Source files split into modules

1 files changed, 0 insertions, 870 deletions

diff --git a/src/list.cpp b/src/list.cpp
deleted file mode 100644
index 08b09c0..0000000
--- a/src/list.cpp
+++ /dev/null
@@ -1,870 +0,0 @@
-// * This file is part of the COLOBOT source code

-// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch

-// *

-// * This program 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.

-// *

-// * This program 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 this program. If not, see  http://www.gnu.org/licenses/.

-

-// list.cpp

-

-#define STRICT

-#define D3D_OVERLOADS

-

-#include <windows.h>

-#include <stdio.h>

-#include <d3d.h>

-

-#include "struct.h"

-#include "d3dengine.h"

-#include "math3d.h"

-#include "event.h"

-#include "misc.h"

-#include "iman.h"

-#include "button.h"

-#include "scroll.h"

-#include "text.h"

-#include "list.h"

-

-

-

-#define MARGING		4.0f

-

-

-

-// Object's constructor.

-

-CList::CList(CInstanceManager* iMan) : CControl(iMan)

-{

-	int		i;

-

-	for ( i=0 ; i<LISTMAXDISPLAY ; i++ )

-	{

-		m_button[i] = 0;

-	}

-	m_scroll = 0;

-

-	for ( i=0 ; i<LISTMAXTOTAL ; i++ )

-	{

-		m_text[i][0] = 0;

-		m_check[i] = FALSE;

-		m_enable[i] = TRUE;

-	}

-

-	for ( i=0 ; i<10 ; i++ )

-	{

-		m_tabs[i] = 0.0f;

-		m_justifs[i] = 1;

-	}

-

-	m_totalLine = 0;

-	m_displayLine = 0;

-	m_selectLine = -1;

-	m_firstLine = 0;

-	m_bBlink = FALSE;

-	m_bSelectCap = TRUE;

-	m_blinkTime = 0.0f;

-}

-

-// Object's destructor.

-

-CList::~CList()

-{

-	int		i;

-

-	for ( i=0 ; i<LISTMAXDISPLAY ; i++ )

-	{

-		delete m_button[i];

-	}

-	delete m_scroll;

-}

-

-

-// Creates a new list.

-

-BOOL CList::Create(FPOINT pos, FPOINT dim, int icon, EventMsg eventMsg,

-				   float expand)

-{

-	m_expand = expand;

-

-	if ( eventMsg == EVENT_NULL )  eventMsg = GetUniqueEventMsg();

-	CControl::Create(pos, dim, icon, eventMsg);

-

-	m_scroll = new CScroll(m_iMan);

-	m_scroll->Create(pos, dim, 0, EVENT_NULL);

-	m_eventScroll = m_scroll->RetEventMsg();

-

-	return MoveAdjust();

-}

-

-// Adjusted after a change of dimensions.

-

-BOOL CList::MoveAdjust()

-{

-	FPOINT		ipos, idim, ppos, ddim;

-	float		marging, h;

-	int			i;

-

-	for ( i=0 ; i<LISTMAXDISPLAY ; i++ )

-	{

-		delete m_button[i];

-		m_button[i] = 0;

-	}

-

-	if ( m_icon == 0 )  marging = MARGING;

-	else                marging = 0.0f;

-

-	ipos.x = m_pos.x+marging/640.f;

-	ipos.y = m_pos.y+marging/480.f;

-	idim.x = m_dim.x-marging*2.0f/640.f;

-	idim.y = m_dim.y-marging*2.0f/480.f;

-

-	h = m_engine->RetText()->RetHeight(m_fontSize, m_fontType)*m_expand;

-

-	m_displayLine = (int)(idim.y/h);

-	if ( m_displayLine == 0 )  return FALSE;

-	if ( m_displayLine > LISTMAXDISPLAY )  m_displayLine = LISTMAXDISPLAY;

-	idim.y = h*m_displayLine;

-	m_dim.y = idim.y+marging*2.0f/480.f;

-

-	ppos.x = ipos.x;

-	ppos.y = ipos.y+idim.y-h;

-	ddim.x = idim.x-SCROLL_WIDTH;

-	ddim.y = h;

-	for ( i=0 ; i<m_displayLine ; i++ )

