CtrlMemView.cpp

#include <cctype>
#include <cmath>
#include <sstream>

#include "ext/xxhash.h"
#include "Common/StringUtils.h"
#include "Core/Config.h"
#include "Core/System.h"
#include "Core/MemMap.h"
#include "Core/Reporting.h"
#include "Core/RetroAchievements.h"
#include "Windows/W32Util/ContextMenu.h"
#include "Windows/W32Util/Misc.h"
#include "Windows/InputBox.h"
#include "Windows/main.h"
#include "Windows/resource.h"
#include "Common/System/Display.h"

#include "Debugger_Disasm.h"
#include "DebuggerShared.h"
#include "CtrlMemView.h"
#include "DumpMemoryWindow.h"

wchar_t CtrlMemView::szClassName[] = L"CtrlMemView";

static constexpr UINT_PTR IDT_REDRAW_DELAYED = 0xC0DE0001;
static constexpr UINT REDRAW_DELAY = 1000 / 60;
// We also redraw regularly, since data changes during runtime.
static constexpr UINT_PTR IDT_REDRAW_AUTO = 0xC0DE0002;
static constexpr UINT REDRAW_INTERVAL = 1000;

CtrlMemView::CtrlMemView(HWND _wnd) {
	wnd=_wnd;
	SetWindowLongPtr(wnd, GWLP_USERDATA, (LONG_PTR)this);
	SetWindowLong(wnd, GWL_STYLE, GetWindowLong(wnd,GWL_STYLE) | WS_VSCROLL);
	SetScrollRange(wnd, SB_VERT, -1,1,TRUE);

	const float fontScale = 1.0f / g_display.dpi_scale_real_y;
	charWidth_ = g_Config.iFontWidth * fontScale;
	rowHeight_ = g_Config.iFontHeight * fontScale;
	offsetPositionY_ = offsetLine * rowHeight_;

	font = CreateFont(rowHeight_, charWidth_, 0, 0,
		FW_DONTCARE, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH,
		L"Lucida Console");
	underlineFont = CreateFont(rowHeight_, charWidth_, 0, 0,
		FW_DONTCARE, FALSE, TRUE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH,
		L"Lucida Console");

	windowStart_ = curAddress_;
	selectRangeStart_ = curAddress_;
	selectRangeEnd_ = curAddress_ + 1;
	lastSelectReset_ = curAddress_;

	addressStartX_ = charWidth_;
	hexStartX_ = addressStartX_ + 9 * charWidth_;
	asciiStartX_ = hexStartX_ + (rowSize_ * 3 + 1) * charWidth_;

	// set redraw timer
	SetTimer(wnd, IDT_REDRAW_AUTO, REDRAW_INTERVAL, nullptr);
}

CtrlMemView::~CtrlMemView() {
	DeleteObject(font);
	DeleteObject(underlineFont);
}

void CtrlMemView::init() {
    WNDCLASSEX wc;
    
    wc.cbSize         = sizeof(wc);
    wc.lpszClassName  = szClassName;
    wc.hInstance      = GetModuleHandle(0);
    wc.lpfnWndProc    = CtrlMemView::wndProc;
    wc.hCursor        = LoadCursor (NULL, IDC_ARROW);
    wc.hIcon          = 0;
    wc.lpszMenuName   = 0;
    wc.hbrBackground  = (HBRUSH)GetSysColorBrush(COLOR_WINDOW);
    wc.style          = 0;
    wc.cbClsExtra     = 0;
	wc.cbWndExtra     = sizeof( CtrlMemView * );
    wc.hIconSm        = 0;
	
	
    RegisterClassEx(&wc);
}

void CtrlMemView::deinit() {
	//UnregisterClass(szClassName, hInst)
}


LRESULT CALLBACK CtrlMemView::wndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	CtrlMemView *ccp = CtrlMemView::getFrom(hwnd);
	static bool lmbDown=false,rmbDown=false;

    switch(msg) {
    case WM_NCCREATE:
        // Allocate a new CustCtrl structure for this window.
        ccp = new CtrlMemView(hwnd);
		
        // Continue with window creation.
        return ccp != NULL;
		
