InputText: Internals: rename CurLenA->TextLen, InitialTextA->TextToRevertTo.

Follow the refactors in #7925.

imgui_internal.h

@@ -1109,11 +1109,11 @@ struct IMGUI_API ImGuiInputTextState
     ImGuiContext*           Ctx;                    // parent UI context (needs to be set explicitly by parent).
     ImStbTexteditState*     Stb;                    // State for stb_textedit.h
     ImGuiID                 ID;                     // widget id owning the text state
-    int                     CurLenA;                // UTF-8 length of the string in TextA (in bytes)
+    int                     TextLen;                // UTF-8 length of the string in TextA (in bytes)
     ImVector<char>          TextA;                  // main UTF8 buffer. TextA.Size is a buffer size! Should always be >= buf_size passed by user (and of course >= CurLenA + 1).
-    ImVector<char>          InitialTextA;           // value to revert to when pressing Escape = backup of end-user buffer at the time of focus (in UTF-8, unaltered)
+    ImVector<char>          TextToRevertTo;         // value to revert to when pressing Escape = backup of end-user buffer at the time of focus (in UTF-8, unaltered)
     ImVector<char>          CallbackTextBackup;     // temporary storage for callback to support automatic reconcile of undo-stack
-    int                     BufCapacityA;           // end-user buffer capacity
+    int                     BufCapacity;            // end-user buffer capacity (include zero terminator)
     ImVec2                  Scroll;                 // horizontal offset (managed manually) + vertical scrolling (pulled from child window's own Scroll.y)
     float                   CursorAnim;             // timer for cursor blink, reset on every user action so the cursor reappears immediately
     bool                    CursorFollow;           // set when we want scrolling to follow the current cursor position (not always!)
@@ -1126,8 +1126,8 @@ struct IMGUI_API ImGuiInputTextState
 
     ImGuiInputTextState();
     ~ImGuiInputTextState();
-    void        ClearText()                 { CurLenA = 0; TextA[0] = 0; CursorClamp(); }
-    void        ClearFreeMemory()           { TextA.clear(); InitialTextA.clear(); }
+    void        ClearText()                 { TextLen = 0; TextA[0] = 0; CursorClamp(); }
+    void        ClearFreeMemory()           { TextA.clear(); TextToRevertTo.clear(); }
     void        OnKeyPressed(int key);      // Cannot be inline because we call in code in stb_textedit.h implementation
     void        OnCharPressed(unsigned int c);
 

imgui_widgets.cpp

@@ -3928,15 +3928,15 @@ static ImVec2 InputTextCalcTextSize(ImGuiContext* ctx, const char* text_begin, c
 // - ...but we don't use that feature.
 namespace ImStb
 {
-static int     STB_TEXTEDIT_STRINGLEN(const ImGuiInputTextState* obj)                             { return obj->CurLenA; }
-static char    STB_TEXTEDIT_GETCHAR(const ImGuiInputTextState* obj, int idx)                      { IM_ASSERT(idx <= obj->CurLenA); return obj->TextA[idx]; }
-static float   STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx)  { unsigned int c; ImTextCharFromUtf8(&c, obj->TextA.Data + line_start_idx + char_idx, obj->TextA.Data + obj->CurLenA); if ((ImWchar)c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance((ImWchar)c) * g.FontScale; }
+static int     STB_TEXTEDIT_STRINGLEN(const ImGuiInputTextState* obj)                             { return obj->TextLen; }
+static char    STB_TEXTEDIT_GETCHAR(const ImGuiInputTextState* obj, int idx)                      { IM_ASSERT(idx <= obj->TextLen); return obj->TextA[idx]; }
+static float   STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx)  { unsigned int c; ImTextCharFromUtf8(&c, obj->TextA.Data + line_start_idx + char_idx, obj->TextA.Data + obj->TextLen); if ((ImWchar)c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance((ImWchar)c) * g.FontScale; }
 static char    STB_TEXTEDIT_NEWLINE = '\n';
 static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, ImGuiInputTextState* obj, int line_start_idx)
 {
     const char* text = obj->TextA.Data;
     const char* text_remaining = NULL;
-    const ImVec2 size = InputTextCalcTextSize(obj->Ctx, text + line_start_idx, text + obj->CurLenA, &text_remaining, NULL, true);
+    const ImVec2 size = InputTextCalcTextSize(obj->Ctx, text + line_start_idx, text + obj->TextLen, &text_remaining, NULL, true);
     r->x0 = 0.0f;
     r->x1 = size.x;
     r->baseline_y_delta = size.y;
@@ -3950,10 +3950,10 @@ static void    STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, ImGuiInputTextState* ob
 
