xpdfviewer.cc

将pdf文档转换为高质量的html文档

  XtVaGetValues(zoomMenu, XmNmenuHistory, &w, NULL);
  for (i = 0; i < nZoomMenuItems; ++i) {
    if (w == zoomMenuBtns[i]) {
      return i;
    }
  }
  // this should never happen
  return 0;
#endif
}

void XPDFViewer::setZoomIdx(int idx) {
#if USE_COMBO_BOX
  XtVaSetValues(zoomComboBox, XmNselectedPosition, idx + 1, NULL);
#else
  XtVaSetValues(zoomMenu, XmNmenuHistory, zoomMenuBtns[idx], NULL);
#endif
}

void XPDFViewer::setZoomVal(double z) {
#if USE_COMBO_BOX
  char buf[32];
  XmString s;
  int i;

  for (i = 0; i < nZoomMenuItems; ++i) {
    if (z == zoomMenuInfo[i].zoom) {
      XtVaSetValues(zoomComboBox, XmNselectedPosition, i + 1, NULL);
      return;
    }
  }
  sprintf(buf, "%d", (int)z);
  s = XmStringCreateLocalized(buf);
  XtVaSetValues(zoomComboBox, XmNselectedItem, s, NULL);
  XmStringFree(s);
#else
  int i;

  for (i = 0; i < nZoomMenuItems; ++i) {
    if (z == zoomMenuInfo[i].zoom) {
      XtVaSetValues(zoomMenu, XmNmenuHistory, zoomMenuBtns[i], NULL);
      return;
    }
  }
  for (i = maxZoomIdx; i < minZoomIdx; ++i) {
    if (z > zoomMenuInfo[i].zoom) {
      break;
    }
  }
  XtVaSetValues(zoomMenu, XmNmenuHistory, zoomMenuBtns[i], NULL);
#endif
}

void XPDFViewer::prevPageCbk(Widget widget, XtPointer ptr,
			     XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->gotoPrevPage(1, gTrue, gFalse);
  viewer->core->takeFocus();
}

void XPDFViewer::prevTenPageCbk(Widget widget, XtPointer ptr,
				XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->gotoPrevPage(10, gTrue, gFalse);
  viewer->core->takeFocus();
}

void XPDFViewer::nextPageCbk(Widget widget, XtPointer ptr,
			     XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->gotoNextPage(1, gTrue);
  viewer->core->takeFocus();
}

void XPDFViewer::nextTenPageCbk(Widget widget, XtPointer ptr,
				XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->gotoNextPage(10, gTrue);
  viewer->core->takeFocus();
}

void XPDFViewer::backCbk(Widget widget, XtPointer ptr,
			 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->goBackward();
  viewer->core->takeFocus();
}

void XPDFViewer::forwardCbk(Widget widget, XtPointer ptr,
			    XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->core->goForward();
  viewer->core->takeFocus();
}

#if USE_COMBO_BOX

void XPDFViewer::zoomComboBoxCbk(Widget widget, XtPointer ptr,
				 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  XmComboBoxCallbackStruct *data = (XmComboBoxCallbackStruct *)callData;
  double z;
  char *s;
  XmStringContext context;
  XmStringCharSet charSet;
  XmStringDirection dir;
  Boolean sep;

  z = viewer->core->getZoom();
  if (data->item_position == 0) {
    XmStringInitContext(&context, data->item_or_text);
    if (XmStringGetNextSegment(context, &s, &charSet, &dir, &sep)) {
      z = atof(s);
      if (z <= 1) {
	z = defZoom;
      }
      XtFree(charSet);
      XtFree(s);
    }
    XmStringFreeContext(context);
  } else {
    z = zoomMenuInfo[data->item_position - 1].zoom;
  }
  // only redraw if this was triggered by an event; otherwise
  // the caller is responsible for doing the redraw
  if (z != viewer->core->getZoom() && data->event) {
    viewer->displayPage(viewer->core->getPageNum(), z,
			viewer->core->getRotate(), gTrue, gFalse);
  }
  viewer->core->takeFocus();
}

