mirror of
https://invent.kde.org/graphics/okular
synced 2024-10-13 11:22:24 +00:00
255 lines
8.3 KiB
C++
255 lines
8.3 KiB
C++
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//
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// Class: dviWindow
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//
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// Previewer for TeX DVI files.
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//
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#include <qapplication.h>
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#include <qpainter.h>
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#include <qprogressdialog.h>
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#include <kmessagebox.h>
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#include <kdebug.h>
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#include <keditcl.h>
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#include <klocale.h>
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#include "dviwin.h"
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extern QPainter foreGroundPaint; // QPainter used for text
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void dviWindow::showFindTextDialog(void)
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{
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if (findDialog == 0) {
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// WARNING: This text appears several times in the code. Change
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// everywhere, or nowhere!
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if (KMessageBox::warningContinueCancel( this,
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i18n("<qt>This function searches the DVI file for plain text. Unfortunately, this version of "
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"KDVI treats only plain ASCII characters properly. Symbols, ligatures, mathematical "
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"formulae, accented characters, and non-english text, such as Russian or Korean, will "
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"most likely be messed up completely. Continue anyway?</qt>"),
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i18n("Function may not work as expected"),
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i18n("Continue"),
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"warning_search_text_may_not_work") == KMessageBox::Cancel)
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return;
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findDialog = new KEdFind(this, "Text find dialog", true);
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connect(findDialog, SIGNAL(search()), this, SLOT(findText()));
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}
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findDialog->show();
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}
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void dviWindow::findText(void)
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{
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searchText = findDialog->getText();
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if (searchText.isEmpty())
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return;
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if (findNextAction != 0)
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findNextAction->setEnabled(!searchText.isEmpty());
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if (findPrevAction != 0)
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findPrevAction->setEnabled(!searchText.isEmpty());
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if (findDialog->get_direction())
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findPrevText();
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else
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findNextText();
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}
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void dviWindow::findNextText(void)
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{
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if (findDialog == 0) {
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kdError(4300) << "findNextText called when findDialog == 0" << endl;
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return;
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}
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if (searchText.isEmpty()) {
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kdError(4300) << "findNextText called when search text was empty" << endl;
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return;
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}
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bool case_sensitive = findDialog->case_sensitive();
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bool _postscript_sav = _postscript;
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bool oneTimeRound = false;
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int current_page_sav = current_page;
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unsigned int firstPageOfSearch = current_page;
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unsigned int lastPageOfSearch = dviFile->total_pages-1;
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_postscript = FALSE; // Switch off postscript to speed up things...
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QPixmap pixie(1,1); // Dummy pixmap for the method draw_page which wants to have a valid painter.
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QProgressDialog progress( i18n("Searching for '%1'...").arg(searchText), i18n("Abort"),
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lastPageOfSearch - firstPageOfSearch, this, "searchForwardTextProgress", TRUE );
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progress.setMinimumDuration ( 1000 );
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while(current_page <= lastPageOfSearch) {
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progress.setProgress( current_page - firstPageOfSearch );
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qApp->processEvents();
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if ( progress.wasCancelled() )
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break;
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// Go trough the text of the current page and search for the
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// string.
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for(int i=DVIselection.selectedTextStart+1; i<num_of_used_textlinks; i++)
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if (textLinkList[i].linkText.find(searchText, 0, case_sensitive) >= 0) {
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// Restore the previous settings, including the current
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// page. Otherwise, the program is "smart enough" not to
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// re-render the screen.
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_postscript = _postscript_sav;
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int j = current_page;
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current_page = current_page_sav;
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emit(request_goto_page(j, textLinkList[i].box.bottom() ));
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DVIselection.set(i, i, textLinkList[i].linkText);
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repaint();
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return;
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}
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DVIselection.clear();
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current_page++;
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if ((current_page == dviFile->total_pages)) {
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progress.hide();
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if (oneTimeRound == true)
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break;
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oneTimeRound = true;
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if (current_page_sav != 0) {
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int answ = KMessageBox::questionYesNo(this, i18n("<qt>The search string <strong>%1</strong> could not be found till the "
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"end of the document. Should the search be restarted from the beginning "
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"of the document?</qt>").arg(searchText),
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i18n("Text not found"));
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if (answ == KMessageBox::Yes) {
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firstPageOfSearch = 0;
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current_page = 0;
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lastPageOfSearch = current_page_sav;
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progress.setTotalSteps(lastPageOfSearch);
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progress.setProgress(0);
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}
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}
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}
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foreGroundPaint.begin( &pixie );
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draw_page(); // We don't really care for errors in draw_page(), no error handling here.
