Documentation

GestureZoom.connectScaleChanged

gtk gesture_zoom GestureZoom

Connect to ScaleChanged signal.

Emitted whenever the distance between both tracked sequences changes.

class GestureZoom
ulong
connectScaleChanged
(
T
)
(
T callback
,
Flag!"After" after = No.After
)
if (
isCallable!T &&
is(ReturnType!T == void)
&&
(
Parameters!T.length < 1 ||
(
ParameterStorageClassTuple!T[0] == ParameterStorageClass.none &&
is(Parameters!T[0] == double)
)
)
&&
(
Parameters!T.length < 2 ||
(
ParameterStorageClassTuple!T[1] == ParameterStorageClass.none &&
is(Parameters!T[1] : gtk.gesture_zoom.GestureZoom)
)
)
&&
Parameters!T.length < 3
)

Parameters

callback T

signal callback delegate or function to connect

void callback(double scale, gtk.gesture_zoom.GestureZoom gestureZoom)

scale Scale delta, taking the initial state as 1:1 (optional)

gestureZoom the instance the signal is connected to (optional)

after Flag!"After"

Yes.After to execute callback after default handler, No.After to execute before (default)

Return Value

Type: ulong

Signal ID

gtk gesture_zoom GestureZoom constructorsfunctions
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