tesseract 4.1.1
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werdit.cpp
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1/**********************************************************************
2 * File: werdit.cpp (Formerly wordit.c)
3 * Description: An iterator for passing over all the words in a document.
4 * Author: Ray Smith
5 * Created: Mon Apr 27 08:51:22 BST 1992
6 *
7 * (C) Copyright 1992, Hewlett-Packard Ltd.
8 ** Licensed under the Apache License, Version 2.0 (the "License");
9 ** you may not use this file except in compliance with the License.
10 ** You may obtain a copy of the License at
11 ** http://www.apache.org/licenses/LICENSE-2.0
12 ** Unless required by applicable law or agreed to in writing, software
13 ** distributed under the License is distributed on an "AS IS" BASIS,
14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 ** See the License for the specific language governing permissions and
16 ** limitations under the License.
17 *
18 **********************************************************************/
19
20#include "werdit.h"
21#include "errcode.h" // for ASSERT_HOST
22#include "pageres.h" // for PAGE_RES_IT, PAGE_RES (ptr only), WERD_RES
23#include "stepblob.h" // for C_BLOB_IT, C_BLOB, C_BLOB_LIST
24#include "werd.h" // for WERD
25
26/**********************************************************************
27 * make_pseudo_word
28 *
29 * Make all the blobs inside a selection into a single word.
30 * The returned PAGE_RES_IT* it points to the new word. After use, call
31 * it->DeleteCurrentWord() to delete the fake word, and then
32 * delete it to get rid of the iterator itself.
33 **********************************************************************/
34
35PAGE_RES_IT* make_pseudo_word(PAGE_RES* page_res, const TBOX& selection_box) {
36 PAGE_RES_IT pr_it(page_res);
37 C_BLOB_LIST new_blobs; // list of gathered blobs
38 C_BLOB_IT new_blob_it = &new_blobs; // iterator
39
40 for (WERD_RES* word_res = pr_it.word(); word_res != nullptr;
41 word_res = pr_it.forward()) {
42 WERD* word = word_res->word;
43 if (word->bounding_box().overlap(selection_box)) {
44 C_BLOB_IT blob_it(word->cblob_list());
45 for (blob_it.mark_cycle_pt();
46 !blob_it.cycled_list(); blob_it.forward()) {
47 C_BLOB* blob = blob_it.data();
48 if (blob->bounding_box().overlap(selection_box)) {
49 new_blob_it.add_after_then_move(C_BLOB::deep_copy(blob));
50 }
51 }
52 if (!new_blobs.empty()) {
53 WERD* pseudo_word = new WERD(&new_blobs, 1, nullptr);
54 word_res = pr_it.InsertSimpleCloneWord(*word_res, pseudo_word);
55 auto* it = new PAGE_RES_IT(page_res);
56 while (it->word() != word_res && it->word() != nullptr) it->forward();
57 ASSERT_HOST(it->word() == word_res);
58 return it;
59 }
60 }
61 }
62 return nullptr;
63}
PAGE_RES_IT * make_pseudo_word(PAGE_RES *page_res, const TBOX &selection_box)
Definition: werdit.cpp:35
#define ASSERT_HOST(x)
Definition: errcode.h:88
WERD_RES * word() const
Definition: pageres.h:754
WERD_RES * forward()
Definition: pageres.h:734
WERD_RES * InsertSimpleCloneWord(const WERD_RES &clone_res, WERD *new_word)
Definition: pageres.cpp:1213
Definition: rect.h:34
bool overlap(const TBOX &box) const
Definition: rect.h:355
static C_BLOB * deep_copy(const C_BLOB *src)
Definition: stepblob.h:119
TBOX bounding_box() const
Definition: stepblob.cpp:253
Definition: werd.h:56
C_BLOB_LIST * cblob_list()
Definition: werd.h:95
TBOX bounding_box() const
Definition: werd.cpp:148