lpi (Lode's Programming Interface) Code

/*
Copyright (c) 2005-2008 Lode Vandevenne
All rights reserved.

This file is part of Lode's Programming Interface.

Lode's Programming Interface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Lode's Programming Interface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Lode's Programming Interface.  If not, see <http://www.gnu.org/licenses/>.
*/


#include "lpi_gui_text.h"

#include "lodepng.h"
#include "lpi_gl.h"
#include "lpi_draw2dgl.h"
#include "lpi_draw2d.h"
#include "lpi_file.h"
#include "lpi_base64.h"
#include "lpi_xml.h"
#include <SDL/SDL.h> //this is for the key codes like SDLK_ENTER

#include <iostream>
#include <cstdlib>

namespace lpi
{
namespace gui
{

////////////////////////////////////////////////////////////////////////////////
//GUIINPUTLINE//////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
The InputLine Class Functions
InputLine allows the user to enter a single line of text.

How to use it:
  You can give text color styles with color1, color2, style
  When the draw() function is called, it is drawn and handled, i.e. user unicode key presses are detected, ...
  It is only handled if "active" is true, otherwise it's only drawn and it ignores user input
  Fetch the text with getText or by simply using inputLine.text
  Check if the user pressed enter, clicked on it with mouse, .... with the check() function
*/

//the default constructor
InputLine::InputLine()
{
  this->x0 = 0;
  this->y0 = 0;
  this->l = 0;
  this->markup = TS_White;
  this->type = 0;
  this->allowedChars = 0;
  this->title = "";
  this->control_active = 0;
  
  this->text = "";
  cursor = 0;
  entered = 0;
}

void InputLine::make(int x, int y, unsigned long l, const Markup& markup, int type, int allowedChars, const std::string& title, const Markup& titleMarkup, const ColorRGB& cursorColor)
{
  this->x0 = x;
  this->y0 = y;
  this->l = l;
  this->markup = markup;
  this->titleMarkup = titleMarkup;
  this->cursorColor = cursorColor;
  this->type = type;
  this->allowedChars = allowedChars;
  this->title = title;
  
  this->text = "";
  cursor = 0;
  entered = 0;
  
  if(type == 2) //if the type is "integer"
  {
    allowedChars |= 3; //set "disable text" and "disable special symbols" to true
  }
  
  this->setSizeY( markup.getHeight()); //font height
  this->setSizeX((title.length() + l) * markup.getWidth());
  
  this->active = 1;
  this->visible = 1;
  this->present = 1;
}

//this function draws the line, and makes sure it gets handled too
void InputLine::drawWidget(IGUIDrawer& drawer) const
{
  print(title, x0, y0, titleMarkup);

  int inputX = x0 + title.length() * markup.getWidth()/*(inputPos / h) % w*/;
  int inputY = y0/*inputPos % h*/;
  if(type == 0) print(text, inputX, inputY, markup);
  else if(type == 1) //password
  {
    unsigned long p = 0;
    while(p < text.length() && p < l)
    {
      drawLetter('*', inputX + p * 8, inputY, markup);
      p++;
    }
  }
  else if(type == 2) print(getInteger(), inputX, inputY, markup);
  
  //draw the cursor if active
  if(control_active && (int(draw_time * 2.0) % 2 == 0 || mouseDown(drawer.getInput())))
  {
    int cursorXDraw = inputX + cursor * markup.getWidth();
    drawLine(cursorXDraw, inputY, cursorXDraw, inputY + markup.getHeight(), cursorColor);
  }
}

//return values of check():
/*
0: the text string is empty, and the rest of the things below aren't true either
&1: the text string is not empty
&2: you pressed ENTER (to enter the text string!)

