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gtk2/gtk/gtkcolumnview.c
Matthias Clasen f631e0e1e0 columnview: Update column positions on reordering 
Tell reordered columns to reorder their cells to
the new position. This is necessary to get things
like separators right. The visible symptom of this
problem was the lack of the right border when the
last column is reorder to another position, since
the title widget was still the last in its container,
so :last-child applied.
2020-06-05 13:28:44 -04:00

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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 "gtkcolumnviewprivate.h"
#include "gtkboxlayout.h"
#include "gtkbuildable.h"
#include "gtkcolumnlistitemfactoryprivate.h"
#include "gtkcolumnviewcolumnprivate.h"
#include "gtkcolumnviewlayoutprivate.h"
#include "gtkcolumnviewsorterprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkintl.h"
#include "gtklistview.h"
#include "gtkmain.h"
#include "gtkprivate.h"
#include "gtkscrollable.h"
#include "gtkwidgetprivate.h"
#include "gtksizerequest.h"
#include "gtkadjustment.h"
#include "gtkgesturedrag.h"
#include "gtkeventcontrollermotion.h"
#include "gtkdragsource.h"
#include "gtkeventcontrollerkey.h"
/**
* SECTION:gtkcolumnview
* @title: GtkColumnView
* @short_description: A widget for displaying lists in multiple columns
* @see_also: #GtkColumnViewColumn, #GtkTreeView
*
* GtkColumnView is a widget to present a view into a large dynamic list of items
* using multiple columns with headers.
*
* GtkColumnView uses the factories of its columns to generate a cell widget for
* each column, for each visible item and displays them together as the row for
* this item. The #GtkColumnView:show-row-separators and
* #GtkColumnView:show-column-separators properties offer a simple way to display
* separators between the rows or columns.
*
* GtkColumnView allows the user to select items according to the selection
* characteristics of the model. If the provided model is not a #GtkSelectionModel,
* GtkColumnView will wrap it in a #GtkSingleSelection. For models that allow
* multiple selected items, it is possible to turn on _rubberband selection_,
* using #GtkColumnView:enable-rubberband.
*
* The column view supports sorting that can be customized by the user by
* clicking on column headers. To set this up, the #GtkSorter returned by
* gtk_column_view_get_sorter() must be attached to a sort model for the data
* that the view is showing, and the columns must have sorters attached to them
* by calling gtk_column_view_column_set_sorter(). The initial sort order can be
* set with gtk_column_view_sort_by_column().
*
* The column view also supports interactive resizing and reordering of
* columns, via Drag-and-Drop of the column headers. This can be enabled or
* disabled with the #GtkColumnView:reorderable and #GtkColumnViewColumn:resizable
* properties.
*
* To learn more about the list widget framework, see the [overview](#ListWidget).
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* columnview[.column-separators]
* ├── header
* │ ├── <column header>
* ┊ ┊
* │ ╰── <column header>
* │
* ├── listview
* │
* ┊
* ╰── [rubberband]
* ]|
*
* GtkColumnView uses a single CSS node named columnview. It may carry the
* .column-separators style class, when #GtkColumnView:show-column-separators
* property is set. Header widets appear below a node with name header.
* The rows are contained in a GtkListView widget, so there is a listview
* node with the same structure as for a standalone GtkListView widget. If
* #GtkColumnView:show-row-separators is set, it will be passed on to the
* list view, causing its CSS node to carry the .separators style class.
* For rubberband selection, a node with name rubberband is used.
*/
struct _GtkColumnView
{
GtkWidget parent_instance;
GListStore *columns;
GtkWidget *header;
GtkListView *listview;
GtkColumnListItemFactory *factory;
GtkSorter *sorter;
GtkAdjustment *hadjustment;
gboolean reorderable;
gboolean show_column_separators;
gboolean in_column_resize;
gboolean in_column_reorder;
int drag_pos;
int drag_x;
int drag_offset;
int drag_column_x;
GtkGesture *drag_gesture;
guint autoscroll_id;
double autoscroll_x;
double autoscroll_delta;
};
struct _GtkColumnViewClass
{
GtkWidgetClass parent_class;
};
enum
{
PROP_0,
PROP_COLUMNS,
PROP_HADJUSTMENT,
PROP_HSCROLL_POLICY,
PROP_MODEL,
PROP_SHOW_ROW_SEPARATORS,
PROP_SHOW_COLUMN_SEPARATORS,
PROP_SORTER,
PROP_VADJUSTMENT,
PROP_VSCROLL_POLICY,
PROP_SINGLE_CLICK_ACTIVATE,
PROP_REORDERABLE,
PROP_ENABLE_RUBBERBAND,
N_PROPS
};
enum {
ACTIVATE,
LAST_SIGNAL
};
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_column_view_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (GTK_IS_COLUMN_VIEW_COLUMN (child))
{
if (type != NULL)
{
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type);
