| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dc.cpp |
| 3 | // Purpose: wxDC class |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 01/02/97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart and Markus Holzem |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // =========================================================================== |
| 13 | // declarations |
| 14 | // =========================================================================== |
| 15 | |
| 16 | // --------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // --------------------------------------------------------------------------- |
| 19 | |
| 20 | #ifdef __GNUG__ |
| 21 | #pragma implementation "dc.h" |
| 22 | #endif |
| 23 | |
| 24 | // For compilers that support precompilation, includes "wx.h". |
| 25 | #include "wx/wxprec.h" |
| 26 | |
| 27 | #ifdef __BORLANDC__ |
| 28 | #pragma hdrstop |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/window.h" |
| 33 | #include "wx/dc.h" |
| 34 | #include "wx/utils.h" |
| 35 | #include "wx/dialog.h" |
| 36 | #include "wx/app.h" |
| 37 | #include "wx/bitmap.h" |
| 38 | #include "wx/dcmemory.h" |
| 39 | #include "wx/log.h" |
| 40 | #include "wx/icon.h" |
| 41 | #endif |
| 42 | |
| 43 | #include "wx/dcprint.h" |
| 44 | |
| 45 | #include <string.h> |
| 46 | #include <math.h> |
| 47 | |
| 48 | #if wxUSE_COMMON_DIALOGS |
| 49 | #include <commdlg.h> |
| 50 | #endif |
| 51 | |
| 52 | #ifndef __WIN32__ |
| 53 | #include <print.h> |
| 54 | #endif |
| 55 | |
| 56 | #include "wx/msw/private.h" |
| 57 | |
| 58 | #if !USE_SHARED_LIBRARY |
| 59 | IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject) |
| 60 | #endif |
| 61 | |
| 62 | // --------------------------------------------------------------------------- |
| 63 | // constants |
| 64 | // --------------------------------------------------------------------------- |
| 65 | |
| 66 | static const int VIEWPORT_EXTENT = 1000; |
| 67 | |
| 68 | static const int MM_POINTS = 9; |
| 69 | static const int MM_METRIC = 10; |
| 70 | |
| 71 | // =========================================================================== |
| 72 | // implementation |
| 73 | // =========================================================================== |
| 74 | |
| 75 | // --------------------------------------------------------------------------- |
| 76 | // wxDC |
| 77 | // --------------------------------------------------------------------------- |
| 78 | |
| 79 | // Default constructor |
| 80 | wxDC::wxDC() |
| 81 | { |
| 82 | m_canvas = NULL; |
| 83 | |
| 84 | m_oldBitmap = 0; |
| 85 | m_oldPen = 0; |
| 86 | m_oldBrush = 0; |
| 87 | m_oldFont = 0; |
| 88 | m_oldPalette = 0; |
| 89 | |
| 90 | m_bOwnsDC = FALSE; |
| 91 | m_hDC = 0; |
| 92 | |
| 93 | m_windowExtX = VIEWPORT_EXTENT; |
| 94 | m_windowExtY = VIEWPORT_EXTENT; |
| 95 | |
| 96 | m_hDCCount = 0; |
| 97 | } |
| 98 | |
| 99 | |
| 100 | wxDC::~wxDC() |
| 101 | { |
| 102 | if ( m_hDC != 0 ) { |
| 103 | SelectOldObjects(m_hDC); |
| 104 | if ( m_bOwnsDC ) { |
| 105 | if ( m_canvas == NULL ) |
| 106 | ::DeleteDC(GetHdc()); |
| 107 | else |
| 108 | ::ReleaseDC((HWND)m_canvas->GetHWND(), GetHdc()); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | } |
| 113 | |
| 114 | // This will select current objects out of the DC, |
| 115 | // which is what you have to do before deleting the |
| 116 | // DC. |
| 117 | void wxDC::SelectOldObjects(WXHDC dc) |
| 118 | { |
| 119 | if (dc) |
| 120 | { |
| 121 | if (m_oldBitmap) |
| 122 | { |
| 123 | ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap); |
| 124 | if (m_selectedBitmap.Ok()) |
| 125 | { |
| 126 | m_selectedBitmap.SetSelectedInto(NULL); |
| 127 | } |
| 128 | } |
| 129 | m_oldBitmap = 0; |
| 130 | if (m_oldPen) |
| 131 | { |
| 132 | ::SelectObject((HDC) dc, (HPEN) m_oldPen); |
| 133 | } |
| 134 | m_oldPen = 0; |
| 135 | if (m_oldBrush) |
| 136 | { |
| 137 | ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush); |
| 138 | } |
| 139 | m_oldBrush = 0; |
| 140 | if (m_oldFont) |
| 141 | { |
| 142 | ::SelectObject((HDC) dc, (HFONT) m_oldFont); |
| 143 | } |
| 144 | m_oldFont = 0; |
| 145 | if (m_oldPalette) |
| 146 | { |
| 147 | ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE); |
| 148 | } |
| 149 | m_oldPalette = 0; |
| 150 | } |
| 151 | |
| 152 | m_brush = wxNullBrush; |
| 153 | m_pen = wxNullPen; |
| 154 | m_palette = wxNullPalette; |
| 155 | m_font = wxNullFont; |
| 156 | m_backgroundBrush = wxNullBrush; |
| 157 | m_selectedBitmap = wxNullBitmap; |
| 158 | } |
| 159 | |
| 160 | // --------------------------------------------------------------------------- |
| 161 | // clipping |
| 162 | // --------------------------------------------------------------------------- |
| 163 | |
| 164 | void wxDC::DoSetClippingRegion(long cx, long cy, long cw, long ch) |
| 165 | { |
| 166 | m_clipping = TRUE; |
| 167 | m_clipX1 = (int)cx; |
| 168 | m_clipY1 = (int)cy; |
| 169 | m_clipX2 = (int)(cx + cw); |
| 170 | m_clipY2 = (int)(cy + ch); |
| 171 | |
| 172 | DoClipping((WXHDC) m_hDC); |
| 173 | } |
| 174 | |
| 175 | void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) |
| 176 | { |
| 177 | wxCHECK_RET( region.GetHRGN(), _T("invalid clipping region") ); |
| 178 | |
| 179 | wxRect box = region.GetBox(); |
| 180 | |
| 181 | m_clipping = TRUE; |
| 182 | m_clipX1 = box.x; |
| 183 | m_clipY1 = box.y; |
| 184 | m_clipX2 = box.x + box.width; |
| 185 | m_clipY2 = box.y + box.height; |
| 186 | |
| 187 | #ifdef __WIN16__ |
| 188 | SelectClipRgn(GetHdc(), (HRGN) region.GetHRGN()); |
| 189 | #else |
| 190 | ExtSelectClipRgn(GetHdc(), (HRGN) region.GetHRGN(), RGN_AND); |
| 191 | #endif |
| 192 | } |
| 193 | |
| 194 | void wxDC::DoClipping(WXHDC dc) |
| 195 | { |
| 196 | if (m_clipping && dc) |
| 197 | { |
| 198 | IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1), |
| 199 | XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2)); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | void wxDC::DestroyClippingRegion() |
| 204 | { |
| 205 | if (m_clipping && m_hDC) |
| 206 | { |
| 207 | // TODO: this should restore the previous clipping region, |
| 208 | // so that OnPaint processing works correctly, and the update clipping region |
| 209 | // doesn't get destroyed after the first DestroyClippingRegion. |
| 210 | HRGN rgn = CreateRectRgn(0, 0, 32000, 32000); |
| 211 | SelectClipRgn(GetHdc(), rgn); |
| 212 | DeleteObject(rgn); |
| 213 | } |
