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[gtk+/wip/cssstyle: 4/30] cssstyle: Add GtkCssStaticStyle

commit 5f1dbe2734aede5fb3faeab79495aa8f5b52990f
Author: Benjamin Otte <otte redhat com>
Date:   Sun Oct 26 05:07:06 2014 +0100

    cssstyle: Add GtkCssStaticStyle
    
    For now, this is only an implementation detail of the animated style.
    
    The idea is to use GtkCssStaticStyle as the result of CSS queries and
    then put a GtkCssAnimatedStyle on top that manages the animations. The
    neat thing about this is that you can cache the static values.

 gtk/Makefile.am                  |    2 +
 gtk/gtkcssanimatedstyle.c        |  113 ++-----------------
 gtk/gtkcssanimatedstyleprivate.h |    8 +-
 gtk/gtkcssstaticstyle.c          |  225 ++++++++++++++++++++++++++++++++++++++
 gtk/gtkcssstaticstyleprivate.h   |   69 ++++++++++++
 5 files changed, 307 insertions(+), 110 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 0573e3e..4052bb7 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -406,6 +406,7 @@ gtk_private_h_sources =             \
        gtkcssshadowsvalueprivate.h     \
        gtkcssshadowvalueprivate.h      \
        gtkcssshorthandpropertyprivate.h \
+       gtkcssstaticstyleprivate.h      \
        gtkcssstringvalueprivate.h      \
        gtkcssstylefuncsprivate.h \
        gtkcssstyleprivate.h    \
@@ -634,6 +635,7 @@ gtk_base_c_sources =                \
        gtkcssshadowvalue.c     \
        gtkcssshorthandproperty.c \
        gtkcssshorthandpropertyimpl.c \
+       gtkcssstaticstyle.c     \
        gtkcssstylefuncs.c      \
        gtkcssstyleproperty.c   \
        gtkcssstylepropertyimpl.c \
diff --git a/gtk/gtkcssanimatedstyle.c b/gtk/gtkcssanimatedstyle.c
index 4ced8d1..1d20c14 100644
--- a/gtk/gtkcssanimatedstyle.c
+++ b/gtk/gtkcssanimatedstyle.c
@@ -29,6 +29,7 @@
 #include "gtkcssnumbervalueprivate.h"
 #include "gtkcsssectionprivate.h"
 #include "gtkcssshorthandpropertyprivate.h"
+#include "gtkcssstaticstyleprivate.h"
 #include "gtkcssstringvalueprivate.h"
 #include "gtkcssstylepropertyprivate.h"
 #include "gtkcsstransitionprivate.h"
@@ -59,11 +60,7 @@ gtk_css_animated_style_get_section (GtkCssStyle *style,
 {
   GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
 
-  if (animated->sections == NULL ||
-      id >= animated->sections->len)
-    return NULL;
-
-  return g_ptr_array_index (animated->sections, id);
+  return gtk_css_style_get_section (animated->style, id);
 }
 
 static GtkBitmask *
@@ -71,16 +68,9 @@ gtk_css_animated_style_compute_dependencies (GtkCssStyle      *style,
                                              const GtkBitmask *parent_changes)
 {
   GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
-  GtkBitmask *changes;
-
-  changes = _gtk_bitmask_copy (parent_changes);
-  changes = _gtk_bitmask_intersect (changes, animated->depends_on_parent);
-  if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_COLOR))
-    changes = _gtk_bitmask_union (changes, animated->depends_on_color);
-  if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_FONT_SIZE))
-    changes = _gtk_bitmask_union (changes, animated->depends_on_font_size);
 
-  return changes;
+  /* XXX: This misses dependencies due to animations */
+  return gtk_css_style_compute_dependencies (animated->style, parent_changes);
 }
 
 static void
@@ -88,16 +78,6 @@ gtk_css_animated_style_dispose (GObject *object)
 {
   GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
 
-  if (style->values)
-    {
-      g_ptr_array_unref (style->values);
-      style->values = NULL;
-    }
-  if (style->sections)
-    {
-      g_ptr_array_unref (style->sections);
-      style->sections = NULL;
-    }
   if (style->animated_values)
     {
       g_ptr_array_unref (style->animated_values);
@@ -115,10 +95,7 @@ gtk_css_animated_style_finalize (GObject *object)
 {
   GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
 
