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event-controler: Add UI feedback for long-press

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style and colors of the progress feedback are subject to change

Signed-off-by: Carlos Garnacho <carlos@lanedo.com>
Acked-by: Simon Schampijer <simon@laptop.org>
This commit is contained in:
Carlos Garnacho 2012-09-05 13:56:07 +02:00 committed by Simon Schampijer
parent 63ff76b95f
commit a2b77a2166
1 changed files with 159 additions and 0 deletions
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159
src/sugar3/event-controller/sugar-long-press-controller.c
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@ -23,6 +23,8 @@
#define DEFAULT_THRESHOLD 32
#define DEFAULT_TIMEOUT 800
#define ANIM_WINDOW_WIDTH 100
#define ARC_LINE_WIDTH 10
typedef struct _SugarLongPressControllerPriv SugarLongPressControllerPriv;
@ -36,8 +38,13 @@ struct _SugarLongPressControllerPriv
{
GdkDevice *device;
GdkEventSequence *sequence;
GtkWidget *anim_window;
gint64 start_time;
gint x;
gint y;
gint root_x;
gint root_y;
guint anim_id;
guint timeout_id;
guint threshold;
guint timeout;
@ -60,6 +67,7 @@ sugar_long_press_controller_init (SugarLongPressController *controller)
priv->threshold = DEFAULT_THRESHOLD;
priv->timeout = DEFAULT_TIMEOUT;
priv->x = priv->y = -1;
priv->root_x = priv->root_y = -1;
}
static void
@ -75,6 +83,7 @@ _sugar_long_press_controller_unset_device (SugarLongPressController *controller)
priv->sequence = NULL;
priv->x = priv->y = -1;
priv->root_x = priv->root_y = -1;
priv->cancelled = priv->triggered = FALSE;
}
@ -83,6 +92,16 @@ _sugar_long_press_controller_cancel (SugarLongPressController *controller)
{
SugarLongPressControllerPriv *priv = controller->_priv;
if (priv->anim_id)
{
g_source_remove (priv->anim_id);
priv->anim_id = 0;
}
if (priv->anim_window &&
gtk_widget_get_visible (priv->anim_window))
gtk_widget_hide (priv->anim_window);
if (priv->timeout_id)
{
g_source_remove (priv->timeout_id);
@ -151,6 +170,139 @@ sugar_long_press_controller_finalize (GObject *object)
G_OBJECT_CLASS (sugar_long_press_controller_parent_class)->finalize (object);
}
static void
_stroke_progress_notification (cairo_t *cr,
gdouble progress)
{
cairo_set_line_width (cr, ARC_LINE_WIDTH);
cairo_arc (cr,
ANIM_WINDOW_WIDTH / 2,
ANIM_WINDOW_WIDTH / 2,
ANIM_WINDOW_WIDTH / 2 - ARC_LINE_WIDTH / 2,
- G_PI_2, (2 * G_PI * progress) - G_PI_2);
cairo_stroke (cr);
}
static gboolean
_sugar_long_press_anim_draw (GtkWidget *widget,
cairo_t *cr,
SugarLongPressController *controller)
{
SugarLongPressControllerPriv *priv = controller->_priv;
gdouble progress;
gint64 diff_msec;
diff_msec = (g_get_monotonic_time () - priv->start_time) / 1000;
progress = (gdouble) diff_msec / priv->timeout;
cairo_save (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_paint (cr);
cairo_restore (cr);
_stroke_progress_notification (cr, progress);
return TRUE;
}
static void
_sugar_long_press_controller_update_shape (GtkWidget *widget,
SugarLongPressController *controller)
{
cairo_surface_t *surface;
cairo_region_t *region;
cairo_t *cr;
surface = cairo_image_surface_create (CAIRO_FORMAT_A1,
ANIM_WINDOW_WIDTH,
ANIM_WINDOW_WIDTH);
cr = cairo_create (surface);
_stroke_progress_notification (cr, 1.0);
cairo_destroy (cr);
region = gdk_cairo_region_create_from_surface (surface);
cairo_surface_destroy (surface);
gtk_widget_shape_combine_region (widget, region);
cairo_region_destroy (region);
}
static gboolean
_sugar_long_press_anim_timeout (gpointer user_data)
{
SugarLongPressController *controller = user_data;
SugarLongPressControllerPriv *priv = controller->_priv;
GtkWidget *widget;
g_object_get (controller, "widget", &widget, NULL);
if (!widget)
{
priv->anim_id = 0;
return FALSE;
}
if (priv->anim_window &&
gtk_widget_get_screen (widget) !=
gtk_widget_get_screen (priv->anim_window))
{
gtk_widget_destroy (priv->anim_window);
priv->anim_window = NULL;
}
if (!priv->anim_window)
{
GdkScreen *screen;
GdkVisual *rgba_visual;
priv->anim_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_app_paintable (priv->anim_window, TRUE);
gtk_widget_input_shape_combine_region (priv->anim_window, NULL);
gtk_window_set_type_hint (GTK_WINDOW (priv->anim_window),
GDK_WINDOW_TYPE_HINT_UTILITY);
screen = gtk_widget_get_screen (widget);
rgba_visual = gdk_screen_get_rgba_visual (screen);
gtk_window_set_screen (GTK_WINDOW (priv->anim_window), screen);
if (rgba_visual)
{
GdkRGBA bg = { 0, 0, 0, 0 };
gtk_widget_set_visual (priv->anim_window, rgba_visual);
gtk_widget_override_background_color (priv->anim_window, 0, &bg);
}
else
_sugar_long_press_controller_update_shape (priv->anim_window,
controller);
g_signal_connect (priv->anim_window, "draw",
G_CALLBACK (_sugar_long_press_anim_draw),
controller);
}
if (!gtk_widget_get_visible (priv->anim_window))
{
gtk_window_move (GTK_WINDOW (priv->anim_window),
priv->root_x - (ANIM_WINDOW_WIDTH / 2),
priv->root_y - (ANIM_WINDOW_WIDTH / 2));
gtk_window_resize (GTK_WINDOW (priv->anim_window),
ANIM_WINDOW_WIDTH, ANIM_WINDOW_WIDTH);
gtk_widget_show (priv->anim_window);
priv->anim_id =
gdk_threads_add_timeout (20, _sugar_long_press_anim_timeout,
controller);
return FALSE;
}
else
{
gtk_widget_queue_draw (priv->anim_window);
return TRUE;
}
}
static gboolean
_sugar_long_press_controller_timeout (gpointer user_data)
{
@ -232,10 +384,17 @@ sugar_long_press_controller_handle_event (SugarEventController *controller,
{
case GDK_TOUCH_BEGIN:
priv->device = g_object_ref (device);
priv->start_time = g_get_monotonic_time ();
priv->x = event->touch.x;
priv->y = event->touch.y;
priv->root_x = event->touch.x_root;
priv->root_y = event->touch.y_root;
priv->sequence = sequence;
priv->anim_id =
gdk_threads_add_timeout (100,
_sugar_long_press_anim_timeout,
controller);
priv->timeout_id =
gdk_threads_add_timeout (priv->timeout,
_sugar_long_press_controller_timeout,