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IABSD.fr/xenocara/lib/mesa/src/imgui/imgui_memory_editor.h
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- lib/mesa/src/imgui/imgui_memory_editor.h
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// Mini memory editor for Dear ImGui (to embed in your game/tools) // Animated GIF: https://twitter.com/ocornut/status/894242704317530112 // Get latest version at http://www.github.com/ocornut/imgui_club // // Right-click anywhere to access the Options menu! // You can adjust the keyboard repeat delay/rate in ImGuiIO. // The code assume a mono-space font for simplicity! If you don't use the default font, use ImGui::PushFont()/PopFont() to switch to a mono-space font before caling this. // // Usage: // static MemoryEditor mem_edit_1; // store your state somewhere // mem_edit_1.DrawWindow("Memory Editor", mem_block, mem_block_size, 0x0000); // create a window and draw memory editor (if you already have a window, use DrawContents()) // // Usage: // static MemoryEditor mem_edit_2; // ImGui::Begin("MyWindow") // mem_edit_2.DrawContents(this, sizeof(*this), (size_t)this); // ImGui::End(); // // Changelog: // - v0.10: initial version // - v0.11: always refresh active text input with the latest byte from source memory if it's not being edited. // - v0.12: added OptMidRowsCount to allow extra spacing every XX rows. // - v0.13: added optional ReadFn/WriteFn handlers to access memory via a function. various warning fixes for 64-bits. // - v0.14: added GotoAddr member, added GotoAddrAndHighlight() and highlighting. fixed minor scrollbar glitch when resizing. // - v0.15: added maximum window width. minor optimization. // - v0.16: added OptGreyOutZeroes option. various sizing fixes when resizing using the "Rows" drag. // - v0.17: added HighlightFn handler for optional non-contiguous highlighting. // - v0.18: fixes for displaying 64-bits addresses, fixed mouse click gaps introduced in recent changes, cursor tracking scrolling fixes. // - v0.19: fixed auto-focus of next byte leaving WantCaptureKeyboard=false for one frame. we now capture the keyboard during that transition. // - v0.20: added options menu. added OptShowAscii checkbox. added optional HexII display. split Draw() in DrawWindow()/DrawContents(). fixing glyph width. refactoring/cleaning code. // - v0.21: fixes for using DrawContents() in our own window. fixed HexII to actually be useful and not on the wrong side. // - v0.22: clicking Ascii view select the byte in the Hex view. Ascii view highlight selection. // - v0.23: fixed right-arrow triggering a byte write. // - v0.24: changed DragInt("Rows" to use a %d data format (which is desirable since imgui 1.61). // - v0.25: fixed wording: all occurrences of "Rows" renamed to "Columns". // - v0.26: fixed clicking on hex region // - v0.30: added data preview for common data types // - v0.31: added OptUpperCaseHex option to select lower/upper casing display [@samhocevar] // - v0.32: changed signatures to use void* instead of unsigned char* // - v0.33: added OptShowOptions option to hide all the interactive option setting. // - v0.34: binary preview now applies endianess setting [@nicolasnoble] // // Todo/Bugs: // - Arrows are being sent to the InputText() about to disappear which for LeftArrow makes the text cursor appear at position 1 for one frame. // - Using InputText() is awkward and maybe overkill here, consider implementing something custom. #pragma once #include <stdio.h> // sprintf, scanf #include <stdint.h> // uint8_t, etc. #ifdef _MSC_VER #define _PRISizeT "I" #define ImSnprintf _snprintf #else #define _PRISizeT "z" #define ImSnprintf snprintf #endif struct MemoryEditor { typedef unsigned char u8; enum DataType { DataType_S8, DataType_U8, DataType_S16, DataType_U16, DataType_S32, DataType_U32, DataType_S64, DataType_U64, DataType_Float, DataType_Double, DataType_COUNT }; enum DataFormat { DataFormat_Bin = 0, DataFormat_Dec = 1, DataFormat_Hex = 2, DataFormat_COUNT }; // Settings bool Open; // = true // set to false when DrawWindow() was closed. ignore if not using DrawWindow(). bool ReadOnly; // = false // disable any editing. int Cols; // = 16 // number of columns to display. bool OptShowOptions; // = true // display options button/context menu. when disabled, options will be locked unless you provide your own UI for them. bool OptShowDataPreview; // = false // display a footer previewing the decimal/binary/hex/float representation of the currently selected bytes. bool OptShowHexII; // = false // display values in HexII representation instead of regular hexadecimal: hide null/zero bytes, ascii values as ".X". bool OptShowAscii; // = true // display ASCII representation on the right side. bool OptGreyOutZeroes; // = true // display null/zero bytes using the TextDisabled color. bool OptUpperCaseHex; // = true // display hexadecimal values as "FF" instead of "ff". int OptMidColsCount; // = 8 // set to 0 to disable extra spacing between every mid-cols. int OptAddrDigitsCount; // = 0 // number of addr digits to display (default calculated based on maximum displayed addr). ImU32 HighlightColor; // // background color of highlighted bytes. u8 (*ReadFn)(const u8* data, size_t off); // = NULL // optional handler to read bytes. void (*WriteFn)(u8* data, size_t off, u8 d); // = NULL // optional handler to write bytes. bool (*HighlightFn)(const u8* data, size_t off);//NULL // optional handler to return Highlight property (to support non-contiguous highlighting). // [Internal State] bool ContentsWidthChanged; size_t DataPreviewAddr; size_t DataEditingAddr; bool DataEditingTakeFocus; char DataInputBuf[32]; char AddrInputBuf[32]; size_t GotoAddr; size_t HighlightMin, HighlightMax; int PreviewEndianess; DataType PreviewDataType; MemoryEditor() { // Settings Open = true; ReadOnly = false; Cols = 16; OptShowOptions = true; OptShowDataPreview = false; OptShowHexII = false; OptShowAscii = true; OptGreyOutZeroes = true; OptUpperCaseHex = true; OptMidColsCount = 8; OptAddrDigitsCount = 0; HighlightColor = IM_COL32(255, 255, 255, 50); ReadFn = NULL; WriteFn = NULL; HighlightFn = NULL; // State/Internals ContentsWidthChanged = false; DataPreviewAddr = DataEditingAddr = (size_t)-1; DataEditingTakeFocus = false; memset(DataInputBuf, 0, sizeof(DataInputBuf)); memset(AddrInputBuf, 0, sizeof(AddrInputBuf)); GotoAddr = (size_t)-1; HighlightMin = HighlightMax = (size_t)-1; PreviewEndianess = 0; PreviewDataType = DataType_S32; } void GotoAddrAndHighlight(size_t addr_min, size_t addr_max) { GotoAddr = addr_min; HighlightMin = addr_min; HighlightMax = addr_max; } struct Sizes { int AddrDigitsCount; float LineHeight; float GlyphWidth; float HexCellWidth; float SpacingBetweenMidCols; float PosHexStart; float PosHexEnd; float PosAsciiStart; float PosAsciiEnd; float WindowWidth; }; void CalcSizes(Sizes& s, size_t mem_size, size_t base_display_addr) { ImGuiStyle& style = ImGui::GetStyle(); s.AddrDigitsCount = OptAddrDigitsCount; if (s.AddrDigitsCount == 0) for (size_t n = base_display_addr + mem_size - 1; n > 0; n >>= 4) s.AddrDigitsCount++; s.LineHeight = ImGui::GetTextLineHeight(); s.GlyphWidth = ImGui::CalcTextSize("F").x + 1; // We assume the font is mono-space s.HexCellWidth = (float)(int)(s.GlyphWidth * 2.5f); // "FF " we include trailing space in the width to easily catch clicks everywhere s.SpacingBetweenMidCols = (float)(int)(s.HexCellWidth * 0.25f); // Every OptMidColsCount columns we add a bit of extra spacing s.PosHexStart = (s.AddrDigitsCount + 2) * s.GlyphWidth; s.PosHexEnd = s.PosHexStart + (s.HexCellWidth * Cols); s.PosAsciiStart = s.PosAsciiEnd = s.PosHexEnd; if (OptShowAscii) { s.PosAsciiStart = s.PosHexEnd + s.GlyphWidth * 1; if (OptMidColsCount > 0) s.PosAsciiStart += (float)((Cols + OptMidColsCount - 1) / OptMidColsCount) * s.SpacingBetweenMidCols; s.PosAsciiEnd = s.PosAsciiStart + Cols * s.GlyphWidth; } s.WindowWidth = s.PosAsciiEnd + style.ScrollbarSize + style.WindowPadding.x * 2 + s.GlyphWidth; } // Standalone Memory Editor window void DrawWindow(const char* title, void* mem_data, size_t mem_size, size_t base_display_addr = 0x0000) { Sizes s; CalcSizes(s, mem_size, base_display_addr); ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, 0.0f), ImVec2(s.WindowWidth, FLT_MAX)); Open = true; if (ImGui::Begin(title, &Open, ImGuiWindowFlags_NoScrollbar)) { if (ImGui::IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows) && ImGui::IsMouseClicked(1)) ImGui::OpenPopup("context"); DrawContents(mem_data, mem_size, base_display_addr); if (ContentsWidthChanged) { CalcSizes(s, mem_size, base_display_addr); ImGui::SetWindowSize(ImVec2(s.WindowWidth, ImGui::GetWindowSize().y)); } } ImGui::End(); } // Memory Editor contents only void DrawContents(void* mem_data_void_ptr, size_t mem_size, size_t base_display_addr = 0x0000) { u8* mem_data = (u8*)mem_data_void_ptr; Sizes s; CalcSizes(s, mem_size, base_display_addr); ImGuiStyle& style = ImGui::GetStyle(); // We begin into our scrolling region with the 'ImGuiWindowFlags_NoMove' in order to prevent click from moving the window. // This is used as a facility since our main click detection code doesn't assign an ActiveId so the click would normally be caught as a window-move. const float height_separator = style.ItemSpacing.y; float footer_height = 0; if (OptShowOptions) footer_height += height_separator + ImGui::GetFrameHeightWithSpacing() * 1; if (OptShowDataPreview) footer_height += height_separator + ImGui::GetFrameHeightWithSpacing() * 1 + ImGui::GetTextLineHeightWithSpacing() * 3; ImGui::BeginChild("##scrolling", ImVec2(0, -footer_height), false, ImGuiWindowFlags_NoMove); ImDrawList* draw_list = ImGui::GetWindowDrawList(); ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0)); ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0, 0)); const int line_total_count = (int)((mem_size + Cols - 1) / Cols); ImGuiListClipper clipper(line_total_count, s.LineHeight); const size_t visible_start_addr = clipper.DisplayStart * Cols; const size_t visible_end_addr = clipper.DisplayEnd * Cols; bool data_next = false; if (ReadOnly || DataEditingAddr >= mem_size) DataEditingAddr = (size_t)-1; if (DataPreviewAddr >= mem_size) DataPreviewAddr = (size_t)-1; size_t preview_data_type_size = OptShowDataPreview ? DataTypeGetSize(PreviewDataType) : 0; size_t data_editing_addr_backup = DataEditingAddr; size_t data_editing_addr_next = (size_t)-1; if (DataEditingAddr != (size_t)-1) { // Move cursor but only apply on next frame so scrolling with be synchronized (because currently we can't change the scrolling while the window is being rendered) if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_UpArrow)) && DataEditingAddr >= (size_t)Cols) { data_editing_addr_next = DataEditingAddr - Cols; DataEditingTakeFocus = true; } else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_DownArrow)) && DataEditingAddr < mem_size - Cols) { data_editing_addr_next = DataEditingAddr + Cols; DataEditingTakeFocus = true; } else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_LeftArrow)) && DataEditingAddr > 0) { data_editing_addr_next = DataEditingAddr - 1; DataEditingTakeFocus = true; } else if (ImGui::IsKeyPressed(ImGui::GetKeyIndex(ImGuiKey_RightArrow)) && DataEditingAddr < mem_size - 1) { data_editing_addr_next = DataEditingAddr + 1; DataEditingTakeFocus = true; } } if (data_editing_addr_next != (size_t)-1 && (data_editing_addr_next / Cols) != (data_editing_addr_backup / Cols)) { // Track cursor