Class: Tk::Canvas (Ruby 2.2.2)
Description: Class : Tk::Canvas - Ruby 2.2.2

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Support for the Ruby 2.2 series has ended. See here for reference.

### Home Classes Methods

### In Files

- tk/lib/tk/canvas.rb
- tk/lib/tkextlib/blt/eps.rb

### Parent

TkWindow

### Methods

- #__BLT_EPS_item_boolval_optkeys
- #__BLT_EPS_item_strval_optkeys
- #__destroy_hook__
- #addtag
- #addtag_above
- #addtag_all
- #addtag_below
- #addtag_closest
- #addtag_enclosed
- #addtag_overlapping
- #addtag_withtag
- #bbox
- #canvas_x
- #canvas_y
- #canvasx
- #canvasy
- #coords
- #create
- #create_itemobj_from_id
- #dchars
- #delete
- #deltag
- #dtag
- #find
- #find_above
- #find_all
- #find_below
- #find_closest
- #find_enclosed
- #find_overlapping
- #find_withtag
- #gettags
- #i_move
- #icursor
- #imove
- #index
- #insert
- #itembind
- #itembind_append
- #itembind_remove
- #itembindinfo
- #itemfocus
- #itemtype
- #lower
- #move
- #move_to
- #moveto
- #postscript
- #raise
- #rchars
- #remove
- #replace_chars
- #replace_coords
- #scale
- #scan_dragto
- #scan_mark
- #select
- #select_adjust
- #select_clear
- #select_from
- #select_item
- #select_to

