# test_axis.tcl --
#     Test the drawing of the axis: nice rounded values?
#     And vertical text to right axis?
#
#     NOTE:
#     Negative values require floor() instead of ceil()!
#
#     NOTE:
#     Problem with right axis!
#
#     TODO:
#     Floor and Ceil and less stringent check for bounds!
#

set base [file dirname [file dirname [file dirname [file normalize [info script]]]]]

source "$base/modules/plotchart/plotchart.tcl"
source "$base/modules/crosshair/crosshair.tcl"

package require Plotchart

grid [canvas .c1] [canvas .c2]
grid [canvas .c3] [canvas .c4]

#
# Create the plots
#

set plot_axes [list { 0.12  10.4  1.0} {-0.12  10.4  2.5} \
		    {10.12 -10.4 -2.0} {-5.1   -4.5  0.1} \
	            {-0.12  10.4  2.5} { 0.12  10.4  1.0} \
		    {-5.1   -4.5  0.1} {10.12 -10.4 -2.0}]
set i 1
foreach {x y} $plot_axes {
    set p($i) [::Plotchart::createXYPlot .c${i} $x $y ]
    incr i
}


set p(5) [::Plotchart::createRightAxis $p(2) {-5.99 -4.5 0.1}]

$p(2) plot data  10.0 -5.0
$p(2) plot data -10.0 -5.0
$p(5) dataconfig data -colour green
$p(5) plot data  10.0 -4.7
$p(5) plot data -10.0 -4.7
$p(2) vtext "my_changes"
$p(5) vtext "Data"

# Adding crosshairs to the plots
set i 1
array set color {1 blue 2 red 3 green 4 black}
foreach {x y} $plot_axes {
    .c${i} configure -cursor tcross
    crosshair::crosshair .c$i -dash {.} -fill $color($i)
    crosshair::track on  .c$i put_coords
    set bbox_ll [::Plotchart::coordsToPixel [$p($i) canvas] [lindex $x 0] [lindex $y 0]]
    set bbox_ur [::Plotchart::coordsToPixel [$p($i) canvas] [lindex $x 1] [lindex $y 1]]

    #--- testing coordinate mixed up
    if {$i==0} {
	set bbox [concat $bbox_ll $bbox_ur]
    } elseif {$i==1} {
	set bbox [list [lindex $bbox_ur 0] [lindex $bbox_ll 1] [lindex $bbox_ll 0] [lindex $bbox_ur 1]]
    } elseif {$i==2} {
	set bbox [list [lindex $bbox_ll 0] [lindex $bbox_ur 1] [lindex $bbox_ur 0] [lindex $bbox_ll 1]]
    } else {
	set bbox [concat $bbox_ur $bbox_ll]
    }
    crosshair::bbox_add .c$i "$bbox"

    puts "plot $i ==> bbox== $bbox  color = $color($i)"

    incr i
}


proc put_coords {a b c d e f g} {
    set pcoords [::Plotchart::pixelToCoords $a $b $c]
    set pcoord_x [lindex $pcoords 0]
    set pcoord_y [lindex $pcoords 1]
    puts "Canvas=$a Canvas_Coords=($b $c)  PlotChart_plot_coords=([format "%.2f %.2f" $pcoord_x $pcoord_y])"
}

catch { console show }

# test_txplot.tcl --
#     Test the -box options for time-x-plots

set base [file dirname [file dirname [file dirname [file normalize [info script]]]]]

source "$base/modules/plotchart/plotchart.tcl"
source "$base/modules/crosshair/crosshair.tcl"

package require Plotchart

pack [canvas .c -width 600 -height 410 -bg white]

::Plotchart::plotstyle configure default xyplot bottomaxis subtextcolor blue
::Plotchart::plotstyle configure default xyplot bottomaxis font         "Helvetica 14"
::Plotchart::plotstyle configure default xyplot bottomaxis subtextfont  "Helvetica 12 bold"
::Plotchart::plotstyle configure default xyplot leftaxis   font         "Helvetica 14"
::Plotchart::plotstyle configure default xyplot leftaxis   subtextfont  "Helvetica 12 bold"
::Plotchart::plotstyle configure default xyplot leftaxis   subtextcolor red
::Plotchart::plotstyle configure default xyplot leftaxis   usesubtext   1

set p1 [::Plotchart::createXYPlot .c {0 100 30} {0 20 5} -box {0 0 400 200}]
set p2 [::Plotchart::createXYPlot .c {0 100 30} {0 20 5} -box {100 210 400 200}]

#.c create rectangle 0 210 400 410

$p1 plot data 0 10
$p1 plot data 100 15

$p1 xtext    Aha
#$p1 xsubtext "1, 2, 3"
$p1 ytext    "Same spot?"

