1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "fpdfsdk/include/pdfwindow/PWL_ListBox.h" 8 9 #include "fpdfsdk/include/pdfwindow/PWL_Edit.h" 10 #include "fpdfsdk/include/pdfwindow/PWL_EditCtrl.h" 11 #include "fpdfsdk/include/pdfwindow/PWL_ScrollBar.h" 12 #include "fpdfsdk/include/pdfwindow/PWL_Utils.h" 13 #include "fpdfsdk/include/pdfwindow/PWL_Wnd.h" 14 #include "public/fpdf_fwlevent.h" 15 16 #define IsFloatZero(f) ((f) < 0.0001 && (f) > -0.0001) 17 #define IsFloatBigger(fa, fb) ((fa) > (fb) && !IsFloatZero((fa) - (fb))) 18 #define IsFloatSmaller(fa, fb) ((fa) < (fb) && !IsFloatZero((fa) - (fb))) 19 #define IsFloatEqual(fa, fb) IsFloatZero((fa) - (fb)) 20 21 CPWL_List_Notify::CPWL_List_Notify(CPWL_ListBox* pList) : m_pList(pList) { 22 ASSERT(m_pList); 23 } 24 25 CPWL_List_Notify::~CPWL_List_Notify() {} 26 27 void CPWL_List_Notify::IOnSetScrollInfoY(FX_FLOAT fPlateMin, 28 FX_FLOAT fPlateMax, 29 FX_FLOAT fContentMin, 30 FX_FLOAT fContentMax, 31 FX_FLOAT fSmallStep, 32 FX_FLOAT fBigStep) { 33 PWL_SCROLL_INFO Info; 34 35 Info.fPlateWidth = fPlateMax - fPlateMin; 36 Info.fContentMin = fContentMin; 37 Info.fContentMax = fContentMax; 38 Info.fSmallStep = fSmallStep; 39 Info.fBigStep = fBigStep; 40 41 m_pList->OnNotify(m_pList, PNM_SETSCROLLINFO, SBT_VSCROLL, (intptr_t)&Info); 42 43 if (CPWL_ScrollBar* pScroll = m_pList->GetVScrollBar()) { 44 if (IsFloatBigger(Info.fPlateWidth, Info.fContentMax - Info.fContentMin) || 45 IsFloatEqual(Info.fPlateWidth, Info.fContentMax - Info.fContentMin)) { 46 if (pScroll->IsVisible()) { 47 pScroll->SetVisible(FALSE); 48 m_pList->RePosChildWnd(); 49 } 50 } else { 51 if (!pScroll->IsVisible()) { 52 pScroll->SetVisible(TRUE); 53 m_pList->RePosChildWnd(); 54 } 55 } 56 } 57 } 58 59 void CPWL_List_Notify::IOnSetScrollPosY(FX_FLOAT fy) { 60 m_pList->OnNotify(m_pList, PNM_SETSCROLLPOS, SBT_VSCROLL, (intptr_t)&fy); 61 } 62 63 void CPWL_List_Notify::IOnInvalidateRect(CPDF_Rect* pRect) { 64 m_pList->InvalidateRect(pRect); 65 } 66 67 CPWL_ListBox::CPWL_ListBox() 68 : m_pList(NULL), 69 m_pListNotify(NULL), 70 m_bMouseDown(FALSE), 71 m_bHoverSel(FALSE), 72 m_pFillerNotify(NULL) { 73 m_pList = IFX_List::NewList(); 74 } 75 76 CPWL_ListBox::~CPWL_ListBox() { 77 IFX_List::DelList(m_pList); 78 delete m_pListNotify; 79 m_pListNotify = NULL; 80 } 81 82 CFX_ByteString CPWL_ListBox::GetClassName() const { 83 return "CPWL_ListBox"; 84 } 85 86 void CPWL_ListBox::OnCreated() { 87 if (m_pList) { 88 delete m_pListNotify; 89 90 m_pList->SetFontMap(GetFontMap()); 91 m_pList->SetNotify(m_pListNotify = new CPWL_List_Notify(this)); 92 93 SetHoverSel(HasFlag(PLBS_HOVERSEL)); 94 m_pList->SetMultipleSel(HasFlag(PLBS_MULTIPLESEL)); 95 m_pList->SetFontSize(GetCreationParam().fFontSize); 96 97 m_bHoverSel = HasFlag(PLBS_HOVERSEL); 98 } 99 } 100 