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winamp/Src/Plugins/General/gen_ml/SmoothScrollList.cpp

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Initial community commit
2024-09-24 14:54:57 +02:00
#include "main.h"
#include "../Winamp/gen.h"
#include "../gen_ml/ml.h"
#include "../gen_ml/ml_ipc_0313.h"
#define WM_EX_GETREALLIST (WM_USER + 0x01)
#define WM_EX_UNLOCKREDRAW (WM_USER + 0x02)
#define WM_EX_UPDATESCROLLINFO (WM_USER + 0x03)
#define WM_EX_GETCOUNTPERPAGE (WM_USER + 0x04)
#define LVN_EX_SIZECHANGED (LVN_LAST)
#define IWF_NORMAL 0x0000
#define IWF_ERASE 0x0001
#define IWF_UPDATENOW 0x0002
#define IWF_FRAME 0x0004
typedef enum ScrollPosFlags
{
SPF_NORMAL = 0,
SPF_NOREDRAW = (1 << 0),
SPF_FORCE = (1 << 1),
SPF_RELATIVE = (1 << 2),
} ScrollPosFlags;
DEFINE_ENUM_FLAG_OPERATORS(ScrollPosFlags);
BOOL
CopyListColumnToHeaderItem(const LVCOLUMNW *column, HDITEMW *item);
BOOL
CopyHeaderItemToListColumn(const HDITEMW *item, LVCOLUMNW *column);
typedef enum PostProcessKeyCommands
{
PostProcessKeyCmd_Nothing = 0,
PostProcessKeyCmd_UpdateScrollPos = (1 << 0),
PostProcessKeyCmd_EnsureFocusVisible = (1 << 1),
} PostProcessKeyCommands;
DEFINE_ENUM_FLAG_OPERATORS(PostProcessKeyCommands);
typedef struct SmoothScrollList
{
unsigned int itemHeight;
unsigned int textHeight;
long viewHeight;
unsigned int listFontHeight;
unsigned int headerFontHeight;
int wheelCarryover;
} SmoothScrollList;
#define GetUserData(hwnd) ((SmoothScrollList*)(LONG_PTR)GetWindowLongPtrW(hwnd, GWLP_USERDATA))
static LRESULT
SubclassedListView_CallPrevWndProc(HWND hwnd, unsigned int message, WPARAM wParam, LPARAM lParam)
{
WNDPROC windowProc;
windowProc = (WNDPROC)(LONG_PTR)GetWindowLongPtrW(hwnd,GWLP_USERDATA);
if (NULL == windowProc)
return DefWindowProcW(hwnd, message, wParam, lParam);
return CallWindowProcW(windowProc, hwnd, message,wParam,lParam);
}
static BOOL
GetViewRect(HWND hwnd, RECT *prc)
{
HWND headerWindow;
GetClientRect(hwnd, prc);
headerWindow = GetDlgItem(hwnd, 3);
if (NULL != headerWindow)
{
RECT rh;
GetWindowRect(headerWindow, &rh);
MapWindowPoints(HWND_DESKTOP, headerWindow, ((POINT*)&rh) + 1, 1);
prc->top = rh.bottom;
}
if (prc->right < prc->left)
prc->right = prc->left;
if (prc->bottom < prc->top)
prc->bottom = prc->top;
return TRUE;
}
static int
SmoothScrollList_GetScrollPosFromItem(HWND hwnd, int iItem)
{
HWND listWindow;
RECT listRect, viewRect;
int pos;
int count;
pos = 0;
if (FALSE == GetViewRect(hwnd, &viewRect))
return 0;
listWindow = GetDlgItem(hwnd, 2);
if (NULL == listWindow ||
FALSE == GetWindowRect(listWindow, &listRect))
{
return 0;
}
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&listRect, 2);
count = (int)SendMessageW(listWindow, LVM_GETITEMCOUNT, 0, 0L);
if (0 != count)
{
SmoothScrollList *self;
if (iItem < 0)
iItem = 0;
if (iItem >= count)
iItem = count - 1;
self = GetUserData(hwnd);
if (NULL != self)
pos = iItem * self->itemHeight;
}
pos += (viewRect.top - listRect.top);
return pos;
}
static BOOL
UpdateScrollInfo(HWND hwndView, UINT fFlags, BOOL bRedraw)
{
RECT rv;
HWND hwndList;
SCROLLINFO si;
BOOL needUpdate;
BOOL needRedraw;
HRGN regionUpdate, regionTemp;
SmoothScrollList* s = GetUserData(hwndView);
hwndList = GetDlgItem(hwndView, 2);
if (!s || !hwndList ) return FALSE;
if (FALSE!= bRedraw)
{
GetWindowRect(hwndView, &rv);
MapWindowPoints(HWND_DESKTOP, hwndView, (POINT*)&rv, 2);
regionUpdate = CreateRectRgnIndirect(&rv);
GetClientRect(hwndView, &rv);
regionTemp = CreateRectRgnIndirect(&rv);
CombineRgn(regionUpdate, regionUpdate, regionTemp, RGN_DIFF);
}
else
{
regionUpdate = NULL;
regionTemp = NULL;
}
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
if (!GetScrollInfo(hwndView, SB_VERT, &si))
return FALSE;
if (FALSE == GetViewRect(hwndView, &rv))
SetRectEmpty(&rv);
needUpdate = FALSE;
needRedraw = FALSE;
if (SIF_RANGE & fFlags)
{
unsigned int count, nPage, nMax;
nPage = rv.bottom - rv.top;
count = (INT)SendMessageW(hwndList, LVM_GETITEMCOUNT, 0, 0L);
nMax = count * s->itemHeight;
if (si.nPage != nPage || si.nMax != nMax)
{
BOOL forcePos;
unsigned int windowStyle;
si.fMask = SIF_PAGE | SIF_RANGE;
si.nPage = nPage;
si.nMax = nMax;
windowStyle = GetWindowLongPtrW(hwndView, GWL_STYLE);
SetScrollInfo(hwndView, SB_VERT, &si, FALSE);
needUpdate = TRUE;
needRedraw = FALSE;
forcePos = FALSE;
if (nPage >= nMax &&
0 != (WS_VSCROLL & windowStyle))
{
SetWindowLongPtrW(hwndView, GWL_STYLE, windowStyle & ~WS_VSCROLL);
RECT rc;
HWND hwndHeader;
// MLSkinnedScrollWnd_UpdateBars(hwndView, bRedraw);
GetClientRect(hwndView, &rc);
hwndHeader = GetDlgItem(hwndView, 3);
if (hwndHeader)
{
HDLAYOUT headerLayout;
WINDOWPOS headerPos;
headerLayout.prc = &rc;
headerLayout.pwpos = &headerPos;
if (FALSE != SendMessageW(hwndHeader, HDM_LAYOUT, 0, (LPARAM)&headerLayout))
{
headerPos.flags |= SWP_NOREDRAW | SWP_NOCOPYBITS;
headerPos.flags &= ~SWP_NOZORDER;
headerPos.hwndInsertAfter = HWND_TOP;
SetWindowPos(hwndHeader, headerPos.hwndInsertAfter, headerPos.x, headerPos.y,
headerPos.cx, headerPos.cy, headerPos.flags);
InvalidateRect(hwndHeader, NULL, FALSE);
}
}
rv.right = rc.right;
forcePos = TRUE;
needUpdate = FALSE;
needRedraw = TRUE;
}
if (nPage >= nMax || forcePos)
{
RECT rl;