}
else
{
gtk_column_view_append_column (GTK_COLUMN_VIEW (buildable),
GTK_COLUMN_VIEW_COLUMN (child));
}
}
else
{
parent_buildable_iface->add_child (buildable, builder, child, type);
}
}
static void
gtk_column_view_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_column_view_buildable_add_child;
}
G_DEFINE_TYPE_WITH_CODE (GtkColumnView, gtk_column_view, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE, gtk_column_view_buildable_interface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static GParamSpec *properties[N_PROPS] = { NULL, };
static guint signals[LAST_SIGNAL] = { 0 };
static void
gtk_column_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkColumnView *self = GTK_COLUMN_VIEW (widget);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_column_view_measure_across (self, minimum, natural);
}
else
{
int header_min, header_nat, list_min, list_nat;
gtk_widget_measure (GTK_WIDGET (self->listview),
orientation, for_size,
&header_min, &header_nat,
NULL, NULL);
gtk_widget_measure (GTK_WIDGET (self->listview),
orientation, for_size,
&list_min, &list_nat,
NULL, NULL);
*minimum = header_min + list_min;
*natural = header_nat + list_nat;
}
}
void
gtk_column_view_distribute_width (GtkColumnView *self,
int width,
GtkRequestedSize *sizes)
{
GtkScrollablePolicy scroll_policy;
int col_min, col_nat, extra, col_size;
int n, n_expand, expand_size, n_extra;
guint i;
n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
n_expand = 0;
for (i = 0; i < n; i++)
{
GtkColumnViewColumn *column;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (gtk_column_view_column_get_visible (column))
{
gtk_column_view_column_measure (column, &sizes[i].minimum_size, &sizes[i].natural_size);
if (gtk_column_view_column_get_expand (column))
n_expand++;
}
else
sizes[i].minimum_size = sizes[i].natural_size = 0;
g_object_unref (column);
}
gtk_column_view_measure_across (self, &col_min, &col_nat);
scroll_policy = gtk_scrollable_get_hscroll_policy (GTK_SCROLLABLE (self->listview));
if (scroll_policy == GTK_SCROLL_MINIMUM)
extra = MAX (width - col_min, 0);
else
extra = MAX (width - col_min, col_nat - col_min);
extra = gtk_distribute_natural_allocation (extra, n, sizes);
if (n_expand > 0)
{
expand_size = extra / n_expand;
n_extra = extra % n_expand;
}
else
expand_size = n_extra = 0;
for (i = 0; i < n; i++)
{
GtkColumnViewColumn *column;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (gtk_column_view_column_get_visible (column))
{
col_size = sizes[i].minimum_size;
if (gtk_column_view_column_get_expand (column))
{
col_size += expand_size;
if (n_extra > 0)
{
col_size++;
n_extra--;
}
}
sizes[i].minimum_size = col_size;
}
g_object_unref (column);
}
}
static int
gtk_column_view_allocate_columns (GtkColumnView *self,
int width)
{
guint i, n;
int x;
GtkRequestedSize *sizes;
n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
sizes = g_newa (GtkRequestedSize, n);
gtk_column_view_distribute_width (self, width, sizes);
x = 0;
for (i = 0; i < n; i++)
{
GtkColumnViewColumn *column;
int col_size;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (gtk_column_view_column_get_visible (column))
{
col_size = sizes[i].minimum_size;
gtk_column_view_column_allocate (column, x, col_size);
if (self->in_column_reorder && i == self->drag_pos)
gtk_column_view_column_set_header_position (column, self->drag_x);
x += col_size;
}
g_object_unref (column);
}
return x;
}
static void
gtk_column_view_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkColumnView *self = GTK_COLUMN_VIEW (widget);
int full_width, header_height, min, nat, x;
x = gtk_adjustment_get_value (self->hadjustment);
full_width = gtk_column_view_allocate_columns (self, width);
gtk_widget_measure (self->header, GTK_ORIENTATION_VERTICAL, full_width, &min, &nat, NULL, NULL);
if (gtk_scrollable_get_vscroll_policy (GTK_SCROLLABLE (self->listview)) == GTK_SCROLL_MINIMUM)
header_height = min;
else
header_height = nat;
gtk_widget_allocate (self->header, full_width, header_height, -1,
gsk_transform_translate (NULL, &GRAPHENE_POINT_INIT (-x, 0)));
gtk_widget_allocate (GTK_WIDGET (self->listview),
full_width, height - header_height, -1,
gsk_transform_translate (NULL, &GRAPHENE_POINT_INIT (-x, header_height)));
gtk_adjustment_configure (self->hadjustment, x, 0, full_width, width * 0.1, width * 0.9, width);
}
static void
gtk_column_view_activate_cb (GtkListView *listview,
guint pos,
GtkColumnView *self)
{
g_signal_emit (self, signals[ACTIVATE], 0, pos);
}
static void
adjustment_value_changed_cb (GtkAdjustment *adjustment,
GtkColumnView *self)
{
gtk_widget_queue_allocate (GTK_WIDGET (self));
}
static void
clear_adjustment (GtkColumnView *self)
{
if (self->hadjustment == NULL)
return;
g_signal_handlers_disconnect_by_func (self->hadjustment, adjustment_value_changed_cb, self);
g_clear_object (&self->hadjustment);
}
static void
