2019-09-11 11:11:02 +00:00
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/*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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#include "config.h"
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#include "gtkcenterlayout.h"
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#include "gtkcsspositionvalueprivate.h"
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#include "gtkintl.h"
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#include "gtklayoutchild.h"
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#include "gtkprivate.h"
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#include "gtksizerequest.h"
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#include "gtkwidgetprivate.h"
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2021-01-28 03:21:02 +00:00
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#include "gtkcssnodeprivate.h"
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2019-09-11 11:11:02 +00:00
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/**
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* SECTION:gtkcenterlayout
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* @Title: GtkCenterLayout
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* @Short_description: A centering layout
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*
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* A #GtkCenterLayout is a layout manager that manages up to three children.
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* The start widget is allocated at the start of the layout (left in LRT
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* layouts and right in RTL ones), and the end widget at the end.
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*
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* The center widget is centered regarding the full width of the layout's.
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*/
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struct _GtkCenterLayout
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{
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GtkLayoutManager parent_instance;
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GtkBaselinePosition baseline_pos;
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GtkOrientation orientation;
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union {
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struct {
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GtkWidget *start_widget;
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GtkWidget *center_widget;
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GtkWidget *end_widget;
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};
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GtkWidget *children[3];
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};
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};
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G_DEFINE_TYPE (GtkCenterLayout, gtk_center_layout, GTK_TYPE_LAYOUT_MANAGER)
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static int
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get_spacing (GtkCenterLayout *self,
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GtkCssNode *node)
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2019-09-11 11:11:02 +00:00
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{
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GtkCssStyle *style = gtk_css_node_get_style (node);
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2019-09-11 11:11:02 +00:00
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GtkCssValue *border_spacing;
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int css_spacing;
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2021-01-28 03:21:02 +00:00
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border_spacing = style->size->border_spacing;
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if (self->orientation == GTK_ORIENTATION_HORIZONTAL)
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css_spacing = _gtk_css_position_value_get_x (border_spacing, 100);
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else
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css_spacing = _gtk_css_position_value_get_y (border_spacing, 100);
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return css_spacing;
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}
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static GtkSizeRequestMode
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gtk_center_layout_get_request_mode (GtkLayoutManager *layout_manager,
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GtkWidget *widget)
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{
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GtkCenterLayout *self = GTK_CENTER_LAYOUT (layout_manager);
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int count[3] = { 0, 0, 0 };
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if (self->start_widget)
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count[gtk_widget_get_request_mode (self->start_widget)]++;
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if (self->center_widget)
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count[gtk_widget_get_request_mode (self->center_widget)]++;
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if (self->end_widget)
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count[gtk_widget_get_request_mode (self->end_widget)]++;
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if (!count[GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH] &&
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!count[GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT])
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return GTK_SIZE_REQUEST_CONSTANT_SIZE;
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else
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return count[GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT] > count[GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH]
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? GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT
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: GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
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}
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static gboolean
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get_expand (GtkWidget *widget,
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GtkOrientation orientation)
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{
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if (orientation == GTK_ORIENTATION_HORIZONTAL)
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return gtk_widget_get_hexpand (widget);
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else
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return gtk_widget_get_vexpand (widget);
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}
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static void
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gtk_center_layout_distribute (GtkCenterLayout *self,
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int for_size,
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int size,
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int spacing,
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GtkRequestedSize *sizes)
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{
