diff options
Diffstat (limited to 'ruby_1_8_6/ext/tk/sample/demos-en/items.rb')
| -rw-r--r-- | ruby_1_8_6/ext/tk/sample/demos-en/items.rb | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/ruby_1_8_6/ext/tk/sample/demos-en/items.rb b/ruby_1_8_6/ext/tk/sample/demos-en/items.rb new file mode 100644 index 0000000000..8ab7668a07 --- /dev/null +++ b/ruby_1_8_6/ext/tk/sample/demos-en/items.rb @@ -0,0 +1,374 @@ +# items.rb +# +# This demonstration script creates a canvas that displays the +# canvas item types. +# +# canvas item types widget demo (called by 'widget') +# + +# toplevel widget +if defined?($items_demo) && $items_demo + $items_demo.destroy + $items_demo = nil +end + +# demo toplevel widget +$items_demo = TkToplevel.new {|w| + title("Canvas Item Demonstration") + iconname("Items") + positionWindow(w) +} + +# label +TkLabel.new($items_demo) { + font $font + wraplength '5i' + justify 'left' + text "This window contains a canvas widget with examples of the various kinds of items supported by canvases. The following operations are supported:\n Button-1 drag:\tmoves item under pointer.\n Button-2 drag:\trepositions view.\n Button-3 drag:\tstrokes out area.\n Ctrl+f:\t\tprints items under area." +}.pack('side'=>'top') + +# frame +TkFrame.new($items_demo) {|frame| + TkButton.new(frame) { + text 'Dismiss' + command proc{ + tmppath = $items_demo + $items_demo = nil + tmppath.destroy + } + }.pack('side'=>'left', 'expand'=>'yes') + + TkButton.new(frame) { + text 'Show Code' + command proc{showCode 'items'} + }.pack('side'=>'left', 'expand'=>'yes') +}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m') + +# frame +cvs = nil +TkFrame.new($items_demo) {|cf| + # canvas + cvs = TkCanvas.new(cf) {|c| + focus + scrollregion '0c 0c 30c 24c' + width '15c' + height '10c' + relief 'sunken' + borderwidth 2 + + hs = TkScrollbar.new(cf) {|s| + orient 'horizontal' + command proc{|*args| c.xview(*args)} + c.xscrollcommand proc{|first,last| s.set first,last} + } + + vs = TkScrollbar.new(cf) {|s| + command proc{|*args| c.yview(*args)} + c.yscrollcommand proc{|first,last| s.set first,last} + } + + if $tk_version =~ /^4\.[01]/ + hs.pack('side'=>'bottom', 'fill'=>'x') + vs.pack('side'=>'right', 'fill'=>'y') + c.pack('in'=>cf, 'expand'=>'yes', 'fill'=>'both') + + else + c.grid('in'=>cf, 'row'=>0, 'column'=>0, + 'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news') + vs.grid('row'=>0, 'column'=>1, + 'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news') + hs.grid('row'=>1, 'column'=>0, + 'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news') + TkGrid.rowconfigure(cf, 0, 'weight'=>1, 'minsize'=>0) + TkGrid.columnconfigure(cf, 0, 'weight'=>1, 'minsize'=>0) + + end + + } +}.pack('side'=>'top', 