GetWindowRect(hwndList, &rl);
MapWindowPoints(HWND_DESKTOP, hwndView, (POINT*)&rl, 2);
if (rv.top != rl.top || forcePos)
{
SetWindowPos(hwndList, NULL, rv.left, rv.top, rv.right - rv.left, rv.bottom - rv.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW | SWP_NOCOPYBITS);
needRedraw = TRUE;
}
}
}
}
if (SIF_POS & fFlags)
{
INT nTop;
nTop = (INT)SendMessageW(hwndList, LVM_GETTOPINDEX, 0, 0L);
nTop = SmoothScrollList_GetScrollPosFromItem(hwndView, nTop);
if(si.nMax > 0)
{
if (nTop >= (si.nMax - (int)si.nPage))
nTop = (si.nMax - si.nPage) + 1;
}
else
nTop = 0;
if (nTop < si.nMin)
nTop = si.nMin;
if (si.nPos != nTop)
{
si.fMask = SIF_POS;
si.nPos = nTop;
SetScrollInfo(hwndView, SB_VERT, &si, (FALSE == needRedraw && FALSE != bRedraw));
needUpdate = TRUE;
}
}
if (FALSE != needUpdate)
MLSkinnedScrollWnd_UpdateBars(hwndView, (FALSE == needRedraw && FALSE != bRedraw));
if (FALSE != bRedraw && FALSE != needRedraw)
{
HRGN regionTemp2;
GetWindowRect(hwndView, &rv);
MapWindowPoints(HWND_DESKTOP, hwndView, (POINT*)&rv, 2);
SetRectRgn(regionTemp, rv.left, rv.top, rv.right, rv.bottom);
GetClientRect(hwndView, &rv);
regionTemp2 = CreateRectRgnIndirect(&rv);
CombineRgn(regionTemp, regionTemp, regionTemp2, RGN_DIFF);
CombineRgn(regionUpdate, regionUpdate, regionTemp, RGN_OR);
DeleteObject(regionTemp2);
RedrawWindow(hwndView, NULL, regionUpdate, RDW_INVALIDATE | RDW_ALLCHILDREN | RDW_FRAME);
}
if (NULL != regionUpdate)
DeleteObject(regionUpdate);
if (NULL != regionTemp)
DeleteObject(regionTemp);
return TRUE;
}
static BOOL
SmoothScrollList_SetScrollPos(HWND hwnd, int position, ScrollPosFlags flags)
{
SmoothScrollList *self;
HWND listWindow;
BOOL invalidate, failed;
unsigned long viewStyle;
int y, scrollPos;
RECT rv, rl;
SCROLLINFO si;
listWindow = GetDlgItem(hwnd, 2);
if (NULL == listWindow)
return FALSE;
self = GetUserData(hwnd);
if (NULL == self)
return FALSE;
si.cbSize = sizeof(si);
si.fMask = SIF_POS | SIF_RANGE | SIF_PAGE;
if (FALSE == GetScrollInfo(hwnd, SB_VERT, &si))
return FALSE;
scrollPos = si.nPos;
viewStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
invalidate = FALSE;
failed = FALSE;
y = 0;
if (0 != (SPF_RELATIVE & flags))
{
position = si.nPos + position;
if (si.nPos > (si.nMax - (int)si.nPage))
position -= (si.nPos - (si.nMax - (int)si.nPage));
}
if (position < si.nMin)
position = si.nMin;
if (position > (si.nMax - (INT)si.nPage + 1))
position = si.nMax - si.nPage + 1;
if (position == si.nPos && 0 == (SPF_FORCE & flags))
return TRUE;
if (FALSE == GetViewRect(hwnd, &rv))
SetRectEmpty(&rv);
if (FALSE == GetWindowRect(listWindow, &rl))
SetRectEmpty(&rl);
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&rl, 2);
if (0 != (WS_VISIBLE & viewStyle))
SetWindowLongPtrW(hwnd, GWL_STYLE, viewStyle & ~WS_VISIBLE);
if (si.nMin == position)
{
if (rl.top != rv.top || rl.bottom != rv.bottom || rl.left != rv.left || rl.right != rv.right)
{
SetWindowPos(listWindow, NULL, rv.left, rv.top, rv.right - rv.left, rv.bottom - rv.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW | SWP_NOCOPYBITS);
invalidate = TRUE;
}
if (0 != (int)SendMessageW(listWindow, LVM_GETITEMCOUNT, 0, 0L))
{
RECT rect;
rect.left = LVIR_BOUNDS;
if (FALSE != SendMessageW(listWindow, LVM_GETITEMRECT, 0, (LPARAM)&rect) &&
0 != rect.top)
{
int scrollY;
scrollY = rect.top;
failed = !SendMessageW(listWindow, LVM_SCROLL, 0, scrollY);
invalidate = TRUE;
}
}
}
else
{
int iTop, iPos;
iTop = (int)SendMessageW(listWindow, LVM_GETTOPINDEX, 0, 0L);
if (position > (si.nMax - (int)si.nPage))
position = (si.nMax - si.nPage);
iPos = position/self->itemHeight;
y = (position - iPos*self->itemHeight);
if (iTop > iPos)
{
failed = !SendMessageW(listWindow, LVM_SCROLL, 0, (iPos - iTop) * self->itemHeight);
invalidate = TRUE;
}
if (rl.top != rv.top + y || rl.bottom != rv.bottom || rl.left != rv.left || rl.right != rv.right)
{
SetWindowPos(listWindow, NULL, rv.left, rv.top - y, rv.right - rv.left, rv.bottom - rv.top + y,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW | SWP_NOCOPYBITS);
invalidate = TRUE;
}
if (iTop < iPos)
{
failed = !SendMessageW(listWindow, LVM_SCROLL, 0, (iPos - iTop)*self->itemHeight);
invalidate = TRUE;
}
}
if (FALSE == failed)
{
if (position == si.nMax - si.nPage && 0 != si.nMax)
position++;
if (scrollPos != position)
{
si.nPos = position;
si.fMask = SIF_POS;
SetScrollInfo(hwnd, SB_VERT, &si, (0 == (SPF_NOREDRAW & flags)));
}
}
if (0 != (WS_VISIBLE & viewStyle))
{
viewStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 == (WS_VISIBLE & viewStyle))
{
viewStyle |= WS_VISIBLE;
SetWindowLongPtrW(hwnd, GWL_STYLE, viewStyle);
}
if (0 == (SPF_NOREDRAW & flags) &&
FALSE != invalidate)
{
InvalidateRect(listWindow, NULL, TRUE);
}
}
return TRUE;
}
static BOOL
SmoothScrollList_EnsureVisible(HWND hwnd, int iItem, BOOL partialOk)
{
int itemTop, itemBottom;
int pageTop, pageBottom, delta;
SCROLLINFO scrollInfo;
SmoothScrollList *self;
if (NULL == hwnd || iItem < 0)
return FALSE;
self = GetUserData(hwnd);
if (NULL == self)
return FALSE;
scrollInfo.cbSize = sizeof(scrollInfo);
scrollInfo.fMask = SIF_POS | SIF_PAGE;
if (FALSE == GetScrollInfo(hwnd, SB_VERT, &scrollInfo))
return FALSE;
itemTop = iItem * self->itemHeight;