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int center_size = 0;
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int start_size = 0;
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int end_size = 0;
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gboolean center_expand = FALSE;
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gboolean start_expand = FALSE;
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gboolean end_expand = FALSE;
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int avail;
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int i;
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2020-08-24 03:15:57 +00:00
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int needed_spacing = 0;
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2019-09-11 11:11:02 +00:00
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/* Usable space is really less... */
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2020-08-24 03:15:57 +00:00
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for (i = 0; i < 3; i++)
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{
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if (self->children[i])
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needed_spacing += spacing;
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}
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needed_spacing -= spacing;
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2019-09-11 11:11:02 +00:00
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sizes[0].minimum_size = sizes[0].natural_size = 0;
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sizes[1].minimum_size = sizes[1].natural_size = 0;
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sizes[2].minimum_size = sizes[2].natural_size = 0;
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for (i = 0; i < 3; i ++)
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{
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if (self->children[i])
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gtk_widget_measure (self->children[i], self->orientation, for_size,
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&sizes[i].minimum_size, &sizes[i].natural_size,
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NULL, NULL);
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}
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if (self->center_widget)
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{
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2020-08-24 03:15:57 +00:00
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center_size = CLAMP (size - needed_spacing - (sizes[0].minimum_size + sizes[2].minimum_size), sizes[1].minimum_size, sizes[1].natural_size);
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center_expand = get_expand (self->center_widget, self->orientation);
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}
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if (self->start_widget)
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{
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2020-08-24 03:15:57 +00:00
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avail = MIN ((size - needed_spacing - center_size) / 2, size - needed_spacing - (center_size + sizes[2].minimum_size));
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2019-09-11 11:11:02 +00:00
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start_size = CLAMP (avail, sizes[0].minimum_size, sizes[0].natural_size);
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start_expand = get_expand (self->start_widget, self->orientation);
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}
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if (self->end_widget)
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{
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2020-08-24 03:15:57 +00:00
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avail = MIN ((size - needed_spacing - center_size) / 2, size - needed_spacing - (center_size + sizes[0].minimum_size));
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2019-09-11 11:11:02 +00:00
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end_size = CLAMP (avail, sizes[2].minimum_size, sizes[2].natural_size);
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end_expand = get_expand (self->end_widget, self->orientation);
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}
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if (self->center_widget)
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{
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int center_pos;
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center_pos = (size / 2) - (center_size / 2);
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/* Push in from start/end */
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2020-08-24 03:15:57 +00:00
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if (start_size > 0 && start_size + spacing > center_pos)
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center_pos = start_size + spacing;
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else if (end_size > 0 && size - end_size - spacing < center_pos + center_size)
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center_pos = size - center_size - end_size - spacing;
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2019-09-11 11:11:02 +00:00
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else if (center_expand)
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{
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2021-01-01 16:02:57 +00:00
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center_size = size - 2 * (MAX (start_size, end_size) + spacing);
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2020-08-24 03:15:57 +00:00
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center_pos = (size / 2) - (center_size / 2) + spacing;
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2019-09-11 11:11:02 +00:00
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}
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if (start_expand)
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start_size = center_pos - spacing;
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2019-09-11 11:11:02 +00:00
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if (end_expand)
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2020-08-24 03:15:57 +00:00
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end_size = size - (center_pos + center_size) - spacing;
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2019-09-11 11:11:02 +00:00
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}
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else
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{
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avail = size - needed_spacing - (start_size + end_size);
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2019-09-11 11:11:02 +00:00
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if (start_expand && end_expand)
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{
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start_size += avail / 2;
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end_size += avail / 2;
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}
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else if (start_expand)
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{
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start_size += avail;
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}
