d4708
/
source-engine
mirror of https://github.com/nillerusr/source-engine.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
339 Commits
25 Branches
6 Tags
221 MiB
 
 
 
 
 
 
Tree: 2dca8fd6c7
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '2dca8fd6c7'
${ noResults }
source-engine/vgui2/vgui_surfacelib/linuxfont.cpp

872 lines
26 KiB
Raw Blame History

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//=============================================================================//
#include "vgui_surfacelib/linuxfont.h"
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#ifdef OSX
#include <malloc/malloc.h>
#else
#include <malloc.h>
#endif
#include <tier0/dbg.h>
#include <vgui/ISurface.h>
#include <utlbuffer.h>
#include <fontconfig/fontconfig.h>
#include <freetype/ftbitmap.h>
#include "materialsystem/imaterialsystem.h"
#include "vgui_surfacelib/FontManager.h"
#include "FontEffects.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
#define FT_LOAD_FLAGS 0 //$ (FT_LOAD_TARGET_LIGHT)
namespace {
// Freetype uses a lot of fixed float values that are 26.6 splits of a 32 bit word.
// to make it an int, shift down the 6 bits and round up if the high bit of the 6
// bits was set.
inline int32_t FIXED6_2INT(int32_t x) { return ( (x>>6) + ( (x&0x20) ? (x<0 ? -1 : 1) : 0) ); }
inline float FIXED6_2FLOAT(int32_t x) { return (float)x / 64.0f; }
inline int32_t INT_2FIXED6(int32_t x) { return x << 6; }
}
bool CLinuxFont::ms_bSetFriendlyNameCacheLessFunc = false;
CUtlRBTree< CLinuxFont::font_name_entry > CLinuxFont::m_FriendlyNameCache;
//-----------------------------------------------------------------------------
// Purpose: Constructor
//-----------------------------------------------------------------------------
CLinuxFont::CLinuxFont() :
m_ExtendedABCWidthsCache(256, 0, &ExtendedABCWidthsCacheLessFunc),
m_ExtendedKernedABCWidthsCache( 256, 0, &ExtendedKernedABCWidthsCacheLessFunc )
{
m_face = NULL;
m_faceValid = false;
m_iTall = 0;
m_iHeight = 0;
m_iHeightRequested = 0;
m_iWeight = 0;
m_iFlags = 0;
m_iMaxCharWidth = 0;
m_bAntiAliased = false;
m_bUnderlined = false;
m_iBlur = 0;
m_iScanLines = 0;
m_bRotary = false;
m_bAdditive = false;
if ( !ms_bSetFriendlyNameCacheLessFunc )
{
ms_bSetFriendlyNameCacheLessFunc = true;
SetDefLessFunc( m_FriendlyNameCache );
}
}
//-----------------------------------------------------------------------------
// Purpose: Destructor
//-----------------------------------------------------------------------------
CLinuxFont::~CLinuxFont()
{
if( m_faceValid )
{
FT_Done_Face( m_face );
m_face = NULL;
m_faceValid = false;
}
}
//-----------------------------------------------------------------------------
// Purpose: build a map of friendly (char *) name to crazy ATSU bytestream, so we can ask for "Tahoma" and actually load it
//-----------------------------------------------------------------------------
void CLinuxFont::CreateFontList()
{
if ( m_FriendlyNameCache.Count() > 0 )
return;
#if HAVE_FC
if(!FcInit())
return;
FcConfig *config;
FcPattern *pat;
FcObjectSet *os;
FcFontSet *fontset;
int i;
char *file;
const char *name;
config = FcConfigGetCurrent();
pat = FcPatternCreate();
os = FcObjectSetCreate();
FcObjectSetAdd(os, FC_FILE);
FcObjectSetAdd(os, FC_FULLNAME);
FcObjectSetAdd(os, FC_FAMILY);
FcObjectSetAdd(os, FC_SCALABLE);
