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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2015 Victor Anjin <virinext@gmail.com> | |
5 | * Copyright (C) 2019 Soeren Apel <soeren@apelpie.net> | |
6 | * | |
7 | * The MIT License (MIT) | |
8 | * | |
9 | * Copyright (c) 2015 | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in all | |
19 | * copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
28 | */ | |
29 | ||
30 | #include <QApplication> | |
31 | #include <QClipboard> | |
32 | #include <QDebug> | |
33 | #include <QFont> | |
34 | #include <QKeyEvent> | |
35 | #include <QScrollBar> | |
36 | #include <QSize> | |
37 | #include <QPainter> | |
38 | #include <QPaintEvent> | |
39 | ||
40 | #include "QHexView.hpp" | |
41 | ||
42 | const unsigned int BYTES_PER_LINE = 16; | |
43 | const unsigned int HEXCHARS_IN_LINE = BYTES_PER_LINE * 3 - 1; | |
44 | const unsigned int GAP_ADR_HEX = 10; | |
45 | const unsigned int GAP_HEX_ASCII = 10; | |
46 | const unsigned int GAP_ASCII_SLIDER = 5; | |
47 | ||
48 | ||
49 | QHexView::QHexView(QWidget *parent): | |
50 | QAbstractScrollArea(parent), | |
51 | mode_(ChunkedDataMode), | |
52 | data_(nullptr), | |
53 | selectBegin_(0), | |
54 | selectEnd_(0), | |
55 | cursorPos_(0) | |
56 | { | |
57 | setFont(QFont("Courier", 10)); | |
58 | ||
59 | charWidth_ = fontMetrics().boundingRect('X').width(); | |
60 | charHeight_ = fontMetrics().height(); | |
61 | ||
62 | // Determine X coordinates of the three sub-areas | |
63 | posAddr_ = 0; | |
64 | posHex_ = 10 * charWidth_ + GAP_ADR_HEX; | |
65 | posAscii_ = posHex_ + HEXCHARS_IN_LINE * charWidth_ + GAP_HEX_ASCII; | |
66 | ||
67 | setFocusPolicy(Qt::StrongFocus); | |
68 | ||
69 | if (palette().color(QPalette::ButtonText).toHsv().value() > 127) { | |
70 | // Color is bright | |
71 | chunk_colors_.emplace_back(100, 149, 237); // QColorConstants::Svg::cornflowerblue | |
72 | chunk_colors_.emplace_back(60, 179, 113); // QColorConstants::Svg::mediumseagreen | |
73 | chunk_colors_.emplace_back(210, 180, 140); // QColorConstants::Svg::tan | |
74 | } else { | |
75 | // Color is dark | |
76 | chunk_colors_.emplace_back(0, 0, 139); // QColorConstants::Svg::darkblue | |
77 | chunk_colors_.emplace_back(34, 139, 34); // QColorConstants::Svg::forestgreen | |
78 | chunk_colors_.emplace_back(160, 82, 45); // QColorConstants::Svg::sienna | |
79 | } | |
80 | } | |
81 | ||
82 | void QHexView::set_mode(Mode m) | |
83 | { | |
84 | mode_ = m; | |
85 | ||
86 | // This is not expected to be set when data is showing, | |
87 | // so we don't update the viewport here | |
88 | } | |
89 | ||
90 | void QHexView::set_data(const DecodeBinaryClass* data) | |
91 | { | |
92 | data_ = data; | |
93 | ||
94 | size_t size = 0; | |
95 | if (data) { | |
96 | size_t chunks = data_->chunks.size(); | |
97 | for (size_t i = 0; i < chunks; i++) | |
98 | size += data_->chunks[i].data.size(); | |
99 | } | |
100 | data_size_ = size; | |
101 | ||
102 | viewport()->update(); | |
103 | } | |
104 | ||
105 | unsigned int QHexView::get_bytes_per_line() const | |
106 | { | |
107 | return BYTES_PER_LINE; | |
108 | } | |
109 | ||
110 | void QHexView::clear() | |
111 | { | |
112 | verticalScrollBar()->setValue(0); | |
113 | data_ = nullptr; | |
114 | data_size_ = 0; | |
115 | ||
116 | viewport()->update(); | |
