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comparison foosdk/sdk/libPPUI/CListControl.cpp @ 1:20d02a178406 default tip

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author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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0:e9bb126753e7 1:20d02a178406
1 #include "stdafx.h"
2 #include "CListControl.h"
3 #include "PaintUtils.h"
4 #include "CListControlUserOptions.h"
5 #include "GDIUtils.h"
6 #include "DarkMode.h"
7
8 #define PrepLayoutCache_Debug 0
9 #define Scroll_Debug 0
10
11 #if Scroll_Debug
12 #define Scroll_Debug_Print(...) PFC_DEBUG_PRINT_FORCED(__VA_ARGS__)
13 #else
14 #define Scroll_Debug_Print(...)
15 #endif
16
17 CListControlUserOptions * CListControlUserOptions::instance = nullptr;
18
19 CRect CListControlImpl::GetClientRectHook() const {
20 CRect temp;
21 if ( m_hWnd == NULL || !GetClientRect(temp)) temp.SetRectEmpty();
22 return temp;
23 }
24
25 bool CListControlImpl::UserEnabledSmoothScroll() const {
26 auto i = CListControlUserOptions::instance;
27 if ( i != nullptr ) return i->useSmoothScroll();
28 return false;
29 }
30
31 LRESULT CListControlImpl::SetFocusPassThru(UINT,WPARAM,LPARAM,BOOL& bHandled) {
32 SetFocus();
33 bHandled = FALSE;
34 return 0;
35 }
36
37 void CListControlImpl::EnsureVisibleRectAbs(const CRect & p_rect) {
38 const CRect rcView = GetVisibleRectAbs();
39 const CRect rcItem = p_rect;
40 int deltaX = 0, deltaY = 0;
41
42 const bool centerOnItem = m_ensureVisibleUser;
43
44 if (rcItem.top < rcView.top || rcItem.bottom > rcView.bottom) {
45 if (rcItem.Height() > rcView.Height()) {
46 deltaY = rcItem.top - rcView.top;
47 } else {
48 if (centerOnItem) {
49 deltaY = rcItem.CenterPoint().y - rcView.CenterPoint().y;
50 } else {
51 if (rcItem.bottom > rcView.bottom) deltaY = rcItem.bottom - rcView.bottom;
52 else deltaY = rcItem.top - rcView.top;
53
54 }
55 }
56 }
57 if (rcItem.left < rcView.left || rcItem.right > rcView.right) {
58 if (rcItem.Width() > rcView.Width()) {
59 if (rcItem.left > rcView.left || rcItem.right < rcView.right) deltaX = rcItem.left - rcView.left;
60 } else {
61 if (centerOnItem) {
62 deltaX = rcItem.CenterPoint().x - rcView.CenterPoint().x;
63 } else {
64 if (rcItem.right > rcView.right) deltaX = rcItem.right - rcView.right;
65 else deltaX = rcItem.left - rcView.left;
66 }
67 }
68 }
69
70 if (deltaX != 0 || deltaY != 0) {
71 MoveViewOriginDelta(CPoint(deltaX,deltaY));
72 }
73 }
74 void CListControlImpl::EnsureItemVisible(t_size p_item, bool bUser) {
75 m_ensureVisibleUser = bUser;
76 PFC_ASSERT(p_item < GetItemCount());
77 if (this->PrepLayoutCache(m_viewOrigin, p_item, p_item+1 )) {
78 RefreshSliders(); Invalidate();
79 }
80 EnsureVisibleRectAbs(GetItemRectAbs(p_item));
81 m_ensureVisibleUser = false;
82 }
83 void CListControlImpl::EnsureHeaderVisible2(size_t atItem) {
84 CRect rect;
85 if (GetGroupHeaderRectAbs2(atItem,rect)) EnsureVisibleRectAbs(rect);
86 }
87
88 void CListControlImpl::RefreshSlider(bool p_vertical) {
89 const CRect viewArea = GetViewAreaRectAbs();
90 const CRect rcVisible = GetVisibleRectAbs();
91 SCROLLINFO si = {};
92 si.cbSize = sizeof(si);
93 si.fMask = SIF_PAGE|SIF_RANGE|SIF_POS;
94
95
96 if (AllowScrollbar(p_vertical)) {
97 if (p_vertical) {
98 si.nPage = rcVisible.Height();
99 si.nMin = viewArea.top;
100 si.nMax = viewArea.bottom - 1;
101 si.nPos = rcVisible.top;
102 } else {
103 si.nPage = rcVisible.Width();
104 si.nMin = viewArea.left;
105 si.nMax = viewArea.right - 1;
106 si.nPos = rcVisible.left;
107 }
108 }
109
110 Scroll_Debug_Print("RefreshSlider vertical=", p_vertical, ", nPage=", si.nPage, ", nMin=", si.nMin, ", nMax=", si.nMax, ", nPos=", si.nPos);
111
112 SetScrollInfo(p_vertical ? SB_VERT : SB_HORZ, &si);
113 }
114
115 void CListControlImpl::RefreshSliders() {
116 //PROBLEM: while lots of data can be reused across those, it has to be recalculated inbetween because view area etc may change when scroll info changes
117 RefreshSlider(false); RefreshSlider(true);
118 }
119
120 int CListControlImpl::GetScrollThumbPos(int which) {
121 SCROLLINFO si = {};
122 si.cbSize = sizeof(si);
123 si.fMask = SIF_TRACKPOS;
124 WIN32_OP_D( GetScrollInfo(which,&si) );
125 return si.nTrackPos;
126 }
127
128 bool CListControlImpl::ResolveGroupRangeCached(size_t itemInGroup, size_t& outBegin, size_t& outEnd) const {
129 auto end = this->m_groupHeaders.upper_bound(itemInGroup);
130 if (end == this->m_groupHeaders.begin()) return false;
131 auto begin = end; --begin;
132 outBegin = *begin;
133 if (end == this->m_groupHeaders.end()) outEnd = this->GetItemCount();
134 else outEnd = *end;
135 return true;
136 }
137
138 size_t CListControlImpl::ResolveGroupRange2(t_size p_base) const {
139 const auto id = this->GetItemGroup(p_base);
140 const size_t count = this->GetItemCount();
141 size_t walk = p_base + 1;
142 while (walk < count && GetItemGroup(walk) == id) ++walk;
143 return walk - p_base;
144 }
145
146
147 static int HandleScroll(WORD p_code,int p_offset,int p_page, int p_line, int p_bottom, int p_thumbpos) {
148 switch(p_code) {
149 case SB_LINEUP:
150 return p_offset - p_line;
151 case SB_LINEDOWN:
152 return p_offset + p_line;
153 case SB_BOTTOM:
154 return p_bottom - p_page;
155 case SB_TOP:
156 return 0;
157 case SB_PAGEUP:
158 return p_offset - p_page;
159 case SB_PAGEDOWN:
160 return p_offset + p_page;
161 case SB_THUMBPOSITION:
162 return p_thumbpos;
163 case SB_THUMBTRACK:
164 return p_thumbpos;
