[gtk+] Introduce GtkModelButton

From: Matthias Clasen <matthiasc src gnome org>
To: commits-list gnome org
Cc:
Subject: [gtk+] Introduce GtkModelButton
Date: Fri, 7 Feb 2014 20:12:01 +0000 (UTC)
commit bf9ce3ad2534d167e38689c8f4e67d0e5079c087
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 7 14:51:34 2014 -0500

    Introduce GtkModelButton
    
    Similar in spirit to GtkModelMenuItem, this private GtkButton subclass
    can connect to a GtkMenuTrackerItem and present itself as either a
    regular button, a check button, or a radio button. Activation and
    state tracking is done through the GAction that is associated with
    the menu tracker item.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=723014

 gtk/Makefile.am      |    2 +
 gtk/gtkmodelbutton.c |  604 ++++++++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkmodelbutton.h |   41 ++++
 3 files changed, 647 insertions(+), 0 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 5fd185c..3fa2353 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -498,6 +498,7 @@ gtk_private_h_sources =             \
        gtkmenutrackeritem.h    \
        gtkmnemonichash.h       \
        gtkmodelmenuitem.h      \
+       gtkmodelbutton.h        \
        gtkmodifierstyle.h      \
        gtkmodulesprivate.h     \
        gtkmountoperationprivate.h \
@@ -777,6 +778,7 @@ gtk_base_c_sources =                \
        gtkmisc.c               \
        gtkmnemonichash.c       \
        gtkmodelmenuitem.c      \
+       gtkmodelbutton.c        \
        gtkmodifierstyle.c      \
        gtkmodules.c            \
        gtkmountoperation.c     \
diff --git a/gtk/gtkmodelbutton.c b/gtk/gtkmodelbutton.c
new file mode 100644
index 0000000..0787e04
--- /dev/null
+++ b/gtk/gtkmodelbutton.c
@@ -0,0 +1,604 @@
+/*
+ * Copyright © 2014 Red Hat, Inc.
+ *
+ * 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 licence, 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/>.
+ *
+ * Author: Matthias Clasen
+ */
+
+#include "config.h"
+
+#include "gtkmodelbutton.h"
+
+#include "gtkbutton.h"
+#include "gtkbuttonprivate.h"
+#include "gtkwidgetprivate.h"
+#include "gtkmenutrackeritem.h"
+#include "gtkimage.h"
+#include "gtklabel.h"
+#include "gtkbox.h"
+#include "gtkstylecontext.h"
+#include "gtktypebuiltins.h"
+
+struct _GtkModelButton
+{
+  GtkButton parent_instance;
+  GtkWidget *box;
+  GtkWidget *image;
+  GtkWidget *label;
+  gboolean toggled;
+  gboolean has_submenu;
+  gboolean center;
+  gboolean inverted;
+  GtkMenuTrackerItemRole role;
+};
+
+typedef GtkButtonClass GtkModelButtonClass;
+
+G_DEFINE_TYPE (GtkModelButton, gtk_model_button, GTK_TYPE_BUTTON)
+
+enum
+{
+  PROP_0,
+  PROP_ACTION_ROLE,
+  PROP_ICON,
+  PROP_TEXT,
+  PROP_TOGGLED,
+  PROP_ACCEL,
+  PROP_HAS_SUBMENU,
+  PROP_INVERTED,
+  PROP_CENTERED
+};
+
+static void
+gtk_model_button_set_action_role (GtkModelButton         *button,
+                                  GtkMenuTrackerItemRole  role)
+{
+  AtkObject *accessible;
+  AtkRole a11y_role;
+
+  if (role == button->role)
+    return;
+
+  button->role = role;
+  gtk_widget_queue_draw (GTK_WIDGET (button));
+
+  accessible = gtk_widget_get_accessible (GTK_WIDGET (button));
+  switch (role)
+    {
+    case GTK_MENU_TRACKER_ITEM_ROLE_NORMAL:
+      a11y_role = ATK_ROLE_PUSH_BUTTON;
+      break;
+
+    case GTK_MENU_TRACKER_ITEM_ROLE_CHECK:
+      a11y_role = ATK_ROLE_CHECK_BOX;
+      break;
+
+    case GTK_MENU_TRACKER_ITEM_ROLE_RADIO:
+      a11y_role = ATK_ROLE_RADIO_BUTTON;
+      break;
+
+    default:
+      g_assert_not_reached ();
+    }
+
+  atk_object_set_role (accessible, a11y_role);
+}
+
+static void
+gtk_model_button_set_icon (GtkModelButton *button,
+                           GIcon          *icon)
+{
+  gtk_image_set_from_gicon (GTK_IMAGE (button->image), icon, GTK_ICON_SIZE_MENU);
+  gtk_widget_set_visible (button->image, icon != NULL);
+}
+
+static void
