| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/generic/dragimgg.cpp |
| 3 | // Purpose: Generic wxDragImage implementation |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 29/2/2000 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #if wxUSE_DRAGIMAGE |
| 28 | |
| 29 | #ifndef WX_PRECOMP |
| 30 | #include <stdio.h> |
| 31 | #include "wx/window.h" |
| 32 | #include "wx/frame.h" |
| 33 | #include "wx/dcclient.h" |
| 34 | #include "wx/dcscreen.h" |
| 35 | #include "wx/dcmemory.h" |
| 36 | #include "wx/settings.h" |
| 37 | #include "wx/intl.h" |
| 38 | #include "wx/log.h" |
| 39 | #include "wx/image.h" |
| 40 | #endif |
| 41 | |
| 42 | #define wxUSE_IMAGE_IN_DRAGIMAGE 1 |
| 43 | |
| 44 | #include "wx/generic/dragimgg.h" |
| 45 | |
| 46 | // ---------------------------------------------------------------------------- |
| 47 | // macros |
| 48 | // ---------------------------------------------------------------------------- |
| 49 | |
| 50 | IMPLEMENT_DYNAMIC_CLASS(wxGenericDragImage, wxObject) |
| 51 | |
| 52 | // ============================================================================ |
| 53 | // implementation |
| 54 | // ============================================================================ |
| 55 | |
| 56 | // ---------------------------------------------------------------------------- |
| 57 | // wxGenericDragImage ctors/dtor |
| 58 | // ---------------------------------------------------------------------------- |
| 59 | |
| 60 | wxGenericDragImage::~wxGenericDragImage() |
| 61 | { |
| 62 | if (m_windowDC) |
| 63 | { |
| 64 | delete m_windowDC; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | void wxGenericDragImage::Init() |
| 69 | { |
| 70 | m_isDirty = false; |
| 71 | m_isShown = false; |
| 72 | m_windowDC = (wxDC*) NULL; |
| 73 | m_window = (wxWindow*) NULL; |
| 74 | m_fullScreen = false; |
| 75 | #ifdef wxHAS_NATIVE_OVERLAY |
| 76 | m_dcOverlay = NULL; |
| 77 | #else |
| 78 | m_pBackingBitmap = (wxBitmap*) NULL; |
| 79 | #endif |
| 80 | } |
| 81 | |
| 82 | #if WXWIN_COMPATIBILITY_2_6 |
| 83 | wxGenericDragImage::wxGenericDragImage(const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 84 | { |
| 85 | Init(); |
| 86 | Create(cursor); |
| 87 | } |
| 88 | |
| 89 | wxGenericDragImage::wxGenericDragImage(const wxBitmap& image, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 90 | { |
| 91 | Init(); |
| 92 | |
| 93 | Create(image, cursor); |
| 94 | } |
| 95 | |
| 96 | wxGenericDragImage::wxGenericDragImage(const wxIcon& image, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 97 | { |
| 98 | Init(); |
| 99 | |
| 100 | Create(image, cursor); |
| 101 | } |
| 102 | |
| 103 | wxGenericDragImage::wxGenericDragImage(const wxString& str, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 104 | { |
| 105 | Init(); |
| 106 | |
| 107 | Create(str, cursor); |
| 108 | } |
| 109 | |
| 110 | bool wxGenericDragImage::Create(const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 111 | { |
| 112 | return Create(cursor); |
| 113 | } |
| 114 | |
| 115 | bool wxGenericDragImage::Create(const wxBitmap& image, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 116 | { |
| 117 | return Create(image, cursor); |
