| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 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_WINDOWS |
| |
| #include "SDL_assert.h" |
| #include "SDL_windowsvideo.h" |
| |
| #include "../../events/SDL_mouse_c.h" |
| |
| |
| HCURSOR SDL_cursor = NULL; |
| |
| static int rawInputEnableCount = 0; |
| |
| static int |
| ToggleRawInput(SDL_bool enabled) |
| { |
| RAWINPUTDEVICE rawMouse = { 0x01, 0x02, 0, NULL }; /* Mouse: UsagePage = 1, Usage = 2 */ |
| |
| if (enabled) { |
| rawInputEnableCount++; |
| if (rawInputEnableCount > 1) { |
| return 0; /* already done. */ |
| } |
| } else { |
| if (rawInputEnableCount == 0) { |
| return 0; /* already done. */ |
| } |
| rawInputEnableCount--; |
| if (rawInputEnableCount > 0) { |
| return 0; /* not time to disable yet */ |
| } |
| } |
| |
| if (!enabled) { |
| rawMouse.dwFlags |= RIDEV_REMOVE; |
| } |
| |
| /* (Un)register raw input for mice */ |
| if (RegisterRawInputDevices(&rawMouse, 1, sizeof(RAWINPUTDEVICE)) == FALSE) { |
| |
| /* Only return an error when registering. If we unregister and fail, |
| then it's probably that we unregistered twice. That's OK. */ |
| if (enabled) { |
| return SDL_Unsupported(); |
| } |
| } |
| return 0; |
| } |
| |
| |
| static SDL_Cursor * |
| WIN_CreateDefaultCursor() |
| { |
| SDL_Cursor *cursor; |
| |
| cursor = SDL_calloc(1, sizeof(*cursor)); |
| if (cursor) { |
| cursor->driverdata = LoadCursor(NULL, IDC_ARROW); |
| } else { |
| SDL_OutOfMemory(); |
| } |
| |
| return cursor; |
| } |
| |
| static SDL_Cursor * |
| WIN_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y) |
| { |
| /* msdn says cursor mask has to be padded out to word alignment. Not sure |
| if that means machine word or WORD, but this handles either case. */ |
| const size_t pad = (sizeof (size_t) * 8); /* 32 or 64, or whatever. */ |
| SDL_Cursor *cursor; |
| HICON hicon; |
| HDC hdc; |
| BITMAPV4HEADER bmh; |
| LPVOID pixels; |
| LPVOID maskbits; |
| size_t maskbitslen; |
| ICONINFO ii; |
| |
| SDL_zero(bmh); |
| bmh.bV4Size = sizeof(bmh); |
| bmh.bV4Width = surface->w; |
| bmh.bV4Height = -surface->h; /* Invert the image */ |
| bmh.bV4Planes = 1; |
| bmh.bV4BitCount = 32; |
| bmh.bV4V4Compression = BI_BITFIELDS; |
| bmh.bV4AlphaMask = 0xFF000000; |
| bmh.bV4RedMask = 0x00FF0000; |
| bmh.bV4GreenMask = 0x0000FF00; |
| bmh.bV4BlueMask = 0x000000FF; |
| |
| maskbitslen = ((surface->w + (pad - (surface->w % pad))) / 8) * surface->h; |
| maskbits = SDL_stack_alloc(Uint8,maskbitslen); |
| if (maskbits == NULL) { |
| SDL_OutOfMemory(); |
| return NULL; |
| } |
| |
| /* AND the cursor against full bits: no change. We already have alpha. */ |
| SDL_memset(maskbits, 0xFF, maskbitslen); |
| |
| hdc = GetDC(NULL); |
| SDL_zero(ii); |
| ii.fIcon = FALSE; |