fontset = FcFontList(config, pat, os);
if(!fontset)
return;
for(i = 0; i < fontset->nfont; i++)
{
FcBool scalable;
if ( FcPatternGetBool(fontset->fonts[i], FC_SCALABLE, 0, &scalable) == FcResultMatch && !scalable )
continue;
if ( FcPatternGetString(fontset->fonts[i], FC_FAMILY, 0, (FcChar8**)&name) != FcResultMatch )
continue;
if ( FcPatternGetString(fontset->fonts[i], FC_FILE, 0, (FcChar8**)&file) != FcResultMatch )
continue;
font_name_entry entry;
entry.m_pchFile = (char *)malloc( Q_strlen(file) + 1 );
entry.m_pchFriendlyName = (char *)malloc( Q_strlen(name) +1);
Q_memcpy( entry.m_pchFile, file, Q_strlen(file) + 1 );
Q_memcpy( entry.m_pchFriendlyName, name, Q_strlen(name) +1);
m_FriendlyNameCache.Insert( entry );
// substitute Vera Sans for Tahoma on X
if ( !V_stricmp( name, "Bitstream Vera Sans" ) )
{
name = "Tahoma";
entry.m_pchFile = (char *)malloc( Q_strlen(file) + 1 );
entry.m_pchFriendlyName = (char *)malloc( Q_strlen(name) +1);
Q_memcpy( entry.m_pchFile, file, Q_strlen(file) + 1 );
Q_memcpy( entry.m_pchFriendlyName, name, Q_strlen(name) +1);
m_FriendlyNameCache.Insert( entry );
name = "Verdana";
entry.m_pchFile = (char *)malloc( Q_strlen(file) + 1 );
entry.m_pchFriendlyName = (char *)malloc( Q_strlen(name) +1);
Q_memcpy( entry.m_pchFile, file, Q_strlen(file) + 1 );
Q_memcpy( entry.m_pchFriendlyName, name, Q_strlen(name) +1);
m_FriendlyNameCache.Insert( entry );
name = "Lucidia Console";
entry.m_pchFile = (char *)malloc( Q_strlen(file) + 1 );
entry.m_pchFriendlyName = (char *)malloc( Q_strlen(name) +1);
Q_memcpy( entry.m_pchFile, file, Q_strlen(file) + 1 );
Q_memcpy( entry.m_pchFriendlyName, name, Q_strlen(name) +1);
m_FriendlyNameCache.Insert( entry );
}
}
FcFontSetDestroy(fontset);
FcObjectSetDestroy(os);
FcPatternDestroy(pat);
#endif
}
#if HAVE_FC
static FcPattern* FontMatch(const char* type, ...)
{
FcValue fcvalue;
va_list ap;
va_start(ap, type);
FcPattern* pattern = FcPatternCreate();
for (;;) {
// FcType is promoted to int when passed through ...
fcvalue.type = static_cast<FcType>(va_arg(ap, int));
switch (fcvalue.type) {
case FcTypeString:
fcvalue.u.s = va_arg(ap, const FcChar8 *);
break;
case FcTypeInteger:
fcvalue.u.i = va_arg(ap, int);
break;
default:
Assert(!"FontMatch unhandled type");
}
FcPatternAdd(pattern, type, fcvalue, FcFalse);
type = va_arg(ap, const char *);
if (!type)
break;
};
va_end(ap);
FcConfigSubstitute(NULL, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcResult result;
FcPattern* match = FcFontMatch(NULL, pattern, &result);
FcPatternDestroy(pattern);
return match;
}
#endif
bool CLinuxFont::CreateFromMemory(const char *windowsFontName, void *data, int datasize, int tall, int weight, int blur, int scanlines, int flags)
{
// setup font properties
m_szName = windowsFontName;
m_iTall = tall;
m_iWeight = weight;
m_iFlags = flags;
m_bAntiAliased = flags & vgui::ISurface::FONTFLAG_ANTIALIAS;
m_bUnderlined = flags & vgui::ISurface::FONTFLAG_UNDERLINE;
m_iDropShadowOffset = (flags & vgui::ISurface::FONTFLAG_DROPSHADOW) ? 1 : 0;
m_iOutlineSize = (flags & vgui::ISurface::FONTFLAG_OUTLINE) ? 1 : 0;
m_iBlur = blur;
m_iScanLines = scanlines;
m_bRotary = flags & vgui::ISurface::FONTFLAG_ROTARY;
m_bAdditive = flags & vgui::ISurface::FONTFLAG_ADDITIVE;
if ( !HushAsserts() )
{
// These flags are NYI in Linux right now.