normally you'll want to check if the return value is 3: then you entered a non-empty string
*/
int InputLine::check() //both check if you pressed enter, and also check letter keys pressed, backspace, etc...
{   
  int returnValue = 0;
  if(text.length() > 0) returnValue |= 1;
  if(entered) returnValue |= 2;
  
  entered = 0;
  
  return returnValue;
}

//returns true if the user entered text, i.e. if there's text in it, and the user presses enter, and it's active
int InputLine::enter()
{
  if((check() & 2) && (check() & 1) && active) return 1;
  else return 0;
}

void InputLine::handleWidget(const IGUIInput& input) //both check if you pressed enter, and also check letter keys pressed, backspace, etc...
{
  autoActivate(input, auto_activate_mouse_state, control_active);
  if(!control_active) return;
  
  draw_time = input.getSeconds();
  
  if(cursor >= text.length()) cursor = text.length();

  int ascii = input.unicodeKey(allowedChars, 0.5, 0.025);
  if(ascii)
  {
    switch(ascii)
    {
      case 8: //backspace
        if(cursor > 0)
        {
          cursor--;
          text.erase(cursor, 1);
        }
        break;
      case 13: //enter
        entered = 1;
        break;
      case 127: //delete
        if(cursor <= text.size())
        {
          text.erase(cursor, 1);
        }
        break;
      //a few certainly not meant to be printed ones
      case 0:
        break;
      case 10: break;
      default:
        if(text.length() < l) text.insert(cursor, 1, ascii);
        if(text.length() < l || cursor == l - 1) cursor++;
        break;
    }
  }
  
  if(input.keyPressed(SDLK_HOME)) cursor = 0;
  if(input.keyPressed(SDLK_END))
  {
    unsigned long pos = 0;
    while(text[pos] != 0 && pos < text.length()) pos++;
    cursor = pos;
  }
  if(input.keyPressedTime(SDLK_LEFT, 0.5, 0.025)) if(cursor > 0) cursor--;
  if(input.keyPressedTime(SDLK_RIGHT, 0.5, 0.025)) if(cursor < text.length()) cursor++;

  if(mouseDown(input))
  {
    int relMouse = input.mouseX() - x0;
    relMouse -= title.length() * markup.getWidth();
    if(relMouse / markup.getWidth() < int(text.length())) cursor = relMouse / markup.getWidth();
    else cursor = text.length();
  }
}

void InputLine::clear()
{
  setText("");
  cursor = 0;
}

void InputLine::setText(const std::string& i_text)
{
  this->text = i_text;
}

const std::string& InputLine::getText() const
{
  return text;
}

void InputLine::setTitle(const std::string& i_title)
{
  int size_diff = i_title.size() - title.size();
  this->title = i_title;
  growX1(size_diff * titleMarkup.getWidth());
}

const std::string& InputLine::getTitle() const
{
  return title;
}

int InputLine::getInteger() const
{
  return std::atoi(text.c_str());
}

////////////////////////////////////////////////////////////////////////////////
//MultiLineText class
////////////////////////////////////////////////////////////////////////////////

MultiLineText::MultiLineText()
{
  this->text = "";
  resetLines();
  char10 = 1;
  useFormatting = 1;
  markup = TS_W;
}

void MultiLineText::resetLines()
{
  line.clear(); //reset lines
  line.push_back(0); //character 0 is always a new line since it's the beginning of the text
}

void MultiLineText::generateLineMarkup()
{
  lineMarkup.clear();
  lineMarkup.push_back(markup);
  
  Markup markup_ = markup;
  
  for(unsigned long i = 0; i < getNumLines(); i++)
  {
    std::string s = getLine(i);
    getFormattedMarkup(s, markup_, markup);
    lineMarkup.push_back(markup_);
  }
}

