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windows-server-2003/shell/comctl32/v6/lvrept.c

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// report view stuff (details)
#include "ctlspriv.h"
#include "listview.h"
#include <limits.h>
#define LV_DETAILSPADDING 1
#define LV_ICONINDENT 2
void ListView_RGetRectsEx(LV* plv, int iItem, int iSubItem, LPRECT prcIcon, LPRECT prcLabel);
int ListView_RXHitTest(LV* plv, int x);
void ListView_RInitialize(LV* plv, BOOL fInval)
{
MEASUREITEMSTRUCT mi;
if (plv && (plv->ci.style & LVS_OWNERDRAWFIXED))
{
int iOld = plv->cyItem;
mi.CtlType = ODT_LISTVIEW;
mi.CtlID = GetDlgCtrlID(plv->ci.hwnd);
mi.itemHeight = plv->cyItem; // default
SendMessage(plv->ci.hwndParent, WM_MEASUREITEM, mi.CtlID, (LPARAM)(MEASUREITEMSTRUCT *)&mi);
plv->cyItem = max(mi.itemHeight, 1); // never let app set height=0 or we fault-o-rama!
if (fInval && (iOld != plv->cyItem))
{
RedrawWindow(plv->ci.hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE);
}
}
}
DWORD ListView_RApproximateViewRect(LV* plv, int iCount, int iWidth, int iHeight)
{
RECT rc;
ListView_RGetRects(plv, iCount, NULL, NULL, &rc, NULL);
rc.bottom += plv->ptlRptOrigin.y;
rc.right += plv->ptlRptOrigin.x;
return MAKELONG(rc.right, rc.bottom);
}
void CCDrawRect(HDC hdc, int x, int y, int dx, int dy)
{
RECT rc;
rc.left = x;
rc.top = y;
rc.right = x + dx;
rc.bottom = y + dy;
ExtTextOut(hdc,0,0,ETO_OPAQUE,&rc,NULL,0,NULL);
}
void ListView_RAfterRedraw(LV* plv, HDC hdc)
{
if (plv->exStyle & LVS_EX_GRIDLINES && !plv->fGroupView)
{
int i;
int x;
COLORREF clrBk;
clrBk = SetBkColor(hdc, g_clrBtnFace);
x = -plv->ptlRptOrigin.x;
for (i = 0 ; (i < plv->cCol) && (x < plv->sizeClient.cx); i++)
{
HD_ITEM hitem;
hitem.mask = HDI_WIDTH;
Header_GetItem(plv->hwndHdr,
SendMessage(plv->hwndHdr, HDM_ORDERTOINDEX, i, 0),
&hitem);
x += hitem.cxy;
if (x > 0)
{
CCDrawRect(hdc, x, 0, g_cxBorder, plv->sizeClient.cy);
}
}
for (x = plv->yTop - 1; (x < plv->sizeClient.cy); x += plv->cyItem)
{
CCDrawRect(hdc, 0, x, plv->sizeClient.cx, g_cxBorder);
}
SetBkColor(hdc, clrBk);
}
}
//
// Internal function to Get the CXLabel, taking into account if the listview
// has no item data and also if RECOMPUTE needs to happen.
//
SHORT ListView_RGetCXLabel(LV* plv, int i, LISTITEM* pitem,
HDC hdc, BOOL fUseItem)
{
SHORT cxLabel = SRECOMPUTE;
if (!ListView_IsOwnerData( plv ))
{
cxLabel = pitem->cxSingleLabel;
}
if (cxLabel == SRECOMPUTE)
{
LISTITEM item;
if (!pitem)
{
ASSERT(!fUseItem)
pitem = &item;
fUseItem = FALSE;
}
ListView_IRecomputeLabelSize(plv, pitem, i, hdc, fUseItem);
cxLabel = pitem->cxSingleLabel;
}
// add on the space around the label taken up by the select rect
cxLabel += 2*g_cxLabelMargin;
return(cxLabel);
}
#define SATURATEBYTE(percent, x) { if (x + (percent * 10 * (x)) / 1000 > 0xFF) { if (fAllowDesaturation) x -= (x) / 30; else x = 0xFF; } else x += (percent * 10 * (x)) / 1000; }
COLORREF GetSortColor(int iPercent, COLORREF clr)
{
BOOL fAllowDesaturation;
BYTE r, g, b;
if (clr == 0) // Black huh?
