-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathcodeeditor.cpp
1452 lines (1327 loc) · 50.9 KB
/
codeeditor.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
This file is part of cPad Project.
cPad is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cPad is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cPad. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QtGui>
#include <QProcess>
#include "codeeditor.h"
#include "linenumberarea.h"
#include "functionfoldarea.h"
#include "cpadpalette.h"
#include "runcompile.h"
CodeEditor::CodeEditor(QWidget *parent) : QPlainTextEdit(parent)
{
//added by lijunsong
//this is for the find action
//it's import, don't delete it!
QPalette palette(this->palette());
palette.setBrush(QPalette::Active, QPalette::Highlight, palette.highlight());
palette.setBrush(QPalette::Inactive, QPalette::Highlight, palette.highlight());
palette.setColor(QPalette::Base, cpadPalette.defaultGroup[6]);
palette.setColor(QPalette::Text, cpadPalette.defaultGroup[9]);
this->setPalette(palette);
// end by lijunsong
//新建控件
lineNumberArea = new LineNumberArea(this);
functionFoldArea = new FunctionFoldArea(this);
memoryCenter = new MemoryCenter();
//事件处理
connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateLineNumberAreaWidth(int)));
connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(updateLineNumberArea(QRect,int)));
connect(this, SIGNAL(updateRequest(QRect,int)), functionFoldArea, SLOT(update()));
connect(this, SIGNAL(textChanged()), functionFoldArea, SLOT(repaint()));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(highlightCurrentLine()));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(matchParentheses()));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(myUpdate()));
//初始化
updateLineNumberAreaWidth(0);
highlightCurrentLine();
generalSetting();
readSettings();
mousePosition.setX(0);
mousePosition.setY(0);
needPaint = false;
}
void CodeEditor::turnOnHighlightCurrentLine(bool swi)
{
switchOfHighlightCurrentLine = swi;
highlightCurrentLine();
}
void CodeEditor::keyPressEvent(QKeyEvent *event)
{
if (event->key() == Qt::Key_Tab) {
QTextCursor tcr = this->textCursor();//光标
QTextBlock blk( tcr.block() );
int pos = tcr.position() - blk.position();
pos %= 4;
pos = 4 - pos;
QString str(pos, ' ');
tcr.insertText(str);
return;
}
else if (event->key() == Qt::Key_Return) {
QPlainTextEdit::keyPressEvent(event);
QSettings settings("5-up", "cPad");
if ( ! settings.value("AutoIndentSwitch").toBool() )
return;
QTextCursor tcr = this->textCursor();//光标
QString str = this->toPlainText();
//qDebug() << tcr.position();
int num = memoryCenter->autoIndent(str, tcr.position());
//qDebug() << num;
QString in(num, ' ');
tcr.insertText(in);
this->setTextCursor(tcr);
this->moveCursor(QTextCursor::Left);
this->moveCursor(QTextCursor::Right);
doAutoIndent();
return;
}
else if ( event->key() == Qt::Key_BraceLeft
|| event->key() == Qt::Key_BraceRight
|| event->key() == Qt::Key_E
|| event->key() == Qt::Key_T ) {
QPlainTextEdit::keyPressEvent(event);
QSettings settings("5-up", "cPad");
if ( ! settings.value("AutoIndentSwitch").toBool() )
return;
autoIndentAnalysis();
return;
}
else if (event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_N) {
emit needAutoComple(1);
return;
}
else if (event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_M) {
quickComment();
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_J )
{ //move down