| 118 | } |
| 119 | |
| 120 | bool wxGenericDragImage::Create(const wxIcon& image, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 121 | { |
| 122 | return Create(image, cursor); |
| 123 | } |
| 124 | |
| 125 | bool wxGenericDragImage::Create(const wxString& str, const wxCursor& cursor, const wxPoint& WXUNUSED(cursorHotspot)) |
| 126 | { |
| 127 | return Create(str, cursor); |
| 128 | } |
| 129 | #endif // WXWIN_COMPATIBILITY_2_6 |
| 130 | |
| 131 | // Attributes |
| 132 | //////////////////////////////////////////////////////////////////////////// |
| 133 | |
| 134 | |
| 135 | // Operations |
| 136 | //////////////////////////////////////////////////////////////////////////// |
| 137 | |
| 138 | // Create a drag image with a virtual image (need to override DoDrawImage, GetImageRect) |
| 139 | bool wxGenericDragImage::Create(const wxCursor& cursor) |
| 140 | { |
| 141 | m_cursor = cursor; |
| 142 | |
| 143 | return true; |
| 144 | } |
| 145 | |
| 146 | // Create a drag image from a bitmap and optional cursor |
| 147 | bool wxGenericDragImage::Create(const wxBitmap& image, const wxCursor& cursor) |
| 148 | { |
| 149 | // We don't have to combine the cursor explicitly since we simply show the cursor |
| 150 | // as we drag. This currently will only work within one window. |
| 151 | |
| 152 | m_cursor = cursor; |
| 153 | m_bitmap = image; |
| 154 | |
| 155 | return true ; |
| 156 | } |
| 157 | |
| 158 | // Create a drag image from an icon and optional cursor |
| 159 | bool wxGenericDragImage::Create(const wxIcon& image, const wxCursor& cursor) |
| 160 | { |
| 161 | // We don't have to combine the cursor explicitly since we simply show the cursor |
| 162 | // as we drag. This currently will only work within one window. |
| 163 | |
| 164 | m_cursor = cursor; |
| 165 | m_icon = image; |
| 166 | |
| 167 | return true ; |
| 168 | } |
| 169 | |
| 170 | // Create a drag image from a string and optional cursor |
| 171 | bool wxGenericDragImage::Create(const wxString& str, const wxCursor& cursor) |
| 172 | { |
| 173 | wxFont font(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)); |
| 174 | |
| 175 | wxCoord w = 0, h = 0; |
| 176 | wxScreenDC dc; |
| 177 | dc.SetFont(font); |
| 178 | dc.GetTextExtent(str, & w, & h); |
| 179 | dc.SetFont(wxNullFont); |
| 180 | |
| 181 | wxMemoryDC dc2; |
| 182 | |
| 183 | // Sometimes GetTextExtent isn't accurate enough, so make it longer |
| 184 | wxBitmap bitmap((int) ((w+2) * 1.5), (int) h+2); |
| 185 | dc2.SelectObject(bitmap); |
| 186 | |
| 187 | dc2.SetFont(font); |
| 188 | dc2.SetBackground(* wxWHITE_BRUSH); |
| 189 | dc2.Clear(); |
| 190 | dc2.SetBackgroundMode(wxTRANSPARENT); |
| 191 | dc2.SetTextForeground(* wxLIGHT_GREY); |
| 192 | dc2.DrawText(str, 0, 0); |
| 193 | dc2.DrawText(str, 1, 0); |
| 194 | dc2.DrawText(str, 2, 0); |
| 195 | dc2.DrawText(str, 1, 1); |
| 196 | dc2.DrawText(str, 2, 1); |
| 197 | dc2.DrawText(str, 1, 2); |
| 198 | dc2.DrawText(str, 2, 2); |
| 199 | |
| 200 | dc2.SetTextForeground(* wxBLACK); |
| 201 | dc2.DrawText(str, 1, 1); |
| 202 | |
| 203 | dc2.SelectObject(wxNullBitmap); |
| 204 | |
| 205 | #if wxUSE_IMAGE_IN_DRAGIMAGE && (!defined(__WXMSW__) || wxUSE_WXDIB) |
