Modules load procedure changes

lib/imgviewer.tcl

@@ -0,0 +1,60 @@
+package require Img
+
+
+proc ImageViewer {f w node} {
+    global tab_label noteBook factor im1 im2 editor
+    set factor($node) 1.0
+    frame $w.f -bg $editor(bg)
+    pack $w.f -side left -fill both -expand true
+    canvas $w.f.c -xscrollcommand "$w.f.x set" -yscrollcommand "$w.y set"  -bg $editor(bg)
+    scrollbar $w.f.x -ori hori -command "$w.f.c xview"  -bg $editor(bg)
+    scrollbar $w.y -ori vert -command "$w.f.c yview" -bg $editor(bg)
+    
+    pack $w.f.c -side top -fill both -expand true
+    pack $w.f.x -side top -fill x 
+    pack $w.y -side left -fill y
+    bind $w.f.c <Button-4> "%W yview scroll -3 units"
+    bind $w.f.c <Button-5> "%W yview scroll  3 units"
+    bind $w.f.c <Shift-Button-4> "%W xview scroll -2 units"
+    bind $w.f.c <Shift-Button-5> "%W xview scroll  2 units"
+    bind $w.f.c <Control-Button-4> "scale $w.f.c 0.5 $node"
+    bind $w.f.c <Control-Button-5> "scale $w.f.c 2 $node"
+    #$w.scrwin setwidget $w.scrwin.f
+    openImg $f $w.f.c $node
+    set tab_label [$noteBook itemcget $node -text]
+    balloon $w.f.c set "Mouse wheel up/down - verti<EFBFBD>al scrolling the image\n\
+    Shift + mouse wheel up/down - horizontal image scrolling\n\
+    Control + mouse wheel up/down is a scale image -/+"
+}
+        
+proc openImg {fn w node} {
+    global im1
+    set im1 [image create photo -file $fn]
+    #scale $w
+    list [file size $fn] bytes, [image width $im1]x[image height $im1]
+    $w create image 1 1 -image $im1 -anchor nw -tag img
+}
+
+proc scale {w {n 1} node} {
+    global im1 im2 factor noteBook tab_label
+    set factor($node) [expr {$factor($node) * $n}]
+    $w delete img
+    catch {image delete $im2}
+    set im2 [image create photo]
+    if {$factor($node)>=1} {
+        set f [expr int($factor($node))]
+        $im2 copy $im1 -zoom $f $f
+    } else {
+        set f [expr round(1./$factor($node))]
+        $im2 copy $im1 -subsample $f $f
+    }
+    $w create image 1 1 -image $im2 -anchor nw -tag img
+    $noteBook itemconfigure $node -text "$tab_label (size x$factor($node))"
+    $w config -scrollregion [$w bbox all]
+}
+
+
+
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