165 default:
166 return p_offset;
167 }
168 }
169
170 static CPoint ClipPointToRect(CPoint const & p_pt,CRect const & p_rect) {
171 return CPoint(pfc::clip_t(p_pt.x,p_rect.left,p_rect.right),pfc::clip_t(p_pt.y,p_rect.top,p_rect.bottom));
172 }
173
174 void CListControlImpl::MoveViewOriginNoClip(CPoint p_target) {
175 UpdateWindow();
176 PrepLayoutCache(p_target);
177 const CPoint old = m_viewOrigin;
178 m_viewOrigin = p_target;
179
180 if (m_viewOrigin != old) {
181 #if PrepLayoutCache_Debug
182 PFC_DEBUGLOG << "MoveViewOriginNoClip: m_viewOrigin=" << m_viewOrigin.x << "," << m_viewOrigin.y;
183 #endif
184
185 if (m_viewOrigin.x != old.x) SetScrollPos(SB_HORZ,m_viewOrigin.x);
186 if (m_viewOrigin.y != old.y) SetScrollPos(SB_VERT,m_viewOrigin.y);
187
188 const CPoint delta = old - m_viewOrigin;
189 if (FixedOverlayPresent()) Invalidate();
190 else {
191 DWORD flags = SW_INVALIDATE | SW_ERASE;
192 const DWORD smoothScrollMS = 50;
193 if (this->UserEnabledSmoothScroll() && this->CanSmoothScroll()) {
194 flags |= SW_SMOOTHSCROLL | (smoothScrollMS << 16);
195 }
196
197 ScrollWindowEx(delta.x,delta.y,GetClientRectHook(),NULL,0,0,flags );
198 }
199
200 OnViewOriginChange(m_viewOrigin - old);
201 }
202 }
203
204 CPoint CListControlImpl::ClipViewOrigin(CPoint p_origin) const {
205 return ClipPointToRect(p_origin,GetValidViewOriginArea());
206 }
207 void CListControlImpl::MoveViewOrigin(CPoint p_target) {
208 PrepLayoutCache(p_target);
209 MoveViewOriginNoClip(ClipViewOrigin(p_target));
210 }
211
212 #ifndef SPI_GETWHEELSCROLLCHARS
213 #define SPI_GETWHEELSCROLLCHARS 0x006C
214 #endif
215 int CListControlImpl::HandleWheel(int & p_accum,int p_delta, bool bHoriz) {
216 if ( m_suppressMouseWheel ) return 0;
217 UINT scrollLines = 1;
218 SystemParametersInfo(bHoriz ? SPI_GETWHEELSCROLLCHARS : SPI_GETWHEELSCROLLLINES,0,&scrollLines,0);
219 if (scrollLines == ~0) {
220 p_accum = 0;
221 int rv = -pfc::sgn_t(p_delta);
222 CRect client = GetClientRectHook();
223 if (bHoriz) rv *= client.Width();
224 else rv *= client.Height();
225 return rv;
226 }
227
228 const int itemHeight = GetItemHeight();
229 const int extraScale = 10000;
230
231 p_accum += p_delta * extraScale;
232 if ((int)scrollLines < 1) scrollLines = 1;
233 int multiplier = (WHEEL_DELTA * extraScale) / (scrollLines * itemHeight);
234 if (multiplier<1) multiplier = 1;
235
236 int delta = pfc::rint32( (double) p_accum / (double) multiplier );
237 p_accum -= delta * multiplier;
238 return -delta;
239
240 /*
241 if (p_accum<=-multiplier || p_accum>=multiplier) {
242 int direction;
243 int ov = p_accum;
244 if (ov<0) {
245 direction = -1;
246 ov = -ov;
247 p_accum = - ((-p_accum)%multiplier);
248 } else {
249 p_accum %= multiplier;
250 direction = 1;
251 }
252
253 return - (direction * (ov + multiplier - 1) ) / multiplier;
254 } else {
255 return 0;
256 }
257 */
258 }
259
260 LRESULT CListControlImpl::OnVWheel(UINT,WPARAM p_wp,LPARAM,BOOL&) {
261 const CRect client = GetClientRectHook(), view = this->GetViewAreaRectAbs();
262 int deltaPixels = HandleWheel(m_wheelAccumY,(short)HIWORD(p_wp), false);
263
264 const bool canVScroll = client.Height() < view.Height();
265 const bool canHScroll = client.Width() < view.Width();
266
267 CPoint ptDelta;
268 if ( canVScroll && canHScroll && GetHotkeyModifierFlags() == MOD_SHIFT) {
269 ptDelta = CPoint(deltaPixels, 0); // default to horizontal scroll if shift is pressed
270 } else if (canVScroll) {
271 ptDelta = CPoint(0,deltaPixels);
272 } else if (canHScroll) {
273 ptDelta = CPoint(deltaPixels,0);
274 }
275
276 if ( ptDelta != CPoint(0,0) ) {
277 MoveViewOriginDelta(ptDelta);
278 }
279 return 0;
280 }
281 LRESULT CListControlImpl::OnHWheel(UINT,WPARAM p_wp,LPARAM,BOOL&) {
282 // const CRect client = GetClientRectHook();
283 int deltaPixels = HandleWheel(m_wheelAccumX,(short)HIWORD(p_wp), true);
284 MoveViewOriginDelta(CPoint(-deltaPixels,0));
285 return 0;
286 }
287
288 // WM_VSCROLL special fix
289 // We must expect SCROLLINFO to go out of sync with layout, due to group partitioning happening as the user scrolls
290 // SetScrollInfo() is apparently disregarded while the user is scrolling, causing nonsensical behavior if we live update it as we discover new groups
291 // When handling input, we must take the position as % of the set scrollbar range and map it to our coordinates - even though it is mappable directly if no groups etc are in use
292 LRESULT CListControlImpl::OnVScroll(UINT,WPARAM p_wp,LPARAM,BOOL&) {
293 SCROLLINFO si = {};
294 si.cbSize = sizeof(si);
295 si.fMask = SIF_ALL;
296 WIN32_OP_D(GetScrollInfo(SB_VERT, &si));
297 int thumb = si.nTrackPos; // HIWORD(p_wp);
298 auto bottom = GetViewAreaRectAbs().bottom;
299 auto visible = GetVisibleHeight();
300
301 if (si.nMax < si.nMin) return 0;
302 double p = (double)(thumb - si.nMin) / (double)(si.nMax + 1 - si.nMin);
303 thumb = pfc::rint32(p * bottom);
304 int target = HandleScroll(LOWORD(p_wp), m_viewOrigin.y, visible, GetItemHeight(), bottom, thumb);
305
306 Scroll_Debug_Print("OnVScroll thumb=", thumb, ", target=", target, ", bottom=", bottom, ", visible=", visible, ", p=", p);
307
308 MoveViewOrigin(CPoint(m_viewOrigin.x, target));
309
310 return 0;
311 }
312
313 // ====== Logitech scroll bug explanation ======
314 // With Logitech wheel hscroll, we must use WPARAM position, not GetScrollInfo() value.
315 // However this is wrong, we'll get nonsense if scroll range doesn't fit in 16-bit!