+gtk_model_button_set_text (GtkModelButton *button,
+                           const gchar    *text)
+{
+  if (text != NULL)
+    gtk_label_set_text_with_mnemonic (GTK_LABEL (button->label), text);
+  gtk_widget_set_visible (button->label, text != NULL);
+}
+
+static void
+gtk_model_button_set_accel (GtkModelButton *button,
+                            const gchar    *accel)
+{
+  /* ignore */
+}
+
+static void
+gtk_model_button_set_toggled (GtkModelButton *button,
+                              gboolean        toggled)
+{
+  button->toggled = toggled;
+  gtk_widget_queue_draw (GTK_WIDGET (button));
+}
+
+static void
+gtk_model_button_set_has_submenu (GtkModelButton *button,
+                                  gboolean        has_submenu)
+{
+  button->has_submenu = has_submenu;
+  gtk_widget_queue_resize (GTK_WIDGET (button));
+}
+
+static void
+gtk_model_button_set_inverted (GtkModelButton *button,
+                               gboolean        inverted)
+{
+  button->inverted = inverted;
+  gtk_widget_queue_resize (GTK_WIDGET (button));
+}
+
+static void
+gtk_model_button_set_centered (GtkModelButton *button,
+                               gboolean        center)
+{
+  button->center = center;
+  gtk_widget_set_halign (button->box, button->center ? GTK_ALIGN_CENTER : GTK_ALIGN_FILL);
+  gtk_widget_queue_draw (GTK_WIDGET (button));
+}
+
+static void
+gtk_model_button_set_property (GObject      *object,
+                               guint         prop_id,
+                               const GValue *value,
+                               GParamSpec   *pspec)
+{
+  GtkModelButton *button = GTK_MODEL_BUTTON (object);
+
+  switch (prop_id)
+    {
+    case PROP_ACTION_ROLE:
+      gtk_model_button_set_action_role (button, g_value_get_enum (value));
+      break;
+
+    case PROP_ICON:
+      gtk_model_button_set_icon (button, g_value_get_object (value));
+      break;
+
+    case PROP_TEXT:
+      gtk_model_button_set_text (button, g_value_get_string (value));
+      break;
+
+    case PROP_TOGGLED:
+      gtk_model_button_set_toggled (button, g_value_get_boolean (value));
+      break;
+
+    case PROP_ACCEL:
+      gtk_model_button_set_accel (button, g_value_get_string (value));
+      break;
+
+    case PROP_HAS_SUBMENU:
+      gtk_model_button_set_has_submenu (button, g_value_get_boolean (value));
+      break;
+
+    case PROP_INVERTED:
+      gtk_model_button_set_inverted (button, g_value_get_boolean (value));
+      break;
+
+    case PROP_CENTERED:
+      gtk_model_button_set_centered (button, g_value_get_boolean (value));
+      break;
+
+    default:
+      g_assert_not_reached ();
+    }
+}
+
+static void
+gtk_model_button_get_full_border (GtkModelButton *button,
+                                  GtkBorder      *border,
+                                  gint           *indicator)
+{
+  gint focus_width, focus_pad;
+  gint indicator_size, indicator_spacing;
+  gint border_width;
+
+  border_width = gtk_container_get_border_width (GTK_CONTAINER (button));
+  gtk_widget_style_get (GTK_WIDGET (button),
+                        "focus-line-width", &focus_width,
+                        "focus-padding", &focus_pad,
+                        NULL);
+
+  gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &indicator_size, NULL);
+  indicator_spacing = indicator_size / 8;
+
+  border->left = border_width + focus_width + focus_pad;
+  border->right = border_width + focus_width + focus_pad;
+  border->top = border_width + focus_width + focus_pad;
+  border->bottom = border_width + focus_width + focus_pad;
+
+  *indicator = indicator_size + 2 * indicator_spacing;
+}
+
+static void
+gtk_model_button_get_preferred_width_for_height (GtkWidget *widget,
+                                                 gint       height,
+                                                 gint      *minimum,
+                                                 gint      *natural)
+{
