[gtk+/wip/renderops: 5/6] inspector: Handle background rendering in snapshots

[Benjamin Otte <otte src gnome org>]

commit b8accdcd0ac35b1bd36f5049fd6ecafc9c409e61
Author: Benjamin Otte <otte redhat com>
Date:   Tue Jun 30 05:07:16 2015 +0200

    inspector: Handle background rendering in snapshots

 gtk/inspector/Makefile.inc                   |    2 +
 gtk/inspector/gtkrenderoperationbackground.c |  130 ++++++++++++++++++++++++++
 gtk/inspector/gtkrenderoperationbackground.h |   67 +++++++++++++
 gtk/inspector/recordingrenderops.c           |   22 +++++
 4 files changed, 221 insertions(+), 0 deletions(-)
---
diff --git a/gtk/inspector/Makefile.inc b/gtk/inspector/Makefile.inc
index cd05907..fff6188 100644
--- a/gtk/inspector/Makefile.inc
+++ b/gtk/inspector/Makefile.inc
@@ -10,6 +10,7 @@ inspector_c_sources =                         \
        inspector/gestures.c            \
        inspector/graphdata.c           \
         inspector/gtkrenderoperation.c  \
+        inspector/gtkrenderoperationbackground.c   \
         inspector/gtkrenderoperationcairo.c   \
         inspector/gtkrenderoperationwidget.c  \
        inspector/gtktreemodelcssnode.c \
@@ -46,6 +47,7 @@ inspector_h_sources =                         \
        inspector/gestures.h            \
        inspector/graphdata.h           \
         inspector/gtkrenderoperation.h  \
+        inspector/gtkrenderoperationbackground.h   \
         inspector/gtkrenderoperationcairo.h   \
         inspector/gtkrenderoperationwidget.h  \
        inspector/gtktreemodelcssnode.h \
diff --git a/gtk/inspector/gtkrenderoperationbackground.c b/gtk/inspector/gtkrenderoperationbackground.c
new file mode 100644
index 0000000..20e5ff1
--- /dev/null
+++ b/gtk/inspector/gtkrenderoperationbackground.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright © 2015 Benjamin Otte <otte gnome org>
+ *
+ * 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 "gtkrenderoperationbackground.h"
+
+#include <math.h>
+
+#include "gtkcssstyleprivate.h"
+#include "gtkcssshadowsvalueprivate.h"
+#include "gtkrenderbackgroundprivate.h"
+
+G_DEFINE_TYPE (GtkRenderOperationBackground, gtk_render_operation_background, GTK_TYPE_RENDER_OPERATION)
+
+static void
+gtk_render_operation_background_get_clip (GtkRenderOperation    *operation,
+                                          cairo_rectangle_int_t *clip)
+{
+  GtkRenderOperationBackground *oper = GTK_RENDER_OPERATION_BACKGROUND (operation);
+  GtkBorder extents;
+
+  _gtk_css_shadows_value_get_extents (gtk_css_style_get_value (oper->style,
+                                                               GTK_CSS_PROPERTY_BOX_SHADOW),
+                                      &extents);
+
+  clip->x = -extents.left;
+  clip->y = -extents.right;
+  clip->width = ceil (oper->width) + extents.left + extents.right;
+  clip->height = ceil (oper->height) + extents.top + extents.bottom;
+}
+
+static void
+gtk_render_operation_background_get_matrix (GtkRenderOperation *operation,
+                                            cairo_matrix_t     *matrix)
+{
+  GtkRenderOperationBackground *oper = GTK_RENDER_OPERATION_BACKGROUND (operation);
+
+  cairo_matrix_init_translate (matrix, oper->x, oper->y);
+}
+
+static char *
+gtk_render_operation_background_describe (GtkRenderOperation *operation)
+{
+  return g_strdup ("CSS background");
+}
+
+static void
+gtk_render_operation_background_draw (GtkRenderOperation *operation,
+                                      cairo_t            *cr)
+{
+  GtkRenderOperationBackground *oper = GTK_RENDER_OPERATION_BACKGROUND (operation);
+
+  gtk_css_style_render_background (oper->style,
+                                   cr,
+                                   0, 0, 
+                                   oper->width,
+                                   oper->height,
+                                   oper->junction);
+}
+
+static void
+gtk_render_operation_background_finalize (GObject *object)
+{
+  GtkRenderOperationBackground *oper = GTK_RENDER_OPERATION_BACKGROUND (object);
+
+  g_object_unref (oper->style);
+
+  G_OBJECT_CLASS (gtk_render_operation_background_parent_class)->finalize (object);
+}
+
+static void
+gtk_render_operation_background_class_init (GtkRenderOperationBackgroundClass *klass)
+{
+  GtkRenderOperationClass *operation_class = GTK_RENDER_OPERATION_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gtk_render_operation_background_finalize;
+
+  operation_class->get_clip = gtk_render_operation_background_get_clip;
+  operation_class->get_matrix = gtk_render_operation_background_get_matrix;
+  operation_class->describe = gtk_render_operation_background_describe;
+  operation_class->draw = gtk_render_operation_background_draw;
+}
+
+static void
+gtk_render_operation_background_init (GtkRenderOperationBackground *image)
+{
+}
+
+GtkRenderOperation *
+gtk_render_operation_background_new (GtkCssStyle      *style,
+                                     double            x,
+                                     double            y,
+                                     double            width,
+                                     double            height,
+                                     GtkJunctionSides  junction)
+{
+  GtkRenderOperationBackground *result;
+
+  g_return_val_if_fail (GTK_IS_CSS_STYLE (style), NULL);
+
+  result = g_object_new (GTK_TYPE_RENDER_OPERATION_BACKGROUND, NULL);
+  
+  result->style = g_object_ref (style);
+  result->x = x;
+  result->y = y;
+  result->width = width;
+  result->height = height;
+  result->junction = junction;
+ 
+  return GTK_RENDER_OPERATION (result);
+}
+
diff --git a/gtk/inspector/gtkrenderoperationbackground.h b/gtk/inspector/gtkrenderoperationbackground.h
new file mode 100644
index 0000000..c5da57a
--- /dev/null
+++ b/gtk/inspector/gtkrenderoperationbackground.h
@@ -0,0 +1,67 @@
+/*
+ * 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_RENDER_OPERATION_BACKGROUND_PRIVATE_H__
+#define __GTK_RENDER_OPERATION_BACKGROUND_PRIVATE_H__
+
+#include "gtkrenderoperation.h"
+
+#include "gtkcsstypesprivate.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_RENDER_OPERATION_BACKGROUND           (gtk_render_operation_background_get_type ())
+#define GTK_RENDER_OPERATION_BACKGROUND(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, 
GTK_TYPE_RENDER_OPERATION_BACKGROUND, GtkRenderOperationBackground))
+#define GTK_RENDER_OPERATION_BACKGROUND_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, 
GTK_TYPE_RENDER_OPERATION_BACKGROUND, GtkRenderOperationBackgroundClass))
+#define GTK_IS_RENDER_OPERATION_BACKGROUND(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, 
GTK_TYPE_RENDER_OPERATION_BACKGROUND))
+#define GTK_IS_RENDER_OPERATION_BACKGROUND_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, 
GTK_TYPE_RENDER_OPERATION_BACKGROUND))
+#define GTK_RENDER_OPERATION_BACKGROUND_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), 
GTK_TYPE_RENDER_OPERATION_BACKGROUND, GtkRenderOperationBackgroundClass))
+
+typedef struct _GtkRenderOperationBackground           GtkRenderOperationBackground;
+typedef struct _GtkRenderOperationBackgroundClass      GtkRenderOperationBackgroundClass;
+
+struct _GtkRenderOperationBackground
+{
+  GtkRenderOperation parent;
+  
+  GtkCssStyle      *style;
+  double            x;
+  double            y;
+  double            width;
+  double            height;
+  GtkJunctionSides  junction;
+};
+
+struct _GtkRenderOperationBackgroundClass
+{
+  GtkRenderOperationClass parent_class;
+};
+
+GType                   gtk_render_operation_background_get_type     (void) G_GNUC_CONST;
+
+GtkRenderOperation *    gtk_render_operation_background_new          (GtkCssStyle            *style,
+                                                                      double                  x,
+                                                                      double                  y,
+                                                                      double                  width,
+                                                                      double                  height,
+                                                                      GtkJunctionSides        junction);
+
+G_END_DECLS
+
+#endif /* __GTK_RENDER_OPERATION_BACKGROUND_PRIVATE_H__ */
diff --git a/gtk/inspector/recordingrenderops.c b/gtk/inspector/recordingrenderops.c
index 02a9fa4..d3ad898 100644
--- a/gtk/inspector/recordingrenderops.c
+++ b/gtk/inspector/recordingrenderops.c
@@ -21,6 +21,7 @@
 