-  _gtk_bitmask_free (style->depends_on_parent);
-  _gtk_bitmask_free (style->equals_parent);
-  _gtk_bitmask_free (style->depends_on_color);
-  _gtk_bitmask_free (style->depends_on_font_size);
+  g_object_unref (style->style);
 
   G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->finalize (object);
 }
@@ -140,10 +117,7 @@ gtk_css_animated_style_class_init (GtkCssAnimatedStyleClass *klass)
 static void
 gtk_css_animated_style_init (GtkCssAnimatedStyle *style)
 {
-  style->depends_on_parent = _gtk_bitmask_new ();
-  style->equals_parent = _gtk_bitmask_new ();
-  style->depends_on_color = _gtk_bitmask_new ();
-  style->depends_on_font_size = _gtk_bitmask_new ();
+  style->style = gtk_css_static_style_new ();
 }
 
 GtkCssStyle *
@@ -152,13 +126,6 @@ gtk_css_animated_style_new (void)
   return g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);
 }
 
-static void
-maybe_unref_section (gpointer section)
-{
-  if (section)
-    gtk_css_section_unref (section);
-}
-
 void
 gtk_css_animated_style_compute_value (GtkCssAnimatedStyle     *style,
                                       GtkStyleProviderPrivate *provider,
@@ -168,69 +135,13 @@ gtk_css_animated_style_compute_value (GtkCssAnimatedStyle     *style,
                                       GtkCssValue             *specified,
                                       GtkCssSection           *section)
 {
-  GtkCssDependencies dependencies;
-  GtkCssValue *value;
-
   gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
   gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
   gtk_internal_return_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style));
 
-  /* http://www.w3.org/TR/css3-cascade/#cascade
-   * Then, for every element, the value for each property can be found
-   * by following this pseudo-algorithm:
-   * 1) Identify all declarations that apply to the element
-   */
-  if (specified == NULL)
-    {
-      GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
-
-      if (_gtk_css_style_property_is_inherit (prop))
-        specified = _gtk_css_inherit_value_new ();
-      else
-        specified = _gtk_css_initial_value_new ();
-    }
-  else
-    _gtk_css_value_ref (specified);
-
-  value = _gtk_css_value_compute (specified, id, provider, scale, GTK_CSS_STYLE (style), parent_style, 
&dependencies);
-
-  if (style->values == NULL)
-    style->values = g_ptr_array_new_full (_gtk_css_style_property_get_n_properties (),
-                                          (GDestroyNotify)_gtk_css_value_unref);
-  if (id >= style->values->len)
-   g_ptr_array_set_size (style->values, id + 1);
-
-  if (g_ptr_array_index (style->values, id))
-    _gtk_css_value_unref (g_ptr_array_index (style->values, id));
-  g_ptr_array_index (style->values, id) = _gtk_css_value_ref (value);
-
-  if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
-    style->depends_on_parent = _gtk_bitmask_set (style->depends_on_parent, id, TRUE);
-  if (dependencies & (GTK_CSS_EQUALS_PARENT))
-    style->equals_parent = _gtk_bitmask_set (style->equals_parent, id, TRUE);
-  if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
-    style->depends_on_color = _gtk_bitmask_set (style->depends_on_color, id, TRUE);
-  if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
-    style->depends_on_font_size = _gtk_bitmask_set (style->depends_on_font_size, id, TRUE);
-
-  if (style->sections && style->sections->len > id && g_ptr_array_index (style->sections, id))
-    {
-      gtk_css_section_unref (g_ptr_array_index (style->sections, id));
-      g_ptr_array_index (style->sections, id) = NULL;
-    }
-
-  if (section)
-    {
-      if (style->sections == NULL)
-        style->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
-      if (style->sections->len <= id)
-        g_ptr_array_set_size (style->sections, id + 1);
-
-      g_ptr_array_index (style->sections, id) = gtk_css_section_ref (section);
-    }
-
-  _gtk_css_value_unref (value);
-  _gtk_css_value_unref (specified);
+  gtk_css_static_style_compute_value (GTK_CSS_STATIC_STYLE (style->style),
+                                      provider, scale, parent_style,
+                                      id, specified, section);
 }
 
 void
@@ -258,11 +169,7 @@ gtk_css_animated_style_get_intrinsic_value (GtkCssAnimatedStyle *style,
 {
   gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
 
