gtk-0.12.4: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net
Safe Haskell | None

Graphics.UI.Gtk.ModelView.CellRenderer

Contents

- Detail
- Class Hierarchy
- Types
- Methods
- Attributes
- Signals
- Deprecated

Description

An object for rendering a cell in a list, icon or combo box widget.

Synopsis

- data CellRenderer
- class ObjectClass o => CellRendererClass o
- castToCellRenderer :: GObjectClass obj => obj -> CellRenderer
- gTypeCellRenderer :: GType
- toCellRenderer :: CellRendererClass o => o -> CellRenderer
- data CellRendererMode
- cellRendererStopEditing :: CellRendererClass self => self -> Bool -> IO ()
- cellRendererGetFixedSize :: CellRendererClass self => self -> IO (Int, Int)
- cellRendererSetFixedSize :: CellRendererClass self => self -> Int -> Int -> IO ()
- cellMode :: CellRendererClass self => Attr self CellRendererMode
- cellVisible :: CellRendererClass self => Attr self Bool
- cellSensitive :: CellRendererClass self => Attr self Bool
- cellXAlign :: CellRendererClass self => Attr self Float
- cellYAlign :: CellRendererClass self => Attr self Float
- cellXPad :: CellRendererClass self => Attr self Int
- cellYPad :: CellRendererClass self => Attr self Int
- cellWidth :: CellRendererClass self => Attr self Int
- cellHeight :: CellRendererClass self => Attr self Int
- cellIsExpander :: CellRendererClass self => Attr self Bool
- cellIsExpanded :: CellRendererClass self => Attr self Bool
- cellBackground :: CellRendererClass self => WriteAttr self String
- cellBackgroundColor :: CellRendererClass self => Attr self Color
- cellBackgroundSet :: CellRendererClass self => Attr self Bool
- editingStarted :: CellRendererClass self => Signal self (Widget -> TreePath -> IO ())
- editingCanceled :: CellRendererClass self => Signal self (IO ())
- onEditingStarted :: CellRendererClass self => self -> (Widget -> TreePath -> IO ()) -> IO (ConnectId self)
- afterEditingStarted :: CellRendererClass self => self -> (Widget -> TreePath -> IO ()) -> IO (ConnectId self)
- onEditingCanceled :: CellRendererClass self => self -> IO () -> IO (ConnectId self)
- afterEditingCanceled :: CellRendererClass self => self -> IO () -> IO (ConnectId self)

# Detail

The `CellRenderer` is a base class of a set of objects used for rendering a cell to a `Drawable`. These objects are used primarily by the `TreeView` widget, though they aren't tied to them in any specific way. It is worth noting that `CellRenderer` is not a `Widget` and cannot be treated as such.

The primary use of a `CellRenderer` is for drawing a certain graphical elements on a `Drawable`. Typically, one cell renderer is used to draw many cells on the screen. To this extent, it isn't expected that a `CellRenderer` keep any permanent state around. Instead, any state is set just prior to use by changing the attributes of the cell. Then, the cell is measured and rendered in the correct location.

Beyond merely rendering a cell, cell renderers can optionally provide active user interface elements. A cell renderer can be activatable like `CellRendererToggle`, which toggles when it gets activated by a mouse click, or it can be editable like `CellRendererText`, which allows the user to edit the text using a `Entry`.

# Class Hierarchy

     | GObject
     | +----Object
     | +----CellRenderer
     | +----CellRendererText
     | +----CellRendererPixbuf
     | +----CellRendererProgress
     | +----CellRendererCombo
     | +----CellRendererToggle

# Types

data CellRenderer

Instances

Eq CellRenderer |
Ord CellRenderer |
GObjectClass CellRenderer |
CellRendererClass CellRenderer |
ObjectClass CellRenderer |

class ObjectClass o => CellRendererClass o

Instances

CellRendererClass CellRendererProgress |
CellRendererClass CellRendererToggle |
CellRendererClass CellRendererCombo |
CellRendererClass CellRendererSpin |
CellRendererClass CellRendererAccel |
CellRendererClass CellRendererText |
CellRendererClass CellRendererPixbuf |
CellRendererClass CellRendererSpinner |
CellRendererClass CellRenderer |

castToCellRenderer :: GObjectClass obj => obj -> CellRenderer

gTypeCellRenderer :: GType

toCellRenderer :: CellRendererClass o => o -> CellRenderer

data CellRendererMode

Instances

Enum CellRendererMode |
Eq CellRendererMode |

# Methods

cellRendererStopEditing

Arguments

:: CellRendererClass self |
=> self |
-> Bool | `canceled` - `True` if the editing has been canceled
-> IO () |

Informs the cell renderer that the editing is stopped. If `canceled` is `True`, the cell renderer will emit the `editingCanceled` signal.

