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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
155 lines
6.0 KiB
C++
Executable File
155 lines
6.0 KiB
C++
Executable File
// Created on: 2013-01-29
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// Created by: Kirill GAVRILOV
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// Copyright (c) 2013-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _OpenGl_TextFormatter_H__
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#define _OpenGl_TextFormatter_H__
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#include <OpenGl_Font.hxx>
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#include <OpenGl_VertexBufferEditor.hxx>
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#include <Graphic3d_HorizontalTextAlignment.hxx>
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#include <Graphic3d_VerticalTextAlignment.hxx>
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#include <NCollection_String.hxx>
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typedef NCollection_Array1<OpenGl_Vec2> OpenGl_Vec2Array;
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typedef NCollection_Handle<OpenGl_Vec2Array> Handle(OpenGl_Vec2Array);
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//! This class intended to prepare formatted text.
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class OpenGl_TextFormatter : public Standard_Transient
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{
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public:
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//! Default constructor.
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Standard_EXPORT OpenGl_TextFormatter();
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//! Setup alignment style.
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Standard_EXPORT void SetupAlignment (const Graphic3d_HorizontalTextAlignment theAlignX,
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const Graphic3d_VerticalTextAlignment theAlignY);
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//! Reset current progress.
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Standard_EXPORT void Reset();
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//! Render specified text to inner buffer.
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Standard_EXPORT void Append (const Handle(OpenGl_Context)& theCtx,
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const NCollection_String& theString,
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OpenGl_Font& theFont);
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//! Perform formatting on the buffered text.
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//! Should not be called more than once after initialization!
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Standard_EXPORT void Format();
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//! Retrieve formatting results.
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Standard_EXPORT void Result (NCollection_Vector<GLuint>& theTextures,
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NCollection_Vector< NCollection_Handle <NCollection_Vector <OpenGl_Vec2> > >& theVertsPerTexture,
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NCollection_Vector< NCollection_Handle <NCollection_Vector <OpenGl_Vec2> > >& theTCrdsPerTexture) const;
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//! Retrieve formatting results.
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Standard_EXPORT void Result (const Handle(OpenGl_Context)& theCtx,
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NCollection_Vector<GLuint>& theTextures,
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NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theVertsPerTexture,
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NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theTCrdsPerTexture) const;
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//! Retrieve formatting results.
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Standard_EXPORT void Result (const Handle(OpenGl_Context)& theCtx,
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NCollection_Vector<GLuint>& theTextures,
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NCollection_Vector<Handle(OpenGl_Vec2Array)>& theVertsPerTexture,
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NCollection_Vector<Handle(OpenGl_Vec2Array)>& theTCrdsPerTexture) const;
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//! @return width of formatted text.
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inline Standard_ShortReal ResultWidth() const
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{
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return myBndWidth;
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}
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//! @return height of formatted text.
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inline Standard_ShortReal ResultHeight() const
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{
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return myLineSpacing * Standard_ShortReal(myLinesNb);
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}
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//! @param bounding box.
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inline void BndBox (Font_FTFont::Rect& theBndBox) const
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{
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theBndBox.Left = 0.0f;
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switch (myAlignX)
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{
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default:
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case Graphic3d_HTA_LEFT: theBndBox.Right = myBndWidth; break;
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case Graphic3d_HTA_RIGHT: theBndBox.Right = -myBndWidth; break;
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case Graphic3d_HTA_CENTER:
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{
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theBndBox.Left = -0.5f * myBndWidth;
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theBndBox.Right = 0.5f * myBndWidth;
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break;
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}
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}
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theBndBox.Top = myBndTop;
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theBndBox.Bottom = theBndBox.Top - myLineSpacing * Standard_ShortReal(myLinesNb);
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}
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protected: //! @name class auxiliary methods
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//! Move glyphs on the current line to correct position.
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Standard_EXPORT void newLine (const Standard_Integer theLastRect);
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protected: //! @name configuration
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Graphic3d_HorizontalTextAlignment myAlignX; //!< horizontal alignment style
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Graphic3d_VerticalTextAlignment myAlignY; //!< vertical alignment style
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Standard_Integer myTabSize; //!< horizontal tabulation width (number of space symbols)
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protected: //! @name input data
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NCollection_String myString; //!< currently rendered text
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OpenGl_Vec2 myPen; //!< current pen position
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NCollection_Vector<OpenGl_Font::Tile>
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myRects; //!< glyphs rectangles
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Standard_Integer myRectsNb; //!< rectangles number
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NCollection_Vector<Standard_ShortReal>
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myNewLines; //!< position at LF
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Standard_ShortReal myLineSpacing; //!< line spacing (computed as maximum of all fonts involved in text formatting)
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Standard_ShortReal myAscender; //!<
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bool myIsFormatted; //!< formatting state
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protected:
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mutable OpenGl_VertexBufferEditor<OpenGl_Vec2> myVboEditor;
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protected: //! @name temporary variables for formatting routines
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Standard_Integer myLinesNb; //!< overall (new)lines number (including splitting by width limit)
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Standard_Integer myRectLineStart; //!< id of first rectangle on the current line
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Standard_Integer myRectWordStart; //!< id of first rectangle in the current word
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Standard_Integer myNewLineNb;
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Standard_ShortReal myPenCurrLine; //!< current baseline position
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Standard_ShortReal myLineLeft; //!< left x position of first glyph on line before formatting applied
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Standard_ShortReal myLineTail;
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Standard_ShortReal myBndTop;
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Standard_ShortReal myBndWidth;
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OpenGl_Vec2 myMoveVec; //!< local variable
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public:
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DEFINE_STANDARD_RTTI(OpenGl_TextFormatter) // Type definition
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};
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DEFINE_STANDARD_HANDLE(OpenGl_TextFormatter, Standard_Transient)
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#endif // _OpenGl_TextFormatter_H__
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