#else // USE_COMBO_BOX

void XPDFViewer::zoomMenuCbk(Widget widget, XtPointer ptr,
			     XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  XmPushButtonCallbackStruct *data = (XmPushButtonCallbackStruct *)callData;
  XtPointer userData;
  double z;

  XtVaGetValues(widget, XmNuserData, &userData, NULL);
  z = zoomMenuInfo[(long)userData].zoom;
  // only redraw if this was triggered by an event; otherwise
  // the caller is responsible for doing the redraw
  if (z != viewer->core->getZoom() && data->event) {
    viewer->displayPage(viewer->core->getPageNum(), z,
			viewer->core->getRotate(), gTrue, gFalse);
  }
  viewer->core->takeFocus();
}

#endif // USE_COMBO_BOX

void XPDFViewer::findCbk(Widget widget, XtPointer ptr,
			 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  if (!viewer->core->getDoc()) {
    return;
  }
  viewer->mapFindDialog();
}

void XPDFViewer::printCbk(Widget widget, XtPointer ptr,
			  XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  if (!viewer->core->getDoc()) {
    return;
  }
  XtManageChild(viewer->printDialog);
}

void XPDFViewer::aboutCbk(Widget widget, XtPointer ptr,
			  XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  XtManageChild(viewer->aboutDialog);
}

void XPDFViewer::quitCbk(Widget widget, XtPointer ptr,
			 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->app->quit();
}

void XPDFViewer::openCbk(Widget widget, XtPointer ptr,
			 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->mapOpenDialog(gFalse);
}

void XPDFViewer::openInNewWindowCbk(Widget widget, XtPointer ptr,
				    XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->mapOpenDialog(gTrue);
}

void XPDFViewer::reloadCbk(Widget widget, XtPointer ptr,
			 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->reloadFile();
}

void XPDFViewer::saveAsCbk(Widget widget, XtPointer ptr,
			   XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  if (!viewer->core->getDoc()) {
    return;
  }
  viewer->mapSaveAsDialog();
}

void XPDFViewer::continuousModeToggleCbk(Widget widget, XtPointer ptr,
					 XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  XmToggleButtonCallbackStruct *data =
      (XmToggleButtonCallbackStruct *)callData;

  viewer->core->setContinuousMode(data->set == XmSET);
}

void XPDFViewer::rotateCCWCbk(Widget widget, XtPointer ptr,
			      XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  int r;

  r = viewer->core->getRotate();
  r = (r == 0) ? 270 : r - 90;
  viewer->displayPage(viewer->core->getPageNum(), viewer->core->getZoom(),
		      r, gTrue, gFalse);
}

void XPDFViewer::rotateCWCbk(Widget widget, XtPointer ptr,
			     XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  int r;

  r = viewer->core->getRotate();
  r = (r == 270) ? 0 : r + 90;
  viewer->displayPage(viewer->core->getPageNum(), viewer->core->getZoom(),
		      r, gTrue, gFalse);
}

void XPDFViewer::closeCbk(Widget widget, XtPointer ptr,
			  XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->app->close(viewer, gFalse);
}

void XPDFViewer::closeMsgCbk(Widget widget, XtPointer ptr,
			     XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;

  viewer->app->close(viewer, gTrue);
}

void XPDFViewer::pageNumCbk(Widget widget, XtPointer ptr,
			    XtPointer callData) {
  XPDFViewer *viewer = (XPDFViewer *)ptr;
  char *s, *p;
  int pg;
  char buf[20];

  if (!viewer->core->getDoc()) {
    goto err;
  }
  s = XmTextFieldGetString(viewer->pageNumText);
  for (p = s; *p; ++p) {
    if (!isdigit(*p)) {
      goto err;
    }
  }
  pg = atoi(s);
  if (pg < 1 || pg > viewer->core->getDoc()->getNumPages()) {
    goto err;
  }
  viewer->displayPage(pg, viewer->core->getZoom(),
		      viewer->core->getRotate(), gFalse, gTrue);
  viewer->core->takeFocus();
  return;

 err:
  XBell(viewer->display, 0);
  sprintf(buf, "%d", viewer->core->getPageNum());
  XmTextFieldSetString(viewer->pageNumText, buf);
}

