text: /*
   * OpenClonk, http://www.openclonk.org
   *
   * Copyright (c) 2001-2009, RedWolf Design GmbH, http://www.clonk.de/
   * Copyright (c) 2009-2016, The OpenClonk Team and contributors
   *
   * Distributed under the terms of the ISC license; see accompanying file
   * "COPYING" for details.
   *
   * "Clonk" is a registered trademark of Matthes Bender, used with permission.
   * See accompanying file "TRADEMARK" for details.
   *
   * To redistribute this file separately, substitute the full license texts
   * for the above references.
   */
  // generic user interface
  // all generic classes that do not fit into other C4Gui*-files
  
  #include "C4Include.h"
  #include "gui/C4Gui.h"
  
  #include "game/C4Application.h"
  #include "game/C4FullScreen.h"
  #include "game/C4GraphicsSystem.h"
  #include "game/C4Viewport.h"
  #include "graphics/C4Draw.h"
  #include "graphics/C4GraphicsResource.h"
  #include "gui/C4LoaderScreen.h"
  #include "gui/C4MouseControl.h"
  #include "platform/C4GamePadCon.h"
  
  namespace C4GUI
  {
  
  // --------------------------------------------------
  // Generic helpers
  
  	bool ExpandHotkeyMarkup(StdStrBuf &sText, uint32_t &rcHotkey, bool for_tooltip)
  	{
  		const char *HotkeyMarkup = (for_tooltip ? "<c ff800000>%s</c>" : "<c ffffff7f>%s</c>");
  
  		StdStrBuf output;
  
  		const char *input = sText.getData();
  		rcHotkey = 0;
  
  		// Iterate over all input characters
  		while (input && *input)
  		{
  			if (*input != '&')
  			{
  				// This will correctly copy UTF-8 chars too
  				output.AppendChar(*input++);
  			}
  			else
  			{
  				++input;
  				if (*input == '\0' || *input == '&')
  				{
  					// If the ampersand is followed by another ampersand, or it is the last character, copy it verbatimly
  					// Note: This means you can't use an ampersand as an accelerator key.
  					output.AppendChar(*input);
  				}
  				else
  				{
  					// Store the start of the hotkey so we can copy it later
  					const char *accel_start = input;
  					rcHotkey = GetNextCharacter(&input);
  					// Using std::string because StdStrBuf doesn't have a ctor from two iterators
  					std::string accel(accel_start, input);
  					output.AppendFormat(HotkeyMarkup, accel.c_str());
  
  					// Converting a char code to upper case isn't trivial for unicode. (This should really just use ICU.)
  					if (Inside(rcHotkey, static_cast<uint32_t>('a'), static_cast<uint32_t>('z')))
  					{
  						rcHotkey += static_cast<uint32_t>('A') - 'a';
  					} 
  					else if (!Inside(rcHotkey, static_cast<uint32_t>('A'), static_cast<uint32_t>('Z')))
  					{
  						// Warn about accelerator keys outside the basic latin alphabet.
  						LogF(LoadResStr("IDS_ERR_UNSUPPORTED_ACCELERATOR"), accel.c_str(), sText.getData());
  					}
  				}
  			}
  		}
  
  		if (rcHotkey == 0)
  		{
  			// No accelerator found
  			return false;
  		}
  
  		sText.Take(output);
  		// done, success
  		return true;
  	}
  
  	DWORD MakeColorReadableOnBlack(DWORD &rdwClr)
  	{
  		// max alpha
  		DWORD dwAlpha = std::max<DWORD>(rdwClr>>24&255, 0xff)<<24;
  		rdwClr &= 0xffffff;
  		// determine brightness
  		// 50% red, 87% green, 27% blue (max 164 * 255)
  		DWORD r=(rdwClr>>16&255), g=(rdwClr>>8&255), b=(rdwClr&255);
  		int32_t iLightness = r*50 + g*87 + b*27;
  		// above 65/164 (*255) is OK
  		if (iLightness < 16575)
  		{
  			int32_t iInc = (16575-iLightness) / 164;
  			// otherwise, lighten
  			rdwClr = (std::min<DWORD>(r+iInc, 255)<<16) | (std::min<DWORD>(g+iInc, 255)<<8) | std::min<DWORD>(b+iInc, 255);
  		}
  		// return color and alpha
  		rdwClr |= dwAlpha;
  		return rdwClr;
  	}
  
  	void DynBarFacet::SetHorizontal(C4Surface &rBySfc, int iHeight, int iBorderWidth)
  	{
  		if (!iHeight) iHeight = rBySfc.Hgt;
  		if (!iBorderWidth) iBorderWidth = iHeight;
  		fctBegin.Set(&rBySfc,0,0,iBorderWidth,iHeight);
  		fctMiddle.Set(&rBySfc,iBorderWidth,0,rBySfc.Wdt-2*iBorderWidth,iHeight);
  		fctEnd.Set(&rBySfc,rBySfc.Wdt-iBorderWidth,0,iBorderWidth,iHeight);
  	}
  
  	void DynBarFacet::SetHorizontal(C4Facet &rByFct, int32_t iBorderWidth)
  	{
  		if (!iBorderWidth) iBorderWidth = rByFct.Hgt;
  		fctBegin.Set(rByFct.Surface,rByFct.X,rByFct.Y,iBorderWidth,rByFct.Hgt);
  		fctMiddle.Set(rByFct.Surface,rByFct.Hgt,rByFct.X,rByFct.Y+rByFct.Wdt-2*iBorderWidth,rByFct.Hgt);
  		fctEnd.Set(rByFct.Surface,rByFct.X+rByFct.Wdt-iBorderWidth,rByFct.Y,iBorderWidth,rByFct.Hgt);
  	}
  
  	void ScrollBarFacets::Set(const C4Facet &rByFct, int32_t iPinIndex)
  	{
  		// set by hardcoded size
  		barScroll.fctBegin.Set(rByFct.Surface,0,0,16,16);
  		barScroll.fctMiddle.Set(rByFct.Surface,0,16,16,16);
  		barScroll.fctEnd.Set(rByFct.Surface,0,32,16,16);
  		fctScrollDTop.Set(rByFct.Surface,16,0,16,16);
  		if (iPinIndex)
  			fctScrollPin.Set(rByFct.Surface,32,16*(iPinIndex-1),16,16);
  		else
  			fctScrollPin.Set(rByFct.Surface,16,16,16,16);
  		fctScrollDBottom.Set(rByFct.Surface,16,32,16,16);
  	}
  
  // --------------------------------------------------
  // Element
  
  	Element::Element()
  	{
  		// pParent=nullptr invalidates pPrev/pNext
  		// fDragging=false invalidates iDragX/Y
  		// zero fields
  		rcBounds.Set(0,0,0,0);
  	}
  
