Implement "wipe" effect.

2008-01-04  Carlos Garnacho  <carlosg@gnome.org>

        * shell/ev-transition-animation.c (ev_transition_animation_wipe)
        (ev_transition_animation_paint): Implement "wipe" effect.

svn path=/trunk/; revision=2804

diff --git a/ChangeLog b/ChangeLog
index f54aa8e06f984f17f9abe49159b52372ea847d81..ab96d653ccf497325e8b349413321897b487d061 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-04  Carlos Garnacho  <carlosg@gnome.org>
+
+       * shell/ev-transition-animation.c (ev_transition_animation_wipe)
+       (ev_transition_animation_paint): Implement "wipe" effect.
+
 2008-01-04  Carlos Garnacho  <carlosg@gnome.org>
 
        * shell/ev-transition-animation.c (ev_transition_animation_box)

diff --git a/shell/ev-transition-animation.c b/shell/ev-transition-animation.c
index 6a4006b27df5170ae5eae7db03b32235dab288ce..028a36c9b0254ac504f87db0e8c17bf1e6efa9a6 100644 (file)
--- a/shell/ev-transition-animation.c
+++ b/shell/ev-transition-animation.c
@@ -370,6 +370,60 @@ ev_transition_animation_box (cairo_t               *cr,
        }
 }
 
+static void
+ev_transition_animation_wipe (cairo_t               *cr,
+                             EvTransitionAnimation *animation,
+                             EvTransitionEffect    *effect,
+                             gdouble                progress,
+                             GdkRectangle           page_area)
+{
+       EvTransitionAnimationPriv *priv;
+       gint width, height;
+       gint angle;
+
+       priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation);
+       width = page_area.width;
+       height = page_area.height;
+
+       g_object_get (effect,
+                     "angle", &angle,
+                     NULL);
+
+       paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area);
+
+       if (angle == 0) {
+               /* left to right */
+               cairo_rectangle (cr,
+                                0, 0,
+                                width * progress,
+                                height);
+       } else if (angle <= 90) {
+               /* bottom to top */
+               cairo_rectangle (cr,
+                                0,
+                                height * (1 - progress),
+                                width,
+                                height * progress);
+       } else if (angle <= 180) {
+               /* right to left */
+               cairo_rectangle (cr,
+                                width * (1 - progress),
+                                0,
+                                width * progress,
+                                height);
+       } else if (angle <= 270) {
+               /* top to bottom */
+               cairo_rectangle (cr,
+                                0, 0,
+                                width,
+                                height * progress);
+       }
+
+       cairo_clip (cr);
+
+       paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area);
+}
+
 void
 ev_transition_animation_paint (EvTransitionAnimation *animation,
                               cairo_t               *cr,
@@ -405,6 +459,9 @@ ev_transition_animation_paint (EvTransitionAnimation *animation,
        case EV_TRANSITION_EFFECT_BOX:
                ev_transition_animation_box (cr, animation, priv->effect, progress, page_area);
                break;
+       case EV_TRANSITION_EFFECT_WIPE:
+               ev_transition_animation_wipe (cr, animation, priv->effect, progress, page_area);
+               break;
        default: {
                GEnumValue *enum_value;