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stb_textedit: subsequent comments to match ocornut/stb branch. (#8635, #7925)

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ocornut
2025-05-14 14:05:19 +02:00
parent 1387d356aa
commit 4e487cfa99
1 changed files with 15 additions and 4 deletions
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19
imstb_textedit.h
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@@ -141,6 +141,7 @@
// with previous char)
// STB_TEXTEDIT_KEYTOTEXT(k) maps a keyboard input to an insertable character
// (return type is int, -1 means not valid to insert)
// (not supported if you want to use UTF-8, see below)
// STB_TEXTEDIT_GETCHAR(obj,i) returns the i'th character of obj, 0-based
// STB_TEXTEDIT_NEWLINE the character returned by _GETCHAR() we recognize
// as manually wordwrapping for end-of-line positioning
@@ -178,6 +179,13 @@
// STB_TEXTEDIT_K_TEXTSTART2 secondary keyboard input to move cursor to start of text
// STB_TEXTEDIT_K_TEXTEND2 secondary keyboard input to move cursor to end of text
//
// To support UTF-8:
//
// STB_TEXTEDIT_GETPREVCHARINDEX returns index of previous character
// STB_TEXTEDIT_GETNEXTCHARINDEX returns index of next character
// Do NOT define STB_TEXTEDIT_KEYTOTEXT.
// Instead, call stb_textedit_text() directly for text contents.
//
// Keyboard input must be encoded as a single integer value; e.g. a character code
// and some bitflags that represent shift states. to simplify the interface, SHIFT must
// be a bitflag, so we can test the shifted state of cursor movements to allow selection,
@@ -250,8 +258,10 @@
// if the STB_TEXTEDIT_KEYTOTEXT function is defined, selected keys are
// transformed into text and stb_textedit_text() is automatically called.
//
// text: [DEAR IMGUI] added 2024-09
// call this to text inputs sent to the textfield.
// text: (added 2025)
// call this to directly send text input the textfield, which is required
// for UTF-8 support, because stb_textedit_key() + STB_TEXTEDIT_KEYTOTEXT()
// cannot infer text length.
//
//
// When rendering, you can read the cursor position and selection state from
@@ -738,6 +748,7 @@ static int stb_textedit_paste_internal(IMSTB_TEXTEDIT_STRING *str, STB_TexteditS
#define STB_TEXTEDIT_KEYTYPE int
#endif
// API key: process text input
// [DEAR IMGUI] Added stb_textedit_text(), extracted out and called by stb_textedit_key() for backward compatibility.
static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* state, const IMSTB_TEXTEDIT_CHARTYPE* text, int text_len)
{
@@ -752,8 +763,7 @@ static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* sta
state->cursor += text_len;
state->has_preferred_x = 0;
}
}
else {
} else {
stb_textedit_delete_selection(str, state); // implicitly clamps
if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
stb_text_makeundo_insert(state, state->cursor, text_len);
@@ -770,6 +780,7 @@ retry:
switch (key) {
default: {
#ifdef STB_TEXTEDIT_KEYTOTEXT
// This is not suitable for UTF-8 support.
int c = STB_TEXTEDIT_KEYTOTEXT(key);
if (c > 0) {
IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE)c;