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e97f20a0f2bcff6b144b8ab81c73c1d412361864
wxWidgets/src/motif/font.cpp
Julian Smart e97f20a0f2 wxMotif: wxWindow/Client/PaintDC starting to work. 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@769 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-09-23 13:56:00 +00:00

355 lines
8.0 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
// Name: font.cpp
// Purpose: wxFont class
// Author: Julian Smart
// Modified by:
// Created: 17/09/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "font.h"
#endif
#include "wx/defs.h"
#include "wx/string.h"
#include "wx/font.h"
#include "wx/gdicmn.h"
#include "wx/utils.h"
#include <X11/Xlib.h>
#if !USE_SHARED_LIBRARIES
IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
#endif
wxFontRefData::wxFontRefData(): m_fontsByScale(wxKEY_INTEGER)
{
m_style = 0;
m_pointSize = 0;
m_family = 0;
m_style = 0;
m_weight = 0;
m_underlined = 0;
m_faceName = "";
}
wxFontRefData::wxFontRefData(const wxFontRefData& data): m_fontsByScale(wxKEY_INTEGER)
{
m_style = data.m_style;
m_pointSize = data.m_pointSize;
m_family = data.m_family;
m_style = data.m_style;
m_weight = data.m_weight;
m_underlined = data.m_underlined;
m_faceName = data.m_faceName;
// Don't have to copy actual fonts, because they'll be created
// on demand.
}
wxFontRefData::~wxFontRefData()
{
wxNode* node = m_fontsByScale.First();
while (node)
{
XFontStruct* fontStruct = (XFontStruct*) node->Data();
// TODO: why does freeing the font produce a segv???
// Commenting it out will result in memory leaks, and
// maybe X resource problems, who knows...
// XFreeFont((Display*) wxGetDisplay, fontStruct);
node = node->Next();
}
m_fontsByScale.Clear();
}
wxFont::wxFont()
{
if ( wxTheFontList )
wxTheFontList->Append(this);
}
wxFont::wxFont(int pointSize, int family, int style, int weight, bool underlined, const wxString& faceName)
{
Create(pointSize, family, style, weight, underlined, faceName);
if ( wxTheFontList )
wxTheFontList->Append(this);
}
bool wxFont::Create(int pointSize, int family, int style, int weight, bool underlined, const wxString& faceName)
{
UnRef();
m_refData = new wxFontRefData;
M_FONTDATA->m_family = family;
M_FONTDATA->m_style = style;
M_FONTDATA->m_weight = weight;
M_FONTDATA->m_pointSize = pointSize;
M_FONTDATA->m_underlined = underlined;
M_FONTDATA->m_faceName = faceName;
RealizeResource();
return TRUE;
}
wxFont::~wxFont()
{
if (wxTheFontList)
wxTheFontList->DeleteObject(this);
}
bool wxFont::RealizeResource()
{
// TODO: create the font (if there is a native font object)
return FALSE;
}
void wxFont::Unshare()
{
// Don't change shared data
if (!m_refData)
{
m_refData = new wxFontRefData();
}
else
{
wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
UnRef();
m_refData = ref;
}
}
void wxFont::SetPointSize(int pointSize)
{
Unshare();
M_FONTDATA->m_pointSize = pointSize;
RealizeResource();
}
void wxFont::SetFamily(int family)
{
Unshare();
M_FONTDATA->m_family = family;
RealizeResource();
}
void wxFont::SetStyle(int style)
{
Unshare();
M_FONTDATA->m_style = style;
RealizeResource();
}
void wxFont::SetWeight(int weight)
{
Unshare();
M_FONTDATA->m_weight = weight;
RealizeResource();
}
void wxFont::SetFaceName(const wxString& faceName)
{
Unshare();
M_FONTDATA->m_faceName = faceName;
RealizeResource();
}
void wxFont::SetUnderlined(bool underlined)
{
Unshare();
M_FONTDATA->m_underlined = underlined;
RealizeResource();
}
wxString wxFont::GetFamilyString() const
{
wxString fam("");
switch (GetFamily())
{
case wxDECORATIVE:
fam = "wxDECORATIVE";
break;
case wxROMAN:
fam = "wxROMAN";
break;
case wxSCRIPT:
fam = "wxSCRIPT";
break;
case wxSWISS:
fam = "wxSWISS";
break;
case wxMODERN:
fam = "wxMODERN";
break;
case wxTELETYPE:
fam = "wxTELETYPE";
break;
default:
fam = "wxDEFAULT";
break;
}
return fam;
}
/* New font system */
wxString wxFont::GetFaceName() const
{
wxString str("");
if (M_FONTDATA)
str = M_FONTDATA->m_faceName ;
return str;
}
wxString wxFont::GetStyleString() const
{
wxString styl("");
switch (GetStyle())
{
case wxITALIC:
styl = "wxITALIC";
break;
case wxSLANT:
styl = "wxSLANT";
break;
default:
styl = "wxNORMAL";
break;
}
return styl;
}
wxString wxFont::GetWeightString() const
{
wxString w("");
switch (GetWeight())
{
case wxBOLD:
w = "wxBOLD";
break;
case wxLIGHT:
w = "wxLIGHT";
break;
default:
w = "wxNORMAL";
break;
}
return w;
}
// Find an existing, or create a new, XFontStruct
// based on this wxFont and the given scale. Append the
// font to list in the private data for future reference.
