f5c8a815d4ef973f8329a0f3c96a42d4faa8aa01
[pdfium.git] / fpdfsdk / src / pdfwindow / PWL_ComboBox.cpp
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 "../../include/pdfwindow/PDFWindow.h"
8 #include "../../include/pdfwindow/PWL_Wnd.h"
9 #include "../../include/pdfwindow/PWL_EditCtrl.h"
10 #include "../../include/pdfwindow/PWL_Edit.h"
11 #include "../../include/pdfwindow/PWL_ListBox.h"
12 #include "../../include/pdfwindow/PWL_ComboBox.h"
13 #include "../../include/pdfwindow/PWL_Utils.h"
14
15 #define PWLCB_DEFAULTFONTSIZE  12.0f
16
17 #define IsFloatZero(f)                      ((f) < 0.0001 && (f) > -0.0001)
18 #define IsFloatBigger(fa,fb)                ((fa) > (fb) && !IsFloatZero((fa) - (fb)))
19 #define IsFloatSmaller(fa,fb)               ((fa) < (fb) && !IsFloatZero((fa) - (fb)))
20 #define IsFloatEqual(fa,fb)                 IsFloatZero((fa)-(fb))
21
22
23 /* ---------------------------- CPWL_CBListBox ---------------------------- */
24
25 FX_BOOL CPWL_CBListBox::OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag)
26 {
27     CPWL_Wnd::OnLButtonUp(point,nFlag);
28
29     if (m_bMouseDown)
30     {
31         ReleaseCapture();
32         m_bMouseDown = FALSE;
33
34         if (ClientHitTest(point))
35         {
36             if (CPWL_Wnd * pParent = GetParentWindow())
37             {
38                 pParent->OnNotify(this,PNM_LBUTTONUP,0,PWL_MAKEDWORD(point.x,point.y));
39             }
40
41             FX_BOOL bExit = FALSE;
42             OnNotifySelChanged(FALSE,bExit, nFlag);
43             if (bExit) return FALSE;
44         }
45     }
46
47     return TRUE;
48 }
49
50 FX_BOOL CPWL_CBListBox::OnKeyDownWithExit(FX_WORD nChar, FX_BOOL & bExit, FX_DWORD nFlag)
51 {
52     if (!m_pList) return FALSE;
53
54     switch (nChar)
55     {
56     default:
57         return FALSE;
58     case FWL_VKEY_Up:
59     case FWL_VKEY_Down:
60     case FWL_VKEY_Home:
61     case FWL_VKEY_Left:
62     case FWL_VKEY_End:
63     case FWL_VKEY_Right:
64         break;
65     }
66
67     switch (nChar)
68     {
69     case FWL_VKEY_Up:
70         m_pList->OnVK_UP(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
71         break;
72     case FWL_VKEY_Down:
73         m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
74         break;
75     case FWL_VKEY_Home:
76         m_pList->OnVK_HOME(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
77         break;
78     case FWL_VKEY_Left:
79         m_pList->OnVK_LEFT(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
80         break;
81     case FWL_VKEY_End:
82         m_pList->OnVK_END(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
83         break;
84     case FWL_VKEY_Right:
85         m_pList->OnVK_RIGHT(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
86         break;
87     case FWL_VKEY_Delete:
88         break;
89     }
90
91     OnNotifySelChanged(TRUE,bExit, nFlag);
92
93     return TRUE;
94 }
95
96 FX_BOOL CPWL_CBListBox::OnCharWithExit(FX_WORD nChar, FX_BOOL & bExit, FX_DWORD nFlag)
97 {
98     if (!m_pList) return FALSE;
99
100     if (!m_pList->OnChar(nChar,IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag))) return FALSE;
101
102     if (CPWL_ComboBox* pComboBox = (CPWL_ComboBox*)GetParentWindow())
