// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef _FWL_THEME_H
#define _FWL_THEME_H
class IFWL_Widget;
class CFWL_ThemePart;
class CFWL_ThemeBackground;
class CFWL_ThemeText;
class CFWL_ThemeElement;
class IFWL_ThemeProvider;
#define FWL_WGTCAPACITY_CXBorder			1
#define FWL_WGTCAPACITY_CYBorder			2
#define FWL_WGTCAPACITY_ScrollBarWidth		3
#define FWL_WGTCAPACITY_EdgeFlat			4
#define FWL_WGTCAPACITY_EdgeRaised			5
#define FWL_WGTCAPACITY_EdgeSunken			6
#define FWL_WGTCAPACITY_Font				7
#define FWL_WGTCAPACITY_FontSize			8
#define FWL_WGTCAPACITY_TextColor			9
#define FWL_WGTCAPACITY_TextSelColor		10
#define FWL_WGTCAPACITY_LineHeight			11
#define FWL_WGTCAPACITY_UIMargin			12
#define FWL_WGTCAPACITY_SpaceAboveBelow		13
#define FWL_WGTCAPACITY_MAX					65535
class CFWL_ThemePart
{
public:
    CFWL_ThemePart()
        : m_pWidget(NULL)
        , m_iPart(0)
        , m_dwStates(0)
        , m_dwData(0)
        , m_pData(NULL)
    {
        m_rtPart.Reset();
        m_matrix.Reset();
    }
    CFX_Matrix				 m_matrix;
    CFX_RectF				 m_rtPart;
    IFWL_Widget				*m_pWidget;
    FX_INT32				 m_iPart;
    FX_DWORD				 m_dwStates;
    FX_DWORD				 m_dwData;
    FX_LPVOID				 m_pData;
};
class CFWL_ThemeBackground : public CFWL_ThemePart
{
public:
    CFWL_ThemeBackground()
        : m_pGraphics(NULL)
        , m_pImage(NULL)
        , m_pPath(NULL)
    {
    }
    CFX_Graphics			*m_pGraphics;
    CFX_DIBitmap			*m_pImage;
    CFX_Path				*m_pPath;
};
class CFWL_ThemeText : public CFWL_ThemePart
{
public:
    CFWL_ThemeText()
        : m_pGraphics(NULL)
    {
    }
    CFX_WideString			 m_wsText;
    FX_DWORD				 m_dwTTOStyles;
    FX_INT32				 m_iTTOAlign;
    CFX_Graphics		    *m_pGraphics;
};
class IFWL_ThemeProvider
{
public:
    virtual FX_BOOL		IsValidWidget(IFWL_Widget *pWidget) = 0;
    virtual FX_DWORD	GetThemeID(IFWL_Widget *pWidget) = 0;
    virtual FX_DWORD	SetThemeID(IFWL_Widget *pWidget, FX_DWORD dwThemeID, FX_BOOL bChildren = TRUE) = 0;
    virtual FWL_ERR		GetThemeMatrix(IFWL_Widget *pWidget, CFX_Matrix &matrix) = 0;
    virtual FWL_ERR		SetThemeMatrix(IFWL_Widget *pWidget, const CFX_Matrix &matrix) = 0;
    virtual FX_BOOL		DrawBackground(CFWL_ThemeBackground *pParams) = 0;
    virtual FX_BOOL		DrawText(CFWL_ThemeText *pParams) = 0;
    virtual FX_LPVOID   GetCapacity(CFWL_ThemePart *pThemePart, FX_DWORD dwCapacity) = 0;
    virtual FX_BOOL		IsCustomizedLayout(IFWL_Widget *pWidget) = 0;
    virtual FWL_ERR		GetPartRect(CFWL_ThemePart *pThemePart, CFX_RectF &rtPart) = 0;
    virtual FX_BOOL		IsInPart(CFWL_ThemePart *pThemePart, FX_FLOAT fx, FX_FLOAT fy) = 0;
    virtual	FX_BOOL		CalcTextRect(CFWL_ThemeText *pParams, CFX_RectF &rect) = 0;
};
#endif