AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-11-10 10:50:10 +00:00
Code Issues Projects Releases Wiki Activity
d20fdd18eb
gtk/gtk/gtkcellarea.h
Matthias Clasen f4d02bd9c1 GtkCellArea: allow finding attributes at runtime 
This will allow e.g. GtkInspector to display attribute mappings.

http://bugzilla.gnome.org/show_bug.cgi?id=729817
2014-05-08 14:09:04 -04:00

535 lines
34 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* gtkcellarea.h
*
* Copyright (C) 2010 Openismus GmbH
*
* Authors:
* Tristan Van Berkom <tristanvb@openismus.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GTK_CELL_AREA_H__
#define __GTK_CELL_AREA_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gtk/gtkcellrenderer.h>
#include <gtk/gtkwidget.h>
#include <gtk/gtktreemodel.h>
G_BEGIN_DECLS
#define GTK_TYPE_CELL_AREA (gtk_cell_area_get_type ())
#define GTK_CELL_AREA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CELL_AREA, GtkCellArea))
#define GTK_CELL_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CELL_AREA, GtkCellAreaClass))
#define GTK_IS_CELL_AREA(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CELL_AREA))
#define GTK_IS_CELL_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CELL_AREA))
#define GTK_CELL_AREA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CELL_AREA, GtkCellAreaClass))
typedef struct _GtkCellArea GtkCellArea;
typedef struct _GtkCellAreaClass GtkCellAreaClass;
typedef struct _GtkCellAreaPrivate GtkCellAreaPrivate;
typedef struct _GtkCellAreaContext GtkCellAreaContext;
/**
* GTK_CELL_AREA_WARN_INVALID_CELL_PROPERTY_ID:
* @object: the #GObject on which set_cell_property() or get_cell_property()
* was called
* @property_id: the numeric id of the property
* @pspec: the #GParamSpec of the property
*
* This macro should be used to emit a standard warning about unexpected
* properties in set_cell_property() and get_cell_property() implementations.
*/
#define GTK_CELL_AREA_WARN_INVALID_CELL_PROPERTY_ID(object, property_id, pspec) \
G_OBJECT_WARN_INVALID_PSPEC ((object), "cell property id", (property_id), (pspec))
/**
* GtkCellCallback:
* @renderer: the cell renderer to operate on
* @data: (closure): user-supplied data
*
* The type of the callback functions used for iterating over
* the cell renderers of a #GtkCellArea, see gtk_cell_area_foreach().
*
* Returns: %TRUE to stop iterating over cells.
*/
typedef gboolean (*GtkCellCallback) (GtkCellRenderer *renderer,
gpointer data);
/**
* GtkCellAllocCallback:
* @renderer: the cell renderer to operate on
* @cell_area: the area allocated to @renderer inside the rectangle
* provided to gtk_cell_area_foreach_alloc().
* @cell_background: the background area for @renderer inside the
* background area provided to gtk_cell_area_foreach_alloc().
* @data: (closure): user-supplied data
*
* The type of the callback functions used for iterating over the
* cell renderers and their allocated areas inside a #GtkCellArea,
* see gtk_cell_area_foreach_alloc().
*
* Returns: %TRUE to stop iterating over cells.
*/
typedef gboolean (*GtkCellAllocCallback) (GtkCellRenderer *renderer,
const GdkRectangle *cell_area,
const GdkRectangle *cell_background,
gpointer data);
struct _GtkCellArea
{
/*< private >*/
GInitiallyUnowned parent_instance;
GtkCellAreaPrivate *priv;
};
/**
* GtkCellAreaClass:
* @add: adds a #GtkCellRenderer to the area.
* @remove: removes a #GtkCellRenderer from the area.
* @foreach: calls the #GtkCellCallback function on every #GtkCellRenderer in
* the area with the provided user data until the callback returns %TRUE.