### Included Modules

- TkCanvasItemConfig
- Tk::Scrollable

### Class/Module Index

Quicksearch

- Arc
- Bitmap
- BitmapImage
- Checkbutton
- CloneMenu
- Font
- Grid
- INTERP
- Labelframe
- Line
- MenuButton
- MultiTkIp
- MultiTkIp::Command_Queue
- MultiTkIp::ThreadGroup
- MultiTkIp_OK
- MultiTkIp_PseudoToplevel_Evaluable
- Object
- Object::TkNamedVirtualEvent
- Object::TkSystemMenu
- Object::Ttk
- OptionMenuButton
- Oval
- Pack
- Panedwindow
- PhotoImage
- Place
- Polygon
- Radiobutton
- Rectangle
- RemoteTkIp
- Selection
- Spinbox
- TclTk
- TclTkCallback
- TclTkCommand
- TclTkImage
- TclTkInterpreter
- TclTkIp
- TclTkLib
- TclTkLib::EventFlag
- TclTkLib::RELEASE_TYPE
- TclTkLib::VarAccessFlag
- TclTkLibCommand
- TclTkObject
- TclTkVariable
- TclTkWidget
- TextItem
- Tk
- Tk::BLT
- Tk::BLT::Barchart
- Tk::BLT::Bitmap
- Tk::BLT::Busy
- Tk::BLT::Busy::Shield
- Tk::BLT::Container
- Tk::BLT::CutBuffer
- Tk::BLT::DnD
- Tk::BLT::DragDrop
- Tk::BLT::DragDrop::DnD_Handle
- Tk::BLT::DragDrop::PackageCommand
- Tk::BLT::DragDrop::PackageCommand::ValidateArgs
- Tk::BLT::DragDrop::SiteCommand
- Tk::BLT::DragDrop::SiteCommand::ValidateArgs
- Tk::BLT::DragDrop::Token
- Tk::BLT::EPS
- Tk::BLT::Graph
- Tk::BLT::GraphCommand
- Tk::BLT::Hiertable
- Tk::BLT::Htext
- Tk::BLT::PlotComponent
- Tk::BLT::PlotComponent::Axis
- Tk::BLT::PlotComponent::Bar
- Tk::BLT::PlotComponent::BitmapMarker
- Tk::BLT::PlotComponent::Crosshairs
- Tk::BLT::PlotComponent::Element
- Tk::BLT::PlotComponent::GridLine
- Tk::BLT::PlotComponent::ImageMarker
- Tk::BLT::PlotComponent::Legend
- Tk::BLT::PlotComponent::Line
- Tk::BLT::PlotComponent::LineMarker
- Tk::BLT::PlotComponent::Marker
- Tk::BLT::PlotComponent::OptKeys
- Tk::BLT::PlotComponent::Pen
- Tk::BLT::PlotComponent::PolygonMarker
- Tk::BLT::PlotComponent::Postscript
- Tk::BLT::PlotComponent::TextMarker
- Tk::BLT::PlotComponent::WindowMarker
- Tk::BLT::Printer
- Tk::BLT::Spline
- Tk::BLT::Stripchart
- Tk::BLT::Table
- Tk::BLT::Table::TableContainer
- Tk::BLT::Tabnotebook
- Tk::BLT::Tabnotebook::Tab
- Tk::BLT::Tabset
- Tk::BLT::Tabset::NamedTab
- Tk::BLT::Tabset::Tab
- Tk::BLT::Ted
- Tk::BLT::Tile
- Tk::BLT::Tile::Button
- Tk::BLT::Tile::CheckButton
- Tk::BLT::Tile::Checkbutton
- Tk::BLT::Tile::Frame
- Tk::BLT::Tile::Label
- Tk::BLT::Tile::RadioButton
- Tk::BLT::Tile::Radiobutton
- Tk::BLT::Tile::Scrollbar
- Tk::BLT::Tile::Toplevel
- Tk::BLT::Tree
- Tk::BLT::Tree::Node
- Tk::BLT::Tree::Notify
- Tk::BLT::Tree::Tag
- Tk::BLT::Tree::Trace
- Tk::BLT::Treeview
- Tk::BLT::Treeview::ConfigMethod
- Tk::BLT::Treeview::FindExecFlagValue
- Tk::BLT::Treeview::FindExecFlagValue::ValidateArgs
- Tk::BLT::Treeview::Node
- Tk::BLT::Treeview::OpenCloseCommand
- Tk::BLT::Treeview::OpenCloseCommand::ValidateArgs
- Tk::BLT::Treeview::Tag
- Tk::BLT::Treeview::TagOrID_Methods
- Tk::BLT::Vector
- Tk::BLT::VectorAccess
- Tk::BLT::Watch
- Tk::BLT::WinOp
- Tk::BLT::Winop
- Tk::BWidget
- Tk::BWidget::ArrowButton
- Tk::BWidget::Bitmap
- Tk::BWidget::Button
- Tk::BWidget::ButtonBox
- Tk::BWidget::ComboBox
- Tk::BWidget::Dialog
- Tk::BWidget::DragSite
- Tk::BWidget::DropSite
- Tk::BWidget::DynamicHelp
- Tk::BWidget::Entry
- Tk::BWidget::Label
- Tk::BWidget::LabelEntry
- Tk::BWidget::LabelFrame
- Tk::BWidget::ListBox
- Tk::BWidget::ListBox::Event_for_Items
- Tk::BWidget::ListBox::Item
- Tk::BWidget::MainFrame
- Tk::BWidget::MessageDlg
- Tk::BWidget::NoteBook
- Tk::BWidget::NoteBook::Event_for_Tabs
- Tk::BWidget::PagesManager
- Tk::BWidget::PanedWindow
- Tk::BWidget::PanelFrame
- Tk::BWidget::PasswdDlg
- Tk::BWidget::ProgressBar
- Tk::BWidget::ProgressDlg
- Tk::BWidget::ScrollView
- Tk::BWidget::ScrollableFrame
- Tk::BWidget::ScrolledWindow
- Tk::BWidget::SelectColor
- Tk::BWidget::SelectColor::Dialog
- Tk::BWidget::SelectColor::MenuButton
- Tk::BWidget::SelectColor::Menubutton
- Tk::BWidget::SelectFont
- Tk::BWidget::SelectFont::Dialog
- Tk::BWidget::SelectFont::Toolbar
- Tk::BWidget::Separator
- Tk::BWidget::SpinBox
- Tk::BWidget::StatusBar
- Tk::BWidget::TitleFrame
- Tk::BWidget::Tree
- Tk::BWidget::Tree::Event_for_Items
- Tk::BWidget::Tree::Node
- Tk::BWidget::Widget
- Tk::BinaryString
- Tk::Busy
- Tk::Button
- Tk::Canvas
- Tk::CheckButton
- Tk::Clock
- Tk::EncodedString
- Tk::Encoding
- Tk::Entry
- Tk::Frame
- Tk::HTML_Widget
- Tk::HTML_Widget::ClippingWindow
- Tk::ICONS
- Tk::Img
- Tk::Img::BMP
- Tk::Img::DTED
- Tk::Img::GIF
- Tk::Img::ICO
- Tk::Img::JPEG
- Tk::Img::PCX
- Tk::Img::PIXMAP
- Tk::Img::PNG
- Tk::Img::PPM
- Tk::Img::PS
- Tk::Img::Raw
- Tk::Img::SGI
- Tk::Img::SUN
- Tk::Img::TGA
- Tk::Img::TIFF
- Tk::Img::WINDOW
- Tk::Img::XBM
- Tk::Img::XPM
- Tk::Itcl
- Tk::Itcl::ItclObject
- Tk::ItemValidateConfigure
- Tk::Itk
- Tk::Itk::Archetype
- Tk::Itk::Component
- Tk::Itk::Toplevel
- Tk::Itk::Widget
- Tk::Iwidgets
- Tk::Iwidgets::Buttonbox
- Tk::Iwidgets::Calendar
- Tk::Iwidgets::Calendar::CalendarCommand
- Tk::Iwidgets::Calendar::CalendarCommand::ValidateArgs
