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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 "common/tokenize.h"
#include "widget.h"
extern awesome_t globalconf;
typedef struct bar_t bar_t;
/** Progressbar bar data structure */
struct bar_t
{
/** Title of the data/bar */
char *title;
/** 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;
/** Pointer to value */
float value;
/** Reverse filling */
bool reverse;
/** 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 border_color;
/** The next and previous bar in the list */
bar_t *next, *prev;
};
/** Delete a bar.
* \param bar The bar to annihilate.
*/
static void
bar_delete(bar_t **bar)
{
p_delete(&(*bar)->title);
p_delete(&(*bar)->pfg_center);
p_delete(&(*bar)->pfg_end);
p_delete(bar);
}
DO_SLIST(bar_t, bar, bar_delete)
/** Progressbar private data structure */
typedef struct
{
/** 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;
/** 90 Degree's turned */
bool vertical;
/** Height 0-1, where 1.0 is height of bar */
float height;
/** The bars */
bar_t *bars;
} progressbar_data_t;
/** Add a new bar to the progressbar private data structure.
* \param d The private data structure.
* \param title The graph title.
*/
static bar_t *
progressbar_bar_add(progressbar_data_t *d, const char *title)
{
bar_t *bar = p_new(bar_t, 1);
bar->title = a_strdup(title);
bar->fg = xcolor_copy(&globalconf.colors.fg);
bar->fg_off = xcolor_copy(&globalconf.colors.bg);
bar->bg = xcolor_copy(&globalconf.colors.bg);
bar->border_color = xcolor_copy(&globalconf.colors.fg);
bar->max_value = 100.0;
/* append the bar in the list */
bar_list_append(&d->bars, bar);
return bar;
}
/** Draw a progressbar.
* \param ctx The draw context.
* \param screen The screen we're drawing for.
* \param w The widget node we're drawing for.
* \param offset Offset to draw at.
* \param used Space already used.
* \param object The object pointer we're drawing onto.
* \return The width used.
*/
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 values_ticks, pb_x, pb_y, pb_height, pb_width, pb_progress, pb_offset;
int unit = 0, nbbars = 0; /* tick + gap */
area_t rectangle, pattern_rect;
progressbar_data_t *d = w->widget->data;
bar_t *bar;
if(!d->bars)
return 0;
for(bar = d->bars; bar; bar = bar->next)
nbbars++;
if(d->vertical)
{
pb_width = (int) ((d->width - 2 * (d->border_width + d->border_padding) * nbbars
- d->gap * (nbbars - 1)) / nbbars);
w->area.width = nbbars
* (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(bar = d->bars; bar; bar = bar->next)
{
if(d->ticks_count && d->ticks_gap)
{
values_ticks = (int)(d->ticks_count * (bar->value - bar->min_value)
/ (bar->max_value - bar->min_value) + 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 * (bar->value - bar->min_value)
/ (bar->max_value - bar->min_value) + 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, bar->bg);
draw_rectangle(ctx, rectangle, d->border_width, false, bar->border_color);
}
pattern_rect.x = pb_x;
pattern_rect.width = 0;
pattern_rect.y = pb_y;
/* new value/progress in px + pattern setup */
if(bar->reverse)
{
/* invert: top with bottom part */
pb_progress = pb_height - pb_progress;
pattern_rect.height = pb_height;
}
else
{
/* bottom to top */
pattern_rect.y += pb_height;
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(bar->reverse)
draw_rectangle(ctx, rectangle, 1.0, true, bar->fg_off);
else
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&bar->fg, bar->pfg_center, bar->pfg_end);
}
/* 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(bar->reverse)
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&bar->fg, bar->pfg_center, bar->pfg_end);
else
draw_rectangle(ctx, rectangle, 1.0, true, bar->fg_off);
}
/* 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, bar->bg);
}
pb_offset += pb_width + d->gap + 2 * (d->border_width + d->border_padding);
}
}
else /* a horizontal progressbar */
{
pb_height = (int) ((ctx->height * d->height
- nbbars * 2 * (d->border_width + d->border_padding)
- (d->gap * (nbbars - 1))) / nbbars + 0.5);
