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gtk/gtk/gtkcheckbutton.c
Emmanuele Bassi 9bb816f8ee gtk: Include the appropriate headers
2016-10-17 11:10:14 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 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/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkcheckbuttonprivate.h"
#include "gtkbuttonprivate.h"
#include "gtklabel.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkrender.h"
#include "gtkwidgetprivate.h"
#include "gtkbuiltiniconprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkboxgadgetprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkradiobutton.h"
/**
* SECTION:gtkcheckbutton
* @Short_description: Create widgets with a discrete toggle button
* @Title: GtkCheckButton
* @See_also: #GtkCheckMenuItem, #GtkButton, #GtkToggleButton, #GtkRadioButton
*
* A #GtkCheckButton places a discrete #GtkToggleButton next to a widget,
* (usually a #GtkLabel). See the section on #GtkToggleButton widgets for
* more information about toggle/check buttons.
*
* The important signal ( #GtkToggleButton::toggled ) is also inherited from
* #GtkToggleButton.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* checkbutton
* ├── check
* ╰── <child>
* ]|
*
* A GtkCheckButton with indicator (see gtk_toggle_button_set_mode()) has a
* main CSS node with name checkbutton and a subnode with name check.
*
* |[<!-- language="plain" -->
* button.check
* ├── check
* ╰── <child>
* ]|
*
* A GtkCheckButton without indicator changes the name of its main node
* to button and adds a .check style class to it. The subnode is invisible
* in this case.
*/
#define INDICATOR_SIZE 16
#define INDICATOR_SPACING 2
static void gtk_check_button_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_check_button_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural);
static void gtk_check_button_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_check_button_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural);
static void gtk_check_button_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline);
static void gtk_check_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_check_button_draw (GtkWidget *widget,
cairo_t *cr);
typedef struct {
GtkCssGadget *gadget;
GtkCssGadget *indicator_gadget;
} GtkCheckButtonPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
static void
gtk_check_button_update_node_state (GtkWidget *widget)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssImageBuiltinType image_type;
GtkStateFlags state;
state = gtk_widget_get_state_flags (widget);
/* XXX: This is somewhat awkward here, but there's no better
* way to update the icon
*/
if (state & GTK_STATE_FLAG_CHECKED)
image_type = GTK_IS_RADIO_BUTTON (widget) ? GTK_CSS_IMAGE_BUILTIN_OPTION : GTK_CSS_IMAGE_BUILTIN_CHECK;
else if (state & GTK_STATE_FLAG_INCONSISTENT)
image_type = GTK_IS_RADIO_BUTTON (widget) ? GTK_CSS_IMAGE_BUILTIN_OPTION_INCONSISTENT : GTK_CSS_IMAGE_BUILTIN_CHECK_INCONSISTENT;
else
image_type = GTK_CSS_IMAGE_BUILTIN_NONE;
gtk_builtin_icon_set_image (GTK_BUILTIN_ICON (priv->indicator_gadget), image_type);
gtk_css_gadget_set_state (priv->indicator_gadget, state);
}
static void
gtk_check_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state_flags)
{
gtk_check_button_update_node_state (widget);
GTK_WIDGET_CLASS (gtk_check_button_parent_class)->state_flags_changed (widget, previous_state_flags);
}
static void
gtk_check_button_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
gtk_box_gadget_reverse_children (GTK_BOX_GADGET (priv->gadget));
gtk_box_gadget_set_allocate_reverse (GTK_BOX_GADGET (priv->gadget),
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
gtk_box_gadget_set_align_reverse (GTK_BOX_GADGET (priv->gadget),
gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
GTK_WIDGET_CLASS (gtk_check_button_parent_class)->direction_changed (widget, previous_direction);
}
static void
gtk_check_button_finalize (GObject *object)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (object));
g_clear_object (&priv->gadget);
g_clear_object (&priv->indicator_gadget);
G_OBJECT_CLASS (gtk_check_button_parent_class)->finalize (object);
}
static void
gtk_check_button_add (GtkContainer *container,
GtkWidget *widget)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (container));
int pos;
GTK_CONTAINER_CLASS (gtk_check_button_parent_class)->add (container, widget);
pos = gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL ? 0 : 1;
gtk_box_gadget_insert_widget (GTK_BOX_GADGET (priv->gadget), pos, widget);
gtk_box_gadget_set_gadget_expand (GTK_BOX_GADGET (priv->gadget), G_OBJECT (widget), TRUE);
}
static void
gtk_check_button_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (container));
gtk_box_gadget_remove_widget (GTK_BOX_GADGET (priv->gadget), widget);
GTK_CONTAINER_CLASS (gtk_check_button_parent_class)->remove (container, widget);
}
static void
gtk_check_button_class_init (GtkCheckButtonClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
object_class->finalize = gtk_check_button_finalize;
widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
widget_class->get_preferred_width_for_height = gtk_check_button_get_preferred_width_for_height;
widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
widget_class->get_preferred_height_for_width = gtk_check_button_get_preferred_height_for_width;
widget_class->get_preferred_height_and_baseline_for_width = gtk_check_button_get_preferred_height_and_baseline_for_width;
widget_class->size_allocate = gtk_check_button_size_allocate;
widget_class->draw = gtk_check_button_draw;
widget_class->state_flags_changed = gtk_check_button_state_flags_changed;
widget_class->direction_changed = gtk_check_button_direction_changed;
container_class->add = gtk_check_button_add;
container_class->remove = gtk_check_button_remove;