117 | } | |
118 | ||
119 | void QHexView::showFromOffset(size_t offset) | |
120 | { | |
121 | if (data_ && (offset < data_size_)) { | |
122 | setCursorPos(offset * 2); | |
123 | ||
124 | int cursorY = cursorPos_ / (2 * BYTES_PER_LINE); | |
125 | verticalScrollBar() -> setValue(cursorY); | |
126 | } | |
127 | ||
128 | viewport()->update(); | |
129 | } | |
130 | ||
131 | QSizePolicy QHexView::sizePolicy() const | |
132 | { | |
133 | return QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding); | |
134 | } | |
135 | ||
136 | pair<size_t, size_t> QHexView::get_selection() const | |
137 | { | |
138 | size_t start = selectBegin_ / 2; | |
139 | size_t end = selectEnd_ / 2; | |
140 | ||
141 | if (start == end) { | |
142 | // Nothing is currently selected | |
143 | start = 0; | |
144 | end = data_size_; | |
145 | } if (end < data_size_) | |
146 | end++; | |
147 | ||
148 | return std::make_pair(start, end); | |
149 | } | |
150 | ||
151 | size_t QHexView::create_hex_line(size_t start, size_t end, QString* dest, | |
152 | bool with_offset, bool with_ascii) | |
153 | { | |
154 | dest->clear(); | |
155 | ||
156 | // Determine start address for the row | |
157 | uint64_t row = start / BYTES_PER_LINE; | |
158 | uint64_t offset = row * BYTES_PER_LINE; | |
159 | end = std::min((uint64_t)end, offset + BYTES_PER_LINE); | |
160 | ||
161 | if (with_offset) | |
162 | dest->append(QString("%1 ").arg(row * BYTES_PER_LINE, 10, 16, QChar('0')).toUpper()); | |
163 | ||
164 | initialize_byte_iterator(offset); | |
165 | for (size_t i = offset; i < offset + BYTES_PER_LINE; i++) { | |
166 | uint8_t value = 0; | |
167 | ||
168 | if (i < end) | |
169 | value = get_next_byte(); | |
170 | ||
171 | if ((i < start) || (i >= end)) | |
172 | dest->append(" "); | |
173 | else | |
174 | dest->append(QString("%1 ").arg(value, 2, 16, QChar('0')).toUpper()); | |
175 | } | |
176 | ||
177 | if (with_ascii) { | |
178 | initialize_byte_iterator(offset); | |
179 | for (size_t i = offset; i < end; i++) { | |
180 | uint8_t value = get_next_byte(); | |
181 | ||
182 | if ((value < 0x20) || (value > 0x7E)) | |
183 | value = '.'; | |
184 | ||
185 | if (i < start) | |
186 | dest->append(' '); | |
187 | else | |
188 | dest->append((char)value); | |
189 | } | |
190 | } | |
191 | ||
192 | return end; | |
193 | } | |
194 | ||
195 | void QHexView::initialize_byte_iterator(size_t offset) | |
196 | { | |
197 | current_chunk_id_ = 0; | |
198 | current_chunk_offset_ = 0; | |
199 | current_offset_ = offset; | |
200 | ||
201 | size_t chunks = data_->chunks.size(); | |
202 | for (size_t i = 0; i < chunks; i++) { | |
203 | size_t size = data_->chunks[i].data.size(); | |
204 | ||
205 | if (offset >= size) { | |
206 | current_chunk_id_++; | |
207 | offset -= size; | |
208 | } else { | |
209 | current_chunk_offset_ = offset; | |
210 | break; | |
211 | } | |
212 | } | |
213 | ||
214 | if (current_chunk_id_ < data_->chunks.size()) | |
215 | current_chunk_ = data_->chunks[current_chunk_id_]; | |
216 | } | |
217 | ||
218 | uint8_t QHexView::get_next_byte(bool* is_next_chunk) | |
219 | { | |
220 | if (is_next_chunk != nullptr) | |
221 | *is_next_chunk = (current_chunk_offset_ == 0); | |
222 | ||
223 | uint8_t v = 0; | |
224 | if (current_chunk_offset_ < current_chunk_.data.size()) | |
