#include "common.h"

#define ID_CLOSETIMER		0x0101
#define ID_MOVETIMER		0x0102

DWORD pop_start_x, pop_start_y;
int global_mouse_in = 0;

void trimW(wchar_t *str) {
	int len = (int)mir_wstrlen(str), pos;
	// trim whitespace (e.g. from OTR detection)
	for (pos = len - 1; pos >= 0; pos--) {
		if (str[pos] == L' ' || str[pos] == L'\t' || str[pos] == L'\r' || str[pos] == L'\n') str[pos] = 0;
		else break;
	}

	// remove tabs
	for (pos = len - 1; pos >= 0; pos--)
		if (str[pos] == L'\t') str[pos] = L' ';
}

struct HWNDStackNode {
	HWND hwnd;
	struct HWNDStackNode *next;
};

HWNDStackNode *hwnd_stack_top = 0;
int stack_size = 0;

void RepositionWindows() {
	HWNDStackNode *current;	
	int x = pop_start_x, y;
	int height;

	if (options.animate == ANIMATE_HORZ)
	{
		if (options.location == PL_BOTTOMRIGHT || options.location == PL_TOPRIGHT)
			x -= options.win_width + 1;
		if (options.location == PL_BOTTOMLEFT || options.location == PL_TOPLEFT)
			x += options.win_width + 1;
	}

	// Особый случай: выдвижение окна из-за верхнего края экрана.
	if ((options.animate == ANIMATE_VERT) && (options.location == PL_TOPLEFT || options.location == PL_TOPRIGHT))
		y = 0;
	else
		y = pop_start_y;

	current = hwnd_stack_top;
	while (current)
	{
		SendMessage(current->hwnd, PUM_GETHEIGHT, (WPARAM)&height, 0);

		// Если окна размещать у нижнего края, то координата текущего окна меньше на его высоту.
		if (options.location == PL_BOTTOMLEFT || options.location == PL_BOTTOMRIGHT)
			y -= height + 1;

		// Перемещаем окно.
		SendMessage(current->hwnd, PUM_MOVE, (WPARAM)x, (LPARAM)y);
		// Координата для следующего окна.
		// Если окна размещать у верхнего края, то координата следующего окна больше на высоту текущего окна.
		if (options.location == PL_TOPLEFT || options.location == PL_TOPRIGHT)
			y += height + 1;

		// Переходим к следующему окну.
		current = current->next;
	}
}

void AddWindowToStack(HWND hwnd) {

	HWNDStackNode *new_node = (HWNDStackNode *)mir_alloc(sizeof(HWNDStackNode));
	new_node->hwnd = hwnd;
	new_node->next = hwnd_stack_top;
	hwnd_stack_top = new_node;

	int height;
	SendMessage(hwnd, PUM_GETHEIGHT, (WPARAM)&height, 0);

	RECT wa_rect;
	SystemParametersInfo(SPI_GETWORKAREA, 0, &wa_rect, 0);
	if (options.use_mim_monitor) {
		RECT clr;
		GetWindowRect((HWND)CallService(MS_CLUI_GETHWND, 0, 0), &clr);
		HMONITOR hMonitor = MonitorFromRect(&clr, MONITOR_DEFAULTTONEAREST);
		if (hMonitor) {
			MONITORINFO mi;
			mi.cbSize = sizeof(mi);
			if (GetMonitorInfo(hMonitor, &mi))
				wa_rect = mi.rcWork;
		}
	}

	switch (options.animate) {
	case ANIMATE_NO:
		if (options.location == PL_BOTTOMRIGHT || options.location == PL_TOPRIGHT)
			pop_start_x = wa_rect.right - options.win_width - 1;
		else
			pop_start_x = wa_rect.left + 1;

		if (options.location == PL_BOTTOMRIGHT || options.location == PL_BOTTOMLEFT)
			pop_start_y = wa_rect.bottom;
		else
			pop_start_y = wa_rect.top + 1;
		break;
	case ANIMATE_HORZ:
		if (options.location == PL_BOTTOMRIGHT || options.location == PL_TOPRIGHT)
			pop_start_x = wa_rect.right;
		else
			pop_start_x = wa_rect.left - options.win_width;

		if (options.location == PL_BOTTOMRIGHT || options.location == PL_BOTTOMLEFT)
			pop_start_y = wa_rect.bottom;
		else
			pop_start_y = wa_rect.top + 1;
		break;
	case ANIMATE_VERT:
		if (options.location == PL_BOTTOMRIGHT || options.location == PL_TOPRIGHT)
			pop_start_x = wa_rect.right - options.win_width - 1;
		else
			pop_start_x = wa_rect.left + 1;

		if (options.location == PL_BOTTOMRIGHT || options.location == PL_BOTTOMLEFT)
			pop_start_y = wa_rect.bottom;
		else
			pop_start_y = wa_rect.top - height + 1;
		break;
	}

