Changeset 6417 for code/trunk/src/libraries/core/IOConsole.cc

Timestamp:

Dec 25, 2009, 10:23:58 PM (15 years ago)

Author:

rgrieder

Message:

Merged presentation2 branch back to trunk.
Major new features:

• Actual GUI with settings, etc.
• Improved space ship steering (human interaction)
• Rocket fire and more particle effects
• Advanced sound framework

Location:

code/trunk

Files:

• . (modified) (1 prop)
• src/libraries/core/IOConsole.cc (modified) (20 diffs)

code/trunk/src/libraries/core/IOConsole.cc

@@ -32 +32 @@
 #include <iomanip>
 #include <iostream>
+
+#include "util/Clock.h"
+#include "util/Math.h"
 #include "core/Game.h"
 #include "core/input/InputBuffer.h"
@@ -42 +45 @@
     IOConsole* IOConsole::singletonPtr_s = NULL;
 
-    int IOConsole::extractLogLevel(std::string* text)
-    {
-        // Handle line colouring by inspecting the first letter
-        char level = 0;
-        if (!text->empty())
-        {
-            level = (*text)[0];
-            if (level == -1 || level >= 1 && level <= 6)
-            {
-                *text = text->substr(1);
-                if (level != -1)
-                    return level;
-            }
-        }
-        return 0;
-    }
-
-    inline bool IOConsole::willPrintStatusLines()
-    {
-        return !this->statusLineWidths_.empty()
-             && this->terminalWidth_  >= this->statusLineMaxWidth_
-             && this->terminalHeight_ >= (this->minOutputLines_ + this->statusLineWidths_.size());
-    }
-
     // ###############################
     // ###  ShellListener methods  ###
@@ -78 +57 @@
     }
 
-    //! Called if the text in the input-line has changed
-    void IOConsole::inputChanged()
-    {
-        this->printInputLine();
-        this->cout_.flush();
-    }
-
-    //! Called if the position of the cursor in the input-line has changed
-    void IOConsole::cursorChanged()
-    {
-        this->printInputLine();
-        this->cout_.flush();
-    }
-
     //! Called if a command is about to be executed
     void IOConsole::executed()
     {
-        this->shell_->addOutputLine(this->promptString_ + this->shell_->getInput());
+        this->shell_->addOutput(this->promptString_ + this->shell_->getInput() + '\n', Shell::Command);
     }
 
@@ -126 +91 @@
 
     IOConsole::IOConsole()
-        : shell_(new Shell("IOConsole", false, true))
+        : shell_(new Shell("IOConsole", false))
         , buffer_(shell_->getInputBuffer())
         , cout_(std::cout.rdbuf())
+        , promptString_("orxonox # ")
         , bStatusPrinted_(false)
-        , promptString_("orxonox # ")
-        , originalTerminalSettings_(new termios())
+        , originalTerminalSettings_(0)
     {
         this->setTerminalMode();
@@ -151 +116 @@
 
         // Make sure we make way for the status lines
-        this->update(Game::getInstance().getGameClock());
+        this->preUpdate(Game::getInstance().getGameClock());
     }
 
     IOConsole::~IOConsole()
     {
-        // Empty all buffers
-        this->update(Game::getInstance().getGameClock());
+        // Process output written to std::cout in the meantime
+        std::cout.flush();
+        if (!this->origCout_.str().empty())
+            this->shell_->addOutput(this->origCout_.str(), Shell::None);
         // Erase input and status lines
         this->cout_ << "\033[1G\033[J";
@@ -166 +133 @@
 
         resetTerminalMode();
-        delete this->originalTerminalSettings_;
         this->shell_->destroy();
 
@@ -175 +141 @@
     }
 
-    void IOConsole::update(const Clock& time)
+    void IOConsole::preUpdate(const Clock& time)
     {
         unsigned char c;
@@ -284 +250 @@
         }
 
-        // We always assume that the cursor is on the inputline.
+        // We always assume that the cursor is on the input line.
         // But we cannot always be sure about that, esp. if we scroll the console
         this->cout_ << "\033[" << this->statusLineWidths_.size() << 'B';
@@ -296 +262 @@
 