Assert( !m_bAntiAliased );
Assert( !m_bUnderlined );
Assert( !m_bAdditive );
}
Assert( !m_faceValid );
FT_Error error = FT_New_Memory_Face( FontManager().GetFontLibraryHandle(), (FT_Byte *)data, datasize, 0, &m_face );
if ( error )
{
// FT_Err_Unknown_File_Format?
Msg( "FT_New_Memory_Face failed. font:%s error:%d\n", windowsFontName, error );
return false;
}
if ( m_face->charmap == NULL )
{
FT_Error error = FT_Select_Charmap( m_face, FT_ENCODING_APPLE_ROMAN );
if ( error )
{
FT_Done_Face( m_face );
m_face = NULL;
Msg( "Font %s has no valid charmap\n", windowsFontName );
return false;
}
}
m_iHeightRequested = m_iTall;
// Loop through until we get a height that is less than or equal to the requested height.
// We tried using the BBOX ascender / descender, but it was overly large compared to Windows.
// We also tried using the size metrics, but the ascender wasn't high enough and accents were cut off.
// Descender from size metrics was too low for fonts with no lower case characters.
// Compromise: Use ascent from O' and descent from bbox. Diffs on textures indicate this is best choice.
// Used these command lines vars and convars to help beyond compare linux and windows:
// -precachefontintlchars / -enable_font_bounding_boxes / vgui_spew_fonts / mat_texture_save_fonts
bool bFirstTimeThrough = true;
int IncAmount = -1;
for ( ;; )
{
bool SetPixelSizesFailed = false;
FT_Error error = FT_Set_Pixel_Sizes( m_face, 0, m_iHeightRequested );
if ( error )
{
SetPixelSizesFailed = true;
// If FT_Set_Pixel_Sizes fails, it should be because we've got a fixed-size font.
Assert( m_face->face_flags & FT_FACE_FLAG_FIXED_SIZES );
Assert( !( m_face->face_flags & FT_FACE_FLAG_SCALABLE ) );
if ( m_face->num_fixed_sizes )
{
// Pick width/height of first size.
int width = m_face->available_sizes[ 0 ].width;
m_iHeightRequested = m_face->available_sizes[ 0 ].height;
// Loop through all the other available sizes and find the closest match.
for ( int i = 1; i < m_face->num_fixed_sizes; i++ )
{
if ( ( m_face->available_sizes[ i ].height <= m_iTall ) &&
( m_face->available_sizes[ i ].height > m_iHeightRequested ) )
{
width = m_face->available_sizes[ i ].width;
m_iHeightRequested = m_face->available_sizes[ i ].height;
}
}
FT_Size_RequestRec req;
Q_memset( &req, 0, sizeof( req ) );
req.type = FT_SIZE_REQUEST_TYPE_REAL_DIM;
req.width = INT_2FIXED6( width );
req.height = INT_2FIXED6( m_iHeightRequested );
req.horiResolution = 0;
req.vertResolution = 0;
error = FT_Request_Size( m_face, &req );
if ( error )
{
Msg( "FT_Request_Size failed on %s / %s\n",
m_face->family_name ? m_face->family_name : "??",
m_face->style_name ? m_face->style_name : "??" );
}
}
}
FT_Pos ascender, descender;
if( SetPixelSizesFailed )
{
// If SetPixelSizesFailed failed, then we've hopefully got a fixed size
// font, and we can just use the metrics.
ascender = m_face->size->metrics.ascender;
descender = m_face->size->metrics.descender;
}
else
{
// Full bounding box ascent and descent:
// ( a * b ) / 0x10000. y_scale is 16.16.