//from now on, this will also split words that are too long into multiple parts
void MultiLineText::splitWords(int width)
{
  resetLines();
  
  unsigned long charsPerLine = width / markup.getWidth();
  
  unsigned long pos = 0; //current position in the string
  unsigned long cline = 1; //current line
  unsigned long linepos = 0; //*printable* character position on current line, becomes 0 at every "newline"
  
  while(pos < text.length())
  {
    //get length of next word
    unsigned long wordpos = pos;
    unsigned long wordlength = 0;
    unsigned long steplength = 0; //word length + length of possible format symbols
    bool formattedEnd = false;
    while(!formattedEnd && !(text[wordpos] == ' ' || text[wordpos] == 0 || (char10 && (text[wordpos] == 10 || text[wordpos] == 13)) || wordlength >= charsPerLine))
    {
      if(!useFormatting || text[wordpos] != '#')
      {
        wordpos++;
        wordlength++;
        steplength++;
      }
      else
      {
        wordpos++;
        steplength++;
        if(wordpos < text.size())
        {
          char c = text[wordpos];
          switch(c)
          {
            case 'n':
              formattedEnd = true; //it breaks out of this loop, and the next part of the function will then detect the 'n' and treat it as newline
              break;
            default:
              wordpos += getFormattedTextAttrSize(c) + 1;
              wordlength += getFormattedTextSymbolPrintSize(c);
              steplength += getFormattedTextAttrSize(c) + 1;
              break;
          }
        }
      }
    }
    
    //for now, words longer than width aren't split in two parts

    //see if word can be drawn on current line
    if(linepos + wordlength > charsPerLine)
    {
      line.push_back(pos); //the word is split by inserting newline in front of the word
      cline++;
      linepos = 0; //you're at a new line, so you're at the first char of the new line again
    }
    
    //pos pointer now goes to behind the following word
    pos += steplength;
    linepos += wordlength; //since you go to behind the word drawn on the current line

    //now check what is there behind the word: is it a newline? a space? or a null-termination char?
    switch(text[pos])
    {
      case ' ': //space
        pos++;
        linepos++;
        break;
      case 10: //newline
        if(char10)
        {
          line.push_back(pos);
          cline++;
          linepos = 0;
          pos++;
        }
        break;
      case 13: //ms windows newline, ignore
        if(char10)
        {
          pos++;
          //linepos++;
        }
        break;
      case 'n': //it's the newline, there's a # in front of it for sure because that was already checked higher
        if(useFormatting)
        {
          line.push_back(pos - 1);
          cline++;
          linepos = 0;
          pos++;
        }
        break;
      /*case 0: //null termination char
        break;*/
      default: //not supposed to happen
        //dprint("WTF? Error in MultiLineText::splitWords");
        break;
    }
  }
  
  line.push_back(text.length());
  
  if(useFormatting) generateLineMarkup();
}

void MultiLineText::splitLetters(int width)
{
  resetLines(); 
  
  unsigned long charsPerLine = width / markup.getWidth();
  
  unsigned long pos = 0; //current position in the string
  unsigned long cline = 1; //current line
  unsigned long linepos = 0; //character position on current line, becomes 0 at every "newline"
  
  while(/*text[pos] != 0*/pos < text.length())
  {
    switch(text[pos])
    {
      /*case 0: //termination char
        break;*/
      case 10: //newline char
        if(char10)
        {
          line[cline] = pos;
          cline++;
          linepos = 0;
          pos++;
        }
        break;
      default:
        if(linepos >= charsPerLine)
        {
          line.push_back(pos);
          cline++;
          linepos = 0;
        }
        pos++;
        linepos++;
        break;
    }
  }
  
  line.push_back(text.length());
  
  if(useFormatting) generateLineMarkup();
}

void MultiLineText::splitChar10()
{
  resetLines();
  
  unsigned long pos = 0; //current position in the string
  unsigned long cline = 1; //current line
  
  while(/*text[pos] != 0*/pos < text.length())
  {
    switch(text[pos])
    {
      /*case 0: //termination char
        break;*/
      case 10: //newline char
        line.push_back(pos);
        cline++;
        pos++;
        break;
      default:
        pos++;
        break;
    }
  }
  
  line.push_back(text.length());
  
