/**
* gdk_drag_context_get_device:
* @context: a #GdkDragContext
*
* Returns the #GdkDevice associated to the drag context.
*
* Returns: (transfer none): The #GdkDevice associated to @context.
**/
GdkDevice *
gdk_drag_context_get_device (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
return context->device;
}
/**
* gdk_drag_get_selection:
* @context: a #GdkDragContext.
*
* Returns the selection atom for the current source window.
*
* Returns: (transfer none): the selection atom, or %GDK_NONE
*/
GdkAtom
gdk_drag_get_selection (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE);
return GDK_DRAG_CONTEXT_GET_CLASS (context)->get_selection (context);
}
static gboolean
gstyle_color_widget_on_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
GdkAtom target;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
target = gtk_drag_dest_find_target (widget, context, NULL);
if ((target == gdk_atom_intern_static_string ("GSTYLE_COLOR_WIDGET") ||
target == gdk_atom_intern_static_string ("application/x-color") ||
gtk_targets_include_text (&target, 1)) &&
is_in_drop_zone (self, x, y))
{
gtk_drag_get_data (widget, context, target, time);
return TRUE;
}
return FALSE;
}
/**
* gdk_drag_context_list_targets:
* @context: a #GdkDragContext
*
* Retrieves the list of targets of the context.
*
* Return value: (transfer none) (element-type GdkAtom): a #GList of targets
*
* Since: 2.22
**/
GList *
gdk_drag_context_list_targets (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
return context->targets;
}
/**
* gdk_drag_drop_succeeded:
* @context: a #GdkDragContext
*
* Returns whether the dropped data has been successfully
* transferred. This function is intended to be used while
* handling a %GDK_DROP_FINISHED event, its return value is
* meaningless at other times.
*
* Return value: %TRUE if the drop was successful.
*
* Since: 2.6
**/
gboolean
gdk_drag_drop_succeeded (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), FALSE);
return GDK_DRAG_CONTEXT_GET_CLASS (context)->drop_status (context);
}
/**
* gdk_drag_context_get_dest_window:
* @context: a #GdkDragContext
*
* Returns the destination windw for the DND operation.
*
* Return value: (transfer none): a #GdkWindow
*
* Since: 3.0
**/
GdkWindow *
gdk_drag_context_get_dest_window (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
return context->dest_window;
}
/**
* gdk_drag_context_get_protocol:
* @context: a #GdkDragContext
*
* Returns the drag protocol thats used by this context.
*
* Returns: the drag protocol
*
* Since: 3.0
*/
GdkDragProtocol
gdk_drag_context_get_protocol (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_DRAG_PROTO_NONE);
return context->protocol;
}
/**
* gdk_drag_context_get_actions:
* @context: a #GdkDragContext
*
* Determines the bitmask of actions proposed by the source if
* gdk_drag_context_get_suggested_action() returns GDK_ACTION_ASK.
*
* Return value: the #GdkDragAction flags
*
* Since: 2.22
**/
GdkDragAction
gdk_drag_context_get_actions (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_ACTION_DEFAULT);
return context->actions;
}
/**
* gdk_drag_context_get_suggested_action:
* @context: a #GdkDragContext
*
* Determines the suggested drag action of the context.
*
* Return value: a #GdkDragAction value
*
* Since: 2.22
**/
GdkDragAction
gdk_drag_context_get_suggested_action (GdkDragContext *context)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), 0);
return context->suggested_action;
}
/**
* gdk_drag_drop:
* @context: a #GdkDragContext
* @time_: the timestamp for this operation
*
* Drops on the current destination.
*
* This function is called by the drag source.
*/
void
gdk_drag_drop (GdkDragContext *context,
guint32 time_)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
GDK_DRAG_CONTEXT_GET_CLASS (context)->drag_drop (context, time_);
}
/**
* gdk_drop_finish:
* @context: a #GdkDragContext
* @success: %TRUE if the data was successfully received
* @time_: the timestamp for this operation
*
* Ends the drag operation after a drop.