* @foreach_alloc: Calls the #GtkCellAllocCallback function on every
* #GtkCellRenderer in the area with the allocated area for the cell
* and the provided user data until the callback returns %TRUE.
* @event: Handle an event in the area, this is generally used to activate
* a cell at the event location for button events but can also be used
* to generically pass events to #GtkWidgets drawn onto the area.
* @render: Actually render the area’s cells to the specified rectangle,
* @background_area should be correctly distributed to the cells
* corresponding background areas.
* @apply_attributes: Apply the cell attributes to the cells. This is
* implemented as a signal and generally #GtkCellArea subclasses don't
* need to implement it since it is handled by the base class.
* @create_context: Creates and returns a class specific #GtkCellAreaContext
* to store cell alignment and allocation details for a said #GtkCellArea
* class.
* @copy_context: Creates a new #GtkCellAreaContext in the same state as
* the passed @context with any cell alignment data and allocations intact.
* @get_request_mode: This allows an area to tell its layouting widget whether
* it prefers to be allocated in %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH or
* %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT mode.
* @get_preferred_width: Calculates the minimum and natural width of the
* areas cells with the current attributes applied while considering
* the particular layouting details of the said #GtkCellArea. While
* requests are performed over a series of rows, alignments and overall
* minimum and natural sizes should be stored in the corresponding
* #GtkCellAreaContext.
* @get_preferred_height_for_width: Calculates the minimum and natural height
* for the area if the passed @context would be allocated the given width.
* When implementing this virtual method it is safe to assume that @context
* has already stored the aligned cell widths for every #GtkTreeModel row
* that @context will be allocated for since this information was stored
* at #GtkCellAreaClass.get_preferred_width() time. This virtual method
* should also store any necessary alignments of cell heights for the
* case that the context is allocated a height.
* @get_preferred_height: Calculates the minimum and natural height of the
* areas cells with the current attributes applied. Essentially this is
* the same as #GtkCellAreaClass.get_preferred_width() only for areas
* that are being requested as %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT.
* @get_preferred_width_for_height: Calculates the minimum and natural width
* for the area if the passed @context would be allocated the given
* height. The same as #GtkCellAreaClass.get_preferred_height_for_width()
* only for handling requests in the %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT
* mode.
* @set_cell_property: This should be implemented to handle changes in child
* cell properties for a given #GtkCellRenderer that were previously
* installed on the #GtkCellAreaClass with gtk_cell_area_class_install_cell_property().
* @get_cell_property: This should be implemented to report the values of
* child cell properties for a given child #GtkCellRenderer.
* @focus: This virtual method should be implemented to navigate focus from
* cell to cell inside the #GtkCellArea. The #GtkCellArea should move
* focus from cell to cell inside the area and return %FALSE if focus
* logically leaves the area with the following exceptions: When the
* area contains no activatable cells, the entire area recieves focus.
* Focus should not be given to cells that are actually “focus siblings”
* of other sibling cells (see gtk_cell_area_get_focus_from_sibling()).
* Focus is set by calling gtk_cell_area_set_focus_cell().
* @is_activatable: Returns whether the #GtkCellArea can respond to
* #GtkCellAreaClass.activate(), usually this does not need to be
* implemented since the base class takes care of this however it can
* be enhanced if the #GtkCellArea subclass can handle activation in
* other ways than activating its #GtkCellRenderers.
* @activate: This is called when the layouting widget rendering the
* #GtkCellArea activates the focus cell (see gtk_cell_area_get_focus_cell()).
