Merge branch 'master' of git.ucc.asn.au:ipdf/code

[ipdf/code.git] / src / view.cpp

diff --git a/src/view.cpp b/src/view.cpp
index 4425ebe..969bbb3 100644 (file)
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -7,10 +7,34 @@ 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;