- Tk::Iwidgets::Canvasprintbox
- Tk::Iwidgets::Canvasprintdialog
- Tk::Iwidgets::Checkbox
- Tk::Iwidgets::Combobox
- Tk::Iwidgets::Dateentry
- Tk::Iwidgets::Datefield
- Tk::Iwidgets::Dialog
- Tk::Iwidgets::Dialogshell
- Tk::Iwidgets::Disjointlistbox
- Tk::Iwidgets::Entryfield
- Tk::Iwidgets::Entryfield::EntryfieldValidate
- Tk::Iwidgets::Entryfield::EntryfieldValidate::ValidateArgs
- Tk::Iwidgets::Extbutton
- Tk::Iwidgets::Extfileselectionbox
- Tk::Iwidgets::Extfileselectiondialog
- Tk::Iwidgets::Feedback
- Tk::Iwidgets::Fileselectionbox
- Tk::Iwidgets::Fileselectiondialog
- Tk::Iwidgets::Finddialog
- Tk::Iwidgets::Hierarchy
- Tk::Iwidgets::Hierarchy::IconCommand
- Tk::Iwidgets::Hierarchy::IconCommand::ValidateArgs
- Tk::Iwidgets::Hierarchy::IndicatorCommand
- Tk::Iwidgets::Hierarchy::IndicatorCommand::ValidateArgs
- Tk::Iwidgets::Hierarchy::QueryCommand
- Tk::Iwidgets::Hierarchy::QueryCommand::ValidateArgs
- Tk::Iwidgets::Hyperhelp
- Tk::Iwidgets::Labeledframe
- Tk::Iwidgets::Labeledwidget
- Tk::Iwidgets::Mainwindow
- Tk::Iwidgets::Menubar
- Tk::Iwidgets::Messagebox
- Tk::Iwidgets::Messagedialog
- Tk::Iwidgets::Notebook
- Tk::Iwidgets::Optionmenu
- Tk::Iwidgets::Panedwindow
- Tk::Iwidgets::Promptdialog
- Tk::Iwidgets::Pushbutton
- Tk::Iwidgets::Radiobox
- Tk::Iwidgets::Scopedobject
- Tk::Iwidgets::Scrolledcanvas
- Tk::Iwidgets::Scrolledframe
- Tk::Iwidgets::Scrolledhtml
- Tk::Iwidgets::Scrolledlistbox
- Tk::Iwidgets::Scrolledtext
- Tk::Iwidgets::Scrolledwidget
- Tk::Iwidgets::Selectionbox
- Tk::Iwidgets::Selectiondialog
- Tk::Iwidgets::Shell
- Tk::Iwidgets::Spindate
- Tk::Iwidgets::Spinint
- Tk::Iwidgets::Spinner
- Tk::Iwidgets::Spinner::EntryfieldValidate
- Tk::Iwidgets::Spinner::EntryfieldValidate::ValidateArgs
- Tk::Iwidgets::Spintime
- Tk::Iwidgets::Tabnotebook
- Tk::Iwidgets::Tabset
- Tk::Iwidgets::Timeentry
- Tk::Iwidgets::Timefield
- Tk::Iwidgets::Toolbar
- Tk::Iwidgets::Watch
- Tk::Label
- Tk::LabelFrame
- Tk::Listbox
- Tk::Mac
- Tk::Mac::IconBitmap
- Tk::MacResource
- Tk::Menu
- Tk::Menu::TkInternalFunction
- Tk::MenuClone
- Tk::Menubutton
- Tk::Message
- Tk::OptionMenubutton
- Tk::OptionMenubutton::OptionMenu
- Tk::OptionObj
- Tk::PanedWindow
- Tk::RadioButton
- Tk::Root
- Tk::Scale
- Tk::Scrollable
- Tk::Scrollbar
- Tk::Spinbox
- Tk::Spinbox::SpinCommand
- Tk::Spinbox::SpinCommand::ValidateArgs
- Tk::SysMenu_Apple
- Tk::SysMenu_Help
- Tk::SysMenu_System
- Tk::SystemMenu
- Tk::TOPLEVEL_ALIASES
- Tk::TclX
- Tk::TclX::XPG3_MsgCat
- Tk::Tcllib
- Tk::Tcllib::Autoscroll
- Tk::Tcllib::CText
- Tk::Tcllib::ChatWidget
- Tk::Tcllib::Crosshair
- Tk::Tcllib::Cursor
- Tk::Tcllib::DateField
- Tk::Tcllib::Datefield
- Tk::Tcllib::Diagrams
- Tk::Tcllib::GetString_Dialog
- Tk::Tcllib::History
- Tk::Tcllib::ICO
- Tk::Tcllib::IP6_Entry
- Tk::Tcllib::IPEntry
- Tk::Tcllib::IPEntry6
- Tk::Tcllib::IP_Entry
- Tk::Tcllib::IP_Entry6
- Tk::Tcllib::KHIM
- Tk::Tcllib::KHIM::Help
- Tk::Tcllib::Ntext
- Tk::Tcllib::Plotchart
- Tk::Tcllib::Plotchart::Barchart
- Tk::Tcllib::Plotchart::Barchart3D
- Tk::Tcllib::Plotchart::Boxplot
- Tk::Tcllib::Plotchart::ChartMethod
- Tk::Tcllib::Plotchart::Ganttchart
- Tk::Tcllib::Plotchart::Histogram
- Tk::Tcllib::Plotchart::HorizontalBarchart
- Tk::Tcllib::Plotchart::IsometricPlot
- Tk::Tcllib::Plotchart::Isometricplot
- Tk::Tcllib::Plotchart::Piechart
- Tk::Tcllib::Plotchart::Plot3D
- Tk::Tcllib::Plotchart::PlotSeries
- Tk::Tcllib::Plotchart::PolarPlot
- Tk::Tcllib::Plotchart::Polarplot
- Tk::Tcllib::Plotchart::Radialchart
- Tk::Tcllib::Plotchart::RibbonChart3D
- Tk::Tcllib::Plotchart::RightAxis
- Tk::Tcllib::Plotchart::Stripchart
- Tk::Tcllib::Plotchart::TXPlot
- Tk::Tcllib::Plotchart::Timechart
- Tk::Tcllib::Plotchart::XLogYPlot
- Tk::Tcllib::Plotchart::XYPlot
- Tk::Tcllib::Style
- Tk::Tcllib::Swaplist_Dialog
- Tk::Tcllib::TableList
- Tk::Tcllib::TableList_Tile
- Tk::Tcllib::Tablelist
- Tk::Tcllib::TablelistItemConfig
- Tk::Tcllib::Tablelist_Tile
- Tk::Tcllib::Tkpiechart
- Tk::Tcllib::Tkpiechart::BoxLabeler
- Tk::Tcllib::Tkpiechart::ConfigMethod
- Tk::Tcllib::Tkpiechart::Label
- Tk::Tcllib::Tkpiechart::PeripheralLabeler
- Tk::Tcllib::Tkpiechart::Pie
- Tk::Tcllib::Tkpiechart::PieChartObj
- Tk::Tcllib::Tkpiechart::Slice
- Tk::Tcllib::Tooltip
- Tk::Tcllib::Validator
- Tk::Tcllib::Widget
- Tk::Tcllib::Widget::Calendar
- Tk::Tcllib::Widget::Canvas_Sqmap
- Tk::Tcllib::Widget::Canvas_Zoom
- Tk::Tcllib::Widget::DateEntry
- Tk::Tcllib::Widget::Dateentry
- Tk::Tcllib::Widget::Dialog
- Tk::Tcllib::Widget::MenuEntry
- Tk::Tcllib::Widget::Menuentry
- Tk::Tcllib::Widget::PanelFrame
- Tk::Tcllib::Widget::Panelframe
- Tk::Tcllib::Widget::Ruler
- Tk::Tcllib::Widget::ScreenRuler
- Tk::Tcllib::Widget::Screenruler
- Tk::Tcllib::Widget::ScrolledWindow
- Tk::Tcllib::Widget::Scrolledwindow
- Tk::Tcllib::Widget::Statusbar
- Tk::Tcllib::Widget::SuperFrame
- Tk::Tcllib::Widget::Toolbar
- Tk::Tcllib::Widget::ToolbarItem
- Tk::Tcllib::Widget::ToolbarItemConfig
- Tk::Text
