source: proiecte/pmake3d/make3d_original/Make3dSingleImageStanford_version0.1/third_party/vrippack-0.31/lib/linux/tk8.4/button.tcl @ 37

# button.tcl --
#
# This file defines the default bindings for Tk label, button,
# checkbutton, and radiobutton widgets and provides procedures
# that help in implementing those bindings.
#
# RCS: @(#) $Id: button.tcl,v 1.17 2002/09/04 02:05:52 hobbs Exp $
#
# Copyright (c) 1992-1994 The Regents of the University of California.
# Copyright (c) 1994-1996 Sun Microsystems, Inc.
# Copyright (c) 2002 ActiveState Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#

#-------------------------------------------------------------------------
# The code below creates the default class bindings for buttons.
#-------------------------------------------------------------------------

if {[string equal [tk windowingsystem] "classic"]
        || [string equal [tk windowingsystem] "aqua"]} {
    bind Radiobutton <Enter> {
        tk::ButtonEnter %W
    }
    bind Radiobutton <1> {
        tk::ButtonDown %W
    }
    bind Radiobutton <ButtonRelease-1> {
        tk::ButtonUp %W
    }
    bind Checkbutton <Enter> {
        tk::ButtonEnter %W
    }
    bind Checkbutton <1> {
        tk::ButtonDown %W
    }
    bind Checkbutton <ButtonRelease-1> {
        tk::ButtonUp %W
    }
}
if {[string equal "windows" $tcl_platform(platform)]} {
    bind Checkbutton <equal> {
        tk::CheckRadioInvoke %W select
    }
    bind Checkbutton <plus> {
        tk::CheckRadioInvoke %W select
    }
    bind Checkbutton <minus> {
        tk::CheckRadioInvoke %W deselect
    }
    bind Checkbutton <1> {
        tk::CheckRadioDown %W
    }
    bind Checkbutton <ButtonRelease-1> {
        tk::ButtonUp %W
    }
    bind Checkbutton <Enter> {
        tk::CheckRadioEnter %W
    }

    bind Radiobutton <1> {
        tk::CheckRadioDown %W
    }
    bind Radiobutton <ButtonRelease-1> {
        tk::ButtonUp %W
    }
    bind Radiobutton <Enter> {
        tk::CheckRadioEnter %W
    }
}
if {[string equal "x11" [tk windowingsystem]]} {
    bind Checkbutton <Return> {
        if {!$tk_strictMotif} {
            tk::CheckRadioInvoke %W
        }
    }
    bind Radiobutton <Return> {
        if {!$tk_strictMotif} {
            tk::CheckRadioInvoke %W
        }
    }
    bind Checkbutton <1> {
        tk::CheckRadioInvoke %W
    }
    bind Radiobutton <1> {
        tk::CheckRadioInvoke %W
    }
    bind Checkbutton <Enter> {
        tk::ButtonEnter %W
    }
    bind Radiobutton <Enter> {
        tk::ButtonEnter %W
    }
}

bind Button <space> {
    tk::ButtonInvoke %W
}
bind Checkbutton <space> {
    tk::CheckRadioInvoke %W
}
bind Radiobutton <space> {
    tk::CheckRadioInvoke %W
}

bind Button <FocusIn> {}
bind Button <Enter> {
    tk::ButtonEnter %W
}
bind Button <Leave> {
    tk::ButtonLeave %W
}
bind Button <1> {
    tk::ButtonDown %W
}
bind Button <ButtonRelease-1> {
    tk::ButtonUp %W
}

bind Checkbutton <FocusIn> {}
bind Checkbutton <Leave> {
    tk::ButtonLeave %W
}

bind Radiobutton <FocusIn> {}
bind Radiobutton <Leave> {
    tk::ButtonLeave %W
}

if {[string equal "windows" $tcl_platform(platform)]} {

#########################
# Windows implementation 
#########################

# ::tk::ButtonEnter --
# The procedure below is invoked when the mouse pointer enters a
# button widget.  It records the button we're in and changes the
# state of the button to active unless the button is disabled.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonEnter w {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {

        # If the mouse button is down, set the relief to sunken on entry.
        # Overwise, if there's an -overrelief value, set the relief to that.