 static int IMSTB_TEXTEDIT_GETNEXTCHARINDEX_IMPL(ImGuiInputTextState* obj, int idx)
 {
-    if (idx >= obj->CurLenA)
-        return obj->CurLenA + 1;
+    if (idx >= obj->TextLen)
+        return obj->TextLen + 1;
     unsigned int c;
-    return idx + ImTextCharFromUtf8(&c, obj->TextA.Data + idx, obj->TextA.Data + obj->CurLenA);
+    return idx + ImTextCharFromUtf8(&c, obj->TextA.Data + idx, obj->TextA.Data + obj->TextLen);
 }
 
 static int IMSTB_TEXTEDIT_GETPREVCHARINDEX_IMPL(ImGuiInputTextState* obj, int idx)
@@ -3986,8 +3986,8 @@ static int is_word_boundary_from_right(ImGuiInputTextState* obj, int idx)
 
     const char* curr_p = obj->TextA.Data + idx;
     const char* prev_p = ImTextFindPreviousUtf8Codepoint(obj->TextA.Data, curr_p);
-    unsigned int curr_c; ImTextCharFromUtf8(&curr_c, curr_p, obj->TextA.Data + obj->CurLenA);
-    unsigned int prev_c; ImTextCharFromUtf8(&prev_c, prev_p, obj->TextA.Data + obj->CurLenA);
+    unsigned int curr_c; ImTextCharFromUtf8(&curr_c, curr_p, obj->TextA.Data + obj->TextLen);
+    unsigned int prev_c; ImTextCharFromUtf8(&prev_c, prev_p, obj->TextA.Data + obj->TextLen);
 
     bool prev_white = ImCharIsBlankW(prev_c);
     bool prev_separ = ImCharIsSeparatorW(prev_c);
@@ -4002,8 +4002,8 @@ static int is_word_boundary_from_left(ImGuiInputTextState* obj, int idx)
 
     const char* curr_p = obj->TextA.Data + idx;
     const char* prev_p = ImTextFindPreviousUtf8Codepoint(obj->TextA.Data, curr_p);
-    unsigned int prev_c; ImTextCharFromUtf8(&prev_c, curr_p, obj->TextA.Data + obj->CurLenA);
-    unsigned int curr_c; ImTextCharFromUtf8(&curr_c, prev_p, obj->TextA.Data + obj->CurLenA);
+    unsigned int prev_c; ImTextCharFromUtf8(&prev_c, curr_p, obj->TextA.Data + obj->TextLen);
+    unsigned int curr_c; ImTextCharFromUtf8(&curr_c, prev_p, obj->TextA.Data + obj->TextLen);
 
     bool prev_white = ImCharIsBlankW(prev_c);
     bool prev_separ = ImCharIsSeparatorW(prev_c);
@@ -4020,7 +4020,7 @@ static int  STB_TEXTEDIT_MOVEWORDLEFT_IMPL(ImGuiInputTextState* obj, int idx)
 }
 static int  STB_TEXTEDIT_MOVEWORDRIGHT_MAC(ImGuiInputTextState* obj, int idx)
 {
-    int len = obj->CurLenA;
+    int len = obj->TextLen;
     idx = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx);
     while (idx < len && !is_word_boundary_from_left(obj, idx))
         idx = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx);
@@ -4029,7 +4029,7 @@ static int  STB_TEXTEDIT_MOVEWORDRIGHT_MAC(ImGuiInputTextState* obj, int idx)
 static int  STB_TEXTEDIT_MOVEWORDRIGHT_WIN(ImGuiInputTextState* obj, int idx)
 {
     idx = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx);
-    int len = obj->CurLenA;
+    int len = obj->TextLen;
     while (idx < len && !is_word_boundary_from_right(obj, idx))
         idx = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx);
     return idx > len ? len : idx;
@@ -4043,7 +4043,7 @@ static void STB_TEXTEDIT_DELETECHARS(ImGuiInputTextState* obj, int pos, int n)
     char* dst = obj->TextA.Data + pos;
 
     obj->Edited = true;
-    obj->CurLenA -= n;
+    obj->TextLen -= n;
 
     // Offset remaining text (FIXME-OPT: Use memmove)
     const char* src = obj->TextA.Data + pos + n;
@@ -4055,10 +4055,10 @@ static void STB_TEXTEDIT_DELETECHARS(ImGuiInputTextState* obj, int pos, int n)
 static bool STB_TEXTEDIT_INSERTCHARS(ImGuiInputTextState* obj, int pos, const char* new_text, int new_text_len)
 {
     const bool is_resizable = (obj->Flags & ImGuiInputTextFlags_CallbackResize) != 0;
-    const int text_len = obj->CurLenA;
+    const int text_len = obj->TextLen;
     IM_ASSERT(pos <= text_len);
 
