+
+bool wxDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
+{
+ wxCHECK_MSG(Ok(), false, wxT("Invalid DC"));
+
+ widths.Empty();
+ widths.Add(0, text.Length());
+
+ if (text.Length() == 0)
+ return false;
+
+ wxMacFastPortSetter helper(this) ;
+ MacInstallFont() ;
+#if TARGET_CARBON
+ bool useGetThemeText = ( GetThemeTextDimensions != (void*) kUnresolvedCFragSymbolAddress ) ;
+ if ( UMAGetSystemVersion() < 0x1000 || IsKindOf(CLASSINFO( wxPrinterDC ) ) || ((wxFont*)&m_font)->GetNoAntiAliasing() )
+ useGetThemeText = false ;
+
+ if ( useGetThemeText )
+ {
+ // If anybody knows how to do this more efficiently yet still handle
+ // the fractional glyph widths that may be present when using AA
+ // fonts, please change it. Currently it is measuring from the
+ // begining of the string for each succeding substring, which is much
+ // slower than this should be.
+ for (size_t i=0; i<text.Length(); i++)
+ {
+ wxString str(text.Left(i+1));
+ Point bounds = {0,0};
+ SInt16 baseline ;
+ wxMacCFStringHolder mString(str, m_font.GetEncoding());
+ ::GetThemeTextDimensions( mString,
+ kThemeCurrentPortFont,
+ kThemeStateActive,
+ false,
+ &bounds,
+ &baseline );
+ widths[i] = XDEV2LOGREL(bounds.h);
+ }
+ }
+ else
+#endif
+ {
+ wxCharBuffer buff = text.mb_str(wxConvLocal);
+ size_t len = strlen(buff);
+ short* measurements = new short[len+1];
+ MeasureText(len, buff.data(), measurements);
+
+ // Copy to widths, starting at measurements[1]
+ // NOTE: this doesn't take into account any multi-byte characters
+ // in buff, it probabkly should...
+ for (size_t i=0; i<text.Length(); i++)
+ widths[i] = XDEV2LOGREL(measurements[i+1]);
+
+ delete [] measurements;
+ }
+
+ return true;
+}
+
+
+
projects / wxWidgets.git / blobdiff