-	{

-		m_button[i] = new CButton(m_iMan);

-		m_button[i]->Create(ppos, ddim, -1, EVENT_NULL);

-		m_button[i]->SetJustif(1);

-		m_button[i]->SetState(STATE_SIMPLY);

-		m_button[i]->SetFontType(m_fontType);

-		m_button[i]->SetFontSize(m_fontSize);

-		ppos.y -= h;

-

-		m_eventButton[i] = m_button[i]->RetEventMsg();

-	}

-

-	if ( m_scroll != 0 )

-	{

-		ppos.x = ipos.x+idim.x-SCROLL_WIDTH;

-		ppos.y = ipos.y;

-		ddim.x = SCROLL_WIDTH;

-		ddim.y = idim.y;

-		m_scroll->SetPos(ppos);

-		m_scroll->SetDim(ddim);

-	}

-

-	UpdateScroll();

-	UpdateButton();

-	return TRUE;

-}

-

-

-// Returns the message of a button.

-

-EventMsg CList::RetEventMsgButton(int i)

-{

-	if ( i < 0 || i >= m_displayLine )  return EVENT_NULL;

-	if ( m_button[i] == 0 )  return EVENT_NULL;

-	return m_button[i]->RetEventMsg();

-}

-

-// Returns the message from the elevator.

-

-EventMsg CList::RetEventMsgScroll()

-{

-	if ( m_scroll == 0 )  return EVENT_NULL;

-	return m_scroll->RetEventMsg();

-}

-

-

-void CList::SetPos(FPOINT pos)

-{

-	CControl::SetPos(pos);

-}

-

-void CList::SetDim(FPOINT dim)

-{

-	m_dim = dim;

-	MoveAdjust();

-	CControl::SetDim(dim);

-}

-

-

-BOOL CList::SetState(int state, BOOL bState)

-{

-	int		i;

-

-	if ( state & STATE_ENABLE )

-	{

-		for ( i=0 ; i<m_displayLine ; i++ )

-		{

-			if ( m_button[i] != 0 )  m_button[i]->SetState(state, bState);

-		}

-		if ( m_scroll != 0 )  m_scroll->SetState(state, bState);

-	}

-

-	return CControl::SetState(state, bState);

-}

-

-BOOL CList::SetState(int state)

-{

-	int		i;

-

-	if ( state & STATE_ENABLE )

-	{

-		for ( i=0 ; i<m_displayLine ; i++ )

-		{

-			if ( m_button[i] != 0 )  m_button[i]->SetState(state);

-		}

-		if ( m_scroll != 0 )  m_scroll->SetState(state);

-	}

-

-	return CControl::SetState(state);

-}

-

-BOOL CList::ClearState(int state)

-{

-	int		i;

-

-	if ( state & STATE_ENABLE )

-	{

-		for ( i=0 ; i<m_displayLine ; i++ )

-		{

-			if ( m_button[i] != 0 )  m_button[i]->ClearState(state);

-		}

-		if ( m_scroll != 0 )  m_scroll->ClearState(state);

-	}

-

-	return CControl::ClearState(state);

-}

-

-

-// Management of an event.

-

-BOOL CList::EventProcess(const Event &event)

-{

-	int		i;

-

-	if ( m_bBlink                   &&  // blinks?

-		 event.event == EVENT_FRAME )

-	{

-		i = m_selectLine-m_firstLine;

-

-		if ( i >= 0 && i < 4  &&

-			 m_button[i] != 0 )

-		{

-			m_blinkTime += event.rTime;

-			if ( Mod(m_blinkTime, 0.7f) < 0.3f )

-			{

-				m_button[i]->ClearState(STATE_ENABLE);

-				m_button[i]->ClearState(STATE_CHECK);

-			}

-			else

-			{

-				m_button[i]->SetState(STATE_ENABLE);

-				m_button[i]->SetState(STATE_CHECK);

-			}

-		}

-	}

-

-	if ( (m_state & STATE_VISIBLE) == 0 )  return TRUE;

-	if ( (m_state & STATE_ENABLE) == 0 )  return TRUE;

-

-	if ( event.event == EVENT_KEYDOWN &&

-		 event.param == VK_WHEELUP    &&

-		 Detect(event.pos)            )