316 // As a workaround, we use GetScrollInfo() value for vscroll (good)
317 // and workaround Logitech bug by using WPARAM position with hscroll (practically impossible to overflow)
318 LRESULT CListControlImpl::OnHScroll(UINT,WPARAM p_wp,LPARAM,BOOL&) {
319 int thumb = HIWORD(p_wp);
320 const auto fullWidth = GetViewAreaWidth();
321 if (fullWidth > INT16_MAX) { // Possible overflow or near-overflow? Drop Logitech stupidity mitigation
322 thumb = GetScrollThumbPos(SB_HORZ);
323 }
324 int target = HandleScroll(LOWORD(p_wp), m_viewOrigin.x, GetVisibleRectAbs().Width(), GetItemHeight() /*fixme*/, fullWidth, thumb);
325 Scroll_Debug_Print("OnHScroll thumb=", thumb, ", target=", target);
326 MoveViewOrigin(CPoint(target,m_viewOrigin.y));
327 return 0;
328 }
329
330 LRESULT CListControlImpl::OnGesture(UINT,WPARAM,LPARAM lParam,BOOL& bHandled) {
331 if (!this->m_gestureAPI.IsAvailable()) {
332 bHandled = FALSE;
333 return 0;
334 }
335 HGESTUREINFO hGesture = (HGESTUREINFO) lParam;
336 GESTUREINFO gestureInfo = {sizeof(gestureInfo)};
337 if (m_gestureAPI.GetGestureInfo(hGesture, &gestureInfo)) {
338 //console::formatter() << "WM_GESTURE " << pfc::format_hex( gestureInfo.dwFlags ) << " " << (int)gestureInfo.dwID << " X:" << gestureInfo.ptsLocation.x << " Y:" << gestureInfo.ptsLocation.y << " arg:" << (__int64) gestureInfo.ullArguments;
339 CPoint pt( gestureInfo.ptsLocation.x, gestureInfo.ptsLocation.y );
340 switch(gestureInfo.dwID) {
341 case GID_BEGIN:
342 m_gesturePoint = pt;
343 break;
344 case GID_END:
345 break;
346 case GID_PAN:
347 MoveViewOriginDelta( this->m_gesturePoint - pt);
348 m_gesturePoint = pt;
349 break;
350 }
351 }
352
353 m_gestureAPI.CloseGestureInfoHandle(hGesture);
354 bHandled = TRUE;
355 return 0;
356 }
357
358 LRESULT CListControlImpl::OnSize(UINT,WPARAM,LPARAM,BOOL&) {
359 this->PrepLayoutCache(m_viewOrigin);
360 OnSizeAsync_Trigger();
361 RefreshSliders();
362 return 0;
363 }
364
365
366 void CListControlImpl::RenderBackground( CDCHandle dc, CRect const & rc ) {
367 PaintUtils::FillRectSimple(dc,rc,GetSysColorHook(colorBackground));
368 }
369
370 void CListControlImpl::PaintContent(CRect rcPaint, HDC dc) {
371 CDCHandle renderDC(dc);
372
373 CMemoryDC bufferDC(renderDC,rcPaint);
374 renderDC = bufferDC;
375 this->RenderBackground(renderDC, rcPaint);
376
377 RenderRect(rcPaint, renderDC);
378 }
379
380 void CListControlImpl::OnPrintClient(HDC dc, UINT) {
381 CRect rcClient; this->GetClientRect( rcClient );
382 PaintContent( rcClient, dc );
383 }
384
385 void CListControlImpl::OnPaint(CDCHandle target) {
386 auto toggle = pfc::autoToggle(m_paintInProgress, true);
387 if (target) {
388 CRect rcClient; this->GetClientRect(rcClient);
389 PaintContent(rcClient, target);
390 } else {
391 CPaintDC paintDC(*this);
392 PaintContent(paintDC.m_ps.rcPaint, paintDC.m_hDC);
393 }
394 }
395
396 bool CListControlImpl::GetItemRange(const CRect & p_rect,t_size & p_base,t_size & p_count) const {
397 return GetItemRangeAbs(this->RectClientToAbs(p_rect), p_base, p_count);
398 }
399
400
401
402 bool CListControlImpl::GetItemRangeAbsInclHeaders(const CRect & p_rect,t_size & p_base,t_size & p_count) const {
403 CRect temp(p_rect);
404 temp.bottom += this->GetGroupHeaderHeight();
405 return GetItemRangeAbs(temp, p_base, p_count);
406 }
407
408 bool CListControlImpl::GetItemRangeAbs(const CRect & p_rect,t_size & p_base,t_size & p_count) const {
409 const size_t count = GetItemCount();
410 if (p_rect.right < 0 || p_rect.left >= GetItemWidth() || count == 0) return false;
411
412 size_t top = IndexFromPointAbs(CPoint(0, p_rect.top));
413 size_t bottom = IndexFromPointAbs(CPoint(0, p_rect.bottom));
414 if (top == SIZE_MAX) return false;
415 if (bottom > count-1) bottom = count - 1;
416 p_base = top;
417 p_count = bottom - top + 1;
418 PFC_ASSERT(p_base + p_count <= count);
419 return true;
420 }
421
422 void CListControlImpl::RenderRect(const CRect & p_rect,CDCHandle p_dc) {
423 t_size base, count;
424 if (GetItemRange(p_rect,base,count)) {
425 for(t_size walk = 0; walk < count; ++walk) {
426 size_t atItem = base + walk;
427 if (m_groupHeaders.count(atItem) > 0) {
428 CRect rcHeader, rcUpdate;
429 if (GetGroupHeaderRectAbs2(atItem, rcHeader) ) {
430 rcHeader = RectAbsToClient(rcHeader);
431 if (rcUpdate.IntersectRect(rcHeader, p_rect)) {
432 DCStateScope dcState(p_dc);
433 if (p_dc.IntersectClipRect(rcUpdate) != NULLREGION) {
434 try {
435 RenderGroupHeader2(atItem, rcHeader, rcUpdate, p_dc);
436 } catch (...) {
437 PFC_ASSERT(!"Should not get here");
438 }
439 }
440 }
441 }
442 }
443
444 CRect rcUpdate, rcItem = GetItemRect(atItem);
445 if (rcUpdate.IntersectRect(rcItem,p_rect)) {
446 DCStateScope dcState(p_dc);
447 if (p_dc.IntersectClipRect(rcUpdate) != NULLREGION) {
448 try {
449 RenderItem(atItem,rcItem,rcUpdate,p_dc);
450 } catch(...) {
451 PFC_ASSERT(!"Should not get here");
452 }
453 }
454 }
455 }
456
457 if ( this->m_groupHeaders.size() > 0 ) {
458 auto iter = m_groupHeaders.upper_bound(base);
459 if (iter != m_groupHeaders.begin()) {
460 --iter;
461 while ( iter != m_groupHeaders.end() && *iter < base + count) {
462 auto iter2 = iter; ++iter2;
463
464 size_t begin = *iter;
465 size_t end;
466 if (iter2 == m_groupHeaders.end()) end = this->GetItemCount();
467 else end = *iter2;
468
469 CRect rc;
470 rc.top = this->GetItemOffsetAbs(begin);
471 rc.bottom = this->GetItemBottomOffsetAbs(end-1);
472 rc.left = 0;
473 rc.right = this->GetItemWidth();
474 rc = this->RectAbsToClient(rc);
475 CRect rcUpdate;
476 if (rcUpdate.IntersectRect(rc, p_rect)) {
477 DCStateScope dcState(p_dc);
478 if (p_dc.IntersectClipRect(rcUpdate) != NULLREGION) {
479 try {
480 this->RenderGroupOverlay(begin, rc, rcUpdate, p_dc);
481 } catch (...) {
482 PFC_ASSERT(!"Should not get here");
483 }
484 }
485 }
486
487
488 iter = iter2;
489 }
490 }
491 }
492 }
493
494 RenderOverlay2(p_rect,p_dc);
495 }
496
497 bool CListControlImpl::GetGroupOverlayRectAbs(size_t atItem, CRect& outRect) {
498 auto iter = m_groupHeaders.upper_bound(atItem);
499 if (iter == m_groupHeaders.begin()) return false;
500 auto iter2 = iter; --iter;
501
502 size_t begin = *iter;
503 size_t end;
504 if (iter2 == m_groupHeaders.end()) end = this->GetItemCount();
505 else end = *iter2;
506
507 CRect rc;
508
509 rc.top = this->GetItemOffsetAbs(begin);
510 rc.bottom = this->GetItemBottomOffsetAbs(end - 1);
511 rc.left = 0;
512 rc.right = this->GetItemWidth();
