/////////////////////////////////////////////////////////////////////////////////////////
// Miranda NG: the free IM client for Microsoft* Windows*
//
// Copyright (C) 2012-24 Miranda NG team,
// Copyright (c) 2000-09 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.
//
// part of tabSRMM messaging plugin for Miranda.
//
// (C) 2005-2010 by silvercircle _at_ gmail _dot_ com and contributors
//
// Implements the skinning engine and most parts of the aero support in
// tabSRMM 3.x+

#include "stdafx.h"

static SKINDESC my_default_skin[] = {
	IDR_SKIN_AERO, L"tabskin_aero.png",
	IDR_SKIN_AERO_GLOW, L"tabskin_aero_glow.png",
	IDR_SKIN_AERO_SWITCHBAR, L"tabskin_aero_button.png",
	IDR_SKIN_LOGO, L"unknown.png"
};

CSkin* Skin = nullptr;


static void __inline gradientVertical(UCHAR *ubRedFinal, UCHAR *ubGreenFinal, UCHAR *ubBlueFinal,
	ULONG ulBitmapHeight, UCHAR ubRed, UCHAR ubGreen, UCHAR ubBlue, UCHAR ubRed2,
	UCHAR ubGreen2, UCHAR ubBlue2, uint32_t FLG_GRADIENT, BOOL transparent, UINT32 y, UCHAR *ubAlpha);

static void __inline gradientHorizontal(UCHAR *ubRedFinal, UCHAR *ubGreenFinal, UCHAR *ubBlueFinal,
	ULONG ulBitmapWidth, UCHAR ubRed, UCHAR ubGreen, UCHAR ubBlue, UCHAR ubRed2,
	UCHAR ubGreen2, UCHAR ubBlue2, uint32_t FLG_GRADIENT, BOOL transparent, UINT32 x, UCHAR *ubAlpha);


UINT 		nextButtonID;
ButtonSet 	g_ButtonSet = {};

#define   	NR_MAXSKINICONS 100

/*
// initialize static class data
*/

int           CSkin::m_bAvatarBorderType = 0;
COLORREF      CSkin::m_avatarBorderClr = 0;
COLORREF      CSkin::m_tmp_tb_low = 0, CSkin::m_tmp_tb_high = 0;
COLORREF      CSkin::m_sideBarContainerBG;

// a global blend function, used in various places
// when you use it, reset SourceConstantAlpha to 255 and
// the blending mode to AC_SRC_ALPHA.
BLENDFUNCTION CSkin::m_default_bf = { 0 };

bool CSkin::m_bClipBorder = false, CSkin::m_DisableScrollbars = false,
CSkin::m_skinEnabled = false, CSkin::m_frameSkins = false;

char CSkin::m_SkinnedFrame_left = 0, CSkin::m_SkinnedFrame_right = 0,
CSkin::m_SkinnedFrame_bottom = 0, CSkin::m_SkinnedFrame_caption = 0;

char CSkin::m_realSkinnedFrame_left = 0;
char CSkin::m_realSkinnedFrame_right = 0;
char CSkin::m_realSkinnedFrame_bottom = 0;
char CSkin::m_realSkinnedFrame_caption = 0;

int  CSkin::m_titleBarLeftOff = 0, CSkin::m_titleButtonTopOff = 0, CSkin::m_captionOffset = 0, CSkin::m_captionPadding = 0,
CSkin::m_titleBarRightOff = 0, CSkin::m_sidebarTopOffset = 0, CSkin::m_sidebarBottomOffset = 0, CSkin::m_bRoundedCorner = 0;

CImageItem *CSkin::m_switchBarItem = nullptr, *CSkin::m_tabTop = nullptr, *CSkin::m_tabBottom = nullptr, *CSkin::m_tabGlowTop = nullptr, *CSkin::m_tabGlowBottom = nullptr;

bool CSkin::m_fAeroSkinsValid = false;

SIZE CSkin::m_titleBarButtonSize = { 0 };

COLORREF CSkin::m_ContainerColorKey = 0, CSkin::m_dwmColorRGB = 0, CSkin::m_DefaultFontColor = 0;
HBRUSH   CSkin::m_ContainerColorKeyBrush = nullptr, CSkin::m_MenuBGBrush = nullptr;

HPEN     CSkin::m_SkinLightShadowPen = nullptr, CSkin::m_SkinDarkShadowPen = nullptr;

HICON    CSkin::m_closeIcon = nullptr, CSkin::m_maxIcon = nullptr, CSkin::m_minIcon = nullptr;

UINT     CSkin::m_aeroEffect = 0;
uint32_t CSkin::m_glowSize = 0;
HBRUSH   CSkin::m_BrushBack = nullptr, CSkin::m_BrushFill = nullptr;

HBITMAP  CSkin::m_tabCloseBitmap = nullptr, CSkin::m_tabCloseOldBitmap = nullptr;
HDC      CSkin::m_tabCloseHDC = nullptr;

// aero effects

AeroEffect CSkin::m_currentAeroEffect;
AeroEffect *CSkin::m_pCurrentAeroEffect = nullptr;

AeroEffect  CSkin::m_aeroEffects[AERO_EFFECT_LAST] = {
	{
		LPGENW("No effect"), 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, nullptr
	},
	{
		LPGENW("Milky Glass"),
		0xf5f5f5, 									/* base color */
		0xaaaaaa,									/* gradient color */
		70,											/* base alpha */
		0,											/* final alpha */
		CORNER_ALL,									/* corner type */
		GRADIENT_TB + 1,							/* gradient type */
		8,											/* corner radius */
		8,											/* glow size (0 means no glowing text, colors can be used) */
		0,											/* background color (black = transparency) */
		0xf0f0f0,									/* toolbar first color (if 0, use custom gradient color) */
		0, 											/* toolbar 2nd gradient color (0 = use aero theme color, -1 = use custom gradient color  */
		AeroEffectCallback_Milk						/* callback function to render the effect */
	},
	{
		LPGENW("Carbon"),
		0xf0f0f0,
		0x000000,
		75,
		0,
		CORNER_ALL,
		GRADIENT_TB + 1,
		6,
		8,
		0,
		0xf0f0f0,
		0,
		AeroEffectCallback_Carbon
	},
	{
		LPGENW("Semi transparent, custom colors"),
		0xffffff,
		0x444444,
		60,
		0,
		CORNER_ALL,
		GRADIENT_TB + 1,
		6,
		0,
		0x0,
		0xf0f0f0,
		0,
		AeroEffectCallback_Solid
	},
	{
		LPGENW("Silver shadow"),
		0xffffff,
		0xa0a0a0,
		80,
		220,
		0,
		GRADIENT_TB + 1,
		1,
		0,
		0xc0c0c0,
		0xf0f0f0,
		0x707070,
		AeroEffectCallback_Solid
	},
	{
		LPGENW("Custom (use own gradient colors)"),
		0xffffff,
		0xa0a0a0,
		80,
		220,
		0,
		GRADIENT_TB + 1,
		1,
		0,
		0xc0c0c0,
		uint32_t(-1),
		uint32_t(-1),
		AeroEffectCallback_Solid
	},
	{
		LPGENW("Custom 2 (use own gradient colors)"),	
		0xF0F0F0,											/* base color */
		0xF0F0F0,											/* gradient color */
		255,											/* base alpha */
		0,												/* final alpha */
		0,												/* corner type */
		GRADIENT_TB + 1,								/* gradient type */
		0,												/* corner radius */
		0,												/* glow size (0 means no glowing text, colors can be used) */
		0x0,											/* background color (black = transparency) */
		0xffffff,										/* toolbar first color (if 0, use custom gradient color) */
		0xffffff,										/* toolbar 2nd gradient color (0 = use aero theme color, -1 = use custom gradient color  */
		AeroEffectCallback_Solid						/* callback function to render the effect */
	}
};

// definition of the availbale skin items

CSkinItem SkinItems[] = {
	{ L"Container", "TSKIN_Container", ID_EXTBKCONTAINER,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Toolbar", "TSKIN_Container", ID_EXTBKBUTTONBAR,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"{-}Buttonpressed", "TSKIN_BUTTONSPRESSED", ID_EXTBKBUTTONSPRESSED,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Buttonnotpressed", "TSKIN_BUTTONSNPRESSED", ID_EXTBKBUTTONSNPRESSED,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Buttonmouseover", "TSKIN_BUTTONSMOUSEOVER", ID_EXTBKBUTTONSMOUSEOVER,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Infopanelfield", "TSKIN_INFOPANELFIELD", ID_EXTBKINFOPANEL,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Titlebutton", "TSKIN_TITLEBUTTON", ID_EXTBKTITLEBUTTON,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Titlebuttonmouseover", "TSKIN_TITLEBUTTONHOVER", ID_EXTBKTITLEBUTTONMOUSEOVER,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Titlebuttonpressed", "TSKIN_TITLEBUTTONPRESSED", ID_EXTBKTITLEBUTTONPRESSED,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabpage", "TSKIN_TABPAGE", ID_EXTBKTABPAGE,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem", "TSKIN_TABITEM", ID_EXTBKTABITEM,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem_active", "TSKIN_TABITEMACTIVE", ID_EXTBKTABITEMACTIVE,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem_bottom", "TSKIN_TABITEMBOTTOM", ID_EXTBKTABITEMBOTTOM,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem_active_bottom", "TSKIN_TABITEMACTIVEBOTTOM", ID_EXTBKTABITEMACTIVEBOTTOM,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Frame", "TSKIN_FRAME", ID_EXTBKFRAME,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"MessageLog", "TSKIN_MLOG", ID_EXTBKHISTORY,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"InputArea", "TSKIN_INPUT", ID_EXTBKINPUTAREA,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"FrameInactive", "TSKIN_FRAMEINACTIVE", ID_EXTBKFRAMEINACTIVE,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem_hottrack", "TSKIN_TABITEMHOTTRACK", ID_EXTBKTABITEMHOTTRACK,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Tabitem_hottrack_bottom", "TSKIN_TABITEMHOTTRACKBOTTOM", ID_EXTBKTABITEMHOTTRACKBOTTOM,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Statusbarpanel", "TSKIN_STATUSBARPANEL", ID_EXTBKSTATUSBARPANEL,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Statusbar", "TSKIN_STATUSBAR", ID_EXTBKSTATUSBAR,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"Userlist", "TSKIN_USERLIST", ID_EXTBKUSERLIST,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
	}, { L"InfoPanelBackground", "TSKIN_INFOPANELBG", ID_EXTBKINFOPANELBG,
	8, CLCDEFAULT_CORNER,
	0xf0f0f0, 0x42b1ff, 1, CLCDEFAULT_TEXTCOLOR, 40, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE, 0, nullptr
	}, { L"Sidebar Background", "TSKIN_SIDEBARBG", ID_EXTBKSIDEBARBG,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	0xb2e1ff, 0xb2e1ff, 1, CLCDEFAULT_TEXTCOLOR, 40, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE, 0, nullptr
	}
};

static CSkinItem _defInfoPanel = {
	L"InfoPanelBackground", "TSKIN_INFOPANELBG", ID_EXTBKINFOPANELBG,
	8, CLCDEFAULT_CORNER,
	0xf0f0f0, 0x62caff, 0, CLCDEFAULT_TEXTCOLOR, 255, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE, 0, nullptr
};

static uint8_t __inline percent_to_byte(UINT32 percent)
{
	return(uint8_t)((FLOAT)(((FLOAT)percent) / 100) * 255);
}

static COLORREF __inline revcolref(COLORREF colref)
{
	return RGB(GetBValue(colref), GetGValue(colref), GetRValue(colref));
}

static uint32_t __inline argb_from_cola(COLORREF col, UINT32 alpha)
{
	return((uint8_t)percent_to_byte(alpha) << 24 | col);
}

void TSAPI  DrawAlpha(HDC hDC, PRECT rc, uint32_t clr_base, int alpha, uint32_t clr_dest, uint8_t clr_dest_trans, uint8_t bGradient,
	uint8_t bCorner, uint32_t dwRadius, CImageItem *imageItem)
{
	if (rc == nullptr)
		return;

	LONG realHeight = (rc->bottom - rc->top);
	LONG realWidth = (rc->right - rc->left);
	LONG realHeightHalf = realHeight >> 1;

	if (imageItem) {
		imageItem->Render(hDC, rc, false);
		return;
	}

	if (rc->right < rc->left || rc->bottom < rc->top || (realHeight <= 0) || (realWidth <= 0))
		return;

	// use GDI fast gradient drawing when no corner radi exist
	if (bCorner == 0 && dwRadius == 0) {
		GRADIENT_RECT grect;
		TRIVERTEX tvtx[2];
		int orig = 1, dest = 0;

		if (bGradient & GRADIENT_LR || bGradient & GRADIENT_TB) {
			orig = 0;
			dest = 1;
		}

		tvtx[0].x = rc->left;
		tvtx[0].y = rc->top;
		tvtx[1].x = rc->right;
		tvtx[1].y = rc->bottom;

		tvtx[orig].Red = (COLOR16)GetRValue(clr_base) << 8;
		tvtx[orig].Blue = (COLOR16)GetBValue(clr_base) << 8;
		tvtx[orig].Green = (COLOR16)GetGValue(clr_base) << 8;
		tvtx[orig].Alpha = (COLOR16)alpha << 8;

		tvtx[dest].Red = (COLOR16)GetRValue(clr_dest) << 8;
		tvtx[dest].Blue = (COLOR16)GetBValue(clr_dest) << 8;
		tvtx[dest].Green = (COLOR16)GetGValue(clr_dest) << 8;
		tvtx[dest].Alpha = (COLOR16)alpha << 8;

		grect.UpperLeft = 0;
		grect.LowerRight = 1;

		GdiGradientFill(hDC, tvtx, 2, &grect, 1, (bGradient & GRADIENT_TB || bGradient & GRADIENT_BT) ? GRADIENT_FILL_RECT_V : GRADIENT_FILL_RECT_H);
		return;
	}

	HDC hdc = CreateCompatibleDC(hDC);
	if (!hdc)
		return;