225 | v = current_chunk_.data[current_chunk_offset_]; | |
226 | ||
227 | current_offset_++; | |
228 | current_chunk_offset_++; | |
229 | ||
230 | if (current_offset_ > data_size_) { | |
231 | qWarning() << "QHexView::get_next_byte() overran binary data boundary:" << | |
232 | current_offset_ << "of" << data_size_ << "bytes"; | |
233 | return 0xEE; | |
234 | } | |
235 | ||
236 | if ((current_chunk_offset_ == current_chunk_.data.size()) && (current_offset_ < data_size_)) { | |
237 | current_chunk_id_++; | |
238 | current_chunk_offset_ = 0; | |
239 | current_chunk_ = data_->chunks[current_chunk_id_]; | |
240 | } | |
241 | ||
242 | return v; | |
243 | } | |
244 | ||
245 | QSize QHexView::getFullSize() const | |
246 | { | |
247 | size_t width = posAscii_ + (BYTES_PER_LINE * charWidth_); | |
248 | ||
249 | if (verticalScrollBar()->isEnabled()) | |
250 | width += GAP_ASCII_SLIDER + verticalScrollBar()->width(); | |
251 | ||
252 | if (!data_ || (data_size_ == 0)) | |
253 | return QSize(width, 0); | |
254 | ||
255 | size_t height = data_size_ / BYTES_PER_LINE; | |
256 | ||
257 | if (data_size_ % BYTES_PER_LINE) | |
258 | height++; | |
259 | ||
260 | height *= charHeight_; | |
261 | ||
262 | return QSize(width, height); | |
263 | } | |
264 | ||
265 | void QHexView::paintEvent(QPaintEvent *event) | |
266 | { | |
267 | QPainter painter(viewport()); | |
268 | ||
269 | // Calculate and update the widget and paint area sizes | |
270 | QSize widgetSize = getFullSize(); | |
271 | setMinimumWidth(widgetSize.width()); | |
272 | setMaximumWidth(widgetSize.width()); | |
273 | QSize areaSize = viewport()->size() - QSize(0, charHeight_); | |
274 | ||
275 | // Only show scrollbar if the content goes beyond the visible area | |
276 | if (widgetSize.height() > areaSize.height()) { | |
277 | verticalScrollBar()->setEnabled(true); | |
278 | verticalScrollBar()->setPageStep(areaSize.height() / charHeight_); | |
279 | verticalScrollBar()->setRange(0, ((widgetSize.height() - areaSize.height())) / charHeight_ + 1); | |
280 | } else | |
281 | verticalScrollBar()->setEnabled(false); | |
282 | ||
283 | // Fill widget background | |
284 | painter.fillRect(event->rect(), palette().color(QPalette::Base)); | |
285 | ||
286 | if (!data_ || (data_size_ == 0)) { | |
287 | painter.setPen(palette().color(QPalette::Text)); | |
288 | QString s = tr("No data available"); | |
289 | int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2; | |
290 | int y = areaSize.height() / 2; | |
291 | painter.drawText(x, y, s); | |
292 | return; | |
293 | } | |
294 | ||
295 | // Determine first/last line indices | |
296 | size_t firstLineIdx = verticalScrollBar()->value(); | |
297 | ||
298 | size_t lastLineIdx = firstLineIdx + (areaSize.height() / charHeight_); | |
299 | if (lastLineIdx > (data_size_ / BYTES_PER_LINE)) { | |
300 | lastLineIdx = data_size_ / BYTES_PER_LINE; | |
301 | if (data_size_ % BYTES_PER_LINE) | |
302 | lastLineIdx++; | |
303 | } | |
304 | ||
305 | // Fill address area background | |
306 | painter.fillRect(QRect(posAddr_, event->rect().top(), | |
307 | posHex_ - (GAP_ADR_HEX / 2), height()), palette().color(QPalette::Window)); | |
308 | ||
309 | // Paint divider line between hex and ASCII areas | |
310 | int line_x = posAscii_ - (GAP_HEX_ASCII / 2); | |
311 | painter.setPen(palette().color(QPalette::Midlight)); | |
