+++ /dev/null
-/* GTK - The GIMP Toolkit
- * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <gtk/gtktimeline.h>
-#include <gtk/gtktypebuiltins.h>
-#include <gtk/gtksettings.h>
-#include <math.h>
-
-#define MSECS_PER_SEC 1000
-#define FRAME_INTERVAL(nframes) (MSECS_PER_SEC / nframes)
-#define DEFAULT_FPS 30
-
-typedef struct GtkTimelinePriv GtkTimelinePriv;
-
-struct GtkTimelinePriv
-{
- guint duration;
- guint fps;
- guint source_id;
-
- GTimer *timer;
- gdouble elapsed_time;
-
- gdouble progress;
- gdouble last_progress;
-
- GdkScreen *screen;
-
- GtkTimelineProgressType progress_type;
-
- guint animations_enabled : 1;
- guint loop : 1;
- guint direction : 1;
-};
-
-enum {
- PROP_0,
- PROP_FPS,
- PROP_DURATION,
- PROP_LOOP,
- PROP_DIRECTION,
- PROP_SCREEN
-};
-
-enum {
- STARTED,
- PAUSED,
- FINISHED,
- FRAME,
- LAST_SIGNAL
-};
-
-static guint signals [LAST_SIGNAL] = { 0, };
-
-
-static void gtk_timeline_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void gtk_timeline_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-static void _gtk_timeline_finalize (GObject *object);
-
-
-G_DEFINE_TYPE (GtkTimeline, _gtk_timeline, G_TYPE_OBJECT)
-
-
-static void
-_gtk_timeline_class_init (GtkTimelineClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- object_class->set_property = gtk_timeline_set_property;
- object_class->get_property = gtk_timeline_get_property;
- object_class->finalize = _gtk_timeline_finalize;
-
- g_object_class_install_property (object_class,
- PROP_FPS,
- g_param_spec_uint ("fps",
- "FPS",
- "Frames per second for the timeline",
- 1, G_MAXUINT,
- DEFAULT_FPS,
- G_PARAM_READWRITE));
- g_object_class_install_property (object_class,
- PROP_DURATION,
- g_param_spec_uint ("duration",
- "Animation Duration",
- "Animation Duration",
- 0, G_MAXUINT,
- 0,
- G_PARAM_READWRITE));
- g_object_class_install_property (object_class,
- PROP_LOOP,
- g_param_spec_boolean ("loop",
- "Loop",
- "Whether the timeline loops or not",
- FALSE,
- G_PARAM_READWRITE));
- g_object_class_install_property (object_class,
- PROP_SCREEN,
- g_param_spec_object ("screen",
- "Screen",
- "Screen to get the settings from",
- GDK_TYPE_SCREEN,
- G_PARAM_READWRITE));
-
- signals[STARTED] =
- g_signal_new ("started",
- G_TYPE_FROM_CLASS (object_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GtkTimelineClass, started),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- signals[PAUSED] =
- g_signal_new ("paused",
- G_TYPE_FROM_CLASS (object_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GtkTimelineClass, paused),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- signals[FINISHED] =
- g_signal_new ("finished",
- G_TYPE_FROM_CLASS (object_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GtkTimelineClass, finished),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- signals[FRAME] =
- g_signal_new ("frame",
- G_TYPE_FROM_CLASS (object_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (GtkTimelineClass, frame),
- NULL, NULL,
- g_cclosure_marshal_VOID__DOUBLE,
- G_TYPE_NONE, 1,
- G_TYPE_DOUBLE);
-
- g_type_class_add_private (klass, sizeof (GtkTimelinePriv));
-}
-
-static void
-_gtk_timeline_init (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- priv = timeline->priv = G_TYPE_INSTANCE_GET_PRIVATE (timeline,
- GTK_TYPE_TIMELINE,
- GtkTimelinePriv);
-
- priv->fps = DEFAULT_FPS;
- priv->duration = 0.0;
- priv->direction = GTK_TIMELINE_DIRECTION_FORWARD;
- priv->screen = gdk_screen_get_default ();
-
- priv->last_progress = 0;
-}
-
-static void
-gtk_timeline_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GtkTimeline *timeline;
-
- timeline = GTK_TIMELINE (object);
-
- switch (prop_id)
- {
- case PROP_FPS:
- _gtk_timeline_set_fps (timeline, g_value_get_uint (value));
- break;
- case PROP_DURATION:
- _gtk_timeline_set_duration (timeline, g_value_get_uint (value));
