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sysprof: add very simple graph generation

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This commit is contained in:
Christian Hergert
2023-08-23 15:25:41 -07:00
parent 9de7199373
commit cfc40225c9
1 changed files with 82 additions and 0 deletions
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82
src/sysprof/sysprof-flame-graph.c
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@ -20,6 +20,9 @@
#include "config.h"
#include "sysprof-callgraph-private.h"
#include "sysprof-category-icon.h"
#include "sysprof-flame-graph.h"
struct _SysprofFlameGraph
@ -39,6 +42,82 @@ G_DEFINE_FINAL_TYPE (SysprofFlameGraph, sysprof_flame_graph, GTK_TYPE_WIDGET)
static GParamSpec *properties [N_PROPS];
static void
sysprof_flame_graph_snapshot_node (GtkSnapshot *snapshot,
SysprofCallgraphNode *node,
const graphene_rect_t *area,
int row_height,
double min_width)
{
const GdkRGBA *color;
g_assert (GTK_IS_SNAPSHOT (snapshot));
g_assert (node != NULL);
g_assert (area != NULL);
color = sysprof_callgraph_category_get_color (node->category);
gtk_snapshot_append_color (snapshot,
color,
&GRAPHENE_RECT_INIT (area->origin.x,
area->origin.y + area->size.height - row_height,
area->size.width,
row_height));
if (node->children != NULL)
{
graphene_rect_t child_area;
guint64 weight = 0;
for (SysprofCallgraphNode *child = node->children; child; child = child->next)
weight += child->count;
child_area.origin.x = area->origin.x;
child_area.origin.y = area->origin.y;
child_area.size.height = area->size.height - row_height;
for (SysprofCallgraphNode *child = node->children; child; child = child->next)
{
double width = child->count / (double)weight * area->size.width;
if (width < min_width)
child_area.size.width = min_width;
else
child_area.size.width = width;
child_area.size.width = area->origin.x + area->size.width - child_area.origin.x;
sysprof_flame_graph_snapshot_node (snapshot, child, &child_area, row_height, min_width);
child_area.origin.x += width;
}
}
}
static void
sysprof_flame_graph_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
SysprofFlameGraph *self = (SysprofFlameGraph *)widget;
int row_height;
g_assert (SYSPROF_IS_FLAME_GRAPH (self));
g_assert (GTK_IS_SNAPSHOT (snapshot));
if (self->callgraph == NULL)
return;
row_height = MIN (24, gtk_widget_get_height (widget) / (double)self->callgraph->height);
sysprof_flame_graph_snapshot_node (snapshot,
&self->callgraph->root,
&GRAPHENE_RECT_INIT (0, 0,
gtk_widget_get_width (widget),
gtk_widget_get_height (widget)),
row_height,
1. / (double)gtk_widget_get_scale_factor (widget));
}
static void
sysprof_flame_graph_dispose (GObject *object)
{
@ -91,11 +170,14 @@ static void
sysprof_flame_graph_class_init (SysprofFlameGraphClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = sysprof_flame_graph_dispose;
object_class->get_property = sysprof_flame_graph_get_property;
object_class->set_property = sysprof_flame_graph_set_property;
widget_class->snapshot = sysprof_flame_graph_snapshot;
properties[PROP_CALLGRAPH] =
g_param_spec_object ("callgraph", NULL, NULL,
SYSPROF_TYPE_CALLGRAPH,