gtk_column_view_dispose (GObject *object)
{
GtkColumnView *self = GTK_COLUMN_VIEW (object);
while (g_list_model_get_n_items (G_LIST_MODEL (self->columns)) > 0)
{
GtkColumnViewColumn *column = g_list_model_get_item (G_LIST_MODEL (self->columns), 0);
gtk_column_view_remove_column (self, column);
g_object_unref (column);
}
g_clear_pointer (&self->header, gtk_widget_unparent);
g_clear_pointer ((GtkWidget **) &self->listview, gtk_widget_unparent);
g_clear_object (&self->factory);
g_clear_object (&self->sorter);
clear_adjustment (self);
G_OBJECT_CLASS (gtk_column_view_parent_class)->dispose (object);
}
static void
gtk_column_view_finalize (GObject *object)
{
GtkColumnView *self = GTK_COLUMN_VIEW (object);
g_object_unref (self->columns);
G_OBJECT_CLASS (gtk_column_view_parent_class)->finalize (object);
}
static void
gtk_column_view_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkColumnView *self = GTK_COLUMN_VIEW (object);
switch (property_id)
{
case PROP_COLUMNS:
g_value_set_object (value, self->columns);
break;
case PROP_HADJUSTMENT:
g_value_set_object (value, self->hadjustment);
break;
case PROP_HSCROLL_POLICY:
g_value_set_enum (value, gtk_scrollable_get_hscroll_policy (GTK_SCROLLABLE (self->listview)));
break;
case PROP_MODEL:
g_value_set_object (value, gtk_list_view_get_model (self->listview));
break;
case PROP_SHOW_ROW_SEPARATORS:
g_value_set_boolean (value, gtk_list_view_get_show_separators (self->listview));
break;
case PROP_SHOW_COLUMN_SEPARATORS:
g_value_set_boolean (value, self->show_column_separators);
break;
case PROP_VADJUSTMENT:
g_value_set_object (value, gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (self->listview)));
break;
case PROP_VSCROLL_POLICY:
g_value_set_enum (value, gtk_scrollable_get_vscroll_policy (GTK_SCROLLABLE (self->listview)));
break;
case PROP_SORTER:
g_value_set_object (value, self->sorter);
break;
case PROP_SINGLE_CLICK_ACTIVATE:
g_value_set_boolean (value, gtk_column_view_get_single_click_activate (self));
break;
case PROP_REORDERABLE:
g_value_set_boolean (value, gtk_column_view_get_reorderable (self));
break;
case PROP_ENABLE_RUBBERBAND:
g_value_set_boolean (value, gtk_column_view_get_enable_rubberband (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_column_view_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkColumnView *self = GTK_COLUMN_VIEW (object);
GtkAdjustment *adjustment;
switch (property_id)
{
case PROP_HADJUSTMENT:
adjustment = g_value_get_object (value);
if (adjustment == NULL)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
g_object_ref_sink (adjustment);
if (self->hadjustment != adjustment)
{
clear_adjustment (self);
self->hadjustment = adjustment;
g_signal_connect (adjustment, "value-changed", G_CALLBACK (adjustment_value_changed_cb), self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_HADJUSTMENT]);
}
break;
case PROP_HSCROLL_POLICY:
if (gtk_scrollable_get_hscroll_policy (GTK_SCROLLABLE (self->listview)) != g_value_get_enum (value))
{
gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (self->listview), g_value_get_enum (value));
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_HSCROLL_POLICY]);
}
break;
case PROP_MODEL:
gtk_column_view_set_model (self, g_value_get_object (value));
break;
case PROP_SHOW_ROW_SEPARATORS:
gtk_column_view_set_show_row_separators (self, g_value_get_boolean (value));
break;
case PROP_SHOW_COLUMN_SEPARATORS:
gtk_column_view_set_show_column_separators (self, g_value_get_boolean (value));
break;
case PROP_VADJUSTMENT:
if (gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (self->listview)) != g_value_get_object (value))
{
gtk_scrollable_set_vadjustment (GTK_SCROLLABLE (self->listview), g_value_get_object (value));
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_VADJUSTMENT]);
}
break;
case PROP_VSCROLL_POLICY:
if (gtk_scrollable_get_vscroll_policy (GTK_SCROLLABLE (self->listview)) != g_value_get_enum (value))
{
gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (self->listview), g_value_get_enum (value));
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_VSCROLL_POLICY]);
}
break;
case PROP_SINGLE_CLICK_ACTIVATE:
gtk_column_view_set_single_click_activate (self, g_value_get_boolean (value));
break;
case PROP_REORDERABLE:
gtk_column_view_set_reorderable (self, g_value_get_boolean (value));
break;
case PROP_ENABLE_RUBBERBAND:
gtk_column_view_set_enable_rubberband (self, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_column_view_class_init (GtkColumnViewClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gpointer iface;
widget_class->measure = gtk_column_view_measure;
widget_class->size_allocate = gtk_column_view_allocate;
gobject_class->dispose = gtk_column_view_dispose;
gobject_class->finalize = gtk_column_view_finalize;
gobject_class->get_property = gtk_column_view_get_property;