- Tk::Text::IndexModMethods
- Tk::Text::IndexString
- Tk::Text::Peer
- Tk::Tile
- Tk::Tile::Button
- Tk::Tile::CheckButton
- Tk::Tile::Checkbutton
- Tk::Tile::Combobox
- Tk::Tile::Dialog
- Tk::Tile::Entry
- Tk::Tile::Font
- Tk::Tile::Frame
- Tk::Tile::KeyNav
- Tk::Tile::Label
- Tk::Tile::LabelFrame
- Tk::Tile::Labelframe
- Tk::Tile::MenuButton
- Tk::Tile::Menubutton
- Tk::Tile::Notebook
- Tk::Tile::ParseStyleLayout
- Tk::Tile::Progress
- Tk::Tile::Progressbar
- Tk::Tile::RadioButton
- Tk::Tile::Radiobutton
- Tk::Tile::Scale
- Tk::Tile::Scrollbar
- Tk::Tile::Separator
- Tk::Tile::SizeGrip
- Tk::Tile::Sizegrip
- Tk::Tile::Spinbox
- Tk::Tile::Square
- Tk::Tile::Style
- Tk::Tile::TButton
- Tk::Tile::TCheckButton
- Tk::Tile::TCheckbutton
- Tk::Tile::TCombobox
- Tk::Tile::TEntry
- Tk::Tile::TFrame
- Tk::Tile::TLabel
- Tk::Tile::TLabelFrame
- Tk::Tile::TLabelframe
- Tk::Tile::TMenuButton
- Tk::Tile::TMenubutton
- Tk::Tile::TNotebook
- Tk::Tile::TPaned
- Tk::Tile::TProgress
- Tk::Tile::TProgressbar
- Tk::Tile::TRadioButton
- Tk::Tile::TRadiobutton
- Tk::Tile::TScale
- Tk::Tile::TScrollbar
- Tk::Tile::TSeparator
- Tk::Tile::TSpinbox
- Tk::Tile::TSpinbox::SpinCommand
- Tk::Tile::TSpinbox::SpinCommand::ValidateArgs
- Tk::Tile::TSquare
- Tk::Tile::TileWidget
- Tk::Tile::Treeview
- Tk::Tile::Treeview::Item
- Tk::Tile::Treeview::Root
- Tk::Tile::Treeview::Tag
- Tk::Tile::TreeviewConfig
- Tk::Tile::XScrollbar
- Tk::Tile::YScrollbar
- Tk::TkDND
- Tk::TkDND::DND
- Tk::TkDND::DND_Subst
- Tk::TkDND::Shape
- Tk::TkSystemMenu
- Tk::TkTable
- Tk::TkTable::BrowseCommand
- Tk::TkTable::BrowseCommand::ValidateArgs
- Tk::TkTable::CellCommand
- Tk::TkTable::CellCommand::ValidateArgs
- Tk::TkTable::CellTag
- Tk::TkTable::ConfigMethod
- Tk::TkTable::NamedCellTag
- Tk::TkTable::SelectionCommand
- Tk::TkTable::SelectionCommand::ValidateArgs
- Tk::TkTable::ValidateCommand
- Tk::TkTable::ValidateCommand::ValidateArgs
- Tk::TkTrans
- Tk::Toplevel
- Tk::TreeCtrl
- Tk::TreeCtrl::BindCallback
- Tk::TreeCtrl::BitmapElement
- Tk::TreeCtrl::BorderElement
- Tk::TreeCtrl::Column
- Tk::TreeCtrl::ConfigMethod
- Tk::TreeCtrl::Element
- Tk::TreeCtrl::ImageElement
- Tk::TreeCtrl::Item
- Tk::TreeCtrl::NotifyEvent
- Tk::TreeCtrl::RectangleElement
- Tk::TreeCtrl::Style
- Tk::TreeCtrl_Widget
- Tk::Trofs
- Tk::Ttk
- Tk::UTF8_String
- Tk::ValidateConfigure
- Tk::Vu
- Tk::Vu::Bargraph
- Tk::Vu::ChartsConfig
- Tk::Vu::Dial
- Tk::Vu::NamedPieSlice
- Tk::Vu::Pie
- Tk::Vu::PieSlice
- Tk::Vu::PieSliceConfigMethod
- Tk::Vu::TkcBarchart
- Tk::Vu::TkcSticker
- Tk::Vu::TkcStripchart
- Tk::WinDDE
- Tk::WinRegistry
- Tk::Winico
- Tk::Winico::Winico_callback
- Tk::Winico::Winico_callback::ValidateArgs
- Tk::Wm
- Tk::Wm_for_General
- Tk::XScrollable
- Tk::XScrollbar
- Tk::X_Scrollable
- Tk::YScrollable
- Tk::YScrollbar
- Tk::Y_Scrollable
- TkAfter
- TkBgError
- TkBindCore
- TkBindTag
- TkBindTagAll
- TkBitmapImage
- TkCallbackBreak
- TkCallbackContinue
- TkCallbackEntry
- TkCallbackRedo
- TkCallbackRetry
- TkCallbackReturn
- TkCallbackThrow
- TkCanvasItemConfig
- TkClipboard
- TkComm
- TkComposite
- TkConfigMethod
- TkConsole
- TkCore
- TkCore::Tk_OBJECT_TABLE
- TkDatabaseClass
- TkDialog
- TkDialog2
- TkDialogObj
- TkEvent
- TkEvent::Event
- TkEvent::Event::Grp
- TkEvent::Event::StateMask
- TkEvent::Event::TypeNum
- TkFont
- TkFont::Chooser
- TkFont::CoreMethods
- TkFont::DescendantFont
- TkFont::Fontchooser
- TkGrid
- TkImage
- TkItemConfigMethod
- TkItemConfigOptkeys
- TkItemFontOptkeys
- TkKernel
- TkKinput
- TkListItemConfig
- TkLocalJumpError
- TkManageFocus
- TkMenuEntryConfig
- TkMenuSpec
- TkMenubar
- TkMsgCat
- TkMsgCatalog
- TkNamedFont
- TkNamespace
- TkNamespace::Ensemble
- TkNamespace::NsCode
- TkNamespace::ScopeArgs
- TkObject
- TkOption
- TkOptionDB
- TkOptionDB::Priority
- TkPack
- TkPackage
- TkPalette
- TkPhotoImage
- TkPixmapImage
- TkPlace
- TkRTTimer
- TkResourceDB
- TkScrollbox
- TkSelection
- TkTextImage
- TkTextMark
- TkTextMarkAnchor
- TkTextMarkCurrent
- TkTextMarkInsert
- TkTextNamedMark
- TkTextNamedTag
- TkTextTag
- TkTextTagConfig
- TkTextTagSel
- TkTextWin
- TkTextWindow
- TkTimer
- TkTreatFont
- TkTreatItemFont
- TkTreatTagFont
- TkUtil
- TkUtil::CallbackSubst
- TkUtil::CallbackSubst::Info
- TkValidateCommand
- TkValidateCommand::ValidateArgs
- TkValidation
- TkValidation::ValidateCmd
- TkValidation::ValidateCmd::Action
- TkVarAccess
- TkVariable
- TkVirtualEvent
- TkVirtualEvent::PreDefVirtEvent
- TkVirtualEvent::TkNamedVirtualEvent
- TkWarning
- TkWarning2
- TkWarningObj
- TkWidget
- TkWindow
- TkWinfo
- TkXIM
- TkcArc
- TkcBitmap
- TkcGroup
- TkcImage
- TkcItem
- TkcLine
- TkcNamedTag
- TkcOval
- TkcPolygon
- TkcRectangle
- TkcTag
- TkcTagAccess
- TkcTagAll
- TkcTagCurrent
- TkcTagString
- TkcText
- TkcWindow
- TktImage
- TktMark
- TktMarkAnchor
- TktMarkCurrent
- TktMarkInsert
- TktNamedMark
- TktNamedTag
- TktTag
- TktTagSel
- TktWindow
- Variable
- VirtualEvent
- WindowItem
- Winfo
- unknown