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else if (end_expand)
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{
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end_size += avail;
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}
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}
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sizes[0].minimum_size = start_size;
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sizes[1].minimum_size = center_size;
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sizes[2].minimum_size = end_size;
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}
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static void
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gtk_center_layout_measure_orientation (GtkCenterLayout *self,
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GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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int min[3];
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int nat[3];
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int n_visible_children = 0;
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int spacing;
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int i;
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2021-01-28 03:21:02 +00:00
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spacing = get_spacing (self, gtk_widget_get_css_node (widget));
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2019-09-11 11:11:02 +00:00
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for (i = 0; i < 3; i ++)
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{
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GtkWidget *child = self->children[i];
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if (child)
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{
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gtk_widget_measure (child,
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orientation,
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for_size,
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&min[i], &nat[i], NULL, NULL);
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if (_gtk_widget_get_visible (child))
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n_visible_children ++;
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}
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else
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{
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min[i] = 0;
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nat[i] = 0;
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}
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}
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*minimum = min[0] + min[1] + min[2];
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*natural = nat[1] + 2 * MAX (nat[0], nat[2]);
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if (n_visible_children > 0)
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{
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*minimum += (n_visible_children - 1) * spacing;
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*natural += (n_visible_children - 1) * spacing;
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}
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}
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static void
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gtk_center_layout_measure_opposite (GtkCenterLayout *self,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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int child_min, child_nat;
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int child_min_baseline, child_nat_baseline;
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int total_min, above_min, below_min;
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int total_nat, above_nat, below_nat;
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GtkWidget *child[3];
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GtkRequestedSize sizes[3];
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int i;
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child[0] = self->start_widget;
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child[1] = self->center_widget;
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child[2] = self->end_widget;
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if (for_size >= 0)
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gtk_center_layout_distribute (self, -1, for_size, 0, sizes);
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above_min = below_min = above_nat = below_nat = -1;
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total_min = total_nat = 0;
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for (i = 0; i < 3; i++)
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{
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if (child[i] == NULL)
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continue;
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gtk_widget_measure (child[i],
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orientation,
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for_size >= 0 ? sizes[i].minimum_size : -1,
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&child_min, &child_nat,
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&child_min_baseline, &child_nat_baseline);
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if (child_min_baseline >= 0)
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{
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below_min = MAX (below_min, child_min - child_min_baseline);
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above_min = MAX (above_min, child_min_baseline);
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below_nat = MAX (below_nat, child_nat - child_nat_baseline);
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above_nat = MAX (above_nat, child_nat_baseline);
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}
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else
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{
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total_min = MAX (total_min, child_min);
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total_nat = MAX (total_nat, child_nat);
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}
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}
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if (above_min >= 0)
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{
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int min_baseline = -1;
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int nat_baseline = -1;
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total_min = MAX (total_min, above_min + below_min);
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total_nat = MAX (total_nat, above_nat + below_nat);
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switch (self->baseline_pos)
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{
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case GTK_BASELINE_POSITION_TOP:
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min_baseline = above_min;
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nat_baseline = above_nat;
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break;
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case GTK_BASELINE_POSITION_CENTER:
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min_baseline = above_min + (total_min - (above_min + below_min)) / 2;