312 | painter.drawLine(line_x, event->rect().top(), line_x, height()); | |
313 | ||
314 | // Paint address area | |
315 | painter.setPen(palette().color(QPalette::ButtonText)); | |
316 | ||
317 | int yStart = 2 * charHeight_; | |
318 | for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) { | |
319 | ||
320 | QString address = QString("%1").arg(lineIdx * 16, 10, 16, QChar('0')).toUpper(); | |
321 | painter.drawText(posAddr_, y, address); | |
322 | y += charHeight_; | |
323 | } | |
324 | ||
325 | // Paint top row with hex offsets | |
326 | painter.setPen(palette().color(QPalette::ButtonText)); | |
327 | for (int offset = 0; offset <= 0xF; offset++) | |
328 | painter.drawText(posHex_ + (1 + offset * 3) * charWidth_, | |
329 | charHeight_, QString::number(offset, 16).toUpper()); | |
330 | ||
331 | // Paint hex values | |
332 | QBrush regular = palette().buttonText(); | |
333 | QBrush selected = palette().highlight(); | |
334 | ||
335 | bool multiple_chunks = (data_->chunks.size() > 1); | |
336 | unsigned int chunk_color = 0; | |
337 | ||
338 | initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE); | |
339 | yStart = 2 * charHeight_; | |
340 | for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) { | |
341 | ||
342 | int x = posHex_; | |
343 | for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) { | |
344 | size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2; | |
345 | ||
346 | // Fetch byte | |
347 | bool is_next_chunk; | |
348 | uint8_t byte_value = get_next_byte(&is_next_chunk); | |
349 | ||
350 | if (is_next_chunk) { | |
351 | chunk_color++; | |
352 | if (chunk_color == chunk_colors_.size()) | |
353 | chunk_color = 0; | |
354 | } | |
355 | ||
356 | if ((pos >= selectBegin_) && (pos < selectEnd_)) { | |
357 | painter.setBackgroundMode(Qt::OpaqueMode); | |
358 | painter.setBackground(selected); | |
359 | painter.setPen(palette().color(QPalette::HighlightedText)); | |
360 | } else { | |
361 | painter.setBackground(regular); | |
362 | painter.setBackgroundMode(Qt::TransparentMode); | |
363 | if (!multiple_chunks) | |
364 | painter.setPen(palette().color(QPalette::Text)); | |
365 | else | |
366 | painter.setPen(chunk_colors_[chunk_color]); | |
367 | } | |
368 | ||
369 | // First nibble | |
370 | QString val = QString::number((byte_value & 0xF0) >> 4, 16).toUpper(); | |
371 | painter.drawText(x, y, val); | |
372 | ||
373 | // Second nibble | |
374 | val = QString::number((byte_value & 0xF), 16).toUpper(); | |
375 | painter.drawText(x + charWidth_, y, val); | |
376 | ||
377 | if ((pos >= selectBegin_) && (pos < selectEnd_ - 1) && (i < BYTES_PER_LINE - 1)) | |
378 | painter.drawText(x + 2 * charWidth_, y, QString(' ')); | |
379 | ||
380 | x += 3 * charWidth_; | |
381 | } | |
382 | ||
383 | y += charHeight_; | |
384 | } | |
385 | ||
386 | // Paint ASCII characters | |
387 | initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE); | |
388 | yStart = 2 * charHeight_; | |
389 | for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) { | |
390 | ||
391 | int x = posAscii_; | |
392 | for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) { | |
393 | // Fetch byte | |
394 | uint8_t ch = get_next_byte(); | |
395 | ||
396 | if ((ch < 0x20) || (ch > 0x7E)) | |
397 | ch = '.'; | |
398 | ||