	BITMAPINFO bmi;
	memset(&bmi, 0, sizeof(BITMAPINFO));
	bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

	int ulBitmapWidth, ulBitmapHeight;
	if (bGradient & GRADIENT_ACTIVE && (bGradient & GRADIENT_LR || bGradient & GRADIENT_RL)) {
		bmi.bmiHeader.biWidth = ulBitmapWidth = realWidth;
		bmi.bmiHeader.biHeight = ulBitmapHeight = 1;
	}
	else if (bGradient & GRADIENT_ACTIVE && (bGradient & GRADIENT_TB || bGradient & GRADIENT_BT)) {
		bmi.bmiHeader.biWidth = ulBitmapWidth = 1;
		bmi.bmiHeader.biHeight = ulBitmapHeight = realHeight;
	}
	else {
		bmi.bmiHeader.biWidth = ulBitmapWidth = 1;
		bmi.bmiHeader.biHeight = ulBitmapHeight = 1;
	}

	bmi.bmiHeader.biPlanes = 1;
	bmi.bmiHeader.biBitCount = 32;
	bmi.bmiHeader.biCompression = BI_RGB;
	bmi.bmiHeader.biSizeImage = ulBitmapWidth * ulBitmapHeight * 4;

	if (ulBitmapWidth <= 0 || ulBitmapHeight <= 0)
		return;

	void *pvBits;
	HBITMAP hbitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &pvBits, nullptr, 0x0);
	if (hbitmap == nullptr || pvBits == nullptr) {
		DeleteDC(hdc);
		return;
	}

	HBITMAP holdbitmap = (HBITMAP)SelectObject(hdc, hbitmap);

	// convert basecolor to RGB and then merge alpha so its ARGB
	clr_base = argb_from_cola(revcolref(clr_base), alpha);
	clr_dest = argb_from_cola(revcolref(clr_dest), alpha);

	UCHAR ubRed = (UCHAR)(clr_base >> 16);
	UCHAR ubGreen = (UCHAR)(clr_base >> 8);
	UCHAR ubBlue = (UCHAR)clr_base;

	UCHAR ubRed2 = (UCHAR)(clr_dest >> 16);
	UCHAR ubGreen2 = (UCHAR)(clr_dest >> 8);
	UCHAR ubBlue2 = (UCHAR)clr_dest;

	// DRAW BASE - make corner space 100% transparent
	UCHAR ubAlpha = 0xFF;
	UCHAR ubRedFinal = 0xFF;
	UCHAR ubGreenFinal = 0xFF;
	UCHAR ubBlueFinal = 0xFF;

	for (int y = 0; y < ulBitmapHeight; y++) {
		for (int x = 0; x < ulBitmapWidth; x++) {
			if (bGradient & GRADIENT_ACTIVE) {
				if (bGradient & GRADIENT_LR || bGradient & GRADIENT_RL) {
					int realx = x + realHeightHalf;
					realx = realx > ulBitmapWidth ? ulBitmapWidth : realx;
					gradientHorizontal(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, ulBitmapWidth, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, realx, &ubAlpha);
				}
				else if (bGradient & GRADIENT_TB || bGradient & GRADIENT_BT)
					gradientVertical(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, ulBitmapHeight, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, y, &ubAlpha);

				float fAlphaFactor = (float)ubAlpha / (float)0xff;
				((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
			}
			else {
				ubAlpha = percent_to_byte(alpha);
				ubRedFinal = ubRed;
				ubGreenFinal = ubGreen;
				ubBlueFinal = ubBlue;
				float fAlphaFactor = (float)ubAlpha / (float)0xff;

				((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
			}
		}
	}

	BLENDFUNCTION bf;
	bf.BlendOp = AC_SRC_OVER;
	bf.BlendFlags = 0;
	bf.SourceConstantAlpha = (UCHAR)(clr_base >> 24);
	bf.AlphaFormat = AC_SRC_ALPHA; // so it will use our specified alpha value

	GdiAlphaBlend(hDC, rc->left + realHeightHalf, rc->top, (realWidth - realHeightHalf * 2), realHeight, hdc, 0, 0, ulBitmapWidth, ulBitmapHeight, bf);

	SelectObject(hdc, holdbitmap);
	DeleteObject(hbitmap);

	// corners
	HBRUSH BrMask = CreateSolidBrush(RGB(0xFF, 0x00, 0xFF));
	bmi.bmiHeader.biWidth = ulBitmapWidth = realHeightHalf;
	bmi.bmiHeader.biHeight = ulBitmapHeight = realHeight;
	bmi.bmiHeader.biSizeImage = ulBitmapWidth * ulBitmapHeight * 4;

	if (ulBitmapWidth <= 0 || ulBitmapHeight <= 0) {
		DeleteDC(hdc);
		DeleteObject(BrMask);
		return;
	}

	// TL+BL CORNER
	hbitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &pvBits, nullptr, 0x0);
	if (hbitmap == nullptr || pvBits == nullptr)  {
		DeleteObject(BrMask);
		DeleteDC(hdc);
		return;
	}

	HBRUSH holdbrush = (HBRUSH)SelectObject(hdc, BrMask);
	holdbitmap = (HBITMAP)SelectObject(hdc, hbitmap);
	RoundRect(hdc, -1, -1, ulBitmapWidth * 2 + 1, (realHeight + 1), dwRadius, dwRadius);

	for (int y = 0; y < ulBitmapHeight; y++) {
		for (int x = 0; x < ulBitmapWidth; x++) {
			if (((((UINT32 *)pvBits)[x + y * ulBitmapWidth]) << 8) == 0xFF00FF00 || (y < ulBitmapHeight >> 1 && !(bCorner & CORNER_BL && bCorner & CORNER_ACTIVE)) || (y > ulBitmapHeight >> 2 && !(bCorner & CORNER_TL && bCorner & CORNER_ACTIVE))) {
				if (bGradient & GRADIENT_ACTIVE) {
					if (bGradient & GRADIENT_LR || bGradient & GRADIENT_RL)
						gradientHorizontal(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, realWidth, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, x, &ubAlpha);
					else if (bGradient & GRADIENT_TB || bGradient & GRADIENT_BT)
						gradientVertical(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, ulBitmapHeight, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, y, &ubAlpha);

					float fAlphaFactor = (float)ubAlpha / (float)0xff;
					((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
				}
				else {
					ubAlpha = percent_to_byte(alpha);
					ubRedFinal = ubRed;
					ubGreenFinal = ubGreen;
					ubBlueFinal = ubBlue;
					float fAlphaFactor = (float)ubAlpha / (float)0xff;

					((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
				}
			}
		}
	}
	GdiAlphaBlend(hDC, rc->left, rc->top, ulBitmapWidth, ulBitmapHeight, hdc, 0, 0, ulBitmapWidth, ulBitmapHeight, bf);
	SelectObject(hdc, holdbitmap);
	DeleteObject(hbitmap);

	// TR+BR CORNER
	hbitmap = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, &pvBits, nullptr, 0x0);
	holdbitmap = (HBITMAP)SelectObject(hdc, hbitmap);
	RoundRect(hdc, -1 - ulBitmapWidth, -1, ulBitmapWidth + 1, (realHeight + 1), dwRadius, dwRadius);

	for (int y = 0; y < ulBitmapHeight; y++) {
		for (int x = 0; x < ulBitmapWidth; x++) {
			if (((((UINT32 *)pvBits)[x + y * ulBitmapWidth]) << 8) == 0xFF00FF00 || (y < ulBitmapHeight >> 1 && !(bCorner & CORNER_BR && bCorner & CORNER_ACTIVE)) || (y > ulBitmapHeight >> 1 && !(bCorner & CORNER_TR && bCorner & CORNER_ACTIVE))) {
				if (bGradient & GRADIENT_ACTIVE) {
					if (bGradient & GRADIENT_LR || bGradient & GRADIENT_RL) {
						int realx = x + realWidth;
						realx = realx > realWidth ? realWidth : realx;
						gradientHorizontal(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, realWidth, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, realx, &ubAlpha);
					}
					else if (bGradient & GRADIENT_TB || bGradient & GRADIENT_BT)
						gradientVertical(&ubRedFinal, &ubGreenFinal, &ubBlueFinal, ulBitmapHeight, ubRed, ubGreen, ubBlue, ubRed2, ubGreen2, ubBlue2, bGradient, clr_dest_trans, y, &ubAlpha);

					float fAlphaFactor = (float)ubAlpha / (float)0xff;
					((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
				}
				else {
					ubAlpha = percent_to_byte(alpha);
					ubRedFinal = ubRed;
					ubGreenFinal = ubGreen;
					ubBlueFinal = ubBlue;
					float fAlphaFactor = (float)ubAlpha / (float)0xff;

					((UINT32 *)pvBits)[x + y * ulBitmapWidth] = (ubAlpha << 24) | ((UCHAR)(ubRedFinal * fAlphaFactor) << 16) | ((UCHAR)(ubGreenFinal * fAlphaFactor) << 8) | ((UCHAR)(ubBlueFinal * fAlphaFactor));
				}
			}
		}
	}
	GdiAlphaBlend(hDC, rc->right - realHeightHalf, rc->top, ulBitmapWidth, ulBitmapHeight, hdc, 0, 0, ulBitmapWidth, ulBitmapHeight, bf);

	SelectObject(hdc, holdbitmap);
	DeleteObject(hbitmap);
	SelectObject(hdc, holdbrush);
	DeleteObject(BrMask);
	DeleteDC(hdc);
}

void __inline gradientHorizontal(UCHAR *ubRedFinal, UCHAR *ubGreenFinal, UCHAR *ubBlueFinal, ULONG ulBitmapWidth, UCHAR ubRed, UCHAR ubGreen, UCHAR ubBlue, UCHAR ubRed2, UCHAR ubGreen2, UCHAR ubBlue2, uint32_t FLG_GRADIENT, BOOL transparent, UINT32 x, UCHAR *ubAlpha)
{
	FLOAT fSolidMulti, fInvSolidMulti;

	// solid to transparent
	if (transparent) {
		*ubAlpha = (UCHAR)((float)x / (float)ulBitmapWidth * 255);
		*ubAlpha = FLG_GRADIENT & GRADIENT_LR ? 0xFF - (*ubAlpha) : (*ubAlpha);
		*ubRedFinal = ubRed;
		*ubGreenFinal = ubGreen;
		*ubBlueFinal = ubBlue;
	}
	else { // solid to solid2
		if (FLG_GRADIENT & GRADIENT_LR) {
			fSolidMulti = ((float)x / (float)ulBitmapWidth);
			fInvSolidMulti = 1 - fSolidMulti;
		}
		else {
			fInvSolidMulti = ((float)x / (float)ulBitmapWidth);
			fSolidMulti = 1 - fInvSolidMulti;
		}

		*ubRedFinal = (UCHAR)((((float)ubRed * (float)fInvSolidMulti)) + (((float)ubRed2 * (float)fSolidMulti)));
		*ubGreenFinal = (UCHAR)((UCHAR)(((float)ubGreen * (float)fInvSolidMulti)) + (((float)ubGreen2 * (float)fSolidMulti)));
		*ubBlueFinal = (UCHAR)((((float)ubBlue * (float)fInvSolidMulti)) + (UCHAR)(((float)ubBlue2 * (float)fSolidMulti)));

		*ubAlpha = 0xFF;
	}
}

void __inline gradientVertical(UCHAR *ubRedFinal, UCHAR *ubGreenFinal, UCHAR *ubBlueFinal, ULONG ulBitmapHeight, UCHAR ubRed, UCHAR ubGreen, UCHAR ubBlue, UCHAR ubRed2, UCHAR ubGreen2, UCHAR ubBlue2, uint32_t FLG_GRADIENT, BOOL transparent, UINT32 y, UCHAR *ubAlpha)
{
	// solid to transparent
	if (transparent) {
		*ubAlpha = (UCHAR)((float)y / (float)ulBitmapHeight * 255);
		*ubAlpha = FLG_GRADIENT & GRADIENT_BT ? 0xFF - *ubAlpha : *ubAlpha;
		*ubRedFinal = ubRed;
		*ubGreenFinal = ubGreen;
		*ubBlueFinal = ubBlue;
	}
	else { // solid to solid2
		FLOAT fSolidMulti, fInvSolidMulti;
		if (FLG_GRADIENT & GRADIENT_BT) {
			fSolidMulti = ((float)y / (float)ulBitmapHeight);
			fInvSolidMulti = 1 - fSolidMulti;
		}
		else {
			fInvSolidMulti = ((float)y / (float)ulBitmapHeight);
			fSolidMulti = 1 - fInvSolidMulti;
		}

		*ubRedFinal = (UCHAR)((((float)ubRed * (float)fInvSolidMulti)) + (((float)ubRed2 * (float)fSolidMulti)));
		*ubGreenFinal = (UCHAR)((((float)ubGreen * (float)fInvSolidMulti)) + (((float)ubGreen2 * (float)fSolidMulti)));
		*ubBlueFinal = (UCHAR)(((float)ubBlue * (float)fInvSolidMulti)) + (UCHAR)(((float)ubBlue2 * (float)fSolidMulti));

		*ubAlpha = 0xFF;
	}
}

/////////////////////////////////////////////////////////////////////////////////////////
// Renders the image item to the given target device context and rectangle
//
// @param hdc    HDC: target device context
// @param rc     RECT *: client rectangle inside the target DC.
// @param fIgnoreGlyph: bool: will ignore any glyph item. Set it to true when
//                      using this function from _outside_ a skin

void __fastcall CImageItem::Render(const HDC hdc, const RECT *rc, bool fIgnoreGlyph) const
{
	uint8_t l = m_bLeft, r = m_bRight, t = m_bTop, b = m_bBottom;
	LONG width = rc->right - rc->left;
	LONG height = rc->bottom - rc->top;
	BOOL isGlyph = ((m_dwFlags & IMAGE_GLYPH) && Skin->haveGlyphItem());
	BOOL fCleanUp = TRUE;
	HDC hdcSrc = nullptr;
	HBITMAP hbmOld = nullptr;
	LONG srcOrigX = isGlyph ? m_glyphMetrics[0] : 0;
	LONG srcOrigY = isGlyph ? m_glyphMetrics[1] : 0;

	if (m_hdc == nullptr) {
		hdcSrc = CreateCompatibleDC(hdc);
		hbmOld = (HBITMAP)SelectObject(hdcSrc, isGlyph ? Skin->getGlyphItem()->getHbm() : m_hbm);
	}
	else {
		if (fIgnoreGlyph)
			hdcSrc = m_hdc;
		else
			hdcSrc = isGlyph ? Skin->getGlyphItem()->getDC() : m_hdc;
		fCleanUp = FALSE;
	}

	if (m_dwFlags & IMAGE_FLAG_DIVIDED) {
		// top 3 items

		GdiAlphaBlend(hdc, rc->left, rc->top, l, t, hdcSrc, srcOrigX, srcOrigY, l, t, m_bf);
		GdiAlphaBlend(hdc, rc->left + l, rc->top, width - l - r, t, hdcSrc, srcOrigX + l, srcOrigY, m_inner_width, t, m_bf);
		GdiAlphaBlend(hdc, rc->right - r, rc->top, r, t, hdcSrc, srcOrigX + (m_width - r), srcOrigY, r, t, m_bf);