| 206 | // Make the bitmap masked |
| 207 | wxImage image = bitmap.ConvertToImage(); |
| 208 | image.SetMaskColour(255, 255, 255); |
| 209 | bitmap = wxBitmap(image); |
| 210 | #endif |
| 211 | |
| 212 | return Create(bitmap, cursor); |
| 213 | } |
| 214 | |
| 215 | #if wxUSE_TREECTRL |
| 216 | // Create a drag image for the given tree control item |
| 217 | bool wxGenericDragImage::Create(const wxTreeCtrl& treeCtrl, wxTreeItemId& id) |
| 218 | { |
| 219 | wxString str = treeCtrl.GetItemText(id); |
| 220 | return Create(str); |
| 221 | } |
| 222 | #endif |
| 223 | |
| 224 | #if wxUSE_LISTCTRL |
| 225 | // Create a drag image for the given list control item |
| 226 | bool wxGenericDragImage::Create(const wxListCtrl& listCtrl, long id) |
| 227 | { |
| 228 | wxString str = listCtrl.GetItemText(id); |
| 229 | return Create(str); |
| 230 | } |
| 231 | #endif |
| 232 | |
| 233 | // Begin drag |
| 234 | bool wxGenericDragImage::BeginDrag(const wxPoint& hotspot, |
| 235 | wxWindow* window, |
| 236 | bool fullScreen, |
| 237 | wxRect* rect) |
| 238 | { |
| 239 | wxCHECK_MSG( window, false, wxT("Window must not be null in BeginDrag.")); |
| 240 | |
| 241 | // The image should be offset by this amount |
| 242 | m_offset = hotspot; |
| 243 | m_window = window; |
| 244 | m_fullScreen = fullScreen; |
| 245 | |
| 246 | if (rect) |
| 247 | m_boundingRect = * rect; |
| 248 | |
| 249 | m_isDirty = false; |
| 250 | m_isDirty = false; |
| 251 | |
| 252 | window->CaptureMouse(); |
| 253 | |
| 254 | if (m_cursor.Ok()) |
| 255 | { |
| 256 | m_oldCursor = window->GetCursor(); |
| 257 | window->SetCursor(m_cursor); |
| 258 | } |
| 259 | |
| 260 | // Make a copy of the window so we can repair damage done as the image is |
| 261 | // dragged. |
| 262 | |
| 263 | wxSize clientSize; |
| 264 | wxPoint pt; |
| 265 | if (!m_fullScreen) |
| 266 | { |
| 267 | clientSize = window->GetClientSize(); |
| 268 | m_boundingRect.x = 0; m_boundingRect.y = 0; |
| 269 | m_boundingRect.width = clientSize.x; m_boundingRect.height = clientSize.y; |
| 270 | } |
| 271 | else |
| 272 | { |
| 273 | int w, h; |
| 274 | wxDisplaySize(& w, & h); |
| 275 | clientSize.x = w; clientSize.y = h; |
| 276 | if (rect) |
| 277 | { |
| 278 | pt.x = m_boundingRect.x; pt.y = m_boundingRect.y; |
| 279 | clientSize.x = m_boundingRect.width; clientSize.y = m_boundingRect.height; |
| 280 | } |
| 281 | else |
| 282 | { |
| 283 | m_boundingRect.x = 0; m_boundingRect.y = 0; |
| 284 | m_boundingRect.width = w; m_boundingRect.height = h; |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | #ifndef wxHAS_NATIVE_OVERLAY |
| 289 | wxBitmap* backing = (m_pBackingBitmap ? m_pBackingBitmap : (wxBitmap*) & m_backingBitmap); |
| 290 | |
| 291 | if (!backing->Ok() || (backing->GetWidth() < clientSize.x || backing->GetHeight() < clientSize.y)) |
| 292 | (*backing) = wxBitmap(clientSize.x, clientSize.y); |
| 293 | #endif // !wxHAS_NATIVE_OVERLAY |
| 294 | |
| 295 | if (!m_fullScreen) |
| 296 | { |
| 297 | m_windowDC = new wxClientDC(window); |
| 298 | } |
| 299 | else |
| 300 | { |
| 301 | m_windowDC = new wxScreenDC; |
| 302 | |
| 303 | #if 0 |
| 304 | // Use m_boundingRect to limit the area considered. |