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_CHECK_BOX);
gtk_widget_class_set_css_name (widget_class, "checkbutton");
}
static void
draw_indicator_changed (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
GtkButton *button = GTK_BUTTON (object);
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (button));
GtkCssNode *widget_node;
GtkCssNode *indicator_node;
widget_node = gtk_widget_get_css_node (GTK_WIDGET (button));
indicator_node = gtk_css_gadget_get_node (priv->indicator_gadget);
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (button)))
{
gtk_css_node_set_visible (indicator_node, TRUE);
if (GTK_IS_RADIO_BUTTON (button))
{
gtk_css_node_remove_class (widget_node, g_quark_from_static_string ("radio"));
gtk_css_node_set_name (widget_node, I_("radiobutton"));
}
else if (GTK_IS_CHECK_BUTTON (button))
{
gtk_css_node_remove_class (widget_node, g_quark_from_static_string ("check"));
gtk_css_node_set_name (widget_node, I_("checkbutton"));
}
}
else
{
gtk_css_node_set_visible (indicator_node, FALSE);
if (GTK_IS_RADIO_BUTTON (button))
{
gtk_css_node_add_class (widget_node, g_quark_from_static_string ("radio"));
gtk_css_node_set_name (widget_node, I_("button"));
}
else if (GTK_IS_CHECK_BUTTON (button))
{
gtk_css_node_add_class (widget_node, g_quark_from_static_string ("check"));
gtk_css_node_set_name (widget_node, I_("button"));
}
}
}
static void
gtk_check_button_init (GtkCheckButton *check_button)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (check_button);
GtkCssNode *widget_node;
gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
g_signal_connect (check_button, "notify::draw-indicator", G_CALLBACK (draw_indicator_changed), NULL);
gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
gtk_style_context_remove_class (gtk_widget_get_style_context (GTK_WIDGET (check_button)), "toggle");
widget_node = gtk_widget_get_css_node (GTK_WIDGET (check_button));
priv->gadget = gtk_box_gadget_new_for_node (widget_node, GTK_WIDGET (check_button));
gtk_box_gadget_set_orientation (GTK_BOX_GADGET (priv->gadget), GTK_ORIENTATION_HORIZONTAL);
gtk_box_gadget_set_draw_focus (GTK_BOX_GADGET (priv->gadget), TRUE);
priv->indicator_gadget = gtk_builtin_icon_new ("check",
GTK_WIDGET (check_button),
priv->gadget,
NULL);
gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget), 0, priv->indicator_gadget, FALSE, GTK_ALIGN_BASELINE);
gtk_check_button_update_node_state (GTK_WIDGET (check_button));
}
/**
* gtk_check_button_new:
*
* Creates a new #GtkCheckButton.
*
* Returns: a #GtkWidget.
*/
GtkWidget*
gtk_check_button_new (void)
{
return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
}
/**
* gtk_check_button_new_with_label:
* @label: the text for the check button.
*
* Creates a new #GtkCheckButton with a #GtkLabel to the right of it.
*
* Returns: a #GtkWidget.
*/
GtkWidget*
gtk_check_button_new_with_label (const gchar *label)
{
return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
}
/**
* gtk_check_button_new_with_mnemonic:
* @label: The text of the button, with an underscore in front of the
* mnemonic character
*
* Creates a new #GtkCheckButton containing a label. The label
* will be created using gtk_label_new_with_mnemonic(), so underscores
* in @label indicate the mnemonic for the check button.
*
* Returns: a new #GtkCheckButton
*/
GtkWidget*
gtk_check_button_new_with_mnemonic (const gchar *label)
{
return g_object_new (GTK_TYPE_CHECK_BUTTON,
"label", label,
"use-underline", TRUE,
NULL);
}
static void
gtk_check_button_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_get_preferred_size (gadget,
GTK_ORIENTATION_HORIZONTAL,
height,
minimum, natural,
NULL, NULL);
}
static void
gtk_check_button_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_get_preferred_size (gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_check_button_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_get_preferred_size (gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_check_button_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_get_preferred_size (gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum, natural,
NULL, NULL);
}
static void
gtk_check_button_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_get_preferred_size (gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_check_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkButton *button = GTK_BUTTON (widget);
GtkCssGadget *gadget;
GdkRectangle clip;
PangoContext *pango_context;
PangoFontMetrics *metrics;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = button->priv->gadget;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
pango_context = gtk_widget_get_pango_context (widget);
metrics = pango_context_get_metrics (pango_context,
pango_context_get_font_description (pango_context),
pango_context_get_language (pango_context));
button->priv->baseline_align =
(double)pango_font_metrics_get_ascent (metrics) /
(pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics));
pango_font_metrics_unref (metrics);
if (gtk_widget_get_realized (widget))
{
GtkAllocation border_allocation;
gtk_css_gadget_get_border_allocation (gadget, &border_allocation, NULL);
gdk_window_move_resize (GTK_BUTTON (widget)->priv->event_window,
border_allocation.x,
border_allocation.y,
border_allocation.width,
border_allocation.height);
}
}
static gint
gtk_check_button_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
GtkCssGadget *gadget;
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (widget)))
gadget = priv->gadget;
else
gadget = GTK_BUTTON (widget)->priv->gadget;
gtk_css_gadget_draw (gadget, cr);
return FALSE;
}
GtkCssNode *
gtk_check_button_get_indicator_node (GtkCheckButton *check_button)
{
GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (check_button);
return gtk_css_gadget_get_node (priv->indicator_gadget);
}
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