/*

Miranda IM: the free IM client for Microsoft* Windows*

Copyright 2000-2003 Miranda ICQ/IM project, 
all portions of this codebase are copyrighted to the people 
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#include "commonheaders.h"
#include "m_clc.h"
#include "clc.h"

//loads of stuff that didn't really fit anywhere else

int HitTest(HWND hwnd,struct ClcData *dat,int testx,int testy,struct ClcContact **contact,struct ClcGroup **group,DWORD *flags)
{
	struct ClcContact *hitcontact;
	struct ClcGroup *hitgroup;
	int hit,indent,width,i,cxSmIcon;
	int checkboxWidth, subident,ic=0;
	SIZE textSize;
	HDC hdc;
	HFONT oldfont;
	RECT clRect;
	DWORD style=GetWindowLong(hwnd,GWL_STYLE);

	if(flags) *flags=0;
	GetClientRect(hwnd,&clRect);
	if(testx<0 || testy<0 || testy>=clRect.bottom || testx>=clRect.right) {
		if(flags) {
			if(testx<0) *flags|=CLCHT_TOLEFT;
			else if(testx>=clRect.right) *flags|=CLCHT_TORIGHT;
			if(testy<0) *flags|=CLCHT_ABOVE;
			else if(testy>=clRect.bottom) *flags|=CLCHT_BELOW;
		}
		return -1;
	}
	if(testx<dat->leftMargin) {
		if(flags) *flags|=CLCHT_INLEFTMARGIN|CLCHT_NOWHERE;
		return -1;
	}
	hit=GetRowByIndex(dat ,(testy+dat->yScroll)/dat->rowHeight,&hitcontact,&hitgroup);
	if(hit==-1) {
		if(flags) *flags|=CLCHT_NOWHERE|CLCHT_BELOWITEMS;
		return -1;
	}
	if(contact) *contact=hitcontact;
	if(group) *group=hitgroup;
	/////////
	if (hitcontact->type==CLCIT_CONTACT && hitcontact->isSubcontact)
		subident=dat->rowHeight/2;
	else
		subident=0;

	for(indent=0;hitgroup->parent;indent++,hitgroup=hitgroup->parent);
	if(testx<dat->leftMargin+indent*dat->groupIndent+subident) {
		if(flags) *flags|=CLCHT_ONITEMINDENT;
		return hit;
	}
	checkboxWidth=0;
	if(style&CLS_CHECKBOXES && hitcontact->type==CLCIT_CONTACT) checkboxWidth=dat->checkboxSize+2;
	if(style&CLS_GROUPCHECKBOXES && hitcontact->type==CLCIT_GROUP) checkboxWidth=dat->checkboxSize+2;
	if(hitcontact->type==CLCIT_INFO && hitcontact->flags&CLCIIF_CHECKBOX) checkboxWidth=dat->checkboxSize+2;
	if(testx<dat->leftMargin+indent*dat->groupIndent+checkboxWidth+subident) {
		if(flags) *flags|=CLCHT_ONITEMCHECK;
		return hit;
	}
	if(testx<dat->leftMargin+indent*dat->groupIndent+checkboxWidth+dat->iconXSpace+subident) {
		if(flags) *flags|=CLCHT_ONITEMICON;
		return hit;
	}
	
	hdc=GetDC(hwnd);
	GetTextExtentPoint32(hdc,hitcontact->szText,lstrlen(hitcontact->szText),&textSize);
	width=textSize.cx;

	cxSmIcon=GetSystemMetrics(SM_CXSMICON);

	for(i=0;i<dat->extraColumnsCount;i++) {
		int x;
		if(hitcontact->iExtraImage[i]==0xFF) continue;

			if ((style&CLS_EX_MULTICOLUMNALIGNLEFT))
			{							
				x=(dat->leftMargin+indent*dat->groupIndent+checkboxWidth+dat->iconXSpace-2+width);
				x+=16;
				x=x+dat->extraColumnSpacing*(ic);
				if (i==dat->extraColumnsCount-1) {x=clRect.right-18;}
			}else
			{
				int ir;
				if (dat->MetaIgnoreEmptyExtra)
				{
					int j;
					ir = 0;
					for(j=i;j<dat->extraColumnsCount;j++) 
						if(hitcontact->iExtraImage[j]!=0xFF)
							ir++;
				}else
					ir = dat->extraColumnsCount-i;

				x=clRect.right-dat->extraColumnSpacing*ir;
			}
		ic++;

		if(testx>=x &&
		   testx<x+cxSmIcon) {
			if(flags) *flags|=CLCHT_ONITEMEXTRA|(i<<24);
			