*/
struct _GtkCellAreaClass
{
/*< private >*/
GInitiallyUnownedClass parent_class;
/*< public >*/
/* Basic methods */
void (* add) (GtkCellArea *area,
GtkCellRenderer *renderer);
void (* remove) (GtkCellArea *area,
GtkCellRenderer *renderer);
void (* foreach) (GtkCellArea *area,
GtkCellCallback callback,
gpointer callback_data);
void (* foreach_alloc) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
const GdkRectangle *background_area,
GtkCellAllocCallback callback,
gpointer callback_data);
gint (* event) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GdkEvent *event,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
void (* render) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
cairo_t *cr,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean paint_focus);
void (* apply_attributes) (GtkCellArea *area,
GtkTreeModel *tree_model,
GtkTreeIter *iter,
gboolean is_expander,
gboolean is_expanded);
/* Geometry */
GtkCellAreaContext *(* create_context) (GtkCellArea *area);
GtkCellAreaContext *(* copy_context) (GtkCellArea *area,
GtkCellAreaContext *context);
GtkSizeRequestMode (* get_request_mode) (GtkCellArea *area);
void (* get_preferred_width) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
void (* get_preferred_height_for_width) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
void (* get_preferred_height) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
void (* get_preferred_width_for_height) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
/* Cell Properties */
void (* set_cell_property) (GtkCellArea *area,
GtkCellRenderer *renderer,
guint property_id,
const GValue *value,
GParamSpec *pspec);
void (* get_cell_property) (GtkCellArea *area,
GtkCellRenderer *renderer,
guint property_id,
GValue *value,
GParamSpec *pspec);
/* Focus */
gboolean (* focus) (GtkCellArea *area,
GtkDirectionType direction);
gboolean (* is_activatable) (GtkCellArea *area);
gboolean (* activate) (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean edit_only);
/*< private >*/
/* Padding for future expansion */
void (*_gtk_reserved1) (void);
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
void (*_gtk_reserved4) (void);
void (*_gtk_reserved5) (void);
void (*_gtk_reserved6) (void);
void (*_gtk_reserved7) (void);
void (*_gtk_reserved8) (void);
};
GDK_AVAILABLE_IN_ALL
GType gtk_cell_area_get_type (void) G_GNUC_CONST;
/* Basic methods */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_add (GtkCellArea *area,
GtkCellRenderer *renderer);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_remove (GtkCellArea *area,
GtkCellRenderer *renderer);
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_has_renderer (GtkCellArea *area,
GtkCellRenderer *renderer);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_foreach (GtkCellArea *area,
GtkCellCallback callback,
gpointer callback_data);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_foreach_alloc (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
const GdkRectangle *background_area,
GtkCellAllocCallback callback,
gpointer callback_data);
GDK_AVAILABLE_IN_ALL
gint gtk_cell_area_event (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GdkEvent *event,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_render (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
cairo_t *cr,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean paint_focus);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_get_cell_allocation (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
GtkCellRenderer *renderer,
const GdkRectangle *cell_area,
GdkRectangle *allocation);
GDK_AVAILABLE_IN_ALL
GtkCellRenderer *gtk_cell_area_get_cell_at_position (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
gint x,
gint y,
GdkRectangle *alloc_area);
/* Geometry */
GDK_AVAILABLE_IN_ALL
GtkCellAreaContext *gtk_cell_area_create_context (GtkCellArea *area);
GDK_AVAILABLE_IN_ALL
GtkCellAreaContext *gtk_cell_area_copy_context (GtkCellArea *area,
GtkCellAreaContext *context);
GDK_AVAILABLE_IN_ALL
GtkSizeRequestMode gtk_cell_area_get_request_mode (GtkCellArea *area);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_get_preferred_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_width,
gint *natural_width);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_get_preferred_height_for_width (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint width,
gint *minimum_height,
gint *natural_height);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_get_preferred_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint *minimum_height,
gint *natural_height);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_get_preferred_width_for_height (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width);
GDK_AVAILABLE_IN_ALL
const gchar * gtk_cell_area_get_current_path_string (GtkCellArea *area);
/* Attributes */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_apply_attributes (GtkCellArea *area,
GtkTreeModel *tree_model,
