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bbced9a0cf3b7e8690cfb6ff4debf46d7c47e54d
gtk3/gtk/gtkcheckbutton.c
Matthias Clasen c48f0d6f8b check button: Reinstate rtl allocation behavior 
In rtl mode, we must not just reverse the children,
but also allocate from the right. Use the newly introduced
box gadget api to achieve this.

https://bugzilla.gnome.org/show_bug.cgi?id=762945
2016-03-03 21:28:51 -05:00

552 lines
20 KiB
C
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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 "gtkcheckbutton.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_CHECKED : GTK_CSS_IMAGE_BUILTIN_CHECK_CHECKED;
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_IS_RADIO_BUTTON (widget) ? GTK_CSS_IMAGE_BUILTIN_OPTION : GTK_CSS_IMAGE_BUILTIN_CHECK;
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_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);
}
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;
/**
* GtkCheckButton:indicator-size:
*
* The size of the indicator.
*
* Deprecated: 3.20: Use CSS min-width and min-height on the indicator node.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("indicator-size",
P_("Indicator Size"),
P_("Size of check or radio indicator"),
0,
G_MAXINT,
INDICATOR_SIZE,
GTK_PARAM_READABLE|G_PARAM_DEPRECATED));
/**
* GtkCheckButton:indicator-spacing:
*
* The spacing around the indicator.
*
* Deprecated: 3.20: Use CSS margins of the indicator node,
* the value of this style property is ignored.
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("indicator-spacing",
P_("Indicator Spacing"),
P_("Spacing around check or radio indicator"),
0,
G_MAXINT,
INDICATOR_SPACING,
GTK_PARAM_READABLE|G_PARAM_DEPRECATED));
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);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (button)))
{
gtk_button_set_alignment (button, 0.0, 0.5);
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_button_set_alignment (button, 0.5, 0.5);
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"));
}
}
G_GNUC_END_IGNORE_DEPRECATIONS
}
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_builtin_icon_set_default_size_property (GTK_BUILTIN_ICON (priv->indicator_gadget), "indicator-size");
gtk_box_gadget_insert_gadget (GTK_BOX_GADGET (priv->gadget), 0, priv->indicator_gadget, FALSE, 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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