Graphics.UI.Gtk.SourceView.SourceGutter

Description

The SourceGutter object represents the left and right gutters of the text view. It is used by SourceView to draw the line numbers and category marks that might be present on a line. By packing additional CellRenderer objects in the gutter, you can extend the gutter with your own custom drawings.

The gutter works very much the same way as cells rendered in a TreeView. The concept is similar, with the exception that the gutter does not have an underlying TreeModel. Instead, you should use sourceGutterSetCellDataFunc to set a callback to fill in any of the cell renderers properties, given the line for which the cell is to be rendered. Renderers are inserted into the gutter at a certain position. The builtin line number renderer is at position 'SourceViewGutterPositionLines (-30)' and the marks renderer is at 'SourceViewGutterPositionMarks (-20)'. You can use these values to position custom renderers accordingly. The width of a cell renderer can be specified as either fixed (using cellRendererSetFixedSize) or dynamic, in which case you must set sourceGutterSetCellSizeFunc. This callback is used to set the properties of the renderer such that gtkCellRendererGetSize yields the maximum width of the cell.

Types

data SourceGutter

Instances

Eq SourceGutter

Ord SourceGutter

GObjectClass SourceGutter

SourceGutterClass SourceGutter

class GObjectClass o => SourceGutterClass o

Instances

SourceGutterClass SourceGutter

Methods

sourceGutterGetWindow :: SourceGutterClass sg => sg -> IO (Maybe DrawWindow)

Get the Window of the gutter. The window will only be available when the gutter has at least one, non-zero width, cell renderer packed.

sourceGutterInsert

Arguments

:: (SourceGutterRendererClass cell, SourceGutterClass sg)

=> sg

-> cell

renderer a CellRenderer

-> Int

position the renderers position

-> IO Int

Inserts renderer into gutter at position.

sourceGutterReorder

Arguments

:: (SourceGutterRendererClass cell, SourceGutterClass sg)

=> sg

-> cell

renderer a CellRenderer

-> Int

position the new renderer position

-> IO ()

Reorders renderer in gutter to new position.

sourceGutterRemove

Arguments

:: (SourceGutterRendererClass cell, SourceGutterClass sg)

=> sg

-> cell

renderer a CellRenderer

-> IO ()

Removes renderer from gutter.

sourceGutterQueueDraw :: SourceGutterClass sg => sg -> IO ()

Invalidates the drawable area of the gutter. You can use this to force a redraw of the gutter if something has changed and needs to be redrawn.

Attributes

sourceGutterView :: SourceGutterClass sg => Attr sg SourceView

The SourceView of the gutter

sourceGutterWindowType :: SourceGutterClass sg => Attr sg TextWindowType

The text window type on which the window is placed

Default value: TextWindowPrivate

Signals

sourceGutterCellActivated :: SourceGutterClass sg => Signal sg (CellRenderer -> TextIter -> EventM EAny ())

Emitted when a cell has been activated (for instance when there was a button press on the cell). The signal is only emitted for cells that have the activatable property set to True.

sourceGutterQueryTooltip :: SourceGutterClass sg => Signal sg (CellRenderer -> TextIter -> Tooltip -> IO Bool)

Emitted when a tooltip is requested for a specific cell. Signal handlers can return True to notify the tooltip has been handled.