Screenshot using glReadPixels instead

[ipdf/code.git] / src / screen.h

diff --git a/src/screen.h b/src/screen.h
index c8acbcf..f5ae753 100644 (file)
--- a/src/screen.h
+++ b/src/screen.h
@@ -24,8 +24,8 @@ namespace IPDF
                void Present();
 
                // Get the current width/height of the window's viewport.
-               int ViewportWidth() { return m_viewport_width; }
-               int ViewportHeight() { return m_viewport_height; }
+               int ViewportWidth() const { return m_viewport_width; }
+               int ViewportHeight() const { return m_viewport_height; }
                
                // Handle mouse input.
                typedef std::function<void(int x, int y, int button, int wheel)> MouseHandler;