movements const int scroll_offset = ((int)(data_editing_addr_next / Cols) - (int)(data_editing_addr_backup / Cols)); const bool scroll_desired = (scroll_offset < 0 && data_editing_addr_next < visible_start_addr + Cols * 2) || (scroll_offset > 0 && data_editing_addr_next > visible_end_addr - Cols * 2); if (scroll_desired) ImGui::SetScrollY(ImGui::GetScrollY() + scroll_offset * s.LineHeight); } // Draw vertical separator ImVec2 window_pos = ImGui::GetWindowPos(); if (OptShowAscii) draw_list->AddLine(ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth, window_pos.y), ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth, window_pos.y + 9999), ImGui::GetColorU32(ImGuiCol_Border)); const ImU32 color_text = ImGui::GetColorU32(ImGuiCol_Text); const ImU32 color_disabled = OptGreyOutZeroes ? ImGui::GetColorU32(ImGuiCol_TextDisabled) : color_text; const char* format_address = OptUpperCaseHex ? "%0*" _PRISizeT "X: " : "%0*" _PRISizeT "x: "; const char* format_data = OptUpperCaseHex ? "%0*" _PRISizeT "X" : "%0*" _PRISizeT "x"; const char* format_range = OptUpperCaseHex ? "Range %0*" _PRISizeT "X..%0*" _PRISizeT "X" : "Range %0*" _PRISizeT "x..%0*" _PRISizeT "x"; const char* format_byte = OptUpperCaseHex ? "%02X" : "%02x"; const char* format_byte_space = OptUpperCaseHex ? "%02X " : "%02x "; for (int line_i = clipper.DisplayStart; line_i < clipper.DisplayEnd; line_i++) // display only visible lines { size_t addr = (size_t)(line_i * Cols); ImGui::Text(format_address, s.AddrDigitsCount, base_display_addr + addr); // Draw Hexadecimal for (int n = 0; n < Cols && addr < mem_size; n++, addr++) { float byte_pos_x = s.PosHexStart + s.HexCellWidth * n; if (OptMidColsCount > 0) byte_pos_x += (float)(n / OptMidColsCount) * s.SpacingBetweenMidCols; ImGui::SameLine(byte_pos_x); // Draw highlight bool is_highlight_from_user_range = (addr >= HighlightMin && addr < HighlightMax); bool is_highlight_from_user_func = (HighlightFn && HighlightFn(mem_data, addr)); bool is_highlight_from_preview = (addr >= DataPreviewAddr && addr < DataPreviewAddr + preview_data_type_size); if (is_highlight_from_user_range || is_highlight_from_user_func || is_highlight_from_preview) { ImVec2 pos = ImGui::GetCursorScreenPos(); float highlight_width = s.GlyphWidth * 2; bool is_next_byte_highlighted = (addr + 1 < mem_size) && ((HighlightMax != (size_t)-1 && addr + 1 < HighlightMax) || (HighlightFn && HighlightFn(mem_data, addr + 1))); if (is_next_byte_highlighted || (n + 1 == Cols)) { highlight_width = s.HexCellWidth; if (OptMidColsCount > 0 && n > 0 && (n + 1) < Cols && ((n + 1) % OptMidColsCount) == 0) highlight_width += s.SpacingBetweenMidCols; } draw_list->AddRectFilled(pos, ImVec2(pos.x + highlight_width, pos.y + s.LineHeight), HighlightColor); } if (DataEditingAddr == addr) { // Display text input on current byte bool data_write = false; ImGui::PushID((void*)addr); if (DataEditingTakeFocus) { ImGui::SetKeyboardFocusHere(); ImGui::CaptureKeyboardFromApp(true); sprintf(AddrInputBuf, format_data, s.AddrDigitsCount, base_display_addr + addr); sprintf(DataInputBuf, format_byte, ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]); } ImGui::PushItemWidth(s.GlyphWidth * 2); struct UserData { // FIXME: We should have a way to retrieve the text edit cursor position more easily in the API, this is rather tedious. This is such a ugly mess we may be better off not using InputText() at all here. static int Callback(ImGuiInputTextCallbackData* data) { UserData* user_data = (UserData*)data->UserData; if (!data->HasSelection()) user_data->CursorPos = data->CursorPos; if (data->SelectionStart == 0 && data->SelectionEnd == data->BufTextLen) { // When not editing a byte, always rewrite its content (this is a bit tricky, since InputText technically "owns" the master copy of the buffer we edit it in