		// middle 3 items

		GdiAlphaBlend(hdc, rc->left, rc->top + t, l, height - t - b, hdcSrc, srcOrigX, srcOrigY + t, l, m_inner_height, m_bf);

		if ((m_dwFlags & IMAGE_FILLSOLID) && m_fillBrush) {
			RECT rcFill;
			rcFill.left = rc->left + l;
			rcFill.top = rc->top + t;
			rcFill.right = rc->right - r;
			rcFill.bottom = rc->bottom - b;
			FillRect(hdc, &rcFill, m_fillBrush);
		}
		else
			GdiAlphaBlend(hdc, rc->left + l, rc->top + t, width - l - r, height - t - b, hdcSrc, srcOrigX + l, srcOrigY + t, m_inner_width, m_inner_height, m_bf);

		GdiAlphaBlend(hdc, rc->right - r, rc->top + t, r, height - t - b, hdcSrc, srcOrigX + (m_width - r), srcOrigY + t, r, m_inner_height, m_bf);

		// bottom 3 items

		GdiAlphaBlend(hdc, rc->left, rc->bottom - b, l, b, hdcSrc, srcOrigX, srcOrigY + (m_height - b), l, b, m_bf);
		GdiAlphaBlend(hdc, rc->left + l, rc->bottom - b, width - l - r, b, hdcSrc, srcOrigX + l, srcOrigY + (m_height - b), m_inner_width, b, m_bf);
		GdiAlphaBlend(hdc, rc->right - r, rc->bottom - b, r, b, hdcSrc, srcOrigX + (m_width - r), srcOrigY + (m_height - b), r, b, m_bf);
	}
	else switch (m_bStretch) {
	case IMAGE_STRETCH_H:
		// tile image vertically, stretch to width
	{
		LONG top = rc->top;

		do {
			if (top + m_height <= rc->bottom) {
				GdiAlphaBlend(hdc, rc->left, top, width, m_height, hdcSrc, srcOrigX, srcOrigY, m_width, m_height, m_bf);
				top += m_height;
			}
			else {
				GdiAlphaBlend(hdc, rc->left, top, width, rc->bottom - top, hdcSrc, srcOrigX, srcOrigY, m_width, rc->bottom - top, m_bf);
				break;
			}
		} while (true);
	}
	break;

	case IMAGE_STRETCH_V:
		// tile horizontally, stretch to height
	{
		LONG left = rc->left;

		do {
			if (left + m_width <= rc->right) {
				GdiAlphaBlend(hdc, left, rc->top, m_width, height, hdcSrc, srcOrigX, srcOrigY, m_width, m_height, m_bf);
				left += m_width;
			}
			else {
				GdiAlphaBlend(hdc, left, rc->top, rc->right - left, height, hdcSrc, srcOrigX, srcOrigY, rc->right - left, m_height, m_bf);
				break;
			}
		} while (true);
	}
	break;

	case IMAGE_STRETCH_B:
		// stretch the image in both directions...
		GdiAlphaBlend(hdc, rc->left, rc->top, width, height, hdcSrc, srcOrigX, srcOrigY, m_width, m_height, m_bf);
		break;
	}

	if (fCleanUp) {
		SelectObject(hdcSrc, hbmOld);
		DeleteDC(hdcSrc);
	}
}

static CSkinItem StatusItem_Default = {
	L"Container", "EXBK_Offline", ID_EXTBKCONTAINER,
	CLCDEFAULT_GRADIENT, CLCDEFAULT_CORNER,
	CLCDEFAULT_COLOR, CLCDEFAULT_COLOR2, CLCDEFAULT_COLOR2_TRANSPARENT, CLCDEFAULT_TEXTCOLOR, CLCDEFAULT_ALPHA, CLCDEFAULT_MRGN_LEFT,
	CLCDEFAULT_MRGN_TOP, CLCDEFAULT_MRGN_RIGHT, CLCDEFAULT_MRGN_BOTTOM, CLCDEFAULT_IGNORE
};

static struct
{
	wchar_t *szIniKey, *szIniName;
	char *szSetting;
	unsigned int size;
	int defaultval;
} _tagSettings[] = {
	L"Global", L"SbarHeight", "S_sbarheight", 1, 22,
	L"ClientArea", L"Left", "S_tborder_outer_left", 1, 0,
	L"ClientArea", L"Right", "S_tborder_outer_right", 1, 0,
	L"ClientArea", L"Top", "S_tborder_outer_top", 1, 0,
	L"ClientArea", L"Bottom", "S_tborder_outer_bottom", 1, 0,
	L"ClientArea", L"Inner", "S_tborder", 1, 0,
	L"Global", L"TabTextNormal", "S_tab_txt_normal", 5, 0,
	L"Global", L"TabTextActive", "S_tab_txt_active", 5, 0,
	L"Global", L"TabTextUnread", "S_tab_txt_unread", 5, 0,
	L"Global", L"TabTextHottrack", "S_tab_txt_hottrack", 5, 0,
	nullptr, nullptr, nullptr, 0, 0
};

void CImageItem::Create(const wchar_t *szImageFile)
{
	HBITMAP hbm = Bitmap_Load(szImageFile);

	m_hdc = nullptr;
	m_hbmOld = nullptr;
	m_hbm = nullptr;

	if (hbm) {
		m_hbm = hbm;
		m_bf.BlendFlags = 0;
		m_bf.BlendOp = AC_SRC_OVER;
		m_bf.AlphaFormat = 0;

		BITMAP bm;
		GetObject(hbm, sizeof(bm), &bm);
		if (bm.bmBitsPixel == 32 && m_dwFlags & IMAGE_PERPIXEL_ALPHA) {
			CImageItem::PreMultiply(m_hbm, 1);
			m_bf.AlphaFormat = AC_SRC_ALPHA;
		}
		m_width = bm.bmWidth;
		m_height = bm.bmHeight;
		m_inner_height = m_height - m_bTop - m_bBottom;
		m_inner_width = m_width - m_bLeft - m_bRight;
		if (m_bTop && m_bBottom && m_bLeft && m_bRight) {
			m_dwFlags |= IMAGE_FLAG_DIVIDED;
			if (m_inner_height <= 0 || m_inner_width <= 0) {
				DeleteObject(hbm);
				m_hbm = nullptr;
				return;
			}
		}
	}
}

/////////////////////////////////////////////////////////////////////////////////////////
// Reads the definitions for an image item from the given .tsk file
//  It does _not_ create the image itself, a call to CImageItem::Create() must be done
//  to read the image in memory and prepare
//
//  @param szFilename char*: full path and filename to the .TSK file
//
// @return char*: full path and filename to the .png image which represents this image item.
// caller MUST delete it.

wchar_t* CImageItem::Read(const wchar_t *szFilename)
{
	wchar_t buffer[501];
	wchar_t szDrive[MAX_PATH], szPath[MAX_PATH];
	wchar_t	*szFinalName = nullptr;

	GetPrivateProfileString(m_szName, L"Glyph", L"None", buffer, 500, szFilename);
	if (mir_wstrcmp(buffer, L"None")) {
		swscanf(buffer, L"%d,%d,%d,%d", &m_glyphMetrics[0], &m_glyphMetrics[1],
			&m_glyphMetrics[2], &m_glyphMetrics[3]);
		if (m_glyphMetrics[2] > m_glyphMetrics[0] && m_glyphMetrics[3] > m_glyphMetrics[1]) {
			m_dwFlags |= IMAGE_GLYPH;
			m_glyphMetrics[2] = (m_glyphMetrics[2] - m_glyphMetrics[0]) + 1;
			m_glyphMetrics[3] = (m_glyphMetrics[3] - m_glyphMetrics[1]) + 1;
		}
	}

	GetPrivateProfileString(m_szName, L"Image", L"None", buffer, 500, szFilename);
	if (mir_wstrcmp(buffer, L"None") || m_dwFlags & IMAGE_GLYPH) {
		szFinalName = new wchar_t[MAX_PATH];
		_wsplitpath(szFilename, szDrive, szPath, nullptr, nullptr);
		mir_snwprintf(szFinalName, MAX_PATH, L"%s\\%s%s", szDrive, szPath, buffer);
		if (!PathFileExists(szFinalName)) {
			delete[] szFinalName;
			szFinalName = nullptr;
		}
		m_alpha = GetPrivateProfileInt(m_szName, L"Alpha", 100, szFilename);
		m_alpha = min(m_alpha, 100);
		m_alpha = (uint8_t)((FLOAT)(((FLOAT)m_alpha) / 100) * 255);
		m_bf.SourceConstantAlpha = m_alpha;
		m_bLeft = GetPrivateProfileInt(m_szName, L"Left", 0, szFilename);
		m_bRight = GetPrivateProfileInt(m_szName, L"Right", 0, szFilename);
		m_bTop = GetPrivateProfileInt(m_szName, L"Top", 0, szFilename);
		m_bBottom = GetPrivateProfileInt(m_szName, L"Bottom", 0, szFilename);
		if (m_dwFlags & IMAGE_GLYPH) {
			m_width = m_glyphMetrics[2];
			m_height = m_glyphMetrics[3];
			m_inner_height = m_glyphMetrics[3] - m_bTop - m_bBottom;
			m_inner_width = m_glyphMetrics[2] - m_bRight - m_bLeft;

			if (m_bTop && m_bBottom && m_bLeft && m_bRight)
				m_dwFlags |= IMAGE_FLAG_DIVIDED;
			m_bf.BlendFlags = 0;
			m_bf.BlendOp = AC_SRC_OVER;
			m_dwFlags |= IMAGE_PERPIXEL_ALPHA;
			m_bf.AlphaFormat = AC_SRC_ALPHA;
			if (m_inner_height <= 0 || m_inner_width <= 0) {
				if (szFinalName) {
					delete[] szFinalName;
					szFinalName = nullptr;
				}
				return(szFinalName);
			}
		}
		GetPrivateProfileString(m_szName, L"Fillcolor", L"None", buffer, 500, szFilename);
		if (mir_wstrcmp(buffer, L"None")) {
			COLORREF fillColor = CSkin::HexStringToLong(buffer);
			m_fillBrush = CreateSolidBrush(fillColor);
			m_dwFlags |= IMAGE_FILLSOLID;
		}
		else
			m_fillBrush = nullptr;
		GetPrivateProfileString(m_szName, L"Colorkey", L"None", buffer, 500, szFilename);
		if (mir_wstrcmp(buffer, L"None")) {
			CSkin::m_ContainerColorKey = CSkin::HexStringToLong(buffer);
			if (CSkin::m_ContainerColorKeyBrush)
				DeleteObject(CSkin::m_ContainerColorKeyBrush);
			CSkin::m_ContainerColorKeyBrush = CreateSolidBrush(CSkin::m_ContainerColorKey);
		}
		GetPrivateProfileString(m_szName, L"Stretch", L"None", buffer, 500, szFilename);
		if (buffer[0] == 'B' || buffer[0] == 'b')
			m_bStretch = IMAGE_STRETCH_B;
		else if (buffer[0] == 'h' || buffer[0] == 'H')
			m_bStretch = IMAGE_STRETCH_V;
		else if (buffer[0] == 'w' || buffer[0] == 'W')
			m_bStretch = IMAGE_STRETCH_H;
		m_hbm = nullptr;
		if (GetPrivateProfileInt(m_szName, L"Perpixel", 0, szFilename))
			m_dwFlags |= IMAGE_PERPIXEL_ALPHA;

		return(szFinalName);
	}
	return nullptr;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Free all resources allocated by an image item

void CImageItem::Free()
{
	if (m_hdc) {
		::SelectObject(m_hdc, m_hbmOld);
		::DeleteDC(m_hdc);
	}
	if (m_hbm)
		::DeleteObject(m_hbm);

	if (m_fillBrush)
		::DeleteObject(m_fillBrush);

	memset(this, 0, sizeof(CImageItem));
}

/////////////////////////////////////////////////////////////////////////////////////////
// Set the alpha value for a 32bit RGBA bitmap to the given value
//
// @param hBitmap	bitmap handle
// @param bAlpha	new alpha value (0 -> fully transparent, 255 -> opaque)
// 					default value is 255

void CImageItem::SetBitmap32Alpha(HBITMAP hBitmap, uint8_t bAlpha)
{
	BITMAP bmp;
	GetObject(hBitmap, sizeof(bmp), &bmp);
	if (bmp.bmBitsPixel != 32)
		return;

	uint32_t dwLen = bmp.bmWidth * bmp.bmHeight * (bmp.bmBitsPixel / 8);
	uint8_t *p = (uint8_t *)mir_alloc(dwLen);
	if (p == nullptr)
		return;
	memset(p, 0, dwLen);

