# # Sizegrip widget bindings. # # Dragging a sizegrip widget resizes the containing toplevel. # # NOTE: the sizegrip widget must be in the lower right hand corner. # switch -- [tk windowingsystem] { x11 - win32 { option add *TSizegrip.cursor [ttk::cursor seresize] } aqua { # Aqua sizegrips use default Arrow cursor. } } namespace eval ttk::sizegrip { variable State array set State { pressed 0 pressX 0 pressY 0 width 0 height 0 widthInc 1 heightInc 1 resizeX 1 resizeY 1 toplevel {} } } bind TSizegrip { ttk::sizegrip::Press %W %X %Y } bind TSizegrip { ttk::sizegrip::Drag %W %X %Y } bind TSizegrip { ttk::sizegrip::Release %W %X %Y } proc ttk::sizegrip::Press {W X Y} { variable State if {[$W instate disabled]} { return } set top [winfo toplevel $W] # If the toplevel is not resizable then bail foreach {State(resizeX) State(resizeY)} [wm resizable $top] break if {!$State(resizeX) && !$State(resizeY)} { return } # 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(x) $x set State(y) $y set State(pressed) 1 } proc ttk::sizegrip::Drag {W X Y} { variable State if {!$State(pressed)} { return } set w $State(width) set h $State(height) if {$State(resizeX)} { set w [expr {$w + ($X - $State(pressX))/$State(widthInc)}] } if {$State(resizeY)} { set h [expr {$h + ($Y - $State(pressY))/$State(heightInc)}] } if {$w <= 0} { set w 1 } if {$h <= 0} { set h 1 } set x $State(x) ; set y $State(y) wm geometry $State(toplevel) ${w}x${h}+${x}+${y} } proc ttk::sizegrip::Release {W X Y} { variable State set State(pressed) 0 } #*EOF*