| 214 | m_clipping = FALSE; |
| 215 | } |
| 216 | |
| 217 | // --------------------------------------------------------------------------- |
| 218 | // query capabilities |
| 219 | // --------------------------------------------------------------------------- |
| 220 | |
| 221 | bool wxDC::CanDrawBitmap() const |
| 222 | { |
| 223 | return TRUE; |
| 224 | } |
| 225 | |
| 226 | bool wxDC::CanGetTextExtent() const |
| 227 | { |
| 228 | // What sort of display is it? |
| 229 | int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY); |
| 230 | |
| 231 | return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER); |
| 232 | } |
| 233 | |
| 234 | int wxDC::GetDepth() const |
| 235 | { |
| 236 | return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); |
| 237 | } |
| 238 | |
| 239 | // --------------------------------------------------------------------------- |
| 240 | // drawing |
| 241 | // --------------------------------------------------------------------------- |
| 242 | |
| 243 | void wxDC::Clear() |
| 244 | { |
| 245 | RECT rect; |
| 246 | if ( m_canvas ) |
| 247 | { |
| 248 | GetClientRect((HWND) m_canvas->GetHWND(), &rect); |
| 249 | } |
| 250 | else |
| 251 | { |
| 252 | wxCHECK_RET( m_selectedBitmap.Ok(), _T("this DC can't be cleared") ); |
| 253 | |
| 254 | rect.left = 0; rect.top = 0; |
| 255 | rect.right = m_selectedBitmap.GetWidth(); |
| 256 | rect.bottom = m_selectedBitmap.GetHeight(); |
| 257 | } |
| 258 | |
| 259 | (void) ::SetMapMode(GetHdc(), MM_TEXT); |
| 260 | |
| 261 | DWORD colour = GetBkColor(GetHdc()); |
| 262 | HBRUSH brush = CreateSolidBrush(colour); |
| 263 | FillRect(GetHdc(), &rect, brush); |
| 264 | DeleteObject(brush); |
| 265 | |
| 266 | ::SetMapMode(GetHdc(), MM_ANISOTROPIC); |
| 267 | ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); |
| 268 | ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); |
| 269 | ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); |
| 270 | ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); |
| 271 | } |
| 272 | |
| 273 | void wxDC::DoFloodFill(long x, long y, const wxColour& col, int style) |
| 274 | { |
| 275 | (void)ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), |
| 276 | col.GetPixel(), |
| 277 | style == wxFLOOD_SURFACE ? FLOODFILLSURFACE |
| 278 | : FLOODFILLBORDER); |
| 279 | |
| 280 | CalcBoundingBox(x, y); |
| 281 | } |
| 282 | |
| 283 | bool wxDC::DoGetPixel(long x, long y, wxColour *col) const |
| 284 | { |
| 285 | // added by steve 29.12.94 (copied from DrawPoint) |
| 286 | // returns TRUE for pixels in the color of the current pen |
| 287 | // and FALSE for all other pixels colors |
| 288 | // if col is non-NULL return the color of the pixel |
| 289 | |
| 290 | // get the color of the pixel |
| 291 | COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)); |
| 292 | // get the color of the pen |
| 293 | COLORREF pencolor = 0x00ffffff; |
| 294 | if (m_pen.Ok()) |
| 295 | { |
| 296 | pencolor = m_pen.GetColour().GetPixel(); |
| 297 | } |
| 298 | |
| 299 | // return the color of the pixel |
| 300 | if(col) |
| 301 | col->Set(GetRValue(pixelcolor),GetGValue(pixelcolor),GetBValue(pixelcolor)); |
| 302 | |
| 303 | // check, if color of the pixels is the same as the color |
| 304 | // of the current pen |
| 305 | return(pixelcolor==pencolor); |
| 306 | } |
| 307 | |
| 308 | void wxDC::DoCrossHair(long x, long y) |
| 309 | { |
| 310 | long x1 = x-VIEWPORT_EXTENT; |
| 311 | long y1 = y-VIEWPORT_EXTENT; |
| 312 | long x2 = x+VIEWPORT_EXTENT; |
| 313 | long y2 = y+VIEWPORT_EXTENT; |
| 314 | |
| 315 | (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL); |
| 316 | (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y)); |
| 317 | |
| 318 | (void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL); |
| 319 | (void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2)); |
| 320 | |
| 321 | CalcBoundingBox(x1, y1); |
| 322 | CalcBoundingBox(x2, y2); |
| 323 | } |
| 324 | |
| 325 | void wxDC::DoDrawLine(long x1, long y1, long x2, long y2) |
| 326 | { |
| 327 | (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL); |
| 328 | (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2)); |
| 329 | |
| 330 | /* MATTHEW: [6] New normalization */ |
| 331 | #if WX_STANDARD_GRAPHICS |
| 332 | (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2)); |
| 333 | #endif |
| 334 | |
| 335 | CalcBoundingBox(x1, y1); |
| 336 | CalcBoundingBox(x2, y2); |
| 337 | } |
| 338 | |
| 339 | void wxDC::DoDrawArc(long x1,long y1,long x2,long y2, long xc, long yc) |
| 340 | { |
| 341 | double dx = xc-x1; |
| 342 | double dy = yc-y1; |
| 343 | double radius = (double)sqrt(dx*dx+dy*dy) ;; |
| 344 | if (x1==x2 && x2==y2) |
| 345 | { |
| 346 | DrawEllipse(xc,yc,(long)(radius*2.0),(long)(radius*2.0)); |
| 347 | return; |
| 348 | } |
| 349 | |
| 350 | long xx1 = XLOG2DEV(x1); |
| 351 | long yy1 = YLOG2DEV(y1); |
| 352 | long xx2 = XLOG2DEV(x2); |
| 353 | long yy2 = YLOG2DEV(y2); |
| 354 | long xxc = XLOG2DEV(xc); |
| 355 | long yyc = YLOG2DEV(yc); |
| 356 | long ray = (long) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1))); |
| 357 | |
| 358 | (void)MoveToEx(GetHdc(), (int) xx1, (int) yy1, NULL); |
| 359 | long xxx1 = (long) (xxc-ray); |
| 360 | long yyy1 = (long) (yyc-ray); |
| 361 | long xxx2 = (long) (xxc+ray); |
| 362 | long yyy2 = (long) (yyc+ray); |
| 363 | if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT) |
| 364 | { |
| 365 | // Have to add 1 to bottom-right corner of rectangle |
| 366 | // to make semi-circles look right (crooked line otherwise). |
| 367 | // Unfortunately this is not a reliable method, depends |
| 368 | // on the size of shape. |
| 369 | // TODO: figure out why this happens! |
| 370 | Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, |
| 371 | xx1,yy1,xx2,yy2); |
| 372 | } |
| 373 | else |
| 374 | Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, |
| 375 | xx1,yy1,xx2,yy2); |
| 376 | |
| 377 | CalcBoundingBox((xc-radius), (yc-radius)); |
| 378 | CalcBoundingBox((xc+radius), (yc+radius)); |
| 379 | } |
| 380 | |
| 381 | void wxDC::DoDrawPoint(long x, long y) |
| 382 | { |
| 383 | COLORREF color = 0x00ffffff; |
| 384 | if (m_pen.Ok()) |
| 385 | { |
| 386 | color = m_pen.GetColour().GetPixel(); |
| 387 | } |
| 388 | |
| 389 | SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color); |
| 390 | |
| 391 | CalcBoundingBox(x, y); |
| 392 | } |
| 393 | |