399 | size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2; | |
400 | if ((pos >= selectBegin_) && (pos < selectEnd_)) { | |
401 | painter.setBackgroundMode(Qt::OpaqueMode); | |
402 | painter.setBackground(selected); | |
403 | painter.setPen(palette().color(QPalette::HighlightedText)); | |
404 | } else { | |
405 | painter.setBackgroundMode(Qt::TransparentMode); | |
406 | painter.setBackground(regular); | |
407 | painter.setPen(palette().color(QPalette::Text)); | |
408 | } | |
409 | ||
410 | painter.drawText(x, y, QString(ch)); | |
411 | x += charWidth_; | |
412 | } | |
413 | ||
414 | y += charHeight_; | |
415 | } | |
416 | ||
417 | // Paint cursor | |
418 | if (hasFocus()) { | |
419 | int x = (cursorPos_ % (2 * BYTES_PER_LINE)); | |
420 | int y = cursorPos_ / (2 * BYTES_PER_LINE); | |
421 | y -= firstLineIdx; | |
422 | int cursorX = (((x / 2) * 3) + (x % 2)) * charWidth_ + posHex_; | |
423 | int cursorY = charHeight_ + y * charHeight_ + 4; | |
424 | painter.fillRect(cursorX, cursorY, 2, charHeight_, palette().color(QPalette::WindowText)); | |
425 | } | |
426 | } | |
427 | ||
428 | void QHexView::keyPressEvent(QKeyEvent *event) | |
429 | { | |
430 | bool setVisible = false; | |
431 | ||
432 | // Cursor movements | |
433 | if (event->matches(QKeySequence::MoveToNextChar)) { | |
434 | setCursorPos(cursorPos_ + 1); | |
435 | resetSelection(cursorPos_); | |
436 | setVisible = true; | |
437 | } | |
438 | if (event->matches(QKeySequence::MoveToPreviousChar)) { | |
439 | setCursorPos(cursorPos_ - 1); | |
440 | resetSelection(cursorPos_); | |
441 | setVisible = true; | |
442 | } | |
443 | ||
444 | if (event->matches(QKeySequence::MoveToEndOfLine)) { | |
445 | setCursorPos(cursorPos_ | ((BYTES_PER_LINE * 2) - 1)); | |
446 | resetSelection(cursorPos_); | |
447 | setVisible = true; | |
448 | } | |
449 | if (event->matches(QKeySequence::MoveToStartOfLine)) { | |
450 | setCursorPos(cursorPos_ | (cursorPos_ % (BYTES_PER_LINE * 2))); | |
451 | resetSelection(cursorPos_); | |
452 | setVisible = true; | |
453 | } | |
454 | if (event->matches(QKeySequence::MoveToPreviousLine)) { | |
455 | setCursorPos(cursorPos_ - BYTES_PER_LINE * 2); | |
456 | resetSelection(cursorPos_); | |
457 | setVisible = true; | |
458 | } | |
459 | if (event->matches(QKeySequence::MoveToNextLine)) { | |
460 | setCursorPos(cursorPos_ + BYTES_PER_LINE * 2); | |
461 | resetSelection(cursorPos_); | |
462 | setVisible = true; | |
463 | } | |
464 | ||
465 | if (event->matches(QKeySequence::MoveToNextPage)) { | |
466 | setCursorPos(cursorPos_ + (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE); | |
467 | resetSelection(cursorPos_); | |
468 | setVisible = true; | |
469 | } | |
470 | if (event->matches(QKeySequence::MoveToPreviousPage)) { | |
471 | setCursorPos(cursorPos_ - (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE); | |
472 | resetSelection(cursorPos_); | |
473 | setVisible = true; | |
474 | } | |
475 | if (event->matches(QKeySequence::MoveToEndOfDocument)) { | |
476 | setCursorPos(data_size_ * 2); | |
477 | resetSelection(cursorPos_); | |
478 | setVisible = true; | |
479 | } | |
480 | if (event->matches(QKeySequence::MoveToStartOfDocument)) { | |
481 | setCursorPos(0); | |
482 | resetSelection(cursorPos_); | |
483 | setVisible = true; | |
484 | } | |
485 | ||
