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sysprof: scroll to the bottom of the flame graph

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Unfortunately we don't have a good way to do this in GtkScrolledWindow
where you have an initial gravity pulling you to the bottom of a viewport.

We might be able to fake it with a focusable widget, but that sounds like
more work than just animating to the bottom of the viewport.

Related #93
This commit is contained in:
Christian Hergert
2023-08-28 14:13:59 -07:00
parent dc15089133
commit 88dc13d869
1 changed files with 78 additions and 0 deletions
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78
src/sysprof/sysprof-flame-graph.c
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@ -22,6 +22,7 @@
#include <glib/gi18n.h>
#include "sysprof-animation.h"
#include "sysprof-callgraph-private.h"
#include "sysprof-category-icon.h"
#include "sysprof-color-iter-private.h"
@ -51,8 +52,14 @@ struct _SysprofFlameGraph
SysprofCallgraphNode *root;
FlameRectangle *under_pointer;
SysprofAnimation *animation;
double motion_x;
double motion_y;
guint queued_scroll;
guint did_animation : 1;
};
enum {
@ -118,6 +125,72 @@ find_node_at_coord (SysprofFlameGraph *self,
return bsearch (&search, self->nodes->data, self->nodes->len, sizeof (FlameRectangle), search_compare);
}
static void
sysprof_flame_graph_animation_done (gpointer data)
{
g_autoptr(SysprofFlameGraph) self = data;
g_assert (SYSPROF_IS_FLAME_GRAPH (self));
self->did_animation = TRUE;
}
static gboolean
sysprof_flame_graph_do_scroll (gpointer data)
{
SysprofFlameGraph *self = data;
SysprofAnimation *animation;
GtkAdjustment *adj;
GtkWidget *scroller;
double upper;
double page_size;
g_assert (SYSPROF_IS_FLAME_GRAPH (self));
self->queued_scroll = 0;
if (self->animation)
{
sysprof_animation_stop (self->animation);
g_clear_weak_pointer (&self->animation);
}
if (!(scroller = gtk_widget_get_ancestor (GTK_WIDGET (self), GTK_TYPE_SCROLLED_WINDOW)) ||
!(adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (scroller))))
return G_SOURCE_REMOVE;
upper = gtk_adjustment_get_upper (adj);
page_size = gtk_adjustment_get_page_size (adj);
if (page_size > upper)
return G_SOURCE_REMOVE;
animation = sysprof_object_animate_full (adj,
SYSPROF_ANIMATION_EASE_IN_OUT_CUBIC,
250,
gtk_widget_get_frame_clock (GTK_WIDGET (self)),
sysprof_flame_graph_animation_done,
g_object_ref (self),
"value", upper - page_size,
NULL);
g_set_weak_pointer (&self->animation, animation);
return G_SOURCE_REMOVE;
}
static void
sysprof_flame_graph_queue_scroll (SysprofFlameGraph *self)
{
g_assert (SYSPROF_IS_FLAME_GRAPH (self));
if (self->did_animation)
return;
if (self->queued_scroll == 0)
self->queued_scroll = g_timeout_add (150, sysprof_flame_graph_do_scroll, self);
}
static void
sysprof_flame_graph_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
@ -313,6 +386,8 @@ sysprof_flame_graph_size_allocate (GtkWidget *widget,
g_assert (SYSPROF_IS_FLAME_GRAPH (self));
g_clear_pointer (&self->rendered, gsk_render_node_unref);
sysprof_flame_graph_queue_scroll (self);
}
static gboolean
@ -399,6 +474,9 @@ sysprof_flame_graph_dispose (GObject *object)
{
SysprofFlameGraph *self = (SysprofFlameGraph *)object;
g_clear_handle_id (&self->queued_scroll, g_source_remove);
g_clear_weak_pointer (&self->animation);
g_clear_pointer (&self->rendered, gsk_render_node_unref);
g_clear_pointer (&self->nodes, g_array_unref);
g_clear_object (&self->callgraph);