		// Clean up when the window is destroyed.
    case WM_NCDESTROY:
        delete ccp;
        break;
	case WM_SETFONT:
		break;
	case WM_SIZE:
		ccp->redraw();
		break;
	case WM_PAINT:
		ccp->onPaint(wParam,lParam);
		break;	
	case WM_VSCROLL:
		ccp->onVScroll(wParam,lParam);
		break;
	case WM_MOUSEWHEEL:
		if (GET_WHEEL_DELTA_WPARAM(wParam) > 0) {
			ccp->ScrollWindow(-3, GotoModeFromModifiers(false));
		} else if (GET_WHEEL_DELTA_WPARAM(wParam) < 0) {
			ccp->ScrollWindow(3, GotoModeFromModifiers(false));
		}
		break;
	case WM_ERASEBKGND:
		return FALSE;
	case WM_KEYDOWN:
		ccp->onKeyDown(wParam,lParam);
		return 0;
	case WM_CHAR:
		ccp->onChar(wParam,lParam);
		return 0;
	case WM_KEYUP:
		return 0;
	case WM_LBUTTONDOWN: SetFocus(hwnd); lmbDown=true; ccp->onMouseDown(wParam,lParam,1); break;
	case WM_RBUTTONDOWN: SetFocus(hwnd); rmbDown=true; ccp->onMouseDown(wParam,lParam,2); break;
	case WM_MOUSEMOVE:   ccp->onMouseMove(wParam,lParam,(lmbDown?1:0) | (rmbDown?2:0)); break;
	case WM_LBUTTONUP:   lmbDown=false; ccp->onMouseUp(wParam,lParam,1); break;
	case WM_RBUTTONUP:   rmbDown=false; ccp->onMouseUp(wParam,lParam,2); break;
	case WM_SETFOCUS:
		SetFocus(hwnd);
		ccp->hasFocus_ = true;
		ccp->redraw();
		break;
	case WM_KILLFOCUS:
		ccp->hasFocus_ = false;
		ccp->redraw();
		break;
	case WM_GETDLGCODE:	// we want to process the arrow keys and all characters ourselves
		return DLGC_WANTARROWS|DLGC_WANTCHARS|DLGC_WANTTAB;
		break;
	case WM_TIMER:
		// This is actually delayed too, using another timer.  That way we won't update twice.
		if (wParam == IDT_REDRAW_AUTO && IsWindowVisible(ccp->wnd))
			ccp->redraw();

		if (wParam == IDT_REDRAW_DELAYED) {
			InvalidateRect(hwnd, nullptr, FALSE);
			UpdateWindow(hwnd);
			ccp->redrawScheduled_ = false;
			KillTimer(hwnd, wParam);
		}
		break;
    default:
        break;
    }
	
    return DefWindowProc(hwnd, msg, wParam, lParam);
}


CtrlMemView *CtrlMemView::getFrom(HWND hwnd) {
	return (CtrlMemView *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
}


void CtrlMemView::onPaint(WPARAM wParam, LPARAM lParam) {
	if (Achievements::HardcoreModeActive())
		return;

	auto memLock = Memory::Lock();

	// draw to a bitmap for double buffering
	PAINTSTRUCT ps;	
	HDC actualHdc = BeginPaint(wnd, &ps);
	HDC hdc = CreateCompatibleDC(actualHdc);
	HBITMAP hBM = CreateCompatibleBitmap(actualHdc, rect_.right - rect_.left, rect_.bottom - rect_.top);
	SelectObject(hdc, hBM);

	SetBkMode(hdc,OPAQUE);
	HPEN standardPen = CreatePen(0,0,0xFFFFFF);
	HBRUSH standardBrush = CreateSolidBrush(0xFFFFFF);
	COLORREF standardBG = GetBkColor(hdc);

	HPEN oldPen = (HPEN) SelectObject(hdc,standardPen);
	HBRUSH oldBrush = (HBRUSH) SelectObject(hdc,standardBrush);
   	HFONT oldFont = (HFONT) SelectObject(hdc,(HGDIOBJ)font);

	// white background
	SelectObject(hdc,standardPen);
	SelectObject(hdc,standardBrush);
	Rectangle(hdc, 0, 0, rect_.right, rect_.bottom);

	if (displayOffsetScale_)
		drawOffsetScale(hdc);

	std::vector<MemBlockInfo> memRangeInfo = FindMemInfoByFlag(highlightFlags_, windowStart_, (visibleRows_ + 1) * rowSize_);

	COLORREF lastTextCol = 0x000000;
	COLORREF lastBGCol = standardBG;
	auto setTextColors = [&](COLORREF fg, COLORREF bg) {
		if (lastTextCol != fg) {
			SetTextColor(hdc, fg);
			lastTextCol = fg;
		}
		if (lastBGCol != bg) {
			SetBkColor(hdc, bg);
			lastBGCol = bg;
		}
	};

	_assert_msg_(((windowStart_ | rowSize_) & 3) == 0, "readMemory() can't handle unaligned reads");