gobject_class->set_property = gtk_column_view_set_property;
/* GtkScrollable implementation */
iface = g_type_default_interface_peek (GTK_TYPE_SCROLLABLE);
properties[PROP_HADJUSTMENT] =
g_param_spec_override ("hadjustment",
g_object_interface_find_property (iface, "hadjustment"));
properties[PROP_HSCROLL_POLICY] =
g_param_spec_override ("hscroll-policy",
g_object_interface_find_property (iface, "hscroll-policy"));
properties[PROP_VADJUSTMENT] =
g_param_spec_override ("vadjustment",
g_object_interface_find_property (iface, "vadjustment"));
properties[PROP_VSCROLL_POLICY] =
g_param_spec_override ("vscroll-policy",
g_object_interface_find_property (iface, "vscroll-policy"));
/**
* GtkColumnView:columns:
*
* The list of columns
*/
properties[PROP_COLUMNS] =
g_param_spec_object ("columns",
P_("Columns"),
P_("List of columns"),
G_TYPE_LIST_MODEL,
G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkColumnView:model:
*
* Model for the items displayed
*/
properties[PROP_MODEL] =
g_param_spec_object ("model",
P_("Model"),
P_("Model for the items displayed"),
G_TYPE_LIST_MODEL,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkColumnView:show-row-separators:
*
* Show separators between rows
*/
properties[PROP_SHOW_ROW_SEPARATORS] =
g_param_spec_boolean ("show-row-separators",
P_("Show row separators"),
P_("Show separators between rows"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkColumnView:show-column-separators:
*
* Show separators between columns
*/
properties[PROP_SHOW_COLUMN_SEPARATORS] =
g_param_spec_boolean ("show-column-separators",
P_("Show column separators"),
P_("Show separators between columns"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkColumnView:sorter:
*
* Sorter with the sorting choices of the user
*/
properties[PROP_SORTER] =
g_param_spec_object ("sorter",
P_("Sorter"),
P_("Sorter with sorting choices of the user"),
GTK_TYPE_SORTER,
G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkColumnView:single-click-activate:
*
* Activate rows on single click and select them on hover
*/
properties[PROP_SINGLE_CLICK_ACTIVATE] =
g_param_spec_boolean ("single-click-activate",
P_("Single click activate"),
P_("Activate rows on single click"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkColumnView:reorderable:
*
* Whether columns are reorderable
*/
properties[PROP_REORDERABLE] =
g_param_spec_boolean ("reorderable",
P_("Reorderable"),
P_("Whether columns are reorderable"),
TRUE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkColumnView:enable-rubberband:
*
* Allow rubberband selection
*/
properties[PROP_ENABLE_RUBBERBAND] =
g_param_spec_boolean ("enable-rubberband",
P_("Enable rubberband selection"),
P_("Allow selecting items by dragging with the mouse"),
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, N_PROPS, properties);
/**
* GtkColumnView::activate:
* @self: The #GtkColumnView
* @position: position of item to activate
*
* The ::activate signal is emitted when a row has been activated by the user,
* usually via activating the GtkListBase|list.activate-item action.
*
* This allows for a convenient way to handle activation in a columnview.
* See gtk_list_item_set_activatable() for details on how to use this signal.
*/
signals[ACTIVATE] =
g_signal_new (I_("activate"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__UINT,
G_TYPE_NONE, 1,
G_TYPE_UINT);
g_signal_set_va_marshaller (signals[ACTIVATE],
G_TYPE_FROM_CLASS (gobject_class),
g_cclosure_marshal_VOID__UINTv);
gtk_widget_class_set_css_name (widget_class, I_("columnview"));
}
static void update_column_resize (GtkColumnView *self,
double x);
static void update_column_reorder (GtkColumnView *self,
double x);
static gboolean
autoscroll_cb (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer data)
{
GtkColumnView *self = data;
gtk_adjustment_set_value (self->hadjustment,
gtk_adjustment_get_value (self->hadjustment) + self->autoscroll_delta);
self->autoscroll_x += self->autoscroll_delta;
if (self->in_column_resize)
update_column_resize (self, self->autoscroll_x);
else if (self->in_column_reorder)
update_column_reorder (self, self->autoscroll_x);
return G_SOURCE_CONTINUE;
}
static void
add_autoscroll (GtkColumnView *self,
double x,
double delta)
{
self->autoscroll_x = x;
self->autoscroll_delta = delta;
if (self->autoscroll_id == 0)
self->autoscroll_id = gtk_widget_add_tick_callback (GTK_WIDGET (self), autoscroll_cb, self, NULL);
}
static void
remove_autoscroll (GtkColumnView *self)
{
if (self->autoscroll_id != 0)
{
gtk_widget_remove_tick_callback (GTK_WIDGET (self), self->autoscroll_id);
self->autoscroll_id = 0;
}
}
#define DRAG_WIDTH 6
static gboolean
gtk_column_view_in_resize_rect (GtkColumnView *self,
GtkColumnViewColumn *column,
double x,
double y)
{
GtkWidget *header;
graphene_rect_t rect;
header = gtk_column_view_column_get_header (column);
