forked from AuroraMiddleware/gtk
3550 lines
128 KiB
C
3550 lines
128 KiB
C
/* gtkcellarea.c
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*
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* Copyright (C) 2010 Openismus GmbH
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*
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* Authors:
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* Tristan Van Berkom <tristanvb@openismus.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* SECTION:gtkcellarea
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* @Short_Description: An abstract class for laying out GtkCellRenderers
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* @Title: GtkCellArea
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*
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* The #GtkCellArea is an abstract class for #GtkCellLayout widgets
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* (also referred to as "layouting widgets") to interface with an
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* arbitrary number of #GtkCellRenderers and interact with the user
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* for a given #GtkTreeModel row.
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*
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* The cell area handles events, focus navigation, drawing and
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* size requests and allocations for a given row of data.
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*
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* Usually users dont have to interact with the #GtkCellArea directly
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* unless they are implementing a cell-layouting widget themselves.
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*
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* # Requesting area sizes
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*
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* As outlined in
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* [GtkWidget’s geometry management section][geometry-management],
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* GTK+ uses a height-for-width
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* geometry management system to compute the sizes of widgets and user
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* interfaces. #GtkCellArea uses the same semantics to calculate the
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* size of an area for an arbitrary number of #GtkTreeModel rows.
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*
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* When requesting the size of a cell area one needs to calculate
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* the size for a handful of rows, and this will be done differently by
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* different layouting widgets. For instance a #GtkTreeViewColumn
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* always lines up the areas from top to bottom while a #GtkIconView
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* on the other hand might enforce that all areas received the same
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* width and wrap the areas around, requesting height for more cell
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* areas when allocated less width.
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*
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* It’s also important for areas to maintain some cell
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* alignments with areas rendered for adjacent rows (cells can
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* appear “columnized” inside an area even when the size of
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* cells are different in each row). For this reason the #GtkCellArea
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* uses a #GtkCellAreaContext object to store the alignments
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* and sizes along the way (as well as the overall largest minimum
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* and natural size for all the rows which have been calculated
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* with the said context).
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*
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* The #GtkCellAreaContext is an opaque object specific to the
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* #GtkCellArea which created it (see gtk_cell_area_create_context()).
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* The owning cell-layouting widget can create as many contexts as
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* it wishes to calculate sizes of rows which should receive the
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* same size in at least one orientation (horizontally or vertically),
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* However, it’s important that the same #GtkCellAreaContext which
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* was used to request the sizes for a given #GtkTreeModel row be
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* used when rendering or processing events for that row.
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*
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* In order to request the width of all the rows at the root level
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* of a #GtkTreeModel one would do the following:
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*
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* |[<!-- language="C" -->
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* GtkTreeIter iter;
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* gint minimum_width;
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* gint natural_width;
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*
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* valid = gtk_tree_model_get_iter_first (model, &iter);
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* while (valid)
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* {
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* gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
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* gtk_cell_area_get_preferred_width (area, context, widget, NULL, NULL);
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*
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* valid = gtk_tree_model_iter_next (model, &iter);
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* }
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* gtk_cell_area_context_get_preferred_width (context, &minimum_width, &natural_width);
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* ]|
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*
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* Note that in this example it’s not important to observe the
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* returned minimum and natural width of the area for each row
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* unless the cell-layouting object is actually interested in the
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* widths of individual rows. The overall width is however stored
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* in the accompanying #GtkCellAreaContext object and can be consulted
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* at any time.
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*
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* This can be useful since #GtkCellLayout widgets usually have to
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* support requesting and rendering rows in treemodels with an
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* exceedingly large amount of rows. The #GtkCellLayout widget in
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* that case would calculate the required width of the rows in an
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* idle or timeout source (see g_timeout_add()) and when the widget
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* is requested its actual width in #GtkWidgetClass.get_preferred_width()
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* it can simply consult the width accumulated so far in the
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* #GtkCellAreaContext object.
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*
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* A simple example where rows are rendered from top to bottom and
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* take up the full width of the layouting widget would look like:
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*
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* |[<!-- language="C" -->
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* static void
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* foo_get_preferred_width (GtkWidget *widget,
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* gint *minimum_size,
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* gint *natural_size)
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* {
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* Foo *foo = FOO (widget);
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* FooPrivate *priv = foo->priv;
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*
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* foo_ensure_at_least_one_handfull_of_rows_have_been_requested (foo);
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*
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* gtk_cell_area_context_get_preferred_width (priv->context, minimum_size, natural_size);
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* }
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* ]|
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*
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* In the above example the Foo widget has to make sure that some
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* row sizes have been calculated (the amount of rows that Foo judged
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* was appropriate to request space for in a single timeout iteration)
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* before simply returning the amount of space required by the area via
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* the #GtkCellAreaContext.
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*
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* Requesting the height for width (or width for height) of an area is
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* a similar task except in this case the #GtkCellAreaContext does not
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* store the data (actually, it does not know how much space the layouting
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* widget plans to allocate it for every row. It’s up to the layouting
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* widget to render each row of data with the appropriate height and
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* width which was requested by the #GtkCellArea).
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*
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* In order to request the height for width of all the rows at the
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* root level of a #GtkTreeModel one would do the following:
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*
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* |[<!-- language="C" -->
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* GtkTreeIter iter;
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* gint minimum_height;
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* gint natural_height;
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* gint full_minimum_height = 0;
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* gint full_natural_height = 0;
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*
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* valid = gtk_tree_model_get_iter_first (model, &iter);
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* while (valid)
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* {
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* gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
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* gtk_cell_area_get_preferred_height_for_width (area, context, widget,
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* width, &minimum_height, &natural_height);
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*
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* if (width_is_for_allocation)
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* cache_row_height (&iter, minimum_height, natural_height);
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*
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* full_minimum_height += minimum_height;
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* full_natural_height += natural_height;
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*
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* valid = gtk_tree_model_iter_next (model, &iter);
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* }
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* ]|
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*
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* Note that in the above example we would need to cache the heights
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* returned for each row so that we would know what sizes to render the
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* areas for each row. However we would only want to really cache the
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* heights if the request is intended for the layouting widgets real
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* allocation.
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*
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* In some cases the layouting widget is requested the height for an
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* arbitrary for_width, this is a special case for layouting widgets
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* who need to request size for tens of thousands of rows. For this
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* case it’s only important that the layouting widget calculate
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* one reasonably sized chunk of rows and return that height
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* synchronously. The reasoning here is that any layouting widget is
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* at least capable of synchronously calculating enough height to fill
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* the screen height (or scrolled window height) in response to a single
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* call to #GtkWidgetClass.get_preferred_height_for_width(). Returning
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* a perfect height for width that is larger than the screen area is
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* inconsequential since after the layouting receives an allocation
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* from a scrolled window it simply continues to drive the scrollbar
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* values while more and more height is required for the row heights
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* that are calculated in the background.
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*
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* # Rendering Areas
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*
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* Once area sizes have been aquired at least for the rows in the
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* visible area of the layouting widget they can be rendered at
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* #GtkWidgetClass.draw() time.
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*
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* A crude example of how to render all the rows at the root level
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* runs as follows:
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*
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* |[<!-- language="C" -->
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* GtkAllocation allocation;
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* GdkRectangle cell_area = { 0, };
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* GtkTreeIter iter;
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* gint minimum_width;
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* gint natural_width;
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*
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* gtk_widget_get_allocation (widget, &allocation);
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* cell_area.width = allocation.width;
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*
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* valid = gtk_tree_model_get_iter_first (model, &iter);
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* while (valid)
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* {
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* cell_area.height = get_cached_height_for_row (&iter);
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*
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* gtk_cell_area_apply_attributes (area, model, &iter, FALSE, FALSE);
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* gtk_cell_area_render (area, context, widget, cr,
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* &cell_area, &cell_area, state_flags, FALSE);
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*
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* cell_area.y += cell_area.height;
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*
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* valid = gtk_tree_model_iter_next (model, &iter);
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* }
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* ]|
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*
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* Note that the cached height in this example really depends on how
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* the layouting widget works. The layouting widget might decide to
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* give every row its minimum or natural height or, if the model content
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* is expected to fit inside the layouting widget without scrolling, it
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* would make sense to calculate the allocation for each row at
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* the time the widget is allocated using gtk_distribute_natural_allocation().
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*
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* # Handling Events and Driving Keyboard Focus
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*
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* Passing events to the area is as simple as handling events on any
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* normal widget and then passing them to the gtk_cell_area_event()
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* API as they come in. Usually #GtkCellArea is only interested in
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* button events, however some customized derived areas can be implemented
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* who are interested in handling other events. Handling an event can
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* trigger the #GtkCellArea::focus-changed signal to fire; as well as
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* #GtkCellArea::add-editable in the case that an editable cell was
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* clicked and needs to start editing. You can call
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* gtk_cell_area_stop_editing() at any time to cancel any cell editing
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* that is currently in progress.
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*
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* The #GtkCellArea drives keyboard focus from cell to cell in a way
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* similar to #GtkWidget. For layouting widgets that support giving
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* focus to cells it’s important to remember to pass %GTK_CELL_RENDERER_FOCUSED
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* to the area functions for the row that has focus and to tell the
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* area to paint the focus at render time.
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*
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* Layouting widgets that accept focus on cells should implement the
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* #GtkWidgetClass.focus() virtual method. The layouting widget is always
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* responsible for knowing where #GtkTreeModel rows are rendered inside
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* the widget, so at #GtkWidgetClass.focus() time the layouting widget
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* should use the #GtkCellArea methods to navigate focus inside the area
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* and then observe the GtkDirectionType to pass the focus to adjacent
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* rows and areas.
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*
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* A basic example of how the #GtkWidgetClass.focus() virtual method
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* should be implemented:
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*
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* |[<!-- language="C" -->
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* static gboolean
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* foo_focus (GtkWidget *widget,
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* GtkDirectionType direction)
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* {
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* Foo *foo = FOO (widget);
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* FooPrivate *priv = foo->priv;
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* gint focus_row;
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* gboolean have_focus = FALSE;
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*
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* focus_row = priv->focus_row;
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*
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* if (!gtk_widget_has_focus (widget))
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* gtk_widget_grab_focus (widget);
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*
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* valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, priv->focus_row);
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* while (valid)
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* {
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* gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
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*
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* if (gtk_cell_area_focus (priv->area, direction))
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* {
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* priv->focus_row = focus_row;
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* have_focus = TRUE;
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* break;
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* }
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* else
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* {
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* if (direction == GTK_DIR_RIGHT ||
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* direction == GTK_DIR_LEFT)
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* break;
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* else if (direction == GTK_DIR_UP ||
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* direction == GTK_DIR_TAB_BACKWARD)
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* {
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* if (focus_row == 0)
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* break;
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* else
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* {
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* focus_row--;
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* valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, focus_row);
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* }
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* }
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* else
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* {
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* if (focus_row == last_row)
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* break;
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* else
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* {
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* focus_row++;
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* valid = gtk_tree_model_iter_next (priv->model, &iter);
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* }
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* }
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* }
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* }
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* return have_focus;
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* }
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* ]|
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*
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* Note that the layouting widget is responsible for matching the
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* GtkDirectionType values to the way it lays out its cells.
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*
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* # Cell Properties
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*
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* The #GtkCellArea introduces cell properties for #GtkCellRenderers
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* in very much the same way that #GtkContainer introduces
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* [child properties][child-properties]
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* for #GtkWidgets. This provides some general interfaces for defining
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* the relationship cell areas have with their cells. For instance in a
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* #GtkCellAreaBox a cell might “expand” and receive extra space when
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* the area is allocated more than its full natural request, or a cell
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* might be configured to “align” with adjacent rows which were requested
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* and rendered with the same #GtkCellAreaContext.
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*
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* Use gtk_cell_area_class_install_cell_property() to install cell
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* properties for a cell area class and gtk_cell_area_class_find_cell_property()
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* or gtk_cell_area_class_list_cell_properties() to get information about
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* existing cell properties.
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*
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* To set the value of a cell property, use gtk_cell_area_cell_set_property(),
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* gtk_cell_area_cell_set() or gtk_cell_area_cell_set_valist(). To obtain
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* the value of a cell property, use gtk_cell_area_cell_get_property(),
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* gtk_cell_area_cell_get() or gtk_cell_area_cell_get_valist().
