GfxFont.cpp
上传用户:jalin138
上传日期:2022-02-12
资源大小:5720k
文件大小:7k
- #include "GfxFont.h"
-
- #include <atlbase.h>
- #include <stdio.h>
- #include <wchar.h>
- #include <atlconv.h>
- #pragma comment(lib,"Gdi32.lib")
- __inline float _floor(float f)
- {
- static int _n;
- _asm fld f
- _asm fistp _n
- return (float)_n;
- }
- // 65级灰度表
- const unsigned char g_byAlphaLevel[65] =
- {
- 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48,
- 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96,100,
- 104,108,112,116,120,124,128,132,136,140,144,148,152,
- 156,160,164,168,172,176,180,184,188,192,196,200,204,
- 208,212,216,220,224,228,232,236,240,244,248,252,255
- };
- GfxFont::GfxFont(const char* lpsFontName, int nFaceSize, BOOL bBold, BOOL bItalic, BOOL bAntialias)
- {
- m_pHGE = hgeCreate(HGE_VERSION);
- // 创建GDI相关设备
- HDC hDC = GetDC(m_pHGE->System_GetState(HGE_HWND));
- m_hMemDC = CreateCompatibleDC(hDC);
- if (NULL == m_hMemDC) return;
- ReleaseDC(m_pHGE->System_GetState(HGE_HWND),hDC);
- ::SetMapMode(m_hMemDC, MM_TEXT);
- ::SetTextColor(m_hMemDC,RGB(255,255,255));
- ::SetBkColor(m_hMemDC,RGB(0,0,0));
- m_hFont = CreateFont(
- -nFaceSize,
- 0,
- 0,
- 0,
- (bBold) ? FW_BOLD : FW_NORMAL,
- bItalic,
- FALSE,
- FALSE,
- DEFAULT_CHARSET,
- OUT_DEFAULT_PRECIS,
- CLIP_DEFAULT_PRECIS,
- DEFAULT_QUALITY,
- FF_DONTCARE | DEFAULT_PITCH,
- lpsFontName);
- if (NULL == (m_hFont)) return;
- SelectObject(m_hMemDC, m_hFont);
- memset(m_Glyphs,0,sizeof(TENGINEFONTGLYPH)*font_count);
- m_nAntialias = bAntialias ? GGO_GRAY8_BITMAP : GGO_BITMAP;
- TEXTMETRIC tm;
- ::GetTextMetrics(m_hMemDC,&tm);
- m_nAscent = tm.tmAscent;
- m_nFontSize = static_cast<float>(nFaceSize);
- m_nKerningWidth = 0;
- m_nKerningHeight= 0;
- m_pSprite = new hgeSprite(0, 0, 0, 0, 0);
- m_pSprite->SetColor(ARGB(255, 255, 255, 255));
- }
- GfxFont::~GfxFont(void)
- {
- for (int nIdx = 0; nIdx < font_count; ++nIdx)
- { if (m_Glyphs[nIdx].t) m_pHGE->Texture_Free(m_Glyphs[nIdx].t); }
- if ((m_hFont)) DeleteObject(m_hFont);
- if ((m_hMemDC)) DeleteDC(m_hMemDC);
- if(m_pSprite) delete m_pSprite;
- if(m_pHGE) m_pHGE->Release();
- }
- // 渲染文本
- void GfxFont::Print( float x, float y, const char *format, ... )
- {
- char sBuffer[10240] = {0};
- char *lpsArg=(char*)&format+sizeof(format);
- vsprintf(sBuffer, format, lpsArg);
- USES_CONVERSION;
- Render(x,y,A2W(sBuffer));
- }
- void GfxFont::Render(float x, float y, const wchar_t* text )
- {
- float offsetX = x;
- float offsetY = y;
- while(*text)
- {
- if (*text == L'n' || *text == L'r')
- {
- offsetX = x;
- offsetY += (m_nFontSize + m_nKerningHeight);
- }
- else
- {
- unsigned int idx = GetGlyphByCharacter(*text);
- if (idx > 0)
- {
- m_pSprite->SetTexture(m_Glyphs[idx].t);
- m_pSprite->SetTextureRect(0, 0, m_Glyphs[idx].w, m_Glyphs[idx].h);
- m_pSprite->Render(offsetX - m_Glyphs[idx].x, offsetY - m_Glyphs[idx].y);
- offsetX += (GetWidthFromCharacter(*text) + m_nKerningWidth);
- }
- else
- {
- offsetX += (GetWidthFromCharacter(*text) + m_nKerningWidth);
- }
- }
- ++text;
- }
- }
- // 设置与获取颜色
- void GfxFont::SetColor( DWORD dwColor, int i )
- {
- m_pSprite->SetColor(dwColor,i);
- }
- DWORD GfxFont::GetColor(int i)
- {
- return m_pSprite->GetColor(i);
- }
- // 获取文本宽高
- SIZE GfxFont::GetTextSize( const wchar_t* text )
- {
- SIZE dim = {0, static_cast<LONG>(m_nFontSize)};
- float nRowWidth = 0;
- while(*text)
- {
- if (*text == L'n' || *text == L'r')
- {
- dim.cy += static_cast<LONG>(m_nFontSize + m_nKerningHeight);
- if (dim.cx < static_cast<LONG>(nRowWidth))
