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STB_TEXTEDIT_memmove

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This commit is contained in:
Sean Barrett 2015-04-15 02:52:25 -07:00
parent d5251d527b
commit 9487a59c14
1 changed files with 12 additions and 9 deletions
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21
stb_textedit.h
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@ -1,4 +1,4 @@
// stb_textedit.h - v1.5 - public domain - Sean Barrett
// stb_textedit.h - v1.6 - public domain - Sean Barrett
// Development of this library was sponsored by RAD Game Tools
//
// This C header file implements the guts of a multi-line text-editing
@ -24,12 +24,14 @@
//
// DEPENDENCIES
//
// Uses the C runtime function 'memmove'. Uses no other functions.
// Performs no runtime allocations.
// Uses the C runtime function 'memmove', which you can override
// by defining STB_TEXTEDIT_memmove before the implementation.
// Uses no other functions. Performs no runtime allocations.
//
//
// VERSION HISTORY
//
// 1.6 (2015-04-15) allow STB_TEXTEDIT_memmove
// 1.5 (2014-09-10) add support for secondary keys for OS X
// 1.4 (2014-08-17) fix signed/unsigned warnings
// 1.3 (2014-06-19) fix mouse clicking to round to nearest char boundary
@ -45,6 +47,7 @@
// Ulf Winklemann: move-by-word in 1.1
// Scott Graham: mouse selection bugfix in 1.3
// Fabian Giesen: secondary key inputs in 1.5
// Martins Mozeiko: STB_TEXTEDIT_memmove
//
// USAGE
//
@ -358,9 +361,9 @@ typedef struct
// included just the "header" portion
#ifdef STB_TEXTEDIT_IMPLEMENTATION
#ifndef STBTE_memmove
#ifndef STB_TEXTEDIT_memmove
#include <string.h>
#define STBTE_memmove memmove
#define STB_TEXTEDIT_memmove memmove
#endif
@ -1041,13 +1044,13 @@ static void stb_textedit_discard_undo(StbUndoState *state)
int n = state->undo_rec[0].insert_length, i;
// delete n characters from all other records
state->undo_char_point = state->undo_char_point - (short) n; // vsnet05
STBTE_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE)));
STB_TEXTEDIT_memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE)));
for (i=0; i < state->undo_point; ++i)
if (state->undo_rec[i].char_storage >= 0)
state->undo_rec[i].char_storage = state->undo_rec[i].char_storage - (short) n; // vsnet05 // @OPTIMIZE: get rid of char_storage and infer it
}
--state->undo_point;
STBTE_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
STB_TEXTEDIT_memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
}
}
@ -1065,13 +1068,13 @@ static void stb_textedit_discard_redo(StbUndoState *state)
int n = state->undo_rec[k].insert_length, i;
// delete n characters from all other records
state->redo_char_point = state->redo_char_point + (short) n; // vsnet05
STBTE_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE)));
STB_TEXTEDIT_memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE)));
for (i=state->redo_point; i < k; ++i)
if (state->undo_rec[i].char_storage >= 0)
state->undo_rec[i].char_storage = state->undo_rec[i].char_storage + (short) n; // vsnet05
}
++state->redo_point;
STBTE_memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0])));
STB_TEXTEDIT_memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0])));
}
}