| ii.xHotspot = (DWORD)hot_x; |
| ii.yHotspot = (DWORD)hot_y; |
| ii.hbmColor = CreateDIBSection(hdc, (BITMAPINFO*)&bmh, DIB_RGB_COLORS, &pixels, NULL, 0); |
| ii.hbmMask = CreateBitmap(surface->w, surface->h, 1, 1, maskbits); |
| ReleaseDC(NULL, hdc); |
| SDL_stack_free(maskbits); |
| |
| SDL_assert(surface->format->format == SDL_PIXELFORMAT_ARGB8888); |
| SDL_assert(surface->pitch == surface->w * 4); |
| SDL_memcpy(pixels, surface->pixels, surface->h * surface->pitch); |
| |
| hicon = CreateIconIndirect(&ii); |
| |
| DeleteObject(ii.hbmColor); |
| DeleteObject(ii.hbmMask); |
| |
| if (!hicon) { |
| WIN_SetError("CreateIconIndirect()"); |
| return NULL; |
| } |
| |
| cursor = SDL_calloc(1, sizeof(*cursor)); |
| if (cursor) { |
| cursor->driverdata = hicon; |
| } else { |
| DestroyIcon(hicon); |
| SDL_OutOfMemory(); |
| } |
| |
| return cursor; |
| } |
| |
| static SDL_Cursor * |
| WIN_CreateSystemCursor(SDL_SystemCursor id) |
| { |
| SDL_Cursor *cursor; |
| LPCTSTR name; |
| |
| switch(id) |
| { |
| default: |
| SDL_assert(0); |
| return NULL; |
| case SDL_SYSTEM_CURSOR_ARROW: name = IDC_ARROW; break; |
| case SDL_SYSTEM_CURSOR_IBEAM: name = IDC_IBEAM; break; |
| case SDL_SYSTEM_CURSOR_WAIT: name = IDC_WAIT; break; |
| case SDL_SYSTEM_CURSOR_CROSSHAIR: name = IDC_CROSS; break; |
| case SDL_SYSTEM_CURSOR_WAITARROW: name = IDC_WAIT; break; |
| case SDL_SYSTEM_CURSOR_SIZENWSE: name = IDC_SIZENWSE; break; |
| case SDL_SYSTEM_CURSOR_SIZENESW: name = IDC_SIZENESW; break; |
| case SDL_SYSTEM_CURSOR_SIZEWE: name = IDC_SIZEWE; break; |
| case SDL_SYSTEM_CURSOR_SIZENS: name = IDC_SIZENS; break; |
| case SDL_SYSTEM_CURSOR_SIZEALL: name = IDC_SIZEALL; break; |
| case SDL_SYSTEM_CURSOR_NO: name = IDC_NO; break; |
| case SDL_SYSTEM_CURSOR_HAND: name = IDC_HAND; break; |
| } |
| |
| cursor = SDL_calloc(1, sizeof(*cursor)); |
| if (cursor) { |
| HICON hicon; |
| |
| hicon = LoadCursor(NULL, name); |
| |
| cursor->driverdata = hicon; |
| } else { |
| SDL_OutOfMemory(); |
| } |
| |
| return cursor; |
| } |
| |
| static void |
| WIN_FreeCursor(SDL_Cursor * cursor) |
| { |
| HICON hicon = (HICON)cursor->driverdata; |
| |
| DestroyIcon(hicon); |
| SDL_free(cursor); |
| } |
| |
| static int |
| WIN_ShowCursor(SDL_Cursor * cursor) |
| { |
| if (cursor) { |
| SDL_cursor = (HCURSOR)cursor->driverdata; |
| } else { |
| SDL_cursor = NULL; |
| } |
| if (SDL_GetMouseFocus() != NULL) { |
| SetCursor(SDL_cursor); |
| } |
| return 0; |
| } |
| |
| static void |
| WIN_WarpMouse(SDL_Window * window, int x, int y) |
| { |
| SDL_WindowData *data = (SDL_WindowData *)window->driverdata; |
| HWND hwnd = data->hwnd; |
| POINT pt; |
| |
| /* Don't warp the mouse while we're doing a modal interaction */ |