+  GtkModelButton *button = GTK_MODEL_BUTTON (widget);
+  GtkWidget *child;
+  GtkBorder border;
+  gint indicator;
+
+  gtk_model_button_get_full_border (button, &border, &indicator);
+
+  child = gtk_bin_get_child (GTK_BIN (widget));
+  if (child && gtk_widget_get_visible (child))
+    {
+      if (height > -1)
+        height -= border.top + border.bottom;
+
+      _gtk_widget_get_preferred_size_for_size (child,
+                                               GTK_ORIENTATION_HORIZONTAL,
+                                               height,
+                                               minimum, natural,
+                                               NULL, NULL);
+    }
+  else
+    {
+      *minimum = 0;
+      *natural = 0;
+    }
+
+  *minimum += border.left + border.right + indicator + (button->center ? indicator : 0);
+  *natural += border.left + border.right + indicator + (button->center ? indicator : 0);
+}
+
+static void
+gtk_model_button_get_preferred_width (GtkWidget *widget,
+                                      gint      *minimum,
+                                      gint      *natural)
+{
+  gtk_model_button_get_preferred_width_for_height (widget, -1, minimum, natural);
+}
+
+static void
+gtk_model_button_get_preferred_height_and_baseline_for_width (GtkWidget          *widget,
+                                                              gint                width,
+                                                              gint               *minimum,
+                                                              gint               *natural,
+                                                              gint               *minimum_baseline,
+                                                              gint               *natural_baseline)
+{
+  GtkModelButton *button = GTK_MODEL_BUTTON (widget);
+  GtkWidget *child;
+  GtkBorder border;
+  gint indicator;
+
+  gtk_model_button_get_full_border (button, &border, &indicator);
+
+  child = gtk_bin_get_child (GTK_BIN (widget));
+  if (child && gtk_widget_get_visible (child))
+    {
+      gint child_min, child_nat;
+      gint child_min_baseline = -1, child_nat_baseline = -1;
+
+      if (width > -1)
+        width -= border.left + border.right + indicator + (button->center ? indicator : 0);
+
+        gtk_widget_get_preferred_height_and_baseline_for_width (child, width,
+                                                                &child_min, &child_nat,
+                                                                &child_min_baseline, &child_nat_baseline);
+
+        *minimum = MAX (indicator + (button->center ? indicator : 0), child_min);
+        *natural = MAX (indicator + (button->center ? indicator : 0), child_nat);
+
+        if (minimum_baseline && child_min_baseline >= 0)
+          *minimum_baseline = child_min_baseline + border.top + (*minimum - child_min) / 2;
+        if (natural_baseline && child_nat_baseline >= 0)
+          *natural_baseline = child_nat_baseline + border.top + (*natural - child_nat) / 2;
+    }
+  else
+    {
+      *minimum = indicator + (button->center ? indicator : 0);
+      *natural = indicator + (button->center ? indicator : 0);
+    }
+
+  *minimum += border.top + border.bottom;
+  *natural += border.top + border.bottom;
+}
+
+static void
+gtk_model_button_get_preferred_height_for_width (GtkWidget *widget,
+                                                 gint       width,
+                                                 gint      *minimum,
+                                                 gint      *natural)
+{
+  gtk_model_button_get_preferred_height_and_baseline_for_width (widget, width,
+                                                                minimum, natural,
+                                                                NULL, NULL);
+}
+
+static void
+gtk_model_button_get_preferred_height (GtkWidget *widget,
+                                       gint      *minimum,