No matching classes.

# Tk::Canvas

### Constants

TkCommandNames
WidgetClassName

### Public Instance Methods

__BLT_EPS_item_boolval_optkeys(id) click to toggle source
Alias for: __item_boolval_optkeys
__BLT_EPS_item_strval_optkeys(id) click to toggle source
Alias for: __item_strval_optkeys
__destroy_hook__() click to toggle source

                   # File tk/lib/tk/canvas.rb, line 53
    def __destroy_hook__
      TkcItem::CItemID_TBL.delete(@path)
    end

addtag(tag, mode, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 98
    def addtag(tag, mode, *args)
      mode = mode.to_s
      if args[0] && mode =~ /^(above|below|with(tag)?)$/
        args[0] = tagid(args[0])
      end
      tk_send_without_enc('addtag', tagid(tag), mode, *args)
      self
    end

addtag_above(tagOrId, target) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 106
    def addtag_above(tagOrId, target)
      addtag(tagOrId, 'above', tagid(target))
    end

addtag_all(tagOrId) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 109
    def addtag_all(tagOrId)
      addtag(tagOrId, 'all')
    end

addtag_below(tagOrId, target) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 112
    def addtag_below(tagOrId, target)
      addtag(tagOrId, 'below', tagid(target))
    end

addtag_closest(tagOrId, x, y, halo=None, start=None) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 115
    def addtag_closest(tagOrId, x, y, halo=None, start=None)
      addtag(tagOrId, 'closest', x, y, halo, start)
    end

addtag_enclosed(tagOrId, x1, y1, x2, y2) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 118
    def addtag_enclosed(tagOrId, x1, y1, x2, y2)
      addtag(tagOrId, 'enclosed', x1, y1, x2, y2)
    end

addtag_overlapping(tagOrId, x1, y1, x2, y2) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 121
    def addtag_overlapping(tagOrId, x1, y1, x2, y2)
      addtag(tagOrId, 'overlapping', x1, y1, x2, y2)
    end

addtag_withtag(tagOrId, tag) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 124
    def addtag_withtag(tagOrId, tag)
      addtag(tagOrId, 'withtag', tagid(tag))
    end

bbox(tagOrId, *tags) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 128
    def bbox(tagOrId, *tags)
      list(tk_send_without_enc('bbox', tagid(tagOrId),
                               *tags.collect{|t| tagid(t)}))
    end

canvas_x(screen_x, *args) click to toggle source
Alias for: canvasx
canvas_y(screen_y, *args) click to toggle source
Alias for: canvasy
canvasx(screen_x, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 172
    def canvasx(screen_x, *args)
      #tk_tcl2ruby(tk_send_without_enc('canvasx', screen_x, *args))
      number(tk_send_without_enc('canvasx', screen_x, *args))
    end

Also aliased as: canvas_x
canvasy(screen_y, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 176
    def canvasy(screen_y, *args)
      #tk_tcl2ruby(tk_send_without_enc('canvasy', screen_y, *args))
      number(tk_send_without_enc('canvasy', screen_y, *args))
    end