	GetBitmapBits(hBitmap, dwLen, p);

	for (int y = 0; y < bmp.bmHeight; ++y) {
		uint8_t *px = p + bmp.bmWidth * 4 * y;

		for (int x = 0; x < bmp.bmWidth; ++x) {
			px[3] = bAlpha;
			px += 4;
		}
	}
	SetBitmapBits(hBitmap, bmp.bmWidth * bmp.bmHeight * 4, p);
	mir_free(p);
}

void CImageItem::PreMultiply(HBITMAP hBitmap, int mode)
{
	BITMAP bmp;
	::GetObject(hBitmap, sizeof(bmp), &bmp);

	int width = bmp.bmWidth;
	int height = bmp.bmHeight;
	uint32_t dwLen = width * height * 4;
	uint8_t *p = (uint8_t *)mir_alloc(dwLen);
	if (p) {
		::GetBitmapBits(hBitmap, dwLen, p);
		for (int y = 0; y < height; ++y) {
			uint8_t *px = p + width * 4 * y;

			for (int x = 0; x < width; ++x) {
				if (mode) {
					uint8_t alpha = px[3];
					px[0] = px[0] * alpha / 255;
					px[1] = px[1] * alpha / 255;
					px[2] = px[2] * alpha / 255;
				}
				else px[3] = 255;

				px += 4;
			}
		}
		dwLen = ::SetBitmapBits(hBitmap, dwLen, p);
		mir_free(p);
	}
}

void CImageItem::Colorize(HBITMAP hBitmap, uint8_t dr, uint8_t dg, uint8_t db, uint8_t alpha)
{
	float r = (float)dr / 2.55;
	float g = (float)dg / 2.55;
	float b = (float)db / 2.55;

	BITMAP 	bmp;
	::GetObject(hBitmap, sizeof(bmp), &bmp);

	int width = bmp.bmWidth;
	int height = bmp.bmHeight;
	int dwLen = width * height * 4;
	uint8_t *p = (uint8_t *)mir_alloc(dwLen);
	if (p) {
		::GetBitmapBits(hBitmap, dwLen, p);
		for (int y = 0; y < height; ++y) {
			uint8_t *px = p + width * 4 * y;

			for (int x = 0; x < width; ++x) {
				px[0] = (int)(px[0] + b) > 255 ? 255 : px[0] + b;
				px[1] = (int)(px[1] + g) > 255 ? 255 : px[1] + g;
				px[2] = (int)(px[2] + r) > 255 ? 255 : px[2] + r;
				px[3] += alpha;
				px += 4;
			}
		}
		dwLen = ::SetBitmapBits(hBitmap, dwLen, p);
		mir_free(p);
	}
}

/////////////////////////////////////////////////////////////////////////////////////////
// set filename and load parameters from the database
// called on:
// ) init
// ) manual loading on user's request

void CSkin::setFileName()
{
	DBVARIANT dbv;
	if (0 == db_get_ws(0, SRMSGMOD_T, "ContainerSkin", &dbv)) {
		PathToAbsoluteW(dbv.pwszVal, m_tszFileName, M.getSkinPath());
		db_free(&dbv);
	}
	else
		m_tszFileName[0] = 0;

	m_fLoadOnStartup = M.GetByte("useskin", 0) ? true : false;
}

/////////////////////////////////////////////////////////////////////////////////////////
// initialize the skin object

void CSkin::Init(bool fStartup)
{
	m_ImageItems = nullptr;
	m_SkinItems = ::SkinItems;
	m_fLoadOnStartup = false;
	m_skinEnabled = m_frameSkins = false;
	m_bAvatarBorderType = AVBORDER_NORMAL;
	m_avatarBorderClr = ::GetSysColor(COLOR_3DDKSHADOW);
	m_sideBarContainerBG = ::GetSysColor(COLOR_3DFACE);

	m_SkinItems[ID_EXTBKINFOPANELBG] = _defInfoPanel;

	// read current skin name from db
	m_DisableScrollbars = M.GetByte("disableVScroll", 0) ? true : false;

	setFileName();
	m_aeroEffect = M.GetDword("aerostyle", AERO_EFFECT_MILK);
	if (m_fLoadOnStartup && fStartup)
		Load();
}

/////////////////////////////////////////////////////////////////////////////////////////
// throws a warning to close all message windows before a skin can
// be loaded. user can cancel it
// @return: bool: true if windows were closed (or none was open) -> skin can be loaded

bool CSkin::warnToClose() const
{
	if (::pFirstContainer == nullptr)
		return true;

	if (MessageBox(nullptr,
		TranslateT("All message containers need to close before the skin can be changed\nProceed?"),
		TranslateT("Change skin"), MB_YESNO | MB_ICONQUESTION) != IDYES)
		return false;

	CloseAllContainers();
	return true;
}

/////////////////////////////////////////////////////////////////////////////////////////
// mir_free the aero tab bitmaps
// only called on exit, NOT when a skin is unloaded as these elements
// are always needed (even without a skin)

void CSkin::UnloadAeroTabs()
{
	if (m_tabTop) {
		delete m_tabTop;
		m_tabTop = nullptr;
	}

	if (m_tabBottom) {
		delete m_tabBottom;
		m_tabBottom = nullptr;
	}

	if (m_tabGlowTop) {
		delete m_tabGlowTop;
		m_tabGlowTop = nullptr;
	}

	if (m_tabGlowBottom) {
		delete m_tabGlowBottom;
		m_tabGlowBottom = nullptr;
	}

	if (m_switchBarItem) {
		delete m_switchBarItem;
		m_switchBarItem = nullptr;
	}
}

/////////////////////////////////////////////////////////////////////////////////////////
// Unload the skin.Free everything allocated.
// Called when:
// * user unloads the skin from the dialog box
// * a new skin is loaded by user's request.

void CSkin::Unload()
{
	// do nothing when user decides to not close any window
	if (warnToClose() == false)
		return;

	// delete all image items
	m_skinEnabled = m_frameSkins = false;

	CImageItem *tmp = m_ImageItems, *nextItem;
	while (tmp) {
		nextItem = tmp->getNextItem();
		delete tmp;
		tmp = nextItem;
	}

	m_ImageItems = nullptr;
	m_glyphItem.Free();

	if (m_ContainerColorKeyBrush)
		::DeleteObject(m_ContainerColorKeyBrush);
	if (m_MenuBGBrush)
		::DeleteObject(m_MenuBGBrush);
	if (m_BrushBack)
		::DeleteObject(m_BrushBack);

	m_ContainerColorKeyBrush = m_MenuBGBrush = nullptr;

	if (m_SkinLightShadowPen)
		::DeleteObject(m_SkinLightShadowPen);
	m_SkinLightShadowPen = nullptr;

	if (m_SkinDarkShadowPen)
		::DeleteObject(m_SkinDarkShadowPen);
	m_SkinDarkShadowPen = nullptr;

	if (m_SkinItems) {
		for (int i = 0; i < ID_EXTBK_LAST; i++) {
			m_SkinItems[i].IGNORED = 1;
			m_SkinItems[i].imageItem = nullptr;
		}
		m_SkinItems[ID_EXTBKINFOPANELBG] = _defInfoPanel;
	}

	memset(this, 0, sizeof(CSkin));

	m_SkinItems = ::SkinItems;
	setFileName();

	m_bClipBorder = m_DisableScrollbars = false;
	m_SkinnedFrame_left = m_SkinnedFrame_right = m_SkinnedFrame_bottom = m_SkinnedFrame_caption = 0;
	m_realSkinnedFrame_left = m_realSkinnedFrame_right = m_realSkinnedFrame_bottom = m_realSkinnedFrame_caption = 0;

	m_titleBarLeftOff = m_titleButtonTopOff = m_captionOffset = m_captionPadding =
		m_titleBarRightOff = m_sidebarTopOffset = m_sidebarBottomOffset = m_bRoundedCorner = 0;

	m_titleBarButtonSize.cx = m_titleBarButtonSize.cy = 0;
	m_ContainerColorKey = 0;
	m_ContainerColorKeyBrush = m_MenuBGBrush = nullptr;
	m_skinEnabled = m_frameSkins = false;

	if (m_closeIcon)
		::DestroyIcon(m_closeIcon);
	if (m_maxIcon)
		::DestroyIcon(m_maxIcon);
	if (m_minIcon)
		::DestroyIcon(m_minIcon);

	m_closeIcon = m_maxIcon = m_minIcon = nullptr;

	for (int i = 0; i < m_nrSkinIcons; i++)
		if (m_skinIcons[i].phIcon)
			::DestroyIcon(*(m_skinIcons[i].phIcon));
	mir_free(m_skinIcons);

	if (!Miranda_IsTerminated()) {
		M.getAeroState();				// refresh after unload
		::FreeTabConfig();
		::ReloadTabConfig();
	}

	m_bAvatarBorderType = AVBORDER_NORMAL;
	m_avatarBorderClr = ::GetSysColor(COLOR_3DDKSHADOW);
	m_sideBarContainerBG = ::GetSysColor(COLOR_3DFACE);

	m_DisableScrollbars = M.GetByte("disableVScroll", 0) ? true : false;
}

void CSkin::LoadIcon(const wchar_t *szSection, const wchar_t *name, HICON &hIcon)
{
	if (hIcon != nullptr)
		DestroyIcon(hIcon);

	wchar_t buffer[512];
	GetPrivateProfileString(szSection, name, L"none", buffer, 250, m_tszFileName);
	buffer[500] = 0;

	if (mir_wstrcmpi(buffer, L"none")) {
		wchar_t szDrive[MAX_PATH], szDir[MAX_PATH], szImagePath[MAX_PATH];

		_wsplitpath(m_tszFileName, szDrive, szDir, nullptr, nullptr);
		mir_snwprintf(szImagePath, L"%s\\%s\\%s", szDrive, szDir, buffer);
		hIcon = (HICON)LoadImage(nullptr, szImagePath, IMAGE_ICON, 16, 16, LR_LOADFROMFILE);
	}
	else hIcon = nullptr;
}


/////////////////////////////////////////////////////////////////////////////////////////
// Read a skin item (not a image item - these are handled elsewhere)
// Reads all values from the .ini style .tsk file and fills the
// structure.
//
// @param id     int: zero-based index into the table of predefined skin items
// @param szItem char *: the section name in the ini file which holds the definition for this
//    item.

void CSkin::ReadItem(const int id, const wchar_t *szItem)
{
	wchar_t buffer[512];
	wchar_t def_color[20];
	COLORREF clr;
	CSkinItem *defaults = &StatusItem_Default;

	CSkinItem	*this_item = &m_SkinItems[id];

	this_item->ALPHA = (int)GetPrivateProfileInt(szItem, L"Alpha", defaults->ALPHA, m_tszFileName);
	this_item->ALPHA = min(this_item->ALPHA, 100);

	clr = RGB(GetBValue(defaults->COLOR), GetGValue(defaults->COLOR), GetRValue(defaults->COLOR));
	mir_snwprintf(def_color, L"%6.6x", clr);
	GetPrivateProfileString(szItem, L"Color1", def_color, buffer, 400, m_tszFileName);
	this_item->COLOR = HexStringToLong(buffer);

	clr = RGB(GetBValue(defaults->COLOR2), GetGValue(defaults->COLOR2), GetRValue(defaults->COLOR2));
	mir_snwprintf(def_color, L"%6.6x", clr);
	GetPrivateProfileString(szItem, L"Color2", def_color, buffer, 400, m_tszFileName);
	this_item->COLOR2 = HexStringToLong(buffer);

	this_item->COLOR2_TRANSPARENT = (uint8_t)GetPrivateProfileInt(szItem, L"COLOR2_TRANSPARENT", defaults->COLOR2_TRANSPARENT, m_tszFileName);

	this_item->CORNER = defaults->CORNER & CORNER_ACTIVE ? defaults->CORNER : 0;
	GetPrivateProfileString(szItem, L"Corner", L"None", buffer, 400, m_tszFileName);
	if (wcsstr(buffer, L"tl"))
		this_item->CORNER |= CORNER_TL;
	if (wcsstr(buffer, L"tr"))
		this_item->CORNER |= CORNER_TR;
	if (wcsstr(buffer, L"bl"))
		this_item->CORNER |= CORNER_BL;
	if (wcsstr(buffer, L"br"))
		this_item->CORNER |= CORNER_BR;
	if (this_item->CORNER)
		this_item->CORNER |= CORNER_ACTIVE;

	this_item->GRADIENT = defaults->GRADIENT & GRADIENT_ACTIVE ? defaults->GRADIENT : 0;
	GetPrivateProfileString(szItem, L"Gradient", L"None", buffer, 400, m_tszFileName);
	if (wcsstr(buffer, L"left"))
		this_item->GRADIENT = GRADIENT_RL;
	else if (wcsstr(buffer, L"right"))
		this_item->GRADIENT = GRADIENT_LR;
	else if (wcsstr(buffer, L"up"))
		this_item->GRADIENT = GRADIENT_BT;
	else if (wcsstr(buffer, L"down"))
		this_item->GRADIENT = GRADIENT_TB;
	if (this_item->GRADIENT)
		this_item->GRADIENT |= GRADIENT_ACTIVE;

	this_item->MARGIN_LEFT = GetPrivateProfileInt(szItem, L"Left", defaults->MARGIN_LEFT, m_tszFileName);
	this_item->MARGIN_RIGHT = GetPrivateProfileInt(szItem, L"Right", defaults->MARGIN_RIGHT, m_tszFileName);
	this_item->MARGIN_TOP = GetPrivateProfileInt(szItem, L"Top", defaults->MARGIN_TOP, m_tszFileName);
	this_item->MARGIN_BOTTOM = GetPrivateProfileInt(szItem, L"Bottom", defaults->MARGIN_BOTTOM, m_tszFileName);
	this_item->BORDERSTYLE = GetPrivateProfileInt(szItem, L"Radius", defaults->BORDERSTYLE, m_tszFileName);

	GetPrivateProfileString(szItem, L"Textcolor", L"ffffffff", buffer, 400, m_tszFileName);
	this_item->TEXTCOLOR = HexStringToLong(buffer);
	this_item->IGNORED = 0;
}

/////////////////////////////////////////////////////////////////////////////////////////
// stub to read a single item. Called from CSkin::LoadItems()
// The real work is done by the CImageItem::Read().
//
// @param itemname char *: image item name, also section name in the .tsk file

void CSkin::ReadImageItem(const wchar_t *itemname)
{
	wchar_t buffer[512], szItemNr[30];

	CImageItem tmpItem(itemname);

	wchar_t *szImageFileName = tmpItem.Read(m_tszFileName);

	if (!mir_wstrcmpi(itemname, L"$glyphs") && szImageFileName != nullptr) {		// the glyph item MUST have a valid image
		tmpItem.Create(szImageFileName);
		if (tmpItem.getHbm()) {
			m_glyphItem = tmpItem;
			m_fHaveGlyph = true;
		}
		tmpItem.Clear();
		delete[] szImageFileName;
		return;
	}

