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graph: use round()

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Signed-off-by: Julien Danjou <julien@danjou.info>
This commit is contained in:
Julien Danjou 2008-06-12 14:59:06 +02:00
parent a7d89a6c24
commit 30a19041c9
1 changed files with 9 additions and 11 deletions
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20
widgets/graph.c
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@ -20,6 +20,8 @@
*
*/
#include <math.h>
#include "widget.h"
#include "screen.h"
#include "common/draw.h"
@ -154,10 +156,10 @@ graph_draw(draw_context_t *ctx,
w->area.y = 0;
/* box = the graph inside the rectangle */
if(!(d->box_height))
d->box_height = (int) (ctx->height * d->height + 0.5) - 2;
if(!d->box_height)
d->box_height = round(ctx->height * d->height) - 2;
margin_top = (int)((ctx->height - (d->box_height + 2)) / 2 + 0.5) + w->area.y;
margin_top = round((ctx->height - (d->box_height + 2)) / 2) + w->area.y;
/* draw background */
rectangle.x = w->area.x + 1;
@ -383,8 +385,7 @@ graph_tell(widget_t *widget, const char *property, const char *new_value)
/* recalculate */
for (i = 0; i < d->size; i++)
graph->lines[i] = (int) (graph->values[i] * d->box_height
/ graph->current_max + 0.5);
graph->lines[i] = round(graph->values[i] * d->box_height / graph->current_max);
}
/* old max_index reached + current_max > normal, re-check/generate */
else if(graph->max_index == graph->index
@ -399,18 +400,15 @@ graph_tell(widget_t *widget, const char *property, const char *new_value)
/* recalculate */
for(i = 0; i < d->size; i++)
graph->lines[i] = (int) (graph->values[i] * d->box_height
/ graph->current_max + 0.5);
graph->lines[i] = round(graph->values[i] * d->box_height / graph->current_max);
}
else
graph->lines[graph->index] = (int) (value * d->box_height
/ graph->current_max + 0.5);
graph->lines[graph->index] = round(value * d->box_height / graph->current_max);
}
else /* scale option is false - limit to d->box_height */
{
if(value < graph->max_value)
graph->lines[graph->index] = (int) (value * d->box_height
/ graph->max_value + 0.5);
graph->lines[graph->index] = round(value * d->box_height / graph->max_value);
else
graph->lines[graph->index] = d->box_height;
}