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nat_baseline = above_nat + (total_nat - (above_nat + below_nat)) / 2;
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break;
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case GTK_BASELINE_POSITION_BOTTOM:
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min_baseline = total_min - below_min;
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nat_baseline = total_nat - below_nat;
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break;
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default:
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break;
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}
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if (minimum_baseline)
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*minimum_baseline = min_baseline;
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if (natural_baseline)
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*natural_baseline = nat_baseline;
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}
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*minimum = total_min;
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*natural = total_nat;
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}
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static void
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gtk_center_layout_measure (GtkLayoutManager *layout_manager,
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GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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|
|
int *minimum_baseline,
|
|
|
|
int *natural_baseline)
|
|
|
|
{
|
|
|
|
GtkCenterLayout *self = GTK_CENTER_LAYOUT (layout_manager);
|
|
|
|
|
|
|
|
if (self->orientation == orientation)
|
|
|
|
gtk_center_layout_measure_orientation (self, widget, orientation, for_size,
|
|
|
|
minimum, natural, minimum_baseline, natural_baseline);
|
|
|
|
else
|
|
|
|
gtk_center_layout_measure_opposite (self, orientation, for_size,
|
|
|
|
minimum, natural, minimum_baseline, natural_baseline);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gtk_center_layout_allocate (GtkLayoutManager *layout_manager,
|
|
|
|
GtkWidget *widget,
|
|
|
|
int width,
|
|
|
|
int height,
|
|
|
|
int baseline)
|
|
|
|
{
|
|
|
|
GtkCenterLayout *self = GTK_CENTER_LAYOUT (layout_manager);
|
|
|
|
GtkWidget *child[3];
|
|
|
|
int child_size[3];
|
|
|
|
int child_pos[3];
|
|
|
|
GtkRequestedSize sizes[3];
|
|
|
|
int size;
|
|
|
|
int for_size;
|
|
|
|
int i;
|
|
|
|
int spacing;
|
|
|
|
|
2021-01-28 03:21:02 +00:00
|
|
|
spacing = get_spacing (self, gtk_widget_get_css_node (widget));
|
2019-09-11 11:11:02 +00:00
|
|
|
|
|
|
|
if (self->orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
|
|
{
|
|
|
|
size = width;
|
|
|
|
for_size = height;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
size = height;
|
|
|
|
for_size = width;
|
|
|
|
baseline = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate child sizes */
|
|
|
|
|
|
|
|
gtk_center_layout_distribute (self, for_size, size, spacing, sizes);
|
|
|
|
|
|
|
|
child[1] = self->center_widget;
|
|
|
|
child_size[1] = sizes[1].minimum_size;
|
|
|
|
|
|
|
|
if (self->orientation == GTK_ORIENTATION_HORIZONTAL &&
|
|
|
|
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
|
|
|
|
{
|
|
|
|
child[0] = self->end_widget;
|
|
|
|
child[2] = self->start_widget;
|
|
|
|
child_size[0] = sizes[2].minimum_size;
|
|
|
|
child_size[2] = sizes[0].minimum_size;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
child[0] = self->start_widget;
|
|
|
|
child[2] = self->end_widget;
|
|
|
|
child_size[0] = sizes[0].minimum_size;
|
|
|
|
child_size[2] = sizes[2].minimum_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determine baseline */
|
|
|
|
if (self->orientation == GTK_ORIENTATION_HORIZONTAL &&
|
|
|
|
baseline == -1)
|
|
|
|
{
|
|
|
|
int min_above, nat_above;
|
|
|
|
int min_below, nat_below;
|
|
|
|
gboolean have_baseline;
|
|
|
|
|
|
|
|
have_baseline = FALSE;
|
|
|
|
min_above = nat_above = 0;
|
|
|
|
min_below = nat_below = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
{
|
|
|
|
if (child[i] && gtk_widget_get_valign (child[i]) == GTK_ALIGN_BASELINE)
|
|
|
|
{
|
|
|
|
int child_min_height, child_nat_height;
|
|
|
|
int child_min_baseline, child_nat_baseline;
|
|
|
|
|
|
|
|
child_min_baseline = child_nat_baseline = -1;
|
|
|
|
|
|
|
|
gtk_widget_measure (child[i], GTK_ORIENTATION_VERTICAL,
|
|
|
|
child_size[i],
|
|
|
|
&child_min_height, &child_nat_height,
|
|
|
|
&child_min_baseline, &child_nat_baseline);
|
|
|
|
|
|
|
|
if (child_min_baseline >= 0)
|
|
|
|
{
|
|
|
|
have_baseline = TRUE;
|
|
|
|
min_below = MAX (min_below, child_min_height - child_min_baseline);
|
|
|
|
nat_below = MAX (nat_below, child_nat_height - child_nat_baseline);
|
|
|
|
min_above = MAX (min_above, child_min_baseline);
|
|
|
|
nat_above = MAX (nat_above, child_nat_baseline);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (have_baseline)
|
|
|
|
{
|
|
|
|
/* TODO: This is purely based on the minimum baseline.
|
|
|
|
* When things fit we should use the natural one
|
|
|
|
*/
|
|
|
|
switch (self->baseline_pos)
|
|
|
|
{
|
|
|
|
default:
|
|
|
|
case GTK_BASELINE_POSITION_TOP:
|
|
|
|
baseline = min_above;
|
|
|
|
break;
|
|
|
|
case GTK_BASELINE_POSITION_CENTER:
|
|
|
|
baseline = min_above + (height - (min_above + min_below)) / 2;
|
|
|
|
break;
|
|
|
|
case GTK_BASELINE_POSITION_BOTTOM:
|
|
|
|
baseline = height - min_below;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate child positions */
|
|
|
|
|
|
|
|
child_pos[0] = 0;
|
|
|
|
child_pos[1] = (size / 2) - (child_size[1] / 2);
|
|
|
|
child_pos[2] = size - child_size[2];
|
|
|
|
|
|
|
|
if (child[1])
|
|
|
|
{
|
|
|
|
/* Push in from start/end */
|
2020-08-24 03:15:57 +00:00
|
|
|
if (child_size[0] > 0 && child_size[0] + spacing > child_pos[1])
|
|
|
|
child_pos[1] = child_size[0] + spacing;
|
|
|
|
else if (child_size[2] > 0 && size - child_size[2] - spacing < child_pos[1] + child_size[1])
|
|
|
|
child_pos[1] = size - child_size[1] - child_size[2] - spacing;
|
2019-09-11 11:11:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < 3; i++)
|
|
|
|
{
|
|
|
|
GtkAllocation child_allocation;
|
|
|
|
|
|
|
|
if (child[i] == NULL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (self->orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
|
|
{
|
|
|
|
child_allocation.x = child_pos[i];
|
|
|
|
child_allocation.y = 0;
|
|
|
|
child_allocation.width = child_size[i];
|
|
|
|
child_allocation.height = height;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
child_allocation.x = 0;
|
|
|
|
child_allocation.y = child_pos[i];
|
|
|
|
child_allocation.width = width;
|
|
|
|
child_allocation.height = child_size[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
gtk_widget_size_allocate (child[i], &child_allocation, baseline);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gtk_center_layout_class_init (GtkCenterLayoutClass *klass)
|
|
|
|
{
|
|
|
|
GtkLayoutManagerClass *layout_class = GTK_LAYOUT_MANAGER_CLASS (klass);
|
|
|
|
|
|
|
|
layout_class->get_request_mode = gtk_center_layout_get_request_mode;
|
|
|
|
layout_class->measure = gtk_center_layout_measure;
|
|
|
|
layout_class->allocate = gtk_center_layout_allocate;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gtk_center_layout_init (GtkCenterLayout *self)
|
|
|
|
{
|
|
|
|
self->orientation = GTK_ORIENTATION_HORIZONTAL;
|
|
|
|
self->baseline_pos = GTK_BASELINE_POSITION_CENTER;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_new:
|
|
|
|
*
|
|
|
|
* Creates a new #GtkCenterLayout.