itemBottom = itemTop + self->itemHeight;
pageTop = scrollInfo.nPos;
pageBottom = pageTop + scrollInfo.nPage;
if (FALSE != partialOk)
{
if (itemTop < pageBottom &&
itemBottom > pageTop)
{
return TRUE;
}
}
else
{
if (itemTop >= pageTop &&
itemBottom <= pageBottom)
{
return TRUE;
}
}
if (itemTop < pageTop)
delta = itemTop - pageTop;
else
{
delta = itemBottom - pageBottom;
if ((itemTop - delta) < pageTop)
delta = itemTop - pageTop;
}
if (FALSE == SmoothScrollList_SetScrollPos(hwnd, delta, SPF_RELATIVE | SPF_FORCE))
return FALSE;
MLSkinnedScrollWnd_UpdateBars(hwnd, TRUE);
return TRUE;
}
static BOOL
SmoothScrollList_PreProcessKey(HWND hwnd, unsigned int vKey, unsigned int keyFlags, PostProcessKeyCommands *postProcessCommands)
{
HWND listWindow;
RECT viewRect;
SmoothScrollList *self;
int iItem, iNextItem, count;
BOOL shortView;
if (NULL != postProcessCommands)
*postProcessCommands = PostProcessKeyCmd_Nothing;
switch(vKey)
{
case VK_UP:
case VK_DOWN:
case VK_HOME:
case VK_END:
case VK_PRIOR:
case VK_NEXT:
break;
default:
return TRUE;
}
if (NULL == hwnd || FALSE == GetViewRect(hwnd, &viewRect))
return FALSE;
self = GetUserData(hwnd);
if (NULL == self)
return FALSE;
listWindow = GetDlgItem(hwnd, 2);
if (NULL == listWindow)
return FALSE;
iItem = (int)SendMessageW(listWindow, LVM_GETNEXTITEM, (WPARAM)-1, (LPARAM)(LVNI_ALL | LVNI_FOCUSED));
if (-1 == iItem)
return FALSE;
count = (int)SendMessageW(listWindow, LVM_GETITEMCOUNT, 0, 0L);
iNextItem = iItem;
shortView = ((viewRect.bottom - viewRect.top) < (long)self->itemHeight);
switch(vKey)
{
case VK_UP:
if (iNextItem > 0)
iNextItem--;
if (FALSE != shortView)
{
if (NULL != postProcessCommands)
*postProcessCommands |= PostProcessKeyCmd_EnsureFocusVisible;
}
break;
case VK_DOWN:
if (FALSE == shortView)
{
if ((iNextItem + 1) < count)
iNextItem++;
}
else
{
if (NULL != postProcessCommands)
*postProcessCommands |= PostProcessKeyCmd_EnsureFocusVisible;
}
break;
case VK_HOME:
if (FALSE == shortView)
{
iNextItem = 0;
}
else
{
iNextItem = 1;
if (NULL != postProcessCommands)
*postProcessCommands |= PostProcessKeyCmd_UpdateScrollPos;
}
break;
case VK_END:
if (FALSE == shortView)
{
iNextItem = count - 1;
}
else
{
iNextItem = -1;
if (NULL != postProcessCommands)
*postProcessCommands |= PostProcessKeyCmd_EnsureFocusVisible;
}
break;
case VK_PRIOR:
{
RECT listRect;
GetWindowRect(listWindow, &listRect);
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&listRect, 2);
if (listRect.top != viewRect.top)
SmoothScrollList_SetScrollPos(hwnd, listRect.top - viewRect.top, SPF_RELATIVE);
if (FALSE == shortView)
{
iNextItem = (viewRect.bottom - viewRect.top)/self->itemHeight;
iNextItem = iItem - iNextItem;
if (iNextItem < 0)
iNextItem = 0;
}
else
{
if (0 == iItem)
iNextItem = 1;
if (NULL != postProcessCommands)
*postProcessCommands |= PostProcessKeyCmd_UpdateScrollPos;
}
}
break;
case VK_NEXT:
{
RECT listRect;
int reminder;
GetWindowRect(listWindow, &listRect);
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&listRect, 2);
reminder = (listRect.bottom - listRect.top)%self->itemHeight;
if (0 != reminder)
SmoothScrollList_SetScrollPos(hwnd, self->itemHeight - reminder, SPF_RELATIVE);
if (FALSE == shortView)
{
iNextItem = (viewRect.bottom - viewRect.top)/self->itemHeight;
iNextItem = iItem + iNextItem;
if (iNextItem >= count)
iNextItem = count - 1;
}
else
{
if (NULL != postProcessCommands)
*postProcessCommands |= (PostProcessKeyCmd_UpdateScrollPos | PostProcessKeyCmd_EnsureFocusVisible);
}
}
break;
}
if (iNextItem >= 0 && iNextItem < count)
SmoothScrollList_EnsureVisible(hwnd, iNextItem, FALSE);
return TRUE;
}
static void
SmoothScrollList_PostProcessKey(HWND hwnd, unsigned int vKey, unsigned int keyFlags, PostProcessKeyCommands processCommands)
{
if (0 != (PostProcessKeyCmd_UpdateScrollPos & processCommands))
UpdateScrollInfo(hwnd, SIF_POS, TRUE);
if (0 != (PostProcessKeyCmd_EnsureFocusVisible & processCommands))
{
HWND listWindow = GetDlgItem(hwnd, 2);
if (NULL != listWindow)
{
int iItem = (int)SendMessageW(listWindow, LVM_GETNEXTITEM, (WPARAM)-1, (LPARAM)(LVNI_ALL | LVNI_FOCUSED));
if (-1 != iItem)
{
SmoothScrollList_EnsureVisible(hwnd, iItem, FALSE);
}
}
}
}
static void
SmoothScrollList_UpdateFontMetrics(HWND hwnd, BOOL redraw)
{
SmoothScrollList *self;
HWND controlWindow;
unsigned int windowStyle;
HFONT font, prevFont;
HDC hdc;
TEXTMETRICW textMetrics;
unsigned int fontHeight;
self = GetUserData(hwnd);
if (NULL == self)
return;
windowStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
if(0 != (WS_VISIBLE & windowStyle))
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle & ~WS_VISIBLE);
hdc = GetDCEx(hwnd, NULL, DCX_CACHE | DCX_NORESETATTRS);
if (NULL != hdc)
prevFont = (HFONT)GetCurrentObject(hdc, OBJ_FONT);
else
prevFont = NULL;
controlWindow = GetDlgItem(hwnd, 3);
if (NULL != controlWindow)
{
font = (HFONT)SendMessageW(controlWindow, WM_GETFONT, 0, 0L);
fontHeight = 0;
if (NULL != hdc)
{
SelectObject(hdc, font);
if (FALSE != GetTextMetricsW(hdc, &textMetrics))
fontHeight = textMetrics.tmHeight;
}
if (self->headerFontHeight != fontHeight)
{
self->headerFontHeight = fontHeight;
MLSkinnedHeader_SetHeight(controlWindow, -1);
}
}
controlWindow = GetDlgItem(hwnd, 2);
