// $Revision: 1.3 $
// Copyright (c) 1995 Taligent, Inc.  All rights reserved.

#ifndef TaligentSamples_SAMPLEPAGENUMBERCOMPOSITOR
#include "SamplePageNumberCompositor.h"
#endif

#ifndef Taligent_ASSERTIONS
#include <Taligent/Assertions.h>
#endif

#ifndef Taligent_STANDARDTEXT
#include <Taligent/StandardText.h>
#endif

#ifndef Taligent_TEXTDISPLAY
#include <Taligent/TextDisplay.h>
#endif

#ifndef Taligent_NUMBERFORMAT
#include <Taligent/NumberFormat.h>
#endif

MCollectibleDefinitionsMacro(TSamplePageNumberCompositor, kOriginalVersion);

TSamplePageNumberCompositor::TSamplePageNumberCompositor(
    TPageIterator* sourceAlias,
    ENumberLocation numberLocation)
    : fSourcePages(sourceAlias),
    fNumberLocation(numberLocation)
{
}

TSamplePageNumberCompositor::~TSamplePageNumberCompositor()
{
}

unsigned long
TSamplePageNumberCompositor::Count() const
{
    Assertion(fSourcePages != NIL);

    return fSourcePages->Count();
}

TPage*
TSamplePageNumberCompositor::Seek(unsigned long pageNumber)
{
    Assertion(fSourcePages != NIL);
    
    return fSourcePages->Seek(pageNumber) ? (TPage*)this : NIL;
}

TPage*
TSamplePageNumberCompositor::Current() const
{
    Assertion(fSourcePages != NIL);

    return fSourcePages->Current() ? (TPage*)this : NIL;
}

unsigned long
TSamplePageNumberCompositor::GetPageNumber() const
{
    Assertion(fSourcePages != NIL);

    TPage* page = fSourcePages->Current();
    Assertion(page != NIL);

    return page->GetPageNumber();
}

TPageDescription*
TSamplePageNumberCompositor::GetPageDescription() const
{
    Assertion(fSourcePages != NIL);

    TPage* page = fSourcePages->Current();
    Assertion(page != NIL);

    return page->GetPageDescription();
}

void
TSamplePageNumberCompositor::Draw(TGrafPort& port) const
{
    Assertion(fSourcePages != NIL);

    TPage* page = fSourcePages->Current();
    page->Draw(port);

    unsigned long pageNumber = page->GetPageNumber();

    TStandardText pageNumberText;
    TUniversalNumberFormatter formatter;
    formatter.Format(TFormattableNumber(pageNumber), pageNumberText);

    TTextDisplay pageNumberDisplay(pageNumberText);
    TGRect pageNumberBounds = pageNumberDisplay.GetTextBounds();

    TPageDescription* pageDescription = page->GetPageDescription();
    TGRect printableBounds = pageDescription->GetPrintableRect();

    TGPoint offset = TGPoint::kOrigin;
    switch (fNumberLocation) {
      case kTopLeft:
      case kTopCenter:
      case kTopRight:
        offset.fY = printableBounds.fTop - pageNumberBounds.fTop;
        break;

      case kBottomLeft:
      case kBottomCenter:
      case kBottomRight:
        offset.fY = printableBounds.fBottom - pageNumberBounds.fBottom;
        break;

      default:
        break;
    }
    
    switch (fNumberLocation) {
      case kTopLeft:
      case kBottomLeft:
        offset.fX = printableBounds.fLeft - pageNumberBounds.fLeft;
        break;

      case kTopCenter:
      case kBottomCenter:
        offset.fX = (printableBounds.fLeft + printableBounds.fRight - pageNumberBounds.fLeft - pageNumberBounds.fRight) / 2.0;
        break;

      case kTopRight:
      case kBottomRight:
        offset.fX = printableBounds.fRight - pageNumberBounds.fRight;
        break;

      default:
        break;
    }

    pageNumberDisplay.SetOrigin(offset);
    pageNumberDisplay.Draw(port);
}

TSamplePageNumberCompositor::TSamplePageNumberCompositor()
    : fSourcePages(NIL), fNumberLocation(kTopLeft)
{
}

TSamplePageNumberCompositor::TSamplePageNumberCompositor(const TSamplePageNumberCompositor& source)
    : fSourcePages(NIL), fNumberLocation(kTopLeft)
{
}

TSamplePageNumberCompositor&
TSamplePageNumberCompositor::operator=(const TSamplePageNumberCompositor& source)
{
    return *this;
}