*
* This function is called by the drag destination.
*/
void
gdk_drop_finish (GdkDragContext *context,
gboolean success,
guint32 time_)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
GDK_DRAG_CONTEXT_GET_CLASS (context)->drop_finish (context, success, time_);
}
/**
* gdk_drag_status:
* @context: a #GdkDragContext
* @action: the selected action which will be taken when a drop happens,
* or 0 to indicate that a drop will not be accepted
* @time_: the timestamp for this operation
*
* Selects one of the actions offered by the drag source.
*
* This function is called by the drag destination in response to
* gdk_drag_motion() called by the drag source.
*/
void
gdk_drag_status (GdkDragContext *context,
GdkDragAction action,
guint32 time_)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
GDK_DRAG_CONTEXT_GET_CLASS (context)->drag_status (context, action, time_);
}
/**
* gdk_drop_reply:
* @context: a #GdkDragContext
* @accepted: %TRUE if the drop is accepted
* @time_: the timestamp for this operation
*
* Accepts or rejects a drop.
*
* This function is called by the drag destination in response
* to a drop initiated by the drag source.
*/
void
gdk_drop_reply (GdkDragContext *context,
gboolean accepted,
guint32 time_)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
GDK_DRAG_CONTEXT_GET_CLASS (context)->drop_reply (context, accepted, time_);
}
static gboolean
gstyle_color_widget_on_drag_failed (GtkWidget *widget,
GdkDragContext *context,
GtkDragResult result)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
return FALSE;
}
static void
gstyle_color_widget_on_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
gtk_drag_unhighlight (widget);
}
static void
gstyle_color_widget_on_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
gtk_widget_destroy (self->dnd_window);
self->dnd_window = NULL;
self->dnd_color_widget = NULL;
self->is_on_drag = FALSE;
}
static void
gstyle_color_widget_on_drag_data_delete (GtkWidget *widget,
GdkDragContext *context)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
GActionGroup *group;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
group = gtk_widget_get_action_group (GTK_WIDGET (self), "gstyle-color-widget-menu");
if (group != NULL)
g_action_group_activate_action (group, "remove", NULL);
}
/**
* gdk_drag_find_window_for_screen:
* @context: a #GdkDragContext
* @drag_window: a window which may be at the pointer position, but
* should be ignored, since it is put up by the drag source as an icon
* @screen: the screen where the destination window is sought
* @x_root: the x position of the pointer in root coordinates
* @y_root: the y position of the pointer in root coordinates
* @dest_window: (out): location to store the destination window in
* @protocol: (out): location to store the DND protocol in
*
* Finds the destination window and DND protocol to use at the
* given pointer position.
*
* This function is called by the drag source to obtain the
* @dest_window and @protocol parameters for gdk_drag_motion().
*
* Since: 2.2
*/
void
gdk_drag_find_window_for_screen (GdkDragContext *context,
GdkWindow *drag_window,
GdkScreen *screen,
gint x_root,
gint y_root,
GdkWindow **dest_window,
GdkDragProtocol *protocol)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
*dest_window = GDK_DRAG_CONTEXT_GET_CLASS (context)
->find_window (context, drag_window, screen, x_root, y_root, protocol);
}
/**
* gdk_drag_context_set_device:
* @context: a #GdkDragContext
* @device: a #GdkDevice
*
* Associates a #GdkDevice to @context, so all Drag and Drop events
* for @context are emitted as if they came from this device.