if (NULL != controlWindow)
{
font = (HFONT)SendMessageW(controlWindow, WM_GETFONT, 0, 0L);
fontHeight = 0;
if (NULL != hdc)
{
SelectObject(hdc, font);
if (FALSE != GetTextMetricsW(hdc, &textMetrics))
fontHeight = textMetrics.tmHeight;
}
if (self->listFontHeight != fontHeight)
{
self->listFontHeight = fontHeight;
SmoothScrollList_SetScrollPos(hwnd, 0, SPF_NOREDRAW | SPF_FORCE);
MLSkinnedScrollWnd_UpdateBars(hwnd, FALSE);
}
}
if (NULL != hdc)
{
SelectObject(hdc, prevFont);
ReleaseDC(hwnd, hdc);
}
if (0 != (WS_VISIBLE & windowStyle))
{
windowStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
if (0 == (WS_VISIBLE & windowStyle))
{
windowStyle |= WS_VISIBLE;
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle);
}
if (FALSE != redraw)
RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN);
}
}
static HHOOK hook = NULL;
static HWND hwndToMonitor = NULL;
static LRESULT CALLBACK HookProc(int nCode, WPARAM wParam, LPARAM lParam)
{
MSG *pMsg = (MSG*)lParam;
if (pMsg->hwnd == hwndToMonitor)
{
static INT lastScrollPos = -1;
switch(pMsg->message)
{
case WM_LBUTTONUP:
case WM_RBUTTONUP:
{
LRESULT result = CallNextHookEx(hook, nCode, wParam, lParam);
UnhookWindowsHookEx(hook);
hwndToMonitor = NULL;
hook = NULL;
lastScrollPos = -1;
return result;
}
case WM_MOUSEMOVE:
if ((MK_LBUTTON | MK_RBUTTON) & pMsg->wParam)
{
RECT rw;
POINTS pts(MAKEPOINTS(pMsg->lParam));
POINT pt;
POINTSTOPOINT(pt, pts);
MapWindowPoints(pMsg->hwnd, HWND_DESKTOP, &pt, 1);
GetWindowRect(pMsg->hwnd, &rw);
if (pt.y < rw.top || pt.y > rw.bottom)
{
HWND hwndParent = GetParent(pMsg->hwnd);
if (hwndParent)
{
SCROLLINFO si;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_RANGE | SIF_POS | SIF_PAGE;
if (GetScrollInfo(hwndParent, SB_VERT, &si))
{
if ((si.nPos > si.nMin && pt.y < rw.top) || (si.nPos <= (si.nMax - (INT)si.nPage) && pt.y > rw.bottom))
{
LRESULT result;
if (lastScrollPos == si.nPos)
{
result = CallNextHookEx(hook, nCode, wParam, lParam);
SmoothScrollList_SetScrollPos(hwndParent, (pt.y < rw.top) ? --si.nPos : ++si.nPos, SPF_NORMAL);
}
else
{
unsigned long windowStyle;
windowStyle = GetWindowLongPtrW(hwndParent, GWL_STYLE);
if (0 != (WS_VISIBLE & windowStyle))
SetWindowLongPtrW(hwndParent, GWL_STYLE, windowStyle & ~WS_VISIBLE);
result = CallNextHookEx(hook, nCode, wParam, lParam);
PostMessageW(hwndParent, WM_EX_UPDATESCROLLINFO, SIF_POS, TRUE);
if (0 != (WS_VISIBLE & windowStyle))
PostMessageW(hwndParent, WM_EX_UNLOCKREDRAW, IWF_UPDATENOW | IWF_FRAME, 0L);
}
lastScrollPos = si.nPos;
return result;
}
}
}
}
SleepEx(1, TRUE);
}
break;
}
}
return CallNextHookEx(hook, nCode, wParam, lParam);
}
static LRESULT CALLBACK ListViewSubclass(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
if(uMsg == WM_MOUSEMOVE ||
uMsg == WM_LBUTTONDOWN)
{
LVHITTESTINFO ht = {{LOWORD(lParam),HIWORD(lParam)},LVHT_ONITEM,-1,0};
int item = ListView_SubItemHitTest(hwnd, &ht);
{
RECT r={0};
ListView_GetItemRect(hwnd,item,&r,LVIR_BOUNDS);
ht.pt.x -= r.left;
ht.pt.y -= r.top;
typedef struct {
int x,y,item;
HWND hwnd;
UINT msg;
} hitinfo;
hitinfo info = {
ht.pt.x, ht.pt.y, item, hwnd, uMsg,
};
SendMessage(GetParent(GetParent(hwnd)),WM_USER+700,(WPARAM)&info,0);
}
}
switch(uMsg)
{
case WM_HSCROLL:
case WM_VSCROLL:
case WM_MOUSEWHEEL:
{
HWND parentWindow;
KillTimer(hwnd, 43);
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
return SendMessageW(parentWindow, uMsg, wParam, lParam);
}
break;
case WM_TIMER:
if (43 == wParam)
{
HWND parentWindow;
KillTimer(hwnd, wParam);
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
{
int iFocused = (int)SendMessageW(hwnd, LVM_GETNEXTITEM, (WPARAM)-1, (LPARAM)(LVNI_ALL | LVNI_FOCUSED));
if (-1 != iFocused)
SmoothScrollList_EnsureVisible(parentWindow, iFocused, FALSE);
return 0;
}
}
break;
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_XBUTTONDOWN:
hwndToMonitor = hwnd;
hook = SetWindowsHookEx(WH_MSGFILTER, HookProc, NULL, GetCurrentThreadId());
{
unsigned int windowStyle;
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 != (LVS_OWNERDRAWFIXED & windowStyle))
{
LRESULT result;
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle & ~LVS_OWNERDRAWFIXED);
result = SubclassedListView_CallPrevWndProc(hwnd, uMsg, wParam, lParam);
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 == (LVS_OWNERDRAWFIXED & windowStyle))
{
windowStyle |= LVS_OWNERDRAWFIXED;
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle);
}
return result;
}
}
break;
case WM_KEYDOWN:
{
HWND parentWindow;
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
{
PostProcessKeyCommands postProcessKeyCommands;
if (FALSE == SmoothScrollList_PreProcessKey(parentWindow,
(unsigned int)wParam,
(unsigned int)lParam,
&postProcessKeyCommands))
{
postProcessKeyCommands = PostProcessKeyCmd_UpdateScrollPos;
}
SubclassedListView_CallPrevWndProc(hwnd, uMsg, wParam, lParam);
SmoothScrollList_PostProcessKey(parentWindow,
(unsigned int)wParam,
(unsigned int)lParam,
postProcessKeyCommands);
return 0;
}
}
break;
case WM_CHAR:
case WM_UNICHAR:
{
HWND parentWindow;
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
{
int iFocused;
unsigned int windowStyle;
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 != (WS_VISIBLE & windowStyle))