	SetWindowPos(hwnd, 0, pop_start_x, pop_start_y, 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);

	stack_size++;

	RepositionWindows();
}

void RemoveWindowFromStack(HWND hwnd)
{
	HWNDStackNode *current = hwnd_stack_top, *prev = 0;
	while(current) {
		if (current->hwnd == hwnd) {
			if (prev)
				prev->next = current->next;
			else
				hwnd_stack_top = current->next;

			mir_free(current);
			stack_size--;
			break;
		}
		
		prev = current; 
		current = current->next;
	}

	// Если после удаления в стеке остались окна, то нужно провести сжатие:
	// сдвинуть все окна к верхнему/нижнему краю экрана.
	if (hwnd_stack_top)
		RepositionWindows();
}

void BroadcastMessage(UINT msg, WPARAM wParam, LPARAM lParam)
{
	HWNDStackNode *current = hwnd_stack_top;
	while(current) {
		SendMessage(current->hwnd, msg, wParam, lParam);
		current = current->next;
	}
}

void DeinitWindowStack()
{
	HWNDStackNode *current = hwnd_stack_top;
	hwnd_stack_top = NULL;
	while(current) {
		HWNDStackNode *pNext = current->next;
		DestroyWindow(current->hwnd);
		current = pNext;
	}
}

struct PopupWindowData
{
	PopupData *pd;
	int new_x, new_y;
	bool is_round, av_is_round, mouse_in, close_on_leave;
	bool custom_col;
	HBRUSH bkBrush, barBrush, underlineBrush;
	HPEN bPen;
	TCHAR tbuff[128];
	int tb_height, av_height, text_height, time_height, time_width;
	int real_av_width, real_av_height;
	bool have_av;
	HANDLE hNotify;
};

LRESULT CALLBACK PopupWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	PopupWindowData *pwd = (PopupWindowData *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
	PopupData *pd = 0;
	if (pwd) pd = pwd->pd;

	switch(uMsg) {
	case WM_CREATE:
		{
			CREATESTRUCT *cs = (CREATESTRUCT *)lParam;
			pwd = (PopupWindowData *)mir_alloc(sizeof(PopupWindowData));
			pd = (PopupData *)cs->lpCreateParams;
			pwd->pd = pd;
			pwd->hNotify = 0;

			trimW(pwd->pd->pwzTitle);
			trimW(pwd->pd->pwzText);

			pwd->is_round = options.round;
			pwd->av_is_round = options.av_round;
			pwd->mouse_in = pwd->close_on_leave = false;
			pwd->custom_col = (pd->colorBack != pd->colorText);

			pwd->tb_height = pwd->av_height = pwd->text_height = pwd->time_height = pwd->time_width = 0;
			pwd->have_av = false;

			if (pwd->custom_col) {
				pwd->bkBrush = CreateSolidBrush(pd->colorBack);
				DWORD darkBg = pd->colorBack - ((pd->colorBack >> 2) & 0x3f3f3f); // 3/4 of current individual RGB components
				pwd->barBrush = CreateSolidBrush(darkBg); // make sidebar a dark version of the bg
				pwd->underlineBrush = CreateSolidBrush(pd->colorBack); // make sidebar a dark version of the bg
			}
			else {
				pwd->bkBrush = CreateSolidBrush(colBg);
				pwd->barBrush = CreateSolidBrush(colSidebar);
				pwd->underlineBrush = CreateSolidBrush(colTitleUnderline);
			}

			if (options.border) pwd->bPen = (HPEN)CreatePen(PS_SOLID, 1, colBorder); 
			else pwd->bPen = CreatePen(PS_SOLID, 1, pwd->custom_col ? pd->colorBack : colBg);

			SYSTEMTIME st;
			GetLocalTime(&st);
			GetTimeFormat(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &st, 0, pwd->tbuff, 128);

			SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)pwd);