-  if (style->values == NULL ||
-      id >= style->values->len)
-    return NULL;
-
-  return g_ptr_array_index (style->values, id);
+  return gtk_css_style_get_value (style->style, id);
 }
 
 /* TRANSITIONS */
diff --git a/gtk/gtkcssanimatedstyleprivate.h b/gtk/gtkcssanimatedstyleprivate.h
index 07b094b..141050f 100644
--- a/gtk/gtkcssanimatedstyleprivate.h
+++ b/gtk/gtkcssanimatedstyleprivate.h
@@ -38,17 +38,11 @@ struct _GtkCssAnimatedStyle
 {
   GtkCssStyle parent;
 
-  GPtrArray             *values;               /* the unanimated (aka intrinsic) values */
-  GPtrArray             *sections;             /* sections the values are defined in */
+  GtkCssStyle           *style;                /* the style if we weren't animating */
 
   GPtrArray             *animated_values;      /* NULL or array of animated values/NULL if not animated */
   gint64                 current_time;         /* the current time in our world */
   GSList                *animations;           /* the running animations, least important one first */
-
-  GtkBitmask            *depends_on_parent;    /* for intrinsic values */
-  GtkBitmask            *equals_parent;        /* dito */
-  GtkBitmask            *depends_on_color;     /* dito */
-  GtkBitmask            *depends_on_font_size; /* dito */
 };
 