486 | // Select commands | |
487 | if (event->matches(QKeySequence::SelectAll)) { | |
488 | resetSelection(0); | |
489 | setSelection(2 * data_size_); | |
490 | setVisible = true; | |
491 | } | |
492 | if (event->matches(QKeySequence::SelectNextChar)) { | |
493 | int pos = cursorPos_ + 1; | |
494 | setCursorPos(pos); | |
495 | setSelection(pos); | |
496 | setVisible = true; | |
497 | } | |
498 | if (event->matches(QKeySequence::SelectPreviousChar)) { | |
499 | int pos = cursorPos_ - 1; | |
500 | setSelection(pos); | |
501 | setCursorPos(pos); | |
502 | setVisible = true; | |
503 | } | |
504 | if (event->matches(QKeySequence::SelectEndOfLine)) { | |
505 | int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE)) + (2 * BYTES_PER_LINE); | |
506 | setCursorPos(pos); | |
507 | setSelection(pos); | |
508 | setVisible = true; | |
509 | } | |
510 | if (event->matches(QKeySequence::SelectStartOfLine)) { | |
511 | int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE)); | |
512 | setCursorPos(pos); | |
513 | setSelection(pos); | |
514 | setVisible = true; | |
515 | } | |
516 | if (event->matches(QKeySequence::SelectPreviousLine)) { | |
517 | int pos = cursorPos_ - (2 * BYTES_PER_LINE); | |
518 | setCursorPos(pos); | |
519 | setSelection(pos); | |
520 | setVisible = true; | |
521 | } | |
522 | if (event->matches(QKeySequence::SelectNextLine)) { | |
523 | int pos = cursorPos_ + (2 * BYTES_PER_LINE); | |
524 | setCursorPos(pos); | |
525 | setSelection(pos); | |
526 | setVisible = true; | |
527 | } | |
528 | ||
529 | if (event->matches(QKeySequence::SelectNextPage)) { | |
530 | int pos = cursorPos_ + (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE); | |
531 | setCursorPos(pos); | |
532 | setSelection(pos); | |
533 | setVisible = true; | |
534 | } | |
535 | if (event->matches(QKeySequence::SelectPreviousPage)) { | |
536 | int pos = cursorPos_ - (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE); | |
537 | setCursorPos(pos); | |
538 | setSelection(pos); | |
539 | setVisible = true; | |
540 | } | |
541 | if (event->matches(QKeySequence::SelectEndOfDocument)) { | |
542 | int pos = data_size_ * 2; | |
543 | setCursorPos(pos); | |
544 | setSelection(pos); | |
545 | setVisible = true; | |
546 | } | |
547 | if (event->matches(QKeySequence::SelectStartOfDocument)) { | |
548 | setCursorPos(0); | |
549 | setSelection(0); | |
550 | setVisible = true; | |
551 | } | |
552 | ||
553 | if (event->matches(QKeySequence::Copy) && (data_)) { | |
554 | QString text; | |
555 | ||
556 | initialize_byte_iterator(selectBegin_ / 2); | |
557 | ||
558 | size_t selectedSize = (selectEnd_ - selectBegin_ + 1) / 2; | |
559 | for (size_t i = 0; i < selectedSize; i++) { | |
560 | uint8_t byte_value = get_next_byte(); | |
561 | ||
562 | QString s = QString::number((byte_value & 0xF0) >> 4, 16).toUpper() + | |
563 | QString::number((byte_value & 0xF), 16).toUpper() + " "; | |
564 | text += s; | |
565 | ||
566 | if (i % BYTES_PER_LINE == (BYTES_PER_LINE - 1)) | |
567 | text += "\n"; | |
568 | } | |
569 | ||
570 | QClipboard *clipboard = QApplication::clipboard(); | |
571 | clipboard->setText(text, QClipboard::Clipboard); | |
572 | if (clipboard->supportsSelection()) | |
573 | clipboard->setText(text, QClipboard::Selection); | |
574 | } | |
575 | ||
576 | if (setVisible) | |
