Bug 1129 - NEWT MonitorDevice's physical size on Windows must be read via EDID

On Windows, one must read the monitor's EDID data as stored in the registry,
no 'simple' API works otherwise.

The proper way requires utilizing the Windows Setup-API.

This code is inspired by Ofek Shilon's code and blog post:
   <http://ofekshilon.com/2014/06/19/reading-specific-monitor-dimensions/>
   See: function 'NewtEDID_GetMonitorSizeFromEDIDByModelName'

In contrast to Ofek's code, function 'NewtEDID_GetMonitorSizeFromEDIDByDevice'
uses the proper link from
     DISPLAY_DEVICE.DeviceID -> SP_DEVICE_INTERFACE_DETAIL_DATA.DevicePath,
where DISPLAY_DEVICE.DeviceID is the monitor's enumeration via:
     EnumDisplayDevices(adapterName, monitor_idx, &ddMon, EDD_GET_DEVICE_INTERFACE_NAME);
Hence the path to the registry-entry is well determined instead of just comparing
the monitor's model name.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index d638b3ae5..e15f52730 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -1004,6 +1004,11 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
         glWindow.addGLEventListener(new GLEventListener() {
             @Override
             public void init(final GLAutoDrawable drawable) {
+                final MonitorDevice monitor = glWindow.getMainMonitor();
+                System.err.println("Main Monitor: "+monitor);
+                final float[] pixelPerMM = monitor.getPixelsPerMM(new float[2]);
+                System.err.println("    pp/mm ["+pixelPerMM[0]+", "+pixelPerMM[1]+"]");
+                System.err.println("    pp/in ["+pixelPerMM[0]*25.4f+", "+pixelPerMM[1]*25.4f+"]");
                 final GL gl = drawable.getGL();
                 System.err.println(JoglVersion.getGLInfo(gl, null));
                 System.err.println("Requested: "+drawable.getNativeSurface().getGraphicsConfiguration().getRequestedCapabilities());