| 394 | void wxDC::DoDrawPolygon(int n, wxPoint points[], long xoffset, long yoffset,int fillStyle) |
| 395 | { |
| 396 | // Do things less efficiently if we have offsets |
| 397 | if (xoffset != 0 || yoffset != 0) |
| 398 | { |
| 399 | POINT *cpoints = new POINT[n]; |
| 400 | int i; |
| 401 | for (i = 0; i < n; i++) |
| 402 | { |
| 403 | cpoints[i].x = (int)(points[i].x + xoffset); |
| 404 | cpoints[i].y = (int)(points[i].y + yoffset); |
| 405 | |
| 406 | CalcBoundingBox(cpoints[i].x, cpoints[i].y); |
| 407 | } |
| 408 | int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); |
| 409 | (void)Polygon(GetHdc(), cpoints, n); |
| 410 | SetPolyFillMode(GetHdc(),prev); |
| 411 | delete[] cpoints; |
| 412 | } |
| 413 | else |
| 414 | { |
| 415 | int i; |
| 416 | for (i = 0; i < n; i++) |
| 417 | CalcBoundingBox(points[i].x, points[i].y); |
| 418 | |
| 419 | int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); |
| 420 | (void)Polygon(GetHdc(), (POINT*) points, n); |
| 421 | SetPolyFillMode(GetHdc(),prev); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | void wxDC::DoDrawLines(int n, wxPoint points[], long xoffset, long yoffset) |
| 426 | { |
| 427 | // Do things less efficiently if we have offsets |
| 428 | if (xoffset != 0 || yoffset != 0) |
| 429 | { |
| 430 | POINT *cpoints = new POINT[n]; |
| 431 | int i; |
| 432 | for (i = 0; i < n; i++) |
| 433 | { |
| 434 | cpoints[i].x = (int)(points[i].x + xoffset); |
| 435 | cpoints[i].y = (int)(points[i].y + yoffset); |
| 436 | |
| 437 | CalcBoundingBox(cpoints[i].x, cpoints[i].y); |
| 438 | } |
| 439 | (void)Polyline(GetHdc(), cpoints, n); |
| 440 | delete[] cpoints; |
| 441 | } |
| 442 | else |
| 443 | { |
| 444 | int i; |
| 445 | for (i = 0; i < n; i++) |
| 446 | CalcBoundingBox(points[i].x, points[i].y); |
| 447 | |
| 448 | (void)Polyline(GetHdc(), (POINT*) points, n); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | void wxDC::DoDrawRectangle(long x, long y, long width, long height) |
| 453 | { |
| 454 | long x2 = x + width; |
| 455 | long y2 = y + height; |
| 456 | |
| 457 | /* MATTHEW: [6] new normalization */ |
| 458 | #if WX_STANDARD_GRAPHICS |
| 459 | bool do_brush, do_pen; |
| 460 | |
| 461 | do_brush = m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT; |
| 462 | do_pen = m_pen.Ok() && m_pen.GetStyle() != wxTRANSPARENT; |
| 463 | |
| 464 | if (do_brush) { |
| 465 | HPEN orig_pen = NULL; |
| 466 | |
| 467 | if (do_pen || !m_pen.Ok()) |
| 468 | orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); |
| 469 | |
| 470 | (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), |
| 471 | XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1); |
| 472 | |
| 473 | if (do_pen || !m_pen.Ok()) |
| 474 | ::SelectObject(GetHdc() , orig_pen); |
| 475 | } |
| 476 | if (do_pen) { |
| 477 | HBRUSH orig_brush = NULL; |
| 478 | |
| 479 | if (do_brush || !m_brush.Ok()) |
| 480 | orig_brush = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH) ::GetStockObject(NULL_BRUSH)); |
| 481 | |
| 482 | (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), |
| 483 | XLOG2DEV(x2), YLOG2DEV(y2)); |
| 484 | |
| 485 | if (do_brush || !m_brush.Ok()) |
| 486 | ::SelectObject(GetHdc(), orig_brush); |
| 487 | } |
| 488 | #else |
| 489 | (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); |
| 490 | #endif |
| 491 | |
| 492 | CalcBoundingBox(x, y); |
| 493 | CalcBoundingBox(x2, y2); |
| 494 | } |
| 495 | |
| 496 | void wxDC::DoDrawRoundedRectangle(long x, long y, long width, long height, double radius) |
| 497 | { |
| 498 | // Now, a negative radius value is interpreted to mean |
| 499 | // 'the proportion of the smallest X or Y dimension' |
| 500 | |
| 501 | if (radius < 0.0) |
| 502 | { |
| 503 | double smallest = 0.0; |
| 504 | if (width < height) |
| 505 | smallest = width; |
| 506 | else |
| 507 | smallest = height; |
| 508 | radius = (- radius * smallest); |
| 509 | } |
| 510 | |
| 511 | long x2 = (x+width); |
| 512 | long y2 = (y+height); |
| 513 | |
| 514 | (void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), |
| 515 | YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius))); |
| 516 | |
| 517 | CalcBoundingBox(x, y); |
| 518 | CalcBoundingBox(x2, y2); |
| 519 | } |
| 520 | |
| 521 | void wxDC::DoDrawEllipse(long x, long y, long width, long height) |
| 522 | { |
| 523 | long x2 = (x+width); |
| 524 | long y2 = (y+height); |
| 525 | |
| 526 | (void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); |
| 527 | |
| 528 | CalcBoundingBox(x, y); |
| 529 | CalcBoundingBox(x2, y2); |
| 530 | } |
| 531 | |
| 532 | // Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows |
| 533 | void wxDC::DoDrawEllipticArc(long x,long y,long w,long h,double sa,double ea) |
| 534 | { |
| 535 | long x2 = (x+w); |
| 536 | long y2 = (y+h); |
| 537 | |
| 538 | const double deg2rad = 3.14159265359 / 180.0; |
| 539 | int rx1 = XLOG2DEV(x+w/2); |
| 540 | int ry1 = YLOG2DEV(y+h/2); |
| 541 | int rx2 = rx1; |
| 542 | int ry2 = ry1; |
| 543 | rx1 += (int)(100.0 * abs(w) * cos(sa * deg2rad)); |
| 544 | ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa * deg2rad)); |
| 545 | rx2 += (int)(100.0 * abs(w) * cos(ea * deg2rad)); |
| 546 | ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea * deg2rad)); |
| 547 | |
| 548 | // draw pie with NULL_PEN first and then outline otherwise a line is |
| 549 | // drawn from the start and end points to the centre |
| 550 | HPEN orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); |
| 551 | if (m_signY > 0) |
| 552 | { |
| 553 | (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1, |
| 554 | rx1, ry1, rx2, ry2); |
| 555 | } |
| 556 | else |
| 557 | { |
| 558 | (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2), |
| 559 | rx1, ry1-1, rx2, ry2-1); |
| 560 | } |
| 561 | ::SelectObject(GetHdc(), orig_pen); |
| 562 | (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2), |
| 563 | rx1, ry1, rx2, ry2); |
| 564 | |
| 565 | CalcBoundingBox(x, y); |
| 566 | CalcBoundingBox(x2, y2); |
| 567 | } |
| 568 | |
| 569 | void wxDC::DoDrawIcon(const wxIcon& icon, long x, long y) |
| 570 | { |
| 571 | #if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__) |
| 572 | ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON(), |
| 573 | icon.GetWidth(), icon.GetHeight(), 0, 0, DI_NORMAL); |
| 574 | #else |
| 575 | ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON()); |
| 576 | #endif |
| 577 | |
| 578 | CalcBoundingBox(x, y); |