        set Priv($w,relief) [$w cget -relief]
        if {$Priv(buttonWindow) eq $w} {
            $w configure -relief sunken -state active
            set Priv($w,prelief) sunken
        } elseif {[set over [$w cget -overrelief]] ne ""} {
            $w configure -relief $over
            set Priv($w,prelief) $over
        }
    }
    set Priv(window) $w
}

# ::tk::ButtonLeave --
# The procedure below is invoked when the mouse pointer leaves a
# button widget.  It changes the state of the button back to inactive.
# Restore any modified relief too.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonLeave w {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
        $w configure -state normal
    }

    # Restore the original button relief if it was changed by Tk.
    # That is signaled by the existence of Priv($w,prelief).

    if {[info exists Priv($w,relief)]} {
        if {[info exists Priv($w,prelief)] && \
                $Priv($w,prelief) eq [$w cget -relief]} {
            $w configure -relief $Priv($w,relief)
        }
        unset -nocomplain Priv($w,relief) Priv($w,prelief)
    }

    set Priv(window) ""
}

# ::tk::ButtonDown --
# The procedure below is invoked when the mouse button is pressed in
# a button widget.  It records the fact that the mouse is in the button,
# saves the button's relief so it can be restored later, and changes
# the relief to sunken.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonDown w {
    variable ::tk::Priv

    # Only save the button's relief if it does not yet exist.  If there
    # is an overrelief setting, Priv($w,relief) will already have been set,
    # and the current value of the -relief option will be incorrect.

    if {![info exists Priv($w,relief)]} {
        set Priv($w,relief) [$w cget -relief]
    }

    if {[$w cget -state] ne "disabled"} {
        set Priv(buttonWindow) $w
        $w configure -relief sunken -state active
        set Priv($w,prelief) sunken

        # If this button has a repeatdelay set up, get it going with an after
        after cancel $Priv(afterId)
        set delay [$w cget -repeatdelay]
        set Priv(repeated) 0
        if {$delay > 0} {
            set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
        }
    }
}

# ::tk::ButtonUp --
# The procedure below is invoked when the mouse button is released
# in a button widget.  It restores the button's relief and invokes
# the command as long as the mouse hasn't left the button.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonUp w {
    variable ::tk::Priv
    if {$Priv(buttonWindow) eq $w} {
        set Priv(buttonWindow) ""

        # Restore the button's relief if it was cached.

        if {[info exists Priv($w,relief)]} {
            if {[info exists Priv($w,prelief)] && \
                    $Priv($w,prelief) eq [$w cget -relief]} {
                $w configure -relief $Priv($w,relief)
            }
            unset -nocomplain Priv($w,relief) Priv($w,prelief)
        }

        # Clean up the after event from the auto-repeater
        after cancel $Priv(afterId)

        if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
            $w configure -state normal

            # Only invoke the command if it wasn't already invoked by the
            # auto-repeater functionality
            if { $Priv(repeated) == 0 } {
                uplevel #0 [list $w invoke]
            }
        }
    }
}

# ::tk::CheckRadioEnter --
# The procedure below is invoked when the mouse pointer enters a
# checkbutton or radiobutton widget.  It records the button we're in
# and changes the state of the button to active unless the button is
# disabled.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::CheckRadioEnter w {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
        if {$Priv(buttonWindow) eq $w} {
            $w configure -state active
        }
        if {[set over [$w cget -overrelief]] ne ""} {
            set Priv($w,relief)  [$w cget -relief]
            set Priv($w,prelief) $over
            $w configure -relief $over
        }
    }
    set Priv(window) $w
}

# ::tk::CheckRadioDown --
# The procedure below is invoked when the mouse button is pressed in
# a button widget.  It records the fact that the mouse is in the button,
# saves the button's relief so it can be restored later, and changes
# the relief to sunken.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::CheckRadioDown w {
    variable ::tk::Priv
    if {![info exists Priv($w,relief)]} {
        set Priv($w,relief) [$w cget -relief]
    }
    if {[$w cget -state] ne "disabled"} {
        set Priv(buttonWindow) $w
        set Priv(repeated) 0
        $w configure -state active
    }
}