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foreGroundPaint.end();
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}// of while (all pages)
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KMessageBox::sorry( this, i18n("<qt>The search string <strong>%1</strong> could not be found.</qt>").arg(searchText) );
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// Restore the PostScript setting
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_postscript = _postscript_sav;
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// Restore the current page.
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current_page = current_page_sav;
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foreGroundPaint.begin( &pixie );
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draw_page(); // We don't care for errors here
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foreGroundPaint.end();
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}
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void dviWindow::findPrevText(void)
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{
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if (findDialog == 0) {
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kdError(4300) << "findNextText called when findDialog == 0" << endl;
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return;
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}
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if (searchText.isEmpty()) {
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kdError(4300) << "findNextText called when search text was empty" << endl;
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return;
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}
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bool case_sensitive = findDialog->case_sensitive();
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bool _postscript_sav = _postscript;
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bool oneTimeRound = false;
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int current_page_sav = current_page;
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unsigned int firstPageOfSearch = 0;
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unsigned int lastPageOfSearch = current_page;
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_postscript = FALSE; // Switch off postscript to speed up things...
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QPixmap pixie(1,1); // Dummy pixmap for the method draw_page which wants to have a valid painter.
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QProgressDialog progress( i18n("Searching for '%1'...").arg(searchText), i18n("Abort"),
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lastPageOfSearch - firstPageOfSearch, this, "searchForwardTextProgress", TRUE );
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progress.setMinimumDuration ( 1000 );
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if (DVIselection.selectedTextStart == 0) {
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current_page--;
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if (current_page >= dviFile->total_pages) { // Note: current_page is unsigned. It will not become negative, but very big
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oneTimeRound = true;
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firstPageOfSearch = current_page_sav;
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current_page = dviFile->total_pages-1;
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lastPageOfSearch = dviFile->total_pages-1;
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progress.setTotalSteps(lastPageOfSearch-firstPageOfSearch);
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progress.setProgress(0);
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DVIselection.clear();
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foreGroundPaint.begin( &pixie );
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draw_page(); // We don't really care for errors in draw_page(), no error handling here.
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foreGroundPaint.end();
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}
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}
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do {
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if ((current_page >= dviFile->total_pages)) { // Note: current_page is unsigned. It will not become negative, but very big
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progress.hide();
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if (oneTimeRound == true)
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break;
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oneTimeRound = true;
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if (current_page_sav != 0) {
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int answ = KMessageBox::questionYesNo(this, i18n("<qt>The search string <strong>%1</strong> could not be found till the "
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"beginning of the document. Should the search be restarted from the end "
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"of the document?</qt>").arg(searchText),
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i18n("Text not found"));
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if (answ == KMessageBox::Yes) {
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firstPageOfSearch = current_page_sav;
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current_page = dviFile->total_pages-1;
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lastPageOfSearch = dviFile->total_pages-1;
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progress.setTotalSteps(lastPageOfSearch-firstPageOfSearch);
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progress.setProgress(0);
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}
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}
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}
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progress.setProgress( lastPageOfSearch - current_page );
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qApp->processEvents();
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if ( progress.wasCancelled() )
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break;
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// Go trough the text of the current page and search for the
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// string.
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int i=DVIselection.selectedTextStart-1;
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if (i < 0)
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i = num_of_used_textlinks;
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do{
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if (textLinkList[i].linkText.find(searchText, 0, case_sensitive) >= 0) {
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// Restore the previous settings, including the current
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// page. Otherwise, the program is "smart enough" not to
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// re-render the screen.
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_postscript = _postscript_sav;
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int j = current_page;
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current_page = current_page_sav;
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emit(request_goto_page(j, textLinkList[i].box.bottom() ));
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DVIselection.set(i, i, textLinkList[i].linkText);
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repaint();
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return;
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}
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i--;
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}while(i >= 0);
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current_page--;
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DVIselection.clear();
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foreGroundPaint.begin( &pixie );
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draw_page(); // We don't really care for errors in draw_page(), no error handling here.
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foreGroundPaint.end();
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} while( current_page < dviFile->total_pages ); // Note: current_page is unsigned. It will not become negative, but very big
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KMessageBox::sorry( this, i18n("<qt>The search string <strong>%1</strong> could not be found.</qt>").arg(searchText) );
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// Restore the PostScript setting
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_postscript = _postscript_sav;
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// Restore the current page.
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current_page = current_page_sav;
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foreGroundPaint.begin( &pixie );
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draw_page(); // We don't care for errors here
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foreGroundPaint.end();
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}
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