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author | William Joye <wjoye@cfa.harvard.edu> | 2016-10-18 17:31:55 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2016-10-18 17:31:55 (GMT) |
commit | 39e34335fb6eb6eaf2b7ee51ccf172006dd46fbb (patch) | |
tree | 8e5374666c7f0b3017176ec9d6e6b6eae0dcabac /tk8.6/library/clrpick.tcl | |
parent | 066971b1e6e77991d9161bb0216a63ba94ea04f9 (diff) | |
parent | 6b095f3c8521ca7215e6ff5dcbada52b197ef7d0 (diff) | |
download | blt-39e34335fb6eb6eaf2b7ee51ccf172006dd46fbb.zip blt-39e34335fb6eb6eaf2b7ee51ccf172006dd46fbb.tar.gz blt-39e34335fb6eb6eaf2b7ee51ccf172006dd46fbb.tar.bz2 |
Merge commit '6b095f3c8521ca7215e6ff5dcbada52b197ef7d0' as 'tk8.6'
Diffstat (limited to 'tk8.6/library/clrpick.tcl')
-rw-r--r-- | tk8.6/library/clrpick.tcl | 695 |
1 files changed, 695 insertions, 0 deletions
diff --git a/tk8.6/library/clrpick.tcl b/tk8.6/library/clrpick.tcl new file mode 100644 index 0000000..600be16 --- /dev/null +++ b/tk8.6/library/clrpick.tcl @@ -0,0 +1,695 @@ +# clrpick.tcl -- +# +# Color selection dialog for platforms that do not support a +# standard color selection dialog. +# +# Copyright (c) 1996 Sun Microsystems, Inc. +# +# See the file "license.terms" for information on usage and redistribution +# of this file, and for a DISCLAIMER OF ALL WARRANTIES. +# +# ToDo: +# +# (1): Find out how many free colors are left in the colormap and +# don't allocate too many colors. +# (2): Implement HSV color selection. +# + +# Make sure namespaces exist +namespace eval ::tk {} +namespace eval ::tk::dialog {} +namespace eval ::tk::dialog::color { + namespace import ::tk::msgcat::* +} + +# ::tk::dialog::color:: -- +# +# Create a color dialog and let the user choose a color. This function +# should not be called directly. It is called by the tk_chooseColor +# function when a native color selector widget does not exist +# +proc ::tk::dialog::color:: {args} { + variable ::tk::Priv + set dataName __tk__color + upvar ::tk::dialog::color::$dataName data + set w .$dataName + + # The lines variables track the start and end indices of the line + # elements in the colorbar canvases. + set data(lines,red,start) 0 + set data(lines,red,last) -1 + set data(lines,green,start) 0 + set data(lines,green,last) -1 + set data(lines,blue,start) 0 + set data(lines,blue,last) -1 + + # This is the actual number of lines that are drawn in each color strip. + # Note that the bars may be of any width. + # However, NUM_COLORBARS must be a number that evenly divides 256. + # Such as 256, 128, 64, etc. + set data(NUM_COLORBARS) 16 + + # BARS_WIDTH is the number of pixels wide the color bar portion of the + # canvas is. This number must be a multiple of NUM_COLORBARS + set data(BARS_WIDTH) 160 + + # PLGN_WIDTH is the number of pixels wide of the triangular selection + # polygon. This also results in the definition of the padding on the + # left and right sides which is half of PLGN_WIDTH. Make this number even. + set data(PLGN_HEIGHT) 10 + + # PLGN_HEIGHT is the height of the selection polygon and the height of the + # selection rectangle at the bottom of the color bar. No restrictions. + set data(PLGN_WIDTH) 10 + + Config $dataName $args + InitValues $dataName + + set sc [winfo screen $data(-parent)] + set winExists [winfo exists $w] + if {!