Refactor: Moved InputText functions from imgui.cpp to imgui_widgets.cpp (#2036)
diff --git a/imgui.cpp b/imgui.cpp
index cdda1a3..28efacc 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -894,10 +894,6 @@
static ImRect GetViewportRect();
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
-
static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType data_type, const void* data_ptr, const char* format);
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* format);
@@ -9065,973 +9061,6 @@
return value_changed;
}
-static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
-{
- int line_count = 0;
- const char* s = text_begin;
- while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
- if (c == '\n')
- line_count++;
- s--;
- if (s[0] != '\n' && s[0] != '\r')
- line_count++;
- *out_text_end = s;
- return line_count;
-}
-
-static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
-{
- ImFont* font = GImGui->Font;
- const float line_height = GImGui->FontSize;
- const float scale = line_height / font->FontSize;
-
- ImVec2 text_size = ImVec2(0,0);
- float line_width = 0.0f;
-
- const ImWchar* s = text_begin;
- while (s < text_end)
- {
- unsigned int c = (unsigned int)(*s++);
- if (c == '\n')
- {
- text_size.x = ImMax(text_size.x, line_width);
- text_size.y += line_height;
- line_width = 0.0f;
- if (stop_on_new_line)
- break;
- continue;
- }
- if (c == '\r')
- continue;
-
- const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
- line_width += char_width;
- }
-
- if (text_size.x < line_width)
- text_size.x = line_width;
-
- if (out_offset)
- *out_offset = ImVec2(line_width, text_size.y + line_height); // offset allow for the possibility of sitting after a trailing \n
-
- if (line_width > 0 || text_size.y == 0.0f) // whereas size.y will ignore the trailing \n
- text_size.y += line_height;
-
- if (remaining)
- *remaining = s;
-
- return text_size;
-}
-
-// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
-namespace ImGuiStb
-{
-
-static int STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj) { return obj->CurLenW; }
-static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx) { return obj->TextW[idx]; }
-static float STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx) { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
-static int STB_TEXTEDIT_KEYTOTEXT(int key) { return key >= 0x10000 ? 0 : key; }
-static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
-static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
-{
- const ImWchar* text = obj->TextW.Data;
- const ImWchar* text_remaining = NULL;
- const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
- r->x0 = 0.0f;
- r->x1 = size.x;
- r->baseline_y_delta = size.y;
- r->ymin = 0.0f;
- r->ymax = size.y;
- r->num_chars = (int)(text_remaining - (text + line_start_idx));
-}
-
-static bool is_separator(unsigned int c) { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
-static int is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx) { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
-static int STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
-#ifdef __APPLE__ // FIXME: Move setting to IO structure
-static int is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx) { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
-static int STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
-#else
-static int STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
-#endif
-#define STB_TEXTEDIT_MOVEWORDLEFT STB_TEXTEDIT_MOVEWORDLEFT_IMPL // They need to be #define for stb_textedit.h
-#define STB_TEXTEDIT_MOVEWORDRIGHT STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
-
-static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
-{
- ImWchar* dst = obj->TextW.Data + pos;
-
- // We maintain our buffer length in both UTF-8 and wchar formats
- obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
- obj->CurLenW -= n;
-
- // Offset remaining text
- const ImWchar* src = obj->TextW.Data + pos + n;
- while (ImWchar c = *src++)
- *dst++ = c;
- *dst = '\0';
-}
-
-static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
-{
- const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
- const int text_len = obj->CurLenW;
- IM_ASSERT(pos <= text_len);
-
- const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
- if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
- return false;
-
- // Grow internal buffer if needed
- if (new_text_len + text_len + 1 > obj->TextW.Size)
- {
- if (!is_resizable)
- return false;
- IM_ASSERT(text_len < obj->TextW.Size);
- obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
- }
-
- ImWchar* text = obj->TextW.Data;
- if (pos != text_len)
- memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
- memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
-
- obj->CurLenW += new_text_len;
- obj->CurLenA += new_text_len_utf8;
- obj->TextW[obj->CurLenW] = '\0';
-
- return true;
-}
-
-// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
-#define STB_TEXTEDIT_K_LEFT 0x10000 // keyboard input to move cursor left
-#define STB_TEXTEDIT_K_RIGHT 0x10001 // keyboard input to move cursor right
-#define STB_TEXTEDIT_K_UP 0x10002 // keyboard input to move cursor up
-#define STB_TEXTEDIT_K_DOWN 0x10003 // keyboard input to move cursor down
-#define STB_TEXTEDIT_K_LINESTART 0x10004 // keyboard input to move cursor to start of line
-#define STB_TEXTEDIT_K_LINEEND 0x10005 // keyboard input to move cursor to end of line
-#define STB_TEXTEDIT_K_TEXTSTART 0x10006 // keyboard input to move cursor to start of text
-#define STB_TEXTEDIT_K_TEXTEND 0x10007 // keyboard input to move cursor to end of text
-#define STB_TEXTEDIT_K_DELETE 0x10008 // keyboard input to delete selection or character under cursor
-#define STB_TEXTEDIT_K_BACKSPACE 0x10009 // keyboard input to delete selection or character left of cursor
-#define STB_TEXTEDIT_K_UNDO 0x1000A // keyboard input to perform undo
-#define STB_TEXTEDIT_K_REDO 0x1000B // keyboard input to perform redo
-#define STB_TEXTEDIT_K_WORDLEFT 0x1000C // keyboard input to move cursor left one word
-#define STB_TEXTEDIT_K_WORDRIGHT 0x1000D // keyboard input to move cursor right one word
-#define STB_TEXTEDIT_K_SHIFT 0x20000
-
-#define STB_TEXTEDIT_IMPLEMENTATION
-#include "stb_textedit.h"
-
-}
-
-void ImGuiInputTextState::OnKeyPressed(int key)
-{
- stb_textedit_key(this, &StbState, key);
- CursorFollow = true;
- CursorAnimReset();
-}
-
-ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
-{
- memset(this, 0, sizeof(*this));
-}
-
-// Public API to manipulate UTF-8 text
-// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
-// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
-void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
-{
- IM_ASSERT(pos + bytes_count <= BufTextLen);
- char* dst = Buf + pos;
- const char* src = Buf + pos + bytes_count;
- while (char c = *src++)
- *dst++ = c;
- *dst = '\0';
-
- if (CursorPos + bytes_count >= pos)
- CursorPos -= bytes_count;
- else if (CursorPos >= pos)
- CursorPos = pos;
- SelectionStart = SelectionEnd = CursorPos;
- BufDirty = true;
- BufTextLen -= bytes_count;
-}
-
-void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
-{
- const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
- const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
- if (new_text_len + BufTextLen >= BufSize)
- {
- if (!is_resizable)
- return;
-
- // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
- ImGuiContext& g = *GImGui;
- ImGuiInputTextState* edit_state = &g.InputTextState;
- IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
- IM_ASSERT(Buf == edit_state->TempBuffer.Data);
- int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
- edit_state->TempBuffer.reserve(new_buf_size + 1);
- Buf = edit_state->TempBuffer.Data;
- BufSize = edit_state->BufCapacityA = new_buf_size;
- }
-
- if (BufTextLen != pos)
- memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
- memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
- Buf[BufTextLen + new_text_len] = '\0';
-
- if (CursorPos >= pos)
- CursorPos += new_text_len;
- SelectionStart = SelectionEnd = CursorPos;
- BufDirty = true;
- BufTextLen += new_text_len;
-}
-
-// Return false to discard a character.
