/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sd.hxx"


#include "fuzoom.hxx"

#include <svx/svxids.hrc>
#include <sfx2/bindings.hxx>
#include <sfx2/viewfrm.hxx>
#include "app.hrc"
#include <svx/svdpagv.hxx>

#ifndef SD_FRAMW_VIEW_HXX
#include "FrameView.hxx"
#endif
#include "ViewShell.hxx"
#include "View.hxx"
#ifndef SD_WINDOW_SHELL_HXX
#include "Window.hxx"
#endif
#include "drawdoc.hxx"
#include "zoomlist.hxx"

namespace sd {

sal_uInt16 SidArrayZoom[] = {
					SID_ATTR_ZOOM,
					SID_ZOOM_OUT,
					SID_ZOOM_IN,
					0 };

TYPEINIT1( FuZoom, FuPoor );

/*************************************************************************
|*
|* Konstruktor
|*
\************************************************************************/

FuZoom::FuZoom(
    ViewShell* pViewSh,
    ::sd::Window* pWin,
    ::sd::View* pView,
    SdDrawDocument*	pDoc,
    SfxRequest& rReq) 
    : FuPoor(pViewSh, pWin, pView, pDoc, rReq),
      bVisible(sal_False),
      bStartDrag(sal_False)
{
}

/*************************************************************************
|*
|* Destruktor
|*
\************************************************************************/

FuZoom::~FuZoom()
{
	if (bVisible)
	{
		// Hide ZoomRect
		mpViewShell->DrawMarkRect(aZoomRect);

		bVisible = sal_False;
		bStartDrag = sal_False;
	}
}

FunctionReference FuZoom::Create( ViewShell* pViewSh, ::sd::Window* pWin, ::sd::View* pView, SdDrawDocument* pDoc, SfxRequest& rReq )
{
	FunctionReference xFunc( new FuZoom( pViewSh, pWin, pView, pDoc, rReq ) );
	return xFunc;
}

/*************************************************************************
|*
|* MouseButtonDown-event
|*
\************************************************************************/

sal_Bool FuZoom::MouseButtonDown(const MouseEvent& rMEvt)
{
	// #95491# remember button state for creation of own MouseEvents
	SetMouseButtonCode(rMEvt.GetButtons());

	mpWindow->CaptureMouse();
	bStartDrag = sal_True;

	aBeginPosPix = rMEvt.GetPosPixel();
	aBeginPos = mpWindow->PixelToLogic(aBeginPosPix);

	return sal_True;
}

/*************************************************************************
|*
|* MouseMove-event
|*
\************************************************************************/

sal_Bool FuZoom::MouseMove(const MouseEvent& rMEvt)
{
	if (bStartDrag)
	{
		if (bVisible)
		{
			mpViewShell->DrawMarkRect(aZoomRect);
		}

		Point aPosPix = rMEvt.GetPosPixel();
		ForceScroll(aPosPix);

		aEndPos = mpWindow->PixelToLogic(aPosPix);
		aBeginPos = mpWindow->PixelToLogic(aBeginPosPix);

		if (nSlotId == SID_ZOOM_PANNING)
		{
			// Panning

			Point aScroll = aBeginPos - aEndPos;

			// #i2237#
			// removed old stuff here which still forced zoom to be
			// %BRUSH_SIZE which is outdated now

			if (aScroll.X() != 0 || aScroll.Y() != 0)
			{
				Size aWorkSize = mpView->GetWorkArea().GetSize();
				Size aPageSize = mpView->GetSdrPageView()->GetPage()->GetSize();
				aScroll.X() /= aWorkSize.Width()  / aPageSize.Width();
				aScroll.Y() /= aWorkSize.Height() / aPageSize.Height();
				mpViewShell->Scroll(aScroll.X(), aScroll.Y());
				aBeginPosPix = aPosPix;
			}
		}
		else
		{
			Rectangle aRect(aBeginPos, aEndPos);
			aZoomRect = aRect;
			aZoomRect.Justify();
			mpViewShell->DrawMarkRect(aZoomRect);
		}

		bVisible = sal_True;
	}

	return bStartDrag;
}

/*************************************************************************
|*
|* MouseButtonUp-event
|*
\************************************************************************/

sal_Bool FuZoom::MouseButtonUp(const MouseEvent& rMEvt)
{
	// #95491# remember button state for creation of own MouseEvents
	SetMouseButtonCode(rMEvt.GetButtons());

	if (bVisible)
	{
		// Hide ZoomRect
		mpViewShell->DrawMarkRect(aZoomRect);
		bVisible = sal_False;
	}

	Point aPosPix = rMEvt.GetPosPixel();

	if(SID_ZOOM_PANNING != nSlotId)
	{
		// Zoom
		Size aZoomSizePixel = mpWindow->LogicToPixel(aZoomRect).GetSize();
		sal_uLong nTol = DRGPIX + DRGPIX;

		if ( aZoomSizePixel.Width() < (long) nTol && aZoomSizePixel.Height() < (long) nTol )
		{
			// Klick auf der Stelle: Zoomfaktor verdoppeln
			Point aPos = mpWindow->PixelToLogic(aPosPix);
			Size aSize = mpWindow->PixelToLogic(mpWindow->GetOutputSizePixel());
			aSize.Width() /= 2;
			aSize.Height() /= 2;
			aPos.X() -= aSize.Width() / 2;
			aPos.Y() -= aSize.Height() / 2;
			aZoomRect.SetPos(aPos);
			aZoomRect.SetSize(aSize);
		}

		mpViewShell->SetZoomRect(aZoomRect);
	}

	Rectangle aVisAreaWin = mpWindow->PixelToLogic(Rectangle(Point(0,0),
										   mpWindow->GetOutputSizePixel()));
	mpViewShell->GetZoomList()->InsertZoomRect(aVisAreaWin);

	bStartDrag = sal_False;
	mpWindow->ReleaseMouse();
	mpViewShell->Cancel();

	return sal_True;
}

/*************************************************************************
|*
|* Function aktivieren
|*
\************************************************************************/

void FuZoom::Activate()
{
	aPtr = mpWindow->GetPointer();

	if (nSlotId == SID_ZOOM_PANNING)
	{
		mpWindow->SetPointer(Pointer(POINTER_HAND));
	}
	else
	{
		mpWindow->SetPointer(Pointer(POINTER_MAGNIFY));
	}
}

/*************************************************************************
|*
|* Function deaktivieren
|*
\************************************************************************/

void FuZoom::Deactivate()
{
	mpWindow->SetPointer( aPtr );
	mpViewShell->GetViewFrame()->GetBindings().Invalidate( SidArrayZoom );
}
} // end of namespace sd