X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fview.cpp;h=80f49861b116db216258cf96e9349370704460eb;hp=ed62704fd66b5864c071d769973b7aeb72fe43d4;hb=a269b3e29535918a390f448829a3459e4853425b;hpb=32cd67ec48271c176eba218e082fcf5824aa8e6c

diff --git a/src/view.cpp b/src/view.cpp
index ed62704..80f4986 100644
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -5,6 +5,36 @@
 using namespace IPDF;
 using namespace std;
 
+void View::Translate(Real x, Real y)
+{
+	x *= m_bounds.w;
+	y *= m_bounds.h;
+	m_bounds.x += x;
+	m_bounds.y += y;
+}
+
+void View::ScaleAroundPoint(Real x, Real y, Real scaleAmt)
+{
+	// Convert to local coords.
+	x *= m_bounds.w;
+	y *= m_bounds.h;
+	x += m_bounds.x;
+	y += m_bounds.y;
+	
+	Debug("Mouse wheel event %f %f %f\n", Float(x), Float(y), Float(scaleAmt));
+	
+	Real top = y - m_bounds.y;
+	Real left = x - m_bounds.x;
+	
+	top *= scaleAmt;
+	left *= scaleAmt;
+	
+	m_bounds.x = x - left;
+	m_bounds.y = y - top;
+	m_bounds.w *= scaleAmt;
+	m_bounds.h *= scaleAmt;
+}
+
 void View::Render()
 {
 	static bool debug_output_done = false;