-static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
- unsigned int c = *p_char;
-
- if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
- {
- bool pass = false;
- pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
- pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
- if (!pass)
- return false;
- }
-
- if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
- return false;
-
- if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
- {
- if (flags & ImGuiInputTextFlags_CharsDecimal)
- if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
- return false;
-
- if (flags & ImGuiInputTextFlags_CharsScientific)
- if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
- return false;
-
- if (flags & ImGuiInputTextFlags_CharsHexadecimal)
- if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
- return false;
-
- if (flags & ImGuiInputTextFlags_CharsUppercase)
- if (c >= 'a' && c <= 'z')
- *p_char = (c += (unsigned int)('A'-'a'));
-
- if (flags & ImGuiInputTextFlags_CharsNoBlank)
- if (ImCharIsBlankW(c))
- return false;
- }
-
- if (flags & ImGuiInputTextFlags_CallbackCharFilter)
- {
- ImGuiInputTextCallbackData callback_data;
- memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
- callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
- callback_data.EventChar = (ImWchar)c;
- callback_data.Flags = flags;
- callback_data.UserData = user_data;
- if (callback(&callback_data) != 0)
- return false;
- *p_char = callback_data.EventChar;
- if (!callback_data.EventChar)
- return false;
- }
-
- return true;
-}
-
-// Edit a string of text
-// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
-// This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match
-// Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
-// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
-// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
-// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
-bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
-{
- ImGuiWindow* window = GetCurrentWindow();
- if (window->SkipItems)
- return false;
-
- IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline))); // Can't use both together (they both use up/down keys)
- IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
-
- ImGuiContext& g = *GImGui;
- const ImGuiIO& io = g.IO;
- const ImGuiStyle& style = g.Style;
-
- const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
- const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
- const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
- const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
- const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
- if (is_resizable)
- IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
-
- if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope,
- BeginGroup();
- const ImGuiID id = window->GetID(label);
- const ImVec2 label_size = CalcTextSize(label, NULL, true);
- ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
- const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
- const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
-
- ImGuiWindow* draw_window = window;
- if (is_multiline)
- {
- ItemAdd(total_bb, id, &frame_bb);
- if (!BeginChildFrame(id, frame_bb.GetSize()))
- {
- EndChildFrame();
- EndGroup();
- return false;
- }
- draw_window = GetCurrentWindow();
- draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
- size.x -= draw_window->ScrollbarSizes.x;
- }
- else
- {
- ItemSize(total_bb, style.FramePadding.y);
- if (!ItemAdd(total_bb, id, &frame_bb))
- return false;
- }
- const bool hovered = ItemHoverable(frame_bb, id);
- if (hovered)
- g.MouseCursor = ImGuiMouseCursor_TextInput;
-
- // Password pushes a temporary font with only a fallback glyph
- if (is_password)
- {
- const ImFontGlyph* glyph = g.Font->FindGlyph('*');
- ImFont* password_font = &g.InputTextPasswordFont;
- password_font->FontSize = g.Font->FontSize;
- password_font->Scale = g.Font->Scale;
- password_font->DisplayOffset = g.Font->DisplayOffset;
- password_font->Ascent = g.Font->Ascent;
- password_font->Descent = g.Font->Descent;
- password_font->ContainerAtlas = g.Font->ContainerAtlas;
- password_font->FallbackGlyph = glyph;
- password_font->FallbackAdvanceX = glyph->AdvanceX;
- IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
- PushFont(password_font);
- }
-
- // NB: we are only allowed to access 'edit_state' if we are the active widget.
- ImGuiInputTextState& edit_state = g.InputTextState;
-
- const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0); // Using completion callback disable keyboard tabbing
- const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
- const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
-
- const bool user_clicked = hovered && io.MouseClicked[0];
- const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
- const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
-
- bool clear_active_id = false;
-
- bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
- if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
- {
- if (g.ActiveId != id)
- {
- // Start edition
- // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
- // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
- const int prev_len_w = edit_state.CurLenW;
- const int init_buf_len = (int)strlen(buf);
- edit_state.TextW.resize(buf_size+1); // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
- edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
- memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
- const char* buf_end = NULL;
- edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
- edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
- edit_state.CursorAnimReset();
-
- // Preserve cursor position and undo/redo stack if we come back to same widget
- // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
- const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
- if (recycle_state)
- {
- // Recycle existing cursor/selection/undo stack but clamp position
- // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
- edit_state.CursorClamp();
- }
- else
- {
- edit_state.ID = id;
- edit_state.ScrollX = 0.0f;
- stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
- if (!is_multiline && focus_requested_by_code)
- select_all = true;
- }
- if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
- edit_state.StbState.insert_mode = true;
- if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
- select_all = true;
- }
- SetActiveID(id, window);
- SetFocusID(id, window);
- FocusWindow(window);
- if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
- g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
- }
- else if (io.MouseClicked[0])
- {
- // Release focus when we click outside
- clear_active_id = true;
- }
-
- bool value_changed = false;
- bool enter_pressed = false;
- int backup_current_text_length = 0;
-
- if (g.ActiveId == id)
- {
- if (!is_editable && !g.ActiveIdIsJustActivated)
- {
- // When read-only we always use the live data passed to the function
- edit_state.TextW.resize(buf_size+1);
- const char* buf_end = NULL;
- edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
- edit_state.CurLenA = (int)(buf_end - buf);
- edit_state.CursorClamp();
- }
-
- backup_current_text_length = edit_state.CurLenA;
- edit_state.BufCapacityA = buf_size;
- edit_state.UserFlags = flags;
- edit_state.UserCallback = callback;
- edit_state.UserCallbackData = callback_user_data;
-
- // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
- // Down the line we should have a cleaner library-wide concept of Selected vs Active.
- g.ActiveIdAllowOverlap = !io.MouseDown[0];
- g.WantTextInputNextFrame = 1;
-
- // Edit in progress
- const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
- const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
-
- const bool is_osx = io.ConfigMacOSXBehaviors;
- if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
- {
- edit_state.SelectAll();
- edit_state.SelectedAllMouseLock = true;
- }
- else if (hovered && is_osx && io.MouseDoubleClicked[0])
- {
- // Double-click select a word only, OS X style (by simulating keystrokes)
- edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
- edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
- }
- else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
- {
- if (hovered)
- {
- stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
- edit_state.CursorAnimReset();
- }
- }
- else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
- {
- stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
- edit_state.CursorAnimReset();
- edit_state.CursorFollow = true;
- }
- if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
- edit_state.SelectedAllMouseLock = false;
-
- if (io.InputCharacters[0])
- {
- // Process text input (before we check for Return because using some IME will effectively send a Return?)
- // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
- bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
- if (!ignore_inputs && is_editable && !user_nav_input_start)
- for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
- {
- // Insert character if they pass filtering
- unsigned int c = (unsigned int)io.InputCharacters[n];
- if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
- edit_state.OnKeyPressed((int)c);
- }
-
- // Consume characters
- memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
- }
- }
-
- bool cancel_edit = false;
- if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
- {
- // Handle key-presses
- const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
- const bool is_osx = io.ConfigMacOSXBehaviors;
- const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
- const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
- const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl; // OS X style: Text editing cursor movement using Alt instead of Ctrl
- const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt; // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
- const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
- const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
-
- const bool is_cut = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
- const bool is_copy = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
- const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
- const bool is_undo = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
- const bool is_redo = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
-
- if (IsKeyPressedMap(ImGuiKey_LeftArrow)) { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline) { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline) { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_Home)) { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_End)) { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
- else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
- {
- if (!edit_state.HasSelection())
- {
- if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
- else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
- }
- edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
- }
- else if (IsKeyPressedMap(ImGuiKey_Enter))
- {
- bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
- if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
- {
- enter_pressed = clear_active_id = true;
- }
- else if (is_editable)
- {
- unsigned int c = '\n'; // Insert new line