	// draw one extra row that may be partially visible
	for (int i = 0; i < visibleRows_ + 1; i++) {
		int rowY = rowHeight_ * i;
		// Skip the first X rows to make space for the offsets.
		if (displayOffsetScale_)
			rowY += rowHeight_ * offsetSpace;

		char temp[32];
		uint32_t address = windowStart_ + i * rowSize_;
		snprintf(temp, sizeof(temp), "%08X", address);

		setTextColors(0x600000, standardBG);
		TextOutA(hdc, addressStartX_, rowY, temp, (int)strlen(temp));

		union {
			uint32_t words[4];
			uint8_t bytes[16];
		} memory;
		int valid = debugger_ != nullptr && debugger_->isAlive() ? Memory::ValidSize(address, 16) / 4 : 0;
		for (int i = 0; i < valid; ++i) {
			memory.words[i] = debugger_->readMemory(address + i * 4);
		}

		for (int j = 0; j < rowSize_; j++) {
			const uint32_t byteAddress = (address + j) & ~0xC0000000;
			std::string tag;
			bool tagContinues = false;
			for (auto info : memRangeInfo) {
				if (info.start <= byteAddress && info.start + info.size > byteAddress) {
					tag = info.tag;
					tagContinues = byteAddress + 1 < info.start + info.size;
				}
			}

			int hexX = hexStartX_ + j * 3 * charWidth_;
			int hexLen = 2;
			int asciiX = asciiStartX_ + j * (charWidth_ + 2);

			char c;
			if (valid) {
				snprintf(temp, sizeof(temp), "%02X ", memory.bytes[j]);
				c = (char)memory.bytes[j];
				if (memory.bytes[j] < 32 || memory.bytes[j] >= 128)
					c = '.';
			} else {
				truncate_cpy(temp, "??");
				c = '.';
			}

			COLORREF hexBGCol = standardBG;
			COLORREF hexTextCol = 0x000000;
			COLORREF continueBGCol = standardBG;
			COLORREF asciiBGCol = standardBG;
			COLORREF asciiTextCol = 0x000000;
			int underline = -1;

			if (address + j >= selectRangeStart_ && address + j < selectRangeEnd_ && !searching_) {
				if (asciiSelected_) {
					hexBGCol = 0xC0C0C0;
					hexTextCol = 0x000000;
					asciiBGCol = hasFocus_ ? 0xFF9933 : 0xC0C0C0;
					asciiTextCol = hasFocus_ ? 0xFFFFFF : 0x000000;
				} else {
					hexBGCol = hasFocus_ ? 0xFF9933 : 0xC0C0C0;
					hexTextCol = hasFocus_ ? 0xFFFFFF : 0x000000;
					asciiBGCol = 0xC0C0C0;
					asciiTextCol = 0x000000;
					if (address + j == curAddress_)
						underline = selectedNibble_;
				}
				if (!tag.empty() && tagContinues) {
					continueBGCol = pickTagColor(tag);
				}
			} else if (!tag.empty()) {
				hexBGCol = pickTagColor(tag);
				continueBGCol = hexBGCol;
				asciiBGCol = pickTagColor(tag);
				hexLen = tagContinues ? 3 : 2;
			}

			setTextColors(hexTextCol, hexBGCol);
			if (underline >= 0) {
				SelectObject(hdc, underline == 0 ? (HGDIOBJ)underlineFont : (HGDIOBJ)font);
				TextOutA(hdc, hexX, rowY, &temp[0], 1);
				SelectObject(hdc, underline == 0 ? (HGDIOBJ)font : (HGDIOBJ)underlineFont);
				TextOutA(hdc, hexX + charWidth_, rowY, &temp[1], 1);
				SelectObject(hdc, (HGDIOBJ)font);

				// If the tag keeps going, draw the BG too.
				if (continueBGCol != standardBG) {
					setTextColors(0x000000, continueBGCol);
					TextOutA(hdc, hexX + charWidth_ * 2, rowY, &temp[2], 1);
				}
			} else {
				if (continueBGCol != hexBGCol) {
					TextOutA(hdc, hexX, rowY, temp, 2);
					setTextColors(0x000000, continueBGCol);
					TextOutA(hdc, hexX + charWidth_ * 2, rowY, &temp[2], 1);
				} else {
					TextOutA(hdc, hexX, rowY, temp, hexLen);
				}
			}

			setTextColors(asciiTextCol, asciiBGCol);
			TextOutA(hdc, asciiX, rowY, &c, 1);
		}
	}

	setTextColors(0x000000, standardBG);
	SelectObject(hdc,oldFont);
	SelectObject(hdc,oldPen);
	SelectObject(hdc,oldBrush);
	