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*/
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#include "config.h"
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include "gtkintl.h"
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#include "gtkcelllayout.h"
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#include "gtkcellarea.h"
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#include "gtkcellareacontext.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtksnapshot.h"
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#include "gtkstylecontext.h"
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#include <gobject/gvaluecollector.h>
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/* GObjectClass */
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static void gtk_cell_area_dispose (GObject *object);
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static void gtk_cell_area_finalize (GObject *object);
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static void gtk_cell_area_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
|
||
GParamSpec *pspec);
|
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static void gtk_cell_area_get_property (GObject *object,
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guint prop_id,
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||
GValue *value,
|
||
GParamSpec *pspec);
|
||
|
||
/* GtkCellAreaClass */
|
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static void gtk_cell_area_real_add (GtkCellArea *area,
|
||
GtkCellRenderer *renderer);
|
||
static void gtk_cell_area_real_remove (GtkCellArea *area,
|
||
GtkCellRenderer *renderer);
|
||
static void gtk_cell_area_real_foreach (GtkCellArea *area,
|
||
GtkCellCallback callback,
|
||
gpointer callback_data);
|
||
static void gtk_cell_area_real_foreach_alloc (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
const GdkRectangle *background_area,
|
||
GtkCellAllocCallback callback,
|
||
gpointer callback_data);
|
||
static gint gtk_cell_area_real_event (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GdkEvent *event,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags);
|
||
static void gtk_cell_area_real_snapshot (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GtkSnapshot *snapshot,
|
||
const GdkRectangle *background_area,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean paint_focus);
|
||
static void gtk_cell_area_real_apply_attributes (GtkCellArea *area,
|
||
GtkTreeModel *tree_model,
|
||
GtkTreeIter *iter,
|
||
gboolean is_expander,
|
||
gboolean is_expanded);
|
||
|
||
static GtkCellAreaContext *gtk_cell_area_real_create_context (GtkCellArea *area);
|
||
static GtkCellAreaContext *gtk_cell_area_real_copy_context (GtkCellArea *area,
|
||
GtkCellAreaContext *context);
|
||
static GtkSizeRequestMode gtk_cell_area_real_get_request_mode (GtkCellArea *area);
|
||
static void gtk_cell_area_real_get_preferred_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_width,
|
||
gint *natural_width);
|
||
static void gtk_cell_area_real_get_preferred_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_height,
|
||
gint *natural_height);
|
||
static void gtk_cell_area_real_get_preferred_height_for_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint width,
|
||
gint *minimum_height,
|
||
gint *natural_height);
|
||
static void gtk_cell_area_real_get_preferred_width_for_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint height,
|
||
gint *minimum_width,
|
||
gint *natural_width);
|
||
static gboolean gtk_cell_area_real_is_activatable (GtkCellArea *area);
|
||
static gboolean gtk_cell_area_real_activate (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean edit_only);
|
||
static gboolean gtk_cell_area_real_focus (GtkCellArea *area,
|
||
GtkDirectionType direction);
|
||
|
||
/* GtkCellLayoutIface */
|
||
static void gtk_cell_area_cell_layout_init (GtkCellLayoutIface *iface);
|
||
static void gtk_cell_area_pack_default (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer,
|
||
gboolean expand);
|
||
static void gtk_cell_area_clear (GtkCellLayout *cell_layout);
|
||
static void gtk_cell_area_add_attribute (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *attribute,
|
||
gint column);
|
||
static void gtk_cell_area_set_cell_data_func (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *cell,
|
||
GtkCellLayoutDataFunc func,
|
||
gpointer func_data,
|
||
GDestroyNotify destroy);
|
||
static void gtk_cell_area_clear_attributes (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer);
|
||
static void gtk_cell_area_reorder (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *cell,
|
||
gint position);
|
||
static GList *gtk_cell_area_get_cells (GtkCellLayout *cell_layout);
|
||
static GtkCellArea *gtk_cell_area_get_area (GtkCellLayout *cell_layout);
|
||
|
||
/* GtkBuildableIface */
|
||
static void gtk_cell_area_buildable_init (GtkBuildableIface *iface);
|
||
static void gtk_cell_area_buildable_custom_tag_end (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer data);
|
||
|
||
/* Used in foreach loop to check if a child renderer is present */
|
||
typedef struct {
|
||
GtkCellRenderer *renderer;
|
||
gboolean has_renderer;
|
||
} HasRendererCheck;
|
||
|
||
/* Used in foreach loop to get a cell's allocation */
|
||
typedef struct {
|
||
GtkCellRenderer *renderer;
|
||
GdkRectangle allocation;
|
||
} RendererAllocationData;
|
||
|
||
/* Used in foreach loop to render cells */
|
||
typedef struct {
|
||
GtkCellArea *area;
|
||
GtkWidget *widget;
|
||
GtkSnapshot *snapshot;
|
||
GdkRectangle focus_rect;
|
||
GtkCellRendererState render_flags;
|
||
guint paint_focus : 1;
|
||
guint focus_all : 1;
|
||
guint first_focus : 1;
|
||
} CellRenderData;
|
||
|
||
/* Used in foreach loop to get a cell by position */
|
||
typedef struct {
|
||
gint x;
|
||
gint y;
|
||
GtkCellRenderer *renderer;
|
||
GdkRectangle cell_area;
|
||
} CellByPositionData;
|
||
|
||
/* Attribute/Cell metadata */
|
||
typedef struct {
|
||
const gchar *attribute;
|
||
gint column;
|
||
} CellAttribute;
|
||
|
||
typedef struct {
|
||
GSList *attributes;
|
||
|
||
GtkCellLayoutDataFunc func;
|
||
gpointer data;
|
||
GDestroyNotify destroy;
|
||
GtkCellLayout *proxy;
|
||
} CellInfo;
|
||
|
||
static CellInfo *cell_info_new (GtkCellLayoutDataFunc func,
|
||
gpointer data,
|
||
GDestroyNotify destroy);
|
||
static void cell_info_free (CellInfo *info);
|
||
static CellAttribute *cell_attribute_new (GtkCellRenderer *renderer,
|
||
const gchar *attribute,
|
||
gint column);
|
||
static void cell_attribute_free (CellAttribute *attribute);
|
||
static gint cell_attribute_find (CellAttribute *cell_attribute,
|
||
const gchar *attribute);
|
||
|
||
/* Internal functions/signal emissions */
|
||
static void gtk_cell_area_add_editable (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellEditable *editable,
|
||
const GdkRectangle *cell_area);
|
||
static void gtk_cell_area_remove_editable (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellEditable *editable);
|
||
static void gtk_cell_area_set_edit_widget (GtkCellArea *area,
|
||
GtkCellEditable *editable);
|
||
static void gtk_cell_area_set_edited_cell (GtkCellArea *area,
|
||
GtkCellRenderer *renderer);
|
||
|
||
|
||
/* Struct to pass data along while looping over
|
||
* cell renderers to apply attributes
|
||
*/
|
||
typedef struct {
|
||
GtkCellArea *area;
|
||
GtkTreeModel *model;
|
||
GtkTreeIter *iter;
|
||
gboolean is_expander;
|
||
gboolean is_expanded;
|
||
} AttributeData;
|
||
|
||
typedef struct _GtkCellAreaPrivate GtkCellAreaPrivate;
|
||
|
||
struct _GtkCellAreaPrivate
|
||
{
|
||
/* The GtkCellArea bookkeeps any connected
|
||
* attributes in this hash table.
|
||
*/
|
||
GHashTable *cell_info;
|
||
|
||
/* Current path is saved as a side-effect
|
||
* of gtk_cell_area_apply_attributes()
|
||
*/
|
||
gchar *current_path;
|
||
|
||
/* Current cell being edited and editable widget used */
|
||
GtkCellEditable *edit_widget;
|
||
GtkCellRenderer *edited_cell;
|
||
|
||
/* Signal connections to the editable widget */
|
||
gulong remove_widget_id;
|
||
|
||
/* Currently focused cell */
|
||
GtkCellRenderer *focus_cell;
|
||
|
||
/* Tracking which cells are focus siblings of focusable cells */
|
||
GHashTable *focus_siblings;
|
||
};
|
||
|
||
enum {
|
||
PROP_0,
|
||
PROP_FOCUS_CELL,
|
||
PROP_EDITED_CELL,
|
||
PROP_EDIT_WIDGET
|
||
};
|
||
|
||
enum {
|
||
SIGNAL_APPLY_ATTRIBUTES,
|
||
SIGNAL_ADD_EDITABLE,
|
||
SIGNAL_REMOVE_EDITABLE,
|
||
SIGNAL_FOCUS_CHANGED,
|
||
LAST_SIGNAL
|
||
};
|
||
|
||
/* Keep the paramspec pool internal, no need to deliver notifications
|
||
* on cells. at least no perceived need for now
|
||
*/
|
||
static GParamSpecPool *cell_property_pool = NULL;
|
||
static guint cell_area_signals[LAST_SIGNAL] = { 0 };
|
||
|
||
#define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
|
||
#define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
|
||
|
||
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkCellArea, gtk_cell_area, G_TYPE_INITIALLY_UNOWNED,
|
||
G_ADD_PRIVATE (GtkCellArea)
|
||
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
|
||
gtk_cell_area_cell_layout_init)
|
||
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
|
||
gtk_cell_area_buildable_init))
|
||
|
||
static void
|
||
gtk_cell_area_init (GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
priv->cell_info = g_hash_table_new_full (g_direct_hash,
|
||
g_direct_equal,
|
||
NULL,
|
||
(GDestroyNotify)cell_info_free);
|
||
|
||
priv->focus_siblings = g_hash_table_new_full (g_direct_hash,
|
||
g_direct_equal,
|
||
NULL,
|
||
(GDestroyNotify)g_list_free);
|
||
|
||
priv->focus_cell = NULL;
|
||
priv->edited_cell = NULL;
|
||
priv->edit_widget = NULL;
|
||
|
||
priv->remove_widget_id = 0;
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_class_init (GtkCellAreaClass *class)
|
||
{
|
||
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
||
|
||
/* GObjectClass */
|
||
object_class->dispose = gtk_cell_area_dispose;
|
||
object_class->finalize = gtk_cell_area_finalize;
|
||
object_class->get_property = gtk_cell_area_get_property;
|
||
object_class->set_property = gtk_cell_area_set_property;
|
||
|
||
/* general */
|
||
class->add = gtk_cell_area_real_add;
|
||
class->remove = gtk_cell_area_real_remove;
|
||
class->foreach = gtk_cell_area_real_foreach;
|
||
class->foreach_alloc = gtk_cell_area_real_foreach_alloc;
|
||
class->event = gtk_cell_area_real_event;
|
||
class->snapshot = gtk_cell_area_real_snapshot;
|
||
class->apply_attributes = gtk_cell_area_real_apply_attributes;
|
||
|
||
/* geometry */
|
||
class->create_context = gtk_cell_area_real_create_context;
|
||
class->copy_context = gtk_cell_area_real_copy_context;
|
||
class->get_request_mode = gtk_cell_area_real_get_request_mode;
|
||
class->get_preferred_width = gtk_cell_area_real_get_preferred_width;
|
||
class->get_preferred_height = gtk_cell_area_real_get_preferred_height;
|
||
class->get_preferred_height_for_width = gtk_cell_area_real_get_preferred_height_for_width;
|
||
class->get_preferred_width_for_height = gtk_cell_area_real_get_preferred_width_for_height;
|
||
|
||
/* focus */
|
||
class->is_activatable = gtk_cell_area_real_is_activatable;
|
||
class->activate = gtk_cell_area_real_activate;
|
||
class->focus = gtk_cell_area_real_focus;
|
||
|
||
/* Signals */
|
||
/**
|
||
* GtkCellArea::apply-attributes:
|
||
* @area: the #GtkCellArea to apply the attributes to
|
||
* @model: the #GtkTreeModel to apply the attributes from
|
||
* @iter: the #GtkTreeIter indicating which row to apply the attributes of
|
||
* @is_expander: whether the view shows children for this row
|
||
* @is_expanded: whether the view is currently showing the children of this row
|
||
*
|
||
* This signal is emitted whenever applying attributes to @area from @model
|
||
*/
|
||
cell_area_signals[SIGNAL_APPLY_ATTRIBUTES] =
|
||
g_signal_new (I_("apply-attributes"),
|
||
G_OBJECT_CLASS_TYPE (object_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
G_STRUCT_OFFSET (GtkCellAreaClass, apply_attributes),
|
||
NULL, NULL,
|
||
_gtk_marshal_VOID__OBJECT_BOXED_BOOLEAN_BOOLEAN,
|
||
G_TYPE_NONE, 4,
|
||
GTK_TYPE_TREE_MODEL,
|
||
GTK_TYPE_TREE_ITER,
|
||
G_TYPE_BOOLEAN,
|
||
G_TYPE_BOOLEAN);
|
||
g_signal_set_va_marshaller (cell_area_signals[SIGNAL_APPLY_ATTRIBUTES], G_TYPE_FROM_CLASS (class),
|
||
_gtk_marshal_VOID__OBJECT_BOXED_BOOLEAN_BOOLEANv);
|
||
|
||
/**
|
||
* GtkCellArea::add-editable:
|
||
* @area: the #GtkCellArea where editing started
|
||
* @renderer: the #GtkCellRenderer that started the edited
|
||
* @editable: the #GtkCellEditable widget to add
|
||
* @cell_area: the #GtkWidget relative #GdkRectangle coordinates
|
||
* where @editable should be added
|
||
* @path: the #GtkTreePath string this edit was initiated for
|
||
*
|
||
* Indicates that editing has started on @renderer and that @editable
|
||
* should be added to the owning cell-layouting widget at @cell_area.
|
||
*/
|
||
cell_area_signals[SIGNAL_ADD_EDITABLE] =
|
||
g_signal_new (I_("add-editable"),
|
||
G_OBJECT_CLASS_TYPE (object_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
0, /* No class closure here */
|
||
NULL, NULL,
|
||
_gtk_marshal_VOID__OBJECT_OBJECT_BOXED_STRING,
|
||
G_TYPE_NONE, 4,
|
||
GTK_TYPE_CELL_RENDERER,
|
||
GTK_TYPE_CELL_EDITABLE,
|
||
GDK_TYPE_RECTANGLE,
|
||
G_TYPE_STRING);
|
||
|
||
|
||
/**
|
||
* GtkCellArea::remove-editable:
|
||
* @area: the #GtkCellArea where editing finished
|
||
* @renderer: the #GtkCellRenderer that finished editeding
|
||
* @editable: the #GtkCellEditable widget to remove
|
||
*
|
||
* Indicates that editing finished on @renderer and that @editable
|
||
* should be removed from the owning cell-layouting widget.
|
||
*/
|
||
cell_area_signals[SIGNAL_REMOVE_EDITABLE] =
|
||
g_signal_new (I_("remove-editable"),
|
||
G_OBJECT_CLASS_TYPE (object_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
0, /* No class closure here */
|
||
NULL, NULL,
|
||
_gtk_marshal_VOID__OBJECT_OBJECT,
|
||
G_TYPE_NONE, 2,
|
||
GTK_TYPE_CELL_RENDERER,
|
||
GTK_TYPE_CELL_EDITABLE);
|
||
|
||
/**
|
||
* GtkCellArea::focus-changed:
|
||
* @area: the #GtkCellArea where focus changed
|
||
* @renderer: the #GtkCellRenderer that has focus
|
||
* @path: the current #GtkTreePath string set for @area
|
||
*
|
||
* Indicates that focus changed on this @area. This signal
|
||
* is emitted either as a result of focus handling or event
|
||
* handling.