SetWindowLongPtr(hwnd, GWL_STYLE, windowStyle & ~WS_VISIBLE);
SubclassedListView_CallPrevWndProc(hwnd, uMsg, wParam, lParam);
iFocused = (int)SendMessageW(hwnd, LVM_GETNEXTITEM, (WPARAM)-1, (LPARAM)(LVNI_ALL | LVNI_FOCUSED));
if (-1 != iFocused)
SmoothScrollList_EnsureVisible(parentWindow, iFocused, FALSE);
if (0 != (WS_VISIBLE & windowStyle))
{
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
windowStyle |= WS_VISIBLE;
SetWindowLongPtr(hwnd, GWL_STYLE, windowStyle);
}
InvalidateRect(hwnd, NULL, FALSE);
return 0;
}
}
break;
case LVM_ENSUREVISIBLE:
{
HWND parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
return SmoothScrollList_EnsureVisible(parentWindow, (int)wParam, (BOOL)lParam);
}
break;
}
return SubclassedListView_CallPrevWndProc(hwnd, uMsg, wParam, lParam);
}
static LRESULT
SmoothScrollList_OnCreate(HWND hwnd, CREATESTRUCT *createStruct)
{
HWND hwndList, hwndHeader;
MLSKINWINDOW m = {0};
RECT rc;
DWORD style;
SmoothScrollList *self = (SmoothScrollList *)calloc(1, sizeof(SmoothScrollList));
if (NULL == self)
return -1;
self->itemHeight = 1;
self->textHeight = 1;
SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONGX86)(LONG_PTR)self);
m.skinType = SKINNEDWND_TYPE_SCROLLWND;
m.style = SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS;
m.hwndToSkin = hwnd;
MLSkinWindow(g_hwnd, &m);
SetScrollRange(hwnd, SB_VERT, 0, 0, FALSE);
MLSkinnedScrollWnd_UpdateBars(hwnd, FALSE);
if (FALSE == GetClientRect(hwnd, &rc))
SetRectEmpty(&rc);
style = WS_CLIPSIBLINGS | WS_CHILD | WS_VISIBLE | HDS_BUTTONS | HDS_FULLDRAG;
hwndHeader = CreateWindowExW(WS_EX_NOPARENTNOTIFY, WC_HEADERW, NULL, style,
0, 0, rc.right - rc.left, 0, hwnd, (HMENU)3,0,0);
if (NULL != hwndHeader)
{
m.hwndToSkin = hwndHeader;
m.skinType = SKINNEDWND_TYPE_HEADER;
m.style = SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS;
MLSkinWindow(g_hwnd, &m);
}
style = WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_CHILD | WS_TABSTOP | WS_VISIBLE |
LVS_REPORT | LVS_SHOWSELALWAYS | LVS_OWNERDRAWFIXED | LVS_OWNERDATA | LVS_NOCOLUMNHEADER;
hwndList = CreateWindowExW(WS_EX_NOPARENTNOTIFY, WC_LISTVIEWW, NULL, style,
0, 0, rc.right - rc.left, rc.bottom - rc.top, hwnd,(HMENU)2,0,0);
if (NULL != hwndList)
{
WNDPROC oldp = (WNDPROC)(LONG_PTR)SetWindowLongPtrW(hwndList, GWLP_WNDPROC, (LONGX86)(LONG_PTR)ListViewSubclass);
SetWindowLongPtrW(hwndList,GWLP_USERDATA, (LONGX86)(LONG_PTR)oldp);
if(NULL != hwndHeader)
SetWindowPos(hwndHeader, hwndList, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
m.skinType = SKINNEDWND_TYPE_LISTVIEW;
m.hwndToSkin = hwndList;
m.style = SWS_USESKINFONT | SWS_USESKINCOLORS | SWS_USESKINCURSORS |
SWLVS_FULLROWSELECT | SWLVS_DOUBLEBUFFER | SWLVS_ALTERNATEITEMS;
MLSkinWindow(g_hwnd, &m);
MLSkinnedScrollWnd_SetMode(hwndList, SCROLLMODE_STANDARD);
MLSkinnedScrollWnd_ShowHorzBar(hwndList, FALSE);
MLSkinnedScrollWnd_ShowVertBar(hwndList, FALSE);
}
SmoothScrollList_UpdateFontMetrics(hwnd, FALSE);
return 0;
}
static void
SmoothScrollList_OnDestroy(HWND hwnd)
{
SmoothScrollList *self;
self = (SmoothScrollList*)(LONG_PTR)SetWindowLongPtrW(hwnd, GWLP_USERDATA, 0);
if (NULL == self)
return;
free(self);
}
static void
SmoothScrollList_OnWindowPosChanged(HWND hwnd, WINDOWPOS *windowPos)
{
HWND controlWindow;
RECT rect;
long clientWidth;
HWND parentWindow;
SmoothScrollList *self;
if ((SWP_NOSIZE | SWP_NOMOVE) == ((SWP_NOSIZE | SWP_NOMOVE | SWP_FRAMECHANGED) & windowPos->flags))
return;
self = GetUserData(hwnd);
if (NULL == self)
return;
if (FALSE == GetClientRect(hwnd, &rect))
return;
clientWidth = rect.right - rect.left;
controlWindow = GetDlgItem(hwnd, 3);
if (NULL != controlWindow)
{
HDLAYOUT headerLayout;
WINDOWPOS headerPos;
headerLayout.prc = &rect;
headerLayout.pwpos = &headerPos;
if (FALSE != SendMessageW(controlWindow, HDM_LAYOUT, 0, (LPARAM)&headerLayout))
{
headerPos.flags |= ((SWP_NOREDRAW | SWP_NOCOPYBITS) & windowPos->flags);
headerPos.flags &= ~SWP_NOZORDER;
headerPos.hwndInsertAfter = HWND_TOP;
SetWindowPos(controlWindow, headerPos.hwndInsertAfter, headerPos.x, headerPos.y,
headerPos.cx, headerPos.cy, headerPos.flags);
}
}
if (self->viewHeight != windowPos->cy ||
0 != (SWP_FRAMECHANGED & windowPos->flags))
{
ScrollPosFlags scrollFlags;
scrollFlags = SPF_FORCE | SPF_RELATIVE;
if (0 != (SWP_NOREDRAW & windowPos->flags))
scrollFlags |= SPF_NOREDRAW;
self->viewHeight = windowPos->cy;
UpdateScrollInfo(hwnd, SIF_RANGE | SIF_POS, TRUE);
SmoothScrollList_SetScrollPos(hwnd, 0, scrollFlags);
}
else
{
controlWindow = GetDlgItem(hwnd, 2);
if (NULL != controlWindow)
{
if (FALSE != GetWindowRect(controlWindow, &rect) &&
(rect.right - rect.left) != clientWidth)
{
SetWindowPos(controlWindow, NULL, 0, 0, clientWidth, rect.bottom - rect.top,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | ((SWP_NOREDRAW | SWP_NOCOPYBITS) & windowPos->flags));
}
}
}
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
{
NMHDR hdr;
hdr.code = LVN_EX_SIZECHANGED;
hdr.hwndFrom = hwnd;
hdr.idFrom = GetWindowLongPtrW(hwnd, GWLP_ID);
SendMessageW(parentWindow, WM_NOTIFY, hdr.idFrom, (LPARAM)&hdr);
}
}
static void
SmoothScrollList_OnMouseWheel(HWND hwnd, INT virtualKeys, INT distance, LONG pointer_s)
{
