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libsysprof-ui: pan when selection changes

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This helps keep things in view while moving around.
This commit is contained in:
Christian Hergert
2019-05-15 18:58:22 -07:00
parent aa2772ef87
commit 3210926f15
3 changed files with 80 additions and 6 deletions
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67
src/libsysprof-ui/sysprof-marks-view.c
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@ -31,6 +31,9 @@ typedef struct
{
SysprofZoomManager *zoom_manager;
gint64 capture_begin_time;
gint64 capture_end_time;
/* Template objects */
GtkScrolledWindow *scroller;
GtkTreeView *tree_view;
@ -48,6 +51,52 @@ static GParamSpec *properties [N_PROPS];
G_DEFINE_TYPE_WITH_PRIVATE (SysprofMarksView, sysprof_marks_view, GTK_TYPE_BIN)
static void
sysprof_marks_view_selection_changed_cb (SysprofMarksView *self,
GtkTreeSelection *selection)
{
SysprofMarksViewPrivate *priv = sysprof_marks_view_get_instance_private (self);
GtkTreeModel *model;
GtkTreeIter iter;
g_assert (SYSPROF_IS_MARKS_VIEW (self));
g_assert (GTK_IS_TREE_SELECTION (selection));
if (gtk_tree_selection_get_selected (selection, &model, &iter))
{
GtkAdjustment *adj;
gdouble x;
gint64 begin_time;
gdouble lower;
gdouble upper;
gdouble value;
gdouble page_size;
gint width;
gtk_tree_model_get (model, &iter,
SYSPROF_MARKS_MODEL_COLUMN_BEGIN_TIME, &begin_time,
-1);
adj = gtk_scrolled_window_get_hadjustment (priv->scroller);
width = gtk_tree_view_column_get_width (priv->duration_column);
x = sysprof_zoom_manager_get_offset_at_time (priv->zoom_manager,
begin_time - priv->capture_begin_time,
width);
g_object_get (adj,
"lower", &lower,
"upper", &upper,
"value", &value,
"page-size", &page_size,
NULL);
if (x < value)
gtk_adjustment_set_value (adj, MAX (lower, x - (page_size / 3.0)));
else if (x > (value + page_size))
gtk_adjustment_set_value (adj, MIN (upper - page_size, (x - (page_size / 3.0))));
}
}
static void
sysprof_marks_view_finalize (GObject *object)
{
@ -139,7 +188,15 @@ sysprof_marks_view_class_init (SysprofMarksViewClass *klass)
static void
sysprof_marks_view_init (SysprofMarksView *self)
{
SysprofMarksViewPrivate *priv = sysprof_marks_view_get_instance_private (self);
gtk_widget_init_template (GTK_WIDGET (self));
g_signal_connect_object (gtk_tree_view_get_selection (priv->tree_view),
"changed",
G_CALLBACK (sysprof_marks_view_selection_changed_cb),
self,
G_CONNECT_SWAPPED);
}
GtkWidget *
@ -159,8 +216,6 @@ sysprof_marks_view_load_cb (GObject *object,
SysprofMarksViewPrivate *priv;
SysprofCaptureReader *reader;
SysprofMarksView *self;
gint64 capture_begin_time;
gint64 capture_end_time;
g_assert (G_IS_ASYNC_RESULT (result));
g_assert (G_IS_TASK (task));
@ -177,12 +232,12 @@ sysprof_marks_view_load_cb (GObject *object,
reader = g_task_get_task_data (task);
g_assert (reader != NULL);
capture_begin_time = sysprof_capture_reader_get_start_time (reader);
capture_end_time = sysprof_capture_reader_get_end_time (reader);
priv->capture_begin_time = sysprof_capture_reader_get_start_time (reader);
priv->capture_end_time = sysprof_capture_reader_get_end_time (reader);
g_object_set (priv->duration_cell,
"capture-begin-time", capture_begin_time,
"capture-end-time", capture_end_time,
"capture-begin-time", priv->capture_begin_time,
"capture-end-time", priv->capture_end_time,
"zoom-manager", priv->zoom_manager,
NULL);