	// handle the assignments of image items to skin items
	for (int n = 0;; n++) {
		mir_snwprintf(szItemNr, L"Item%d", n);
		GetPrivateProfileString(itemname, szItemNr, L"None", buffer, 500, m_tszFileName);
		if (!mir_wstrcmp(buffer, L"None"))
			break;
		for (int i = 0; i <= ID_EXTBK_LAST; i++) {
			if (!mir_wstrcmpi(SkinItems[i].szName[0] == '{' ? &SkinItems[i].szName[3] : SkinItems[i].szName, buffer)) {
				if (!(tmpItem.getFlags() & IMAGE_GLYPH)) {
					if (szImageFileName)
						tmpItem.Create(szImageFileName);
					else {
						tmpItem.Clear();
						return; // no reference to the glpyh image and no valid image file name -> invalid item
					}
				}
				if (tmpItem.getHbm() || (tmpItem.getFlags() & IMAGE_GLYPH)) {
					CImageItem *newItem = new CImageItem(tmpItem);
					SkinItems[i].imageItem = newItem;
					if (m_ImageItems == nullptr)
						m_ImageItems = newItem;
					else {
						CImageItem *pItem = m_ImageItems;

						while (pItem->getNextItem() != nullptr)
							pItem = pItem->getNextItem();
						pItem->setNextItem(newItem);
					}
				}
			}
		}
	}
	tmpItem.Clear();
	if (szImageFileName)
		delete[] szImageFileName;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Load the skin from the .tsk file
// It reads and initializes all static values for the skin. Afterwards
// it calls ReadItems() to read additional skin information like image items,
// buttons and icons.

void CSkin::Load(void)
{
	if (warnToClose() == false)
		return;

	if (m_skinEnabled) {
		Unload();
		m_skinEnabled = false;
	}

	m_fHaveGlyph = false;

	if (!m_tszFileName[0] || !::PathFileExists(m_tszFileName))
		return;

	int i = 1, j = 0;
	UINT  data;
	wchar_t buffer[500];

	if (!(GetPrivateProfileInt(L"Global", L"Version", 0, m_tszFileName) >= 1 && GetPrivateProfileInt(L"Global", L"Signature", 0, m_tszFileName) == 101))
		return;

	i = 0;
	while (_tagSettings[i].szIniKey != nullptr) {
		data = GetPrivateProfileInt(_tagSettings[i].szIniKey, _tagSettings[i].szIniName,
			_tagSettings[i].defaultval, m_tszFileName);
		switch (_tagSettings[i].size) {
		case 1:
			db_set_b(0, SRMSGMOD_T, _tagSettings[i].szSetting, (uint8_t)data);
			break;
		case 4:
			db_set_dw(0, SRMSGMOD_T, _tagSettings[i].szSetting, data);
			break;
		case 2:
			db_set_w(0, SRMSGMOD_T, _tagSettings[i].szSetting, (uint16_t)data);
			break;
		case 5:
			GetPrivateProfileString(_tagSettings[i].szIniKey, _tagSettings[i].szIniName, L"000000",
				buffer, 10, m_tszFileName);
			db_set_dw(0, SRMSGMOD_T, _tagSettings[i].szSetting, HexStringToLong(buffer));
			break;
		}
		i++;
	}

	m_DisableScrollbars = M.GetByte("disableVScroll", 0) ? true : false;

	wchar_t *szSections = (wchar_t*)mir_alloc(6004);
	memset(szSections, 0, 6000);
	GetPrivateProfileSectionNames(szSections, 3000, m_tszFileName);
	szSections[3001] = szSections[3000] = 0;
	wchar_t *p = szSections;
	while (mir_wstrlen(p) > 1) {
		if (p[0] != '%') {
			p += (mir_wstrlen(p) + 1);
			continue;
		}
		for (i = 0; i <= ID_EXTBK_LAST; i++) {
			if (!mir_wstrcmpi(&p[1], SkinItems[i].szName[0] == '{' ? &SkinItems[i].szName[3] : SkinItems[i].szName)) {
				ReadItem(i, p);
				break;
			}
		}
		p += (mir_wstrlen(p) + 1);
		j++;
	}

	if (j > 0) {
		m_skinEnabled = true;
		M.getAeroState();		// refresh aero state (set to false when a skin is successfully loaded and active)
	}

	GetPrivateProfileString(L"Avatars", L"BorderColor", L"000000", buffer, 20, m_tszFileName);
	m_avatarBorderClr = (COLORREF)HexStringToLong(buffer);

	GetPrivateProfileString(L"Global", L"SideBarBG", L"None", buffer, 20, m_tszFileName);
	if (mir_wstrcmp(buffer, L"None"))
		m_sideBarContainerBG = (COLORREF)HexStringToLong(buffer);
	else
		m_sideBarContainerBG = SkinItems[ID_EXTBKSIDEBARBG].COLOR;

	m_bAvatarBorderType = GetPrivateProfileInt(L"Avatars", L"BorderType", 1, m_tszFileName);

	LoadIcon(L"Global", L"CloseGlyph", CSkin::m_closeIcon);
	LoadIcon(L"Global", L"MaximizeGlyph", CSkin::m_maxIcon);
	LoadIcon(L"Global", L"MinimizeGlyph", CSkin::m_minIcon);

	m_frameSkins = GetPrivateProfileInt(L"Global", L"framelessmode", 0, m_tszFileName) ? true : false;
	m_DisableScrollbars = GetPrivateProfileInt(L"Global", L"NoScrollbars", 0, m_tszFileName) ? true : false;

	m_SkinnedFrame_left = GetPrivateProfileInt(L"WindowFrame", L"left", 4, m_tszFileName);
	m_SkinnedFrame_right = GetPrivateProfileInt(L"WindowFrame", L"right", 4, m_tszFileName);
	m_SkinnedFrame_caption = GetPrivateProfileInt(L"WindowFrame", L"Caption", 24, m_tszFileName);
	m_SkinnedFrame_bottom = GetPrivateProfileInt(L"WindowFrame", L"bottom", 4, m_tszFileName);

	m_titleBarButtonSize.cx = GetPrivateProfileInt(L"WindowFrame", L"TitleButtonWidth", 24, m_tszFileName);
	m_titleBarButtonSize.cy = GetPrivateProfileInt(L"WindowFrame", L"TitleButtonHeight", 12, m_tszFileName);
	m_titleButtonTopOff = GetPrivateProfileInt(L"WindowFrame", L"TitleButtonTopOffset", 0, m_tszFileName);

	m_titleBarRightOff = GetPrivateProfileInt(L"WindowFrame", L"TitleBarRightOffset", 0, m_tszFileName);
	m_titleBarLeftOff = GetPrivateProfileInt(L"WindowFrame", L"TitleBarLeftOffset", 0, m_tszFileName);

	m_captionOffset = GetPrivateProfileInt(L"WindowFrame", L"CaptionOffset", 3, m_tszFileName);
	m_captionPadding = GetPrivateProfileInt(L"WindowFrame", L"CaptionPadding", 0, m_tszFileName);
	m_sidebarTopOffset = GetPrivateProfileInt(L"ClientArea", L"SidebarTop", -1, m_tszFileName);
	m_sidebarBottomOffset = GetPrivateProfileInt(L"ClientArea", L"SidebarBottom", -1, m_tszFileName);

	m_bClipBorder = GetPrivateProfileInt(L"WindowFrame", L"ClipFrame", 0, m_tszFileName) ? true : false;

	uint8_t radius_tl, radius_tr, radius_bl, radius_br;
	wchar_t 	szFinalName[MAX_PATH];
	wchar_t 	szDrive[MAX_PATH], szPath[MAX_PATH];

	radius_tl = GetPrivateProfileInt(L"WindowFrame", L"RadiusTL", 0, m_tszFileName);
	radius_tr = GetPrivateProfileInt(L"WindowFrame", L"RadiusTR", 0, m_tszFileName);
	radius_bl = GetPrivateProfileInt(L"WindowFrame", L"RadiusBL", 0, m_tszFileName);
	radius_br = GetPrivateProfileInt(L"WindowFrame", L"RadiusBR", 0, m_tszFileName);

	CSkin::m_bRoundedCorner = radius_tl;

	GetPrivateProfileString(L"Theme", L"File", L"None", buffer, MAX_PATH, m_tszFileName);

	_wsplitpath(m_tszFileName, szDrive, szPath, nullptr, nullptr);
	mir_snwprintf(szFinalName, L"%s\\%s\\%s", szDrive, szPath, buffer);
	if (PathFileExists(szFinalName)) {
		ReadThemeFromINI(szFinalName, nullptr, FALSE, m_fLoadOnStartup ? 0 : M.GetByte("skin_loadmode", 0));
		CacheLogFonts();
		CacheMsgLogIcons();
	}

	GetPrivateProfileString(L"Global", L"MenuBarBG", L"None", buffer, 20, m_tszFileName);
	data = HexStringToLong(buffer);
	if (m_MenuBGBrush) {
		DeleteObject(m_MenuBGBrush);
		m_MenuBGBrush = nullptr;
	}
	if (mir_wstrcmp(buffer, L"None"))
		m_MenuBGBrush = CreateSolidBrush(data);

	GetPrivateProfileString(L"Global", L"LightShadow", L"000000", buffer, 20, m_tszFileName);
	data = HexStringToLong(buffer);
	CSkin::m_SkinLightShadowPen = CreatePen(PS_SOLID, 1, RGB(GetRValue(data), GetGValue(data), GetBValue(data)));
	GetPrivateProfileString(L"Global", L"DarkShadow", L"000000", buffer, 20, m_tszFileName);
	data = HexStringToLong(buffer);
	CSkin::m_SkinDarkShadowPen = CreatePen(PS_SOLID, 1, RGB(GetRValue(data), GetGValue(data), GetBValue(data)));

	SkinCalcFrameWidth();

	GetPrivateProfileString(L"Global", L"FontColor", L"None", buffer, 20, m_tszFileName);
	if (mir_wstrcmp(buffer, L"None"))
		CSkin::m_DefaultFontColor = HexStringToLong(buffer);
	else
		CSkin::m_DefaultFontColor = GetSysColor(COLOR_BTNTEXT);
	buffer[499] = 0;
	mir_free(szSections);

	LoadItems();
	::FreeTabConfig();
	::ReloadTabConfig();
}

#define SECT_BUFFER_SIZE 2500

/////////////////////////////////////////////////////////////////////////////////////////
// Load additional skin items (like image items, buttons, icons etc.)
// This is called AFTER ReadItems() has read the basic skin items

void CSkin::LoadItems()
{
	wchar_t *szSections = nullptr;
	wchar_t *p, *p1;
	TIconDesc tmpIconDesc = {};

	if (m_skinIcons == nullptr)
		m_skinIcons = (TIconDescW *)mir_calloc(sizeof(TIconDescW) * NR_MAXSKINICONS);

	m_nrSkinIcons = 0;

	szSections = (wchar_t*)mir_alloc((SECT_BUFFER_SIZE + 2) * sizeof(wchar_t));
	memset(szSections, 0, ((SECT_BUFFER_SIZE + 2) * sizeof(wchar_t)));

	GetPrivateProfileSection(L"Icons", szSections, SECT_BUFFER_SIZE, m_tszFileName);
	szSections[SECT_BUFFER_SIZE] = 0;

	p = szSections;
	while (mir_wstrlen(p) > 1) {
		p1 = wcschr(p, (int)'=');
		if (p1)
			*p1 = 0;
		if (m_nrSkinIcons < NR_MAXSKINICONS && p1) {
			LoadIcon(L"Icons", p, *(HICON*)&tmpIconDesc.uId);
			if (tmpIconDesc.uId) {
				memset(&m_skinIcons[m_nrSkinIcons], 0, sizeof(TIconDesc));
				m_skinIcons[m_nrSkinIcons].uId = tmpIconDesc.uId;
				m_skinIcons[m_nrSkinIcons].phIcon = (HICON *)(&m_skinIcons[m_nrSkinIcons].uId);
				m_skinIcons[m_nrSkinIcons].szName = (wchar_t*)mir_alloc(sizeof(wchar_t) * (mir_wstrlen(p) + 1));
				mir_wstrcpy(m_skinIcons[m_nrSkinIcons].szName, p);
				m_nrSkinIcons++;
			}
		}
		if (p1)
			*p1 = '=';
		p += (mir_wstrlen(p) + 1);
	}

	memset(szSections, 0, ((SECT_BUFFER_SIZE + 2) * sizeof(wchar_t)));
	GetPrivateProfileSectionNames(szSections, SECT_BUFFER_SIZE, m_tszFileName);
	szSections[SECT_BUFFER_SIZE] = 0;

	p = szSections;
	while (mir_wstrlen(p) > 1) {
		if (p[0] == '$')
			ReadImageItem(p);
		p += (mir_wstrlen(p) + 1);
	}
	nextButtonID = IDC_TBFIRSTUID;

	p = szSections;

	mir_free(szSections);
	g_ButtonSet.top = GetPrivateProfileInt(L"ButtonArea", L"top", 0, m_tszFileName);
	g_ButtonSet.bottom = GetPrivateProfileInt(L"ButtonArea", L"bottom", 0, m_tszFileName);
	g_ButtonSet.left = GetPrivateProfileInt(L"ButtonArea", L"left", 0, m_tszFileName);
	g_ButtonSet.right = GetPrivateProfileInt(L"ButtonArea", L"right", 0, m_tszFileName);
}

/////////////////////////////////////////////////////////////////////////////////////////
// setup and cache the bitmap for the close button on tabs and switch bar
// buttons.
// re-created when:
// ) theme changes
// ) icons change (via ico lib service)
//
// @param fDeleteOnly:	only delete GDI resources (this is ONLY used at plugin shutdown)

void CSkin::setupTabCloseBitmap(bool fDeleteOnly)
{
	if (m_tabCloseHDC || fDeleteOnly) {
		if (m_tabCloseHDC) {
			::SelectObject(m_tabCloseHDC, m_tabCloseOldBitmap);
			::DeleteObject(m_tabCloseBitmap);
			::DeleteDC(m_tabCloseHDC);
		}
		if (fDeleteOnly)
			return;
	}