-    if (!is_resizable && (new_text_len + obj->CurLenA + 1 > obj->BufCapacityA))
+    if (!is_resizable && (new_text_len + obj->TextLen + 1 > obj->BufCapacity))
         return false;
 
     // Grow internal buffer if needed
@@ -4075,8 +4075,8 @@ static bool STB_TEXTEDIT_INSERTCHARS(ImGuiInputTextState* obj, int pos, const ch
     memcpy(text + pos, new_text, (size_t)new_text_len);
 
     obj->Edited = true;
-    obj->CurLenA += new_text_len;
-    obj->TextA[obj->CurLenA] = '\0';
+    obj->TextLen += new_text_len;
+    obj->TextA[obj->TextLen] = '\0';
 
     return true;
 }
@@ -4108,8 +4108,8 @@ static bool STB_TEXTEDIT_INSERTCHARS(ImGuiInputTextState* obj, int pos, const ch
 // the stb_textedit_paste() function creates two separate records, so we perform it manually. (FIXME: Report to nothings/stb?)
 static void stb_textedit_replace(ImGuiInputTextState* str, STB_TexteditState* state, const IMSTB_TEXTEDIT_CHARTYPE* text, int text_len)
 {
-    stb_text_makeundo_replace(str, state, 0, str->CurLenA, text_len);
-    ImStb::STB_TEXTEDIT_DELETECHARS(str, 0, str->CurLenA);
+    stb_text_makeundo_replace(str, state, 0, str->TextLen, text_len);
+    ImStb::STB_TEXTEDIT_DELETECHARS(str, 0, str->TextLen);
     state->cursor = state->select_start = state->select_end = 0;
     if (text_len <= 0)
         return;
@@ -4157,13 +4157,13 @@ void ImGuiInputTextState::OnCharPressed(unsigned int c)
 
 // Those functions are not inlined in imgui_internal.h, allowing us to hide ImStbTexteditState from that header.
 void ImGuiInputTextState::CursorAnimReset()                 { CursorAnim = -0.30f; } // After a user-input the cursor stays on for a while without blinking
-void ImGuiInputTextState::CursorClamp()                     { Stb->cursor = ImMin(Stb->cursor, CurLenA); Stb->select_start = ImMin(Stb->select_start, CurLenA); Stb->select_end = ImMin(Stb->select_end, CurLenA); }
+void ImGuiInputTextState::CursorClamp()                     { Stb->cursor = ImMin(Stb->cursor, TextLen); Stb->select_start = ImMin(Stb->select_start, TextLen); Stb->select_end = ImMin(Stb->select_end, TextLen); }
 bool ImGuiInputTextState::HasSelection() const              { return Stb->select_start != Stb->select_end; }
 void ImGuiInputTextState::ClearSelection()                  { Stb->select_start = Stb->select_end = Stb->cursor; }
 int  ImGuiInputTextState::GetCursorPos() const              { return Stb->cursor; }
 int  ImGuiInputTextState::GetSelectionStart() const         { return Stb->select_start; }
 int  ImGuiInputTextState::GetSelectionEnd() const           { return Stb->select_end; }
-void ImGuiInputTextState::SelectAll()                       { Stb->select_start = 0; Stb->cursor = Stb->select_end = CurLenA; Stb->has_preferred_x = 0; }
+void ImGuiInputTextState::SelectAll()                       { Stb->select_start = 0; Stb->cursor = Stb->select_end = TextLen; Stb->has_preferred_x = 0; }
 void ImGuiInputTextState::ReloadUserBufAndSelectAll()       { ReloadUserBuf = true; ReloadSelectionStart = 0; ReloadSelectionEnd = INT_MAX; }
 void ImGuiInputTextState::ReloadUserBufAndKeepSelection()   { ReloadUserBuf = true; ReloadSelectionStart = Stb->select_start; ReloadSelectionEnd = Stb->select_end; }
 void ImGuiInputTextState::ReloadUserBufAndMoveToEnd()       { ReloadUserBuf = true; ReloadSelectionStart = ReloadSelectionEnd = INT_MAX; }
@@ -4216,7 +4216,7 @@ void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, cons
         int new_buf_size = BufTextLen + ImClamp(new_text_len * 4, 32, ImMax(256, new_text_len)) + 1;
         edit_state->TextA.resize(new_buf_size + 1);
         Buf = edit_state->TextA.Data;
-        BufSize = edit_state->BufCapacityA = new_buf_size;
+        BufSize = edit_state->BufCapacity = new_buf_size;
     }
 
