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r1107@localhost: muntyan | 2005-11-26 22:40:18 -0600

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Drag scroll
This commit is contained in:
Yevgen Muntyan 2005-11-27 10:40:39 +00:00
parent 89f8974402
commit a8cb0526c6
1 changed files with 133 additions and 37 deletions
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170
moo/mooutils/moofileview/mooiconview.c
View File

@ -69,6 +69,8 @@ struct _DndInfo {
GdkDragAction source_actions;
guint scroll_timeout;
GdkDragContext *drag_motion_context;
guint drag_motion_time;
guint drag_dest_inside : 1;
guint source_enabled : 1;
@ -3097,6 +3099,9 @@ moo_icon_view_drag_leave (G_GNUC_UNUSED GtkWidget *widget,
info = view->priv->dnd_info;
info->drag_motion_context = NULL;
info->drag_motion_time = 0;
if (!info->drag_dest_inside)
g_warning ("drag_leave: oops\n");
@ -3107,43 +3112,6 @@ moo_icon_view_drag_leave (G_GNUC_UNUSED GtkWidget *widget,
}
static void
drag_scroll_check (G_GNUC_UNUSED MooIconView *view,
G_GNUC_UNUSED int x,
G_GNUC_UNUSED int y)
{
g_print ("drag_scroll_check\n");
}
static gboolean
moo_icon_view_drag_motion (GtkWidget *widget,
G_GNUC_UNUSED GdkDragContext *context,
int x,
int y,
G_GNUC_UNUSED guint time)
{
DndInfo *info;
MooIconView *view = MOO_ICON_VIEW (widget);
info = view->priv->dnd_info;
if (!info->drag_dest_inside)
{
info->drag_dest_inside = TRUE;
g_print ("drag-enter\n");
}
else
{
drag_scroll_check (view, x, y);
}
g_print ("drag-motion\n");
return FALSE;
}
static void
drag_scroll_stop (MooIconView *view)
{
@ -3158,6 +3126,134 @@ drag_scroll_stop (MooIconView *view)
}
#define DRAG_SCROLL_MARGIN 0.1
#define DRAG_SCROLL_TIMEOUT 100
static gboolean
drag_scroll_timeout (MooIconView *view)
{
GtkWidget *widget = GTK_WIDGET (view);
GtkAllocation *alc = &widget->allocation;
GtkWidget *toplevel;
int x, y, new_offset;
GdkModifierType mask;
GdkEvent *event;
DndInfo *info = view->priv->dnd_info;
gdk_window_get_pointer (widget->window, &x, &y, &mask);
if (x < 0 || x >= alc->width || y < 0 || y >= alc->height)
goto out;
/* TODO make scrolling speed depend on mouse position */
if (x < widget->allocation.width * DRAG_SCROLL_MARGIN)
{
new_offset = view->priv->xoffset - 15;
}
else if (x > widget->allocation.width * (1 - DRAG_SCROLL_MARGIN))
{
new_offset = view->priv->xoffset + 15;
}
else
{
goto out;
}
new_offset = clamp_offset (view, new_offset);
if (new_offset == view->priv->xoffset)
goto out;
moo_icon_view_scroll_to (view, new_offset);
toplevel = gtk_widget_get_toplevel (widget);
if (!GTK_WIDGET_TOPLEVEL (toplevel))
{
g_critical ("%s: oops", G_STRLOC);
goto out;
}
event = gdk_event_new (GDK_DRAG_MOTION);
event->dnd.window = g_object_ref (toplevel->window);
event->dnd.send_event = TRUE;
event->dnd.context = g_object_ref (info->drag_motion_context);
event->dnd.time = info->drag_motion_time;
gdk_window_get_position (toplevel->window, &x, &y);
event->dnd.x_root = x;
event->dnd.y_root = y;
gdk_window_get_pointer (toplevel->window, &x, &y, &mask);
event->dnd.x_root += x;
event->dnd.y_root += y;
gtk_main_do_event (event);
gdk_event_free (event);
return TRUE;
out:
drag_scroll_stop (view);
return FALSE;
}
static void
drag_scroll_check (MooIconView *view,
int x,
int y)
{
GtkAllocation *alc = &GTK_WIDGET(view)->allocation;
if (x >= 0 && x < alc->width && y >= 0 && y < alc->height &&
(x < alc->width * DRAG_SCROLL_MARGIN ||
x > alc->width * (1 - DRAG_SCROLL_MARGIN)))
{
DndInfo *info = view->priv->dnd_info;
if (!info->scroll_timeout)
info->scroll_timeout =
g_timeout_add (DRAG_SCROLL_TIMEOUT,
(GSourceFunc) drag_scroll_timeout,
view);
}
else
{
drag_scroll_stop (view);
}
}
static gboolean
moo_icon_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
int x,
int y,
guint time)
{
DndInfo *info;
MooIconView *view = MOO_ICON_VIEW (widget);
info = view->priv->dnd_info;
info->drag_motion_context = context;
info->drag_motion_time = time;
if (!info->drag_dest_inside)
{
info->drag_dest_inside = TRUE;
g_print ("drag-enter\n");
}
else
{
drag_scroll_check (view, x, y);
}
return FALSE;
}
void
moo_icon_view_set_drag_dest_row (MooIconView *view,
GtkTreePath *path)