| 305 | ((wxScreenDC*) m_windowDC)->StartDrawingOnTop(rect); |
| 306 | #endif |
| 307 | |
| 308 | m_windowDC->SetClippingRegion(m_boundingRect.x, m_boundingRect.y, |
| 309 | m_boundingRect.width, m_boundingRect.height); |
| 310 | } |
| 311 | |
| 312 | return true; |
| 313 | } |
| 314 | |
| 315 | // Begin drag. hotspot is the location of the drag position relative to the upper-left |
| 316 | // corner of the image. This is full screen only. fullScreenRect gives the |
| 317 | // position of the window on the screen, to restrict the drag to. |
| 318 | bool wxGenericDragImage::BeginDrag(const wxPoint& hotspot, wxWindow* window, wxWindow* fullScreenRect) |
| 319 | { |
| 320 | wxRect rect; |
| 321 | |
| 322 | int x = fullScreenRect->GetPosition().x; |
| 323 | int y = fullScreenRect->GetPosition().y; |
| 324 | |
| 325 | wxSize sz = fullScreenRect->GetSize(); |
| 326 | |
| 327 | if (fullScreenRect->GetParent() && !fullScreenRect->IsKindOf(CLASSINFO(wxFrame))) |
| 328 | fullScreenRect->GetParent()->ClientToScreen(& x, & y); |
| 329 | |
| 330 | rect.x = x; rect.y = y; |
| 331 | rect.width = sz.x; rect.height = sz.y; |
| 332 | |
| 333 | return BeginDrag(hotspot, window, true, & rect); |
| 334 | } |
| 335 | |
| 336 | // End drag |
| 337 | bool wxGenericDragImage::EndDrag() |
| 338 | { |
| 339 | if (m_window) |
| 340 | { |
| 341 | #ifdef __WXMSW__ |
| 342 | // Under Windows we can be pretty sure this test will give |
| 343 | // the correct results |
| 344 | if (wxWindow::GetCapture() == m_window) |
| 345 | #endif |
| 346 | m_window->ReleaseMouse(); |
| 347 | |
| 348 | if (m_cursor.Ok() && m_oldCursor.Ok()) |
| 349 | { |
| 350 | m_window->SetCursor(m_oldCursor); |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | if (m_windowDC) |
| 355 | { |
| 356 | #ifdef wxHAS_NATIVE_OVERLAY |
| 357 | m_overlay.Reset(); |
| 358 | #else |
| 359 | m_windowDC->DestroyClippingRegion(); |
| 360 | #endif |
| 361 | delete m_windowDC; |
| 362 | m_windowDC = (wxDC*) NULL; |
| 363 | } |
| 364 | |
| 365 | #ifndef wxHAS_NATIVE_OVERLAY |
| 366 | m_repairBitmap = wxNullBitmap; |
| 367 | #endif |
| 368 | |
| 369 | return true; |
| 370 | } |
| 371 | |
| 372 | // Move the image: call from OnMouseMove. Pt is in window client coordinates if window |
| 373 | // is non-NULL, or in screen coordinates if NULL. |
| 374 | bool wxGenericDragImage::Move(const wxPoint& pt) |
| 375 | { |
| 376 | wxASSERT_MSG( (m_windowDC != (wxDC*) NULL), wxT("No window DC in wxGenericDragImage::Move()") ); |
| 377 | |
| 378 | wxPoint pt2(pt); |
| 379 | if (m_fullScreen) |
| 380 | pt2 = m_window->ClientToScreen(pt); |
| 381 | |
| 382 | // Erase at old position, then show at the current position |
| 383 | wxPoint oldPos = m_position; |
| 384 | |
| 385 | bool eraseOldImage = (m_isDirty && m_isShown); |
| 386 | |
| 387 | if (m_isShown) |
| 388 | RedrawImage(oldPos - m_offset, pt2 - m_offset, eraseOldImage, true); |
| 389 | |
| 390 | m_position = pt2; |
| 391 | |
| 392 | if (m_isShown) |
| 393 | m_isDirty = true; |
| 394 | |
| 395 | return true; |
| 396 | } |
| 397 | |
| 398 | bool wxGenericDragImage::Show() |
| 399 | { |
| 400 | wxASSERT_MSG( (m_windowDC != (wxDC*) NULL), wxT("No window DC in wxGenericDragImage::Show()") ); |