Also aliased as: canvas_y
coords(tag, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 183
    def coords(tag, *args)
      if args.empty?
        tk_split_list(tk_send_without_enc('coords', tagid(tag)))
      else
        tk_send_without_enc('coords', tagid(tag), *(args.flatten))
        self
      end
    end

create(type, *args) click to toggle source

create a canvas item without creating a TkcItem object

                   # File tk/lib/tk/canvas.rb, line 87
    def create(type, *args)
      if type.kind_of?(Class) && type < TkcItem
        # do nothing
      elsif TkcItem.type2class(type.to_s)
        type = TkcItem.type2class(type.to_s)
      else
        fail ArgumentError, "type must a subclass of TkcItem class, or a string in CItemTypeToClass"
      end
      type.create(self, *args)
    end

create_itemobj_from_id(idnum) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 613
    def create_itemobj_from_id(idnum)
      id = TkcItem.id2obj(self, idnum.to_i)
      return id if id.kind_of?(TkcItem)

      typename = tk_send('type', id)
      unless type = TkcItem.type2class(typename)
        (itemclass = typename.dup)[0,1] = typename[0,1].upcase
        type = TkcItem.const_set(itemclass, Class.new(TkcItem))
        type.const_set("CItemTypeName", typename.freeze)
        TkcItem::CItemTypeToClass[typename] = type
      end

      canvas = self
      (obj = type.allocate).instance_eval{
        @parent = @c = canvas
        @path = canvas.path
        @id = id
        TkcItem::CItemID_TBL.mutex.synchronize{
          TkcItem::CItemID_TBL[@path] = {} unless TkcItem::CItemID_TBL[@path]
          TkcItem::CItemID_TBL[@path][@id] = self
        }
      }
    end

dchars(tag, first, last=None) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 192
    def dchars(tag, first, last=None)
      tk_send_without_enc('dchars', tagid(tag),
                          _get_eval_enc_str(first), _get_eval_enc_str(last))
      self
    end

delete(*args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 198
    def delete(*args)
      tbl = nil
      TkcItem::CItemID_TBL.mutex.synchronize{
        tbl = TkcItem::CItemID_TBL[self.path]
      }
      if tbl
        args.each{|tag|
          find('withtag', tag).each{|item|
            if item.kind_of?(TkcItem)
              TkcItem::CItemID_TBL.mutex.synchronize{
                tbl.delete(item.id)
              }
            end
          }
        }
      end
      tk_send_without_enc('delete', *args.collect{|t| tagid(t)})
      self
    end

Also aliased as: remove
deltag(tag, tag_to_del=None) click to toggle source
Alias for: dtag
dtag(tag, tag_to_del=None) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 219
    def dtag(tag, tag_to_del=None)
      tk_send_without_enc('dtag', tagid(tag), tagid(tag_to_del))
      self
    end

Also aliased as: deltag
find(mode, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 225
    def find(mode, *args)
      list(tk_send_without_enc('find', mode, *args)).collect!{|id|
        TkcItem.id2obj(self, id)
      }
    end

find_above(target) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 230
    def find_above(target)
      find('above', tagid(target))
    end

find_all() click to toggle source

                   # File tk/lib/tk/canvas.rb, line 233
    def find_all
      find('all')
    end

find_below(target) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 236
    def find_below(target)
      find('below', tagid(target))
    end

find_closest(x, y, halo=None, start=None) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 239
    def find_closest(x, y, halo=None, start=None)
      find('closest', x, y, halo, start)
    end

find_enclosed(x1, y1, x2, y2) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 242
    def find_enclosed(x1, y1, x2, y2)
      find('enclosed', x1, y1, x2, y2)
    end

find_overlapping(x1, y1, x2, y2) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 245
    def find_overlapping(x1, y1, x2, y2)
      find('overlapping', x1, y1, x2, y2)
    end

find_withtag(tag) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 248
    def find_withtag(tag)
      find('withtag', tag)
    end

gettags(tagOrId) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 266
    def gettags(tagOrId)
      list(tk_send_without_enc('gettags', tagid(tagOrId))).collect{|tag|
        TkcTag.id2obj(self, tag)
      }
    end

i_move(tagOrId, idx, x, y) click to toggle source
Alias for: imove
icursor(tagOrId, index) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 272
    def icursor(tagOrId, index)
      tk_send_without_enc('icursor', tagid(tagOrId), index)
      self
    end

imove(tagOrId, idx, x, y) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 277
    def imove(tagOrId, idx, x, y)
      tk_send_without_enc('imove', tagid(tagOrId), idx, x, y)
      self
    end

Also aliased as: i_move
index(tagOrId, idx) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 283
    def index(tagOrId, idx)
      number(tk_send_without_enc('index', tagid(tagOrId), idx))
    end

insert(tagOrId, index, string) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 287
    def insert(tagOrId, index, string)
      tk_send_without_enc('insert', tagid(tagOrId), index,
                          _get_eval_enc_str(string))
      self
    end

itembind(tag, context, *args) click to toggle source

def itembind(tag, context, cmd=Proc.new, *args)

    _bind([path, "bind", tagid(tag)], context, cmd, *args)
    self

end

                   # File tk/lib/tk/canvas.rb, line 137
    def itembind(tag, context, *args)
      # if args[0].kind_of?(Proc) || args[0].kind_of?(Method)
      if TkComm._callback_entry?(args[0]) || !block_given?
        cmd = args.shift
      else
        cmd = Proc.new
      end
      _bind([path, "bind", tagid(tag)], context, cmd, *args)
      self
    end

itembind_append(tag, context, *args) click to toggle source

def #itembind_append(tag, context, cmd=Proc.new, *args)

    _bind_append([path, "bind", tagid(tag)], context, cmd, *args)
    self

end

                   # File tk/lib/tk/canvas.rb, line 152
    def itembind_append(tag, context, *args)
      # if args[0].kind_of?(Proc) || args[0].kind_of?(Method)
      if TkComm._callback_entry?(args[0]) || !block_given?
        cmd = args.shift
      else
        cmd = Proc.new
      end
      _bind_append([path, "bind", tagid(tag)], context, cmd, *args)
      self
    end

itembind_remove(tag, context) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 163
    def itembind_remove(tag, context)
      _bind_remove([path, "bind", tagid(tag)], context)
      self
    end

itembindinfo(tag, context=nil) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 168
    def itembindinfo(tag, context=nil)
      _bindinfo([path, "bind", tagid(tag)], context)
    end

