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Diffstat (limited to 'demos/photoAlpha.tcl')
| -rw-r--r-- | demos/photoAlpha.tcl | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/demos/photoAlpha.tcl b/demos/photoAlpha.tcl deleted file mode 100644 index 631c767..0000000 --- a/demos/photoAlpha.tcl +++ /dev/null @@ -1,162 +0,0 @@ -# $Id$ -# this simple demo has been developped by P.Lecoanet <lecoanet@cena.fr> - -if {![info exists zincDemo]} { - error "This script should be run from the zinc-widget demo." -} - -namespace eval photoAlpha { - package require Img - - variable girl [image create photo -file [file join [demosPath] images photoAlpha.png]] - variable texture [image create photo -file [file join [demosPath] images stripped_texture.gif]] - - variable w .photoAlpha - catch {destroy $w} - toplevel $w - wm title $w "Zinc photo transparency Demonstration" - wm iconname $w photoAlpha - - variable defaultfont [font create -family Helvetica -size 16 -weight normal] - - grid [button $w.dismiss -text Dismiss -command "destroy $w"] -row 2 -column 0 -pady 10 - grid [button $w.code -text "See Code" -command "showCode $w"] -row 2 -column 1 -pady 10 - - - ########################################### - # Text zone - ####################### - #################### - - grid [text $w.text -relief sunken -borderwidth 2 -height 7] \ - -row 0 -column 0 -columnspan 2 -sticky ew - - $w.text insert end {This demo needs openGL for displaying the photo - with transparent pixels and for rescaling/rotating. - You can transform this png photo with your mouse: - Drag-Button 1 for moving the photo, - Drag-Button 2 for zooming the photo, - Drag-Button 3 for rotating the photo, - Shift-Drag-Button 1 for modifying the global photo transparency.} - - - ########################################### - # Zinc - ########################################## - if { $tcl_platform(platform) eq "unix" } { - zinc $w.zinc -width 350 -height 250 -render 1 -font $defaultfont \ - -borderwidth 3 -relief sunken -tile $texture - } else { - zinc $w.zinc -width 350 -height 250 -render 1 -font $defaultfont \ - -borderwidth 3 -relief sunken -backcolor \#898A8F - } - grid $w.zinc -row 1 -column 0 -columnspan 2 -sticky news - grid columnconfigure $w 0 -weight 1 - grid columnconfigure $w 1 -weight 1 - grid rowconfigure $w 1 -weight 2 - - variable topGroup [$w.zinc add group 1] - - variable girlItem [$w.zinc add icon $topGroup -image $girl \ - -composescale 1 -composerotation 1] - - # - # Controls for the window transform. - # - bind $w.zinc <ButtonPress-1> "::photoAlpha::press motion %x %y" - bind $w.zinc <ButtonRelease-1> ::photoAlpha::release - bind $w.zinc <ButtonPress-2> "::photoAlpha::press zoom %x %y" - bind $w.zinc <ButtonRelease-2> ::photoAlpha::release - bind $w.zinc <ButtonPress-3> "::photoAlpha::press mouseRotate %x %y" - bind $w.zinc <ButtonRelease-3> ::photoAlpha::release - - # - # Controls for alpha and gradient - # - bind $w.zinc <Shift-ButtonPress-1> "::photoAlpha::press modifyAlpha %x %y" - bind $w.zinc <Shift-ButtonRelease-1> ::photoAlpha::release - - - variable curX 0 - variable curY 0 - variable curAngle 0 - - proc press {action x y} { - variable w - variable curAngle - variable curX - variable curY - - set curX $x - set curY $y - set curAngle [expr atan2($y, $x)] - bind $w.zinc <Motion> "::photoAlpha::$action %x %y" - } - - proc motion {x y} { - variable w - variable topGroup - variable curX - variable curY - - foreach {x1 y1 x2 y2} [$w.zinc transform $topGroup \ - [list $x $y $curX $curY]] break - $w.zinc translate $topGroup [expr $x1 - $x2] [expr $y1 - $y2] - set curX $x - set curY $y - } - - proc zoom {x y} { - variable w - variable topGroup - variable curX - variable curY - - if {$x > $curX} { - set maxX $x - } else { - set maxX $curX - } - if {$y > $curY} { - set maxY $y - } else { - set maxY $curY - } - if {($maxX == 0) || ($maxY == 0)} { - return; - } - set sx [expr 1.0 + (double($x - $curX) / $maxX)] - set sy [expr 1.0 + (double($y - $curY) / $maxY)] - $w.zinc scale $topGroup $sx $sx - - set curX $x - set curY $y - } - - proc mouseRotate {x y} { - variable w - variable curAngle - variable topGroup - - set lAngle [expr atan2($y, $x)] - $w.zinc rotate $topGroup [expr $lAngle - $curAngle] - set curAngle $lAngle - } - - proc release {} { - variable w - - bind $w.zinc <Motion> {} - } - - proc modifyAlpha {x y} { - variable w - variable topGroup - - set xRate [expr double($x) / [$w.zinc cget -width]] - set xRate [expr ($xRate < 0) ? 0 : ($xRate > 1) ? 1 : $xRate] - set alpha [expr int($xRate * 100)] - - $w.zinc itemconfigure $topGroup -alpha $alpha - } -} |