+                                       gint      *natural)
+{
+  gtk_model_button_get_preferred_height_and_baseline_for_width (widget, -1,
+                                                                minimum, natural,
+                                                                NULL, NULL);
+}
+
+static gboolean
+indicator_is_left (GtkWidget *widget)
+{
+  GtkModelButton *button = GTK_MODEL_BUTTON (widget);
+
+  return ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL && !button->inverted) ||
+          (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR && button->inverted));
+   
+}
+
+static void
+gtk_model_button_size_allocate (GtkWidget     *widget,
+                                GtkAllocation *allocation)
+{
+  GtkModelButton *button = GTK_MODEL_BUTTON (widget);
+  PangoContext *pango_context;
+  PangoFontMetrics *metrics;
+  GtkAllocation child_allocation;
+  gint baseline;
+  GtkWidget *child;
+
+  gtk_widget_set_allocation (widget, allocation);
+
+  if (gtk_widget_get_realized (widget))
+    gdk_window_move_resize (gtk_button_get_event_window (GTK_BUTTON (widget)),
+                            allocation->x, allocation->y,
+                            allocation->width, allocation->height);
+
+  child = gtk_bin_get_child (GTK_BIN (widget));
+  if (child && gtk_widget_get_visible (child))
+    {
+      GtkBorder border;
+      gint indicator;
+          
+      gtk_model_button_get_full_border (button, &border, &indicator);
+
+      if (button->center)
+        {
+          border.left += indicator;
+          border.right += indicator;
+        }
+      else if (indicator_is_left (widget))
+        border.left += indicator;
+      else
+        border.right += indicator;
+      child_allocation.x = allocation->x + border.left;
+      child_allocation.y = allocation->y + border.top;
+      child_allocation.width = allocation->width - border.left - border.right;
+      child_allocation.height = allocation->height - border.top - border.bottom;
+
+      baseline = gtk_widget_get_allocated_baseline (widget);
+      if (baseline != -1)
+        baseline -= border.top;
+      gtk_widget_size_allocate_with_baseline (child, &child_allocation, baseline);
+    }
+
+  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));
+  GTK_BUTTON (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);
+}
+
+static GtkStateFlags
+get_button_state (GtkModelButton *model_button)
+{
+  GtkButton *button = GTK_BUTTON (model_button);
+  GtkStateFlags state;
+
+  state = gtk_widget_get_state_flags (GTK_WIDGET (model_button));
+
+  state &= ~(GTK_STATE_FLAG_INCONSISTENT |
+             GTK_STATE_FLAG_ACTIVE |
+             GTK_STATE_FLAG_SELECTED |
+             GTK_STATE_FLAG_PRELIGHT);
+
+  if (model_button->toggled ||
+      (button->priv->button_down && button->priv->in_button))
+    state |= GTK_STATE_FLAG_ACTIVE;
+
+  if (button->priv->activate_timeout ||
+      (button->priv->button_down && button->priv->in_button))
+    state |= GTK_STATE_FLAG_SELECTED;
+
+  if (button->priv->in_button)
+    state |= GTK_STATE_FLAG_PRELIGHT;
+
+  if (model_button->has_submenu)
+    state &= ~GTK_STATE_FLAG_ACTIVE;
+
+  return state;
+}
+
+static gint
+gtk_model_button_draw (GtkWidget *widget,
+                       cairo_t   *cr)
+{
+  GtkModelButton *model_button = GTK_MODEL_BUTTON (widget);
+  GtkButton *button = GTK_BUTTON (widget);
+  GtkWidget *child;
+  GtkStyleContext *context;
+  GtkStateFlags state;
+  gint border_width;
+  gint x, y;
+  gint width, height;
+  gint indicator_size, indicator_spacing;
+  gint focus_width, focus_pad;
+  gint baseline;
+
+  width = gtk_widget_get_allocated_width (widget);
+  height = gtk_widget_get_allocated_height (widget);
+  border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
+  context = gtk_widget_get_style_context (widget);
+  baseline = gtk_widget_get_allocated_baseline (widget);
+  state = get_button_state (model_button);
