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Document DND signals.

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This commit is contained in:
Matthias Clasen 2003-07-25 23:34:37 +00:00
parent b15ba50885
commit 98e5b6e608
6 changed files with 178 additions and 11 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2003-07-26 Matthias Clasen <maclas@gmx.de>
* gtk/gtkwidget.c: Document DND signals.
2003-07-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (popup_targets_received): Make the "Input Methods" insensitive

4
ChangeLog.pre-2-10
View File

@ -1,3 +1,7 @@
2003-07-26 Matthias Clasen <maclas@gmx.de>
* gtk/gtkwidget.c: Document DND signals.
2003-07-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (popup_targets_received): Make the "Input Methods" insensitive

4
ChangeLog.pre-2-4
View File

@ -1,3 +1,7 @@
2003-07-26 Matthias Clasen <maclas@gmx.de>
* gtk/gtkwidget.c: Document DND signals.
2003-07-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (popup_targets_received): Make the "Input Methods" insensitive

4
ChangeLog.pre-2-6
View File

@ -1,3 +1,7 @@
2003-07-26 Matthias Clasen <maclas@gmx.de>
* gtk/gtkwidget.c: Document DND signals.
2003-07-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (popup_targets_received): Make the "Input Methods" insensitive

4
ChangeLog.pre-2-8
View File

@ -1,3 +1,7 @@
2003-07-26 Matthias Clasen <maclas@gmx.de>
* gtk/gtkwidget.c: Document DND signals.
2003-07-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (popup_targets_received): Make the "Input Methods" insensitive