- break;
- case PROP_LOOP:
- _gtk_timeline_set_loop (timeline, g_value_get_boolean (value));
- break;
- case PROP_DIRECTION:
- _gtk_timeline_set_direction (timeline, g_value_get_enum (value));
- break;
- case PROP_SCREEN:
- _gtk_timeline_set_screen (timeline,
- GDK_SCREEN (g_value_get_object (value)));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- }
-}
-
-static void
-gtk_timeline_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GtkTimeline *timeline;
- GtkTimelinePriv *priv;
-
- timeline = GTK_TIMELINE (object);
- priv = timeline->priv;
-
- switch (prop_id)
- {
- case PROP_FPS:
- g_value_set_uint (value, priv->fps);
- break;
- case PROP_DURATION:
- g_value_set_uint (value, priv->duration);
- break;
- case PROP_LOOP:
- g_value_set_boolean (value, priv->loop);
- break;
- case PROP_DIRECTION:
- g_value_set_enum (value, priv->direction);
- break;
- case PROP_SCREEN:
- g_value_set_object (value, priv->screen);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- }
-}
-
-static void
-_gtk_timeline_finalize (GObject *object)
-{
- GtkTimelinePriv *priv;
- GtkTimeline *timeline;
-
- timeline = (GtkTimeline *) object;
- priv = timeline->priv;
-
- if (priv->source_id)
- {
- g_source_remove (priv->source_id);
- priv->source_id = 0;
- }
-
- if (priv->timer)
- g_timer_destroy (priv->timer);
-
- G_OBJECT_CLASS (_gtk_timeline_parent_class)->finalize (object);
-}
-
-static gdouble
-calculate_progress (gdouble linear_progress,
- GtkTimelineProgressType progress_type)
-{
- gdouble progress;
-
- progress = linear_progress;
-
- switch (progress_type)
- {
- case GTK_TIMELINE_PROGRESS_LINEAR:
- break;
- case GTK_TIMELINE_PROGRESS_EASE_IN_OUT:
- progress *= 2;
-
- if (progress < 1)
- progress = pow (progress, 3) / 2;
- else
- progress = (pow (progress - 2, 3) + 2) / 2;
-
- break;
- case GTK_TIMELINE_PROGRESS_EASE:
- progress = (sin ((progress - 0.5) * G_PI) + 1) / 2;
- break;
- case GTK_TIMELINE_PROGRESS_EASE_IN:
- progress = pow (progress, 3);
- break;
- case GTK_TIMELINE_PROGRESS_EASE_OUT:
- progress = pow (progress - 1, 3) + 1;
- break;
- default:
- g_warning ("Timeline progress type not implemented");
- }
-
- return progress;
-}
-
-static gboolean
-gtk_timeline_run_frame (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
- gdouble delta_progress, progress;
-
- /* the user may unref us during the signals, so save ourselves */
- g_object_ref (timeline);
-
- priv = timeline->priv;
-
- priv->elapsed_time = (guint) (g_timer_elapsed (priv->timer, NULL) * 1000);
- g_timer_start (priv->timer);
-
- if (priv->animations_enabled)
- {
- delta_progress = (gdouble) priv->elapsed_time / priv->duration;
- progress = priv->last_progress;
-
- if (priv->direction == GTK_TIMELINE_DIRECTION_BACKWARD)
- progress -= delta_progress;
- else
- progress += delta_progress;
-
- priv->last_progress = progress;
-
- progress = CLAMP (progress, 0., 1.);
- }
- else
- progress = (priv->direction == GTK_TIMELINE_DIRECTION_FORWARD) ? 1.0 : 0.0;
-
- priv->progress = progress;
- g_signal_emit (timeline, signals [FRAME], 0,
- calculate_progress (progress, priv->progress_type));
-
- if ((priv->direction == GTK_TIMELINE_DIRECTION_FORWARD && progress == 1.0) ||
- (priv->direction == GTK_TIMELINE_DIRECTION_BACKWARD && progress == 0.0))
- {
- gboolean loop;
-
- loop = priv->loop && priv->animations_enabled;
-
- if (loop)
- _gtk_timeline_rewind (timeline);
- else
- {
- if (priv->source_id)
- {
- g_source_remove (priv->source_id);
- priv->source_id = 0;
- }
- g_timer_stop (priv->timer);
- g_signal_emit (timeline, signals [FINISHED], 0);
- g_object_unref (timeline);
- return FALSE;
- }
- }
-
- g_object_unref (timeline);
-
- return TRUE;
-}
-
-/*
- * _gtk_timeline_new:
- * @duration: duration in milliseconds for the timeline
- *
- * Creates a new #GtkTimeline with the specified number of frames.