	// copy bitmap to the actual hdc
	BitBlt(actualHdc, 0, 0, rect_.right, rect_.bottom, hdc, 0, 0, SRCCOPY);
	DeleteObject(hBM);
	DeleteDC(hdc);

	DeleteObject(standardPen);
	DeleteObject(standardBrush);
	
	EndPaint(wnd, &ps);
}

void CtrlMemView::onVScroll(WPARAM wParam, LPARAM lParam) {
	switch (wParam & 0xFFFF) {
	case SB_LINEDOWN:
		ScrollWindow(1, GotoModeFromModifiers(false));
		break;
	case SB_LINEUP:
		ScrollWindow(-1, GotoModeFromModifiers(false));
		break;
	case SB_PAGEDOWN:
		ScrollWindow(visibleRows_, GotoModeFromModifiers(false));
		break;
	case SB_PAGEUP:
		ScrollWindow(-visibleRows_, GotoModeFromModifiers(false));
		break;
	default:
		return;
	}
}

void CtrlMemView::onKeyDown(WPARAM wParam, LPARAM lParam) {
	if (KeyDownAsync(VK_CONTROL)) {
		switch (tolower(wParam & 0xFFFF)) {
		case 'g':
			{
				u32 addr;
				if (executeExpressionWindow(wnd, debugger_, addr) == false)
					return;
				gotoAddr(addr);
				return;
			}
			break;
		case 'f':
		case 's':
			search(false);
			return;
		case 'c':
			search(true);
			return;
		}
	}

	switch (wParam & 0xFFFF) {
	case VK_DOWN:
		ScrollCursor(rowSize_, GotoModeFromModifiers(false));
		break;
	case VK_UP:
		ScrollCursor(-rowSize_, GotoModeFromModifiers(false));
		break;
	case VK_LEFT:
		ScrollCursor(-1, GotoModeFromModifiers(false));
		break;
	case VK_RIGHT:
		ScrollCursor(1, GotoModeFromModifiers(false));
		break;
	case VK_NEXT:
		ScrollWindow(visibleRows_, GotoModeFromModifiers(false));
		break;
	case VK_PRIOR:
		ScrollWindow(-visibleRows_, GotoModeFromModifiers(false));
		break;
	case VK_TAB:
		SendMessage(GetParent(wnd),WM_DEB_TABPRESSED,0,0);
		break;
	default:
		return;
	}
}

void CtrlMemView::onChar(WPARAM wParam, LPARAM lParam) {
	auto memLock = Memory::Lock();
	if (!PSP_IsInited())
		return;

	if (KeyDownAsync(VK_CONTROL) || wParam == VK_TAB)
		return;

	if (!Memory::IsValidAddress(curAddress_)) {
		ScrollCursor(1, GotoMode::RESET);
		return;
	}

	bool active = Core_IsActive();
	if (active)
		Core_Break(BreakReason::MemoryAccess, curAddress_);

	if (asciiSelected_) {
		Memory::WriteUnchecked_U8((u8)wParam, curAddress_);
		ScrollCursor(1, GotoMode::RESET);
	} else {
		wParam = tolower(wParam);
		int inputValue = -1;

		if (wParam >= '0' && wParam <= '9') inputValue = wParam - '0';
		if (wParam >= 'a' && wParam <= 'f') inputValue = wParam -'a' + 10;

		if (inputValue >= 0) {
			int shiftAmount = (1 - selectedNibble_) * 4;

			u8 oldValue = Memory::ReadUnchecked_U8(curAddress_);
			oldValue &= ~(0xF << shiftAmount);
			u8 newValue = oldValue | (inputValue << shiftAmount);
			Memory::WriteUnchecked_U8(newValue, curAddress_);
			ScrollCursor(1, GotoMode::RESET);
		}
	}

	Reporting::NotifyDebugger();
	if (active)
		Core_Resume();
}

void CtrlMemView::redraw() {
	GetClientRect(wnd, &rect_);
	visibleRows_ = rect_.bottom / rowHeight_;

	if (displayOffsetScale_) {
		// visibleRows_ is calculated based on the size of the control, but X rows have already been used for the offsets and are no longer usable
		visibleRows_ -= offsetSpace;
	}

	if (!redrawScheduled_) {
		SetTimer(wnd, IDT_REDRAW_DELAYED, REDRAW_DELAY, nullptr);
		redrawScheduled_ = true;
	}
}