  	Element::~Element()
  	{
  		// delete context handler
  		if (pContextHandler) { pContextHandler->DeRef(); pContextHandler=nullptr; }
  		// remove from any container
  		if (pParent)
  			pParent->RemoveElement(this);
  		else if (this != Screen::GetScreenS() && Screen::GetScreenS())
  			// always ensure removal from screen!
  			Screen::GetScreenS()->RemoveElement(this);
  	}
  
  	void Element::RemoveElement(Element *pChild)
  	{
  		// child removed: forward to parent
  		if (pParent)
  			pParent->RemoveElement(pChild);
  		else if (this != Screen::GetScreenS())
  			// always ensure removal from screen!
  			// but not if this is the context menu, to avoid endless flip-flop!
  			if (!IsMenu())
  				Screen::GetScreenS()->RemoveElement(pChild);
  	}
  
  	void Element::UpdateSize()
  	{
  		// update own fields
  		UpdateOwnPos();
  		// notify container
  		if (pParent) pParent->ElementSizeChanged(this);
  	}
  
  	void Element::UpdatePos()
  	{
  		// update own fields
  		UpdateOwnPos();
  		// notify container
  		if (pParent) pParent->ElementPosChanged(this);
  	}
  
  	bool Element::IsVisible()
  	{
  		// self and parent must be visible
  		return fVisible && (!pParent || pParent->IsVisible());
  	}
  
  	void Element::SetVisibility(bool fToValue)
  	{
  		fVisible = fToValue;
  		// stop mouseover for invisible
  		if (!fVisible)
  		{
  			Screen *pScreen = GetScreen();
  			if (pScreen) pScreen->Mouse.OnElementGetsInvisible(this);
  		}
  	}
  
  	void Element::ScreenPos2ClientPos(int32_t &riX, int32_t &riY)
  	{
  		// apply all parent offsets
  		Container *pCont = pParent;
  		while (pCont)
  		{
  			pCont->ApplyElementOffset(riX, riY);
  			pCont = pCont->GetParent();
  		}
  		// apply own offset
  		riX -= rcBounds.x; riY -= rcBounds.y;
  	}
  
  	void Element::ClientPos2ScreenPos(int32_t &riX, int32_t &riY)
  	{
  		// apply all parent offsets
  		Container *pCont = pParent;
  		while (pCont)
  		{
  			pCont->ApplyInvElementOffset(riX, riY);
  			pCont = pCont->GetParent();
  		}
  		// apply own offset
  		riX += rcBounds.x; riY += rcBounds.y;
  	}
  
  	void Element::MouseInput(CMouse &rMouse, int32_t iButton, int32_t iX, int32_t iY, DWORD dwKeyParam)
  	{
  		// store self as mouse-over-component
  		rMouse.pMouseOverElement = this;
  		// evaluate dragging
  		if (pDragTarget && iButton == C4MC_Button_LeftDown && !rMouse.pDragElement)
  			StartDragging(rMouse, iX, iY, dwKeyParam);
  		// right button down: open context menu
  		if (iButton == C4MC_Button_RightDown)
  		{
  			ContextHandler *pCtx = GetContextHandler();
  			if (pCtx) pCtx->OnContext(this, iX, iY);
  		}
  	}
  
  	void Element::StartDragging(CMouse &rMouse, int32_t iX, int32_t iY, DWORD dwKeyParam)
  	{
  		// set flag
  		fDragging = true;
  		// set drag start pos
  		iDragX = iX; iDragY = iY;
  		// mark drag in mouse
  		rMouse.pDragElement = this;
  	}
  
  	void Element::DoDragging(CMouse &rMouse, int32_t iX, int32_t iY, DWORD dwKeyParam)
  	{
  		// check if anything moved
  		if (pDragTarget && (iX != iDragX || iY != iDragY))
  		{
  			// move position, then
  			pDragTarget->rcBounds.x += iX-iDragX;
  			pDragTarget->rcBounds.y += iY-iDragY;
  			// drag X/Y is up-to-date if this is a child element of the drag target
  			pDragTarget->UpdatePos();
  		}
  	}
  
  	void Element::StopDragging(CMouse &rMouse, int32_t iX, int32_t iY, DWORD dwKeyParam)
  	{
  		// move element pos
  		DoDragging(rMouse, iX, iY, dwKeyParam);
  	}
  
  	Dialog *Element::GetDlg   () { if (pParent) return pParent->GetDlg   (); return nullptr; }
  	Screen *Element::GetScreen() { if (pParent) return pParent->GetScreen(); return nullptr; }
  
  	void Element::Draw3DFrame(C4TargetFacet &cgo, bool fUp, int32_t iIndent, BYTE byAlpha, bool fDrawTop, int32_t iTopOff, bool fDrawLeft, int32_t iLeftOff)
  	{
  		DWORD dwAlpha = byAlpha<<24;
  		int32_t x0 = cgo.TargetX + rcBounds.x + iLeftOff,
  		             y0 = cgo.TargetY + rcBounds.y + iTopOff,
  		                  x1 = cgo.TargetX + rcBounds.x + rcBounds.Wdt - 1,
  		                       y1 = cgo.TargetY + rcBounds.y + rcBounds.Hgt - 1;
  		if (fDrawTop) pDraw->DrawLineDw(cgo.Surface, (float)x0,(float)y0,(float)x1,(float)y0, C4GUI_BorderColor1 | dwAlpha);
  		if (fDrawLeft) pDraw->DrawLineDw(cgo.Surface, (float)x0,(float)y0,(float)x0,(float)y1, C4GUI_BorderColor1 | dwAlpha);
  		if (fDrawTop) pDraw->DrawLineDw(cgo.Surface, (float)(x0+1),(float)(y0+1),(float)(x1-1),(float)(y0+1), C4GUI_BorderColor2 | dwAlpha);
  		if (fDrawLeft) pDraw->DrawLineDw(cgo.Surface, (float)(x0+1),(float)(y0+1),(float)(x0+1),(float)(y1-1), C4GUI_BorderColor2 | dwAlpha);
  		pDraw->DrawLineDw(cgo.Surface, (float)x0,(float)y1,(float)x1,(float)y1, C4GUI_BorderColor3 | dwAlpha);
  		pDraw->DrawLineDw(cgo.Surface, (float)x1,(float)y0,(float)x1,(float)y1, C4GUI_BorderColor3 | dwAlpha);
  		pDraw->DrawLineDw(cgo.Surface, (float)(x0+1),(float)(y1-1),(float)(x1-1),(float)(y1-1), C4GUI_BorderColor1 | dwAlpha);
  		pDraw->DrawLineDw(cgo.Surface, (float)(x1-1),(float)(y0+1),(float)(x1-1),(float)(y1-1), C4GUI_BorderColor1 | dwAlpha);
  	}
  