103     {
104         pComboBox->SetSelectText();
105     }
106
107     OnNotifySelChanged(TRUE,bExit,nFlag);
108
109     return TRUE;
110 }
111
112 /* ---------------------------- CPWL_CBButton ---------------------------- */
113
114 void CPWL_CBButton::GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream)
115 {
116     CPWL_Wnd::GetThisAppearanceStream(sAppStream);
117
118     CPDF_Rect rectWnd = CPWL_Wnd::GetWindowRect();
119
120     if (IsVisible() && !rectWnd.IsEmpty())
121     {
122         CFX_ByteTextBuf sButton;
123
124         CPDF_Point ptCenter = GetCenterPoint();
125
126         CPDF_Point pt1(ptCenter.x - PWL_CBBUTTON_TRIANGLE_HALFLEN,ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
127         CPDF_Point pt2(ptCenter.x + PWL_CBBUTTON_TRIANGLE_HALFLEN,ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
128         CPDF_Point pt3(ptCenter.x,ptCenter.y - PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
129
130         if (IsFloatBigger(rectWnd.right - rectWnd.left,PWL_CBBUTTON_TRIANGLE_HALFLEN * 2)
131             &&
132             IsFloatBigger(rectWnd.top - rectWnd.bottom,PWL_CBBUTTON_TRIANGLE_HALFLEN)
133             )
134         {
135             sButton << "0 g\n";
136             sButton << pt1.x << " " << pt1.y << " m\n";
137             sButton << pt2.x << " " << pt2.y << " l\n";
138             sButton << pt3.x << " " << pt3.y << " l\n";
139             sButton << pt1.x << " " << pt1.y << " l f\n";
140
141             sAppStream << "q\n" << sButton << "Q\n";
142         }
143     }
144 }
145
146 void CPWL_CBButton::DrawThisAppearance(CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device)
147 {
148     CPWL_Wnd::DrawThisAppearance(pDevice,pUser2Device);
149
150     CPDF_Rect rectWnd = CPWL_Wnd::GetWindowRect();
151
152     if (IsVisible() && !rectWnd.IsEmpty())
153     {
154         CPDF_Point ptCenter = GetCenterPoint();
155
156         CPDF_Point pt1(ptCenter.x - PWL_CBBUTTON_TRIANGLE_HALFLEN,ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
157         CPDF_Point pt2(ptCenter.x + PWL_CBBUTTON_TRIANGLE_HALFLEN,ptCenter.y + PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
158         CPDF_Point pt3(ptCenter.x,ptCenter.y - PWL_CBBUTTON_TRIANGLE_HALFLEN * 0.5f);
159
160         if (IsFloatBigger(rectWnd.right - rectWnd.left,PWL_CBBUTTON_TRIANGLE_HALFLEN * 2)
161             &&
162             IsFloatBigger(rectWnd.top - rectWnd.bottom,PWL_CBBUTTON_TRIANGLE_HALFLEN)
163             )
164         {
165             CFX_PathData path;
166
167             path.SetPointCount(4);
168             path.SetPoint(0, pt1.x, pt1.y, FXPT_MOVETO);
169             path.SetPoint(1, pt2.x, pt2.y, FXPT_LINETO);
170             path.SetPoint(2, pt3.x, pt3.y, FXPT_LINETO);
171             path.SetPoint(3, pt1.x, pt1.y, FXPT_LINETO);
172
173             pDevice->DrawPath(&path, pUser2Device, NULL,
174                 CPWL_Utils::PWLColorToFXColor(PWL_DEFAULT_BLACKCOLOR,GetTransparency()),
175                 0, FXFILL_ALTERNATE);
176         }
177     }
178 }
179
180 FX_BOOL CPWL_CBButton::OnLButtonDown(const CPDF_Point & point, FX_DWORD nFlag)
181 {
182     CPWL_Wnd::OnLButtonDown(point,nFlag);
183