QTextCursor cursor = this->textCursor();
cursor.movePosition(QTextCursor::Down);
this->setTextCursor(cursor);
return;
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_H )
{//move left
QTextCursor cursor = this->textCursor();
cursor.movePosition(QTextCursor::Left);
this->setTextCursor(cursor);
return;
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_K )
{//move up
QTextCursor cursor = this->textCursor();
cursor.movePosition(QTextCursor::Up);
this->setTextCursor(cursor);
return;
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_L )
{//move right
QTextCursor cursor = this->textCursor();
cursor.movePosition(QTextCursor::Right);
this->setTextCursor(cursor);
return;
}
else if ( event->modifiers( ) == Qt::AltModifier && event->key() == Qt::Key_D )
{ // delete current Line
QTextCursor cursor(this->textCursor().block());
cursor.movePosition(QTextCursor::StartOfBlock);
cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
cursor.removeSelectedText();
return;
}
else if ( event->modifiers( ) == Qt::AltModifier && event->key() == Qt::Key_Y )
{ // copy current Line
QTextCursor cursor(this->textCursor().block());
cursor.movePosition(QTextCursor::StartOfBlock);
cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
QTextCursor old(this->textCursor());
this->setTextCursor(cursor);
this->copy();
this->setTextCursor(old);
return;
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_P )
{ // paste
this->paste();
return;
}
else if ( event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_X )
{ // paste
QTextCursor cursor(this->textCursor());
if (cursor.atBlockEnd())
cursor.deletePreviousChar();
else
cursor.deleteChar();
this->setTextCursor(cursor);
return;
}
else if(event->key() == Qt::Key_Backspace)
{
QTextBlock block = textCursor().block();
//qDebug() << block.blockNumber();
if(block.blockNumber() != 0 && (block.isVisible() == false || block.previous().isVisible() == false) &&
textCursor().atBlockStart() == true)
{
if(block.isVisible()) block = block.previous();
while(block.blockNumber() != -1 && block.isVisible() == false)
{
block = block.previous();
}
functionUnfold(blockBoundingGeometry(block).top()+3);
}
}
QPlainTextEdit::keyPressEvent(event);
}
void CodeEditor::recomposeContent(int code)
{
QString str(this->toPlainText());
if (str == " cPad" && code == 11) {
this->selectAll();
QTextCursor tcr = textCursor();
tcr.insertText(tr("\n\n\n\n\n\n\n\n 维护人董帆、许航、李俊崧、黄文雄、蒋严泽\n 请帮助贫困的中国程序猿！！"));
tcr.movePosition(QTextCursor::Start);
return;
}
memoryCenter->analysisMain(str);
this->selectAll();
QTextCursor tcr = textCursor();
tcr.insertText(memoryCenter->relayout(code));
tcr.movePosition(QTextCursor::Start);
}
CodeEditor::~CodeEditor()
{
//析构时记录字体等数据
writeSettings();
}
void CodeEditor::generalSetting()
{
setWordWrapMode(QTextOption::WrapAnywhere);//设置词语Wrap为任意地方Wrap
undoAction = new QAction(QIcon(":/resources/undo.png"), tr("撤销(&U)"), this);
undoAction->setShortcut(QKeySequence::Undo);
undoAction->setStatusTip(tr("撤销上次的操作"));
//默认设置不可用
undoAction->setEnabled(false);
connect(undoAction, SIGNAL(triggered()), this, SLOT(undo()));
//编辑器可撤销信号与菜单项可用设置链接
connect(this, SIGNAL(undoAvailable(bool)),
undoAction, SLOT(setEnabled(bool)));
redoAction = new QAction(QIcon(":/resources/redo.png"), tr("重做(&R)"), this);
redoAction->setShortcut(QKeySequence::Redo);
redoAction->setStatusTip(tr("重做上次的操作"));
//默认设置不可用
redoAction->setEnabled(false);
connect(redoAction, SIGNAL(triggered()), this, SLOT(redo()));
