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Diffstat (limited to 'tesseract/src/ccmain/werdit.cpp')
-rw-r--r-- | tesseract/src/ccmain/werdit.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tesseract/src/ccmain/werdit.cpp b/tesseract/src/ccmain/werdit.cpp new file mode 100644 index 00000000..17834023 --- /dev/null +++ b/tesseract/src/ccmain/werdit.cpp @@ -0,0 +1,68 @@ +/********************************************************************** + * File: werdit.cpp (Formerly wordit.c) + * Description: An iterator for passing over all the words in a document. + * Author: Ray Smith + * Created: Mon Apr 27 08:51:22 BST 1992 + * + * (C) Copyright 1992, Hewlett-Packard Ltd. + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** http://www.apache.org/licenses/LICENSE-2.0 + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + * + **********************************************************************/ + +#include "werdit.h" + +#include "errcode.h" // for ASSERT_HOST +#include "pageres.h" // for PAGE_RES_IT, PAGE_RES (ptr only), WERD_RES +#include "stepblob.h" // for C_BLOB_IT, C_BLOB, C_BLOB_LIST +#include "werd.h" // for WERD + +namespace tesseract { + +/********************************************************************** + * make_pseudo_word + * + * Make all the blobs inside a selection into a single word. + * The returned PAGE_RES_IT* it points to the new word. After use, call + * it->DeleteCurrentWord() to delete the fake word, and then + * delete it to get rid of the iterator itself. + **********************************************************************/ + +PAGE_RES_IT* make_pseudo_word(PAGE_RES* page_res, const TBOX& selection_box) { + PAGE_RES_IT pr_it(page_res); + C_BLOB_LIST new_blobs; // list of gathered blobs + C_BLOB_IT new_blob_it = &new_blobs; // iterator + + for (WERD_RES* word_res = pr_it.word(); word_res != nullptr; + word_res = pr_it.forward()) { + WERD* word = word_res->word; + if (word->bounding_box().overlap(selection_box)) { + C_BLOB_IT blob_it(word->cblob_list()); + for (blob_it.mark_cycle_pt(); + !blob_it.cycled_list(); blob_it.forward()) { + C_BLOB* blob = blob_it.data(); + if (blob->bounding_box().overlap(selection_box)) { + new_blob_it.add_after_then_move(C_BLOB::deep_copy(blob)); + } + } + if (!new_blobs.empty()) { + WERD* pseudo_word = new WERD(&new_blobs, 1, nullptr); + word_res = pr_it.InsertSimpleCloneWord(*word_res, pseudo_word); + auto* it = new PAGE_RES_IT(page_res); + while (it->word() != word_res && it->word() != nullptr) it->forward(); + ASSERT_HOST(it->word() == word_res); + return it; + } + } + } + return nullptr; +} + +} // namespace tesseract |