184     SetCapture();
185
186     if (CPWL_Wnd * pParent = GetParentWindow())
187     {
188         pParent->OnNotify(this,PNM_LBUTTONDOWN,0,PWL_MAKEDWORD(point.x,point.y));
189     }
190
191     return TRUE;
192 }
193
194 FX_BOOL CPWL_CBButton::OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag)
195 {
196     CPWL_Wnd::OnLButtonUp(point, nFlag);
197
198     ReleaseCapture();
199
200     return TRUE;
201 }
202
203 /* ---------------------------- CPWL_ComboBox ---------------------------- */
204
205 CPWL_ComboBox::CPWL_ComboBox() : m_pEdit(NULL),
206     m_pButton(NULL),
207     m_pList(NULL),
208     m_bPopup(FALSE),
209     m_nPopupWhere(0),
210     m_nSelectItem(-1),
211     m_pFillerNotify(NULL)
212 {
213 }
214
215 CFX_ByteString CPWL_ComboBox::GetClassName() const
216 {
217     return "CPWL_ComboBox";
218 }
219
220 void CPWL_ComboBox::OnCreate(PWL_CREATEPARAM & cp)
221 {
222     cp.dwFlags &= ~PWS_HSCROLL;
223     cp.dwFlags &= ~PWS_VSCROLL;
224 }
225
226 void CPWL_ComboBox::SetFocus()
227 {
228     if (m_pEdit)
229         m_pEdit->SetFocus();
230 }
231
232 void CPWL_ComboBox::KillFocus()
233 {
234     SetPopup(FALSE);
235     CPWL_Wnd::KillFocus();
236 }
237
238 CFX_WideString CPWL_ComboBox::GetText() const
239 {
240     if (m_pEdit)
241     {
242         return m_pEdit->GetText();
243     }
244     return CFX_WideString();
245 }
246
247 void CPWL_ComboBox::SetText(const FX_WCHAR* text)
248 {
249     if (m_pEdit)
250         m_pEdit->SetText(text);
251 }
252
253 void CPWL_ComboBox::AddString(const FX_WCHAR* string)
254 {
255     if (m_pList)
256         m_pList->AddString(string);
257 }
258
259 int32_t CPWL_ComboBox::GetSelect() const
260 {
261     return m_nSelectItem;
262 }
263
264 void CPWL_ComboBox::SetSelect(int32_t nItemIndex)
265 {
266     if (m_pList)
267         m_pList->Select(nItemIndex);
268
269     m_pEdit->SetText(m_pList->GetText().c_str());
270
271     m_nSelectItem = nItemIndex;
272 }
273
274 void CPWL_ComboBox::SetEditSel(int32_t nStartChar,int32_t nEndChar)
275 {
276     if (m_pEdit)
277     {
278         m_pEdit->SetSel(nStartChar,nEndChar);
279     }
280 }
281
282 void CPWL_ComboBox::GetEditSel(int32_t & nStartChar, int32_t & nEndChar) const
283 {
284     nStartChar = -1;
285     nEndChar = -1;
286
287     if (m_pEdit)
288     {
289         m_pEdit->GetSel(nStartChar,nEndChar);
290     }
291 }
292
293 void CPWL_ComboBox::Clear()
294 {
295     if (m_pEdit)
296     {
297         m_pEdit->Clear();
298     }
299 }
300
301 void CPWL_ComboBox::CreateChildWnd(const PWL_CREATEPARAM & cp)
302 {
303     CreateEdit(cp);
304     CreateButton(cp);
305     CreateListBox(cp);
306 }
307
308 void CPWL_ComboBox::CreateEdit(const PWL_CREATEPARAM & cp)
309 {
310     if (!m_pEdit)
311     {
312         m_pEdit = new CPWL_CBEdit;
313         m_pEdit->AttachFFLData(m_pFormFiller);
314
315         PWL_CREATEPARAM ecp = cp;
316         ecp.pParentWnd = this;
317         ecp.dwFlags =  PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PES_CENTER | PES_AUTOSCROLL | PES_UNDO;
318
319         if (HasFlag(PWS_AUTOFONTSIZE))
320             ecp.dwFlags |= PWS_AUTOFONTSIZE;
321
322         if (!HasFlag(PCBS_ALLOWCUSTOMTEXT))
323             ecp.dwFlags |= PWS_READONLY;
