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187 lines
3.9 KiB
187 lines
3.9 KiB
#
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# Map symbolic cursor names to platform-appropriate cursors.
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#
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# The following cursors are defined:
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#
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# standard -- default cursor for most controls
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# "" -- inherit cursor from parent window
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# none -- no cursor
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#
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# text -- editable widgets (entry, text)
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# link -- hyperlinks within text
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# crosshair -- graphic selection, fine control
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# busy -- operation in progress
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# forbidden -- action not allowed
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#
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# hresize -- horizontal resizing
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# vresize -- vertical resizing
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#
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# Also resize cursors for each of the compass points,
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# {nw,n,ne,w,e,sw,s,se}resize.
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#
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# Platform notes:
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#
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# Windows doesn't distinguish resizing at the 8 compass points,
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# only horizontal, vertical, and the two diagonals.
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#
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# OSX doesn't have resize cursors for nw, ne, sw, or se corners.
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# We use the Tk-defined X11 fallbacks for these.
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#
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# X11 doesn't have a "forbidden" cursor (usually a slashed circle);
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# "pirate" seems to be the conventional cursor for this purpose.
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#
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# Windows has an IDC_HELP cursor, but it's not available from Tk.
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#
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# Tk does not support "none" on Windows.
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#
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namespace eval ttk {
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variable Cursors
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# Use X11 cursor names as defaults, since Tk supplies these
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# on all platforms.
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#
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array set Cursors {
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"" ""
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none none
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standard left_ptr
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text xterm
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link hand2
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crosshair crosshair
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busy watch
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forbidden pirate
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hresize sb_h_double_arrow
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vresize sb_v_double_arrow
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nresize top_side
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sresize bottom_side
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wresize left_side
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eresize right_side
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nwresize top_left_corner
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neresize top_right_corner
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swresize bottom_left_corner
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seresize bottom_right_corner
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move fleur
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}
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# Platform-specific overrides for Windows and OSX.
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#
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switch [tk windowingsystem] {
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"win32" {
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array set Cursors {
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none {}
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standard arrow
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text ibeam
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link hand2
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crosshair crosshair
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busy wait
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forbidden no
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vresize size_ns
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nresize size_ns
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sresize size_ns
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wresize size_we
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eresize size_we
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hresize size_we
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nwresize size_nw_se
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swresize size_ne_sw
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neresize size_ne_sw
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seresize size_nw_se
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}
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}
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"aqua" {
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if {[package vsatisfies [package provide Tk] 8.5]} {
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# appeared 2007-04-23, Tk 8.5a6
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array set Cursors {
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standard arrow
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text ibeam
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link pointinghand
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crosshair crosshair
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busy watch
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forbidden notallowed
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hresize resizeleftright
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vresize resizeupdown
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nresize resizeup
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sresize resizedown
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wresize resizeleft
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eresize resizeright
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}
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}
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}
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}
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}
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## ttk::cursor $cursor --
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# Return platform-specific cursor for specified symbolic cursor.
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#
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proc ttk::cursor {name} {
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variable Cursors
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return $Cursors($name)
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}
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## ttk::setCursor $w $cursor --
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# Set the cursor for specified window.
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#
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# [ttk::setCursor] should be used in <Motion> bindings
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# instead of directly calling [$w configure -cursor ...],
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# as the latter always incurs a server round-trip and
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# can lead to high CPU load (see [#1184746])
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#
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proc ttk::setCursor {w name} {
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variable Cursors
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if {[$w cget -cursor] ne $Cursors($name)} {
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$w configure -cursor $Cursors($name)
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}
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}
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## Interactive test harness:
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#
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proc ttk::CursorSampler {f} {
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ttk::frame $f
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set r 0
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foreach row {
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{nwresize nresize neresize}
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{ wresize move eresize}
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{swresize sresize seresize}
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{text link crosshair}
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{hresize vresize ""}
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{busy forbidden ""}
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{none standard ""}
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} {
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set c 0
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foreach cursor $row {
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set w $f.${r}${c}
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ttk::label $w -text $cursor -cursor [ttk::cursor $cursor] \
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-relief solid -borderwidth 1 -padding 3
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grid $w -row $r -column $c -sticky nswe
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grid columnconfigure $f $c -uniform cols -weight 1
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incr c
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}
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grid rowconfigure $f $r -uniform rows -weight 1
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incr r
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}
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return $f
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}
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if {[info exists argv0] && $argv0 eq [info script]} {
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wm title . "[array size ::ttk::Cursors] cursors"
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pack [ttk::CursorSampler .f] -expand true -fill both
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bind . <KeyPress-Escape> [list destroy .]
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focus .f
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}
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#*EOF*
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