  if(useFormatting) generateLineMarkup();
}

void MultiLineText::setText(const std::string& text)
{
  this->text = text;
}

void MultiLineText::addText(const std::string& text)
{
  this->text += text;
}

void MultiLineText::draw(int x, int y, unsigned long startLine, unsigned long endLine) const
{
  Markup markup_ = markup;
  
  if(startLine == endLine) return;
  
  unsigned long cline = startLine;
  
  while(cline < endLine)
  {
    int printy = y + markup.getHeight() * (cline - startLine); //y coordinate to draw the text
    std::string sub = getLine(cline); //string containing the current line
    if(useFormatting)
    {
      if(cline < lineMarkup.size()) markup_ = lineMarkup[cline];
      printFormattedM(sub, x, printy, markup_, markup);
    }
    else print(sub, x, printy, markup);
    cline++;
  }
}

void MultiLineText::draw(int x, int y) const
{
  draw(x, y, 0, getNumLines());
}

unsigned long MultiLineText::getNumLines() const
{
  if(text.length() == 0) return 0; //no text!
  
  return line.size() - 1; //the size of the std::vector is also the number of lines, minus one because the last value denotes the position of the final character of the text, which is no new line
}

std::string MultiLineText::getLine(unsigned long i) const
{
  if(i >= getNumLines()/* || i < 0*/) return "";
  
  int length = line[i + 1] - line[i];
  
  int start = line[i]; //the first character of the substring
  if(char10 && text[line[i]] == 10) //do NOT draw newline chars if it's used as newline (i.e. when char10 is true)
  {
    start++;
    length--;
  }
  
  if(length < 0) length = 0;
  
  //std::string sub = text.substr(start, length);
  std::string sub;
  for(int j = start; j < start + length; j++)
  {
    if(!(char10 && text[j] == 13)) sub += text[j];
  }
  
  return sub;
}

//returns line and column of character at pos (handy for cursors)
void MultiLineText::cursorAtCharPos(unsigned long pos, unsigned long& cline, unsigned long& column) const
{
  cline = 0;
  column = 0;
  
  int extraPos = 0;
  
  if(text[pos] == 10) {pos--; extraPos++;}

  if(text.length() == 0)
  {
    cline = 0;
    column = 0;
  }
  else if(getNumLines() == 1)
  {
    cline = 0;
    column = pos;
  }
  else if(pos < line[1])
  {
    cline = 0;
    column = pos;
  }
  else
  {
    if(pos >= text.length())
    {
      extraPos = pos - text.length() + 1;
      pos = text.length() - 1;
    }
  
    while(line[cline] <= pos)
    {
      cline++;
    }
    cline--;
    column = pos - line[cline];
    
    if(text[line[cline]] == 10) {column--; } //lines start with a 10 char if you pressed enter but this char isn't drawn. If the line does not start with a 10 char, column must be done + 1
  }
  column += extraPos;
}

//returns position of letter at given line and column
int MultiLineText::charAtCursorPos(unsigned long cline, unsigned long column) const
{
  if(getNumLines() <= cline) return text.length();
  
  unsigned long lineLength;
  
  if(cline == getNumLines() - 1) lineLength = text.length() - line[cline];
  else if(cline == 0) 
  {
    lineLength = line[1];
    if(text[line[1]] != 10) lineLength--;
  }
  else lineLength = line[cline + 1] - line[cline] - 1;
  
  unsigned long pos = line[cline];
  
  if(column > lineLength) column = lineLength;
  
  if(text[line[cline]] == 10) pos += 1;
  
  pos += column;
  
  if(pos > text.length()) pos = text.length();
  
  /*if(cline == 0)
  {
    pos = column;
  }*/
  
  return pos;
}

////////////////////////////////////////////////////////////////////////////////
//STRINGSTACK///////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
The String Stack is a rotating stack of strings, that is very helpful for the
Console.

It's actually not a real stack: you don't have to pop() to get values out of it,
you only have to push values into it, it rotates, and you can access any value.

You can access values relative to the newest, or relative to the oldest value.