|
||
*
|
||
* It's possible that the signal is emitted even if the
|
||
* currently focused renderer did not change, this is
|
||
* because focus may change to the same renderer in the
|
||
* same cell area for a different row of data.
|
||
*/
|
||
cell_area_signals[SIGNAL_FOCUS_CHANGED] =
|
||
g_signal_new (I_("focus-changed"),
|
||
G_OBJECT_CLASS_TYPE (object_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
0, /* No class closure here */
|
||
NULL, NULL,
|
||
_gtk_marshal_VOID__OBJECT_STRING,
|
||
G_TYPE_NONE, 2,
|
||
GTK_TYPE_CELL_RENDERER,
|
||
G_TYPE_STRING);
|
||
|
||
/* Properties */
|
||
/**
|
||
* GtkCellArea:focus-cell:
|
||
*
|
||
* The cell in the area that currently has focus
|
||
*/
|
||
g_object_class_install_property (object_class,
|
||
PROP_FOCUS_CELL,
|
||
g_param_spec_object ("focus-cell",
|
||
P_("Focus Cell"),
|
||
P_("The cell which currently has focus"),
|
||
GTK_TYPE_CELL_RENDERER,
|
||
GTK_PARAM_READWRITE));
|
||
|
||
/**
|
||
* GtkCellArea:edited-cell:
|
||
*
|
||
* The cell in the area that is currently edited
|
||
*
|
||
* This property is read-only and only changes as
|
||
* a result of a call gtk_cell_area_activate_cell().
|
||
*/
|
||
g_object_class_install_property (object_class,
|
||
PROP_EDITED_CELL,
|
||
g_param_spec_object ("edited-cell",
|
||
P_("Edited Cell"),
|
||
P_("The cell which is currently being edited"),
|
||
GTK_TYPE_CELL_RENDERER,
|
||
GTK_PARAM_READABLE));
|
||
|
||
/**
|
||
* GtkCellArea:edit-widget:
|
||
*
|
||
* The widget currently editing the edited cell
|
||
*
|
||
* This property is read-only and only changes as
|
||
* a result of a call gtk_cell_area_activate_cell().
|
||
*/
|
||
g_object_class_install_property (object_class,
|
||
PROP_EDIT_WIDGET,
|
||
g_param_spec_object ("edit-widget",
|
||
P_("Edit Widget"),
|
||
P_("The widget currently editing the edited cell"),
|
||
GTK_TYPE_CELL_EDITABLE,
|
||
GTK_PARAM_READABLE));
|
||
|
||
/* Pool for Cell Properties */
|
||
if (!cell_property_pool)
|
||
cell_property_pool = g_param_spec_pool_new (FALSE);
|
||
}
|
||
|
||
/*************************************************************
|
||
* CellInfo Basics *
|
||
*************************************************************/
|
||
static CellInfo *
|
||
cell_info_new (GtkCellLayoutDataFunc func,
|
||
gpointer data,
|
||
GDestroyNotify destroy)
|
||
{
|
||
CellInfo *info = g_slice_new0 (CellInfo);
|
||
|
||
info->func = func;
|
||
info->data = data;
|
||
info->destroy = destroy;
|
||
|
||
return info;
|
||
}
|
||
|
||
static void
|
||
cell_info_free (CellInfo *info)
|
||
{
|
||
if (info->destroy)
|
||
info->destroy (info->data);
|
||
|
||
g_slist_free_full (info->attributes, (GDestroyNotify)cell_attribute_free);
|
||
|
||
g_slice_free (CellInfo, info);
|
||
}
|
||
|
||
static CellAttribute *
|
||
cell_attribute_new (GtkCellRenderer *renderer,
|
||
const gchar *attribute,
|
||
gint column)
|
||
{
|
||
GParamSpec *pspec;
|
||
|
||
/* Check if the attribute really exists and point to
|
||
* the property string installed on the cell renderer
|
||
* class (dont dup the string)
|
||
*/
|
||
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (renderer), attribute);
|
||
|
||
if (pspec)
|
||
{
|
||
CellAttribute *cell_attribute = g_slice_new (CellAttribute);
|
||
|
||
cell_attribute->attribute = pspec->name;
|
||
cell_attribute->column = column;
|
||
|
||
return cell_attribute;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
cell_attribute_free (CellAttribute *attribute)
|
||
{
|
||
g_slice_free (CellAttribute, attribute);
|
||
}
|
||
|
||
/* GCompareFunc for g_slist_find_custom() */
|
||
static gint
|
||
cell_attribute_find (CellAttribute *cell_attribute,
|
||
const gchar *attribute)
|
||
{
|
||
return g_strcmp0 (cell_attribute->attribute, attribute);
|
||
}
|
||
|
||
/*************************************************************
|
||
* GObjectClass *
|
||
*************************************************************/
|
||
static void
|
||
gtk_cell_area_finalize (GObject *object)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (object);
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
/* All cell renderers should already be removed at this point,
|
||
* just kill our (empty) hash tables here.
|
||
*/
|
||
g_hash_table_destroy (priv->cell_info);
|
||
g_hash_table_destroy (priv->focus_siblings);
|
||
|
||
g_free (priv->current_path);
|
||
|
||
G_OBJECT_CLASS (gtk_cell_area_parent_class)->finalize (object);
|
||
}
|
||
|
||
|
||
static void
|
||
gtk_cell_area_dispose (GObject *object)
|
||
{
|
||
/* This removes every cell renderer that may be added to the GtkCellArea,
|
||
* subclasses should be breaking references to the GtkCellRenderers
|
||
* at this point.
|
||
*/
|
||
gtk_cell_layout_clear (GTK_CELL_LAYOUT (object));
|
||
|
||
/* Remove any ref to a focused/edited cell */
|
||
gtk_cell_area_set_focus_cell (GTK_CELL_AREA (object), NULL);
|
||
gtk_cell_area_set_edited_cell (GTK_CELL_AREA (object), NULL);
|
||
gtk_cell_area_set_edit_widget (GTK_CELL_AREA (object), NULL);
|
||
|
||
G_OBJECT_CLASS (gtk_cell_area_parent_class)->dispose (object);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_FOCUS_CELL:
|
||
gtk_cell_area_set_focus_cell (area, (GtkCellRenderer *)g_value_get_object (value));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (object);
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_FOCUS_CELL:
|
||
g_value_set_object (value, priv->focus_cell);
|
||
break;
|
||
case PROP_EDITED_CELL:
|
||
g_value_set_object (value, priv->edited_cell);
|
||
break;
|
||
case PROP_EDIT_WIDGET:
|
||
g_value_set_object (value, priv->edit_widget);
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/*************************************************************
|
||
* GtkCellAreaClass *
|
||
*************************************************************/
|
||
static void
|
||
gtk_cell_area_real_add (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
g_warning ("GtkCellAreaClass::add not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_remove (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
g_warning ("GtkCellAreaClass::remove not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_foreach (GtkCellArea *area,
|
||
GtkCellCallback callback,
|
||
gpointer callback_data)
|
||
{
|
||
g_warning ("GtkCellAreaClass::foreach not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_foreach_alloc (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
const GdkRectangle *background_area,
|
||
GtkCellAllocCallback callback,
|
||
gpointer callback_data)
|
||
{
|
||
g_warning ("GtkCellAreaClass::foreach_alloc not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static gint
|
||
gtk_cell_area_real_event (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GdkEvent *event,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
gboolean retval = FALSE;
|
||
GdkEventType event_type = gdk_event_get_event_type (event);
|
||
|
||
if (event_type == GDK_KEY_PRESS && (flags & GTK_CELL_RENDERER_FOCUSED) != 0)
|
||
{
|
||
/* Cancel any edits in progress */
|
||
if (priv->edited_cell &&
|
||
gdk_key_event_get_keyval (event) == GDK_KEY_Escape)
|
||
{
|
||
gtk_cell_area_stop_editing (area, TRUE);
|
||
retval = TRUE;
|
||
}
|
||
}
|
||
else if (event_type == GDK_BUTTON_PRESS)
|
||
{
|
||
guint button;
|
||
|
||
button = gdk_button_event_get_button (event);
|
||
if (button == GDK_BUTTON_PRIMARY)
|
||
{
|
||
GtkCellRenderer *renderer = NULL;
|
||
GtkCellRenderer *focus_renderer;
|
||
GdkRectangle alloc_area;
|
||
double event_x, event_y;
|
||
int x, y;
|
||
GtkNative *native;
|
||
|
||
/* We may need some semantics to tell us the offset of the event
|
||
* window we are handling events for (i.e. GtkTreeView has a bin_window) */
|
||
gdk_event_get_position (event, &event_x, &event_y);
|
||
|
||
native = gtk_widget_get_native (widget);
|
||
gtk_widget_translate_coordinates (GTK_WIDGET (native), widget, event_x, event_y, &x, &y);
|
||
event_x = x;
|
||
event_y = y;
|
||
|
||
/* Dont try to search for an event coordinate that is not in the area, that will
|
||
* trigger a runtime warning.
|
||
*/
|
||
if (event_x >= cell_area->x && event_x <= cell_area->x + cell_area->width &&
|
||
event_y >= cell_area->y && event_y <= cell_area->y + cell_area->height)
|
||
renderer =
|
||
gtk_cell_area_get_cell_at_position (area, context, widget,
|
||
cell_area, event_x, event_y,
|
||
&alloc_area);
|
||
|
||
if (renderer)
|
||
{
|
||
focus_renderer = gtk_cell_area_get_focus_from_sibling (area, renderer);
|
||
if (!focus_renderer)
|
||
focus_renderer = renderer;
|
||
|
||
/* If we're already editing, cancel it and set focus */
|
||
if (gtk_cell_area_get_edited_cell (area))
|
||
{
|
||
/* XXX Was it really canceled in this case ? */
|
||
gtk_cell_area_stop_editing (area, TRUE);
|
||
gtk_cell_area_set_focus_cell (area, focus_renderer);
|
||
retval = TRUE;
|
||
}
|
||
else
|
||
{
|
||
/* If we are activating via a focus sibling,
|
||
* we need to fetch the right cell area for the real event renderer */
|
||
if (focus_renderer != renderer)
|
||
gtk_cell_area_get_cell_allocation (area, context, widget, focus_renderer,
|
||
cell_area, &alloc_area);
|
||
|
||
gtk_cell_area_set_focus_cell (area, focus_renderer);
|
||
retval = gtk_cell_area_activate_cell (area, widget, focus_renderer,
|
||
event, &alloc_area, flags);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return retval;
|
||
}
|
||
|
||
static gboolean
|
||
snapshot_cell (GtkCellRenderer *renderer,
|
||
const GdkRectangle *cell_area,
|
||
const GdkRectangle *cell_background,
|
||
CellRenderData *data)
|
||
{
|
||
GtkCellRenderer *focus_cell;
|
||
GtkCellRendererState flags;
|
||
GdkRectangle inner_area;
|
||
|
||
focus_cell = gtk_cell_area_get_focus_cell (data->area);
|
||
flags = data->render_flags;
|
||
|
||
gtk_cell_area_inner_cell_area (data->area, data->widget, cell_area, &inner_area);
|
||
|
||
if ((flags & GTK_CELL_RENDERER_FOCUSED) &&
|
||
(data->focus_all ||
|
||
(focus_cell &&
|
||
(renderer == focus_cell ||
|
||
gtk_cell_area_is_focus_sibling (data->area, focus_cell, renderer)))))
|
||
{
|
||
GdkRectangle cell_focus;
|
||
|
||
gtk_cell_renderer_get_aligned_area (renderer, data->widget, flags, &inner_area, &cell_focus);
|
||
|
||
if (data->first_focus)
|
||
{
|
||
data->first_focus = FALSE;
|
||
data->focus_rect = cell_focus;
|
||
}
|
||
else
|
||
{
|
||
gdk_rectangle_union (&data->focus_rect, &cell_focus, &data->focus_rect);
|
||
}
|
||
}
|
||
|
||
gtk_cell_renderer_snapshot (renderer, data->snapshot, data->widget,
|
||
cell_background, &inner_area, flags);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_snapshot (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GtkSnapshot *snapshot,
|
||
const GdkRectangle *background_area,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean paint_focus)
|
||
{
|
||
CellRenderData render_data =
|
||
{
|
||
area,
|
||
widget,
|
||
snapshot,
|
||
{ 0, },
|
||
flags,
|
||
paint_focus,
|
||
FALSE, TRUE
|
||
};
|
||
|
||
/* Make sure we dont paint a focus rectangle while there
|
||
* is an editable widget in play
|
||
*/
|
||
if (gtk_cell_area_get_edited_cell (area))
|
||
render_data.paint_focus = FALSE;
|
||
|
||
if (!gtk_widget_has_visible_focus (widget))
|
||
render_data.paint_focus = FALSE;
|
||
|
||
/* If no cell can activate but the caller wants focus painted,
|
||
* then we paint focus around all cells */
|
||
if ((flags & GTK_CELL_RENDERER_FOCUSED) != 0 && paint_focus &&
|
||
!gtk_cell_area_is_activatable (area))
|
||
render_data.focus_all = TRUE;
|
||
|
||
gtk_cell_area_foreach_alloc (area, context, widget, cell_area, background_area,
|
||
(GtkCellAllocCallback) snapshot_cell, &render_data);
|
||
|
||
if (render_data.paint_focus &&
|
||
render_data.focus_rect.width != 0 &&
|
||
render_data.focus_rect.height != 0)
|
||
{
|
||
GtkStyleContext *style_context;
|
||
GtkStateFlags renderer_state = 0;
|
||
|
||
style_context = gtk_widget_get_style_context (widget);
|
||
gtk_style_context_save (style_context);
|
||
|
||
renderer_state = gtk_cell_renderer_get_state (NULL, widget, flags);
|
||
gtk_style_context_set_state (style_context, renderer_state);
|
||
|
||
gtk_snapshot_render_focus (snapshot, style_context,
|
||
render_data.focus_rect.x, render_data.focus_rect.y,
|
||
render_data.focus_rect.width, render_data.focus_rect.height);
|
||
|
||
gtk_style_context_restore (style_context);
|
||
}
|
||
}
|
||
|
||
static void
|
||
apply_cell_attributes (GtkCellRenderer *renderer,
|
||
CellInfo *info,
|
||
AttributeData *data)
|
||
{
|
||
CellAttribute *attribute;
|
||
GSList *list;
|
||
GValue value = G_VALUE_INIT;
|
||
gboolean is_expander;
|
||
gboolean is_expanded;
|
||
|
||
g_object_freeze_notify (G_OBJECT (renderer));
|
||
|
||
/* Whether a row expands or is presently expanded can only be
|
||
* provided by the view (as these states can vary across views
|
||
* accessing the same model).
