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TextArea.cpp
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TextArea.cpp
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/***************************************************************************
TextArea.cpp - description
-------------------
begin : Wed Jan 28 2004
copyright : (C) 2004 by upi
email : upi@feel
***************************************************************************/
#include "TextArea.h"
#include "sge_surface.h"
#include "sge_tt_text.h"
#include "sge_primitives.h"
#include "gfx.h"
#include "common.h"
#include <ctype.h>
CTextArea::CTextArea( SDL_Surface* a_poScreen, _sge_TTFont* a_poFont, int a_x, int a_y, int a_w, int a_h )
{
m_poScreen = a_poScreen;
m_poFont = a_poFont;
m_iScrollOffset = 0;
m_oClipRect.x = x = a_x;
m_oClipRect.y = y = a_y;
m_oClipRect.w = w = a_w;
m_oClipRect.h = h = a_h;
m_poBackground = sge_copy_surface( a_poScreen, x, y, w, h );
}
CTextArea::~CTextArea()
{
SDL_FreeSurface( m_poBackground );
m_poBackground = NULL;
}
void CTextArea::Clear()
{
m_aiRowColors.clear();
m_asRowTexts.clear();
m_iScrollOffset = 0;
}
void CTextArea::TintBackground( int a_iColor, int a_iAlpha )
{
if ( NULL == m_poBackground )
{
return;
}
sge_FilledRectAlpha( m_poBackground, 0, 0, m_poBackground->w, m_poBackground->h, a_iColor, a_iAlpha );
}
void CTextArea::AddString( const char* a_poText, int a_iColor )
{
while ( a_poText && *a_poText )
{
// 1. FORMAT THE TEXT SO IT FITS US NICELY
SDL_Rect oRect;
int i, j;
for ( i=0; a_poText[i]; ++i )
{
oRect = sge_TTF_TextSize( m_poFont, a_poText, i );
if ( oRect.w > m_oClipRect.w )
{
break;
}
}
// i now points to the character AFTER the last good character.
//if ( a_poText[i] && i>1 ) --i;
// Trace back to the first space BEFORE i
if ( a_poText[i] )
{
for ( j = i; j>0; --j )
{
if ( isspace( a_poText[j] ) )
{
break;
}
}
if ( j>0 )
{
i = j;
}
}
// 2. ADD IT.
m_asRowTexts.push_front( std::string(a_poText,i) );
m_aiRowColors.push_front( a_iColor );
a_poText += i;
debug( "Added '%s', number of texts is %d\n", a_poText, m_asRowTexts.size() );
}
}
void CTextArea::ScrollUp()
{
if ( m_iScrollOffset < (int) m_asRowTexts.size() - h / sge_TTF_FontHeight(m_poFont) )
{
++m_iScrollOffset;
Redraw();
}
}
void CTextArea::ScrollDown()
{
if ( m_iScrollOffset > 0 )
{
--m_iScrollOffset;
Redraw();
}
}
void CTextArea::Redraw()
{
TStringList::const_iterator itString = m_asRowTexts.begin();
TIntList::const_iterator itColors = m_aiRowColors.begin();
for ( int i=0; i<m_iScrollOffset; ++i )
{
++itString;
++itColors;
}
SDL_Rect oOldClipRect;
SDL_GetClipRect( m_poScreen, &oOldClipRect );
SDL_SetClipRect( m_poScreen, &m_oClipRect );
sge_TTF_AAOn();
sge_Blit( m_poBackground, m_poScreen, 0, 0, x, y, w, h );
int iRows = h / sge_TTF_FontHeight( m_poFont );
int yPos = y + (iRows-1) * sge_TTF_FontHeight( m_poFont );
for ( ; yPos >= y; yPos -= sge_TTF_FontHeight( m_poFont ) )
{
if ( itColors == m_aiRowColors.end() )
{
break;
}
// Print the current text
sge_tt_textout( m_poScreen, m_poFont, itString->c_str(), x, yPos + sge_TTF_FontAscent(m_poFont), *itColors, C_BLACK, 255 );
++itString;
++itColors;
}
sge_UpdateRect( m_poScreen, x, y, w, h );
SDL_SetClipRect( m_poScreen, &oOldClipRect );
sge_TTF_AAOff();
}

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