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SDL_SetWindowTitle() should never set a NULL pointer for the title string.

Browse Source 
Various backends reacted differently (or not at all) in the presence of a
NULL pointer. This simplifies things.

Fixes Bugzilla #2902.
This commit is contained in:
Ryan C. Gordon 2015-04-08 02:00:14 -04:00
parent 1339ce71f6
commit 6e53bc9b10
5 changed files with 29 additions and 45 deletions
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7
src/video/SDL_video.c
View File

@ -1502,11 +1502,8 @@ SDL_SetWindowTitle(SDL_Window * window, const char *title)
return;
}
SDL_free(window->title);
if (title && *title) {
window->title = SDL_strdup(title);
} else {
window->title = NULL;
}
window->title = SDL_strdup(title ? title : "");
if (_this->SetWindowTitle) {
_this->SetWindowTitle(_this, window);

9
src/video/cocoa/SDL_cocoawindow.m
View File

@ -1189,16 +1189,9 @@ Cocoa_SetWindowTitle(_THIS, SDL_Window * window)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSWindow *nswindow = ((SDL_WindowData *) window->driverdata)->nswindow;
NSString *string;
if(window->title) {
string = [[NSString alloc] initWithUTF8String:window->title];
} else {
string = [[NSString alloc] init];
}
NSString *string = [[NSString alloc] initWithUTF8String:window->title];
[nswindow setTitle:string];
[string release];
[pool release];
}

2
src/video/directfb/SDL_DirectFB_WM.c
View File

@ -161,7 +161,7 @@ DirectFB_WM_RedrawLayout(_THIS, SDL_Window * window)
y, w - 2 * d);
/* Caption */
if (window->title) {
if (*window->title) {
s->SetColor(s, COLOR_EXPAND(t->font_color));
DrawCraption(_this, s, (x - w) / 2, t->top_size + d, window->title);
}

10
src/video/windows/SDL_windowswindow.c
View File

@ -371,14 +371,8 @@ void
WIN_SetWindowTitle(_THIS, SDL_Window * window)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
LPTSTR title;
if (window->title) {
title = WIN_UTF8ToString(window->title);
} else {
title = NULL;
}
SetWindowText(hwnd, title ? title : TEXT(""));
LPTSTR title = WIN_UTF8ToString(window->title);
SetWindowText(hwnd, title);
SDL_free(title);
}

12
src/video/x11/SDL_x11window.c
View File

@ -658,20 +658,21 @@ X11_SetWindowTitle(_THIS, SDL_Window * window)
Display *display = data->videodata->display;
XTextProperty titleprop, iconprop;
Status status;
const char *title = window->title;
const char *title = window->title ? window->title : "";
const char *icon = NULL;
char *title_locale = NULL;
#ifdef X_HAVE_UTF8_STRING
Atom _NET_WM_NAME = data->videodata->_NET_WM_NAME;
Atom _NET_WM_ICON_NAME = data->videodata->_NET_WM_ICON_NAME;
#endif
if (title != NULL) {
char *title_locale = SDL_iconv_utf8_locale(title);
title_locale = SDL_iconv_utf8_locale(title);
if (!title_locale) {
SDL_OutOfMemory();
return;
}
status = X11_XStringListToTextProperty(&title_locale, 1, &titleprop);
SDL_free(title_locale);
if (status) {
@ -680,8 +681,7 @@ X11_SetWindowTitle(_THIS, SDL_Window * window)
}
#ifdef X_HAVE_UTF8_STRING
if (SDL_X11_HAVE_UTF8) {
status =
X11_Xutf8TextListToTextProperty(display, (char **) &title, 1,
status = X11_Xutf8TextListToTextProperty(display, (char **) &title, 1,
XUTF8StringStyle, &titleprop);
if (status == Success) {
X11_XSetTextProperty(display, data->xwindow, &titleprop,
@ -690,7 +690,7 @@ X11_SetWindowTitle(_THIS, SDL_Window * window)
}
}
#endif
}
if (icon != NULL) {
char *icon_locale = SDL_iconv_utf8_locale(icon);
if (!icon_locale) {