//$ ascender = FT_MulFix( m_face->bbox.yMax, m_face->size->metrics.y_scale );
descender = FT_MulFix( m_face->bbox.yMin, m_face->size->metrics.y_scale );
// Metrics ascent and descent
ascender = m_face->size->metrics.ascender;
//$ descender = m_face->size->metrics.descender;
// While running with Spanish, the m_face->size->metrics.ascender is less
// than the bitmap_top for the character. This makes GetCharRGBA() chop off
// the top of the O and the accent is skipped. Complete hack here, but we
// check for the tallest character we know about (O') and bump up the ascender
// value if it is greater than what we've currently got.
wchar_t ch = 0xd3;
error = FT_Load_Char( m_face, ch, FT_LOAD_RENDER | FT_LOAD_TARGET_NORMAL);
if ( !error )
{
int glyph_index = FT_Get_Char_Index( m_face, ch );
error = FT_Load_Glyph( m_face, glyph_index, FT_LOAD_RENDER );
if ( !error )
{
FT_GlyphSlot slot = m_face->glyph;
FT_Pos ascenderTop = INT_2FIXED6( slot->bitmap_top );
if( ascenderTop > ascender )
{
ascender = ascenderTop;
}
else if ( !slot->bitmap.rows || !slot->bitmap.width )
{
// We didn't find an O' character in this font: use the full BBox.
ascender = FT_MulFix( m_face->bbox.yMax, m_face->size->metrics.y_scale );
}
}
}
}
m_iAscent = FIXED6_2INT( ascender );
m_iMaxCharWidth = FIXED6_2INT( m_face->size->metrics.max_advance );
const int fxpHeight = ascender + -descender + INT_2FIXED6( m_iDropShadowOffset + 2 * m_iOutlineSize );
m_iHeight = FIXED6_2INT( fxpHeight );
// If we're exact or we got too small, bail.
if ( SetPixelSizesFailed || ( m_iHeight == m_iTall ) || ( m_iHeight < 7 ) || ( m_iHeightRequested <= 1 ) )
break;
if( bFirstTimeThrough )
{
bFirstTimeThrough = false;
// If we're smaller than requested, start searching up.
if ( m_iHeight < m_iTall )
IncAmount = +1;
}
else if( IncAmount > 0 )
{
// If we're searching up and went too far, drop IncAmount and run down.
if( m_iHeight > m_iTall )
IncAmount = -1;
}
else if ( m_iHeight <= m_iTall )
{
// If the height is less than tall, we're done.
