change Export to shift-P

Program.cs

@@ -622,6 +622,9 @@ public class Game : GameWindow {
 
     KeyboardState input = KeyboardState;
 
+    bool shiftIsDown = input.IsKeyDown(Keys.LeftShift) || input.IsKeyDown(Keys.RightShift);
+    bool ctrlIsDown = input.IsKeyDown(Keys.LeftControl) || input.IsKeyDown(Keys.RightControl);
+
     // FIXME: add a confirm dialog before closing. (Also for the window-close button.)
     // Close when Escape is pressed.
     if (input.IsKeyPressed(Keys.Escape)) {
@@ -687,7 +690,7 @@ public class Game : GameWindow {
       photoIndex -= 5;
     }
 
-    if (input.IsKeyPressed(Keys.X)) {
+    if (input.IsKeyPressed(Keys.P) && shiftIsDown) {
       ExportPhotos();
     }
 
@@ -728,8 +731,7 @@ public class Game : GameWindow {
     }
 
     if (rating >= 0) {
-      bool shifted = input.IsKeyDown(Keys.LeftShift) || input.IsKeyDown(Keys.RightShift);
-      if (shifted) {
+      if (shiftIsDown) {
         FilterByRating(rating);
       } else {
         if (photos.Count > 0) {