- if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
- edit_state.OnKeyPressed((int)c);
- }
- }
- else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
- {
- unsigned int c = '\t'; // Insert TAB
- if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
- edit_state.OnKeyPressed((int)c);
- }
- else if (IsKeyPressedMap(ImGuiKey_Escape))
- {
- clear_active_id = cancel_edit = true;
- }
- else if (is_undo || is_redo)
- {
- edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
- edit_state.ClearSelection();
- }
- else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
- {
- edit_state.SelectAll();
- edit_state.CursorFollow = true;
- }
- else if (is_cut || is_copy)
- {
- // Cut, Copy
- if (io.SetClipboardTextFn)
- {
- const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
- const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
- edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
- ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
- SetClipboardText(edit_state.TempBuffer.Data);
- }
- if (is_cut)
- {
- if (!edit_state.HasSelection())
- edit_state.SelectAll();
- edit_state.CursorFollow = true;
- stb_textedit_cut(&edit_state, &edit_state.StbState);
- }
- }
- else if (is_paste)
- {
- if (const char* clipboard = GetClipboardText())
- {
- // Filter pasted buffer
- const int clipboard_len = (int)strlen(clipboard);
- ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
- int clipboard_filtered_len = 0;
- for (const char* s = clipboard; *s; )
- {
- unsigned int c;
- s += ImTextCharFromUtf8(&c, s, NULL);
- if (c == 0)
- break;
- if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
- continue;
- clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
- }
- clipboard_filtered[clipboard_filtered_len] = 0;
- if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
- {
- stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
- edit_state.CursorFollow = true;
- }
- ImGui::MemFree(clipboard_filtered);
- }
- }
- }
-
- if (g.ActiveId == id)
- {
- const char* apply_new_text = NULL;
- int apply_new_text_length = 0;
- if (cancel_edit)
- {
- // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
- if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
- {
- apply_new_text = edit_state.InitialText.Data;
- apply_new_text_length = edit_state.InitialText.Size - 1;
- }
- }
-
- // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
- // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
- bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
- if (apply_edit_back_to_user_buffer)
- {
- // Apply new value immediately - copy modified buffer back
- // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
- // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
- // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
- if (is_editable)
- {
- edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
- ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
- }
-
- // User callback
- if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
- {
- IM_ASSERT(callback != NULL);
-
- // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
- ImGuiInputTextFlags event_flag = 0;
- ImGuiKey event_key = ImGuiKey_COUNT;
- if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
- {
- event_flag = ImGuiInputTextFlags_CallbackCompletion;
- event_key = ImGuiKey_Tab;
- }
- else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
- {
- event_flag = ImGuiInputTextFlags_CallbackHistory;
- event_key = ImGuiKey_UpArrow;
- }
- else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
- {
- event_flag = ImGuiInputTextFlags_CallbackHistory;
- event_key = ImGuiKey_DownArrow;
- }
- else if (flags & ImGuiInputTextFlags_CallbackAlways)
- event_flag = ImGuiInputTextFlags_CallbackAlways;
-
- if (event_flag)
- {
- ImGuiInputTextCallbackData callback_data;
- memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
- callback_data.EventFlag = event_flag;
- callback_data.Flags = flags;
- callback_data.UserData = callback_user_data;
-
- callback_data.EventKey = event_key;
- callback_data.Buf = edit_state.TempBuffer.Data;
- callback_data.BufTextLen = edit_state.CurLenA;
- callback_data.BufSize = edit_state.BufCapacityA;
- callback_data.BufDirty = false;
-
- // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
- ImWchar* text = edit_state.TextW.Data;
- const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
- const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
- const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
-
- // Call user code
- callback(&callback_data);
-
- // Read back what user may have modified
- IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data); // Invalid to modify those fields
- IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
- IM_ASSERT(callback_data.Flags == flags);
- if (callback_data.CursorPos != utf8_cursor_pos) { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
- if (callback_data.SelectionStart != utf8_selection_start) { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
- if (callback_data.SelectionEnd != utf8_selection_end) { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
- if (callback_data.BufDirty)
- {
- IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
- if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
- edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
- edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
- edit_state.CurLenA = callback_data.BufTextLen; // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
- edit_state.CursorAnimReset();
- }
- }
- }
-
- // Will copy result string if modified
- if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
- {
- apply_new_text = edit_state.TempBuffer.Data;
- apply_new_text_length = edit_state.CurLenA;
- }
- }
-
- // Copy result to user buffer
- if (apply_new_text)
- {
- IM_ASSERT(apply_new_text_length >= 0);
- if (backup_current_text_length != apply_new_text_length && is_resizable)
- {
- ImGuiInputTextCallbackData callback_data;
- callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
- callback_data.Flags = flags;
- callback_data.Buf = buf;
- callback_data.BufTextLen = apply_new_text_length;
- callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
- callback_data.UserData = callback_user_data;
- callback(&callback_data);
- buf = callback_data.Buf;
- buf_size = callback_data.BufSize;
- apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
- IM_ASSERT(apply_new_text_length <= buf_size);
- }
-
- // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
- ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
- value_changed = true;
- }
-
- // Clear temporary user storage
- edit_state.UserFlags = 0;
- edit_state.UserCallback = NULL;
- edit_state.UserCallbackData = NULL;
- }
-
- // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
- if (clear_active_id && g.ActiveId == id)
- ClearActiveID();
-
- // Render
- // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
- const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
-
- // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
- // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
- // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
- const int buf_display_max_length = 2 * 1024 * 1024;
-
- if (!is_multiline)
- {
- RenderNavHighlight(frame_bb, id);
- RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
- }
-
- const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
- ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
- ImVec2 text_size(0.f, 0.f);
- const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
- if (g.ActiveId == id || is_currently_scrolling)
- {
- edit_state.CursorAnim += io.DeltaTime;
-
- // This is going to be messy. We need to:
- // - Display the text (this alone can be more easily clipped)
- // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
- // - Measure text height (for scrollbar)
- // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
- // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
- const ImWchar* text_begin = edit_state.TextW.Data;
- ImVec2 cursor_offset, select_start_offset;
-
- {
- // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
- const ImWchar* searches_input_ptr[2];
- searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
- searches_input_ptr[1] = NULL;
- int searches_remaining = 1;
- int searches_result_line_number[2] = { -1, -999 };
- if (edit_state.StbState.select_start != edit_state.StbState.select_end)
- {
- searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
- searches_result_line_number[1] = -1;
- searches_remaining++;
- }
-
- // Iterate all lines to find our line numbers
- // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
- searches_remaining += is_multiline ? 1 : 0;
- int line_count = 0;
- for (const ImWchar* s = text_begin; *s != 0; s++)
- if (*s == '\n')
- {
- line_count++;
- if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
- if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
- }
- line_count++;
- if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
- if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
-
- // Calculate 2d position by finding the beginning of the line and measuring distance
- cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
- cursor_offset.y = searches_result_line_number[0] * g.FontSize;
- if (searches_result_line_number[1] >= 0)
- {
- select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
- select_start_offset.y = searches_result_line_number[1] * g.FontSize;
- }
-
- // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
- if (is_multiline)
- text_size = ImVec2(size.x, line_count * g.FontSize);
- }
-
- // Scroll
- if (edit_state.CursorFollow)
- {
- // Horizontal scroll in chunks of quarter width
- if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
- {
- const float scroll_increment_x = size.x * 0.25f;
- if (cursor_offset.x < edit_state.ScrollX)
- edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
- else if (cursor_offset.x - size.x >= edit_state.ScrollX)
- edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
- }
- else
- {
- edit_state.ScrollX = 0.0f;
- }
-
- // Vertical scroll
- if (is_multiline)
- {
- float scroll_y = draw_window->Scroll.y;
- if (cursor_offset.y - g.FontSize < scroll_y)
- scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
- else if (cursor_offset.y - size.y >= scroll_y)
- scroll_y = cursor_offset.y - size.y;
- draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y); // To avoid a frame of lag
- draw_window->Scroll.y = scroll_y;
- render_pos.y = draw_window->DC.CursorPos.y;
- }
- }
- edit_state.CursorFollow = false;
- const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
-
- // Draw selection
- if (edit_state.StbState.select_start != edit_state.StbState.select_end)
- {
- const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
- const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
-
- float bg_offy_up = is_multiline ? 0.0f : -1.0f; // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
- float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
- ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
- ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
- for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
- {
- if (rect_pos.y > clip_rect.w + g.FontSize)
- break;
- if (rect_pos.y < clip_rect.y)
- {
- while (p < text_selected_end)
- if (*p++ == '\n')
- break;
- }
- else
- {
- ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