|
||
*/
|
||
is_expander = gtk_cell_renderer_get_is_expander (renderer);
|
||
if (is_expander != data->is_expander)
|
||
gtk_cell_renderer_set_is_expander (renderer, data->is_expander);
|
||
|
||
is_expanded = gtk_cell_renderer_get_is_expanded (renderer);
|
||
if (is_expanded != data->is_expanded)
|
||
gtk_cell_renderer_set_is_expanded (renderer, data->is_expanded);
|
||
|
||
/* Apply the attributes directly to the renderer */
|
||
for (list = info->attributes; list; list = list->next)
|
||
{
|
||
attribute = list->data;
|
||
|
||
gtk_tree_model_get_value (data->model, data->iter, attribute->column, &value);
|
||
g_object_set_property (G_OBJECT (renderer), attribute->attribute, &value);
|
||
g_value_unset (&value);
|
||
}
|
||
|
||
/* Call any GtkCellLayoutDataFunc that may have been set by the user
|
||
*/
|
||
if (info->func)
|
||
info->func (info->proxy ? info->proxy : GTK_CELL_LAYOUT (data->area), renderer,
|
||
data->model, data->iter, info->data);
|
||
|
||
g_object_thaw_notify (G_OBJECT (renderer));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_apply_attributes (GtkCellArea *area,
|
||
GtkTreeModel *tree_model,
|
||
GtkTreeIter *iter,
|
||
gboolean is_expander,
|
||
gboolean is_expanded)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
AttributeData data;
|
||
GtkTreePath *path;
|
||
|
||
/* Feed in data needed to apply to every renderer */
|
||
data.area = area;
|
||
data.model = tree_model;
|
||
data.iter = iter;
|
||
data.is_expander = is_expander;
|
||
data.is_expanded = is_expanded;
|
||
|
||
/* Go over any cells that have attributes or custom GtkCellLayoutDataFuncs and
|
||
* apply the data from the treemodel */
|
||
g_hash_table_foreach (priv->cell_info, (GHFunc)apply_cell_attributes, &data);
|
||
|
||
/* Update the currently applied path */
|
||
g_free (priv->current_path);
|
||
path = gtk_tree_model_get_path (tree_model, iter);
|
||
priv->current_path = gtk_tree_path_to_string (path);
|
||
gtk_tree_path_free (path);
|
||
}
|
||
|
||
static GtkCellAreaContext *
|
||
gtk_cell_area_real_create_context (GtkCellArea *area)
|
||
{
|
||
g_warning ("GtkCellAreaClass::create_context not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static GtkCellAreaContext *
|
||
gtk_cell_area_real_copy_context (GtkCellArea *area,
|
||
GtkCellAreaContext *context)
|
||
{
|
||
g_warning ("GtkCellAreaClass::copy_context not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static GtkSizeRequestMode
|
||
gtk_cell_area_real_get_request_mode (GtkCellArea *area)
|
||
{
|
||
/* By default cell areas are height-for-width. */
|
||
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_get_preferred_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_width,
|
||
gint *natural_width)
|
||
{
|
||
g_warning ("GtkCellAreaClass::get_preferred_width not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_get_preferred_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_height,
|
||
gint *natural_height)
|
||
{
|
||
g_warning ("GtkCellAreaClass::get_preferred_height not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_get_preferred_height_for_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint width,
|
||
gint *minimum_height,
|
||
gint *natural_height)
|
||
{
|
||
/* If the area doesnt do height-for-width, fallback on base preferred height */
|
||
GTK_CELL_AREA_GET_CLASS (area)->get_preferred_height (area, context, widget, minimum_height, natural_height);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_real_get_preferred_width_for_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint height,
|
||
gint *minimum_width,
|
||
gint *natural_width)
|
||
{
|
||
/* If the area doesnt do width-for-height, fallback on base preferred width */
|
||
GTK_CELL_AREA_GET_CLASS (area)->get_preferred_width (area, context, widget, minimum_width, natural_width);
|
||
}
|
||
|
||
static gboolean
|
||
get_is_activatable (GtkCellRenderer *renderer,
|
||
gboolean *activatable)
|
||
{
|
||
|
||
if (gtk_cell_renderer_is_activatable (renderer))
|
||
*activatable = TRUE;
|
||
|
||
return *activatable;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_cell_area_real_is_activatable (GtkCellArea *area)
|
||
{
|
||
gboolean activatable = FALSE;
|
||
|
||
/* Checks if any renderer can focus for the currently applied
|
||
* attributes.
|
||
*
|
||
* Subclasses can override this in the case that they are also
|
||
* rendering widgets as well as renderers.
|
||
*/
|
||
gtk_cell_area_foreach (area, (GtkCellCallback)get_is_activatable, &activatable);
|
||
|
||
return activatable;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_cell_area_real_activate (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean edit_only)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GdkRectangle renderer_area;
|
||
GtkCellRenderer *activate_cell = NULL;
|
||
GtkCellRendererMode mode;
|
||
|
||
if (priv->focus_cell)
|
||
{
|
||
g_object_get (priv->focus_cell, "mode", &mode, NULL);
|
||
|
||
if (gtk_cell_renderer_get_visible (priv->focus_cell) &&
|
||
(edit_only ? mode == GTK_CELL_RENDERER_MODE_EDITABLE :
|
||
mode != GTK_CELL_RENDERER_MODE_INERT))
|
||
activate_cell = priv->focus_cell;
|
||
}
|
||
else
|
||
{
|
||
GList *cells, *l;
|
||
|
||
/* GtkTreeView sometimes wants to activate a cell when no
|
||
* cells are in focus.
|
||
*/
|
||
cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
|
||
for (l = cells; l && !activate_cell; l = l->next)
|
||
{
|
||
GtkCellRenderer *renderer = l->data;
|
||
|
||
g_object_get (renderer, "mode", &mode, NULL);
|
||
|
||
if (gtk_cell_renderer_get_visible (renderer) &&
|
||
(edit_only ? mode == GTK_CELL_RENDERER_MODE_EDITABLE :
|
||
mode != GTK_CELL_RENDERER_MODE_INERT))
|
||
activate_cell = renderer;
|
||
}
|
||
g_list_free (cells);
|
||
}
|
||
|
||
if (activate_cell)
|
||
{
|
||
/* Get the allocation of the focused cell.
|
||
*/
|
||
gtk_cell_area_get_cell_allocation (area, context, widget, activate_cell,
|
||
cell_area, &renderer_area);
|
||
|
||
/* Activate or Edit the cell
|
||
*
|
||
* Currently just not sending an event, renderers afaics dont use
|
||
* the event argument anyway, worst case is we can synthesize one.
|
||
*/
|
||
if (gtk_cell_area_activate_cell (area, widget, activate_cell, NULL,
|
||
&renderer_area, flags))
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_cell_area_real_focus (GtkCellArea *area,
|
||
GtkDirectionType direction)
|
||
{
|
||
g_warning ("GtkCellAreaClass::focus not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
return FALSE;
|
||
}
|
||
|
||
/*************************************************************
|
||
* GtkCellLayoutIface *
|
||
*************************************************************/
|
||
static void
|
||
gtk_cell_area_cell_layout_init (GtkCellLayoutIface *iface)
|
||
{
|
||
iface->pack_start = gtk_cell_area_pack_default;
|
||
iface->pack_end = gtk_cell_area_pack_default;
|
||
iface->clear = gtk_cell_area_clear;
|
||
iface->add_attribute = gtk_cell_area_add_attribute;
|
||
iface->set_cell_data_func = gtk_cell_area_set_cell_data_func;
|
||
iface->clear_attributes = gtk_cell_area_clear_attributes;
|
||
iface->reorder = gtk_cell_area_reorder;
|
||
iface->get_cells = gtk_cell_area_get_cells;
|
||
iface->get_area = gtk_cell_area_get_area;
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_pack_default (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer,
|
||
gboolean expand)
|
||
{
|
||
gtk_cell_area_add (GTK_CELL_AREA (cell_layout), renderer);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_clear (GtkCellLayout *cell_layout)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (cell_layout);
|
||
GList *l, *cells =
|
||
gtk_cell_layout_get_cells (cell_layout);
|
||
|
||
for (l = cells; l; l = l->next)
|
||
{
|
||
GtkCellRenderer *renderer = l->data;
|
||
gtk_cell_area_remove (area, renderer);
|
||
}
|
||
|
||
g_list_free (cells);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_add_attribute (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *attribute,
|
||
gint column)
|
||
{
|
||
gtk_cell_area_attribute_connect (GTK_CELL_AREA (cell_layout),
|
||
renderer, attribute, column);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_set_cell_data_func (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellLayoutDataFunc func,
|
||
gpointer func_data,
|
||
GDestroyNotify destroy)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (cell_layout);
|
||
|
||
_gtk_cell_area_set_cell_data_func_with_proxy (area, renderer, (GFunc)func, func_data, destroy, NULL);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_clear_attributes (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellArea *area = GTK_CELL_AREA (cell_layout);
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
CellInfo *info;
|
||
|
||
info = g_hash_table_lookup (priv->cell_info, renderer);
|
||
|
||
if (info)
|
||
{
|
||
g_slist_free_full (info->attributes, (GDestroyNotify)cell_attribute_free);
|
||
info->attributes = NULL;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_reorder (GtkCellLayout *cell_layout,
|
||
GtkCellRenderer *cell,
|
||
gint position)
|
||
{
|
||
g_warning ("GtkCellLayout::reorder not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (cell_layout)));
|
||
}
|
||
|
||
static gboolean
|
||
accum_cells (GtkCellRenderer *renderer,
|
||
GList **accum)
|
||
{
|
||
*accum = g_list_prepend (*accum, renderer);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static GList *
|
||
gtk_cell_area_get_cells (GtkCellLayout *cell_layout)
|
||
{
|
||
GList *cells = NULL;
|
||
|
||
gtk_cell_area_foreach (GTK_CELL_AREA (cell_layout),
|
||
(GtkCellCallback)accum_cells,
|
||
&cells);
|
||
|
||
return g_list_reverse (cells);
|
||
}
|
||
|
||
static GtkCellArea *
|
||
gtk_cell_area_get_area (GtkCellLayout *cell_layout)
|
||
{
|
||
return GTK_CELL_AREA (cell_layout);
|
||
}
|
||
|
||
/*************************************************************
|
||
* GtkBuildableIface *
|
||
*************************************************************/
|
||
static void
|
||
gtk_cell_area_buildable_init (GtkBuildableIface *iface)
|
||
{
|
||
iface->add_child = _gtk_cell_layout_buildable_add_child;
|
||
iface->custom_tag_start = _gtk_cell_layout_buildable_custom_tag_start;
|
||
iface->custom_tag_end = gtk_cell_area_buildable_custom_tag_end;
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_buildable_custom_tag_end (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer data)
|
||
{
|
||
/* Just ignore the boolean return from here */
|
||
_gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname, data);
|
||
}
|
||
|
||
/*************************************************************
|
||
* API *
|
||
*************************************************************/
|
||
|
||
/**
|
||
* gtk_cell_area_add:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to add to @area
|
||
*
|
||
* Adds @renderer to @area with the default child cell properties.
|
||
*/
|
||
void
|
||
gtk_cell_area_add (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->add (area, renderer);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_remove:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to remove from @area
|
||
*
|
||
* Removes @renderer from @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_remove (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GList *renderers, *l;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
/* Remove any custom attributes and custom cell data func here first */
|
||
g_hash_table_remove (priv->cell_info, renderer);
|
||
|
||
/* Remove focus siblings of this renderer */
|
||
g_hash_table_remove (priv->focus_siblings, renderer);
|
||
|
||
/* Remove this renderer from any focus renderer's sibling list */
|
||
renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
|
||
|
||
for (l = renderers; l; l = l->next)
|
||
{
|
||
GtkCellRenderer *focus_renderer = l->data;
|
||
|
||
if (gtk_cell_area_is_focus_sibling (area, focus_renderer, renderer))
|
||
{
|
||
gtk_cell_area_remove_focus_sibling (area, focus_renderer, renderer);
|
||
break;
|
||
}
|
||
}
|
||
|
||
g_list_free (renderers);
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->remove (area, renderer);
|
||
}
|
||
|
||
static gboolean
|
||
get_has_renderer (GtkCellRenderer *renderer,
|
||
HasRendererCheck *check)
|
||
{
|
||
if (renderer == check->renderer)
|
||
check->has_renderer = TRUE;
|
||
|
||
return check->has_renderer;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_has_renderer:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to check
|
||
*
|
||
* Checks if @area contains @renderer.
|
||
*
|
||
* Returns: %TRUE if @renderer is in the @area.