| 579 | CalcBoundingBox(x+icon.GetWidth(), y+icon.GetHeight()); |
| 580 | } |
| 581 | |
| 582 | void wxDC::DoDrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask ) |
| 583 | { |
| 584 | if (!bmp.Ok()) |
| 585 | return; |
| 586 | |
| 587 | // If we're not drawing transparently, and not drawing to a printer, |
| 588 | // optimize this function to use Windows functions. |
| 589 | if (!useMask && !IsKindOf(CLASSINFO(wxPrinterDC))) |
| 590 | { |
| 591 | HDC cdc = GetHdc(); |
| 592 | HDC memdc = ::CreateCompatibleDC( cdc ); |
| 593 | HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( ); |
| 594 | ::SelectObject( memdc, hbitmap ); |
| 595 | ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY); |
| 596 | ::DeleteDC( memdc ); |
| 597 | } |
| 598 | else |
| 599 | { |
| 600 | // Rather than reproduce wxDC::Blit, let's do it at the wxWin API level |
| 601 | wxMemoryDC memDC; |
| 602 | memDC.SelectObject(bmp); |
| 603 | |
| 604 | /* Not sure if we need this. The mask should leave the |
| 605 | * masked areas as per the original background of this DC. |
| 606 | */ |
| 607 | /* |
| 608 | // There might be transparent areas, so make these |
| 609 | // the same colour as this DC |
| 610 | memDC.SetBackground(* GetBackground()); |
| 611 | memDC.Clear(); |
| 612 | */ |
| 613 | |
| 614 | Blit(x, y, bmp.GetWidth(), bmp.GetHeight(), & memDC, 0, 0, wxCOPY, useMask); |
| 615 | |
| 616 | memDC.SelectObject(wxNullBitmap); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | void wxDC::DoDrawText(const wxString& text, long x, long y) |
| 621 | { |
| 622 | if (m_textForegroundColour.Ok()) |
| 623 | SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() ); |
| 624 | |
| 625 | DWORD old_background = 0; |
| 626 | if (m_textBackgroundColour.Ok()) |
| 627 | { |
| 628 | old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); |
| 629 | } |
| 630 | |
| 631 | if (m_backgroundMode == wxTRANSPARENT) |
| 632 | SetBkMode(GetHdc(), TRANSPARENT); |
| 633 | else |
| 634 | SetBkMode(GetHdc(), OPAQUE); |
| 635 | |
| 636 | (void)TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), WXSTRINGCAST text, wxStrlen(WXSTRINGCAST text)); |
| 637 | |
| 638 | if (m_textBackgroundColour.Ok()) |
| 639 | (void)SetBkColor(GetHdc(), old_background); |
| 640 | |
| 641 | CalcBoundingBox(x, y); |
| 642 | |
| 643 | long w, h; |
| 644 | GetTextExtent(text, &w, &h); |
| 645 | CalcBoundingBox((x + w), (y + h)); |
| 646 | } |
| 647 | |
| 648 | // --------------------------------------------------------------------------- |
| 649 | // set GDI objects |
| 650 | // --------------------------------------------------------------------------- |
| 651 | |
| 652 | void wxDC::SetPalette(const wxPalette& palette) |
| 653 | { |
| 654 | // Set the old object temporarily, in case the assignment deletes an object |
| 655 | // that's not yet selected out. |
| 656 | if (m_oldPalette) |
| 657 | { |
| 658 | ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); |
| 659 | m_oldPalette = 0; |
| 660 | } |
| 661 | |
| 662 | m_palette = palette; |
| 663 | |
| 664 | if (!m_palette.Ok()) |
| 665 | { |
| 666 | // Setting a NULL colourmap is a way of restoring |
| 667 | // the original colourmap |
| 668 | if (m_oldPalette) |
| 669 | { |
| 670 | ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); |
| 671 | m_oldPalette = 0; |
| 672 | } |
| 673 | |
| 674 | return; |
| 675 | } |
| 676 | |
| 677 | if (m_palette.Ok() && m_palette.GetHPALETTE()) |
| 678 | { |
| 679 | HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE); |
| 680 | if (!m_oldPalette) |
| 681 | m_oldPalette = (WXHPALETTE) oldPal; |
| 682 | |
| 683 | ::RealizePalette(GetHdc()); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | void wxDC::SetFont(const wxFont& the_font) |
| 688 | { |
| 689 | // Set the old object temporarily, in case the assignment deletes an object |
| 690 | // that's not yet selected out. |
| 691 | if (m_oldFont) |
| 692 | { |
| 693 | ::SelectObject(GetHdc(), (HFONT) m_oldFont); |
| 694 | m_oldFont = 0; |
| 695 | } |
| 696 | |
| 697 | m_font = the_font; |
| 698 | |
| 699 | if (!the_font.Ok()) |
| 700 | { |
| 701 | if (m_oldFont) |
| 702 | ::SelectObject(GetHdc(), (HFONT) m_oldFont); |
| 703 | m_oldFont = 0; |
| 704 | } |
| 705 | |
| 706 | if (m_font.Ok() && m_font.GetResourceHandle()) |
| 707 | { |
| 708 | HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle()); |
| 709 | if (f == (HFONT) NULL) |
| 710 | { |
| 711 | wxLogDebug(_T("::SelectObject failed in wxDC::SetFont.")); |
| 712 | } |
| 713 | if (!m_oldFont) |
| 714 | m_oldFont = (WXHFONT) f; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | void wxDC::SetPen(const wxPen& pen) |
| 719 | { |
| 720 | // Set the old object temporarily, in case the assignment deletes an object |
| 721 | // that's not yet selected out. |
| 722 | if (m_oldPen) |
| 723 | { |
| 724 | ::SelectObject(GetHdc(), (HPEN) m_oldPen); |
| 725 | m_oldPen = 0; |
| 726 | } |
| 727 | |
| 728 | m_pen = pen; |
| 729 | |
| 730 | if (!m_pen.Ok()) |
| 731 | { |
| 732 | if (m_oldPen) |
| 733 | ::SelectObject(GetHdc(), (HPEN) m_oldPen); |
| 734 | m_oldPen = 0; |
| 735 | } |
| 736 | |
| 737 | if (m_pen.Ok()) |
| 738 | { |
| 739 | if (m_pen.GetResourceHandle()) |
| 740 | { |
| 741 | HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle()); |
| 742 | if (!m_oldPen) |
| 743 | m_oldPen = (WXHPEN) p; |
| 744 | } |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | void wxDC::SetBrush(const wxBrush& brush) |
| 749 | { |
| 750 | // Set the old object temporarily, in case the assignment deletes an object |
| 751 | // that's not yet selected out. |
| 752 | if (m_oldBrush) |
| 753 | { |
| 754 | ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); |
| 755 | m_oldBrush = 0; |
| 756 | } |
| 757 | |
| 758 | m_brush = brush; |
| 759 | |
| 760 | if (!m_brush.Ok()) |
| 761 | { |
| 762 | if (m_oldBrush) |
| 763 | ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); |
| 764 | m_oldBrush = 0; |
| 765 | } |
| 766 | |
| 767 | if (m_brush.Ok()) |
| 768 | { |
| 769 | if (m_brush.GetResourceHandle()) |
| 770 | { |
| 771 | HBRUSH b = 0; |
| 772 | b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); |
| 773 | if (!m_oldBrush) |
| 774 | m_oldBrush = (WXHBRUSH) b; |
| 775 | } |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | void wxDC::SetBackground(const wxBrush& brush) |
| 780 | { |
| 781 | m_backgroundBrush = brush; |
| 782 | |
| 783 | if (!m_backgroundBrush.Ok()) |
