varun-r-mallya/sysprof
1
0
Fork 0
mirror of https://github.com/varun-r-mallya/sysprof.git synced 2025-12-31 20:36:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

line-visualizer: teach draw code how to fill in lines

Browse Source 
We don't expose this via API yet, but it's handy to have it here so we can
build upon it for doing stacked drawings (as useful for things like memory
usage graphs by type).
This commit is contained in:
Christian Hergert
2017-09-28 13:24:58 -07:00
parent 85ff333491
commit cad87dee49
1 changed files with 28 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
lib/sp-line-visualizer-row.c
View File

@ -72,6 +72,7 @@ typedef struct
GdkRGBA background;
GdkRGBA foreground;
guint use_default_style : 1;
guint fill : 1;
} LineInfo;
typedef struct
@ -139,12 +140,15 @@ sp_line_visualizer_row_draw (GtkWidget *widget,
SpLineVisualizerRowPrivate *priv = sp_line_visualizer_row_get_instance_private (self);
GtkStyleContext *style_context;
GtkStateFlags flags;
GtkAllocation alloc;
GdkRGBA foreground;
gboolean ret;
g_assert (SP_IS_LINE_VISUALIZER_ROW (widget));
g_assert (cr != NULL);
gtk_widget_get_allocation (widget, &alloc);
ret = GTK_WIDGET_CLASS (sp_line_visualizer_row_parent_class)->draw (widget, cr);
if (priv->cache == NULL)
@ -160,6 +164,7 @@ sp_line_visualizer_row_draw (GtkWidget *widget,
const LineInfo *line_info = &g_array_index (priv->lines, LineInfo, line);
const Point *fpoints;
guint n_fpoints = 0;
GdkRGBA color;
fpoints = point_cache_get_points (priv->cache, line_info->id, &n_fpoints);
@ -179,7 +184,15 @@ sp_line_visualizer_row_draw (GtkWidget *widget,
last_x = points[0].x;
last_y = points[0].y;
cairo_move_to (cr, last_x, last_y);
if (line_info->fill)
{
cairo_move_to (cr, last_x, alloc.height);
cairo_line_to (cr, last_x, last_y);
}
else
{
cairo_move_to (cr, last_x, last_y);
}
for (guint i = 1; i < n_fpoints; i++)
{
@ -194,14 +207,25 @@ sp_line_visualizer_row_draw (GtkWidget *widget,
last_y = points[i].y;
}
if (line_info->fill)
{
cairo_line_to (cr, last_x, alloc.height);
cairo_close_path (cr);
}
cairo_set_line_width (cr, line_info->line_width);
if (line_info->use_default_style)
gdk_cairo_set_source_rgba (cr, &foreground);
color = foreground;
else
gdk_cairo_set_source_rgba (cr, &line_info->foreground);
color = line_info->foreground;
cairo_stroke (cr);
gdk_cairo_set_source_rgba (cr, &color);
if (line_info->fill)
cairo_fill (cr);
else
cairo_stroke (cr);
}
}