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_has_renderer (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
HasRendererCheck check = { renderer, FALSE };
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
|
||
|
||
gtk_cell_area_foreach (area, (GtkCellCallback)get_has_renderer, &check);
|
||
|
||
return check.has_renderer;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_foreach:
|
||
* @area: a #GtkCellArea
|
||
* @callback: (scope call): the #GtkCellCallback to call
|
||
* @callback_data: user provided data pointer
|
||
*
|
||
* Calls @callback for every #GtkCellRenderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_foreach (GtkCellArea *area,
|
||
GtkCellCallback callback,
|
||
gpointer callback_data)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->foreach (area, callback, callback_data);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_foreach_alloc:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext for this row of data.
|
||
* @widget: the #GtkWidget that @area is rendering to
|
||
* @cell_area: the @widget relative coordinates and size for @area
|
||
* @background_area: the @widget relative coordinates of the background area
|
||
* @callback: (scope call): the #GtkCellAllocCallback to call
|
||
* @callback_data: user provided data pointer
|
||
*
|
||
* Calls @callback for every #GtkCellRenderer in @area with the
|
||
* allocated rectangle inside @cell_area.
|
||
*/
|
||
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)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (cell_area != NULL);
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->foreach_alloc (area, context, widget,
|
||
cell_area, background_area,
|
||
callback, callback_data);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_event:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext for this row of data.
|
||
* @widget: the #GtkWidget that @area is rendering to
|
||
* @event: the #GdkEvent to handle
|
||
* @cell_area: the @widget relative coordinates for @area
|
||
* @flags: the #GtkCellRendererState for @area in this row.
|
||
*
|
||
* Delegates event handling to a #GtkCellArea.
|
||
*
|
||
* Returns: %TRUE if the event was handled by @area.
|
||
*/
|
||
gint
|
||
gtk_cell_area_event (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GdkEvent *event,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags)
|
||
{
|
||
GtkCellAreaClass *class;
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), 0);
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA_CONTEXT (context), 0);
|
||
g_return_val_if_fail (GTK_IS_WIDGET (widget), 0);
|
||
g_return_val_if_fail (event != NULL, 0);
|
||
g_return_val_if_fail (cell_area != NULL, 0);
|
||
|
||
class = GTK_CELL_AREA_GET_CLASS (area);
|
||
|
||
if (class->event)
|
||
return class->event (area, context, widget, event, cell_area, flags);
|
||
|
||
g_warning ("GtkCellAreaClass::event not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_snapshot:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext for this row of data.
|
||
* @widget: the #GtkWidget that @area is rendering to
|
||
* @snapshot: the #GtkSnapshot to draw to
|
||
* @background_area: the @widget relative coordinates for @area’s background
|
||
* @cell_area: the @widget relative coordinates for @area
|
||
* @flags: the #GtkCellRendererState for @area in this row.
|
||
* @paint_focus: whether @area should paint focus on focused cells for focused rows or not.
|
||
*
|
||
* Snapshots @area’s cells according to @area’s layout onto at
|
||
* the given coordinates.
|
||
*/
|
||
void
|
||
gtk_cell_area_snapshot (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GtkSnapshot *snapshot,
|
||
const GdkRectangle *background_area,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean paint_focus)
|
||
{
|
||
GtkCellAreaClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (snapshot != NULL);
|
||
g_return_if_fail (background_area != NULL);
|
||
g_return_if_fail (cell_area != NULL);
|
||
|
||
class = GTK_CELL_AREA_GET_CLASS (area);
|
||
|
||
if (class->snapshot)
|
||
class->snapshot (area, context, widget, snapshot, background_area, cell_area, flags, paint_focus);
|
||
else
|
||
g_warning ("GtkCellAreaClass::snapshot not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
static gboolean
|
||
get_cell_allocation (GtkCellRenderer *renderer,
|
||
const GdkRectangle *cell_area,
|
||
const GdkRectangle *cell_background,
|
||
RendererAllocationData *data)
|
||
{
|
||
if (data->renderer == renderer)
|
||
data->allocation = *cell_area;
|
||
|
||
return (data->renderer == renderer);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_cell_allocation:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext used to hold sizes for @area.
|
||
* @widget: the #GtkWidget that @area is rendering on
|
||
* @renderer: the #GtkCellRenderer to get the allocation for
|
||
* @cell_area: the whole allocated area for @area in @widget
|
||
* for this row
|
||
* @allocation: (out): where to store the allocation for @renderer
|
||
*
|
||
* Derives the allocation of @renderer inside @area if @area
|
||
* were to be renderered in @cell_area.
|
||
*/
|
||
void
|
||
gtk_cell_area_get_cell_allocation (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
GtkCellRenderer *renderer,
|
||
const GdkRectangle *cell_area,
|
||
GdkRectangle *allocation)
|
||
{
|
||
RendererAllocationData data = { renderer, { 0, } };
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_AREA_CONTEXT (context));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (cell_area != NULL);
|
||
g_return_if_fail (allocation != NULL);
|
||
|
||
gtk_cell_area_foreach_alloc (area, context, widget, cell_area, cell_area,
|
||
(GtkCellAllocCallback)get_cell_allocation, &data);
|
||
|
||
*allocation = data.allocation;
|
||
}
|
||
|
||
static gboolean
|
||
get_cell_by_position (GtkCellRenderer *renderer,
|
||
const GdkRectangle *cell_area,
|
||
const GdkRectangle *cell_background,
|
||
CellByPositionData *data)
|
||
{
|
||
if (data->x >= cell_area->x && data->x < cell_area->x + cell_area->width &&
|
||
data->y >= cell_area->y && data->y < cell_area->y + cell_area->height)
|
||
{
|
||
data->renderer = renderer;
|
||
data->cell_area = *cell_area;
|
||
}
|
||
|
||
return (data->renderer != NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_cell_at_position:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext used to hold sizes for @area.
|
||
* @widget: the #GtkWidget that @area is rendering on
|
||
* @cell_area: the whole allocated area for @area in @widget
|
||
* for this row
|
||
* @x: the x position
|
||
* @y: the y position
|
||
* @alloc_area: (out) (allow-none): where to store the inner allocated area of the
|
||
* returned cell renderer, or %NULL.
|
||
*
|
||
* Gets the #GtkCellRenderer at @x and @y coordinates inside @area and optionally
|
||
* returns the full cell allocation for it inside @cell_area.
|
||
*
|
||
* Returns: (transfer none): the #GtkCellRenderer at @x and @y.
|
||
*/
|
||
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)
|
||
{
|
||
CellByPositionData data = { x, y, NULL, { 0, } };
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA_CONTEXT (context), NULL);
|
||
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
||
g_return_val_if_fail (cell_area != NULL, NULL);
|
||
g_return_val_if_fail (x >= cell_area->x && x <= cell_area->x + cell_area->width, NULL);
|
||
g_return_val_if_fail (y >= cell_area->y && y <= cell_area->y + cell_area->height, NULL);
|
||
|
||
gtk_cell_area_foreach_alloc (area, context, widget, cell_area, cell_area,
|
||
(GtkCellAllocCallback)get_cell_by_position, &data);
|
||
|
||
if (alloc_area)
|
||
*alloc_area = data.cell_area;
|
||
|
||
return data.renderer;
|
||
}
|
||
|
||
/*************************************************************
|
||
* API: Geometry *
|
||
*************************************************************/
|
||
/**
|
||
* gtk_cell_area_create_context:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Creates a #GtkCellAreaContext to be used with @area for
|
||
* all purposes. #GtkCellAreaContext stores geometry information
|
||
* for rows for which it was operated on, it is important to use
|
||
* the same context for the same row of data at all times (i.e.
|
||
* one should render and handle events with the same #GtkCellAreaContext
|
||
* which was used to request the size of those rows of data).
|
||
*
|
||
* Returns: (transfer full): a newly created #GtkCellAreaContext which can be used with @area.
|
||
*/
|
||
GtkCellAreaContext *
|
||
gtk_cell_area_create_context (GtkCellArea *area)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->create_context (area);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_copy_context:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext to copy
|
||
*
|
||
* This is sometimes needed for cases where rows need to share
|
||
* alignments in one orientation but may be separately grouped
|
||
* in the opposing orientation.
|
||
*
|
||
* For instance, #GtkIconView creates all icons (rows) to have
|
||
* the same width and the cells theirin to have the same
|
||
* horizontal alignments. However each row of icons may have
|
||
* a separate collective height. #GtkIconView uses this to
|
||
* request the heights of each row based on a context which
|
||
* was already used to request all the row widths that are
|
||
* to be displayed.
|
||
*
|
||
* Returns: (transfer full): a newly created #GtkCellAreaContext copy of @context.
|
||
*/
|
||
GtkCellAreaContext *
|
||
gtk_cell_area_copy_context (GtkCellArea *area,
|
||
GtkCellAreaContext *context)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA_CONTEXT (context), NULL);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->copy_context (area, context);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_request_mode:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Gets whether the area prefers a height-for-width layout
|
||
* or a width-for-height layout.
|
||
*
|
||
* Returns: The #GtkSizeRequestMode preferred by @area.
|
||
*/
|
||
GtkSizeRequestMode
|
||
gtk_cell_area_get_request_mode (GtkCellArea *area)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area),
|
||
GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->get_request_mode (area);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_preferred_width:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext to perform this request with
|
||
* @widget: the #GtkWidget where @area will be rendering
|
||
* @minimum_width: (out) (allow-none): location to store the minimum width, or %NULL
|
||
* @natural_width: (out) (allow-none): location to store the natural width, or %NULL
|
||
*
|
||
* Retrieves a cell area’s initial minimum and natural width.
|
||
*
|
||
* @area will store some geometrical information in @context along the way;
|
||
* when requesting sizes over an arbitrary number of rows, it’s not important
|
||
* to check the @minimum_width and @natural_width of this call but rather to
|
||
* consult gtk_cell_area_context_get_preferred_width() after a series of
|
||
* requests.
|
||
*/
|
||
void
|
||
gtk_cell_area_get_preferred_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_width,
|
||
gint *natural_width)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->get_preferred_width (area, context, widget,
|
||
minimum_width, natural_width);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_preferred_height_for_width:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext which has already been requested for widths.
|
||
* @widget: the #GtkWidget where @area will be rendering
|
||
* @width: the width for which to check the height of this area
|
||
* @minimum_height: (out) (allow-none): location to store the minimum height, or %NULL
|
||
* @natural_height: (out) (allow-none): location to store the natural height, or %NULL
|
||
*
|
||
* Retrieves a cell area’s minimum and natural height if it would be given
|
||
* the specified @width.
|
||
*
|
||
* @area stores some geometrical information in @context along the way
|
||
* while calling gtk_cell_area_get_preferred_width(). It’s important to
|
||
* perform a series of gtk_cell_area_get_preferred_width() requests with
|
||
* @context first and then call gtk_cell_area_get_preferred_height_for_width()
|
||
* on each cell area individually to get the height for width of each
|
||
* fully requested row.
|
||
*
|
||
* If at some point, the width of a single row changes, it should be
|
||
* requested with gtk_cell_area_get_preferred_width() again and then
|
||
* the full width of the requested rows checked again with
|
||
* gtk_cell_area_context_get_preferred_width().
|
||
*/
|
||
void
|
||
gtk_cell_area_get_preferred_height_for_width (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint width,
|
||
gint *minimum_height,
|
||
gint *natural_height)
|
||
{
|
||
GtkCellAreaClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
class = GTK_CELL_AREA_GET_CLASS (area);
|
||
class->get_preferred_height_for_width (area, context, widget, width, minimum_height, natural_height);
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_cell_area_get_preferred_height:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext to perform this request with
|
||
* @widget: the #GtkWidget where @area will be rendering
|
||
* @minimum_height: (out) (allow-none): location to store the minimum height, or %NULL
|
||
* @natural_height: (out) (allow-none): location to store the natural height, or %NULL
|
||
*
|
||
* Retrieves a cell area’s initial minimum and natural height.
|
||
*
|
||
* @area will store some geometrical information in @context along the way;
|
||
* when requesting sizes over an arbitrary number of rows, it’s not important
|
||
* to check the @minimum_height and @natural_height of this call but rather to
|
||
* consult gtk_cell_area_context_get_preferred_height() after a series of
|
||
* requests.
|
||
*/
|
||
void
|
||
gtk_cell_area_get_preferred_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint *minimum_height,
|
||
gint *natural_height)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
GTK_CELL_AREA_GET_CLASS (area)->get_preferred_height (area, context, widget,
|
||
minimum_height, natural_height);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_preferred_width_for_height:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext which has already been requested for widths.
|
||
* @widget: the #GtkWidget where @area will be rendering
|
||
* @height: the height for which to check the width of this area
|
||
* @minimum_width: (out) (allow-none): location to store the minimum width, or %NULL
|
||
* @natural_width: (out) (allow-none): location to store the natural width, or %NULL
|
||
*
|
||
* Retrieves a cell area’s minimum and natural width if it would be given
|
||
* the specified @height.
|
||
*
|
||
* @area stores some geometrical information in @context along the way
|
||
* while calling gtk_cell_area_get_preferred_height(). It’s important to
|
||
* perform a series of gtk_cell_area_get_preferred_height() requests with
|
||
* @context first and then call gtk_cell_area_get_preferred_width_for_height()
|
||
* on each cell area individually to get the height for width of each
|
||
* fully requested row.
|
||
*
|
||
* If at some point, the height of a single row changes, it should be
|
||
* requested with gtk_cell_area_get_preferred_height() again and then
|
||
* the full height of the requested rows checked again with
|
||
* gtk_cell_area_context_get_preferred_height().