| 784 | return; |
| 785 | |
| 786 | if (m_canvas) |
| 787 | { |
| 788 | bool customColours = TRUE; |
| 789 | // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to |
| 790 | // change background colours from the control-panel specified colours. |
| 791 | if (m_canvas->IsKindOf(CLASSINFO(wxWindow)) && ((m_canvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS)) |
| 792 | customColours = FALSE; |
| 793 | |
| 794 | if (customColours) |
| 795 | { |
| 796 | if (m_backgroundBrush.GetStyle()==wxTRANSPARENT) |
| 797 | { |
| 798 | m_canvas->SetTransparent(TRUE); |
| 799 | } |
| 800 | else |
| 801 | { |
| 802 | // New behaviour, 10/2/99: setting the background brush of a DC |
| 803 | // doesn't affect the window background colour. However, |
| 804 | // I'm leaving in the transparency setting because it's needed by |
| 805 | // various controls (e.g. wxStaticText) to determine whether to draw |
| 806 | // transparently or not. TODO: maybe this should be a new function |
| 807 | // wxWindow::SetTransparency(). Should that apply to the child itself, or the |
| 808 | // parent? |
| 809 | // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour()); |
| 810 | m_canvas->SetTransparent(FALSE); |
| 811 | } |
| 812 | } |
| 813 | } |
| 814 | COLORREF new_color = m_backgroundBrush.GetColour().GetPixel(); |
| 815 | { |
| 816 | (void)SetBkColor(GetHdc(), new_color); |
| 817 | } |
| 818 | } |
| 819 | |
| 820 | void wxDC::SetBackgroundMode(int mode) |
| 821 | { |
| 822 | m_backgroundMode = mode; |
| 823 | |
| 824 | if (m_backgroundMode == wxTRANSPARENT) |
| 825 | ::SetBkMode(GetHdc(), TRANSPARENT); |
| 826 | else |
| 827 | ::SetBkMode(GetHdc(), OPAQUE); |
| 828 | } |
| 829 | |
| 830 | void wxDC::SetLogicalFunction(int function) |
| 831 | { |
| 832 | m_logicalFunction = function; |
| 833 | |
| 834 | SetRop((WXHDC) m_hDC); |
| 835 | } |
| 836 | |
| 837 | void wxDC::SetRop(WXHDC dc) |
| 838 | { |
| 839 | if (!dc || m_logicalFunction < 0) |
| 840 | return; |
| 841 | |
| 842 | int c_rop; |
| 843 | // These may be wrong |
| 844 | switch (m_logicalFunction) |
| 845 | { |
| 846 | // case wxXOR: c_rop = R2_XORPEN; break; |
| 847 | case wxXOR: c_rop = R2_NOTXORPEN; break; |
| 848 | case wxINVERT: c_rop = R2_NOT; break; |
| 849 | case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break; |
| 850 | case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break; |
| 851 | case wxCLEAR: c_rop = R2_WHITE; break; |
| 852 | case wxSET: c_rop = R2_BLACK; break; |
| 853 | case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break; |
| 854 | case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break; |
| 855 | case wxAND: c_rop = R2_MASKPEN; break; |
| 856 | case wxOR: c_rop = R2_MERGEPEN; break; |
| 857 | case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break; |
| 858 | case wxEQUIV: |
| 859 | case wxNAND: |
| 860 | case wxCOPY: |
| 861 | default: |
| 862 | c_rop = R2_COPYPEN; break; |
| 863 | } |
| 864 | SetROP2((HDC) dc, c_rop); |
| 865 | } |
| 866 | |
| 867 | bool wxDC::StartDoc(const wxString& message) |
| 868 | { |
| 869 | // We might be previewing, so return TRUE to let it continue. |
| 870 | return TRUE; |
| 871 | } |
| 872 | |
| 873 | void wxDC::EndDoc() |
| 874 | { |
| 875 | } |
| 876 | |
| 877 | void wxDC::StartPage() |
| 878 | { |
| 879 | } |
| 880 | |
| 881 | void wxDC::EndPage() |
| 882 | { |
| 883 | } |
| 884 | |
| 885 | // --------------------------------------------------------------------------- |
| 886 | // text metrics |
| 887 | // --------------------------------------------------------------------------- |
| 888 | |
| 889 | long wxDC::GetCharHeight() const |
| 890 | { |
| 891 | TEXTMETRIC lpTextMetric; |
| 892 | |
| 893 | GetTextMetrics(GetHdc(), &lpTextMetric); |
| 894 | |
| 895 | return YDEV2LOGREL(lpTextMetric.tmHeight); |
| 896 | } |
| 897 | |
| 898 | long wxDC::GetCharWidth() const |
| 899 | { |
| 900 | TEXTMETRIC lpTextMetric; |
| 901 | |
| 902 | GetTextMetrics(GetHdc(), &lpTextMetric); |
| 903 | |
| 904 | return XDEV2LOGREL(lpTextMetric.tmAveCharWidth); |
| 905 | } |
| 906 | |
| 907 | void wxDC::GetTextExtent(const wxString& string, long *x, long *y, |
| 908 | long *descent, long *externalLeading, |
| 909 | wxFont *theFont) const |
| 910 | { |
| 911 | wxFont *fontToUse = (wxFont*) theFont; |
| 912 | if (!fontToUse) |
| 913 | fontToUse = (wxFont*) &m_font; |
| 914 | |
| 915 | SIZE sizeRect; |
| 916 | TEXTMETRIC tm; |
| 917 | |
| 918 | GetTextExtentPoint(GetHdc(), WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect); |
| 919 | GetTextMetrics(GetHdc(), &tm); |
| 920 | |
| 921 | if (x) *x = XDEV2LOGREL(sizeRect.cx); |
| 922 | if (y) *y = YDEV2LOGREL(sizeRect.cy); |
| 923 | if (descent) *descent = tm.tmDescent; |
| 924 | if (externalLeading) *externalLeading = tm.tmExternalLeading; |
| 925 | } |
| 926 | |
| 927 | void wxDC::SetMapMode(int mode) |
| 928 | { |
| 929 | m_mappingMode = mode; |
| 930 | |
| 931 | int pixel_width = 0; |
| 932 | int pixel_height = 0; |
| 933 | int mm_width = 0; |
| 934 | int mm_height = 0; |
| 935 | |
| 936 | pixel_width = GetDeviceCaps(GetHdc(), HORZRES); |
| 937 | pixel_height = GetDeviceCaps(GetHdc(), VERTRES); |
| 938 | mm_width = GetDeviceCaps(GetHdc(), HORZSIZE); |
| 939 | mm_height = GetDeviceCaps(GetHdc(), VERTSIZE); |
| 940 | |
| 941 | if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0)) |
| 942 | { |
| 943 | return; |
| 944 | } |
| 945 | |
| 946 | double mm2pixelsX = pixel_width/mm_width; |
| 947 | double mm2pixelsY = pixel_height/mm_height; |
| 948 | |
| 949 | switch (mode) |
| 950 | { |
| 951 | case wxMM_TWIPS: |
| 952 | { |
| 953 | m_logicalScaleX = (twips2mm * mm2pixelsX); |
| 954 | m_logicalScaleY = (twips2mm * mm2pixelsY); |
| 955 | break; |
| 956 | } |
| 957 | case wxMM_POINTS: |
| 958 | { |
| 959 | m_logicalScaleX = (pt2mm * mm2pixelsX); |
| 960 | m_logicalScaleY = (pt2mm * mm2pixelsY); |
| 961 | break; |
| 962 | } |
| 963 | case wxMM_METRIC: |
| 964 | { |
| 965 | m_logicalScaleX = mm2pixelsX; |
| 966 | m_logicalScaleY = mm2pixelsY; |
| 967 | break; |
| 968 | } |
| 969 | case wxMM_LOMETRIC: |
| 970 | { |
| 971 | m_logicalScaleX = (mm2pixelsX/10.0); |
| 972 | m_logicalScaleY = (mm2pixelsY/10.0); |
| 973 | break; |
| 974 | } |
| 975 | default: |
| 976 | case wxMM_TEXT: |
| 977 | { |
| 978 | m_logicalScaleX = 1.0; |
| 979 | m_logicalScaleY = 1.0; |
| 980 | break; |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC) |