- if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
- ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
- rect.ClipWith(clip_rect);
- if (rect.Overlaps(clip_rect))
- draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
- }
- rect_pos.x = render_pos.x - render_scroll.x;
- rect_pos.y += g.FontSize;
- }
- }
-
- const int buf_display_len = edit_state.CurLenA;
- if (is_multiline || buf_display_len < buf_display_max_length)
- draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
-
- // Draw blinking cursor
- bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
- ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
- ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
- if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
- draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
-
- // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
- if (is_editable)
- g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
- }
- else
- {
- // Render text only
- const char* buf_end = NULL;
- if (is_multiline)
- text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
- else
- buf_end = buf_display + strlen(buf_display);
- if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
- draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
- }
-
- if (is_multiline)
- {
- Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
- EndChildFrame();
- EndGroup();
- }
-
- if (is_password)
- PopFont();
-
- // Log as text
- if (g.LogEnabled && !is_password)
- LogRenderedText(&render_pos, buf_display, NULL);
-
- if (label_size.x > 0)
- RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
-
- if (value_changed)
- MarkItemEdited(id);
-
- if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
- return enter_pressed;
- else
- return value_changed;
-}
-
-bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
- IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
- return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
-}
-
-bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
-{
- return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
-}
-
// NB: format here must be a simple "%xx" format string with no prefix/suffix (unlike the Drag/Slider functions "format" argument)
bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* data_ptr, const void* step, const void* step_fast, const char* format, ImGuiInputTextFlags extra_flags)
{
diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index c2b2a1c..276ec32 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -34,6 +34,11 @@
// Forward Declarations
//-------------------------------------------------------------------------
+// For InputTextEx()
+static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);
+static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
+static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false);
+
//-------------------------------------------------------------------------
// SHARED UTILITIES
//-------------------------------------------------------------------------
@@ -1209,6 +1214,972 @@
// - InputTextEx() [Internal]
//-------------------------------------------------------------------------
+bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+ IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
+ return InputTextEx(label, buf, (int)buf_size, ImVec2(0,0), flags, callback, user_data);
+}
+
+bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+ return InputTextEx(label, buf, (int)buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
+}
+
+static int InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end)
+{
+ int line_count = 0;
+ const char* s = text_begin;
+ while (char c = *s++) // We are only matching for \n so we can ignore UTF-8 decoding
+ if (c == '\n')
+ line_count++;
+ s--;
+ if (s[0] != '\n' && s[0] != '\r')
+ line_count++;
+ *out_text_end = s;
+ return line_count;
+}
+
+static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining, ImVec2* out_offset, bool stop_on_new_line)
+{
+ ImFont* font = GImGui->Font;
+ const float line_height = GImGui->FontSize;
+ const float scale = line_height / font->FontSize;
+
+ ImVec2 text_size = ImVec2(0,0);
+ float line_width = 0.0f;
+
+ const ImWchar* s = text_begin;
+ while (s < text_end)
+ {
+ unsigned int c = (unsigned int)(*s++);
+ if (c == '\n')
+ {
+ text_size.x = ImMax(text_size.x, line_width);
+ text_size.y += line_height;
+ line_width = 0.0f;
+ if (stop_on_new_line)
+ break;
+ continue;
+ }
+ if (c == '\r')
+ continue;
+
+ const float char_width = font->GetCharAdvance((unsigned short)c) * scale;
+ line_width += char_width;
+ }
+
+ if (text_size.x < line_width)
+ text_size.x = line_width;
+
+ if (out_offset)
+ *out_offset = ImVec2(line_width, text_size.y + line_height); // offset allow for the possibility of sitting after a trailing \n
+
+ if (line_width > 0 || text_size.y == 0.0f) // whereas size.y will ignore the trailing \n
+ text_size.y += line_height;
+
+ if (remaining)
+ *remaining = s;
+
+ return text_size;
+}
+
+// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
+namespace ImGuiStb
+{
+
+static int STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj) { return obj->CurLenW; }
+static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx) { return obj->TextW[idx]; }
+static float STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx) { ImWchar c = obj->TextW[line_start_idx+char_idx]; if (c == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return GImGui->Font->GetCharAdvance(c) * (GImGui->FontSize / GImGui->Font->FontSize); }
+static int STB_TEXTEDIT_KEYTOTEXT(int key) { return key >= 0x10000 ? 0 : key; }
+static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
+static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
+{
+ const ImWchar* text = obj->TextW.Data;
+ const ImWchar* text_remaining = NULL;
+ const ImVec2 size = InputTextCalcTextSizeW(text + line_start_idx, text + obj->CurLenW, &text_remaining, NULL, true);
+ r->x0 = 0.0f;
+ r->x1 = size.x;
+ r->baseline_y_delta = size.y;
+ r->ymin = 0.0f;
+ r->ymax = size.y;
+ r->num_chars = (int)(text_remaining - (text + line_start_idx));
+}
+
+static bool is_separator(unsigned int c) { return ImCharIsBlankW(c) || c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; }
+static int is_word_boundary_from_right(STB_TEXTEDIT_STRING* obj, int idx) { return idx > 0 ? (is_separator( obj->TextW[idx-1] ) && !is_separator( obj->TextW[idx] ) ) : 1; }
+static int STB_TEXTEDIT_MOVEWORDLEFT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx--; while (idx >= 0 && !is_word_boundary_from_right(obj, idx)) idx--; return idx < 0 ? 0 : idx; }
+#ifdef __APPLE__ // FIXME: Move setting to IO structure
+static int is_word_boundary_from_left(STB_TEXTEDIT_STRING* obj, int idx) { return idx > 0 ? (!is_separator( obj->TextW[idx-1] ) && is_separator( obj->TextW[idx] ) ) : 1; }
+static int STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_left(obj, idx)) idx++; return idx > len ? len : idx; }
+#else
+static int STB_TEXTEDIT_MOVEWORDRIGHT_IMPL(STB_TEXTEDIT_STRING* obj, int idx) { idx++; int len = obj->CurLenW; while (idx < len && !is_word_boundary_from_right(obj, idx)) idx++; return idx > len ? len : idx; }
+#endif
+#define STB_TEXTEDIT_MOVEWORDLEFT STB_TEXTEDIT_MOVEWORDLEFT_IMPL // They need to be #define for stb_textedit.h
+#define STB_TEXTEDIT_MOVEWORDRIGHT STB_TEXTEDIT_MOVEWORDRIGHT_IMPL
+
+static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n)
+{
+ ImWchar* dst = obj->TextW.Data + pos;
+
+ // We maintain our buffer length in both UTF-8 and wchar formats
+ obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n);
+ obj->CurLenW -= n;
+
+ // Offset remaining text
+ const ImWchar* src = obj->TextW.Data + pos + n;
+ while (ImWchar c = *src++)
+ *dst++ = c;
+ *dst = '\0';
+}
+
+static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len)
+{
+ const bool is_resizable = (obj->UserFlags & ImGuiInputTextFlags_CallbackResize) != 0;
+ const int text_len = obj->CurLenW;
+ IM_ASSERT(pos <= text_len);
+
+ const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len);
+ if (!is_resizable && (new_text_len_utf8 + obj->CurLenA + 1 > obj->BufCapacityA))
+ return false;
+
+ // Grow internal buffer if needed
+ if (new_text_len + text_len + 1 > obj->TextW.Size)
+ {
+ if (!is_resizable)
+ return false;
+ IM_ASSERT(text_len < obj->TextW.Size);
+ obj->TextW.resize(text_len + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1);
+ }
+
+ ImWchar* text = obj->TextW.Data;
+ if (pos != text_len)
+ memmove(text + pos + new_text_len, text + pos, (size_t)(text_len - pos) * sizeof(ImWchar));
+ memcpy(text + pos, new_text, (size_t)new_text_len * sizeof(ImWchar));
+
+ obj->CurLenW += new_text_len;
+ obj->CurLenA += new_text_len_utf8;
+ obj->TextW[obj->CurLenW] = '\0';
+
+ return true;
+}
+
+// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols)
+#define STB_TEXTEDIT_K_LEFT 0x10000 // keyboard input to move cursor left
+#define STB_TEXTEDIT_K_RIGHT 0x10001 // keyboard input to move cursor right
+#define STB_TEXTEDIT_K_UP 0x10002 // keyboard input to move cursor up
+#define STB_TEXTEDIT_K_DOWN 0x10003 // keyboard input to move cursor down
+#define STB_TEXTEDIT_K_LINESTART 0x10004 // keyboard input to move cursor to start of line
+#define STB_TEXTEDIT_K_LINEEND 0x10005 // keyboard input to move cursor to end of line
+#define STB_TEXTEDIT_K_TEXTSTART 0x10006 // keyboard input to move cursor to start of text
+#define STB_TEXTEDIT_K_TEXTEND 0x10007 // keyboard input to move cursor to end of text
+#define STB_TEXTEDIT_K_DELETE 0x10008 // keyboard input to delete selection or character under cursor
+#define STB_TEXTEDIT_K_BACKSPACE 0x10009 // keyboard input to delete selection or character left of cursor
+#define STB_TEXTEDIT_K_UNDO 0x1000A // keyboard input to perform undo
+#define STB_TEXTEDIT_K_REDO 0x1000B // keyboard input to perform redo
+#define STB_TEXTEDIT_K_WORDLEFT 0x1000C // keyboard input to move cursor left one word
+#define STB_TEXTEDIT_K_WORDRIGHT 0x1000D // keyboard input to move cursor right one word
+#define STB_TEXTEDIT_K_SHIFT 0x20000
+
+#define STB_TEXTEDIT_IMPLEMENTATION
+#include "stb_textedit.h"
+
+}
+
+void ImGuiInputTextState::OnKeyPressed(int key)
+{
+ stb_textedit_key(this, &StbState, key);
+ CursorFollow = true;
+ CursorAnimReset();
+}
+
+ImGuiInputTextCallbackData::ImGuiInputTextCallbackData()
+{
+ memset(this, 0, sizeof(*this));
+}
+
+// Public API to manipulate UTF-8 text
+// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
+// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
+void ImGuiInputTextCallbackData::DeleteChars(int pos, int bytes_count)
+{
+ IM_ASSERT(pos + bytes_count <= BufTextLen);
+ char* dst = Buf + pos;
+ const char* src = Buf + pos + bytes_count;
+ while (char c = *src++)
+ *dst++ = c;
+ *dst = '\0';
+
+ if (CursorPos + bytes_count >= pos)
+ CursorPos -= bytes_count;
+ else if (CursorPos >= pos)
+ CursorPos = pos;
+ SelectionStart = SelectionEnd = CursorPos;
+ BufDirty = true;
+ BufTextLen -= bytes_count;
+}
+
+void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
+{
+ const bool is_resizable = (Flags & ImGuiInputTextFlags_CallbackResize) != 0;
+ const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
+ if (new_text_len + BufTextLen >= BufSize)
+ {
+ if (!is_resizable)
+ return;
+
+ // Contrary to STB_TEXTEDIT_INSERTCHARS() this is working in the UTF8 buffer, hence the midly similar code (until we remove the U16 buffer alltogether!)