The StringStack has a finite number of positions, when it's full, it'll overwrite
the oldest value. It can however use indexes as if the newely added text has always
the highest index when the stack is full.

First it must allocate memory for the wanted number of strings, and it must
destroy it again when it's no longer used.

num = max number of strings
*/

StringStack::StringStack()
{
  this->num = 0;
  this->oldest = 0;
  this->next = 0;
  this->numFilled = 0;
}

void StringStack::make(int num)
{
  if(num < 1) num = 1;
  this->num = num;
  this->oldest = 0;
  this->next = 0;
  this->numFilled = 0;
  
  for(int i = 0; i < num; i++) text.push_back("");
}

void StringStack::push(const std::string& text)
{
  this->text[next] = text;
  if(next == oldest && numFilled > 0) oldest = increase(oldest);
  next = increase(next);
  
  if(numFilled < num) numFilled++;
}

//returns the text that is position positions away from the oldest text
const std::string& StringStack::getOldest(int offset)
{
  int pointer = increase(oldest, offset);
  return text[pointer];
}

const std::string& StringStack::getNewest(int offset)
{
  int pointer = decrease(next);
  pointer = decrease(pointer, offset);
  
  return text[pointer];
}

//returns how full the memory is
int StringStack::getNumText() const
{
  return numFilled;
}

//increase the position of a pointer (like oldest or next), if it reaches the edge it goes back to 0
int StringStack::increase(int pointer, int amount)
{
  pointer += amount;
  if(pointer >= num) pointer %= num;
  return pointer;
}

int StringStack::decrease(int pointer, int amount)
{
  pointer -= amount;
  while(pointer < 0) pointer += num;
  if(pointer >= num) pointer %= num;
  return pointer;
}

////////////////////////////////////////////////////////////////////////////////
//GUICONSOLE////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
Console is a text window that contains different texts and can display
some of them like a console.

It's supposed to be used together with a scrollbar to be able to scroll it.
*/

Console::Console()
{
  this->num = 0;
  
  this->active = 0;
  this->visible = 0;

  this->scroll = 0;
}

void Console::make(int x, int y, int sizex, int sizey, int num, const Markup& markup)
{
  this->x0 = x;
  this->y0 = y;
  this->setSizeX(sizex);
  this->setSizeY(sizey);
  this->num = num;
  this->markup = markup;
  
  this->totallyEnable();

  this->scroll = 0;
  
  this->stack.make(num);

  calcNumLines();
}

void Console::push(const std::string& text/*, int length*/)
{
  stack.push(text);
  calcNumLines();  
}

void Console::calcNumLines()
{
  int line = 0;
  MultiLineText t;
  t.markup = markup;
  for(int i = 0; i < num; i++)
  {
    t.setText(stack.getOldest(i));
    t.splitWords(getSizeX());
    line += t.getNumLines();
  }
  numLines = line;
}

int Console::getNumLines() const
{
  return numLines;
}

int Console::getNumMessages() const
{
  return stack.getNumText();
}

int Console::getVisibleLines(const Markup& markup)
{
  return getSizeY() / markup.getHeight();
}

void Console::drawWidget(IGUIDrawer& /*drawer*/) const
{
  int line = 0;
  int message = 0;
  int maxScreenLines = getSizeY() / markup.getHeight();
  int messageLines = 0;
  int messageStartLine = 0;
  int messageEndLine = 0;
  int messageStartLineScreen = 0;
  int messageEndLineScreen = 0;
  int drawMessageStartLine = -1;
  int drawMessageEndLine = -1;
  int yDraw = 0;
   
