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libsysprof-gtk: add snapshot_motion to chart layer

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This allows snapshoting the motion highlight separate from the rest of the
layer so that we can have better render tree diffs. Otherwise we risk
having to snapshot a large dataset from the chart layer itself rather than
just the hightlight areas that changed.
This commit is contained in:
Christian Hergert
2023-06-20 12:45:43 -07:00
parent 86f5fc6338
commit d68f2ff87a
3 changed files with 130 additions and 3 deletions
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104
src/libsysprof-gtk/sysprof-chart.c
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@ -26,6 +26,11 @@ typedef struct
{
SysprofSession *session;
char *title;
double motion_x;
double motion_y;
guint pointer_in_chart : 1;
} SysprofChartPrivate;
enum {
@ -39,6 +44,58 @@ G_DEFINE_TYPE_WITH_PRIVATE (SysprofChart, sysprof_chart, GTK_TYPE_WIDGET)
static GParamSpec *properties [N_PROPS];
static void
sysprof_chart_motion_enter_cb (SysprofChart *self,
double x,
double y,
GtkEventControllerMotion *motion)
{
SysprofChartPrivate *priv = sysprof_chart_get_instance_private (self);
g_assert (SYSPROF_IS_CHART (self));
g_assert (GTK_IS_EVENT_CONTROLLER_MOTION (motion));
priv->motion_x = x;
priv->motion_y = y;
priv->pointer_in_chart = TRUE;
gtk_widget_queue_draw (GTK_WIDGET (self));
}
static void
sysprof_chart_motion_cb (SysprofChart *self,
double x,
double y,
GtkEventControllerMotion *motion)
{
SysprofChartPrivate *priv = sysprof_chart_get_instance_private (self);
g_assert (SYSPROF_IS_CHART (self));
g_assert (GTK_IS_EVENT_CONTROLLER_MOTION (motion));
priv->motion_x = x;
priv->motion_y = y;
gtk_widget_queue_draw (GTK_WIDGET (self));
}
static void
sysprof_chart_motion_leave_cb (SysprofChart *self,
GtkEventControllerMotion *motion)
{
SysprofChartPrivate *priv = sysprof_chart_get_instance_private (self);
g_assert (SYSPROF_IS_CHART (self));
g_assert (GTK_IS_EVENT_CONTROLLER_MOTION (motion));
priv->motion_x = -1;
priv->motion_y = -1;
priv->pointer_in_chart = FALSE;
gtk_widget_queue_draw (GTK_WIDGET (self));
}
static void
sysprof_chart_size_allocate (GtkWidget *widget,
int width,
@ -57,6 +114,29 @@ sysprof_chart_size_allocate (GtkWidget *widget,
baseline);
}
static void
sysprof_chart_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
SysprofChart *self = (SysprofChart *)widget;
SysprofChartPrivate *priv = sysprof_chart_get_instance_private (self);
g_assert (SYSPROF_IS_CHART (self));
GTK_WIDGET_CLASS (sysprof_chart_parent_class)->snapshot (widget, snapshot);
if (priv->pointer_in_chart)
{
GtkWidget *pick = gtk_widget_pick (widget, priv->motion_x, priv->motion_y, GTK_PICK_DEFAULT);
if (SYSPROF_IS_CHART_LAYER (pick))
sysprof_chart_layer_snapshot_motion (SYSPROF_CHART_LAYER (pick),
snapshot,
priv->motion_x,
priv->motion_y);
}
}
static void
sysprof_chart_dispose (GObject *object)
{
@ -130,6 +210,7 @@ sysprof_chart_class_init (SysprofChartClass *klass)
object_class->set_property = sysprof_chart_set_property;
widget_class->size_allocate = sysprof_chart_size_allocate;
widget_class->snapshot = sysprof_chart_snapshot;
properties [PROP_SESSION] =
g_param_spec_object ("session", NULL, NULL,
@ -147,6 +228,29 @@ sysprof_chart_class_init (SysprofChartClass *klass)
static void
sysprof_chart_init (SysprofChart *self)
{
SysprofChartPrivate *priv = sysprof_chart_get_instance_private (self);
GtkEventController *motion;
priv->motion_x = -1;
priv->motion_y = -1;
motion = gtk_event_controller_motion_new ();
g_signal_connect_object (motion,
"enter",
G_CALLBACK (sysprof_chart_motion_enter_cb),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (motion,
"leave",
G_CALLBACK (sysprof_chart_motion_leave_cb),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (motion,
"motion",
G_CALLBACK (sysprof_chart_motion_cb),
self,
G_CONNECT_SWAPPED);
gtk_widget_add_controller (GTK_WIDGET (self), g_steal_pointer (&motion));
}
const char *