WXFontStructPtr wxFont::FindOrCreateFontStruct(double scale)
{
if (!Ok())
return NULL;
long intScale = long(scale * 100.0 + 0.5); // key for fontlist
int pointSize = (M_FONTDATA->m_pointSize * 10 * intScale) / 100;
wxNode* node = M_FONTDATA->m_fontsByScale.Find(intScale);
if (node)
{
return (WXFontStructPtr) node->Data();
}
WXFontStructPtr font = LoadQueryFont(pointSize, M_FONTDATA->m_family,
M_FONTDATA->m_style, M_FONTDATA->m_weight, M_FONTDATA->m_underlined);
if (!font)
{
// search up and down by stepsize 10
int max_size = pointSize + 20 * (1 + (pointSize/180));
int min_size = pointSize - 20 * (1 + (pointSize/180));
int i;
// Search for smaller size (approx.)
for (i=pointSize-10; !font && i >= 10 && i >= min_size; i -= 10)
font = LoadQueryFont(i, M_FONTDATA->m_family, M_FONTDATA->m_style, M_FONTDATA->m_weight, M_FONTDATA->m_underlined);
// Search for larger size (approx.)
for (i=pointSize+10; !font && i <= max_size; i += 10)
font = LoadQueryFont(i, M_FONTDATA->m_family, M_FONTDATA->m_style, M_FONTDATA->m_weight, M_FONTDATA->m_underlined);
// Try default family
if (!font && M_FONTDATA->m_family != wxDEFAULT)
font = LoadQueryFont(pointSize, wxDEFAULT, M_FONTDATA->m_style,
M_FONTDATA->m_weight, M_FONTDATA->m_underlined);
// Bogus font
if (!font)
font = LoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
M_FONTDATA->m_underlined);
wxASSERT_MSG( (font != (XFontStruct*) NULL), "Could not allocate even a default font -- something is wrong." );
}
if (font)
{
M_FONTDATA->m_fontsByScale.Append(intScale, (wxObject*) font);
return (WXFontStructPtr) font;
}
return font;
}
WXFontStructPtr wxFont::LoadQueryFont(int pointSize, int family, int style,
int weight, bool underlined)
{
char *xfamily;
char *xstyle;
char *xweight;
switch (family)
{
case wxDECORATIVE: xfamily = "lucida";
break;
case wxROMAN: xfamily = "times";
break;
case wxMODERN: xfamily = "courier";
break;
case wxSWISS: xfamily = "lucida";
break;
case wxDEFAULT:
default: xfamily = "*";
}
switch (style)
{
case wxITALIC: xstyle = "i";
break;
case wxSLANT: xstyle = "o";
break;
case wxNORMAL: xstyle = "r";
break;
default: xstyle = "*";
break;
}
switch (weight)
{
case wxBOLD: xweight = "bold";
break;
case wxLIGHT:
case wxNORMAL: xweight = "medium";
break;
default: xweight = "*";
break;
}
sprintf(wxBuffer, "-*-%s-%s-%s-normal-*-*-%d-*-*-*-*-*-*",
xfamily, xweight, xstyle, pointSize);
Display *dpy = (Display*) wxGetDisplay();
XFontStruct* font = XLoadQueryFont(dpy, wxBuffer);
return (WXFontStructPtr) font;
}
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