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// -----------------------------------------------------------------------------
// This file is part of Broken Sword 2.5
// Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsd�rfer
//
// Broken Sword 2.5 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 2 of the License, or
// (at your option) any later version.
//
// Broken Sword 2.5 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 Broken Sword 2.5; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
// -----------------------------------------------------------------------------
#define BS_LOG_PREFIX "FONTRESOURCE"
// -----------------------------------------------------------------------------
// Includes
// -----------------------------------------------------------------------------
#include <memory>
#include "sword25/kernel/kernel.h"
#include "sword25/kernel/string.h"
#include "sword25/package/packagemanager.h"
#include <tinyxml.h>
#include "sword25/gfx/fontresource.h"
// -----------------------------------------------------------------------------
// Konstanten
// -----------------------------------------------------------------------------
static const unsigned int DEFAULT_LINEHEIGHT = 20;
static const unsigned int DEFAULT_GAPWIDTH = 1;
// -----------------------------------------------------------------------------
// Konstruktion / Destruktion
// -----------------------------------------------------------------------------
BS_FontResource::BS_FontResource(BS_Kernel* pKernel, const std::string& FileName) :
_pKernel(pKernel),
_Valid(false),
BS_Resource(FileName, BS_Resource::TYPE_FONT)
{
// XML Fontdatei parsen
TiXmlDocument Doc;
if (!_ParseXMLDocument(FileName, Doc))
{
BS_LOG_ERRORLN("The following TinyXML-Error occured while parsing \"%s\": %s", GetFileName().c_str(), Doc.ErrorDesc());
return;
}
// Font-Tag finden
TiXmlElement* pElement = Doc.FirstChildElement("font");
if (!pElement)
{
BS_LOG_ERRORLN("No <font> tag found in \"%s\".", GetFileName().c_str());
return;
}
// Font-Tag parsen
std::string BitmapFileName;
if (!_ParseFontTag(*pElement, BitmapFileName, _LineHeight, _GapWidth))
{
BS_LOG_ERRORLN("An error occurred while parsing <font> tag in \"%s\".", GetFileName().c_str());
return;
}
// Absoluten, eindeutigen Pfad zur Bitmapdatei bestimmen und dabei auf vorhandensein pr�fen
{
// Pointer auf den Package-Manager bekommen
BS_ASSERT(_pKernel);
BS_PackageManager* pPackage = static_cast<BS_PackageManager *>(_pKernel->GetService("package"));
BS_ASSERT(pPackage);
// Absoluten, eindeutigen Pfad bestimmen
_BitmapFileName = pPackage->GetAbsolutePath(BitmapFileName);
if (_BitmapFileName == "")
{
BS_LOG_ERRORLN("Image file \"%s\" was specified in <font> tag of \"%s\" but could not be found.",
_BitmapFileName.c_str(), GetFileName().c_str());
return;
}
// Bitmapdatei cachen
if (!_pKernel->GetResourceManager()->PrecacheResource(_BitmapFileName))
{
BS_LOG_ERRORLN("Could not precache \"%s\".", _BitmapFileName.c_str());
return;
}
}
// Das Erste Character-Tag finden
pElement = pElement->FirstChildElement("character");
if (!pElement)
{
BS_LOG_ERRORLN("No <character> tag found in \"%s\".", GetFileName().c_str());
return;
}
// Alle Character-Tags parsen
while (pElement)
{
int CharCode;
BS_Rect CharRect;
// Aktuelles Character-Tag parsen
if (!_ParseCharacterTag(*pElement, CharCode, CharRect))
{
BS_LOG_ERRORLN("An error occured while parsing a <character> tag in \"%s\".", GetFileName().c_str());
return;
}
// Ausgelesene Daten in das _CharacterRects-Array eintragen
BS_ASSERT(CharCode < 256);
_CharacterRects[CharCode] = CharRect;
// Zum n�chsten Character-Tag iterieren
pElement = pElement->NextSiblingElement("character");
}
// Erfolg signalisieren
_Valid = true;
}
// -----------------------------------------------------------------------------
bool BS_FontResource::_ParseXMLDocument(const std::string & FileName, TiXmlDocument & Doc) const
{
// Pointer auf den Package-Manager bekommen
BS_ASSERT(_pKernel);
BS_PackageManager* pPackage = static_cast<BS_PackageManager *>(_pKernel->GetService("package"));
BS_ASSERT(pPackage);
// Die Daten werden zun�chst �ber den Package-Manager gelesen und dann in einen um ein Byte gr��eren Buffer kopiert
// und NULL-Terminiert, da TinyXML NULL-Terminierte Daten ben�tigt.