*/
void
gdk_drag_context_set_device (GdkDragContext *context,
GdkDevice *device)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
g_return_if_fail (GDK_IS_DEVICE (device));
if (context->device)
g_object_unref (context->device);
context->device = device;
if (context->device)
g_object_ref (context->device);
}
static void
gstyle_color_widget_on_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint info,
guint time)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
GdkAtom target = gtk_selection_data_get_target (data);
GstyleColor *color;
guint16 data_rgba[4];
GdkRGBA rgba;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
if (self->filter_func != NULL && GSTYLE_IS_COLOR (self->filtered_color))
color = self->filtered_color;
else
color = self->color;
if (target == gdk_atom_intern_static_string ("GSTYLE_COLOR_WIDGET"))
gtk_selection_data_set (data, target, 8, (void*)&color, sizeof (gpointer));
else if (target == gdk_atom_intern_static_string ("application/x-color"))
{
gstyle_color_fill_rgba (color, &rgba);
data_rgba[0] = (guint16) (rgba.red * 65535);
data_rgba[1] = (guint16) (rgba.green * 65535);
data_rgba[2] = (guint16) (rgba.blue * 65535);
data_rgba[3] = (guint16) (rgba.alpha * 65535);
gtk_selection_data_set (data, target, 16, (void*)&data_rgba, 8);
}
else if (gtk_targets_include_text (&target, 1))
{
g_autofree gchar *name = NULL;
name = gstyle_color_to_string (color, GSTYLE_COLOR_KIND_ORIGINAL);
if (name == NULL)
name = gstyle_color_to_string (color, GSTYLE_COLOR_KIND_RGB_HEX6);
gtk_selection_data_set_text (data, name, -1);
}
}
/**
* gtk_drag_dest_find_target: (method)
* @widget: drag destination widget
* @context: drag context
* @target_list: (allow-none): list of droppable targets, or %NULL to use
* gtk_drag_dest_get_target_list (@widget).
*
* Looks for a match between the supported targets of @context and the
* @dest_target_list, returning the first matching target, otherwise
* returning %GDK_NONE. @dest_target_list should usually be the return
* value from gtk_drag_dest_get_target_list(), but some widgets may
* have different valid targets for different parts of the widget; in
* that case, they will have to implement a drag_motion handler that
* passes the correct target list to this function.
*
* Returns: (transfer none): first target that the source offers
* and the dest can accept, or %GDK_NONE
*/
GdkAtom
gtk_drag_dest_find_target (GtkWidget *widget,
GdkDragContext *context,
GtkTargetList *target_list)
{
GList *tmp_target;
GList *tmp_source = NULL;
GtkWidget *source_widget;
g_return_val_if_fail (GTK_IS_WIDGET (widget), GDK_NONE);
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE);
source_widget = gtk_drag_get_source_widget (context);
if (target_list == NULL)
target_list = gtk_drag_dest_get_target_list (widget);
if (target_list == NULL)
return GDK_NONE;
tmp_target = target_list->list;
while (tmp_target)
{
GtkTargetPair *pair = tmp_target->data;
tmp_source = gdk_drag_context_list_targets (context);
while (tmp_source)
{
if (tmp_source->data == GUINT_TO_POINTER (pair->target))
{
if ((!(pair->flags & GTK_TARGET_SAME_APP) || source_widget) &&
(!(pair->flags & GTK_TARGET_SAME_WIDGET) || (source_widget == widget)) &&
(!(pair->flags & GTK_TARGET_OTHER_APP) || !source_widget) &&
(!(pair->flags & GTK_TARGET_OTHER_WIDGET) || (source_widget != widget)))
return pair->target;
else
break;
}
tmp_source = tmp_source->next;
}
tmp_target = tmp_target->next;
}
return GDK_NONE;
}
static gboolean
gstyle_color_widget_on_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GstyleColorWidget *self = (GstyleColorWidget *)widget;