         // Process output written to std::cout
+        std::cout.flush();
         if (!this->origCout_.str().empty())
         {
-            this->shell_->addOutputLine(this->origCout_.str());
+            this->shell_->addOutput(this->origCout_.str(), Shell::None);
             this->origCout_.str("");
         }
     }
 
-    void IOConsole::printLogText(const std::string& text)
-    {
-        std::string output = text;
-        /*int level =*/ this->extractLogLevel(&output);
-
+    void IOConsole::printOutputLine(const std::string& text, Shell::LineType type)
+    {
 /*
         // Colour line
-        switch (level)
-        {
-        case -1: this->cout_ << "\033[37m"; break;
-        case  1: this->cout_ << "\033[91m"; break;
-        case  2: this->cout_ << "\033[31m"; break;
-        case  3: this->cout_ << "\033[34m"; break;
-        case  4: this->cout_ << "\033[36m"; break;
-        case  5: this->cout_ << "\033[35m"; break;
-        case  6: this->cout_ << "\033[37m"; break;
+        switch (type)
+        {
+        case Shell::None:    this->cout_ << "\033[37m"; break;
+        case Shell::Error:   this->cout_ << "\033[91m"; break;
+        case Shell::Warning: this->cout_ << "\033[31m"; break;
+        case Shell::Info:    this->cout_ << "\033[34m"; break;
+        case Shell::Debug:   this->cout_ << "\033[36m"; break;
+        case Shell::Verbose: this->cout_ << "\033[35m"; break;
+        case Shell::Ultra:   this->cout_ << "\033[37m"; break;
         default: break;
         }
@@ -324 +288 @@
 
         // Print output line
-        this->cout_ << output;
+        this->cout_ << text;
 
         // Reset colour to white
@@ -343 +307 @@
         this->cout_ << "\033[u";
         if (this->buffer_->getCursorPosition() > 0)
-            this->cout_ << "\033[" << this->buffer_->getCursorPosition() << "C";
+            this->cout_ << "\033[" << this->buffer_->getCursorPosition() << 'C';
     }
 
@@ -367 +331 @@
     {
         termios new_settings;
+        this->originalTerminalSettings_ = new termios();
 
         tcgetattr(0, this->originalTerminalSettings_);
@@ -375 +340 @@
         new_settings.c_cc[VMIN]  = 0;
         tcsetattr(0, TCSANOW, &new_settings);
-    }
-
-    void IOConsole::resetTerminalMode()
-    {
-        tcsetattr(0, TCSANOW, IOConsole::originalTerminalSettings_);
+        atexit(&IOConsole::resetTerminalMode);
+    }
+
+    /*static*/ void IOConsole::resetTerminalMode()
+    {
+        if(IOConsole::singletonPtr_s && IOConsole::singletonPtr_s->originalTerminalSettings_)
+        {
+            tcsetattr(0, TCSANOW, IOConsole::singletonPtr_s->originalTerminalSettings_);
+            delete IOConsole::singletonPtr_s->originalTerminalSettings_;
+            IOConsole::singletonPtr_s->originalTerminalSettings_ = 0;
+        }
     }
 
@@ -411 +382 @@
     }
 
+    inline bool IOConsole::willPrintStatusLines()
+    {
+        return !this->statusLineWidths_.empty()
+             && this->terminalWidth_  >= this->statusLineMaxWidth_
+             && this->terminalHeight_ >= this->minOutputLines_ + (int)this->statusLineWidths_.size();
+    }
+
     // ###############################
     // ###  ShellListener methods  ###
@@ -423 +401 @@
         this->cout_ << "\033[K";
         // Reprint the last output line
-        this->printLogText(*(this->shell_->getNewestLineIterator()));
+        this->printOutputLine(this->shell_->getNewestLineIterator()->first, this->shell_->getNewestLineIterator()->second);
         // Restore cursor
         this->cout_ << "\033[u";
@@ -432 +410 @@
     void IOConsole::lineAdded()
     {
-        int newLines = this->shell_->getNewestLineIterator()->size() / this->terminalWidth_ + 1;
+        int newLines = this->shell_->getNewestLineIterator()->first.size() / this->terminalWidth_ + 1;
         // Create new lines by scrolling the screen
         this->cout_ << "\033[" << newLines << 'S';
@@ -441 +419 @@
         // Print the new output lines
         for (int i = 0; i < newLines; ++i)
-            this->printLogText(this->shell_->getNewestLineIterator()->substr(i*this->terminalWidth_, this->terminalWidth_));
+        {
+            Shell::LineList::const_iterator it = this->shell_->getNewestLineIterator();
+            this->printOutputLine(it->first.substr(i*this->terminalWidth_, this->terminalWidth_), it->second);
+        }
         // Move cursor down
         this->cout_ << "\033[1B\033[1G";
@@ -449 +430 @@
         this->cout_.flush();
     }
+
+    //! Called if the text in the input-line has changed
+    void IOConsole::inputChanged()
+    {
+        this->printInputLine();
+        this->cout_.flush();
+    }
+
+    //! Called if the position of the cursor in the input-line has changed
+    void IOConsole::cursorChanged()
+    {
+        this->printInputLine();
+        this->cout_.flush();
+    }
 }
 