pb_y = w->area.y + ((int) (ctx->height * (1 - d->height)) / 2)
+ d->border_width + d->border_padding;
for(bar = d->bars; bar; bar = bar->next)
{
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 * (bar->value - bar->min_value)
/ (bar->max_value - bar->min_value) + 0.5);
if(values_ticks)
pb_progress = values_ticks * unit - d->ticks_gap;
else
pb_progress = 0;
}
else
pb_progress = (int) (pb_width * (bar->value - bar->min_value)
/ (bar->max_value - bar->min_value) + 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, bar->bg);
draw_rectangle(ctx, rectangle, d->border_width, false, bar->border_color);
}
pattern_rect.y = pb_y;
pattern_rect.height = 0;
pattern_rect.x = pb_x;
/* new value/progress in px + pattern setup */
if(bar->reverse)
{
/* reverse: right to left */
pb_progress = pb_width - pb_progress;
pattern_rect.x += pb_width;
pattern_rect.width = - pb_width;
}
else
/* left to right */
pattern_rect.width = pb_width;
/* 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(bar->reverse)
draw_rectangle(ctx, rectangle, 1.0, true, bar->fg_off);
else
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&bar->fg, bar->pfg_center, bar->pfg_end);
}
/* 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(bar->reverse)
draw_rectangle_gradient(ctx, rectangle, 1.0, true, pattern_rect,
&bar->fg, bar->pfg_center, bar->pfg_end);
else
draw_rectangle(ctx, rectangle, 1.0, true, bar->fg_off);
}
/* 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, bar->bg);
}
pb_offset += pb_height + d->gap + 2 * (d->border_width + d->border_padding);
}
}
w->area.height = ctx->height;
return w->area.width;
}
/** Set various progressbar bars properties:
* \param L The Lua VM state.
* \return The number of elements pushed on the stack.
* \luastack
* \lvalue A widget.
* \lparam A bar name.
* \lparam A table with keys as properties names.
*/
int
luaA_progressbar_bar_properties_set(lua_State *L)
{
widget_t **widget = luaA_checkudata(L, 1, "widget");
const char *buf, *title = luaL_checkstring(L, 2);
bar_t *bar;
progressbar_data_t *d = (*widget)->data;
xcolor_t color;
luaA_checktable(L, 3);
/* check if this section is defined already */
for(bar = d->bars; bar; bar = bar->next)
if(!a_strcmp(title, bar->title))
break;
/* no bar found -> create one */
if(!bar)
bar = progressbar_bar_add(d, title);
if((buf = luaA_getopt_string(L, 3, "fg", NULL))
&& xcolor_new(globalconf.connection, globalconf.default_screen, buf, &color))
{
xcolor_wipe(&bar->fg);
bar->fg = color;
}
if((buf = luaA_getopt_string(L, 3, "bg", NULL))
&& xcolor_new(globalconf.connection, globalconf.default_screen, buf, &color))
{
xcolor_wipe(&bar->bg);
bar->bg = color;
}
if((buf = luaA_getopt_string(L, 3, "border_color", NULL))
&& xcolor_new(globalconf.connection, globalconf.default_screen, buf, &color))
{
xcolor_wipe(&bar->border_color);
bar->border_color = color;
}
if((buf = luaA_getopt_string(L, 3, "fg_center", NULL))
&& xcolor_new(globalconf.connection, globalconf.default_screen, buf, &color))
{
xcolor_wipe(bar->pfg_center);
bar->pfg_end = p_dup(&color, 1);;
}
if((buf = luaA_getopt_string(L, 3, "fg_end", NULL))
&& xcolor_new(globalconf.connection, globalconf.default_screen, buf, &color))
{
xcolor_wipe(bar->pfg_end);
bar->pfg_end = p_dup(&color, 1);;
}
bar->min_value = luaA_getopt_number(L, 3, "min_value", bar->min_value);
/* hack to prevent max_value beeing less than min_value
* and also preventing a division by zero when both are equal */
if(bar->max_value <= bar->min_value)
bar->max_value = bar->max_value + 0.0001;
/* force a actual value into the newly possible range */
if(bar->value < bar->min_value)
bar->value = bar->min_value;
bar->max_value = luaA_getopt_number(L, 3, "max_value", bar->max_value);
if(bar->min_value >= bar->max_value)
bar->min_value = bar->max_value - 0.0001;
if(bar->value > bar->max_value)
bar->value = bar->max_value;
bar->reverse = luaA_getopt_boolean(L, 3, "reverse", bar->reverse);
widget_invalidate_bywidget(*widget);
return 0;
}
/** Add a value to a progressbar bar.