| 985 | ::SetMapMode(GetHdc(), MM_ANISOTROPIC); |
| 986 | |
| 987 | SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); |
| 988 | m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT); |
| 989 | m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT); |
| 990 | ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); |
| 991 | ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); |
| 992 | ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); |
| 993 | } |
| 994 | |
| 995 | void wxDC::SetUserScale(double x, double y) |
| 996 | { |
| 997 | m_userScaleX = x; |
| 998 | m_userScaleY = y; |
| 999 | |
| 1000 | SetMapMode(m_mappingMode); |
| 1001 | } |
| 1002 | |
| 1003 | void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) |
| 1004 | { |
| 1005 | m_signX = xLeftRight ? 1 : -1; |
| 1006 | m_signY = yBottomUp ? -1 : 1; |
| 1007 | |
| 1008 | SetMapMode(m_mappingMode); |
| 1009 | } |
| 1010 | |
| 1011 | void wxDC::SetSystemScale(double x, double y) |
| 1012 | { |
| 1013 | m_scaleX = x; |
| 1014 | m_scaleY = y; |
| 1015 | |
| 1016 | SetMapMode(m_mappingMode); |
| 1017 | } |
| 1018 | |
| 1019 | void wxDC::SetLogicalOrigin(long x, long y) |
| 1020 | { |
| 1021 | m_logicalOriginX = x; |
| 1022 | m_logicalOriginY = y; |
| 1023 | |
| 1024 | ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); |
| 1025 | } |
| 1026 | |
| 1027 | void wxDC::SetDeviceOrigin(long x, long y) |
| 1028 | { |
| 1029 | m_deviceOriginX = x; |
| 1030 | m_deviceOriginY = y; |
| 1031 | |
| 1032 | ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); |
| 1033 | } |
| 1034 | |
| 1035 | // --------------------------------------------------------------------------- |
| 1036 | // coordinates transformations |
| 1037 | // --------------------------------------------------------------------------- |
| 1038 | |
| 1039 | long wxDCBase::DeviceToLogicalX(long x) const |
| 1040 | { |
| 1041 | return (long) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX); |
| 1042 | } |
| 1043 | |
| 1044 | long wxDCBase::DeviceToLogicalXRel(long x) const |
| 1045 | { |
| 1046 | return (long) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX)); |
| 1047 | } |
| 1048 | |
| 1049 | long wxDCBase::DeviceToLogicalY(long y) const |
| 1050 | { |
| 1051 | return (long) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY); |
| 1052 | } |
| 1053 | |
| 1054 | long wxDCBase::DeviceToLogicalYRel(long y) const |
| 1055 | { |
| 1056 | return (long) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY)); |
| 1057 | } |
| 1058 | |
| 1059 | long wxDCBase::LogicalToDeviceX(long x) const |
| 1060 | { |
| 1061 | return (long) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX); |
| 1062 | } |
| 1063 | |
| 1064 | long wxDCBase::LogicalToDeviceXRel(long x) const |
| 1065 | { |
| 1066 | return (long) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX); |
| 1067 | } |
| 1068 | |
| 1069 | long wxDCBase::LogicalToDeviceY(long y) const |
| 1070 | { |
| 1071 | return (long) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY); |
| 1072 | } |
| 1073 | |
| 1074 | long wxDCBase::LogicalToDeviceYRel(long y) const |
| 1075 | { |
| 1076 | return (long) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY); |
| 1077 | } |
| 1078 | |
| 1079 | // --------------------------------------------------------------------------- |
| 1080 | // bit blit |
| 1081 | // --------------------------------------------------------------------------- |
| 1082 | bool wxDC::DoBlit(long xdest, long ydest, long width, long height, |
| 1083 | wxDC *source, long xsrc, long ysrc, int rop, bool useMask) |
| 1084 | { |
| 1085 | long xdest1 = xdest; |
| 1086 | long ydest1 = ydest; |
| 1087 | long xsrc1 = xsrc; |
| 1088 | long ysrc1 = ysrc; |
| 1089 | |
| 1090 | // Chris Breeze 18/5/98: use text foreground/background colours |
| 1091 | // when blitting from 1-bit bitmaps |
| 1092 | COLORREF old_textground = ::GetTextColor(GetHdc()); |
| 1093 | COLORREF old_background = ::GetBkColor(GetHdc()); |
| 1094 | if (m_textForegroundColour.Ok()) |
| 1095 | { |
| 1096 | ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() ); |
| 1097 | } |
| 1098 | if (m_textBackgroundColour.Ok()) |
| 1099 | { |
| 1100 | ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); |
| 1101 | } |
| 1102 | |
| 1103 | DWORD dwRop = rop == wxCOPY ? SRCCOPY : |
| 1104 | rop == wxCLEAR ? WHITENESS : |
| 1105 | rop == wxSET ? BLACKNESS : |
| 1106 | rop == wxINVERT ? DSTINVERT : |
| 1107 | rop == wxAND ? MERGECOPY : |
| 1108 | rop == wxOR ? MERGEPAINT : |
| 1109 | rop == wxSRC_INVERT ? NOTSRCCOPY : |
| 1110 | rop == wxXOR ? SRCINVERT : |
| 1111 | rop == wxOR_REVERSE ? MERGEPAINT : |
| 1112 | rop == wxAND_REVERSE ? SRCERASE : |
| 1113 | rop == wxSRC_OR ? SRCPAINT : |
| 1114 | rop == wxSRC_AND ? SRCAND : |
| 1115 | SRCCOPY; |
| 1116 | |
| 1117 | bool success = TRUE; |
| 1118 | if (useMask && source->m_selectedBitmap.Ok() && source->m_selectedBitmap.GetMask()) |
| 1119 | { |
| 1120 | |
| 1121 | #if 0 // __WIN32__ |
| 1122 | // Not implemented under Win95 (or maybe a specific device?) |
| 1123 | if (MaskBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, |
| 1124 | (HDC) source->m_hDC, xsrc1, ysrc1, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap(), |
| 1125 | 0, 0, 0xAACC0020)) |
| 1126 | { |
| 1127 | // Success |
| 1128 | } |
| 1129 | else |
| 1130 | #endif |
| 1131 | { |
| 1132 | // Old code |
| 1133 | #if 0 |
| 1134 | HDC dc_mask = CreateCompatibleDC((HDC) source->m_hDC); |
| 1135 | ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap()); |
| 1136 | success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, |
| 1137 | dc_mask, xsrc1, ysrc1, 0x00220326 /* NOTSRCAND */) != 0); |
| 1138 | success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, |
| 1139 | (HDC) source->m_hDC, xsrc1, ysrc1, SRCPAINT) != 0); |
| 1140 | ::SelectObject(dc_mask, 0); |
| 1141 | ::DeleteDC(dc_mask); |
| 1142 | #endif |
| 1143 | // New code from Chris Breeze, 15/7/98 |
| 1144 | // Blit bitmap with mask |
| 1145 | |
| 1146 | if (IsKindOf(CLASSINFO(wxPrinterDC))) |
| 1147 | { |
| 1148 | // If we are printing source colours are screen colours |
| 1149 | // not printer colours and so we need copy the bitmap |
| 1150 | // pixel by pixel. |
| 1151 | RECT rect; |
| 1152 | HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC); |
| 1153 | HDC dc_src = (HDC) source->m_hDC; |
| 1154 | |
| 1155 | ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap()); |
