/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2010  PCSX2 Dev Team
 *
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 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 PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include <wx/wx.h>
#include "common/wxGuiTools.h"
#include "common/StringHelpers.h"

// --------------------------------------------------------------------------------------
//  pxWindowTextWriter  Implementations
// --------------------------------------------------------------------------------------
pxWindowTextWriter::pxWindowTextWriter(wxDC& dc)
	: m_dc(dc)
{
	m_curpos = wxPoint();
	m_align = wxALIGN_CENTER;
	m_leading = 0;

	OnFontChanged();
}

void pxWindowTextWriter::OnFontChanged()
{
}

pxWindowTextWriter& pxWindowTextWriter::SetWeight(wxFontWeight weight)
{
	wxFont curfont(m_dc.GetFont());
	curfont.SetWeight(weight);
	m_dc.SetFont(curfont);

	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::SetStyle(wxFontStyle style)
{
	wxFont curfont(m_dc.GetFont());
	curfont.SetStyle(style);
	m_dc.SetFont(curfont);
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::Normal()
{
	wxFont curfont(m_dc.GetFont());
	curfont.SetStyle(wxFONTSTYLE_NORMAL);
	curfont.SetWeight(wxFONTWEIGHT_NORMAL);
	m_dc.SetFont(curfont);

	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::SetPos(const wxPoint& pos)
{
	m_curpos = pos;
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::MovePos(const wxSize& delta)
{
	m_curpos += delta;
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::SetY(int ypos)
{
	m_curpos.y = ypos;
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::MoveY(int ydelta)
{
	m_curpos.y += ydelta;
	return *this;
}

void pxWindowTextWriter::_DoWriteLn(const wxString& msg)
{
	int tWidth, tHeight;
	m_dc.GetMultiLineTextExtent(msg, &tWidth, &tHeight);

	wxPoint dispos(m_curpos);

	if (m_align & wxALIGN_CENTER_HORIZONTAL)
	{
		dispos.x = (m_dc.GetSize().GetWidth() - tWidth) / 2;
	}
	else if (m_align & wxALIGN_RIGHT)
	{
		dispos.x = m_dc.GetSize().GetWidth() - tWidth;
	}

	m_dc.DrawText(msg, dispos);
	m_curpos.y += tHeight + m_leading;
}

// Splits incoming multi-line strings into pieces, and dispatches each line individually
// to the text writer.
void pxWindowTextWriter::_DoWrite(const wxChar* msg)
{
	pxAssert(msg);

	wxArrayString parts;
	SplitString(parts, msg, L'\n');

	for (size_t i = 0; i < parts.GetCount(); ++i)
		_DoWriteLn(parts[i]);
}

pxWindowTextWriter& pxWindowTextWriter::SetFont(const wxFont& font)
{
	m_dc.SetFont(font);
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::Align(const wxAlignment& align)
{
	m_align = align;
	m_curpos.x = 0;
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::WriteLn()
{
	_DoWriteLn(L"");
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::WriteLn(const wxChar* fmt)
{
	_DoWrite(fmt);
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::FormatLn(const wxChar* fmt, ...)
{
	va_list args;
	va_start(args, fmt);
	_DoWrite(pxsFmtV(fmt, args));
	va_end(args);
	return *this;
}

pxWindowTextWriter& pxWindowTextWriter::WriteLn(const wxString fmt)
{
	_DoWrite(fmt.wc_str());
	return *this;
}