GtkTreeIter *iter,
gboolean is_expander,
gboolean is_expanded);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_attribute_connect (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *attribute,
gint column);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_attribute_disconnect (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *attribute);
GDK_AVAILABLE_IN_3_14
gint gtk_cell_area_attribute_get_column (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *attribute);
/* Cell Properties */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_class_install_cell_property (GtkCellAreaClass *aclass,
guint property_id,
GParamSpec *pspec);
GDK_AVAILABLE_IN_ALL
GParamSpec* gtk_cell_area_class_find_cell_property (GtkCellAreaClass *aclass,
const gchar *property_name);
GDK_AVAILABLE_IN_ALL
GParamSpec** gtk_cell_area_class_list_cell_properties (GtkCellAreaClass *aclass,
guint *n_properties);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_add_with_properties (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *first_prop_name,
...) G_GNUC_NULL_TERMINATED;
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_set (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *first_prop_name,
...) G_GNUC_NULL_TERMINATED;
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_get (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *first_prop_name,
...) G_GNUC_NULL_TERMINATED;
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_set_valist (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *first_property_name,
va_list var_args);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_get_valist (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *first_property_name,
va_list var_args);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_set_property (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *property_name,
const GValue *value);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_cell_get_property (GtkCellArea *area,
GtkCellRenderer *renderer,
const gchar *property_name,
GValue *value);
/* Focus */
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_is_activatable (GtkCellArea *area);
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_activate (GtkCellArea *area,
GtkCellAreaContext *context,
GtkWidget *widget,
const GdkRectangle *cell_area,
GtkCellRendererState flags,
gboolean edit_only);
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_focus (GtkCellArea *area,
GtkDirectionType direction);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_set_focus_cell (GtkCellArea *area,
GtkCellRenderer *renderer);
GDK_AVAILABLE_IN_ALL
GtkCellRenderer *gtk_cell_area_get_focus_cell (GtkCellArea *area);
/* Focus siblings */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_add_focus_sibling (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellRenderer *sibling);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_remove_focus_sibling (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellRenderer *sibling);
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_is_focus_sibling (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellRenderer *sibling);
GDK_AVAILABLE_IN_ALL
const GList * gtk_cell_area_get_focus_siblings (GtkCellArea *area,
GtkCellRenderer *renderer);
GDK_AVAILABLE_IN_ALL
GtkCellRenderer *gtk_cell_area_get_focus_from_sibling (GtkCellArea *area,
GtkCellRenderer *renderer);
/* Cell Activation/Editing */
GDK_AVAILABLE_IN_ALL
GtkCellRenderer *gtk_cell_area_get_edited_cell (GtkCellArea *area);
GDK_AVAILABLE_IN_ALL
GtkCellEditable *gtk_cell_area_get_edit_widget (GtkCellArea *area);
GDK_AVAILABLE_IN_ALL
gboolean gtk_cell_area_activate_cell (GtkCellArea *area,
GtkWidget *widget,
GtkCellRenderer *renderer,
GdkEvent *event,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_stop_editing (GtkCellArea *area,
gboolean canceled);
/* Functions for area implementations */
/* Distinguish the inner cell area from the whole requested area including margins */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_inner_cell_area (GtkCellArea *area,
GtkWidget *widget,
const GdkRectangle *cell_area,
GdkRectangle *inner_area);
/* Request the size of a cell while respecting the cell margins (requests are margin inclusive) */
GDK_AVAILABLE_IN_ALL
void gtk_cell_area_request_renderer (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkOrientation orientation,
GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size);
/* For api stability, this is called from gtkcelllayout.c in order to ensure the correct
* object is passed to the user function in gtk_cell_layout_set_cell_data_func.
*
* This private api takes gpointer & GFunc arguments to circumvent circular header file
* dependancies.
*/
void _gtk_cell_area_set_cell_data_func_with_proxy (GtkCellArea *area,
GtkCellRenderer *cell,
GFunc func,
gpointer func_data,
GDestroyNotify destroy,
gpointer proxy);
G_END_DECLS
#endif /* __GTK_CELL_AREA_H__ */
Reference in New Issue View Git Blame Copy Permalink