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-rw-r--r--library/ttk/cursors.tcl181
1 files changed, 167 insertions, 14 deletions
diff --git a/library/ttk/cursors.tcl b/library/ttk/cursors.tcl
index a151194..f5abd54 100644
--- a/library/ttk/cursors.tcl
+++ b/library/ttk/cursors.tcl
@@ -1,35 +1,188 @@
#
-# $Id: cursors.tcl,v 1.1 2006/10/31 01:42:27 hobbs Exp $
+# $Id: cursors.tcl,v 1.1.4.1 2009/04/10 16:39:47 das Exp $
#
-# Ttk package: Symbolic cursor names.
+# Map symbolic cursor names to platform-appropriate cursors.
#
-# @@@ TODO: Figure out appropriate platform-specific cursors
-# for the various functions.
+# The following cursors are defined:
+#
+# standard -- default cursor for most controls
+# "" -- inherit cursor from parent window
+# none -- no cursor
+#
+# text -- editable widgets (entry, text)
+# link -- hyperlinks within text
+# crosshair -- graphic selection, fine control
+# busy -- operation in progress
+# forbidden -- action not allowed
+#
+# hresize -- horizontal resizing
+# vresize -- vertical resizing
+#
+# Also resize cursors for each of the compass points,
+# {nw,n,ne,w,e,sw,s,se}resize.
+#
+# Platform notes:
+#
+# Windows doesn't distinguish resizing at the 8 compass points,
+# only horizontal, vertical, and the two diagonals.
+#
+# OSX doesn't have resize cursors for nw, ne, sw, or se corners.
+# We use the Tk-defined X11 fallbacks for these.
+#
+# X11 doesn't have a "forbidden" cursor (usually a slashed circle);
+# "pirate" seems to be the conventional cursor for this purpose.
+#
+# Windows has an IDC_HELP cursor, but it's not available from Tk.
+#
+# Tk does not support "none" on Windows.
#
namespace eval ttk {
variable Cursors
- switch -glob $::tcl_platform(platform) {
- "windows" {
+ # Use X11 cursor names as defaults, since Tk supplies these
+ # on all platforms.
+ #
+ array set Cursors {
+ "" ""
+ none none
+
+ standard left_ptr
+ text xterm
+ link hand2
+ crosshair crosshair
+ busy watch
+ forbidden pirate
+
+ hresize sb_h_double_arrow
+ vresize sb_v_double_arrow
+
+ nresize top_side
+ sresize bottom_side
+ wresize left_side
+ eresize right_side
+ nwresize top_left_corner
+ neresize top_right_corner
+ swresize bottom_left_corner
+ seresize bottom_right_corner
+ move fleur
+
+ }
+
+ # Platform-specific overrides for Windows and OSX.
+ #
+ switch [tk windowingsystem] {
+ "win32" {
array set Cursors {
- hresize sb_h_double_arrow
- vresize sb_v_double_arrow
+ none {}
+
+ standard arrow
+ text ibeam
+ link hand2
+ crosshair crosshair
+ busy wait
+ forbidden no
+
+ vresize size_ns
+ nresize size_ns
+ sresize size_ns
+
+ wresize size_we
+ eresize size_we
+ hresize size_we
+
+ nwresize size_nw_se
+ swresize size_ne_sw
+
+ neresize size_ne_sw
seresize size_nw_se
}
}
- "unix" -
- * {
- array set Cursors {
- hresize sb_h_double_arrow
- vresize sb_v_double_arrow
- seresize bottom_right_corner
+ "aqua" {
+ if {[package vsatisfies [package provide Tk] 8.5]} {
+ # appeared 2007-04-23, Tk 8.5a6
+ array set Cursors {
+ standard arrow
+ text ibeam
+ link pointinghand
+ crosshair crosshair
+ busy watch
+ forbidden notallowed
+
+ hresize resizeleftright
+ vresize resizeupdown
+ nresize resizeup
+ sresize resizedown
+ wresize resizeleft
+ eresize resizeright
+ }
}
}
+ }
+}
+
+## ttk::cursor $cursor --
+# Return platform-specific cursor for specified symbolic cursor.
+#
+proc ttk::cursor {name} {
+ variable Cursors
+ return $Cursors($name)
+}
+
+## ttk::setCursor $w $cursor --
+# Set the cursor for specified window.
+#
+# [ttk::setCursor] should be used in <Motion> bindings
+# instead of directly calling [$w configure -cursor ...],
+# as the latter always incurs a server round-trip and
+# can lead to high CPU load (see [#1184746])
+#
+proc ttk::setCursor {w name} {
+ variable Cursors
+ if {[$w cget -cursor] ne $Cursors($name)} {
+ $w configure -cursor $Cursors($name)
+ }
+}
+
+## Interactive test harness:
+#
+proc ttk::CursorSampler {f} {
+ ttk::frame $f
+
+ set r 0
+ foreach row {
+ {nwresize nresize neresize}
+ { wresize move eresize}
+ {swresize sresize seresize}
+ {text link crosshair}
+ {hresize vresize ""}
+ {busy forbidden ""}
+ {none standard ""}
+ } {
+ set c 0
+ foreach cursor $row {
+ set w $f.${r}${c}
+ ttk::label $w -text $cursor -cursor [ttk::cursor $cursor] \
+ -relief solid -borderwidth 1 -padding 3
+ grid $w -row $r -column $c -sticky nswe
+ grid columnconfigure $f $c -uniform cols -weight 1
+ incr c
+ }
+ grid rowconfigure $f $r -uniform rows -weight 1
+ incr r
}
+
+ return $f
+}
+
+if {[info exists argv0] && $argv0 eq [info script]} {
+ wm title . "[array size ::ttk::Cursors] cursors"
+ pack [ttk::CursorSampler .f] -expand true -fill both
+ bind . <KeyPress-Escape> [list destroy .]
+ focus .f
}
#*EOF*