- Available since Gtk+ version 2.6

cellRendererGetFixedSize

Arguments

:: CellRendererClass self |
=> self |

-> IO (Int, Int)

    (width, height)

Returns `(width, height)` denoting the size of the fixed size of `cell`. If no fixed size is set, returns `-1` for that value.

cellRendererSetFixedSize

Arguments

:: CellRendererClass self |
=> self |
-> Int | `width` - the width of the cell renderer, or -1
-> Int | `height` - the height of the cell renderer, or -1
-> IO () |

Sets the renderer size to be explicit, independent of the properties set.

# Attributes

cellMode :: CellRendererClass self => Attr self CellRendererMode

Editable mode of the CellRenderer.

Default value: `CellRendererModeInert`

cellVisible :: CellRendererClass self => Attr self Bool

Display the cell.

Default value: `True`

cellSensitive :: CellRendererClass self => Attr self Bool

Display the cell sensitive.

Default value: `True`

cellXAlign :: CellRendererClass self => Attr self Float

The x-align.

Allowed values: `[0,1]`

Default value: `0.5`

cellYAlign :: CellRendererClass self => Attr self Float

The y-align.

Allowed values: `[0,1]`

Default value: `0.5`

cellXPad :: CellRendererClass self => Attr self Int

The xpad.

Default value: `0`

cellYPad :: CellRendererClass self => Attr self Int

The ypad.

Default value: `0`

cellWidth :: CellRendererClass self => Attr self Int

The fixed width.

Allowed values: `>= -1`

Default value: `-1`

cellHeight :: CellRendererClass self => Attr self Int

The fixed height.

Allowed values: `>= -1`

Default value: `-1`

cellIsExpander :: CellRendererClass self => Attr self Bool

Row has children.

Default value: `False`

cellIsExpanded :: CellRendererClass self => Attr self Bool

Row is an expander row, and is expanded.

Default value: `False`

cellBackground :: CellRendererClass self => WriteAttr self String

Cell background color as a string.

Default value: `""`

cellBackgroundColor :: CellRendererClass self => Attr self Color

Cell background color as a `Color`.

cellBackgroundSet :: CellRendererClass self => Attr self Bool

Whether the `cellBackground` / `cellBackgroundColor` attribute is set.

You can use this to reset the attribute to its default.

Default value: `False`

# Signals

editingStarted :: CellRendererClass self => Signal self (Widget -> TreePath -> IO ())

This signal gets emitted when a cell starts to be edited. The indended use of this signal is to do special setup on `editable`, e.g. adding a `EntryCompletion` or setting up additional columns in a `ComboBox`.

- The widget that is passed to the handler contains the widget that is used by the `CellRenderer` to interact with the user. The widget must be casted to the appropriate widget. For instance, a `CellRendererText` uses an `Entry` widget, while a `CellRendererCombo` uses a `ComboBox` (if `cellComboHasEntry` is `False`) or a `ComboBoxEntry` (if `cellComboHasEntry` is `True`).
- Available since Gtk+ version 2.6

editingCanceled :: CellRendererClass self => Signal self (IO ())

This signal gets emitted when the user cancels the process of editing a cell. For example, an editable cell renderer could be written to cancel editing when the user presses Escape.

- Available since Gtk+ version 2.4

# Deprecated

onEditingStarted :: CellRendererClass self => self -> (Widget -> TreePath -> IO ()) -> IO (ConnectId self)

Deprecated: instead of 'onEditingStarted obj' use 'on obj editingStarted'

afterEditingStarted :: CellRendererClass self => self -> (Widget -> TreePath -> IO ()) -> IO (ConnectId self)

Deprecated: instead of 'afterEditingStarted obj' use 'after obj editingStarted'

onEditingCanceled :: CellRendererClass self => self -> IO () -> IO (ConnectId self)

Deprecated: instead of 'onEditingCanceled obj' use 'on obj editingCanceled'

afterEditingCanceled :: CellRendererClass self => self -> IO () -> IO (ConnectId self)

Deprecated: instead of 'afterEditingCanceled obj' use 'after obj editingCanceled'