{
return RGB(128,128,128);
}
// Doing this is less expensive than Luminance adjustment
fAllowDesaturation = FALSE;
r = GetRValue(clr);
g = GetGValue(clr);
b = GetBValue(clr);
// If all colors are above positive saturation, allow a desaturation
if (r > 0xF0 && g > 0xF0 && b > 0xF0)
{
fAllowDesaturation = TRUE;
}
SATURATEBYTE(iPercent, r);
SATURATEBYTE(iPercent, g);
SATURATEBYTE(iPercent, b);
return RGB(r,g,b);
}
//
// Returns FALSE if no more items to draw.
//
BOOL ListView_RDrawItem(PLVDRAWITEM plvdi)
{
BOOL fDrawFocusRect = FALSE;
BOOL fSelected = FALSE;
RECT rcIcon;
RECT rcLabel;
RECT rcBounds;
RECT rcT;
LV* plv = plvdi->plv;
int iCol = 0;
LVITEM item;
HDITEM hitem;
TCHAR ach[CCHLABELMAX];
UINT fText = 0;
UINT uSubItemFlags;
int iIndex = 0;
int xOffset = 0;
int yOffset = 0;
ListView_RGetRects(plv, (int)plvdi->nmcd.nmcd.dwItemSpec, NULL, NULL, &rcBounds, NULL);
if (rcBounds.bottom <= plv->yTop)
return TRUE;
if (plvdi->prcClip)
{
if (rcBounds.top >= plvdi->prcClip->bottom)
return plv->fGroupView; // no more items need painting, unless we are in group view.
// In group view, we can have the items out of order.
// Probably this condition won't happen very often...
if (!IntersectRect(&rcT, &rcBounds, plvdi->prcClip))
return TRUE;
}
// REVIEW: this would be faster if we did the GetClientRect
// outside the loop.
//
if (rcBounds.top >= plv->sizeClient.cy)
return plv->fGroupView; // See above comment about groupview.
if (plvdi->lpptOrg)
{
xOffset = plvdi->lpptOrg->x - rcBounds.left;
yOffset = plvdi->lpptOrg->y - rcBounds.top;
OffsetRect(&rcBounds, xOffset, yOffset);
}
item.iItem = (int)plvdi->nmcd.nmcd.dwItemSpec;
item.stateMask = LVIS_ALL;
// for first ListView_OnGetItem call
item.state = 0;
if (plv->ci.style & LVS_OWNERDRAWFIXED)
{
goto SendOwnerDraw;
}
SetRectEmpty(&rcT);
for (; iCol < plv->cCol; iCol++)
{
DWORD dwCustom = 0;
UINT uImageFlags;
COLORREF crBkSave = plv->clrBk;
COLORREF clrTextBk;
iIndex = (int) SendMessage(plv->hwndHdr, HDM_ORDERTOINDEX, iCol, 0);
SendOwnerDraw:
if (iIndex == 0)
{
item.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_STATE | LVIF_INDENT;
}
else
{
// Next time through, we only want text for subitems...
item.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_STATE;
}
item.iImage = -1;
item.iSubItem = iIndex;
item.pszText = ach;
item.cchTextMax = ARRAYSIZE(ach);
ListView_OnGetItem(plv, &item);
uSubItemFlags = plvdi->flags;
if (iIndex == 0)
{
// if it's owner draw, send off a message and return.
// do this after we've collected state information above though
if (plv->ci.style & LVS_OWNERDRAWFIXED)
{
DRAWITEMSTRUCT di = {0};
di.CtlType = ODT_LISTVIEW;
di.CtlID = GetDlgCtrlID(plv->ci.hwnd);
di.itemID = (int)plvdi->nmcd.nmcd.dwItemSpec;
di.itemAction = ODA_DRAWENTIRE;
di.hwndItem = plv->ci.hwnd;
di.hDC = plvdi->nmcd.nmcd.hdc;
di.rcItem = rcBounds;
if (plvdi->pitem)
di.itemData = plvdi->pitem->lParam;
if (item.state & LVIS_FOCUSED)
{
di.itemState |= ODS_FOCUS;
}
if (item.state & LVIS_SELECTED)
{
di.itemState |= ODS_SELECTED;
}
SendMessage(plv->ci.hwndParent, WM_DRAWITEM, di.CtlID,
(LPARAM)(DRAWITEMSTRUCT *)&di);
return TRUE;
}
}
hitem.mask = HDI_WIDTH | HDI_FORMAT;
Header_GetItem(plv->hwndHdr, iIndex, &hitem);
// first get the rects...