'fill'=>'both', 'expand'=>'yes') + +# Display a 3x3 rectangular grid +TkcRectangle.new(cvs, '0c', '0c', '30c', '24c', 'width'=>2) +TkcLine.new(cvs, '0c', '8c', '30c', '8c', 'width'=>2) +TkcLine.new(cvs, '0c', '16c', '30c', '16c', 'width'=>2) +TkcLine.new(cvs, '10c', '0c', '10c', '24c', 'width'=>2) +TkcLine.new(cvs, '20c', '0c', '20c', '24c', 'width'=>2) + +font1 = '-Adobe-Helvetica-Medium-R-Normal--*-120-*-*-*-*-*-*' +font2 = '-Adobe-Helvetica-Bold-R-Normal--*-240-*-*-*-*-*-*' +if TkWinfo.depth($root).to_i > 1 + blue = 'DeepSkyBlue3' + red = 'red' + bisque = 'bisque3' + green = 'SeaGreen3' +else + blue = 'black' + red = 'black' + bisque = 'black' + green = 'black' +end + +# tag +$tag_item = TkcGroup.new(cvs) + +# Set up demos within each of the areas of the grid. +TkcText.new(cvs, '5c', '.2c', 'text'=>'Lines', 'anchor'=>'n') +TkcLine.new(cvs, '1c', '1c', '3c', '1c', '1c', '4c', '3c', '4c', + 'width'=>2, 'fill'=>blue, 'capstyle'=>'butt', + 'join'=>'miter', 'tags'=>$tag_item ) +TkcLine.new(cvs, '4.67c','1c','4.67c','4c', 'arrow'=>'last', 'tags'=>$tag_item) +TkcLine.new(cvs, '6.33c','1c','6.33c','4c', 'arrow'=>'both', 'tags'=>$tag_item) +TkcLine.new(cvs, '5c','6c','9c','6c','9c','1c','8c','1c','8c','4.8c','8.8c', + '4.8c','8.8c','1.2c','8.2c','1.2c','8.2c','4.6c','8.6c','4.6c', + '8.6c','1.4c','8.4c','1.4c','8.4c','4.4c', + 'width'=>3, 'fill'=>red, 'tags'=>$tag_item ) +TkcLine.new(cvs, '1c','5c','7c','5c','7c','7c','9c','7c', 'width'=>'.5c', + 'stipple'=>'@'+[$demo_dir,'..', + 'images','gray25.xbm'].join(File::Separator), + 'arrow'=>'both', 'arrowshape'=>'15 15 7', 'tags'=>$tag_item ) +TkcLine.new(cvs, '1c','7c','1.75c','5.8c','2.5c','7c','3.25c','5.8c','4c','7c', + 'width'=>'.5c', 'capstyle'=>'round', 'join'=>'round', + 'tags'=>$tag_item ) + +TkcText.new(cvs, '15c', '.2c', + 'text'=>'Curves (smoothed lines)', 'anchor'=>'n') +TkcLine.new(cvs, '11c','4c','11.5c','1c','13.5c','1c','14c','4c', + 'smooth'=>'on', 'fill'=>blue, 'tags'=>$tag_item ) +TkcLine.new(cvs, '15.5c','1c','19.5c','1.5c','15.5c','4.5c','19.5c','4c', + 'smooth'=>'on', 'arrow'=>'both', 'width'=>3, 'tags'=>$tag_item ) +TkcLine.new(cvs, '12c','6c','13.5c','4.5c','16.5c','7.5c','18c','6c', + '16.5c','4.5c','13.5c','7.5c','12c','6c', + 'smooth'=>'on', 'width'=>'3m', 'capstyle'=>'round', + 'stipple'=>'@'+[$demo_dir, '..', + 'images', 'gray25.xbm'].join(File::Separator), + 'fill'=>red, 'tags'=>$tag_item ) + +TkcText.new(cvs, '25c', '.2c', 'text'=>'Polygons', 'anchor'=>'n') +TkcPolygon.new(cvs, '21c','1.0c','22.5c','1.75c','24c','1.0c','23.25c','2.5c', + '24c','4.0c','22.5c','3.25c','21c','4.0c','21.75c','2.5c', + 'fill'=>'green', 'outline'=>'black', 'width'=>4, + 'tags'=>$tag_item ) +TkcPolygon.new(cvs, '25c','4c','25c','4c','25c','1c','26c','1c','27c','4c', + '28c','1c','29c','1c','29c','4c','29c','4c', + 'fill'=>red, 'smooth'=>'on', 'tags'=> $tag_item) +TkcPolygon.new(cvs, '22c','4.5c','25c','4.5c','25c','6.75c','28c','6.75c', + '28c','5.25c','24c','5.25c','24c','6.0c','26c','6c','26c', + '7.5c','22c','7.5c', + 'stipple'=>'@' + [$demo_dir, '..', + 'images', 'gray25.xbm'].join(File::Separator), + 'outline'=>'black', 'tags'=>$tag_item ) + +TkcText.new(cvs, '5c', '8.2c', 'text'=>'Rectangles', 'anchor'=>'n') +TkcRectangle.new(cvs, '1c','9.5c','4c','12.5c', + 'outline'=>red, 'width'=>'3m', 'tags'=>$tag_item) +TkcRectangle.new(cvs, '0.5c','13.5c','4.5c','15.5c', + 'fill'=>green, 'tags'=>$tag_item ) +TkcRectangle.new(cvs, '6c','10c','9c','15c', 'outline'=>'', + 'stipple'=>'@'+[$demo_dir,'..', + 'images','gray25.xbm'].join(File::Separator), + 'fill'=>blue, 'tags'=>$tag_item ) + +TkcText.new(cvs, '15c', '8.2c', 'text'=>'Ovals', 'anchor'=>'n') +TkcOval.new(cvs, '11c','9.5c','14c','12.5c', + 'outline'=>red, 'width'=>'3m', 'tags'=>$tag_item) +TkcOval.new(cvs, '10.5c','13.5c','14.5c','15.5c', + 'fill'=>green, 'tags'=>$tag_item ) +TkcOval.new(cvs, '16c','10c','19c','15c', 'outline'=>'', + 'stipple'=>'@'+[$demo_dir,'..', + 'images','gray25.xbm'].join(File::Separator), + 'fill'=>blue, 'tags'=>$tag_item ) + +TkcText.new(cvs, '25c', '8.2c', 'text'=>'Text', 'anchor'=>'n') +TkcRectangle.new(cvs, '22.4c','8.9c','22.6c','9.1c') +TkcText.new(cvs, '22.5c', '9c', 'anchor'=>'n', 'font'=>font1, 'width'=>'4c', + 'text'=>'A short string of text, word-wrapped, justified left, and anchored north (at the top). The rectangles show the anchor points for each piece of text.', 'tags'=>$tag_item ) +TkcRectangle.new(cvs, '25.4c','10.9c','25.6c','11.1c') +TkcText.new(cvs, '25.5c', '11c', 'anchor'=>'w', 'font'=>font1, 'fill'=>blue, + 'text'=>"Several lines,\n each centered\nindividually,\nand all anchored\nat the left edge.", 'justify'=>'center', 'tags'=>$tag_item ) +TkcRectangle.new(cvs, '24.9c','13.9c','25.1c','14.1c') +if $tk_version =~ /^4\.[01]/ + TkcText.new(cvs, '25c', '14c', 'anchor'=>'c', 'font'=>font2, 'fill'=>red, + 'stipple'=>'@' + [$demo_dir, '..', + 'images', 'grey.5'].join(File::Separator), + 'text'=>'Stippled characters', 'tags'=>$tag_item ) +else + TkcText.new(cvs, '25c', '14c', 'anchor'=>'c', 'font'=>font2, 'fill'=>red, + 'stipple'=>'gray50', 'text'=>'Stippled characters', + 'tags'=>$tag_item ) +end + +TkcText.new(cvs, '5c', '16.2c', 'text'=>'Arcs', 'anchor'=>'n') +TkcArc.new(cvs, '0.5c','17c','7c','20c', 'fill'=>green, 'outline'=>'black', + 'start'=>45, 'extent'=>270, 'style'=>'pieslice', 'tags'=>$tag_item) +#TkcArc.new(cvs, '6.5c','17c','9.5c','20c', 'width'=>'4m', 'style'=>'arc', +# 'outline'=>blue, 'start'=>135, 