if (!gtk_widget_compute_bounds (header, self->header, &rect))
return FALSE;
rect.origin.x += rect.size.width - DRAG_WIDTH / 2;
rect.size.width = DRAG_WIDTH;
return graphene_rect_contains_point (&rect, &(graphene_point_t) { x, y});
}
static gboolean
gtk_column_view_in_header (GtkColumnView *self,
GtkColumnViewColumn *column,
double x,
double y)
{
GtkWidget *header;
graphene_rect_t rect;
header = gtk_column_view_column_get_header (column);
if (!gtk_widget_compute_bounds (header, self->header, &rect))
return FALSE;
return graphene_rect_contains_point (&rect, &(graphene_point_t) { x, y});
}
static void
header_drag_begin (GtkGestureDrag *gesture,
double start_x,
double start_y,
GtkColumnView *self)
{
int i, n;
self->drag_pos = -1;
n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
for (i = 0; !self->in_column_resize && i < n; i++)
{
GtkColumnViewColumn *column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (!gtk_column_view_column_get_visible (column))
{
g_object_unref (column);
continue;
}
if (i + 1 < n &&
gtk_column_view_column_get_resizable (column) &&
gtk_column_view_in_resize_rect (self, column, start_x, start_y))
{
int size;
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
if (!gtk_widget_has_focus (GTK_WIDGET (self)))
gtk_widget_grab_focus (GTK_WIDGET (self));
gtk_column_view_column_get_allocation (column, NULL, &size);
gtk_column_view_column_set_fixed_width (column, size);
self->drag_pos = i;
self->drag_x = start_x - size;
self->in_column_resize = TRUE;
g_object_unref (column);
break;
}
if (gtk_column_view_get_reorderable (self) &&
gtk_column_view_in_header (self, column, start_x, start_y))
{
int pos;
gtk_column_view_column_get_allocation (column, &pos, NULL);
self->drag_pos = i;
self->drag_offset = start_x - pos;
g_object_unref (column);
break;
}
g_object_unref (column);
}
}
static void
header_drag_end (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkColumnView *self)
{
double start_x, x;
gtk_gesture_drag_get_start_point (gesture, &start_x, NULL);
x = start_x + offset_x;
remove_autoscroll (self);
if (self->in_column_resize)
{
self->in_column_resize = FALSE;
}
else if (self->in_column_reorder)
{
GdkEventSequence *sequence;
GtkColumnViewColumn *column;
GtkWidget *header;
int i;
self->in_column_reorder = FALSE;
if (self->drag_pos == -1)
return;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), self->drag_pos);
header = gtk_column_view_column_get_header (column);
gtk_style_context_remove_class (gtk_widget_get_style_context (header), "dnd");
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
if (!gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
return;
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->columns)); i++)
{
GtkColumnViewColumn *col = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (gtk_column_view_column_get_visible (col))
{
int pos, size;
gtk_column_view_column_get_allocation (col, &pos, &size);
if (pos <= x && x <= pos + size)
{
gtk_column_view_insert_column (self, i, column);
g_object_unref (col);
break;
}
}
g_object_unref (col);
}
g_object_unref (column);
}
}
static void
update_column_resize (GtkColumnView *self,
double x)
{
GtkColumnViewColumn *column;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), self->drag_pos);
gtk_column_view_column_set_fixed_width (column, MAX (x - self->drag_x, 0));
g_object_unref (column);
}
static void
update_column_reorder (GtkColumnView *self,
double x)
{
GtkColumnViewColumn *column;
int width;
int size;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), self->drag_pos);
width = gtk_widget_get_allocated_width (GTK_WIDGET (self->header));
gtk_column_view_column_get_allocation (column, NULL, &size);
self->drag_x = CLAMP (x - self->drag_offset, 0, width - size);
gtk_widget_queue_allocate (GTK_WIDGET (self));
gtk_column_view_column_queue_resize (column);
g_object_unref (column);
}
#define SCROLL_EDGE_SIZE 15
static void
header_drag_update (GtkGestureDrag *gesture,
double offset_x,
double offset_y,
GtkColumnView *self)
{
GdkEventSequence *sequence;
double start_x, x;
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
if (!gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
return;
if (self->drag_pos == -1)
return;
if (!self->in_column_resize && !self->in_column_reorder)
{
if (gtk_drag_check_threshold (GTK_WIDGET (self), 0, 0, offset_x, 0))
{
GtkColumnViewColumn *column;
GtkWidget *header;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), self->drag_pos);
header = gtk_column_view_column_get_header (column);
gtk_widget_insert_after (header, self->header, gtk_widget_get_last_child (self->header));
gtk_style_context_add_class (gtk_widget_get_style_context (header), "dnd");
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
if (!gtk_widget_has_focus (GTK_WIDGET (self)))
gtk_widget_grab_focus (GTK_WIDGET (self));
self->in_column_reorder = TRUE;
