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 * to you under the Apache License, Version 2.0 (the
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 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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#include "precompiled_sd.hxx"

#include "view/SlsPageObjectLayouter.hxx"

#include "model/SlsPageDescriptor.hxx"
#include "view/SlsFontProvider.hxx"
#include "view/SlsTheme.hxx"
#include "tools/IconCache.hxx"
#include "Window.hxx"
#include "res_bmp.hrc"

namespace sd { namespace slidesorter { namespace view {

namespace {
const static sal_Int32 gnLeftPageNumberOffset = 2;
const static sal_Int32 gnRightPageNumberOffset = 5;
const static sal_Int32 gnOuterBorderWidth = 5;
const static sal_Int32 gnInfoAreaMinWidth = 26;
}

PageObjectLayouter::PageObjectLayouter (
	const ::boost::shared_ptr<Theme>& rpTheme,
	const Size& rPageObjectWindowSize,
	const Size& rPageSize,
	const SharedSdWindow& rpWindow,
	const sal_Int32 nPageCount)
	: mpWindow(rpWindow),
	  maPageObjectSize(rPageObjectWindowSize.Width(), rPageObjectWindowSize.Height()),
	  mnModelToWindowScale(1),
	  maPageObjectBoundingBox(),
	  maPageNumberAreaBoundingBox(),
	  maPreviewBoundingBox(),
	  maTransitionEffectBoundingBox(),
	  maTransitionEffectIcon(IconCache::Instance().GetIcon(BMP_FADE_EFFECT_INDICATOR)),
	  mpPageNumberFont(Theme::GetFont(Theme::Font_PageNumber, *rpWindow))
{
	const Size aPageNumberAreaSize (GetPageNumberAreaSize(nPageCount));

	const int nMaximumBorderWidth (gnOuterBorderWidth);
	const int nFocusIndicatorWidth (rpTheme->GetIntegerValue(Theme::Integer_FocusIndicatorWidth));

	maPreviewBoundingBox = CalculatePreviewBoundingBox(
		maPageObjectSize,
		Size(rPageSize.Width(), rPageSize.Height()),
		aPageNumberAreaSize.Width(),
		nFocusIndicatorWidth);
	maFocusIndicatorBoundingBox = Rectangle(Point(0,0), maPageObjectSize);
	maPageObjectBoundingBox = Rectangle(
		Point(
			nFocusIndicatorWidth,
			nFocusIndicatorWidth),
		Size(
			maPageObjectSize.Width()-2*nFocusIndicatorWidth,
			maPageObjectSize.Height()-2*nFocusIndicatorWidth));

	maPageNumberAreaBoundingBox = Rectangle(
		Point(
			std::max(gnLeftPageNumberOffset,
				sal_Int32(maPreviewBoundingBox.Left()
				- gnRightPageNumberOffset
				- aPageNumberAreaSize.Width())),
			nMaximumBorderWidth),
		aPageNumberAreaSize);

	const Size aIconSize (maTransitionEffectIcon.GetSizePixel());
	maTransitionEffectBoundingBox = Rectangle(
		Point(
			(maPreviewBoundingBox.Left() - aIconSize.Width()) / 2,
			maPreviewBoundingBox.Bottom() - aIconSize.Height()),
		aIconSize);
}




PageObjectLayouter::~PageObjectLayouter(void)
{
}




Rectangle PageObjectLayouter::CalculatePreviewBoundingBox (
	Size& rPageObjectSize,
	const Size& rPageSize,
	const sal_Int32 nPageNumberAreaWidth,
	const sal_Int32 nFocusIndicatorWidth)
{
	const sal_Int32 nIconWidth (maTransitionEffectIcon.GetSizePixel().Width());
	const sal_Int32 nLeftAreaWidth (
		::std::max(
			gnInfoAreaMinWidth,
			gnRightPageNumberOffset
				+ ::std::max(
					nPageNumberAreaWidth,
					nIconWidth)));
	sal_Int32 nPreviewWidth;
	sal_Int32 nPreviewHeight;
	const double nPageAspectRatio (double(rPageSize.Width()) / double(rPageSize.Height()));
	if (rPageObjectSize.Height() == 0)
	{
		// Calculate height so that the preview fills the available
		// horizontal space completely while observing the aspect ratio of
		// the preview.
		nPreviewWidth = rPageObjectSize.Width()
			- nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
		nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
		rPageObjectSize.setHeight(nPreviewHeight + 2*gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);
	}
	else if (rPageObjectSize.Width() == 0)
	{
		// Calculate the width of the page object so that the preview fills
		// the available vertical space completely while observing the
		// aspect ratio of the preview.
		nPreviewHeight = rPageObjectSize.Height() - 2*gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
		nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
		rPageObjectSize.setWidth(nPreviewWidth
			+ nLeftAreaWidth + gnOuterBorderWidth + 2*nFocusIndicatorWidth + 1);

