103 lines
2.3 KiB
Tcl
103 lines
2.3 KiB
Tcl
#
|
|
# 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 <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
|
|
|
|
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*
|