  	void Element::DrawBar(C4TargetFacet &cgo, DynBarFacet &rFacets)
  	{
  		if (rcBounds.Hgt == rFacets.fctMiddle.Hgt)
  		{
  			// exact bar
  			int32_t x0=cgo.TargetX+rcBounds.x, y0=cgo.TargetY+rcBounds.y;
  			int32_t iX = rFacets.fctBegin.Wdt, w=rFacets.fctMiddle.Wdt, wLeft=rFacets.fctBegin.Wdt, wRight=rFacets.fctEnd.Wdt;
  			int32_t iRightShowLength = wRight/3;
  			bool fOverflow = (wLeft > rcBounds.Wdt);
  			if (fOverflow) rFacets.fctBegin.Wdt = rcBounds.Wdt;
  			rFacets.fctBegin.Draw(cgo.Surface, x0,y0);
  			if (fOverflow) rFacets.fctBegin.Wdt = wLeft;
  			while (iX < rcBounds.Wdt-iRightShowLength)
  			{
  				int32_t w2=std::min(w, rcBounds.Wdt-iRightShowLength-iX); rFacets.fctMiddle.Wdt=w2;
  				rFacets.fctMiddle.Draw(cgo.Surface, x0+iX, y0);
  				iX += w;
  			}
  			rFacets.fctMiddle.Wdt=w;
  			fOverflow = (wRight > rcBounds.Wdt);
  			if (fOverflow)
  			{
  				rFacets.fctEnd.X += wRight - rcBounds.Wdt;
  				rFacets.fctEnd.Wdt = rcBounds.Wdt;
  			}
  			rFacets.fctEnd.Draw(cgo.Surface, x0+rcBounds.Wdt-rFacets.fctEnd.Wdt, y0);
  			if (fOverflow)
  			{
  				rFacets.fctEnd.X -= wRight - rcBounds.Wdt;
  				rFacets.fctEnd.Wdt = wRight;
  			}
  		}
  		else
  		{
  			// zoomed bar
  			float fZoom = (float) rcBounds.Hgt / rFacets.fctMiddle.Hgt;
  			int32_t x0=cgo.TargetX+rcBounds.x, y0=cgo.TargetY+rcBounds.y;
  			int32_t iX = int32_t(fZoom*rFacets.fctBegin.Wdt), w=int32_t(fZoom*rFacets.fctMiddle.Wdt), wOld=rFacets.fctMiddle.Wdt;
  			int32_t iRightShowLength = rFacets.fctEnd.Wdt/3;
  			rFacets.fctBegin.DrawX(cgo.Surface, x0,y0,int32_t(fZoom*rFacets.fctBegin.Wdt),rcBounds.Hgt);
  			while (iX < rcBounds.Wdt-(fZoom*iRightShowLength))
  			{
  				int32_t w2=std::min<int32_t>(w, rcBounds.Wdt-int32_t(fZoom*iRightShowLength)-iX); rFacets.fctMiddle.Wdt=long(float(w2)/fZoom);
  				rFacets.fctMiddle.DrawX(cgo.Surface, x0+iX, y0, w2,rcBounds.Hgt);
  				iX += w;
  			}
  			rFacets.fctMiddle.Wdt=wOld;
  			rFacets.fctEnd.DrawX(cgo.Surface, x0+rcBounds.Wdt-int32_t(fZoom*rFacets.fctEnd.Wdt), y0,int32_t(fZoom*rFacets.fctEnd.Wdt),rcBounds.Hgt);
  		}
  	}
  
  	void Element::DrawVBar(C4TargetFacet &cgo, DynBarFacet &rFacets)
  	{
  		C4DrawTransform trf(1);
  		DrawHVBar(cgo, rFacets, trf, rcBounds.Hgt);
  	}
  
  	void Element::DrawHBarByVGfx(C4TargetFacet &cgo, DynBarFacet &rFacets)
  	{
  		C4DrawTransform trf;
  		float fOffX = cgo.TargetX + rcBounds.x + rcBounds.Hgt/2;
  		float fOffY = cgo.TargetY + rcBounds.y + rcBounds.Hgt/2;
  		trf.SetRotate(-90.0f, fOffX, fOffY);
  
  		DrawHVBar(cgo, rFacets, trf, rcBounds.Wdt);
  	}
  
  	void Element::DrawHVBar(C4TargetFacet &cgo, DynBarFacet &rFacets, C4DrawTransform &trf, int32_t iMiddleLength)
  	{
  		int32_t y0 = cgo.TargetY + rcBounds.y;
  		int32_t x0 = cgo.TargetX + rcBounds.x;
  
  		// draw up arrow
  		rFacets.fctBegin.DrawT(cgo.Surface, x0, y0, 0, 0, &trf);
  
  		// draw middle part
  		int32_t h = rFacets.fctMiddle.Hgt;
  		int32_t barHeight = iMiddleLength - (rFacets.fctBegin.Hgt + rFacets.fctEnd.Hgt);
  
  		for (int32_t iY = 0; iY <= barHeight; iY += h)
  		{
  			int32_t h2 = std::min(h, barHeight - iY);
  			rFacets.fctMiddle.Hgt = h2;
  			rFacets.fctMiddle.DrawT(cgo.Surface, x0, y0 + rFacets.fctBegin.Hgt + iY, 0, 0, &trf);
  		}
  		rFacets.fctMiddle.Hgt = h;
  
  		// draw lower arrow
  		rFacets.fctEnd.DrawT(cgo.Surface, x0, y0 + iMiddleLength - rFacets.fctEnd.Hgt, 0, 0, &trf);
  	}
  
  	C4Rect Element::GetToprightCornerRect(int32_t iWidth, int32_t iHeight, int32_t iHIndent, int32_t iVIndent, int32_t iIndexX)
  	{
  		// bounds by topright corner of element
  		C4Rect rtBounds = (GetContainer() != this) ? GetClientRect() : GetContainedClientRect();
  		rtBounds.x += rtBounds.Wdt - (iWidth + iHIndent) * (iIndexX + 1);
  		rtBounds.y += iVIndent;
  		rtBounds.Wdt = rtBounds.Hgt = iHeight;
  		return rtBounds;
  	}
  
  	void Element::SetToolTip(const char *szNewTooltip, bool is_immediate)
  	{
  		// store tooltip
  		if (szNewTooltip) ToolTip.Copy(szNewTooltip); else ToolTip.Clear();
  		// store immediate flag
  		is_immediate_tooltip = is_immediate;
  	}
  
  	bool Element::DoContext()
  	{
  		if (!pContextHandler) return false;
  		return pContextHandler->OnContext(this, rcBounds.Wdt/2, rcBounds.Hgt/2);
  	}
  
  	const char *Element::GetToolTip()
  	{
  		// fallback to parent tooltip, if own is not assigned
  		return (!pParent || !ToolTip.isNull()) ? ToolTip.getData() : pParent->GetToolTip();
  	}
  