CtrlMemView::GotoMode CtrlMemView::GotoModeFromModifiers(bool isRightClick) {
	GotoMode mode = GotoMode::RESET;
	if (isRightClick) {
		mode = GotoMode::RESET_IF_OUTSIDE;
	} else if (KeyDownAsync(VK_SHIFT)) {
		if (KeyDownAsync(VK_CONTROL))
			mode = GotoMode::EXTEND;
		else
			mode = GotoMode::FROM_CUR;
	}
	return mode;
}

void CtrlMemView::onMouseDown(WPARAM wParam, LPARAM lParam, int button) {
	if (Achievements::HardcoreModeActive())
		return;

	int x = LOWORD(lParam); 
	int y = HIWORD(lParam);

	GotoPoint(x, y, GotoModeFromModifiers(button == 2));
}

void CtrlMemView::onMouseUp(WPARAM wParam, LPARAM lParam, int button) {
	if (Achievements::HardcoreModeActive())
		return;

	if (button == 2) {
		int32_t selectedSize = selectRangeEnd_ - selectRangeStart_;
		bool enable16 = !asciiSelected_ && (selectedSize == 1 || (selectedSize & 1) == 0);
		bool enable32 = !asciiSelected_ && (selectedSize == 1 || (selectedSize & 3) == 0);

		HMENU menu = GetContextMenu(ContextMenuID::MEMVIEW);
		EnableMenuItem(menu, ID_MEMVIEW_COPYVALUE_16, enable16 ? MF_ENABLED : MF_GRAYED);
		EnableMenuItem(menu, ID_MEMVIEW_COPYVALUE_32, enable32 ? MF_ENABLED : MF_GRAYED);
		EnableMenuItem(menu, ID_MEMVIEW_COPYFLOAT_32, enable32 ? MF_ENABLED : MF_GRAYED);

		switch (TriggerContextMenu(ContextMenuID::MEMVIEW, wnd, ContextPoint::FromEvent(lParam))) {
		case ID_MEMVIEW_DUMP:
			{
				DumpMemoryWindow dump(wnd, debugger_);
				dump.exec();
				break;
			}
			
		case ID_MEMVIEW_COPYVALUE_8:
			{
				auto memLock = Memory::Lock();
				size_t tempSize = 3 * selectedSize + 1;
				char *temp = new char[tempSize];
				memset(temp, 0, tempSize);

				// it's admittedly not really useful like this
				if (asciiSelected_) {
					for (uint32_t p = selectRangeStart_; p != selectRangeEnd_; ++p) {
						uint8_t c = Memory::IsValidAddress(p) ? Memory::ReadUnchecked_U8(p) : '.';
						if (c < 32 || c >= 128)
							c = '.';
						temp[p - selectRangeStart_] = c;
					}
				} else {
					char *pos = temp;
					for (uint32_t p = selectRangeStart_; p != selectRangeEnd_; ++p) {
						uint8_t c = Memory::IsValidAddress(p) ? Memory::ReadUnchecked_U8(p) : 0xFF;
						pos += snprintf(pos, tempSize - (pos - temp + 1), "%02X ", c);
					}
					// Clear the last space.
					if (pos > temp)
						*(pos - 1) = '\0';
				}
				W32Util::CopyTextToClipboard(wnd, temp);
				delete[] temp;
			}
			break;
			
		case ID_MEMVIEW_COPYVALUE_16:
			{
				auto memLock = Memory::Lock();
				size_t tempSize = 5 * ((selectedSize + 1) / 2) + 1;
				char *temp = new char[tempSize];
				memset(temp, 0, tempSize);

				char *pos = temp;
				for (uint32_t p = selectRangeStart_; p < selectRangeEnd_; p += 2) {
					uint16_t c = Memory::IsValidRange(p, 2) ? Memory::ReadUnchecked_U16(p) : 0xFFFF;
					pos += snprintf(pos, tempSize - (pos - temp + 1), "%04X ", c);
				}
				// Clear the last space.
				if (pos > temp)
					*(pos - 1) = '\0';

				W32Util::CopyTextToClipboard(wnd, temp);
				delete[] temp;
			}
			break;
			
		case ID_MEMVIEW_COPYVALUE_32:
			{
				auto memLock = Memory::Lock();
				size_t tempSize = 9 * ((selectedSize + 3) / 4) + 1;
				char *temp = new char[tempSize];
				memset(temp, 0, tempSize);

				char *pos = temp;
				for (uint32_t p = selectRangeStart_; p < selectRangeEnd_; p += 4) {
					uint32_t c = Memory::IsValidRange(p, 4) ? Memory::ReadUnchecked_U32(p) : 0xFFFFFFFF;
					pos += snprintf(pos, tempSize - (pos - temp + 1), "%08X ", c);
				}
				// Clear the last space.
				if (pos > temp)
					*(pos - 1) = '\0';