g_object_unref (column);
}
}
gtk_gesture_drag_get_start_point (gesture, &start_x, NULL);
x = start_x + offset_x;
if (self->in_column_resize)
update_column_resize (self, x);
else if (self->in_column_reorder)
update_column_reorder (self, x);
if (self->in_column_resize || self->in_column_reorder)
{
double value, page_size, upper;
value = gtk_adjustment_get_value (self->hadjustment);
page_size = gtk_adjustment_get_page_size (self->hadjustment);
upper = gtk_adjustment_get_upper (self->hadjustment);
if (x - value < SCROLL_EDGE_SIZE && value > 0)
add_autoscroll (self, x, - (SCROLL_EDGE_SIZE - (x - value))/3.0);
else if (value + page_size - x < SCROLL_EDGE_SIZE && value + page_size < upper)
add_autoscroll (self, x, (SCROLL_EDGE_SIZE - (value + page_size - x))/3.0);
else
remove_autoscroll (self);
}
}
static void
header_motion (GtkEventControllerMotion *controller,
double x,
double y,
GtkColumnView *self)
{
gboolean cursor_set = FALSE;
int i, n;
n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
for (i = 0; i < n; i++)
{
GtkColumnViewColumn *column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
if (!gtk_column_view_column_get_visible (column))
{
g_object_unref (column);
continue;
}
if (i + 1 < n &&
gtk_column_view_column_get_resizable (column) &&
gtk_column_view_in_resize_rect (self, column, x, y))
{
gtk_widget_set_cursor_from_name (self->header, "col-resize");
cursor_set = TRUE;
}
g_object_unref (column);
}
if (!cursor_set)
gtk_widget_set_cursor (self->header, NULL);
}
static gboolean
header_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType modifiers,
GtkColumnView *self)
{
if (self->in_column_reorder)
{
if (keyval == GDK_KEY_Escape)
gtk_gesture_set_state (self->drag_gesture, GTK_EVENT_SEQUENCE_DENIED);
return TRUE;
}
return FALSE;
}
static void
gtk_column_view_init (GtkColumnView *self)
{
GtkEventController *controller;
self->columns = g_list_store_new (GTK_TYPE_COLUMN_VIEW_COLUMN);
self->header = gtk_list_item_widget_new (NULL, "header");
gtk_widget_set_can_focus (self->header, FALSE);
gtk_widget_set_layout_manager (self->header, gtk_column_view_layout_new (self));
gtk_widget_set_parent (self->header, GTK_WIDGET (self));
controller = GTK_EVENT_CONTROLLER (gtk_gesture_drag_new ());
g_signal_connect (controller, "drag-begin", G_CALLBACK (header_drag_begin), self);
g_signal_connect (controller, "drag-update", G_CALLBACK (header_drag_update), self);
g_signal_connect (controller, "drag-end", G_CALLBACK (header_drag_end), self);
gtk_event_controller_set_propagation_phase (controller, GTK_PHASE_CAPTURE);
gtk_widget_add_controller (self->header, controller);
self->drag_gesture = GTK_GESTURE (controller);
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "motion", G_CALLBACK (header_motion), self);
gtk_widget_add_controller (self->header, controller);
controller = gtk_event_controller_key_new ();
g_signal_connect (controller, "key-pressed", G_CALLBACK (header_key_pressed), self);
gtk_widget_add_controller (GTK_WIDGET (self), controller);
self->sorter = gtk_column_view_sorter_new ();
self->factory = gtk_column_list_item_factory_new (self);
self->listview = GTK_LIST_VIEW (gtk_list_view_new_with_factory (
GTK_LIST_ITEM_FACTORY (g_object_ref (self->factory))));
gtk_widget_set_hexpand (GTK_WIDGET (self->listview), TRUE);
gtk_widget_set_vexpand (GTK_WIDGET (self->listview), TRUE);
g_signal_connect (self->listview, "activate", G_CALLBACK (gtk_column_view_activate_cb), self);
gtk_widget_set_parent (GTK_WIDGET (self->listview), GTK_WIDGET (self));
gtk_css_node_add_class (gtk_widget_get_css_node (GTK_WIDGET (self)),
g_quark_from_static_string (I_("view")));
gtk_widget_set_overflow (GTK_WIDGET (self), GTK_OVERFLOW_HIDDEN);
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
self->reorderable = TRUE;
}
/**
* gtk_column_view_new:
*
* Creates a new empty #GtkColumnView.
*
* You most likely want to call gtk_column_view_set_factory() to
* set up a way to map its items to widgets and gtk_column_view_set_model()
* to set a model to provide items next.
*
* Returns: a new #GtkColumnView
**/
GtkWidget *
gtk_column_view_new (void)
{
return g_object_new (GTK_TYPE_COLUMN_VIEW, NULL);
}
/**
* gtk_column_view_get_model:
* @self: a #GtkColumnView
*
* Gets the model that's currently used to read the items displayed.
*
* Returns: (nullable) (transfer none): The model in use
**/
GListModel *
gtk_column_view_get_model (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), NULL);
return gtk_list_view_get_model (self->listview);
}
/**
* gtk_column_view_set_model:
* @self: a #GtkColumnView
* @model: (allow-none) (transfer none): the model to use or %NULL for none
*
* Sets the #GListModel to use.
*
* If the @model is a #GtkSelectionModel, it is used for managing the selection.
* Otherwise, @self creates a #GtkSingleSelection for the selection.
