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-#
-# $Id$
-#
-# Demonstration of custom classes.
-#
-# The Tile button doesn't have built-in support for autorepeat.
-# Instead of adding -repeatdelay and -repeatinterval options,
-# and all the extra binding scripts required to deal with them,
-# we create a custom widget class for autorepeating buttons.
-#
-# Usage:
-# ttk::button .b -class Repeater [... other options ...]
-#
-# TODO:
-# Use system settings for repeat interval and initial delay.
-#
-# Notes:
-# Repeater buttons work more like scrollbar arrows than
-# Tk repeating buttons: they fire once immediately when
-# first pressed, and $State(delay) specifies the initial
-# interval before the button starts autorepeating.
-#
-
-namespace eval tile::Repeater {
- variable State
- set State(timer) {} ;# [after] id of repeat script
- set State(interval) 100 ;# interval between repetitions
- set State(delay) 300 ;# delay after initial invocation
-}
-
-### Class bindings.
-#
-
-bind Repeater <Enter> { %W state active }
-bind Repeater <Leave> { %W state !active }
-
-bind Repeater <Key-space> { tile::Repeater::Activate %W }
-bind Repeater <<Invoke>> { tile::Repeater::Activate %W }
-
-bind Repeater <ButtonPress-1> { tile::Repeater::Press %W }
-bind Repeater <ButtonRelease-1> { tile::Repeater::Release %W }
-bind Repeater <B1-Leave> { tile::Repeater::Pause %W }
-bind Repeater <B1-Enter> { tile::Repeater::Resume %W } ;# @@@ see below
-
-# @@@ Workaround for metacity-induced bug:
-bind Repeater <B1-Enter> \
- { if {"%d" ne "NotifyUngrab"} { tile::Repeater::Resume %W } }
-
-### Binding procedures.
-#
-
-## Activate -- Keyboard activation binding.
-# Simulate clicking the button, and invoke the command once.
-#
-proc tile::Repeater::Activate {w} {
- $w instate disabled { return }
- set oldState [$w state pressed]
- update idletasks; after 100
- $w state $oldState
- after idle [list $w invoke]
-}
-
-## Press -- ButtonPress-1 binding.
-# Invoke the command once and start autorepeating after
-# $State(delay) milliseconds.
-#
-proc tile::Repeater::Press {w} {
- variable State
- $w instate disabled { return }
- $w state pressed
- $w invoke
- after cancel $State(timer)
- set State(timer) [after $State(delay) [list tile::Repeater::Repeat $w]]
-}
-
-## Release -- ButtonRelease binding.
-# Stop repeating.
-#
-proc tile::Repeater::Release {w} {
- variable State
- $w state !pressed
- after cancel $State(timer)
-}
-
-## Pause -- B1-Leave binding
-# Temporarily suspend autorepeat.
-#
-proc tile::Repeater::Pause {w} {
- variable State
- $w state !pressed
- after cancel $State(timer)
-}
-
-## Resume -- B1-Enter binding
-# Resume autorepeat.
-#
-proc tile::Repeater::Resume {w} {
- variable State
- $w instate disabled { return }
- $w state pressed
- $w invoke
- after cancel $State(timer)
- set State(timer) [after $State(interval) [list tile::Repeater::Repeat $w]]
-}
-
-## Repeat -- Timer script
-# Invoke the command and reschedule another repetition
-# after $State(interval) milliseconds.
-#
-proc tile::Repeater::Repeat {w} {
- variable State
- $w instate disabled { return }
- $w invoke
- set State(timer) [after $State(interval) [list tile::Repeater::Repeat $w]]
-}
-
-#*EOF*