break;
}
m_iHeightRequested += IncAmount;
}
m_faceValid = true;
return true;
}
#if !HAVE_FC
char *TryFindFont(const char *winFontName, bool bBold, int italic)
{
static char fontFile[MAX_PATH];
const char *fontName, *fontNamePost;
#ifdef ANDROID
if( strcmp( winFontName, "Courier New") == 0 )
fontName = "LiberationMono-Regular.ttf";
else
fontName = "DroidSansFallback.ttf"; // for chinese/japanese/korean
snprintf( fontFile, sizeof fontFile, "%s/files/%s", getenv("APP_DATA_PATH"), fontName);
#else
// "platform/resource/linux_fonts/";
if( strcmp( winFontName, "Courier New") == 0 )
fontName = "liberationmono";
if( bBold )
{
if( italic )
fontNamePost = "boldoblique";
else
fontNamePost = "bold";
}
else if( italic )
fontNamePost = "oblique";
else
fontNamePost = "regular";
snprintf(fontFile, sizeof fontFile, "platform/resource/linux_fonts/%s-%s.ttf", fontName, fontNamePost);
#endif
return fontFile;
#if 0 // Old detect
const char *fontFileName, *fontFileNamePost = NULL;
fontFileName = "Roboto";
if( bBold )
{
if( italic )
fontFileNamePost = "BoldItalic";
else
fontFileNamePost = "Bold";
}
else if( italic )
fontFileNamePost = "Italic";
else
fontFileNamePost = "Regular";
static char dataFile[MAX_PATH];
if( fontFileNamePost )
snprintf( dataFile, sizeof dataFile, "/system/fonts/%s-%s.ttf", fontFileName, fontFileNamePost );
else
snprintf( dataFile, sizeof dataFile, "/system/fonts/%s.ttf", fontFileName );
if( access( dataFile, R_OK ) != 0 )
{
fontFileNamePost = NULL;
fontFileName = "DroidSans";
if( bBold )
fontFileNamePost = "Bold";
if( fontFileNamePost )
snprintf( dataFile, sizeof dataFile, "/system/fonts/%s-%s.ttf", fontFileName, fontFileNamePost );
else
snprintf( dataFile, sizeof dataFile, "/system/fonts/%s.ttf", fontFileName );
if( access( dataFile, R_OK ) != 0 )
return NULL;
}
return dataFile;
#endif
}
#endif
//-----------------------------------------------------------------------------
// Purpose: Given a font name from windows, match it to the filename and return that.
//-----------------------------------------------------------------------------
char *CLinuxFont::GetFontFileName( const char *windowsFontName, int flags )
{
bool bBold = false;
const char *pchFontName = windowsFontName;
if ( !Q_stricmp( pchFontName, "Tahoma" ) )
pchFontName = "Bitstream Vera Sans";
else if ( !Q_stricmp( pchFontName, "Arial Black" ) || Q_stristr( pchFontName, "bold" ) )
bBold = true;
const int italic = ( flags & vgui::ISurface::FONTFLAG_ITALIC ) ? FC_SLANT_ITALIC : FC_SLANT_ROMAN;
#if !HAVE_FC
char *filename = TryFindFont( windowsFontName, bBold, italic );
Msg("Found font: %s\n", filename);
if( !filename ) return NULL;
return strdup( filename );
#else
const int nFcWeight = bBold ? FC_WEIGHT_BOLD : FC_WEIGHT_NORMAL;
FcPattern *match = FontMatch( FC_FAMILY, FcTypeString, pchFontName,
FC_WEIGHT, FcTypeInteger, nFcWeight,
FC_SLANT, FcTypeInteger, italic,
NULL);
if ( !match )
{
