// Created on: 2013-01-28
// Created by: Kirill GAVRILOV
-// Copyright (c) 2013 OPEN CASCADE SAS
+// Copyright (c) 2013-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
-// This library is free software; you can redistribute it and / or modify it
-// under the terms of the GNU Lesser General Public version 2.1 as published
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
// commercial license or contractual agreement.
#include <Font_FTFont.hxx>
+
+#include <Font_FTLibrary.hxx>
#include <Font_FontMgr.hxx>
-#include <TCollection_AsciiString.hxx>
-#include <TCollection_HAsciiString.hxx>
+#include <Font_TextFormatter.hxx>
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
-IMPLEMENT_STANDARD_HANDLE (Font_FTFont, Standard_Transient)
-IMPLEMENT_STANDARD_RTTIEXT(Font_FTFont, Standard_Transient)
+IMPLEMENT_STANDARD_RTTIEXT(Font_FTFont,Standard_Transient)
// =======================================================================
// function : Font_FTFont
// purpose :
// =======================================================================
Font_FTFont::Font_FTFont (const Handle(Font_FTLibrary)& theFTLib)
-: myFTLib (theFTLib),
- myFTFace (NULL),
- myPointSize (0),
- myUChar (0)
+: myFTLib (theFTLib),
+ myFTFace (NULL),
+ myPointSize (0U),
+ myWidthScaling(1.0),
+ myLoadFlags (FT_LOAD_NO_HINTING | FT_LOAD_TARGET_NORMAL),
+ myIsSingleLine(false),
+ myUChar (0U)
{
if (myFTLib.IsNull())
{
}
// =======================================================================
-// function : Font_FTFont
+// function : Release
// purpose :
// =======================================================================
void Font_FTFont::Release()
myPointSize = thePointSize;
if (!myFTLib->IsValid())
{
- std::cerr << "FreeType library is unavailable!\n";
+ //std::cerr << "FreeType library is unavailable!\n";
Release();
return false;
}
const unsigned int theResolution)
{
Handle(Font_FontMgr) aFontMgr = Font_FontMgr::GetInstance();
- const Handle(TCollection_HAsciiString) aFontName = new TCollection_HAsciiString (theFontName.ToCString());
- Handle(Font_SystemFont) aRequestedFont = aFontMgr->FindFont (aFontName, theFontAspect, thePointSize);
- return !aRequestedFont.IsNull()
- && Font_FTFont::Init (aRequestedFont->FontPath()->ToCString(), thePointSize, theResolution);
+ const TCollection_AsciiString aFontName (theFontName.ToCString());
+ Font_FontAspect aFontAspect = theFontAspect;
+ if (Handle(Font_SystemFont) aRequestedFont = aFontMgr->FindFont (aFontName, aFontAspect))
+ {
+ myIsSingleLine = aRequestedFont->IsSingleStrokeFont();
+ return Font_FTFont::Init (aRequestedFont->FontPathAny (aFontAspect).ToCString(), thePointSize, theResolution);
+ }
+ return false;
}
// =======================================================================
{
if (myUChar == theUChar)
{
- return true;
+ return myUChar != 0;
}
myGlyphImg.Clear();
myUChar = 0;
if (theUChar == 0
- || FT_Load_Char (myFTFace, theUChar, FT_LOAD_TARGET_NORMAL) != 0
+ || FT_Load_Char (myFTFace, theUChar, FT_Int32(myLoadFlags)) != 0
|| myFTFace->glyph == NULL)
{
return false;
myGlyphImg.Clear();
myUChar = 0;
if (theUChar == 0
- || FT_Load_Char (myFTFace, theUChar, FT_LOAD_RENDER | FT_LOAD_NO_HINTING | FT_LOAD_TARGET_NORMAL) != 0
+ || FT_Load_Char (myFTFace, theUChar, FT_Int32(myLoadFlags | FT_LOAD_RENDER)) != 0
|| myFTFace->glyph == NULL
|| myFTFace->glyph->format != FT_GLYPH_FORMAT_BITMAP)
{
FT_Bitmap aBitmap = myFTFace->glyph->bitmap;
if (aBitmap.pixel_mode != FT_PIXEL_MODE_GRAY
- || aBitmap.buffer == NULL || aBitmap.width <= 0 || aBitmap.rows <= 0)
+ || aBitmap.buffer == NULL || aBitmap.width == 0 || aBitmap.rows == 0)
{
return false;
}
- if (!myGlyphImg.InitWrapper (Image_PixMap::ImgGray, aBitmap.buffer,
+ if (!myGlyphImg.InitWrapper (Image_Format_Alpha, aBitmap.buffer,
aBitmap.width, aBitmap.rows, Abs (aBitmap.pitch)))
{
return false;
return (unsigned int)(aHeight + 0.5f);
}
+// =======================================================================
+// function : Ascender
+// purpose :
+// =======================================================================
+float Font_FTFont::Ascender() const
+{
+ return float(myFTFace->ascender) * (float(myFTFace->size->metrics.y_ppem) / float(myFTFace->units_per_EM));
+}
+
+// =======================================================================
+// function : Descender
+// purpose :
+// =======================================================================
+float Font_FTFont::Descender() const
+{
+ return float(myFTFace->descender) * (float(myFTFace->size->metrics.y_ppem) / float(myFTFace->units_per_EM));
+}
+
+// =======================================================================
+// function : LineSpacing
+// purpose :