- *
- * Return Value: the newly created #GtkTimeline
- */
-GtkTimeline *
-_gtk_timeline_new (guint duration)
-{
- return g_object_new (GTK_TYPE_TIMELINE,
- "duration", duration,
- NULL);
-}
-
-GtkTimeline *
-_gtk_timeline_new_for_screen (guint duration,
- GdkScreen *screen)
-{
- return g_object_new (GTK_TYPE_TIMELINE,
- "duration", duration,
- "screen", screen,
- NULL);
-}
-
-/*
- * _gtk_timeline_start:
- * @timeline: A #GtkTimeline
- *
- * Runs the timeline from the current frame.
- */
-void
-_gtk_timeline_start (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
- GtkSettings *settings;
- gboolean enable_animations = FALSE;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
-
- if (!priv->source_id)
- {
- if (priv->timer)
- g_timer_continue (priv->timer);
- else
- priv->timer = g_timer_new ();
-
- /* sanity check */
- g_assert (priv->fps > 0);
-
- if (priv->screen)
- {
- settings = gtk_settings_get_for_screen (priv->screen);
- g_object_get (settings, "gtk-enable-animations", &enable_animations, NULL);
- }
-
- priv->animations_enabled = enable_animations;
-
- g_signal_emit (timeline, signals [STARTED], 0);
-
- if (enable_animations)
- priv->source_id = gdk_threads_add_timeout (FRAME_INTERVAL (priv->fps),
- (GSourceFunc) gtk_timeline_run_frame,
- timeline);
- else
- priv->source_id = gdk_threads_add_idle ((GSourceFunc) gtk_timeline_run_frame,
- timeline);
- }
-}
-
-/*
- * _gtk_timeline_pause:
- * @timeline: A #GtkTimeline
- *
- * Pauses the timeline.
- */
-void
-_gtk_timeline_pause (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
-
- if (priv->source_id)
- {
- g_timer_stop (priv->timer);
- g_source_remove (priv->source_id);
- priv->source_id = 0;
- g_signal_emit (timeline, signals [PAUSED], 0);
- }
-}
-
-/*
- * _gtk_timeline_rewind:
- * @timeline: A #GtkTimeline
- *
- * Rewinds the timeline.
- */
-void
-_gtk_timeline_rewind (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
-
- if (_gtk_timeline_get_direction (timeline) != GTK_TIMELINE_DIRECTION_FORWARD)
- priv->progress = priv->last_progress = 1.;
- else
- priv->progress = priv->last_progress = 0.;
-
- /* reset timer */
- if (priv->timer)
- {
- g_timer_start (priv->timer);
-
- if (!priv->source_id)
- g_timer_stop (priv->timer);
- }
-}
-
-/*
- * _gtk_timeline_is_running:
- * @timeline: A #GtkTimeline
- *
- * Returns whether the timeline is running or not.
- *
- * Return Value: %TRUE if the timeline is running
- */
-gboolean
-_gtk_timeline_is_running (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), FALSE);
-
- priv = timeline->priv;
-
- return (priv->source_id != 0);
-}
-
-/*
- * _gtk_timeline_get_elapsed_time:
- * @timeline: A #GtkTimeline
- *
- * Returns the elapsed time since the last GtkTimeline::frame signal
- *
- * Return Value: elapsed time in milliseconds since the last frame
- */
-guint
-_gtk_timeline_get_elapsed_time (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), 0);
-
- priv = timeline->priv;
- return priv->elapsed_time;
-}
-
-/*
- * _gtk_timeline_get_fps:
- * @timeline: A #GtkTimeline
- *
- * Returns the number of frames per second.