-	{

-		if ( m_firstLine > 0 )  m_firstLine --;

-		UpdateScroll();

-		UpdateButton();

-		return TRUE;

-	}

-	if ( event.event == EVENT_KEYDOWN &&

-		 event.param == VK_WHEELDOWN  &&

-		 Detect(event.pos)            )

-	{

-		if ( m_firstLine < m_totalLine-m_displayLine )  m_firstLine ++;

-		UpdateScroll();

-		UpdateButton();

-		return TRUE;

-	}

-

-	CControl::EventProcess(event);

-

-	if ( event.event == EVENT_MOUSEMOVE && Detect(event.pos) )

-	{

-		m_engine->SetMouseType(D3DMOUSENORM);

-		for ( i=0 ; i<m_displayLine ; i++ )

-		{

-			if ( i+m_firstLine >= m_totalLine )  break;

-			if ( m_button[i] != 0 )

-			{

-				m_button[i]->EventProcess(event);

-			}

-		}

-	}

-

-	if ( m_bSelectCap )

-	{

-		for ( i=0 ; i<m_displayLine ; i++ )

-		{

-			if ( i+m_firstLine >= m_totalLine )  break;

-			if ( m_button[i] != 0 )

-			{

-				if ( !m_button[i]->EventProcess(event) )  return FALSE;

-

-				if ( event.event == m_eventButton[i] )

-				{

-					SetSelect(m_firstLine+i);

-

-					Event newEvent = event;

-					newEvent.event = m_eventMsg;

-					m_event->AddEvent(newEvent);  // selected line changes

-				}

-			}

-		}

-	}

-

-	if ( m_scroll != 0 )

-	{

-		if ( !m_scroll->EventProcess(event) )  return FALSE;

-

-		if ( event.event == m_eventScroll )

-		{

-			MoveScroll();

-			UpdateButton();

-		}

-	}

-

-	return TRUE;

-}

-

-

-// Draws the list.

-

-void CList::Draw()

-{

-	FPOINT	uv1, uv2, corner, pos, dim, ppos, ddim;

-	float	dp;

-	int		i, j;

-	char	text[100];

-	char	*pb, *pe;

-

-	if ( (m_state & STATE_VISIBLE) == 0 )  return;

-

-	if ( m_state & STATE_SHADOW )

-	{

-		DrawShadow(m_pos, m_dim);

-	}

-

-	dp = 0.5f/256.0f;

-

-	if ( m_icon != -1 )

-	{

-		dim = m_dim;

-

-		if ( m_icon == 0 )

-		{

-			m_engine->SetTexture("button2.tga");

-			m_engine->SetState(D3DSTATENORMAL);

-

-			uv1.x = 128.0f/256.0f;

-			uv1.y =  64.0f/256.0f;  // u-v texture

-			uv2.x = 160.0f/256.0f;

-			uv2.y =  96.0f/256.0f;

-		}

-		else

-		{

-			m_engine->SetTexture("button2.tga");

-			m_engine->SetState(D3DSTATENORMAL);

-

-			uv1.x = 132.0f/256.0f;

-			uv1.y =  68.0f/256.0f;  // u-v texture

-			uv2.x = 156.0f/256.0f;

-			uv2.y =  92.0f/256.0f;

-

-			if ( m_button[0] != 0 )

-			{

-				dim = m_button[0]->RetDim();

-				dim.y *= m_displayLine;  // background sounds spot behind

-			}

-		}

-

-		uv1.x += dp;

-		uv1.y += dp;

-		uv2.x -= dp;

-		uv2.y -= dp;

-

-		corner.x = 10.0f/640.0f;

-		corner.y = 10.0f/480.0f;

-		DrawIcon(m_pos, dim, uv1, uv2, corner, 8.0f/256.0f);

-	}

-

-	if ( m_totalLine < m_displayLine )  // no buttons to the bottom?

