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