'extent'=>270, +# 'outlinestipple'=>'@' + ['images', 'grey.25'].join(File::Separator), +# 'tags'=>$tag_item) +TkcArc.new(cvs, '6.5c','17c','9.5c','20c', 'width'=>'4m', 'style'=>'arc', + 'outline'=>blue, 'start'=>135, 'extent'=>270, + 'outlinestipple'=>'@'+[$demo_dir, '..', + 'images','gray25.xbm'].join(File::Separator), + 'tags'=>$tag_item) +TkcArc.new(cvs, '0.5c','20c','9.5c','24c', 'width'=>'4m', 'style'=>'pieslice', + 'fill'=>'', 'outline'=>red, 'start'=>225, 'extent'=>90, + 'tags'=>$tag_item) +TkcArc.new(cvs, '5.5c','20.5c','9.5c','23.5c', 'width'=>'4m', 'style'=>'chord', + 'fill'=>blue, 'outline'=>'', 'start'=>45, 'extent'=>270, + 'tags'=>$tag_item) + +TkcText.new(cvs, '15c', '16.2c', 'text'=>'Bitmaps', 'anchor'=>'n') +#TkcBitmap.new(cvs, '13c','20c', +# 'bitmap'=>'@' + ['images', 'face'].join(File::Separator), +# 'tags'=>$tag_item) +TkcBitmap.new(cvs, '13c','20c', + 'bitmap'=>'@' + [$demo_dir, '..', + 'images', 'face.xbm'].join(File::Separator), + 'tags'=>$tag_item) +#TkcBitmap.new(cvs, '17c','18.5c', +# 'bitmap'=>'@' + ['images', 'noletters'].join(File::Separator), +# 'tags'=>$tag_item) +TkcBitmap.new(cvs, '17c','18.5c', + 'bitmap'=>'@' + [$demo_dir, '..', + 'images', 'noletter.xbm'].join(File::Separator), + 'tags'=>$tag_item) +#TkcBitmap.new(cvs, '17c','21.5c', +# 'bitmap'=>'@' + ['images', 'letters'].join(File::Separator), +# 'tags'=>$tag_item) +# +TkcBitmap.new(cvs, '17c','21.5c') { + bitmap '@' + [$demo_dir, '..', 'images', 'letters.xbm'].join(File::Separator) + tags $tag_item +} +#TkcBitmap.new(cvs, '17c','21.5c') { +# bitmap '@' + ['images', 'letters'].join(File::Separator) +# tags $tag_item +#} + +TkcText.new(cvs, '25c', '16.2c', 'text'=>'Windows', 'anchor'=>'n') +TkButton.new(cvs) {|b| + text 'Press Me' + command proc{butPress cvs, red} + TkcWindow.new(cvs, '21c','18c', + 'window'=>b, 'anchor'=>'nw', 'tags'=>$tag_item) +} +TkEntry.new(cvs, 'width'=>20, 'relief'=>'sunken') {|e| + insert 'end', 'Edit this text' + TkcWindow.new(cvs, '21c','21c', + 'window'=>e, 'anchor'=>'nw', 'tags'=>$tag_item) +} +TkScale.new(cvs, 'from'=>0, 'to'=>100, 'length'=>'6c', 'sliderlength'=>'.4c', + 'width'=>'.5c', 'tickinterval'=>0 ) {|scl| + TkcWindow.new(cvs, '28.5c','17.5c', + 'window'=>scl, 'anchor'=>'n', 'tags'=>$tag_item) +} +TkcText.new(cvs, '21c', '17.9c', 'text'=>'Button:', 'anchor'=>'sw') +TkcText.new(cvs, '21c', '20.9c', 'text'=>'Entry:', 'anchor'=>'sw') +TkcText.new(cvs, '28.5c', '17.4c', 'text'=>'Scale:', 'anchor'=>'s') + +# Set up event bindings for canvas: +cvs.itembind($tag_item, 'Any-Enter', proc{itemEnter cvs}) +cvs.itembind($tag_item, 'Any-Leave', proc{itemLeave cvs}) +cvs.bind('2', proc{|x,y| cvs.scan_mark x,y}, '%x %y') +cvs.bind('B2-Motion', proc{|x,y| cvs.scan_dragto