324
325         ecp.rcRectWnd = CPDF_Rect(0,0,0,0);
326         ecp.dwBorderWidth = 0;
327         ecp.nBorderStyle = PBS_SOLID;
328
329         m_pEdit->Create(ecp);
330     }
331 }
332
333 void CPWL_ComboBox::CreateButton(const PWL_CREATEPARAM & cp)
334 {
335     if (!m_pButton)
336     {
337         m_pButton = new CPWL_CBButton;
338
339         PWL_CREATEPARAM bcp = cp;
340         bcp.pParentWnd = this;
341         bcp.dwFlags = PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PWS_BACKGROUND;
342         bcp.sBackgroundColor = PWL_SCROLLBAR_BKCOLOR;
343         bcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
344         bcp.dwBorderWidth = 2;
345         bcp.nBorderStyle = PBS_BEVELED;
346         bcp.eCursorType = FXCT_ARROW;
347
348         m_pButton->Create(bcp);
349     }
350 }
351
352 void CPWL_ComboBox::CreateListBox(const PWL_CREATEPARAM & cp)
353 {
354     if (!m_pList)
355     {
356         m_pList = new CPWL_CBListBox;
357         m_pList->AttachFFLData(m_pFormFiller);
358         PWL_CREATEPARAM lcp = cp;
359         lcp.pParentWnd = this;
360         lcp.dwFlags = PWS_CHILD | PWS_BORDER | PWS_BACKGROUND | PLBS_HOVERSEL | PWS_VSCROLL;
361         lcp.nBorderStyle = PBS_SOLID;
362         lcp.dwBorderWidth = 1;
363         lcp.eCursorType = FXCT_ARROW;
364         lcp.rcRectWnd = CPDF_Rect(0,0,0,0);
365
366         if (cp.dwFlags & PWS_AUTOFONTSIZE)
367             lcp.fFontSize = PWLCB_DEFAULTFONTSIZE;
368         else
369             lcp.fFontSize = cp.fFontSize;
370
371         if (cp.sBorderColor.nColorType == COLORTYPE_TRANSPARENT)
372             lcp.sBorderColor = PWL_DEFAULT_BLACKCOLOR;
373
374         if (cp.sBackgroundColor.nColorType == COLORTYPE_TRANSPARENT)
375             lcp.sBackgroundColor = PWL_DEFAULT_WHITECOLOR;
376
377         m_pList->Create(lcp);
378     }
379 }
380
381 void CPWL_ComboBox::RePosChildWnd()
382 {
383     CPDF_Rect rcClient = GetClientRect();
384
385     if (m_bPopup)
386     {
387         CPDF_Rect rclient = GetClientRect();
388         CPDF_Rect rcButton = rclient;
389         CPDF_Rect rcEdit = rcClient;
390         CPDF_Rect rcList = CPWL_Wnd::GetWindowRect();
391
392         FX_FLOAT fOldWindowHeight = m_rcOldWindow.Height();
393         FX_FLOAT fOldClientHeight = fOldWindowHeight - GetBorderWidth() * 2;
394
395         switch (m_nPopupWhere)
396         {
397         case 0:
398             rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
399
400             if (rcButton.left < rclient.left)
401                 rcButton.left = rclient.left;
402
403             rcButton.bottom = rcButton.top - fOldClientHeight;
404
405             rcEdit.right = rcButton.left - 1.0f;
406
407             if (rcEdit.left < rclient.left)
408                 rcEdit.left = rclient.left;
409
410             if (rcEdit.right < rcEdit.left)
411                 rcEdit.right = rcEdit.left;
412
413             rcEdit.bottom = rcEdit.top - fOldClientHeight;
414
415             rcList.top -= fOldWindowHeight;
416
417             break;
418         case 1:
419             rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
420
421             if (rcButton.left < rclient.left)
422                 rcButton.left = rclient.left;