+ ImGuiContext& g = *GImGui;
+ ImGuiInputTextState* edit_state = &g.InputTextState;
+ IM_ASSERT(edit_state->ID != 0 && g.ActiveId == edit_state->ID);
+ IM_ASSERT(Buf == edit_state->TempBuffer.Data);
+ int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
+ edit_state->TempBuffer.reserve(new_buf_size + 1);
+ Buf = edit_state->TempBuffer.Data;
+ BufSize = edit_state->BufCapacityA = new_buf_size;
+ }
+
+ if (BufTextLen != pos)
+ memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
+ memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
+ Buf[BufTextLen + new_text_len] = '\0';
+
+ if (CursorPos >= pos)
+ CursorPos += new_text_len;
+ SelectionStart = SelectionEnd = CursorPos;
+ BufDirty = true;
+ BufTextLen += new_text_len;
+}
+
+// Return false to discard a character.
+static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
+{
+ unsigned int c = *p_char;
+
+ if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
+ {
+ bool pass = false;
+ pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
+ pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
+ if (!pass)
+ return false;
+ }
+
+ if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
+ return false;
+
+ if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank | ImGuiInputTextFlags_CharsScientific))
+ {
+ if (flags & ImGuiInputTextFlags_CharsDecimal)
+ if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/'))
+ return false;
+
+ if (flags & ImGuiInputTextFlags_CharsScientific)
+ if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/') && (c != 'e') && (c != 'E'))
+ return false;
+
+ if (flags & ImGuiInputTextFlags_CharsHexadecimal)
+ if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
+ return false;
+
+ if (flags & ImGuiInputTextFlags_CharsUppercase)
+ if (c >= 'a' && c <= 'z')
+ *p_char = (c += (unsigned int)('A'-'a'));
+
+ if (flags & ImGuiInputTextFlags_CharsNoBlank)
+ if (ImCharIsBlankW(c))
+ return false;
+ }
+
+ if (flags & ImGuiInputTextFlags_CallbackCharFilter)
+ {
+ ImGuiInputTextCallbackData callback_data;
+ memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
+ callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
+ callback_data.EventChar = (ImWchar)c;
+ callback_data.Flags = flags;
+ callback_data.UserData = user_data;
+ if (callback(&callback_data) != 0)
+ return false;
+ *p_char = callback_data.EventChar;
+ if (!callback_data.EventChar)
+ return false;
+ }
+
+ return true;
+}
+
+// Edit a string of text
+// - buf_size account for the zero-terminator, so a buf_size of 6 can hold "Hello" but not "Hello!".
+// This is so we can easily call InputText() on static arrays using ARRAYSIZE() and to match
+// Note that in std::string world, capacity() would omit 1 byte used by the zero-terminator.
+// - When active, hold on a privately held copy of the text (and apply back to 'buf'). So changing 'buf' while the InputText is active has no effect.
+// - If you want to use ImGui::InputText() with std::string, see misc/stl/imgui_stl.h
+// (FIXME: Rather messy function partly because we are doing UTF8 > u16 > UTF8 conversions on the go to more easily handle stb_textedit calls. Ideally we should stay in UTF-8 all the time. See https://github.com/nothings/stb/issues/188)
+bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* callback_user_data)
+{
+ ImGuiWindow* window = GetCurrentWindow();
+ if (window->SkipItems)
+ return false;
+
+ IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline))); // Can't use both together (they both use up/down keys)
+ IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
+
+ ImGuiContext& g = *GImGui;
+ const ImGuiIO& io = g.IO;
+ const ImGuiStyle& style = g.Style;
+
+ const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
+ const bool is_editable = (flags & ImGuiInputTextFlags_ReadOnly) == 0;
+ const bool is_password = (flags & ImGuiInputTextFlags_Password) != 0;
+ const bool is_undoable = (flags & ImGuiInputTextFlags_NoUndoRedo) == 0;
+ const bool is_resizable = (flags & ImGuiInputTextFlags_CallbackResize) != 0;
+ if (is_resizable)
+ IM_ASSERT(callback != NULL); // Must provide a callback if you set the ImGuiInputTextFlags_CallbackResize flag!
+
+ if (is_multiline) // Open group before calling GetID() because groups tracks id created within their scope,
+ BeginGroup();
+ const ImGuiID id = window->GetID(label);
+ const ImVec2 label_size = CalcTextSize(label, NULL, true);
+ ImVec2 size = CalcItemSize(size_arg, CalcItemWidth(), (is_multiline ? GetTextLineHeight() * 8.0f : label_size.y) + style.FramePadding.y*2.0f); // Arbitrary default of 8 lines high for multi-line
+ const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size);
+ const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
+
+ ImGuiWindow* draw_window = window;
+ if (is_multiline)
+ {
+ ItemAdd(total_bb, id, &frame_bb);
+ if (!BeginChildFrame(id, frame_bb.GetSize()))
+ {
+ EndChildFrame();
+ EndGroup();
+ return false;
+ }
+ draw_window = GetCurrentWindow();
+ draw_window->DC.NavLayerActiveMaskNext |= draw_window->DC.NavLayerCurrentMask; // This is to ensure that EndChild() will display a navigation highlight
+ size.x -= draw_window->ScrollbarSizes.x;
+ }
+ else
+ {
+ ItemSize(total_bb, style.FramePadding.y);
+ if (!ItemAdd(total_bb, id, &frame_bb))
+ return false;
+ }
+ const bool hovered = ItemHoverable(frame_bb, id);
+ if (hovered)
+ g.MouseCursor = ImGuiMouseCursor_TextInput;
+
+ // Password pushes a temporary font with only a fallback glyph
+ if (is_password)
+ {
+ const ImFontGlyph* glyph = g.Font->FindGlyph('*');
+ ImFont* password_font = &g.InputTextPasswordFont;
+ password_font->FontSize = g.Font->FontSize;
+ password_font->Scale = g.Font->Scale;
+ password_font->DisplayOffset = g.Font->DisplayOffset;
+ password_font->Ascent = g.Font->Ascent;
+ password_font->Descent = g.Font->Descent;
+ password_font->ContainerAtlas = g.Font->ContainerAtlas;
+ password_font->FallbackGlyph = glyph;
+ password_font->FallbackAdvanceX = glyph->AdvanceX;
+ IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
+ PushFont(password_font);
+ }
+
+ // NB: we are only allowed to access 'edit_state' if we are the active widget.
+ ImGuiInputTextState& edit_state = g.InputTextState;
+
+ const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0); // Using completion callback disable keyboard tabbing
+ const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
+ const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
+
+ const bool user_clicked = hovered && io.MouseClicked[0];
+ const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.ID == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
+ const bool user_nav_input_start = (g.ActiveId != id) && ((g.NavInputId == id) || (g.NavActivateId == id && g.NavInputSource == ImGuiInputSource_NavKeyboard));
+
+ bool clear_active_id = false;
+
+ bool select_all = (g.ActiveId != id) && ((flags & ImGuiInputTextFlags_AutoSelectAll) != 0 || user_nav_input_start) && (!is_multiline);
+ if (focus_requested || user_clicked || user_scrolled || user_nav_input_start)
+ {
+ if (g.ActiveId != id)
+ {
+ // Start edition
+ // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
+ // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
+ const int prev_len_w = edit_state.CurLenW;
+ const int init_buf_len = (int)strlen(buf);
+ edit_state.TextW.resize(buf_size+1); // wchar count <= UTF-8 count. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
+ edit_state.InitialText.resize(init_buf_len + 1); // UTF-8. we use +1 to make sure that .Data isn't NULL so it doesn't crash.
