moved wxMGL's font management code to common so that it can be reused by wxDFB; implemented wxDFB part

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43550 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-11-20 20:45:57 +00:00
parent 9e1fc0e428
commit d7ae4a6264
22 changed files with 1293 additions and 467 deletions
--- a/src/mgl/fontmgr.cpp
+++ b/src/mgl/fontmgr.cpp
@@ -0,0 +1,169 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        src/mgl/fontmgr.cpp
+// Purpose:     font management for wxMGL
+// Author:      Vaclav Slavik
+// Created:     2006-11-18
+// RCS-ID:      $Id$
+// Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
+//              (c) 2006 REA Elektronik GmbH
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#include "wx/private/fontmgr.h"
+#include "wx/sysopt.h"
+
+#include <mgraph.h>
+
+static int gs_antialiasingThreshold = -1;
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxFontInstance
+// ----------------------------------------------------------------------------
+
+wxFontInstance::wxFontInstance(float ptSize, bool aa, font_lib_t *fontLib)
+    : wxFontInstanceBase(ptSize, aa)
+{
+    m_font = MGL_loadFontInstance(fontLib, ptSize, 0.0, 0.0, aa);
+
+    wxASSERT_MSG( m_font, _T("cannot create font instance") );
+}
+
+wxFontInstance::~wxFontInstance()
+{
+    if ( m_font )
+        MGL_unloadFontInstance(m_font);
+}
+
+// ----------------------------------------------------------------------------
+// wxFontFace
+// ----------------------------------------------------------------------------
+
+void wxFontFace::Acquire()
+{
+    wxFontFaceBase::Acquire();
+
+    if ( m_refCnt == 1 )
+    {
+        wxCHECK_RET( m_fontLib == NULL, _T("font lib already created") );
+
+        wxLogTrace("mgl_font", "opening library '%s'", m_fileName.mb_str());
+        m_fontLib = MGL_openFontLib(m_fileName.fn_str());
+    }
+}
+
+void wxFontFace::Release()
+{
+    wxFontFaceBase::Release();
+
+    if ( m_refCnt == 0 )
+    {
+        wxCHECK_RET( m_fontLib != NULL, _T("font lib not created") );
+
+        wxLogTrace("mgl_font", "closing library '%s'", m_fileName.mb_str());
+        MGL_closeFontLib(m_fontLib);
+        m_fontLib = NULL;
+    }
+}
+
+wxFontInstance *wxFontFace::GetFontInstance(float ptSize, bool aa)
+{
+    if ( gs_antialiasingThreshold == -1 )
+    {
+        gs_antialiasingThreshold = 10;
+#if wxUSE_SYSTEM_OPTIONS
+        if ( wxSystemOptions::HasOption(wxT("mgl.aa-threshold")) )
+            gs_antialiasingThreshold =
+                wxSystemOptions::GetOptionInt(wxT("mgl.aa-threshold"));
+        wxLogTrace("mgl_font", "AA threshold set to %i", gs_antialiasingThreshold);
+#endif
+    }
+
+    // Small characters don't look good when antialiased with the algorithm
+    // that FreeType uses (mere 2x2 supersampling), so lets disable AA
+    // completely for small fonts. Bitmap fonts are not antialiased either.
+    if ( ptSize <= gs_antialiasingThreshold ||
+         m_fontLib->fontLibType == MGL_BITMAPFONT_LIB )
+    {
+        aa = false;
+    }
+
+    return wxFontFaceBase::GetFontInstance(ptSize, aa);
+}
+
+wxFontInstance *wxFontFace::CreateFontInstance(float ptSize, bool aa)
+{
+    wxASSERT_MSG( m_fontLib, _T("font library not loaded!") );
+
+    return new wxFontInstance(ptSize, aa, m_fontLib);
+}
+
+// ----------------------------------------------------------------------------
+// wxFontBundle
+// ----------------------------------------------------------------------------
+
+wxFontBundle::wxFontBundle(const font_info_t *info)
+    : m_fontInfo(info)
+{
+    if ( info->regularFace[0] != '\0' )
+        m_faces[FaceType_Regular] = new wxFontFace(info->regularFace);
+
+    if ( info->italicFace[0] != '\0' )
+        m_faces[FaceType_Italic] = new wxFontFace(info->italicFace);
+
+    if ( info->boldFace[0] != '\0' )
+        m_faces[FaceType_Bold] = new wxFontFace(info->boldFace);
+
+    if ( info->boldItalicFace[0] != '\0' )
+        m_faces[FaceType_BoldItalic] = new wxFontFace(info->boldItalicFace);
+
+    wxLogTrace("mgl_font", "new family '%s' (r=%s, i=%s, b=%s, bi=%s)\n",
+               info->familyName, info->regularFace, info->italicFace,
+               info->boldFace, info->boldItalicFace);
+}
+
+// ----------------------------------------------------------------------------
+// wxFontsManager
+// ----------------------------------------------------------------------------
+
+wxString wxFontsManager::GetDefaultFacename(wxFontFamily family) const
+{
+    switch ( family )
+    {
+        case wxSCRIPT:
+            return _T("Script");
+        case wxDECORATIVE:
+            return _T("Charter");
+        case wxROMAN:
+            return _T("Times");
+        case wxTELETYPE:
+        case wxMODERN:
+            return _T("Courier");
+        case wxSWISS:
+        case wxDEFAULT:
+        default:
+            return wxT("Helvetica");
+    }
+}
+
+static ibool MGLAPI enum_callback(const font_info_t *info, void *cookie)
+{
+    wxFontsManager *db = (wxFontsManager*)cookie;
+    db->AddBundle(new wxFontBundle(info));
+    return TRUE;
+}
+
+void wxFontsManager::AddAllFonts()
+{
+    MGL_enumerateFonts(enum_callback, (void*)this);
+}