src/video/cocoa/SDL_cocoamessagebox.m
author Manuel Alfayate Corchete
Sun, 17 Jan 2021 21:33:51 +0100
changeset 14743 c3b1b429b80b
parent 14640 b2b3343a310d
permissions -rw-r--r--
[KMS/DRM] Fix for bug #5468: corruption on dynamic cursor changing caused by wrong buffer size.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #if SDL_VIDEO_DRIVER_COCOA
    24 
    25 #include "SDL_events.h"
    26 #include "SDL_timer.h"
    27 #include "SDL_messagebox.h"
    28 #include "SDL_cocoavideo.h"
    29 
    30 @interface SDLMessageBoxPresenter : NSObject {
    31 @public
    32     NSInteger clicked;
    33     NSWindow *nswindow;
    34 }
    35 - (id) initWithParentWindow:(SDL_Window *)window;
    36 - (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo;
    37 @end
    38 
    39 @implementation SDLMessageBoxPresenter
    40 - (id) initWithParentWindow:(SDL_Window *)window
    41 {
    42     self = [super init];
    43     if (self) {
    44         clicked = -1;
    45 
    46         /* Retain the NSWindow because we'll show the alert later on the main thread */
    47         if (window) {
    48             nswindow = [((SDL_WindowData *) window->driverdata)->nswindow retain];
    49         } else {
    50             nswindow = NULL;
    51         }
    52     }
    53 
    54     return self;
    55 }
    56 
    57 - (void)showAlert:(NSAlert*)alert
    58 {
    59     if (nswindow) {
    60 #ifdef MAC_OS_X_VERSION_10_9
    61         if ([alert respondsToSelector:@selector(beginSheetModalForWindow:completionHandler:)]) {
    62             [alert beginSheetModalForWindow:nswindow completionHandler:^(NSModalResponse returnCode) {
    63                 clicked = returnCode;
    64             }];
    65         } else
    66 #endif
    67         {
    68 #if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
    69             [alert beginSheetModalForWindow:nswindow modalDelegate:self didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:) contextInfo:nil];
    70 #endif
    71         }
    72 
    73         while (clicked < 0) {
    74             SDL_PumpEvents();
    75             SDL_Delay(100);
    76         }
    77 
    78         [nswindow release];
    79     } else {
    80         clicked = [alert runModal];
    81     }
    82 }
    83 
    84 - (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo
    85 {
    86     clicked = returnCode;
    87 }
    88 
    89 @end
    90 
    91 
    92 /* Display a Cocoa message box */
    93 int
    94 Cocoa_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
    95 { @autoreleasepool
    96 {
    97     Cocoa_RegisterApp();
    98 
    99     NSAlert* alert = [[[NSAlert alloc] init] autorelease];
   100 
   101     if (messageboxdata->flags & SDL_MESSAGEBOX_ERROR) {
   102         [alert setAlertStyle:NSAlertStyleCritical];
   103     } else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) {
   104         [alert setAlertStyle:NSAlertStyleWarning];
   105     } else {
   106         [alert setAlertStyle:NSAlertStyleInformational];
   107     }
   108 
   109     [alert setMessageText:[NSString stringWithUTF8String:messageboxdata->title]];
   110     [alert setInformativeText:[NSString stringWithUTF8String:messageboxdata->message]];
   111 
   112     const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
   113     int i;
   114     for (i = 0; i < messageboxdata->numbuttons; ++i) {
   115         const SDL_MessageBoxButtonData *sdlButton;
   116         NSButton *button;
   117 
   118         if (messageboxdata->flags & SDL_MESSAGEBOX_BUTTONS_RIGHT_TO_LEFT) {
   119             sdlButton = &messageboxdata->buttons[messageboxdata->numbuttons - 1 - i];
   120         } else {
   121             sdlButton = &messageboxdata->buttons[i];
   122         }
   123 
   124         button = [alert addButtonWithTitle:[NSString stringWithUTF8String:sdlButton->text]];
   125         if (sdlButton->flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT) {
   126             [button setKeyEquivalent:@"\r"];
   127         } else if (sdlButton->flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) {
   128             [button setKeyEquivalent:@"\033"];
   129         } else {
   130             [button setKeyEquivalent:@""];
   131         }
   132     }
   133 
   134     SDLMessageBoxPresenter* presenter = [[[SDLMessageBoxPresenter alloc] initWithParentWindow:messageboxdata->window] autorelease];
   135 
   136     [presenter performSelectorOnMainThread:@selector(showAlert:)
   137                                 withObject:alert
   138                              waitUntilDone:YES];
   139 
   140     int returnValue = 0;
   141     NSInteger clicked = presenter->clicked;
   142     if (clicked >= NSAlertFirstButtonReturn) {
   143         clicked -= NSAlertFirstButtonReturn;
   144         if (messageboxdata->flags & SDL_MESSAGEBOX_BUTTONS_RIGHT_TO_LEFT) {
   145             clicked = messageboxdata->numbuttons - 1 - clicked;
   146         }
   147         *buttonid = buttons[clicked].buttonid;
   148     } else {
   149         returnValue = SDL_SetError("Did not get a valid `clicked button' id: %ld", (long)clicked);
   150     }
   151 
   152     return returnValue;
   153 }}
   154 
   155 #endif /* SDL_VIDEO_DRIVER_COCOA */
   156 
   157 /* vi: set ts=4 sw=4 expandtab: */