			// make a really long timeout - say 7 days? ;)
			if (pd->timeout == -1 || (pd->timeout == 0 && options.default_timeout == -1))
				SetTimer(hwnd, ID_CLOSETIMER, 7 * 24 * 60 * 60 * 1000, 0);
			else if (pd->timeout == 0)
				SetTimer(hwnd, ID_CLOSETIMER, options.default_timeout * 1000, 0);
			else
				SetTimer(hwnd, ID_CLOSETIMER, pd->timeout * 1000, 0);

			AddWindowToStack(hwnd); // this updates our size
		}

		// transparency
#ifdef WS_EX_LAYERED 
		SetWindowLongPtr(hwnd, GWL_EXSTYLE, GetWindowLongPtr(hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
#endif

#ifdef CS_DROPSHADOW
		if (options.drop_shadow) {
			SetClassLong(hwnd, GCL_STYLE, CS_DROPSHADOW);
		}
#endif

#ifdef LWA_ALPHA
		SetLayeredWindowAttributes(hwnd, RGB(0,0,0), (int)(options.opacity / 100.0 * 255), LWA_ALPHA);
		if (options.trans_bg) {
			COLORREF bg;
			if (pd->colorBack == pd->colorText)
				bg = colBg;
			else
				bg = pd->colorBack;
			SetLayeredWindowAttributes(hwnd, bg, 0, LWA_COLORKEY);
		}
#endif
		PostMessage(hwnd, UM_INITPOPUP, (WPARAM)hwnd, 0);
		return 0;
	case WM_MOUSEMOVE:
		if (pwd && !pwd->mouse_in) {
			pwd->mouse_in = true;
			global_mouse_in++;
			TRACKMOUSEEVENT tme = { sizeof(tme) };
			tme.dwFlags = TME_LEAVE;
			tme.hwndTrack = hwnd;
			TrackMouseEvent(&tme);
		}
		break;
	case WM_MOUSELEAVE:
		if (pwd && pwd->mouse_in) {
			pwd->mouse_in = false;
			global_mouse_in--;
		}
		return 0;
	case WM_LBUTTONUP:
		// fake STN_CLICKED notification
		SendMessage(hwnd, WM_COMMAND, MAKEWPARAM(0, STN_CLICKED), 0);
		break;
	case WM_TIMER:
		if (wParam == ID_CLOSETIMER) {
			KillTimer(hwnd, ID_CLOSETIMER);
			if (pwd->mouse_in || (options.global_hover && global_mouse_in))
				SetTimer(hwnd, ID_CLOSETIMER, 800, 0); // reset timer if mouse in window - allow another 800 ms
			else {
				PostMessage(hwnd, UM_DESTROYPOPUP, 0, 0);
			}
			return TRUE;
		}
		
		if (wParam == ID_MOVETIMER) {
			RECT r;
			GetWindowRect(hwnd, &r);

			if (r.left == pwd->new_x && r.top == pwd->new_y) {
				KillTimer(hwnd, ID_MOVETIMER);
				return TRUE;
			} 
			int adj_x = (pwd->new_x - r.left) / 4, adj_y = (pwd->new_y - r.top) / 4;
			if (adj_x == 0) adj_x = (pwd->new_x - r.left);
			if (adj_y == 0) adj_y = (pwd->new_y - r.top);

			int x = r.left + adj_x, y = r.top + adj_y;
			SetWindowPos(hwnd, 0, x, y, 0, 0, SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);

			if (!IsWindowVisible(hwnd)) {
				ShowWindow(hwnd, SW_SHOWNOACTIVATE);
				UpdateWindow(hwnd);
			}
			return TRUE;
		}
		break;

	case WM_ERASEBKGND:
		{
			HDC hdc = (HDC) wParam; 
			RECT r, r_bar;
			GetClientRect(hwnd, &r); 

			// bg
			FillRect(hdc, &r, pwd->bkBrush);
			// sidebar
			r_bar = r;
			r_bar.right = r.left + options.sb_width;
			FillRect(hdc, &r_bar, pwd->barBrush);
			// border
			if (options.border) {

				HBRUSH hOldBrush = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH));
				HPEN hOldPen = (HPEN)SelectObject(hdc, pwd->bPen);

				int h = 0;
				if (options.round) {
					int v;
					int w=14;
					h=(r.right-r.left)>(w*2)?w:(r.right-r.left);
					v=(r.bottom-r.top)>(w*2)?w:(r.bottom-r.top);
					h=(h<v)?h:v;
				}
				RoundRect(hdc, 0, 0, (r.right - r.left), (r.bottom - r.top), h, h);