513
514 outRect = rc;
515 return true;
516 }
517
518 void CListControlImpl::MinGroupHeight2ChangedForGroup(groupID_t groupID, bool reloadWhole) {
519 for (auto iter = m_groupHeaders.begin(); iter != m_groupHeaders.end(); ++iter) {
520 if (groupID == GetItemGroup(*iter)) {
521 this->MinGroupHeight2Changed(*iter, reloadWhole);
522 }
523 }
524 }
525
526 void CListControlImpl::UpdateGroupOverlayByID(groupID_t groupID, int xFrom, int xTo) {
527 t_size base, count;
528 if (GetItemRangeAbs(GetVisibleRectAbs(), base, count)) {
529 bool on = false; // Have to walk whole range - there may be multiple groups with the same ID
530 for (size_t walk = 0; walk < count; ++walk) {
531 bool test = (groupID == GetItemGroup(base + walk));
532 if (test && !on) {
533 CRect rc;
534 if (GetGroupOverlayRectAbs(base + walk, rc)) {
535 if (xFrom < xTo) {
536 rc.left = xFrom; rc.right = xTo;
537 }
538 this->InvalidateRect(this->RectAbsToClient(rc));
539 }
540 }
541
542 on = test;
543 }
544 }
545 }
546
547 CRect CListControlImpl::GetItemRect(t_size p_item) const {
548 return this->RectAbsToClient(GetItemRectAbs(p_item));
549 }
550
551 bool CListControlImpl::GetGroupHeaderRect2(size_t atItem,CRect & p_rect) const {
552 CRect temp;
553 if (!GetGroupHeaderRectAbs2(atItem,temp)) return false;
554 p_rect = RectAbsToClient(temp);
555 return true;
556 }
557
558 size_t CListControlImpl::FindGroupBaseCached(size_t itemFor) const {
559 auto iter = m_groupHeaders.upper_bound(itemFor);
560 if (iter == m_groupHeaders.begin()) return 0;
561 --iter;
562 return *iter;
563 }
564
565 size_t CListControlImpl::FindGroupBase(size_t itemFor) const {
566 return this->FindGroupBase(itemFor, this->GetItemGroup(itemFor));
567 }
568
569 size_t CListControlImpl::FindGroupBase(size_t itemFor, groupID_t id) const {
570 size_t walk = itemFor;
571 while (walk > 0) {
572 size_t prev = walk - 1;
573 if (this->GetItemGroup(prev) != id) break;
574 walk = prev;
575 }
576 return walk;
577 }
578
579 bool CListControlImpl::PrepLayoutCache(CPoint& ptOrigin, size_t indexLo, size_t indexHi) {
580 const size_t count = GetItemCount();
581 if (count == 0) return false;
582 #if PrepLayoutCache_Debug
583 PFC_DEBUGLOG << "PrepLayoutCache entry";
584 PFC_DEBUGLOG << "PrepLayoutCache: count=" << count << " knownGroups=" << this->m_groupHeaders.size();
585 PFC_DEBUGLOG << "PrepLayoutCache: indexLo=" << pfc::format_index(indexLo) << " indexHi=" << pfc::format_index(indexHi);
586 #endif
587 const int clientHeight = pfc::max_t<int>(this->GetClientRectHook().Height(), 100);
588
589 // Always walk 2*clientHeight, with area above and below
590 int yMax = -1, yBase = 0;
591 size_t baseItem = 0, endItem = SIZE_MAX;
592
593 if (!m_greedyGroupLayout) {
594 if (indexLo == SIZE_MAX) {
595 yBase = pfc::max_t<int>(ptOrigin.y - clientHeight / 2, 0);
596 yMax = yBase + clientHeight * 2;
597 baseItem = pfc::min_t<size_t>(this->IndexFromPointAbs(yBase), count - 1);
598 } else {
599 auto itemHeight = GetItemHeight();
600 size_t extraItems = (size_t)(clientHeight / itemHeight);
601 #if PrepLayoutCache_Debug
602 PFC_DEBUGLOG << "PrepLayoutCache: clientHeight=" << clientHeight << " itemHeight=" << itemHeight << " extraItems=" << extraItems;
603 #endif
604 if (indexLo < extraItems) baseItem = 0;
605 else baseItem = indexLo - extraItems;
606
607 if (indexHi == SIZE_MAX) {
608 endItem = baseItem + extraItems;
609 } else {
610 endItem = indexHi + extraItems;
611 }
612 if (endItem > count) endItem = count;
613
614 #if PrepLayoutCache_Debug
615 PFC_DEBUGLOG << "PrepLayoutCache: baseItem=" << baseItem << " endItem=" << endItem;
616 #endif
617 }
618 }
619
620
621
622
623 size_t item = baseItem;
624 {
625 const auto group = this->GetItemGroup(baseItem);
626 if (group != 0) {
627 size_t hdr = this->FindGroupBase(baseItem, group);
628 if (hdr < baseItem) {
629 item = hdr;
630 }
631 }
632 }
633
634 #if PrepLayoutCache_Debug
635 if (yMax != -1) {
636 PFC_DEBUGLOG << "PrepLayoutCache: yBase=" << yBase << " yMax=" << yMax;
637 }
638 if (indexLo != SIZE_MAX) {
639 pfc::string_formatter msg;
640 msg << "PrepLayoutCache: indexLo=" << indexLo;
641 if (indexHi != SIZE_MAX) {
642 msg << " indexHi=" << indexHi;
643 }
644 pfc::outputDebugLine(msg);
645 }
646 PFC_DEBUGLOG << "PrepLayoutCache: baseItem=" << baseItem;
647 #endif
648
649 size_t anchorIdx = m_greedyGroupLayout ? SIZE_MAX : this->IndexFromPointAbs(ptOrigin.y);
650 int anchorDelta = 0;
651 bool anchorIsFirstInGroup = IsItemFirstInGroupCached(anchorIdx);
652 if (anchorIdx != SIZE_MAX) {
653 anchorDelta = ptOrigin.y - GetItemOffsetAbs(anchorIdx);
654 }
655
656 #if PrepLayoutCache_Debug
657 PFC_DEBUGLOG << "PrepLayoutCache: anchorIdx=" << pfc::format_index(anchorIdx) << " anchorDelta=" << anchorDelta << " anchorIsFirstInGroup=" << anchorIsFirstInGroup;
658 #endif
659
660 bool bChanged = false;
661 int gh = -1;
662 int ih = -1;
663 int yWalk = yBase;
664 groupID_t prevGroup = 0;
665 if (item > 1) prevGroup = this->GetItemGroup(item - 1);
666 for (; item < count; ++item) {
667 int yDelta = 0;
668 auto group = this->GetItemGroup(item);
669 if (group != prevGroup) {
670 if (m_groupHeaders.insert(item).second) bChanged = true;
671 if (gh < 0) gh = GetGroupHeaderHeight();
672 yDelta += gh;
673 } else {
674 if (m_groupHeaders.erase(item) > 0) bChanged = true;
675 }
676 prevGroup = group;
677
678 auto iter = m_varItemHeights.find(item);
679 int varHeight = this->GetItemHeight2(item);
680 if (varHeight < 0) {
681 if (iter != m_varItemHeights.end()) {
682 m_varItemHeights.erase(iter);
683 bChanged = true;
684 }
685 if (ih < 0) ih = this->GetItemHeight();
686 yDelta += ih;
687 } else {
688 if (iter == m_varItemHeights.end()) {
689 m_varItemHeights[item] = varHeight;
690 bChanged = true;
691 } else if ( iter->second != varHeight ) {
692 iter->second = varHeight;
693 bChanged = true;
694 }
695
696 yDelta += varHeight;
697 }
698
699 if (item >= endItem) {
700 break;
701 }
702 if (item >= baseItem && yMax != -1) {
703 yWalk += yDelta;
704 if (yWalk > yMax) break;
705 }
706 }
707
708 #if PrepLayoutCache_Debug
709 PFC_DEBUGLOG << "PrepLayoutCache: bChanged=" << bChanged << " knownGroups=" << m_groupHeaders.size() << " knownVarHeights=" << m_varItemHeights.size();
710 #endif
711
712 if (bChanged) {
713 if (anchorIdx != SIZE_MAX) {
714 int fix = GetItemOffsetAbs(anchorIdx) + anchorDelta;
715
716 // View would begin exactly with an item that became a first item in a group?