     if (BufTextLen != pos)
@@ -4380,8 +4380,8 @@ void ImGui::InputTextDeactivateHook(ImGuiID id)
     else
     {
         IM_ASSERT(state->TextA.Data != 0);
-        g.InputTextDeactivatedState.TextA.resize(state->CurLenA + 1);
-        memcpy(g.InputTextDeactivatedState.TextA.Data, state->TextA.Data, state->CurLenA + 1);
+        g.InputTextDeactivatedState.TextA.resize(state->TextLen + 1);
+        memcpy(g.InputTextDeactivatedState.TextA.Data, state->TextA.Data, state->TextLen + 1);
     }
 }
 
@@ -4521,21 +4521,21 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
         if (!init_reload_from_user_buf)
         {
             // Take a copy of the initial buffer value.
-            state->InitialTextA.resize(buf_len + 1);    // UTF-8. we use +1 to make sure that .Data is always pointing to at least an empty string.
-            memcpy(state->InitialTextA.Data, buf, buf_len + 1);
+            state->TextToRevertTo.resize(buf_len + 1);    // UTF-8. we use +1 to make sure that .Data is always pointing to at least an empty string.
+            memcpy(state->TextToRevertTo.Data, buf, buf_len + 1);
         }
 
         // Preserve cursor position and undo/redo stack if we come back to same widget
         // FIXME: Since we reworked this on 2022/06, may want to differentiate recycle_cursor vs recycle_undostate?
         bool recycle_state = (state->ID == id && !init_changed_specs && !init_reload_from_user_buf);
-        if (recycle_state && (state->CurLenA != buf_len || (strncmp(state->TextA.Data, buf, buf_len) != 0)))
+        if (recycle_state && (state->TextLen != buf_len || (strncmp(state->TextA.Data, buf, buf_len) != 0)))
             recycle_state = false;
 
         // Start edition
         state->ID = id;
         state->TextA.resize(buf_size + 1);          // we use +1 to make sure that .Data is always pointing to at least an empty string.
-        state->CurLenA = (int)strlen(buf);
-        memcpy(state->TextA.Data, buf, state->CurLenA + 1);
+        state->TextLen = (int)strlen(buf);
+        memcpy(state->TextA.Data, buf, state->TextLen + 1);
 
         if (recycle_state)
         {
@@ -4646,7 +4646,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
     {
         IM_ASSERT(state != NULL);
         state->Edited = false;
-        state->BufCapacityA = buf_size;
+        state->BufCapacity = buf_size;
         state->Flags = flags;
 
         // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.
@@ -4871,7 +4871,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
             if (g.PlatformIO.Platform_SetClipboardTextFn != NULL)
             {
                 const int ib = state->HasSelection() ? ImMin(state->Stb->select_start, state->Stb->select_end) : 0;
-                const int ie = state->HasSelection() ? ImMax(state->Stb->select_start, state->Stb->select_end) : state->CurLenA;
+                const int ie = state->HasSelection() ? ImMax(state->Stb->select_start, state->Stb->select_end) : state->TextLen;
 
                 char backup = state->TextA.Data[ie];
                 state->TextA.Data[ie] = 0; // A bit of a hack since SetClipboardText only takes null terminated strings
@@ -4936,15 +4936,15 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                 IMSTB_TEXTEDIT_CHARTYPE empty_string;
                 stb_textedit_replace(state, state->Stb, &empty_string, 0);
             }
-            else if (strcmp(buf, state->InitialTextA.Data) != 0)
+            else if (strcmp(buf, state->TextToRevertTo.Data) != 0)
             {
-                apply_new_text = state->InitialTextA.Data;
-                apply_new_text_length = state->InitialTextA.Size - 1;
+                apply_new_text = state->TextToRevertTo.Data;
+                apply_new_text_length = state->TextToRevertTo.Size - 1;
 
                 // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
                 // Push records into the undo stack so we can CTRL+Z the revert operation itself
                 value_changed = true;
-                stb_textedit_replace(state, state->Stb, state->InitialTextA.Data, state->InitialTextA.Size - 1);
+                stb_textedit_replace(state, state->Stb, state->TextToRevertTo.Data, state->TextToRevertTo.Size - 1);
             }
         }
 
@@ -5003,14 +5003,14 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                     callback_data.UserData = callback_user_data;
 