 struct _GtkCssAnimatedStyleClass
diff --git a/gtk/gtkcssstaticstyle.c b/gtk/gtkcssstaticstyle.c
new file mode 100644
index 0000000..bcb37a0
--- /dev/null
+++ b/gtk/gtkcssstaticstyle.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright © 2012 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 "gtkcssstaticstyleprivate.h"
+
+#include "gtkcssanimationprivate.h"
+#include "gtkcssarrayvalueprivate.h"
+#include "gtkcssenumvalueprivate.h"
+#include "gtkcssinheritvalueprivate.h"
+#include "gtkcssinitialvalueprivate.h"
+#include "gtkcssnumbervalueprivate.h"
+#include "gtkcsssectionprivate.h"
+#include "gtkcssshorthandpropertyprivate.h"
+#include "gtkcssstringvalueprivate.h"
+#include "gtkcssstylepropertyprivate.h"
+#include "gtkcsstransitionprivate.h"
+#include "gtkprivate.h"
+#include "gtkstyleanimationprivate.h"
+#include "gtkstylepropertyprivate.h"
+#include "gtkstyleproviderprivate.h"
+
+G_DEFINE_TYPE (GtkCssStaticStyle, gtk_css_static_style, GTK_TYPE_CSS_STYLE)
+
+static GtkCssValue *
+gtk_css_static_style_get_value (GtkCssStyle *style,
+                                guint        id)
+{
+  GtkCssStaticStyle *sstyle = GTK_CSS_STATIC_STYLE (style);
+
+  if (sstyle->values == NULL ||
+      id >= sstyle->values->len)
+    return NULL;
+
+  return g_ptr_array_index (sstyle->values, id);
+}
+
+static GtkCssSection *
+gtk_css_static_style_get_section (GtkCssStyle *style,
+                                    guint        id)
+{
+  GtkCssStaticStyle *sstyle = GTK_CSS_STATIC_STYLE (style);
+
+  if (sstyle->sections == NULL ||
+      id >= sstyle->sections->len)
+    return NULL;
+
+  return g_ptr_array_index (sstyle->sections, id);
+}
+
+static GtkBitmask *
+gtk_css_static_style_compute_dependencies (GtkCssStyle      *style,
+                                             const GtkBitmask *parent_changes)
+{
+  GtkCssStaticStyle *sstyle = GTK_CSS_STATIC_STYLE (style);
+  GtkBitmask *changes;
+
+  changes = _gtk_bitmask_copy (parent_changes);
+  changes = _gtk_bitmask_intersect (changes, sstyle->depends_on_parent);
+  if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_COLOR))
+    changes = _gtk_bitmask_union (changes, sstyle->depends_on_color);
+  if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_FONT_SIZE))
+    changes = _gtk_bitmask_union (changes, sstyle->depends_on_font_size);
+
+  return changes;
+}
+
+static void
+gtk_css_static_style_dispose (GObject *object)
+{
+  GtkCssStaticStyle *style = GTK_CSS_STATIC_STYLE (object);
+
+  if (style->values)
+    {
+      g_ptr_array_unref (style->values);
+      style->values = NULL;
+    }
+  if (style->sections)
+    {
+      g_ptr_array_unref (style->sections);
+      style->sections = NULL;
+    }
+
+  G_OBJECT_CLASS (gtk_css_static_style_parent_class)->dispose (object);
+}
+
+static void
+gtk_css_static_style_finalize (GObject *object)
+{
+  GtkCssStaticStyle *style = GTK_CSS_STATIC_STYLE (object);
+
+  _gtk_bitmask_free (style->depends_on_parent);
+  _gtk_bitmask_free (style->equals_parent);
+  _gtk_bitmask_free (style->depends_on_color);
+  _gtk_bitmask_free (style->depends_on_font_size);
+
+  G_OBJECT_CLASS (gtk_css_static_style_parent_class)->finalize (object);
+}
+
+static void
+gtk_css_static_style_class_init (GtkCssStaticStyleClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkCssStyleClass *style_class = GTK_CSS_STYLE_CLASS (klass);
+
+  object_class->dispose = gtk_css_static_style_dispose;
+  object_class->finalize = gtk_css_static_style_finalize;
+
+  style_class->get_value = gtk_css_static_style_get_value;
+  style_class->get_section = gtk_css_static_style_get_section;
+  style_class->compute_dependencies = gtk_css_static_style_compute_dependencies;
+}
+
+static void
+gtk_css_static_style_init (GtkCssStaticStyle *style)
+{
+  style->depends_on_parent = _gtk_bitmask_new ();
+  style->equals_parent = _gtk_bitmask_new ();
+  style->depends_on_color = _gtk_bitmask_new ();
+  style->depends_on_font_size = _gtk_bitmask_new ();
+}
+
+GtkCssStyle *
+gtk_css_static_style_new (void)
+{
+  return g_object_new (GTK_TYPE_CSS_STATIC_STYLE, NULL);
+}
+
+static void
+maybe_unref_section (gpointer section)
+{
+  if (section)
+    gtk_css_section_unref (section);
+}
+
+void
+gtk_css_static_style_compute_value (GtkCssStaticStyle       *style,
+                                    GtkStyleProviderPrivate *provider,
+                                    int                      scale,
+                                    GtkCssStyle             *parent_style,
+                                    guint                    id,
+                                    GtkCssValue             *specified,
+                                    GtkCssSection           *section)
+{
+  GtkCssDependencies dependencies;
+  GtkCssValue *value;
+
+  gtk_internal_return_if_fail (GTK_IS_CSS_STATIC_STYLE (style));
+  gtk_internal_return_if_fail (GTK_IS_STYLE_PROVIDER_PRIVATE (provider));
+  gtk_internal_return_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style));
+
+  /* http://www.w3.org/TR/css3-cascade/#cascade