  	ContextHandler *Element::GetContextHandler()
  	{
  		// fallback to parent context, if own is not assigned
  		return (!pParent || pContextHandler) ? pContextHandler : pParent->GetContextHandler();
  	}
  
  	bool Element::IsInActiveDlg(bool fForKeyboard)
  	{
  		// get dlg
  		Dialog *pDlg=GetDlg();
  		if (!pDlg) return false;
  		// check if dlg is active
  		return pDlg->IsActive(fForKeyboard);
  	}
  
  
  // --------------------------------------------------
  // CMouse
  
  	CMouse::CMouse(int32_t iX, int32_t iY) : fActive(true), fActiveInput(false)
  	{
  		// set pos
  		x=iX; y=iY;
  		// reset fields
  		LDown=MDown=RDown=false;
  		dwKeys=0;
  		pMouseOverElement = pPrevMouseOverElement = nullptr;
  		pDragElement = nullptr;
  		ResetToolTipTime();
  		// LDownX/Y initialized upon need
  	}
  
  	CMouse::~CMouse() = default;
  
  	void CMouse::Input(int32_t iButton, int32_t iX, int32_t iY, DWORD dwKeyParam)
  	{
  		// pos changed or click issued?
  		if (iButton || iX!=x || iY!=y)
  		{
  			// then hide tooltips for a while
  			ResetToolTipTime();
  			// and mark as active input device
  			fActiveInput = true;
  		}
  		// copy fields
  		x=iX; y=iY; dwKeys=dwKeyParam;
  		// update buttons
  		switch (iButton)
  		{
  		case C4MC_Button_LeftDown:   LDown=true;  LDownX=x; LDownY=y; break;
  		case C4MC_Button_LeftUp:     LDown=false; break;
  		case C4MC_Button_RightDown:  RDown=true;  break;
  		case C4MC_Button_RightUp:    RDown=false; break;
  		}
  	}
  
  	void CMouse::Draw(C4TargetFacet &cgo, TooltipShowState draw_tool_tips)
  	{
  		// only if owned
  		if (!fActive) return;
  
  		// Make sure to draw the cursor without zoom.
  		ZoomData GuiZoom;
  		pDraw->GetZoom(&GuiZoom);
  		const float oldZoom = GuiZoom.Zoom;
  		GuiZoom.Zoom = 1.0;
  		pDraw->SetZoom(GuiZoom);
  
  		int32_t iOffsetX = -GfxR->fctMouseCursor.Wdt/2;
  		int32_t iOffsetY = -GfxR->fctMouseCursor.Hgt/2;
  		GfxR->fctMouseCursor.Draw(cgo.Surface,x+iOffsetX,y+iOffsetY,0);
  		// ToolTip
  		if (pMouseOverElement && draw_tool_tips != TTST_None)
  		{
  			if (draw_tool_tips == TTST_All || pMouseOverElement->IsImmediateToolTip())
  			{
  				const char *szTip = pMouseOverElement->GetToolTip();
  				if (szTip && *szTip)
  				{
  					C4TargetFacet cgoTip; cgoTip.Set(cgo.Surface, cgo.X, cgo.Y, cgo.Wdt, cgo.Hgt);
  					Screen::DrawToolTip(szTip, cgoTip, x, y);
  				}
  			}
  		}
  
  		// And restore old zoom settings.
  		GuiZoom.Zoom = oldZoom;
  		pDraw->SetZoom(GuiZoom);
  	}
  
  	void CMouse::ReleaseElements()
  	{
  		// release MouseOver
  		if (pMouseOverElement) pMouseOverElement->MouseLeave(*this);
  		// release drag
  		if (pDragElement)
  		{
  			int32_t iX, iY; DWORD dwKeys;
  			GetLastXY(iX, iY, dwKeys);
  			pDragElement->ScreenPos2ClientPos(iX, iY);
  			pDragElement->StopDragging(*this, iX, iY, dwKeys);
  		}
  		pPrevMouseOverElement = pMouseOverElement = pDragElement = nullptr;
  	}
  
  	void CMouse::RemoveElement(Element *pChild)
  	{
  		// clear ptr
  		if (pMouseOverElement == pChild)
  		{
  			pMouseOverElement->MouseLeave(*this); // do leave callback so any tooltip is cleared!
  			pMouseOverElement = nullptr;
  		}
  		if (pPrevMouseOverElement == pChild) pPrevMouseOverElement = nullptr;
  		if (pDragElement == pChild) pDragElement = nullptr;
  	}
  
  	void CMouse::OnElementGetsInvisible(Element *pChild)
  	{
  		// clear ptr
  		RemoveElement(pChild);
  	}
  
  
  // --------------------------------------------------
  // Screen
  
  	void Screen::RemoveElement(Element *pChild)
  	{
  		// inherited
  		Window::RemoveElement(pChild);
  		// clear ptrs
  		if (pActiveDlg == pChild) { pActiveDlg = nullptr; Mouse.ResetElements(); }
  		Mouse.RemoveElement(pChild);
  		if (pContext)
  		{
  			if (pContext == pChild) pContext=nullptr;
  			else pContext->RemoveElement(pChild);
  		}
  	}
  
  	Screen::Screen() : Window(), Mouse(0, 0)
  	{
  		// no dialog active
  		pActiveDlg = nullptr;
  		// set static var
  		pScreen = this;
  	}
  
  	void Screen::Init(int32_t tx, int32_t ty, int32_t twdt, int32_t thgt)
  	{
  		Mouse.x = tx+twdt/2;
  		Mouse.y = ty+thgt/2;
  		fZoom = 1.0f;
  		// set size - calcs client area as well
  		SetBounds(C4Rect(tx,ty,twdt,thgt));
  		SetPreferredDlgRect(C4Rect(0,0,twdt,thgt));
  	}
  
  	void Screen::Clear()
  	{
  		Container::Clear();
  		// dtor: Close context menu
  		AbortContext(false);
  		// fields reset
  		fExclusive = true;
  		fZoom = 1.0f;
  	}
  
