SDL  2.0
SDL_winrtmessagebox.cpp
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2020 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_WINRT
24 
25 extern "C" {
26 #include "SDL_messagebox.h"
27 #include "../../core/windows/SDL_windows.h"
28 }
29 
30 #include "SDL_winrtevents_c.h"
31 
32 #include <windows.ui.popups.h>
33 using namespace Platform;
34 using namespace Windows::Foundation;
35 using namespace Windows::UI::Popups;
36 
37 static String ^
38 WINRT_UTF8ToPlatformString(const char * str)
39 {
40  wchar_t * wstr = WIN_UTF8ToString(str);
41  String ^ rtstr = ref new String(wstr);
42  SDL_free(wstr);
43  return rtstr;
44 }
45 
46 extern "C" int
47 WINRT_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
48 {
49 #if (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP) && (NTDDI_VERSION == NTDDI_WIN8)
50  /* Sadly, Windows Phone 8 doesn't include the MessageDialog class that
51  * Windows 8.x/RT does, even though MSDN's reference documentation for
52  * Windows Phone 8 mentions it.
53  *
54  * The .NET runtime on Windows Phone 8 does, however, include a
55  * MessageBox class. Perhaps this could be called, somehow?
56  */
57  return SDL_SetError("SDL_messagebox support is not available for Windows Phone 8.0");
58 #else
60 
61 #if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
62  const int maxbuttons = 2;
63  const char * platform = "Windows Phone 8.1+";
64 #else
65  const int maxbuttons = 3;
66  const char * platform = "Windows 8.x";
67 #endif
68 
69  if (messageboxdata->numbuttons > maxbuttons) {
70  return SDL_SetError("WinRT's MessageDialog only supports %d buttons, at most, on %s. %d were requested.",
71  maxbuttons, platform, messageboxdata->numbuttons);
72  }
73 
74  /* Build a MessageDialog object and its buttons */
75  MessageDialog ^ dialog = ref new MessageDialog(WINRT_UTF8ToPlatformString(messageboxdata->message));
76  dialog->Title = WINRT_UTF8ToPlatformString(messageboxdata->title);
77  for (int i = 0; i < messageboxdata->numbuttons; ++i) {
78  const SDL_MessageBoxButtonData *sdlButton;
79  if (messageboxdata->flags & SDL_MESSAGEBOX_BUTTONS_RIGHT_TO_LEFT) {
80  sdlButton = &messageboxdata->buttons[messageboxdata->numbuttons - 1 - i];
81  } else {
82  sdlButton = &messageboxdata->buttons[i];
83  }
84  UICommand ^ button = ref new UICommand(WINRT_UTF8ToPlatformString(sdlButton->text));
85  button->Id = safe_cast<IntPtr>((int)(sdlButton - messageboxdata->buttons));
86  dialog->Commands->Append(button);
88  dialog->CancelCommandIndex = i;
89  }
91  dialog->DefaultCommandIndex = i;
92  }
93  }
94 
95  /* Display the MessageDialog, then wait for it to be closed */
96  /* TODO, WinRT: Find a way to redraw MessageDialog instances if a GPU device-reset occurs during the following event-loop */
97  auto operation = dialog->ShowAsync();
98  while (operation->Status == Windows::Foundation::AsyncStatus::Started) {
100  }
101 
102  /* Retrieve results from the MessageDialog and process them accordingly */
103  if (operation->Status != Windows::Foundation::AsyncStatus::Completed) {
104  return SDL_SetError("An unknown error occurred in displaying the WinRT MessageDialog");
105  }
106  if (buttonid) {
107  IntPtr results = safe_cast<IntPtr>((int)(operation->GetResults()->Id));
108  int clicked_index = results.ToInt32();
109  *buttonid = messageboxdata->buttons[clicked_index].buttonid;
110  }
111  return 0;
112 #endif /* if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP / else */
113 }
114 
115 #endif /* SDL_VIDEO_DRIVER_WINRT */
116 
117 /* vi: set ts=4 sw=4 expandtab: */
118 
SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT
@ SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT
Definition: SDL_messagebox.h:52
WIN_UTF8ToString
#define WIN_UTF8ToString(S)
Definition: SDL_windows.h:47
SDL_MessageBoxData::title
const char * title
Definition: SDL_messagebox.h:98
SDL_messagebox.h
SDL_MessageBoxButtonData::flags
Uint32 flags
Definition: SDL_messagebox.h:60
SDL_MessageBoxData::message
const char * message
Definition: SDL_messagebox.h:99
_this
static SDL_VideoDevice * _this
Definition: SDL_video.c:121
SDL_MESSAGEBOX_BUTTONS_RIGHT_TO_LEFT
@ SDL_MESSAGEBOX_BUTTONS_RIGHT_TO_LEFT
Definition: SDL_messagebox.h:43
WINRT_PumpEvents
void WINRT_PumpEvents(_THIS)
ref
GLenum GLint ref
Definition: SDL_opengl_glext.h:660
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
SDL_MessageBoxData::flags
Uint32 flags
Definition: SDL_messagebox.h:96
SDL_MessageBoxData
MessageBox structure containing title, text, window, etc.
Definition: SDL_messagebox.h:95
SDL_MessageBoxButtonData
Individual button data.
Definition: SDL_messagebox.h:59
SDL_MessageBoxButtonData::buttonid
int buttonid
Definition: SDL_messagebox.h:61
SDL_VideoDevice
Definition: SDL_sysvideo.h:150
SDL_MessageBoxData::buttons
const SDL_MessageBoxButtonData * buttons
Definition: SDL_messagebox.h:102
SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT
@ SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT
Definition: SDL_messagebox.h:51
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_MessageBoxButtonData::text
const char * text
Definition: SDL_messagebox.h:62
SDL_winrtevents_c.h
SDL_GetVideoDevice
SDL_VideoDevice * SDL_GetVideoDevice(void)
Definition: SDL_video.c:586
button
SDL_Texture * button
Definition: testgamecontroller.c:67
SDL_MessageBoxData::numbuttons
int numbuttons
Definition: SDL_messagebox.h:101
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50