				W32Util::CopyTextToClipboard(wnd, temp);
				delete[] temp;
			}
			break;

		case ID_MEMVIEW_COPYFLOAT_32:
		{
			auto memLock = Memory::Lock();
			std::ostringstream stream;
			stream << (Memory::IsValidAddress(curAddress_) ? Memory::Read_Float(curAddress_) : NAN);
			auto temp_string = stream.str();
			W32Util::CopyTextToClipboard(wnd, temp_string.c_str());
		}
		break;

		case ID_MEMVIEW_EXTENTBEGIN:
		{
			std::vector<MemBlockInfo> memRangeInfo = FindMemInfoByFlag(highlightFlags_, curAddress_, 1);
			uint32_t addr = curAddress_;
			for (MemBlockInfo info : memRangeInfo) {
				addr = info.start;
			}
			gotoAddr(addr);
			break;
		}

		case ID_MEMVIEW_EXTENTEND:
		{
			std::vector<MemBlockInfo> memRangeInfo = FindMemInfoByFlag(highlightFlags_, curAddress_, 1);
			uint32_t addr = curAddress_;
			for (MemBlockInfo info : memRangeInfo) {
				addr = info.start + info.size - 1;
			}
			gotoAddr(addr);
			break;
		}

		case ID_MEMVIEW_COPYADDRESS:
			{
				char temp[24];
				snprintf(temp, sizeof(temp), "0x%08X", curAddress_);
				W32Util::CopyTextToClipboard(wnd, temp);
			}
			break;

		case ID_MEMVIEW_GOTOINDISASM:
			if (disasmWindow) {
				disasmWindow->Goto(curAddress_);
				disasmWindow->Show(true);
			}
			break;
		}
		return;
	}

	int x = LOWORD(lParam); 
	int y = HIWORD(lParam);
	ReleaseCapture();
	GotoPoint(x, y, GotoModeFromModifiers(button == 2));
}

void CtrlMemView::onMouseMove(WPARAM wParam, LPARAM lParam, int button) {
	if (Achievements::HardcoreModeActive())
		return;

	int x = LOWORD(lParam);
	int y = HIWORD(lParam);

	if (button & 1) {
		GotoPoint(x, y, GotoModeFromModifiers(button == 2));
	}
}

void CtrlMemView::updateStatusBarText() {
	std::vector<MemBlockInfo> memRangeInfo = FindMemInfoByFlag(highlightFlags_, curAddress_, 1);

	char text[512];
	snprintf(text, sizeof(text), "%08X", curAddress_);
	// There should only be one.
	for (MemBlockInfo info : memRangeInfo) {
		snprintf(text, sizeof(text), "%08X - %s %08X-%08X (at PC %08X / %lld ticks)", curAddress_, info.tag.c_str(), info.start, info.start + info.size, info.pc, info.ticks);
	}

	SendMessage(GetParent(wnd), WM_DEB_SETSTATUSBARTEXT, 0, (LPARAM)text);
}

void CtrlMemView::UpdateSelectRange(uint32_t target, GotoMode mode) {
	if (mode == GotoMode::FROM_CUR && lastSelectReset_ == 0) {
		lastSelectReset_ = curAddress_;
	}

	switch (mode) {
	case GotoMode::RESET:
		selectRangeStart_ = target;
		selectRangeEnd_ = target + 1;
		lastSelectReset_ = target;
		break;

	case GotoMode::RESET_IF_OUTSIDE:
		if (target < selectRangeStart_ || target >= selectRangeEnd_) {
			selectRangeStart_ = target;
			selectRangeEnd_ = target + 1;
			lastSelectReset_ = target;
		}
		break;

	case GotoMode::FROM_CUR:
		selectRangeStart_ = lastSelectReset_ > target ? target : lastSelectReset_;
		selectRangeEnd_ = selectRangeStart_ == lastSelectReset_ ? target + 1 : lastSelectReset_ + 1;
		break;

	case GotoMode::EXTEND:
		if (target < selectRangeStart_)
			selectRangeStart_ = target;
		if (target > selectRangeEnd_)
			selectRangeEnd_ = target;
		break;
	}
	curAddress_ = target;
}

void CtrlMemView::GotoPoint(int x, int y, GotoMode mode) {
	int line = y / rowHeight_;
	int lineAddress = windowStart_ + line * rowSize_;

	if (displayOffsetScale_) {
		// ignore clicks on the offset space
		if (line < offsetSpace) {
			updateStatusBarText();
			redraw();
			return;
		}
		// since each row has been written X rows down from where the window expected it to be written the target of the clicks must be adjusted
		lineAddress -= rowSize_ * offsetSpace;
	}

