Sets our main struct and passes it to the parent class.
Passes an activate event to the cell renderer for possible processing. Some cell renderers may use events; for example, gtk.CellRendererToggle toggles when it gets a mouse click.
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.
This signal gets emitted when a cell starts to be edited. The intended use of this signal is to do special setup on editable, e.g. adding a gtk.EntryCompletion or setting up additional columns in a gtk.ComboBox
Gets the aligned area used by cell inside cell_area. Used for finding the appropriate edit and focus rectangle.
Fills in xalign and yalign with the appropriate values of cell.
Get the main Gtk struct
Fills in width and height with the appropriate size of cell.
Fills in xpad and ypad with the appropriate values of cell.
Retreives a renderer’s natural size when rendered to widget.
Retreives a cell renderers’s minimum and natural height if it were rendered to widget with the specified width.
Retrieves the minimum and natural size of a cell taking into account the widget’s preference for height-for-width management.
Retreives a renderer’s natural size when rendered to widget.
Retreives a cell renderers’s minimum and natural width if it were rendered to widget with the specified height.
Gets whether the cell renderer prefers a height-for-width layout or a width-for-height layout.
Returns the cell renderer’s sensitivity.
Obtains the width and height needed to render the cell. Used by view widgets to determine the appropriate size for the cell_area passed to CellRenderer.render. If cell_area is not NULL, fills in the x and y offsets (if set) of the cell relative to this location.
Translates the cell renderer state to GtkStateFlags, based on the cell renderer and widget sensitivity, and the given GtkCellRendererState
the main Gtk struct as a void*
Returns the cell renderer’s visibility.
Checks whether the cell renderer can do something when activated.
Invokes the virtual render function of the gtk.CellRenderer The three passed-in rectangles are areas in cr. Most renderers will draw within cell_area; the xalign, yalign, xpad, and ypad fields of the gtk.CellRenderer should be honored with respect to cell_area. background_area includes the blank space around the cell, and also the area containing the tree expander; so the background_area rectangles for all cells tile to cover the entire window.
Sets the renderer’s alignment within its available space.
Sets the renderer size to be explicit, independent of the properties set.
Sets the renderer’s padding.
Sets the cell renderer’s sensitivity.
Sets the cell renderer’s visibility.
Starts editing the contents of this cell, through a new GtkCellEditable widget created by the gtk.CellRendererClass.start_editing virtual function.
Informs the cell renderer that the editing is stopped. If canceled is TRUE, the cell renderer will emit the editing-canceled signal.
the main Gtk struct
the main Gtk struct
Get the main Gtk struct
the main Gtk struct as a void*
Gets a D Object from the objects table of associations.
The notify signal is emitted on an object when one of its properties has been changed. Note that getting this signal doesn't guarantee that the value of the property has actually changed, it may also be emitted when the setter for the property is called to reinstate the previous value.
Find the gobject.ParamSpec with the given name for an interface. Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created gobject.ParamSpec, but normally ObjectClass.overrideProperty will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
Lists the properties of an interface.Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
Increases the reference count of the object by one and sets a callback to be called when all other references to the object are dropped, or when this is already the last reference to the object and another reference is established.
Adds a weak reference from weak_pointer to object to indicate that the pointer located at weak_pointer_location is only valid during the lifetime of object. When the object is finalized, weak_pointer will be set to NULL.
Creates a binding between source_property on source and target_property on target. Whenever the source_property is changed the target_property is updated using the same value. For instance:
Complete version of g_object_bind_property().
Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.
This is a variant of g_object_get_data() which returns a 'duplicate' of the value. dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
This is a variant of g_object_get_qdata() which returns a 'duplicate' of the value. dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
This function is intended for GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one notify signal is emitted for each property modified while the object is frozen.
Gets a named field from the objects table of associations (see g_object_set_data()).
Gets a property of an object.
This function gets back user data pointers stored via g_object_set_qdata().
Gets properties of an object.
Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
Checks whether object has a floating[floating-ref] reference.
Emits a "notify" signal for the property property_name on object.
Emits a "notify" signal for the property specified by pspec on object.
Increases the reference count of object.
Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one.
Removes a weak reference from object that was previously added using g_object_add_weak_pointer(). The weak_pointer_location has to match the one used with g_object_add_weak_pointer().
Compares the user data for the key key on object with oldval, and if they are the same, replaces oldval with newval.
Compares the user data for the key quark on object with oldval, and if they are the same, replaces oldval with newval.
Releases all references to other objects. This can be used to break reference cycles.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
Like g_object_set_data() except it adds notification for when the association is destroyed, either by setting it to a different value or when the object is destroyed.
Sets a property on an object.
This sets an opaque, named pointer on an object. The name is specified through a GQuark (retrived e.g. via g_quark_from_static_string()), and the pointer can be gotten back from the object with g_object_get_qdata() until the object is finalized. Setting a previously set user data pointer, overrides (frees) the old pointer set, using NULL as pointer essentially removes the data stored.
This function works like g_object_set_qdata(), but in addition, a void (*destroy) (gpointer) function may be specified which is called with data as argument when the object is finalized, or the data is being overwritten by a call to g_object_set_qdata() with the same quark.
Sets properties on an object.
Sets n_properties properties for an object. Properties to be set will be taken from values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
This function gets back user data pointers stored via g_object_set_qdata() and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:
Reverts the effect of a previous call to g_object_freeze_notify(). The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
Decreases the reference count of object. When its reference count drops to 0, the object is finalized (i.e. its memory is freed).
This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, g_object_ref() and g_object_unref() are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
Adds a weak reference callback to an object. Weak references are used for notification when an object is finalized. They are called "weak references" because they allow you to safely hold a pointer to an object without calling g_object_ref() (g_object_ref() adds a strong reference, that is, forces the object to stay alive).
Removes a weak reference callback to an object.
Clears a reference to a GObject
The gtk.CellRenderer is a base class of a set of objects used for rendering a cell to a cairo_t These objects are used primarily by the gtk.TreeView widget, though they aren’t tied to them in any specific way. It is worth noting that gtk.CellRenderer is not a gtk.Widget and cannot be treated as such.
The primary use of a gtk.CellRenderer is for drawing a certain graphical elements on a cairo_t 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 using GObjects property system. Then, the cell is measured using CellRenderer.getSize. Finally, the cell is rendered in the correct location using CellRenderer.render.
There are a number of rules that must be followed when writing a new gtk.CellRenderer First and foremost, it’s important that a certain set of properties will always yield a cell renderer of the same size, barring a gtk.Style change. The gtk.CellRenderer also has a number of generic properties that are expected to be honored by all children.
Beyond merely rendering a cell, cell renderers can optionally provide active user interface elements. A cell renderer can be “activatable” like gtk.CellRendererToggle, which toggles when it gets activated by a mouse click, or it can be “editable” like gtk.CellRendererText, which allows the user to edit the text using a widget implementing the GtkCellEditable interface, e.g. gtk.Entry To make a cell renderer activatable or editable, you have to implement the gtk.CellRendererClass.activate or gtk.CellRendererClass.start_editing virtual functions, respectively.
Many properties of gtk.CellRenderer and its subclasses have a corresponding “set” property, e.g. “cell-background-set” corresponds to “cell-background”. These “set” properties reflect whether a property has been set or not. You should not set them independently.