**/
void
gtk_column_view_set_model (GtkColumnView *self,
GListModel *model)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
if (gtk_list_view_get_model (self->listview) == model)
return;
gtk_list_view_set_model (self->listview, model);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
}
/**
* gtk_column_view_get_columns:
* @self: a #GtkColumnView
*
* Gets the list of columns in this column view. This list is constant over
* the lifetime of @self and can be used to monitor changes to the columns
* of @self by connecting to the GListModel:items-changed signal.
*
* Returns: (transfer none): The list managing the columns
**/
GListModel *
gtk_column_view_get_columns (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), NULL);
return G_LIST_MODEL (self->columns);
}
/**
* gtk_column_view_set_show_row_separators:
* @self: a #GtkColumnView
* @show_row_separators: %TRUE to show row separators
*
* Sets whether the list should show separators
* between rows.
*/
void
gtk_column_view_set_show_row_separators (GtkColumnView *self,
gboolean show_row_separators)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
if (gtk_list_view_get_show_separators (self->listview) == show_row_separators)
return;
gtk_list_view_set_show_separators (self->listview, show_row_separators);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SHOW_ROW_SEPARATORS]);
}
/**
* gtk_column_view_get_show_row_separators:
* @self: a #GtkColumnView
*
* Returns whether the list should show separators
* between rows.
*
* Returns: %TRUE if the list shows separators
*/
gboolean
gtk_column_view_get_show_row_separators (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), FALSE);
return gtk_list_view_get_show_separators (self->listview);
}
/**
* gtk_column_view_set_show_column_separators:
* @self: a #GtkColumnView
* @show_column_separators: %TRUE to show column separators
*
* Sets whether the list should show separators
* between columns.
*/
void
gtk_column_view_set_show_column_separators (GtkColumnView *self,
gboolean show_column_separators)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
if (self->show_column_separators == show_column_separators)
return;
self->show_column_separators = show_column_separators;
if (show_column_separators)
gtk_widget_add_css_class (GTK_WIDGET (self), "column-separators");
else
gtk_widget_remove_css_class (GTK_WIDGET (self), "column-separators");
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SHOW_COLUMN_SEPARATORS]);
}
/**
* gtk_column_view_get_show_column_separators:
* @self: a #GtkColumnView
*
* Returns whether the list should show separators
* between columns.
*
* Returns: %TRUE if the list shows column separators
*/
gboolean
gtk_column_view_get_show_column_separators (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), FALSE);
return self->show_column_separators;
}
/**
* gtk_column_view_append_column:
* @self: a #GtkColumnView
* @column: a #GtkColumnViewColumn that hasn't been added to a
* #GtkColumnView yet
*
* Appends the @column to the end of the columns in @self.
**/
void
gtk_column_view_append_column (GtkColumnView *self,
GtkColumnViewColumn *column)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
g_return_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (column));
g_return_if_fail (gtk_column_view_column_get_column_view (column) == NULL);
gtk_column_view_column_set_column_view (column, self);
g_list_store_append (self->columns, column);
}
/**
* gtk_column_view_remove_column:
* @self: a #GtkColumnView
* @column: a #GtkColumnViewColumn that's part of @self
*
* Removes the @column from the list of columns of @self.
**/
void
gtk_column_view_remove_column (GtkColumnView *self,
GtkColumnViewColumn *column)
{
guint i;
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
g_return_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (column));
g_return_if_fail (gtk_column_view_column_get_column_view (column) == self);
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->columns)); i++)
{
GtkColumnViewColumn *item = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
g_object_unref (item);
if (item == column)
break;
}
gtk_column_view_sorter_remove_column (GTK_COLUMN_VIEW_SORTER (self->sorter), column);
gtk_column_view_column_set_column_view (column, NULL);
g_list_store_remove (self->columns, i);
}
/**
* gtk_column_view_insert_column:
* @self: a #GtkColumnView
* @position: the position to insert @column at
* @column: the #GtkColumnViewColumn to insert
*
* Inserts a column at the given position in the columns of @self.
*
* If @column is already a column of @self, it will be repositioned.
*/
void
gtk_column_view_insert_column (GtkColumnView *self,
guint position,
GtkColumnViewColumn *column)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
g_return_if_fail (GTK_IS_COLUMN_VIEW_COLUMN (column));
g_return_if_fail (gtk_column_view_column_get_column_view (column) == NULL ||
gtk_column_view_column_get_column_view (column) == self);
g_return_if_fail (position <= g_list_model_get_n_items (G_LIST_MODEL (self->columns)));
int old_position = -1;
g_object_ref (column);
if (gtk_column_view_column_get_column_view (column) == self)
{
guint i;
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->columns)); i++)
{
GtkColumnViewColumn *item = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
g_object_unref (item);
if (item == column)
{
old_position = i;
g_list_store_remove (self->columns, i);
break;
}
}
}
g_list_store_insert (self->columns, position, column);
gtk_column_view_column_set_column_view (column, self);
if (old_position != -1 && position != old_position)
gtk_column_view_column_set_position (column, position);
gtk_column_view_column_queue_resize (column);
g_object_unref (column);
}
void
gtk_column_view_measure_across (GtkColumnView *self,
int *minimum,
int *natural)
{
guint i;
int min, nat;
min = 0;
nat = 0;
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->columns)); i++)
{
GtkColumnViewColumn *column;
int col_min, col_nat;
column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
gtk_column_view_column_measure (column, &col_min, &col_nat);
min += col_min;
nat += col_nat;
g_object_unref (column);
}
*minimum = min;
*natural = nat;
}
GtkListItemWidget *
gtk_column_view_get_header_widget (GtkColumnView *self)
{
return GTK_LIST_ITEM_WIDGET (self->header);
}
GtkListView *
gtk_column_view_get_list_view (GtkColumnView *self)
{
return GTK_LIST_VIEW (self->listview);
}
/**
* gtk_column_view_get_sorter:
* @self: a #GtkColumnView
*
* Returns the sorter associated with users sorting choices in
* the column view.