AssertMsg1( false, "Unable to find font named %s\n", windowsFontName );
return NULL;
}
else
{
char *filenameret = NULL;
FcChar8* filename = NULL;
if ( FcPatternGetString(match, FC_FILE, 0, &filename) != FcResultMatch )
{
AssertMsg1( false, "Unable to find font named %s\n", windowsFontName );
}
else
{
filenameret = strdup( ( char * )filename );
}
FcPatternDestroy( match );
Msg("font fc: %s - %s\n", windowsFontName, filenameret);
return filenameret;
}
#endif
}
//-----------------------------------------------------------------------------
// Purpose: writes the char into the specified 32bpp texture
//-----------------------------------------------------------------------------
void CLinuxFont::GetCharRGBA( wchar_t ch, int rgbaWide, int rgbaTall, unsigned char *prgba )
{
bool bShouldAntialias = m_bAntiAliased;
// filter out
if ( ( ch > 0x00FF ) && !( m_iFlags & vgui::ISurface::FONTFLAG_CUSTOM ) )
{
bShouldAntialias = false;
}
FT_Error error = FT_Load_Char( m_face, ch, FT_LOAD_RENDER | FT_LOAD_TARGET_NORMAL );
if ( error )
{
Msg( "Error in FT_Load_Char: ch:%x error:%x\n", (int)ch, error );
return;
}
int glyph_index = FT_Get_Char_Index( m_face, ch );
error = FT_Load_Glyph( m_face, glyph_index, FT_LOAD_RENDER | FT_LOAD_FLAGS );
if ( error )
{
Msg( "Error in FL_Load_Glyph: glyph_index:%d error:%x\n", glyph_index, error );
return;
}
int yBitmapStart = 0;
FT_GlyphSlot slot = m_face->glyph;
int nSkipRows = ( m_iAscent - slot->bitmap_top );
if( nSkipRows < 0 )
{
yBitmapStart = -nSkipRows;
nSkipRows = 0;
}
if ( nSkipRows >= rgbaTall )
{
Msg( "nSkipRows(%d) > rgbaTall(%d) ch:%d\n", nSkipRows, rgbaTall, (int)ch );
return;
}
if ( m_face->glyph->bitmap.width == 0 )
{
Msg( "m_face->glyph->bitmap.width is 0 for ch:%d %s\n", (int)ch, m_face->family_name ? m_face->family_name : "??" );
return;
}
FT_Bitmap bitmap;
FT_Library ftLibrary = FontManager().GetFontLibraryHandle();
FT_Bitmap_New( &bitmap );
error = FT_Bitmap_Convert( ftLibrary, &m_face->glyph->bitmap, &bitmap, 1 );
if( error == 0 )
{
uint32 alpha_scale = 1;
int Width = MIN( rgbaWide, bitmap.width );
unsigned char *rgba = prgba + ( nSkipRows * rgbaWide * 4 );
switch( m_face->glyph->bitmap.pixel_mode )
{
case FT_PIXEL_MODE_MONO: // 8-bit per pixel bitmap
alpha_scale *= 256;
break;
case FT_PIXEL_MODE_GRAY2: // 2-bit per pixel bitmap
alpha_scale *= 64;
break;
case FT_PIXEL_MODE_GRAY4: // 4-bit per pixel bitmap
alpha_scale *= 16;
break;
}
/* now draw to our target surface */
for ( int y = yBitmapStart; y < MIN( bitmap.rows, rgbaTall - nSkipRows ); y++ )
{
for ( int x = 0; x < Width; x++ )
{
int rgbaOffset = 4 * ( x + m_iBlur ); // +(rgbaTall-y-1)*rgbaWide*4
uint32 alpha = Min( 255U, alpha_scale * bitmap.buffer[ x + y * bitmap.pitch ] );
rgba[ rgbaOffset + 0 ] = 255;
rgba[ rgbaOffset + 1 ] = 255;
rgba[ rgbaOffset + 2 ] = 255;
rgba[ rgbaOffset + 3 ] = alpha;
}
rgba += ( rgbaWide * 4 );
}
// apply requested effects in specified order
