xpdf-no-select-disableHEADmaster

1 files changed, 453 insertions, 0 deletions

diff --git a/xpdf/Link.h b/xpdf/Link.h
new file mode 100644
index 0000000..480496a
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+++ b/xpdf/Link.h
@@ -0,0 +1,453 @@
+//========================================================================
+//
+// Link.h
+//
+// Copyright 1996-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef LINK_H
+#define LINK_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "Object.h"
+
+class GString;
+class Array;
+class Dict;
+
+//------------------------------------------------------------------------
+// LinkAction
+//------------------------------------------------------------------------
+
+enum LinkActionKind {
+  actionGoTo,			// go to destination
+  actionGoToR,			// go to destination in new file
+  actionLaunch,			// launch app (or open document)
+  actionURI,			// URI
+  actionNamed,			// named action
+  actionMovie,			// movie action
+  actionJavaScript,		// run JavaScript
+  actionSubmitForm,		// submit form
+  actionHide,			// hide annotation
+  actionUnknown			// anything else
+};
+
+class LinkAction {
+public:
+
+  // Destructor.
+  virtual ~LinkAction() {}
+
+  // Was the LinkAction created successfully?
+  virtual GBool isOk() = 0;
+
+  // Check link action type.
+  virtual LinkActionKind getKind() = 0;
+
+  // Parse a destination (old-style action) name, string, or array.
+  static LinkAction *parseDest(Object *obj);
+
+  // Parse an action dictionary.
+  static LinkAction *parseAction(Object *obj, GString *baseURI = NULL);
+
+  // Extract a file name from a file specification (string or
+  // dictionary).
+  static GString *getFileSpecName(Object *fileSpecObj);
+};
+
+//------------------------------------------------------------------------
+// LinkDest
+//------------------------------------------------------------------------
+
+enum LinkDestKind {
+  destXYZ,
+  destFit,
+  destFitH,
+  destFitV,
+  destFitR,
+  destFitB,
+  destFitBH,
+  destFitBV
+};
+
+class LinkDest {
+public:
+
+  // Build a LinkDest from the array.
+  LinkDest(Array *a);
+
+  // Copy a LinkDest.
+  LinkDest *copy() { return new LinkDest(this); }
+
+  // Was the LinkDest created successfully?
+  GBool isOk() { return ok; }
+
+  // Accessors.
+  LinkDestKind getKind() { return kind; }
+  GBool isPageRef() { return pageIsRef; }
+  int getPageNum() { return pageNum; }
+  Ref getPageRef() { return pageRef; }
+  double getLeft() { return left; }
+  double getBottom() { return bottom; }
+  double getRight() { return right; }
+  double getTop() { return top; }
+  double getZoom() { return zoom; }
+  GBool getChangeLeft() { return changeLeft; }
+  GBool getChangeTop() { return changeTop; }
+  GBool getChangeZoom() { return changeZoom; }
+
+private:
+
+  LinkDestKind kind;		// destination type
+  GBool pageIsRef;		// is the page a reference or number?
+  union {
+    Ref pageRef;		// reference to page
+    int pageNum;		// one-relative page number
+  };
+  double left, bottom;		// position
+  double right, top;
+  double zoom;			// zoom factor
+  GBool changeLeft, changeTop;	// which position components to change:
+  GBool changeZoom;		//   destXYZ uses all three;
+				//   destFitH/BH use changeTop;
+				//   destFitV/BV use changeLeft
+  GBool ok;			// set if created successfully
+
+  LinkDest(LinkDest *dest);
+};
+
+//------------------------------------------------------------------------
+// LinkGoTo
+//------------------------------------------------------------------------
+
+class LinkGoTo: public LinkAction {
+public:
+
+  // Build a LinkGoTo from a destination (dictionary, name, or string).
+  LinkGoTo(Object *destObj);
+
+  // Destructor.
+  virtual ~LinkGoTo();
+
+  // Was the LinkGoTo created successfully?
