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Diffstat (limited to 'tk8.6/library/scrlbar.tcl')
| -rw-r--r-- | tk8.6/library/scrlbar.tcl | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/tk8.6/library/scrlbar.tcl b/tk8.6/library/scrlbar.tcl deleted file mode 100644 index 6f1caa2..0000000 --- a/tk8.6/library/scrlbar.tcl +++ /dev/null @@ -1,454 +0,0 @@ -# scrlbar.tcl -- -# -# This file defines the default bindings for Tk scrollbar widgets. -# It also provides procedures that help in implementing the bindings. -# -# Copyright (c) 1994 The Regents of the University of California. -# Copyright (c) 1994-1996 Sun Microsystems, Inc. -# -# 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 scrollbars. -#------------------------------------------------------------------------- - -# Standard Motif bindings: -if {[tk windowingsystem] eq "x11" || [tk windowingsystem] eq "aqua"} { - -bind Scrollbar <Enter> { - if {$tk_strictMotif} { - set tk::Priv(activeBg) [%W cget -activebackground] - %W configure -activebackground [%W cget -background] - } - %W activate [%W identify %x %y] -} -bind Scrollbar <Motion> { - %W activate [%W identify %x %y] -} - -# The "info exists" command in the following binding handles the -# situation where a Leave event occurs for a scrollbar without the Enter -# event. This seems to happen on some systems (such as Solaris 2.4) for -# unknown reasons. - -bind Scrollbar <Leave> { - if {$tk_strictMotif && [info exists tk::Priv(activeBg)]} { - %W configure -activebackground $tk::Priv(activeBg) - } - %W activate {} -} -bind Scrollbar <1> { - tk::ScrollButtonDown %W %x %y -} -bind Scrollbar <B1-Motion> { - tk::ScrollDrag %W %x %y -} -bind Scrollbar <B1-B2-Motion> { - tk::ScrollDrag %W %x %y -} -bind Scrollbar <ButtonRelease-1> { - tk::ScrollButtonUp %W %x %y -} -bind Scrollbar <B1-Leave> { - # Prevents <Leave> binding from being invoked. -} -bind Scrollbar <B1-Enter> { - # Prevents <Enter> binding from being invoked. -} -bind Scrollbar <2> { - tk::ScrollButton2Down %W %x %y -} -bind Scrollbar <B1-2> { - # Do nothing, since button 1 is already down. -} -bind Scrollbar <B2-1> { - # Do nothing, since button 2 is already down. -} -bind Scrollbar <B2-Motion> { - tk::ScrollDrag %W %x %y -} -bind Scrollbar <ButtonRelease-2> { - tk::ScrollButtonUp %W %x %y -} -bind Scrollbar <B1-ButtonRelease-2> { - # Do nothing: B1 release will handle it. -} -bind Scrollbar <B2-ButtonRelease-1> { - # Do nothing: B2 release will handle it. -} -bind Scrollbar <B2-Leave> { - # Prevents <Leave> binding from being invoked. -} -bind Scrollbar <B2-Enter> { - # Prevents <Enter> binding from being invoked. -} -bind Scrollbar <Control-1> { - tk::ScrollTopBottom %W %x %y -} -bind Scrollbar <Control-2> { - tk::ScrollTopBottom %W %x %y -} - -bind Scrollbar <<PrevLine>> { - tk::ScrollByUnits %W v -1 -} -bind Scrollbar <<NextLine>> { - tk::ScrollByUnits %W v 1 -} -bind Scrollbar <<PrevPara>> { - tk::ScrollByPages %W v -1 -} -bind Scrollbar <<NextPara>> { - tk::ScrollByPages %W v 1 -} -bind Scrollbar <<PrevChar>> { - tk::ScrollByUnits %W h -1 -} -bind Scrollbar <<NextChar>> { - tk::ScrollByUnits %W h 1 -} -bind Scrollbar <<PrevWord>> { - tk::ScrollByPages %W h -1 -} -bind Scrollbar <<NextWord>> { - tk::ScrollByPages %W h 1 -} -bind Scrollbar <Prior> { - tk::ScrollByPages %W hv -1 -} -bind Scrollbar <Next> { - tk::ScrollByPages %W hv 1 -} -bind Scrollbar <<LineStart>> { - tk::ScrollToPos %W 0 -} -bind Scrollbar <<LineEnd>> { - tk::ScrollToPos %W 1 -} -} -switch [tk windowingsystem] { - "aqua" { - bind Scrollbar <MouseWheel> { - tk::ScrollByUnits %W v [expr {- (%D)}] - } - bind Scrollbar <Option-MouseWheel> { - tk::ScrollByUnits %W v [expr {-10 * (%D)}] - } - bind Scrollbar <Shift-MouseWheel> { - tk::ScrollByUnits %W h [expr {- (%D)}] - } - bind Scrollbar <Shift-Option-MouseWheel> { - tk::ScrollByUnits %W h [expr {-10 * (%D)}] - } - } - "win32" { - bind Scrollbar <MouseWheel> { - tk::ScrollByUnits %W v [expr {- (%D / 120) * 4}] - } - bind Scrollbar <Shift-MouseWheel> { - tk::ScrollByUnits %W h [expr {- (%D / 120) * 4}] - } - } - "x11" { - bind Scrollbar <MouseWheel> { - tk::ScrollByUnits %W v [expr {- (%D /120 ) * 4}] - } - bind Scrollbar <Shift-MouseWheel> { - tk::ScrollByUnits %W h [expr {- (%D /120 ) * 4}] - } - bind