	RECT rc = { 0, 0, 20, 20 };
	HDC  dc = ::GetDC(PluginConfig.g_hwndHotkeyHandler);
	m_tabCloseHDC = ::CreateCompatibleDC(dc);

	if (M.isAero())
		m_tabCloseBitmap = CreateAeroCompatibleBitmap(rc, m_tabCloseHDC);
	else
		m_tabCloseBitmap = ::CreateCompatibleBitmap(dc, 20, 20);

	m_tabCloseOldBitmap = reinterpret_cast<HBITMAP>(::SelectObject(m_tabCloseHDC, m_tabCloseBitmap));

	if (M.isVSThemed() || M.isAero()) {
		::FillRect(m_tabCloseHDC, &rc, M.isAero() ? reinterpret_cast<HBRUSH>(::GetStockObject(BLACK_BRUSH)) : ::GetSysColorBrush(COLOR_3DFACE));

		HANDLE hTheme = OpenThemeData(PluginConfig.g_hwndHotkeyHandler, L"BUTTON");
		rc.left--; rc.right++;
		rc.top--; rc.bottom++;
		DrawThemeParentBackground(PluginConfig.g_hwndHotkeyHandler, m_tabCloseHDC, &rc);
		DrawThemeBackground(hTheme, m_tabCloseHDC, 1, 1, &rc, &rc);
		CloseThemeData(hTheme);
	}
	else if (CSkin::m_skinEnabled)
		CSkin::DrawItem(m_tabCloseHDC, &rc, &SkinItems[ID_EXTBKBUTTONSNPRESSED]);
	else {
		::FillRect(m_tabCloseHDC, &rc, ::GetSysColorBrush(COLOR_3DFACE));
		::DrawFrameControl(m_tabCloseHDC, &rc, DFC_BUTTON, DFCS_BUTTONPUSH | DFCS_MONO);
	}
	::DrawIconEx(m_tabCloseHDC, 2, 2, PluginConfig.g_buttonBarIcons[ICON_BUTTON_CANCEL], 16, 16, 0, nullptr, DI_NORMAL);
	::SelectObject(m_tabCloseHDC, m_tabCloseOldBitmap);

	HBITMAP hbmTemp = ::Image_Resize(m_tabCloseBitmap, RESIZEBITMAP_STRETCH, 16, 16);
	if (hbmTemp != m_tabCloseBitmap) {
		::DeleteObject(m_tabCloseBitmap);
		m_tabCloseBitmap = hbmTemp;
	}
	
	CImageItem::PreMultiply(m_tabCloseBitmap, 1);
	m_tabCloseOldBitmap = reinterpret_cast<HBITMAP>(::SelectObject(m_tabCloseHDC, m_tabCloseBitmap));

	::ReleaseDC(PluginConfig.g_hwndHotkeyHandler, dc);
}

/////////////////////////////////////////////////////////////////////////////////////////
// load and setup some images which are used to draw tabs in aero mode
// there is one image for tabs (it is flipped vertically for bottom tabs)
// and one image for the glowing effect on tabs (also flipped for bottom
// tabs).
//
// support for custom images added 3.0.0.34
// user can place images with a custom_ prefix into the images folder and
// they will be loaded instead the default ones.
//
// the 3rd image acts as background for switch bar buttons
//
// this is executed when:
// ) dwm mode changes
// ) aero effect is changed by the user
// ) glow colorization is changed by user's request

void CSkin::setupAeroSkins()
{
	M.getAeroState();
	UnloadAeroTabs();

	if (!m_fAeroSkinsValid)
		return;

	wchar_t	tszFilename[MAX_PATH], tszBasePath[MAX_PATH];
	wcsncpy_s(tszBasePath, M.getDataPath(), _TRUNCATE);
	if (tszBasePath[mir_wstrlen(tszBasePath) - 1] != '\\')
		mir_wstrcat(tszBasePath, L"\\");

	// load unknown avatar..
	if (nullptr == PluginConfig.g_hbmUnknown) {
		mir_snwprintf(tszFilename, L"%scustom_unknown.png", tszBasePath);
		if (!PathFileExists(tszFilename))
			mir_snwprintf(tszFilename, L"%sunknown.png", tszBasePath);
		PluginConfig.g_hbmUnknown = Bitmap_Load(tszFilename);
		if (PluginConfig.g_hbmUnknown == nullptr) {
			HDC dc = GetDC(nullptr);
			PluginConfig.g_hbmUnknown = CreateCompatibleBitmap(dc, 20, 20);
			ReleaseDC(nullptr, dc);
		}
	}

	mir_snwprintf(tszFilename, L"%scustom_tabskin_aero.png", tszBasePath);
	if (!PathFileExists(tszFilename))
		mir_snwprintf(tszFilename, L"%stabskin_aero.png", tszBasePath);

	BOOL isOpaque = false;
	if (CMimAPI::m_pfnDwmGetColorizationColor && M.isAero())
		CMimAPI::m_pfnDwmGetColorizationColor(&m_dwmColor, &isOpaque);
	else
		m_dwmColor = PluginConfig.m_fillColor;

	float fr = (float)((m_dwmColor & 0x00ff0000) >> 16);
	float fg = (float)((m_dwmColor & 0x0000ff00) >> 8);
	float fb = (float)((m_dwmColor & 0x000000ff));
	uint8_t alphafactor = 255 - ((m_dwmColor & 0xff000000) >> 24);

	/*
	 * a bit tricky, because for low alpha settings (high DWM transparency), the dwm
	 * color is almost dark gray, so we need to intensify the strongest color a bit more than
	 * the others. This will give us a good match for the dwm color that can be used
	 * to render non transparent stuff (i.e. the tool bar).
	 *
	 * TODO: this isn't perfect yet, for some colors, the result is a bit off...
	 */

	if (!isOpaque && alphafactor > 150 && !(fr == fg && fg == fb)) {
		float fmax = max(max(fr, fg), fb);

		if (fmax == fr) {
			fr *= (alphafactor / 100.0 * 2.2);
			fr = min(fr, 255);
			fb = min(fb * alphafactor / 100, 255);
			fg = min(fg * alphafactor / 100, 255);
		}
		else if (fmax == fg) {
			fg *= (alphafactor / 100.0 * 2.2);
			fg = min(fg, 255);
			fr = min(fr * alphafactor / 100, 255);
			fb = min(fb * alphafactor / 100, 255);
		}
		else {
			fb *= (alphafactor / 100.0 * 2.2);
			fb = min(fb, 255);
			fr = min(fr * alphafactor / 100, 255);
			fg = min(fg * alphafactor / 100, 255);
		}
	}

	m_dwmColorRGB = RGB((uint8_t)fr, (uint8_t)fg, (uint8_t)fb);

	FIBITMAP *fib = (FIBITMAP *)Image_Load(tszFilename, IMGL_RETURNDIB);

	HBITMAP hbm = FreeImage_CreateHBITMAPFromDIB(fib);

	CImageItem::Colorize(hbm, GetRValue(m_dwmColorRGB),
		GetGValue(m_dwmColorRGB),
		GetBValue(m_dwmColorRGB));

	CImageItem::PreMultiply(hbm, 1);

	BITMAP bm;
	GetObject(hbm, sizeof(bm), &bm);
	m_tabTop = new CImageItem(4, 4, 4, 4, nullptr, hbm, IMAGE_FLAG_DIVIDED | IMAGE_PERPIXEL_ALPHA,
		nullptr, 255, 30, 80, 50, 100);

	m_tabTop->setAlphaFormat(AC_SRC_ALPHA, 255);
	m_tabTop->setMetrics(bm.bmWidth, bm.bmHeight);

	// created inverted bitmap for bottom tabs
	FreeImage_FlipVertical(fib);

	hbm = FreeImage_CreateHBITMAPFromDIB(fib);

	CImageItem::Colorize(hbm, GetRValue(m_dwmColorRGB),
		GetGValue(m_dwmColorRGB),
		GetBValue(m_dwmColorRGB));

	CImageItem::PreMultiply(hbm, 1);
	FreeImage_Unload(fib);

	GetObject(hbm, sizeof(bm), &bm);
	m_tabBottom = new CImageItem(4, 4, 4, 4, nullptr, hbm, IMAGE_FLAG_DIVIDED | IMAGE_PERPIXEL_ALPHA,
		nullptr, 255, 30, 80, 50, 100);

	m_tabBottom->setAlphaFormat(AC_SRC_ALPHA, 255);
	m_tabBottom->setMetrics(bm.bmWidth, bm.bmHeight);


	mir_snwprintf(tszFilename, L"%scustom_tabskin_aero_glow.png", tszBasePath);
	if (!PathFileExists(tszFilename))
		mir_snwprintf(tszFilename, L"%stabskin_aero_glow.png", tszBasePath);

	fib = (FIBITMAP *)Image_Load(tszFilename, IMGL_RETURNDIB);

	COLORREF glowColor = db_get_dw(0, FONTMODULE, "aeroGlow", RGB(40, 40, 255));
	hbm = FreeImage_CreateHBITMAPFromDIB(fib);
	CImageItem::Colorize(hbm, GetRValue(glowColor), GetGValue(glowColor), GetBValue(glowColor));
	CImageItem::PreMultiply(hbm, 1);

	GetObject(hbm, sizeof(bm), &bm);
	m_tabGlowTop = new CImageItem(4, 4, 4, 4, nullptr, hbm, IMAGE_FLAG_DIVIDED | IMAGE_PERPIXEL_ALPHA,
		nullptr, 255, 30, 80, 50, 100);

	m_tabGlowTop->setAlphaFormat(AC_SRC_ALPHA, 255);
	m_tabGlowTop->setMetrics(bm.bmWidth, bm.bmHeight);

	FreeImage_FlipVertical(fib);

	hbm = FreeImage_CreateHBITMAPFromDIB(fib);
	CImageItem::Colorize(hbm, GetRValue(glowColor), GetGValue(glowColor), GetBValue(glowColor));
	CImageItem::PreMultiply(hbm, 1);
	FreeImage_Unload(fib);

	GetObject(hbm, sizeof(bm), &bm);
	m_tabGlowBottom = new CImageItem(4, 4, 4, 4, nullptr, hbm, IMAGE_FLAG_DIVIDED | IMAGE_PERPIXEL_ALPHA,
		nullptr, 255, 30, 80, 50, 100);

	m_tabGlowBottom->setAlphaFormat(AC_SRC_ALPHA, 255);
	m_tabGlowBottom->setMetrics(bm.bmWidth, bm.bmHeight);

	// background item for the button switch bar
	mir_snwprintf(tszFilename, L"%scustom_tabskin_aero_button.png", tszBasePath);
	if (!PathFileExists(tszFilename))
		mir_snwprintf(tszFilename, L"%stabskin_aero_button.png", tszBasePath);

	hbm = Bitmap_Load(tszFilename);

	CImageItem::Colorize(hbm, GetRValue(m_dwmColorRGB),
		GetGValue(m_dwmColorRGB),
		GetBValue(m_dwmColorRGB));

	CImageItem::PreMultiply(hbm, 1);

	GetObject(hbm, sizeof(bm), &bm);

	m_switchBarItem = new CImageItem(4, 4, 4, 4, nullptr, hbm, IMAGE_FLAG_DIVIDED | IMAGE_PERPIXEL_ALPHA,
		nullptr, 255, 2, 12, 10, 20);

	m_switchBarItem->setAlphaFormat(AC_SRC_ALPHA, 255);
	m_switchBarItem->setMetrics(bm.bmWidth, bm.bmHeight);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Calculate window frame borders for a skin with the ability to paint the window frame.
// Uses system metrics to determine predefined window borders and caption bar size.

void CSkin::SkinCalcFrameWidth()
{
	int xBorder = GetSystemMetrics(SM_CXSIZEFRAME);
	int yBorder = GetSystemMetrics(SM_CYSIZEFRAME);
	int yCaption = GetSystemMetrics(SM_CYCAPTION);

	m_realSkinnedFrame_left = m_SkinnedFrame_left - xBorder;
	m_realSkinnedFrame_right = m_SkinnedFrame_right - xBorder;
	m_realSkinnedFrame_bottom = m_SkinnedFrame_bottom - yBorder;
	m_realSkinnedFrame_caption = m_SkinnedFrame_caption - yCaption;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Draws part of the background to the foreground control
//
// @param hwndClient HWND: target window
// @param hwnd       HWND: source window (usually the parent, needed for transforming client coordinates
// @param pContainer ContainerWindowData *: needed to access the cached DC of the container window
// @param rcClient   RECT *: client rectangle (target area)
// @param hdcTarget  HDC: device context of the target window

void CSkin::SkinDrawBG(HWND hwndClient, HWND hwnd, TContainerData *pContainer, RECT *rcClient, HDC hdcTarget)
{
	RECT rcWindow;
	POINT pt;
	LONG width = rcClient->right - rcClient->left;
	LONG height = rcClient->bottom - rcClient->top;
	HDC dc;

	::GetWindowRect(hwndClient, &rcWindow);
	pt.x = rcWindow.left + rcClient->left;
	pt.y = rcWindow.top + rcClient->top;
	::ScreenToClient(hwnd, &pt);
	if (pContainer)
		dc = pContainer->m_cachedDC;
	else
		dc = ::GetDC(hwnd);
	pt.y = max(pt.y, 0);
	::BitBlt(hdcTarget, rcClient->left, rcClient->top, width, height, dc, pt.x, pt.y, SRCCOPY);
	if (!pContainer)
		::ReleaseDC(hwnd, dc);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Draws part of the background to the foreground control
// same as above, but can use any source DC, not just the
// container
//
// @param hwndClient HWND: target window
// @param hwnd       HWND: source window (usually the parent, needed for transforming client coordinates
// @param pContainer ContainerWindowData *: needed to access the cached DC of the container window
// @param rcClient   RECT *: client rectangle (target area)
// @param hdcTarget  HDC: device context of the target window

void CSkin::SkinDrawBGFromDC(HWND hwndClient, HWND hwnd, RECT *rcClient, HDC hdcTarget)
{
	RECT rcWindow;
	POINT pt;
	LONG width = rcClient->right - rcClient->left;
	LONG height = rcClient->bottom - rcClient->top;
	HDC	 hdcSrc = ::GetDC(hwnd);