				SelectObject(hdc, hOldBrush);
				SelectObject(hdc, hOldPen);
			}
		}
		return TRUE;

	case WM_PAINT:
		{
			RECT r;
			PAINTSTRUCT ps;
			BeginPaint(hwnd, &ps);
			HDC hdc = ps.hdc;
			GetClientRect(hwnd, &r);

			SetBkMode(hdc, TRANSPARENT);

			// avatar & time if with avatar
			if (options.av_layout != PAV_NONE && (pwd->have_av || options.time_layout == PT_WITHAV)) {
				RECT avr;
				avr.top = options.av_padding;

				if (options.av_layout == PAV_LEFT) {
					avr.left = r.left + options.av_padding;
					if (pwd->have_av && options.time_layout == PT_WITHAV) avr.right = avr.left + max(pwd->real_av_width, pwd->time_width);
					else if (pwd->have_av) avr.right = avr.left + pwd->real_av_width;
					else avr.right = avr.left + pwd->time_width;
					r.left = avr.right;
				}
				else if (options.av_layout == PAV_RIGHT) {
					avr.right = r.right - options.av_padding;
					if (pwd->have_av && options.time_layout == PT_WITHAV) avr.left = avr.right - max(pwd->real_av_width, pwd->time_width);
					else if (pwd->have_av) avr.left = avr.right - pwd->real_av_width;
					else avr.left = avr.right - pwd->time_width;
					r.right = avr.left;
				}

				if (options.time_layout == PT_WITHAV) {
					avr.top = options.padding;
					avr.bottom = avr.top + pwd->time_height;
					if (pwd->custom_col) SetTextColor(ps.hdc, pd->colorText);
					else SetTextColor(ps.hdc, colTime);
					if (hFontTime) SelectObject(hdc, (HGDIOBJ)hFontTime);
					DrawText(ps.hdc, pwd->tbuff, -1, &avr, DT_VCENTER | DT_CENTER | DT_LEFT | DT_SINGLELINE | DT_NOPREFIX);
					avr.top = avr.bottom + options.av_padding;
				}

				if (pwd->have_av) {
					// correct for wider time
					if (options.time_layout == PT_WITHAV && pwd->time_width > options.av_size) {
						avr.left = avr.left + (pwd->time_width - pwd->real_av_width) / 2;
						avr.right = avr.left + pwd->real_av_width;
					}
					avr.bottom = avr.top + pwd->real_av_height;

					AVATARDRAWREQUEST adr = {0};
					adr.cbSize = sizeof(adr);
					adr.hContact = pd->hContact;
					adr.hTargetDC = ps.hdc;
					adr.rcDraw = avr;
					adr.dwFlags = (pwd->av_is_round ? AVDRQ_ROUNDEDCORNER : 0);
					adr.radius = 5; //(pwd->av_is_round ? 5 : 0);

					CallService(MS_AV_DRAWAVATAR, 0, (LPARAM)&adr);
				}
			}

			// title icon
			int iconx, textxmin = r.left + options.padding, textxmax = r.right - options.padding;
			if (pd->hIcon) {
				if (options.right_icon) {
					iconx = r.right - (16 + options.padding);
					textxmax -= 16 + options.padding;
				}
				else {
					iconx = r.left + options.padding;
					textxmin += 16 + options.padding;
				}
				DrawIconEx(ps.hdc, iconx, options.padding + (pwd->tb_height - 16) / 2, pd->hIcon, 16, 16, 0, NULL, DI_NORMAL);
			}

			// title time
			if (options.time_layout == PT_LEFT || options.time_layout == PT_RIGHT) {
				RECT ttr;
				ttr.top = r.top + options.padding; ttr.bottom = ttr.top + pwd->tb_height;
				if (pwd->custom_col) SetTextColor(ps.hdc, pd->colorText);
				else SetTextColor(ps.hdc, colTime);
				if (hFontTime) SelectObject(hdc, (HGDIOBJ)hFontTime);
				switch(options.time_layout) {
				case PT_LEFT:
					ttr.left = textxmin; ttr.right = ttr.left + pwd->time_width;
					textxmin += pwd->time_width + options.padding;
					DrawText(ps.hdc, pwd->tbuff, -1, &ttr, DT_VCENTER | DT_LEFT | DT_SINGLELINE | DT_NOPREFIX);
					break;
				case PT_RIGHT:
					ttr.right = textxmax; ttr.left = ttr.right - pwd->time_width;
					textxmax -= pwd->time_width + options.padding;
					DrawText(ps.hdc, pwd->tbuff, -1, &ttr, DT_VCENTER | DT_LEFT | DT_SINGLELINE | DT_NOPREFIX);
					break;
				}
			}

			if (textxmin < options.sb_width) textxmin = options.sb_width + options.padding / 2;