//编辑器可重做信号与菜单项可用设置链接
connect(this, SIGNAL(redoAvailable(bool)),
redoAction, SLOT(setEnabled(bool)));
cutAction = new QAction(QIcon(":/resources/cut.png"), tr("剪切(&T)"), this);
cutAction->setShortcut(QKeySequence::Cut);
cutAction->setStatusTip(tr("剪切框选的内容至剪贴板"));
//默认设置不可用
cutAction->setEnabled(false);
connect(cutAction, SIGNAL(triggered()), this, SLOT(cut()));
//编辑器可复制信号与菜单项可用设置链接
connect(this, SIGNAL(copyAvailable(bool)),
cutAction, SLOT(setEnabled(bool)));
copyAction = new QAction(QIcon(":/resources/copy.png"), tr("复制(&C)"), this);
copyAction->setShortcut(QKeySequence::Copy);
copyAction->setStatusTip(tr("复制框选的内容至剪贴板"));
//默认设置不可用
copyAction->setEnabled(false);
connect(copyAction, SIGNAL(triggered()), this, SLOT(copy()));
//编辑器可复制信号与菜单项可用设置链接
connect(this, SIGNAL(copyAvailable(bool)),
copyAction, SLOT(setEnabled(bool)));
pasteAction = new QAction(QIcon(":/resources/paste.png"), tr("粘贴(&P)"), this);
pasteAction->setShortcut(QKeySequence::Paste);
pasteAction->setStatusTip(tr("粘贴剪贴板中的内容至当前位置"));
connect(pasteAction, SIGNAL(triggered()), this, SLOT(paste()));
selectAllAction = new QAction(QIcon(":/resources/selectall.png"), tr("全选(&A)"), this);
selectAllAction->setShortcut(QKeySequence::SelectAll);
selectAllAction->setStatusTip(tr("将文本框中全部内容框选"));
connect(selectAllAction, SIGNAL(triggered()), this, SLOT(selectAll()));
deleteAction = new QAction(QIcon(":/resources/delete.png"), tr("删除(&L)"), this);
deleteAction->setShortcut(QKeySequence::Delete);
deleteAction->setStatusTip(tr("删除框选的内容"));
//默认设置不可用
deleteAction->setEnabled(false);
connect(deleteAction, SIGNAL(triggered()),
this, SLOT(deleteSelectedText()));
//编辑器可复制信号与菜单项可用设置链接
connect(this, SIGNAL(copyAvailable(bool)),
deleteAction, SLOT(setEnabled(bool)));
contextMenu = new QMenu(this);
contextMenu->addAction(undoAction);
contextMenu->addAction(redoAction);
contextMenu->addSeparator();
contextMenu->addAction(cutAction);
contextMenu->addAction(copyAction);
contextMenu->addAction(pasteAction);
contextMenu->addAction(deleteAction);
contextMenu->addAction(selectAllAction);
}
void CodeEditor::contextMenuEvent(QContextMenuEvent *event)
{
contextMenu->exec(event->globalPos());
}
void CodeEditor::readSettings()
{
QSettings settings("5-up", "cPad");
//读取字体设置
QFont font = settings.value("fontFamily", "Courier New").toString();
int fontPointSize = settings.value("fontPiontSize", 11).toInt();
font.setPointSize(fontPointSize);
setFont(font);
//设置 tab 宽度
setTabStopWidth(4*fontMetrics().averageCharWidth());
}
void CodeEditor::writeSettings()
{
QSettings settings("5-up", "cPad");
//保存字体设置
settings.setValue("fontFamily", font().family());
settings.setValue("fontPiontSize", font().pointSize());
}
void CodeEditor::fontSettings()
{
bool ok;
//弹出对话框进行字体选择 成功选择后进行设置
QFont tfont = QFontDialog::getFont(&ok, font(), this, tr("字体设置"));
if (ok) {
emit fontChanged(tfont);
QFont afont(tfont.family(), tfont.pointSize());
setFont(afont);
//设置 tab 宽度
setTabStopWidth(4*fontMetrics().averageCharWidth());
}
}
//进行 Wrap 自动换行设置
void CodeEditor::setWrapMode(bool isWrap)
{
if(isWrap)
setLineWrapMode(QPlainTextEdit::WidgetWidth);
else
setLineWrapMode(QPlainTextEdit::NoWrap);
}
/*
计算行号区宽度：
获取最后一个block的编号，根据此编号计算出应设宽度，预留宽度为5个像素。
*/
int CodeEditor::lineNumberAreaWidth()
{
int digits = 1;
int max = qMax(1, blockCount());
while (max >= 10) {
max /= 10;
++digits;
}
int space = 5 + fontMetrics().width(QLatin1Char('9')) * digits;