	::GetWindowRect(hwndClient, &rcWindow);
	pt.x = rcWindow.left + rcClient->left;
	pt.y = rcWindow.top + rcClient->top;
	::ScreenToClient(hwnd, &pt);
	::StretchBlt(hdcTarget, rcClient->left, rcClient->top, width, height, hdcSrc, pt.x, pt.y, width, height, SRCCOPY | CAPTUREBLT);
	::ReleaseDC(hwnd, hdcSrc);
}

/////////////////////////////////////////////////////////////////////////////////////////
// draw an icon "Dimmed" (small amount of transparency applied)

void CSkin::DrawDimmedIcon(HDC hdc, LONG left, LONG top, LONG dx, LONG dy, HICON hIcon, uint8_t alpha)
{
	HDC dcMem = ::CreateCompatibleDC(hdc);
	HBITMAP hbm = ::CreateCompatibleBitmap(hdc, dx, dy), hbmOld = nullptr;

	hbmOld = reinterpret_cast<HBITMAP>(::SelectObject(dcMem, hbm));
	::DrawIconEx(dcMem, 0, 0, hIcon, dx, dy, 0, nullptr, DI_NORMAL);
	m_default_bf.SourceConstantAlpha = alpha;
	hbm = (HBITMAP)SelectObject(dcMem, hbmOld);
	CImageItem::PreMultiply(hbm, 1);						// for AlphaBlend()...
	hbmOld = reinterpret_cast<HBITMAP>(::SelectObject(dcMem, hbm));
	GdiAlphaBlend(hdc, left, top, dx, dy, dcMem, 0, 0, dx, dy, m_default_bf);
	m_default_bf.SourceConstantAlpha = 255;
	SelectObject(dcMem, hbmOld);
	DeleteObject(hbm);
	DeleteDC(dcMem);
}

UINT CSkin::NcCalcRichEditFrame(HWND hwnd, const CMsgDialog *mwdat, UINT skinID, UINT msg, WPARAM wParam, LPARAM lParam, WNDPROC MyWndProc)
{
	NCCALCSIZE_PARAMS *nccp = (NCCALCSIZE_PARAMS *)lParam;
	BOOL bReturn = FALSE;

	if (CSkin::m_DisableScrollbars) {
		SetWindowLongPtr(hwnd, GWL_STYLE, GetWindowLongPtr(hwnd, GWL_STYLE) & ~WS_VSCROLL);
		EnableScrollBar(hwnd, SB_VERT, ESB_DISABLE_BOTH);
		ShowScrollBar(hwnd, SB_VERT, FALSE);
	}

	LRESULT orig = mir_callNextSubclass(hwnd, MyWndProc, msg, wParam, lParam);
	if (mwdat == nullptr)
		return orig;

	if (CSkin::m_skinEnabled) {
		CSkinItem *item = &SkinItems[skinID];
		if (!item->IGNORED)
			return WVR_REDRAW;
	}
	if (mwdat->m_hTheme && wParam) {
		RECT rcClient;
		HDC hdc = GetDC(GetParent(hwnd));

		if (GetThemeBackgroundContentRect(mwdat->m_hTheme, hdc, 1, 1, &nccp->rgrc[0], &rcClient) == S_OK) {
			if (EqualRect(&rcClient, &nccp->rgrc[0]))
				InflateRect(&rcClient, -1, -1);
			CopyRect(&nccp->rgrc[0], &rcClient);
			bReturn = TRUE;
		}
		ReleaseDC(GetParent(hwnd), hdc);
		return (bReturn) ? WVR_REDRAW : orig;
	}
	if ((mwdat->m_sendMode & SMODE_MULTIPLE || mwdat->m_sendMode & SMODE_CONTAINER ||
		mwdat->m_bEditNotesActive || mwdat->m_sendMode & SMODE_SENDLATER) && skinID == ID_EXTBKINPUTAREA) {
		InflateRect(&nccp->rgrc[0], -1, -1);
		return WVR_REDRAW;
	}
	return orig;
}

/////////////////////////////////////////////////////////////////////////////////////////
// process WM_NCPAINT for the rich edit control. Draws a visual style border and avoid
// classic static edge / client edge may also draw a colorized border around the control

UINT CSkin::DrawRichEditFrame(HWND hwnd, const CMsgDialog *mwdat, UINT skinID, UINT msg, WPARAM wParam, LPARAM lParam, WNDPROC OldWndProc)
{
	// do default processing (otherwise, NO scrollbar as it is painted in NC_PAINT)
	LRESULT result = (OldWndProc == nullptr) ? 0 : mir_callNextSubclass(hwnd, OldWndProc, msg, wParam, lParam);
	if (mwdat == nullptr)
		return result;

	BOOL isEditNotesReason = ((mwdat->m_bEditNotesActive) && (skinID == ID_EXTBKINPUTAREA));
	BOOL isSendLaterReason = ((mwdat->m_sendMode & SMODE_SENDLATER) && (skinID == ID_EXTBKINPUTAREA));
	BOOL isMultipleReason = ((skinID == ID_EXTBKINPUTAREA) && (mwdat->m_sendMode & SMODE_MULTIPLE || mwdat->m_sendMode & SMODE_CONTAINER));

	HDC hdc = GetWindowDC(hwnd);
	RECT rcWindow;
	POINT pt;
	LONG left_off, top_off, right_off, bottom_off;
	LONG dwStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
	LONG dwExStyle = GetWindowLongPtr(hwnd, GWL_EXSTYLE);

	GetWindowRect(hwnd, &rcWindow);
	pt.x = pt.y = 0;
	ClientToScreen(hwnd, &pt);
	left_off = pt.x - rcWindow.left;
	if (dwStyle & WS_VSCROLL && dwExStyle & WS_EX_RTLREADING)
		left_off -= PluginConfig.m_ncm.iScrollWidth;
	top_off = pt.y - rcWindow.top;

	CSkinItem *item = &SkinItems[skinID];
	if (CSkin::m_skinEnabled && !item->IGNORED) {
		right_off = item->MARGIN_RIGHT;
		bottom_off = item->MARGIN_BOTTOM;
	}
	else {
		right_off = left_off;
		bottom_off = top_off;
	}

	rcWindow.right -= rcWindow.left;
	rcWindow.bottom -= rcWindow.top;
	rcWindow.left = rcWindow.top = 0;

	ExcludeClipRect(hdc, left_off, top_off, rcWindow.right - right_off, rcWindow.bottom - bottom_off);
	if (CSkin::m_skinEnabled && !item->IGNORED) {
		ReleaseDC(hwnd, hdc);
		return result;
	}
	if (isMultipleReason || isEditNotesReason || isSendLaterReason) {
		HBRUSH br = CreateSolidBrush(isMultipleReason ? RGB(255, 130, 130) : (isEditNotesReason ? RGB(80, 255, 80) : RGB(80, 80, 255)));
		FillRect(hdc, &rcWindow, br);
		DeleteObject(br);
	}
	else {
		if (PluginConfig.m_cRichBorders) {
			HBRUSH br = CreateSolidBrush(PluginConfig.m_cRichBorders);
			FillRect(hdc, &rcWindow, br);
			DeleteObject(br);
		}
		else DrawThemeBackground(mwdat->m_hTheme, hdc, 1, 1, &rcWindow, &rcWindow);
	}
	ReleaseDC(hwnd, hdc);
	return result;
}

/////////////////////////////////////////////////////////////////////////////////////////
// convert a html-style color string (without the #) to a 32bit COLORREF value
//
// @param szSource wchar_t*: the color value as string. format:
//  			   html-style without the leading #. e.g.
//  			   "f3e355"
//
// @return COLORREF representation of the string value.

uint32_t CSkin::HexStringToLong(const wchar_t *szSource)
{
	wchar_t *stopped;
	COLORREF clr = wcstol(szSource, &stopped, 16);
	if (clr == -1)
		return clr;
	return(RGB(GetBValue(clr), GetGValue(clr), GetRValue(clr)));
}

/////////////////////////////////////////////////////////////////////////////////////////
// Render text to the given HDC. This function is aero aware and will use uxtheme DrawThemeTextEx() when needed.
// Paramaters are pretty much comparable to GDI DrawText() API

int CSkin::RenderText(HDC hdc, HANDLE hTheme, const wchar_t *szText, RECT *rc, uint32_t dtFlags, const int iGlowSize, COLORREF clr, bool fForceAero)
{
	if ((IsWinVerVistaPlus() && !CSkin::m_skinEnabled && hTheme) || fForceAero) {
		DTTOPTS dto = { 0 };
		dto.dwSize = sizeof(dto);
		if (iGlowSize && (M.isAero() || fForceAero)) {
			dto.iGlowSize = iGlowSize;
			dto.dwFlags = DTT_COMPOSITED | DTT_GLOWSIZE;
		}
		else {
			dto.dwFlags = DTT_TEXTCOLOR | DTT_COMPOSITED;//|DTT_SHADOWTYPE|DTT_SHADOWOFFSET|DTT_SHADOWCOLOR|DTT_BORDERSIZE|DTT_BORDERCOLOR;
			dto.crText = clr;
		}
		dto.iBorderSize = 10;
		return(CMimAPI::m_pfnDrawThemeTextEx(hTheme, hdc, BP_PUSHBUTTON, PBS_NORMAL, szText, -1, dtFlags, rc, &dto));
	}

	::SetTextColor(hdc, clr);
	return(::DrawText(hdc, szText, -1, rc, dtFlags));
}

/////////////////////////////////////////////////////////////////////////////////////////
// Draw the given skin item to the target rectangle and dc
//
// @param hdc    HDC: device context
// @param rc     RECT: target rectangle
// @param item   CSkinItem*: fully initialiized skin item
//
// @return bool: true if the item has been painted, false if not
//  	   (only reason: the ignore flag in the item is set).

bool CSkin::DrawItem(const HDC hdc, const RECT *rc, const CSkinItem *item)
{
	if (!item->IGNORED) {
		::DrawAlpha(hdc, const_cast<RECT *>(rc), item->COLOR, item->ALPHA, item->COLOR2, item->COLOR2_TRANSPARENT,
			item->GRADIENT, item->CORNER, item->BORDERSTYLE, item->imageItem);
		return true;
	}
	return false;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Create a 32bit RGBA bitmap, compatible for rendering with alpha channel.
// Required by anything which would render on a transparent aero surface.
// the image is a "bottom up" bitmap, as it has a negative
// height. This is a requirement for some UxTheme APIs (e.g.
// DrawThemeTextEx).
//
// @param rc     RECT &: the rectangle describing the target area.
// @param dc     The device context for which the bitmap should be created.
//
// @return HBITMAP: handle to the bitmap created.

HBITMAP CSkin::CreateAeroCompatibleBitmap(const RECT &rc, HDC dc)
{
	BITMAPINFO dib = { 0 };

	dib.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	dib.bmiHeader.biWidth = rc.right - rc.left;
	dib.bmiHeader.biHeight = -(rc.bottom - rc.top);
	dib.bmiHeader.biPlanes = 1;
	dib.bmiHeader.biBitCount = 32;
	dib.bmiHeader.biCompression = BI_RGB;

	return CreateDIBSection(dc, &dib, DIB_RGB_COLORS, nullptr, nullptr, 0);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Map a given rectangle within the window, specified by hwndClient
// to the client area of another window.
//
// @param hwndClient HWND: Client window
// @param hwndParent HWND: The window to which the coordinates should be mapped
// @param rc         RECT &: Rectangular area within the client area of hwndClient.
//
//It will receive the transformed coordinates, relative to the client area of hwndParent

void CSkin::MapClientToParent(HWND hwndClient, HWND hwndParent, RECT &rc)
{
	POINT pt;

	LONG  cx = rc.right - rc.left;
	LONG  cy = rc.bottom - rc.top;
	pt.x = rc.left; pt.y = rc.top;

	::ClientToScreen(hwndClient, &pt);
	::ScreenToClient(hwndParent, &pt);

	rc.top = pt.y;
	rc.left = pt.x;
	rc.right = rc.left + cx;
	rc.bottom = rc.top + cy;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Draw the background for the message window tool bar
//
// @param dat      _MessageWindowData *: structure describing the message session
//
// @param hdc      HDC: handle to the device context in which painting should occur.
// @param rcWindow RECT &: The window rectangle of the message dialog window

void CMsgDialog::RenderToolbarBG(HDC hdc, const RECT &rcWindow) const
{
	if (m_pContainer->cfg.flags.m_bHideToolbar)
		return;

	bool	 bAero = M.isAero();
	bool	 fTbColorsValid = PluginConfig.m_tbBackgroundHigh && PluginConfig.m_tbBackgroundLow;
	uint8_t	 bAlphaOffset = 0;
	BOOL 	fMustDrawNonThemed = ((bAero || fTbColorsValid) && !db_get_b(0, SRMSGMOD_T, "forceThemedToolbar", 0));
	RECT 	rc, rcToolbar;
	POINT	pt;

	if (!m_pContainer->cfg.flags.m_bBottomToolbar) {
		::GetWindowRect(m_pLog->GetHwnd(), &rc);
		pt.y = rc.bottom + 0;
		::ScreenToClient(m_hwnd, &pt);
		rcToolbar.top = pt.y;
		rcToolbar.left = 0;
		rcToolbar.right = rcWindow.right;

		if (!isChat()) {
			if (m_bErrorState)
				rcToolbar.top += ERRORPANEL_HEIGHT;
			if (m_bScrollingDisabled || m_bNotOnList) {
				rcToolbar.top += 20;
				RECT	rcAdd;
				rcAdd.left = 0; rcAdd.right = rcToolbar.right - rcToolbar.left;
				rcAdd.bottom = rcToolbar.top - 1;
				rcAdd.top = rcAdd.bottom - 20;
				::DrawEdge(hdc, &rcAdd, BDR_RAISEDINNER | BDR_RAISEDOUTER, BF_RECT | BF_SOFT | BF_FLAT);
			}
		}

		::GetWindowRect(m_message.GetHwnd(), &rc);
		pt.y = rc.top - (m_bIsAutosizingInput ? 1 : 2);
		::ScreenToClient(m_hwnd, &pt);
		rcToolbar.bottom = pt.y;
	}
	else {
		GetWindowRect(m_message.GetHwnd(), &rc);
		pt.y = rc.bottom - 2;
		ScreenToClient(m_hwnd, &pt);
		rcToolbar.top = pt.y + 1;
		rcToolbar.left = 0;
		rcToolbar.right = rcWindow.right;
		rcToolbar.bottom = rcWindow.bottom;
	}
	LONG cx = rcToolbar.right - rcToolbar.left;
	LONG cy = rcToolbar.bottom - rcToolbar.top;

