remove memory boundries on bitmap renderer, optimize memory usage

[inkscape.git] / src / extension / internal / cairo-renderer.cpp

diff --git a/src/extension/internal/cairo-renderer.cpp b/src/extension/internal/cairo-renderer.cpp
index 67f9354d8cac97085e57fc87b6f18d90cbc29df8..bc3c6c4848b6c9fbd795e4e8cb9c2a5baae0af89 100644 (file)
--- a/src/extension/internal/cairo-renderer.cpp
+++ b/src/extension/internal/cairo-renderer.cpp
@@ -452,8 +452,23 @@ static void sp_asbitmap_render(SPItem *item, CairoRenderContext *ctx)
     Geom::OptRect bbox = 
            item->getBounds(item->i2d_affine(), SPItem::RENDERING_BBOX);
 
-    if (!bbox) // no bbox, e.g. empty group
+    // no bbox, e.g. empty group
+       if (!bbox) {
         return;
+    }
+
+    Geom::Rect docrect(Geom::Rect(Geom::Point(0, 0), SP_OBJECT(item)->document->getDimensions()));
+    Geom::Rect bboxrect(Geom::Rect(Geom::Point(bbox->min()[Geom::X], bbox->min()[Geom::Y]), Geom::Point(bbox->max()[Geom::X], bbox->max()[Geom::Y])));
+
+    Geom::OptRect _bbox = Geom::intersect(docrect, bboxrect);
+
+       // assign the object dimension clipped on the document, no need to draw on area not on canvas
+    bbox = _bbox;
+
+    // no bbox, e.g. empty group
+    if (!bbox) {
+        return;
+    }
 
     // The width and height of the bitmap in pixels
     unsigned width = (unsigned) floor ((bbox->max()[Geom::X] - bbox->min()[Geom::X]) * (res / PX_PER_IN));