GstylePaletteWidgetDndLockFlags dnd_lock;
GdkAtom target;
GdkDragAction drag_action;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
target = gtk_drag_dest_find_target (widget, context, NULL);
dnd_lock = get_palette_widget_dnd_lock (self);
if ((dnd_lock & GSTYLE_PALETTE_WIDGET_DND_LOCK_FLAGS_DRAG) != 0)
{
gdk_drag_status (context, 0, time);
return FALSE;
}
if ((target == gdk_atom_intern_static_string ("GSTYLE_COLOR_WIDGET") ||
target == gdk_atom_intern_static_string ("application/x-color") ||
gtk_targets_include_text (&target, 1)) &&
(dnd_lock & GSTYLE_PALETTE_WIDGET_DND_LOCK_FLAGS_DROP) == 0 &&
is_in_drop_zone (self, x, y))
{
gtk_drag_highlight (widget);
drag_action = gdk_drag_context_get_actions (context);
if ((drag_action | GDK_ACTION_COPY) != 0)
{
gdk_drag_status (context, GDK_ACTION_COPY, time);
return TRUE;
}
}
gdk_drag_status (context, 0, time);
return FALSE;
}
/**
* gdk_drag_motion:
* @context: a #GdkDragContext
* @dest_window: the new destination window, obtained by
* gdk_drag_find_window()
* @protocol: the DND protocol in use, obtained by gdk_drag_find_window()
* @x_root: the x position of the pointer in root coordinates
* @y_root: the y position of the pointer in root coordinates
* @suggested_action: the suggested action
* @possible_actions: the possible actions
* @time_: the timestamp for this operation
*
* Updates the drag context when the pointer moves or the
* set of actions changes.
*
* This function is called by the drag source.
*
* Returns:
*/
gboolean
gdk_drag_motion (GdkDragContext *context,
GdkWindow *dest_window,
GdkDragProtocol protocol,
gint x_root,
gint y_root,
GdkDragAction suggested_action,
GdkDragAction possible_actions,
guint32 time_)
{
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), FALSE);
return GDK_DRAG_CONTEXT_GET_CLASS (context)
->drag_motion (context,
dest_window,
protocol,
x_root,
y_root,
suggested_action,
possible_actions,
time_);
}
static void
gstyle_color_widget_on_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *data,
guint info,
guint time)
{
GstyleColorWidget *self = GSTYLE_COLOR_WIDGET (widget);
GstyleColor * const *src_color;
g_autofree gchar *color_string = NULL;
GstyleColorKind kind;
GdkAtom target;
guint16 *data_rgba;
GdkRGBA rgba;
gint len;
g_assert (GSTYLE_IS_COLOR_WIDGET (self));
g_assert (GDK_IS_DRAG_CONTEXT (context));
target = gtk_selection_data_get_target (data);
if (target == gdk_atom_intern_static_string ("GSTYLE_COLOR_WIDGET"))
{
/* TODO: check if the color widget is coming from a PaletteWidget container */
src_color = (void*)gtk_selection_data_get_data (data);
if (*src_color != self->color)
dnd_color_fill (self, *src_color, self->color);
gtk_drag_finish (context, TRUE, FALSE, time);
return;
}
else if (target == gdk_atom_intern_static_string ("application/x-color"))
{
len = gtk_selection_data_get_length (data);
if (len < 0 )
goto failed;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
data_rgba = (guint16 *)gtk_selection_data_get_data (data);
#pragma GCC diagnostic pop
rgba.red = data_rgba[0] / 65535.;
rgba.green = data_rgba[1] / 65535.;
rgba.blue = data_rgba[2] / 65535.;
rgba.alpha = data_rgba[3] / 65535.;
gstyle_color_set_rgba (self->color, &rgba);
gtk_drag_finish (context, TRUE, FALSE, time);
return;
}
else if (gtk_targets_include_text (&target, 1))
{
color_string = (gchar *)gtk_selection_data_get_text (data);
if (!gstyle_str_empty0 (color_string))
{
if (!gstyle_color_parse_color_string (color_string, &rgba, &kind))
goto failed;
gstyle_color_set_rgba (self->color, &rgba);
gtk_drag_finish (context, TRUE, FALSE, time);
}
}
failed:
gtk_drag_finish (context, FALSE, FALSE, time);
}