@@ -456 +451 @@
 // ##################################
 
+#include <windows.h>
+
 namespace orxonox
 {
+    //! Redirects std::cout, creates the corresponding Shell and changes the terminal mode
     IOConsole::IOConsole()
-        : shell_(new Shell("IOConsole", false, true))
+        : shell_(new Shell("IOConsole", false))
         , buffer_(shell_->getInputBuffer())
         , cout_(std::cout.rdbuf())
-        , bStatusPrinted_(false)
         , promptString_("orxonox # ")
-    {
+        , inputLineHeight_(1)
+        , statusLines_(1)
+        , lastOutputLineHeight_(0)
+    {
+        // Disable standard this->cout_ logging
+        OutputHandler::getInstance().disableCout();
+        // Redirect std::cout to an ostringstream
+        // (Other part is in the initialiser list)
+        std::cout.rdbuf(this->origCout_.rdbuf());
+
+        this->setTerminalMode();
+        CONSOLE_SCREEN_BUFFER_INFO screenBufferInfo;
+        GetConsoleScreenBufferInfo(this->stdOutHandle_, &screenBufferInfo);
+        this->terminalWidth_  = screenBufferInfo.dwSize.X;
+        this->terminalHeight_ = screenBufferInfo.dwSize.Y;
+        // Determines where we are in respect to output already written with std::cout
+        this->inputLineRow_ = screenBufferInfo.dwCursorPosition.Y;
 /*
-        this->setTerminalMode();
+        this->lastTerminalWidth_  = this->terminalWidth_;
+        this->lastTerminalHeight_ = this->terminalHeight_;
+*/
+
+        // Cursor already at the end of the screen buffer?
+        // (assuming the current input line height is 1)
+        if (this->inputLineRow_ >= this->terminalHeight_ - this->statusLines_)
+            SetConsoleCursorPosition(this->stdOutHandle_, makeCOORD(0, this->terminalHeight_ - this->statusLines_));
+
+        // Prevent input line from overflowing
+        int maxInputLength = (this->terminalHeight_ - this->statusLines_) * this->terminalWidth_ - 1 - this->promptString_.size();
+        // Consider that the echo of a command might include the command plus some other characters (assumed max 80)
+        // Also put a minimum so the config file parser is not overwhelmed with the command history
+        this->buffer_->setMaxLength(std::min(8192, (maxInputLength - 80) / 2));
+
+        // Print input and status line and position cursor
+        this->inputChanged();
+        this->cursorChanged();
+        this->lastRefreshTime_ = Game::getInstance().getGameClock().getRealMicroseconds();
+        this->preUpdate(Game::getInstance().getGameClock());
+
         this->shell_->registerListener(this);
-
-        // Manually set the widths of the individual status lines
-        this->statusLineWidths_.push_back(29);
-        this->statusLineMaxWidth_ = 29;
-
-        this->getTerminalSize();
+    }
+
+    //! Resets std::cout redirection and restores the terminal mode
+    IOConsole::~IOConsole()
+    {
+        // Process output written to std::cout in the meantime
+        std::cout.flush();
+        if (!this->origCout_.str().empty())
+            this->shell_->addOutput(this->origCout_.str(), Shell::None);
+
+        this->shell_->unregisterListener(this);
+
+        // Erase input and status lines
+        COORD pos = {0, this->inputLineRow_};
+        this->writeText(std::string((this->inputLineHeight_ + this->statusLines_) * this->terminalWidth_, ' '), pos);
+        // Move cursor to the beginning of the line
+        SetConsoleCursorPosition(stdOutHandle_, pos);
+
+        // Restore this->cout_ redirection
+        std::cout.rdbuf(this->cout_.rdbuf());
+        // Enable standard this->cout_ logging again
+        OutputHandler::getInstance().enableCout();
+
+        resetTerminalMode();
+        this->shell_->destroy();
+    }
+
+    //! Processes the pending input key strokes, refreshes the status lines and handles std::cout (redirected)
