[gnome-photos/wip/edit: 4/4] experiments

[Debarshi Ray <debarshir src gnome org>]

commit 56173f7164471d9250e0383af35c432f16a35e8a
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Feb 3 10:35:09 2014 +0100

    experiments

 src/photos-base-item.c           |   31 ++++++++++++++++++++++++++-----
 src/photos-base-item.h           |    6 +++++-
 src/photos-icons.h               |    3 +++
 src/photos-preview-nav-buttons.c |   32 ++++++++++++++++++++++++++++++++
 src/photos-preview-view.c        |    6 ++++++
 5 files changed, 72 insertions(+), 6 deletions(-)
---
diff --git a/src/photos-base-item.c b/src/photos-base-item.c
index 81d598d..df0858a 100644
--- a/src/photos-base-item.c
+++ b/src/photos-base-item.c
@@ -36,6 +36,7 @@
 #include "photos-collection-icon-watcher.h"
 #include "photos-delete-item-job.h"
 #include "photos-icons.h"
+#include "photos-pipeline.h"
 #include "photos-print-operation.h"
 #include "photos-query.h"
 #include "photos-selection-controller.h"
@@ -48,13 +49,14 @@ struct _PhotosBaseItemPrivate
   GdkPixbuf *icon;
   GdkPixbuf *pristine_icon;
   GeglNode *graph;
-  GeglNode *node;
+  GeglNode *load;
   GeglRectangle bbox;
   GMutex mutex_download;
   GMutex mutex;
   GQuark equipment;
   GQuark flash;
   PhotosCollectionIconWatcher *watcher;
+  PhotosPipeline *pipeline;
   PhotosSelectionController *sel_cntrlr;
   TrackerSparqlCursor *cursor;
   gboolean collection;
@@ -554,9 +556,14 @@ static GeglNode *
 photos_base_item_load (PhotosBaseItem *self, GCancellable *cancellable, GError **error)
 {
   PhotosBaseItemPrivate *priv = self->priv;
+  GeglNode *edit;
+  GeglNode *input;
+  GeglNode *output = NULL;
   GeglNode *ret_val = NULL;
   gchar *path = NULL;
 
+  edit = photos_pipeline_get_graph (priv->pipeline);
+
   if (priv->graph == NULL)
     {
       path = photos_base_item_download (self, cancellable, error);
@@ -564,15 +571,20 @@ photos_base_item_load (PhotosBaseItem *self, GCancellable *cancellable, GError *
         goto out;
 
       priv->graph = gegl_node_new ();
-      priv->node = gegl_node_new_child (priv->graph,
+      priv->load = gegl_node_new_child (priv->graph,
                                         "operation", "gegl:load",
                                         "path", path,
                                         NULL);
+      priv->bbox = gegl_node_get_bounding_box (priv->load);
+
+      gegl_node_add_child (priv->graph, edit);
+      input = gegl_node_get_input_proxy (edit, "input");
+      gegl_node_link (priv->load, input);
     }
 
-  gegl_node_process (priv->node);
-  priv->bbox = gegl_node_get_bounding_box (priv->node);
-  ret_val = g_object_ref (priv->node);
+  output = gegl_node_get_output_proxy (edit, "output");
+  gegl_node_process (output);
+  ret_val = g_object_ref (output);
 
  out:
   g_free (path);
@@ -812,6 +824,7 @@ photos_base_item_dispose (GObject *object)
   g_clear_object (&priv->icon);
   g_clear_object (&priv->pristine_icon);
   g_clear_object (&priv->watcher);
+  g_clear_object (&priv->pipeline);
   g_clear_object (&priv->sel_cntrlr);
   g_clear_object (&priv->cursor);
 
@@ -895,6 +908,7 @@ photos_base_item_init (PhotosBaseItem *self)
   g_mutex_init (&priv->mutex_download);
   g_mutex_init (&priv->mutex);
 
+  priv->pipeline = photos_pipeline_new (self);
   priv->sel_cntrlr = photos_selection_controller_dup_singleton ();
 }
 
@@ -957,6 +971,13 @@ photos_base_item_class_init (PhotosBaseItemClass *class)
 }
 
 
+void
+photos_base_item_add_operation (PhotosBaseItem *self, PhotosOperation *operation)
+{
+  photos_pipeline_add_operation (self->priv->pipeline, operation);
+}
+
+
 gboolean
 photos_base_item_can_trash (PhotosBaseItem *self)
 {
diff --git a/src/photos-base-item.h b/src/photos-base-item.h
index f9325a2..e0e7bea 100644
--- a/src/photos-base-item.h
+++ b/src/photos-base-item.h
@@ -1,6 +1,6 @@
 /*
  * Photos - access, organize and share your photos on GNOME
- * Copyright © 2012, 2013 Red Hat, Inc.
+ * Copyright © 2012, 2013, 2014 Red Hat, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -30,6 +30,8 @@
 #include <glib-object.h>
 #include <gtk/gtk.h>
 
+#include "photos-operation.h"
+
 G_BEGIN_DECLS
 
 #define PHOTOS_TYPE_BASE_ITEM (photos_base_item_get_type ())
@@ -82,6 +84,8 @@ struct _PhotosBaseItemClass
 
 GType               photos_base_item_get_type           (void) G_GNUC_CONST;
 
