# twind.tcl --
#
# This demonstration script creates a text widget with a bunch of
# embedded windows.

if {![info exists widgetDemo]} {
    error "This script should be run from the \"widget\" demo."
}

package require Tk

# Make an Aqua button's fill color match its parent's background
proc blend {bt} {
    if {[tk windowingsystem] eq "aqua"} {
	$bt configure -highlightbackground [[winfo parent $bt] cget -background]
    }
    return $bt
}

set w .twind
catch {destroy $w}
toplevel $w
wm title $w "Text Demonstration - Embedded Windows and Other Features"
wm iconname $w "Embedded Windows"
positionWindow $w

$t insert end "scrolling in all directions is provided.\n\n"

$t insert end "A text widget can contain other widgets embedded "
$t insert end "it.  These are called \"embedded windows\", "
$t insert end "and they can consist of arbitrary widgets.  "
$t insert end "For example, here are two embedded button "
$t insert end "widgets.  You can click on the first button to "
$t window create end -window $t.on
$t window create end -window [blend $t.on]
$t insert end " horizontal scrolling, which also turns off "
$t insert end "word wrapping.  Or, you can click on the second "
$t insert end "button to\n"
$t window create end -window $t.off
$t window create end -window [blend $t.off]
$t insert end " horizontal scrolling and turn back on word wrapping.\n\n"

$t insert end "Or, here is another example.  If you "
$t window create end -create {
    button %W.click -text "Click Here" -command "textWindPlot %W" \
	    -cursor top_left_arrow}
	-cursor top_left_arrow
    blend %W.click
}

$t insert end " a canvas displaying an x-y plot will appear right here."
$t mark set plot insert
$t mark gravity plot left
$t insert end "  You can drag the data points around with the mouse, "
$t insert end "or you can click here to "
$t window create end -create {
    button %W.delete -text "Delete" -command "textWindDel %W" \
	    -cursor top_left_arrow
	-cursor top_left_arrow
    blend %W.delete
}
$t insert end " the plot again.\n\n"

$t insert end "You can also create multiple text widgets each of which "
$t insert end "display the same underlying text. Click this button to "
$t window create end \
  -create {button %W.peer -text "Make A Peer" -command "textMakePeer %W" \
  -cursor top_left_arrow} -padx 3
	       -cursor top_left_arrow
      blend %W.peer} -padx 3
$t insert end " widget.  Notice how peer widgets can have different "
$t insert end "font settings, and by default contain all the images "
$t insert end "of the 'parent', but that the embedded windows, "
$t insert end "such as buttons may not appear in the peer.  To ensure "
$t insert end "that embedded windows appear in all peers you can set the "
$t insert end "'-create' option to a script or a string containing %W.  "
$t insert end "(The plot above and the 'Make A Peer' button are "
$t insert end "designed to show up in all peers.)  A good use of "
$t insert end "peers is for "
$t window create end \
  -create {button %W.split -text "Split Windows" -command "textSplitWindow %W" \
  -cursor top_left_arrow} -padx 3
	       -cursor top_left_arrow
      blend %W.split} -padx 3
$t insert end " \n\n"

$t insert end "Users of previous versions of Tk will also be interested "
$t insert end "to note that now cursor movement is now by visual line by "
$t insert end "default, and that all scrolling of this widget is by pixel.\n\n"

$t insert end "You may also find it useful to put embedded windows in "

$t window create end -window $t.toggle -padx 3 -pady 2
set i 1
foreach color {AntiqueWhite3 Bisque1 Bisque2 Bisque3 Bisque4
	SlateBlue3 RoyalBlue1 SteelBlue2 DeepSkyBlue3 LightBlue1
	DarkSlateGray1 Aquamarine2 DarkSeaGreen2 SeaGreen1
	Yellow1 IndianRed1 IndianRed2 Tan1 Tan4} {
    button $t.color$i -text $color -cursor top_left_arrow -command \
	    "$t configure -bg $color"
    $t window create end -window $t.color$i -padx 3 -pady 2
	    "changeBg $t $color"
    $t window create end -window [blend $t.color$i] -padx 3 -pady 2
    incr i
}
$t tag add buttons $t.default end
$t tag add buttons [blend $t.default] end

button $t.bigB -text "Big borders" -command "textWindBigB $t" \
  -cursor top_left_arrow
button $t.smallB -text "Small borders" -command "textWindSmallB $t" \
  -cursor top_left_arrow
button $t.bigH -text "Big highlight" -command "textWindBigH $t" \
  -cursor top_left_arrow
button $t.smallH -text "Small highlight" -command "textWindSmallH $t" \
  -cursor top_left_arrow
button $t.bigP -text "Big pad" -command "textWindBigP $t" \
  -cursor top_left_arrow
button $t.smallP -text "Small pad" -command "textWindSmallP $t" \
  -cursor top_left_arrow

set text_normal(border) [$t cget -borderwidth]
set text_normal(highlight) [$t cget -highlightthickness]
set text_normal(pad) [$t cget -padx]

$t insert end "\nYou can also change the usual border width and "
$t insert end "highlightthickness and padding.\n"
$t window create end -window $t.bigB
$t window create end -window $t.smallB
$t window create end -window $t.bigH
$t window create end -window $t.smallH
$t window create end -window $t.bigP
$t window create end -window $t.smallP
$t window create end -window [blend $t.bigB]
$t window create end -window [blend $t.smallB]
$t window create end -window [blend $t.bigH]
$t window create end -window [blend $t.smallH]
$t window create end -window [blend $t.bigP]
$t window create end -window [blend $t.smallP]

