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Learning_GTK4_tree/gtk/gtkcolumnviewtitle.c

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/*
* Copyright © 2019 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtkcolumnviewtitleprivate.h"
#include "gtkcolumnviewprivate.h"
#include "gtkcolumnviewcolumnprivate.h"
#include "gtkcolumnviewsorterprivate.h"
#include "gtkcssboxesprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkprivate.h"
#include "gtklabel.h"
#include "gtkwidgetprivate.h"
#include "gtkbox.h"
#include "gtkbuiltiniconprivate.h"
#include "gtkgestureclick.h"
#include "gtkpopovermenu.h"
#include "gtknative.h"
struct _GtkColumnViewTitle
{
GtkWidget parent_instance;
GtkColumnViewColumn *column;
GtkWidget *box;
GtkWidget *title;
GtkWidget *sort;
GtkWidget *popup_menu;
};
struct _GtkColumnViewTitleClass
{
GtkWidgetClass parent_class;
};
G_DEFINE_TYPE (GtkColumnViewTitle, gtk_column_view_title, GTK_TYPE_WIDGET)
static int
unadjust_width (GtkWidget *widget,
int width)
{
GtkCssBoxes boxes;
if (width <= -1)
return -1;
gtk_css_boxes_init_border_box (&boxes,
gtk_css_node_get_style (gtk_widget_get_css_node (widget)),
0, 0,
width, 100000);
return MAX (0, floor (gtk_css_boxes_get_content_rect (&boxes)->size.width));
}
static void
gtk_column_view_title_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkColumnViewTitle *self = GTK_COLUMN_VIEW_TITLE (widget);
GtkWidget *child = gtk_widget_get_first_child (widget);
int fixed_width, unadj_width;
fixed_width = gtk_column_view_column_get_fixed_width (self->column);
unadj_width = unadjust_width (widget, fixed_width);
if (orientation == GTK_ORIENTATION_VERTICAL)
{
if (fixed_width > -1)
{
int min;
if (for_size == -1)
for_size = unadj_width;
else
for_size = MIN (for_size, unadj_width);
gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, -1, &min, NULL, NULL, NULL);
for_size = MAX (for_size, min);
}
}
if (child)
gtk_widget_measure (child, orientation, for_size, minimum, natural, minimum_baseline, natural_baseline);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (fixed_width > -1)
{
*minimum = 0;
*natural = unadj_width;
}
}
}
static void
gtk_column_view_title_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkColumnViewTitle *self = GTK_COLUMN_VIEW_TITLE (widget);
GtkWidget *child = gtk_widget_get_first_child (widget);
if (child)
{
int min;
gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, height, &min, NULL, NULL, NULL);
gtk_widget_allocate (child, MAX (min, width), height, baseline, NULL);
}
if (self->popup_menu)
gtk_popover_present (GTK_POPOVER (self->popup_menu));
}
static void
gtk_column_view_title_dispose (GObject *object)
{
GtkColumnViewTitle *self = GTK_COLUMN_VIEW_TITLE (object);
g_clear_pointer (&self->box, gtk_widget_unparent);
g_clear_pointer (&self->popup_menu, gtk_widget_unparent);
g_clear_object (&self->column);
G_OBJECT_CLASS (gtk_column_view_title_parent_class)->dispose (object);
}
static void
gtk_column_view_title_class_init (GtkColumnViewTitleClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
widget_class->measure = gtk_column_view_title_measure;
widget_class->size_allocate = gtk_column_view_title_size_allocate;
gobject_class->dispose = gtk_column_view_title_dispose;
gtk_widget_class_set_css_name (widget_class, I_("button"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_COLUMN_HEADER);
}
static void
gtk_column_view_title_resize_func (GtkWidget *widget)
{
GtkColumnViewTitle *self = GTK_COLUMN_VIEW_TITLE (widget);
if (self->column)
gtk_column_view_column_queue_resize (self->column);
}
static void
activate_sort (GtkColumnViewTitle *self)
{
GtkSorter *sorter;
GtkColumnView *view;
GtkColumnViewSorter *view_sorter;
sorter = gtk_column_view_column_get_sorter (self->column);
if (sorter == NULL)
return;
view = gtk_column_view_column_get_column_view (self->column);
view_sorter = GTK_COLUMN_VIEW_SORTER (gtk_column_view_get_sorter (view));
gtk_column_view_sorter_add_column (view_sorter, self->column);
}
static void
show_menu (GtkColumnViewTitle *self,
double x,
double y)
{