717 if (anchorDelta == 0 && !anchorIsFirstInGroup && IsItemFirstInGroupCached(anchorIdx)) {
718 if (gh < 0) gh = GetGroupHeaderHeight();
719 fix -= gh;
720 }
721
722 #if PrepLayoutCache_Debug
723 PFC_DEBUGLOG << "PrepLayoutCache: fixing origin: " << ptOrigin.y << " to " << fix;
724 #endif
725
726 ptOrigin.y = fix;
727 if (&ptOrigin != &m_viewOrigin && m_hWnd != NULL) {
728 #if PrepLayoutCache_Debug
729 PFC_DEBUGLOG << "PrepLayoutCache: invalidating view";
730 #endif
731 Invalidate();
732 }
733 }
734 }
735
736 if ( bChanged ) {
737 // DO NOT update sliders from here, causes mayhem, SetScrollInfo() in mid-scroll is not really handled
738 // this->RefreshSliders();
739 }
740 return bChanged;
741 }
742
743 int CListControlImpl::GetViewAreaHeight() const {
744 auto ret = GetItemOffsetAbs(GetItemCount());
745 Scroll_Debug_Print("GetViewAreaHeight: " , ret);
746 return ret;
747 }
748
749 int CListControlImpl::GetItemBottomOffsetAbs(size_t item) const {
750 return GetItemOffsetAbs(item) + GetItemHeightCached(item);
751 }
752
753 int CListControlImpl::GetItemOffsetAbs2(size_t base, size_t item) const {
754 // Also valid with item == GetItemCount()
755 size_t varcount = 0;
756 int acc = 0;
757 const bool baseValid = (base != SIZE_MAX);
758 const size_t itemDelta = baseValid ? item - base : item;
759 for (auto iter = (baseValid ? m_varItemHeights.lower_bound(base) : m_varItemHeights.begin()); iter != m_varItemHeights.end(); ++iter){
760 if (iter->first >= item) break;
761 if (iter->second > 0) acc += iter->second;
762 ++varcount;
763 }
764 if (varcount < itemDelta) {
765 acc += GetItemHeight() * (int)(itemDelta - varcount);
766 }
767
768 int gh = -1;
769 for (auto iter = (baseValid ? m_groupHeaders.upper_bound(base) : m_groupHeaders.begin()); iter != m_groupHeaders.end(); ++iter){
770 if (*iter > item) break;
771 if (gh < 0) gh = GetGroupHeaderHeight();
772 acc += gh;
773 }
774
775 return acc;
776 }
777
778 int CListControlImpl::GetItemOffsetAbs(size_t item) const {
779 // Also valid with item == GetItemCount()
780 return GetItemOffsetAbs2(SIZE_MAX, item);
781 }
782
783 int CListControlImpl::GetItemContentHeightCached(size_t item) const {
784 auto iter = m_varItemHeights.find(item);
785 if (iter == m_varItemHeights.end()) return GetItemHeight();
786 else return this->GetItemHeight2Content( item, iter->second );
787 }
788
789 int CListControlImpl::GetItemHeightCached(size_t item) const {
790 auto iter = m_varItemHeights.find(item);
791 if (iter == m_varItemHeights.end()) return GetItemHeight();
792 else return iter->second;
793 }
794
795 CRect CListControlImpl::GetItemRectAbs(t_size p_item) const {
796 PFC_ASSERT(p_item < GetItemCount());
797 // const int normalHeight = GetItemHeight();
798 CRect rcItem;
799 rcItem.top = GetItemOffsetAbs(p_item);
800 rcItem.bottom = rcItem.top + GetItemContentHeightCached(p_item);
801 rcItem.left = 0;
802 rcItem.right = rcItem.left + GetItemWidth();
803 return rcItem;
804 }
805
806 bool CListControlImpl::GetGroupHeaderRectAbs2(size_t atItem,CRect & p_rect) const {
807
808 if (m_groupHeaders.count(atItem) == 0) return false;
809
810 p_rect.bottom = GetItemOffsetAbs(atItem);
811 p_rect.top = p_rect.bottom - GetGroupHeaderHeight();
812 p_rect.left = 0;
813 p_rect.right = GetItemWidth();
814 return true;
815 }
816
817 CRect CListControlImpl::GetViewAreaRectAbs() const {
818 return CRect(0,0,GetViewAreaWidth(),GetViewAreaHeight());
819 }
820
821 CRect CListControlImpl::GetViewAreaRect() const {
822 CRect rc = GetViewAreaRectAbs();
823 rc.OffsetRect( - GetViewOffset() );
824 CRect ret; ret.IntersectRect(rc,GetClientRectHook());
825 return ret;
826 }
827
828 void CListControlImpl::UpdateGroupHeader2(size_t atItem) {
829 CRect rect;
830 if (GetGroupHeaderRect2(atItem,rect)) {
831 InvalidateRect(rect);
832 }
833 }
834 static void AddUpdateRect(HRGN p_rgn,CRect const & p_rect) {
835 CRgn temp; temp.CreateRectRgnIndirect(p_rect);
836 CRgnHandle(p_rgn).CombineRgn(temp,RGN_OR);
837 }
838
839 void CListControlImpl::OnItemsReordered( const size_t * order, size_t count ) {
840 PFC_ASSERT(count == GetItemCount()); (void)count;
841 ReloadItems( pfc::bit_array_order_changed(order) );
842 }
843 void CListControlImpl::UpdateItems(const pfc::bit_array & p_mask) {
844 t_size base,count;
845 if (GetItemRangeAbs(GetVisibleRectAbs(),base,count)) {
846 const t_size max = base+count;
847 CRgn updateRgn; updateRgn.CreateRectRgn(0,0,0,0);
848 bool found = false;
849 for(t_size walk = p_mask.find_first(true,base,max); walk < max; walk = p_mask.find_next(true,walk,max)) {
850 found = true;
851 AddUpdateRect(updateRgn,GetItemRect(walk));
852 }
853 if (found) {
854 InvalidateRgn(updateRgn);
855 }
856 }
857 }
858
859 std::pair<size_t, size_t> CListControlImpl::GetVisibleRange() const {
860 const size_t total = GetItemCount();
861 CRect rcVisible = this->GetVisibleRectAbs();
862 size_t lo = this->IndexFromPointAbs(rcVisible.top);
863 PFC_ASSERT(lo != SIZE_MAX);
864 if (lo == SIZE_MAX) lo = 0; // should not happen
865 size_t hi = this->IndexFromPointAbs(rcVisible.bottom);
866 if (hi < total) ++hi;
867 else hi = total;
868 return { lo, hi };
869 }
870
871 bool CListControlImpl::IsItemVisible(size_t which) const {
872 CRect rcVisible = this->GetVisibleRectAbs();
873 CRect rcItem = this->GetItemRectAbs(which);
874 return rcItem.top >= rcVisible.top && rcItem.bottom <= rcVisible.bottom;
875 }
876
877 void CListControlImpl::UpdateItemsAndHeaders(const pfc::bit_array & p_mask) {
878 t_size base,count;
879 groupID_t groupWalk = 0;
880 if (GetItemRangeAbsInclHeaders(GetVisibleRectAbs(),base,count)) {
881 const t_size max = base+count;
882 CRgn updateRgn; updateRgn.CreateRectRgn(0,0,0,0);
883 bool found = false;
884 for(t_size walk = p_mask.find_first(true,base,max); walk < max; walk = p_mask.find_next(true,walk,max)) {
885 found = true;
886 const groupID_t groupId = GetItemGroup(walk);
887 if (groupId != groupWalk) {
888 CRect rect;
889 if (GetGroupHeaderRect2(walk,rect)) {
890 AddUpdateRect(updateRgn,rect);
891 }
892 groupWalk = groupId;
893 }
894 AddUpdateRect(updateRgn,GetItemRect(walk));
895 }
896 if (found) {
897 InvalidateRgn(updateRgn);
898 }
899 }
900 }
901
902
903 CRect CListControlImpl::GetValidViewOriginArea() const {
904 const CRect rcView = GetViewAreaRectAbs();
905 const CRect rcClient = GetClientRectHook();
906 CRect rcArea = rcView;
907 rcArea.right -= pfc::min_t(rcView.Width(),rcClient.Width());
908 rcArea.bottom -= pfc::min_t(rcView.Height(),rcClient.Height());
909 return rcArea;
910 }
911
912 void CListControlImpl::OnViewAreaChanged(CPoint p_originOverride) {
913 const CPoint oldViewOrigin = m_viewOrigin;
914
915 PrepLayoutCache(p_originOverride);
916
917 m_viewOrigin = ClipPointToRect(p_originOverride,GetValidViewOriginArea());
918
919 if (m_viewOrigin != p_originOverride) {
920 // Did clip from the requested?