+void                photos_base_item_add_operation      (PhotosBaseItem *self, PhotosOperation *operation);
+
 gboolean            photos_base_item_can_trash          (PhotosBaseItem *self);
 
 void                photos_base_item_destroy            (PhotosBaseItem *self);
diff --git a/src/photos-icons.h b/src/photos-icons.h
index 7fd01f0..6874db7 100644
--- a/src/photos-icons.h
+++ b/src/photos-icons.h
@@ -33,6 +33,9 @@ G_BEGIN_DECLS
 #define PHOTOS_ICON_GO_NEXT_SYMBOLIC "go-next-symbolic"
 #define PHOTOS_ICON_GO_PREVIOUS_SYMBOLIC "go-previous-symbolic"
 
+#define PHOTOS_ICON_OBJECT_ROTATE_LEFT_SYMBOLIC "object-rotate-left-symbolic"
+#define PHOTOS_ICON_OBJECT_ROTATE_RIGHT_SYMBOLIC "object-rotate-right-symbolic"
+
 #define PHOTOS_ICON_OBJECT_SELECT_SYMBOLIC "object-select-symbolic"
 
 #define PHOTOS_ICON_PHOTOS_SYMBOLIC "emblem-photos-symbolic"
diff --git a/src/photos-preview-nav-buttons.c b/src/photos-preview-nav-buttons.c
index f0c4e8c..d689c76 100644
--- a/src/photos-preview-nav-buttons.c
+++ b/src/photos-preview-nav-buttons.c
@@ -33,6 +33,7 @@
 #include "photos-item-manager.h"
 #include "photos-preview-model.h"
 #include "photos-preview-nav-buttons.h"
+#include "photos-rotate-left.h"
 #include "photos-view-model.h"
 
 
@@ -45,6 +46,8 @@ struct _PhotosPreviewNavButtonsPrivate
   GtkWidget *overlay;
   GtkWidget *prev_widget;
   GtkWidget *preview_view;
+  GtkWidget *rotate_left_button;
+  GtkWidget *rotate_right_button;
   GtkWidget *toolbar_widget;
   PhotosBaseManager *item_mngr;
   gboolean hover;
@@ -322,6 +325,19 @@ photos_preview_nav_buttons_prev_clicked (PhotosPreviewNavButtons *self)
 
 
 static void
+photos_preview_nav_buttons_rotate_left_clicked (PhotosPreviewNavButtons *self)
+{
+  PhotosBaseItem *item;
+  PhotosOperation *operation;
+
+  item = PHOTOS_BASE_ITEM (photos_base_manager_get_active_object (self->priv->item_mngr));
+  operation = photos_rotate_left_new ();
+  photos_base_item_add_operation (item, operation);
+  g_object_unref (operation);
+}
+
+
+static void
 photos_preview_nav_buttons_dispose (GObject *object)
 {
   PhotosPreviewNavButtons *self = PHOTOS_PREVIEW_NAV_BUTTONS (object);
@@ -444,6 +460,22 @@ photos_preview_nav_buttons_constructed (GObject *object)
                             G_CALLBACK (photos_preview_nav_buttons_leave_notify),
                             self);
 
+  priv->rotate_left_button = gd_header_simple_button_new ();
+  gd_header_button_set_label (GD_HEADER_BUTTON (priv->rotate_left_button), _("Rotate 90 degrees to the 
left"));
+  gd_header_button_set_symbolic_icon_name (GD_HEADER_BUTTON (priv->rotate_left_button),
+                                           PHOTOS_ICON_OBJECT_ROTATE_LEFT_SYMBOLIC);
+  gtk_action_bar_pack_start (GTK_ACTION_BAR (toolbar), priv->rotate_left_button);
+  g_signal_connect_swapped (priv->rotate_left_button,
+                            "clicked",
+                            G_CALLBACK (photos_preview_nav_buttons_rotate_left_clicked),
+                            self);
+
+  priv->rotate_right_button = gd_header_simple_button_new ();
+  gd_header_button_set_label (GD_HEADER_BUTTON (priv->rotate_right_button), _("Rotate 90 degrees to the 
right"));
+  gd_header_button_set_symbolic_icon_name (GD_HEADER_BUTTON (priv->rotate_right_button),
+                                           PHOTOS_ICON_OBJECT_ROTATE_RIGHT_SYMBOLIC);
+  gtk_action_bar_pack_start (GTK_ACTION_BAR (toolbar), priv->rotate_right_button);
+
   priv->favorite_button = gd_header_toggle_button_new ();
   gd_header_button_set_symbolic_icon_name (GD_HEADER_BUTTON (priv->favorite_button),
                                            PHOTOS_ICON_FAVORITE_SYMBOLIC);
diff --git a/src/photos-preview-view.c b/src/photos-preview-view.c
index 00e629b..79cd53d 100644
--- a/src/photos-preview-view.c
+++ b/src/photos-preview-view.c
@@ -268,6 +268,12 @@ photos_preview_view_set_node (PhotosPreviewView *self, GeglNode *node)
   gegl_gtk_view_set_node (GEGL_GTK_VIEW (priv->view), g_object_ref (priv->node));
   gtk_widget_queue_draw (priv->view);
 
+  g_signal_connect_swapped (priv->node, "computed", G_CALLBACK (gtk_widget_queue_draw), priv->view);
+  g_signal_connect_swapped (priv->node,
+                            "invalidated",
+                            G_CALLBACK (photos_preview_view_scale_and_align_image),
+                            self);
+
  out:
   photos_preview_nav_buttons_show (priv->nav_buttons);
 }