Scrollbar <4> {tk::ScrollByUnits %W v -5} - bind Scrollbar <5> {tk::ScrollByUnits %W v 5} - bind Scrollbar <Shift-4> {tk::ScrollByUnits %W h -5} - bind Scrollbar <Shift-5> {tk::ScrollByUnits %W h 5} - } -} -# tk::ScrollButtonDown -- -# This procedure is invoked when a button is pressed in a scrollbar. -# It changes the way the scrollbar is displayed and takes actions -# depending on where the mouse is. -# -# Arguments: -# w - The scrollbar widget. -# x, y - Mouse coordinates. - -proc tk::ScrollButtonDown {w x y} { - variable ::tk::Priv - set Priv(relief) [$w cget -activerelief] - $w configure -activerelief sunken - set element [$w identify $x $y] - if {$element eq "slider"} { - ScrollStartDrag $w $x $y - } else { - ScrollSelect $w $element initial - } -} - -# ::tk::ScrollButtonUp -- -# This procedure is invoked when a button is released in a scrollbar. -# It cancels scans and auto-repeats that were in progress, and restores -# the way the active element is displayed. -# -# Arguments: -# w - The scrollbar widget. -# x, y - Mouse coordinates. - -proc ::tk::ScrollButtonUp {w x y} { - variable ::tk::Priv - tk::CancelRepeat - if {[info exists Priv(relief)]} { - # Avoid error due to spurious release events - $w configure -activerelief $Priv(relief) - ScrollEndDrag $w $x $y - $w activate [$w identify $x $y] - } -} - -# ::tk::ScrollSelect -- -# This procedure is invoked when a button is pressed over the scrollbar. -# It invokes one of several scrolling actions depending on where in -# the scrollbar the button was pressed. -# -# Arguments: -# w - The scrollbar widget. -# element - The element of the scrollbar that was selected, such -# as "arrow1" or "trough2". Shouldn't be "slider". -# repeat - Whether and how to auto-repeat the action: "noRepeat" -# means don't auto-repeat, "initial" means this is the -# first action in an auto-repeat sequence, and "again" -# means this is the second repetition or later. - -proc ::tk::ScrollSelect {w element repeat} { - variable ::tk::Priv - if {![winfo exists $w]} return - switch -- $element { - "arrow1" {ScrollByUnits $w hv -1} - "trough1" {ScrollByPages $w hv -1} - "trough2" {ScrollByPages $w hv 1} - "arrow2" {ScrollByUnits $w hv 1} - default {return} - } - if {$repeat eq "again"} { - set Priv(afterId) [after [$w cget -repeatinterval] \ - [list tk::ScrollSelect $w $element again]] - } elseif {$repeat eq "initial"} { - set delay [$w cget -repeatdelay] - if {$delay > 0} { - set Priv(afterId) [after $delay \ - [list tk::ScrollSelect $w $element again]] - } - } -} - -# ::tk::ScrollStartDrag -- -# This procedure is called to initiate a drag of the slider. It just -# remembers the starting position of the mouse and slider. -# -# Arguments: -# w - The scrollbar widget. -# x, y - The mouse position at the start of the drag operation. - -proc ::tk::ScrollStartDrag {w x y} { - variable ::tk::Priv - - if {[$w cget -command] eq ""} { - return - } - set Priv(pressX) $x - set Priv(pressY) $y - set Priv(initValues) [$w get] - set iv0 [lindex $Priv(initValues) 0] - if {[llength $Priv(initValues)] == 2} { - set Priv(initPos) $iv0 - } elseif {$iv0 == 0} { - set Priv(initPos) 0.0 - } else { - set Priv(initPos) [expr {(double([lindex $Priv(initValues) 2])) \ - / [lindex $Priv(initValues) 0]}] - } -} - -# ::tk::ScrollDrag -- -# This procedure is called for each mouse motion even when the slider -# is being dragged. It notifies the associated widget if we're not -# jump scrolling, and it just updates the scrollbar if we are jump -# scrolling. -# -# Arguments: -# w - The scrollbar widget. -# x, y - The current mouse position. - -proc ::tk::ScrollDrag {w x y} { - variable ::tk::Priv - - if {$Priv(initPos) eq ""} { - return - } - set delta [$w delta [expr {$x - $Priv(pressX)}] [expr {$y - $Priv(pressY)}]] - if {[$w cget -jump]} { - if {[llength $Priv(initValues)] == 2} { - $w set [expr {[lindex $Priv(initValues) 0] + $delta}] \ - [expr {[lindex $Priv(initValues) 1] + $delta}] - } else { - set delta [expr {round($delta * [lindex $Priv(initValues) 0])}] - eval [list $w] set [lreplace $Priv(initValues) 2 3 \ - [expr {[lindex $Priv(initValues) 2] + $delta}] \ - [expr {[lindex $Priv(initValues) 3] + $delta}]] - } - } else { - ScrollToPos $w [expr {$Priv(initPos) + $delta}] - } -} - -# ::tk::ScrollEndDrag -- -# This procedure is called to end an interactive drag of the slider. -# It scrolls the window if we're in jump mode, otherwise it does nothing. -# -# Arguments: -# w - The scrollbar widget. -# x, y - The mouse position at the end of the drag operation. - -proc ::tk::ScrollEndDrag {w x y} { - variable ::tk::Priv - - if {$Priv(initPos) eq ""} { - return - } - if {[$w cget -jump]} { - set delta [$w delta [expr {$x - $Priv(pressX)}] \ - [expr {$y - $Priv(pressY)}]] - ScrollToPos $w [expr {$Priv(initPos) + $delta}] - } - set Priv(initPos) "" -} - -# ::tk::ScrollByUnits -- -# This procedure tells the scrollbar's associated widget to scroll up -# or down by a given number of units. It notifies the associated widget -# in different ways for old and new command syntaxes. -# -# Arguments: -# w - The scrollbar widget. -# orient - Which kinds of scrollbars this applies to: "h" for -# horizontal, "v" for vertical, "hv" for both. -# amount - How many units to scroll: typically 1 or -1. - -proc ::tk::ScrollByUnits {w orient amount} { - set cmd [$w cget -command] - if {$cmd eq "" || ([string first \ - [string index [$w cget -orient] 0] $orient] < 0)} { - return - } - set info [$w get] - if {[llength $info] == 2} { - uplevel #0 $cmd scroll $amount units - } else { - uplevel #0 $cmd [expr {[lindex $info 2] + $amount}] - } -} - -# ::tk::ScrollByPages -- -# This procedure tells the scrollbar's associated widget to scroll up -# or down by a given number of screenfuls. It notifies the associated -# widget in different ways for old and new command syntaxes. -# -# Arguments: -# w - The scrollbar widget. -# orient - Which kinds of scrollbars this applies to: "h" for -# horizontal, "v" for vertical, "hv" for both. -# amount - How many screens to scroll: typically 1 or -1. - -proc ::tk::ScrollByPages {w orient amount} { - set cmd [$w cget -command] - if {$cmd eq "" || ([string first \ - [string index [$w cget -orient] 0] $orient] < 0)} { - return - } - set info [$w get] - if {[llength $info] == 2} { - uplevel #0 $cmd scroll $amount pages - } else { - uplevel #0 $cmd [expr {[lindex $info 2] + $amount*([lindex $info 1] - 1)}] - } -} - -# ::tk::ScrollToPos -- -# This procedure tells the scrollbar's associated widget to scroll to -# a particular location, given by a fraction between 0 and 1. It notifies -# the associated widget in different ways for old and new command syntaxes. -# -# Arguments: -# w - The scrollbar widget. -# pos - A fraction between 0 and 1 indicating a desired position -# in the document. - -proc ::tk::ScrollToPos {w pos} { - set cmd [$w cget -command] - if {$cmd eq ""} { - return - } - set info [$w get] - if {[llength $info] == 2} { - uplevel #0 $cmd moveto $pos - } else { - uplevel #0 $cmd [expr {round([lindex $info 0]*$pos)}] - } -} - -# ::tk::ScrollTopBottom -# Scroll to the top or bottom of the document, depending on the mouse -# position. -# -# Arguments: -# w - The scrollbar widget. -# x, y - Mouse coordinates within the widget. - -proc ::tk::ScrollTopBottom {w x y} { - variable ::tk::Priv - set element [$w identify $x $y] - if {[string match *1 $element]} { - ScrollToPos $w 0 - } elseif {[string match *2 $element]} { - ScrollToPos $w 1 - } - - # Set Priv(relief), since it's needed by tk::ScrollButtonUp. - - set Priv(relief) [$w cget -activerelief] -} - -# ::tk::ScrollButton2Down -# This procedure is invoked when button 2 is pressed over a scrollbar. -# If the button is over the trough or slider, it sets the scrollbar to -# the mouse position and starts a slider drag. Otherwise it just -# behaves the same as button 1. -# -# Arguments: -# w - The scrollbar widget. -# x, y - Mouse coordinates within the widget. - -proc ::tk::ScrollButton2Down {w x y} { - variable ::tk::Priv - if {![winfo exists $w]} { - return - } - set element [$w identify $x $y] - if {[string match {arrow[12]} $element]} { - ScrollButtonDown $w $x $y - return - } - ScrollToPos $w [$w fraction $x $y] - set Priv(relief) [$w cget -activerelief] - - # Need the "update idletasks" below so that the widget calls us - # back to reset the actual scrollbar position before we start the - # slider drag. - - update idletasks - if {[winfo exists $w]} { - $w configure -activerelief sunken - $w activate slider - ScrollStartDrag $w $x $y - } -} |