+// =======================================================================
+float Font_FTFont::LineSpacing() const
+{
+ return float(myFTFace->height) * (float(myFTFace->size->metrics.y_ppem) / float(myFTFace->units_per_EM));
+}
+
// =======================================================================
// function : AdvanceX
// purpose :
// =======================================================================
-float Font_FTFont::AdvanceX (const Standard_Utf32Char theUChar,
- const Standard_Utf32Char theUCharNext)
+float Font_FTFont::AdvanceX (Standard_Utf32Char theUChar,
+ Standard_Utf32Char theUCharNext)
{
loadGlyph (theUChar);
return AdvanceX (theUCharNext);
// function : AdvanceY
// purpose :
// =======================================================================
-float Font_FTFont::AdvanceY (const Standard_Utf32Char theUChar,
- const Standard_Utf32Char theUCharNext)
+float Font_FTFont::AdvanceY (Standard_Utf32Char theUChar,
+ Standard_Utf32Char theUCharNext)
{
loadGlyph (theUChar);
return AdvanceY (theUCharNext);
}
+bool Font_FTFont::getKerning (FT_Vector& theKern,
+ Standard_Utf32Char theUCharCurr,
+ Standard_Utf32Char theUCharNext) const
+{
+ theKern.x = 0;
+ theKern.y = 0;
+ if (theUCharNext != 0 && FT_HAS_KERNING(myFTFace) != 0)
+ {
+ const FT_UInt aCharCurr = FT_Get_Char_Index (myFTFace, theUCharCurr);
+ const FT_UInt aCharNext = FT_Get_Char_Index (myFTFace, theUCharNext);
+ if (aCharCurr == 0 || aCharNext == 0
+ || FT_Get_Kerning (myFTFace, aCharCurr, aCharNext, FT_KERNING_UNFITTED, &theKern) != 0)
+ {
+ theKern.x = 0;
+ theKern.y = 0;
+ return false;
+ }
+ return true;
+ }
+ return false;
+}
+
// =======================================================================
// function : AdvanceX
// purpose :
// =======================================================================
-float Font_FTFont::AdvanceX (const Standard_Utf32Char theUCharNext)
+float Font_FTFont::AdvanceX (Standard_Utf32Char theUCharNext) const
{
if (myUChar == 0)
{
return 0.0f;
}
- if (FT_HAS_KERNING (myFTFace) == 0 || theUCharNext == 0
- || FT_Get_Kerning (myFTFace, myUChar, theUCharNext, FT_KERNING_UNFITTED, &myKernAdvance) != 0)
- {
- return fromFTPoints<float> (myFTFace->glyph->advance.x);
- }
- return fromFTPoints<float> (myKernAdvance.x + myFTFace->glyph->advance.x);
+ FT_Vector aKern;
+ getKerning (aKern, myUChar, theUCharNext);
+ return myWidthScaling * fromFTPoints<float> (myFTFace->glyph->advance.x + aKern.x);
}
// =======================================================================
// function : AdvanceY
// purpose :
// =======================================================================
-float Font_FTFont::AdvanceY (const Standard_Utf32Char theUCharNext)
+float Font_FTFont::AdvanceY (Standard_Utf32Char theUCharNext) const
{
if (myUChar == 0)
{
return 0.0f;
}
- if (FT_HAS_KERNING (myFTFace) == 0 || theUCharNext == 0
- || FT_Get_Kerning (myFTFace, myUChar, theUCharNext, FT_KERNING_UNFITTED, &myKernAdvance) != 0)
- {
- return fromFTPoints<float> (myFTFace->glyph->advance.y);
- }
- return fromFTPoints<float> (myKernAdvance.y + myFTFace->glyph->advance.y);
+ FT_Vector aKern;
+ getKerning (aKern, myUChar, theUCharNext);
+ return fromFTPoints<float> (myFTFace->glyph->advance.y + aKern.y);
+}
+
+// =======================================================================
+// function : GlyphsNumber
+// purpose :
+// =======================================================================
+Standard_Integer Font_FTFont::GlyphsNumber() const
+{
+ return myFTFace->num_glyphs;
+}
+
+// =======================================================================
+// function : theRect
+// purpose :
+// =======================================================================
+void Font_FTFont::GlyphRect (Font_Rect& theRect) const
+{
+ const FT_Bitmap& aBitmap = myFTFace->glyph->bitmap;
+ theRect.Left = float(myFTFace->glyph->bitmap_left);
+ theRect.Top = float(myFTFace->glyph->bitmap_top);
+ theRect.Right = float(myFTFace->glyph->bitmap_left + (int )aBitmap.width);
+ theRect.Bottom = float(myFTFace->glyph->bitmap_top - (int )aBitmap.rows);
+}
+
+// =======================================================================
+// function : BoundingBox
+// purpose :
+// =======================================================================
+Font_Rect Font_FTFont::BoundingBox (const NCollection_String& theString,
+ const Graphic3d_HorizontalTextAlignment theAlignX,
+ const Graphic3d_VerticalTextAlignment theAlignY)
+{
+ Font_TextFormatter aFormatter;
+ aFormatter.SetupAlignment (theAlignX, theAlignY);
+ aFormatter.Reset();
+
+ aFormatter.Append (theString, *this);
+ aFormatter.Format();
+
+ Font_Rect aBndBox;
+ aFormatter.BndBox (aBndBox);
+ return aBndBox;
}
projects / occt.git / blobdiff