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line-visualizer: add support for filling line areas

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This allows us to fill the area and set it to an RGBA instead of the same
as the line color itself.
This commit is contained in:
Christian Hergert
2018-05-19 13:24:58 +01:00
parent fc0eff6d4b
commit 0535691afa
2 changed files with 65 additions and 11 deletions
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60
lib/visualizers/sp-line-visualizer-row.c
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@ -69,8 +69,8 @@ typedef struct
{
guint id;
gdouble line_width;
GdkRGBA background;
GdkRGBA foreground;
GdkRGBA background;
guint use_default_style : 1;
guint fill : 1;
} LineInfo;
@ -215,17 +215,19 @@ sp_line_visualizer_row_draw (GtkWidget *widget,
cairo_set_line_width (cr, line_info->line_width);
if (line_info->fill)
{
gdk_cairo_set_source_rgba (cr, &line_info->background);
cairo_fill_preserve (cr);
}
if (line_info->use_default_style)
color = foreground;
else
color = line_info->foreground;
gdk_cairo_set_source_rgba (cr, &color);
if (line_info->fill)
cairo_fill (cr);
else
cairo_stroke (cr);
cairo_stroke (cr);
}
}
@ -683,3 +685,49 @@ sp_line_visualizer_row_load_data_finish (SpLineVisualizerRow *self,
return g_task_propagate_pointer (G_TASK (result), error);
}
void
sp_line_visualizer_row_set_line_width (SpLineVisualizerRow *self,
guint counter_id,
gdouble width)
{
SpLineVisualizerRowPrivate *priv = sp_line_visualizer_row_get_instance_private (self);
g_return_if_fail (SP_IS_LINE_VISUALIZER_ROW (self));
for (guint i = 0; i < priv->lines->len; i++)
{
LineInfo *info = &g_array_index (priv->lines, LineInfo, i);
if (info->id == counter_id)
{
info->line_width = width;
sp_line_visualizer_row_queue_reload (self);
break;
}
}
}
void
sp_line_visualizer_row_set_fill (SpLineVisualizerRow *self,
guint counter_id,
const GdkRGBA *color)
{
SpLineVisualizerRowPrivate *priv = sp_line_visualizer_row_get_instance_private (self);
g_return_if_fail (SP_IS_LINE_VISUALIZER_ROW (self));
for (guint i = 0; i < priv->lines->len; i++)
{
LineInfo *info = &g_array_index (priv->lines, LineInfo, i);
if (info->id == counter_id)
{
info->fill = !!color;
if (color != NULL)
info->background = *color;
sp_line_visualizer_row_queue_reload (self);
break;
}
}
}