101 void CPWL_ListBox::OnDestroy() { 102 delete m_pListNotify; 103 m_pListNotify = NULL; 104 } 105 106 void CPWL_ListBox::GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) { 107 CPWL_Wnd::GetThisAppearanceStream(sAppStream); 108 109 CFX_ByteTextBuf sListItems; 110 111 if (m_pList) { 112 CPDF_Rect rcPlate = m_pList->GetPlateRect(); 113 for (int32_t i = 0, sz = m_pList->GetCount(); i < sz; i++) { 114 CPDF_Rect rcItem = m_pList->GetItemRect(i); 115 116 if (rcItem.bottom > rcPlate.top || rcItem.top < rcPlate.bottom) 117 continue; 118 119 CPDF_Point ptOffset(rcItem.left, (rcItem.top + rcItem.bottom) * 0.5f); 120 if (m_pList->IsItemSelected(i)) { 121 sListItems << CPWL_Utils::GetRectFillAppStream( 122 rcItem, PWL_DEFAULT_SELBACKCOLOR); 123 CFX_ByteString sItem = 124 CPWL_Utils::GetEditAppStream(m_pList->GetItemEdit(i), ptOffset); 125 if (sItem.GetLength() > 0) { 126 sListItems << "BT\n" 127 << CPWL_Utils::GetColorAppStream(PWL_DEFAULT_SELTEXTCOLOR) 128 << sItem << "ET\n"; 129 } 130 } else { 131 CFX_ByteString sItem = 132 CPWL_Utils::GetEditAppStream(m_pList->GetItemEdit(i), ptOffset); 133 if (sItem.GetLength() > 0) { 134 sListItems << "BT\n" << CPWL_Utils::GetColorAppStream(GetTextColor()) 135 << sItem << "ET\n"; 136 } 137 } 138 } 139 } 140 141 if (sListItems.GetLength() > 0) { 142 CFX_ByteTextBuf sClip; 143 CPDF_Rect rcClient = GetClientRect(); 144 145 sClip << "q\n"; 146 sClip << rcClient.left << " " << rcClient.bottom << " " 147 << rcClient.right - rcClient.left << " " 148 << rcClient.top - rcClient.bottom << " re W n\n"; 149 150 sClip << sListItems << "Q\n"; 151 152 sAppStream << "/Tx BMC\n" << sClip << "EMC\n"; 153 } 154 } 155 156 void CPWL_ListBox::DrawThisAppearance(CFX_RenderDevice* pDevice, 157 CFX_Matrix* pUser2Device) { 158 CPWL_Wnd::DrawThisAppearance(pDevice, pUser2Device); 159 160 if (m_pList) { 161 CPDF_Rect rcPlate = m_pList->GetPlateRect(); 162 CPDF_Rect rcList = GetListRect(); 163 CPDF_Rect rcClient = GetClientRect(); 164 165 for (int32_t i = 0, sz = m_pList->GetCount(); i < sz; i++) { 166 CPDF_Rect rcItem = m_pList->GetItemRect(i); 167 if (rcItem.bottom > rcPlate.top || rcItem.top < rcPlate.bottom) 168 continue; 169 170 CPDF_Point ptOffset(rcItem.left, (rcItem.top + rcItem.bottom) * 0.5f); 171 if (IFX_Edit* pEdit = m_pList->GetItemEdit(i)) { 172 CPDF_Rect rcContent = pEdit->GetContentRect(); 173 if (rcContent.Width() > rcClient.Width()) 174 rcItem.Intersect(rcList); 175 else 176 rcItem.Intersect(rcClient); 177 } 178 179 if (m_pList->IsItemSelected(i)) { 180 IFX_SystemHandler* pSysHandler = GetSystemHandler(); 181 if (pSysHandler && pSysHandler->IsSelectionImplemented()) { 182 IFX_Edit::DrawEdit( 183 pDevice, pUser2Device, m_pList->GetItemEdit(i), 184 CPWL_Utils::PWLColorToFXColor(GetTextColor()), 185 