+
+  gtk_widget_style_get (widget, 
+                        "focus-line-width", &focus_width, 
+                        "focus-padding", &focus_pad, 
+                        NULL);
+
+  gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &indicator_size, NULL);
+  indicator_spacing = indicator_size / 8;
+
+  x = width - border_width -focus_width - focus_pad - indicator_spacing - indicator_size;
+
+  if (indicator_is_left (widget))
+    x = width - (indicator_size + x);
+
+  if (baseline == -1)
+    y = (height - indicator_size) / 2;
+  else
+    y = CLAMP (baseline - indicator_size * button->priv->baseline_align,
+               0, height - indicator_size);
+
+  gtk_style_context_save (context);
+  gtk_style_context_set_state (context, state);
+
+  gtk_render_background (context, cr,
+                         border_width, border_width,
+                         width - 2 * border_width,
+                         height - 2 * border_width);
+  gtk_render_frame (context, cr,
+                    border_width, border_width,
+                    width - 2 * border_width,
+                    height - 2 * border_width);
+
+  if (model_button->has_submenu)
+    {
+      state = state & ~(GTK_STATE_FLAG_DIR_LTR|GTK_STATE_FLAG_DIR_RTL);
+      if (indicator_is_left (widget))
+        state = state | GTK_STATE_FLAG_DIR_RTL;
+      else
+        state = state | GTK_STATE_FLAG_DIR_LTR;
+
+      gtk_style_context_set_state (context, state);
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
+      gtk_render_expander (context, cr, x, y, indicator_size, indicator_size);
+    }
+  else if (model_button->role == GTK_MENU_TRACKER_ITEM_ROLE_CHECK)
+    {
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);
+      gtk_render_check (context, cr, x, y, indicator_size, indicator_size);
+    }
+  else if (model_button->role == GTK_MENU_TRACKER_ITEM_ROLE_RADIO)
+    {
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_RADIO);
+      gtk_render_option (context, cr, x, y, indicator_size, indicator_size);
+    }
+
+  if (gtk_widget_has_visible_focus (widget))
+    {
+      GtkBorder border;
+ 
+      gtk_style_context_get_border (context, state, &border);
+
+      gtk_render_focus (context, cr,
+                        border_width + border.left + focus_pad,
+                        border_width + border.top + focus_pad,
+                        width - 2 * (border_width + focus_pad) - border.left - border.right,
+                        height - 2 * (border_width + focus_pad) - border.top - border.bottom);
+    }
+
+  gtk_style_context_restore (context);
+
+  child = gtk_bin_get_child (GTK_BIN (widget));
+  if (child)
+    gtk_container_propagate_draw (GTK_CONTAINER (widget), child, cr);
+
+  return FALSE;
+}
+
+static void
+gtk_model_button_class_init (GtkModelButtonClass *class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  object_class->set_property = gtk_model_button_set_property;
+
+  widget_class->get_preferred_width = gtk_model_button_get_preferred_width;
+  widget_class->get_preferred_width_for_height = gtk_model_button_get_preferred_width_for_height;
+  widget_class->get_preferred_height = gtk_model_button_get_preferred_height;
+  widget_class->get_preferred_height_for_width = gtk_model_button_get_preferred_height_for_width;
+  widget_class->get_preferred_height_and_baseline_for_width = 
gtk_model_button_get_preferred_height_and_baseline_for_width;
+  widget_class->size_allocate = gtk_model_button_size_allocate;
+  widget_class->draw = gtk_model_button_draw;
+
+  g_object_class_install_property (object_class, PROP_ACTION_ROLE,
+                                   g_param_spec_enum ("action-role", "action role", "action role",
+                                                      GTK_TYPE_MENU_TRACKER_ITEM_ROLE,
+                                                      GTK_MENU_TRACKER_ITEM_ROLE_NORMAL,