|
||
*/
|
||
void
|
||
gtk_cell_area_get_preferred_width_for_height (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
gint height,
|
||
gint *minimum_width,
|
||
gint *natural_width)
|
||
{
|
||
GtkCellAreaClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
class = GTK_CELL_AREA_GET_CLASS (area);
|
||
class->get_preferred_width_for_height (area, context, widget, height, minimum_width, natural_width);
|
||
}
|
||
|
||
/*************************************************************
|
||
* API: Attributes *
|
||
*************************************************************/
|
||
|
||
/**
|
||
* gtk_cell_area_attribute_connect:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to connect an attribute for
|
||
* @attribute: the attribute name
|
||
* @column: the #GtkTreeModel column to fetch attribute values from
|
||
*
|
||
* Connects an @attribute to apply values from @column for the
|
||
* #GtkTreeModel in use.
|
||
*/
|
||
void
|
||
gtk_cell_area_attribute_connect (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *attribute,
|
||
gint column)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
CellInfo *info;
|
||
CellAttribute *cell_attribute;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (attribute != NULL);
|
||
g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
|
||
|
||
info = g_hash_table_lookup (priv->cell_info, renderer);
|
||
|
||
if (!info)
|
||
{
|
||
info = cell_info_new (NULL, NULL, NULL);
|
||
|
||
g_hash_table_insert (priv->cell_info, renderer, info);
|
||
}
|
||
else
|
||
{
|
||
GSList *node;
|
||
|
||
/* Check we are not adding the same attribute twice */
|
||
if ((node = g_slist_find_custom (info->attributes, attribute,
|
||
(GCompareFunc)cell_attribute_find)) != NULL)
|
||
{
|
||
cell_attribute = node->data;
|
||
|
||
g_warning ("Cannot connect attribute '%s' for cell renderer class '%s' "
|
||
"since '%s' is already attributed to column %d",
|
||
attribute,
|
||
G_OBJECT_TYPE_NAME (renderer),
|
||
attribute, cell_attribute->column);
|
||
return;
|
||
}
|
||
}
|
||
|
||
cell_attribute = cell_attribute_new (renderer, attribute, column);
|
||
|
||
if (!cell_attribute)
|
||
{
|
||
g_warning ("Cannot connect attribute '%s' for cell renderer class '%s' "
|
||
"since attribute does not exist",
|
||
attribute,
|
||
G_OBJECT_TYPE_NAME (renderer));
|
||
return;
|
||
}
|
||
|
||
info->attributes = g_slist_prepend (info->attributes, cell_attribute);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_attribute_disconnect:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to disconnect an attribute for
|
||
* @attribute: the attribute name
|
||
*
|
||
* Disconnects @attribute for the @renderer in @area so that
|
||
* attribute will no longer be updated with values from the
|
||
* model.
|
||
*/
|
||
void
|
||
gtk_cell_area_attribute_disconnect (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *attribute)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
CellInfo *info;
|
||
CellAttribute *cell_attribute;
|
||
GSList *node;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (attribute != NULL);
|
||
g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
|
||
|
||
info = g_hash_table_lookup (priv->cell_info, renderer);
|
||
|
||
if (info)
|
||
{
|
||
node = g_slist_find_custom (info->attributes, attribute,
|
||
(GCompareFunc)cell_attribute_find);
|
||
if (node)
|
||
{
|
||
cell_attribute = node->data;
|
||
|
||
cell_attribute_free (cell_attribute);
|
||
|
||
info->attributes = g_slist_delete_link (info->attributes, node);
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_attribute_get_column:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer
|
||
* @attribute: an attribute on the renderer
|
||
*
|
||
* Returns the model column that an attribute has been mapped to,
|
||
* or -1 if the attribute is not mapped.
|
||
*
|
||
* Returns: the model column, or -1
|
||
*/
|
||
gint
|
||
gtk_cell_area_attribute_get_column (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *attribute)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
CellInfo *info;
|
||
CellAttribute *cell_attribute;
|
||
GSList *node;
|
||
|
||
info = g_hash_table_lookup (priv->cell_info, renderer);
|
||
|
||
if (info)
|
||
{
|
||
node = g_slist_find_custom (info->attributes, attribute,
|
||
(GCompareFunc)cell_attribute_find);
|
||
if (node)
|
||
{
|
||
cell_attribute = node->data;
|
||
return cell_attribute->column;
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_apply_attributes:
|
||
* @area: a #GtkCellArea
|
||
* @tree_model: the #GtkTreeModel to pull values from
|
||
* @iter: the #GtkTreeIter in @tree_model to apply values for
|
||
* @is_expander: whether @iter has children
|
||
* @is_expanded: whether @iter is expanded in the view and
|
||
* children are visible
|
||
*
|
||
* Applies any connected attributes to the renderers in
|
||
* @area by pulling the values from @tree_model.
|
||
*/
|
||
void
|
||
gtk_cell_area_apply_attributes (GtkCellArea *area,
|
||
GtkTreeModel *tree_model,
|
||
GtkTreeIter *iter,
|
||
gboolean is_expander,
|
||
gboolean is_expanded)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_TREE_MODEL (tree_model));
|
||
g_return_if_fail (iter != NULL);
|
||
|
||
g_signal_emit (area, cell_area_signals[SIGNAL_APPLY_ATTRIBUTES], 0,
|
||
tree_model, iter, is_expander, is_expanded);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_current_path_string:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Gets the current #GtkTreePath string for the currently
|
||
* applied #GtkTreeIter, this is implicitly updated when
|
||
* gtk_cell_area_apply_attributes() is called and can be
|
||
* used to interact with renderers from #GtkCellArea
|
||
* subclasses.
|
||
*
|
||
* Returns: The current #GtkTreePath string for the current
|
||
* attributes applied to @area. This string belongs to the area and
|
||
* should not be freed.
|
||
*/
|
||
const gchar *
|
||
gtk_cell_area_get_current_path_string (GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
|
||
return priv->current_path;
|
||
}
|
||
|
||
|
||
/*************************************************************
|
||
* API: Cell Properties *
|
||
*************************************************************/
|
||
/**
|
||
* gtk_cell_area_class_install_cell_property:
|
||
* @aclass: a #GtkCellAreaClass
|
||
* @property_id: the id for the property
|
||
* @pspec: the #GParamSpec for the property
|
||
*
|
||
* Installs a cell property on a cell area class.
|
||
*/
|
||
void
|
||
gtk_cell_area_class_install_cell_property (GtkCellAreaClass *aclass,
|
||
guint property_id,
|
||
GParamSpec *pspec)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_AREA_CLASS (aclass));
|
||
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
|
||
if (pspec->flags & G_PARAM_WRITABLE)
|
||
g_return_if_fail (aclass->set_cell_property != NULL);
|
||
if (pspec->flags & G_PARAM_READABLE)
|
||
g_return_if_fail (aclass->get_cell_property != NULL);
|
||
g_return_if_fail (property_id > 0);
|
||
g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
|
||
g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
|
||
|
||
if (g_param_spec_pool_lookup (cell_property_pool, pspec->name, G_OBJECT_CLASS_TYPE (aclass), TRUE))
|
||
{
|
||
g_warning (G_STRLOC ": class '%s' already contains a cell property named '%s'",
|
||
G_OBJECT_CLASS_NAME (aclass), pspec->name);
|
||
return;
|
||
}
|
||
g_param_spec_ref (pspec);
|
||
g_param_spec_sink (pspec);
|
||
PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
|
||
g_param_spec_pool_insert (cell_property_pool, pspec, G_OBJECT_CLASS_TYPE (aclass));
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_class_find_cell_property:
|
||
* @aclass: a #GtkCellAreaClass
|
||
* @property_name: the name of the child property to find
|
||
*
|
||
* Finds a cell property of a cell area class by name.
|
||
*
|
||
* Returns: (transfer none): the #GParamSpec of the child property
|
||
* or %NULL if @aclass has no child property with that name.
|
||
*/
|
||
GParamSpec*
|
||
gtk_cell_area_class_find_cell_property (GtkCellAreaClass *aclass,
|
||
const gchar *property_name)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA_CLASS (aclass), NULL);
|
||
g_return_val_if_fail (property_name != NULL, NULL);
|
||
|
||
return g_param_spec_pool_lookup (cell_property_pool,
|
||
property_name,
|
||
G_OBJECT_CLASS_TYPE (aclass),
|
||
TRUE);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_class_list_cell_properties:
|
||
* @aclass: a #GtkCellAreaClass
|
||
* @n_properties: (out): location to return the number of cell properties found
|
||
*
|
||
* Returns all cell properties of a cell area class.
|
||
*
|
||
* Returns: (array length=n_properties) (transfer container): a newly
|
||
* allocated %NULL-terminated array of #GParamSpec*. The array
|
||
* must be freed with g_free().
|
||
*/
|
||
GParamSpec**
|
||
gtk_cell_area_class_list_cell_properties (GtkCellAreaClass *aclass,
|
||
guint *n_properties)
|
||
{
|
||
GParamSpec **pspecs;
|
||
guint n;
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA_CLASS (aclass), NULL);
|
||
|
||
pspecs = g_param_spec_pool_list (cell_property_pool,
|
||
G_OBJECT_CLASS_TYPE (aclass),
|
||
&n);
|
||
if (n_properties)
|
||
*n_properties = n;
|
||
|
||
return pspecs;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_add_with_properties:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer to be placed inside @area
|
||
* @first_prop_name: the name of the first cell property to set
|
||
* @...: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Adds @renderer to @area, setting cell properties at the same time.
|
||
* See gtk_cell_area_add() and gtk_cell_area_cell_set() for more details.
|
||
*/
|
||
void
|
||
gtk_cell_area_add_with_properties (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
GtkCellAreaClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
class = GTK_CELL_AREA_GET_CLASS (area);
|
||
|
||
if (class->add)
|
||
{
|
||
va_list var_args;
|
||
|
||
class->add (area, renderer);
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_cell_area_cell_set_valist (area, renderer, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
else
|
||
g_warning ("GtkCellAreaClass::add not implemented for '%s'",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (area)));
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_set:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer which is a cell inside @area
|
||
* @first_prop_name: the name of the first cell property to set
|
||
* @...: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Sets one or more cell properties for @cell in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_set (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
va_list var_args;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_cell_area_cell_set_valist (area, renderer, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_get:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer which is inside @area
|
||
* @first_prop_name: the name of the first cell property to get
|
||
* @...: return location for the first cell property, followed
|
||
* optionally by more name/return location pairs, followed by %NULL
|
||
*
|
||
* Gets the values of one or more cell properties for @renderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_get (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
va_list var_args;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_cell_area_cell_get_valist (area, renderer, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
|
||
static inline void
|
||
area_get_cell_property (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GParamSpec *pspec,
|
||
GValue *value)
|
||
{
|
||
GtkCellAreaClass *class = g_type_class_peek (pspec->owner_type);
|
||
|
||
class->get_cell_property (area, renderer, PARAM_SPEC_PARAM_ID (pspec), value, pspec);
|
||
}
|
||
|
||
static inline void
|
||
area_set_cell_property (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GParamSpec *pspec,
|
||
const GValue *value)
|
||
{
|
||
GValue tmp_value = G_VALUE_INIT;
|
||
GtkCellAreaClass *class = g_type_class_peek (pspec->owner_type);
|
||
|
||
/* provide a copy to work from, convert (if necessary) and validate */
|
||
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
if (!g_value_transform (value, &tmp_value))
|
||
g_warning ("unable to set cell property '%s' of type '%s' from value of type '%s'",
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
||
G_VALUE_TYPE_NAME (value));
|
||
else if (g_param_value_validate (pspec, &tmp_value) && !(pspec->flags & G_PARAM_LAX_VALIDATION))
|
||
{
|
||
gchar *contents = g_strdup_value_contents (value);
|
||
|
||
g_warning ("value \"%s\" of type '%s' is invalid for property '%s' of type '%s'",
|
||
contents,
|
||
G_VALUE_TYPE_NAME (value),
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
||
g_free (contents);
|
||
}
|
||
else
|
||
{
|
||
class->set_cell_property (area, renderer, PARAM_SPEC_PARAM_ID (pspec), &tmp_value, pspec);
|
||
}
|
||
g_value_unset (&tmp_value);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_set_valist:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer which inside @area
|
||
* @first_property_name: the name of the first cell property to set
|
||
* @var_args: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Sets one or more cell properties for @renderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_set_valist (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *first_property_name,
|
||
va_list var_args)
|
||
{
|
||
const gchar *name;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
name = first_property_name;
|
||
while (name)
|
||
{
|
||
GValue value = G_VALUE_INIT;
|
||
gchar *error = NULL;
|
||
GParamSpec *pspec =
|
||
g_param_spec_pool_lookup (cell_property_pool, name,
|
||
G_OBJECT_TYPE (area), TRUE);
|
||
if (!pspec)
|
||
{
|
||
g_warning ("%s: cell area class '%s' has no cell property named '%s'",
|
||
G_STRLOC, G_OBJECT_TYPE_NAME (area), name);
|
||
break;
|
||
}
|
||
if (!(pspec->flags & G_PARAM_WRITABLE))
|
||
{
|
||
g_warning ("%s: cell property '%s' of cell area class '%s' is not writable",
|
||
G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
|
||
break;
|
||
}
|
||
|
||
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
|
||
var_args, 0, &error);
|
||
if (error)
|
||
{
|
||
g_warning ("%s: %s", G_STRLOC, error);
|
||
g_free (error);
|
||
|
||
/* we purposely leak the value here, it might not be
|
||
* in a sane state if an error condition occoured
|
||
*/
|
||
break;
|
||
}
|
||
area_set_cell_property (area, renderer, pspec, &value);
|
||
g_value_unset (&value);
|
||
name = va_arg (var_args, gchar*);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_get_valist:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer inside @area
|
||
* @first_property_name: the name of the first property to get
|
||
* @var_args: return location for the first property, followed
|
||
* optionally by more name/return location pairs, followed by %NULL
|
||
*
|
||
* Gets the values of one or more cell properties for @renderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_get_valist (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *first_property_name,
|
||
va_list var_args)
|
||
{
|
||
const gchar *name;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
name = first_property_name;
|
||
while (name)
|
||
{
|
||
GValue value = G_VALUE_INIT;
|
||
GParamSpec *pspec;
|
||
gchar *error;
|
||
|
||
pspec = g_param_spec_pool_lookup (cell_property_pool, name,
|
||
G_OBJECT_TYPE (area), TRUE);
|
||
if (!pspec)
|
||
{
|
||
g_warning ("%s: cell area class '%s' has no cell property named '%s'",
|
||
G_STRLOC, G_OBJECT_TYPE_NAME (area), name);
|
||
break;
|
||
}
|
||
if (!(pspec->flags & G_PARAM_READABLE))
|
||
{
|
||
g_warning ("%s: cell property '%s' of cell area class '%s' is not readable",
|
||
G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
|
||
break;
|
||
}
|
||
|
||
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
area_get_cell_property (area, renderer, pspec, &value);
|
||
G_VALUE_LCOPY (&value, var_args, 0, &error);
|
||
if (error)
|
||
{
|
||
g_warning ("%s: %s", G_STRLOC, error);
|
||
g_free (error);
|
||
g_value_unset (&value);
|
||
break;
|
||
}
|
||
g_value_unset (&value);
|
||
name = va_arg (var_args, gchar*);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_set_property:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer inside @area
|
||
* @property_name: the name of the cell property to set
|
||
* @value: the value to set the cell property to
|
||
*
|
||
* Sets a cell property for @renderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_set_property (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *property_name,
|
||
const GValue *value)
|
||
{
|
||
GParamSpec *pspec;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (property_name != NULL);
|
||
g_return_if_fail (G_IS_VALUE (value));
|
||
|
||
pspec = g_param_spec_pool_lookup (cell_property_pool, property_name,
|
||
G_OBJECT_TYPE (area), TRUE);
|
||
if (!pspec)
|
||
g_warning ("%s: cell area class '%s' has no cell property named '%s'",
|
||
G_STRLOC, G_OBJECT_TYPE_NAME (area), property_name);
|
||
else if (!(pspec->flags & G_PARAM_WRITABLE))
|
||
g_warning ("%s: cell property '%s' of cell area class '%s' is not writable",
|
||
G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
|
||
else
|
||
{
|
||
area_set_cell_property (area, renderer, pspec, value);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_cell_get_property:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: a #GtkCellRenderer inside @area
|
||
* @property_name: the name of the property to get
|
||
* @value: a location to return the value
|
||
*
|
||
* Gets the value of a cell property for @renderer in @area.