  MultiLineText t;
  t.markup = markup;

  while(line - scroll < maxScreenLines && message < stack.getNumText())
  {
    messageStartLine = line; //first line of the message in all messages
    
    t.setText(stack.getOldest(message));
    t.splitWords(getSizeX());
    messageLines = t.getNumLines();
    //messageLines = calcTextLines(text[message], sizex, markup); //number of lines of the message
    messageEndLine = messageStartLine + messageLines - 1; //last line of the message
    messageStartLineScreen = messageStartLine - scroll;
    messageEndLineScreen = messageEndLine - scroll;
    line += messageLines;
    if(line >= scroll)
    {
      yDraw = y0 + (messageStartLine - scroll) * markup.getHeight();
      
      if(messageStartLineScreen < 0)
      {
        drawMessageStartLine = -messageStartLineScreen;
        yDraw = y0;
      }
      else drawMessageStartLine = -1;
      
      if(messageEndLineScreen >= maxScreenLines) drawMessageEndLine = messageLines - (messageEndLineScreen - maxScreenLines + 1);
      else drawMessageEndLine = -1;
      
      t.draw(x0, yDraw, drawMessageStartLine, drawMessageEndLine);
    }
    
    message++;
  }
}


////////////////////////////////////////////////////////////////////////////////
//GUITEXTAREA///////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
hmm I forgot what a guitextarea is for...
*/

TextArea::TextArea()
{
  this->active = 0;
  this->visible = 0;

  this->scroll = 0;
  
  this->scrollEnabled = 0;
}

void TextArea::make(int x, int y, int sizex, int sizey, const std::string& text, const Markup& markup)
{
  this->x0 = x;
  this->y0 = y;
  this->setSizeX(sizex);
  this->setSizeY(sizey);
  this->markup = markup;
  this->text.markup = markup;
  
  this->text.setText(text);
  this->text.splitWords(getSizeX());

  
  this->totallyEnable();

  this->scroll = 0;
}

void TextArea::setText(const std::string& text, const Markup& markup)
{
  this->markup = markup;
  this->text.markup = markup;
  
  this->text.setText(text);
  int width = getSizeX();
  if(scrollEnabled) width -= scrollbar.getSizeX();
  this->text.splitWords(width);

  this->scroll = 0;
  
  if(scrollEnabled) setScrollbarSize();
}


int TextArea::getNumLines() const
{
  return text.getNumLines();
}

void TextArea::resizeWidget()
{
  this->text.splitWords(getSizeX());
}

Element* TextArea::getAutoSubElement(unsigned long i)
{
  if(i == 0) return &scrollbar;
  else return 0;
}

void TextArea::handleWidget(const IGUIInput& input)
{
  if(scrollEnabled)
  {
    scrollbar.handle(input);
    scroll = int(scrollbar.scrollPos);
  }
}

int TextArea::getVisibleLines(const Markup& markup) const
{
  return getSizeY() / markup.getHeight();
}

void TextArea::drawWidget(IGUIDrawer& drawer) const
{
  int visible = getVisibleLines(markup);
  //scroll is the startline, scroll + visible is the end line
  int startLine = scroll;
  int endLine = scroll + visible;
  
  text.draw(x0, y0, startLine, endLine);
  
  if(scrollEnabled) scrollbar.draw(drawer);
}

void TextArea::setScrollbarSize()
{
  int size = text.getNumLines() - (getSizeY() / markup.getHeight());
  if(size < 0) size = 0;
  
  scrollbar.scrollSize = size;
}

void TextArea::addScrollbar()
{
  scrollEnabled = true;
  
  scrollbar.makeVertical(x1 - 16, 0, getSizeY());
  this->text.splitWords(getSizeX() - scrollbar.getSizeX());
  
  setScrollbarSize();
}

////////////////////////////////////////////////////////////////////////////////
//GUIINPUTBOX///////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
The InputBox Class Functions
InputBox  allows the user to enter a multi line text.
*/