| 401 | |
| 402 | // Show at the current position |
| 403 | |
| 404 | if (!m_isShown) |
| 405 | { |
| 406 | // This is where we restore the backing bitmap, in case |
| 407 | // something has changed on the window. |
| 408 | |
| 409 | #ifndef wxHAS_NATIVE_OVERLAY |
| 410 | wxBitmap* backing = (m_pBackingBitmap ? m_pBackingBitmap : (wxBitmap*) & m_backingBitmap); |
| 411 | wxMemoryDC memDC; |
| 412 | memDC.SelectObject(* backing); |
| 413 | |
| 414 | UpdateBackingFromWindow(* m_windowDC, memDC, m_boundingRect, wxRect(0, 0, m_boundingRect.width, m_boundingRect.height)); |
| 415 | |
| 416 | //memDC.Blit(0, 0, m_boundingRect.width, m_boundingRect.height, m_windowDC, m_boundingRect.x, m_boundingRect.y); |
| 417 | memDC.SelectObject(wxNullBitmap); |
| 418 | #endif // !wxHAS_NATIVE_OVERLAY |
| 419 | |
| 420 | RedrawImage(m_position - m_offset, m_position - m_offset, false, true); |
| 421 | } |
| 422 | |
| 423 | m_isShown = true; |
| 424 | m_isDirty = true; |
| 425 | |
| 426 | return true; |
| 427 | } |
| 428 | |
| 429 | bool wxGenericDragImage::UpdateBackingFromWindow(wxDC& windowDC, wxMemoryDC& destDC, |
| 430 | const wxRect& sourceRect, const wxRect& destRect) const |
| 431 | { |
| 432 | return destDC.Blit(destRect.x, destRect.y, destRect.width, destRect.height, & windowDC, |
| 433 | sourceRect.x, sourceRect.y); |
| 434 | } |
| 435 | |
| 436 | bool wxGenericDragImage::Hide() |
| 437 | { |
| 438 | wxASSERT_MSG( (m_windowDC != (wxDC*) NULL), wxT("No window DC in wxGenericDragImage::Hide()") ); |
| 439 | |
| 440 | // Repair the old position |
| 441 | |
| 442 | if (m_isShown && m_isDirty) |
| 443 | { |
| 444 | RedrawImage(m_position - m_offset, m_position - m_offset, true, false); |
| 445 | } |
| 446 | |
| 447 | m_isShown = false; |
| 448 | m_isDirty = false; |
| 449 | |
| 450 | return true; |
| 451 | } |
| 452 | |
| 453 | // More efficient: erase and redraw simultaneously if possible |
| 454 | bool wxGenericDragImage::RedrawImage(const wxPoint& oldPos, const wxPoint& newPos, |
| 455 | bool eraseOld, bool drawNew) |
| 456 | { |
| 457 | if (!m_windowDC) |
| 458 | return false; |
| 459 | |
| 460 | #ifdef wxHAS_NATIVE_OVERLAY |
| 461 | wxDCOverlay dcoverlay( m_overlay, (wxWindowDC*) m_windowDC ) ; |
| 462 | if ( eraseOld ) |
| 463 | dcoverlay.Clear() ; |
| 464 | if (drawNew) |
| 465 | DoDrawImage(*m_windowDC, newPos); |
| 466 | #else // !wxHAS_NATIVE_OVERLAY |
| 467 | wxBitmap* backing = (m_pBackingBitmap ? m_pBackingBitmap : (wxBitmap*) & m_backingBitmap); |
| 468 | if (!backing->Ok()) |
| 469 | return false; |
| 470 | |
| 471 | wxRect oldRect(GetImageRect(oldPos)); |
| 472 | wxRect newRect(GetImageRect(newPos)); |
| 473 | |
| 474 | wxRect fullRect; |
| 475 | |
| 476 | // Full rect: the combination of both rects |
| 477 | if (eraseOld && drawNew) |
| 478 | { |
| 479 | int oldRight = oldRect.GetRight(); |
| 480 | int oldBottom = oldRect.GetBottom(); |
| 481 | int newRight = newRect.GetRight(); |
| 482 | int newBottom = newRect.GetBottom(); |
| 483 | |
| 484 | wxPoint topLeft = wxPoint(wxMin(oldPos.x, newPos.x), wxMin(oldPos.y, newPos.y)); |
| 485 | wxPoint bottomRight = wxPoint(wxMax(oldRight, newRight), wxMax(oldBottom, newBottom)); |
