Improvements related to ColorScale and screenshots.

* ColorScale: now a pointer whenever needed. main() takes care of
  updating extents
* New class DivergentColorScale: works specifically for divergent
  scales, always has 3 colors as input: negative values, 0, positive
  values
* ManipulationHandler: ProjectionHistory no longer needed

1 files changed, 23 insertions, 15 deletions

diff --git a/main_view.qml b/main_view.qml
index 6cd54ae..900969e 100644
--- a/main_view.qml
+++ b/main_view.qml
@@ -474,26 +474,34 @@ ApplicationWindow {
             placeholderText: "Enter prefix"
         }
 
-        onAccepted: {
-            var prefix = prefixTextField.text;
-            if (prefix.length == 0) {
-                prefix = "screenshot";
-            }
+        Timer {
+            id: screenshotTimer
+            interval: 500
+            running: false
+            repeat: false
+            onTriggered: {
+                var prefix = prefixTextField.text;
+                if (prefix.length == 0) {
+                    prefix = "screenshot";
+                }
 
-            mainView.grabToImage(function(result) {
-                result.saveToFile(prefix + "-main.png");
-            });
+                mainView.grabToImage(function(result) {
+                    result.saveToFile(prefix + "-main.png");
+                });
 
-            bottomViewCP.grabToImage(function(result) {
-                result.saveToFile(prefix + "-bottom-cp.png");
-            });
+                bottomViewCP.grabToImage(function(result) {
+                    result.saveToFile(prefix + "-bottom-cp.png");
+                });
 
-            bottomViewRP.grabToImage(function(result) {
-                result.saveToFile(prefix + "-bottom-rp.png");
-            });
+                bottomViewRP.grabToImage(function(result) {
+                    result.saveToFile(prefix + "-bottom-rp.png");
+                });
 
-            prefixTextField.text = "";
+                prefixTextField.text = "";
+            }
         }
+
+        onAccepted: screenshotTimer.start()
     }
 
     Action {