there) data->DeleteChars(0, data->BufTextLen); data->InsertChars(0, user_data->CurrentBufOverwrite); data->SelectionStart = 0; data->SelectionEnd = data->CursorPos = 2; } return 0; } char CurrentBufOverwrite[3]; // Input int CursorPos; // Output }; UserData user_data; user_data.CursorPos = -1; sprintf(user_data.CurrentBufOverwrite, format_byte, ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]); ImGuiInputTextFlags flags = ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll | ImGuiInputTextFlags_NoHorizontalScroll | ImGuiInputTextFlags_AlwaysInsertMode | ImGuiInputTextFlags_CallbackAlways; if (ImGui::InputText("##data", DataInputBuf, 32, flags, UserData::Callback, &user_data)) data_write = data_next = true; else if (!DataEditingTakeFocus && !ImGui::IsItemActive()) DataEditingAddr = data_editing_addr_next = (size_t)-1; DataEditingTakeFocus = false; ImGui::PopItemWidth(); if (user_data.CursorPos >= 2) data_write = data_next = true; if (data_editing_addr_next != (size_t)-1) data_write = data_next = false; unsigned int data_input_value = 0; if (data_write && sscanf(DataInputBuf, "%X", &data_input_value) == 1) { if (WriteFn) WriteFn(mem_data, addr, (u8)data_input_value); else mem_data[addr] = (u8)data_input_value; } ImGui::PopID(); } else { // NB: The trailing space is not visible but ensure there's no gap that the mouse cannot click on. u8 b = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]; if (OptShowHexII) { if ((b >= 32 && b < 128)) ImGui::Text(".%c ", b); else if (b == 0xFF && OptGreyOutZeroes) ImGui::TextDisabled("## "); else if (b == 0x00) ImGui::Text(" "); else ImGui::Text(format_byte_space, b); } else { if (b == 0 && OptGreyOutZeroes) ImGui::TextDisabled("00 "); else ImGui::Text(format_byte_space, b); } if (!ReadOnly && ImGui::IsItemHovered() && ImGui::IsMouseClicked(0)) { DataEditingTakeFocus = true; data_editing_addr_next = addr; } } } if (OptShowAscii) { // Draw ASCII values ImGui::SameLine(s.PosAsciiStart); ImVec2 pos = ImGui::GetCursorScreenPos(); addr = line_i * Cols; ImGui::PushID(line_i); if (ImGui::InvisibleButton("ascii", ImVec2(s.PosAsciiEnd - s.PosAsciiStart, s.LineHeight))) { DataEditingAddr = DataPreviewAddr = addr + (size_t)((ImGui::GetIO().MousePos.x - pos.x) / s.GlyphWidth); DataEditingTakeFocus = true; } ImGui::PopID(); for (int n = 0; n < Cols && addr < mem_size; n++, addr++) { if (addr == DataEditingAddr) { draw_list->AddRectFilled(pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight), ImGui::GetColorU32(ImGuiCol_FrameBg)); draw_list->AddRectFilled(pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight), ImGui::GetColorU32(ImGuiCol_TextSelectedBg)); } unsigned char c = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]; char display_c = (c < 32 || c >= 128) ? '.' : c; draw_list->AddText(pos, (display_c == '.') ? color_disabled : color_text, &display_c, &display_c + 1); pos.x += s.GlyphWidth; } } } clipper.End(); ImGui::PopStyleVar(2); ImGui::EndChild(); if (data_next && DataEditingAddr < mem_size) { DataEditingAddr = DataPreviewAddr = DataEditingAddr + 1; DataEditingTakeFocus = true; } else if (data_editing_addr_next != (size_t)-1) { DataEditingAddr = DataPreviewAddr = data_editing_addr_next; } bool next_show_data_preview = OptShowDataPreview; if (OptShowOptions) { ImGui::Separator(); // Options menu if (ImGui::Button("Options")) ImGui::OpenPopup("context"); if (ImGui::BeginPopup("context")) { ImGui::PushItemWidth(56); if (ImGui::DragInt("##cols", &Cols, 0.2f, 4, 32, "%d cols")) { ContentsWidthChanged = true; } ImGui::PopItemWidth(); ImGui::Checkbox("Show Data Preview", &next_show_data_preview); ImGui::Checkbox("Show HexII", &OptShowHexII); if (ImGui::Checkbox("Show Ascii", &OptShowAscii)) { ContentsWidthChanged = true; } ImGui::Checkbox("Grey out zeroes", &OptGreyOutZeroes); ImGui::Checkbox("Uppercase