| 486 | |
| 487 | fullRect.x = topLeft.x; fullRect.y = topLeft.y; |
| 488 | fullRect.SetRight(bottomRight.x); |
| 489 | fullRect.SetBottom(bottomRight.y); |
| 490 | } |
| 491 | else if (eraseOld) |
| 492 | fullRect = oldRect; |
| 493 | else if (drawNew) |
| 494 | fullRect = newRect; |
| 495 | |
| 496 | // Make the bitmap bigger than it need be, so we don't |
| 497 | // keep reallocating all the time. |
| 498 | int excess = 50; |
| 499 | |
| 500 | if (!m_repairBitmap.Ok() || (m_repairBitmap.GetWidth() < fullRect.GetWidth() || m_repairBitmap.GetHeight() < fullRect.GetHeight())) |
| 501 | { |
| 502 | m_repairBitmap = wxBitmap(fullRect.GetWidth() + excess, fullRect.GetHeight() + excess); |
| 503 | } |
| 504 | |
| 505 | wxMemoryDC memDC; |
| 506 | memDC.SelectObject(* backing); |
| 507 | |
| 508 | wxMemoryDC memDCTemp; |
| 509 | memDCTemp.SelectObject(m_repairBitmap); |
| 510 | |
| 511 | // Draw the backing bitmap onto the repair bitmap. |
| 512 | // If full-screen, we may have specified the rect on the |
| 513 | // screen that we're using for our backing bitmap. |
| 514 | // So subtract this when we're blitting from the backing bitmap |
| 515 | // (translate from screen to backing-bitmap coords). |
| 516 | |
| 517 | memDCTemp.Blit(0, 0, fullRect.GetWidth(), fullRect.GetHeight(), & memDC, fullRect.x - m_boundingRect.x, fullRect.y - m_boundingRect.y); |
| 518 | |
| 519 | // If drawing, draw the image onto the mem DC |
| 520 | if (drawNew) |
| 521 | { |
| 522 | wxPoint pos(newPos.x - fullRect.x, newPos.y - fullRect.y) ; |
| 523 | DoDrawImage(memDCTemp, pos); |
| 524 | } |
| 525 | |
| 526 | // Now blit to the window |
| 527 | // Finally, blit the temp mem DC to the window. |
| 528 | m_windowDC->Blit(fullRect.x, fullRect.y, fullRect.width, fullRect.height, & memDCTemp, 0, 0); |
| 529 | |
| 530 | memDCTemp.SelectObject(wxNullBitmap); |
| 531 | memDC.SelectObject(wxNullBitmap); |
| 532 | #endif // wxHAS_NATIVE_OVERLAY/!wxHAS_NATIVE_OVERLAY |
| 533 | |
| 534 | return true; |
| 535 | } |
| 536 | |
| 537 | // Override this if you are using a virtual image (drawing your own image) |
| 538 | bool wxGenericDragImage::DoDrawImage(wxDC& dc, const wxPoint& pos) const |
| 539 | { |
| 540 | if (m_bitmap.Ok()) |
| 541 | { |
| 542 | dc.DrawBitmap(m_bitmap, pos.x, pos.y, (m_bitmap.GetMask() != 0)); |
| 543 | return true; |
| 544 | } |
| 545 | else if (m_icon.Ok()) |
| 546 | { |
| 547 | dc.DrawIcon(m_icon, pos.x, pos.y); |
| 548 | return true; |
| 549 | } |
| 550 | else |
| 551 | return false; |
| 552 | } |
| 553 | |
| 554 | // Override this if you are using a virtual image (drawing your own image) |
| 555 | wxRect wxGenericDragImage::GetImageRect(const wxPoint& pos) const |
| 556 | { |
| 557 | if (m_bitmap.Ok()) |
| 558 | { |
| 559 | return wxRect(pos.x, pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight()); |
| 560 | } |
| 561 | else if (m_icon.Ok()) |
| 562 | { |
| 563 | return wxRect(pos.x, pos.y, m_icon.GetWidth(), m_icon.GetHeight()); |
| 564 | } |
| 565 | else |
| 566 | { |
| 567 | return wxRect(pos.x, pos.y, 0, 0); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | #endif // wxUSE_DRAGIMAGE |