			ReleaseDC(hwnd,hdc);
			return hit;
	}	}

	if(hitcontact->type==CLCIT_GROUP) 
		oldfont=SelectObject(hdc,dat->fontInfo[FONTID_GROUPS].hFont);
	else oldfont=SelectObject(hdc,dat->fontInfo[FONTID_CONTACTS].hFont);
	if (DBGetContactSettingByte(NULL,"CLC","HiLightMode",0)==1)
	{
		if(flags) *flags|=CLCHT_ONITEMLABEL;
		SelectObject(hdc,oldfont);
		ReleaseDC(hwnd,hdc);
		return hit;
	}
	
	GetTextExtentPoint32(hdc,hitcontact->szText,lstrlen(hitcontact->szText),&textSize);
	width=textSize.cx;
	if(hitcontact->type==CLCIT_GROUP) {
		char *szCounts;
		szCounts = pcli->pfnGetGroupCountsText(dat,hitcontact);
		if(szCounts[0]) {
			GetTextExtentPoint32A(hdc," ",1,&textSize);
			width+=textSize.cx;
			SelectObject(hdc,dat->fontInfo[FONTID_GROUPCOUNTS].hFont);
			GetTextExtentPoint32A(hdc,szCounts,lstrlenA(szCounts),&textSize);
			width+=textSize.cx;
		}
	}
	SelectObject(hdc,oldfont);
	ReleaseDC(hwnd,hdc);
	if(testx<dat->leftMargin+indent*dat->groupIndent+checkboxWidth+dat->iconXSpace+width+4+subident) {
		if(flags) *flags|=CLCHT_ONITEMLABEL;
		return hit;
	}
	if(flags) *flags|=CLCHT_NOWHERE;
	return -1;
}

void ScrollTo(HWND hwnd,struct ClcData *dat,int desty,int noSmooth)
{
	DWORD startTick,nowTick;
	int oldy=dat->yScroll;
	RECT clRect,rcInvalidate;
	int maxy,previousy;

	if(dat->iHotTrack!=-1 && dat->yScroll != desty) {
		pcli->pfnInvalidateItem(hwnd,dat,dat->iHotTrack);
		dat->iHotTrack=-1;
		ReleaseCapture();
	}
	GetClientRect(hwnd,&clRect);
	rcInvalidate=clRect;
	maxy=dat->rowHeight*GetGroupContentsCount(&dat->list,2)-clRect.bottom;
	if(desty>maxy) desty=maxy;
	if(desty<0) desty=0;
	if(abs(desty-dat->yScroll)<4) noSmooth=1;
	if (!noSmooth && dat->exStyle&CLS_EX_NOSMOOTHSCROLLING) noSmooth=1;
	previousy=dat->yScroll;
	if (!noSmooth) {
		startTick=GetTickCount();
		for (;;) {
			nowTick=GetTickCount();
			if(nowTick>=startTick+dat->scrollTime) break;
			dat->yScroll=oldy+(desty-oldy)*(int)(nowTick-startTick)/dat->scrollTime;
			if(dat->backgroundBmpUse&CLBF_SCROLL || dat->hBmpBackground==NULL)
				ScrollWindowEx(hwnd,0,previousy-dat->yScroll,NULL,NULL,NULL,NULL,SW_INVALIDATE);
			else
				InvalidateRect(hwnd,NULL,FALSE);
			previousy=dat->yScroll;
		  	SetScrollPos(hwnd,SB_VERT,dat->yScroll,TRUE);
			UpdateWindow(hwnd);
		}
	}
	dat->yScroll=desty;
	if(dat->backgroundBmpUse&CLBF_SCROLL || dat->hBmpBackground==NULL)
		ScrollWindowEx(hwnd,0,previousy-dat->yScroll,NULL,NULL,NULL,NULL,SW_INVALIDATE);
	else
		InvalidateRect(hwnd,NULL,FALSE);
	SetScrollPos(hwnd,SB_VERT,dat->yScroll,TRUE);
}

void RecalcScrollBar(HWND hwnd,struct ClcData *dat)
{
	SCROLLINFO si={0};
	RECT clRect;
	NMCLISTCONTROL nm;
	boolean sbar=FALSE;
	
