sugarlabs/sugar-toolkit-gtk3
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Add scroll_to_item functions to the trays to show a button that may be hidden.

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This commit is contained in:
Benjamin Berg 2008-06-20 14:46:27 +02:00
parent b781b70107
commit bb3a3d4c63
1 changed files with 25 additions and 0 deletions
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25
src/sugar/graphics/tray.py
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@ -67,6 +67,25 @@ class _TrayViewport(gtk.Viewport):
elif direction == _NEXT_PAGE: elif direction == _NEXT_PAGE:
self._scroll_next() self._scroll_next()
def scroll_to_item(self, item):
"""This function scrolls the viewport so that item will be visible."""
assert item in self.traybar.get_children()
# Get the allocation, and make sure that it is visible
if self.orientation == gtk.ORIENTATION_HORIZONTAL:
adj = self.get_hadjustment()
start = item.allocation.x
stop = item.allocation.x + item.allocation.width
else:
adj = self.get_vadjustment()
start = item.allocation.y
stop = item.allocation.y + item.allocation.height
if start < adj.value:
adj.value = start
elif stop > adj.value + adj.page_size:
adj.value = stop - adj.page_size
def _scroll_next(self): def _scroll_next(self):
allocation = self.get_allocation() allocation = self.get_allocation()
if self.orientation == gtk.ORIENTATION_HORIZONTAL: if self.orientation == gtk.ORIENTATION_HORIZONTAL:
@ -218,6 +237,9 @@ class HTray(gtk.HBox):
def get_item_index(self, item): def get_item_index(self, item):
return self._viewport.traybar.get_item_index(item) return self._viewport.traybar.get_item_index(item)
def scroll_to_item(self, item):
self._viewport.scroll_to_item(item)
class VTray(gtk.VBox): class VTray(gtk.VBox):
def __init__(self, **kwargs): def __init__(self, **kwargs):
gobject.GObject.__init__(self, **kwargs) gobject.GObject.__init__(self, **kwargs)
@ -249,6 +271,9 @@ class VTray(gtk.VBox):
def get_item_index(self, item): def get_item_index(self, item):
return self._viewport.traybar.get_item_index(item) return self._viewport.traybar.get_item_index(item)
def scroll_to_item(self, item):
self._viewport.scroll_to_item(item)
class TrayButton(ToolButton): class TrayButton(ToolButton):
def __init__(self, **kwargs): def __init__(self, **kwargs):
ToolButton.__init__(self, **kwargs) ToolButton.__init__(self, **kwargs)