  	Screen::~Screen()
  	{
  		// clear singleton
  		if (this == pScreen) pScreen = nullptr;
  	}
  
  	void Screen::ElementPosChanged(Element *pOfElement)
  	{
  		// redraw fullscreen BG if dlgs are dragged around in shared mode
  		if (!IsExclusive())
  			::GraphicsSystem.InvalidateBg();
  	}
  
  	void Screen::ShowDialog(Dialog *pDlg, bool fFade)
  	{
  		assert(pDlg);
  		// do place console mode dialogs
  		if (!Application.isEditor || pDlg->IsViewportDialog())
  			// exclusive or free dlg: center pos
  			// evaluate own placement proc first
  			if (!pDlg->DoPlacement(this, PreferredDlgRect))
  			{
  				if (pDlg->IsFreePlaceDialog())
  					pDlg->SetPos((GetWidth() - pDlg->GetWidth()) / 2, (GetHeight() - pDlg->GetHeight()) / 2 + pDlg->IsBottomPlacementDialog()*GetHeight()/3);
  				else if (IsExclusive())
  					pDlg->SetPos((GetWidth() - pDlg->GetWidth()) / 2, (GetHeight() - pDlg->GetHeight()) / 2);
  				else
  					// non-exclusive mode at preferred viewport pos
  					pDlg->SetPos(PreferredDlgRect.x+30, PreferredDlgRect.y+30);
  			}
  		// add to local component list at correct ordering
  		int32_t iNewZ = pDlg->GetZOrdering(); Element *pEl; Dialog *pOtherDlg;
  		for (pEl = GetFirst(); pEl; pEl = pEl->GetNext())
  			if ((pOtherDlg = pEl->GetDlg()))
  				if (pOtherDlg->GetZOrdering() > iNewZ)
  					break;
  		InsertElement(pDlg, pEl);
  		// set as active, if not fading and on top
  		if (!fFade && !pEl)
  			// but not viewport dialogs!
  			if (!pDlg->IsExternalDrawDialog())
  				pActiveDlg = pDlg;
  		// show it
  		pDlg->fOK = false;
  		pDlg->fShow = true;
  		// mouse focus might have changed
  		UpdateMouseFocus();
  	}
  
  	void Screen::ActivateDialog(Dialog *pDlg)
  	{
  		// no change?
  		if (pActiveDlg == pDlg) return;
  		// in single-mode: release any MouseOver/Drag of previous dlg
  		if (IsExclusive())
  			Mouse.ReleaseElements();
  		// close any context menu
  		AbortContext(false);
  		// set as active dlg
  		pActiveDlg = pDlg;
  		// ensure it's last in the list, if it's not a specially ordered dlg
  		if (!pDlg->GetZOrdering() && pDlg->GetNext())
  			MakeLastElement(pDlg);
  	}
  
  	void Screen::CloseDialog(Dialog *pDlg, bool fFade)
  	{
  		// hide dlg
  		if (!fFade) pDlg->fShow = false;
  		// kill from active
  		if (pActiveDlg == pDlg)
  		{
  			// release any MouseOver/Drag of previous dlg
  			Mouse.ReleaseElements();
  			// close context menu: probably belonging to closed dlg anyway
  			AbortContext(false);
  			// set new active dlg
  			pActiveDlg = GetTopDialog();
  			// do not set yet if it's fading
  			if (pActiveDlg && pActiveDlg->IsFading()) pActiveDlg = nullptr;
  		}
  		// redraw background; clip update
  		::GraphicsSystem.InvalidateBg(); UpdateMouseFocus();
  	}
  
  	void Screen::RecheckActiveDialog()
  	{
  		Dialog *pNewTop = GetTopDialog();
  		if (pActiveDlg == pNewTop) return;
  		Mouse.ReleaseElements();
  		// do not set yet if it's fading
  		if (pActiveDlg && pActiveDlg->IsFading()) pActiveDlg = nullptr;
  	}
  
  	Dialog *Screen::GetTopDialog()
  	{
  		// search backwards in component list
  		Dialog *pDlg;
  		for (Element *pEl = pLast; pEl; pEl = pEl->GetPrev())
  			if ((pDlg = pEl->GetDlg()))
  				if (pDlg->IsShown())
  					return pDlg;
  		// no dlg found
  		return nullptr;
  	}
  
  	void Screen::CloseAllDialogs(bool fWithOK)
  	{
  		while (pActiveDlg) pActiveDlg->Close(fWithOK);
  	}
  #ifdef USE_WIN32_WINDOWS
  	Dialog *Screen::GetDialog(HWND hWindow)
  	{
  		// get dialog with matching handle
  		Dialog *pDlg;
  		for (Element *pEl = pLast; pEl; pEl = pEl->GetPrev())
  			if ((pDlg = pEl->GetDlg()))
  				if (pDlg->pWindow && pDlg->pWindow->hWindow == hWindow)
  					return pDlg;
  		return nullptr;
  	}
  #endif
  	Dialog *Screen::GetDialog(C4Window * pWindow)
  	{
  		// get dialog with matching window
  		Dialog *pDlg;
  		for (Element *pEl = pLast; pEl; pEl = pEl->GetPrev())
  			if ( (pDlg = pEl->GetDlg()) != nullptr)
  				if (pDlg->pWindow == pWindow)
  					return pDlg;
  		return nullptr;
  	}
  	void Screen::Render(bool fDoBG)
  	{
  		// get output cgo
  		C4TargetFacet cgo;
  		cgo.Set(FullScreen.pSurface, rcBounds);
  		// draw to it
  		Draw(cgo, fDoBG);
  	}
  
  	void Screen::RenderMouse(C4TargetFacet &cgo)
  	{
  		// draw mouse cursor
  		// All tool tips hidden during keyboard input. Immediate tooltips hidden if mouse was moving recently.
  		Mouse.Draw(cgo, Mouse.IsActiveInput() ? Mouse.IsMouseStill() ? CMouse::TTST_All : CMouse::TTST_Immediate : CMouse::TTST_None);
  	}
  
  	void Screen::Draw(C4TargetFacet &cgo, bool fDoBG)
  	{
  		// draw bg, if this won't be done by a fullscreen dialog
  		if (fDoBG)
  		{
  			Dialog *pFSDlg = GetFullscreenDialog(false);
  			if (!pFSDlg || !pFSDlg->HasBackground())
  			{
  				if (::GraphicsSystem.pLoaderScreen)
  					::GraphicsSystem.pLoaderScreen->Draw(cgo, C4LoaderScreen::Flag::BACKGROUND);
  				else
  					// loader not yet loaded: black BG
  					pDraw->DrawBoxDw(cgo.Surface, 0,0, cgo.Wdt+1, cgo.Hgt+1, 0x00000000);
  			}
  		}
  		// draw contents (if GUI-gfx are loaded, which is assumed in GUI-drawing-functions)
  		if (IsVisible() && ::GraphicsResource.IsInitialized())
  		{
  			Window::Draw(cgo);
  			if (pContext) pContext->Draw(cgo);
  		}
  		// draw mouse cursor
  		if (!Application.isEditor) RenderMouse(cgo);
  	}
  
