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00024 #ifndef KLFBACKEND_H
00025 #define KLFBACKEND_H
00026
00027 #include <klfdefs.h>
00028
00029 #include <qstring.h>
00030 #include <qstringlist.h>
00031 #ifdef KLFBACKEND_QT4
00032 #include <QByteArray>
00033 #else
00034 #include <qmemarray.h>
00035 #endif
00036 #include <qimage.h>
00037 #include <qmutex.h>
00038
00039
00040
00042
00047
00048 #define KLFERR_NOERROR 0
00049
00051 #define KLFERR_MISSINGLATEXFORMULA -1
00052
00053 #define KLFERR_MISSINGMATHMODETHREEDOTS -2
00054
00055 #define KLFERR_TEXWRITEFAIL -3
00056
00057 #define KLFERR_NOLATEXPROG -4
00058
00059 #define KLFERR_LATEXNONORMALEXIT -5
00060
00061 #define KLFERR_NODVIFILE -6
00062
00063 #define KLFERR_NODVIPSPROG -7
00064
00065 #define KLFERR_DVIPSNONORMALEXIT -8
00066
00067 #define KLFERR_NOEPSFILE -9
00068
00069 #define KLFERR_EPSREADFAIL -10
00070
00071 #define KLFERR_NOEPSBBOX -11
00072
00073 #define KLFERR_BADEPSBBOX -12
00074
00075 #define KLFERR_EPSWRITEFAIL -13
00076
00077 #define KLFERR_NOEPSFILE_OF -22
00078
00079 #define KLFERR_EPSREADFAIL_OF -23
00080
00081 #define KLFERR_NOGSPROG -14
00082
00083 #define KLFERR_GSNONORMALEXIT -15
00084
00085 #define KLFERR_NOPNGFILE -16
00086
00087 #define KLFERR_PNGREADFAIL -17
00088
00089 #define KLFERR_NOEPSTOPDFPROG -18
00090
00091 #define KLFERR_EPSTOPDFNONORMALEXIT -19
00092
00093 #define KLFERR_NOPDFFILE -20
00094
00095 #define KLFERR_PDFREADFAIL -21
00096
00097
00099 #define KLFERR_PROGERR_LATEX 1
00100
00101 #define KLFERR_PROGERR_DVIPS 2
00102
00103 #define KLFERR_PROGERR_GS 3
00104
00105 #define KLFERR_PROGERR_GS_OF 5
00106
00107 #define KLFERR_PROGERR_EPSTOPDF 4
00108
00109
00110
00112
00120 class KLF_EXPORT KLFBackend
00121 {
00122 public:
00123
00125
00130 struct klfSettings {
00132 klfSettings() : tborderoffset(0), rborderoffset(0), bborderoffset(0), lborderoffset(0),
00133 outlineFonts(true), execenv() { }
00135 QString tempdir;
00137 QString latexexec;
00139 QString dvipsexec;
00141 QString gsexec;
00146 QString epstopdfexec;
00147
00151 double tborderoffset;
00155 double rborderoffset;
00159 double bborderoffset;
00163 double lborderoffset;
00164
00169 bool outlineFonts;
00170
00173 QStringList execenv;
00174 };
00175
00177
00179 struct klfInput {
00181 klfInput() : fg_color(0x00), bg_color(0xffffffff), dpi(600), bypassTemplate(false) { }
00183 QString latex;
00189 QString mathmode;
00192 QString preamble;
00195 unsigned long fg_color;
00201 unsigned long bg_color;
00204 int dpi;
00211 bool bypassTemplate;
00212 };
00213
00215
00217 struct klfOutput {
00227 int status;
00235 QString errorstr;
00236
00238 QImage result;
00239
00241 klfInput input;
00243 klfSettings settings;
00244
00249 QByteArray pngdata_raw;
00268 QByteArray pngdata;
00270 QByteArray epsdata;
00272 QByteArray pdfdata;
00273 };
00274
00328 static klfOutput getLatexFormula(const klfInput& in, const klfSettings& settings);
00329
00356 static bool saveOutputToFile(const klfOutput& output, const QString& fileName,
00357 const QString& format = QString(), QString* errorString = NULL);
00358
00364 static bool saveOutputToDevice(const klfOutput& output, QIODevice *device,
00365 const QString& format = QString("PNG"), QString* errorString = NULL);
00366
00374 static bool detectSettings(klfSettings *settings, const QString& extraPath = QString());
00375
00376
00377 private:
00378 KLFBackend();
00379
00380 friend struct cleanup_caller;
00381 static void cleanup(QString tempfname);
00382
00383 static QMutex __mutex;
00384 };
00385
00386
00388 bool KLF_EXPORT operator==(const KLFBackend::klfInput& a, const KLFBackend::klfInput& b);
00389
00390 bool KLF_EXPORT klf_detect_execenv(KLFBackend::klfSettings *settings);
00391
00392 #endif