}

if {[string equal "x11" [tk windowingsystem]]} {

#####################
# Unix implementation
#####################

# ::tk::ButtonEnter --
# The procedure below is invoked when the mouse pointer enters a
# button widget.  It records the button we're in and changes the
# state of the button to active unless the button is disabled.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonEnter {w} {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
        # On unix the state is active just with mouse-over
        $w configure -state active

        # If the mouse button is down, set the relief to sunken on entry.
        # Overwise, if there's an -overrelief value, set the relief to that.

        set Priv($w,relief) [$w cget -relief]
        if {$Priv(buttonWindow) eq $w} {
            $w configure -relief sunken
            set Priv($w,prelief) sunken
        } elseif {[set over [$w cget -overrelief]] ne ""} {
            $w configure -relief $over
            set Priv($w,prelief) $over
        }
    }
    set Priv(window) $w
}

# ::tk::ButtonLeave --
# The procedure below is invoked when the mouse pointer leaves a
# button widget.  It changes the state of the button back to inactive.
# Restore any modified relief too.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonLeave w {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
        $w configure -state normal
    }

    # Restore the original button relief if it was changed by Tk.
    # That is signaled by the existence of Priv($w,prelief).

    if {[info exists Priv($w,relief)]} {
        if {[info exists Priv($w,prelief)] && \
                $Priv($w,prelief) eq [$w cget -relief]} {
            $w configure -relief $Priv($w,relief)
        }
        unset -nocomplain Priv($w,relief) Priv($w,prelief)
    }

    set Priv(window) ""
}

# ::tk::ButtonDown --
# The procedure below is invoked when the mouse button is pressed in
# a button widget.  It records the fact that the mouse is in the button,
# saves the button's relief so it can be restored later, and changes
# the relief to sunken.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonDown w {
    variable ::tk::Priv

    # Only save the button's relief if it does not yet exist.  If there
    # is an overrelief setting, Priv($w,relief) will already have been set,
    # and the current value of the -relief option will be incorrect.

    if {![info exists Priv($w,relief)]} {
        set Priv($w,relief) [$w cget -relief]
    }

    if {[$w cget -state] ne "disabled"} {
        set Priv(buttonWindow) $w
        $w configure -relief sunken
        set Priv($w,prelief) sunken

        # If this button has a repeatdelay set up, get it going with an after
        after cancel $Priv(afterId)
        set delay [$w cget -repeatdelay]
        set Priv(repeated) 0
        if {$delay > 0} {
            set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
        }
    }
}

# ::tk::ButtonUp --
# The procedure below is invoked when the mouse button is released
# in a button widget.  It restores the button's relief and invokes
# the command as long as the mouse hasn't left the button.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonUp w {
    variable ::tk::Priv
    if {[string equal $w $Priv(buttonWindow)]} {
        set Priv(buttonWindow) ""

        # Restore the button's relief if it was cached.

        if {[info exists Priv($w,relief)]} {
            if {[info exists Priv($w,prelief)] && \
                    $Priv($w,prelief) eq [$w cget -relief]} {
                $w configure -relief $Priv($w,relief)
            }
            unset -nocomplain Priv($w,relief) Priv($w,prelief)
        }

        # Clean up the after event from the auto-repeater
        after cancel $Priv(afterId)

        if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
            # Only invoke the command if it wasn't already invoked by the
            # auto-repeater functionality
            if { $Priv(repeated) == 0 } {
                uplevel #0 [list $w invoke]
            }
        }
    }
}

}

if {[string equal [tk windowingsystem] "classic"]
        || [string equal [tk windowingsystem] "aqua"]} {

####################
# Mac implementation
####################

# ::tk::ButtonEnter --
# The procedure below is invoked when the mouse pointer enters a
# button widget.  It records the button we're in and changes the
# state of the button to active unless the button is disabled.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonEnter {w} {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {

        # If there's an -overrelief value, set the relief to that.

        if {$Priv(buttonWindow) eq $w} {
            $w configure -state active
        } elseif {[set over [$w cget -overrelief]] ne ""} {
            set Priv($w,relief)  [$w cget -relief]
            set Priv($w,prelief) $over
            $w configure -relief $over
        }
    }
    set Priv(window) $w
}

