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Taddeüs Kroes
multitouch
Commits
9fe3fe36
Commit
9fe3fe36
authored
Jun 09, 2012
by
Taddeüs Kroes
Browse files
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Plain Diff
Code cleanup.
parent
a2f08297
Changes
1
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1 changed file
with
26 additions
and
16 deletions
+26
-16
src/widget.py
src/widget.py
+26
-16
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src/widget.py
View file @
9fe3fe36
...
...
@@ -17,8 +17,8 @@ class Widget(Positionable, Logger):
def
__init__
(
self
,
x
=
None
,
y
=
None
):
Positionable
.
__init__
(
self
,
x
,
y
)
#
Map of gesture types to gestur
e trackers
self
.
trackers
=
{}
#
List of all activ
e trackers
self
.
trackers
=
[]
# Map of gesture types to a list of handlers for that type
self
.
handlers
=
{}
...
...
@@ -109,17 +109,27 @@ class Widget(Positionable, Logger):
# Remove handler list
del
self
.
handlers
[
gesture_type
][:]
tracker
=
self
.
find_tracker
(
gesture_type
)
# Check if any other handlers need the tracker
for
gtype
in
self
.
trackers
[
gesture_type
]
.
gesture_types
:
for
gtype
in
tracker
.
gesture_types
:
if
gtype
in
self
.
handlers
:
return
# No more handlers are bound, remove unused tracker and handlers
del
self
.
trackers
[
gesture_type
]
self
.
trackers
.
remove
(
gesture_type
)
for
gtype
in
self
.
trackers
[
gesture_type
]
.
gesture_types
:
for
gtype
in
tracker
.
gesture_types
:
del
self
.
handlers
[
gtype
]
def
find_tracker
(
self
,
gesture_type
):
"""
Find a tracker that is tracking some gesture type.
"""
for
tracker
in
self
.
trackers
:
if
gesture_type
in
tracker
.
gesture_types
:
return
tracker
def
bind
(
self
,
gesture_type
,
handler
,
remove_existing
=
False
,
**
kwargs
):
"""
Bind a handler to the specified type of gesture. Create a tracker for
...
...
@@ -130,7 +140,7 @@ class Widget(Positionable, Logger):
if
gesture_type
not
in
self
.
handlers
:
tracker
=
create_tracker
(
gesture_type
,
self
)
tracker
.
configure
(
**
kwargs
)
self
.
trackers
[
gesture_type
]
=
tracker
self
.
trackers
.
append
(
tracker
)
self
.
handlers
[
gesture_type
]
=
[]
# Create empty tracker lists for all supported gestures
...
...
@@ -163,14 +173,14 @@ class Widget(Positionable, Logger):
def
delegate_event
(
self
,
event
):
"""
Delegate a triggered event to child widgets. If a child stops
propagation
Delegate a triggered event to all child widgets. If a child stops
propagation, return so that its siblings and the parent widget will not
delegate the event to their trackers.
"""
if
not
self
.
children
:
self
.
propagate_event
(
event
)
else
:
child_found
=
False
if
self
.
children
:
event
.
set_offset
(
self
.
get_offset
())
child_found
=
False
# Delegate to children in reverse order because widgets that are
# added later, should be placed over previously added siblings
...
...
@@ -180,13 +190,13 @@ class Widget(Positionable, Logger):
child
.
delegate_event
(
event
)
if
event
.
is_propagation_stopped
():
break
return
if
not
child_found
:
self
.
propagate_event
(
event
)
if
not
child_found
:
self
.
propagate_event
(
event
)
def
propagate_event
(
self
,
event
):
for
tracker
in
se
t
(
self
.
trackers
.
itervalues
())
:
for
tracker
in
se
lf
.
trackers
:
tracker
.
handle_event
(
event
)
if
event
.
is_immediate_propagation_stopped
():
...
...
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