|
||
*/
|
||
void
|
||
gtk_cell_area_cell_get_property (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
const gchar *property_name,
|
||
GValue *value)
|
||
{
|
||
GParamSpec *pspec;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (property_name != NULL);
|
||
g_return_if_fail (G_IS_VALUE (value));
|
||
|
||
pspec = g_param_spec_pool_lookup (cell_property_pool, property_name,
|
||
G_OBJECT_TYPE (area), TRUE);
|
||
if (!pspec)
|
||
g_warning ("%s: cell area class '%s' has no cell property named '%s'",
|
||
G_STRLOC, G_OBJECT_TYPE_NAME (area), property_name);
|
||
else if (!(pspec->flags & G_PARAM_READABLE))
|
||
g_warning ("%s: cell property '%s' of cell area class '%s' is not readable",
|
||
G_STRLOC, pspec->name, G_OBJECT_TYPE_NAME (area));
|
||
else
|
||
{
|
||
GValue *prop_value, tmp_value = G_VALUE_INIT;
|
||
|
||
/* auto-conversion of the callers value type
|
||
*/
|
||
if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
|
||
{
|
||
g_value_reset (value);
|
||
prop_value = value;
|
||
}
|
||
else if (!g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
|
||
{
|
||
g_warning ("can't retrieve cell property '%s' of type '%s' as value of type '%s'",
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
||
G_VALUE_TYPE_NAME (value));
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
prop_value = &tmp_value;
|
||
}
|
||
|
||
area_get_cell_property (area, renderer, pspec, prop_value);
|
||
|
||
if (prop_value != value)
|
||
{
|
||
g_value_transform (prop_value, value);
|
||
g_value_unset (&tmp_value);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*************************************************************
|
||
* API: Focus *
|
||
*************************************************************/
|
||
|
||
/**
|
||
* gtk_cell_area_is_activatable:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Returns whether the area can do anything when activated,
|
||
* after applying new attributes to @area.
|
||
*
|
||
* Returns: whether @area can do anything when activated.
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_is_activatable (GtkCellArea *area)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->is_activatable (area);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_focus:
|
||
* @area: a #GtkCellArea
|
||
* @direction: the #GtkDirectionType
|
||
*
|
||
* This should be called by the @area’s owning layout widget
|
||
* when focus is to be passed to @area, or moved within @area
|
||
* for a given @direction and row data.
|
||
*
|
||
* Implementing #GtkCellArea classes should implement this
|
||
* method to receive and navigate focus in its own way particular
|
||
* to how it lays out cells.
|
||
*
|
||
* Returns: %TRUE if focus remains inside @area as a result of this call.
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_focus (GtkCellArea *area,
|
||
GtkDirectionType direction)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->focus (area, direction);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_activate:
|
||
* @area: a #GtkCellArea
|
||
* @context: the #GtkCellAreaContext in context with the current row data
|
||
* @widget: the #GtkWidget that @area is rendering on
|
||
* @cell_area: the size and location of @area relative to @widget’s allocation
|
||
* @flags: the #GtkCellRendererState flags for @area for this row of data.
|
||
* @edit_only: if %TRUE then only cell renderers that are %GTK_CELL_RENDERER_MODE_EDITABLE
|
||
* will be activated.
|
||
*
|
||
* Activates @area, usually by activating the currently focused
|
||
* cell, however some subclasses which embed widgets in the area
|
||
* can also activate a widget if it currently has the focus.
|
||
*
|
||
* Returns: Whether @area was successfully activated.
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_activate (GtkCellArea *area,
|
||
GtkCellAreaContext *context,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags,
|
||
gboolean edit_only)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
|
||
return GTK_CELL_AREA_GET_CLASS (area)->activate (area, context, widget, cell_area, flags, edit_only);
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_cell_area_set_focus_cell:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to give focus to
|
||
*
|
||
* Explicitly sets the currently focused cell to @renderer.
|
||
*
|
||
* This is generally called by implementations of
|
||
* #GtkCellAreaClass.focus() or #GtkCellAreaClass.event(),
|
||
* however it can also be used to implement functions such
|
||
* as gtk_tree_view_set_cursor_on_cell().
|
||
*/
|
||
void
|
||
gtk_cell_area_set_focus_cell (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (renderer == NULL || GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
if (priv->focus_cell != renderer)
|
||
{
|
||
if (priv->focus_cell)
|
||
g_object_unref (priv->focus_cell);
|
||
|
||
priv->focus_cell = renderer;
|
||
|
||
if (priv->focus_cell)
|
||
g_object_ref (priv->focus_cell);
|
||
|
||
g_object_notify (G_OBJECT (area), "focus-cell");
|
||
}
|
||
|
||
/* Signal that the current focus renderer for this path changed
|
||
* (it may be that the focus cell did not change, but the row
|
||
* may have changed so we need to signal it) */
|
||
g_signal_emit (area, cell_area_signals[SIGNAL_FOCUS_CHANGED], 0,
|
||
priv->focus_cell, priv->current_path);
|
||
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_focus_cell:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Retrieves the currently focused cell for @area
|
||
*
|
||
* Returns: (transfer none): the currently focused cell in @area.
|
||
*/
|
||
GtkCellRenderer *
|
||
gtk_cell_area_get_focus_cell (GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
|
||
return priv->focus_cell;
|
||
}
|
||
|
||
|
||
/*************************************************************
|
||
* API: Focus Siblings *
|
||
*************************************************************/
|
||
|
||
/**
|
||
* gtk_cell_area_add_focus_sibling:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer expected to have focus
|
||
* @sibling: the #GtkCellRenderer to add to @renderer’s focus area
|
||
*
|
||
* Adds @sibling to @renderer’s focusable area, focus will be drawn
|
||
* around @renderer and all of its siblings if @renderer can
|
||
* focus for a given row.
|
||
*
|
||
* Events handled by focus siblings can also activate the given
|
||
* focusable @renderer.
|
||
*/
|
||
void
|
||
gtk_cell_area_add_focus_sibling (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellRenderer *sibling)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GList *siblings;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (sibling));
|
||
g_return_if_fail (renderer != sibling);
|
||
g_return_if_fail (gtk_cell_area_has_renderer (area, renderer));
|
||
g_return_if_fail (gtk_cell_area_has_renderer (area, sibling));
|
||
g_return_if_fail (!gtk_cell_area_is_focus_sibling (area, renderer, sibling));
|
||
|
||
/* XXX We should also check that sibling is not in any other renderer's sibling
|
||
* list already, a renderer can be sibling of only one focusable renderer
|
||
* at a time.
|
||
*/
|
||
|
||
siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
|
||
|
||
if (siblings)
|
||
{
|
||
G_GNUC_UNUSED GList *unused = g_list_append (siblings, sibling);
|
||
}
|
||
else
|
||
{
|
||
siblings = g_list_append (siblings, sibling);
|
||
g_hash_table_insert (priv->focus_siblings, renderer, siblings);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_remove_focus_sibling:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer expected to have focus
|
||
* @sibling: the #GtkCellRenderer to remove from @renderer’s focus area
|
||
*
|
||
* Removes @sibling from @renderer’s focus sibling list
|
||
* (see gtk_cell_area_add_focus_sibling()).
|
||
*/
|
||
void
|
||
gtk_cell_area_remove_focus_sibling (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellRenderer *sibling)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GList *siblings;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (sibling));
|
||
g_return_if_fail (gtk_cell_area_is_focus_sibling (area, renderer, sibling));
|
||
|
||
siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
|
||
|
||
siblings = g_list_copy (siblings);
|
||
siblings = g_list_remove (siblings, sibling);
|
||
|
||
if (!siblings)
|
||
g_hash_table_remove (priv->focus_siblings, renderer);
|
||
else
|
||
g_hash_table_insert (priv->focus_siblings, renderer, siblings);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_is_focus_sibling:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer expected to have focus
|
||
* @sibling: the #GtkCellRenderer to check against @renderer’s sibling list
|
||
*
|
||
* Returns whether @sibling is one of @renderer’s focus siblings
|
||
* (see gtk_cell_area_add_focus_sibling()).
|
||
*
|
||
* Returns: %TRUE if @sibling is a focus sibling of @renderer
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_is_focus_sibling (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellRenderer *sibling)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GList *siblings, *l;
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (sibling), FALSE);
|
||
|
||
siblings = g_hash_table_lookup (priv->focus_siblings, renderer);
|
||
|
||
for (l = siblings; l; l = l->next)
|
||
{
|
||
GtkCellRenderer *a_sibling = l->data;
|
||
|
||
if (a_sibling == sibling)
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_focus_siblings:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer expected to have focus
|
||
*
|
||
* Gets the focus sibling cell renderers for @renderer.
|
||
*
|
||
* Returns: (element-type GtkCellRenderer) (transfer none): A #GList of #GtkCellRenderers.
|
||
* The returned list is internal and should not be freed.
|
||
*/
|
||
const GList *
|
||
gtk_cell_area_get_focus_siblings (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), NULL);
|
||
|
||
return g_hash_table_lookup (priv->focus_siblings, renderer);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_focus_from_sibling:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer
|
||
*
|
||
* Gets the #GtkCellRenderer which is expected to be focusable
|
||
* for which @renderer is, or may be a sibling.
|
||
*
|
||
* This is handy for #GtkCellArea subclasses when handling events,
|
||
* after determining the renderer at the event location it can
|
||
* then chose to activate the focus cell for which the event
|
||
* cell may have been a sibling.
|
||
*
|
||
* Returns: (nullable) (transfer none): the #GtkCellRenderer for which @renderer
|
||
* is a sibling, or %NULL.