return space;
}
/*
更新行号区宽度：
设置编辑区的位置，其left坐标为行号区宽度加上函数折叠区宽度（20）。
*/
void CodeEditor::updateLineNumberAreaWidth(int /* newBlockCount */)
{
setViewportMargins(lineNumberAreaWidth()+20, 0, 0, 0);
}
/*
更新行号区：
利用scroll,update等函数触发paintEvent事件。
*/
void CodeEditor::updateLineNumberArea(const QRect &rect, int dy)
{
if (dy)
lineNumberArea->scroll(0, dy);
else
lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
if (rect.contains(viewport()->rect()))
updateLineNumberAreaWidth(0);
}
/*
为区域内的控件重新分配大小:
通过CodeEdit框的左上角顶点坐标计算行号区和函数折叠区的位置。
*/
void CodeEditor::resizeEvent(QResizeEvent *e)
{
QPlainTextEdit::resizeEvent(e);
QRect cr = contentsRect();
lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
functionFoldArea->setGeometry(QRect(cr.left()+lineNumberAreaWidth(), cr.top(), 20, cr.height()));
}
/*
高亮当前行:
获取光标所在行，并设置此行背景属性。
<add by lijunsong> 注意：这里 append 的顺序不能颠倒，否则会影响到已经设置的extraSelection
*/
void CodeEditor::highlightCurrentLine()
{
/*QList<QTextEdit::ExtraSelection> extraSelection = extraSelections();
CpadPalette cpadPalette;
QColor lineColor = cpadPalette.defaultGroup[10];
QList<QTextEdit::ExtraSelection> extraSelectionNew;
if (!isReadOnly()) {
QTextEdit::ExtraSelection selection;
selection.format.setBackground(lineColor);
selection.format.setProperty(QTextFormat::FullWidthSelection, true);
selection.cursor = textCursor();
selection.cursor.clearSelection();
extraSelectionNew.append(selection);
}
//过滤
for (int i = 0; i < extraSelection.length(); i++)
{
if ( extraSelection[i].format.background() != lineColor )
extraSelectionNew.append(extraSelection[i]);
}
setExtraSelections(extraSelectionNew);*/
QList<QTextEdit::ExtraSelection> extraSelection = extraSelections();
QTextEdit::ExtraSelection * selection;
QColor lineColor = cpadPalette.defaultGroup[10];
if(switchOfHighlightCurrentLine == false)
{
lineColor = cpadPalette.defaultGroup[6];
}
if ( extraSelection.size() != 0 )
{
selection = &extraSelection[0];
selection->format.setBackground(lineColor);
selection->format.setProperty(QTextFormat::FullWidthSelection, true);
selection->cursor = textCursor();
selection->cursor.clearSelection();
}
else
{
QTextEdit::ExtraSelection selection;
selection.format.setBackground(lineColor);
selection.format.setProperty(QTextFormat::FullWidthSelection, true);
selection.cursor = textCursor();
selection.cursor.clearSelection();
extraSelection.append(selection);
}
setExtraSelections(extraSelection);
}
/*
自定义行号区画图函数:
先为整个行号区画背景色，然后通过firstVisibleBlock()找到第一个可见block，再通过计算编辑框高度找
到可见的底部block，最后从第一个可见block的编号开始，依次往下画出相应的行号。
*/
void CodeEditor::lineNumberAreaPaintEvent(QPaintEvent *event)
{
QPainter painter(lineNumberArea);
painter.fillRect(event->rect(), cpadPalette.defaultGroup[6]);
QTextBlock block = firstVisibleBlock();
int blockNumber = block.blockNumber();
int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
int bottom = top + (int) blockBoundingRect(block).height();
while (block.isValid() && top <= event->rect().bottom()) {
if (block.isVisible() && bottom >= event->rect().top()) {
QString number = QString::number(blockNumber + 1);
painter.setPen(cpadPalette.defaultGroup[7]);
painter.drawText(0, top, lineNumberArea->width(), fontMetrics().height(),
Qt::AlignRight, number);
}
block = block.next();
top = bottom;
bottom = top + (int) blockBoundingRect(block).height();
//qDebug() << "top = " << top << "bottom = " << bottom;
++blockNumber;
}
//qDebug() << " ";
}
void CodeEditor::myUpdate()
{
hide();