* \param L The Lua VM state.
* \return The number of elements pushed on the stack.
* \luastack
* \lvalue A widget.
* \lparam A bar name.
* \lparam A data value.
*/
int
luaA_progressbar_bar_data_add(lua_State *L)
{
widget_t **widget = luaA_checkudata(L, 1, "widget");
const char *title = luaL_checkstring(L, 2);
progressbar_data_t *d = (*widget)->data;
bar_t *bar;
/* check if this section is defined already */
for(bar = d->bars; bar; bar = bar->next)
if(!a_strcmp(title, bar->title))
break;
/* no bar found -> create one */
if(!bar)
bar = progressbar_bar_add(d, title);
bar->value = luaL_checknumber(L, 3);
bar->value = MAX(bar->min_value, MIN(bar->max_value, bar->value));
widget_invalidate_bywidget(*widget);
return 0;
}
/** Index function for progressbar.
* \param L The Lua VM state.
* \return The number of elements pushed on the stack.
*/
static int
luaA_progressbar_index(lua_State *L)
{
size_t len;
widget_t **widget = luaA_checkudata(L, 1, "widget");
progressbar_data_t *d = (*widget)->data;
const char *attr = luaL_checklstring(L, 2, &len);
switch(a_tokenize(attr, len))
{
case A_TK_BAR_PROPERTIES_SET:
lua_pushcfunction(L, luaA_progressbar_bar_properties_set);
break;
case A_TK_BAR_DATA_ADD:
lua_pushcfunction(L, luaA_progressbar_bar_data_add);
break;
case A_TK_GAP:
lua_pushnumber(L, d->gap);
break;
case A_TK_TICKS_GAP:
lua_pushnumber(L, d->ticks_gap);
break;
case A_TK_TICKS_COUNT:
lua_pushnumber(L, d->ticks_count);
break;
case A_TK_BORDER_PADDING:
lua_pushnumber(L, d->border_padding);
break;
case A_TK_BORDER_WIDTH:
lua_pushnumber(L, d->border_width);
break;
case A_TK_WIDTH:
lua_pushnumber(L, d->width);
break;
case A_TK_HEIGHT:
lua_pushnumber(L, d->height);
break;
case A_TK_VERTICAL:
lua_pushnumber(L, d->vertical);
break;
default:
return 0;
}
return 1;
}
/** Newindex function for progressbar.
* \param L The Lua VM state.
* \return The number of elements pushed on the stack.
*/
static int
luaA_progressbar_newindex(lua_State *L)
{
size_t len;
widget_t **widget = luaA_checkudata(L, 1, "widget");
progressbar_data_t *d = (*widget)->data;
const char *attr = luaL_checklstring(L, 2, &len);
switch(a_tokenize(attr, len))
{
case A_TK_GAP:
d->gap = luaL_checknumber(L, 3);
break;
case A_TK_TICKS_COUNT:
d->ticks_count = luaL_checknumber(L, 3);
break;
case A_TK_TICKS_GAP:
d->ticks_gap = luaL_checknumber(L, 3);
break;
case A_TK_BORDER_PADDING:
d->border_padding = luaL_checknumber(L, 3);
break;
case A_TK_BORDER_WIDTH:
d->border_width = luaL_checknumber(L, 3);
break;
case A_TK_WIDTH:
d->width = luaL_checknumber(L, 3);
break;
case A_TK_HEIGHT:
d->height = luaL_checknumber(L, 3);
break;
case A_TK_VERTICAL:
d->vertical = luaA_checkboolean(L, 3);
break;
default:
return 0;
}
widget_invalidate_bywidget(*widget);
return 0;
}
/** Destroy a progressbar.
* \param widget The widget to kill.
*/
static void
progressbar_destructor(widget_t *widget)
{
progressbar_data_t *d = widget->data;
bar_list_wipe(&d->bars);
p_delete(&d);
}
/** Create a new progressbar.
* \param align Alignment of the widget.
* \return A brand new progressbar.
*/
widget_t *
progressbar_new(alignment_t align)
{
widget_t *w;
progressbar_data_t *d;
w = p_new(widget_t, 1);
widget_common_new(w);
w->align = align;
w->draw = progressbar_draw;
w->index = luaA_progressbar_index;
w->newindex = luaA_progressbar_newindex;
w->destructor = progressbar_destructor;
d = w->data = p_new(progressbar_data_t, 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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