$winExists || $sc ne [winfo screen $w]} { + if {$winExists} { + destroy $w + } + toplevel $w -class TkColorDialog -screen $sc + if {[tk windowingsystem] eq "x11"} {wm attributes $w -type dialog} + BuildDialog $w + } + + # Dialog boxes should be transient with respect to their parent, + # so that they will always stay on top of their parent window. However, + # some window managers will create the window as withdrawn if the parent + # window is withdrawn or iconified. Combined with the grab we put on the + # window, this can hang the entire application. Therefore we only make + # the dialog transient if the parent is viewable. + + if {[winfo viewable [winfo toplevel $data(-parent)]] } { + wm transient $w $data(-parent) + } + + # 5. Withdraw the window, then update all the geometry information + # so we know how big it wants to be, then center the window in the + # display (Motif style) and de-iconify it. + + ::tk::PlaceWindow $w widget $data(-parent) + wm title $w $data(-title) + + # 6. Set a grab and claim the focus too. + + ::tk::SetFocusGrab $w $data(okBtn) + + # 7. Wait for the user to respond, then restore the focus and + # return the index of the selected button. Restore the focus + # before deleting the window, since otherwise the window manager + # may take the focus away so we can't redirect it. Finally, + # restore any grab that was in effect. + + vwait ::tk::Priv(selectColor) + set result $Priv(selectColor) + ::tk::RestoreFocusGrab $w $data(okBtn) + unset data + + return $result +} + +# ::tk::dialog::color::InitValues -- +# +# Get called during initialization or when user resets NUM_COLORBARS +# +proc ::tk::dialog::color::InitValues {dataName} { + upvar ::tk::dialog::color::$dataName data + + # IntensityIncr is the difference in color intensity between a colorbar + # and its neighbors. + set data(intensityIncr) [expr {256 / $data(NUM_COLORBARS)}] + + # ColorbarWidth is the width of each colorbar + set data(colorbarWidth) [expr {$data(BARS_WIDTH) / $data(NUM_COLORBARS)}] + + # Indent is the width of the space at the left and right side of the + # colorbar. It is always half the selector polygon width, because the + # polygon extends into the space. + set data(indent) [expr {$data(PLGN_WIDTH) / 2}] + + set data(colorPad) 2 + set data(selPad) [expr {$data(PLGN_WIDTH) / 2}] + + # + # minX is the x coordinate of the first colorbar + # + set data(minX) $data(indent) + + # + # maxX is the x coordinate of the last colorbar + # + set data(maxX) [expr {$data(BARS_WIDTH) + $data(indent)-1}] + + # + # canvasWidth is the width of the entire canvas, including the indents + # + set data(canvasWidth) [expr {$data(BARS_WIDTH) + $data(PLGN_WIDTH)}] + + # Set the initial color, specified by -initialcolor, or the + # color chosen by the user the last time. + set data(selection) $data(-initialcolor) + set data(finalColor) $data(-initialcolor) + set rgb [winfo rgb . $data(selection)] + + set data(red,intensity) [expr {[lindex $rgb 0]/0x100}] + set data(green,intensity) [expr {[lindex $rgb 1]/0x100}] + set data(blue,intensity) [expr {[lindex $rgb 2]/0x100}] +} + +# ::tk::dialog::color::Config -- +# +# Parses the command line arguments to tk_chooseColor +# +proc ::tk::dialog::color::Config {dataName argList} { + variable ::tk::Priv + upvar ::tk::dialog::color::$dataName data + + # 1: the configuration specs + # + if {[info exists Priv(selectColor)] && $Priv(selectColor) ne ""} { + set defaultColor $Priv(selectColor) + } else { + set defaultColor [. cget -background] + } + + set specs [list \ + [list -initialcolor "" "" $defaultColor] \ + [list -parent "" "" "."] \ + [list -title "" "" [mc "Color"]] \ + ] + + # 2: parse the arguments + # + tclParseConfigSpec ::tk::dialog::color::$dataName $specs "" $argList + + if {$data(-title) eq ""} { + set data(-title) " " + } + if {[catch {winfo rgb . $data(-initialcolor)} err]} { + return -code error -errorcode [list TK LOOKUP COLOR $data(-initialcolor)] \ + $err + } + + if {![winfo exists $data(-parent)]} { + return -code error -errorcode [list TK LOOKUP WINDOW $data(-parent)] \ + "bad window path name \"$data(-parent)\"" + } +} + +# ::tk::dialog::color::BuildDialog -- +# +# Build the dialog. +# +proc ::tk::dialog::color::BuildDialog {w} { + upvar ::tk::dialog::color::[winfo name $w] data + + # TopFrame contains the color strips and the color selection + # + set topFrame [frame $w.top -relief raised -bd 1] + + # StripsFrame contains the colorstrips and the individual RGB entries + set stripsFrame [frame $topFrame.colorStrip] + + set maxWidth [::tk::mcmaxamp &Red &Green &Blue] + set maxWidth [expr {$maxWidth<6 ? 6 : $maxWidth}] + set colorList { + red "&Red" + green "&Green" + blue "&Blue" + } + foreach {color l} $colorList { + # each f frame contains an [R|G|B] entry and the equiv. color strip. + set f [frame $stripsFrame.$color] + + # The box frame contains the label and entry widget for an [R|G|B] + set box [frame $f.box] + + ::tk::AmpWidget label $box.label -text "[mc $l]:" \ + -width $maxWidth -anchor ne + bind $box.label <<AltUnderlined>> [list focus $box.entry] + + entry $box.entry -textvariable \ + ::tk::dialog::color::[winfo name $w]($color,intensity) \ + -width 4 + pack $box.label -side left -fill y -padx 2 -pady 3 + pack $box.entry -side left -anchor n -pady 0 + pack $box -side left -fill both + + set height [expr { + [winfo reqheight $box.entry] - + 2*([$box.entry cget -highlightthickness] + [$box.entry cget -bd]) + }] + + canvas $f.color -height $height \ + -width $data(BARS_WIDTH) -relief sunken -bd 2 + canvas $f.sel -height $data(PLGN_HEIGHT) \ + -width $data(canvasWidth) -highlightthickness 0 + pack $f.color -expand yes -fill both + pack $f.sel -expand yes -fill both + + pack $f -side top -fill x -padx 0 -pady 2 + + set data($color,entry) $box.entry + set data($color,col) $f.color + set data($color,sel) $f.sel + + bind $data($color,col) <Configure> \ + [list tk::dialog::color::DrawColorScale $w $color 1] + bind $data($color,col) <Enter> \ + [list tk::dialog::color::EnterColorBar $w $color] + bind $data($color,col) <Leave> \ + [list tk::dialog::color::LeaveColorBar $w $color] + + bind $data($color,sel) <Enter> \ + [list tk::dialog::color::EnterColorBar $w $color] + bind $data($color,sel) <Leave> \ + [list tk::dialog::color::LeaveColorBar $w $color] + + bind $box.entry <Return> [list tk::dialog::color::HandleRGBEntry $w] + } + + pack $stripsFrame -side left -fill both -padx 4 -pady 10 + + # The selFrame contains a frame that demonstrates the currently + # selected color + # + set selFrame [frame $topFrame.sel] + set lab [::tk::AmpWidget label $selFrame.lab \ + -text [mc "&Selection:"] -anchor sw] + set ent [entry $selFrame.ent \ + -textvariable ::tk::dialog::color::[winfo name $w](selection) \ + -width 16] + set f1 [frame $selFrame.f1 -relief sunken -bd 2] + set data(finalCanvas) [frame $f1.demo -bd 0 -width 100 -height 70] + + pack $lab $ent -side top -fill x -padx 4 -pady 2 + pack $f1 -expand yes -anchor nw -fill both -padx 6 -pady 10 + pack $data(finalCanvas) -expand yes -fill both + + bind $ent <Return> [list tk::dialog::color::HandleSelEntry $w] + + pack $selFrame -side left -fill none -anchor nw + pack $topFrame -side top -expand yes -fill both -anchor nw + + # the botFrame frame contains the buttons + # + set botFrame [frame $w.bot -relief raised -bd 1] + + ::tk::AmpWidget button $botFrame.ok -text [mc "&OK"] \ + -command [list tk::dialog::color::OkCmd $w] + ::tk::AmpWidget button $botFrame.cancel -text [mc "&Cancel"] \ + -command [list tk::dialog::color::CancelCmd $w] + + set data(okBtn) $botFrame.ok + set data(cancelBtn) $botFrame.cancel + + grid x $botFrame.ok x $botFrame.cancel x -sticky ew + grid configure $botFrame.ok $botFrame.cancel -padx 10 -pady 10 + grid columnconfigure $botFrame {0 4} -weight 1 -uniform space + grid columnconfigure $botFrame {1 3} -weight 1 -uniform button + grid columnconfigure $botFrame 2 -weight 2 -uniform space + pack $botFrame -side bottom -fill x + + # Accelerator bindings + bind $lab <<AltUnderlined>> [list focus $ent] + bind $w <KeyPress-Escape> [list tk::ButtonInvoke $data(cancelBtn)] + bind $w <Alt-Key> [list tk::AltKeyInDialog $w %A] + + wm protocol $w WM_DELETE_WINDOW [list tk::dialog::color::CancelCmd $w] + bind $lab <Destroy> [list tk::dialog::color::CancelCmd $w] +} + +# ::tk::dialog::color::SetRGBValue -- +# +# Sets the current selection of the dialog box +# +proc ::tk::dialog::color::SetRGBValue {w color} { + upvar ::tk::dialog::color::[winfo name $w] data + + set data(red,intensity) [lindex $color 0] + set data(green,intensity) [lindex $color 1] + set data(blue,intensity) [lindex $color 2] + + RedrawColorBars $w all + + # Now compute the new x value of each colorbars pointer polygon + foreach color {red green blue} { + set x [RgbToX $w $data($color,intensity)] + MoveSelector $w $data($color,sel) $color $x 0 + } +} + +# ::tk::dialog::color::XToRgb -- +# +# Converts a screen coordinate to intensity +# +proc ::tk::dialog::color::XToRgb {w x} { + upvar ::tk::dialog::color::[winfo name $w] data + + set x [expr {($x * $data(intensityIncr))/ $data(colorbarWidth)}] + if {$x > 255} { + set x 255 + } + return $x +} + +# ::tk::dialog::color::RgbToX +# +# Converts an intensity to screen coordinate. +# +proc ::tk::dialog::color::RgbToX {w color} { + upvar ::tk::dialog::color::[winfo name $w] data + + return [expr {($color * $data(colorbarWidth)/ $data(intensityIncr))}] +} + +# ::tk::dialog::color::DrawColorScale -- +# +# Draw color scale is called whenever the size of one of the color +# scale canvases is changed. +# +proc ::tk::dialog::color::DrawColorScale {w c {create 0}} { + upvar ::tk::dialog::color::[winfo name $w] data + + # col: color bar canvas + # sel: selector canvas + set col $data($c,col) + set sel $data($c,sel) + + # First handle the case that we are creating everything for the first time. + if {$create} { + # First remove all the lines that already exist. + if { $data(lines,$c,last) > $data(lines,$c,start)} { + for {set i $data(lines,$c,start)} \ + {$i <= $data(lines,$c,last)} {incr i} { + $sel delete $i + } + } + # Delete the selector if it exists + if {[info exists data($c,index)]} { + $sel delete $data($c,index) + } + + # Draw the selection polygons + CreateSelector $w $sel $c + $sel bind $data($c,index) <ButtonPress-1> \ + [list tk::dialog::color::StartMove $w $sel $c %x $data(selPad) 1] + $sel bind $data($c,index) <B1-Motion> \ + [list tk::dialog::color::MoveSelector $w $sel $c %x $data(selPad)] + $sel bind $data($c,index) <ButtonRelease-1> \ + [list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(selPad)] + + set height [winfo height $col] + # Create an invisible region under the colorstrip to catch mouse clicks + # that aren't on the selector. + set data($c,clickRegion) [$sel create rectangle 0 0 \ + $data(canvasWidth) $height -fill {} -outline {}] + + bind $col <ButtonPress-1> \ + [list tk::dialog::color::StartMove $w $sel $c %x $data(colorPad)] + bind $col <B1-Motion> \ + [list tk::dialog::color::MoveSelector $w $sel $c %x $data(colorPad)] + bind $col <ButtonRelease-1> \ + [list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(colorPad)] + + $sel bind $data($c,clickRegion) <ButtonPress-1> \ + [list tk::dialog::color::StartMove $w $sel $c %x $data(selPad)] + $sel bind $data($c,clickRegion) <B1-Motion> \ + [list tk::dialog::color::MoveSelector $w $sel $c %x $data(selPad)] + $sel bind $data($c,clickRegion) <ButtonRelease-1> \ + [list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(selPad)] + } else { + # l is the canvas index of the first colorbar. + set l $data(lines,$c,start) + } + + # Draw the color bars. + set highlightW [expr {[$col cget -highlightthickness] + [$col cget -bd]}] + for {set i 0} { $i < $data(NUM_COLORBARS)} { incr i} { + set intensity [expr {$i * $data(intensityIncr)}] + set startx [expr {$i * $data(colorbarWidth) + $highlightW}] + if {$c eq "red"} { + set color [format "#%02x%02x%02x" \ + $intensity $data(green,intensity) $data(blue,intensity)] + } elseif {$c eq "green"} { + set color [format "#%02x%02x%02x" \ + $data(red,intensity) $intensity $data(blue,intensity)] + } else { + set color [format "#%02x%02x%02x" \ + $data(red,intensity) $data(green,intensity) $intensity] + } + + if {$create} { + set index [$col create rect $startx $highlightW \ + [expr {$startx +$data(colorbarWidth)}] \ + [expr {[winfo height $col] + $highlightW}] \ + -fill $color -outline $color] + } else { + $col itemconfigure $l -fill $color -outline $color + incr l + } + } + $sel raise $data($c,index) + + if {$create} { + set data(lines,$c,last) $index + set data(lines,$c,start) [expr {$index - $data(NUM_COLORBARS) + 1}] + } + + RedrawFinalColor $w +} + +# ::tk::dialog::color::CreateSelector -- +# +# Creates and draws the selector polygon at the position +# $data($c,intensity). +# +proc ::tk::dialog::color::CreateSelector {w sel c } { + upvar ::tk::dialog::color::[winfo name $w] data + set data($c,index) [$sel create polygon \ + 0 $data(PLGN_HEIGHT) \ + $data(PLGN_WIDTH) $data(PLGN_HEIGHT) \ + $data(indent) 0] + set data($c,x) [RgbToX $w $data($c,intensity)] + $sel move $data($c,index) $data($c,x) 0 +} + +# ::tk::dialog::color::RedrawFinalColor +# +# Combines the intensities of the three colors into the final color +# +proc ::tk::dialog::color::RedrawFinalColor {w} { + upvar ::tk::dialog::color::[winfo name $w] data + + set color [format "#%02x%02x%02x" $data(red,intensity) \ + $data(green,intensity) $data(blue,intensity)] + + $data(finalCanvas) configure -bg $color + set data(finalColor) $color + set data(selection) $color + set data(finalRGB) [list \ + $data(red,intensity) \ + $data(green,intensity) \ + $data(blue,intensity)] +} + +# ::tk::dialog::color::RedrawColorBars -- +# +# Only redraws the colors on the color strips that were not manipulated. +# Params: color of colorstrip that changed. If color is not [red|green|blue] +# Then all colorstrips will be updated +# +proc ::tk::dialog::color::RedrawColorBars {w colorChanged} { + upvar ::tk::dialog::color::[winfo name $w] data + + switch $colorChanged { + red { + DrawColorScale $w green + DrawColorScale $w blue + } + green { + DrawColorScale $w red + DrawColorScale $w blue + } + blue { + DrawColorScale $w red + DrawColorScale $w green + } + default { + DrawColorScale $w red + DrawColorScale $w green + DrawColorScale $w blue + } + } + RedrawFinalColor $w +} + +#---------------------------------------------------------------------- +# Event handlers +#---------------------------------------------------------------------- + +# ::tk::dialog::color::StartMove -- +# +# Handles a mousedown button event over the selector polygon. +# Adds the bindings for moving the mouse while the button is +# pressed. Sets the binding for the button-release event. +# +# Params: sel is the selector canvas window, color is the color of the strip. +# +proc ::tk::dialog::color::StartMove {w sel color x delta {dontMove 0}} { + upvar ::tk::dialog::color::[winfo name $w] data + + if {!