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revealer: port to progress tracker

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This commit is contained in:
Matt Watson
2016-03-25 02:01:25 -07:00
parent 62b224a8df
commit 2ff62595ed
1 changed files with 14 additions and 36 deletions
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50
gtk/gtkrevealer.c
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@ -25,6 +25,7 @@
#include <gdk/gdk.h>
#include "gtktypebuiltins.h"
#include "gtkprivate.h"
#include "gtkprogresstrackerprivate.h"
#include "gtkintl.h"
#include "fallback-c89.c"
@ -85,8 +86,7 @@ typedef struct {
gdouble target_pos;
guint tick_id;
gint64 start_time;
gint64 end_time;
GtkProgressTracker tracker;
} GtkRevealerPrivate;
static GParamSpec *props[LAST_PROP] = { NULL, };
@ -568,33 +568,6 @@ gtk_revealer_set_position (GtkRevealer *revealer,
g_object_notify_by_pspec (G_OBJECT (revealer), props[PROP_CHILD_REVEALED]);
}
/* From clutter-easing.c, based on Robert Penner's
* infamous easing equations, MIT license.
*/
static double
ease_out_cubic (double t)
{
double p = t - 1;
return p * p * p + 1;
}
static void
gtk_revealer_animate_step (GtkRevealer *revealer,
gint64 now)
{
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
gdouble t;
if (now < priv->end_time)
t = (now - priv->start_time) / (gdouble) (priv->end_time - priv->start_time);
else
t = 1.0;
t = ease_out_cubic (t);
gtk_revealer_set_position (revealer,
priv->source_pos + (t * (priv->target_pos - priv->source_pos)));
}
static gboolean
gtk_revealer_animate_cb (GtkWidget *widget,
GdkFrameClock *frame_clock,
@ -602,11 +575,15 @@ gtk_revealer_animate_cb (GtkWidget *widget,
{
GtkRevealer *revealer = GTK_REVEALER (widget);
GtkRevealerPrivate *priv = gtk_revealer_get_instance_private (revealer);
gint64 now;
gdouble ease;
now = gdk_frame_clock_get_frame_time (frame_clock);
gtk_revealer_animate_step (revealer, now);
if (priv->current_pos == priv->target_pos)
gtk_progress_tracker_advance_frame (&priv->tracker,
gdk_frame_clock_get_frame_time (frame_clock));
ease = gtk_progress_tracker_get_ease_out_cubic (&priv->tracker, FALSE);
gtk_revealer_set_position (revealer,
priv->source_pos + (ease * (priv->target_pos - priv->source_pos)));
if (gtk_progress_tracker_get_state (&priv->tracker) == GTK_PROGRESS_STATE_AFTER)
{
priv->tick_id = 0;
return FALSE;
@ -641,12 +618,13 @@ gtk_revealer_start_animation (GtkRevealer *revealer,
animations_enabled)
{
priv->source_pos = priv->current_pos;
priv->start_time = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
priv->end_time = priv->start_time + (priv->transition_duration * 1000);
if (priv->tick_id == 0)
priv->tick_id =
gtk_widget_add_tick_callback (widget, gtk_revealer_animate_cb, revealer, NULL);
gtk_revealer_animate_step (revealer, priv->start_time);
gtk_progress_tracker_start (&priv->tracker,
priv->transition_duration * 1000,
0,
1.0);
}
else
{