show();
}
/*
获取鼠标所在block：
根据鼠标y坐标计算鼠标与第一个可见block的距离，然后再从以一个可见block开始外下数（不计不可见block）
*/
QTextBlock CodeEditor::getMousePositionBlock(int mouseY)
{
QTextBlock block;
block = firstVisibleBlock();
while(block.blockNumber() != -1 && block.isVisible() == false)
{
block = block.next();
}
if(block.blockNumber() == -1) return block;
int blockHeight = (int)blockBoundingRect(block).height();
int blockNum = mouseY/blockHeight+1;
if(blockNum <= blockCount())
{
for(int i = 1 ; i < blockNum ; i++)
{
if(block.blockNumber() == -1) return block;
if(block.isVisible() == false) i--;
block = block.next();
}
while(block.blockNumber() != -1 && block.isVisible() == false)
{
block = block.next();
}
return block;
}
else return block;
}
/*
获取某block之前的不可见block数量
*/
int CodeEditor::getInvisibleBlockNum(int blockNum)
{
QTextBlock block = firstVisibleBlock();
int count = 0;
for(int i = 1 ; i <= blockNum ; i++)
{
if(block.blockNumber() == -1) break;
if(block.isVisible() == false)
{
i--;
count++;
}
block = block.next();
}
return count;
}
/*
函数折叠
*/
void CodeEditor::functionFold(int y)
{
//int topBlockNum , bottomBlockNum;
//bool isNeededPaint = false;
//getTopAndBottom(y,topBlockNum,bottomBlockNum,isNeededPaint);
QTextBlock blockNow = getMousePositionBlock(y);
QTextBlock topBlock,bottomBlock;
if(judgeLeftBracket(blockNow)) blockNow = blockNow.next();
if(matchForFolding(blockNow,topBlock,bottomBlock))
{
//bool cursorMove = topBlock.blockNumber() >= firstVisibleBlock().blockNumber() ? false : true;
bool cursorMove = true;
if(topBlock.blockNumber() != 0 && judgeLeftBracket(topBlock.previous())) topBlock = topBlock.previous();
//QTextBlock block = firstVisibleBlock();
//topBlockNum += getInvisibleBlockNum(topBlockNum);
//bottomBlockNum += getInvisibleBlockNum(bottomBlockNum);
//topBlockNum += block.blockNumber()-1;
//bottomBlockNum += block.blockNumber()-1;
//while(block.previous().blockNumber() != -1 && block.previous().blockNumber() > topBlockNum)
//{
// block = block.previous();
//}
if(cursorMove)
{
QTextCursor cursor = textCursor();
QTextBlock block1 = cursor.block();
do
{
if(block1.blockNumber() < topBlock.blockNumber())
{
block1 = block1.next();
moveCursor(QTextCursor::NextBlock);
}
else
{
block1 = block1.previous();
moveCursor(QTextCursor::PreviousBlock);
}
}while(block1.blockNumber() != topBlock.blockNumber() && textCursor().block().blockNumber() != 0);
}
if(topBlock.blockNumber() == 0 || judgeLeftBracket(topBlock.previous()) == false)
topBlock = topBlock.next();
if(topBlock.blockNumber() == -1) return;
QTextBlock block = topBlock;
do
{
block.setVisible(false);
block = block.next();
block.setVisible(false);
}while(block.blockNumber() != -1 && block.blockNumber() < bottomBlock.blockNumber());
myUpdate();
}
}
/*
函数打开
*/
void CodeEditor::functionUnfold(int y)
{
QTextBlock block = getMousePositionBlock(y);
if(block.isValid())
{
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
block = block.next();
while(block.isVisible() == false && block.blockNumber() != -1)
{
block.setVisible(true);
block = block.next();
}
myUpdate();
}
}
bool CodeEditor::judgeLeftBracket(QTextBlock block)
{
//if(block.blockNumber() == -1) return false;
if(block.next().blockNumber() == -1) return false;
block = block.next();
for(int i = 0 ; i < block.text().length() ; i++)
{
if(block.text().at(i) != QChar(' ') && block.text().at(i) != QChar('{')) return false;
else if(block.text().at(i) == QChar('{')) return true;
}