itemfocus(tagOrId=nil) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 252
    def itemfocus(tagOrId=nil)
      if tagOrId
        tk_send_without_enc('focus', tagid(tagOrId))
        self
      else
        ret = tk_send_without_enc('focus')
        if ret == ""
          nil
        else
          TkcItem.id2obj(self, ret)
        end
      end
    end

itemtype(tag) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 609
    def itemtype(tag)
      TkcItem.type2class(tk_send('type', tagid(tag)))
    end

lower(tag, below=nil) click to toggle source

# begin¶ ↑

    def itemcget(tagOrId, option)
      case option.to_s
      when 'dash', 'activedash', 'disableddash'
        conf = tk_send_without_enc('itemcget', tagid(tagOrId), "-#{option}")
        if conf =~ /^[0-9]/
          list(conf)
        else
          conf
        end
      when 'text', 'label', 'show', 'data', 'file', 'maskdata', 'maskfile'
        _fromUTF8(tk_send_without_enc('itemcget', tagid(tagOrId), "-#{option}"))
      when 'font', 'kanjifont'
        #fnt = tk_tcl2ruby(tk_send('itemcget', tagid(tagOrId), "-#{option}"))
        fnt = tk_tcl2ruby(_fromUTF8(tk_send_with_enc('itemcget', tagid(tagOrId), '-font')))
        unless fnt.kind_of?(TkFont)
          fnt = tagfontobj(tagid(tagOrId), fnt)
        end
        if option.to_s == 'kanjifont' && JAPANIZED_TK && TK_VERSION =~ /^4\.*/
          # obsolete; just for compatibility
          fnt.kanji_font
        else
          fnt
        end
      else
        tk_tcl2ruby(_fromUTF8(tk_send_without_enc('itemcget', tagid(tagOrId),
                                                  "-#{option}")))
      end
    end

    def itemconfigure(tagOrId, key, value=None)
      if key.kind_of? Hash
        key = _symbolkey2str(key)
        coords = key.delete('coords')
        self.coords(tagOrId, coords) if coords

        if ( key['font'] || key['kanjifont'] \
            || key['latinfont'] || key['asciifont'] )
          tagfont_configure(tagid(tagOrId), key.dup)
        else
          _fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId),
                                        *hash_kv(key, true)))
        end

      else
        if ( key == 'coords' || key == :coords )
          self.coords(tagOrId, value)
        elsif ( key == 'font' || key == :font ||
                key == 'kanjifont' || key == :kanjifont ||
                key == 'latinfont' || key == :latinfont ||
                key == 'asciifont' || key == :asciifont )
          if value == None
            tagfontobj(tagid(tagOrId))
          else
            tagfont_configure(tagid(tagOrId), {key=>value})
          end
        else
          _fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId),
                                        "-#{key}", _get_eval_enc_str(value)))
        end
      end
      self
    end

# def itemconfigure(tagOrId, key, value=None) # if key.kind_of? Hash # tk_send 'itemconfigure', tagid(tagOrId), *hash_kv(key) # else # tk_send 'itemconfigure', tagid(tagOrId), “-#{key}”, value # end # end # def itemconfigure(tagOrId, keys) # tk_send 'itemconfigure', tagid(tagOrId), *hash_kv(keys) # end

    def itemconfiginfo(tagOrId, key=nil)
      if TkComm::GET_CONFIGINFO_AS_ARRAY
        if key
          case key.to_s
          when 'coords'
            return ['coords', '', '', '', self.coords(tagOrId)]
          when 'dash', 'activedash', 'disableddash'
            conf = tk_split_simplelist(tk_send_without_enc('itemconfigure', tagid(tagOrId), "-#{key}"))
            if conf[3] && conf[3] =~ /^[0-9]/
              conf[3] = list(conf[3])
            end
            if conf[4] && conf[4] =~ /^[0-9]/
              conf[4] = list(conf[4])
            end
          when 'text', 'label', 'show', 'data', 'file', 'maskdata', 'maskfile'
            conf = tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId), "-#{key}")))
          when 'font', 'kanjifont'
            conf = tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId),"-#{key}")))
            conf[4] = tagfont_configinfo(tagid(tagOrId), conf[4])
          else
            conf = tk_split_list(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId), "-#{key}")))
          end
          conf[0] = conf[0][1..-1]
          conf
        else
          ret = tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId)))).collect{|conflist|
            conf = tk_split_simplelist(conflist)
            conf[0] = conf[0][1..-1]
            case conf[0]
            when 'text', 'label', 'show', 'data', 'file', 'maskdata', 'maskfile'
            when 'dash', 'activedash', 'disableddash'
              if conf[3] && conf[3] =~ /^[0-9]/
                conf[3] = list(conf[3])
              end
              if conf[4] && conf[4] =~ /^[0-9]/
                conf[4] = list(conf[4])
              end
            else
              if conf[3]
                if conf[3].index('{')
                  conf[3] = tk_split_list(conf[3])
                else
                  conf[3] = tk_tcl2ruby(conf[3])
                end
              end
              if conf[4]
                if conf[4].index('{')
                  conf[4] = tk_split_list(conf[4])
                else
                  conf[4] = tk_tcl2ruby(conf[4])
                end
              end
            end
            conf[1] = conf[1][1..-1] if conf.size == 2 # alias info
            conf
          }

          fontconf = ret.assoc('font')
          if fontconf
            ret.delete_if{|item| item[0] == 'font' || item[0] == 'kanjifont'}
            fontconf[4] = tagfont_configinfo(tagid(tagOrId), fontconf[4])
            ret.push(fontconf)
          end