| 1156 | for (int x = 0; x < width; x++) |
| 1157 | { |
| 1158 | for (int y = 0; y < height; y++) |
| 1159 | { |
| 1160 | COLORREF cref = ::GetPixel(dc_mask, x, y); |
| 1161 | if (cref) |
| 1162 | { |
| 1163 | HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y)); |
| 1164 | rect.left = xdest1 + x; rect.right = rect.left + 1; |
| 1165 | rect.top = ydest1 + y; rect.bottom = rect.top + 1; |
| 1166 | ::FillRect(GetHdc(), &rect, brush); |
| 1167 | ::DeleteObject(brush); |
| 1168 | } |
| 1169 | } |
| 1170 | } |
| 1171 | ::SelectObject(dc_mask, 0); |
| 1172 | ::DeleteDC(dc_mask); |
| 1173 | } |
| 1174 | else |
| 1175 | { |
| 1176 | // create a temp buffer bitmap and DCs to access it and the mask |
| 1177 | HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC); |
| 1178 | HDC dc_buffer = ::CreateCompatibleDC(GetHdc()); |
| 1179 | HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height); |
| 1180 | ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap()); |
| 1181 | ::SelectObject(dc_buffer, buffer_bmap); |
| 1182 | |
| 1183 | // copy dest to buffer |
| 1184 | ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, |
| 1185 | GetHdc(), xdest1, ydest1, SRCCOPY); |
| 1186 | |
| 1187 | // copy src to buffer using selected raster op |
| 1188 | ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, |
| 1189 | (HDC) source->m_hDC, xsrc1, ysrc1, dwRop); |
| 1190 | |
| 1191 | // set masked area in buffer to BLACK (pixel value 0) |
| 1192 | COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255)); |
| 1193 | COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0)); |
| 1194 | ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, |
| 1195 | dc_mask, xsrc1, ysrc1, SRCAND); |
| 1196 | |
| 1197 | // set unmasked area in dest to BLACK |
| 1198 | ::SetBkColor(GetHdc(), RGB(0, 0, 0)); |
| 1199 | ::SetTextColor(GetHdc(), RGB(255, 255, 255)); |
| 1200 | ::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, |
| 1201 | dc_mask, xsrc1, ysrc1, SRCAND); |
| 1202 | ::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values |
| 1203 | ::SetTextColor(GetHdc(), prevCol); |
| 1204 | |
| 1205 | // OR buffer to dest |
| 1206 | success = (::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, |
| 1207 | dc_buffer, 0, 0, SRCPAINT) != 0); |
| 1208 | |
| 1209 | // tidy up temporary DCs and bitmap |
| 1210 | ::SelectObject(dc_mask, 0); |
| 1211 | ::DeleteDC(dc_mask); |
| 1212 | ::SelectObject(dc_buffer, 0); |
| 1213 | ::DeleteDC(dc_buffer); |
| 1214 | ::DeleteObject(buffer_bmap); |
| 1215 | } |
| 1216 | } |
| 1217 | } |
| 1218 | else |
| 1219 | { |
| 1220 | if (IsKindOf(CLASSINFO(wxPrinterDC))) |
| 1221 | { |
| 1222 | // If we are printing, source colours are screen colours |
| 1223 | // not printer colours and so we need copy the bitmap |
| 1224 | // pixel by pixel. |
| 1225 | HDC dc_src = (HDC) source->m_hDC; |
| 1226 | RECT rect; |
| 1227 | for (int x = 0; x < width; x++) |
| 1228 | { |
| 1229 | for (int y = 0; y < height; y++) |
| 1230 | { |
| 1231 | HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y)); |
| 1232 | rect.left = xdest1 + x; rect.right = rect.left + 1; |
| 1233 | rect.top = ydest1 + y; rect.bottom = rect.top + 1; |
| 1234 | ::FillRect(GetHdc(), &rect, brush); |
| 1235 | ::DeleteObject(brush); |
| 1236 | } |
| 1237 | } |
| 1238 | } |
| 1239 | else |
| 1240 | { |
| 1241 | success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC, |
| 1242 | xsrc1, ysrc1, dwRop) != 0); |
| 1243 | } |
| 1244 | } |
| 1245 | ::SetTextColor(GetHdc(), old_textground); |
| 1246 | ::SetBkColor(GetHdc(), old_background); |
| 1247 | |
| 1248 | return success; |
| 1249 | } |
| 1250 | |
| 1251 | void wxDC::DoGetSize(int *w, int *h) const |
| 1252 | { |
| 1253 | if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); |
| 1254 | if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); |
| 1255 | } |
| 1256 | |
| 1257 | void wxDC::DoGetSizeMM(int *w, int *h) const |
| 1258 | { |
| 1259 | if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE); |
| 1260 | if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE); |
| 1261 | } |
| 1262 | |
| 1263 | wxSize wxDC::GetPPI() const |
| 1264 | { |
| 1265 | int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); |
| 1266 | int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); |
| 1267 | |
| 1268 | return wxSize(x, y); |
| 1269 | } |
| 1270 | |
| 1271 | // For use by wxWindows only, unless custom units are required. |
| 1272 | void wxDC::SetLogicalScale(double x, double y) |
| 1273 | { |
| 1274 | m_logicalScaleX = x; |
| 1275 | m_logicalScaleY = y; |
| 1276 | } |
| 1277 | |
| 1278 | #if WXWIN_COMPATIBILITY |
| 1279 | void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y, |
| 1280 | float *descent, float *externalLeading, |
| 1281 | wxFont *theFont, bool use16bit) const |
| 1282 | { |
| 1283 | long x1, y1, descent1, externalLeading1; |
| 1284 | GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit); |
| 1285 | *x = x1; *y = y1; |
| 1286 | if (descent) |
| 1287 | *descent = descent1; |
| 1288 | if (externalLeading) |
| 1289 | *externalLeading = externalLeading1; |
| 1290 | } |
| 1291 | #endif |
| 1292 | |
| 1293 | // --------------------------------------------------------------------------- |
| 1294 | // spline drawing code |
| 1295 | // --------------------------------------------------------------------------- |
| 1296 | |
| 1297 | #if wxUSE_SPLINES |
| 1298 | |
| 1299 | class wxSpline: public wxObject |
| 1300 | { |
| 1301 | public: |
| 1302 | int type; |
| 1303 | wxList *points; |
| 1304 | |
| 1305 | wxSpline(wxList *list); |
| 1306 | void DeletePoints(); |
| 1307 | |
| 1308 | // Doesn't delete points |
| 1309 | ~wxSpline(); |
| 1310 | }; |
| 1311 | |
| 1312 | void wx_draw_open_spline(wxDC *dc, wxSpline *spline); |
| 1313 | |
| 1314 | void wx_quadratic_spline(double a1, double b1, double a2, double b2, |
| 1315 | double a3, double b3, double a4, double b4); |
| 1316 | void wx_clear_stack(); |
| 1317 | int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3, |
| 1318 | double *y3, double *x4, double *y4); |
| 1319 | void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, |
| 1320 | double x4, double y4); |
| 1321 | static bool wx_spline_add_point(double x, double y); |
| 1322 | static void wx_spline_draw_point_array(wxDC *dc); |
| 1323 | wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3); |
| 1324 | |
| 1325 | void wxDC::DoDrawSpline(wxList *list) |