+  virtual GBool isOk() { return dest || namedDest; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionGoTo; }
+  LinkDest *getDest() { return dest; }
+  GString *getNamedDest() { return namedDest; }
+
+private:
+
+  LinkDest *dest;		// regular destination (NULL for remote
+				//   link with bad destination)
+  GString *namedDest;		// named destination (only one of dest and
+				//   and namedDest may be non-NULL)
+};
+
+//------------------------------------------------------------------------
+// LinkGoToR
+//------------------------------------------------------------------------
+
+class LinkGoToR: public LinkAction {
+public:
+
+  // Build a LinkGoToR from a file spec (dictionary) and destination
+  // (dictionary, name, or string).
+  LinkGoToR(Object *fileSpecObj, Object *destObj);
+
+  // Destructor.
+  virtual ~LinkGoToR();
+
+  // Was the LinkGoToR created successfully?
+  virtual GBool isOk() { return fileName && (dest || namedDest); }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionGoToR; }
+  GString *getFileName() { return fileName; }
+  LinkDest *getDest() { return dest; }
+  GString *getNamedDest() { return namedDest; }
+
+private:
+
+  GString *fileName;		// file name
+  LinkDest *dest;		// regular destination (NULL for remote
+				//   link with bad destination)
+  GString *namedDest;		// named destination (only one of dest and
+				//   and namedDest may be non-NULL)
+};
+
+//------------------------------------------------------------------------
+// LinkLaunch
+//------------------------------------------------------------------------
+
+class LinkLaunch: public LinkAction {
+public:
+
+  // Build a LinkLaunch from an action dictionary.
+  LinkLaunch(Object *actionObj);
+
+  // Destructor.
+  virtual ~LinkLaunch();
+
+  // Was the LinkLaunch created successfully?
+  virtual GBool isOk() { return fileName != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionLaunch; }
+  GString *getFileName() { return fileName; }
+  GString *getParams() { return params; }
+
+private:
+
+  GString *fileName;		// file name
+  GString *params;		// parameters
+};
+
+//------------------------------------------------------------------------
+// LinkURI
+//------------------------------------------------------------------------
+
+class LinkURI: public LinkAction {
+public:
+
+  // Build a LinkURI given the URI (string) and base URI.
+  LinkURI(Object *uriObj, GString *baseURI);
+
+  // Destructor.
+  virtual ~LinkURI();
+
+  // Was the LinkURI created successfully?
+  virtual GBool isOk() { return uri != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionURI; }
+  GString *getURI() { return uri; }
+
+private:
+
+  GString *uri;			// the URI
+};
+
+//------------------------------------------------------------------------
+// LinkNamed
+//------------------------------------------------------------------------
+
+class LinkNamed: public LinkAction {
+public:
+
+  // Build a LinkNamed given the action name.
+  LinkNamed(Object *nameObj);
+
+  virtual ~LinkNamed();
+
+  // Was the LinkNamed created successfully?
+  virtual GBool isOk() { return name != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionNamed; }
+  GString *getName() { return name; }
+
+private:
+
+  GString *name;
+};
+
+//------------------------------------------------------------------------
+// LinkMovie
+//------------------------------------------------------------------------
+
+class LinkMovie: public LinkAction {
+public:
+
+  LinkMovie(Object *annotObj, Object *titleObj);
+
+  virtual ~LinkMovie();
+
+  // Was the LinkMovie created successfully?
+  virtual GBool isOk() { return annotRef.num >= 0 || title != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionMovie; }
+  GBool hasAnnotRef() { return annotRef.num >= 0; }
+  Ref *getAnnotRef() { return &annotRef; }
+  GString *getTitle() { return title; }
+
+private:
+
+  Ref annotRef;
+  GString *title;
+};
+
+//------------------------------------------------------------------------
+// LinkJavaScript
+//------------------------------------------------------------------------
+
+class LinkJavaScript: public LinkAction {
+public:
+
+  LinkJavaScript(Object *jsObj);
+
+  virtual ~LinkJavaScript();
+
+  // Was the LinkJavaScript created successfully?
