X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=src%2Fmain.h;h=234611920c903c43249126d898fcaaf0a4a17af5;hb=c0f947a6ce10a329eec81e4df820ac52f7ab371f;hp=ee8076aee26d7fb4d98f0b3f4c7083bfc948046e;hpb=42737c4c096f6469fb27e261806b48338a8f672f;p=ipdf%2Fcode.git

diff --git a/src/main.h b/src/main.h
index ee8076a..2346119 100644
--- a/src/main.h
+++ b/src/main.h
@@ -12,6 +12,36 @@ inline void MainLoop(Document & doc)
 {
 	View view(doc);
 	Screen scr;
+	scr.SetMouseHandler([&](int x, int y, int buttons, int wheel)
+	{
+		static bool oldButtonDown = false;
+		static int oldx, oldy;
+		if (buttons && !oldButtonDown)
+		{
+			// We're beginning a drag.
+			oldButtonDown = true;
+			oldx = x;
+			oldy = y;
+			scr.SetMouseCursor(Screen::CursorMove);
+		}
+		if (buttons)
+		{
+			view.Translate(Real(oldx-x)/Real(scr.ViewportWidth()), Real(oldy-y)/Real(scr.ViewportHeight()));
+		}
+		else
+		{
+			oldButtonDown = false;
+			scr.SetMouseCursor(Screen::CursorArrow);
+		}
+		oldx = x;
+		oldy = y;
+		
+		if (wheel)
+		{
+			view.ScaleAroundPoint(Real(x)/Real(scr.ViewportWidth()),Real(y)/Real(scr.ViewportHeight()), expf(-wheel/20.f));
+		}
+	}
+	);
 	while (scr.PumpEvents())
 	{
 		view.Render();