//======================================================================== // // XPDFCore.h // // Copyright 2002-2003 Glyph & Cog, LLC // Copyright 2025-2026 Adam Sampson // //======================================================================== #ifndef XPDFCORE_H #define XPDFCORE_H #include #include #include #include #define Object XtObject #include #undef INVALID #undef Object #include #include "config.h" #include "PDFCore.h" class LinkAction; //------------------------------------------------------------------------ #define xMaxRGBCube 6 // max size of RGB color cube //------------------------------------------------------------------------ // callbacks //------------------------------------------------------------------------ typedef void (*XPDFUpdateCbk)(void *data, const std::string& fileName, int pageNum, int numPages, const char *linkString); typedef void (*XPDFActionCbk)(void *data, const char *action); typedef void (*XPDFKeyPressCbk)(void *data, KeySym key, unsigned int modifiers, XEvent *event); typedef void (*XPDFMouseCbk)(void *data, XEvent *event); //------------------------------------------------------------------------ // XPDFCore //------------------------------------------------------------------------ class XPDFCore: public PDFCore { public: // Create viewer core inside . XPDFCore(Widget shellA, Widget parentWidgetA, SplashColorPtr paperColorA, unsigned long paperPixelA, unsigned long mattePixelA, bool fullScreenA, bool reverseVideoA, bool installCmap, int rgbCubeSizeA); ~XPDFCore(); //----- loadFile / displayPage / displayDest // Load a new file. Returns pdfOk or error code. virtual int loadFile(const std::string& fileName, const std::string *ownerPassword = NULL, const std::string *userPassword = NULL); // Load an already-created PDFDoc object. virtual void loadDoc(std::unique_ptr docA); // Resize the window to fit page of the current document. void resizeToPage(int pg); // Update the display, given the specified parameters. virtual void update(int topPageA, int scrollXA, int scrollYA, double zoomA, int rotateA, bool force, bool addToHist, bool adjustScrollX); //----- page/position changes virtual bool gotoNextPage(int inc, bool top); virtual bool gotoPrevPage(int dec, bool top, bool bottom); virtual bool goForward(); virtual bool goBackward(); void startPan(int wx, int wy); void endPan(int wx, int wy); //----- selection void startSelection(int wx, int wy); void endSelection(int wx, int wy); void copySelection(); //----- hyperlinks void doAction(PCONST LinkAction *action); LinkAction *getLinkAction() { return linkAction; } std::string mungeURL(const std::string &url); //----- find virtual bool find(const char *s, bool caseSensitive, bool next, bool backward, bool wholeWord, bool onePageOnly); virtual bool findU(Unicode *u, int len, bool caseSensitive, bool next, bool backward, bool wholeWord, bool onePageOnly); //----- simple modal dialogs bool doQuestionDialog(const std::string& title, const std::string& msg); void doInfoDialog(const std::string& title, const std::string& msg); void doErrorDialog(const std::string& title, const std::string& msg); //----- password dialog virtual std::unique_ptr getPassword(); //----- misc access Widget getWidget() { return scrolledWin; } Widget getDrawAreaWidget() { return drawArea; } virtual void setBusyCursor(bool busy); Cursor getBusyCursor() { return busyCursor; } void takeFocus(); void enableHyperlinks(bool on) { hyperlinksEnabled = on; } bool getHyperlinksEnabled() { return hyperlinksEnabled; } void enableSelect(bool on) { selectEnabled = on; } void setUpdateCbk(XPDFUpdateCbk cbk, void *data) { updateCbk = cbk; updateCbkData = data; } void setActionCbk(XPDFActionCbk cbk, void *data) { actionCbk = cbk; actionCbkData = data; } void setKeyPressCbk(XPDFKeyPressCbk cbk, void *data) { keyPressCbk = cbk; keyPressCbkData = data; } void setMouseCbk(XPDFMouseCbk cbk, void *data) { mouseCbk = cbk; mouseCbkData = data; } bool getFullScreen() { return fullScreen; } private: virtual bool checkForNewFile(); //----- hyperlinks std::string getLinkAbsolutePath(const std::string& relPath); void runCommand(const std::string& cmdFmt, const std::string& arg); //----- selection static Boolean convertSelectionCbk(Widget widget, Atom *selection, Atom *target, Atom *type, XtPointer *value, unsigned long *length, int *format); //----- GUI code void setupX(bool installCmap, int rgbCubeSizeA); void initWindow(); static void hScrollChangeCbk(Widget widget, XtPointer ptr, XtPointer callData); static void hScrollDragCbk(Widget widget, XtPointer ptr, XtPointer callData); static void vScrollChangeCbk(Widget widget, XtPointer ptr, XtPointer callData); static void vScrollDragCbk(Widget widget, XtPointer ptr, XtPointer callData); static void resizeCbk(Widget widget, XtPointer ptr, XtPointer callData); static void redrawCbk(Widget widget, XtPointer ptr, XtPointer callData); static void inputCbk(Widget widget, XtPointer ptr, XtPointer callData); virtual std::unique_ptr newTile(int xDestA, int yDestA); virtual void updateTileData(PDFCoreTile *tileA, int xSrc, int ySrc, int width, int height, bool composited); virtual void redrawRect(PDFCoreTile *tileA, int xSrc, int ySrc, int xDest, int yDest, int width, int height, bool composited); virtual void updateScrollbars(); void setCursor(Cursor cursor); bool doDialog(int type, bool hasCancel, const std::string& title, const std::string& msg); static void dialogOkCbk(Widget widget, XtPointer ptr, XtPointer callData); static void dialogCancelCbk(Widget widget, XtPointer ptr, XtPointer callData); void initPasswordDialog(); static void passwordTextVerifyCbk(Widget widget, XtPointer ptr, XtPointer callData); static void passwordOkCbk(Widget widget, XtPointer ptr, XtPointer callData); static void passwordCancelCbk(Widget widget, XtPointer ptr, XtPointer callData); unsigned long paperPixel; unsigned long mattePixel; //~unimp: move fullScreen into PDFCore? bool fullScreen; Display *display; int screenNum; Visual *visual; Colormap colormap; unsigned int depth; // visual depth bool trueColor; // set if using a TrueColor visual int rDiv, gDiv, bDiv; // RGB right shifts (for TrueColor) int rShift, gShift, bShift; // RGB left shifts (for TrueColor) int rgbCubeSize; // size of color cube (for non-TrueColor) unsigned long // color cube (for non-TrueColor) colors[xMaxRGBCube * xMaxRGBCube * xMaxRGBCube]; Widget shell; // top-level shell containing the widget Widget parentWidget; // parent widget (not created by XPDFCore) Widget scrolledWin; Widget hScrollBar; Widget vScrollBar; Widget drawAreaFrame; Widget drawArea; Cursor busyCursor, linkCursor, selectCursor; Cursor currentCursor; GC drawAreaGC; // GC for blitting into drawArea static std::string currentSelection; // selected text static Atom targetsAtom; static Atom textAtom; static Atom compoundtextAtom; static Atom utf8stringAtom; bool panning; int panMX, panMY; time_t modTime; // last modification time of PDF file LinkAction *linkAction; // mouse cursor is over this link XPDFUpdateCbk updateCbk; void *updateCbkData; XPDFActionCbk actionCbk; void *actionCbkData; XPDFKeyPressCbk keyPressCbk; void *keyPressCbkData; XPDFMouseCbk mouseCbk; void *mouseCbkData; bool hyperlinksEnabled; bool selectEnabled; int dialogDone; Widget passwordDialog; Widget passwordText; std::unique_ptr password; }; #endif