x,y}, '%x %y') +cvs.bind('3', proc{|x,y| itemMark cvs,x,y}, '%x %y') +cvs.bind('B3-Motion', proc{|x,y| itemStroke cvs,x,y}, '%x %y') +cvs.bind('Control-f', proc{itemsUnderArea cvs}) +cvs.bind('1', proc{|x,y| itemStartDrag cvs,x,y}, '%x %y') +cvs.bind('B1-Motion', proc{|x,y| itemDrag cvs,x,y}, '%x %y') +# Utility methods for highlighting the item under the pointer + +$restoreCmd = nil +def itemEnter (c) + if TkWinfo.depth(c).to_i == 1 + $restoreCmd = nil + return + end + type = c.itemtype('current') + if type == TkcWindow + $restoreCmd = nil + return + end + if type == TkcBitmap + bg = (c.itemconfiginfo('current', 'background'))[4] + $restoreCmd = proc{c.itemconfigure 'current', 'background', bg} + c.itemconfigure 'current', 'background', 'SteelBlue2' + return + end + fill = (c.itemconfiginfo('current', 'fill'))[4] + if (type == TkcRectangle || type == TkcOval || type == TkcArc) && fill == [] + outline = (c.itemconfiginfo('current', 'outline'))[4] + $restoreCmd = proc{c.itemconfigure 'current', 'outline', outline} + c.itemconfigure 'current', 'outline', 'SteelBlue2' + else + $restoreCmd = proc{c.itemconfigure 'current', 'fill', fill} + c.itemconfigure 'current', 'fill', 'SteelBlue2' + end +end + +def itemLeave(c) + $restoreCmd.call if $restoreCmd +end + +# Utility methods for stroking out a rectangle and printing what's +# underneath the rectangle's area. + +def itemMark(c,x,y) + $areaX1 = c.canvasx(x) + $areaY1 = c.canvasy(y) + c.delete 'area' +end + +def itemStroke(c,x,y) + x = c.canvasx(x) + y = c.canvasy(y) + if $areaX1 != x && $areaY1 != y + c.delete 'area' + c.addtag_withtag 'area', TkcRectangle.new(c, $areaX1, $areaY1, x, y, + '-outline', 'black') + $areaX2 = x + $areaY2 = y + end +end + +def itemsUnderArea(c) + area = c.find_withtag('area') + items = [] + c.find_enclosed($areaX1,$areaY1,$areaX2,$areaY2).each{|i| + items.push(i) if i.gettags.include?($tag_item) + } + print "Items enclosed by area: #{items.inspect}\n"; STDOUT.flush + items.clear + c.find_overlapping($areaX1,$areaY1,$areaX2,$areaY2).each{|i| + items.push(i) if i.gettags.include?($tag_item) + } + print "Items overlapping area: #{items.inspect}\n"; STDOUT.flush +end + +$areaX1 = 0 +$areaY1 = 0 +$areaX2 = 0 +$areaY2 = 0 + +# Utility methods to support dragging of items. + +def itemStartDrag(c,x,y) + $lastX = c.canvasx(x) + $lastY = c.canvasy(y) +end + +def itemDrag(c,x,y) + x = c.canvasx(x) + y = c.canvasy(y) + c.move 'current', x - $lastX, y - $lastY + $lastX = x + $lastY = y +end + +# Method that's invoked when the button embedded in the canvas +# is invoked. + +def butPress(w,color) + i = TkcText.new(w, '25c', '18.1c', + 'text'=>'Ouch!!', 'fill'=>color, 'anchor'=>'n') + Tk.after(500, proc{w.delete i}) +end |