*
* To allow users to customizable sorting by clicking on column
* headers, this sorter needs to be set on the sort
* model(s) underneath the model that is displayed
* by the view.
*
* See gtk_column_view_column_get_sorter() for setting up
* per-column sorting.
*
* Returns: (transfer none): the #GtkSorter of @self
*/
GtkSorter *
gtk_column_view_get_sorter (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), NULL);
return self->sorter;
}
/**
* gtk_column_view_sort_by_column:
* @self: a #GtkColumnView
* @column: (allow-none): the #GtkColumnViewColumn to sort by, or %NULL
* @direction: the direction to sort in
*
* Sets the sorting of the view.
*
* This function should be used to set up the initial sorting. At runtime,
* users can change the sorting of a column view by clicking on the list headers.
*
* This call only has an effect if the sorter returned by gtk_column_view_get_sorter()
* is set on a sort model, and gtk_column_view_column_set_sorter() has been called
* on @column to associate a sorter with the column.
*
* If @column is %NULL, the view will be unsorted.
*/
void
gtk_column_view_sort_by_column (GtkColumnView *self,
GtkColumnViewColumn *column,
GtkSortType direction)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
g_return_if_fail (column == NULL || GTK_IS_COLUMN_VIEW_COLUMN (column));
g_return_if_fail (column == NULL || gtk_column_view_column_get_column_view (column) == self);
if (column == NULL)
gtk_column_view_sorter_clear (GTK_COLUMN_VIEW_SORTER (self->sorter));
else
gtk_column_view_sorter_set_column (GTK_COLUMN_VIEW_SORTER (self->sorter),
column,
direction == GTK_SORT_DESCENDING);
}
/**
* gtk_column_view_set_single_click_activate:
* @self: a #GtkColumnView
* @single_click_activate: %TRUE to activate items on single click
*
* Sets whether rows should be activated on single click and
* selected on hover.
*/
void
gtk_column_view_set_single_click_activate (GtkColumnView *self,
gboolean single_click_activate)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
if (single_click_activate == gtk_list_view_get_single_click_activate (self->listview))
return;
gtk_list_view_set_single_click_activate (self->listview, single_click_activate);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SINGLE_CLICK_ACTIVATE]);
}
/**
* gtk_column_view_get_single_click_activate:
* @self: a #GtkColumnView
*
* Returns whether rows will be activated on single click and
* selected on hover.
*
* Returns: %TRUE if rows are activated on single click
*/
gboolean
gtk_column_view_get_single_click_activate (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), FALSE);
return gtk_list_view_get_single_click_activate (self->listview);
}
/**
* gtk_column_view_set_reorderable:
* @self: a #GtkColumnView
* @reorderable: whether columns should be reorderable
*
* Sets whether columns should be reorderable by dragging.
*/
void
gtk_column_view_set_reorderable (GtkColumnView *self,
gboolean reorderable)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
if (self->reorderable == reorderable)
return;
self->reorderable = reorderable;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_REORDERABLE]);
}
/**
* gtk_column_view_get_reorderable:
* @self: a #GtkColumnView
*
* Returns whether columns are reorderable.
*
* Returns: %TRUE if columns are reorderable
*/
gboolean
gtk_column_view_get_reorderable (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), TRUE);
return self->reorderable;
}
/**
* gtk_column_view_set_enable_rubberband:
* @self: a #GtkColumnView
* @enable_rubberband: %TRUE to enable rubberband selection
*
* Sets whether selections can be changed by dragging with the mouse.
*/
void
gtk_column_view_set_enable_rubberband (GtkColumnView *self,
gboolean enable_rubberband)
{
g_return_if_fail (GTK_IS_COLUMN_VIEW (self));
if (enable_rubberband == gtk_list_view_get_enable_rubberband (self->listview))
return;
gtk_list_view_set_enable_rubberband (self->listview, enable_rubberband);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ENABLE_RUBBERBAND]);
}
/**
* gtk_column_view_get_enable_rubberband:
* @self: a #GtkColumnView
*
* Returns whether rows can be selected by dragging with the mouse.
*
* Returns: %TRUE if rubberband selection is enabled
*/
gboolean
gtk_column_view_get_enable_rubberband (GtkColumnView *self)
{
g_return_val_if_fail (GTK_IS_COLUMN_VIEW (self), FALSE);
return gtk_list_view_get_enable_rubberband (self->listview);
}
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