	uint32_t target = curAddress_;
	uint32_t targetNibble = selectedNibble_;
	bool targetAscii = asciiSelected_;
	if (x >= asciiStartX_) {
		int col = (x - asciiStartX_) / (charWidth_ + 2);
		if (col >= rowSize_)
			return;
		
		targetAscii = true;
		target = lineAddress + col;
		targetNibble = 0;
	} else if (x >= hexStartX_) {
		int col = (x - hexStartX_) / charWidth_;
		if ((col/3) >= rowSize_)
			return;

		switch (col % 3) {
		case 0: targetNibble = 0; break;
		case 1: targetNibble = 1; break;
		case 2: return;		// don't change position when clicking on the space
		}

		targetAscii = false;
		target = lineAddress + col / 3;
	}

	if (target != curAddress_ || targetNibble != selectedNibble_ || targetAscii != asciiSelected_) {
		selectedNibble_ = targetNibble;
		asciiSelected_ = targetAscii;
		UpdateSelectRange(target, mode);

		updateStatusBarText();
		redraw();
	}
}

void CtrlMemView::gotoAddr(unsigned int addr) {
	int lines = rect_.bottom / rowHeight_;
	u32 windowEnd = windowStart_ + lines * rowSize_;

	curAddress_ = addr;
	lastSelectReset_ = curAddress_;
	selectRangeStart_ = curAddress_;
	selectRangeEnd_ = curAddress_ + 1;
	selectedNibble_ = 0;

	if (curAddress_ < windowStart_ || curAddress_ >= windowEnd) {
		windowStart_ = curAddress_ & ~15;
	}

	updateStatusBarText();
	redraw();
}

void CtrlMemView::ScrollWindow(int lines, GotoMode mode) {
	windowStart_ += lines * rowSize_;

	UpdateSelectRange(curAddress_ + lines * rowSize_, mode);

	updateStatusBarText();
	redraw();
}

void CtrlMemView::ScrollCursor(int bytes, GotoMode mode) {
	if (!asciiSelected_ && bytes == 1) {
		if (selectedNibble_ == 0) {
			selectedNibble_ = 1;
			bytes = 0;
		} else {
			selectedNibble_ = 0;
		}
	} else if (!asciiSelected_ && bytes == -1) {
		if (selectedNibble_ == 0) {
			selectedNibble_ = 1;
		} else {
			selectedNibble_ = 0;
			bytes = 0;
		}
	} 

	UpdateSelectRange(curAddress_ + bytes, mode);
		
	u32 windowEnd = windowStart_ + visibleRows_ * rowSize_;
	if (curAddress_ < windowStart_) {
		windowStart_ = curAddress_ & ~15;
	} else if (curAddress_ >= windowEnd) {
		windowStart_ = (curAddress_ - (visibleRows_ - 1) * rowSize_) & ~15;
	}
	
	updateStatusBarText();
	redraw();
}

bool CtrlMemView::ParseSearchString(const std::string &query, bool asHex, std::vector<uint8_t> &data) {
	data.clear();
	if (!asHex) {
		for (size_t i = 0; i < query.length(); i++) {
			data.push_back(query[i]);
		}
		return true;
	}

	for (size_t index = 0; index < query.size(); ) {
		if (isspace(query[index])) {
			index++;
			continue;
		}

		u8 value = 0;
		for (int i = 0; i < 2 && index < query.size(); i++) {
			char c = tolower(query[index++]);
			if (c >= 'a' && c <= 'f') {
				value |= (c - 'a' + 10) << (1 - i) * 4;
			} else  if (c >= '0' && c <= '9') {
				value |= (c - '0') << (1 - i) * 4;
			} else {
				return false;
			}
		}

		data.push_back(value);
	}

	return true;
}

std::vector<u32> CtrlMemView::searchString(const std::string &searchQuery) {
	std::vector<u32> searchResAddrs;

	auto memLock = Memory::Lock();
	if (!PSP_IsInited())
		return searchResAddrs;

	std::vector<u8> searchData;
	if (!ParseSearchString(searchQuery, false, searchData))
		return searchResAddrs;

	if (searchData.empty())
		return searchResAddrs;

	std::vector<std::pair<u32, u32>> memoryAreas;
	memoryAreas.emplace_back(PSP_GetScratchpadMemoryBase(), PSP_GetScratchpadMemoryEnd());
	// Ignore the video memory mirrors.
	memoryAreas.emplace_back(PSP_GetVidMemBase(), 0x04200000);
	memoryAreas.emplace_back(PSP_GetKernelMemoryBase(), PSP_GetUserMemoryEnd());

