//-----------------------------------------------------------------------------
// File: D3DFont.h
//
// Desc: Texture-based font class
//
// Copyright (c)  Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
#ifndef D3DFONT_H
#define D3DFONT_H
#include <tchar.h>
#include <D3D9.h>


// Font creation flags
#define D3DFONT_BOLD        0x0001
#define D3DFONT_ITALIC      0x0002
#define D3DFONT_ZENABLE     0x0004

// Font rendering flags
#define D3DFONT_CENTERED_X  0x0001
#define D3DFONT_CENTERED_Y  0x0002
#define D3DFONT_TWOSIDED    0x0004
#define D3DFONT_FILTERED    0x0008
#define D3DFONT_BORDER		0x0010
#define D3DFONT_COLORTABLE	0x0020


//-----------------------------------------------------------------------------
// Name: class CD3DFont
// Desc: Texture-based font class for doing text in a 3D scene.
//-----------------------------------------------------------------------------
class CD3DFont
{
	TCHAR   m_strFontName[80];            // Font properties
	DWORD   m_dwFontHeight;
	DWORD   m_dwFontFlags;

	LPDIRECT3DDEVICE9       m_pd3dDevice; // A D3DDevice used for rendering
	LPDIRECT3DTEXTURE9      m_pTexture;   // The d3d texture for this font
	LPDIRECT3DVERTEXBUFFER9 m_pVB;        // VertexBuffer for rendering text
	DWORD   m_dwTexWidth;                 // Texture dimensions
	DWORD   m_dwTexHeight;
	FLOAT   m_fTextScale;
	FLOAT   m_fTexCoords[256 - 32][4];
	DWORD   m_dwSpacing;                  // Character pixel spacing per side

	// Stateblocks for setting and restoring render states
	LPDIRECT3DSTATEBLOCK9 m_pStateBlockSaved;
	LPDIRECT3DSTATEBLOCK9 m_pStateBlockDrawText;

public:
	// 2D and 3D text drawing functions
	HRESULT DrawText(FLOAT x, FLOAT y, DWORD dwColor, const WCHAR* strText, DWORD dwFlags = 0L);

	// Function to get extent of text
	HRESULT GetTextExtent(const WCHAR* strText, SIZE* pSize);

	// Initializing and destroying device-dependent objects
	HRESULT InitDeviceObjects(LPDIRECT3DDEVICE9 pd3dDevice);
	HRESULT RestoreDeviceObjects();
	HRESULT InvalidateDeviceObjects();
	HRESULT DeleteDeviceObjects();

	LPDIRECT3DDEVICE9 getDevice() const { return m_pd3dDevice; }
	// Constructor / destructor
	CD3DFont(const TCHAR* strFontName, DWORD dwHeight, DWORD dwFlags = 0L);
	~CD3DFont();
};

#endif