CPWL_Utils::PWLColorToFXColor(GetTextStrokeColor()), rcList, 186 ptOffset, NULL, pSysHandler, m_pFormFiller); 187 pSysHandler->OutputSelectedRect(m_pFormFiller, rcItem); 188 } else { 189 CPWL_Utils::DrawFillRect(pDevice, pUser2Device, rcItem, 190 ArgbEncode(255, 0, 51, 113)); 191 IFX_Edit::DrawEdit(pDevice, pUser2Device, m_pList->GetItemEdit(i), 192 ArgbEncode(255, 255, 255, 255), 0, rcList, 193 ptOffset, NULL, pSysHandler, m_pFormFiller); 194 } 195 } else { 196 IFX_SystemHandler* pSysHandler = GetSystemHandler(); 197 IFX_Edit::DrawEdit(pDevice, pUser2Device, m_pList->GetItemEdit(i), 198 CPWL_Utils::PWLColorToFXColor(GetTextColor()), 199 CPWL_Utils::PWLColorToFXColor(GetTextStrokeColor()), 200 rcList, ptOffset, NULL, pSysHandler, NULL); 201 } 202 } 203 } 204 } 205 206 FX_BOOL CPWL_ListBox::OnKeyDown(FX_WORD nChar, FX_DWORD nFlag) { 207 CPWL_Wnd::OnKeyDown(nChar, nFlag); 208 209 if (!m_pList) 210 return FALSE; 211 212 switch (nChar) { 213 default: 214 return FALSE; 215 case FWL_VKEY_Up: 216 case FWL_VKEY_Down: 217 case FWL_VKEY_Home: 218 case FWL_VKEY_Left: 219 case FWL_VKEY_End: 220 case FWL_VKEY_Right: 221 break; 222 } 223 224 switch (nChar) { 225 case FWL_VKEY_Up: 226 m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 227 break; 228 case FWL_VKEY_Down: 229 m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 230 break; 231 case FWL_VKEY_Home: 232 m_pList->OnVK_HOME(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 233 break; 234 case FWL_VKEY_Left: 235 m_pList->OnVK_LEFT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 236 break; 237 case FWL_VKEY_End: 238 m_pList->OnVK_END(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 239 break; 240 case FWL_VKEY_Right: 241 m_pList->OnVK_RIGHT(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 242 break; 243 case FWL_VKEY_Delete: 244 break; 245 } 246 247 FX_BOOL bExit = FALSE; 248 OnNotifySelChanged(TRUE, bExit, nFlag); 249 250 return TRUE; 251 } 252 253 FX_BOOL CPWL_ListBox::OnChar(FX_WORD nChar, FX_DWORD nFlag) { 254 CPWL_Wnd::OnChar(nChar, nFlag); 255 256 if (!m_pList) 257 return FALSE; 258 259 if (!m_pList->OnChar(nChar, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag))) 260 return FALSE; 261 262 FX_BOOL bExit = FALSE; 263 OnNotifySelChanged(TRUE, bExit, nFlag); 264 265 return TRUE; 266 } 267 268 FX_BOOL CPWL_ListBox::OnLButtonDown(const CPDF_Point& point, FX_DWORD nFlag) { 269 CPWL_Wnd::OnLButtonDown(point, nFlag); 270 271 if (ClientHitTest(point)) { 272 m_bMouseDown = TRUE; 273 SetFocus(); 274 SetCapture(); 275 276 if (m_pList) 277 m_pList->OnMouseDown(point, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 278 } 279 280 return TRUE; 281 } 282 283 FX_BOOL CPWL_ListBox::OnLButtonUp(const CPDF_Point& point, FX_DWORD nFlag) { 284 CPWL_Wnd::OnLButtonUp(point, nFlag); 285 286 if (m_bMouseDown) { 