|
|
|
|
*
|
|
|
|
* Returns: the newly created #GtkCenterLayout
|
|
|
|
*/
|
|
|
|
GtkLayoutManager *
|
|
|
|
gtk_center_layout_new (void)
|
|
|
|
{
|
|
|
|
return g_object_new (GTK_TYPE_CENTER_LAYOUT, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_set_orientation:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
* @orientation: the new orientation
|
|
|
|
*
|
|
|
|
* Sets the orientation of @self.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
gtk_center_layout_set_orientation (GtkCenterLayout *self,
|
|
|
|
GtkOrientation orientation)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_if_fail (GTK_IS_CENTER_LAYOUT (self));
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
if (orientation != self->orientation)
|
|
|
|
{
|
|
|
|
self->orientation = orientation;
|
|
|
|
gtk_layout_manager_layout_changed (GTK_LAYOUT_MANAGER (self));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_get_orientation:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
*
|
2020-04-20 02:50:35 +00:00
|
|
|
* Gets the current orienration of the layout manager.
|
2019-09-11 11:11:02 +00:00
|
|
|
*
|
|
|
|
* Returns: The current orientation of @self
|
|
|
|
*/
|
|
|
|
GtkOrientation
|
|
|
|
gtk_center_layout_get_orientation (GtkCenterLayout *self)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_val_if_fail (GTK_IS_CENTER_LAYOUT (self), GTK_ORIENTATION_HORIZONTAL);
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
return self->orientation;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_set_baseline_position:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
* @baseline_position: the new baseline position
|
|
|
|
*
|
|
|
|
* Sets the new baseline position of @self
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
gtk_center_layout_set_baseline_position (GtkCenterLayout *self,
|
|
|
|
GtkBaselinePosition baseline_position)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_if_fail (GTK_IS_CENTER_LAYOUT (self));
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
if (baseline_position != self->baseline_pos)
|
|
|
|
{
|
|
|
|
self->baseline_pos = baseline_position;
|
|
|
|
gtk_layout_manager_layout_changed (GTK_LAYOUT_MANAGER (self));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_get_baseline_position:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
*
|
2020-04-20 02:50:35 +00:00
|
|
|
* Returns the baseline position of the layout.
|
|
|
|
*
|
2019-09-11 11:11:02 +00:00
|
|
|
* Returns: The current baseline position of @self.
|
|
|
|
*/
|
|
|
|
GtkBaselinePosition
|
|
|
|
gtk_center_layout_get_baseline_position (GtkCenterLayout *self)
|
|
|
|
{
|
2020-12-01 14:44:28 +00:00
|
|
|
g_return_val_if_fail (GTK_IS_CENTER_LAYOUT (self), GTK_BASELINE_POSITION_TOP);
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
return self->baseline_pos;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_set_start_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
2020-12-01 14:44:28 +00:00
|
|
|
* @widget: (nullable): the new start widget
|
2019-09-11 11:11:02 +00:00
|
|
|
*
|
|
|
|
* Sets the new start widget of @self.
|
2020-12-01 04:36:23 +00:00
|
|
|
*
|
|
|
|
* To remove the existing start widget, pass %NULL.
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
gtk_center_layout_set_start_widget (GtkCenterLayout *self,
|
|
|
|
GtkWidget *widget)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_if_fail (GTK_IS_CENTER_LAYOUT (self));
|
|
|
|
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
|
|
|
|
|
|
|
|
if (self->start_widget == widget)
|
|
|
|
return;
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
self->start_widget = widget;
|
2020-12-01 14:45:01 +00:00
|
|
|
gtk_layout_manager_layout_changed (GTK_LAYOUT_MANAGER (self));
|
2019-09-11 11:11:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_get_start_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
*
|
2020-04-20 02:50:35 +00:00
|
|
|
* Returns the start widget fo the layout.
|
|
|
|
*
|
2020-11-24 18:27:33 +00:00
|
|
|
* Returns: (nullable) (transfer none): The current start widget of @self
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
GtkWidget *
|
|
|
|
gtk_center_layout_get_start_widget (GtkCenterLayout *self)
|
|
|
|
{
|
2020-12-01 14:44:28 +00:00
|
|
|
g_return_val_if_fail (GTK_IS_CENTER_LAYOUT (self), NULL);
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
return self->start_widget;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_set_center_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
2020-12-01 14:44:28 +00:00
|
|
|
* @widget: (nullable): the new center widget
|
2019-09-11 11:11:02 +00:00
|
|
|
*
|
2020-12-01 04:36:23 +00:00
|
|
|
* Sets the new center widget of @self.
|
|
|
|
*
|
|
|
|
* To remove the existing center widget, pass %NULL.
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
gtk_center_layout_set_center_widget (GtkCenterLayout *self,
|
|
|
|
GtkWidget *widget)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_if_fail (GTK_IS_CENTER_LAYOUT (self));
|
|
|
|
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
|
|
|
|
|
|
|
|
if (self->center_widget == widget)
|
|
|
|
return;
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
self->center_widget = widget;
|
2020-12-01 14:45:01 +00:00
|
|
|
gtk_layout_manager_layout_changed (GTK_LAYOUT_MANAGER (self));
|
2019-09-11 11:11:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_get_center_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
*
|
2020-04-20 02:50:35 +00:00
|
|
|
* Returns the center widget of the layout.
|
|
|
|
*
|
2020-11-24 18:27:33 +00:00
|
|
|
* Returns: (nullable) (transfer none): the current center widget of @self
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
GtkWidget *
|
|
|
|
gtk_center_layout_get_center_widget (GtkCenterLayout *self)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_val_if_fail (GTK_IS_CENTER_LAYOUT (self), NULL);
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
return self->center_widget;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_set_end_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
2020-11-24 18:27:33 +00:00
|
|
|
* @widget: (nullable) (transfer none): the new end widget
|
2019-09-11 11:11:02 +00:00
|
|
|
*
|
2020-12-01 04:36:23 +00:00
|
|
|
* Sets the new end widget of @self.
|
|
|
|
*
|
|
|
|
* To remove the existing center widget, pass %NULL.
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
void
|
|
|
|
gtk_center_layout_set_end_widget (GtkCenterLayout *self,
|
|
|
|
GtkWidget *widget)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_if_fail (GTK_IS_CENTER_LAYOUT (self));
|
|
|
|
g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
|
|
|
|
|
|
|
|
if (self->end_widget == widget)
|
|
|
|
return;
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
self->end_widget = widget;
|
2020-12-01 14:45:01 +00:00
|
|
|
gtk_layout_manager_layout_changed (GTK_LAYOUT_MANAGER (self));
|
2019-09-11 11:11:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gtk_center_layout_get_end_widget:
|
|
|
|
* @self: a #GtkCenterLayout
|
|
|
|
*
|
2020-04-20 02:50:35 +00:00
|
|
|
* Returns the end widget of the layout.
|
|
|
|
*
|
2020-11-24 18:27:33 +00:00
|
|
|
* Returns: (nullable) (transfer none): the current end widget of @self
|
2019-09-11 11:11:02 +00:00
|
|
|
*/
|
|
|
|
GtkWidget *
|
|
|
|
gtk_center_layout_get_end_widget (GtkCenterLayout *self)
|
|
|
|
{
|
2020-12-01 14:45:01 +00:00
|
|
|
g_return_val_if_fail (GTK_IS_CENTER_LAYOUT (self), NULL);
|
|
|
|
|
2019-09-11 11:11:02 +00:00
|
|
|
return self->end_widget;
|
|
|
|
}
|