+                                                      G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_ICON,
+                                   g_param_spec_object ("icon", "icon", "icon", G_TYPE_ICON,
+                                                        G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_TEXT,
+                                   g_param_spec_string ("text", "text", "text", NULL,
+                                                        G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_TOGGLED,
+                                   g_param_spec_boolean ("toggled", "toggled", "toggled", FALSE,
+                                                         G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_ACCEL,
+                                   g_param_spec_string ("accel", "accel", "accel", NULL,
+                                                        G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_HAS_SUBMENU,
+                                   g_param_spec_boolean ("has-submenu", "has-submenu", "has-submenu", FALSE,
+                                                         G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_INVERTED,
+                                   g_param_spec_boolean ("inverted", "inverted", "inverted", FALSE,
+                                                         G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_class, PROP_CENTERED,
+                                   g_param_spec_boolean ("centered", "centered", "centered", FALSE,
+                                                         G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+
+  gtk_widget_class_set_accessible_role (GTK_WIDGET_CLASS (class), ATK_ROLE_PUSH_BUTTON);
+}
+
+static void
+gtk_model_button_init (GtkModelButton *button)
+{
+  gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
+  button->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  g_object_set (button->box,
+                "margin-start", 12,
+                "margin-end", 12,
+                "margin-top", 3,
+                "margin-bottom", 3,
+                NULL);
+  gtk_widget_set_halign (button->box, GTK_ALIGN_FILL);
+  gtk_widget_show (button->box);
+  button->image = gtk_image_new ();
+  button->label = gtk_label_new ("");
+  gtk_container_add (GTK_CONTAINER (button->box), button->image);
+  gtk_container_add (GTK_CONTAINER (button->box), button->label);
+  gtk_container_add (GTK_CONTAINER (button), button->box);
+}
+
+GtkWidget *
+gtk_model_button_new (void)
+{
+  return g_object_new (GTK_TYPE_MODEL_BUTTON, NULL);
+}
diff --git a/gtk/gtkmodelbutton.h b/gtk/gtkmodelbutton.h
new file mode 100644
index 0000000..b3963ba
--- /dev/null
+++ b/gtk/gtkmodelbutton.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright © 2014 Red Hat, Inc.
+ *
+ * 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 licence, 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/>.
+ *
+ * Author: Matthias Clasen
+ */
+
+#ifndef __GTK_MODEL_BUTTON_H__
+#define __GTK_MODEL_BUTTON_H__
+
+#include <gtk/gtkwidget.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_MODEL_BUTTON                            (gtk_model_button_get_type ())
+#define GTK_MODEL_BUTTON(inst)                           (G_TYPE_CHECK_INSTANCE_CAST ((inst),                
      \
+                                                             GTK_TYPE_MODEL_BUTTON, GtkModelButton))
+#define GTK_IS_MODEL_BUTTON(inst)                        (G_TYPE_CHECK_INSTANCE_TYPE ((inst),                
      \
+                                                             GTK_TYPE_MODEL_BUTTON))
+
+typedef struct _GtkModelButton                            GtkModelButton;
+
+GType                   gtk_model_button_get_type                    (void) G_GNUC_CONST;
+
+GtkWidget *             gtk_model_button_new                         (void);
+
+G_END_DECLS
+
+#endif /* __GTK_MODEL_BUTTON_H__ */
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