From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Thu, 31 Jan 2008 15:03:00 +0000 (+0000)
Subject: Ensure that the size we draw is a whole number of pixels in each dimension, and preve... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=536bceae2dd6a33168fb41511d5263b697d2d32f;p=synfig.git

Ensure that the size we draw is a whole number of pixels in each dimension, and prevent zooming out too far from creating canvases so small they contain no pixels at all.


git-svn-id: http://svn.voria.com/code@1537 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-studio/trunk/src/gtkmm/workarea.cpp b/synfig-studio/trunk/src/gtkmm/workarea.cpp
index 1b61346..72acd90 100644
--- a/synfig-studio/trunk/src/gtkmm/workarea.cpp
+++ b/synfig-studio/trunk/src/gtkmm/workarea.cpp
@@ -2256,6 +2256,13 @@ studio::WorkArea::async_update_preview()
 	int w=(int)(desc.get_w()*zoom);
 	int h=(int)(desc.get_h()*zoom);
 
+	// ensure that the size we draw is a whole number of pixels in each dimension
+	if (low_resolution)
+	{
+		if (w % low_res_pixel_size) w = (w/low_res_pixel_size+1)*low_res_pixel_size;
+		if (h % low_res_pixel_size) h = (h/low_res_pixel_size+1)*low_res_pixel_size;
+	}
+
 	// Setup the description parameters
 	desc.set_antialias(1);
 	desc.set_time(cur_time);