                     // FIXME-OPT: Undo stack reconcile needs a backup of the data until we rework API, see #7925
-                    state->CallbackTextBackup.resize(state->CurLenA + 1);
-                    memcpy(state->CallbackTextBackup.Data, state->TextA.Data, state->CurLenA + 1);
+                    state->CallbackTextBackup.resize(state->TextLen + 1);
+                    memcpy(state->CallbackTextBackup.Data, state->TextA.Data, state->TextLen + 1);
 
                     char* callback_buf = is_readonly ? buf : state->TextA.Data;
                     callback_data.EventKey = event_key;
                     callback_data.Buf = callback_buf;
-                    callback_data.BufTextLen = state->CurLenA;
-                    callback_data.BufSize = state->BufCapacityA;
+                    callback_data.BufTextLen = state->TextLen;
+                    callback_data.BufSize = state->BufCapacity;
                     callback_data.BufDirty = false;
 
                     const int utf8_cursor_pos = callback_data.CursorPos = state->Stb->cursor;
@@ -5023,7 +5023,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                     // Read back what user may have modified
                     callback_buf = is_readonly ? buf : state->TextA.Data; // Pointer may have been invalidated by a resize callback
                     IM_ASSERT(callback_data.Buf == callback_buf);         // Invalid to modify those fields
-                    IM_ASSERT(callback_data.BufSize == state->BufCapacityA);
+                    IM_ASSERT(callback_data.BufSize == state->BufCapacity);
                     IM_ASSERT(callback_data.Flags == flags);
                     const bool buf_dirty = callback_data.BufDirty;
                     if (callback_data.CursorPos != utf8_cursor_pos || buf_dirty)            { state->Stb->cursor = callback_data.CursorPos; state->CursorFollow = true; }
@@ -5034,7 +5034,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                         // Callback may update buffer and thus set buf_dirty even in read-only mode.
                         IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
                         InputTextReconcileUndoStateAfterUserCallback(state, callback_data.Buf, callback_data.BufTextLen); // FIXME: Move the rest of this block inside function and rename to InputTextReconcileStateAfterUserCallback() ?
-                        state->CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
+                        state->TextLen = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
                         state->CursorAnimReset();
                     }
                 }
@@ -5044,7 +5044,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
             if (!is_readonly && strcmp(state->TextA.Data, buf) != 0)
             {
                 apply_new_text = state->TextA.Data;
-                apply_new_text_length = state->CurLenA;
+                apply_new_text_length = state->TextLen;
                 value_changed = true;
             }
         }
@@ -5128,7 +5128,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
     {
         IM_ASSERT(state != NULL);
         if (!is_displaying_hint)
-            buf_display_end = buf_display + state->CurLenA;
+            buf_display_end = buf_display + state->TextLen;
 
         // Render text (with cursor and selection)
         // This is going to be messy. We need to:
@@ -5138,7 +5138,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
         // 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 char* text_begin = state->TextA.Data;
-        const char* text_end = text_begin + state->CurLenA;
+        const char* text_end = text_begin + state->TextLen;
         ImVec2 cursor_offset, select_start_offset;
 
         {
@@ -5280,7 +5280,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
         if (is_multiline)
             text_size = ImVec2(inner_size.x, InputTextCalcTextLenAndLineCount(buf_display, &buf_display_end) * g.FontSize); // We don't need width
         else if (!is_displaying_hint && g.ActiveId == id)
-            buf_display_end = buf_display + state->CurLenA;
+            buf_display_end = buf_display + state->TextLen;
         else if (!is_displaying_hint)
             buf_display_end = buf_display + strlen(buf_display);
 
@@ -5341,8 +5341,8 @@ void ImGui::DebugNodeInputTextState(ImGuiInputTextState* state)
     ImStb::StbUndoState* undo_state = &stb_state->undostate;
     Text("ID: 0x%08X, ActiveID: 0x%08X", state->ID, g.ActiveId);
     DebugLocateItemOnHover(state->ID);
-    Text("CurLenA: %d, Cursor: %d, Selection: %d..%d", state->CurLenA, stb_state->cursor, stb_state->select_start, stb_state->select_end);
-    Text("BufCapacityA: %d", state->BufCapacityA);
+    Text("CurLenA: %d, Cursor: %d, Selection: %d..%d", state->TextLen, stb_state->cursor, stb_state->select_start, stb_state->select_end);
+    Text("BufCapacityA: %d", state->BufCapacity);
     Text("(Internal Buffer: TextA Size: %d, Capacity: %d)", state->TextA.Size, state->TextA.Capacity);
     Text("has_preferred_x: %d (%.2f)", stb_state->has_preferred_x, stb_state->preferred_x);
     Text("undo_point: %d, redo_point: %d, undo_char_point: %d, redo_char_point: %d", undo_state->undo_point, undo_state->redo_point, undo_state->undo_char_point, undo_state->redo_char_point);