ApplyDropShadowToTexture( rgbaWide, rgbaTall, prgba, m_iDropShadowOffset );
ApplyOutlineToTexture( rgbaWide, rgbaTall, prgba, m_iOutlineSize );
ApplyGaussianBlurToTexture( rgbaWide, rgbaTall, prgba, m_iBlur );
ApplyScanlineEffectToTexture( rgbaWide, rgbaTall, prgba, m_iScanLines );
ApplyRotaryEffectToTexture( rgbaWide, rgbaTall, prgba, m_bRotary );
}
else
{
Msg( "FT_Bitmap_Convert failed: %d on %s\n", error, m_face->family_name ? m_face->family_name : "??" );
}
FT_Bitmap_Done( ftLibrary, &bitmap );
}
void CLinuxFont::GetKernedCharWidth( wchar_t ch, wchar_t chBefore, wchar_t chAfter, float &wide, float &abcA, float &abcC )
{
abcA = abcC = wide = 0.0f;
// look for it in the cache
kerned_abc_cache_t finder = { ch, chBefore, chAfter };
unsigned short iKerned = m_ExtendedKernedABCWidthsCache.Find(finder);
if (m_ExtendedKernedABCWidthsCache.IsValidIndex(iKerned))
{
abcA = 0; //$ NYI. m_ExtendedKernedABCWidthsCache[iKerned].abc.abcA;
abcC = 0; //$ NYI. m_ExtendedKernedABCWidthsCache[iKerned].abc.abcC;
wide = m_ExtendedKernedABCWidthsCache[iKerned].abc.wide;
return;
}
FT_UInt glyph_index;
FT_Bool use_kerning;
FT_UInt previous;
int32_t iFxpPenX;
iFxpPenX = 0;
wide = 0;
use_kerning = FT_HAS_KERNING( m_face );
previous = chBefore;
/* convert character code to glyph index */
glyph_index = FT_Get_Char_Index( m_face, ch );
/* retrieve kerning distance and move pen position */
if ( use_kerning && previous && glyph_index )
{
FT_Vector delta;
FT_Get_Kerning( m_face, previous, glyph_index,
FT_KERNING_DEFAULT, &delta );
iFxpPenX += delta.x;
}
/* load glyph image into the slot (erase previous one) */
int error = FT_Load_Glyph( m_face, glyph_index, FT_LOAD_DEFAULT | FT_LOAD_FLAGS );
if ( error )
{
Error( "Error in FL_Load_Glyph: glyph_index:%d ch:%x error:%x\n", glyph_index, (int)ch, error );
}
FT_GlyphSlot slot = m_face->glyph;
iFxpPenX += slot->advance.x;
if ( FIXED6_2INT(iFxpPenX) > wide )
wide = FIXED6_2INT(iFxpPenX);
//$ NYI: finder.abc.abcA = abcA;
//$ NYI: finder.abc.abcC = abcC;
finder.abc.wide = wide;
m_ExtendedKernedABCWidthsCache.Insert(finder);
}
//-----------------------------------------------------------------------------
// Purpose: gets the abc widths for a character
//-----------------------------------------------------------------------------
void CLinuxFont::GetCharABCWidths(int ch, int &a, int &b, int &c)
{
Assert(IsValid());
// look for it in the cache
abc_cache_t finder = { (wchar_t)ch };
unsigned short i = m_ExtendedABCWidthsCache.Find(finder);
if (m_ExtendedABCWidthsCache.IsValidIndex(i))
{
a = m_ExtendedABCWidthsCache[i].abc.a;
b = m_ExtendedABCWidthsCache[i].abc.b;
c = m_ExtendedABCWidthsCache[i].abc.c;
return;
}
a = b = c = 0;
FT_Error error = FT_Load_Char( m_face, ch, 0 );
if ( error )
{
Msg( "Error in FT_Load_Char: ch:%x error:%x\n", ch, error );
return;
}
// width: The glyph's width.
// horiBearingX: Left side bearing for horizontal layout.
// horiAdvance: Advance width for horizontal layout.