+  virtual GBool isOk() { return js != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionJavaScript; }
+  GString *getJS() { return js; }
+
+private:
+
+  GString *js;
+};
+
+//------------------------------------------------------------------------
+// LinkSubmitForm
+//------------------------------------------------------------------------
+
+class LinkSubmitForm: public LinkAction {
+public:
+
+  LinkSubmitForm(Object *urlObj, Object *fieldsObj, Object *flagsObj);
+
+  virtual ~LinkSubmitForm();
+
+  // Was the LinkSubmitForm created successfully?
+  virtual GBool isOk() { return url != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionSubmitForm; }
+  GString *getURL() { return url; }
+  Object *getFields() { return &fields; }
+  int getFlags() { return flags; }
+
+private:
+
+  GString *url;
+  Object fields;
+  int flags;
+};
+
+//------------------------------------------------------------------------
+// LinkHide
+//------------------------------------------------------------------------
+
+class LinkHide: public LinkAction {
+public:
+
+  LinkHide(Object *fieldsObj, Object *hideFlagObj);
+
+  virtual ~LinkHide();
+
+  // Was the LinkHide created successfully?
+  virtual GBool isOk() { return !fields.isNull(); }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionHide; }
+  Object *getFields() { return &fields; }
+  GBool getHideFlag() { return hideFlag; }
+
+private:
+
+  Object fields;
+  GBool hideFlag;
+};
+
+//------------------------------------------------------------------------
+// LinkUnknown
+//------------------------------------------------------------------------
+
+class LinkUnknown: public LinkAction {
+public:
+
+  // Build a LinkUnknown with the specified action type.
+  LinkUnknown(char *actionA);
+
+  // Destructor.
+  virtual ~LinkUnknown();
+
+  // Was the LinkUnknown create successfully?
+  virtual GBool isOk() { return action != NULL; }
+
+  // Accessors.
+  virtual LinkActionKind getKind() { return actionUnknown; }
+  GString *getAction() { return action; }
+
+private:
+
+  GString *action;		// action subtype
+};
+
+//------------------------------------------------------------------------
+// Link
+//------------------------------------------------------------------------
+
+class Link {
+public:
+
+  // Construct a link, given its dictionary.
+  Link(Dict *dict, GString *baseURI);
+
+  // Destructor.
+  ~Link();
+
+  // Was the link created successfully?
+  GBool isOk() { return ok; }
+
+  // Check if point is inside the link rectangle.
+  GBool inRect(double x, double y)
+    { return x1 <= x && x <= x2 && y1 <= y && y <= y2; }
+
+  // Get action.
+  LinkAction *getAction() { return action; }
+
+  // Get the link rectangle.
+  void getRect(double *xa1, double *ya1, double *xa2, double *ya2)
+    { *xa1 = x1; *ya1 = y1; *xa2 = x2; *ya2 = y2; }
+
+private:
+
+  double x1, y1;		// lower left corner
+  double x2, y2;		// upper right corner
+  LinkAction *action;		// action
+  GBool ok;			// is link valid?
+};
+
+//------------------------------------------------------------------------
+// Links
+//------------------------------------------------------------------------
+
+class Links {
+public:
+
+  // Extract links from array of annotations.
+  Links(Object *annots, GString *baseURI);
+
+  // Destructor.
+  ~Links();
+
+  // Iterate through list of links.
+  int getNumLinks() { return numLinks; }
+  Link *getLink(int i) { return links[i]; }
+
+  // If point <x>,<y> is in a link, return the associated action;
+  // else return NULL.
+  LinkAction *find(double x, double y);
+
+  // Return true if <x>,<y> is in a link.
+  GBool onLink(double x, double y);
+
+private:
+
+  Link **links;
+  int numLinks;
+};
+
+#endif