InputBox::InputBox()
{
  this->visible = 0;
  this->active = 0;
}

void InputBox::make(int x, int y, int sizex, int sizey, int maxLines, int border
                  , const Markup& markup
                  //, BackPanel panel
                  , const ColorRGB& cursorColor)
{
  this->x0 = x;
  this->y0 = y;
  this->setSizeX(sizex);
  this->setSizeY(sizey);
  this->maxLines = maxLines;
  this->markup = markup;
  this->multiText.markup = markup;
  this->panel = panel;
  this->cursorColor = cursorColor;
  this->active = 1; 
  this->visible = 1;
  this->present = 1;
  this->cursor = 0;
  this->control_active = 0;
  this->border = border;
  
  init();
}

void InputBox::makeScrollbar(const GuiSet* set)
{
  bar.makeVertical(x1 - set->arrowN->getU(), y0, getSizeY(),
                   100, 0, 0, 1,
                   set, 1);
}

void InputBox::init()
{
  bar.makeVertical(x1 - builtInGuiSet.arrowN->getU(), y0, getSizeY(), 100, 0, 0, 1);
  bar.scrollSize = 1;
  bar.scrollPos = 0;
}

int InputBox::getLeftText() const
{
  return border;
}

int InputBox::getRightText() const
{
  return getSizeX() - border - bar.getSizeX();
}

int InputBox::getTopText() const
{
  return border;
}

int InputBox::getBottomText() const
{
  return getSizeY() - border;
}

int InputBox::getTextAreaHeight() const
{
  return getBottomText() - getTopText();
}

int InputBox::getTextAreaWidth() const
{
  return getRightText() - getLeftText();
}

int InputBox::getLinesVisible() const
{
  return getTextAreaHeight() / markup.getHeight();
}

void InputBox::drawWidget(IGUIDrawer& drawer) const
{
  panel.draw(x0, y0, getSizeX(), getSizeY());
  bar.draw(drawer);
  
  //draw the cursor if active
  if(control_active && int(draw_time * 2.0) % 2 == 0)
  {
    unsigned long cursorLine;
    unsigned long cursorColumn;
    multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
    int cursorXDraw = x0 + getLeftText() + cursorColumn * markup.getWidth();
    int cursorYDraw = y0 + getTopText() + (cursorLine - firstVisibleLine) * markup.getHeight();
    if(cursorYDraw >= y0 + getTopText() && cursorYDraw < y0 + getBottomText() - markup.getHeight()) drawLine(cursorXDraw, cursorYDraw, cursorXDraw, cursorYDraw + markup.getHeight(), cursorColor);
  }

  multiText.draw(x0 + getLeftText(), y0 + getTopText(), firstVisibleLine, firstVisibleLine + getLinesVisible());
}

void InputBox::handleWidget(const IGUIInput& input)
{
  autoActivate(input, auto_activate_mouse_state, control_active);
  if(!control_active) return;
  
  draw_time = input.getSeconds();
  
  bool scrollerMayJump = 0;
  
  if(input.keyPressed(SDLK_RIGHT)) if(cursor < text.length()) cursor++, scrollerMayJump = 1;
  if(input.keyPressed(SDLK_LEFT)) if(cursor > 0) cursor--, scrollerMayJump = 1;
  if(input.keyPressed(SDLK_UP))
  {
    unsigned long cursorLine;
    unsigned long cursorColumn;
    multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
    if(cursorLine > 0) cursor = multiText.charAtCursorPos(cursorLine - 1, cursorColumn);
    
    scrollerMayJump = 1;
  }
  if(input.keyPressed(SDLK_DOWN))
  {
    unsigned long cursorLine;
    unsigned long cursorColumn;
    multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
    cursor = multiText.charAtCursorPos(cursorLine + 1, cursorColumn);
    
    scrollerMayJump = 1;
  }
  if(input.keyPressed(SDLK_HOME))
  {
    if(input.keyDown(SDLK_LCTRL)) cursor = 0;
    else
    {
      unsigned long cursorLine;
      unsigned long cursorColumn;
      multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
      cursor = multiText.charAtCursorPos(cursorLine, 0);
    }
    