SmoothScrollList *self;
int pos;
unsigned int wheelScroll;
int scrollLines;
KillTimer(hwnd, 43);
self = GetUserData(hwnd);
if (NULL == self)
return;
if (FALSE == SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &wheelScroll, 0))
wheelScroll = 3;
if (0 == wheelScroll)
return;
if (WHEEL_PAGESCROLL == wheelScroll)
{
SendMessageW(hwnd, WM_VSCROLL, MAKEWPARAM(((distance > 0) ? SB_PAGEUP : SB_PAGEDOWN), 0), 0L);
SendMessageW(hwnd, WM_VSCROLL, MAKEWPARAM(SB_ENDSCROLL, 0), 0L);
return;
}
distance += self->wheelCarryover;
scrollLines = distance * (int)wheelScroll / WHEEL_DELTA;
self->wheelCarryover = distance - scrollLines * WHEEL_DELTA / (int)wheelScroll;
pos = scrollLines * (int)self->textHeight;
SmoothScrollList_SetScrollPos(hwnd, -pos, SPF_RELATIVE | SPF_NORMAL);
MLSkinnedScrollWnd_UpdateBars(hwnd, TRUE);
}
static void
SmoothScrollList_OnVertScroll(HWND hwnd, INT actionLayout, INT trackPosition, HWND scrollBar)
{
SmoothScrollList *s;
SCROLLINFO si;
int pos;
ScrollPosFlags scrollFlags;
unsigned int lineHeight;
KillTimer(hwnd, 43);
s = GetUserData(hwnd);
if (NULL == s)
return;
si.cbSize =sizeof(si);
si.fMask = SIF_PAGE | SIF_POS | SIF_TRACKPOS | SIF_RANGE;
if (FALSE == GetScrollInfo(hwnd, SB_VERT, &si))
return;
scrollFlags = SPF_NORMAL;
if (si.nPos > (si.nMax - (INT)si.nPage))
si.nPos = si.nMax - si.nPage;
lineHeight = s->textHeight * 3;
if (lineHeight > s->itemHeight)
lineHeight = s->itemHeight;
if (lineHeight > si.nPage)
lineHeight = si.nPage;
switch(actionLayout)
{
case SB_TOP: pos = si.nMin; break;
case SB_BOTTOM: pos = si.nMax; break;
case SB_LINEDOWN: pos = si.nPos + lineHeight; break;
case SB_LINEUP: pos = si.nPos - lineHeight; break;
case SB_PAGEDOWN: pos = si.nPos + (si.nPage / s->itemHeight) * s->itemHeight; break;
case SB_PAGEUP: pos = si.nPos - (si.nPage / s->itemHeight) * s->itemHeight; break;
case SB_THUMBPOSITION:
case SB_THUMBTRACK: pos = si.nTrackPos; scrollFlags |= SPF_FORCE; break;
case SB_ENDSCROLL: MLSkinnedScrollWnd_UpdateBars(hwnd, TRUE); return;
default: pos = si.nPos;
}
SmoothScrollList_SetScrollPos(hwnd, pos, scrollFlags);
}
static LRESULT
SmoothScrollList_OnMeasureItem(HWND hwnd, MEASUREITEMSTRUCT *measureItem)
{
LRESULT result;
HWND parentWindow;
SmoothScrollList *self;
unsigned int itemHeight, textHeight;
BOOL updateScroll;
if(2 != measureItem->CtlID)
return FALSE;
self = GetUserData(hwnd);
updateScroll = FALSE;
itemHeight = measureItem->itemHeight;
parentWindow = GetAncestor(hwnd, GA_PARENT);
if (NULL != parentWindow)
{
measureItem->CtlID = GetWindowLongPtrW(hwnd, GWLP_ID);
result = SendMessageW(parentWindow, WM_MEASUREITEM, measureItem->CtlID, (LPARAM)measureItem);
itemHeight = measureItem->itemHeight;
}
else
result = 0;
textHeight = 12;
HDC hdc = GetDCEx(hwnd, NULL, DCX_CACHE | DCX_NORESETATTRS);
if (NULL != hdc)
{
HFONT font, fontPrev;
TEXTMETRIC textMetrics;
font = (HFONT)SendMessageW(hwnd, WM_GETFONT, 0, 0L);
fontPrev = (HFONT)SelectObject(hdc, font);
if (FALSE != GetTextMetrics(hdc, &textMetrics))
textHeight = textMetrics.tmHeight;
SelectObject(hdc, fontPrev);
ReleaseDC(hwnd, hdc);
}
if (NULL != self)
{
if (self->itemHeight != itemHeight)
{
SmoothScrollList_SetScrollPos(hwnd, 0, SPF_NOREDRAW);
self->itemHeight = itemHeight;
updateScroll = TRUE;
}
if (self->textHeight != textHeight)
{
self->textHeight = textHeight;
updateScroll = TRUE;
}
}
if (FALSE != updateScroll)
{
UpdateScrollInfo(hwnd, SIF_RANGE | SIF_POS, TRUE);
}
return result;
}
static void
SmoothScrollList_OnSetFont(HWND hwnd, HFONT font, BOOL redraw)
{
if (0 == (SWS_USESKINFONT & MLSkinnedWnd_GetStyle(hwnd)))
{
HWND controlWindow;
controlWindow = GetDlgItem(hwnd,3);
if (NULL != controlWindow)
SendMessageW(controlWindow, WM_SETFONT, (WPARAM)font, MAKELPARAM(0, 0L));
controlWindow = GetDlgItem(hwnd,2);
if (NULL != controlWindow)
SendMessageW(controlWindow, WM_SETFONT, (WPARAM)font, MAKELPARAM(0, 0L));
SmoothScrollList_UpdateFontMetrics(hwnd, redraw);
}
}
static LRESULT
SmoothScrollList_OnGetFont(HWND hwnd)
{
HWND listWindow;
listWindow = GetDlgItem(hwnd, 2);
if (NULL != listWindow)
return SendMessageW(listWindow, WM_GETFONT, 0, 0L);
return DefWindowProcW(hwnd, WM_GETFONT, 0, 0L);
}
static void
SmoothScrollList_OnSetRedraw(HWND hwnd, BOOL enableRedraw)
{
HWND childWindow;
DefWindowProcW(hwnd, WM_SETREDRAW, enableRedraw, 0L);
childWindow = GetDlgItem(hwnd, 3);
if (NULL != childWindow)
{
SendMessage(childWindow, WM_SETREDRAW, enableRedraw, 0L);
if (FALSE != enableRedraw)
InvalidateRect(childWindow, NULL, TRUE);
}
childWindow = GetDlgItem(hwnd, 2);
if (NULL != childWindow)
{
SendMessage(childWindow, WM_SETREDRAW, enableRedraw, 0L);
if (FALSE != enableRedraw)
InvalidateRect(childWindow, NULL, TRUE);
}
}
static void
SmoothScrollList_OnSkinUpdated(HWND hwnd, BOOL notifyChildren, BOOL redraw)
{
SmoothScrollList_UpdateFontMetrics(hwnd, redraw);
}
static LRESULT
SmoothScrollList_OnDisplaySort(HWND hwnd, int sortIndex, BOOL ascendingOrder)
{
HWND headerWindow;
headerWindow = GetDlgItem(hwnd, 3);
if (NULL == headerWindow)
return 0;
return SENDMLIPC(headerWindow, ML_IPC_SKINNEDHEADER_DISPLAYSORT, MAKEWPARAM(sortIndex, ascendingOrder));
}
static LRESULT
SmoothScrollList_OnGetSort(HWND hwnd)
{