  	bool Screen::KeyAny()
  	{
  		// mark keystroke in mouse
  		Mouse.ResetActiveInput();
  		// key not yet processed
  		return false;
  	}
  
  	bool Screen::CharIn(const char * c)
  	{
  		// Special: Tab chars are ignored, because they are always handled as focus advance
  		if (c[0] == 0x09) return false;
  		// mark in mouse
  		Mouse.ResetActiveInput();
  		// no processing if focus is not set
  		if (!HasKeyboardFocus()) return false;
  		// always return true in exclusive mode (which means: key processed)
  		bool fResult = IsExclusive();
  		// context menu: forward to context
  		if (pContext) return pContext->CharIn(c) || fResult;
  		// no active dlg?
  		if (!pActiveDlg || !pActiveDlg->IsVisible()) return fResult;
  		// forward to dialog
  		return pActiveDlg->CharIn(c) || fResult;
  	}
  
  	void Screen::MouseMove(int32_t iButton, int32_t iX, int32_t iY, DWORD dwKeyParam, class C4Viewport *pVP)
  	{
  		// Special: Pass to MouseControl if dragging and button is not upped
  		if (IsActive() && !::MouseControl.IsDragging())
  		{
  			bool fResult = MouseInput(iButton, iX, iY, dwKeyParam, nullptr, pVP);
  			if (HasMouseFocus()) { SetMouseInGUI(true, true); return; }
  			// non-exclusive GUI: inform mouse-control about GUI-result
  			SetMouseInGUI(fResult, true);
  			// abort if GUI processed it
  			if (fResult) return;
  		}
  		else
  			// no GUI: mouse is not in GUI
  			SetMouseInGUI(false, true);
  		// mouse control enabled?
  		if (!::MouseControl.IsActive())
  		{
  			// enable mouse in GUI, if a mouse-only-dlg is displayed
  			if (GetMouseControlledDialogCount())
  				SetMouseInGUI(true, true);
  			return;
  		}
  		// Pass on to mouse controlled viewport
  		::Viewports.MouseMoveToViewport(iButton, iX, iY, dwKeyParam);
  	}
  
  	void Screen::SetMouseInGUI(bool fInGUI, bool fByMouse)
  	{
  		// inform mouse control and GUI
  		Mouse.SetOwnedMouse(fInGUI);
  		// initial movement to ensure mouse control pos is correct
  		if (!::MouseControl.IsMouseOwned() && !fInGUI && !fByMouse)
  		{
  			::MouseControl.SetOwnedMouse(true);
  			::Viewports.MouseMoveToViewport(C4MC_Button_None, int32_t(::pGUI->Mouse.x*C4GUI::GetZoom()), int32_t(::pGUI->Mouse.y*C4GUI::GetZoom()), ::pGUI->Mouse.dwKeys);
  		}
  		::MouseControl.SetOwnedMouse(!fInGUI);
  	}
  
  	bool Screen::MouseInput(int32_t iButton, int32_t iPxX, int32_t iPxY, DWORD dwKeyParam, Dialog *pForDlg, class C4Viewport *pForVP)
  	{
  		// convert from screen pixel coordinates to GUI coordinates
  		float fZoom = pForDlg ? 1.0f : GetZoom(); // Developer mode dialogs are currently drawn unzoomed
  		float fX = float(iPxX) / fZoom;
  		float fY = float(iPxY) / fZoom;
  		// forward to mouse
  		Mouse.Input(iButton, fX, fY, dwKeyParam);
  
  		// dragging
  		if (Mouse.pDragElement)
  		{
  			int32_t iX2=fX, iY2=fY;
  			Mouse.pDragElement->ScreenPos2ClientPos(iX2, iY2);
  			if (!Mouse.IsLDown())
  			{
  				// stop dragging
  				Mouse.pDragElement->StopDragging(Mouse, iX2, iY2, dwKeyParam);
  				Mouse.pDragElement = nullptr;
  			}
  			else
  			{
  				// continue dragging
  				Mouse.pDragElement->DoDragging(Mouse, iX2, iY2, dwKeyParam);
  			}
  		}
  		// backup previous MouseOver-element
  		Mouse.pPrevMouseOverElement = Mouse.pMouseOverElement;
  		Mouse.pMouseOverElement = nullptr;
  		bool fProcessed = false;
  		// active context menu?
  		if (!pForVP && pContext && pContext->CtxMouseInput(Mouse, iButton, fX, fY, dwKeyParam))
  		{
  			// processed by context menu: OK!
  		}
  		// otherwise: active dlg and inside screen? (or direct forward to specific dlg/viewport dlg)
  		else if (rcBounds.Contains(fX, fY) || pForDlg || pForVP)
  		{
  			// context menu open but mouse down command issued? close context then
  			if (pContext && (iButton == C4MC_Button_LeftDown || iButton == C4MC_Button_RightDown))
  				AbortContext(true);
  			// get client pos
  			if (!pForDlg && !pForVP)
  			{
  				C4Rect &rcClientArea = GetClientRect();
  				fX -= rcClientArea.x; fY -= rcClientArea.y;
  			}
  			// exclusive mode: process active dialog only
  			if (IsExclusive() && !pForDlg && !pForVP)
  			{
  				if (pActiveDlg && pActiveDlg->IsVisible() && !pActiveDlg->IsFading())
  				{
  					// bounds check to dlg: only if not dragging
  					C4Rect &rcDlgBounds = pActiveDlg->GetBounds();
  					if (Mouse.IsLDown() || rcDlgBounds.Contains(fX, fY))
  						// forward to active dialog
  						pActiveDlg->MouseInput(Mouse, iButton, fX - rcDlgBounds.x, fY - rcDlgBounds.y, dwKeyParam);
  					else
  						Mouse.pMouseOverElement = nullptr;
  				}
  				else
  					// outside dialog: own handling (for screen context menu)
  					Window::MouseInput(Mouse, iButton, fX, fY, dwKeyParam);
  			}
  			else
  			{
  				// non-exclusive mode: process all dialogs; make them active on left-click
  				Dialog *pDlg;
  				for (Element *pEl = pLast; pEl; pEl = pEl->GetPrev())
  					if ((pDlg = pEl->GetDlg()))
  						if (pDlg->IsShown())
  						{
  							// if specified: process specified dlg only
  							if (pForDlg && pDlg != pForDlg) continue;
  							// if specified: process specified viewport only
  							bool fIsExternalDrawDialog = pDlg->IsExternalDrawDialog();
  							C4Viewport *pVP = fIsExternalDrawDialog ? pDlg->GetViewport() : nullptr;
  							if (pForVP && pForVP != pVP) continue;
  							// calc offset
  							C4Rect &rcDlgBounds = pDlg->GetBounds();
  							int32_t iOffX=0, iOffY=0;
  							// special handling for viewport dialogs
  							if (fIsExternalDrawDialog)
  							{
  								// ignore external drawing dialogs without a viepwort assigned
  								if (!pVP) continue;
  								// always clip to viewport bounds
  								C4Rect rcOut(pVP->GetOutputRect());
  								if (!rcOut.Contains(fX + rcBounds.x, fY + rcBounds.y)) continue;
  								// viewport dialogs: Offset determined by viewport position
  								iOffX = rcOut.x; iOffY = rcOut.y;
  							}
  							// hit test; or special: dragging possible outside active dialog
  							if (rcDlgBounds.Contains(fX-iOffX, fY-iOffY) || (pDlg == pActiveDlg && Mouse.pDragElement && Mouse.pDragElement->GetDlg() == pDlg))
  							{
  								// Okay; do input
  								pDlg->MouseInput(Mouse, iButton, fX - rcDlgBounds.x - iOffX, fY - rcDlgBounds.y - iOffY, dwKeyParam);
  								// CAUTION: pDlg may be invalid now!
  								// set processed-flag manually
  								fProcessed = true;
  								// inactive dialogs get activated by clicks
  								if (Mouse.IsLDown() && pDlg != pActiveDlg)
  									// but not viewport dialogs!
  									if (!pDlg->IsExternalDrawDialog())
  										ActivateDialog(pDlg);
  								// one dlg only; break loop here
  								break;
  							}
  						}
  			}
  		}
  