FT_Glyph_Metrics metrics = m_face->glyph->metrics;
finder.abc.a = metrics.horiBearingX / 64 - m_iBlur - m_iOutlineSize;
finder.abc.b = metrics.width / 64 + ( ( m_iBlur + m_iOutlineSize ) * 2 ) + m_iDropShadowOffset;
finder.abc.c = ( metrics.horiAdvance - metrics.horiBearingX - metrics.width ) / 64 - m_iBlur - m_iDropShadowOffset - m_iOutlineSize;
m_ExtendedABCWidthsCache.Insert( finder );
a = finder.abc.a;
b = finder.abc.b;
c = finder.abc.c;
}
//-----------------------------------------------------------------------------
// Purpose: returns true if the font is equivalent to that specified
//-----------------------------------------------------------------------------
bool CLinuxFont::IsEqualTo(const char *windowsFontName, int tall, int weight, int blur, int scanlines, int flags)
{
if (!Q_stricmp(windowsFontName, m_szName.String() )
&& m_iTall == tall
&& m_iWeight == weight
&& m_iBlur == blur
&& m_iFlags == flags)
return true;
return false;
}
//-----------------------------------------------------------------------------
// Purpose: returns true only if this font is valid for use
//-----------------------------------------------------------------------------
bool CLinuxFont::IsValid()
{
if ( !m_szName.IsEmpty() )
return true;
return false;
}
//-----------------------------------------------------------------------------
// Purpose: returns the height of the font, in pixels
//-----------------------------------------------------------------------------
int CLinuxFont::GetHeight()
{
assert(IsValid());
return m_iHeight;
}
//-----------------------------------------------------------------------------
// Purpose: returns the requested height of the font
//-----------------------------------------------------------------------------
int CLinuxFont::GetHeightRequested()
{
assert(IsValid());
return m_iHeightRequested;
}
//-----------------------------------------------------------------------------
// Purpose: returns the ascent of the font, in pixels (ascent=units above the base line)
//-----------------------------------------------------------------------------
int CLinuxFont::GetAscent()
{
assert(IsValid());
return m_iAscent;
}
//-----------------------------------------------------------------------------
// Purpose: returns the maximum width of a character, in pixels
//-----------------------------------------------------------------------------
int CLinuxFont::GetMaxCharWidth()
{
assert(IsValid());
return m_iMaxCharWidth;
}
//-----------------------------------------------------------------------------
// Purpose: returns the flags used to make this font, used by the dynamic resizing code
//-----------------------------------------------------------------------------
int CLinuxFont::GetFlags()
{
return m_iFlags;
}
//-----------------------------------------------------------------------------
// Purpose: Comparison function for abc widths storage
//-----------------------------------------------------------------------------
bool CLinuxFont::ExtendedABCWidthsCacheLessFunc(const abc_cache_t &lhs, const abc_cache_t &rhs)
{
return lhs.wch < rhs.wch;
}
//-----------------------------------------------------------------------------
// Purpose: Comparison function for abc widths storage
//-----------------------------------------------------------------------------
bool CLinuxFont::ExtendedKernedABCWidthsCacheLessFunc(const kerned_abc_cache_t &lhs, const kerned_abc_cache_t &rhs)
{
return ( lhs.wch < rhs.wch ) ||
( lhs.wch == rhs.wch && lhs.wchBefore < rhs.wchBefore ) ||
( lhs.wch == rhs.wch && lhs.wchBefore == rhs.wchBefore && lhs.wchAfter < rhs.wchAfter );
}
void *CLinuxFont::SetAsActiveFont( void *cglContext )
{
Assert( false );
return NULL;
}
//-----------------------------------------------------------------------------
// Purpose: returns true if this font has a glyph for the code point.
//-----------------------------------------------------------------------------
bool CLinuxFont::HasChar(wchar_t wch)
{
return FT_Get_Char_Index( m_face, wch ) != 0;
}
#ifdef DBGFLAG_VALIDATE
//-----------------------------------------------------------------------------
// Purpose: Ensure that all of our internal structures are consistent, and
// account for all memory that we've allocated.
// Input: validator - Our global validator object
// pchName - Our name (typically a member var in our container)
//-----------------------------------------------------------------------------
void CLinuxFont::Validate( CValidator &validator, const char *pchName )
{
validator.Push( "CLinuxFont", this, pchName );
m_ExtendedABCWidthsCache.Validate( validator, "m_ExtendedABCWidthsCache" );
m_ExtendedKernedABCWidthsCache.Validate( validator, "m_ExtendedKernedABCWidthsCache" );
validator.Pop();
}
#endif // DBGFLAG_VALIDATE