HWND headerWindow;
headerWindow = GetDlgItem(hwnd, 3);
if (NULL == headerWindow)
return 0;
return SENDMLIPC(headerWindow, ML_IPC_SKINNEDHEADER_GETSORT, 0);
}
static void
SmoothScrollList_OnKeyDown(HWND hwnd, unsigned int vKey, unsigned int keyFlags)
{
HWND listWindow;
listWindow = GetDlgItem(hwnd, 2);
if (NULL != listWindow &&
WS_VISIBLE == ((WS_VISIBLE | WS_DISABLED) & GetWindowLongPtrW(listWindow, GWL_STYLE)))
{
SendMessageW(listWindow, WM_KEYDOWN, vKey, (LPARAM)keyFlags);
}
DefWindowProcW(hwnd, WM_KEYDOWN, vKey, (LPARAM)keyFlags);
}
static LRESULT
SmoothScrollList_OnMediaLibraryIPC(HWND hwnd, INT msg, INT_PTR param)
{
switch(msg)
{
case ML_IPC_SKINNEDWND_SKINUPDATED: SmoothScrollList_OnSkinUpdated(hwnd, LOWORD(param), HIWORD(param)); break;
case ML_IPC_SKINNEDLISTVIEW_DISPLAYSORT: return SmoothScrollList_OnDisplaySort(hwnd, LOWORD(param), HIWORD(param));
case ML_IPC_SKINNEDLISTVIEW_GETSORT: return SmoothScrollList_OnGetSort(hwnd);
}
return 0;
}
static LRESULT CALLBACK SmoothScrollMsgProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
switch(uMsg)
{
case WM_CREATE: return SmoothScrollList_OnCreate(hwnd, (CREATESTRUCT*)lParam);
case WM_DESTROY: SmoothScrollList_OnDestroy(hwnd); return 0;
case WM_WINDOWPOSCHANGED: SmoothScrollList_OnWindowPosChanged(hwnd, (WINDOWPOS*)lParam); return 0;
case WM_MOUSEWHEEL: SmoothScrollList_OnMouseWheel(hwnd, LOWORD(wParam), (short)HIWORD(wParam), (LONG)lParam); return 0;
case WM_VSCROLL: SmoothScrollList_OnVertScroll(hwnd, LOWORD(wParam), (short)HIWORD(wParam), (HWND)lParam); return 0;
case WM_ERASEBKGND: return 1;
case WM_MEASUREITEM: return SmoothScrollList_OnMeasureItem(hwnd, (MEASUREITEMSTRUCT*)lParam);
case WM_SETFONT: SmoothScrollList_OnSetFont(hwnd, (HFONT)wParam, LOWORD(lParam)); return 0;
case WM_GETFONT: return SmoothScrollList_OnGetFont(hwnd);
case WM_SETREDRAW: SmoothScrollList_OnSetRedraw(hwnd, (BOOL)wParam); return 0;
case LVM_GETHEADER:
return (LRESULT)GetDlgItem(hwnd,3);
case LVM_INSERTCOLUMNA:
case LVM_INSERTCOLUMNW:
{
LVCOLUMNW *listColumn = (LVCOLUMNW*)lParam;
HWND controlWindow;
LRESULT result;
result = -1;
controlWindow = GetDlgItem(hwnd,3);
if (NULL != controlWindow)
{
HDITEMW headerItem;
if (FALSE == CopyListColumnToHeaderItem(listColumn, &headerItem))
return -1;
if (0 == (HDI_FORMAT & headerItem.mask))
{
headerItem.mask |= HDI_FORMAT;
headerItem.fmt = HDF_LEFT;
}
result = SendMessageW(controlWindow,
(LVM_INSERTCOLUMNW == uMsg) ? HDM_INSERTITEMW : HDM_INSERTITEMA,
wParam, (LPARAM)&headerItem);
if (-1 == result)
return result;
}
controlWindow = GetDlgItem(hwnd, 2);
if (NULL != controlWindow)
result = SendMessageW(controlWindow, uMsg, wParam, lParam);
return result;
}
break;
case LVM_DELETECOLUMN:
{
HWND controlWindow;
controlWindow = GetDlgItem(hwnd,3);
if (NULL != controlWindow &&
FALSE ==SendMessageW(controlWindow, HDM_DELETEITEM, wParam, 0L))
{
return FALSE;
}
controlWindow = GetDlgItem(hwnd,2);
if (NULL != controlWindow)
return SendMessageW(controlWindow ,uMsg,wParam,lParam);
}
return FALSE;
case LVM_GETCOLUMNW:
case LVM_GETCOLUMNA:
{
LVCOLUMNW *l = (LVCOLUMNW *)lParam;
HDITEMW h;
HWND headerWindow;
headerWindow = GetDlgItem(hwnd, 3);
if (NULL == headerWindow)
return FALSE;
if (FALSE == CopyListColumnToHeaderItem(l, &h))
return FALSE;
if(!SendMessageW(headerWindow,
(LVM_GETCOLUMNW == uMsg) ? HDM_GETITEMW : HDM_GETITEMA,
wParam,
(LPARAM)&h))
{
return FALSE;
}
if (FALSE == CopyHeaderItemToListColumn(&h, l))
return FALSE;
}
return TRUE;
case LVM_GETCOLUMNWIDTH:
{
HWND controlWindow;
controlWindow = GetDlgItem(hwnd,3);
if (NULL != controlWindow)
{
HDITEMW h;
h.mask = HDI_WIDTH;
if (FALSE == SendMessageW(controlWindow, HDM_GETITEM, wParam, (LPARAM)&h))
return 0;
return h.cxy;
}
controlWindow = GetDlgItem(hwnd, 2);
if (NULL != controlWindow)
return SendMessageW(controlWindow, uMsg, wParam, lParam);
}
break;
case LVM_SETCOLUMNW:
case LVM_SETCOLUMNA:
{
LVCOLUMNW *l = (LVCOLUMNW *)lParam;
HWND controlWindow;
LRESULT result;
controlWindow = GetDlgItem(hwnd, 3);
if (NULL != controlWindow)
{
HDITEMW h;
if (FALSE == CopyListColumnToHeaderItem(l, &h))
return FALSE;
if(!SendMessageW(controlWindow,
(LVM_SETCOLUMNW == uMsg) ? HDM_SETITEMW : HDM_SETITEMA,
wParam, (LPARAM)&h))
{
return FALSE;
}
if (FALSE == CopyHeaderItemToListColumn(&h, l))
return FALSE;
result = TRUE;
}
else result = FALSE;
controlWindow = GetDlgItem(hwnd,2);
if (NULL != controlWindow)
result = SendMessageW(controlWindow, uMsg, wParam, lParam);
return result;
}
break;
case LVM_SETCOLUMNWIDTH:
{
HWND controlWindow;
LRESULT result;
controlWindow = GetDlgItem(hwnd, 3);
if (NULL != controlWindow)
{
HDITEMW headerItem;
if (LVSCW_AUTOSIZE == lParam)
return FALSE;
if (LVSCW_AUTOSIZE_USEHEADER == lParam)
return FALSE;
headerItem.mask = HDI_WIDTH;
headerItem.cxy = (int)lParam;
result = SendMessageW(controlWindow, HDM_SETITEMW, (WPARAM)wParam, (LPARAM)&headerItem);
if (FALSE == result)
return FALSE;
}
else
result = FALSE;
controlWindow = GetDlgItem(hwnd,2);
if (NULL != controlWindow)
result = SendMessageW(controlWindow, uMsg, wParam, lParam);
return result;
}
break;
case LVM_SETITEMCOUNT:
{
LRESULT result;
HWND controlWindow = GetDlgItem(hwnd,2);
result = (NULL != controlWindow) ?