169
gtk/gtkwidget.c
View File

@ -922,6 +922,17 @@ gtk_widget_class_init (GtkWidgetClass *klass)
_gtk_marshal_BOOLEAN__BOXED,
G_TYPE_BOOLEAN, 1,
GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
/**
* GtkWidget::drag-leave:
* @widget: the object which received the signal.
* @drag_context: the drag context
* @time: the timestamp of the motion event
*
* The ::drag-leave signal is emitted on the drop site when the cursor leaves the widget.
* A typical reason to connect to this signal is to undo things done in ::drag-motion, e.g.
* undo highlighting with gtk_drag_unhighlight()
*/
widget_signals[DRAG_LEAVE] =
g_signal_new ("drag_leave",
G_TYPE_FROM_CLASS (gobject_class),
@ -932,6 +943,16 @@ gtk_widget_class_init (GtkWidgetClass *klass)
G_TYPE_NONE, 2,
GDK_TYPE_DRAG_CONTEXT,
G_TYPE_UINT);
/**
* GtkWidget::drag-begin:
* @widget: the object which received the signal.
* @drag_context: the drag context
*
* The ::drag-begin signal is emitted on the drag source when a drag is started.
* A typical reason to connect to this signal is to set up a custom drag icon with
* gtk_drag_source_set_icon().
*/
widget_signals[DRAG_BEGIN] =
g_signal_new ("drag_begin",
G_TYPE_FROM_CLASS (gobject_class),
@ -941,6 +962,15 @@ gtk_widget_class_init (GtkWidgetClass *klass)
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
/**
* GtkWidget::drag-end:
* @widget: the object which received the signal.
* @drag_context: the drag context
*
* The ::drag-end signal is emitted on the drag source when a drag is finished.
* A typical reason to connect to this signal is to undo things done in ::drag-begin.
*/
widget_signals[DRAG_END] =
g_signal_new ("drag_end",
G_TYPE_FROM_CLASS (gobject_class),
@ -950,6 +980,17 @@ gtk_widget_class_init (GtkWidgetClass *klass)
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
/**
* GtkWidget::drag-data-delete:
* @widget: the object which received the signal.
* @drag_context: the drag context
*
* The ::drag-data-delete signal is emitted on the drag source when a drag with the action
* %GDK_ACTION_MOVE is successfully completed. The signal handler is responsible for deleting
* the data that has been dropped. What "delete" means, depends on the context of the drag
* operation.
*/
widget_signals[DRAG_DATA_DELETE] =
g_signal_new ("drag_data_delete",
G_TYPE_FROM_CLASS (gobject_class),
@ -959,6 +1000,87 @@ gtk_widget_class_init (GtkWidgetClass *klass)
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GDK_TYPE_DRAG_CONTEXT);
/**
* GtkWidget::drag-motion:
* @widget: the object which received the signal.
* @drag_context: the drag context
* @x: the x coordinate of the current cursor position
* @y: the y coordinate of the current cursor position
* @time: the timestamp of the motion event
*
* The ::drag-motion signal is emitted on the drop site when the user moves the cursor over
* the widget during a drag. The signal handler must determine whether the drop will be
* accepted and call gdk_drag_status() accordingly. If this decision can't be made based solely on
* the cursor position and the type of the data, the handler may inspect the dragged data by
* calling gtk_drag_get_data() and defer the gdk_drag_status() call to the ::drag-data-received
* handler. If the drop will be accepted, the handler will typically highlight the drop site
* with gtk_drag_highlight().
*
* Note that there is no ::drag-enter signal. The drag receiver has to keep track of whether
* he has received any ::drag-motion signals since the last ::drag-leave and if not, treat the
* ::drag-motion signal as an "enter" signal.
*
* <informalexample><programlisting>
* static void
* drag_motion (GtkWidget *widget,
* GdkDragContext *context,
* gint x,
* gint y,
* guint time)
* {
* GdkAtom target;
*
* PrivateData *private_data = GET_PRIVATE_DATA (widget);
*
* if (!private_data->drag_highlight)
* {
* private_data->drag_highlight = 1;
* gtk_drag_highlight (widget);
* }
*
* target = gtk_drag_dest_find_target (widget, context, NULL);
* if (target == GDK_NONE)
* gdk_drag_status (context, 0, time);
* else
* {
* private_data->pending_status = context->suggested_action;
* gtk_drag_get_data (widget, context, target, time);
* }
* }
*
* static void
* drag_data_received (GtkWidget *widget,
* GdkDragContext *context,
* gint x,
* gint y,
* GtkSelectionData *selection_data,
* guint info,
* guint time)
* {
* PrivateData *private_data = GET_PRIVATE_DATA (widget);
*
* if (private_data->suggested_action)
* {
* private_data->suggested_action = 0;
*
* /<!-- -->* We are getting this data due to a request in drag_motion,
* * rather than due to a request in drag_drop, so we are just
* * supposed to call gdk_drag_status(<!-- -->), not actually paste in the data.
* *<!-- -->/
* str = gtk_selection_data_get_text (selection_data);
* if (!data_is_acceptable (str))
* gdk_drag_status (context, 0, time);
* else
* gdk_drag_status (context, private_data->suggested_action, time);
* }
* else
* {
* /<!-- -->* accept the drop *<!-- -->/
* }
* }
* </programlisting></informalexample>
*/
widget_signals[DRAG_MOTION] =
g_signal_new ("drag_motion",
G_TYPE_FROM_CLASS (gobject_class),
@ -971,6 +1093,19 @@ gtk_widget_class_init (GtkWidgetClass *klass)
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_UINT);
/**
* GtkWidget::drag-drop:
* @widget: the object which received the signal.
* @drag_context: the drag context
* @x: the x coordinate of the current cursor position
* @y: the y coordinate of the current cursor position
* @time: the timestamp of the motion event
*
* The ::drag-drop signal is emitted on the drop site when the user drops the data
* onto the widget. The signal handler is expected to call gtk_drop_get_data() to
* receive the data for one or more of the supported targets.
*/
widget_signals[DRAG_DROP] =
g_signal_new ("drag_drop",
G_TYPE_FROM_CLASS (gobject_class),
@ -983,6 +1118,20 @@ gtk_widget_class_init (GtkWidgetClass *klass)
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_UINT);
/**
* GtkWidget::drag-data-get:
* @widget: the object which received the signal.
* @drag_context: the drag context
* @data: the #GtkSelectionData to be filled with the dragged data
* @info: the info that has been registered with the target in the #GtkTargetList.
* @time: the timestamp at which the data was requested
*
* The ::drag-data-get signal is emitted on the drag source when the drop site requests
* the data which is dragged. It is the responsibility of the signal handler to fill @data
* with the data in the format which is indicated by @info. See gtk_selection_data_set() and
* gtk_selection_data_set_text().
*/
widget_signals[DRAG_DATA_GET] =
g_signal_new ("drag_data_get",
G_TYPE_FROM_CLASS (gobject_class),
@ -1003,20 +1152,18 @@ gtk_widget_class_init (GtkWidgetClass *klass)
* @x: where the drop happened
* @y: where the drop happened
* @data: the received data
* @info: the info that has been registered with the target in the
* #GtkTargetList.
* @info: the info that has been registered with the target in the #GtkTargetList.
* @time: the timestamp at which the data was received
* @user_data: user data set when the signal handler was connected.
*
* The ::drag-data-received signal is emitted on the drop site when the drop
* happens and the data has been received. A handler for this signal is
* expected to process the received data and then call gtk_drag_finish(),
* setting the <literal>success</literal> parameter depending on whether the
* data was processed successfully.
* The ::drag-data-received signal is emitted on the drop site when the dragged data has been
* received. If the data was received in order to determine whether the drop will be accepted,
* the handler is expected to call gdk_drag_status() and <emphasis>not</emphasis> finish the drag.
* If the data was received in response to a ::drag-drop signal, the handler for this signal is
* expected to process the received data and then call gtk_drag_finish(), setting the
* @success parameter depending on whether the data was processed successfully.
*
* The handler may inspect and modify @drag_context->action
* before calling gtk_drag_finish(), e.g. to implement %GTK_ACTION_ASK as
* shown in the following example:
* The handler may inspect and modify @drag_context->action before calling gtk_drag_finish(),
* e.g. to implement %GDK_ACTION_ASK as shown in the following example:
* <informalexample><programlisting>
* void
* drag_data_received (GtkWidget *widget,