| 418 | } |
| 419 | |
| 420 | void CHexControl::RecalcLayout() { |
| 421 | if (m_Buffer == nullptr) { |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | CRect rc; |
| 426 | GetClientRect(&rc); |
| 427 | |
| 428 | auto lines = int((m_Buffer->GetSize() + (m_BytesPerLine - 1)) / m_BytesPerLine); |
| 429 | if (m_Buffer->GetSize() % m_BytesPerLine != 0) |
| 430 | lines++; |
| 431 | |
| 432 | m_Lines = rc.Height() / m_CharHeight; |
| 433 | |
| 434 | m_AddressDigits = m_Buffer->GetSize() < 1LL << 16 ? 4 : 8; |
| 435 | |
| 436 | SCROLLINFO si; |
| 437 | si.cbSize = sizeof(si); |
| 438 | si.fMask = SIF_PAGE | SIF_RANGE; |
| 439 | si.nMin = 0; |
| 440 | si.nMax = lines - 1; |
| 441 | si.nPage = rc.bottom / m_CharHeight; |
| 442 | SetScrollInfo(SB_VERT, &si); |
| 443 | |
| 444 | auto chars = m_AddressDigits + m_BytesPerLine * 2 + (m_BytesPerLine / m_DataSize) + m_BytesPerLine; |
| 445 | |
| 446 | si.nMax = static_cast<int>(chars) - 1; |
| 447 | si.nPage = rc.right / m_CharWidth; |
| 448 | SetScrollInfo(SB_HORZ, &si); |
| 449 | |
| 450 | si.fMask = SIF_POS; |
| 451 | GetScrollInfo(SB_VERT, &si); |
| 452 | |
| 453 | m_StartOffset = si.nPos * m_BytesPerLine; |
| 454 | ATLASSERT(m_StartOffset >= 0); |
| 455 | if (m_StartOffset + m_Lines * m_BytesPerLine >= m_Buffer->GetSize()) { |
| 456 | m_StartOffset = m_Buffer->GetSize() - (m_Lines - 1) * m_BytesPerLine; |
| 457 | if (m_StartOffset < 0) |
| 458 | m_StartOffset = 0; |
| 459 | m_StartOffset = m_StartOffset - m_StartOffset % m_BytesPerLine; |
| 460 | ATLASSERT(m_StartOffset >= 0); |
| 461 | } |
| 462 | m_EndOffset = m_StartOffset + m_Lines * m_BytesPerLine; |
| 463 | if (m_EndOffset > m_Buffer->GetSize()) |
| 464 | m_EndOffset = m_Buffer->GetSize(); |
| 465 | RedrawWindow(); |
| 466 | } |
| 467 | |
| 468 | void CHexControl::InitFontMetrics() { |
| 469 | if (m_Font) |