ticks * unit - d->ticks_gap;
else
pb_progress = 0;
}
else
pb_progress = (int)(pb_width * (d->values[i] - d->min_value[i])
/ (d->max_value[i] - d->min_value[i]) + 0.5);
if(d->border_width)
{
/* border rectangle */
rectangle.x = pb_x - d->border_width - d->border_padding;
rectangle.y = pb_y + pb_offset - d->border_width - d->border_padding;
rectangle.width = pb_width + 2 * (d->border_padding + d->border_width);
rectangle.height = pb_height + 2 * (d->border_padding + d->border_width);
if(d->border_padding)
draw_rectangle(ctx, rectangle, 1.0, true, d->bg[i]);
draw_rectangle(ctx, rectangle, d->border_width, false, d->bordercolor[i]);
}
/* new value/progress in px + pattern setup */
if(!d->reverse[i])
{
/* left to right */
pattern_rect.x = pb_x;
pattern_rect.y = pb_y;
pattern_rect.width = pb_width;
pattern_rect.height = 0;
}
else
{
/* reverse: right to left */
pb_progress = pb_width - pb_progress;
pattern_rect.x = pb_x + pb_width;
pattern_rect.y = pb_y;
pattern_rect.width = -pb_width;
pattern_rect.height = 0;
}
/* left part */
if(pb_progress > 0)
{
rectangle.x = pb_x;
rectangle.y = pb_y + pb_offset;
rectangle.width = pb_progress;
rectangle.height = pb_height;
/* fg color */
if(!d->reverse[i])
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&(d->fg[i]), d->pfg_center[i], d->pfg_end[i]);
else /* reverse: bg */
draw_rectangle(ctx, rectangle, 1.0, true, d->fg_off[i]);
}
/* right part */
if(pb_width - pb_progress > 0)
{
rectangle.x = pb_x + pb_progress;
rectangle.y = pb_y + pb_offset;
rectangle.width = pb_width - pb_progress;
rectangle.height = pb_height;
/* bg color */
if(!d->reverse[i])
draw_rectangle(ctx, rectangle, 1.0, true, d->fg_off[i]);
else /* reverse: fg */
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&(d->fg[i]), d->pfg_center[i], d->pfg_end[i]);
}
/* draw gaps TODO: improve e.g all in one */
if(d->ticks_count && d->ticks_gap)
{
rectangle.width = d->ticks_gap;
rectangle.height = pb_height;
rectangle.y = pb_y + pb_offset;
for(rectangle.x = pb_x + (unit - d->ticks_gap);
pb_x + pb_width - d->ticks_gap >= rectangle.x;
rectangle.x += unit)
draw_rectangle(ctx, rectangle, 1.0, true, d->bg[i]);
}
pb_offset += pb_height + d->gap + 2 * (d->border_width + d->border_padding);
}
}
w->area.height = ctx->height;
return w->area.width;
}
static widget_tell_status_t
progressbar_tell(widget_t *widget, const char *property, const char *new_value)
{
Data *d = widget->data;
int i = 0, value;
char *title, *setting;
char *new_val;
bool found;
if(!new_value)
return WIDGET_ERROR_NOVALUE;
/* seperate for saving some cpu cycles (could be put into next else if...) */
else if(!a_strcmp(property, "data"))
{
new_val = a_strdup(new_value);
title = strtok(new_val, " ");
if(!(setting = strtok(NULL, " ")))
{
p_delete(&new_val);
return WIDGET_ERROR_NOVALUE;
}
for(i = 0; i < d->data_items; i++)
if(!a_strcmp(title, d->data_title[i]))
{
value = atof(setting);
d->values[i] = (value < d->min_value[i] ? d->min_value[i] :
(value > d->max_value[i] ? d->max_value[i] : value));
p_delete(&new_val);
return WIDGET_NOERROR;
}
/* no section found -> create one */
progressbar_data_add(d, title);
value = atoi(setting);
d->values[d->data_items - 1] = (value < d->min_value[i] ? d->min_value[i] :
(value > d->max_value[i] ? d->max_value[i] : value));
p_delete(&new_val);
return WIDGET_NOERROR;