SendMessageW(controlWindow, uMsg, wParam,lParam) :
0;
UpdateScrollInfo(hwnd, SIF_RANGE | SIF_POS, TRUE);
return result;
}
break;
case LVM_ENSUREVISIBLE:
return SmoothScrollList_EnsureVisible(hwnd, (int)wParam, (BOOL)lParam);
case WM_EX_UPDATESCROLLINFO:
return UpdateScrollInfo(hwnd, (UINT)wParam, (BOOL)lParam);
case WM_EX_UNLOCKREDRAW:
{
unsigned long windowStyle;
unsigned int redrawFlags;
HRGN regionInvalid;
RECT rect;
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 == (WS_VISIBLE & windowStyle))
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle | WS_VISIBLE);
redrawFlags = RDW_INVALIDATE | RDW_ALLCHILDREN;
if (0 != (IWF_FRAME & wParam))
{
redrawFlags |= RDW_FRAME;
GetWindowRect(hwnd, &rect);
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&rect, 2);
}
else
GetClientRect(hwnd, &rect);
if (0 != (IWF_ERASE & wParam))
redrawFlags |= RDW_ERASE;
if (0 != (IWF_UPDATENOW & wParam))
{
redrawFlags |= RDW_UPDATENOW;
if (0 != (IWF_ERASE & wParam))
redrawFlags |= RDW_ERASENOW;
}
regionInvalid = CreateRectRgnIndirect(&rect);
if (NULL != regionInvalid)
{
HWND headerWindow;
headerWindow = GetDlgItem(hwnd, 3);
if (NULL != headerWindow &&
0 != (WS_VISIBLE & GetWindowLongPtrW(headerWindow, GWL_STYLE)))
{
HRGN regionHeader;
GetWindowRect(headerWindow, &rect);
MapWindowPoints(HWND_DESKTOP, hwnd, (POINT*)&rect, 2);
regionHeader = CreateRectRgnIndirect(&rect);
if (NULL != regionHeader)
{
CombineRgn(regionInvalid, regionInvalid, regionHeader, RGN_DIFF);
DeleteObject(regionHeader);
}
}
}
RedrawWindow(hwnd, NULL, regionInvalid, redrawFlags);
if (NULL != regionInvalid)
DeleteObject(regionInvalid);
}
break;
case WM_NOTIFY:
{
LPNMHDR l=(LPNMHDR)lParam;
if(l->idFrom == 2)
{
l->idFrom = GetWindowLongPtrW(hwnd,GWLP_ID);
l->hwndFrom = hwnd; // this is prevents double reflecting
return SendMessageW(GetParent(hwnd),uMsg,l->idFrom,lParam);
}
else if(l->idFrom == 3)
{
switch(l->code)
{
case HDN_ITEMCLICKA:
case HDN_ITEMCLICKW:
{
NMHEADER *nm = (NMHEADER*)lParam;
HWND hwndParent;
hwndParent = GetParent(hwnd);
if (hwndParent)
{
wParam = GetWindowLongPtrW(hwnd,GWLP_ID);
if(nm->iButton == 0) { // left click
NMLISTVIEW p = {{hwnd, wParam, LVN_COLUMNCLICK},-1,nm->iItem,0};
return SendMessageW(hwndParent,WM_NOTIFY,wParam,(LPARAM)&p);
} else if(nm->iButton == 1) { // right click
NMHDR p = {nm->hdr.hwndFrom,wParam,NM_RCLICK};
return SendMessageW(hwndParent,WM_NOTIFY,wParam,(LPARAM)&p);
}
}
}
break;
case HDN_ITEMCHANGINGA:
case HDN_ITEMCHANGINGW:
case HDN_ITEMCHANGEDA:
case HDN_ITEMCHANGEDW:
{
LRESULT result;
NMHEADER *nm = (NMHEADER*)lParam;
result = SendMessageW(GetParent(hwnd),uMsg, wParam,lParam);
if (FALSE != result &&
(HDN_ITEMCHANGINGW == l->code || HDN_ITEMCHANGINGA == l->code))
{
return result;
}
if (NULL != nm->pitem &&
0 != (HDI_WIDTH & nm->pitem->mask))
{
HWND hwndList;
hwndList = GetDlgItem(hwnd,2);
if (hwndList)
{
unsigned long windowStyle;
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 != (WS_VISIBLE & windowStyle))
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle & ~WS_VISIBLE);
ListView_SetColumnWidth(hwndList, nm->iItem,nm->pitem->cxy);
if (0 != (WS_VISIBLE & windowStyle))
{
windowStyle = GetWindowLongPtrW(hwnd, GWL_STYLE);
if (0 == (WS_VISIBLE & windowStyle))
{
windowStyle |= WS_VISIBLE;
SetWindowLongPtrW(hwnd, GWL_STYLE, windowStyle);
}
InvalidateRect(hwndList, NULL, FALSE);
}
}
}
return result;
}
break;
}
return SendMessageW(GetParent(hwnd),uMsg, wParam,lParam);
}
}
break;
case WM_EX_GETREALLIST:
return (LRESULT)GetDlgItem(hwnd, 2);
case WM_EX_GETCOUNTPERPAGE:
return SendMessageW(GetDlgItem(hwnd, 2), LVM_GETCOUNTPERPAGE, 0, 0L) + 1;
case WM_KEYDOWN: SmoothScrollList_OnKeyDown(hwnd, (unsigned int)wParam, (unsigned int)lParam); return 0;
case WM_ML_IPC:
return SmoothScrollList_OnMediaLibraryIPC(hwnd, (INT)lParam, (INT_PTR)wParam);
default:
if(uMsg >= LVM_FIRST && uMsg < LVM_FIRST + 0x100)
{
HWND hwndList = GetDlgItem(hwnd,2);
if (hwndList) return ListViewSubclass(hwndList, uMsg, wParam, lParam);
}
break;
}
return DefWindowProcW(hwnd,uMsg,wParam,lParam);
}
void InitSmoothScrollList() {
WNDCLASSW wc = {0, };
if (GetClassInfoW(plugin.hDllInstance, L"SmoothScrollList", &wc)) return;
wc.style = CS_DBLCLKS;
wc.lpfnWndProc = SmoothScrollMsgProc;
wc.hInstance = plugin.hDllInstance;
wc.lpszClassName = L"SmoothScrollList";
RegisterClassW(&wc);
}
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