// 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 XFA_FWL_CORE_IFWL_PUSHBUTTON_H_
#define XFA_FWL_CORE_IFWL_PUSHBUTTON_H_

#include "xfa/fwl/core/cfwl_widgetimpproperties.h"
#include "xfa/fwl/core/ifwl_dataprovider.h"
#include "xfa/fwl/core/ifwl_widget.h"

#define FWL_STYLEEXT_PSB_Left (0L << 0)
#define FWL_STYLEEXT_PSB_Center (1L << 0)
#define FWL_STYLEEXT_PSB_Right (2L << 0)
#define FWL_STYLEEXT_PSB_Top (0L << 2)
#define FWL_STYLEEXT_PSB_VCenter (1L << 2)
#define FWL_STYLEEXT_PSB_Bottom (2L << 2)
#define FWL_STYLEEXT_PSB_TextOnly (0L << 4)
#define FWL_STYLEEXT_PSB_IconOnly (1L << 4)
#define FWL_STYLEEXT_PSB_TextIcon (2L << 4)
#define FWL_STYLEEXT_PSB_HLayoutMask (3L << 0)
#define FWL_STYLEEXT_PSB_VLayoutMask (3L << 2)
#define FWL_STYLEEXT_PSB_ModeMask (3L << 4)
#define FWL_STATE_PSB_Hovered (1 << FWL_WGTSTATE_MAX)
#define FWL_STATE_PSB_Pressed (1 << (FWL_WGTSTATE_MAX + 1))
#define FWL_STATE_PSB_Default (1 << (FWL_WGTSTATE_MAX + 2))

class CFWL_MsgMouse;
class CFWL_PushButtonImpDelegate;
class CFWL_WidgetImpProperties;
class CFX_DIBitmap;
class IFWL_Widget;

class IFWL_PushButtonDP : public IFWL_DataProvider {
 public:
  virtual CFX_DIBitmap* GetPicture(IFWL_Widget* pWidget) = 0;
};

class IFWL_PushButton : public IFWL_Widget {
 public:
  IFWL_PushButton(const CFWL_WidgetImpProperties& properties);
  ~IFWL_PushButton() override;

  // IFWL_Widget
  FWL_Type GetClassID() const override;
  FWL_Error Initialize() override;
  void Finalize() override;
  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
  void SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE) override;
  FWL_Error Update() override;
  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                       const CFX_Matrix* pMatrix = nullptr) override;

 protected:
  friend class CFWL_PushButtonImpDelegate;

  void DrawBkground(CFX_Graphics* pGraphics,
                    IFWL_ThemeProvider* pTheme,
                    const CFX_Matrix* pMatrix);
  void DrawText(CFX_Graphics* pGraphics,
                IFWL_ThemeProvider* pTheme,
                const CFX_Matrix* pMatrix);
  uint32_t GetPartStates();
  void UpdateTextOutStyles();

  CFX_RectF m_rtClient;
  CFX_RectF m_rtCaption;
  FX_BOOL m_bBtnDown;
  uint32_t m_dwTTOStyles;
  int32_t m_iTTOAlign;
};

class CFWL_PushButtonImpDelegate : public CFWL_WidgetImpDelegate {
 public:
  CFWL_PushButtonImpDelegate(IFWL_PushButton* pOwner);
  void OnProcessMessage(CFWL_Message* pMessage) override;
  void OnProcessEvent(CFWL_Event* pEvent) override;
  void OnDrawWidget(CFX_Graphics* pGraphics,
                    const CFX_Matrix* pMatrix = nullptr) override;

 protected:
  void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
  void OnLButtonDown(CFWL_MsgMouse* pMsg);
  void OnLButtonUp(CFWL_MsgMouse* pMsg);
  void OnMouseMove(CFWL_MsgMouse* pMsg);
  void OnMouseLeave(CFWL_MsgMouse* pMsg);
  void OnKeyDown(CFWL_MsgKey* pMsg);
  IFWL_PushButton* m_pOwner;
};

#endif  // XFA_FWL_CORE_IFWL_PUSHBUTTON_H_