287 ReleaseCapture(); 288 m_bMouseDown = FALSE; 289 } 290 291 FX_BOOL bExit = FALSE; 292 OnNotifySelChanged(FALSE, bExit, nFlag); 293 294 return TRUE; 295 } 296 297 void CPWL_ListBox::SetHoverSel(FX_BOOL bHoverSel) { 298 m_bHoverSel = bHoverSel; 299 } 300 301 FX_BOOL CPWL_ListBox::OnMouseMove(const CPDF_Point& point, FX_DWORD nFlag) { 302 CPWL_Wnd::OnMouseMove(point, nFlag); 303 304 if (m_bHoverSel && !IsCaptureMouse() && ClientHitTest(point)) { 305 if (m_pList) 306 m_pList->Select(m_pList->GetItemIndex(point)); 307 } 308 309 if (m_bMouseDown) { 310 if (m_pList) 311 m_pList->OnMouseMove(point, IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 312 } 313 314 return TRUE; 315 } 316 317 void CPWL_ListBox::OnNotify(CPWL_Wnd* pWnd, 318 FX_DWORD msg, 319 intptr_t wParam, 320 intptr_t lParam) { 321 CPWL_Wnd::OnNotify(pWnd, msg, wParam, lParam); 322 323 FX_FLOAT fPos; 324 325 switch (msg) { 326 case PNM_SETSCROLLINFO: 327 switch (wParam) { 328 case SBT_VSCROLL: 329 if (CPWL_Wnd* pChild = GetVScrollBar()) { 330 pChild->OnNotify(pWnd, PNM_SETSCROLLINFO, wParam, lParam); 331 } 332 break; 333 } 334 break; 335 case PNM_SETSCROLLPOS: 336 switch (wParam) { 337 case SBT_VSCROLL: 338 if (CPWL_Wnd* pChild = GetVScrollBar()) { 339 pChild->OnNotify(pWnd, PNM_SETSCROLLPOS, wParam, lParam); 340 } 341 break; 342 } 343 break; 344 case PNM_SCROLLWINDOW: 345 fPos = *(FX_FLOAT*)lParam; 346 switch (wParam) { 347 case SBT_VSCROLL: 348 if (m_pList) 349 m_pList->SetScrollPos(CPDF_Point(0, fPos)); 350 break; 351 } 352 break; 353 } 354 } 355 356 void CPWL_ListBox::KillFocus() { 357 CPWL_Wnd::KillFocus(); 358 } 359 360 void CPWL_ListBox::RePosChildWnd() { 361 CPWL_Wnd::RePosChildWnd(); 362 363 if (m_pList) 364 m_pList->SetPlateRect(GetListRect()); 365 } 366 367 void CPWL_ListBox::OnNotifySelChanged(FX_BOOL bKeyDown, 368 FX_BOOL& bExit, 369 FX_DWORD nFlag) { 370 if (!m_pFillerNotify) 371 return; 372 373 FX_BOOL bRC = TRUE; 374 CFX_WideString swChange = GetText(); 375 CFX_WideString strChangeEx; 376 int nSelStart = 0; 377 int nSelEnd = swChange.GetLength(); 378 m_pFillerNotify->OnBeforeKeyStroke(GetAttachedData(), swChange, strChangeEx, 379 nSelStart, nSelEnd, bKeyDown, bRC, bExit, 380 nFlag); 381 } 382 383 CPDF_Rect CPWL_ListBox::GetFocusRect() const { 384 if (m_pList && m_pList->IsMultipleSel()) { 385 CPDF_Rect rcCaret = m_pList->GetItemRect(m_pList->GetCaret()); 386 rcCaret.Intersect(GetClientRect()); 387 return rcCaret; 388 } 389 390 return CPWL_Wnd::GetFocusRect(); 391 } 392 393 void CPWL_ListBox::AddString(const FX_WCHAR* string) { 394 if (m_pList) { 395 m_pList->AddString(string); 396 } 397 } 398 399 CFX_WideString CPWL_ListBox::GetText() const { 400 if (m_pList) 401 return m_pList->GetText(); 402 403 return L""; 404 } 405 406 void CPWL_ListBox::SetFontSize(FX_FLOAT