[gnome-boxes] Remove all thumbnail prelighting code

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit a2790ca6be6fcd4cce020fab1a0ccaad05205bd9
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Thu Jul 3 00:34:22 2014 +0100

    Remove all thumbnail prelighting code
    
    Turns out that prelighting just works out of the box by setting
    Gtk.CellRendererPixbuf.follow-state property to true.
    
    This patch reverts these patches:
    
    2531ed10bd8d326263b75671882d296d367f87c9 "machine: Fix prelight for non-running boxes".
    fff165f47924eee0d1d375d3373f9fbef439c4fa "collection-view: Prelight for running machines"
    d3f79d6fb5da1bb5966e8aaca6ea63e34f0c4a44 "collection-view: No prelight after mouse leaves view"
    2b9d1314c0739a7a2f4737ef058bd7a5b4c0fc7b "collection-view: Implement prelight on mouse hover"
    cf9e16f62ca729bc754626655c3040184aa5fa44 "machine: Make origin_pixbuf a public property"
    
    Conflicts:
        src/collection-view.vala
        src/machine.vala

 src/collection-view.vala |   47 +---------------------------------------------
 src/machine.vala         |   36 +++-------------------------------
 2 files changed, 5 insertions(+), 78 deletions(-)
---
diff --git a/src/collection-view.vala b/src/collection-view.vala
index 3cca7c6..175264c 100644
--- a/src/collection-view.vala
+++ b/src/collection-view.vala
@@ -32,7 +32,6 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.UI {
 
     private Gtk.ListStore store;
     private Gtk.TreeModelFilter model_filter;
-    private Gtk.TreeIter? prelight_iter; // Iter of item under the cursor
 
     construct {
         category = new Category (_("New and Recent"), Category.Kind.NEW);
@@ -57,7 +56,7 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.UI {
         store.get (iter, ModelColumns.ITEM, out item);
         Machine machine = item as Machine;
         return_if_fail (machine != null);
-        var pixbuf = (iter == prelight_iter)? machine.prelight_pixbuf : machine.pixbuf;
+        var pixbuf = machine.pixbuf;
 
         if ("favorite" in machine.config.categories)
             emblem_icons += create_symbolic_emblem ("emblem-favorite");
@@ -279,11 +278,6 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.UI {
         selection_mode_request.connect (() => {
             App.app.selection_mode = true;
         });
-        var icon_view = get_generic_view () as Gtk.IconView;
-        icon_view.add_events (Gdk.EventMask.LEAVE_NOTIFY_MASK);
-        icon_view.motion_notify_event.connect (on_motion_notify);
-        icon_view.leave_notify_event.connect (on_leave_notify);
-
         show_all ();
     }
 
@@ -343,43 +337,4 @@ private class Boxes.CollectionView: Gd.MainView, Boxes.UI {
         });
         machine.set_data<uint> ("activity_timeout", activity_timeout);
     }
-
-    private bool on_motion_notify (Gtk.Widget widget,
-                                   Gdk.Event  event) {
-        var icon_view = widget as Gtk.IconView;
-        var motion = (Gdk.EventMotion) event;
-        int x, y;
-
-        icon_view.convert_widget_to_bin_window_coords ((int) motion.x, (int) motion.y,
-                                                       out x, out y);
-        var path = icon_view.get_path_at_pos (x, y);
-        if (path != null) {
-            Gtk.TreeIter filter_iter;
-
-            model_filter.get_iter (out filter_iter, path);
-            model_filter.convert_iter_to_child_iter (out prelight_iter, filter_iter);
-        } else {
-            prelight_iter = null;
-        }
-
-        store.foreach ((store, path, iter) => {
-            update_screenshot (iter);
-
-            return false;
-        });
-
-        return false;
-    }
-
-    private bool on_leave_notify (Gtk.Widget widget,
-                                  Gdk.Event  event) {
-        if (prelight_iter == null)
-            return false;
-
-        var iter = prelight_iter;
-        prelight_iter = null;
-        update_screenshot (iter);
-
-        return false;
-    }
 }
diff --git a/src/machine.vala b/src/machine.vala
index f3cd7e8..a444f42 100644
--- a/src/machine.vala
+++ b/src/machine.vala
@@ -34,10 +34,6 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
 
     public Cancellable connecting_cancellable { get; protected set; }
 
-    // The current screenshot without running status applied
-    private Gdk.Pixbuf? orig_pixbuf;
-    public Gdk.Pixbuf? prelight_pixbuf { get; private set; }
-
     public enum MachineState {
         UNKNOWN,
         STOPPED,
@@ -54,6 +50,9 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
         IGNORE_SAVED_STATE
     }
 
+    // The current screenshot without running status applied
+    private Gdk.Pixbuf? orig_pixbuf;
+
     private MachineState _state;
     public MachineState state { get { return _state; }
         protected set {
@@ -63,10 +62,8 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
                 set_screenshot (null, false);
             else {
                 // Update existing screenshot based on machine status
-                if (orig_pixbuf != null) {
+                if (orig_pixbuf != null)
                     pixbuf = draw_vm (orig_pixbuf, SCREENSHOT_WIDTH, SCREENSHOT_HEIGHT);
-                    prelight_pixbuf = draw_prelighted_vm (orig_pixbuf, SCREENSHOT_WIDTH, SCREENSHOT_HEIGHT);
-                }
             }
 
             // If the display is active and the VM goes to a non-running
@@ -371,7 +368,6 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
 
             orig_pixbuf = small_screenshot;
             pixbuf = draw_vm (small_screenshot, SCREENSHOT_WIDTH, SCREENSHOT_HEIGHT);
-            prelight_pixbuf = draw_prelighted_vm (small_screenshot, SCREENSHOT_WIDTH, SCREENSHOT_HEIGHT);
             if (App.app.current_item == this)
                 App.window.sidebar.screenshot.set_from_pixbuf (pixbuf);
             if (save)
@@ -380,7 +376,6 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
         } else {
             orig_pixbuf = null;
             pixbuf = draw_stopped_vm ();
-            prelight_pixbuf = draw_prelighted_vm (pixbuf, pixbuf.width, pixbuf.height);
         }
     }
 
@@ -440,29 +435,6 @@ private abstract class Boxes.Machine: Boxes.CollectionItem, Boxes.IPropertiesPro
         return Gdk.pixbuf_get_from_surface (surface, 0, 0, width, height);
     }
 
-    private Gdk.Pixbuf draw_prelighted_vm (Gdk.Pixbuf pixbuf, int width, int height) {
-        var surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, width, height);
-        var context = new Cairo.Context (surface);
-
-        var pw = pixbuf.get_width ();
-        var ph = pixbuf.get_height ();
-        var x = (width - pw) / 2;
-        var y = (height - ph) / 2;
-
-        context.rectangle (x, y, pw, ph);
-        context.clip ();
-
-        Gdk.cairo_set_source_pixbuf (context, pixbuf, x, y);
-        context.set_operator (Cairo.Operator.SOURCE);
-        context.paint ();
-
-        context.set_source_rgba (0.2, 0.2, 0.2, 0.2);
-        context.set_operator (Cairo.Operator.SCREEN);
-        context.paint ();
-
-        return Gdk.pixbuf_get_from_surface (surface, 0, 0, width, height);
-    }
-
     private static Gdk.Pixbuf draw_stopped_vm (int width = SCREENSHOT_WIDTH,
                                                int height = SCREENSHOT_HEIGHT) {
         var surface = new Cairo.ImageSurface (Cairo.Format.RGB24, width, height);