From 960cdf29197bc3f5922110cf26627aa9709ac79b Mon Sep 17 00:00:00 2001
From: cvs2svn
Date: Fri, 10 Jun 2005 10:29:11 +0000
Subject: This commit was manufactured by cvs2svn to create branch 'bogue40'.

---
 demos/photoAlpha.tcl | 162 ---------------------------------------------------
 1 file changed, 162 deletions(-)
 delete mode 100644 demos/photoAlpha.tcl

(limited to 'demos/photoAlpha.tcl')

diff --git a/demos/photoAlpha.tcl b/demos/photoAlpha.tcl
deleted file mode 100644
index e3d41d6..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 $::zinc_demos images photoAlpha.png]]
-    variable texture [image create photo -file [file join $::zinc_demos 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
-    }
-}
-- 
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