*initHEADmaster

1 files changed, 224 insertions, 0 deletions

diff --git a/source/3rd-party/SDL2/src/video/winrt/SDL_winrtmouse.cpp b/source/3rd-party/SDL2/src/video/winrt/SDL_winrtmouse.cpp
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index 0000000..093a1b9
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+++ b/source/3rd-party/SDL2/src/video/winrt/SDL_winrtmouse.cpp
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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WINRT
+
+/*
+ * Windows includes:
+ */
+#include <Windows.h>
+#include <windows.ui.core.h>
+using namespace Windows::UI::Core;
+using Windows::UI::Core::CoreCursor;
+
+/*
+ * SDL includes:
+ */
+extern "C" {
+#include "SDL_assert.h"
+#include "../../events/SDL_mouse_c.h"
+#include "../../events/SDL_touch_c.h"
+#include "../SDL_sysvideo.h"
+#include "SDL_events.h"
+#include "SDL_log.h"
+}
+
+#include "../../core/winrt/SDL_winrtapp_direct3d.h"
+#include "SDL_winrtvideo_cpp.h"
+#include "SDL_winrtmouse_c.h"
+
+
+extern "C" SDL_bool WINRT_UsingRelativeMouseMode = SDL_FALSE;
+
+
+static SDL_Cursor *
+WINRT_CreateSystemCursor(SDL_SystemCursor id)
+{
+    SDL_Cursor *cursor;
+    CoreCursorType cursorType = CoreCursorType::Arrow;
+
+    switch(id)
+    {
+    default:
+        SDL_assert(0);
+        return NULL;
+    case SDL_SYSTEM_CURSOR_ARROW:     cursorType = CoreCursorType::Arrow; break;
+    case SDL_SYSTEM_CURSOR_IBEAM:     cursorType = CoreCursorType::IBeam; break;
+    case SDL_SYSTEM_CURSOR_WAIT:      cursorType = CoreCursorType::Wait; break;
+    case SDL_SYSTEM_CURSOR_CROSSHAIR: cursorType = CoreCursorType::Cross; break;
+    case SDL_SYSTEM_CURSOR_WAITARROW: cursorType = CoreCursorType::Wait; break;
+    case SDL_SYSTEM_CURSOR_SIZENWSE:  cursorType = CoreCursorType::SizeNorthwestSoutheast; break;
+    case SDL_SYSTEM_CURSOR_SIZENESW:  cursorType = CoreCursorType::SizeNortheastSouthwest; break;
+    case SDL_SYSTEM_CURSOR_SIZEWE:    cursorType = CoreCursorType::SizeWestEast; break;
+    case SDL_SYSTEM_CURSOR_SIZENS:    cursorType = CoreCursorType::SizeNorthSouth; break;
+    case SDL_SYSTEM_CURSOR_SIZEALL:   cursorType = CoreCursorType::SizeAll; break;
+    case SDL_SYSTEM_CURSOR_NO:        cursorType = CoreCursorType::UniversalNo; break;
+    case SDL_SYSTEM_CURSOR_HAND:      cursorType = CoreCursorType::Hand; break;
+    }
+
+    cursor = (SDL_Cursor *) SDL_calloc(1, sizeof(*cursor));
+    if (cursor) {
+        /* Create a pointer to a COM reference to a cursor.  The extra
+           pointer is used (on top of the COM reference) to allow the cursor
+           to be referenced by the SDL_cursor's driverdata field, which is
+           a void pointer.
+        */
+        CoreCursor ^* theCursor = new CoreCursor^(nullptr);
+        *theCursor = ref new CoreCursor(cursorType, 0);
+        cursor->driverdata = (void *) theCursor;
+    } else {
+        SDL_OutOfMemory();
+    }
+
+    return cursor;
+}
+
+static SDL_Cursor *
+WINRT_CreateDefaultCursor()
+{
+    return WINRT_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
+}
+
+static void
+WINRT_FreeCursor(SDL_Cursor * cursor)
+{
+    if (cursor->driverdata) {
+        CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
+        *theCursor = nullptr;       // Release the COM reference to the CoreCursor
+        delete theCursor;           // Delete the pointer to the COM reference
+    }
+    SDL_free(cursor);
+}
+
+static int
+WINRT_ShowCursor(SDL_Cursor * cursor)
+{
+    // TODO, WinRT, XAML: make WINRT_ShowCursor work when XAML support is enabled.
+    if ( ! CoreWindow::GetForCurrentThread()) {
+        return 0;
+    }
+
+    CoreWindow ^ coreWindow = CoreWindow::GetForCurrentThread();
+    if (cursor) {
+        CoreCursor ^* theCursor = (CoreCursor ^*) cursor->driverdata;
+        coreWindow->PointerCursor = *theCursor;
+    } else {
+        // HACK ALERT: TL;DR - Hiding the cursor in WinRT/UWP apps is weird, and
+        //   a Win32-style cursor resource file must be directly included in apps,
+        //   otherwise hiding the cursor will cause mouse-motion data to never be
+        //   received.