-	{

-		i = m_totalLine;

-		if ( m_button[i] != 0 )

-		{

-			pos = m_button[i]->RetPos();

-			dim = m_button[i]->RetDim();

-			pos.y += dim.y*1.1f;

-			dim.y *= 0.4f;

-			pos.y -= dim.y;

-

-			m_engine->SetTexture("button2.tga");

-			m_engine->SetState(D3DSTATETTw);

-			uv1.x = 120.0f/256.0f;

-			uv1.y =  64.0f/256.0f;

-			uv2.x = 128.0f/256.0f;

-			uv2.y =  48.0f/256.0f;

-			uv1.x += dp;

-			uv1.y -= dp;

-			uv2.x -= dp;

-			uv2.y += dp;

-			DrawIcon(pos, dim, uv1, uv2);  // ch'tite shadow cute  (?)

-		}

-	}

-	

-	for ( i=0 ; i<m_displayLine ; i++ )

-	{

-		if ( i+m_firstLine >= m_totalLine )  break;

-

-		if ( m_button[i] != 0 )

-		{

-			if ( !m_bBlink && i+m_firstLine < m_totalLine )

-			{

-				m_button[i]->SetState(STATE_ENABLE, m_enable[i+m_firstLine] && (m_state & STATE_ENABLE) );

-			}

-			m_button[i]->Draw();  // draws a box without text

-

-			// draws text in the box

-			pos = m_button[i]->RetPos();

-			dim = m_button[i]->RetDim();

-			if ( m_tabs[0] == 0.0f )

-			{

-				ppos.x = pos.x+dim.y*0.5f;

-				ppos.y = pos.y+dim.y*0.5f;

-				ppos.y -= m_engine->RetText()->RetHeight(m_fontSize, m_fontType)/2.0f;

-				ddim.x = dim.x-dim.y;

-				DrawCase(m_text[i+m_firstLine], ppos, ddim.x, 1);

-			}

-			else

-			{

-				ppos.x = pos.x+dim.y*0.5f;

-				ppos.y = pos.y+dim.y*0.5f;

-				ppos.y -= m_engine->RetText()->RetHeight(m_fontSize, m_fontType)/2.0f;

-				pb = m_text[i+m_firstLine];

-				for ( j=0 ; j<10 ; j++ )

-				{

-					pe = strchr(pb, '\t');

-					if ( pe == 0 )

-					{

-						strcpy(text, pb);

-					}

-					else

-					{

-						strncpy(text, pb, pe-pb);

-						text[pe-pb] = 0;

-					}

-					DrawCase(text, ppos, m_tabs[j], m_justifs[j]);

-

-					if ( pe == 0 )  break;

-					ppos.x += m_tabs[j];

-					pb = pe+1;

-				}

-			}

-

-			if ( (m_state & STATE_EXTEND) && i < m_totalLine )

-			{

-				pos = m_button[i]->RetPos();

-				dim = m_button[i]->RetDim();

-				pos.x += dim.x-dim.y*0.75f;

-				dim.x = dim.y*0.75f;

-				pos.x += 2.0f/640.0f;

-				pos.y += 2.0f/480.0f;

-				dim.x -= 4.0f/640.0f;

-				dim.y -= 4.0f/480.0f;

-

-				if ( m_check[i+m_firstLine] )

-				{

-					m_engine->SetTexture("button1.tga");

-					m_engine->SetState(D3DSTATENORMAL);

-					uv1.x = 64.0f/256.0f;

-					uv1.y =  0.0f/256.0f;

-					uv2.x = 96.0f/256.0f;

-					uv2.y = 32.0f/256.0f;

-					uv1.x += dp;

-					uv1.y += dp;

-					uv2.x -= dp;

-					uv2.y -= dp;

-					DrawIcon(pos, dim, uv1, uv2);  // square shape

-

-					m_engine->SetState(D3DSTATETTw);

-					uv1.x =  0.0f/256.0f;  // v

-					uv1.y = 64.0f/256.0f;

-					uv2.x = 32.0f/256.0f;

-					uv2.y = 96.0f/256.0f;

-					uv1.x += dp;

-					uv1.y += dp;

-					uv2.x -= dp;

-					uv2.y -= dp;

-					DrawIcon(pos, dim, uv1, uv2);  // draws v

-				}

-				else

-				{

-					m_engine->SetTexture("button1.tga");

-					m_engine->SetState(D3DSTATETTw);

-					if ( i+m_firstLine == m_selectLine )

-					{

-						uv1.x =224.0f/256.0f;  // <

-						uv1.y =192.0f/256.0f;

-						uv2.x =256.0f/256.0f;