	for (const auto &area : memoryAreas) {
		const u32 segmentStart = area.first;
		const u32 segmentEnd = area.second - (u32)searchData.size();

		for (u32 pos = segmentStart; pos < segmentEnd; pos++) {
			if ((pos % 256) == 0 && KeyDownAsync(VK_ESCAPE)) {
				return searchResAddrs;
			}

			const u8 *ptr = Memory::GetPointerUnchecked(pos);
			if (memcmp(ptr, searchData.data(), searchData.size()) == 0) {
				searchResAddrs.push_back(pos);
			}
		}
	}

	return searchResAddrs;
};

void CtrlMemView::search(bool continueSearch) {
	auto memLock = Memory::Lock();
	if (!PSP_IsInited())
		return;

	u32 searchAddress = 0;
	u32 segmentStart = 0;
	u32 segmentEnd = 0;
	if (continueSearch == false || searchQuery_.empty()) {
		if (InputBox_GetString(GetModuleHandle(NULL), wnd, L"Search for", searchQuery_, searchQuery_) == false) {
			SetFocus(wnd);
			return;
		}
		SetFocus(wnd);
		searchAddress = curAddress_ + 1;
	} else {
		searchAddress = matchAddress_ + 1;
	}

	std::vector<u8> searchData;
	if (!ParseSearchString(searchQuery_, !asciiSelected_, searchData)) {
		MessageBox(wnd, L"Invalid search text.", L"Error", MB_OK);
		return;
	}

	std::vector<std::pair<u32, u32>> memoryAreas;
	// Ignore the video memory mirrors.
	memoryAreas.emplace_back(PSP_GetVidMemBase(), 0x04200000);
	memoryAreas.emplace_back(PSP_GetKernelMemoryBase(), PSP_GetUserMemoryEnd());
	memoryAreas.emplace_back(PSP_GetScratchpadMemoryBase(), PSP_GetScratchpadMemoryEnd());
	
	searching_ = true;
	redraw();	// so the cursor is disabled

	for (size_t i = 0; i < memoryAreas.size(); i++) {
		segmentStart = memoryAreas[i].first;
		segmentEnd = memoryAreas[i].second;

		// better safe than sorry, I guess
		if (!Memory::IsValidAddress(segmentStart))
			continue;
		const u8 *dataPointer = Memory::GetPointerUnchecked(segmentStart);

		if (searchAddress < segmentStart)
			searchAddress = segmentStart;
		if (searchAddress >= segmentEnd)
			continue;

		int index = searchAddress-segmentStart;
		int endIndex = segmentEnd-segmentStart - (int)searchData.size();

		while (index < endIndex) {
			// cancel search
			if ((index % 256) == 0 && KeyDownAsync(VK_ESCAPE)) {
				searching_ = false;
				return;
			}
			if (memcmp(&dataPointer[index], searchData.data(), searchData.size()) == 0) {
				matchAddress_ = index + segmentStart;
				searching_ = false;
				gotoAddr(matchAddress_);
				return;
			}
			index++;
		}
	}

	MessageBox(wnd, L"Not found", L"Search", MB_OK);
	searching_ = false;
	redraw();
}

void CtrlMemView::drawOffsetScale(HDC hdc) {
	int currentX = addressStartX_;

	SetTextColor(hdc, 0x600000);
	TextOutA(hdc, currentX, offsetPositionY_, "Offset", 6);

	// the start offset, the size of the hex addresses and one space
	currentX = addressStartX_ + ((8 + 1) * charWidth_);
	
	char temp[64];
	for (int i = 0; i < 16; i++) {
		snprintf(temp, sizeof(temp), "%02X", i);
		TextOutA(hdc, currentX, offsetPositionY_, temp, 2);
		currentX += 3 * charWidth_; // hex and space
	}
}

void CtrlMemView::toggleOffsetScale(CommonToggles toggle) {
	if (toggle == On) 
		displayOffsetScale_ = true;
	else if (toggle == Off)
		displayOffsetScale_ = false;

	updateStatusBarText();
	redraw();
}

void CtrlMemView::setHighlightType(MemBlockFlags flags) {
	if (highlightFlags_ != flags) {
		highlightFlags_ = flags;
		updateStatusBarText();
		redraw();
	}
}

uint32_t CtrlMemView::pickTagColor(const std::string &tag) {
	int colors[6] = { 0xe0FFFF, 0xFFE0E0, 0xE8E8FF, 0xFFE0FF, 0xE0FFE0, 0xFFFFE0 };
	int which = XXH3_64bits(tag.c_str(), tag.length()) % ARRAY_SIZE(colors);
	return colors[which];
}