+        //
+        // Here's the lengthy explanation:
+        //
+        // There are two ways to hide a cursor in WinRT/UWP apps.
+        // Both involve setting the WinRT CoreWindow's (which is somewhat analogous
+        // to a Win32 HWND) 'PointerCursor' property.
+        //
+        // The first way to hide a cursor sets PointerCursor to nullptr.  This
+        // is, arguably, the easiest to implement for an app.  It does have an
+        // unfortunate side-effect: it'll prevent mouse-motion events from being
+        // sent to the app (via CoreWindow).
+        //
+        // The second way to hide a cursor sets PointerCursor to a transparent
+        // cursor.  This allows mouse-motion events to be sent to the app, but is
+        // more difficult to set up, as:
+        //   1. WinRT/UWP, while providing a few stock cursors, does not provide
+        //      a completely transparent cursor.
+        //   2. WinRT/UWP allows apps to provide custom-built cursors, but *ONLY*
+        //      if they are linked directly inside the app, via Win32-style
+        //      cursor resource files.  APIs to create cursors at runtime are
+        //      not provided to apps, and attempting to link-to or use Win32
+        //      cursor-creation APIs could cause an app to fail Windows Store
+        //      certification.
+        //
+        // SDL can use either means of hiding the cursor.  It provides a Win32-style
+        // set of cursor resource files in its source distribution, inside
+        // src/main/winrt/.  If those files are linked to an SDL-for-WinRT/UWP app
+        // (by including them in a MSVC project, for example), SDL will attempt to
+        // use those, if and when the cursor is hidden via SDL APIs.  If those
+        // files are not linked in, SDL will attempt to hide the cursor via the
+        // 'set PointerCursor to nullptr' means (which, if you recall, causes
+        // mouse-motion data to NOT be sent to the app!).
+        //
+        // Tech notes:
+        //  - SDL's blank cursor resource uses a resource ID of 5000.
+        //  - SDL's cursor resources consist of the following two files:
+        //     - src/main/winrt/SDL2-WinRTResource_BlankCursor.cur -- cursor pixel data
+        //     - src/main/winrt/SDL2-WinRTResources.rc             -- declares the cursor resource, and its ID (of 5000)
+        //
+
+        const unsigned int win32CursorResourceID = 5000;  
+        CoreCursor ^ blankCursor = ref new CoreCursor(CoreCursorType::Custom, win32CursorResourceID);
+
+        // Set 'PointerCursor' to 'blankCursor' in a way that shouldn't throw
+        // an exception if the app hasn't loaded that resource.
+        ABI::Windows::UI::Core::ICoreCursor * iblankCursor = reinterpret_cast<ABI::Windows::UI::Core::ICoreCursor *>(blankCursor);
+        ABI::Windows::UI::Core::ICoreWindow * icoreWindow = reinterpret_cast<ABI::Windows::UI::Core::ICoreWindow *>(coreWindow);
+        HRESULT hr = icoreWindow->put_PointerCursor(iblankCursor);
+        if (FAILED(hr)) {
+            // The app doesn't contain the cursor resource, or some other error
+            // occurred.  Just use the other, but mouse-motion-preventing, means of
+            // hiding the cursor.
+            coreWindow->PointerCursor = nullptr;
+        }
+    }
+    return 0;
+}
+
+static int
+WINRT_SetRelativeMouseMode(SDL_bool enabled)
+{
+    WINRT_UsingRelativeMouseMode = enabled;
+    return 0;
+}
+
+void
+WINRT_InitMouse(_THIS)
+{
+    SDL_Mouse *mouse = SDL_GetMouse();
+
+    /* DLudwig, Dec 3, 2012: WinRT does not currently provide APIs for
+       the following features, AFAIK:
+        - custom cursors  (multiple system cursors are, however, available)
+        - programmatically moveable cursors
+    */
+
+#if WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP
+    //mouse->CreateCursor = WINRT_CreateCursor;
+    mouse->CreateSystemCursor = WINRT_CreateSystemCursor;
+    mouse->ShowCursor = WINRT_ShowCursor;
+    mouse->FreeCursor = WINRT_FreeCursor;
+    //mouse->WarpMouse = WINRT_WarpMouse;
+    mouse->SetRelativeMouseMode = WINRT_SetRelativeMouseMode;
+
+    SDL_SetDefaultCursor(WINRT_CreateDefaultCursor());
+#endif
+}
+
+void
+WINRT_QuitMouse(_THIS)
+{
+}
+
+#endif /* SDL_VIDEO_DRIVER_WINRT */
+
+/* vi: set ts=4 sw=4 expandtab: */