gadget: Add GtkCssCustomGadget

The thing you use when you want to custom-do everything.

3 files changed, 271 insertions, 1 deletions

diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 2d18db9b87..51566acb1c 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -386,7 +386,8 @@ gtk_private_h_sources =		\
 	gtkcssbordervalueprivate.h	\
 	gtkcsscolorvalueprivate.h	\
 	gtkcsscornervalueprivate.h	\
-	gtkcsscustompropertyprivate.h \
+	gtkcsscustomgadgetprivate.h	\
+	gtkcsscustompropertyprivate.h 	\
 	gtkcsseasevalueprivate.h	\
 	gtkcssenginevalueprivate.h	\
 	gtkcssenumvalueprivate.h	\
@@ -640,6 +641,7 @@ gtk_base_c_sources = 		\
 	gtkcssbordervalue.c	\
 	gtkcsscolorvalue.c	\
 	gtkcsscornervalue.c	\
+	gtkcsscustomgadget.c	\
 	gtkcsscustomproperty.c	\
 	gtkcsseasevalue.c	\
 	gtkcssenumvalue.c	\
diff --git a/gtk/gtkcsscustomgadget.c b/gtk/gtkcsscustomgadget.c
new file mode 100644
index 0000000000..1dcc5a3265
--- /dev/null
+++ b/gtk/gtkcsscustomgadget.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright © 2015 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 2.1 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 "gtkcsscustomgadgetprivate.h"
+
+#include "gtkcssnodeprivate.h"
+
+typedef struct _GtkCssCustomGadgetPrivate GtkCssCustomGadgetPrivate;
+struct _GtkCssCustomGadgetPrivate {
+  GtkCssPreferredSizeFunc          preferred_size_func;
+  GtkCssAllocateFunc               allocate_func;
+  GtkCssDrawFunc                   draw_func;
+  gpointer                         data;
+  GDestroyNotify                   destroy_func;
+};
+
+G_DEFINE_TYPE_WITH_CODE (GtkCssCustomGadget, gtk_css_custom_gadget, GTK_TYPE_CSS_GADGET,
+                         G_ADD_PRIVATE (GtkCssCustomGadget))
+
+static void
+gtk_css_custom_gadget_get_preferred_size (GtkCssGadget   *gadget,
+                                          GtkOrientation  orientation,
+                                          gint            for_size,
+                                          gint           *minimum,
+                                          gint           *natural,
+                                          gint           *minimum_baseline,
+                                          gint           *natural_baseline)
+{
+  GtkCssCustomGadgetPrivate *priv = gtk_css_custom_gadget_get_instance_private (GTK_CSS_CUSTOM_GADGET (gadget));
+
+  if (priv->preferred_size_func)
+    return priv->preferred_size_func (gadget, orientation, for_size, 
+                                      minimum, natural,
+                                      minimum_baseline, natural_baseline,
+                                      priv->data);
+  else
+    return GTK_CSS_GADGET_CLASS (gtk_css_custom_gadget_parent_class)->get_preferred_size (gadget, orientation, for_size, 
+                                                                                          minimum, natural,
+                                                                                          minimum_baseline, natural_baseline);
+}
+
+static void
+gtk_css_custom_gadget_allocate (GtkCssGadget        *gadget,
+                                const GtkAllocation *allocation,
+                                int                  baseline,
+                                GtkAllocation       *out_clip)
+{
+  GtkCssCustomGadgetPrivate *priv = gtk_css_custom_gadget_get_instance_private (GTK_CSS_CUSTOM_GADGET (gadget));
+
+  if (priv->allocate_func)
+    return priv->allocate_func (gadget, allocation, baseline, out_clip, priv->data);
+  else
+    return GTK_CSS_GADGET_CLASS (gtk_css_custom_gadget_parent_class)->allocate (gadget, allocation, baseline, out_clip);
+}
+
+static gboolean
+gtk_css_custom_gadget_draw (GtkCssGadget *gadget,
+                            cairo_t      *cr,
+                            int           x,
+                            int           y,
+                            int           width,
+                            int           height)
+{
+  GtkCssCustomGadgetPrivate *priv = gtk_css_custom_gadget_get_instance_private (GTK_CSS_CUSTOM_GADGET (gadget));
+
+  if (priv->draw_func)
+    return priv->draw_func (gadget, cr, x, y, width, height, priv->data);
+  else
+    return GTK_CSS_GADGET_CLASS (gtk_css_custom_gadget_parent_class)->draw (gadget, cr, x, y, width, height);
+}
+
+static void
+gtk_css_custom_gadget_finalize (GObject *object)
+{
+  GtkCssCustomGadgetPrivate *priv = gtk_css_custom_gadget_get_instance_private (GTK_CSS_CUSTOM_GADGET (object));
+
+  if (priv->destroy_func)
+    priv->destroy_func (priv->data);
+
+  G_OBJECT_CLASS (gtk_css_custom_gadget_parent_class)->finalize (object);
+}
+
+static void
+gtk_css_custom_gadget_class_init (GtkCssCustomGadgetClass *klass)
+{
+  GtkCssGadgetClass *gadget_class = GTK_CSS_GADGET_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gtk_css_custom_gadget_finalize;
+
+  gadget_class->get_preferred_size = gtk_css_custom_gadget_get_preferred_size;
+  gadget_class->allocate = gtk_css_custom_gadget_allocate;
+  gadget_class->draw = gtk_css_custom_gadget_draw;
+}
+
+static void
+gtk_css_custom_gadget_init (GtkCssCustomGadget *custom_gadget)
+{
+
+}
+
+GtkCssGadget *
+gtk_css_custom_gadget_new_for_node (GtkCssNode                 *node,
+                                    GtkWidget                  *owner,
+                                    GtkCssPreferredSizeFunc     preferred_size_func,
+                                    GtkCssAllocateFunc          allocate_func,
+                                    GtkCssDrawFunc              draw_func,
+                                    gpointer                    data,
+                                    GDestroyNotify              destroy_func)
+{
+  GtkCssCustomGadgetPrivate *priv;
+  GtkCssGadget *result;
+
+  result = g_object_new (GTK_TYPE_CSS_CUSTOM_GADGET,
+                         "node", node,
+                         "owner", owner,
+                         NULL);
+
+  priv = gtk_css_custom_gadget_get_instance_private (GTK_CSS_CUSTOM_GADGET (result));
+
+  priv->preferred_size_func = preferred_size_func;
+  priv->allocate_func = allocate_func;
+  priv->draw_func = draw_func;
+  priv->data = data;
+  priv->destroy_func = destroy_func;
+
+  return result;
+}
+
+GtkCssGadget *
+gtk_css_custom_gadget_new (const char                 *name,
+                           GtkWidget                  *owner,
+                           GtkCssGadget               *parent,