423
424             rcButton.top = rcButton.bottom + fOldClientHeight;
425
426             rcEdit.right = rcButton.left - 1.0f;
427
428             if (rcEdit.left < rclient.left)
429                 rcEdit.left = rclient.left;
430
431             if (rcEdit.right < rcEdit.left)
432                 rcEdit.right = rcEdit.left;
433
434             rcEdit.top = rcEdit.bottom + fOldClientHeight;
435
436             rcList.bottom += fOldWindowHeight;
437
438             break;
439         }
440
441         if (m_pButton)
442             m_pButton->Move(rcButton,TRUE,FALSE);
443
444         if (m_pEdit)
445             m_pEdit->Move(rcEdit,TRUE,FALSE);
446
447         if (m_pList)
448         {
449             m_pList->SetVisible(TRUE);
450             m_pList->Move(rcList,TRUE,FALSE);
451             m_pList->ScrollToListItem(m_nSelectItem);
452         }
453     }
454     else
455     {
456         CPDF_Rect rcButton = rcClient;
457
458         rcButton.left = rcButton.right - PWL_COMBOBOX_BUTTON_WIDTH;
459
460         if (rcButton.left < rcClient.left)
461             rcButton.left = rcClient.left;
462
463         if (m_pButton)
464             m_pButton->Move(rcButton,TRUE,FALSE);
465
466         CPDF_Rect rcEdit = rcClient;
467         rcEdit.right = rcButton.left - 1.0f;
468
469         if (rcEdit.left < rcClient.left)
470             rcEdit.left = rcClient.left;
471
472         if (rcEdit.right < rcEdit.left)
473             rcEdit.right = rcEdit.left;
474
475         if (m_pEdit)
476             m_pEdit->Move(rcEdit,TRUE,FALSE);
477
478         if (m_pList)
479             m_pList->SetVisible(FALSE);
480     }
481 }
482
483 void CPWL_ComboBox::SelectAll()
484 {
485     if (m_pEdit && HasFlag(PCBS_ALLOWCUSTOMTEXT))
486         m_pEdit->SelectAll();
487 }
488
489 CPDF_Rect CPWL_ComboBox::GetFocusRect() const
490 {
491     return CPDF_Rect();
492 }
493
494 void CPWL_ComboBox::SetPopup(FX_BOOL bPopup)
495 {
496     if (!m_pList) return;
497     if (bPopup == m_bPopup) return;
498     FX_FLOAT fListHeight = m_pList->GetContentRect().Height();
499     if (!IsFloatBigger(fListHeight,0.0f)) return;
500
501     if (bPopup)
502     {
503         if (m_pFillerNotify)
504         {
505             int32_t nWhere = 0;
506             FX_FLOAT fPopupRet = 0.0f;
507             FX_FLOAT fPopupMin = 0.0f;
508             if (m_pList->GetCount() > 3)
509                 fPopupMin = m_pList->GetFirstHeight() * 3 + m_pList->GetBorderWidth() * 2;
510             FX_FLOAT fPopupMax = fListHeight + m_pList->GetBorderWidth() * 2;
511             m_pFillerNotify->QueryWherePopup(GetAttachedData(), fPopupMin,fPopupMax,nWhere,fPopupRet);
512
513             if (IsFloatBigger(fPopupRet,0.0f))
514             {
515                 m_bPopup = bPopup;
516
517                 CPDF_Rect rcWindow = CPWL_Wnd::GetWindowRect();
518                 m_rcOldWindow = rcWindow;
519                 switch (nWhere)
520                 {
521                 default:
522                 case 0:
523                     rcWindow.bottom -= fPopupRet;
524                     break;
525                 case 1:
526                     rcWindow.top += fPopupRet;
527                     break;