fFontSize) { 407 if (m_pList) 408 m_pList->SetFontSize(fFontSize); 409 } 410 411 FX_FLOAT CPWL_ListBox::GetFontSize() const { 412 if (m_pList) 413 return m_pList->GetFontSize(); 414 return 0.0f; 415 } 416 417 void CPWL_ListBox::Select(int32_t nItemIndex) { 418 if (m_pList) 419 m_pList->Select(nItemIndex); 420 } 421 422 void CPWL_ListBox::SetCaret(int32_t nItemIndex) { 423 if (m_pList) 424 m_pList->SetCaret(nItemIndex); 425 } 426 427 void CPWL_ListBox::SetTopVisibleIndex(int32_t nItemIndex) { 428 if (m_pList) 429 m_pList->SetTopItem(nItemIndex); 430 } 431 432 void CPWL_ListBox::ScrollToListItem(int32_t nItemIndex) { 433 if (m_pList) 434 m_pList->ScrollToListItem(nItemIndex); 435 } 436 437 void CPWL_ListBox::ResetContent() { 438 if (m_pList) 439 m_pList->Empty(); 440 } 441 442 void CPWL_ListBox::Reset() { 443 if (m_pList) 444 m_pList->Cancel(); 445 } 446 447 FX_BOOL CPWL_ListBox::IsMultipleSel() const { 448 if (m_pList) 449 return m_pList->IsMultipleSel(); 450 451 return FALSE; 452 } 453 454 int32_t CPWL_ListBox::GetCaretIndex() const { 455 if (m_pList) 456 return m_pList->GetCaret(); 457 458 return -1; 459 } 460 461 int32_t CPWL_ListBox::GetCurSel() const { 462 if (m_pList) 463 return m_pList->GetSelect(); 464 465 return -1; 466 } 467 468 FX_BOOL CPWL_ListBox::IsItemSelected(int32_t nItemIndex) const { 469 if (m_pList) 470 return m_pList->IsItemSelected(nItemIndex); 471 472 return FALSE; 473 } 474 475 int32_t CPWL_ListBox::GetTopVisibleIndex() const { 476 if (m_pList) { 477 m_pList->ScrollToListItem(m_pList->GetFirstSelected()); 478 return m_pList->GetTopItem(); 479 } 480 481 return -1; 482 } 483 484 int32_t CPWL_ListBox::GetCount() const { 485 if (m_pList) 486 return m_pList->GetCount(); 487 488 return 0; 489 } 490 491 int32_t CPWL_ListBox::FindNext(int32_t nIndex, FX_WCHAR nChar) const { 492 if (m_pList) 493 return m_pList->FindNext(nIndex, nChar); 494 495 return nIndex; 496 } 497 498 CPDF_Rect CPWL_ListBox::GetContentRect() const { 499 if (m_pList) 500 return m_pList->GetContentRect(); 501 502 return CPDF_Rect(); 503 } 504 505 FX_FLOAT CPWL_ListBox::GetFirstHeight() const { 506 if (m_pList) 507 return m_pList->GetFirstHeight(); 508 509 return 0.0f; 510 } 511 512 CPDF_Rect CPWL_ListBox::GetListRect() const { 513 return CPWL_Utils::DeflateRect( 514 GetWindowRect(), (FX_FLOAT)(GetBorderWidth() + GetInnerBorderWidth())); 515 } 516 517 FX_BOOL CPWL_ListBox::OnMouseWheel(short zDelta, 518 const CPDF_Point& point, 519 FX_DWORD nFlag) { 520 if (!m_pList) 521 return FALSE; 522 523 if (zDelta < 0) { 524 m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 525 } else { 526 m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag)); 527 } 528 529 FX_BOOL bExit = FALSE; 530 OnNotifySelChanged(FALSE, bExit, nFlag); 531 return TRUE; 532 } 533
