/Samples/Extra/VisualStyles2/VisualStyles2.d
D | 300 lines | 232 code | 51 blank | 17 comment | 13 complexity | 094510f12fb4c9c00ca7ea125eb08e8a MD5 | raw file
- /+
- + Copyright Andrej Mitrovic 2011.
- + Distributed under the Boost Software License, Version 1.0.
- + (See accompanying file LICENSE_1_0.txt or copy at
- + http://www.boost.org/LICENSE_1_0.txt)
- +
- + Similar as Extra\VisualStyles, but adds hit testing.
- +/
- module VisualStyles;
- import core.memory;
- import core.runtime;
- import core.thread;
- import std.conv;
- import std.math;
- import std.range;
- import std.string;
- import std.traits;
- 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 uxSchema;
- import uxTheme;
- string appName = "VisualStyles";
- string description = "VisualStyles 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;
- HACCEL hAccel;
- 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.hbrBackground = null; // don't send WM_ERASEBKND messages
- 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;
- }
- enum Control
- {
- Button
- }
- template isOneOf(X, T...)
- {
- static if (!T.length)
- enum bool isOneOf = false;
- else static if (is (X == T[0]))
- enum bool isOneOf = true;
- else
- enum bool isOneOf = isOneOf!(Unqual!X, T[1..$]);
- }
- auto get(T)(LPARAM lParam)
- if (isOneOf!(T, SIZE, POINT))
- {
- return T(cast(short)LOWORD(lParam),
- cast(short)HIWORD(lParam));
- }
- extern (Windows)
- LRESULT WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) nothrow
- {
- scope (failure) assert(0);
- static int cxClient, cyClient, cxSource, cySource;
- int x, y;
- HDC hdc;
- PAINTSTRUCT ps;
- static POINT hitPoint;
- static bool mouseLDown;
- static HDC hdcMem;
- static HBITMAP hbmMem;
- static HANDLE hOld;
- RECT rect;
- switch (message)
- {
- case WM_LBUTTONDOWN:
- {
- hitPoint = get!POINT(lParam);
- mouseLDown = true;
- InvalidateRect(hwnd, NULL, TRUE);
- return 0;
- }
- case WM_LBUTTONUP:
- {
- hitPoint = get!POINT(lParam);
- mouseLDown = false;
- InvalidateRect(hwnd, NULL, TRUE);
- return 0;
- }
- case WM_MOUSEMOVE:
- {
- hitPoint = get!POINT(lParam);
- InvalidateRect(hwnd, NULL, TRUE);
- return 0;
- }
- case WM_SIZE:
- cxClient = LOWORD(lParam);
- cyClient = HIWORD(lParam);
- return 0;
- // When you set 'hbrBackground = null' it prevents
- // the WM_ERASEBKND message to be sent.
- case WM_ERASEBKGND:
- return 1;
- case WM_PAINT:
- {
- // Get DC for window
- hdc = BeginPaint(hwnd, &ps);
- // Create an off-screen DC for double-buffering
- hdcMem = CreateCompatibleDC(hdc);
- hbmMem = CreateCompatibleBitmap(hdc, cxClient, cyClient);
- hOld = SelectObject(hdcMem, hbmMem);
- //~ writeln(buttonState);
- auto buttonRect = RECT(100, 100, 190, 130);
- DrawControl(hwnd, hdcMem, buttonRect, Control.Button, mouseLDown, hitPoint);
- // Transfer the off-screen DC to the screen
- BitBlt(hdc, 0, 0, cxClient, cyClient, hdcMem, 0, 0, SRCCOPY);
- // Free-up the off-screen DC
- SelectObject(hdcMem, hOld);
- DeleteObject(hbmMem);
- DeleteDC (hdcMem);
- EndPaint(hwnd, &ps);
- return 0;
- }
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0;
- default:
- }
- return DefWindowProc(hwnd, message, wParam, lParam);
- }
- void DrawControl(HWND hwnd, HDC hdcMem, RECT rect, Control control, bool mouseLDown, POINT hitPoint)
- {
- HTHEME hTheme = OpenThemeData(hwnd, "Button");
- scope(exit)
- {
- if (hTheme !is null)
- CloseThemeData(hTheme);
- }
- final switch (control)
- {
- case Control.Button:
- {
- if (hTheme is null)
- {
- DrawCustomButton(hdcMem, rect, mouseLDown, hitPoint);
- }
- else
- {
- DrawThemedButton(hTheme, hdcMem, rect, mouseLDown, hitPoint);
- }
- break;
- }
- }
- }
- import std.utf : count;
- import std.exception;
- import std.stdio;
- void DrawCustomButton(HDC hDC, RECT rc, bool mouseLDown, POINT hitPoint)
- {
- SIZE size;
- auto text = "My button";
- FillRect(hDC, &rc, cast(HBRUSH)GetStockObject(GRAY_BRUSH));
- FrameRect(hDC, &rc, cast(HBRUSH)GetStockObject(LTGRAY_BRUSH));
- // calculate center
- GetTextExtentPoint32(hDC, text.toUTF16z, text.count, &size);
- auto rectWidth = (rc.right - rc.left);
- auto textWidth = (size.cx);
- auto xPos = rc.left + ((rectWidth - textWidth) / 2);
- auto rectHeight = (rc.bottom - rc.top);
- auto textHeight = (size.cy);
- auto yPos = rc.top + ((rectHeight - textHeight) / 2);
- TextOut(hDC, xPos, yPos, text.toUTF16z, text.count);
- }
- void DrawThemedButton(HTHEME hTheme, HDC hDC, RECT rc, bool mouseLDown, POINT hitPoint)
- {
- RECT rcContent;
- HRESULT hr;
- int state;
- auto text = "My button";
- WORD hitResult;
- HitTestThemeBackground(hTheme, hDC, BP_PUSHBUTTON, state,
- HTTB_BACKGROUNDSEG, &rc, null, hitPoint, &hitResult);
- if (hitResult == HTNOWHERE)
- {
- state = PBS_NORMAL;
- }
- else
- {
- state = mouseLDown ? PBS_PRESSED : PBS_HOT;
- }
- DrawThemeBackground(hTheme, hDC, BP_PUSHBUTTON, state, &rc, null);
- GetThemeBackgroundContentRect(hTheme, hDC, BP_PUSHBUTTON, state, &rc, &rcContent);
- DrawThemeText(hTheme, hDC, BP_PUSHBUTTON, state,
- text.toUTF16z, text.count,
- DT_CENTER | DT_VCENTER | DT_SINGLELINE,
- 0, &rcContent);
- }