Hex", &OptUpperCaseHex); ImGui::EndPopup(); } ImGui::SameLine(); ImGui::Text(format_range, s.AddrDigitsCount, base_display_addr, s.AddrDigitsCount, base_display_addr + mem_size - 1); ImGui::SameLine(); ImGui::PushItemWidth((s.AddrDigitsCount + 1) * s.GlyphWidth + style.FramePadding.x * 2.0f); if (ImGui::InputText("##addr", AddrInputBuf, 32, ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_EnterReturnsTrue)) { size_t goto_addr; if (sscanf(AddrInputBuf, "%" _PRISizeT "X", &goto_addr) == 1) { GotoAddr = goto_addr - base_display_addr; HighlightMin = HighlightMax = (size_t)-1; } } ImGui::PopItemWidth(); if (GotoAddr != (size_t)-1) { if (GotoAddr < mem_size) { ImGui::BeginChild("##scrolling"); ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + (GotoAddr / Cols) * ImGui::GetTextLineHeight()); ImGui::EndChild(); DataEditingAddr = DataPreviewAddr = GotoAddr; DataEditingTakeFocus = true; } GotoAddr = (size_t)-1; } } if (OptShowDataPreview) { ImGui::Separator(); ImGui::AlignTextToFramePadding(); ImGui::Text("Preview as:"); ImGui::SameLine(); ImGui::PushItemWidth((s.GlyphWidth * 10.0f) + style.FramePadding.x * 2.0f + style.ItemInnerSpacing.x); if (ImGui::BeginCombo("##combo_type", DataTypeGetDesc(PreviewDataType), ImGuiComboFlags_HeightLargest)) { for (int n = 0; n < DataType_COUNT; n++) if (ImGui::Selectable(DataTypeGetDesc((DataType)n), PreviewDataType == n)) PreviewDataType = (DataType)n; ImGui::EndCombo(); } ImGui::PopItemWidth(); ImGui::SameLine(); ImGui::PushItemWidth((s.GlyphWidth * 6.0f) + style.FramePadding.x * 2.0f + style.ItemInnerSpacing.x); ImGui::Combo("##combo_endianess", &PreviewEndianess, "LE\0BE\0\0"); ImGui::PopItemWidth(); char buf[128]; float x = s.GlyphWidth * 6.0f; bool has_value = DataPreviewAddr != (size_t)-1; if (has_value) DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Dec, buf, (size_t)IM_ARRAYSIZE(buf)); ImGui::Text("Dec"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A"); if (has_value) DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Hex, buf, (size_t)IM_ARRAYSIZE(buf)); ImGui::Text("Hex"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A"); if (has_value) DisplayPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType, DataFormat_Bin, buf, (size_t)IM_ARRAYSIZE(buf)); ImGui::Text("Bin"); ImGui::SameLine(x); ImGui::TextUnformatted(has_value ? buf : "N/A"); } OptShowDataPreview = next_show_data_preview; // Notify the main window of our ideal child content size (FIXME: we are missing an API to get the contents size from the child) ImGui::SetCursorPosX(s.WindowWidth); } // Utilities for Data Preview const char* DataTypeGetDesc(DataType data_type) const { const char* descs[] = { "Int8", "Uint8", "Int16", "Uint16", "Int32", "Uint32", "Int64", "Uint64", "Float", "Double" }; IM_ASSERT(data_type >= 0 && data_type < DataType_COUNT); return descs[data_type]; } size_t DataTypeGetSize(DataType data_type) const { const size_t sizes[] = { 1, 1, 2, 2, 4, 4, 8, 8, 4, 8 }; IM_ASSERT(data_type >= 0 && data_type < DataType_COUNT); return sizes[data_type]; } const char* DataFormatGetDesc(DataFormat data_format) const { const char* descs[] = { "Bin", "Dec", "Hex" }; IM_ASSERT(data_format >= 0 && data_format < DataFormat_COUNT); return descs[data_format]; } bool IsBigEndian() const { uint16_t x = 1; char c[2]; memcpy(c, &x, 2); return c[0] != 0; } static void* EndianessCopyBigEndian(void* _dst, void* _src, size_t s, int is_little_endian) { if (is_little_endian) { uint8_t* dst = (uint8_t*)_dst; uint8_t* src = (uint8_t*)_src + s - 1; for (int i = 0, n = (int)s; i < n; ++i) memcpy(dst++, src--, 1); return _dst; } else { return memcpy(_dst, _src, s); } } static void* EndianessCopyLittleEndian(void* _dst, void* _src, size_t s, int is_little_endian) { if (is_little_endian) { return memcpy(_dst, _src, s); } else { uint8_t* dst = (uint8_t*)_dst; uint8_t* src = (uint8_t*)_src + s - 1; for (int i = 0, n = (int)s; i < n; ++i) memcpy(dst++, src--, 1); return _dst; } } void* EndianessCopy(void *dst, void *src, size_t size) const { static void *(*fp)(void *, void *, size_t, int) = NULL; if (fp == NULL) fp = IsBigEndian() ? EndianessCopyBigEndian : EndianessCopyLittleEndian; return fp(dst, src, size, PreviewEndianess); } const char* FormatBinary(const uint8_t* buf, int width) const { IM_ASSERT(width <= 64); size_t out_n = 0; static char out_buf[64 + 8 + 1]; int n = width / 8; for (int j = n - 1; j >= 0; --j) { for (int i = 0; i < 8; ++i) out_buf[out_n++] = (buf[j] & (1 << (7 - i))) ? '1' : '0'; out_buf[out_n++] = ' '; } IM_ASSERT(out_n < IM_ARRAYSIZE(out_buf)); out_buf[out_n] = 0; return out_buf; } void DisplayPreviewData(size_t addr, const u8* mem_data, size_t mem_size, DataType data_type, DataFormat data_format, char* out_buf, size_t out_buf_size) const { uint8_t buf[8]; size_t elem_size = DataTypeGetSize(data_type); size_t size = addr + elem_size > mem_size ? mem_size - addr : elem_size; if (ReadFn) for (int i = 0, n = (int)size; i < n; ++i) buf[i] = ReadFn(mem_data, addr + i); else memcpy(buf, mem_data + addr, size); if (data_format == DataFormat_Bin) { uint8_t binbuf[8]; EndianessCopy(binbuf, buf, size); ImSnprintf(out_buf, out_buf_size, "%s", FormatBinary(binbuf, (int)size * 8)); return; } out_buf[0] = 0; switch (data_type) { case DataType_S8: { int8_t int8 = 0; EndianessCopy(&int8, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hhd", int8); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%02x", int8 & 0xFF); return; } break; } case DataType_U8: { uint8_t uint8 = 0; EndianessCopy(&uint8, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hhu", uint8); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%02x", uint8 & 0XFF); return; } break; } case DataType_S16: { int16_t int16 = 0; EndianessCopy(&int16, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hd", int16); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%04x", int16 & 0xFFFF); return; } break; } case DataType_U16: { uint16_t uint16 = 0; EndianessCopy(&uint16, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%hu", uint16); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%04x", uint16 & 0xFFFF); return; } break; } case DataType_S32: { int32_t int32 = 0; EndianessCopy(&int32, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%d", int32); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%08x", int32); return; } break; } case DataType_U32: { uint32_t uint32 = 0; EndianessCopy(&uint32, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%u", uint32); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%08x", uint32); return; } break; } case DataType_S64: { int64_t int64 = 0; EndianessCopy(&int64, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%lld", (long long)int64); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%016llx", (long long)int64); return; } break; } case DataType_U64: { uint64_t uint64 = 0; EndianessCopy(&uint64, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%llu", (long long)uint64); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "0x%016llx", (long long)uint64); return; } break; } case DataType_Float: { float float32 = 0.0f; EndianessCopy(&float32, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%f", float32); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "%a", float32); return; } break; } case DataType_Double: { double float64 = 0.0; EndianessCopy(&float64, buf, size); if (data_format == DataFormat_Dec) { ImSnprintf(out_buf, out_buf_size, "%f", float64); return; } if (data_format == DataFormat_Hex) { ImSnprintf(out_buf, out_buf_size, "%a", float64); return; } break; } case DataType_COUNT: break; } // Switch IM_ASSERT(0); // Shouldn't reach } }; #undef _PRISizeT #undef ImSnprintf