[gnome-photos/wip/rishi/edit-mode: 9/26] gegl-gtk-view-helper: Remove the processor

[Debarshi Ray <debarshir src gnome org>]

commit 73b108dabe3def4d2105f35adee7a3e13b10aa33
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Jan 29 19:25:58 2015 +0100

    gegl-gtk-view-helper: Remove the processor
    
    We are already processing the graph inside BaseItem, and doing so
    inside the widget was unnecessary. It will actually cause problems
    when we add GEGL operations to our pipeline because two different
    processors will try to process the same graph simultaneously.

 src/gegl-gtk-view-helper.c |  119 --------------------------------------------
 src/gegl-gtk-view-helper.h |    5 --
 2 files changed, 0 insertions(+), 124 deletions(-)
---
diff --git a/src/gegl-gtk-view-helper.c b/src/gegl-gtk-view-helper.c
index 22bda9a..91f97db 100644
--- a/src/gegl-gtk-view-helper.c
+++ b/src/gegl-gtk-view-helper.c
@@ -42,8 +42,6 @@ static guint view_helper_signals[N_SIGNALS] = { 0 };
 static void
 finalize(GObject *gobject);
 void
-trigger_processing(ViewHelper *self, GeglRectangle roi);
-void
 trigger_redraw(ViewHelper *self, GeglRectangle *redraw_rect);
 
 
@@ -87,11 +85,6 @@ view_helper_init(ViewHelper *self)
     self->autoscale_policy = GEGL_GTK_VIEW_AUTOSCALE_CONTENT;
     self->block = FALSE;
 
-    self->monitor_id  = 0;
-    self->processor = NULL;
-    self->processing_queue = g_queue_new();
-    self->currently_processed_rect = NULL;
-
     self->widget_allocation = invalid_gdkrect;
 }
 
@@ -100,22 +93,8 @@ finalize(GObject *gobject)
 {
     ViewHelper *self = VIEW_HELPER(gobject);
 
-    if (self->monitor_id) {
-        g_source_remove(self->monitor_id);
-        self->monitor_id = 0;
-    }
-
     if (self->node)
         g_object_unref(self->node);
-
-    if (self->processor)
-        g_object_unref(self->processor);
-
-    g_queue_free_full(self->processing_queue, g_free);
-
-    if (self->currently_processed_rect) {
-        g_free(self->currently_processed_rect);
-    }
 }
 
 /* Transform a rectangle from model to view coordinates. */
@@ -164,55 +143,6 @@ update_autoscale(ViewHelper *self)
 
 }
 
-static void
-invalidated_event(GeglNode      *node,
-                  GeglRectangle *rect,
-                  ViewHelper    *self)
-{
-    trigger_processing(self, *rect);
-}
-
-static gboolean
-task_monitor(ViewHelper *self)
-{
-    gboolean processing_done;
-
-    if (!self->processor || !self->node) {
-        return FALSE;
-    }
-
-    // PERFORMANCE: combine all the rects added to the queue during a single
-    // iteration of the main loop somehow
-
-    if (!self->currently_processed_rect) {
-
-        if (g_queue_is_empty(self->processing_queue)) {
-            // Unregister worker
-            self->monitor_id = 0;
-            return FALSE;
-        }
-        else {
-            // Fetch next rect to process
-            self->currently_processed_rect = (GeglRectangle *)g_queue_pop_tail(self->processing_queue);
-            g_assert(self->currently_processed_rect);
-            gegl_processor_set_rectangle(self->processor, self->currently_processed_rect);
-        }
-    }
-
-    processing_done = !gegl_processor_work(self->processor, NULL);
-
-    if (processing_done) {
-        // Go to next region
-        if (self->currently_processed_rect) {
-            g_free(self->currently_processed_rect);
-        }
-        self->currently_processed_rect = NULL;
-    }
-
-    return TRUE;
-}
-
-
 /* When the GeglNode has been computed,
  * find out if the size of the vie changed and
  * emit the "size-changed" signal to notify view
@@ -295,43 +225,6 @@ view_helper_set_allocation(ViewHelper *self, GdkRectangle *allocation)
     update_autoscale(self);
 }
 
-/* Trigger processing of the GeglNode */
-void
-trigger_processing(ViewHelper *self, GeglRectangle roi)
-{
-    GeglRectangle *rect;
-
-    //GeglRectangle    roi;
-
-    // PERFORMANCE: determine the area that the view widget is interested in,
-    // and calculate the intersection with the invalidated rect
-    // and only pass this value as the ROI
-    // Would then also have to follow changes in view transformation
-
-    if (!self->node)
-        return;
-
-//    roi.x = self->x / self->scale;
-//    roi.y = self->y / self->scale;
-
-//    roi.width = ceil(self->widget_allocation.width / self->scale + 1);
-//    roi.height = ceil(self->widget_allocation.height / self->scale + 1);
-
-    if (self->monitor_id == 0) {
-        self->monitor_id = g_idle_add_full(G_PRIORITY_LOW,
-                                           (GSourceFunc) task_monitor, self,
-                                           NULL);
-    }
-
-    // Add the invalidated region to the dirty
-    rect = g_new(GeglRectangle, 1);
-    rect->x = roi.x;
-    rect->y = roi.y;
-    rect->width = roi.width;
-    rect->height = roi.height;
-    g_queue_push_head(self->processing_queue, rect);
-}
-
 void
 trigger_redraw(ViewHelper *self, GeglRectangle *redraw_rect)
 {
@@ -355,26 +248,14 @@ view_helper_set_node(ViewHelper *self, GeglNode *node)
         g_object_unref(self->node);
 
     if (node) {
-        GeglRectangle bbox;
-
         g_object_ref(node);
         self->node = node;
 
         g_signal_connect_object(self->node, "computed",
                                 G_CALLBACK(computed_event),
                                 self, 0);
-        g_signal_connect_object(self->node, "invalidated",
-                                G_CALLBACK(invalidated_event),
-                                self, 0);
-
-        if (self->processor)
-            g_object_unref(self->processor);
-
-        bbox = gegl_node_get_bounding_box(self->node);
-        self->processor = gegl_node_new_processor(self->node, &bbox);
 
         update_autoscale(self);
-        trigger_processing(self, bbox);
 
     } else
         self->node = NULL;
diff --git a/src/gegl-gtk-view-helper.h b/src/gegl-gtk-view-helper.h
index 022ac5e..fcf0e00 100644
--- a/src/gegl-gtk-view-helper.h
+++ b/src/gegl-gtk-view-helper.h
@@ -48,11 +48,6 @@ struct _ViewHelper {
     gboolean       block;    /* blocking render */
     GeglGtkViewAutoscale autoscale_policy;
 
-    guint          monitor_id;
-    GeglProcessor *processor;
-    GQueue        *processing_queue; /* Queue of rectangles that needs to be processed */
-    GeglRectangle *currently_processed_rect;
-
     GdkRectangle   widget_allocation; /* The allocated size of the widget */
 };