$t insert end "\n\nFinally, images fit comfortably in text widgets too:"

$t image create end -image \
    [image create photo -file [file join $tk_demoDirectory images ouster.png]]

proc textWindBigB w {

proc textWindSmallH w {
    $w configure -highlightthickness $::text_normal(highlight)
}

proc textWindSmallP w {
    $w configure -padx $::text_normal(pad) -pady $::text_normal(pad)
}


proc textWindOn w {
    catch {destroy $w.scroll2}
    set t $w.f.text
    ttk::scrollbar $w.scroll2 -orient horizontal -command "$t xview"
    pack $w.scroll2 -after $w.buttons -side bottom -fill x
    $t configure -xscrollcommand "$w.scroll2 set" -wrap none

	$t delete $t.c
	while {[string first [$t get plot] " \t\n"] >= 0} {
	    $t delete plot
	}
	$t insert plot "  "
    }
}

proc changeBg {t c} {
    $t configure -background $c
    if {[tk windowingsystem] eq "aqua"} {
	foreach b [$t window names] {
	    if {[winfo class $b] eq "Button"} {
		$b configure -highlightbackground $c
	    }
	}
    }
}

proc embDefBg t {
    $t configure -background [lindex [$t configure -background] 3]
    set bg [lindex [$t configure -background] 3]
    changeBg $t $bg 
}

proc textMakePeer {parent} {
    set n 1
    while {[winfo exists .peer$n]} { incr n }
    set w [toplevel .peer$n]
    wm title $w "Text Peer #$n"

 * TROUGH -		Background color for troughs in scales and scrollbars.
 * INDICATOR -		Color for indicator when button is selected.
 * DISABLED -		Foreground color when widget is disabled.
 */

#define BLACK			"Black"
#define WHITE			"White"
#define NORMAL_BG		"systemTextBackgroundColor"
#define NORMAL_BG		"systemWindowBackgroundColor"
#define TEXT_BG                 "systemTextBackgroundColor"
#define NORMAL_FG		"systemTextColor"
#define ACTIVE_BG		"systemTextBackgroundColor"
#define ACTIVE_BG		"systemWindowBackgroundColor"
#define ACTIVE_FG		"systemTextColor"
#define SELECT_BG		"systemSelectedTextBackgroundColor"
#define SELECT_FG		"systemSelectedTextColor"
#define INACTIVE_SELECT_BG	"systemSelectedTextBackgroundColor"
#define TROUGH			"#c3c3c3"
#define INDICATOR		"#b03060"
#define DISABLED		"#a3a3a3"

 */

#define MAC_OSX_FOCUS_WIDTH		3
#define MAC_OSX_ENTRY_BORDER		2
#define MAC_OSX_ENTRY_RELIEF		TK_RELIEF_SUNKEN
#define MAC_OSX_ENTRY_SELECT_RELIEF	TK_RELIEF_FLAT

#define DEF_ENTRY_BG_COLOR		NORMAL_BG
#define DEF_ENTRY_BG_COLOR		TEXT_BG
#define DEF_ENTRY_BG_MONO		WHITE
#define DEF_ENTRY_BORDER_WIDTH		"2"
#define DEF_ENTRY_CURSOR		"xterm"
#define DEF_ENTRY_DISABLED_BG_COLOR	NORMAL_BG
#define DEF_ENTRY_DISABLED_BG_MONO	WHITE
#define DEF_ENTRY_DISABLED_FG		DISABLED
#define DEF_ENTRY_EXPORT_SELECTION	"1"

#define DEF_LABELFRAME_LABELANCHOR	"nw"

/*
 * Defaults for listboxes:
 */

#define DEF_LISTBOX_ACTIVE_STYLE	"dotbox"
#define DEF_LISTBOX_BG_COLOR		NORMAL_BG
#define DEF_LISTBOX_BG_COLOR		TEXT_BG
#define DEF_LISTBOX_BG_MONO		WHITE
#define DEF_LISTBOX_BORDER_WIDTH	"1"
#define DEF_LISTBOX_CURSOR		""
#define DEF_LISTBOX_DISABLED_FG		DISABLED
#define DEF_LISTBOX_EXPORT_SELECTION	"1"
#define DEF_LISTBOX_FONT		"TkTextFont"
#define DEF_LISTBOX_FG			NORMAL_FG

#define DEF_SCROLLBAR_WIDTH		"15"

/*
 * Defaults for texts:
 */

#define DEF_TEXT_AUTO_SEPARATORS	"1"
#define DEF_TEXT_BG_COLOR		NORMAL_BG
#define DEF_TEXT_BG_COLOR		TEXT_BG
#define DEF_TEXT_BG_MONO		WHITE
#define DEF_TEXT_BLOCK_CURSOR		"0"
#define DEF_TEXT_BORDER_WIDTH		"0"
#define DEF_TEXT_CURSOR			"xterm"
#define DEF_TEXT_FG			NORMAL_FG
#define DEF_TEXT_EXPORT_SELECTION	"1"
#define DEF_TEXT_FONT			"TkFixedFont"