+    void IOConsole::preUpdate(const Clock& time)
+    {
+        // Process input
+        while (true)
+        {
+            DWORD count;
+            INPUT_RECORD inrec;
+            PeekConsoleInput(this->stdInHandle_, &inrec, 1, &count);
+            if (count == 0)
+                break;
+            ReadConsoleInput(this->stdInHandle_, &inrec, 1, &count);
+            if (inrec.EventType == KEY_EVENT && inrec.Event.KeyEvent.bKeyDown)
+            {
+                // Process keyboard modifiers (Ctrl, Alt and Shift)
+                DWORD modifiersIn = inrec.Event.KeyEvent.dwControlKeyState;
+                int modifiersOut = 0;
+                if ((modifiersIn & (LEFT_ALT_PRESSED  | RIGHT_ALT_PRESSED))  != 0)
+                    modifiersOut |= KeyboardModifier::Alt;
+                if ((modifiersIn & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) != 0)
+                    modifiersOut |= KeyboardModifier::Ctrl;
+                if ((modifiersIn & SHIFT_PRESSED) != 0)
+                    modifiersOut |= KeyboardModifier::Shift;
+
+                // ASCII character (0 for special keys)
+                char asciiChar = inrec.Event.KeyEvent.uChar.AsciiChar;
+
+                // Process special keys and if not found, use Key::A as dummy (InputBuffer uses the ASCII text anyway)
+                switch (inrec.Event.KeyEvent.wVirtualKeyCode)
+                {
+                case VK_BACK:   this->buffer_->buttonPressed(KeyEvent(KeyCode::Back,     asciiChar, modifiersOut)); break;
+                case VK_TAB:    this->buffer_->buttonPressed(KeyEvent(KeyCode::Tab,      asciiChar, modifiersOut)); break;
+                case VK_RETURN: this->buffer_->buttonPressed(KeyEvent(KeyCode::Return,   asciiChar, modifiersOut)); break;
+                case VK_PAUSE:  this->buffer_->buttonPressed(KeyEvent(KeyCode::Pause,    asciiChar, modifiersOut)); break;
+                case VK_ESCAPE: this->buffer_->buttonPressed(KeyEvent(KeyCode::Escape,   asciiChar, modifiersOut)); break;
+                case VK_SPACE:  this->buffer_->buttonPressed(KeyEvent(KeyCode::Space,    asciiChar, modifiersOut)); break;
+                case VK_PRIOR:  this->buffer_->buttonPressed(KeyEvent(KeyCode::PageUp,   asciiChar, modifiersOut)); break;
+                case VK_NEXT:   this->buffer_->buttonPressed(KeyEvent(KeyCode::PageDown, asciiChar, modifiersOut)); break;
+                case VK_END:    this->buffer_->buttonPressed(KeyEvent(KeyCode::End,      asciiChar, modifiersOut)); break;
+                case VK_HOME:   this->buffer_->buttonPressed(KeyEvent(KeyCode::Home,     asciiChar, modifiersOut)); break;
+                case VK_LEFT:   this->buffer_->buttonPressed(KeyEvent(KeyCode::Left,     asciiChar, modifiersOut)); break;
+                case VK_UP:     this->buffer_->buttonPressed(KeyEvent(KeyCode::Up,       asciiChar, modifiersOut)); break;
+                case VK_RIGHT:  this->buffer_->buttonPressed(KeyEvent(KeyCode::Right,    asciiChar, modifiersOut)); break;
+                case VK_DOWN:   this->buffer_->buttonPressed(KeyEvent(KeyCode::Down,     asciiChar, modifiersOut)); break;
+                case VK_INSERT: this->buffer_->buttonPressed(KeyEvent(KeyCode::Insert,   asciiChar, modifiersOut)); break;
+                case VK_DELETE: this->buffer_->buttonPressed(KeyEvent(KeyCode::Delete,   asciiChar, modifiersOut)); break;
+                default:        this->buffer_->buttonPressed(KeyEvent(KeyCode::A,        asciiChar, modifiersOut));
+                }
+            }
+        }
+
+        // TODO: Respect screen buffer size changes
+/*
+        // The user can manually adjust the screen buffer size on Windows
+        // And we don't want to screw the console because of that
         this->lastTerminalWidth_ = this->terminalWidth_;
         this->lastTerminalHeight_ = this->terminalHeight_;
-
-        // Disable standard this->cout_ logging
-        OutputHandler::getInstance().disableCout();
+        this->getTerminalSize(); // Also sets this->inputLineRow_ according to the cursor position
+        // Is there still enough space below the cursor for the status line(s)?
+        if (this->inputLineRow_ >= this->terminalHeight_ - this->statusLines_)
+            this->moveCursor(0, -this->inputLineRow_ + this->terminalHeight_ - this->statusLines_ - 1);
 */
-    }
-
-    IOConsole::~IOConsole()
-    {
-/*
-        resetTerminalMode();
-        this->shell_->destroy();
-
-        // Enable standard this->cout_ logging again
-        OutputHandler::getInstance().enableCout();
-*/
-    }
-
-    void IOConsole::update(const Clock& time)
-    {
-/*
-        unsigned char c = 0;
-        while (std::cin.good())
-        {
-            c = std::cin.get();
-            if (std::cin.bad())
-                break;
-        }
-        // Reset error flags in std::cin
-        std::cin.clear();
-
-        // Determine terminal width and height
-        this->lastTerminalWidth_ = this->terminalWidth_;
-        this->lastTerminalHeight_ = this->terminalHeight_;
-        this->getTerminalSize();
-*/
-    }
-
-    void IOConsole::printLogText(const std::string& text)
-    {
-    }
-
-    void IOConsole::printInputLine()
-    {
-    }
-
+
+        // Refresh status line 5 times per second
+        if (time.getMicroseconds() > this->lastRefreshTime_ + 1000000)
+        {
+            this->printStatusLines();
+            this->lastRefreshTime_ = time.getMicroseconds();
+        }
+
+        // Process output written to std::cout
+        std::cout.flush();
+        if (!this->origCout_.str().empty())
+        {
+            this->shell_->addOutput(this->origCout_.str(), Shell::None);
+            this->origCout_.str("");
+        }
+    }
+
+    //! Prints output text. Similar to writeText, but sets the colour according to the output level
+    void IOConsole::printOutputLine(const std::string& text, Shell::LineType type, const COORD& pos)
+    {
+        // Colour line
+        WORD colour = 0;
+        switch (type)
+        {
+        case Shell::Error:   colour = FOREGROUND_INTENSITY                    | FOREGROUND_RED; break;
+        case Shell::Warning: colour = FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED; break;
+        case Shell::Info:
+        case Shell::Debug:
+        case Shell::Verbose:
+        case Shell::Ultra:   colour = FOREGROUND_INTENSITY                                     ; break;
+        case Shell::Command: colour =                        FOREGROUND_GREEN                  | FOREGROUND_BLUE; break;
+        case Shell::Hint:    colour =                        FOREGROUND_GREEN | FOREGROUND_RED                  ; break;
+        default:             colour =                        FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE; break;
+        }
+
+        // Print output line
+        this->writeText(text, pos, colour);
+    }
+
+    //! Prints all status lines with current content
     void IOConsole::printStatusLines()
     {
-/*
-        if (this->willPrintStatusLines())
-        {
-            this->bStatusPrinted_ = true;
-        }
-        else
-            this->bStatusPrinted_ = false;
-*/
-    }
-
+        // Prepare text to be written
+        std::ostringstream oss;
+        oss << std::fixed << std::setprecision(2) << std::setw(5) << Game::getInstance().getAvgFPS() << " fps, ";
+        oss <<               std::setprecision(2) << std::setw(5) << Game::getInstance().getAvgTickTime() << " ms tick time";
+        // Clear rest of the line by inserting spaces
+        oss << std::string(this->terminalWidth_ - oss.str().size(), ' ');
+        this->writeText(oss.str(), makeCOORD(0, this->inputLineRow_ + this->inputLineHeight_), FOREGROUND_GREEN);
+    }
+
+    //! Changes the console parameters for unbuffered input
     void IOConsole::setTerminalMode()
     {
-    }
-
+        // Set the console mode to no-echo, raw input, and no window or mouse events
+        this->stdOutHandle_ = GetStdHandle(STD_OUTPUT_HANDLE);
+        this->stdInHandle_  = GetStdHandle(STD_INPUT_HANDLE);
+        if (this->stdInHandle_ == INVALID_HANDLE_VALUE
+            || !GetConsoleMode(this->stdInHandle_, &this->originalTerminalSettings_)
+            || !SetConsoleMode(this->stdInHandle_, 0))
+        {
+            COUT(1) << "Error: Could not set Windows console settings" << std::endl;
+            return;
+        }
+        FlushConsoleInputBuffer(this->stdInHandle_);
+    }
+
+    //! Restores the console parameters
     void IOConsole::resetTerminalMode()
     {
-    }
-
+        SetConsoleMode(this->stdInHandle_, this->originalTerminalSettings_);
+    }
+
+    //! Sets this->terminalWidth_ and this->terminalHeight_
     void IOConsole::getTerminalSize()
     {
+        CONSOLE_SCREEN_BUFFER_INFO screenBufferInfo;
+        GetConsoleScreenBufferInfo(this->stdOutHandle_, &screenBufferInfo);
+        this->terminalWidth_  = screenBufferInfo.dwSize.X;
+        this->terminalHeight_ = screenBufferInfo.dwSize.Y;
+    }
+
+    //! Writes arbitrary text to the console with a certain colour and screen buffer position
+    void IOConsole::writeText(const std::string& text, const COORD& coord, WORD attributes)
+    {
+        DWORD count;
+        WriteConsoleOutputCharacter(stdOutHandle_, text.c_str(), text.size(), coord, &count);
+        FillConsoleOutputAttribute(stdOutHandle_, attributes, text.size(), coord, &count);
+    }
+
+    /** Scrolls the console screen buffer to create empty lines above the input line.
+    @details
+        If the input and status lines are already at the bottom of the screen buffer
+        the whole output gets scrolled up. In the other case the input and status
+        lines get scrolled down.
+        In any case the status and input lines get scrolled down as far as possible.
+    @param lines
+        Number of lines to be inserted. Behavior for negative values is undefined.
+    */
+    void IOConsole::createNewOutputLines(int lines)
+    {
+        CHAR_INFO fillChar = {{' '}, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED};
+        // Lines to scroll input/status down (if possible)
+        int linesDown = clamp(terminalHeight_ - inputLineRow_ - inputLineHeight_ - statusLines_, 0, lines);
+        if (linesDown > 0)
+        {
+            // Scroll input and status lines down
+            SMALL_RECT oldRect = {0, this->inputLineRow_,
+                this->terminalWidth_ - 1, this->inputLineRow_ + this->inputLineHeight_ + this->statusLines_ - 1};
+            this->inputLineRow_ += linesDown;
+            ScrollConsoleScreenBuffer(stdOutHandle_, &oldRect, NULL, makeCOORD(0, this->inputLineRow_), &fillChar);
+            // Move cursor down to the new bottom so the user can see the status lines
+            COORD pos = {0, this->inputLineRow_ + this->inputLineHeight_ - 1 + this->statusLines_};
+            SetConsoleCursorPosition(stdOutHandle_, pos);
+            // Get cursor back to the right position
+            this->cursorChanged();
+        }
+        // Check how many lines we still have to scroll up the output
+        if (lines - linesDown > 0)
+        {
+            // Scroll output up
+            SMALL_RECT oldRect = {0, lines - linesDown, this->terminalWidth_ - 1, this->inputLineRow_ - 1};
+            ScrollConsoleScreenBuffer(stdOutHandle_, &oldRect, NULL, makeCOORD(0, 0), &fillChar);
+        }
     }
 
@@ -549 +720 @@
     // ###############################
 
+    //! Called if the text in the input line has changed
+    void IOConsole::inputChanged()
+    {
+        int newInputLineLength = this->promptString_.size() + this->shell_->getInput().size();
+        int newInputLineHeight = 1 + newInputLineLength / this->terminalWidth_;
+        int newLines = newInputLineHeight - this->inputLineHeight_;
+        if (newLines > 0)
+        {
+            // Abuse this function to scroll the console
+            this->createNewOutputLines(newLines);
+            // Either Compensate for side effects (input/status lines scrolled down)
+            // or we have to do this anyway (output scrolled up)
+            this->inputLineRow_ -= newLines;
+        }
+        else if (newLines < 0)
+        {
+            // Scroll status lines up
+            int statusLineRow = this->inputLineRow_ + this->inputLineHeight_;
+            SMALL_RECT oldRect = {0, statusLineRow, this->terminalWidth_ - 1, statusLineRow + this->statusLines_};
+            CHAR_INFO fillChar = {{' '}, FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED};
+            ScrollConsoleScreenBuffer(stdOutHandle_, &oldRect, NULL, makeCOORD(0, statusLineRow + newLines), &fillChar);
+            // Clear potential leftovers
+            if (-newLines - this->statusLines_ > 0)
+            {
+                COORD pos = {0, this->inputLineRow_ + newInputLineHeight + this->statusLines_};
+                this->writeText(std::string((-newLines - this->statusLines_) * this->terminalWidth_, ' '), pos);
+            }
+        }
+        this->inputLineHeight_ = newInputLineHeight;
+
+        // Print the whole line, including spaces that erase leftovers
+        std::string inputLine = this->promptString_ + this->shell_->getInput();
+        inputLine += std::string(this->terminalWidth_ - newInputLineLength % this->terminalWidth_, ' ');
+        this->writeText(inputLine, makeCOORD(0, this->inputLineRow_), FOREGROUND_GREEN | FOREGROUND_INTENSITY);
+        // If necessary, move cursor
+        if (newLines != 0)
+            this->cursorChanged();
+    }
+
+    //! Called if the position of the cursor in the input-line has changed
+    void IOConsole::cursorChanged()
+    {
+        int rawCursorPos = this->promptString_.size() + this->buffer_->getCursorPosition();
+        // Compensate for cursor further to the right than the terminal width
+        COORD pos;
+        pos.X = rawCursorPos % this->terminalWidth_;
+        pos.Y = this->inputLineRow_ + rawCursorPos / this->terminalWidth_;
+        SetConsoleCursorPosition(stdOutHandle_, pos);
+    }
+
     //! Called if only the last output-line has changed
     void IOConsole::onlyLastLineChanged()
     {
-    }
-
-    //! Called if a new output-line was added
+        int newLineHeight = 1 + this->shell_->getNewestLineIterator()->first.size() / this->terminalWidth_;
+        // Compute the number of new lines needed
+        int newLines = newLineHeight - this->lastOutputLineHeight_;
+        this->lastOutputLineHeight_ = newLineHeight;
+        // Scroll console if necessary
+        if (newLines > 0) // newLines < 0 is assumed impossible
+            this->createNewOutputLines(newLines);
+        Shell::LineList::const_iterator it = this->shell_->getNewestLineIterator();
+        this->printOutputLine(it->first, it->second, makeCOORD(0, this->inputLineRow_ - newLineHeight));
+    }
+
+    //! Called if a new output line was added
     void IOConsole::lineAdded()
     {
+        Shell::LineList::const_iterator it = this->shell_->getNewestLineIterator();
+        // Scroll console
+        this->lastOutputLineHeight_ = 1 + it->first.size() / this->terminalWidth_;
+        this->createNewOutputLines(this->lastOutputLineHeight_);
+        // Write the text
+        COORD pos = {0, this->inputLineRow_ - this->lastOutputLineHeight_};
+        this->printOutputLine(it->first, it->second, pos);
     }
 }