	}
	else
	{
		// The size of the page object is given. Calculate the size of the
		// preview.
		nPreviewWidth = rPageObjectSize.Width()
			- nLeftAreaWidth - gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
		nPreviewHeight = rPageObjectSize.Height()
			- gnOuterBorderWidth - 2*nFocusIndicatorWidth - 1;
		if (double(nPreviewWidth)/double(nPreviewHeight) > nPageAspectRatio)
			nPreviewWidth = ::basegfx::fround(nPreviewHeight * nPageAspectRatio);
		else
			nPreviewHeight = ::basegfx::fround(nPreviewWidth / nPageAspectRatio);
	}
	// When the preview does not fill the available space completely then
	// place it flush right and vertically centered.
	const int nLeft (rPageObjectSize.Width()
		- gnOuterBorderWidth - nPreviewWidth - nFocusIndicatorWidth - 1);
	const int nTop ((rPageObjectSize.Height() - nPreviewHeight)/2);
	return Rectangle(
		nLeft,
		nTop,
		nLeft + nPreviewWidth,
		nTop + nPreviewHeight);
}




Rectangle PageObjectLayouter::GetBoundingBox (
	const model::SharedPageDescriptor& rpPageDescriptor,
	const Part ePart,
	const CoordinateSystem eCoordinateSystem)
{
	OSL_ASSERT(rpPageDescriptor);
	Point aLocation (rpPageDescriptor ? rpPageDescriptor->GetLocation() : Point(0,0));
	return GetBoundingBox(aLocation, ePart, eCoordinateSystem);
}




Rectangle PageObjectLayouter::GetBoundingBox (
	const Point& rPageObjectLocation,
	const Part ePart,
	const CoordinateSystem eCoordinateSystem)
{
	Rectangle aBoundingBox;
	switch (ePart)
	{
		case FocusIndicator:
			aBoundingBox = maFocusIndicatorBoundingBox;
			break;

		case PageObject:
		case MouseOverIndicator:
			aBoundingBox = maPageObjectBoundingBox;
			break;

		case Preview:
			aBoundingBox = maPreviewBoundingBox;
			break;

		case PageNumber:
			aBoundingBox = maPageNumberAreaBoundingBox;
			break;

		case Name:
			aBoundingBox = maPageNumberAreaBoundingBox;
			break;

		case TransitionEffectIndicator:
			aBoundingBox = maTransitionEffectBoundingBox;
			break;
	}

	// Adapt coordinates to the requested coordinate system.
	Point aLocation (rPageObjectLocation);
	if (eCoordinateSystem == WindowCoordinateSystem)
		aLocation += mpWindow->GetMapMode().GetOrigin();

	return Rectangle(
		aBoundingBox.TopLeft() + aLocation,
		aBoundingBox.BottomRight() + aLocation);
}




Size PageObjectLayouter::GetSize (
	const Part ePart,
	const CoordinateSystem eCoordinateSystem)
{
	return GetBoundingBox(Point(0,0), ePart, eCoordinateSystem).GetSize();
}




Size PageObjectLayouter::GetPageNumberAreaSize (const int nPageCount)
{
	OSL_ASSERT(mpWindow);

	// Set the correct font.
	Font aOriginalFont (mpWindow->GetFont());
	if (mpPageNumberFont)
		mpWindow->SetFont(*mpPageNumberFont);

	String sPageNumberTemplate;
	if (nPageCount < 10)
		sPageNumberTemplate = String::CreateFromAscii("9");
	else if (nPageCount < 100)
		sPageNumberTemplate = String::CreateFromAscii("99");
	else if (nPageCount < 200)
		// Just for the case that 1 is narrower than 9.
		sPageNumberTemplate = String::CreateFromAscii("199");
	else if (nPageCount < 1000)
		sPageNumberTemplate = String::CreateFromAscii("999");
	else
		sPageNumberTemplate = String::CreateFromAscii("9999");
	// More than 9999 pages are not handled.

	const Size aSize (
		mpWindow->GetTextWidth(sPageNumberTemplate),
		mpWindow->GetTextHeight());

	mpWindow->SetFont(aOriginalFont);

	return aSize;
}




Image PageObjectLayouter::GetTransitionEffectIcon (void) const
{
	return maTransitionEffectIcon;
}


} } } // end of namespace ::sd::slidesorter::view