ListView_RGetRectsEx(plv, (int)plvdi->nmcd.nmcd.dwItemSpec, iIndex, &rcIcon, &rcLabel);
OffsetRect(&rcIcon, xOffset, yOffset);
OffsetRect(&rcLabel, xOffset, yOffset);
if (plvdi->dwCustom & CDRF_NOTIFYSUBITEMDRAW)
{
RECT rcTemp;
UINT uItemStateOld = plvdi->nmcd.nmcd.uItemState, uItemStateNew;
SendMessage(plv->hwndHdr, HDM_GETITEMRECT, iIndex, (LPARAM)&rcTemp);
plvdi->nmcd.nmcd.rc.left = rcTemp.left;
plvdi->nmcd.nmcd.rc.right = rcTemp.right;
plvdi->nmcd.iSubItem = iIndex;
dwCustom = CICustomDrawNotify(&plvdi->plv->ci, CDDS_SUBITEM | CDDS_ITEMPREPAINT, &plvdi->nmcd.nmcd);
uItemStateNew = plvdi->nmcd.nmcd.uItemState;
plvdi->nmcd.nmcd.uItemState = uItemStateOld;
if (dwCustom & CDRF_SKIPDEFAULT)
continue;
uSubItemFlags &= ~(LVDI_FOCUS | LVDI_SELECTED | LVDI_SELECTNOFOCUS | LVDI_HOTSELECTED);
if (uItemStateNew & CDIS_FOCUS)
uSubItemFlags |= LVDI_FOCUS;
if (uItemStateNew & CDIS_SELECTED)
{
if (plvdi->plv->flags & LVF_FOCUSED)
uSubItemFlags |= LVDI_SELECTED;
else
uSubItemFlags |= LVDI_SELECTNOFOCUS;
if (plvdi->plv->iHot == (int)plvdi->nmcd.nmcd.dwItemSpec &&
((plv->exStyle & LVS_EX_ONECLICKACTIVATE) ||
(plv->exStyle & LVS_EX_TWOCLICKACTIVATE)))
{
uSubItemFlags |= LVDI_HOTSELECTED;
}
}
}
if (iIndex != 0)
{
// for right now, add this in because the get rects for
// non 0 doesn't account for the icon (yet)
if (item.iImage != -1)
rcLabel.left += plv->cxSmIcon + LV_ICONINDENT;
}
uImageFlags = uSubItemFlags;
fText = ListView_GetTextSelectionFlags(plv, &item, uSubItemFlags);
fSelected = fText & (SHDT_SELECTED | SHDT_SELECTNOFOCUS);
clrTextBk = plvdi->nmcd.clrTextBk;
if (plv->pImgCtx || ListView_IsWatermarked(plv))
{
clrTextBk = CLR_NONE;
}
if (iIndex == plv->iLastColSort &&
!(plv->pImgCtx && plv->fImgCtxComplete) &&
!plv->fGroupView)
{
plv->clrBk = GetSortColor(10, plv->clrBk);
clrTextBk = plv->clrBk;
}
if (item.iImage == -1)
{
if (iIndex != 0)
{
// just use ListView_DrawImage to get the fText
uImageFlags |= LVDI_NOIMAGE;
}
}
else if (ListView_FullRowSelect(plv) &&
(fSelected || !(plv->pImgCtx && plv->fImgCtxComplete))) // Don't do this unless we are selected or we don't have an image
{
int iLeft = rcIcon.left;
int iRight = rcIcon.right;
if (iIndex == 0)
{
rcIcon.left -= plv->cxState + LV_ICONTOSTATEOFFSET(plv) + g_cxEdge;
}
rcIcon.right = rcLabel.right;
FillRectClr(plvdi->nmcd.nmcd.hdc, &rcIcon, plv->clrBk);
rcIcon.left = iLeft;
rcIcon.right = iRight;
}
ListView_DrawImageEx(plv, &item, plvdi->nmcd.nmcd.hdc,
rcIcon.left, rcIcon.top, plv->clrBk, uSubItemFlags, rcLabel.right);
if (ListView_FullRowSelect(plv) && (uSubItemFlags & LVDI_FOCUS))
{