return false;
}
void CodeEditor::paintEvent(QPaintEvent *event)
{
QPlainTextEdit::paintEvent(event);
QTextBlock block = firstVisibleBlock();
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
if(block.blockNumber() == -1) return;
int blockHeight = (int)blockBoundingRect(block).height();
int visibleBlockNum = rect().height()/blockHeight+1;
int blockCounter = 1;
QPainter painter(viewport());
//painter.setPen(Qt::black);
painter.setPen(cpadPalette.defaultGroup[9]);
int littleChange = firstVisibleBlock().blockNumber() == 0 ? 4 : 0;
while(block.blockNumber() != -1 && blockCounter <= visibleBlockNum)
{
if(block.isVisible() == false)
{
if(block.previous().text().indexOf('{') == -1)
painter.drawText(QRect(block.previous().text().length()*fontMetrics().width('a')+30,
(int)blockBoundingGeometry(block.previous()).top()+littleChange,
fontMetrics().width('a')*5,fontMetrics().height()),
Qt::AlignCenter,QString("{...}"));
else painter.drawText(QRect(block.previous().text().length()*fontMetrics().width('a')+30,
(int)blockBoundingGeometry(block.previous()).top()+littleChange,
fontMetrics().width('a')*5,fontMetrics().height()),
Qt::AlignCenter,QString("...}"));
painter.drawRoundRect(QRect(block.previous().text().length()*fontMetrics().width('a')+25,
(int)blockBoundingGeometry(block.previous()).top()+littleChange,
fontMetrics().width('a')*5+10,fontMetrics().height()));
while(block.blockNumber() != -1 && block.isVisible() == false)
{
block = block.next();
}
}
else block = block.next();
if(block.blockNumber() != -1 && block.isVisible()) blockCounter++;
}
if(needPaint)
{
needPaint = false;
QBrush brush(QColor(200,230,255));
brush.setStyle(Qt::Dense4Pattern);
QPainter painter(viewport());
QTextBlock block = getMousePositionBlock(mousePosition.y());
//int blockHeight = (int)blockBoundingRect(block).height();
/*int blockNum = mousePosition.y()/blockHeight+1;
if(blockNum <= blockCount())
{
for(int i = 1 ; i < blockNum ; i++)
{
if(block.blockNumber() == -1) return;
if(block.isVisible() == false) i--;
block = block.next();
}
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
}
else return;*/
if(block.blockNumber() == -1) return;
if(judgeLeftBracket(block)) block = block.next();
QTextBlock leftBracketBlock,rightBracketBlock;
if(matchForFolding(block,leftBracketBlock,rightBracketBlock))
{
int littleChange = firstVisibleBlock().blockNumber() == 0 ? 4 : 0;
int bottomBlockPosition = blockBoundingGeometry(leftBracketBlock).bottom()+
(rightBracketBlock.blockNumber()-leftBracketBlock.blockNumber())*
blockBoundingGeometry(leftBracketBlock).height();
painter.fillRect(QRect(0,littleChange,event->rect().width(),
blockBoundingGeometry(leftBracketBlock).top()),brush);
painter.fillRect(QRect(0,bottomBlockPosition+littleChange,
event->rect().width(),
event->rect().height()-bottomBlockPosition),
brush);
painter.fillRect(QRect(0,(int)blockBoundingGeometry(leftBracketBlock).top()+littleChange,5,
bottomBlockPosition-
(int)blockBoundingGeometry(leftBracketBlock).top()),brush);
painter.fillRect(QRect(event->rect().width()-5,
(int)blockBoundingGeometry(leftBracketBlock).top()+littleChange,5,
bottomBlockPosition-
(int)blockBoundingGeometry(leftBracketBlock).top()),brush);
myUpdate();
}
else return;
}
}
/*
自定义函数折叠区画图函数:
语句块背景色：先为整个函数折叠区涂背景色，然后判断当鼠标在本区域上时，通过向getTopAndBottom函数传递当前鼠标y坐标
参数，判断当前鼠标是否在某个语句块中，如果在，函数返回当前鼠标所在语句块的顶部block号和底部block号，通过
这两个值计算当前语句块的起始y坐标和末尾y坐标，并高亮此区域；反之，则不做任何处理。
语句块折叠标记：搜索当前可见的所有block，根据‘{’确定语句块折叠标记的位置。
