[gtk/wip/baedert/for-master] css: Drop a few dynamic type checks

[Timm Bäder <baedert src gnome org>]

commit 8a7f6b82a7a9e050c5ded4bc17be172f17064747
Author: Timm Bäder <mail baedert org>
Date:   Wed May 6 11:40:52 2020 +0200

    css: Drop a few dynamic type checks
    
    We hit these code paths a lot

 gtk/gtkcssanimatedstyle.c |  2 +-
 gtk/gtkcssstyle.c         |  2 --
 gtk/gtkcsstransition.c    | 11 +++++------
 gtk/gtkstyleanimation.c   |  2 --
 4 files changed, 6 insertions(+), 11 deletions(-)
---
diff --git a/gtk/gtkcssanimatedstyle.c b/gtk/gtkcssanimatedstyle.c
index d67bb9f191..c04f040b0b 100644
--- a/gtk/gtkcssanimatedstyle.c
+++ b/gtk/gtkcssanimatedstyle.c
@@ -53,7 +53,7 @@ gtk_css_animated_style_get_section (GtkCssStyle *style,
 static gboolean
 gtk_css_animated_style_is_static (GtkCssStyle *style)
 {
-  GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
+  GtkCssAnimatedStyle *animated = (GtkCssAnimatedStyle *)style;
   guint i;
 
   for (i = 0; i < animated->n_animations; i ++)
diff --git a/gtk/gtkcssstyle.c b/gtk/gtkcssstyle.c
index b02c4dd394..8a15649b74 100644
--- a/gtk/gtkcssstyle.c
+++ b/gtk/gtkcssstyle.c
@@ -293,8 +293,6 @@ gtk_css_style_get_section (GtkCssStyle *style,
 gboolean
 gtk_css_style_is_static (GtkCssStyle *style)
 {
-  gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (style), TRUE);
-
   return GTK_CSS_STYLE_GET_CLASS (style)->is_static (style);
 }
 
diff --git a/gtk/gtkcsstransition.c b/gtk/gtkcsstransition.c
index 62731a513d..bb872a0b17 100644
--- a/gtk/gtkcsstransition.c
+++ b/gtk/gtkcsstransition.c
@@ -30,8 +30,7 @@ static GtkStyleAnimation *
 gtk_css_transition_advance (GtkStyleAnimation    *style_animation,
                            gint64                timestamp)
 {
-  GtkCssTransition *source = GTK_CSS_TRANSITION (style_animation);
-
+  GtkCssTransition *source = (GtkCssTransition *)style_animation;
   GtkCssTransition *transition;
 
   transition = g_object_new (GTK_TYPE_CSS_TRANSITION, NULL);
@@ -44,14 +43,14 @@ gtk_css_transition_advance (GtkStyleAnimation    *style_animation,
   gtk_progress_tracker_advance_frame (&transition->tracker, timestamp);
   transition->finished = gtk_progress_tracker_get_state (&transition->tracker) == GTK_PROGRESS_STATE_AFTER;
 
-  return GTK_STYLE_ANIMATION (transition);
+  return (GtkStyleAnimation *)transition;
 }
 
 static void
 gtk_css_transition_apply_values (GtkStyleAnimation   *style_animation,
                                  GtkCssAnimatedStyle *style)
 {
-  GtkCssTransition *transition = GTK_CSS_TRANSITION (style_animation);
+  GtkCssTransition *transition = (GtkCssTransition *)style_animation;
   GtkCssValue *value, *end;
   double progress;
   GtkProgressState state;
@@ -86,7 +85,7 @@ gtk_css_transition_apply_values (GtkStyleAnimation   *style_animation,
 static gboolean
 gtk_css_transition_is_finished (GtkStyleAnimation *animation)
 {
-  GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
+  GtkCssTransition *transition = (GtkCssTransition *)animation;
 
   return transition->finished;
 }
@@ -94,7 +93,7 @@ gtk_css_transition_is_finished (GtkStyleAnimation *animation)
 static gboolean
 gtk_css_transition_is_static (GtkStyleAnimation *animation)
 {
-  GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
+  GtkCssTransition *transition = (GtkCssTransition *)animation;
 
   return transition->finished;
 }
diff --git a/gtk/gtkstyleanimation.c b/gtk/gtkstyleanimation.c
index 89f8319fba..754f09b0c0 100644
--- a/gtk/gtkstyleanimation.c
+++ b/gtk/gtkstyleanimation.c
@@ -117,8 +117,6 @@ _gtk_style_animation_is_static (GtkStyleAnimation *animation)
 {
   GtkStyleAnimationClass *klass;
 
-  g_return_val_if_fail (GTK_IS_STYLE_ANIMATION (animation), TRUE);
-
   klass = GTK_STYLE_ANIMATION_GET_CLASS (animation);
 
   return klass->is_static (animation);