+ memcpy(edit_state.InitialText.Data, buf, init_buf_len + 1);
+ const char* buf_end = NULL;
+ edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, buf_size, buf, NULL, &buf_end);
+ edit_state.CurLenA = (int)(buf_end - buf); // We can't get the result from ImStrncpy() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
+ edit_state.CursorAnimReset();
+
+ // Preserve cursor position and undo/redo stack if we come back to same widget
+ // FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
+ const bool recycle_state = (edit_state.ID == id) && (prev_len_w == edit_state.CurLenW);
+ if (recycle_state)
+ {
+ // Recycle existing cursor/selection/undo stack but clamp position
+ // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
+ edit_state.CursorClamp();
+ }
+ else
+ {
+ edit_state.ID = id;
+ edit_state.ScrollX = 0.0f;
+ stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
+ if (!is_multiline && focus_requested_by_code)
+ select_all = true;
+ }
+ if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
+ edit_state.StbState.insert_mode = true;
+ if (!is_multiline && (focus_requested_by_tab || (user_clicked && io.KeyCtrl)))
+ select_all = true;
+ }
+ SetActiveID(id, window);
+ SetFocusID(id, window);
+ FocusWindow(window);
+ if (!is_multiline && !(flags & ImGuiInputTextFlags_CallbackHistory))
+ g.ActiveIdAllowNavDirFlags |= ((1 << ImGuiDir_Up) | (1 << ImGuiDir_Down));
+ }
+ else if (io.MouseClicked[0])
+ {
+ // Release focus when we click outside
+ clear_active_id = true;
+ }
+
+ bool value_changed = false;
+ bool enter_pressed = false;
+ int backup_current_text_length = 0;
+
+ if (g.ActiveId == id)
+ {
+ if (!is_editable && !g.ActiveIdIsJustActivated)
+ {
+ // When read-only we always use the live data passed to the function
+ edit_state.TextW.resize(buf_size+1);
+ const char* buf_end = NULL;
+ edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, buf, NULL, &buf_end);
+ edit_state.CurLenA = (int)(buf_end - buf);
+ edit_state.CursorClamp();
+ }
+
+ backup_current_text_length = edit_state.CurLenA;
+ edit_state.BufCapacityA = buf_size;
+ edit_state.UserFlags = flags;
+ edit_state.UserCallback = callback;
+ edit_state.UserCallbackData = callback_user_data;
+
+ // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
+ // Down the line we should have a cleaner library-wide concept of Selected vs Active.
+ g.ActiveIdAllowOverlap = !io.MouseDown[0];
+ g.WantTextInputNextFrame = 1;
+
+ // Edit in progress
+ const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + edit_state.ScrollX;
+ const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y - style.FramePadding.y) : (g.FontSize*0.5f));
+
+ const bool is_osx = io.ConfigMacOSXBehaviors;
+ if (select_all || (hovered && !is_osx && io.MouseDoubleClicked[0]))
+ {
+ edit_state.SelectAll();
+ edit_state.SelectedAllMouseLock = true;
+ }
+ else if (hovered && is_osx && io.MouseDoubleClicked[0])
+ {
+ // Double-click select a word only, OS X style (by simulating keystrokes)
+ edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT);
+ edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
+ }
+ else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock)
+ {
+ if (hovered)
+ {
+ stb_textedit_click(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
+ edit_state.CursorAnimReset();
+ }
+ }
+ else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock && (io.MouseDelta.x != 0.0f || io.MouseDelta.y != 0.0f))
+ {
+ stb_textedit_drag(&edit_state, &edit_state.StbState, mouse_x, mouse_y);
+ edit_state.CursorAnimReset();
+ edit_state.CursorFollow = true;
+ }
+ if (edit_state.SelectedAllMouseLock && !io.MouseDown[0])
+ edit_state.SelectedAllMouseLock = false;
+
+ if (io.InputCharacters[0])
+ {
+ // Process text input (before we check for Return because using some IME will effectively send a Return?)
+ // We ignore CTRL inputs, but need to allow ALT+CTRL as some keyboards (e.g. German) use AltGR (which _is_ Alt+Ctrl) to input certain characters.
+ bool ignore_inputs = (io.KeyCtrl && !io.KeyAlt) || (is_osx && io.KeySuper);
+ if (!ignore_inputs && is_editable && !user_nav_input_start)
+ for (int n = 0; n < IM_ARRAYSIZE(io.InputCharacters) && io.InputCharacters[n]; n++)
+ {
+ // Insert character if they pass filtering
+ unsigned int c = (unsigned int)io.InputCharacters[n];
+ if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+ edit_state.OnKeyPressed((int)c);
+ }
+
+ // Consume characters
+ memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
+ }
+ }
+
+ bool cancel_edit = false;
+ if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
+ {
+ // Handle key-presses
+ const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
+ const bool is_osx = io.ConfigMacOSXBehaviors;
+ const bool is_shortcut_key = (is_osx ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
+ const bool is_osx_shift_shortcut = is_osx && io.KeySuper && io.KeyShift && !io.KeyCtrl && !io.KeyAlt;
+ const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl; // OS X style: Text editing cursor movement using Alt instead of Ctrl
+ const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt; // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
+ const bool is_ctrl_key_only = io.KeyCtrl && !io.KeyShift && !io.KeyAlt && !io.KeySuper;
+ const bool is_shift_key_only = io.KeyShift && !io.KeyCtrl && !io.KeyAlt && !io.KeySuper;
+
+ const bool is_cut = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_X)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Delete))) && is_editable && !is_password && (!is_multiline || edit_state.HasSelection());
+ const bool is_copy = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_C)) || (is_ctrl_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && !is_password && (!is_multiline || edit_state.HasSelection());
+ const bool is_paste = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_V)) || (is_shift_key_only && IsKeyPressedMap(ImGuiKey_Insert))) && is_editable;
+ const bool is_undo = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Z)) && is_editable && is_undoable);
+ const bool is_redo = ((is_shortcut_key && IsKeyPressedMap(ImGuiKey_Y)) || (is_osx_shift_shortcut && IsKeyPressedMap(ImGuiKey_Z))) && is_editable && is_undoable;
+
+ if (IsKeyPressedMap(ImGuiKey_LeftArrow)) { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINESTART : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDLEFT : STB_TEXTEDIT_K_LEFT) | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_LINEEND : is_wordmove_key_down ? STB_TEXTEDIT_K_WORDRIGHT : STB_TEXTEDIT_K_RIGHT) | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_UpArrow) && is_multiline) { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMax(draw_window->Scroll.y - g.FontSize, 0.0f)); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTSTART : STB_TEXTEDIT_K_UP) | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_DownArrow) && is_multiline) { if (io.KeyCtrl) SetWindowScrollY(draw_window, ImMin(draw_window->Scroll.y + g.FontSize, GetScrollMaxY())); else edit_state.OnKeyPressed((is_startend_key_down ? STB_TEXTEDIT_K_TEXTEND : STB_TEXTEDIT_K_DOWN) | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_Home)) { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_End)) { edit_state.OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_Delete) && is_editable) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
+ else if (IsKeyPressedMap(ImGuiKey_Backspace) && is_editable)
+ {
+ if (!edit_state.HasSelection())
+ {
+ if (is_wordmove_key_down) edit_state.OnKeyPressed(STB_TEXTEDIT_K_WORDLEFT|STB_TEXTEDIT_K_SHIFT);
+ else if (is_osx && io.KeySuper && !io.KeyAlt && !io.KeyCtrl) edit_state.OnKeyPressed(STB_TEXTEDIT_K_LINESTART|STB_TEXTEDIT_K_SHIFT);
+ }
+ edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask);
+ }
+ else if (IsKeyPressedMap(ImGuiKey_Enter))
+ {
+ bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
+ if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
+ {
+ enter_pressed = clear_active_id = true;
+ }
+ else if (is_editable)
+ {
+ unsigned int c = '\n'; // Insert new line
+ if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+ edit_state.OnKeyPressed((int)c);
+ }
+ }
+ else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab) && !io.KeyCtrl && !io.KeyShift && !io.KeyAlt && is_editable)
+ {
+ unsigned int c = '\t'; // Insert TAB
+ if (InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+ edit_state.OnKeyPressed((int)c);
+ }
+ else if (IsKeyPressedMap(ImGuiKey_Escape))
+ {
+ clear_active_id = cancel_edit = true;
+ }
+ else if (is_undo || is_redo)
+ {
+ edit_state.OnKeyPressed(is_undo ? STB_TEXTEDIT_K_UNDO : STB_TEXTEDIT_K_REDO);
+ edit_state.ClearSelection();
+ }
+ else if (is_shortcut_key && IsKeyPressedMap(ImGuiKey_A))
+ {
+ edit_state.SelectAll();
+ edit_state.CursorFollow = true;
+ }
+ else if (is_cut || is_copy)
+ {
+ // Cut, Copy
+ if (io.SetClipboardTextFn)
+ {
+ const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0;
+ const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : edit_state.CurLenW;
+ edit_state.TempBuffer.resize((ie-ib) * 4 + 1);
+ ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data+ib, edit_state.TextW.Data+ie);
+ SetClipboardText(edit_state.TempBuffer.Data);
+ }
+ if (is_cut)
+ {
+ if (!edit_state.HasSelection())
+ edit_state.SelectAll();
+ edit_state.CursorFollow = true;
+ stb_textedit_cut(&edit_state, &edit_state.StbState);
+ }
+ }
+ else if (is_paste)
+ {
+ if (const char* clipboard = GetClipboardText())
+ {
+ // Filter pasted buffer
+ const int clipboard_len = (int)strlen(clipboard);
+ ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar));
+ int clipboard_filtered_len = 0;
+ for (const char* s = clipboard; *s; )
+ {
+ unsigned int c;
+ s += ImTextCharFromUtf8(&c, s, NULL);
+ if (c == 0)
+ break;
+ if (c >= 0x10000 || !InputTextFilterCharacter(&c, flags, callback, callback_user_data))
+ continue;
+ clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;
+ }
+ clipboard_filtered[clipboard_filtered_len] = 0;
+ if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation
+ {
+ stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len);
+ edit_state.CursorFollow = true;
+ }
+ ImGui::MemFree(clipboard_filtered);
+ }
+ }
+ }
+
+ if (g.ActiveId == id)
+ {
+ const char* apply_new_text = NULL;
+ int apply_new_text_length = 0;
+ if (cancel_edit)
+ {
+ // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
+ if (is_editable && strcmp(buf, edit_state.InitialText.Data) != 0)
+ {
+ apply_new_text = edit_state.InitialText.Data;
+ apply_new_text_length = edit_state.InitialText.Size - 1;
+ }
+ }
+
+ // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
+ // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
+ bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
+ if (apply_edit_back_to_user_buffer)
+ {
+ // Apply new value immediately - copy modified buffer back
+ // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
+ // FIXME: We actually always render 'buf' when calling DrawList->AddText, making the comment above incorrect.
+ // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks.
+ if (is_editable)
+ {
+ edit_state.TempBuffer.resize(edit_state.TextW.Size * 4 + 1);
+ ImTextStrToUtf8(edit_state.TempBuffer.Data, edit_state.TempBuffer.Size, edit_state.TextW.Data, NULL);
+ }
+
+ // User callback
+ if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0)
+ {
+ IM_ASSERT(callback != NULL);
+
+ // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment.
+ ImGuiInputTextFlags event_flag = 0;
+ ImGuiKey event_key = ImGuiKey_COUNT;
+ if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab))
+ {
+ event_flag = ImGuiInputTextFlags_CallbackCompletion;
+ event_key = ImGuiKey_Tab;
+ }
+ else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow))
+ {
+ event_flag = ImGuiInputTextFlags_CallbackHistory;
+ event_key = ImGuiKey_UpArrow;
+ }
+ else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow))
+ {
+ event_flag = ImGuiInputTextFlags_CallbackHistory;
+ event_key = ImGuiKey_DownArrow;
+ }
+ else if (flags & ImGuiInputTextFlags_CallbackAlways)
+ event_flag = ImGuiInputTextFlags_CallbackAlways;
+
+ if (event_flag)
+ {
+ ImGuiInputTextCallbackData callback_data;
+ memset(&callback_data, 0, sizeof(ImGuiInputTextCallbackData));
+ callback_data.EventFlag = event_flag;
+ callback_data.Flags = flags;
+ callback_data.UserData = callback_user_data;
+
+ callback_data.EventKey = event_key;
+ callback_data.Buf = edit_state.TempBuffer.Data;
+ callback_data.BufTextLen = edit_state.CurLenA;
+ callback_data.BufSize = edit_state.BufCapacityA;
+ callback_data.BufDirty = false;
+
+ // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
+ ImWchar* text = edit_state.TextW.Data;
+ const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
+ const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
+ const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_end);
+
+ // Call user code
+ callback(&callback_data);
+
+ // Read back what user may have modified
+ IM_ASSERT(callback_data.Buf == edit_state.TempBuffer.Data); // Invalid to modify those fields
+ IM_ASSERT(callback_data.BufSize == edit_state.BufCapacityA);
+ IM_ASSERT(callback_data.Flags == flags);
+ if (callback_data.CursorPos != utf8_cursor_pos) { edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); edit_state.CursorFollow = true; }
+ if (callback_data.SelectionStart != utf8_selection_start) { edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); }
+ if (callback_data.SelectionEnd != utf8_selection_end) { edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); }
+ if (callback_data.BufDirty)
+ {
+ IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
+ if (callback_data.BufTextLen > backup_current_text_length && is_resizable)
+ edit_state.TextW.resize(edit_state.TextW.Size + (callback_data.BufTextLen - backup_current_text_length));
+ edit_state.CurLenW = ImTextStrFromUtf8(edit_state.TextW.Data, edit_state.TextW.Size, callback_data.Buf, NULL);
+ edit_state.CurLenA = callback_data.BufTextLen; // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
+ edit_state.CursorAnimReset();
+ }
+ }
+ }
+
+ // Will copy result string if modified
+ if (is_editable && strcmp(edit_state.TempBuffer.Data, buf) != 0)
+ {
+ apply_new_text = edit_state.TempBuffer.Data;
+ apply_new_text_length = edit_state.CurLenA;
+ }
+ }
+
+ // Copy result to user buffer
+ if (apply_new_text)
+ {
+ IM_ASSERT(apply_new_text_length >= 0);
+ if (backup_current_text_length != apply_new_text_length && is_resizable)
+ {
+ ImGuiInputTextCallbackData callback_data;
+ callback_data.EventFlag = ImGuiInputTextFlags_CallbackResize;
+ callback_data.Flags = flags;
+ callback_data.Buf = buf;
+ callback_data.BufTextLen = apply_new_text_length;
+ callback_data.BufSize = ImMax(buf_size, apply_new_text_length + 1);
+ callback_data.UserData = callback_user_data;
+ callback(&callback_data);
+ buf = callback_data.Buf;
+ buf_size = callback_data.BufSize;
+ apply_new_text_length = ImMin(callback_data.BufTextLen, buf_size - 1);
+ IM_ASSERT(apply_new_text_length <= buf_size);
+ }
+
+ // If the underlying buffer resize was denied or not carried to the next frame, apply_new_text_length+1 may be >= buf_size.
+ ImStrncpy(buf, edit_state.TempBuffer.Data, ImMin(apply_new_text_length + 1, buf_size));
+ value_changed = true;
+ }
+
+ // Clear temporary user storage
+ edit_state.UserFlags = 0;
+ edit_state.UserCallback = NULL;
+ edit_state.UserCallbackData = NULL;
+ }
+
+ // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
+ if (clear_active_id && g.ActiveId == id)
+ ClearActiveID();
+
+ // Render
+ // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
+ const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempBuffer.Data : buf; buf = NULL;
+
+ // Set upper limit of single-line InputTextEx() at 2 million characters strings. The current pathological worst case is a long line
+ // without any carriage return, which would makes ImFont::RenderText() reserve too many vertices and probably crash. Avoid it altogether.
+ // Note that we only use this limit on single-line InputText(), so a pathologically large line on a InputTextMultiline() would still crash.
+ const int buf_display_max_length = 2 * 1024 * 1024;
+
+ if (!is_multiline)
+ {
+ RenderNavHighlight(frame_bb, id);
+ RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
+ }
+
+ const ImVec4 clip_rect(frame_bb.Min.x, frame_bb.Min.y, frame_bb.Min.x + size.x, frame_bb.Min.y + size.y); // Not using frame_bb.Max because we have adjusted size
+ ImVec2 render_pos = is_multiline ? draw_window->DC.CursorPos : frame_bb.Min + style.FramePadding;
+ ImVec2 text_size(0.f, 0.f);
+ const bool is_currently_scrolling = (edit_state.ID == id && is_multiline && g.ActiveId == draw_window->GetIDNoKeepAlive("#SCROLLY"));
+ if (g.ActiveId == id || is_currently_scrolling)
+ {
+ edit_state.CursorAnim += io.DeltaTime;
+
+ // This is going to be messy. We need to:
+ // - Display the text (this alone can be more easily clipped)
+ // - Handle scrolling, highlight selection, display cursor (those all requires some form of 1d->2d cursor position calculation)
+ // - Measure text height (for scrollbar)
+ // We are attempting to do most of that in **one main pass** to minimize the computation cost (non-negligible for large amount of text) + 2nd pass for selection rendering (we could merge them by an extra refactoring effort)
+ // FIXME: This should occur on buf_display but we'd need to maintain cursor/select_start/select_end for UTF-8.