+   * Then, for every element, the value for each property can be found
+   * by following this pseudo-algorithm:
+   * 1) Identify all declarations that apply to the element
+   */
+  if (specified == NULL)
+    {
+      GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
+
+      if (_gtk_css_style_property_is_inherit (prop))
+        specified = _gtk_css_inherit_value_new ();
+      else
+        specified = _gtk_css_initial_value_new ();
+    }
+  else
+    _gtk_css_value_ref (specified);
+
+  value = _gtk_css_value_compute (specified, id, provider, scale, GTK_CSS_STYLE (style), parent_style, 
&dependencies);
+
+  if (style->values == NULL)
+    style->values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
+  if (id >= style->values->len)
+   g_ptr_array_set_size (style->values, id + 1);
+
+  if (g_ptr_array_index (style->values, id))
+    _gtk_css_value_unref (g_ptr_array_index (style->values, id));
+  g_ptr_array_index (style->values, id) = _gtk_css_value_ref (value);
+
+  if (dependencies & (GTK_CSS_DEPENDS_ON_PARENT | GTK_CSS_EQUALS_PARENT))
+    style->depends_on_parent = _gtk_bitmask_set (style->depends_on_parent, id, TRUE);
+  if (dependencies & (GTK_CSS_EQUALS_PARENT))
+    style->equals_parent = _gtk_bitmask_set (style->equals_parent, id, TRUE);
+  if (dependencies & (GTK_CSS_DEPENDS_ON_COLOR))
+    style->depends_on_color = _gtk_bitmask_set (style->depends_on_color, id, TRUE);
+  if (dependencies & (GTK_CSS_DEPENDS_ON_FONT_SIZE))
+    style->depends_on_font_size = _gtk_bitmask_set (style->depends_on_font_size, id, TRUE);
+
+  if (style->sections && style->sections->len > id && g_ptr_array_index (style->sections, id))
+    {
+      gtk_css_section_unref (g_ptr_array_index (style->sections, id));
+      g_ptr_array_index (style->sections, id) = NULL;
+    }
+
+  if (section)
+    {
+      if (style->sections == NULL)
+        style->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
+      if (style->sections->len <= id)
+        g_ptr_array_set_size (style->sections, id + 1);
+
+      g_ptr_array_index (style->sections, id) = gtk_css_section_ref (section);
+    }
+
+  _gtk_css_value_unref (value);
+  _gtk_css_value_unref (specified);
+}
+
diff --git a/gtk/gtkcssstaticstyleprivate.h b/gtk/gtkcssstaticstyleprivate.h
new file mode 100644
index 0000000..390a911
--- /dev/null
+++ b/gtk/gtkcssstaticstyleprivate.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2012 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_STATIC_STYLE_PRIVATE_H__
+#define __GTK_CSS_STATIC_STYLE_PRIVATE_H__
+
+#include "gtk/gtkcssstyleprivate.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CSS_STATIC_STYLE           (gtk_css_static_style_get_type ())
+#define GTK_CSS_STATIC_STYLE(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_STATIC_STYLE, 
GtkCssStaticStyle))
+#define GTK_CSS_STATIC_STYLE_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_STATIC_STYLE, 
GtkCssStaticStyleClass))
+#define GTK_IS_CSS_STATIC_STYLE(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_STATIC_STYLE))
+#define GTK_IS_CSS_STATIC_STYLE_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_STATIC_STYLE))
+#define GTK_CSS_STATIC_STYLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_STATIC_STYLE, 
GtkCssStaticStyleClass))
+
+typedef struct _GtkCssStaticStyle           GtkCssStaticStyle;
+typedef struct _GtkCssStaticStyleClass      GtkCssStaticStyleClass;
+
+struct _GtkCssStaticStyle
+{
+  GtkCssStyle parent;
+
+  GPtrArray             *values;               /* the values */
+  GPtrArray             *sections;             /* sections the values are defined in */
+
+  GtkBitmask            *depends_on_parent;    /* values that depend on parent values */
+  GtkBitmask            *equals_parent;        /* values that equal their parent values */
+  GtkBitmask            *depends_on_color;     /* values that depend on the color property */
+  GtkBitmask            *depends_on_font_size; /* values that depend on the font-size property */
+};
+
+struct _GtkCssStaticStyleClass
+{
+  GtkCssStyleClass parent_class;
+};
+
+GType                   gtk_css_static_style_get_type           (void) G_GNUC_CONST;
+
+GtkCssStyle *           gtk_css_static_style_new                (void);
+
+void                    gtk_css_static_style_compute_value      (GtkCssStaticStyle      *style,
+                                                                 GtkStyleProviderPrivate*provider,
+                                                                int                     scale,
+                                                                 GtkCssStyle            *parent_style,
+                                                                 guint                   id,
+                                                                 GtkCssValue            *specified,
+                                                                 GtkCssSection          *section);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_STATIC_STYLE_PRIVATE_H__ */
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