| 1 | /* |
| 2 | * windows.c: Windows front end for my puzzle collection. |
| 3 | */ |
| 4 | |
| 5 | #include <windows.h> |
| 6 | |
| 7 | #include <stdio.h> |
| 8 | #include <stdarg.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <time.h> |
| 11 | |
| 12 | #include "puzzles.h" |
| 13 | |
| 14 | struct frontend { |
| 15 | midend_data *me; |
| 16 | HWND hwnd; |
| 17 | HBITMAP bitmap, prevbm; |
| 18 | HDC hdc_bm; |
| 19 | COLORREF *colours; |
| 20 | HBRUSH *brushes; |
| 21 | HPEN *pens; |
| 22 | UINT timer; |
| 23 | }; |
| 24 | |
| 25 | void fatal(char *fmt, ...) |
| 26 | { |
| 27 | char buf[2048]; |
| 28 | va_list ap; |
| 29 | |
| 30 | va_start(ap, fmt); |
| 31 | vsprintf(buf, fmt, ap); |
| 32 | va_end(ap); |
| 33 | |
| 34 | MessageBox(NULL, buf, "Fatal error", MB_ICONEXCLAMATION | MB_OK); |
| 35 | |
| 36 | exit(1); |
| 37 | } |
| 38 | |
| 39 | void frontend_default_colour(frontend *fe, float *output) |
| 40 | { |
| 41 | DWORD c = GetSysColor(COLOR_MENU); /* ick */ |
| 42 | |
| 43 | output[0] = (float)(GetRValue(c) / 255.0); |
| 44 | output[1] = (float)(GetGValue(c) / 255.0); |
| 45 | output[2] = (float)(GetBValue(c) / 255.0); |
| 46 | } |
| 47 | |
| 48 | void draw_rect(frontend *fe, int x, int y, int w, int h, int colour) |
| 49 | { |
| 50 | HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]); |
| 51 | HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]); |
| 52 | Rectangle(fe->hdc_bm, x, y, x+w, y+h); |
| 53 | SelectObject(fe->hdc_bm, oldbrush); |
| 54 | SelectObject(fe->hdc_bm, oldpen); |
| 55 | } |
| 56 | |
| 57 | void draw_line(frontend *fe, int x1, int y1, int x2, int y2, int colour) |
| 58 | { |
| 59 | HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]); |
| 60 | MoveToEx(fe->hdc_bm, x1, y1, NULL); |
| 61 | LineTo(fe->hdc_bm, x2, y2); |
| 62 | SetPixel(fe->hdc_bm, x2, y2, fe->colours[colour]); |
| 63 | SelectObject(fe->hdc_bm, oldpen); |
| 64 | } |
| 65 | |
| 66 | void draw_polygon(frontend *fe, int *coords, int npoints, |
| 67 | int fill, int colour) |
| 68 | { |
| 69 | POINT *pts = snewn(npoints+1, POINT); |
| 70 | int i; |
| 71 | |
| 72 | for (i = 0; i <= npoints; i++) { |
| 73 | int j = (i < npoints ? i : 0); |
| 74 | pts[i].x = coords[j*2]; |
| 75 | pts[i].y = coords[j*2+1]; |
| 76 | } |
| 77 | |
| 78 | if (fill) { |
| 79 | HBRUSH oldbrush = SelectObject(fe->hdc_bm, fe->brushes[colour]); |
| 80 | HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]); |
| 81 | Polygon(fe->hdc_bm, pts, npoints); |
| 82 | SelectObject(fe->hdc_bm, oldbrush); |
| 83 | SelectObject(fe->hdc_bm, oldpen); |
| 84 | } else { |
| 85 | HPEN oldpen = SelectObject(fe->hdc_bm, fe->pens[colour]); |
| 86 | Polyline(fe->hdc_bm, pts, npoints+1); |
| 87 | SelectObject(fe->hdc_bm, oldpen); |
| 88 | } |
| 89 | |
| 90 | sfree(pts); |
| 91 | } |
| 92 | |
| 93 | void start_draw(frontend *fe) |
| 94 | { |
| 95 | HDC hdc_win; |
| 96 | hdc_win = GetDC(fe->hwnd); |
| 97 | fe->hdc_bm = CreateCompatibleDC(hdc_win); |