 #include "recordingrenderops.h"
 
+#include "gtkrenderoperationbackground.h"
 #include "gtkrenderoperationcairo.h"
 #include "gtkrenderoperationwidget.h"
 #include "gtkwidget.h"
@@ -99,6 +100,26 @@ gtk_recording_render_ops_save_snapshot (GtkRecordingRenderOps *record,
   cairo_restore (cr);
 }
 
+static void
+gtk_recording_render_ops_draw_background (GtkRenderOps     *ops,
+                                          GtkCssStyle      *style,
+                                          cairo_t          *cr,
+                                          gdouble           x,
+                                          gdouble           y,
+                                          gdouble           width,
+                                          gdouble           height,
+                                          GtkJunctionSides  junction)
+{
+  GtkRecordingRenderOps *record = GTK_RECORDING_RENDER_OPS (ops);
+  GtkRenderOperation *oper;
+
+  gtk_recording_render_ops_save_snapshot (record, cr);
+
+  oper = gtk_render_operation_background_new (style, x, y, width, height, junction);
+  gtk_render_operation_widget_add_operation (record->widgets->data, oper);
+  g_object_unref (oper);
+}
+
 static cairo_t *
 gtk_recording_render_ops_begin_draw_widget (GtkRenderOps *ops,
                                             GtkWidget    *widget,
@@ -151,6 +172,7 @@ gtk_recording_render_ops_class_init (GtkRecordingRenderOpsClass *klass)
 
   ops_class->begin_draw_widget = gtk_recording_render_ops_begin_draw_widget;
   ops_class->end_draw_widget = gtk_recording_render_ops_end_draw_widget;
+  ops_class->draw_background = gtk_recording_render_ops_draw_background;
 }
 
 static void