unsigned int FileSize;
char * LoadBuffer = (char*) pPackage->GetFile(GetFileName(), &FileSize);
if (!LoadBuffer)
{
BS_LOG_ERRORLN("Could not read \"%s\".", GetFileName().c_str());
return false;
}
// Daten kopieren und NULL-terminieren
std::vector<char> WorkBuffer(FileSize + 1);
memcpy(&WorkBuffer[0], LoadBuffer, FileSize);
delete LoadBuffer;
WorkBuffer[FileSize] = '\0';
// Daten parsen
Doc.Parse(&WorkBuffer[0]);
return !Doc.Error();
}
// -----------------------------------------------------------------------------
bool BS_FontResource::_ParseFontTag(TiXmlElement & Tag, std::string & BitmapFileName, int & Lineheight, int & GapWidth) const
{
// Bitmap Attribut auslesen
const char * BitmapString = Tag.Attribute("bitmap");
if (!BitmapString)
{
BS_LOG_ERRORLN("<font> tag without bitmap attribute occurred in \"%s\".", GetFileName().c_str());
return false;
}
BitmapFileName = BitmapString;
// Lineheight Attribut auslesen
const char * LineheightString = Tag.Attribute("lineheight");
if (!LineheightString || !BS_String::ToInt(std::string(LineheightString), Lineheight) || Lineheight < 0)
{
BS_LOG_WARNINGLN("Illegal or missing lineheight attribute in <font> tag in \"%s\". Assuming default (\"%d\").",
GetFileName().c_str(), DEFAULT_LINEHEIGHT);
Lineheight = DEFAULT_LINEHEIGHT;
}
// Gap Attribut auslesen
const char * GapString = Tag.Attribute("gap");
if (!GapString || !BS_String::ToInt(std::string(GapString), GapWidth) || GapWidth < 0)
{
BS_LOG_WARNINGLN("Illegal or missing gap attribute in <font> tag in \"%s\". Assuming default (\"%d\").",
GetFileName().c_str(), DEFAULT_GAPWIDTH);
GapWidth = DEFAULT_GAPWIDTH;
}
return true;
}
// -----------------------------------------------------------------------------
bool BS_FontResource::_ParseCharacterTag(TiXmlElement & Tag, int & Code, BS_Rect & Rect) const
{
// Code Attribut auslesen
const char * CodeString = Tag.Attribute("code");
if (!CodeString || !BS_String::ToInt(std::string(CodeString), Code) || Code < 0 || Code >= 256)
{
BS_LOG_ERRORLN("Illegal or missing code attribute in <character> tag in \"%s\".", GetFileName().c_str());
return false;
}
// Left Attribut auslesen
const char * LeftString = Tag.Attribute("left");
if (!LeftString || !BS_String::ToInt(std::string(LeftString), Rect.left) || Rect.left < 0)
{
BS_LOG_ERRORLN("Illegal or missing left attribute in <character> tag in \"%s\".", GetFileName().c_str());
return false;
}
// Right Attribut auslesen
const char * RightString = Tag.Attribute("right");
if (!RightString || !BS_String::ToInt(RightString, Rect.right) || Rect.right < 0)
{
BS_LOG_ERRORLN("Illegal or missing right attribute in <character> tag in \"%s\".", GetFileName().c_str());
return false;
}
// Top Attribut auslesen
const char * TopString = Tag.Attribute("top");
if (!TopString || !BS_String::ToInt(TopString, Rect.top) || Rect.top < 0)
{
BS_LOG_ERRORLN("Illegal or missing top attribute in <character> tag in \"%s\".", GetFileName().c_str());
return false;
}
// Bottom Attribut auslesen
const char * BottomString = Tag.Attribute("bottom");
if (!BottomString || !BS_String::ToInt(BottomString, Rect.bottom) || Rect.bottom < 0)
{
BS_LOG_ERRORLN("Illegal or missing bottom attribute in <character> tag in \"%s\".", GetFileName().c_str());
return false;
}
return true;
}
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