# ::tk::ButtonLeave --
# The procedure below is invoked when the mouse pointer leaves a
# button widget.  It changes the state of the button back to
# inactive.  If we're leaving the button window with a mouse button
# pressed (Priv(buttonWindow) == $w), restore the relief of the
# button too.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonLeave w {
    variable ::tk::Priv
    if {$w eq $Priv(buttonWindow)} {
        $w configure -state normal
    }

    # Restore the original button relief if it was changed by Tk.
    # That is signaled by the existence of Priv($w,prelief).

    if {[info exists Priv($w,relief)]} {
        if {[info exists Priv($w,prelief)] && \
                $Priv($w,prelief) eq [$w cget -relief]} {
            $w configure -relief $Priv($w,relief)
        }
        unset -nocomplain Priv($w,relief) Priv($w,prelief)
    }

    set Priv(window) ""
}

# ::tk::ButtonDown --
# The procedure below is invoked when the mouse button is pressed in
# a button widget.  It records the fact that the mouse is in the button,
# saves the button's relief so it can be restored later, and changes
# the relief to sunken.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonDown w {
    variable ::tk::Priv

    if {[$w cget -state] ne "disabled"} {
        set Priv(buttonWindow) $w
        $w configure -state active

        # If this button has a repeatdelay set up, get it going with an after
        after cancel $Priv(afterId)
        set Priv(repeated) 0
        if { ![catch {$w cget -repeatdelay} delay] } {
            if {$delay > 0} {
                set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
            }
        }
    }
}

# ::tk::ButtonUp --
# The procedure below is invoked when the mouse button is released
# in a button widget.  It restores the button's relief and invokes
# the command as long as the mouse hasn't left the button.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonUp w {
    variable ::tk::Priv
    if {$Priv(buttonWindow) eq $w} {
        set Priv(buttonWindow) ""
        $w configure -state normal

        # Restore the button's relief if it was cached.

        if {[info exists Priv($w,relief)]} {
            if {[info exists Priv($w,prelief)] && \
                    $Priv($w,prelief) eq [$w cget -relief]} {
                $w configure -relief $Priv($w,relief)
            }
            unset -nocomplain Priv($w,relief) Priv($w,prelief)
        }

        # Clean up the after event from the auto-repeater
        after cancel $Priv(afterId)

        if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
            # Only invoke the command if it wasn't already invoked by the
            # auto-repeater functionality
            if { $Priv(repeated) == 0 } {
                uplevel #0 [list $w invoke]
            }
        }
    }
}

}

##################
# Shared routines
##################

# ::tk::ButtonInvoke --
# The procedure below is called when a button is invoked through
# the keyboard.  It simulate a press of the button via the mouse.
#
# Arguments:
# w -           The name of the widget.

proc ::tk::ButtonInvoke w {
    if {[$w cget -state] ne "disabled"} {
        set oldRelief [$w cget -relief]
        set oldState [$w cget -state]
        $w configure -state active -relief sunken
        update idletasks
        after 100
        $w configure -state $oldState -relief $oldRelief
        uplevel #0 [list $w invoke]
    }
}

# ::tk::ButtonAutoInvoke --
#
#       Invoke an auto-repeating button, and set it up to continue to repeat.
#
# Arguments:
#       w       button to invoke.
#
# Results:
#       None.
#
# Side effects:
#       May create an after event to call ::tk::ButtonAutoInvoke.

proc ::tk::ButtonAutoInvoke {w} {
    variable ::tk::Priv
    after cancel $Priv(afterId)
    set delay [$w cget -repeatinterval]
    if {$Priv(window) eq $w} {
        incr Priv(repeated)
        uplevel #0 [list $w invoke]
    }
    if {$delay > 0} {
        set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
    }
}

# ::tk::CheckRadioInvoke --
# The procedure below is invoked when the mouse button is pressed in
# a checkbutton or radiobutton widget, or when the widget is invoked
# through the keyboard.  It invokes the widget if it
# isn't disabled.
#
# Arguments:
# w -           The name of the widget.
# cmd -         The subcommand to invoke (one of invoke, select, or deselect).

proc ::tk::CheckRadioInvoke {w {cmd invoke}} {
    if {[$w cget -state] ne "disabled"} {
        uplevel #0 [list $w $cmd]
    }
}