// if we're doing a full row selection, collect the union
// of the labels for the focus rect
UnionRect(&rcT, &rcT, &rcLabel);
}
if (item.pszText)
{
int xLabelRight = rcLabel.right;
UINT textflags;
// give all but the first columns extra margins so
// left and right justified things don't stick together
textflags = (iIndex == 0) ? SHDT_ELLIPSES : SHDT_ELLIPSES | SHDT_EXTRAMARGIN;
// rectangle limited to the size of the string
textflags |= fText;
if ((!ListView_FullRowSelect(plv)) &&
((fText & (SHDT_SELECTED | SHDT_SELECTNOFOCUS)) || (item.state & LVIS_FOCUSED)))
{
int cxLabel;
// if selected or focused, the rectangle is more
// meaningful and should correspond to the string
//
if (iIndex == 0)
{
LISTITEM litem;
LISTITEM *pitem = plvdi->pitem;
if (!pitem)
{
pitem = &litem;
litem.pszText = item.pszText;
}
cxLabel = ListView_RGetCXLabel(plv, (int)plvdi->nmcd.nmcd.dwItemSpec, pitem, plvdi->nmcd.nmcd.hdc, TRUE);
}
else
{
// add g_cxLabelMargin * 6 because we use SHDT_EXTRAMARGIN
// on iIndex != 0
// and if you look inside shdrawtext, there are 6 cxlabelmargins added...
cxLabel = ListView_OnGetStringWidth(plv, item.pszText, plvdi->nmcd.nmcd.hdc) + g_cxLabelMargin * 6;
}
if (rcLabel.right > rcLabel.left + cxLabel)
{
rcLabel.right = rcLabel.left + cxLabel;
}
}
if ((iIndex != 0) || (plv->iEdit != (int)plvdi->nmcd.nmcd.dwItemSpec))
{
COLORREF clrText;
HFONT hFontTemp = NULL;
int cxEllipses;
HRESULT hr = E_FAIL;
clrText = plvdi->nmcd.clrText;
if ((clrText == GetSysColor(COLOR_HOTLIGHT)) ||
((plv->exStyle & LVS_EX_UNDERLINEHOT) &&
((plv->exStyle & LVS_EX_ONECLICKACTIVATE) ||
((plvdi->plv->exStyle & LVS_EX_TWOCLICKACTIVATE) &&
ListView_OnGetItemState(plvdi->plv, (int) plvdi->nmcd.nmcd.dwItemSpec, LVIS_SELECTED)))))
{
if (iIndex != 0 && !ListView_FullRowSelect(plv))
{
hFontTemp = SelectFont(plvdi->nmcd.nmcd.hdc, plv->hfontLabel);
if (hFontTemp != plv->hFontHot)
{
// they've overridden... leave it.
SelectFont(plvdi->nmcd.nmcd.hdc, hFontTemp);
hFontTemp = NULL;
}
clrText = plv->clrText;
}
}
if ((textflags & SHDT_SELECTED) && (uSubItemFlags & LVDI_HOTSELECTED))
textflags |= SHDT_HOTSELECTED;
if( plv->dwExStyle & WS_EX_RTLREADING)
{
//
// temp hack for the find.files to see if LtoR/RtoL mixing
// works. if ok, we'll take this out and make that lv ownerdraw
//
if ((item.pszText[0] != '\xfd') && (item.pszText[lstrlen(item.pszText)-1] != '\xfd'))
textflags |= SHDT_RTLREADING;
}
//
// If the app customized the font, we need to get the new
// ellipsis size. We could try to optimize not doing this
// if ellipses aren't needed, but tough. That's what you
// get if you use customdraw.
