From 1713bebb64257b3146bd945011f44bf87264f24c Mon Sep 17 00:00:00 2001
From: Andrzej Kapolka <andrzej@doe.(none)>
Date: Thu, 25 Apr 2013 17:36:47 -0700
Subject: [PATCH] Added the basic key press/message composition display.

---
 interface/src/Audio.cpp  |  1 +
 interface/src/Avatar.cpp | 19 +++++++++++++++++--
 interface/src/main.cpp   |  1 +
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/interface/src/Audio.cpp b/interface/src/Audio.cpp
index 4b522d5823..1959b5ae33 100644
--- a/interface/src/Audio.cpp
+++ b/interface/src/Audio.cpp
@@ -517,6 +517,7 @@ float Audio::getInputLoudness() const {
 void Audio::render(int screenWidth, int screenHeight)
 {
     if (initialized) {
+        glLineWidth(3);
         glBegin(GL_LINES);
         glColor3f(1,1,1);
         
diff --git a/interface/src/Avatar.cpp b/interface/src/Avatar.cpp
index 621a4bd512..3a2d9f83cf 100644
--- a/interface/src/Avatar.cpp
+++ b/interface/src/Avatar.cpp
@@ -652,8 +652,9 @@ void Avatar::render(bool lookingInMirror) {
     
     if (!_chatMessage.empty()) {
         float width = 0;
+        float lastWidth;
         for (string::iterator it = _chatMessage.begin(); it != _chatMessage.end(); it++) {
-            width += glutStrokeWidth(GLUT_STROKE_ROMAN, *it)*chatMessageScale;
+            width += (lastWidth = glutStrokeWidth(GLUT_STROKE_ROMAN, *it)*chatMessageScale);
         }
         glPushMatrix();
         
@@ -668,7 +669,21 @@ void Avatar::render(bool lookingInMirror) {
         glTranslatef(width * 0.5, 0, 0);
         
         glDisable(GL_LIGHTING);
-        drawtext(0, 0, chatMessageScale, 180, 1.0, 0, _chatMessage.c_str(), 0, 1, 0);
+        if (_keyState == NoKeyDown) {
+            drawtext(0, 0, chatMessageScale, 180, 1.0, 0, _chatMessage.c_str(), 0, 1, 0);
+            
+        } else {
+            // rather than using substr and allocating a new string, just replace the last
+            // character with a null, then restore it
+            int lastIndex = _chatMessage.size() - 1;
+            char lastChar = _chatMessage[lastIndex];
+            _chatMessage[lastIndex] = '\0';
+            drawtext(0, 0, chatMessageScale, 180, 1.0, 0, _chatMessage.c_str(), 0, 1, 0);
+            _chatMessage[lastIndex] = lastChar;
+            glTranslatef(lastWidth - width, 0, 0);
+            drawtext(0, 0, chatMessageScale, 180, 3.0,
+                0, _chatMessage.c_str() + lastIndex, 0, 1, 0);                        
+        }
         glEnable(GL_LIGHTING);
         
         glPopMatrix();
diff --git a/interface/src/main.cpp b/interface/src/main.cpp
index dc716cfe41..b803ff0ce8 100644
--- a/interface/src/main.cpp
+++ b/interface/src/main.cpp
@@ -1381,6 +1381,7 @@ void key(unsigned char k, int x, int y)
         if (chatEntry.key(k)) {
             myAvatar.setKeyState(k == '\b' || k == 127 ? // backspace or delete
                 AvatarData::DeleteKeyDown : AvatarData::InsertKeyDown);            
+            myAvatar.setChatMessage(string(chatEntry.getContents().size(), 'X'));
             
         } else {
             myAvatar.setChatMessage(chatEntry.getContents());