577 | ensureVisible(); | |
578 | ||
579 | viewport()->update(); | |
580 | } | |
581 | ||
582 | void QHexView::mouseMoveEvent(QMouseEvent *event) | |
583 | { | |
584 | int actPos = cursorPosFromMousePos(event->pos()); | |
585 | setCursorPos(actPos); | |
586 | setSelection(actPos); | |
587 | ||
588 | viewport()->update(); | |
589 | } | |
590 | ||
591 | void QHexView::mousePressEvent(QMouseEvent *event) | |
592 | { | |
593 | int cPos = cursorPosFromMousePos(event->pos()); | |
594 | ||
595 | if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) && (event->button() == Qt::LeftButton)) | |
596 | setSelection(cPos); | |
597 | else | |
598 | resetSelection(cPos); | |
599 | ||
600 | setCursorPos(cPos); | |
601 | ||
602 | viewport()->update(); | |
603 | } | |
604 | ||
605 | size_t QHexView::cursorPosFromMousePos(const QPoint &position) | |
606 | { | |
607 | size_t pos = -1; | |
608 | ||
609 | if (((size_t)position.x() >= posHex_) && | |
610 | ((size_t)position.x() < (posHex_ + HEXCHARS_IN_LINE * charWidth_))) { | |
611 | ||
612 | // Note: We add 1.5 character widths so that selection across | |
613 | // byte gaps is smoother | |
614 | size_t x = (position.x() + (1.5 * charWidth_ / 2) - posHex_) / charWidth_; | |
615 | ||
616 | // Note: We allow only full bytes to be selected, not nibbles, | |
617 | // so we round to the nearest byte gap | |
618 | x = (2 * x + 1) / 3; | |
619 | ||
620 | size_t firstLineIdx = verticalScrollBar()->value(); | |
621 | size_t y = ((position.y() / charHeight_) - 1) * 2 * BYTES_PER_LINE; | |
622 | pos = x + y + firstLineIdx * BYTES_PER_LINE * 2; | |
623 | } | |
624 | ||
625 | size_t max_pos = data_size_ * 2; | |
626 | ||
627 | return std::min(pos, max_pos); | |
628 | } | |
629 | ||
630 | void QHexView::resetSelection() | |
631 | { | |
632 | selectBegin_ = selectInit_; | |
633 | selectEnd_ = selectInit_; | |
634 | } | |
635 | ||
636 | void QHexView::resetSelection(int pos) | |
637 | { | |
638 | if (pos < 0) | |
639 | pos = 0; | |
640 | ||
641 | selectInit_ = pos; | |
642 | selectBegin_ = pos; | |
643 | selectEnd_ = pos; | |
644 | } | |
645 | ||
646 | void QHexView::setSelection(int pos) | |
647 | { | |
648 | if (pos < 0) | |
649 | pos = 0; | |
650 | ||
651 | if ((size_t)pos >= selectInit_) { | |
652 | selectEnd_ = pos; | |
653 | selectBegin_ = selectInit_; | |
654 | } else { | |
655 | selectBegin_ = pos; | |
656 | selectEnd_ = selectInit_; | |
657 | } | |
658 | } | |
659 | ||
660 | void QHexView::setCursorPos(int position) | |
661 | { | |
662 | if (position < 0) | |
663 | position = 0; | |
664 | ||
665 | int max_pos = data_size_ * 2; | |
666 | ||
667 | if (position > max_pos) | |
668 | position = max_pos; | |
669 | ||
670 | cursorPos_ = position; | |
671 | } | |
672 | ||
673 | void QHexView::ensureVisible() | |
674 | { | |
675 | QSize areaSize = viewport()->size(); | |
676 | ||
677 | int firstLineIdx = verticalScrollBar()->value(); | |
678 | int lastLineIdx = firstLineIdx + areaSize.height() / charHeight_; | |
679 | ||
680 | int cursorY = cursorPos_ / (2 * BYTES_PER_LINE); | |
681 | ||
682 | if (cursorY < firstLineIdx) | |
683 | verticalScrollBar()->setValue(cursorY); | |
684 | else | |
685 | if(cursorY >= lastLineIdx) | |
686 | verticalScrollBar()->setValue(cursorY - areaSize.height() / charHeight_ + 1); | |
687 | } |