-						uv2.y =224.0f/256.0f;

-					}

-					else

-					{

-						uv1.x = 96.0f/256.0f;  // x

-						uv1.y = 32.0f/256.0f;

-						uv2.x =128.0f/256.0f;

-						uv2.y = 64.0f/256.0f;

-					}

-					uv1.x += dp;

-					uv1.y += dp;

-					uv2.x -= dp;

-					uv2.y -= dp;

-					DrawIcon(pos, dim, uv1, uv2);  // draws x

-				}

-			}

-		}

-	}

-

-	if ( m_scroll != 0 )

-	{

-		m_scroll->Draw();  // draws the lift

-	}

-}

-

-// Displays text in a box.

-

-void CList::DrawCase(char *text, FPOINT pos, float width, int justif)

-{

-	if ( justif == 1 )

-	{

-		m_engine->RetText()->DrawText(text, pos, width, 1, m_fontSize, m_fontStretch, m_fontType, 0);

-	}

-	else if ( justif == 0 )

-	{

-		pos.x += width/2.0f;

-		m_engine->RetText()->DrawText(text, pos, width, 0, m_fontSize, m_fontStretch, m_fontType, 0);

-	}

-	else

-	{

-		pos.x += width;

-		m_engine->RetText()->DrawText(text, pos, width, -1, m_fontSize, m_fontStretch, m_fontType, 0);

-	}

-}

-

-

-// Empty the list completely.

-

-void CList::Flush()

-{

-	m_totalLine = 0;

-	m_selectLine = -1;

-	m_firstLine = 0;

-	UpdateButton();

-	UpdateScroll();

-}

-

-

-// Specifies the total number of lines.

-

-void CList::SetTotal(int i)

-{

-	m_totalLine = i;

-}

-

-// Returns the total number of lines.

-

-int CList::RetTotal()

-{

-	return m_totalLine;

-}

-

-

-// Selects a line.

-

-void CList::SetSelect(int i)

-{

-	if ( m_bSelectCap )

-	{

-		m_selectLine = i;

-	}

-	else

-	{

-		m_firstLine = i;

-		UpdateScroll();

-	}

-

-	UpdateButton();

-}

-

-// Returns the selected line.

-

-int CList::RetSelect()

-{

-	if ( m_bSelectCap )

-	{

-		return m_selectLine;

-	}

-	else

-	{

-		return m_firstLine;

-	}

-}

-

-

-// Management of capability has a select box.

-

-void CList::SetSelectCap(BOOL bEnable)

-{

-	m_bSelectCap = bEnable;

-}

-

-BOOL CList::RetSelectCap()

-{

-	return m_bSelectCap;

-}

-

-

-// Blink a line.

-

-void CList::SetBlink(BOOL bEnable)

-{

-	int		i;

-

-	m_bBlink = bEnable;

-	m_blinkTime = 0.0f;

-

-	i = m_selectLine-m_firstLine;

-

-	if ( i >= 0 && i < 4  &&

-		 m_button[i] != 0 )

-	{

-		if ( !bEnable )

-		{

-			m_button[i]->SetState(STATE_CHECK);

-			m_button[i]->ClearState(STATE_ENABLE);

-		}

-	}

-}

-

-BOOL CList::RetBlink()

-{

-	return m_bBlink;

-}

-

-

-// Specifies the text of a line.

-

-void CList::SetName(int i, char* name)

-{

-	if ( i < 0 || i >= LISTMAXTOTAL )  return;

-

-	if ( i >= m_totalLine )

-	{

-		m_totalLine = i+1;  // expands the list

-	}

-

-	if ( name[0] == 0 )

-	{

-		strcpy(m_text[i], " ");

-	}

-	else

-	{

-		strcpy(m_text[i], name);

-	}

-	UpdateButton();

-	UpdateScroll();

-}

-

-// Returns the text of a line.

-

-char* CList::RetName(int i)

-{

-	if ( i < 0 || i >= m_totalLine )  return 0;

-

-	return m_text[i];

-}

-

-

-// Specifies the bit "check" for a box.

-

-void CList::SetCheck(int i, BOOL bMode)

-{

-	if ( i < 0 || i >= m_totalLine )  return;

-

-	m_check[i] = bMode;

-}

-

-// Returns the bit "check" for a box.