- *
- * Return Value: frames per second
- */
-guint
-_gtk_timeline_get_fps (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), 1);
-
- priv = timeline->priv;
- return priv->fps;
-}
-
-/*
- * _gtk_timeline_set_fps:
- * @timeline: A #GtkTimeline
- * @fps: frames per second
- *
- * Sets the number of frames per second that
- * the timeline will play.
- */
-void
-_gtk_timeline_set_fps (GtkTimeline *timeline,
- guint fps)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
- g_return_if_fail (fps > 0);
-
- priv = timeline->priv;
-
- priv->fps = fps;
-
- if (_gtk_timeline_is_running (timeline))
- {
- g_source_remove (priv->source_id);
- priv->source_id = gdk_threads_add_timeout (FRAME_INTERVAL (priv->fps),
- (GSourceFunc) gtk_timeline_run_frame,
- timeline);
- }
-
- g_object_notify (G_OBJECT (timeline), "fps");
-}
-
-/*
- * _gtk_timeline_get_loop:
- * @timeline: A #GtkTimeline
- *
- * Returns whether the timeline loops to the
- * beginning when it has reached the end.
- *
- * Return Value: %TRUE if the timeline loops
- */
-gboolean
-_gtk_timeline_get_loop (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), FALSE);
-
- priv = timeline->priv;
- return priv->loop;
-}
-
-/*
- * _gtk_timeline_set_loop:
- * @timeline: A #GtkTimeline
- * @loop: %TRUE to make the timeline loop
- *
- * Sets whether the timeline loops to the beginning
- * when it has reached the end.
- */
-void
-_gtk_timeline_set_loop (GtkTimeline *timeline,
- gboolean loop)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
-
- if (loop != priv->loop)
- {
- priv->loop = loop;
- g_object_notify (G_OBJECT (timeline), "loop");
- }
-}
-
-void
-_gtk_timeline_set_duration (GtkTimeline *timeline,
- guint duration)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
-
- if (duration != priv->duration)
- {
- priv->duration = duration;
- g_object_notify (G_OBJECT (timeline), "duration");
- }
-}
-
-guint
-_gtk_timeline_get_duration (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), 0);
-
- priv = timeline->priv;
-
- return priv->duration;
-}
-
-/*
- * _gtk_timeline_set_direction:
- * @timeline: A #GtkTimeline
- * @direction: direction
- *
- * Sets the direction of the timeline.
- */
-void
-_gtk_timeline_set_direction (GtkTimeline *timeline,
- GtkTimelineDirection direction)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
- priv->direction = direction;
-}
-
-/*
- * _gtk_timeline_get_direction:
- * @timeline: A #GtkTimeline
- *
- * Returns the direction of the timeline.
- *
- * Return Value: direction
- */
-GtkTimelineDirection
-_gtk_timeline_get_direction (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), GTK_TIMELINE_DIRECTION_FORWARD);
-
- priv = timeline->priv;
- return priv->direction;
-}
-
-void
-_gtk_timeline_set_screen (GtkTimeline *timeline,
- GdkScreen *screen)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
- g_return_if_fail (GDK_IS_SCREEN (screen));
-
- priv = timeline->priv;
-
- if (priv->screen)
- g_object_unref (priv->screen);
-
- priv->screen = g_object_ref (screen);
-
- g_object_notify (G_OBJECT (timeline), "screen");
-}
-
-GdkScreen *
-_gtk_timeline_get_screen (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), NULL);
-
- priv = timeline->priv;
- return priv->screen;
-}
-
-gdouble
-_gtk_timeline_get_progress (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), 0.);
-
- priv = timeline->priv;
- return calculate_progress (priv->progress, priv->progress_type);
-}
-
-GtkTimelineProgressType
-_gtk_timeline_get_progress_type (GtkTimeline *timeline)
-{
- GtkTimelinePriv *priv;
-
- g_return_val_if_fail (GTK_IS_TIMELINE (timeline), GTK_TIMELINE_PROGRESS_LINEAR);
-
- priv = timeline->priv;
- return priv->progress_type;
-}
-
-void
-_gtk_timeline_set_progress_type (GtkTimeline *timeline,
- GtkTimelineProgressType progress_type)
-{
- GtkTimelinePriv *priv;
-
- g_return_if_fail (GTK_IS_TIMELINE (timeline));
-
- priv = timeline->priv;
- priv->progress_type = progress_type;
-}
projects / ~andy / gtk / blobdiff