|
||
*/
|
||
GtkCellRenderer *
|
||
gtk_cell_area_get_focus_from_sibling (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellRenderer *ret_renderer = NULL;
|
||
GList *renderers, *l;
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), NULL);
|
||
|
||
renderers = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (area));
|
||
|
||
for (l = renderers; l; l = l->next)
|
||
{
|
||
GtkCellRenderer *a_renderer = l->data;
|
||
const GList *list;
|
||
|
||
for (list = gtk_cell_area_get_focus_siblings (area, a_renderer);
|
||
list; list = list->next)
|
||
{
|
||
GtkCellRenderer *sibling_renderer = list->data;
|
||
|
||
if (sibling_renderer == renderer)
|
||
{
|
||
ret_renderer = a_renderer;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
g_list_free (renderers);
|
||
|
||
return ret_renderer;
|
||
}
|
||
|
||
/*************************************************************
|
||
* API: Cell Activation/Editing *
|
||
*************************************************************/
|
||
static void
|
||
gtk_cell_area_add_editable (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellEditable *editable,
|
||
const GdkRectangle *cell_area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_signal_emit (area, cell_area_signals[SIGNAL_ADD_EDITABLE], 0,
|
||
renderer, editable, cell_area, priv->current_path);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_remove_editable (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkCellEditable *editable)
|
||
{
|
||
g_signal_emit (area, cell_area_signals[SIGNAL_REMOVE_EDITABLE], 0, renderer, editable);
|
||
}
|
||
|
||
static void
|
||
cell_area_remove_widget_cb (GtkCellEditable *editable,
|
||
GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_assert (priv->edit_widget == editable);
|
||
g_assert (priv->edited_cell != NULL);
|
||
|
||
gtk_cell_area_remove_editable (area, priv->edited_cell, priv->edit_widget);
|
||
|
||
/* Now that we're done with editing the widget and it can be removed,
|
||
* remove our references to the widget and disconnect handlers */
|
||
gtk_cell_area_set_edited_cell (area, NULL);
|
||
gtk_cell_area_set_edit_widget (area, NULL);
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_set_edited_cell (GtkCellArea *area,
|
||
GtkCellRenderer *renderer)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (renderer == NULL || GTK_IS_CELL_RENDERER (renderer));
|
||
|
||
if (priv->edited_cell != renderer)
|
||
{
|
||
if (priv->edited_cell)
|
||
g_object_unref (priv->edited_cell);
|
||
|
||
priv->edited_cell = renderer;
|
||
|
||
if (priv->edited_cell)
|
||
g_object_ref (priv->edited_cell);
|
||
|
||
g_object_notify (G_OBJECT (area), "edited-cell");
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_cell_area_set_edit_widget (GtkCellArea *area,
|
||
GtkCellEditable *editable)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (editable == NULL || GTK_IS_CELL_EDITABLE (editable));
|
||
|
||
if (priv->edit_widget != editable)
|
||
{
|
||
if (priv->edit_widget)
|
||
{
|
||
g_signal_handler_disconnect (priv->edit_widget, priv->remove_widget_id);
|
||
|
||
g_object_unref (priv->edit_widget);
|
||
}
|
||
|
||
priv->edit_widget = editable;
|
||
|
||
if (priv->edit_widget)
|
||
{
|
||
priv->remove_widget_id =
|
||
g_signal_connect (priv->edit_widget, "remove-widget",
|
||
G_CALLBACK (cell_area_remove_widget_cb), area);
|
||
|
||
g_object_ref (priv->edit_widget);
|
||
}
|
||
|
||
g_object_notify (G_OBJECT (area), "edit-widget");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_edited_cell:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Gets the #GtkCellRenderer in @area that is currently
|
||
* being edited.
|
||
*
|
||
* Returns: (transfer none): The currently edited #GtkCellRenderer
|
||
*/
|
||
GtkCellRenderer *
|
||
gtk_cell_area_get_edited_cell (GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
|
||
return priv->edited_cell;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_get_edit_widget:
|
||
* @area: a #GtkCellArea
|
||
*
|
||
* Gets the #GtkCellEditable widget currently used
|
||
* to edit the currently edited cell.
|
||
*
|
||
* Returns: (transfer none): The currently active #GtkCellEditable widget
|
||
*/
|
||
GtkCellEditable *
|
||
gtk_cell_area_get_edit_widget (GtkCellArea *area)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), NULL);
|
||
|
||
return priv->edit_widget;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_activate_cell:
|
||
* @area: a #GtkCellArea
|
||
* @widget: the #GtkWidget that @area is rendering onto
|
||
* @renderer: the #GtkCellRenderer in @area to activate
|
||
* @event: the #GdkEvent for which cell activation should occur
|
||
* @cell_area: the #GdkRectangle in @widget relative coordinates
|
||
* of @renderer for the current row.
|
||
* @flags: the #GtkCellRendererState for @renderer
|
||
*
|
||
* This is used by #GtkCellArea subclasses when handling events
|
||
* to activate cells, the base #GtkCellArea class activates cells
|
||
* for keyboard events for free in its own GtkCellArea->activate()
|
||
* implementation.
|
||
*
|
||
* Returns: whether cell activation was successful
|
||
*/
|
||
gboolean
|
||
gtk_cell_area_activate_cell (GtkCellArea *area,
|
||
GtkWidget *widget,
|
||
GtkCellRenderer *renderer,
|
||
GdkEvent *event,
|
||
const GdkRectangle *cell_area,
|
||
GtkCellRendererState flags)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
GtkCellRendererMode mode;
|
||
|
||
g_return_val_if_fail (GTK_IS_CELL_AREA (area), FALSE);
|
||
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER (renderer), FALSE);
|
||
g_return_val_if_fail (cell_area != NULL, FALSE);
|
||
|
||
if (!gtk_cell_renderer_get_sensitive (renderer))
|
||
return FALSE;
|
||
|
||
g_object_get (renderer, "mode", &mode, NULL);
|
||
|
||
if (mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE)
|
||
{
|
||
if (gtk_cell_renderer_activate (renderer,
|
||
event, widget,
|
||
priv->current_path,
|
||
cell_area,
|
||
cell_area,
|
||
flags))
|
||
return TRUE;
|
||
}
|
||
else if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
|
||
{
|
||
GtkCellEditable *editable_widget;
|
||
GdkRectangle inner_area;
|
||
|
||
gtk_cell_area_inner_cell_area (area, widget, cell_area, &inner_area);
|
||
|
||
editable_widget =
|
||
gtk_cell_renderer_start_editing (renderer,
|
||
event, widget,
|
||
priv->current_path,
|
||
&inner_area,
|
||
&inner_area,
|
||
flags);
|
||
|
||
if (editable_widget != NULL)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_EDITABLE (editable_widget), FALSE);
|
||
|
||
gtk_cell_area_set_edited_cell (area, renderer);
|
||
gtk_cell_area_set_edit_widget (area, editable_widget);
|
||
|
||
/* Signal that editing started so that callers can get
|
||
* a handle on the editable_widget */
|
||
gtk_cell_area_add_editable (area, priv->focus_cell, editable_widget, cell_area);
|
||
|
||
/* If the signal was successfully handled start the editing */
|
||
if (gtk_widget_get_parent (GTK_WIDGET (editable_widget)))
|
||
{
|
||
gtk_cell_editable_start_editing (editable_widget, event);
|
||
gtk_widget_grab_focus (GTK_WIDGET (editable_widget));
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise clear the editing state and fire a warning */
|
||
gtk_cell_area_set_edited_cell (area, NULL);
|
||
gtk_cell_area_set_edit_widget (area, NULL);
|
||
|
||
g_warning ("GtkCellArea::add-editable fired in the dark, no cell editing was started.");
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_stop_editing:
|
||
* @area: a #GtkCellArea
|
||
* @canceled: whether editing was canceled.
|
||
*
|
||
* Explicitly stops the editing of the currently edited cell.
|
||
*
|
||
* If @canceled is %TRUE, the currently edited cell renderer
|
||
* will emit the ::editing-canceled signal, otherwise the
|
||
* the ::editing-done signal will be emitted on the current
|
||
* edit widget.
|
||
*
|
||
* See gtk_cell_area_get_edited_cell() and gtk_cell_area_get_edit_widget().
|
||
*/
|
||
void
|
||
gtk_cell_area_stop_editing (GtkCellArea *area,
|
||
gboolean canceled)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
|
||
if (priv->edited_cell)
|
||
{
|
||
GtkCellEditable *edit_widget = g_object_ref (priv->edit_widget);
|
||
GtkCellRenderer *edit_cell = g_object_ref (priv->edited_cell);
|
||
|
||
/* Stop editing of the cell renderer */
|
||
gtk_cell_renderer_stop_editing (priv->edited_cell, canceled);
|
||
|
||
/* When editing is explicitly halted either
|
||
* the "editing-canceled" signal is emitted on the cell
|
||
* renderer or the "editing-done" signal on the GtkCellEditable widget
|
||
*/
|
||
if (!canceled)
|
||
gtk_cell_editable_editing_done (edit_widget);
|
||
|
||
/* Remove any references to the editable widget */
|
||
gtk_cell_area_set_edited_cell (area, NULL);
|
||
gtk_cell_area_set_edit_widget (area, NULL);
|
||
|
||
/* Send the remove-widget signal explicitly (this is done after setting
|
||
* the edit cell/widget NULL to avoid feedback)
|
||
*/
|
||
gtk_cell_area_remove_editable (area, edit_cell, edit_widget);
|
||
g_object_unref (edit_cell);
|
||
g_object_unref (edit_widget);
|
||
}
|
||
}
|
||
|
||
/*************************************************************
|
||
* API: Convenience for area implementations *
|
||
*************************************************************/
|
||
|
||
/**
|
||
* gtk_cell_area_inner_cell_area:
|
||
* @area: a #GtkCellArea
|
||
* @widget: the #GtkWidget that @area is rendering onto
|
||
* @cell_area: the @widget relative coordinates where one of @area’s cells
|
||
* is to be placed
|
||
* @inner_area: (out): the return location for the inner cell area
|
||
*
|
||
* This is a convenience function for #GtkCellArea implementations
|
||
* to get the inner area where a given #GtkCellRenderer will be
|
||
* rendered. It removes any padding previously added by gtk_cell_area_request_renderer().
|
||
*/
|
||
void
|
||
gtk_cell_area_inner_cell_area (GtkCellArea *area,
|
||
GtkWidget *widget,
|
||
const GdkRectangle *cell_area,
|
||
GdkRectangle *inner_area)
|
||
{
|
||
GtkBorder border;
|
||
GtkStyleContext *context;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (cell_area != NULL);
|
||
g_return_if_fail (inner_area != NULL);
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
gtk_style_context_get_padding (context, &border);
|
||
|
||
*inner_area = *cell_area;
|
||
|
||
inner_area->x += border.left;
|
||
inner_area->width -= border.left + border.right;
|
||
inner_area->y += border.top;
|
||
inner_area->height -= border.top + border.bottom;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_area_request_renderer:
|
||
* @area: a #GtkCellArea
|
||
* @renderer: the #GtkCellRenderer to request size for
|
||
* @orientation: the #GtkOrientation in which to request size
|
||
* @widget: the #GtkWidget that @area is rendering onto
|
||
* @for_size: the allocation contextual size to request for, or -1 if
|
||
* the base request for the orientation is to be returned.
|
||
* @minimum_size: (out) (allow-none): location to store the minimum size, or %NULL
|
||
* @natural_size: (out) (allow-none): location to store the natural size, or %NULL
|
||
*
|
||
* This is a convenience function for #GtkCellArea implementations
|
||
* to request size for cell renderers. It’s important to use this
|
||
* function to request size and then use gtk_cell_area_inner_cell_area()
|
||
* at render and event time since this function will add padding
|
||
* around the cell for focus painting.
|
||
*/
|
||
void
|
||
gtk_cell_area_request_renderer (GtkCellArea *area,
|
||
GtkCellRenderer *renderer,
|
||
GtkOrientation orientation,
|
||
GtkWidget *widget,
|
||
gint for_size,
|
||
gint *minimum_size,
|
||
gint *natural_size)
|
||
{
|
||
GtkBorder border;
|
||
GtkStyleContext *context;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (minimum_size != NULL);
|
||
g_return_if_fail (natural_size != NULL);
|
||
|
||
context = gtk_widget_get_style_context (widget);
|
||
gtk_style_context_get_padding (context, &border);
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
if (for_size < 0)
|
||
gtk_cell_renderer_get_preferred_width (renderer, widget, minimum_size, natural_size);
|
||
else
|
||
{
|
||
for_size = MAX (0, for_size - border.left - border.right);
|
||
|
||
gtk_cell_renderer_get_preferred_width_for_height (renderer, widget, for_size,
|
||
minimum_size, natural_size);
|
||
}
|
||
|
||
*minimum_size += border.left + border.right;
|
||
*natural_size += border.left + border.right;
|
||
}
|
||
else /* GTK_ORIENTATION_VERTICAL */
|
||
{
|
||
if (for_size < 0)
|
||
gtk_cell_renderer_get_preferred_height (renderer, widget, minimum_size, natural_size);
|
||
else
|
||
{
|
||
for_size = MAX (0, for_size - border.top - border.bottom);
|
||
|
||
gtk_cell_renderer_get_preferred_height_for_width (renderer, widget, for_size,
|
||
minimum_size, natural_size);
|
||
}
|
||
|
||
*minimum_size += border.top + border.bottom;
|
||
*natural_size += border.top + border.bottom;
|
||
}
|
||
}
|
||
|
||
void
|
||
_gtk_cell_area_set_cell_data_func_with_proxy (GtkCellArea *area,
|
||
GtkCellRenderer *cell,
|
||
GFunc func,
|
||
gpointer func_data,
|
||
GDestroyNotify destroy,
|
||
gpointer proxy)
|
||
{
|
||
GtkCellAreaPrivate *priv = gtk_cell_area_get_instance_private (area);
|
||
CellInfo *info;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_AREA (area));
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
|
||
|
||
info = g_hash_table_lookup (priv->cell_info, cell);
|
||
|
||
/* Note we do not take a reference to the proxy, the proxy is a GtkCellLayout
|
||
* that is forwarding its implementation to a delegate GtkCellArea therefore
|
||
* its life-cycle is longer than the area's life cycle.
|
||
*/
|
||
if (info)
|
||
{
|
||
if (info->destroy && info->data)
|
||
info->destroy (info->data);
|
||
|
||
if (func)
|
||
{
|
||
info->func = (GtkCellLayoutDataFunc)func;
|
||
info->data = func_data;
|
||
info->destroy = destroy;
|
||
info->proxy = proxy;
|
||
}
|
||
else
|
||
{
|
||
info->func = NULL;
|
||
info->data = NULL;
|
||
info->destroy = NULL;
|
||
info->proxy = NULL;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
info = cell_info_new ((GtkCellLayoutDataFunc)func, func_data, destroy);
|
||
info->proxy = proxy;
|
||
|
||
g_hash_table_insert (priv->cell_info, cell, info);
|
||
}
|
||
}
|