	RECT rcCachedToolbar = { 0 };
	rcCachedToolbar.right = cx;
	rcCachedToolbar.bottom = cy;

	if (m_pContainer->m_cachedToolbarDC == nullptr)
		m_pContainer->m_cachedToolbarDC = ::CreateCompatibleDC(hdc);

	if (m_pContainer->m_szOldToolbarSize.cx != cx || m_pContainer->m_szOldToolbarSize.cy != cy) {
		if (m_pContainer->m_oldhbmToolbarBG) {
			::SelectObject(m_pContainer->m_cachedToolbarDC, m_pContainer->m_oldhbmToolbarBG);
			::DeleteObject(m_pContainer->m_hbmToolbarBG);
		}
		m_pContainer->m_hbmToolbarBG = CSkin::CreateAeroCompatibleBitmap(rcCachedToolbar, hdc);// ::CreateCompatibleBitmap(hdc, cx, cy);
		m_pContainer->m_oldhbmToolbarBG = reinterpret_cast<HBITMAP>(::SelectObject(m_pContainer->m_cachedToolbarDC, m_pContainer->m_hbmToolbarBG));
	}
	m_pContainer->m_szOldToolbarSize.cx = cx;
	m_pContainer->m_szOldToolbarSize.cy = cy;

	if (!fMustDrawNonThemed && M.isVSThemed()) {
		DrawThemeBackground(m_hThemeToolbar, m_pContainer->m_cachedToolbarDC, 6, 1, &rcCachedToolbar, &rcCachedToolbar);
		m_pContainer->m_bTBRenderingMode = 1;				// tell TSButton how to render the tool bar buttons
	}
	else {
		m_pContainer->m_bTBRenderingMode = (M.isVSThemed() ? 1 : 0);
		CSkin::m_tmp_tb_high = PluginConfig.m_tbBackgroundHigh ? PluginConfig.m_tbBackgroundHigh :
			((bAero && CSkin::m_pCurrentAeroEffect) ? CSkin::m_pCurrentAeroEffect->m_clrToolbar : ::GetSysColor(COLOR_3DFACE));
		CSkin::m_tmp_tb_low = PluginConfig.m_tbBackgroundLow ? PluginConfig.m_tbBackgroundLow :
			((bAero && CSkin::m_pCurrentAeroEffect) ? CSkin::m_pCurrentAeroEffect->m_clrToolbar2 : ::GetSysColor(COLOR_3DFACE));

		bAlphaOffset = PluginConfig.m_tbBackgroundHigh ? 40 : 0;
		::DrawAlpha(m_pContainer->m_cachedToolbarDC, &rcCachedToolbar, CSkin::m_tmp_tb_high, 55 + bAlphaOffset, CSkin::m_tmp_tb_low, 0, 9, 0, 0, nullptr);
	}

	::BitBlt(hdc, rcToolbar.left, rcToolbar.top, cx, cy, m_pContainer->m_cachedToolbarDC, 0, 0, SRCCOPY);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Initiate a buffered paint operation
//
// @param hdcSrc The source device context (usually obtained by BeginPaint())
// @param rc     RECT&: the target rectangle that receives the painting
// @param hdcOut HDC& (out) receives the buffered device context handle

HANDLE CSkin::InitiateBufferedPaint(const HDC hdcSrc, RECT& rc, HDC& hdcOut)
{
	return CMimAPI::m_pfnBeginBufferedPaint(hdcSrc, &rc, BPBF_TOPDOWNDIB, nullptr, &hdcOut);
}

/////////////////////////////////////////////////////////////////////////////////////////
// finalize buffered paint cycle and apply (if applicable) the global alpha value
//
// @param hbp    HANDLE: handle of the buffered paint context
// @param rc     RECT*: target rectangly where alpha value should be applied

void CSkin::FinalizeBufferedPaint(HANDLE hbp, RECT *rc)
{
	if (m_pCurrentAeroEffect && m_pCurrentAeroEffect->m_finalAlpha > 0)
		CMimAPI::m_pfnBufferedPaintSetAlpha(hbp, rc, m_pCurrentAeroEffect->m_finalAlpha);
	CMimAPI::m_pfnEndBufferedPaint(hbp, TRUE);
}

/////////////////////////////////////////////////////////////////////////////////////////
// Apply an effect to a aero glass area
//
// @param hdc    HDC: device context
// @param rc     RECT*: target rectangle
// @param iEffectArea
//  			 int: area identifier (specifies which area we are drawing, so that allows to
//  			 have different effects on different areas).
//  			 Area can be the status bar, info panel, menu
//  			 bar etc.
// @param hbp    HANDLE: handle to a buffered paint identifier.
//  			 default is none, needed forsome special
//  			 effects. default paramenter is 0

void CSkin::ApplyAeroEffect(const HDC hdc, const RECT *rc, int iEffectArea)
{
	if (m_pCurrentAeroEffect == nullptr || m_aeroEffect == AERO_EFFECT_NONE)
		return;

	if (m_pCurrentAeroEffect->pfnEffectRenderer)
		m_pCurrentAeroEffect->pfnEffectRenderer(hdc, rc, iEffectArea);
}

/////////////////////////////////////////////////////////////////////////////////////////
// aero effect callbacks

void CSkin::AeroEffectCallback_Milk(const HDC hdc, const RECT *rc, int iEffectArea)
{
	if (iEffectArea < 0x1000) {
		int 	alpha = (iEffectArea == AERO_EFFECT_AREA_INFOPANEL) ? m_pCurrentAeroEffect->m_baseAlpha : 40;
		if (iEffectArea == AERO_EFFECT_AREA_MENUBAR)
			alpha = 90;
		uint8_t 	color2_trans = (iEffectArea == AERO_EFFECT_AREA_MENUBAR) ? 0 : 1;
		uint32_t   corner = (iEffectArea == AERO_EFFECT_AREA_INFOPANEL) ? m_pCurrentAeroEffect->m_cornerRadius : 6;

		DrawAlpha(hdc, const_cast<RECT *>(rc), m_pCurrentAeroEffect->m_baseColor, alpha, m_pCurrentAeroEffect->m_gradientColor,
			color2_trans, m_pCurrentAeroEffect->m_gradientType, m_pCurrentAeroEffect->m_cornerType, corner, nullptr);
	}
}

void CSkin::AeroEffectCallback_Carbon(const HDC hdc, const RECT *rc, int iEffectArea)
{
	if (iEffectArea < 0x1000)
		DrawAlpha(hdc, const_cast<RECT *>(rc), m_pCurrentAeroEffect->m_baseColor, m_pCurrentAeroEffect->m_baseAlpha,
		m_pCurrentAeroEffect->m_gradientColor, 0, m_pCurrentAeroEffect->m_gradientType,
		m_pCurrentAeroEffect->m_cornerType, m_pCurrentAeroEffect->m_cornerRadius, nullptr);
}

void CSkin::AeroEffectCallback_Solid(const HDC hdc, const RECT *rc, int iEffectArea)
{
	if (iEffectArea < 0x1000) {
		if (iEffectArea == AERO_EFFECT_AREA_SIDEBAR_LEFT)
			::DrawAlpha(hdc, const_cast<RECT *>(rc), m_pCurrentAeroEffect->m_baseColor, m_pCurrentAeroEffect->m_baseAlpha,
			m_pCurrentAeroEffect->m_gradientColor, 0, GRADIENT_TB + 1,
			0, 2, nullptr);
		else
			::DrawAlpha(hdc, const_cast<RECT *>(rc), m_pCurrentAeroEffect->m_baseColor, m_pCurrentAeroEffect->m_baseAlpha,
			m_pCurrentAeroEffect->m_gradientColor, 0, m_pCurrentAeroEffect->m_gradientType,
			m_pCurrentAeroEffect->m_cornerType, m_pCurrentAeroEffect->m_cornerRadius, nullptr);
	}
	else {
		uint8_t	bGradient = (iEffectArea & AERO_EFFECT_AREA_TAB_BOTTOM ? GRADIENT_BT : GRADIENT_TB) + 1;
		::DrawAlpha(hdc, const_cast<RECT *>(rc), m_pCurrentAeroEffect->m_baseColor, 70,
			m_pCurrentAeroEffect->m_gradientColor, 1, bGradient,
			m_pCurrentAeroEffect->m_cornerType, m_pCurrentAeroEffect->m_cornerRadius, nullptr);
	}
}

void CSkin::initAeroEffect()
{
	if (m_BrushBack) {
		::DeleteObject(m_BrushBack);
		m_BrushBack = nullptr;
	}
	if (IsWinVerVistaPlus() && m_aeroEffect > AERO_EFFECT_NONE && m_aeroEffect < AERO_EFFECT_LAST) {
		m_currentAeroEffect = m_aeroEffects[m_aeroEffect];
		m_pCurrentAeroEffect = &m_currentAeroEffect;
		m_glowSize = m_pCurrentAeroEffect->m_glowSize;

		if (m_pCurrentAeroEffect->m_clrToolbar == -1)
			m_pCurrentAeroEffect->m_clrToolbar = PluginConfig.m_ipBackgroundGradientHigh;

		if (m_pCurrentAeroEffect->m_clrToolbar2 == -1)
			m_pCurrentAeroEffect->m_clrToolbar2 = PluginConfig.m_ipBackgroundGradient;
		else if (m_pCurrentAeroEffect->m_clrToolbar2 == 0)
			m_pCurrentAeroEffect->m_clrToolbar2 = m_dwmColorRGB;

		if (m_aeroEffect == AERO_EFFECT_CUSTOM || m_aeroEffect == AERO_EFFECT_SOLID) {
			m_pCurrentAeroEffect->m_baseColor = PluginConfig.m_ipBackgroundGradientHigh;
			m_pCurrentAeroEffect->m_gradientColor = PluginConfig.m_ipBackgroundGradient;
			if (m_aeroEffect == AERO_EFFECT_CUSTOM)
				m_pCurrentAeroEffect->m_clrBack = PluginConfig.m_ipBackgroundGradientHigh;
		}

		m_BrushBack = ::CreateSolidBrush(m_pCurrentAeroEffect->m_clrBack);
	}
	else {
		m_pCurrentAeroEffect = nullptr;
		m_glowSize = 10;
		m_BrushBack = ::CreateSolidBrush(0);
	}

	for (TContainerData *p = pFirstContainer; p; p = p->pNext) {
		InvalidateRect(p->m_hwndTabs, nullptr, TRUE);
		InvalidateRect(p->m_hwnd, nullptr, TRUE);
		if (IsWindow(GetDlgItem(p->m_hwnd, 5000)))
			InvalidateRect(GetDlgItem(p->m_hwnd, 5000), nullptr, TRUE);
	}
}

void CSkin::setAeroEffect(LRESULT effect)
{
	if (effect == -1)
		effect = static_cast<LRESULT>(db_get_dw(0, SRMSGMOD_T, "aerostyle", AERO_EFFECT_NONE));

	if (effect >= 0 && effect < AERO_EFFECT_LAST)
		m_aeroEffect = (UINT)effect;
	else
		m_aeroEffect = AERO_EFFECT_NONE;

	initAeroEffect();
	db_set_dw(0, SRMSGMOD_T, "aerostyle", m_aeroEffect);
}

/////////////////////////////////////////////////////////////////////////////////////////
// extract the aero skin images from the DLL and store them in
// the private data folder.
// runs at every startup

void CSkin::extractSkinsAndLogo(bool fForceOverwrite) const
{
	wchar_t tszBasePath[MAX_PATH];
	wcsncpy_s(tszBasePath, M.getDataPath(), _TRUNCATE);
	if (tszBasePath[mir_wstrlen(tszBasePath) - 1] != '\\')
		mir_wstrcat(tszBasePath, L"\\");

	CreateDirectoryTreeW(tszBasePath);

	m_fAeroSkinsValid = true;

	for (auto &it : my_default_skin)
		if (!Utils::extractResource(g_plugin.getInst(), it.ulID, L"SKIN_GLYPH", tszBasePath, it.tszName, fForceOverwrite))
			m_fAeroSkinsValid = false;
}

/////////////////////////////////////////////////////////////////////////////////////////
// redraw the splitter area between the message input and message log area only

void CMsgDialog::UpdateToolbarBG()
{
	RECT rcUpdate, rcTmp;
	::GetWindowRect(m_pLog->GetHwnd(), &rcTmp);

	POINT	pt;
	pt.x = rcTmp.left;
	pt.y = rcTmp.top;
	::ScreenToClient(m_hwnd, &pt);

	rcUpdate.left = 0;
	rcUpdate.top = pt.y;

	::GetClientRect(m_hwnd, &rcTmp);
	rcUpdate.right = rcTmp.right;
	rcUpdate.bottom = rcTmp.bottom;

	if (M.isAero() || M.isDwmActive())
		m_fLimitedUpdate = true; 	// skip unrelevant window updates when we have buffered paint avail
	::RedrawWindow(m_hwnd, &rcUpdate, nullptr, RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW);
	BB_RedrawButtons();
	m_fLimitedUpdate = false;
}

/////////////////////////////////////////////////////////////////////////////////////////
// fill a background area with the default color. This can be either the configured
// fill color or default system color.
//
// @param hdc: device context
// @param rc:  area to fill.

void CSkin::FillBack(const HDC hdc, RECT* rc)
{
	if (nullptr == CSkin::m_BrushFill) {
		if (PluginConfig.m_fillColor)
			CSkin::m_BrushFill = ::CreateSolidBrush(PluginConfig.m_fillColor);
	}

	if (PluginConfig.m_fillColor)
		::FillRect(hdc, rc, CSkin::m_BrushFill);
	else
		::FillRect(hdc, rc, GetSysColorBrush(COLOR_3DFACE));
}

/////////////////////////////////////////////////////////////////////////////////////////

bool CSkin::IsThemed()
{
	return !(m_skinEnabled && !SkinItems[ID_EXTBKBUTTONSNPRESSED].IGNORED && !SkinItems[ID_EXTBKBUTTONSPRESSED].IGNORED && !SkinItems[ID_EXTBKBUTTONSMOUSEOVER].IGNORED);
}