Changeset 51:bc776d590040 in xplra for src

Timestamp:

02/16/13 10:31:37 (12 years ago)

Author:

István Váradi <ivaradi@…>

Branch:

default

Phase:

public

Message:

Added scrolling the message if needed

Location:

src/plugin/src/xplra

Files:

• MessageWindow.cc (modified) (3 diffs)
• MessageWindow.h (modified) (3 diffs)

src/plugin/src/xplra/MessageWindow.cc

@@ -79 +79 @@
     maxMessageLength(0),
     showForced(false),
+    showTime(0.0),
     hideTime(0.0),
     clickedX(-1),
@@ -146 +147 @@
     float d = getNewMessage(displayedMessage);
     if (d>0.0) {
+        showTime = now;
         hideTime = now + d;
     }
@@ -156 +158 @@
         XPLMDrawTranslucentDarkBox(left, top, right, bottom);
         if (hideTime!=0.0) {
-
-            string dm(displayedMessage, 0, maxMessageLength);
+            size_t offset = 0;
+            if  (displayedMessage.size()>maxMessageLength &&
+                 now > (showTime + scrollTimeout) )
+            {
+                offset = (now - showTime - scrollTimeout) /
+                    scrollInterval;
+                offset = min(offset,
+                             displayedMessage.size() - maxMessageLength);
+            }
+
+            string dm(displayedMessage, offset, maxMessageLength);
 
             XPLMDrawString(colour,

src/plugin/src/xplra/MessageWindow.h

@@ -94 +94 @@
     static const int baseLineSize = 2;
 
+    /**
+     * The amount of time in seconds after which the message is
+     * started to be scrolled, if it should be scrolled.
+     */
+    static const float scrollTimeout = 1.0;
+
+    /**
+     * The amount of time in seconds between each character step.
+     */
+    static const float scrollInterval = 0.1;
+
 private:
     /**
@@ -143 +154 @@
      * The maximal message length.
      */
-    int maxMessageLength;
+    size_t maxMessageLength;
 
     /**
@@ -154 +165 @@
      */
     std::string displayedMessage;
+
+    /**
+     * The time the current message was shown.
+     */
+    float showTime;
 
     /**