*/
void CodeEditor::functionFoldAreaPaintEvent(QPaintEvent *event)
{
QPainter painter(functionFoldArea);
painter.fillRect(event->rect(), cpadPalette.defaultGroup[6]);
if(mousePosition.x()>0 && mousePosition.x()<20)
{
QTextBlock block = getMousePositionBlock(mousePosition.y());
if(block.blockNumber() != -1)
{
QTextBlock topBlock,bottomBlock;
if(judgeLeftBracket(block)) block = block.next();
if(matchForFolding(block,topBlock,bottomBlock))
{
needPaint = true;
if(topBlock.blockNumber() != 0 && judgeLeftBracket(topBlock.previous()))
topBlock = topBlock.previous();
//QTextBlock block = firstVisibleBlock();
//int blockHeight = (int)blockBoundingRect(block).height();
//int topPosition = (topBlockNum-1)*blockHeight;
//int highlightHeight = bottomBlockNum*blockHeight-topPosition+3;
QLinearGradient linearGrad(QPointF(1,(int)blockBoundingGeometry(topBlock).top()),
QPointF(19,(int)blockBoundingGeometry(topBlock).top()));
linearGrad.setColorAt(0,cpadPalette.defaultGroup[10]);
linearGrad.setColorAt(1,cpadPalette.defaultGroup[10].lighter(150));
QBrush brush(linearGrad);
int bottomBlockPosition = blockBoundingGeometry(topBlock).bottom()+
(bottomBlock.blockNumber()-topBlock.blockNumber())*
blockBoundingGeometry(topBlock).height();
painter.fillRect(QRect(1,(int)blockBoundingGeometry(topBlock).top(),18,
bottomBlockPosition-(int)blockBoundingGeometry(topBlock).top()),brush);
/*QTextDocument *allDocument = document();
QTextCursor highlightCursor(allDocument);
QTextCursor cursor(allDocument);
cursor.beginEditBlock();
QTextCharFormat plainFormat(highlightCursor.charFormat());
QTextCharFormat colorFormat = plainFormat;
colorFormat.setBackground(Qt::gray);
int blockNum = mousePosition.y()/blockHeight+1;
if(blockNum <= blockCount())
{
for(int i = 1 ; i < blockNum ; i++)
{
if(block.blockNumber() == -1) return;
if(block.isVisible() == false) i--;
block = block.next();
}
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
}
else return;
QTextBlock leftBracketBlock,rightBracketBlock;
if(matchForFolding(block,leftBracketBlock,rightBracketBlock))
{
while(highlightCursor.block().blockNumber() != leftBracketBlock.blockNumber())
{
highlightCursor.movePosition(QTextCursor::Down,QTextCursor::KeepAnchor);
}
highlightCursor.mergeCharFormat(colorFormat);
}
else return;*/
}
}
}
QTextBlock block = firstVisibleBlock();
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
if(block.blockNumber() == -1) return;
int blockHeight = (int)blockBoundingRect(block).height();
int visibleBlockNum = rect().height()/blockHeight+1;
int blockNum = 1;
while(block.blockNumber() != -1 && blockNum <= visibleBlockNum)
{
//for(int i = 0 ; i < block.text().length() ; i++ )
//{
// if(block.text().at(i) == QChar('{') )
//{
// int bracketBlockNum = blockNum;
//if((i == 0 || block.text().at(i-1) == (QChar)' ') && block.isVisible() == true)
//{
// bracketBlockNum--;
//}
QTextBlock topBlock,bottomBlock;
if(matchForFolding(block,topBlock,bottomBlock) &&
topBlock.blockNumber() >= firstVisibleBlock().blockNumber())
{
int foldPosition;
if(topBlock.blockNumber() != 0 && topBlock.previous().isVisible() == false)
{
block = block.next();
if(block.blockNumber() != -1 && block.isVisible()) blockNum++;
continue;
}
if(topBlock.blockNumber() != 0 && judgeLeftBracket(topBlock.previous()))
topBlock = topBlock.previous();
foldPosition = (int)blockBoundingGeometry(topBlock).top();
// = (bracketBlockNum-1)*blockHeight;
