/*

www.sourceforge.net/projects/dfhack

Copyright (c) 2009 Petr Mrázek (peterix), Kenneth Ferland (Impaler[WrG]), dorf

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any

damages arising from the use of this software.

Permission is granted to anyone to use this software for any

purpose, including commercial applications, and to alter it and

redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must

not claim that you wrote the original software. If you use this

software in a product, an acknowledgment in the product documentation

would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and

must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source

distribution.

*/

#include "Internal.h"

#include "ContextShared.h"

#include "dfhack/modules/Gui.h"

#include "dfhack/DFProcess.h"

#include "dfhack/VersionInfo.h"

#include "dfhack/DFTypes.h"

using namespace DFHack;

struct Gui::Private

{

Private()

{

Started = PauseInited = ViewScreeInited = MenuStateInited = false;

}

bool Started;

uint32_t pause_state_offset;

bool PauseInited;

uint32_t view_screen_offset;

bool ViewScreeInited;

uint32_t current_menu_state_offset;

bool MenuStateInited;

DFContextShared *d;

Process * owner;

};

Gui::Gui(DFContextShared * _d)

{

d = new Private;

d->d = _d;

d->owner = _d->p;

OffsetGroup * OG_Gui = d->d->offset_descriptor->getGroup("GUI");

try

{

d->current_menu_state_offset = OG_Gui->getAddress("current_menu_state");

d->MenuStateInited = true;

}

catch(exception &){};

try

{

d->pause_state_offset = OG_Gui->getAddress ("pause_state");

d->PauseInited = true;

}

catch(exception &){};

try

{

d->view_screen_offset = OG_Gui->getAddress ("view_screen");

d->ViewScreeInited = true;

}

catch(exception &){};

d->Started = true;

}

Gui::~Gui()

{

delete d;

}

bool Gui::Start()

{

return true;

}

bool Gui::Finish()

{

return true;

}

bool Gui::ReadPauseState()

{

// replace with an exception

if(!d->PauseInited) return false;

uint32_t pauseState = d->owner->readDWord (d->pause_state_offset);

return pauseState & 1;

}

uint32_t Gui::ReadMenuState()

{

if(d->MenuStateInited)

return(d->owner->readDWord(d->current_menu_state_offset));

return false;

}

bool Gui::ReadViewScreen (t_viewscreen &screen)

{

if (!d->ViewScreeInited) return false;

Process * p = d->owner;

uint32_t last = p->readDWord (d->view_screen_offset);

uint32_t screenAddr = p->readDWord (last);

uint32_t nextScreenPtr = p->readDWord (last + 4);

while (nextScreenPtr != 0)

{

last = nextScreenPtr;

screenAddr = p->readDWord (nextScreenPtr);

nextScreenPtr = p->readDWord (nextScreenPtr + 4);

}

return d->d->offset_descriptor->resolveObjectToClassID (last, screen.type);

}