+                           GtkCssGadget               *next_sibling,
+                           GtkCssPreferredSizeFunc     preferred_size_func,
+                           GtkCssAllocateFunc          allocate_func,
+                           GtkCssDrawFunc              draw_func,
+                           gpointer                    data,
+                           GDestroyNotify              destroy_func)
+{
+  GtkCssNode *node;
+  GtkCssGadget *result;
+
+  node = gtk_css_node_new ();
+  gtk_css_node_set_name (node, g_intern_string (name));
+  if (parent)
+    gtk_css_node_insert_before (gtk_css_gadget_get_node (parent),
+                                node,
+                                next_sibling ? gtk_css_gadget_get_node (next_sibling) : NULL);
+
+  result = gtk_css_custom_gadget_new_for_node (node,
+                                               owner,
+                                               preferred_size_func,
+                                               allocate_func,
+                                               draw_func,
+                                               data,
+                                               destroy_func);
+
+  g_object_unref (node);
+
+  return result;
+}
diff --git a/gtk/gtkcsscustomgadgetprivate.h b/gtk/gtkcsscustomgadgetprivate.h
new file mode 100644
index 0000000000..994237a2e5
--- /dev/null
+++ b/gtk/gtkcsscustomgadgetprivate.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright © 2015 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 2.1 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>
+ */
+
+#ifndef __GTK_CSS_CUSTOM_GADGET_PRIVATE_H__
+#define __GTK_CSS_CUSTOM_GADGET_PRIVATE_H__
+
+#include "gtk/gtkcssgadgetprivate.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CSS_CUSTOM_GADGET           (gtk_css_custom_gadget_get_type ())
+#define GTK_CSS_CUSTOM_GADGET(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_CUSTOM_GADGET, GtkCssCustomGadget))
+#define GTK_CSS_CUSTOM_GADGET_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_CUSTOM_GADGET, GtkCssCustomGadgetClass))
+#define GTK_IS_CSS_CUSTOM_GADGET(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_CUSTOM_GADGET))
+#define GTK_IS_CSS_CUSTOM_GADGET_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_CUSTOM_GADGET))
+#define GTK_CSS_CUSTOM_GADGET_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_CUSTOM_GADGET, GtkCssCustomGadgetClass))
+
+typedef struct _GtkCssCustomGadget           GtkCssCustomGadget;
+typedef struct _GtkCssCustomGadgetClass      GtkCssCustomGadgetClass;
+
+typedef void    (* GtkCssPreferredSizeFunc)             (GtkCssGadget           *gadget,
+                                                         GtkOrientation          orientation,
+                                                         gint                    for_size,
+                                                         gint                   *minimum,
+                                                         gint                   *natural,
+                                                         gint                   *minimum_baseline,
+                                                         gint                   *natural_baseline,
+                                                         gpointer                data);
+typedef void    (* GtkCssAllocateFunc)                  (GtkCssGadget           *gadget,
+                                                         const GtkAllocation    *allocation,
+                                                         int                     baseline,
+                                                         GtkAllocation          *out_clip,
+                                                         gpointer                data);
+typedef gboolean (* GtkCssDrawFunc)                     (GtkCssGadget           *gadget,
+                                                         cairo_t                *cr,
+                                                         int                     x,
+                                                         int                     y,
+                                                         int                     width,
+                                                         int                     height,
+                                                         gpointer                data);
+struct _GtkCssCustomGadget
+{
+  GtkCssGadget parent;
+};
+
+struct _GtkCssCustomGadgetClass
+{
+  GtkCssGadgetClass  parent_class;
+};
+
+GType           gtk_css_custom_gadget_get_type                 (void) G_GNUC_CONST;
+
+GtkCssGadget *  gtk_css_custom_gadget_new                      (const char                      *name,
+                                                                GtkWidget                       *owner,
+                                                                GtkCssGadget                    *parent,
+                                                                GtkCssGadget                    *next_sibling,
+                                                                GtkCssPreferredSizeFunc          get_preferred_size_func,
+                                                                GtkCssAllocateFunc               allocate_func,
+                                                                GtkCssDrawFunc                   draw_func,
+                                                                gpointer                         data,
+                                                                GDestroyNotify                   destroy_func);
+GtkCssGadget *  gtk_css_custom_gadget_new_for_node             (GtkCssNode                      *node,
+                                                                GtkWidget                       *owner,
+                                                                GtkCssPreferredSizeFunc          preferred_size_func,
+                                                                GtkCssAllocateFunc               allocate_func,
+                                                                GtkCssDrawFunc                   draw_func,
+                                                                gpointer                         data,
+                                                                GDestroyNotify                   destroy_func);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_CUSTOM_GADGET_PRIVATE_H__ */