921 PrepLayoutCache(m_viewOrigin);
922 }
923 #if PrepLayoutCache_Debug
924 PFC_DEBUGLOG << "OnViewAreaChanged: m_viewOrigin=" << m_viewOrigin.x << "," << m_viewOrigin.y;
925 #endif
926
927 RefreshSliders();
928
929 Invalidate();
930
931 if (oldViewOrigin != m_viewOrigin) {
932 OnViewOriginChange(m_viewOrigin - oldViewOrigin);
933 }
934 }
935
936 size_t CListControlImpl::IndexFromPointAbs(CPoint pt) const {
937 if (pt.x < 0 || pt.x >= GetItemWidth()) return SIZE_MAX;
938 return IndexFromPointAbs(pt.y);
939 }
940
941 size_t CListControlImpl::IndexFromPointAbs(int ptY) const {
942 const size_t count = GetItemCount();
943 if (count == 0) return SIZE_MAX;
944
945 class wrapper {
946 public:
947 wrapper(const CListControlImpl & o) : owner(o) {}
948 int operator[] (size_t idx) const {
949 // Return LAST line of this item
950 return owner.GetItemBottomOffsetAbs(idx)-1;
951 }
952 const CListControlImpl & owner;
953 };
954
955 wrapper w(*this);
956 size_t result = SIZE_MAX;
957 pfc::binarySearch<>::run(w, 0, count, ptY, result);
958 PFC_ASSERT(result != SIZE_MAX);
959 return result;
960 }
961
962 bool CListControlImpl::ItemFromPointAbs(CPoint const & p_pt,t_size & p_item) const {
963 size_t idx = IndexFromPointAbs(p_pt);
964 if (idx >= GetItemCount()) return false;
965 CRect rc = this->GetItemRectAbs(idx);
966 if (!rc.PtInRect(p_pt)) return false;
967 p_item = idx;
968 return true;
969 }
970
971 size_t CListControlImpl::ItemFromPointAbs(CPoint const& p_pt) const {
972 size_t ret = SIZE_MAX;
973 ItemFromPointAbs(p_pt, ret);
974 return ret;
975 }
976
977 bool CListControlImpl::GroupHeaderFromPointAbs2(CPoint const & p_pt,size_t & atItem) const {
978 size_t idx = IndexFromPointAbs(p_pt);
979 if (idx == SIZE_MAX) return false;
980 CRect rc;
981 if (!this->GetGroupHeaderRectAbs2(idx, rc)) return false;
982 if (!rc.PtInRect(p_pt)) return false;
983 atItem = idx;
984 return true;
985 }
986
987 void CListControlImpl::OnThemeChanged() {
988 m_themeCache.remove_all();
989 }
990
991 CTheme & CListControlImpl::themeFor(const char * what) {
992 bool bNew;
993 auto & ret = this->m_themeCache.find_or_add_ex( what, bNew );
994 if (bNew) ret.OpenThemeData(*this, pfc::stringcvt::string_wide_from_utf8(what));
995 return ret;
996 }
997
998 void CListControlImpl::SetDarkMode(bool v) {
999 if (m_darkMode != v) {
1000 m_darkMode = v;
1001 RefreshDarkMode();
1002 }
1003 }
1004
1005 void CListControlImpl::RefreshDarkMode() {
1006 if (m_hWnd != NULL) {
1007 Invalidate();
1008
1009 // GOD DAMNIT: Should use ItemsView, but only Explorer fixes scrollbars
1010 DarkMode::ApplyDarkThemeCtrl(m_hWnd, m_darkMode, L"Explorer");
1011 }
1012 }
1013
1014 LRESULT CListControlImpl::OnCreatePassThru(UINT,WPARAM,LPARAM,BOOL& bHandled) {
1015
1016 RefreshDarkMode();
1017
1018
1019 OnViewAreaChanged();
1020
1021 if (m_gestureAPI.IsAvailable()) {
1022 GESTURECONFIG config = {GID_PAN, GC_PAN_WITH_SINGLE_FINGER_VERTICALLY|GC_PAN_WITH_INERTIA, GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY | GC_PAN_WITH_GUTTER};
1023 m_gestureAPI.SetGestureConfig( *this, 0, 1, &config, sizeof(GESTURECONFIG));
1024 }
1025
1026 bHandled = FALSE;
1027 return 0;
1028 }
1029 bool CListControlImpl::IsSameItemOrHeaderAbs(const CPoint & p_point1, const CPoint & p_point2) const {
1030 t_size item1, item2;
1031 if (ItemFromPointAbs(p_point1, item1)) {
1032 if (ItemFromPointAbs(p_point2,item2)) {
1033 return item1 == item2;
1034 } else {
1035 return false;
1036 }
1037 }
1038 if (GroupHeaderFromPointAbs2(p_point1, item1)) {
1039 if (GroupHeaderFromPointAbs2(p_point2, item2)) {
1040 return item1 == item2;
1041 } else {
1042 return false;
1043 }
1044 }
1045 return false;
1046 }
1047
1048 void CListControlImpl::OnSizeAsync_Trigger() {
1049 if (!m_sizeAsyncPending) {
1050 if (PostMessage(MSG_SIZE_ASYNC,0,0)) {
1051 m_sizeAsyncPending = true;
1052 } else {
1053 PFC_ASSERT(!"Shouldn't get here!");
1054 //should not happen
1055 ListHandleResize();
1056 }
1057 }
1058 }
1059
1060 void CListControlImpl::ListHandleResize() {
1061 MoveViewOriginDelta(CPoint(0,0));
1062 m_sizeAsyncPending = false;
1063 }
1064
1065 void CListControlImpl::AddGroupHeaderToUpdateRgn2(HRGN p_rgn, size_t atItem) const {
1066 CRect rcHeader;
1067 if (GetGroupHeaderRect2(atItem,rcHeader)) AddUpdateRect(p_rgn,rcHeader);
1068 }
1069 void CListControlImpl::AddItemToUpdateRgn(HRGN p_rgn, t_size p_index) const {
1070 if (p_index < this->GetItemCount()) {
1071 AddUpdateRect(p_rgn,GetItemRect(p_index));
1072 }
1073 }
1074
1075 COLORREF CListControlImpl::GetSysColorHook(int colorIndex) const {
1076 if (m_darkMode) {
1077 return DarkMode::GetSysColor(colorIndex);
1078 } else {
1079 return GetSysColor(colorIndex);
1080 }
1081 }
1082
1083 BOOL CListControlImpl::OnEraseBkgnd(CDCHandle dc) {
1084
1085 if (paintInProgress()) return FALSE;
1086
1087 CRect rcClient; WIN32_OP_D(GetClientRect(rcClient)); // SPECIAL CASE: No GetClientRectHook() here, fill physical client area, not logical
1088 PaintUtils::FillRectSimple(dc,rcClient,this->GetSysColorHook(COLOR_WINDOW));
1089
1090 return TRUE;
1091 }
1092
1093 t_size CListControlImpl::InsertIndexFromPointEx(const CPoint & pt, bool & bInside) const {
1094 bInside = false;
1095 int y_abs = pt.y + GetViewOffset().y;
1096
1097 if (y_abs >= GetViewAreaHeight()) {
1098 return GetItemCount();
1099 }
1100 size_t itemIdx = IndexFromPointAbs(y_abs);
1101 if (itemIdx == SIZE_MAX) return SIZE_MAX;
1102
1103 {
1104 CRect rc;
1105 if (!this->GetGroupHeaderRectAbs2(itemIdx, rc)) {
1106 if (y_abs >= rc.top && y_abs <= rc.bottom) {
1107 bInside = false;
1108 return itemIdx;
1109 }
1110 }
1111 }
1112 if (itemIdx != SIZE_MAX) {
1113 const CRect rc = GetItemRectAbs(itemIdx);
1114 if (y_abs > rc.top + MulDiv(rc.Height(), 2, 3)) itemIdx++;
1115 else if (y_abs >= rc.top + MulDiv(rc.Height(), 1, 3)) bInside = true;
1116 return itemIdx;
1117 }
1118 return SIZE_MAX;
1119 }
1120
1121 t_size CListControlImpl::InsertIndexFromPoint(const CPoint & pt) const {
1122 bool dummy; return InsertIndexFromPointEx(pt,dummy);
1123 }
1124
1125 COLORREF CListControlImpl::BlendGridColor( COLORREF bk ) {
1126 return BlendGridColor( bk, PaintUtils::DetermineTextColor( bk ) );
1127 }
1128
1129 COLORREF CListControlImpl::BlendGridColor( COLORREF bk, COLORREF tx ) {
1130 return PaintUtils::BlendColor(bk, tx, 10);
1131 }
1132
1133 COLORREF CListControlImpl::GridColor() {
1134 return BlendGridColor( GetSysColorHook(colorBackground), GetSysColorHook(colorText) );
1135 }
1136