$p2 plot data 0 10
$p2 plot data 100 15
$p2 ytext    "Higher up"
#$p2 ysubtext "Lower down"
$p2 vtext    "To the left"
#$p2 vsubtext "To the right"


.c configure -cursor tcross
crosshair::crosshair .c -dash {.} -fill blue
#crosshair::track on  .c put_coords

set bbox_ll [::Plotchart::coordsToPixel [$p1 canvas] 0 0 ]
set bbox_ur [::Plotchart::coordsToPixel [$p1 canvas] 100 20]
set bbox_p1 [concat $bbox_ll $bbox_ur]
crosshair::bbox_add .c "$bbox_p1"
set bbox_ll [::Plotchart::coordsToPixel [$p2 canvas] 0 0 ]
set bbox_ur [::Plotchart::coordsToPixel [$p2 canvas] 100 20]
set bbox_p2 [concat $bbox_ll $bbox_ur]
crosshair::bbox_add .c "$bbox_p2"

catch { console show }

2013-02-25  Andreas Kupries  <andreas_kupries@users.sourceforge.net>

	* crosshair.tcl: [Bug 3603562]: Tweaks and fixes for robustness.
	* ../../examples/canvas/crosshair_for_axes.tcl: Examples of bounded
	* ../../examples/canvas/crosshair_for_multixyplot.tcl: crosshairs.

2013-02-13  Andreas Kupries  <andreas_kupries@users.sourceforge.net>

	* crosshair.tcl: [Bug 3603562]: Allow the confinement of the
	* crosshair.man: crosshairs to one or more rectangular bounding
	* pkgIndex.tcl: boxes. Bumped version to 1.1.

2009-01-21  Andreas Kupries  <andreas_kupries@users.sourceforge.net>

# crosshair.tcl -
#
# Kevin's mouse-tracking crosshair in Tk's canvas widget.
#
# This package displays a mouse-tracking crosshair in the canvas widget.
#
# Copyright (c) 2003 by Kevin B. Kenny. All rights reserved.
# Redistribution permitted under the terms of the Tcl License.

#
# Copyright (c) 2008 Andreas Kupries. Added ability to provide the tracking
#               information to external users.
#
# Copyright (c) 2013 Frank Gover, Andreas Kupries. Added ability to
#               bound the crosshairs to an area of the canvas. Useful
#               for plots.

proc ::crosshair::bbox_add { w bbox } {
    variable config
    if { ![info exists config($w)] } {
	return -code error "no crosshairs in $w"
    }
    array set opts $config($w)

    # Sort the coordinates and make sure the bbox is in format
    # "lower-left upper-right". The larger Y is on the lower left and
    # the larger X is on the upper right.

    set x_coords [lsort -real -increasing [list [lindex $bbox 0] [lindex $bbox 2]]]
    set y_coords [lsort -real -decreasing [list [lindex $bbox 1] [lindex $bbox 3]]]

    set bbox [list \
		  [lindex $x_coords 0] [lindex $y_coords 0] \
		  [lindex $x_coords 1] [lindex $y_coords 1]]

    lappend opts(bbox) $bbox
    set config($w) [array get opts]

    set token bbox$w/[llength $opts(bbox)]

    return $token
}

#----------------------------------------------------------------------
#
# ::crosshair::bbox_remove --
#

    set llx [lindex $box 0]
    set lly [lindex $box 1]
    set urx [lindex $box 2]
    set ury [lindex $box 3]

    #puts \tTEST($x,$y):$llx,$lly,$urx,$ury:[expr {($x < $llx) || ($x > $urx) || ($y < $lly) || ($y > $ury)}]

    # Test each edge. Note that the border lines are considered as "outside".

    expr {($x <= $llx) ||
	  ($x >= $urx) ||
	  ($y >= $lly) ||
	  ($y <= $ury)}
}

#----------------------------------------------------------------------
#
# ::crosshair::Move --
#
#       Moves the crosshairs in a camvas