| 98 | fe->prevbm = SelectObject(fe->hdc_bm, fe->bitmap); |
| 99 | ReleaseDC(fe->hwnd, hdc_win); |
| 100 | } |
| 101 | |
| 102 | void draw_update(frontend *fe, int x, int y, int w, int h) |
| 103 | { |
| 104 | RECT r; |
| 105 | |
| 106 | r.left = x; |
| 107 | r.top = y; |
| 108 | r.right = x + w; |
| 109 | r.bottom = y + h; |
| 110 | |
| 111 | InvalidateRect(fe->hwnd, &r, FALSE); |
| 112 | } |
| 113 | |
| 114 | void end_draw(frontend *fe) |
| 115 | { |
| 116 | SelectObject(fe->hdc_bm, fe->prevbm); |
| 117 | DeleteDC(fe->hdc_bm); |
| 118 | } |
| 119 | |
| 120 | void deactivate_timer(frontend *fe) |
| 121 | { |
| 122 | KillTimer(fe->hwnd, fe->timer); |
| 123 | fe->timer = 0; |
| 124 | } |
| 125 | |
| 126 | void activate_timer(frontend *fe) |
| 127 | { |
| 128 | fe->timer = SetTimer(fe->hwnd, fe->timer, 20, NULL); |
| 129 | } |
| 130 | |
| 131 | static frontend *new_window(HINSTANCE inst) |
| 132 | { |
| 133 | frontend *fe; |
| 134 | int x, y; |
| 135 | RECT r; |
| 136 | HDC hdc; |
| 137 | |
| 138 | fe = snew(frontend); |
| 139 | fe->me = midend_new(fe); |
| 140 | midend_new_game(fe->me, NULL); |
| 141 | midend_size(fe->me, &x, &y); |
| 142 | |
| 143 | fe->timer = 0; |
| 144 | |
| 145 | { |
| 146 | int i, ncolours; |
| 147 | float *colours; |
| 148 | |
| 149 | colours = midend_colours(fe->me, &ncolours); |
| 150 | |
| 151 | fe->colours = snewn(ncolours, COLORREF); |
| 152 | fe->brushes = snewn(ncolours, HBRUSH); |
| 153 | fe->pens = snewn(ncolours, HPEN); |
| 154 | |
| 155 | for (i = 0; i < ncolours; i++) { |
| 156 | fe->colours[i] = RGB(255 * colours[i*3+0], |
| 157 | 255 * colours[i*3+1], |
| 158 | 255 * colours[i*3+2]); |
| 159 | fe->brushes[i] = CreateSolidBrush(fe->colours[i]); |
| 160 | if (!fe->brushes[i]) |
| 161 | MessageBox(fe->hwnd, "ooh", "eck", MB_OK); |
| 162 | fe->pens[i] = CreatePen(PS_SOLID, 1, fe->colours[i]); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | r.left = r.top = 0; |
| 167 | r.right = x; |
| 168 | r.bottom = y; |
| 169 | AdjustWindowRectEx(&r, WS_OVERLAPPEDWINDOW &~ |
| 170 | (WS_THICKFRAME | WS_MAXIMIZEBOX | WS_OVERLAPPED), |
| 171 | FALSE, 0); |
| 172 | |
| 173 | fe->hwnd = CreateWindowEx(0, "puzzle", "puzzle", |
| 174 | WS_OVERLAPPEDWINDOW &~ |
| 175 | (WS_THICKFRAME | WS_MAXIMIZEBOX), |
| 176 | CW_USEDEFAULT, CW_USEDEFAULT, |
| 177 | r.right - r.left, r.bottom - r.top, |
| 178 | NULL, NULL, inst, NULL); |
| 179 | |
| 180 | hdc = GetDC(fe->hwnd); |
| 181 | fe->bitmap = CreateCompatibleBitmap(hdc, x, y); |
| 182 | ReleaseDC(fe->hwnd, hdc); |
| 183 | |
| 184 | SetWindowLong(fe->hwnd, GWL_USERDATA, (LONG)fe); |
| 185 | |
| 186 | ShowWindow(fe->hwnd, SW_NORMAL); |
| 187 | SetForegroundWindow(fe->hwnd); |
| 188 | |
| 189 | midend_redraw(fe->me); |
| 190 | |
| 191 | return fe; |
| 192 | } |
| 193 | |
| 194 | static LRESULT CALLBACK WndProc(HWND hwnd, UINT message, |
| 195 | WPARAM wParam, LPARAM lParam) |
| 196 | { |
| 197 | frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA); |