			// title text
			if (hFontFirstLine) SelectObject(ps.hdc, (HGDIOBJ)hFontFirstLine);
			RECT tr;
			tr.left = r.left + options.padding + options.text_indent; tr.right = textxmax; tr.top = r.top + options.padding; tr.bottom = tr.top + pwd->tb_height;

			if (pwd->custom_col) SetTextColor(ps.hdc, pd->colorText);
			else SetTextColor(ps.hdc, colFirstLine);
			TCHAR *title = mir_u2t(pd->pwzTitle);
			DrawText(ps.hdc, title, -1, &tr, DT_VCENTER | DT_LEFT | DT_END_ELLIPSIS | DT_SINGLELINE | DT_NOPREFIX);
			mir_free(title);

			// title underline
			RECT tur;
			tur.left = r.left + options.sb_width + options.padding;
			tur.right = r.right - options.padding;
			tur.top = tr.bottom + options.padding/2;
			tur.bottom = tur.top + 1;
			FillRect(ps.hdc, &tur, pwd->underlineBrush);

			// second line(s)
			if (pd->pwzText[0]) {
				if (hFontSecondLine) SelectObject(ps.hdc, (HGDIOBJ)hFontSecondLine);
				if (!pwd->custom_col)
					SetTextColor(ps.hdc, colSecondLine);

				// expand text if no avatar and the time isn't too large
				if (options.av_layout != PAV_NONE && options.time_layout == PT_WITHAV && pwd->time_height <= pwd->tb_height && !pwd->have_av)
					GetClientRect(hwnd, &r);

				TCHAR *text = mir_u2t(pd->pwzText);
				tr.left = r.left + options.padding + options.text_indent; tr.right = r.right - options.padding; tr.top = tr.bottom + options.padding; tr.bottom = r.bottom - options.padding;
				DrawText(ps.hdc, text, -1, &tr, DT_NOPREFIX | DT_WORDBREAK | DT_EXTERNALLEADING | DT_TOP | DT_LEFT | DT_WORD_ELLIPSIS);
				mir_free(text);
			}

			EndPaint(hwnd, &ps);
		}
		return 0;

	case WM_DESTROY: 
		if (pwd->mouse_in) global_mouse_in--;

		ShowWindow(hwnd, SW_HIDE);				

		DeleteObject(pwd->bkBrush);
		DeleteObject(pwd->bPen);
		DeleteObject(pwd->barBrush);
		DeleteObject(pwd->underlineBrush);
		KillTimer(hwnd, ID_MOVETIMER);
		KillTimer(hwnd, ID_CLOSETIMER);

		RemoveWindowFromStack(hwnd);

		SendMessage(hwnd, UM_FREEPLUGINDATA, 0, 0);

		if (pd) {
			pd->SetIcon(NULL);
			mir_free(pd->pwzTitle);
			mir_free(pd->pwzText);
			mir_free(pd);
		}
		mir_free(pwd); pwd = 0; pd = 0;
		SetWindowLongPtr(hwnd, GWLP_USERDATA, 0);
		break;

	case PUM_UPDATERGN:
		// round corners
		if (pwd->is_round) {
			HRGN hRgn1;
			RECT r;

			int w = 11;
			GetWindowRect(hwnd,&r);
			int h = (r.right-r.left) > (w*2)?w:(r.right-r.left);
			int v = (r.bottom-r.top) > (w*2)?w:(r.bottom-r.top);
			h=(h<v)?h:v;
			hRgn1=CreateRoundRectRgn(0,0,(r.right-r.left) + 1,(r.bottom-r.top) + 1,h,h);
			SetWindowRgn(hwnd,hRgn1,FALSE);
		}
		return TRUE;