| if (data->in_title_click || data->focus_click_pending) { |
| return; |
| } |
| |
| pt.x = x; |
| pt.y = y; |
| ClientToScreen(hwnd, &pt); |
| SetCursorPos(pt.x, pt.y); |
| } |
| |
| static int |
| WIN_WarpMouseGlobal(int x, int y) |
| { |
| POINT pt; |
| |
| pt.x = x; |
| pt.y = y; |
| SetCursorPos(pt.x, pt.y); |
| return 0; |
| } |
| |
| static int |
| WIN_SetRelativeMouseMode(SDL_bool enabled) |
| { |
| return ToggleRawInput(enabled); |
| } |
| |
| static int |
| WIN_CaptureMouse(SDL_Window *window) |
| { |
| if (!window) { |
| SDL_Window *focusWin = SDL_GetKeyboardFocus(); |
| if (focusWin) { |
| WIN_OnWindowEnter(SDL_GetVideoDevice(), focusWin); /* make sure WM_MOUSELEAVE messages are (re)enabled. */ |
| } |
| } |
| |
| /* While we were thinking of SetCapture() when designing this API in SDL, |
| we didn't count on the fact that SetCapture() only tracks while the |
| left mouse button is held down! Instead, we listen for raw mouse input |
| and manually query the mouse when it leaves the window. :/ */ |
| return ToggleRawInput(window != NULL); |
| } |
| |
| static Uint32 |
| WIN_GetGlobalMouseState(int *x, int *y) |
| { |
| Uint32 retval = 0; |
| POINT pt = { 0, 0 }; |
| GetCursorPos(&pt); |
| *x = (int) pt.x; |
| *y = (int) pt.y; |
| |
| retval |= GetAsyncKeyState(VK_LBUTTON) & 0x8000 ? SDL_BUTTON_LMASK : 0; |
| retval |= GetAsyncKeyState(VK_RBUTTON) & 0x8000 ? SDL_BUTTON_RMASK : 0; |
| retval |= GetAsyncKeyState(VK_MBUTTON) & 0x8000 ? SDL_BUTTON_MMASK : 0; |
| retval |= GetAsyncKeyState(VK_XBUTTON1) & 0x8000 ? SDL_BUTTON_X1MASK : 0; |
| retval |= GetAsyncKeyState(VK_XBUTTON2) & 0x8000 ? SDL_BUTTON_X2MASK : 0; |
| |
| return retval; |
| } |
| |
| void |
| WIN_InitMouse(_THIS) |
| { |
| SDL_Mouse *mouse = SDL_GetMouse(); |
| |
| mouse->CreateCursor = WIN_CreateCursor; |
| mouse->CreateSystemCursor = WIN_CreateSystemCursor; |
| mouse->ShowCursor = WIN_ShowCursor; |
| mouse->FreeCursor = WIN_FreeCursor; |
| mouse->WarpMouse = WIN_WarpMouse; |
| mouse->WarpMouseGlobal = WIN_WarpMouseGlobal; |
| mouse->SetRelativeMouseMode = WIN_SetRelativeMouseMode; |
| mouse->CaptureMouse = WIN_CaptureMouse; |
| mouse->GetGlobalMouseState = WIN_GetGlobalMouseState; |
| |
| SDL_SetDefaultCursor(WIN_CreateDefaultCursor()); |
| |
| SDL_SetDoubleClickTime(GetDoubleClickTime()); |
| } |
| |
| void |
| WIN_QuitMouse(_THIS) |
| { |
| SDL_Mouse *mouse = SDL_GetMouse(); |
| if ( mouse->def_cursor ) { |
| SDL_free(mouse->def_cursor); |
| mouse->def_cursor = NULL; |
| mouse->cur_cursor = NULL; |
| } |
| |
| if (rawInputEnableCount) { /* force RAWINPUT off here. */ |
| rawInputEnableCount = 1; |
| ToggleRawInput(SDL_FALSE); |
| } |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_WINDOWS */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |