| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/univ/ctrlrend.cpp |
| 3 | // Purpose: wxControlRenderer implementation |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 15.08.00 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com) |
| 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 | #ifndef WX_PRECOMP |
| 28 | #include "wx/app.h" |
| 29 | #include "wx/control.h" |
| 30 | #include "wx/checklst.h" |
| 31 | #include "wx/listbox.h" |
| 32 | #include "wx/scrolbar.h" |
| 33 | #include "wx/dc.h" |
| 34 | #include "wx/log.h" |
| 35 | #include "wx/gauge.h" |
| 36 | #include "wx/image.h" |
| 37 | #endif // WX_PRECOMP |
| 38 | |
| 39 | #include "wx/univ/theme.h" |
| 40 | #include "wx/univ/renderer.h" |
| 41 | #include "wx/univ/colschem.h" |
| 42 | |
| 43 | // ============================================================================ |
| 44 | // implementation |
| 45 | // ============================================================================ |
| 46 | |
| 47 | wxRenderer::~wxRenderer() |
| 48 | { |
| 49 | } |
| 50 | |
| 51 | // ---------------------------------------------------------------------------- |
| 52 | // wxControlRenderer |
| 53 | // ---------------------------------------------------------------------------- |
| 54 | |
| 55 | wxControlRenderer::wxControlRenderer(wxWindow *window, |
| 56 | wxDC& dc, |
| 57 | wxRenderer *renderer) |
| 58 | : m_dc(dc) |
| 59 | { |
| 60 | m_window = window; |
| 61 | m_renderer = renderer; |
| 62 | |
| 63 | wxSize size = m_window->GetClientSize(); |
| 64 | m_rect.x = |
| 65 | m_rect.y = 0; |
| 66 | m_rect.width = size.x; |
| 67 | m_rect.height = size.y; |
| 68 | } |
| 69 | |
| 70 | void wxControlRenderer::DrawLabel(const wxBitmap& bitmap, |
| 71 | wxCoord marginX, wxCoord marginY) |
| 72 | { |
| 73 | m_dc.SetBackgroundMode(wxTRANSPARENT); |
| 74 | m_dc.SetFont(m_window->GetFont()); |
| 75 | m_dc.SetTextForeground(m_window->GetForegroundColour()); |
| 76 | |
| 77 | wxString label = m_window->GetLabel(); |
| 78 | if ( !label.empty() || bitmap.Ok() ) |
| 79 | { |
| 80 | wxRect rectLabel = m_rect; |
| 81 | if ( bitmap.Ok() ) |
| 82 | { |
| 83 | rectLabel.Inflate(-marginX, -marginY); |
| 84 | } |
| 85 | |
| 86 | wxControl *ctrl = wxStaticCast(m_window, wxControl); |
| 87 | |
| 88 | m_renderer->DrawButtonLabel(m_dc, |
| 89 | label, |
| 90 | bitmap, |
| 91 | rectLabel, |
| 92 | m_window->GetStateFlags(), |
| 93 | ctrl->GetAlignment(), |
| 94 | ctrl->GetAccelIndex()); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | void wxControlRenderer::DrawFrame() |
| 99 | { |
| 100 | m_dc.SetFont(m_window->GetFont()); |
| 101 | m_dc.SetTextForeground(m_window->GetForegroundColour()); |
| 102 | m_dc.SetTextBackground(m_window->GetBackgroundColour()); |
| 103 | |
| 104 | wxControl *ctrl = wxStaticCast(m_window, wxControl); |
| 105 | |
| 106 | m_renderer->DrawFrame(m_dc, |
| 107 | m_window->GetLabel(), |
| 108 | m_rect, |
| 109 | m_window->GetStateFlags(), |
| 110 | ctrl->GetAlignment(), |
| 111 | ctrl->GetAccelIndex()); |
| 112 | } |
| 113 | |
| 114 | void wxControlRenderer::DrawButtonBorder() |
| 115 | { |
| 116 | int flags = m_window->GetStateFlags(); |
| 117 | |
| 118 | m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect); |
| 119 | |
| 120 | // Why do this here? |
| 121 | // m_renderer->DrawButtonSurface(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags ); |
| 122 | } |
| 123 | |
| 124 | void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap) |
| 125 | { |
| 126 | int style = m_window->GetWindowStyle(); |
| 127 | DrawBitmap(m_dc, bitmap, m_rect, |
| 128 | style & wxALIGN_MASK, |
| 129 | style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT); |
| 130 | } |
| 131 | |
| 132 | /* static */ |
| 133 | void wxControlRenderer::DrawBitmap(wxDC &dc, |
| 134 | const wxBitmap& bitmap, |
| 135 | const wxRect& rect, |
| 136 | int alignment, |
| 137 | wxStretch stretch) |
| 138 | { |
| 139 | // we may change the bitmap if we stretch it |
| 140 | wxBitmap bmp = bitmap; |
| 141 | if ( !bmp.Ok() ) |
| 142 | return; |
| 143 | |
| 144 | int width = bmp.GetWidth(), |
| 145 | height = bmp.GetHeight(); |
| 146 | |
| 147 | wxCoord x = 0, |
| 148 | y = 0; |
| 149 | if ( stretch & wxTILE ) |
| 150 | { |
| 151 | // tile the bitmap |
| 152 | for ( ; x < rect.width; x += width ) |
| 153 | { |
| 154 | for ( y = 0; y < rect.height; y += height ) |
| 155 | { |
| 156 | // no need to use mask here as we cover the entire window area |
| 157 | dc.DrawBitmap(bmp, x, y); |
| 158 | } |
| 159 | } |
| 160 | } |
| 161 | #if wxUSE_IMAGE |
| 162 | else if ( stretch & wxEXPAND ) |
| 163 | { |
| 164 | // stretch bitmap to fill the entire control |
| 165 | bmp = wxBitmap(wxImage(bmp.ConvertToImage()).Scale(rect.width, rect.height)); |
| 166 | } |
| 167 | #endif // wxUSE_IMAGE |
| 168 | else // not stretched, not tiled |
| 169 | { |
| 170 | if ( alignment & wxALIGN_RIGHT ) |
| 171 | { |
| 172 | x = rect.GetRight() - width; |
| 173 | } |
| 174 | else if ( alignment & wxALIGN_CENTRE ) |
| 175 | { |
| 176 | x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2; |
| 177 | } |
| 178 | else // alignment & wxALIGN_LEFT |
| 179 | { |
| 180 | x = rect.GetLeft(); |
| 181 | } |
| 182 | |
| 183 | if ( alignment & wxALIGN_BOTTOM ) |
| 184 | { |
| 185 | y = rect.GetBottom() - height; |
| 186 | } |
| 187 | else if ( alignment & wxALIGN_CENTRE_VERTICAL ) |
| 188 | { |
| 189 | y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2; |
| 190 | } |
| 191 | else // alignment & wxALIGN_TOP |
| 192 | { |
| 193 | y = rect.GetTop(); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | // do draw it |
| 198 | dc.DrawBitmap(bmp, x, y, true /* use mask */); |
| 199 | } |
| 200 | |
| 201 | #if wxUSE_SCROLLBAR |
| 202 | |
| 203 | void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar, |
| 204 | int WXUNUSED(thumbPosOld)) |
| 205 | { |
| 206 | // we will only redraw the parts which must be redrawn and not everything |
| 207 | wxRegion rgnUpdate = scrollbar->GetUpdateRegion(); |
| 208 | |
| 209 | { |
| 210 | wxRect rectUpdate = rgnUpdate.GetBox(); |
| 211 | wxLogTrace(_T("scrollbar"), |
| 212 | _T("%s redraw: update box is (%d, %d)-(%d, %d)"), |
| 213 | scrollbar->IsVertical() ? _T("vert") : _T("horz"), |
| 214 | rectUpdate.GetLeft(), |
| 215 | rectUpdate.GetTop(), |
| 216 | rectUpdate.GetRight(), |
| 217 | rectUpdate.GetBottom()); |
| 218 | |
| 219 | #if 0 //def WXDEBUG_SCROLLBAR |
| 220 | static bool s_refreshDebug = false; |
| 221 | if ( s_refreshDebug ) |
| 222 | { |
| 223 | wxClientDC dc(wxConstCast(scrollbar, wxScrollBar)); |
| 224 | dc.SetBrush(*wxRED_BRUSH); |
| 225 | dc.SetPen(*wxTRANSPARENT_PEN); |
| 226 | dc.DrawRectangle(rectUpdate); |
| 227 | |
| 228 | // under Unix we use "--sync" X option for this |
| 229 | #ifdef __WXMSW__ |
| 230 | ::GdiFlush(); |
| 231 | ::Sleep(200); |
| 232 | #endif // __WXMSW__ |
| 233 | } |
| 234 | #endif // WXDEBUG_SCROLLBAR |
| 235 | } |
| 236 | |
| 237 | wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL |
| 238 | : wxHORIZONTAL; |
| 239 | |
| 240 | // the shaft |
| 241 | for ( int nBar = 0; nBar < 2; nBar++ ) |
| 242 | { |
| 243 | wxScrollBar::Element elem = |
| 244 | (wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar); |
| 245 | |
| 246 | wxRect rectBar = scrollbar->GetScrollbarRect(elem); |
| 247 | |
| 248 | if ( rgnUpdate.Contains(rectBar) ) |
| 249 | { |
| 250 | wxLogTrace(_T("scrollbar"), |
| 251 | _T("drawing bar part %d at (%d, %d)-(%d, %d)"), |
| 252 | nBar + 1, |
| 253 | rectBar.GetLeft(), |
| 254 | rectBar.GetTop(), |
| 255 | rectBar.GetRight(), |
| 256 | rectBar.GetBottom()); |
| 257 | |
| 258 | m_renderer->DrawScrollbarShaft(m_dc, |
| 259 | orient, |
| 260 | rectBar, |
| 261 | scrollbar->GetState(elem)); |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | // arrows |
| 266 | for ( int nArrow = 0; nArrow < 2; nArrow++ ) |
| 267 | { |
| 268 | wxScrollBar::Element elem = |
| 269 | (wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow); |
| 270 | |
| 271 | wxRect rectArrow = scrollbar->GetScrollbarRect(elem); |
| 272 | if ( rgnUpdate.Contains(rectArrow) ) |
| 273 | { |
| 274 | wxLogTrace(_T("scrollbar"), |
| 275 | _T("drawing arrow %d at (%d, %d)-(%d, %d)"), |
| 276 | nArrow + 1, |
| 277 | rectArrow.GetLeft(), |
| 278 | rectArrow.GetTop(), |
| 279 | rectArrow.GetRight(), |
| 280 | rectArrow.GetBottom()); |
| 281 | |
| 282 | scrollbar->GetArrows().DrawArrow |
| 283 | ( |
| 284 | (wxScrollArrows::Arrow)nArrow, |
| 285 | m_dc, |
| 286 | rectArrow, |
| 287 | true // draw a scrollbar arrow, not just an arrow |
| 288 | ); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | // TODO: support for page arrows |
| 293 | |
| 294 | // and the thumb |
| 295 | wxScrollBar::Element elem = wxScrollBar::Element_Thumb; |
| 296 | wxRect rectThumb = scrollbar->GetScrollbarRect(elem); |
| 297 | if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) ) |
| 298 | { |
| 299 | wxLogTrace(_T("scrollbar"), |
| 300 | _T("drawing thumb at (%d, %d)-(%d, %d)"), |
| 301 | rectThumb.GetLeft(), |
| 302 | rectThumb.GetTop(), |
| 303 | rectThumb.GetRight(), |
| 304 | rectThumb.GetBottom()); |
| 305 | |
| 306 | m_renderer->DrawScrollbarThumb(m_dc, |
| 307 | orient, |
| 308 | rectThumb, |
| 309 | scrollbar->GetState(elem)); |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | #endif // wxUSE_SCROLLBAR |
| 314 | |
| 315 | void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) |
| 316 | { |
| 317 | wxASSERT_MSG( x1 == x2 || y1 == y2, |
| 318 | _T("line must be either horizontal or vertical") ); |
| 319 | |
| 320 | if ( x1 == x2 ) |
| 321 | m_renderer->DrawVerticalLine(m_dc, x1, y1, y2); |
| 322 | else // horizontal |
| 323 | m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2); |
| 324 | } |
| 325 | |
| 326 | #if wxUSE_LISTBOX |
| 327 | |
| 328 | void wxControlRenderer::DrawItems(const wxListBox *lbox, |
| 329 | size_t itemFirst, size_t itemLast) |
| 330 | { |
| 331 | DoDrawItems(lbox, itemFirst, itemLast); |
| 332 | } |
| 333 | |
| 334 | void wxControlRenderer::DoDrawItems(const wxListBox *lbox, |
| 335 | size_t itemFirst, size_t itemLast, |
| 336 | #if wxUSE_CHECKLISTBOX |
| 337 | bool isCheckLbox |
| 338 | #else |
| 339 | bool WXUNUSED(isCheckLbox) |
| 340 | #endif |
| 341 | ) |
| 342 | { |
| 343 | // prepare for the drawing: calc the initial position |
| 344 | wxCoord lineHeight = lbox->GetLineHeight(); |
| 345 | |
| 346 | // note that SetClippingRegion() needs the physical (unscrolled) |
| 347 | // coordinates while we use the logical (scrolled) ones for the drawing |
| 348 | // itself |
| 349 | wxRect rect; |
| 350 | wxSize size = lbox->GetClientSize(); |
| 351 | rect.width = size.x; |
| 352 | rect.height = size.y; |
| 353 | |
| 354 | // keep the text inside the client rect or we will overwrite the vertical |
| 355 | // scrollbar for the long strings |
| 356 | m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1); |
| 357 | |
| 358 | // adjust the rect position now |
| 359 | lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y); |
| 360 | rect.y += itemFirst*lineHeight; |
| 361 | rect.height = lineHeight; |
| 362 | |
| 363 | // the rect should go to the right visible border so adjust the width if x |
| 364 | // is shifted (rightmost point should stay the same) |
| 365 | rect.width -= rect.x; |
| 366 | |
| 367 | // we'll keep the text colour unchanged |
| 368 | m_dc.SetTextForeground(lbox->GetForegroundColour()); |
| 369 | |
| 370 | // an item should have the focused rect only when the lbox has focus, so |
| 371 | // make sure that we never set wxCONTROL_FOCUSED flag if it doesn't |
| 372 | int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed |
| 373 | ? lbox->GetCurrentItem() |
| 374 | : -1; |
| 375 | for ( size_t n = itemFirst; n < itemLast; n++ ) |
| 376 | { |
| 377 | int flags = 0; |
| 378 | if ( (int)n == itemCurrent ) |
| 379 | flags |= wxCONTROL_FOCUSED; |
| 380 | if ( lbox->IsSelected(n) ) |
| 381 | flags |= wxCONTROL_SELECTED; |
| 382 | |
| 383 | #if wxUSE_CHECKLISTBOX |
| 384 | if ( isCheckLbox ) |
| 385 | { |
| 386 | wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox); |
| 387 | if ( checklstbox->IsChecked(n) ) |
| 388 | flags |= wxCONTROL_CHECKED; |
| 389 | |
| 390 | m_renderer->DrawCheckItem(m_dc, lbox->GetString(n), |
| 391 | wxNullBitmap, |
| 392 | rect, |
| 393 | flags); |
| 394 | } |
| 395 | else |
| 396 | #endif // wxUSE_CHECKLISTBOX |
| 397 | { |
| 398 | m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags); |
| 399 | } |
| 400 | |
| 401 | rect.y += lineHeight; |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | #endif // wxUSE_LISTBOX |
| 406 | |
| 407 | #if wxUSE_CHECKLISTBOX |
| 408 | |
| 409 | void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox, |
| 410 | size_t itemFirst, size_t itemLast) |
| 411 | { |
| 412 | DoDrawItems(lbox, itemFirst, itemLast, true); |
| 413 | } |
| 414 | |
| 415 | #endif // wxUSE_CHECKLISTBOX |
| 416 | |
| 417 | #if wxUSE_GAUGE |
| 418 | |
| 419 | void wxControlRenderer::DrawProgressBar(const wxGauge *gauge) |
| 420 | { |
| 421 | // draw background |