	case PUM_MOVE:
		if (options.animate) {
			KillTimer(hwnd, ID_MOVETIMER);
			pwd->new_x = (int)wParam;
			pwd->new_y = (int)lParam;
			SetTimer(hwnd, ID_MOVETIMER, 10, 0);
		}
		else {
			SetWindowPos(hwnd, 0, (int)wParam, (int)lParam, 0, 0, SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
			if (!IsWindowVisible(hwnd)) { 
				ShowWindow(hwnd, SW_SHOWNOACTIVATE);
				UpdateWindow(hwnd);
			}
		}
		return TRUE;

	case PUM_SETTEXT:
		replaceStrT(pd->ptzText, (TCHAR*)lParam);
		InvalidateRect(hwnd, 0, TRUE);
		RepositionWindows();
		return TRUE;

	case PUM_GETCONTACT:
		{
			MCONTACT *phContact = (MCONTACT*)wParam;
			*phContact = pd->hContact;
			if (lParam)
				SetEvent((HANDLE)lParam);
		}
		return TRUE;

	case PUM_GETHEIGHT:
		{
			int *pHeight = (int*)wParam;
			HDC hdc = GetDC(hwnd);
			SIZE size;
			HFONT hOldFont = (HFONT)GetCurrentObject(hdc, OBJ_FONT);

			// time_height + width
			if (options.time_layout != PT_NONE) {
				SIZE size_t;
				if (hFontTime) SelectObject(hdc, (HGDIOBJ)hFontTime);
				GetTextExtentPoint32(hdc, pwd->tbuff, (int)mir_tstrlen(pwd->tbuff), &size_t);
				pwd->time_height = size_t.cy;
				pwd->time_width = size_t.cx;
			}

			// titlebar height
			if (hFontFirstLine) SelectObject(hdc, (HGDIOBJ)hFontFirstLine);
			TCHAR *title = mir_u2t(pd->pwzTitle);
			GetTextExtentPoint32(hdc, title, (int)mir_tstrlen(title), &size);
			mir_free(title);
			pwd->tb_height = size.cy;
			if (options.time_layout == PT_LEFT || options.time_layout == PT_RIGHT) {
				if (pwd->tb_height < pwd->time_height) pwd->tb_height = pwd->time_height;
			}
			if (pwd->tb_height < 16) pwd->tb_height = 16;

			// avatar height
			if (options.av_layout != PAV_NONE && ServiceExists(MS_AV_DRAWAVATAR)) {
				AVATARCACHEENTRY *ace = (AVATARCACHEENTRY *)CallService(MS_AV_GETAVATARBITMAP, (WPARAM)pd->hContact, 0);
				if (ace && (ace->dwFlags & AVS_BITMAP_VALID) && !(ace->dwFlags & AVS_HIDEONCLIST)) {
					if (ace->bmHeight >= ace->bmWidth) {
						pwd->real_av_height = options.av_size;
						pwd->real_av_width = options.av_size * ace->bmWidth / ace->bmHeight;
					} else {
						pwd->real_av_height = options.av_size * ace->bmHeight / ace->bmWidth;
						pwd->real_av_width = options.av_size;
					}
					pwd->have_av = true;
					pwd->av_height = pwd->real_av_height; 
				}
			}

			// text height
			if (pd->pwzText[0]) {
				RECT r;
				r.left = r.top = 0; 
				r.right = options.win_width - 2 * options.padding - options.text_indent;
				if (pwd->have_av && options.time_layout == PT_WITHAV)
					r.right -= (max(options.av_size, pwd->time_width) + options.padding); 
				else if (pwd->have_av)
					r.right -= (options.av_size + options.padding); 
				else if (options.av_layout != PAV_NONE && options.time_layout == PT_WITHAV && pwd->time_height >= pwd->tb_height)
					r.right -= pwd->time_width + options.padding;

				if (hFontSecondLine) SelectObject(hdc, (HGDIOBJ)hFontSecondLine);
				TCHAR *text = mir_u2t(pd->pwzText);
				DrawText(hdc, text, -1, &r, DT_CALCRECT | DT_NOPREFIX | DT_WORDBREAK | DT_EXTERNALLEADING | DT_TOP | DT_LEFT | DT_WORD_ELLIPSIS);
				pwd->text_height = r.bottom;
				mir_free(text);
			}

