1 files changed, 77 insertions, 0 deletions
diff --git a/library/ttk/sizegrip.tcl b/library/ttk/sizegrip.tcl
new file mode 100644
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+++ b/library/ttk/sizegrip.tcl
@@ -0,0 +1,77 @@
+#
+# $Id: sizegrip.tcl,v 1.1 2006/10/31 01:42:27 hobbs Exp $
+#
+# Ttk widget set -- sizegrip widget bindings.
+#
+# Dragging a sizegrip widget resizes the containing toplevel.
+#
+# NOTE: the sizegrip widget must be in the lower right hand corner.
+#
+
+option add *TSizegrip.cursor $::ttk::Cursors(seresize)
+
+namespace eval ttk::sizegrip {
+    variable State
+    array set State {
+	pressed 	0
+	pressX 		0
+	pressY 		0
+	width 		0
+	height 		0
+	widthInc	1
+	heightInc	1
+	toplevel 	{}
+    }
+}
+
+bind TSizegrip <ButtonPress-1> 		{ ttk::sizegrip::Press	%W %X %Y }
+bind TSizegrip <B1-Motion> 		{ ttk::sizegrip::Drag 	%W %X %Y }
+bind TSizegrip <ButtonRelease-1> 	{ ttk::sizegrip::Release %W %X %Y }
+
+proc ttk::sizegrip::Press {W X Y} {
+    variable State
+
+    set top [winfo toplevel $W]
+
+    # Sanity-checks:
+    #	If a negative X or Y position was specified for [wm geometry],
+    #   just bail out -- there's no way to handle this cleanly.
+    #
+    if {[scan [wm geometry $top] "%dx%d+%d+%d" width height _x _y] != 4} {
+	return;
+    }
+
+    # Account for gridded geometry:
+    #
+    set grid [wm grid $top]
+    if {[llength $grid]} {
+	set State(widthInc) [lindex $grid 2]
+	set State(heightInc) [lindex $grid 3]
+    } else {
+	set State(widthInc) [set State(heightInc) 1]
+    }
+
+    set State(toplevel) $top
+    set State(pressX) $X
+    set State(pressY) $Y
+    set State(width)  $width
+    set State(height) $height
+    set State(pressed) 1
+}
+
+proc ttk::sizegrip::Drag {W X Y} {
+    variable State
+    if {!$State(pressed)} { return }
+    set w [expr {$State(width)  + ($X - $State(pressX))/$State(widthInc)}]
+    set h [expr {$State(height) + ($Y - $State(pressY))/$State(heightInc)}]
+    if {$w <= 0} { set w 1 }
+    if {$h <= 0} { set h 1 }
+    wm geometry $State(toplevel) ${w}x${h}
+}
+
+proc ttk::sizegrip::Release {W X Y} {
+    variable State
+    set State(pressed) 0
+}
+
+#*EOF*