- dim.cx = static_cast<LONG>(nRowWidth);
- nRowWidth = 0;
- }
- else
- nRowWidth += (GetWidthFromCharacter(*text) + m_nKerningWidth);
- ++text;
- }
- if (dim.cx < static_cast<LONG>(nRowWidth))
- dim.cx = static_cast<LONG>(nRowWidth);
- return dim;
- }
- // 根据坐标获取字符
- wchar_t GfxFont::GetCharacterFromPos( const wchar_t* text, float pixel_x, float pixel_y )
- {
- float x = 0;
- float y = 0;
- while (*text)
- {
- if (*text == L'n' || *text == L'r')
- {
- x = 0;
- y += (m_nFontSize+m_nKerningHeight);
- text++;
- if (!(*text))
- break;
- }
- float w = GetWidthFromCharacter(*text);
- if (pixel_x > x && pixel_x <= x + w &&
- pixel_y > y && pixel_y <= y + m_nFontSize)
- return *text;
- x += (w+m_nKerningWidth);
- text++;
- }
- return L' ';
- }
- // 设置字间距
- void GfxFont::SetKerningWidth( float kerning )
- {
- m_nKerningWidth = kerning;
- }
- void GfxFont::SetKerningHeight( float kerning )
- {
- m_nKerningHeight = kerning;
- }
- // 获取字间距
- float GfxFont::GetKerningWidth()
- {
- return m_nKerningWidth;
- }
- float GfxFont::GetKerningHeight()
- {
- return m_nKerningHeight;
- }
- // 字体大小
- float GfxFont::GetFontSize()
- {
- return m_nFontSize;
- }
- // 根据字符获取轮廓
- unsigned int GfxFont::GetGlyphByCharacter( wchar_t c )
- {
- unsigned int idx = (unsigned int)c;
- if (NULL == (m_Glyphs[idx].t)) CacheCharacter(idx,c);
- return idx;
- }
- inline float GfxFont::GetWidthFromCharacter( wchar_t c, bool original )
- {
- unsigned int idx = GetGlyphByCharacter(c);
- if (original && idx > 0 && idx < font_count) return m_Glyphs[idx].c;
- return (idx >= 0x2000) ? m_nFontSize : _floor(m_nFontSize / 2);
- }
- inline void GfxFont::CacheCharacter(unsigned int idx, wchar_t c)
- {
- if (idx < font_count && NULL == m_Glyphs[idx].t)
- {
- UINT nChar = (UINT)c;
- MAT2 mat2 = {{0,1},{0,0},{0,0},{0,1}};
- GLYPHMETRICS gm;
- DWORD nLen = ::GetGlyphOutlineW(m_hMemDC,nChar,m_nAntialias,&gm,0,NULL,&mat2);
- HTEXTURE hTex = m_pHGE->Texture_Create(gm.gmBlackBoxX,gm.gmBlackBoxY);
- if (NULL == hTex) return;
- if((signed)nLen > 0)
- {
- LPBYTE lpBuf = new BYTE[nLen];
- if (nLen == ::GetGlyphOutlineW(m_hMemDC,nChar,m_nAntialias,&gm,nLen,lpBuf,&mat2))
- {
- BYTE* lpSrc = lpBuf;
- DWORD* lpDst = m_pHGE->Texture_Lock(hTex,FALSE);
- if (GGO_BITMAP == m_nAntialias)
- {
- LONG nSrcPitch = (gm.gmBlackBoxX / 32 + (gm.gmBlackBoxX % 32 == 0 ? 0 : 1)) * 4;
- LONG nDstPitch = m_pHGE->Texture_GetWidth(hTex);
- for (UINT y = 0; y < gm.gmBlackBoxY; ++y)
- {
- for (UINT x = 0; x < gm.gmBlackBoxX; ++x)
- {
- for(UINT k = 0; k < 8; ++k)
- {
- UINT i = 8 * x + k;
- if (i >= gm.gmBlackBoxX)
- {
- x+=7;
- break;
- }
- lpDst[i] = ((lpSrc[x] >> (7 - k)) & 1) ? 0xFFFFFFFF : 0x0;
- }
- }
- lpSrc += nSrcPitch;
- lpDst += nDstPitch;
- }
- }
- else
- {
- LONG nSrcPitch = (gm.gmBlackBoxX / 4 + (gm.gmBlackBoxX % 4 == 0 ? 0 : 1)) * 4;
- LONG nDstPitch = m_pHGE->Texture_GetWidth(hTex);
- for (UINT y = 0; y < gm.gmBlackBoxY; ++y)
- {
- for (UINT x = 0; x < gm.gmBlackBoxX; ++x)
- {
- lpDst[x] = ARGB(g_byAlphaLevel[lpSrc[x]],0xFF,0xFF,0xFF);
- }
- lpSrc += nSrcPitch;
- lpDst += nDstPitch;
- }
- }
- m_pHGE->Texture_Unlock(hTex);
- }
- delete lpBuf;
- }
- else
- {
- // 非正常显示字符
- }
- m_Glyphs[idx].t = hTex;
- m_Glyphs[idx].w = static_cast<float>(gm.gmBlackBoxX);
- m_Glyphs[idx].h = static_cast<float>(gm.gmBlackBoxY);
- m_Glyphs[idx].x = static_cast<float>(-gm.gmptGlyphOrigin.x);
- m_Glyphs[idx].y = static_cast<float>(-m_nAscent + gm.gmptGlyphOrigin.y);
- m_Glyphs[idx].c = static_cast<float>(gm.gmCellIncX);
- }
- }