| 422 | m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID)); |
| 423 | m_dc.SetPen(*wxTRANSPARENT_PEN); |
| 424 | m_dc.DrawRectangle(m_rect); |
| 425 | |
| 426 | int max = gauge->GetRange(); |
| 427 | if ( !max ) |
| 428 | { |
| 429 | // nothing to draw |
| 430 | return; |
| 431 | } |
| 432 | |
| 433 | // calc the filled rect |
| 434 | int pos = gauge->GetValue(); |
| 435 | int left = max - pos; |
| 436 | |
| 437 | wxRect rect = m_rect; |
| 438 | rect.Deflate(1); // FIXME this depends on the border width |
| 439 | |
| 440 | wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour() |
| 441 | : wxTHEME_COLOUR(GAUGE); |
| 442 | m_dc.SetBrush(wxBrush(col, wxSOLID)); |
| 443 | |
| 444 | if ( gauge->IsSmooth() ) |
| 445 | { |
| 446 | // just draw the rectangle in one go |
| 447 | if ( gauge->IsVertical() ) |
| 448 | { |
| 449 | // vert bars grow from bottom to top |
| 450 | wxCoord dy = ((rect.height - 1) * left) / max; |
| 451 | rect.y += dy; |
| 452 | rect.height -= dy; |
| 453 | } |
| 454 | else // horizontal |
| 455 | { |
| 456 | // grow from left to right |
| 457 | rect.width -= ((rect.width - 1) * left) / max; |
| 458 | } |
| 459 | |
| 460 | m_dc.DrawRectangle(rect); |
| 461 | } |
| 462 | else // discrete |
| 463 | { |
| 464 | wxSize sizeStep = m_renderer->GetProgressBarStep(); |
| 465 | int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x; |
| 466 | |
| 467 | // we divide by it below! |
| 468 | wxCHECK_RET( step, _T("invalid wxGauge step") ); |
| 469 | |
| 470 | // round up to make the progress appear to start faster |
| 471 | int lenTotal = gauge->IsVertical() ? rect.height : rect.width; |
| 472 | int steps = ((lenTotal + step - 1) * pos) / (max * step); |
| 473 | |
| 474 | // calc the coords of one small rect |
| 475 | wxCoord *px; |
| 476 | wxCoord dx, dy; |
| 477 | if ( gauge->IsVertical() ) |
| 478 | { |
| 479 | // draw from bottom to top: so first set y to the bottom |
| 480 | rect.y += rect.height - 1; |
| 481 | |
| 482 | // then adjust the height |
| 483 | rect.height = step; |
| 484 | |
| 485 | // and then adjust y again to be what it should for the first rect |
| 486 | rect.y -= rect.height; |
| 487 | |
| 488 | // we are going up |
| 489 | step = -step; |
| 490 | |
| 491 | // remember that this will be the coord which will change |
| 492 | px = &rect.y; |
| 493 | |
| 494 | dy = 1; |
| 495 | dx = 0; |
| 496 | } |
| 497 | else // horizontal |
| 498 | { |
| 499 | // don't leave 2 empty pixels in the beginning |
| 500 | rect.x--; |
| 501 | |
| 502 | px = &rect.x; |
| 503 | rect.width = step; |
| 504 | |
| 505 | dy = 0; |
| 506 | dx = 1; |
| 507 | } |
| 508 | |
| 509 | for ( int n = 0; n < steps; n++ ) |
| 510 | { |
| 511 | wxRect rectSegment = rect; |
| 512 | rectSegment.Deflate(dx, dy); |
| 513 | |
| 514 | m_dc.DrawRectangle(rectSegment); |
| 515 | |
| 516 | *px += step; |
| 517 | if ( *px < 1 ) |
| 518 | { |
| 519 | // this can only happen for the last step of vertical gauge |
| 520 | rect.height = *px - step - 1; |
| 521 | *px = 1; |
| 522 | } |
| 523 | else if ( *px > lenTotal - step ) |
| 524 | { |
| 525 | // this can only happen for the last step of horizontal gauge |
| 526 | rect.width = lenTotal - *px - 1; |
| 527 | } |
| 528 | } |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | #endif // wxUSE_GAUGE |