painter.setPen(cpadPalette.defaultGroup[9]);
int littleChange = firstVisibleBlock().blockNumber() == 0 ? 4 : 0;
//if(judgeLeftBracket(block.previous()) == false && block.next().blockNumber() != -1)
// block = block.next();
if(topBlock.next().isVisible())
{
//painter.drawText(0, foldPosition+littleChange, 20, fontMetrics().height(),
// Qt::AlignCenter, QString("-"));
QPointF points[3] = {
QPointF(12,foldPosition+littleChange+5),
QPointF(6,foldPosition+littleChange+11),
QPointF(12,foldPosition+littleChange+11)
};
painter.drawPolygon(points,3);
QPointF points1[3] = {
QPointF(11,foldPosition+littleChange+6),
QPointF(7,foldPosition+littleChange+10),
QPointF(11,foldPosition+littleChange+10)
};
painter.drawPolygon(points1,3);
QPointF points2[3] = {
QPointF(10,foldPosition+littleChange+7),
QPointF(8,foldPosition+littleChange+9),
QPointF(10,foldPosition+littleChange+9)
};
painter.drawPolygon(points2,3);
}
else
{
//painter.drawText(0, foldPosition+littleChange, 20, fontMetrics().height(),
// Qt::AlignCenter, QString("+"));
QPointF points1[3] = {
QPointF(7,foldPosition+littleChange+4),
QPointF(7,foldPosition+littleChange+12),
QPointF(11,foldPosition+littleChange+8)
};
painter.drawPolygon(points1,3);
}
//}
//block = bottomBlock;
//blockNum += bottomBlock.blockNumber()-topBlock.blockNumber();
}
block = block.next();
if(block.blockNumber() != -1 && block.isVisible()) blockNum++;
}
}
/*
获取语句块的顶部和底部block号:
首先，找到鼠标当前所在的block，然后从此block往下搜索第一个未配对的‘}’，若找不到，直接返回；反之，记录下此底部block号以及
'}'位置，再从此位置往上搜索第一个为配对的'{'，若找不到，直接返回；反之，记录下此顶部block号，最后，判断找到的目标'{'是否为本行
除空格外的第一个字符，如果是，顶部block减去1，反之，不做任何处理（诸多编辑器如此）。
*/
void CodeEditor::getTopAndBottom(int mouseY , int& topBlockNum , int& bottomBlockNum , bool& isNeededPaint)
{
/*QTextBlock block;
block = firstVisibleBlock();
int blockHeight = (int)blockBoundingRect(block).height();
int blockNum = mouseY/blockHeight+1;
if(blockNum <= blockCount())
{
for(int i = 1 ; i < blockNum ; i++)
{
if(block.blockNumber() == -1) return;
if(block.isVisible() == false) i--;
block = block.next();
}
while(block.isVisible() == false && block.blockNumber() != -1)
{
block = block.next();
}
int blockNumInSearch = blockNum;
int brackets = 0;
int bracketPosition;
bool firstLeftBracket = false;
bool stop = false;
while(block.blockNumber() != -1 && !stop)
{
for(int i = 0 ; i < block.text().length() ; i++ )
{
if(block.text().at(i) == QChar('{') )
{
if(!firstLeftBracket && (blockNumInSearch == blockNum ||
(blockNumInSearch-1 == blockNum &&
(i == 0 || block.text().at(i-1) == (QChar)' '))))
{
firstLeftBracket = true;
continue;
}
else brackets-- ;
}
else if(block.text().at(i) == QChar('}') )
{
brackets++ ;
if ( brackets == 1 )
{
bottomBlockNum = blockNumInSearch;
bracketPosition = i;
stop = true;
break;
}
}
}
if(!stop)
{
block = block.next();
blockNumInSearch++;
}
}
if(!stop) return;
blockNumInSearch = bottomBlockNum;
brackets = 0;
stop = false;
int invisibleBlockNum = 0;
while(block.blockNumber() != -1 && !stop)
{
if(block.isVisible() == false) invisibleBlockNum++;
int i;
if(blockNumInSearch == bottomBlockNum) i = bracketPosition-1;
else i = block.text().length()-1;
for( ; i >= 0 ; i-- )
{
if(block.text().at(i) == QChar('}') ) brackets-- ;
else if(block.text().at(i) == QChar('{') )
{
brackets++ ;
if ( brackets == 1 )
{
if(i==0||block.text().at(i-1)==QChar(' ')) topBlockNum = blockNumInSearch-1;
else topBlockNum = blockNumInSearch;
stop = true;
break;
}
}
}
if(!stop)
{
block = block.previous();