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244 lines
7.0 KiB
Tcl
244 lines
7.0 KiB
Tcl
# toolbar.tcl - Handle layout for a toolbar.
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# Copyright (C) 1997 Cygnus Solutions.
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# Written by Tom Tromey <tromey@cygnus.com>.
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# This holds global state for this module.
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defarray TOOLBAR_state {
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initialized 0
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button ""
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window ""
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relief flat
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last ""
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}
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proc TOOLBAR_button_enter {w} {
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global TOOLBAR_state
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#save older relief (it covers buttons that
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#interacte like checkbuttons)
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set TOOLBAR_state(relief) [$w cget -relief]
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if {[$w cget -state] != "disabled"} then {
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if {$TOOLBAR_state(button) == $w} then {
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set relief sunken
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} else {
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set relief raised
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}
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$w configure \
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-state active \
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-relief $relief
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}
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#store last action to synchronize operations
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set TOOLBAR_state(last) enter
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set TOOLBAR_state(window) $w
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}
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proc TOOLBAR_button_leave {w} {
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global TOOLBAR_state
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if {[$w cget -state] != "disabled"} then {
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$w configure -state normal
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}
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#restore original relief
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if {
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$TOOLBAR_state(window) == $w
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&& $TOOLBAR_state(last) == "enter"
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} then {
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$w configure -relief $TOOLBAR_state(relief)
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} else {
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$w configure -relief flat
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}
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set TOOLBAR_state(window) ""
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#store last action to synch operations (enter->leave)
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set TOOLBAR_state(last) leave
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}
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proc TOOLBAR_button_down {w} {
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global TOOLBAR_state
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if {[$w cget -state] != "disabled"} then {
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set TOOLBAR_state(button) $w
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$w configure -relief sunken
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}
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}
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proc TOOLBAR_button_up {w} {
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global TOOLBAR_state
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if {$w == $TOOLBAR_state(button)} then {
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set TOOLBAR_state(button) ""
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#restore original relief
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$w configure -relief $TOOLBAR_state(relief)
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if {$TOOLBAR_state(window) == $w
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&& [$w cget -state] != "disabled"} then {
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#SN does the toolbar bindings using "+" so that older
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#bindings don't disapear. So no need to invoke the command.
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#other applications should do the same so that we can delete
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#this hack
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global sn_options
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if {! [array exists sn_options]} {
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#invoke the binding
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uplevel \#0 [list $w invoke]
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}
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if {[winfo exists $w]} then {
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if {[$w cget -state] != "disabled"} then {
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$w configure -state normal
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}
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}
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# HOWEVER, if the pointer is still over the button, and it
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# is enabled, then raise it again.
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if {[string compare [winfo containing \
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[winfo pointerx $w] \
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[winfo pointery $w]] $w] == 0} {
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$w configure -relief raised
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}
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}
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}
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}
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# Set up toolbar bindings.
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proc TOOLBAR_maybe_init {} {
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global TOOLBAR_state
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if {! $TOOLBAR_state(initialized)} then {
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set TOOLBAR_state(initialized) 1
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# We can't put our bindings onto the widget (and then use "break"
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# to avoid the class bindings) because that interacts poorly with
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# balloon help.
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bind ToolbarButton <Enter> [list TOOLBAR_button_enter %W]
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bind ToolbarButton <Leave> [list TOOLBAR_button_leave %W]
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bind ToolbarButton <1> [list TOOLBAR_button_down %W]
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bind ToolbarButton <ButtonRelease-1> [list TOOLBAR_button_up %W]
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}
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}
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#Allows changing options of a toolbar button from the application
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#especially the relief value
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proc TOOLBAR_command {w args} {
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global TOOLBAR_state
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set len [llength $args]
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for {set i 0} {$i < $len} {incr i} {
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set cmd [lindex $args $i]
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switch -- $cmd {
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"relief" -
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"-relief" {
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incr i
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set TOOLBAR_state(relief) [lindex $args $i]
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$w configure $cmd [lindex $args $i]
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}
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"window" -
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"-window" {
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incr i
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set TOOLBAR_state(window) [lindex $args $i]
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}
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default {
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#normal widget options
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incr i
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$w configure $cmd [lindex $args $i]
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}
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}
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}
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}
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# Pass this proc a frame and some children of the frame. It will put
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# the children into the frame so that they look like a toolbar.
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# Children are added in the order they are listed. If a child's name
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# is "-", then the appropriate type of separator is entered instead.
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# If a child's name is "--" then all remaining children will be placed
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# on the right side of the window.
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#
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# For non-flat mode, each button must display an image, and this image
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# must have a twin. The primary (raised) image's name must end in
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# "u", and the depressed image's name must end in "d". Eg the edit
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# images should be called "editu" and "editd". There's no doubt that
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# this is a hack.
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#
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# If you want to add a button that doesn't have an image (or whose
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# image doesn't have a twin), you must wrap it in a frame.
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#
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# FIXME: someday, write a `toolbar button' widget that handles the
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# image mess invisibly.
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proc standard_toolbar {frame args} {
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global tcl_platform
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# For now, there are two different layouts, depending on which kind
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# of icons we're using. This is just a test feature and will be
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# eliminated once we decide on an icon style.
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TOOLBAR_maybe_init
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# We reserve column 0 for some padding.
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set column 1
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if {$tcl_platform(platform) == "windows"} then {
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# See below to understand this.
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set row 1
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} else {
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set row 0
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}
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# This is set if we see "--" and thus the filling happens in the
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# center.
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set center_fill 0
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set sticky w
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foreach button $args {
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grid columnconfigure $frame $column -weight 0
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if {$button == "-"} then {
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# A separator.
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set f [frame $frame.[gensym] -borderwidth 1 -width 2 -relief sunken]
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grid $f -row $row -column $column -sticky ns${sticky} -padx 4
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} elseif {$button == "--"} then {
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# Everything after this is put on the right. We do this by
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# adding a column that sucks up all the space.
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set center_fill 1
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set sticky e
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grid columnconfigure $frame $column -weight 1 -minsize 7
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} elseif {[winfo class $button] != "Button"} then {
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# Something other than a button. Just put it into the frame.
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grid $button -row $row -column $column -sticky $sticky -pady 2
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} else {
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# A button.
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# FIXME: does Windows allow focus traversal? For now we're
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# just turning it off.
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$button configure -takefocus 0 -highlightthickness 0 \
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-relief flat -borderwidth 1
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grid $button -row $row -column $column -sticky $sticky -pady 2
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# Make sure the button acts the way we want, not the default Tk
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# way.
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set index [lsearch -exact [bindtags $button] Button]
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bindtags $button [lreplace [bindtags $button] $index $index \
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ToolbarButton]
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}
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incr column
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}
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# On Unix, it looks a little more natural to have a raised toolbar.
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# On Windows the toolbar is flat, but there is a horizontal
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# separator between the toolbar and the menubar. On both platforms
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# we provide some space to the left of the leftmost widget.
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grid columnconfigure $frame 0 -minsize 7 -weight 0
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if {$tcl_platform(platform) == "windows"} then {
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$frame configure -borderwidth 0 -relief flat
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set name $frame.[gensym]
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frame $name -height 2 -borderwidth 1 -relief sunken
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grid $name -row 0 -column 0 -columnspan $column -pady 1 -sticky ew
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} else {
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$frame configure -borderwidth 2 -relief raised
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}
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if {! $center_fill} then {
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# The rightmost column sucks up the extra space.
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incr column -1
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grid columnconfigure $frame $column -weight 1
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}
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}
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