void XPDFViewer::updateCbk(void *data, GString *fileName,
			   int pageNum, int numPages, char *linkString) {
  XPDFViewer *viewer = (XPDFViewer *)data;
  GString *title;
  char buf[20];
  XmString s;

  if (fileName) {
    if (!(title = viewer->app->getTitle())) {
      title = (new GString(xpdfAppName))->append(": ")->append(fileName);
    }
    XtVaSetValues(viewer->win, XmNtitle, title->getCString(),
		  XmNiconName, title->getCString(), NULL);
    if (!viewer->app->getTitle()) {
      delete title;
    }
#ifndef DISABLE_OUTLINE
    if (!viewer->app->getFullScreen()) {
      viewer->setupOutline();
    }
#endif
    viewer->setupPrintDialog();
  }

  if (pageNum >= 0) {
    s = XmStringCreateLocalized("");
    XtVaSetValues(viewer->linkLabel, XmNlabelString, s, NULL);
    XmStringFree(s);
    sprintf(buf, "%d", pageNum);
    XmTextFieldSetString(viewer->pageNumText, buf);
    XtVaSetValues(viewer->prevTenPageBtn, XmNsensitive,
		  pageNum > 1, NULL);
    XtVaSetValues(viewer->prevPageBtn, XmNsensitive,
		  pageNum > 1, NULL);
    XtVaSetValues(viewer->nextTenPageBtn, XmNsensitive,
		  pageNum < viewer->core->getDoc()->getNumPages(), NULL);
    XtVaSetValues(viewer->nextPageBtn, XmNsensitive,
		  pageNum < viewer->core->getDoc()->getNumPages(), NULL);
    XtVaSetValues(viewer->backBtn, XmNsensitive,
		  viewer->core->canGoBack(), NULL);
    XtVaSetValues(viewer->forwardBtn, XmNsensitive,
		  viewer->core->canGoForward(), NULL);
  }

  if (numPages >= 0) {
    sprintf(buf, " of %d", numPages);
    s = XmStringCreateLocalized(buf);
    XtVaSetValues(viewer->pageCountLabel, XmNlabelString, s, NULL);
    XmStringFree(s);
  }

  if (linkString) {
    s = XmStringCreateLocalized(linkString);
    XtVaSetValues(viewer->linkLabel, XmNlabelString, s, NULL);
    XmStringFree(s);
  }
}


//------------------------------------------------------------------------
// GUI code: outline
//------------------------------------------------------------------------

#ifndef DISABLE_OUTLINE

void XPDFViewer::setupOutline() {
  GList *items;
  UnicodeMap *uMap;
  GString *enc;
  int i;

  // unmanage and destroy the old labels
  if (outlineLabels) {
    XtUnmanageChildren(outlineLabels, outlineLabelsLength);
    for (i = 0; i < outlineLabelsLength; ++i) {
      XtDestroyWidget(outlineLabels[i]);
    }
    gfree(outlineLabels);
    outlineLabels = NULL;
    outlineLabelsLength = outlineLabelsSize = 0;
  }

  if (core->getDoc()) {

    // create the new labels
    items = core->getDoc()->getOutline()->getItems();
    if (items && items->getLength() > 0) {
      enc = new GString("Latin1");
      uMap = globalParams->getUnicodeMap(enc);
      delete enc;
      setupOutlineItems(items, NULL, uMap);
      uMap->decRefCnt();
    }

    // manage the new labels
    XtManageChildren(outlineLabels, outlineLabelsLength);
  }
}

void XPDFViewer::setupOutlineItems(GList *items, Widget parent,
				   UnicodeMap *uMap) {
  OutlineItem *item;
  GList *kids;
  Widget label;
  Arg args[20];
  GString *title;
  char buf[8];
  XmString s;
  int i, j, n;

  for (i = 0; i < items->getLength(); ++i) {
    item = (OutlineItem *)items->get(i);
    title = new GString();
    for (j = 0; j < item->getTitleLength(); ++j) {
      n = uMap->mapUnicode(item->getTitle()[j], buf, sizeof(buf));
      title->append(buf, n);
    }
    n = 0;