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Fix candidate list size for Windows IME 

Adjust candidate count so list is not draw bigger that needed. This also fix potential uninitialised read of variable `candsize[i]` if `vertical` is false.
This commit is contained in:
Mathieu Eyraud 2022-08-28 13:02:57 +02:00 committed by Sam Lantinga
parent 644a4e5b31
commit b8af865f18
1 changed files with 4 additions and 4 deletions
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8
src/video/windows/SDL_windowskeyboard.c
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@ -1559,7 +1559,7 @@ IME_RenderCandidateList(SDL_VideoData *videodata, HDC hdc)
SIZE candsizes[MAX_CANDLIST];
SIZE maxcandsize = {0};
HBITMAP hbm = NULL;
const int candcount = SDL_min(SDL_min(MAX_CANDLIST, videodata->ime_candcount), videodata->ime_candpgsize);
int candcount = SDL_min(SDL_min(MAX_CANDLIST, videodata->ime_candcount), videodata->ime_candpgsize);
SDL_bool vertical = videodata->ime_candvertical;
const int listborder = 1;
@ -1591,8 +1591,10 @@ IME_RenderCandidateList(SDL_VideoData *videodata, HDC hdc)
for (i = 0; i < candcount; ++i) {
const WCHAR *s = &videodata->ime_candidates[i * MAX_CANDLENGTH];
if (!*s)
if (!*s) {
candcount = i;
break;
}
GetTextExtentPoint32W(hdc, s, (int)SDL_wcslen(s), &candsizes[i]);
maxcandsize.cx = SDL_max(maxcandsize.cx, candsizes[i].cx);
@ -1654,8 +1656,6 @@ IME_RenderCandidateList(SDL_VideoData *videodata, HDC hdc)
for (i = 0; i < candcount; ++i) {
const WCHAR *s = &videodata->ime_candidates[i * MAX_CANDLENGTH];
int left, top, right, bottom;
if (!*s)
break;
if (vertical) {
left = listborder + listpadding + candmargin;