| 198 | |
| 199 | switch (message) { |
| 200 | case WM_CLOSE: |
| 201 | DestroyWindow(hwnd); |
| 202 | return 0; |
| 203 | case WM_DESTROY: |
| 204 | PostQuitMessage(0); |
| 205 | return 0; |
| 206 | case WM_PAINT: |
| 207 | { |
| 208 | PAINTSTRUCT p; |
| 209 | HDC hdc, hdc2; |
| 210 | HBITMAP prevbm; |
| 211 | |
| 212 | hdc = BeginPaint(hwnd, &p); |
| 213 | hdc2 = CreateCompatibleDC(hdc); |
| 214 | prevbm = SelectObject(hdc2, fe->bitmap); |
| 215 | BitBlt(hdc, |
| 216 | p.rcPaint.left, p.rcPaint.top, |
| 217 | p.rcPaint.right - p.rcPaint.left, |
| 218 | p.rcPaint.bottom - p.rcPaint.top, |
| 219 | hdc2, |
| 220 | p.rcPaint.left, p.rcPaint.top, |
| 221 | SRCCOPY); |
| 222 | SelectObject(hdc2, prevbm); |
| 223 | DeleteDC(hdc2); |
| 224 | EndPaint(hwnd, &p); |
| 225 | } |
| 226 | return 0; |
| 227 | case WM_KEYDOWN: |
| 228 | { |
| 229 | int key = -1; |
| 230 | |
| 231 | switch (wParam) { |
| 232 | case VK_LEFT: key = CURSOR_LEFT; break; |
| 233 | case VK_RIGHT: key = CURSOR_RIGHT; break; |
| 234 | case VK_UP: key = CURSOR_UP; break; |
| 235 | case VK_DOWN: key = CURSOR_DOWN; break; |
| 236 | } |
| 237 | |
| 238 | if (key != -1) { |
| 239 | if (!midend_process_key(fe->me, -1, -1, key)) |
| 240 | PostQuitMessage(0); |
| 241 | } |
| 242 | } |
| 243 | break; |
| 244 | case WM_LBUTTONDOWN: |
| 245 | case WM_RBUTTONDOWN: |
| 246 | case WM_MBUTTONDOWN: |
| 247 | if (!midend_process_key(fe->me, LOWORD(lParam), HIWORD(lParam), |
| 248 | (message == WM_LBUTTONDOWN ? LEFT_BUTTON : |
| 249 | message == WM_RBUTTONDOWN ? RIGHT_BUTTON : |
| 250 | MIDDLE_BUTTON))) |
| 251 | PostQuitMessage(0); |
| 252 | |
| 253 | break; |
| 254 | case WM_CHAR: |
| 255 | if (!midend_process_key(fe->me, -1, -1, (unsigned char)wParam)) |
| 256 | PostQuitMessage(0); |
| 257 | return 0; |
| 258 | case WM_TIMER: |
| 259 | if (fe->timer) |
| 260 | midend_timer(fe->me, (float)0.02); |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | return DefWindowProc(hwnd, message, wParam, lParam); |
| 265 | } |
| 266 | |
| 267 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) |
| 268 | { |
| 269 | MSG msg; |
| 270 | |
| 271 | srand(time(NULL)); |
| 272 | |
| 273 | if (!prev) { |
| 274 | WNDCLASS wndclass; |
| 275 | |
| 276 | wndclass.style = 0; |
| 277 | wndclass.lpfnWndProc = WndProc; |
| 278 | wndclass.cbClsExtra = 0; |
| 279 | wndclass.cbWndExtra = 0; |
| 280 | wndclass.hInstance = inst; |
| 281 | wndclass.hIcon = LoadIcon(inst, IDI_APPLICATION); |
| 282 | wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); |
| 283 | wndclass.hbrBackground = NULL; |
| 284 | wndclass.lpszMenuName = NULL; |
| 285 | wndclass.lpszClassName = "puzzle"; |
| 286 | |
| 287 | RegisterClass(&wndclass); |
| 288 | } |
| 289 | |
| 290 | new_window(inst); |
| 291 | |
| 292 | while (GetMessage(&msg, NULL, 0, 0)) { |
| 293 | TranslateMessage(&msg); |
| 294 | DispatchMessage(&msg); |
| 295 | } |
| 296 | |
| 297 | return msg.wParam; |
| 298 | } |