  		// check if MouseOver has changed
  		if (Mouse.pPrevMouseOverElement != Mouse.pMouseOverElement)
  		{
  			// send events
  			if (Mouse.pPrevMouseOverElement) Mouse.pPrevMouseOverElement->MouseLeave(Mouse);
  			if (Mouse.pMouseOverElement) Mouse.pMouseOverElement->MouseEnter(Mouse);
  		}
  		// return whether anything processed it
  		return fProcessed || Mouse.pDragElement || (Mouse.pMouseOverElement && Mouse.pMouseOverElement!=this) || pContext;
  	}
  
  	bool Screen::RecheckMouseInput()
  	{
  		return MouseInput(C4MC_Button_None, Mouse.x, Mouse.y, Mouse.dwKeys, nullptr, nullptr);
  	}
  
  	void Screen::UpdateMouseFocus()
  	{
  		// when exclusive mode has changed: Make sure mouse clip is correct
  		::MouseControl.UpdateClip();
  	}
  
  	void Screen::DoContext(ContextMenu *pNewCtx, Element *pAtElement, int32_t iX, int32_t iY)
  	{
  		assert(pNewCtx); assert(pNewCtx != pContext);
  		// close previous context menu
  		AbortContext(false);
  		// element offset
  		if (pAtElement) pAtElement->ClientPos2ScreenPos(iX, iY);
  		// usually open bottom right
  		// check bottom bounds
  		if (iY + pNewCtx->GetBounds().Hgt >= GetBounds().Hgt)
  		{
  			// bottom too narrow: open to top, if height is sufficient
  			// otherwise, open to top from bottom screen pos
  			if (iY < pNewCtx->GetBounds().Hgt) iY = GetBounds().Hgt;
  			iY -= pNewCtx->GetBounds().Hgt;
  		}
  		// check right bounds likewise
  		if (iX + pNewCtx->GetBounds().Wdt >= GetBounds().Wdt)
  		{
  			// bottom too narrow: open to top, if height is sufficient
  			// otherwise, open to top from bottom screen pos
  			if (iX < pNewCtx->GetBounds().Wdt) iX = GetBounds().Wdt;
  			iX -= pNewCtx->GetBounds().Wdt;
  		}
  		// open new
  		(pContext = pNewCtx)->Open(pAtElement, iX, iY);
  	}
  
  	int32_t Screen::GetMouseControlledDialogCount()
  	{
  		Dialog *pDlg; int32_t iResult=0;
  		for (Element *pEl = GetFirst(); pEl; pEl = pEl->GetNext())
  			if ((pDlg = pEl->GetDlg()))
  				if (pDlg->IsShown() && pDlg->IsMouseControlled())
  					++iResult;
  		return iResult;
  	}
  
  	void Screen::DrawToolTip(const char *szTip, C4TargetFacet &cgo, float x, float y)
  	{
  		CStdFont *pUseFont = &(::GraphicsResource.TooltipFont);
  		StdStrBuf sText;
  		pUseFont->BreakMessage(szTip, std::min<int32_t>(C4GUI_MaxToolTipWdt, std::max<int32_t>(cgo.Wdt, 50)), &sText, true);
  		// get tooltip rect
  		int32_t tWdt,tHgt;
  		if (pUseFont->GetTextExtent(sText.getData(), tWdt, tHgt, true))
  		{
  			tWdt+=6; tHgt+=4;
  			int32_t tX, tY;
  			if (y < cgo.Y+cgo.TargetY+tHgt+5) tY = std::min<int32_t>(y+5, cgo.TargetY+cgo.Hgt-tHgt); else tY = y-tHgt-5;
  			tX = Clamp<int32_t>(x-tWdt/2, cgo.TargetX+cgo.X, cgo.TargetX+cgo.Wdt-tWdt);
  			// draw tooltip box
  			pDraw->DrawBoxDw(cgo.Surface, tX,tY,tX+tWdt-1,tY+tHgt-2, C4GUI_ToolTipBGColor);
  			pDraw->DrawFrameDw(cgo.Surface, tX,tY,tX+tWdt-1,tY+tHgt-1, C4GUI_ToolTipFrameColor);
  			// draw tooltip
  			pDraw->TextOut(sText.getData(), *pUseFont, 1.0f, cgo.Surface, tX+3,tY+1, C4GUI_ToolTipColor, ALeft);
  			// while there's a tooltip, redraw the bg, because it might overlap
  			::GraphicsSystem.InvalidateBg();
  		}
  	}
  
  	bool Screen::HasFullscreenDialog(bool fIncludeFading)
  	{
  		return !!GetFullscreenDialog(fIncludeFading);
  	}
  
  	Dialog *Screen::GetFullscreenDialog(bool fIncludeFading)
  	{
  		Dialog *pDlg;
  		for (Element *pEl = GetFirst(); pEl; pEl = pEl->GetNext())
  			if ((pDlg = pEl->GetDlg()))
  				if (pDlg->IsVisible())
  					if (pDlg->IsFullscreenDialog())
  						if (fIncludeFading || !pDlg->IsFading())
  							return pDlg;
  		return nullptr;
  	}
  
  	void Screen::UpdateGamepadGUIControlEnabled()
  	{
  		// Gamepad is always kept open now.
  	}
  