			SelectObject(hdc, hOldFont);
			ReleaseDC(hwnd, hdc);

			if (options.time_layout == PT_WITHAV && options.av_layout != PAV_NONE) 
				*pHeight = max(pwd->tb_height + pwd->text_height + 3 * options.padding, pwd->av_height + pwd->time_height + options.padding + 2 * options.av_padding);
			else 
				*pHeight = max(pwd->tb_height + pwd->text_height + 3 * options.padding, pwd->av_height + 2 * options.av_padding);

			if (*pHeight > options.win_max_height) *pHeight = options.win_max_height;

			RECT r;
			GetWindowRect(hwnd, &r);
			if (r.right - r.left != options.win_width || r.bottom - r.top != *pHeight) {
				SetWindowPos(hwnd, 0, 0, 0, options.win_width, *pHeight, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
				SendMessage(hwnd, PUM_UPDATERGN, 0, 0);
				InvalidateRect(hwnd, 0, TRUE);
			}
		}
		return TRUE;

	case PUM_GETOPAQUE:
		{
			void **pData = (void **)wParam;
			if (pd) *pData = pd->opaque;
			if (lParam) SetEvent((HANDLE)lParam);
		}
		return TRUE;

	case PUM_CHANGE:
		{
			KillTimer(hwnd, ID_CLOSETIMER);
			if (pd) {
				mir_free(pd->pwzTitle);
				mir_free(pd->pwzText);
				mir_free(pd);
			}
			pwd->pd = pd = (PopupData *)lParam;

			// make a really long timeout - say 7 days? ;)
			if (pd->timeout == -1)
				SetTimer(hwnd, ID_CLOSETIMER, 7 * 24 * 60 * 60 * 1000, 0);
			else if (pd->timeout == 0)
				SetTimer(hwnd, ID_CLOSETIMER, 7 * 1000, 0);
			else
				SetTimer(hwnd, ID_CLOSETIMER, pd->timeout * 1000, 0);

			InvalidateRect(hwnd, 0, TRUE);
			RepositionWindows();
		}
		return TRUE;

	case PUM_SETNOTIFYH:
		pwd->hNotify = (HANDLE)wParam;
		return TRUE;

	case PUM_UPDATENOTIFY:
		if (pwd->hNotify == (HANDLE)wParam) {
			pd->colorBack = MNotifyGetDWord(pwd->hNotify, NFOPT_BACKCOLOR, colBg);
			pd->colorText = MNotifyGetDWord(pwd->hNotify, NFOPT_TEXTCOLOR, colSecondLine);
			pd->timeout = MNotifyGetDWord(pwd->hNotify, NFOPT_TIMEOUT, options.default_timeout);
			pd->hContact = (MCONTACT)MNotifyGetDWord(pwd->hNotify, NFOPT_CONTACT, 0);
			pd->hIcon = (HICON)MNotifyGetDWord(pwd->hNotify, NFOPT_ICON, 0);

			const wchar_t *swzName = MNotifyGetWString(pwd->hNotify, NFOPT_TITLEW, 0);
			mir_free(pd->pwzTitle);
			pd->pwzTitle = mir_wstrdup(swzName);

			const wchar_t *swzText = MNotifyGetWString(pwd->hNotify, NFOPT_TEXTW, 0);
			mir_free(pd->pwzText);
			pd->pwzText = mir_wstrdup(swzText);

			InvalidateRect(hwnd, 0, TRUE);
			RepositionWindows();
		}
		return TRUE;

	case PUM_KILLNOTIFY:
		if (pwd->hNotify != (HANDLE)wParam)
			return TRUE;
		// drop through

	case UM_DESTROYPOPUP:
		PostMPMessage(MUM_DELETEPOPUP, 0, (LPARAM)hwnd);
		return TRUE;
	}

	if (pd && pd->windowProc)
		return CallWindowProc(pd->windowProc, hwnd, uMsg, wParam, lParam);
	
	// provide a way to close popups, if no PluginWindowProc is provided
	if (uMsg == WM_CONTEXTMENU) {
		SendMessage(hwnd, UM_DESTROYPOPUP, 0, 0);
		return TRUE;
	}
	
	return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

void PopupData::SetIcon(HICON hNewIcon)
{
	if (flags & PDF_ICOLIB) {
		Skin_ReleaseIcon(hIcon);
		flags &= ~PDF_ICOLIB;
	}

	hIcon = hNewIcon;

	if ( CallService(MS_SKIN2_ISMANAGEDICON, (WPARAM)hIcon, 0)) {
		CallService(MS_SKIN2_ADDREFICON, (WPARAM)hIcon, 0);
		flags |= PDF_ICOLIB;
	}
}