$dontMove} { + MoveSelector $w $sel $color $x $delta + } +} + +# ::tk::dialog::color::MoveSelector -- +# +# Moves the polygon selector so that its middle point has the same +# x value as the specified x. If x is outside the bounds [0,255], +# the selector is set to the closest endpoint. +# +# Params: sel is the selector canvas, c is [red|green|blue] +# x is a x-coordinate. +# +proc ::tk::dialog::color::MoveSelector {w sel color x delta} { + upvar ::tk::dialog::color::[winfo name $w] data + + incr x -$delta + + if { $x < 0 } { + set x 0 + } elseif { $x > $data(BARS_WIDTH)} { + set x $data(BARS_WIDTH) + } + set diff [expr {$x - $data($color,x)}] + $sel move $data($color,index) $diff 0 + set data($color,x) [expr {$data($color,x) + $diff}] + + # Return the x value that it was actually set at + return $x +} + +# ::tk::dialog::color::ReleaseMouse +# +# Removes mouse tracking bindings, updates the colorbars. +# +# Params: sel is the selector canvas, color is the color of the strip, +# x is the x-coord of the mouse. +# +proc ::tk::dialog::color::ReleaseMouse {w sel color x delta} { + upvar ::tk::dialog::color::[winfo name $w] data + + set x [MoveSelector $w $sel $color $x $delta] + + # Determine exactly what color we are looking at. + set data($color,intensity) [XToRgb $w $x] + + RedrawColorBars $w $color +} + +# ::tk::dialog::color::ResizeColorbars -- +# +# Completely redraws the colorbars, including resizing the +# colorstrips +# +proc ::tk::dialog::color::ResizeColorBars {w} { + upvar ::tk::dialog::color::[winfo name $w] data + + if { + ($data(BARS_WIDTH) < $data(NUM_COLORBARS)) || + (($data(BARS_WIDTH) % $data(NUM_COLORBARS)) != 0) + } then { + set data(BARS_WIDTH) $data(NUM_COLORBARS) + } + InitValues [winfo name $w] + foreach color {red green blue} { + $data($color,col) configure -width $data(canvasWidth) + DrawColorScale $w $color 1 + } +} + +# ::tk::dialog::color::HandleSelEntry -- +# +# Handles the return keypress event in the "Selection:" entry +# +proc ::tk::dialog::color::HandleSelEntry {w} { + upvar ::tk::dialog::color::[winfo name $w] data + + set text [string trim $data(selection)] + # Check to make sure that the color is valid + if {[catch {set color [winfo rgb . $text]} ]} { + set data(selection) $data(finalColor) + return + } + + set R [expr {[lindex $color 0]/0x100}] + set G [expr {[lindex $color 1]/0x100}] + set B [expr {[lindex $color 2]/0x100}] + + SetRGBValue $w "$R $G $B" + set data(selection) $text +} + +# ::tk::dialog::color::HandleRGBEntry -- +# +# Handles the return keypress event in the R, G or B entry +# +proc ::tk::dialog::color::HandleRGBEntry {w} { + upvar ::tk::dialog::color::[winfo name $w] data + + foreach c {red green blue} { + if {[catch { + set data($c,intensity) [expr {int($data($c,intensity))}] + }]} { + set data($c,intensity) 0 + } + + if {$data($c,intensity) < 0} { + set data($c,intensity) 0 + } + if {$data($c,intensity) > 255} { + set data($c,intensity) 255 + } + } + + SetRGBValue $w "$data(red,intensity) \ + $data(green,intensity) $data(blue,intensity)" +} + +# mouse cursor enters a color bar +# +proc ::tk::dialog::color::EnterColorBar {w color} { + upvar ::tk::dialog::color::[winfo name $w] data + + $data($color,sel) itemconfigure $data($color,index) -fill red +} + +# mouse leaves enters a color bar +# +proc ::tk::dialog::color::LeaveColorBar {w color} { + upvar ::tk::dialog::color::[winfo name $w] data + + $data($color,sel) itemconfigure $data($color,index) -fill black +} + +# user hits OK button +# +proc ::tk::dialog::color::OkCmd {w} { + variable ::tk::Priv + upvar ::tk::dialog::color::[winfo name $w] data + + set Priv(selectColor) $data(finalColor) +} + +# user hits Cancel button or destroys window +# +proc ::tk::dialog::color::CancelCmd {w} { + variable ::tk::Priv + set Priv(selectColor) "" +} |