  	Screen TheScreen;
  
  // --------------------------------------------------
  // ComponentAligner
  
  	bool ComponentAligner::GetFromTop(int32_t iHgt, int32_t iWdt, C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.x + iMarginX;
  		rcOut.y = rcClientArea.y + iMarginY;
  		rcOut.Wdt = rcClientArea.Wdt - iMarginX * 2;
  		rcOut.Hgt = iHgt;
  		int32_t d = iHgt + iMarginY * 2;
  		rcClientArea.y += d; rcClientArea.Hgt -= d;
  		// get centered in width as specified
  		if (iWdt >= 0)
  		{
  			rcOut.x += (rcOut.Wdt - iWdt) / 2;
  			rcOut.Wdt = iWdt;
  		}
  		return rcClientArea.Hgt >= 0;
  	}
  
  	bool ComponentAligner::GetFromLeft(int32_t iWdt, int32_t iHgt, C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.x + iMarginX;
  		rcOut.y = rcClientArea.y + iMarginY;
  		rcOut.Wdt = iWdt;
  		rcOut.Hgt = rcClientArea.Hgt - iMarginY * 2;
  		int32_t d = iWdt + iMarginX * 2;
  		rcClientArea.x += d; rcClientArea.Wdt -= d;
  		// get centered in height as specified
  		if (iHgt >= 0)
  		{
  			rcOut.y += (rcOut.Hgt - iHgt) / 2;
  			rcOut.Hgt = iHgt;
  		}
  		return rcClientArea.Wdt >= 0;
  	}
  
  	bool ComponentAligner::GetFromRight(int32_t iWdt, int32_t iHgt, C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.x + rcClientArea.Wdt - iWdt - iMarginX;
  		rcOut.y = rcClientArea.y + iMarginY;
  		rcOut.Wdt = iWdt;
  		rcOut.Hgt = rcClientArea.Hgt - iMarginY * 2;
  		rcClientArea.Wdt -= iWdt + iMarginX * 2;
  		// get centered in height as specified
  		if (iHgt >= 0)
  		{
  			rcOut.y += (rcOut.Hgt - iHgt) / 2;
  			rcOut.Hgt = iHgt;
  		}
  		return rcClientArea.Wdt >= 0;
  	}
  
  	bool ComponentAligner::GetFromBottom(int32_t iHgt, int32_t iWdt, C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.x + iMarginX;
  		rcOut.y = rcClientArea.y + rcClientArea.Hgt - iHgt - iMarginY;
  		rcOut.Wdt = rcClientArea.Wdt - iMarginX * 2;
  		rcOut.Hgt = iHgt;
  		rcClientArea.Hgt -= iHgt + iMarginY * 2;
  		// get centered in width as specified
  		if (iWdt >= 0)
  		{
  			rcOut.x += (rcOut.Wdt - iWdt) / 2;
  			rcOut.Wdt = iWdt;
  		}
  		return rcClientArea.Hgt >= 0;
  	}
  
  	void ComponentAligner::GetAll(C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.x + iMarginX;
  		rcOut.y = rcClientArea.y + iMarginY;
  		rcOut.Wdt = rcClientArea.Wdt - iMarginX * 2;
  		rcOut.Hgt = rcClientArea.Hgt - iMarginY * 2;
  	}
  
  	bool ComponentAligner::GetCentered(int32_t iWdt, int32_t iHgt, C4Rect &rcOut)
  	{
  		rcOut.x = rcClientArea.GetMiddleX() - iWdt/2;
  		rcOut.y = rcClientArea.GetMiddleY() - iHgt/2;
  		rcOut.Wdt = iWdt;
  		rcOut.Hgt = iHgt;
  		// range check
  		return rcOut.Wdt+iMarginX*2 <= rcClientArea.Wdt && rcOut.Hgt+iMarginY*2 <= rcClientArea.Hgt;
  	}
  
  	void ComponentAligner::LogIt(const char *szName)
  	{
  		LogF("ComponentAligner %s: (%d,%d)+(%d,%d), Margin (%d,%d)", szName, rcClientArea.x, rcClientArea.y, rcClientArea.Wdt, rcClientArea.Hgt, iMarginX, iMarginY);
  	}
  
  	C4Rect &ComponentAligner::GetGridCell(int32_t iSectX, int32_t iSectXMax, int32_t iSectY, int32_t iSectYMax, int32_t iSectSizeX, int32_t iSectSizeY, bool fCenterPos, int32_t iSectNumX, int32_t iSectNumY)
  	{
  		int32_t iSectSizeXO = iSectSizeX, iSectSizeYO = iSectSizeY;
  		int32_t iSectSizeXMax = (rcClientArea.Wdt-iMarginX) / iSectXMax - iMarginX;
  		int32_t iSectSizeYMax = (rcClientArea.Hgt-iMarginY) / iSectYMax - iMarginY;
  		if (iSectSizeX<0 || fCenterPos) iSectSizeX=iSectSizeXMax; else iSectSizeX=std::min<int32_t>(iSectSizeX, iSectSizeXMax);
  		if (iSectSizeY<0 || fCenterPos) iSectSizeY=iSectSizeYMax; else iSectSizeY=std::min<int32_t>(iSectSizeY, iSectSizeYMax);
  		rcTemp.x = iSectX * (iSectSizeX+iMarginX) + iMarginX + rcClientArea.x;
  		rcTemp.y = iSectY * (iSectSizeY+iMarginY) + iMarginY + rcClientArea.y;
  		rcTemp.Wdt = iSectSizeX * iSectNumX + iMarginX*(iSectNumX-1); rcTemp.Hgt = iSectSizeY * iSectNumY + iMarginY*(iSectNumY-1);
  		if (iSectSizeXO>=0 && fCenterPos)
  		{
  			rcTemp.x += (iSectSizeX - iSectSizeXO)/2;
  			rcTemp.Wdt = iSectSizeXO;
  		}
  		if (iSectSizeYO>=0 && fCenterPos)
  		{
  			rcTemp.y += (iSectSizeY - iSectSizeYO)/2;
  			rcTemp.Hgt = iSectSizeYO;
  		}
  		return rcTemp;
  	}
  
  
  // --------------------------------------------------
  // Global stuff
  
  	void GUISound(const char *szSound)
  	{
  		if (Config.Sound.FESamples)
  			StartSoundEffect(szSound);
  	}
  
  
  // --------------------------------------------------
  // Static vars
  
  	C4Rect ComponentAligner::rcTemp;
  	Screen *Screen::pScreen;
  
  
  } // end of namespace
  
  C4GUIScreen *pGUI = &C4GUI::TheScreen;
  