+ const ImWchar* text_begin = edit_state.TextW.Data;
+ ImVec2 cursor_offset, select_start_offset;
+
+ {
+ // Count lines + find lines numbers straddling 'cursor' and 'select_start' position.
+ const ImWchar* searches_input_ptr[2];
+ searches_input_ptr[0] = text_begin + edit_state.StbState.cursor;
+ searches_input_ptr[1] = NULL;
+ int searches_remaining = 1;
+ int searches_result_line_number[2] = { -1, -999 };
+ if (edit_state.StbState.select_start != edit_state.StbState.select_end)
+ {
+ searches_input_ptr[1] = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
+ searches_result_line_number[1] = -1;
+ searches_remaining++;
+ }
+
+ // Iterate all lines to find our line numbers
+ // In multi-line mode, we never exit the loop until all lines are counted, so add one extra to the searches_remaining counter.
+ searches_remaining += is_multiline ? 1 : 0;
+ int line_count = 0;
+ for (const ImWchar* s = text_begin; *s != 0; s++)
+ if (*s == '\n')
+ {
+ line_count++;
+ if (searches_result_line_number[0] == -1 && s >= searches_input_ptr[0]) { searches_result_line_number[0] = line_count; if (--searches_remaining <= 0) break; }
+ if (searches_result_line_number[1] == -1 && s >= searches_input_ptr[1]) { searches_result_line_number[1] = line_count; if (--searches_remaining <= 0) break; }
+ }
+ line_count++;
+ if (searches_result_line_number[0] == -1) searches_result_line_number[0] = line_count;
+ if (searches_result_line_number[1] == -1) searches_result_line_number[1] = line_count;
+
+ // Calculate 2d position by finding the beginning of the line and measuring distance
+ cursor_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[0], text_begin), searches_input_ptr[0]).x;
+ cursor_offset.y = searches_result_line_number[0] * g.FontSize;
+ if (searches_result_line_number[1] >= 0)
+ {
+ select_start_offset.x = InputTextCalcTextSizeW(ImStrbolW(searches_input_ptr[1], text_begin), searches_input_ptr[1]).x;
+ select_start_offset.y = searches_result_line_number[1] * g.FontSize;
+ }
+
+ // Store text height (note that we haven't calculated text width at all, see GitHub issues #383, #1224)
+ if (is_multiline)
+ text_size = ImVec2(size.x, line_count * g.FontSize);
+ }
+
+ // Scroll
+ if (edit_state.CursorFollow)
+ {
+ // Horizontal scroll in chunks of quarter width
+ if (!(flags & ImGuiInputTextFlags_NoHorizontalScroll))
+ {
+ const float scroll_increment_x = size.x * 0.25f;
+ if (cursor_offset.x < edit_state.ScrollX)
+ edit_state.ScrollX = (float)(int)ImMax(0.0f, cursor_offset.x - scroll_increment_x);
+ else if (cursor_offset.x - size.x >= edit_state.ScrollX)
+ edit_state.ScrollX = (float)(int)(cursor_offset.x - size.x + scroll_increment_x);
+ }
+ else
+ {
+ edit_state.ScrollX = 0.0f;
+ }
+
+ // Vertical scroll
+ if (is_multiline)
+ {
+ float scroll_y = draw_window->Scroll.y;
+ if (cursor_offset.y - g.FontSize < scroll_y)
+ scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
+ else if (cursor_offset.y - size.y >= scroll_y)
+ scroll_y = cursor_offset.y - size.y;
+ draw_window->DC.CursorPos.y += (draw_window->Scroll.y - scroll_y); // To avoid a frame of lag
+ draw_window->Scroll.y = scroll_y;
+ render_pos.y = draw_window->DC.CursorPos.y;
+ }
+ }
+ edit_state.CursorFollow = false;
+ const ImVec2 render_scroll = ImVec2(edit_state.ScrollX, 0.0f);
+
+ // Draw selection
+ if (edit_state.StbState.select_start != edit_state.StbState.select_end)
+ {
+ const ImWchar* text_selected_begin = text_begin + ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end);
+ const ImWchar* text_selected_end = text_begin + ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end);
+
+ float bg_offy_up = is_multiline ? 0.0f : -1.0f; // FIXME: those offsets should be part of the style? they don't play so well with multi-line selection.
+ float bg_offy_dn = is_multiline ? 0.0f : 2.0f;
+ ImU32 bg_color = GetColorU32(ImGuiCol_TextSelectedBg);
+ ImVec2 rect_pos = render_pos + select_start_offset - render_scroll;
+ for (const ImWchar* p = text_selected_begin; p < text_selected_end; )
+ {
+ if (rect_pos.y > clip_rect.w + g.FontSize)
+ break;
+ if (rect_pos.y < clip_rect.y)
+ {
+ while (p < text_selected_end)
+ if (*p++ == '\n')
+ break;
+ }
+ else
+ {
+ ImVec2 rect_size = InputTextCalcTextSizeW(p, text_selected_end, &p, NULL, true);
+ if (rect_size.x <= 0.0f) rect_size.x = (float)(int)(g.Font->GetCharAdvance((unsigned short)' ') * 0.50f); // So we can see selected empty lines
+ ImRect rect(rect_pos + ImVec2(0.0f, bg_offy_up - g.FontSize), rect_pos +ImVec2(rect_size.x, bg_offy_dn));
+ rect.ClipWith(clip_rect);
+ if (rect.Overlaps(clip_rect))
+ draw_window->DrawList->AddRectFilled(rect.Min, rect.Max, bg_color);
+ }
+ rect_pos.x = render_pos.x - render_scroll.x;
+ rect_pos.y += g.FontSize;
+ }
+ }
+
+ const int buf_display_len = edit_state.CurLenA;
+ if (is_multiline || buf_display_len < buf_display_max_length)
+ draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos - render_scroll, GetColorU32(ImGuiCol_Text), buf_display, buf_display + buf_display_len, 0.0f, is_multiline ? NULL : &clip_rect);
+
+ // Draw blinking cursor
+ bool cursor_is_visible = (!g.IO.ConfigCursorBlink) || (g.InputTextState.CursorAnim <= 0.0f) || ImFmod(g.InputTextState.CursorAnim, 1.20f) <= 0.80f;
+ ImVec2 cursor_screen_pos = render_pos + cursor_offset - render_scroll;
+ ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y-g.FontSize+0.5f, cursor_screen_pos.x+1.0f, cursor_screen_pos.y-1.5f);
+ if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
+ draw_window->DrawList->AddLine(cursor_screen_rect.Min, cursor_screen_rect.GetBL(), GetColorU32(ImGuiCol_Text));
+
+ // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
+ if (is_editable)
+ g.PlatformImePos = ImVec2(cursor_screen_pos.x - 1, cursor_screen_pos.y - g.FontSize);
+ }
+ else
+ {
+ // Render text only
+ const char* buf_end = NULL;
+ if (is_multiline)
+ text_size = ImVec2(size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_end) * g.FontSize); // We don't need width
+ else
+ buf_end = buf_display + strlen(buf_display);
+ if (is_multiline || (buf_end - buf_display) < buf_display_max_length)
+ draw_window->DrawList->AddText(g.Font, g.FontSize, render_pos, GetColorU32(ImGuiCol_Text), buf_display, buf_end, 0.0f, is_multiline ? NULL : &clip_rect);
+ }
+
+ if (is_multiline)
+ {
+ Dummy(text_size + ImVec2(0.0f, g.FontSize)); // Always add room to scroll an extra line
+ EndChildFrame();
+ EndGroup();
+ }
+
+ if (is_password)
+ PopFont();
+
+ // Log as text
+ if (g.LogEnabled && !is_password)
+ LogRenderedText(&render_pos, buf_display, NULL);
+
+ if (label_size.x > 0)
+ RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
+
+ if (value_changed)
+ MarkItemEdited(id);
+
+ if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0)
+ return enter_pressed;
+ else
+ return value_changed;
+}
//-------------------------------------------------------------------------
// WIDGETS: Color Editor / Picker