	GetClientRect(hwnd,&clRect);

	si.cbSize=sizeof(si);
	si.fMask=SIF_ALL;
	si.nMin=0;
	si.nMax=dat->rowHeight*GetGroupContentsCount(&dat->list,2)-1;
	si.nPage=clRect.bottom;
	si.nPos=dat->yScroll;
	
	nm.hdr.code=CLN_LISTSIZECHANGE;
	nm.hdr.hwndFrom=hwnd;
	nm.hdr.idFrom=GetDlgCtrlID(hwnd);
	nm.pt.y=si.nMax;
	SendMessage(GetParent(hwnd),WM_NOTIFY,0,(LPARAM)&nm);

	GetClientRect(hwnd,&clRect);
	si.cbSize=sizeof(si);
	si.fMask=SIF_ALL;
	si.nMin=0;
	si.nMax=dat->rowHeight*GetGroupContentsCount(&dat->list,2)-1;
	si.nPage=clRect.bottom;
	si.nPos=dat->yScroll;

	sbar=(dat->noVScrollbar==1||(int)si.nPage>si.nMax);
	
	ShowScrollBar(hwnd,SB_VERT,sbar? FALSE : TRUE);
	if (!sbar) {	
		if ( GetWindowLong(hwnd,GWL_STYLE)&CLS_CONTACTLIST ) {
			if ( dat->noVScrollbar==0 ) SetScrollInfo(hwnd,SB_VERT,&si,TRUE);
			else SetScrollInfo(hwnd,SB_VERT,&si,FALSE);
		}
		else SetScrollInfo(hwnd,SB_VERT,&si,TRUE);
	}
	ScrollTo(hwnd,dat,dat->yScroll,1);
}

void CalcEipPosition( struct ClcData *dat, struct ClcContact *contact, struct ClcGroup *group, POINT *result)
{
	int indent;
	for (indent = 0; group->parent; indent++, group = group->parent);
	result->x = indent * dat->groupIndent + dat->iconXSpace - 2;
	result->y = dat->selection * dat->rowHeight - dat->yScroll;

	if (contact->type == CLCIT_CONTACT && contact->isSubcontact)
		result->x += dat->rowHeight/2;
}

void GetDefaultFontSetting(int i,LOGFONT *lf,COLORREF *colour)
{
	SystemParametersInfo(SPI_GETICONTITLELOGFONT,sizeof(LOGFONT),lf,FALSE);
	*colour=GetSysColor(COLOR_WINDOWTEXT);
	switch(i) {
	case FONTID_GROUPS:
		lf->lfWeight=FW_BOLD;
		break;
	case FONTID_GROUPCOUNTS:
		lf->lfHeight=(int)(lf->lfHeight*.75);
		*colour=GetSysColor(COLOR_3DSHADOW);
		break;
	case FONTID_OFFINVIS:
	case FONTID_INVIS:
		lf->lfItalic=!lf->lfItalic;
		break;
	case FONTID_DIVIDERS:
		lf->lfHeight=(int)(lf->lfHeight*.75);
		break;
	case FONTID_NOTONLIST:
		*colour=GetSysColor(COLOR_3DSHADOW);
		break;
}	}

extern void ( *saveLoadClcOptions )(HWND hwnd,struct ClcData *dat);

void LoadClcOptions(HWND hwnd,struct ClcData *dat)
{
	int i;

	dat->style=GetWindowLong(hwnd,GWL_STYLE);
	dat->MetaIgnoreEmptyExtra=DBGetContactSettingByte(NULL,"CLC","MetaIgnoreEmptyExtra",1);
	saveLoadClcOptions( hwnd, dat );

	for (i = 0; i <= FONTID_MAX; i++)
		if (dat->fontInfo[i].fontHeight > dat->rowHeight) 
			dat->rowHeight = dat->fontInfo[i].fontHeight;
}