-

-BOOL CList::RetCheck(int i)

-{

-	if ( i < 0 || i >= m_totalLine )  return FALSE;

-

-	return m_check[i];

-}

-

-

-// Specifies the bit "enable" for a box.

-

-void CList::SetEnable(int i, BOOL bMode)

-{

-	if ( i < 0 || i >= m_totalLine )  return;

-

-	m_enable[i] = bMode;

-}

-

-// Returns the bit "enable" for a box.

-

-BOOL CList::RetEnable(int i)

-{

-	if ( i < 0 || i >= m_totalLine )  return FALSE;

-

-	return m_enable[i];

-}

-

-

-// Management of the position of the tabs.

-

-void CList::SetTabs(int i, float pos, int justif)

-{

-	if ( i < 0 || i >= 10 )  return;

-	m_tabs[i] = pos;

-	m_justifs[i] = justif;

-}

-

-float  CList::RetTabs(int i)

-{

-	if ( i < 0 || i >= 10 )  return 0.0f;

-	return m_tabs[i];

-}

-

-

-// Moves the lift to see the list of the selected line.

-

-void CList::ShowSelect(BOOL bFixed)

-{

-	int		sel;

-

-	if ( bFixed &&

-		 m_selectLine >= m_firstLine &&

-		 m_selectLine <  m_firstLine+m_displayLine )  return;  // all good

-

-	sel = m_selectLine;

-

-	// Down from 1/2 * h.

-	sel += m_displayLine/2;

-	if ( sel > m_totalLine-1 )  sel = m_totalLine-1;

-

-	// Back to h-1.

-	sel -= m_displayLine-1;

-	if ( sel < 0 )  sel = 0;

-

-	m_firstLine = sel;

-

-	UpdateButton();

-	UpdateScroll();

-}

-

-

-// Updates all button names.

-

-void CList::UpdateButton()

-{

-	int		state, i, j;

-

-	state = CControl::RetState();

-

-	j = m_firstLine;

-	for ( i=0 ; i<m_displayLine ; i++ )

-	{

-		if ( m_button[i] == 0 )  continue;

-

-		m_button[i]->SetState(STATE_CHECK, (j == m_selectLine));

-

-		if ( j < m_totalLine )

-		{

-//?			m_button[i]->SetName(m_text[j]);

-			m_button[i]->SetName(" ");  // blank button

-			m_button[i]->SetState(STATE_ENABLE, (state & STATE_ENABLE));

-		}

-		else

-		{

-			m_button[i]->SetName(" ");  // blank button

-			m_button[i]->ClearState(STATE_ENABLE);

-		}

-		j ++;

-	}

-}

-

-// Updates the lift.

-

-void CList::UpdateScroll()

-{

-	float	ratio, value, step;

-

-	if ( m_scroll == 0 )  return;

-

-	if ( m_totalLine <= m_displayLine )

-	{

-		ratio = 1.0f;

-		value = 0.0f;

-		step = 0.0f;

-	}

-	else

-	{

-		ratio = (float)m_displayLine/m_totalLine;

-		if ( ratio > 1.0f )  ratio = 1.0f;

-

-		value = (float)m_firstLine/(m_totalLine-m_displayLine);

-		if ( value < 0.0f )  value = 0.0f;

-		if ( value > 1.0f )  value = 1.0f;

-

-		step = (float)1.0f/(m_totalLine-m_displayLine);

-		if ( step < 0.0f )  step = 0.0f;

-	}

-

-	m_scroll->SetVisibleRatio(ratio);

-	m_scroll->SetVisibleValue(value);

-	m_scroll->SetArrowStep(step);

-}

-

-// Update when the lift is moving.

-

-void CList::MoveScroll()

-{

-	float	pos;

-	int		n;

-

-	if ( m_scroll == 0 )  return;

-

-	n = m_totalLine-m_displayLine;

-	pos = m_scroll->RetVisibleValue();

-	pos += m_scroll->RetArrowStep()/2.0f;  // it's magic!

-	m_firstLine = (int)(pos*n);

-	if ( m_firstLine < 0 )  m_firstLine = 0;

-	if ( m_firstLine > n )  m_firstLine = n;

-}

-

-