          ret << ['coords', '', '', '', self.coords(tagOrId)]
        end
      else # ! TkComm::GET_CONFIGINFO_AS_ARRAY
        if key
          case key.to_s
          when 'coords'
            {'coords' => ['', '', '', self.coords(tagOrId)]}
          when 'dash', 'activedash', 'disableddash'
            conf = tk_split_simplelist(tk_send_without_enc('itemconfigure',
                                                           tagid(tagOrId),
                                                           "-#{key}"))
            if conf[3] && conf[3] =~ /^[0-9]/
              conf[3] = list(conf[3])
            end
            if conf[4] && conf[4] =~ /^[0-9]/
              conf[4] = list(conf[4])
            end
          when 'text', 'label', 'show', 'data', 'file', 'maskdata', 'maskfile'
            conf = tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId), "-#{key}")))
          when 'font', 'kanjifont'
            conf = tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId),"-#{key}")))
            conf[4] = tagfont_configinfo(tagid(tagOrId), conf[4])
          else
            conf = tk_split_list(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId), "-#{key}")))
          end
          key = conf.shift[1..-1]
          { key => conf }
        else
          ret = {}
          tk_split_simplelist(_fromUTF8(tk_send_without_enc('itemconfigure', tagid(tagOrId)))).each{|conflist|
            conf = tk_split_simplelist(conflist)
            key = conf.shift[1..-1]
            case key
            when 'text', 'label', 'show', 'data', 'file', 'maskdata', 'maskfile'
            when 'dash', 'activedash', 'disableddash'
              if conf[2] && conf[2] =~ /^[0-9]/
                conf[2] = list(conf[2])
              end
              if conf[3] && conf[3] =~ /^[0-9]/
                conf[3] = list(conf[3])
              end
            else
              if conf[2]
                if conf[2].index('{')
                  conf[2] = tk_split_list(conf[2])
                else
                  conf[2] = tk_tcl2ruby(conf[2])
                end
              end
              if conf[3]
                if conf[3].index('{')
                  conf[3] = tk_split_list(conf[3])
                else
                  conf[3] = tk_tcl2ruby(conf[3])
                end
              end
            end
            if conf.size == 1
              ret[key] = conf[0][1..-1]  # alias info
            else
              ret[key] = conf
            end
          }

          fontconf = ret['font']
          if fontconf
            ret.delete('font')
            ret.delete('kanjifont')
            fontconf[3] = tagfont_configinfo(tagid(tagOrId), fontconf[3])
            ret['font'] = fontconf
          end

          ret['coords'] = ['', '', '', self.coords(tagOrId)]

          ret
        end
      end
    end

    def current_itemconfiginfo(tagOrId, key=nil)
      if TkComm::GET_CONFIGINFO_AS_ARRAY
        if key
          conf = itemconfiginfo(tagOrId, key)
          {conf[0] => conf[4]}
        else
          ret = {}
          itemconfiginfo(tagOrId).each{|conf|
            ret[conf[0]] = conf[4] if conf.size > 2
          }
          ret
        end
      else # ! TkComm::GET_CONFIGINFO_AS_ARRAY
        ret = {}
        itemconfiginfo(tagOrId, key).each{|k, conf|
          ret[k] = conf[-1] if conf.kind_of?(Array)
        }
        ret
      end
    end

# end¶ ↑

                   # File tk/lib/tk/canvas.rb, line 532
    def lower(tag, below=nil)
      if below
        tk_send_without_enc('lower', tagid(tag), tagid(below))
      else
        tk_send_without_enc('lower', tagid(tag))
      end
      self
    end

move(tag, dx, dy) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 541
    def move(tag, dx, dy)
      tk_send_without_enc('move', tagid(tag), dx, dy)
      self
    end

move_to(tag, x, y) click to toggle source
Alias for: moveto
moveto(tag, x, y) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 546
    def moveto(tag, x, y)
      # Tcl/Tk 8.6 or later
      tk_send_without_enc('moveto', tagid(tag), x, y)
      self
    end

Also aliased as: move_to
postscript(keys) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 553
    def postscript(keys)
      tk_send("postscript", *hash_kv(keys))
    end

raise(tag, above=nil) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 557
    def raise(tag, above=nil)
      if above
        tk_send_without_enc('raise', tagid(tag), tagid(above))
      else
        tk_send_without_enc('raise', tagid(tag))
      end
      self
    end

rchars(tag, first, last, str_or_coords) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 566
    def rchars(tag, first, last, str_or_coords)
      # Tcl/Tk 8.6 or later
      str_or_coords = str_or_coords.flatten if str_or_coords.kinad_of? Array
      tk_send_without_enc('rchars', tagid(tag), first, last, str_or_coords)
      self
    end

Also aliased as: replace_chars, replace_coords
remove(*args) click to toggle source
Alias for: delete
replace_chars(tag, first, last, str_or_coords) click to toggle source
Alias for: rchars
replace_coords(tag, first, last, str_or_coords) click to toggle source
Alias for: rchars
scale(tag, x, y, xs, ys) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 575
    def scale(tag, x, y, xs, ys)
      tk_send_without_enc('scale', tagid(tag), x, y, xs, ys)
      self
    end

scan_dragto(x, y, gain=None) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 584
    def scan_dragto(x, y, gain=None)
      tk_send_without_enc('scan', 'dragto', x, y, gain)
      self
    end

scan_mark(x, y) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 580
    def scan_mark(x, y)
      tk_send_without_enc('scan', 'mark', x, y)
      self
    end

select(mode, *args) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 589
    def select(mode, *args)
      r = tk_send_without_enc('select', mode, *args)
      (mode == 'item')? TkcItem.id2obj(self, r): self
    end

select_adjust(tagOrId, index) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 593
    def select_adjust(tagOrId, index)
      select('adjust', tagid(tagOrId), index)
    end

select_clear() click to toggle source

                   # File tk/lib/tk/canvas.rb, line 596
    def select_clear
      select('clear')
    end

select_from(tagOrId, index) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 599
    def select_from(tagOrId, index)
      select('from', tagid(tagOrId), index)
    end

select_item() click to toggle source

                   # File tk/lib/tk/canvas.rb, line 602
    def select_item
      select('item')
    end

select_to(tagOrId, index) click to toggle source

                   # File tk/lib/tk/canvas.rb, line 605
    def select_to(tagOrId, index)
      select('to', tagid(tagOrId), index)
    end