1137 void CListControlImpl::RenderItemBackground(CDCHandle p_dc,const CRect & p_itemRect,size_t p_item, uint32_t bkColor) {
1138 switch( this->m_rowStyle ) {
1139 case rowStylePlaylistDelimited:
1140 PaintUtils::RenderItemBackground(p_dc,p_itemRect,p_item,bkColor);
1141 {
1142 auto blend = BlendGridColor(bkColor);
1143 CDCPen pen(p_dc, blend);
1144 SelectObjectScope scope(p_dc, pen);
1145
1146 p_dc.MoveTo( p_itemRect.right-1, p_itemRect.top );
1147 p_dc.LineTo( p_itemRect.right-1, p_itemRect.bottom );
1148 }
1149 break;
1150 case rowStylePlaylist:
1151 PaintUtils::RenderItemBackground(p_dc,p_itemRect,p_item,bkColor);
1152 break;
1153 case rowStyleGrid:
1154 PaintUtils::FillRectSimple(p_dc, p_itemRect, bkColor );
1155 {
1156 auto blend = BlendGridColor(bkColor);
1157 CDCBrush brush(p_dc, blend);
1158 p_dc.FrameRect(&p_itemRect, brush);
1159
1160 }
1161 break;
1162 case rowStyleFlat:
1163 PaintUtils::FillRectSimple(p_dc, p_itemRect, bkColor );
1164 break;
1165 }
1166 }
1167
1168 void CListControlImpl::RenderGroupHeaderBackground(CDCHandle p_dc,const CRect & p_headerRect,int p_group) {
1169 (void)p_group;
1170 const t_uint32 bkColor = GetSysColorHook(colorBackground);
1171 size_t pretendIndex = 0;
1172 switch( this->m_rowStyle ) {
1173 default:
1174 PaintUtils::FillRectSimple( p_dc, p_headerRect, bkColor );
1175 break;
1176 case rowStylePlaylistDelimited:
1177 case rowStylePlaylist:
1178 PaintUtils::RenderItemBackground(p_dc,p_headerRect,pretendIndex,bkColor);
1179 break;
1180 }
1181 }
1182
1183 void CListControlImpl::RenderItem(t_size p_item,const CRect & p_itemRect,const CRect & p_updateRect,CDCHandle p_dc) {
1184 this->RenderItemBackground(p_dc, p_itemRect, p_item, GetSysColorHook(colorBackground) );
1185
1186 DCStateScope backup(p_dc);
1187 p_dc.SetBkMode(TRANSPARENT);
1188 p_dc.SetBkColor(GetSysColorHook(colorBackground));
1189 p_dc.SetTextColor(GetSysColorHook(colorText));
1190
1191 RenderItemText(p_item,p_itemRect,p_updateRect,p_dc, true);
1192 }
1193
1194 void CListControlImpl::RenderGroupHeader2(size_t baseItem,const CRect & p_headerRect,const CRect & p_updateRect,CDCHandle p_dc) {
1195 this->RenderGroupHeaderBackground(p_dc, p_headerRect, 0 );
1196
1197 DCStateScope backup(p_dc);
1198 p_dc.SetBkMode(TRANSPARENT);
1199 p_dc.SetBkColor(GetSysColorHook(colorBackground));
1200 p_dc.SetTextColor(GetSysColorHook(colorHighlight));
1201
1202 RenderGroupHeaderText2(baseItem,p_headerRect,p_updateRect,p_dc);
1203 }
1204
1205
1206 CListControlFontOps::CListControlFontOps() : m_font((HFONT)::GetStockObject(DEFAULT_GUI_FONT)), m_itemHeight(), m_groupHeaderHeight() {
1207 UpdateGroupHeaderFont();
1208 CalculateHeights();
1209 }
1210
1211 void CListControlFontOps::UpdateGroupHeaderFont() {
1212 try {
1213 m_groupHeaderFont = NULL;
1214 LOGFONT lf = {};
1215 WIN32_OP_D( m_font.GetLogFont(lf) );
1216 lf.lfHeight = pfc::rint32( (double) lf.lfHeight * GroupHeaderFontScale() );
1217 lf.lfWeight = GroupHeaderFontWeight(lf.lfWeight);
1218 WIN32_OP_D( m_groupHeaderFont.CreateFontIndirect(&lf) != NULL );
1219 } catch(std::exception const & e) {
1220 (void) e;
1221 // console::print(e.what());
1222 m_groupHeaderFont = (HFONT)::GetStockObject(DEFAULT_GUI_FONT);
1223 }
1224 }
1225
1226 void CListControlFontOps::CalculateHeights() {
1227 const t_uint32 spacing = MulDiv(4, m_dpi.cy, 96);
1228 m_itemHeight = GetFontHeight( m_font ) + spacing;
1229 m_groupHeaderHeight = GetFontHeight( m_groupHeaderFont ) + spacing;
1230 }
1231
1232 void CListControlFontOps::SetFont(HFONT font,bool bUpdateView) {
1233 m_font = font;
1234 UpdateGroupHeaderFont(); CalculateHeights();
1235 OnSetFont(bUpdateView);
1236 if (bUpdateView && m_hWnd != NULL) OnViewAreaChanged();
1237
1238 }
1239
1240 LRESULT CListControlFontOps::OnSetFont(UINT,WPARAM wp,LPARAM,BOOL&) {
1241 SetFont((HFONT)wp);
1242 return 0;
1243 }
1244
1245 LRESULT CListControlFontOps::OnGetFont(UINT,WPARAM,LPARAM,BOOL&) {
1246 return (LRESULT)(HFONT)m_font;
1247 }
1248
1249 LRESULT CListControlImpl::OnGetDlgCode(UINT, WPARAM wp, LPARAM) {
1250 switch(wp) {
1251 case VK_RETURN:
1252 return m_dlgWantEnter ? DLGC_WANTMESSAGE : 0;
1253 default:
1254 SetMsgHandled(FALSE);
1255 return 0;
1256 }
1257 }
1258
1259 HWND CListControlImpl::CreateInDialog(CWindow wndDialog, UINT replaceControlID, CWindow lstReplace) {
1260 PFC_ASSERT(lstReplace != NULL);
1261 auto status = lstReplace.SendMessage(WM_GETDLGCODE, VK_RETURN);
1262 m_dlgWantEnter = (status & DLGC_WANTMESSAGE);
1263 CRect rc;
1264 CWindow wndPrev = wndDialog.GetNextDlgTabItem(lstReplace, TRUE);
1265 WIN32_OP_D(lstReplace.GetWindowRect(&rc));
1266 WIN32_OP_D(wndDialog.ScreenToClient(rc));
1267 WIN32_OP_D(lstReplace.DestroyWindow());
1268 WIN32_OP_D(this->Create(wndDialog, &rc, 0, 0, WS_EX_STATICEDGE, replaceControlID));
1269 if (wndPrev != NULL) this->SetWindowPos(wndPrev, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
1270 // this->BringWindowToTop();
1271 this->SetFont(wndDialog.GetFont());
1272 return m_hWnd;
1273 }
1274
1275 HWND CListControlImpl::CreateInDialog(CWindow wndDialog, UINT replaceControlID ) {
1276 return this->CreateInDialog(wndDialog, replaceControlID, wndDialog.GetDlgItem(replaceControlID));
1277 }
1278
1279
1280 void CListControlImpl::defer(std::function<void() > f) {
1281 m_deferred.push_back( f );
1282 if (!m_defferredMsgPending) {
1283 if ( PostMessage(MSG_EXEC_DEFERRED) ) m_defferredMsgPending = true;
1284 }
1285 }
1286
1287 LRESULT CListControlImpl::OnExecDeferred(UINT, WPARAM, LPARAM) {
1288
1289 for ( ;; ) {
1290 auto i = m_deferred.begin();
1291 if ( i == m_deferred.end() ) break;
1292 auto op = std::move(*i);
1293 m_deferred.erase(i); // erase first, execute later - avoid erratic behavior if op alters the list
1294 op();
1295 }
1296
1297 m_defferredMsgPending = false;
1298 return 0;
1299 }
1300
1301 // ========================================================================================
1302 // Mouse wheel vs drag&drop hacks
1303 // Install MouseHookProc for the duration of DoDragDrop and handle the input from there
1304 // ========================================================================================
1305 static HHOOK g_hook = NULL;
1306 static CListControlImpl * g_dragDropInstance = nullptr;
1307 LRESULT CALLBACK CListControlImpl::MouseHookProc(int nCode, WPARAM wParam, LPARAM lParam) {
1308 if (nCode == HC_ACTION && g_dragDropInstance != nullptr) {
1309 switch (wParam) {
1310 case WM_MOUSEWHEEL:
1311 case WM_MOUSEHWHEEL:
