/Samples/Chap14/BitMask/BitMask.d
D | 188 lines | 140 code | 36 blank | 12 comment | 3 complexity | 80072ed976768dc90261b7e585e2642c MD5 | raw file
- /+
- + Copyright (c) Charles Petzold, 1998.
- + Ported to the D Programming Language by Andrej Mitrovic, 2011.
- +/
- module BitMask;
- import core.memory;
- import core.runtime;
- import core.thread;
- import std.conv;
- import std.math;
- import std.range;
- import std.string;
- import std.utf;
- auto toUTF16z(S)(S s)
- {
- return toUTFz!(const(wchar)*)(s);
- }
- pragma(lib, "gdi32.lib");
- import core.sys.windows.windef;
- import core.sys.windows.winuser;
- import core.sys.windows.wingdi;
- import core.sys.windows.winbase;
- import resource;
- string appName = "BitMask";
- string description = "Bitmap Masking Demo";
- HINSTANCE hinst;
- extern (Windows)
- int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
- {
- int result;
- try
- {
- Runtime.initialize();
- result = myWinMain(hInstance, hPrevInstance, lpCmdLine, iCmdShow);
- Runtime.terminate();
- }
- catch (Throwable o)
- {
- MessageBox(null, o.toString().toUTF16z, "Error", MB_OK | MB_ICONEXCLAMATION);
- result = 0;
- }
- return result;
- }
- int myWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
- {
- hinst = hInstance;
- HWND hwnd;
- MSG msg;
- WNDCLASS wndclass;
- wndclass.style = CS_HREDRAW | CS_VREDRAW;
- wndclass.lpfnWndProc = &WndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = 0;
- wndclass.hInstance = hInstance;
- wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
- wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
- wndclass.hbrBackground = cast(HBRUSH) GetStockObject(WHITE_BRUSH);
- wndclass.lpszMenuName = appName.toUTF16z;
- wndclass.lpszClassName = appName.toUTF16z;
- if (!RegisterClass(&wndclass))
- {
- MessageBox(NULL, "This program requires Windows NT!", appName.toUTF16z, MB_ICONERROR);
- return 0;
- }
- hwnd = CreateWindow(appName.toUTF16z, // window class name
- description.toUTF16z, // window caption
- WS_OVERLAPPEDWINDOW, // window style
- CW_USEDEFAULT, // initial x position
- CW_USEDEFAULT, // initial y position
- CW_USEDEFAULT, // initial x size
- CW_USEDEFAULT, // initial y size
- NULL, // parent window handle
- NULL, // window menu handle
- hInstance, // program instance handle
- NULL); // creation parameters
- ShowWindow(hwnd, iCmdShow);
- UpdateWindow(hwnd);
- while (GetMessage(&msg, NULL, 0, 0))
- {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- }
- return msg.wParam;
- }
- extern (Windows)
- LRESULT WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) nothrow
- {
- scope (failure) assert(0);
- static HBITMAP hBitmapImag, hBitmapMask;
- static HINSTANCE hInstance;
- static int cxClient, cyClient, cxBitmap, cyBitmap;
- BITMAP bitmap;
- HDC hdc, hdcMemImag, hdcMemMask;
- int x, y;
- PAINTSTRUCT ps;
- switch (message)
- {
- case WM_CREATE:
- hInstance = (cast(LPCREATESTRUCT)lParam).hInstance;
- // Load the original image and get its size
- hBitmapImag = LoadBitmap(hInstance, "Block");
- GetObject(hBitmapImag, BITMAP.sizeof, &bitmap);
- cxBitmap = bitmap.bmWidth;
- cyBitmap = bitmap.bmHeight;
- // Select the original image into a memory DC
- hdcMemImag = CreateCompatibleDC(NULL);
- SelectObject(hdcMemImag, hBitmapImag);
- // Create the monochrome mask bitmap and memory DC
- hBitmapMask = CreateBitmap(cxBitmap, cyBitmap, 1, 1, NULL);
- hdcMemMask = CreateCompatibleDC(NULL);
- SelectObject(hdcMemMask, hBitmapMask);
- // Color the mask bitmap black with a white ellipse
- SelectObject(hdcMemMask, GetStockObject(BLACK_BRUSH));
- Rectangle(hdcMemMask, 0, 0, cxBitmap, cyBitmap);
- SelectObject(hdcMemMask, GetStockObject(WHITE_BRUSH));
- Ellipse(hdcMemMask, 0, 0, cxBitmap, cyBitmap);
- // Mask the original image
- BitBlt(hdcMemImag, 0, 0, cxBitmap, cyBitmap,
- hdcMemMask, 0, 0, SRCAND);
- DeleteDC(hdcMemImag);
- DeleteDC(hdcMemMask);
- return 0;
- case WM_SIZE:
- cxClient = LOWORD(lParam);
- cyClient = HIWORD(lParam);
- return 0;
- case WM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
- // Select bitmaps into memory DCs
- hdcMemImag = CreateCompatibleDC(hdc);
- SelectObject(hdcMemImag, hBitmapImag);
- hdcMemMask = CreateCompatibleDC(hdc);
- SelectObject(hdcMemMask, hBitmapMask);
- // Center image
- x = (cxClient - cxBitmap) / 2;
- y = (cyClient - cyBitmap) / 2;
- // Do the bitblits
- BitBlt(hdc, x, y, cxBitmap, cyBitmap, hdcMemMask, 0, 0, 0x220326);
- BitBlt(hdc, x, y, cxBitmap, cyBitmap, hdcMemImag, 0, 0, SRCPAINT);
- DeleteDC(hdcMemImag);
- DeleteDC(hdcMemMask);
- EndPaint(hwnd, &ps);
- return 0;
- case WM_DESTROY:
- DeleteObject(hBitmapImag);
- DeleteObject(hBitmapMask);
- PostQuitMessage(0);
- return 0;
- default:
- }
- return DefWindowProc(hwnd, message, wParam, lParam);
- }