     scrollerMayJump = 1;
  }
  if(input.keyPressed(SDLK_END))
  {
    if(input.keyDown(SDLK_LCTRL)) cursor = text.length();
    else
    {
      unsigned long cursorLine;
      unsigned long cursorColumn;
      multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
      cursor = multiText.charAtCursorPos(cursorLine, int(getSizeX() / markup.getWidth()));
    }
    
     scrollerMayJump = 1;
  }

  int ascii = input.unicodeKey(0, 0.5, 0.025);
  if(ascii)
  {
    switch(ascii)
    {
      case 8: //backspace
        if(cursor > 0)
        {
          cursor--;
          text.erase(cursor, 1);
        }
        break;
      //a few certainly not meant to be printed ones
      case 0:
        break; 
      case 10:
        break;
      case 13:
        text.insert(cursor, 1, 10);
        cursor++;
        break;
      default:
        text.insert(cursor, 1, ascii);
        cursor++;
        break;
    }

    multiText.text = text;
    multiText.splitWords(getTextAreaWidth());
    
    scrollerMayJump = 1;
    
  }
  
  if(mouseDownHere(input) && !bar.mouseOver(input))
  {
    unsigned long mouseColumn = (mouseGetRelPosX(input) - getLeftText()) / markup.getWidth();
    unsigned long mouseLine = (mouseGetRelPosY(input) - getTopText()) / markup.getHeight() + firstVisibleLine;
    
    cursor = multiText.charAtCursorPos(mouseLine, mouseColumn);
  }
  
  int scrollSize = multiText.getNumLines() - getLinesVisible();
  if(scrollSize < 1) scrollSize = 1;
  bar.scrollSize = scrollSize;

  if(mouseScrollUp(input) && !bar.mouseOver(input))
  {
    bar.scroll(input, -2);
  }
  if(mouseScrollDown(input) && !bar.mouseOver(input))
  {
    bar.scroll(input, 2);
  }
  
  bar.handle(input);
  
  firstVisibleLine = int(bar.scrollPos);
  
  if(scrollerMayJump)
  {
    unsigned long cursorLine;
    unsigned long cursorColumn;
    multiText.cursorAtCharPos(cursor, cursorLine, cursorColumn);
    
    //int lineDifference = multiText.getNumLines() - getLinesVisible();
    //if(lineDifference < 1) lineDifference = 1;
    
    int cursorRelative = cursorLine - firstVisibleLine; //relative to the first visible line
    
    if(cursorRelative >= getLinesVisible()) bar.scrollPos = cursorLine - getLinesVisible() + 1;
    if(cursorRelative < 0) bar.scrollPos = cursorLine;
    //if(cursorRelative < 0) bar.scrollPos = cursorRelative + 1;

    //if((cursorRelative + 1) * markup.getHeight()

    //if(-getTopText() + (cursorRelative + 1) * markup.getHeight() >= 0) bar.scrollPos = cursorRelative + 1;
    //if(getBottomText() + cursorRelative * markup.getHeight() < (getBottomText() - getTopText())) bar.scrollPos = cursorLine;
  }
  
}

Element* InputBox::getAutoSubElement(unsigned long i)
{
  if(i == 0) return &bar;
  else return 0;
}

////////////////////////////////////////////////////////////////////////////////
//GUIFORMATTEDTEXT//////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

/*
FormattedText is just some formatted text as child of Element
*/

FormattedText::FormattedText()
{
  this->visible = 0;
  this->active = 0;
}

void FormattedText::make(int x, int y, const std::string& text, const Markup& markup)
{
  this->x0 = x;
  this->y0 = y;
  this->setSizeX(text.length() * markup.getWidth());
  this->setSizeY(markup.getHeight());
  this->text = text;
  this->markup = markup;
  this->totallyEnable();
}

void FormattedText::drawWidget(IGUIDrawer& /*drawer*/) const
{
  printFormatted(text, x0, y0, markup);
}

void FormattedText::setText(const std::string& text)
{
  this->text = text;
}

} //namespace gui
} //namespace lpi

////////////////////////////////////////////////////////////////////////////////