// Copyright 1999
// College of Computer Science
// Northeastern University Boston MA 02115

// This software may be used for educational purposes as long as this copyright
// notice is retained at the top of all files

// Should this software be modified, the words "Modified from Original" must be
// included as a comment below this notice

// All publication rights are retained.  This software or its documentation may
// not be published in any media either in whole or in part.

///////////////////////////////////////////////////////////////////////////////

// GraphicsState.cpp

///////////////////////////////////////////////////////////////////////////////

#include "CoreTools.h"
#include "SystemBase.h"
#include "GraphicsState.h"


void GraphicsState::StartUp() {

	// objects

	Location.       Set(0, 0);				// upper left of window

	PenSize.        Set(1, 1);				// initial size = 1,1
	PenSize.        SetMinAndDef(1, 1);		// minimum size = 1,1

	PenColor.       Set(  0,   0,   0);		// black
	FillColor.      Set(  0,   0,   0);		// black
	TextColor.      Set(  0,   0,   0);		// black
	BackgroundColor.Set(255, 255, 255);		// white

	Transform.		Set(1, 0, 1, 0);		// identity transform

	// scalars

	PenMode			= PM_Normal;

	TextAlign		= HAlign_Left | VAlign_Top;

	BackgroundMode	= BM_Transparent;

	EnableClip		= false;
}


#if defined(CORE_PLATFORM_WIN32)


void WIN32_GraphicsState::StartUp() {
	// set some colors

	RGBdata black(  0,   0,   0);

	// clean up the existing brushes if any

	if(!isfirst)
		CleanUp();

	// initial pen

	xpen = 1;
	ypen = 1;

	// create brushes

	PenBrush
		= CreateSolidBrush(black.Native());

	FillBrush
		= CreateSolidBrush(black.Native());

	// no clip region

	ClipRgn = NULL;

	TextAlign = TA_NOUPDATECP | TA_TOP | TA_LEFT;

	isfirst = false;
}


void WIN32_GraphicsState::CleanUp() {
	// if isfirst then nothing to clean up

	if (isfirst)
		return;

	// delete brushes

	DeleteObject(PenBrush);
	DeleteObject(FillBrush);

	// delete clip region if it exists
	if (ClipRgn != NULL) {
		DeleteObject(ClipRgn);
		ClipRgn = NULL;
	}

	isfirst = true;
}


void WIN32_GraphicsState::SetPenColor(const RGBdata& color) {
	// make sure the whole state is initialized
	if (isfirst)
		StartUp();

	DeleteObject(PenBrush);
	PenBrush = CreateSolidBrush(color.Native());
}


void WIN32_GraphicsState::SetFillColor(const RGBdata& color) {
	// make sure the whole state is initialized
	if (isfirst)
		StartUp();

	DeleteObject(FillBrush);
	FillBrush = CreateSolidBrush(color.Native());
}

#endif	// end WIN32 specific


#if defined(CORE_PLATFORM_MACOS)

#endif	// end MacOS specific