}
/* following properties need a datasection */
else if(!a_strcmp(property, "fg")
|| !a_strcmp(property, "fg_off")
|| !a_strcmp(property, "bg")
|| !a_strcmp(property, "bordercolor")
|| !a_strcmp(property, "fg_center")
|| !a_strcmp(property, "fg_end")
|| !a_strcmp(property, "min_value")
|| !a_strcmp(property, "max_value")
|| !a_strcmp(property, "reverse"))
{
/* check if this section is defined already */
new_val = a_strdup(new_value);
title = strtok(new_val, " ");
if(!(setting = strtok(NULL, " ")))
{
p_delete(&new_val);
return WIDGET_ERROR_NOVALUE;
}
for(found = false, i = 0; i < d->data_items; i++)
{
if(!a_strcmp(title, d->data_title[i]))
{
found = true;
break;
}
}
/* no section found -> create one */
if(!found)
progressbar_data_add(d, title);
/* change values accordingly... */
if(!a_strcmp(property, "fg"))
xcolor_new(globalconf.connection, globalconf.default_screen, setting, &(d->fg[i]));
else if(!a_strcmp(property, "bg"))
xcolor_new(globalconf.connection, globalconf.default_screen, setting, &(d->bg[i]));
else if(!a_strcmp(property, "fg_off"))
xcolor_new(globalconf.connection, globalconf.default_screen, setting, &(d->fg_off[i]));
else if(!a_strcmp(property, "bordercolor"))
xcolor_new(globalconf.connection, globalconf.default_screen, setting, &(d->bordercolor[i]));
else if(!a_strcmp(property, "fg_center"))
progressbar_pcolor_set(&(d->pfg_center[i]), setting);
else if(!a_strcmp(property, "fg_end"))
progressbar_pcolor_set(&(d->pfg_end[i]), setting);
else if(!a_strcmp(property, "min_value"))
{
d->min_value[i] = atof(setting);
/* hack to prevent max_value beeing less than min_value
* and also preventing a division by zero when both are equal */
if(d->max_value[i] <= d->min_value[i])
d->max_value[i] = d->max_value[i] + 0.0001;
/* force a actual value into the newly possible range */
if(d->values[i] < d->min_value[i])
d->values[i] = d->min_value[i];
}
else if(!a_strcmp(property, "max_value"))
{
d->max_value[i] = atof(setting);
if(d->min_value[i] >= d->max_value[i])
d->min_value[i] = d->max_value[i] - 0.0001;
if(d->values[i] > d->max_value[i])
d->values[i] = d->max_value[i];
}
else if(!a_strcmp(property, "reverse"))
d->reverse[i] = a_strtobool(setting);
p_delete(&new_val);
return WIDGET_NOERROR;
}
else if(!a_strcmp(property, "gap"))
d->gap = atoi(new_value);
else if(!a_strcmp(property, "ticks_count"))
d->ticks_count = atoi(new_value);
else if(!a_strcmp(property, "ticks_gap"))
d->ticks_gap = atoi(new_value);
else if(!a_strcmp(property, "border_padding"))
d->border_padding = atoi(new_value);
else if(!a_strcmp(property, "border_width"))
d->border_width = atoi(new_value);
else if(!a_strcmp(property, "width"))
d->width = atoi(new_value);
else if(!a_strcmp(property, "height"))
d->height = atof(new_value);
else if(!a_strcmp(property, "vertical"))
d->vertical = a_strtobool(new_value);
else
return WIDGET_ERROR;
return WIDGET_NOERROR;
}
widget_t *
progressbar_new(alignment_t align)
{
widget_t *w;
Data *d;
w = p_new(widget_t, 1);
widget_common_new(w);
w->align = align;
w->draw = progressbar_draw;
w->tell = progressbar_tell;
d = w->data = p_new(Data, 1);
d->height = 0.80;
d->width = 80;
d->ticks_gap = 1;
d->border_width = 1;
d->gap = 2;
return w;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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