528                 }
529
530                 m_nPopupWhere = nWhere;
531                 Move(rcWindow, TRUE, TRUE);
532             }
533         }
534     }
535     else
536     {
537         m_bPopup = bPopup;
538         Move(m_rcOldWindow, TRUE, TRUE);
539     }
540 }
541
542 FX_BOOL CPWL_ComboBox::OnKeyDown(FX_WORD nChar, FX_DWORD nFlag)
543 {
544     if (!m_pList) return FALSE;
545     if (!m_pEdit) return FALSE;
546
547     m_nSelectItem = -1;
548
549     switch (nChar)
550     {
551     case FWL_VKEY_Up:
552         if (m_pList->GetCurSel() > 0)
553         {
554             FX_BOOL bExit = FALSE;
555             if (m_pList->OnKeyDownWithExit(nChar,bExit,nFlag))
556             {
557                 if (bExit) return FALSE;
558                 SetSelectText();
559             }
560         }
561         return TRUE;
562     case FWL_VKEY_Down:
563         if (m_pList->GetCurSel() < m_pList->GetCount() - 1)
564         {
565             FX_BOOL bExit = FALSE;
566             if (m_pList->OnKeyDownWithExit(nChar,bExit,nFlag))
567             {
568                 if (bExit) return FALSE;
569                 SetSelectText();
570             }
571         }
572         return TRUE;
573     }
574
575     if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
576         return m_pEdit->OnKeyDown(nChar,nFlag);
577
578     return FALSE;
579 }
580
581 FX_BOOL CPWL_ComboBox::OnChar(FX_WORD nChar, FX_DWORD nFlag)
582 {
583     if (!m_pList)
584         return FALSE;
585
586     if (!m_pEdit)
587         return FALSE;
588
589     m_nSelectItem = -1;
590     if (HasFlag(PCBS_ALLOWCUSTOMTEXT))
591         return m_pEdit->OnChar(nChar,nFlag);
592
593     FX_BOOL bExit = FALSE;
594     return m_pList->OnCharWithExit(nChar,bExit,nFlag) ? bExit : FALSE;
595 }
596
597 void CPWL_ComboBox::OnNotify(CPWL_Wnd* pWnd, FX_DWORD msg, intptr_t wParam, intptr_t lParam)
598 {
599     switch (msg)
600     {
601     case PNM_LBUTTONDOWN:
602         if (pWnd == m_pButton)
603         {
604             SetPopup(!m_bPopup);
605             return;
606         }
607         break;
608     case PNM_LBUTTONUP:
609         if (m_pEdit && m_pList)
610         {
611             if (pWnd == m_pList)
612             {
613                 SetSelectText();
614                 SelectAll();
615                 m_pEdit->SetFocus();
616                 SetPopup(FALSE);
617                 return;
618             }
619         }
620     }
621
622     CPWL_Wnd::OnNotify(pWnd,msg,wParam,lParam);
623 }
624
625 FX_BOOL CPWL_ComboBox::IsPopup() const
626 {
627     return m_bPopup;
628 }
629
630 void CPWL_ComboBox::SetSelectText()
631 {
632     CFX_WideString swText = m_pList->GetText();
633     m_pEdit->SelectAll();
634     m_pEdit->ReplaceSel(m_pList->GetText().c_str());
635     m_pEdit->SelectAll();
636
637     m_nSelectItem = m_pList->GetCurSel();
638 }
639
640 FX_BOOL CPWL_ComboBox::IsModified() const
641 {
642     return m_pEdit->IsModified();
643 }
644
645 void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify)
646 {
647      m_pFillerNotify = pNotify;
648
649      if (m_pEdit)
650          m_pEdit->SetFillerNotify(pNotify);
651
652      if (m_pList)
653          m_pList->SetFillerNotify(pNotify);
654 }