| 1326 | { |
| 1327 | wxSpline spline(list); |
| 1328 | |
| 1329 | wx_draw_open_spline(this, &spline); |
| 1330 | } |
| 1331 | |
| 1332 | wxList wx_spline_point_list; |
| 1333 | |
| 1334 | void wx_draw_open_spline(wxDC *dc, wxSpline *spline) |
| 1335 | { |
| 1336 | wxPoint *p; |
| 1337 | double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; |
| 1338 | double x1, y1, x2, y2; |
| 1339 | |
| 1340 | wxNode *node = spline->points->First(); |
| 1341 | p = (wxPoint *)node->Data(); |
| 1342 | |
| 1343 | x1 = p->x; |
| 1344 | y1 = p->y; |
| 1345 | |
| 1346 | node = node->Next(); |
| 1347 | p = (wxPoint *)node->Data(); |
| 1348 | |
| 1349 | x2 = p->x; |
| 1350 | y2 = p->y; |
| 1351 | cx1 = (double)((x1 + x2) / 2); |
| 1352 | cy1 = (double)((y1 + y2) / 2); |
| 1353 | cx2 = (double)((cx1 + x2) / 2); |
| 1354 | cy2 = (double)((cy1 + y2) / 2); |
| 1355 | |
| 1356 | wx_spline_add_point(x1, y1); |
| 1357 | |
| 1358 | while ((node = node->Next()) != NULL) |
| 1359 | { |
| 1360 | p = (wxPoint *)node->Data(); |
| 1361 | x1 = x2; |
| 1362 | y1 = y2; |
| 1363 | x2 = p->x; |
| 1364 | y2 = p->y; |
| 1365 | cx4 = (double)(x1 + x2) / 2; |
| 1366 | cy4 = (double)(y1 + y2) / 2; |
| 1367 | cx3 = (double)(x1 + cx4) / 2; |
| 1368 | cy3 = (double)(y1 + cy4) / 2; |
| 1369 | |
| 1370 | wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); |
| 1371 | |
| 1372 | cx1 = cx4; |
| 1373 | cy1 = cy4; |
| 1374 | cx2 = (double)(cx1 + x2) / 2; |
| 1375 | cy2 = (double)(cy1 + y2) / 2; |
| 1376 | } |
| 1377 | |
| 1378 | wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1)); |
| 1379 | wx_spline_add_point(x2, y2); |
| 1380 | |
| 1381 | wx_spline_draw_point_array(dc); |
| 1382 | |
| 1383 | } |
| 1384 | |
| 1385 | /********************* CURVES FOR SPLINES ***************************** |
| 1386 | |
| 1387 | The following spline drawing routine is from |
| 1388 | |
| 1389 | "An Algorithm for High-Speed Curve Generation" |
| 1390 | by George Merrill Chaikin, |
| 1391 | Computer Graphics and Image Processing, 3, Academic Press, |
| 1392 | 1974, 346-349. |
| 1393 | |
| 1394 | and |
| 1395 | |
| 1396 | "On Chaikin's Algorithm" by R. F. Riesenfeld, |
| 1397 | Computer Graphics and Image Processing, 4, Academic Press, |
| 1398 | 1975, 304-310. |
| 1399 | |
| 1400 | ***********************************************************************/ |
| 1401 | |
| 1402 | #define half(z1, z2) ((z1+z2)/2.0) |
| 1403 | #define THRESHOLD 5 |
| 1404 | |
| 1405 | /* iterative version */ |
| 1406 | |
| 1407 | void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4, |
| 1408 | double b4) |
| 1409 | { |
| 1410 | register double xmid, ymid; |
| 1411 | double x1, y1, x2, y2, x3, y3, x4, y4; |
| 1412 | |
| 1413 | wx_clear_stack(); |
| 1414 | wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4); |
| 1415 | |
| 1416 | while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) { |
| 1417 | xmid = (double)half(x2, x3); |
| 1418 | ymid = (double)half(y2, y3); |
| 1419 | if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD && |
| 1420 | fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) { |
| 1421 | wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1)); |
| 1422 | wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid)); |
| 1423 | } else { |
| 1424 | wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3), |
| 1425 | (double)half(x3, x4), (double)half(y3, y4), x4, y4); |
| 1426 | wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2), |
| 1427 | (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid); |
| 1428 | } |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | |
| 1433 | /* utilities used by spline drawing routines */ |
| 1434 | |
| 1435 | |
| 1436 | typedef struct wx_spline_stack_struct { |
| 1437 | double x1, y1, x2, y2, x3, y3, x4, y4; |
| 1438 | } |
| 1439 | Stack; |
| 1440 | |
| 1441 | #define SPLINE_STACK_DEPTH 20 |
| 1442 | static Stack wx_spline_stack[SPLINE_STACK_DEPTH]; |
| 1443 | static Stack *wx_stack_top; |
| 1444 | static int wx_stack_count; |
| 1445 | |
| 1446 | void wx_clear_stack() |
| 1447 | { |
| 1448 | wx_stack_top = wx_spline_stack; |
| 1449 | wx_stack_count = 0; |
| 1450 | } |
| 1451 | |
| 1452 | void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) |
| 1453 | { |
| 1454 | wx_stack_top->x1 = x1; |
| 1455 | wx_stack_top->y1 = y1; |
| 1456 | wx_stack_top->x2 = x2; |
| 1457 | wx_stack_top->y2 = y2; |
| 1458 | wx_stack_top->x3 = x3; |
| 1459 | wx_stack_top->y3 = y3; |
| 1460 | wx_stack_top->x4 = x4; |
| 1461 | wx_stack_top->y4 = y4; |
| 1462 | wx_stack_top++; |
| 1463 | wx_stack_count++; |
| 1464 | } |
| 1465 | |
| 1466 | int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, |
| 1467 | double *x3, double *y3, double *x4, double *y4) |
| 1468 | { |
| 1469 | if (wx_stack_count == 0) |
| 1470 | return (0); |
| 1471 | wx_stack_top--; |
| 1472 | wx_stack_count--; |
| 1473 | *x1 = wx_stack_top->x1; |
| 1474 | *y1 = wx_stack_top->y1; |
| 1475 | *x2 = wx_stack_top->x2; |
| 1476 | *y2 = wx_stack_top->y2; |
| 1477 | *x3 = wx_stack_top->x3; |
| 1478 | *y3 = wx_stack_top->y3; |
| 1479 | *x4 = wx_stack_top->x4; |
| 1480 | *y4 = wx_stack_top->y4; |
| 1481 | return (1); |
| 1482 | } |
| 1483 | |
| 1484 | static bool wx_spline_add_point(double x, double y) |
| 1485 | { |
| 1486 | wxPoint *point = new wxPoint; |
| 1487 | point->x = (int) x; |
| 1488 | point->y = (int) y; |
| 1489 | wx_spline_point_list.Append((wxObject*)point); |
| 1490 | return TRUE; |
| 1491 | } |
| 1492 | |
| 1493 | static void wx_spline_draw_point_array(wxDC *dc) |
| 1494 | { |
| 1495 | dc->DrawLines(&wx_spline_point_list, 0, 0); |
| 1496 | wxNode *node = wx_spline_point_list.First(); |
| 1497 | while (node) |
| 1498 | { |
| 1499 | wxPoint *point = (wxPoint *)node->Data(); |
| 1500 | delete point; |
| 1501 | delete node; |
| 1502 | node = wx_spline_point_list.First(); |
| 1503 | } |
| 1504 | } |
| 1505 | |
| 1506 | wxSpline::wxSpline(wxList *list) |
| 1507 | { |
| 1508 | points = list; |
| 1509 | } |
| 1510 | |
| 1511 | wxSpline::~wxSpline() |
| 1512 | { |
| 1513 | } |
| 1514 | |
| 1515 | void wxSpline::DeletePoints() |
| 1516 | { |
| 1517 | for(wxNode *node = points->First(); node; node = points->First()) |
| 1518 | { |
| 1519 | wxPoint *point = (wxPoint *)node->Data(); |
| 1520 | delete point; |
| 1521 | delete node; |
| 1522 | } |
| 1523 | delete points; |
| 1524 | } |
| 1525 | |
| 1526 | |
| 1527 | #endif // wxUSE_SPLINES |
| 1528 | |