if (!self->popup_menu)
{
GMenuModel *model;
model = gtk_column_view_column_get_header_menu (self->column);
if (!model)
return;
self->popup_menu = gtk_popover_menu_new_from_model (model);
gtk_widget_set_parent (self->popup_menu, GTK_WIDGET (self));
gtk_popover_set_position (GTK_POPOVER (self->popup_menu), GTK_POS_BOTTOM);
gtk_popover_set_has_arrow (GTK_POPOVER (self->popup_menu), FALSE);
gtk_widget_set_halign (self->popup_menu, GTK_ALIGN_START);
}
if (x != -1 && y != -1)
{
GdkRectangle rect = { x, y, 1, 1 };
gtk_popover_set_pointing_to (GTK_POPOVER (self->popup_menu), &rect);
}
else
gtk_popover_set_pointing_to (GTK_POPOVER (self->popup_menu), NULL);
gtk_popover_popup (GTK_POPOVER (self->popup_menu));
}
static void
click_released_cb (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkWidget *widget)
{
GtkColumnViewTitle *self = GTK_COLUMN_VIEW_TITLE (widget);
guint button;
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
if (button == GDK_BUTTON_PRIMARY)
activate_sort (self);
else if (button == GDK_BUTTON_SECONDARY)
show_menu (self, x, y);
}
static void
click_pressed_cb (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkColumnView *self)
{
/* Claim the state here to prevent propagation, the event controllers in
* GtkColumView have already been handled in the CAPTURE phase */
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
static void
gtk_column_view_title_init (GtkColumnViewTitle *self)
{
GtkWidget *widget = GTK_WIDGET (self);
GtkGesture *gesture;
widget->priv->resize_func = gtk_column_view_title_resize_func;
gtk_widget_set_overflow (widget, GTK_OVERFLOW_HIDDEN);
self->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_set_parent (self->box, widget);
self->title = gtk_label_new (NULL);
gtk_box_append (GTK_BOX (self->box), self->title);
self->sort = gtk_builtin_icon_new ("sort-indicator");
gtk_box_append (GTK_BOX (self->box), self->sort);
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
g_signal_connect (gesture, "released", G_CALLBACK (click_released_cb), self);
g_signal_connect (gesture, "pressed", G_CALLBACK (click_pressed_cb), self);
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
}
GtkWidget *
gtk_column_view_title_new (GtkColumnViewColumn *column)
{
GtkColumnViewTitle *title;
title = g_object_new (GTK_TYPE_COLUMN_VIEW_TITLE, NULL);
title->column = g_object_ref (column);
gtk_column_view_title_update_sort (title);
gtk_column_view_title_set_title (title, gtk_column_view_column_get_title (column));
gtk_column_view_title_set_menu (title, gtk_column_view_column_get_header_menu (column));
return GTK_WIDGET (title);
}
void
gtk_column_view_title_set_title (GtkColumnViewTitle *self,
const char *title)
{
gtk_label_set_label (GTK_LABEL (self->title), title);
}
void
gtk_column_view_title_set_menu (GtkColumnViewTitle *self,
GMenuModel *model)
{
g_clear_pointer (&self->popup_menu, gtk_widget_unparent);
}
void
gtk_column_view_title_update_sort (GtkColumnViewTitle *self)
{
if (gtk_column_view_column_get_sorter (self->column))
{
GtkColumnView *view;
GtkColumnViewSorter *view_sorter;
GtkColumnViewColumn *primary;
GtkSortType sort_order;
view = gtk_column_view_column_get_column_view (self->column);
view_sorter = GTK_COLUMN_VIEW_SORTER (gtk_column_view_get_sorter (view));
primary = gtk_column_view_sorter_get_primary_sort_column (view_sorter);
sort_order = gtk_column_view_sorter_get_primary_sort_order (view_sorter);
gtk_widget_set_visible (self->sort, TRUE);
gtk_widget_remove_css_class (self->sort, "ascending");
gtk_widget_remove_css_class (self->sort, "descending");
gtk_widget_remove_css_class (self->sort, "unsorted");
if (self->column != primary)
gtk_widget_add_css_class (self->sort, "unsorted");
else if (sort_order == GTK_SORT_DESCENDING)
gtk_widget_add_css_class (self->sort, "descending");
else
gtk_widget_add_css_class (self->sort, "ascending");
}
else
gtk_widget_set_visible (self->sort, FALSE);
}
GtkColumnViewColumn *
gtk_column_view_title_get_column (GtkColumnViewTitle *self)
{
return self->column;
}
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