1312 g_dragDropInstance->MouseWheelFromHook((UINT)wParam, lParam);
1313 break;
1314 }
1315 }
1316 return CallNextHookEx(g_hook, nCode, wParam, lParam);
1317 }
1318
1319 bool CListControlImpl::MouseWheelFromHook(UINT msg, LPARAM data) {
1320 MOUSEHOOKSTRUCTEX const * mhs = reinterpret_cast<MOUSEHOOKSTRUCTEX const *> ( data );
1321 if ( ::WindowFromPoint(mhs->pt) != m_hWnd ) return false;
1322 LRESULT dummyResult = 0;
1323 WPARAM wp = mhs->mouseData;
1324 LPARAM lp = MAKELPARAM( mhs->pt.x, mhs->pt.y );
1325 // If we get here, m_suppressMouseWheel should be true per our DoDragDrop()
1326 pfc::vartoggle_t<bool> scope(m_suppressMouseWheel, false);
1327 this->ProcessWindowMessage( m_hWnd, msg, wp, lp, dummyResult );
1328 return true;
1329 }
1330
1331 HRESULT CListControlImpl::DoDragDrop(LPDATAOBJECT pDataObj, LPDROPSOURCE pDropSource, DWORD dwOKEffects, LPDWORD pdwEffect) {
1332 HRESULT ret = E_FAIL;
1333 // Should not get here with non null g_dragDropInstance - means we have a recursive call
1334 PFC_ASSERT(g_dragDropInstance == nullptr);
1335 if ( g_dragDropInstance == nullptr ) {
1336 // futureproofing: kill mouse wheel message processing if we get them delivered the regular way while this is in progress
1337 pfc::vartoggle_t<bool> scope(m_suppressMouseWheel, true);
1338 g_dragDropInstance = this;
1339 g_hook = SetWindowsHookEx(WH_MOUSE, MouseHookProc, NULL, GetCurrentThreadId());
1340 try {
1341 ret = ::DoDragDrop(pDataObj, pDropSource, dwOKEffects, pdwEffect);
1342 } catch (...) {
1343 }
1344 g_dragDropInstance = nullptr;
1345 UnhookWindowsHookEx(pfc::replace_null_t(g_hook));
1346 }
1347 return ret;
1348 }
1349
1350
1351 CPoint CListControlImpl::PointAbsToClient(CPoint pt) const {
1352 return pt - GetViewOffset();
1353 }
1354
1355 CPoint CListControlImpl::PointClientToAbs(CPoint pt) const {
1356 return pt + GetViewOffset();
1357 }
1358
1359 CRect CListControlImpl::RectAbsToClient(CRect rc) const {
1360 CRect ret;
1361 #if 1
1362 ret = rc;
1363 ret.OffsetRect(-GetViewOffset());
1364 #else
1365 ret.TopLeft() = PointAbsToClient(rc.TopLeft());
1366 ret.BottomRight() = PointAbsToClient(rc.BottomRight());
1367 #endif
1368 return ret;
1369 }
1370
1371 CRect CListControlImpl::RectClientToAbs(CRect rc) const {
1372 CRect ret;
1373 #if 1
1374 ret = rc;
1375 ret.OffsetRect(GetViewOffset());
1376 #else
1377 ret.TopLeft() = PointClientToAbs(rc.TopLeft());
1378 ret.BottomRight() = PointAbsToClient(rc.BottomRight());
1379 #endif
1380 return ret;
1381 }
1382
1383 size_t CListControlImpl::ItemFromPoint(CPoint const& pt) const {
1384 size_t ret = SIZE_MAX;
1385 if (!ItemFromPoint(pt, ret)) ret = SIZE_MAX;
1386 return ret;
1387 }
1388
1389 bool CListControlImpl::ItemFromPoint(CPoint const & p_pt, t_size & p_item) const {
1390 return ItemFromPointAbs( PointClientToAbs( p_pt ), p_item);
1391 }
1392
1393 void CListControlImpl::ReloadData() {
1394 this->m_varItemHeights.clear();
1395 this->m_groupHeaders.clear();
1396 OnViewAreaChanged();
1397 }
1398
1399 void CListControlImpl::ReloadItems(pfc::bit_array const & mask) {
1400 bool bReLayout = false;
1401 mask.for_each(true, 0, GetItemCount(), [this, &bReLayout] (size_t idx) {
1402 int hNew = this->GetItemHeight2(idx);
1403 int hOld = -1;
1404 {
1405 auto iter = m_varItemHeights.find(idx);
1406 if (iter != m_varItemHeights.end()) hOld = iter->second;
1407 }
1408 if (hNew != hOld) {
1409 m_varItemHeights[idx] = hNew;
1410 bReLayout = true;
1411 }
1412 });
1413 if (bReLayout) {
1414 OnViewAreaChanged();
1415 } else {
1416 UpdateItems(mask);
1417 }
1418
1419 }
1420
1421 void CListControlImpl::MinGroupHeight2Changed(size_t itemInGroup, bool reloadWhole) {
1422 size_t lo, hi;
1423 if (ResolveGroupRangeCached(itemInGroup, lo, hi)) {
1424 if (reloadWhole) {
1425 CRect rc;
1426 if (this->GetGroupOverlayRectAbs(itemInGroup, rc)) {
1427 this->InvalidateRect(this->RectAbsToClient(rc));
1428 }
1429 {
1430 pfc::bit_array_range range(lo, hi-lo);
1431 this->ReloadItems(range);
1432 }
1433 } else {
1434 this->ReloadItem(hi - 1);
1435 }
1436 }
1437 }
1438
1439 bool CListControlImpl::IsItemFirstInGroupCached(size_t item) const {
1440 return m_groupHeaders.count(item) > 0;
1441 }
1442
1443 bool CListControlImpl::IsItemFirstInGroup(size_t item) const {
1444 if (item == 0) return true;
1445 return GetItemGroup(item) != GetItemGroup(item - 1);
1446 }
1447 bool CListControlImpl::IsItemLastInGroup(size_t item) const {
1448 size_t next = item + 1;
1449 if (next >= GetItemCount()) return true;
1450 return GetItemGroup(item) != GetItemGroup(next);
1451 }
1452
1453 int CListControlImpl::GetItemHeight2(size_t which) const {
1454 if (!IsItemLastInGroup(which)) return -1;
1455
1456 const int minGroupHeight = this->GetMinGroupHeight2(which);
1457 if (minGroupHeight <= 0) return -1;
1458
1459 const int heightNormal = this->GetItemHeight();
1460
1461 const size_t base = FindGroupBase(which);
1462
1463 const int groupHeightWithout = (which > base ? this->GetItemOffsetAbs2(base,which) : 0);
1464
1465 const int minItemHeight = minGroupHeight - groupHeightWithout; // possibly negative
1466
1467 if (minItemHeight > heightNormal) return minItemHeight;
1468 else return -1; // use normal
1469 }
1470
1471 void CListControlImpl::wndSetDarkMode(CWindow wndListControl, bool bDark) {
1472 wndListControl.SendMessage(DarkMode::msgSetDarkMode(), bDark ? 1 : 0);
1473 }
1474
1475 LRESULT CListControlImpl::OnSetDark(UINT, WPARAM wp, LPARAM) {
1476 switch (wp) {
1477 case 0:
1478 this->SetDarkMode(false);
1479 break;
1480 case 1:
1481 this->SetDarkMode(true);
1482 break;
1483 }
1484 return 1;
1485 }
1486
1487 void CListControlImpl::OnItemRemoved(size_t which) {
1488 this->OnItemsRemoved(pfc::bit_array_one(which), GetItemCount() + 1);
1489 }
1490
1491
1492 UINT CListControlImpl::msgSetDarkMode() {
1493 return DarkMode::msgSetDarkMode();
1494 }
1495
1496 void CListControlImpl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) {
1497 (void)nRepCnt; (void)nFlags;
1498 switch (nChar) {
1499 case VK_LEFT:
1500 MoveViewOriginDelta(CPoint(-MulDiv(16, m_dpi.cx, 96), 0));
1501 break;
1502 case VK_RIGHT:
1503 MoveViewOriginDelta(CPoint(MulDiv(16, m_dpi.cx, 96), 0));
1504 break;
1505 default:
1506 SetMsgHandled(FALSE); break;
1507 }
1508 }
1509
1510 void CListControlImpl::OnItemsInserted(size_t at, size_t count, bool bSelect) {
1511 size_t newCount = this->GetItemCount();
1512 this->OnItemsInsertedEx(pfc::bit_array_range(at, count, true), newCount - count, newCount, bSelect);
1513 }