//
if ((plvdi->dwCustom | dwCustom) & CDRF_NEWFONT)
{
SIZE siz;
GetTextExtentPoint(plvdi->nmcd.nmcd.hdc, c_szEllipses, CCHELLIPSES, &siz);
cxEllipses = siz.cx;
}
else
cxEllipses = plv->cxEllipses;
SHDrawText(plvdi->nmcd.nmcd.hdc, item.pszText, &rcLabel,
hitem.fmt & HDF_JUSTIFYMASK, textflags,
plv->cyLabelChar, cxEllipses,
clrText, clrTextBk);
// draw a focus rect on the first column of a focus item
if ((uSubItemFlags & LVDI_FOCUS) &&
(item.state & LVIS_FOCUSED) &&
!(CCGetUIState(&(plvdi->plv->ci)) & UISF_HIDEFOCUS))
{
if (ListView_FullRowSelect(plv))
{
fDrawFocusRect = TRUE;
// if we're doing a full row selection, collect the union
// of the labels for the focus rect
UnionRect(&rcT, &rcT, &rcLabel);
}
else
{
DrawFocusRect(plvdi->nmcd.nmcd.hdc, &rcLabel);
}
}
// restore the font
if (hFontTemp)
SelectFont(plvdi->nmcd.nmcd.hdc, hFontTemp);
}
}
if (dwCustom & CDRF_NOTIFYPOSTPAINT)
{
CICustomDrawNotify(&plvdi->plv->ci, CDDS_SUBITEM | CDDS_ITEMPOSTPAINT, &plvdi->nmcd.nmcd);
}
plv->clrBk = crBkSave;
}
if (fDrawFocusRect)
{
DrawFocusRect(plvdi->nmcd.nmcd.hdc, &rcT);
}
return TRUE;
}
BOOL_PTR ListView_CreateHeader(LV* plv)
{
// enable drag drop always here... just fail the notify
// if the bit in listview isn't set
DWORD dwStyle = HDS_HORZ | WS_CHILD | HDS_DRAGDROP;
if (plv->ci.style & LVS_NOCOLUMNHEADER)
dwStyle |= HDS_HIDDEN;
if (!(plv->ci.style & LVS_NOSORTHEADER))
dwStyle |= HDS_BUTTONS;
dwStyle |= HDS_FULLDRAG;
plv->hwndHdr = CreateWindowEx(0L, c_szHeaderClass, // WC_HEADER,
NULL, dwStyle, 0, 0, 0, 0, plv->ci.hwnd, (HMENU)LVID_HEADER, GetWindowInstance(plv->ci.hwnd), NULL);
if (plv->hwndHdr)
{
FORWARD_WM_SETFONT(plv->hwndHdr, plv->hfontLabel, FALSE, SendMessage);
if (plv->himlSmall)
SendMessage(plv->hwndHdr, HDM_SETIMAGELIST, 0, (LPARAM)plv->himlSmall);
}
return (BOOL_PTR)plv->hwndHdr;
}
int ListView_OnInsertColumnA(LV* plv, int iCol, LV_COLUMNA * pcol)
{
LPWSTR pszW = NULL;
LPSTR pszC = NULL;
int iRet;
//HACK ALERT -- this code assumes that LV_COLUMNA is exactly the same
// as LV_COLUMNW except for the pointer to the string.
ASSERT(sizeof(LV_COLUMNA) == sizeof(LV_COLUMNW));
if (!pcol)
return -1;
if ((pcol->mask & LVCF_TEXT) && (pcol->pszText != NULL))
{
pszC = pcol->pszText;
if ((pszW = ProduceWFromA(plv->ci.uiCodePage, pszC)) == NULL)
{
// NT's IE4 returned -1, so we keep doing it in IE5.
return -1;
}
else
{
pcol->pszText = (LPSTR)pszW;
}
}
iRet = ListView_OnInsertColumn(plv, iCol, (const LV_COLUMN*) pcol);
if (pszW != NULL)
{
pcol->pszText = pszC;
FreeProducedString(pszW);
}
return iRet;
}
int ListView_OnInsertColumn(LV* plv, int iCol, const LV_COLUMN* pcol)
{
int idpa = -1;
HD_ITEM item;
ASSERT(LVCFMT_LEFT == HDF_LEFT);
ASSERT(LVCFMT_RIGHT == HDF_RIGHT);
ASSERT(LVCFMT_CENTER == HDF_CENTER);
if (iCol < 0 || !pcol)
return -1;
if (!plv->hwndHdr && !ListView_CreateHeader(plv))
return -1;
item.mask = (HDI_WIDTH | HDI_HEIGHT | HDI_FORMAT | HDI_LPARAM);
if (pcol->mask & LVCF_IMAGE) {
// do this only if this bit is set so that we don't fault on
// old binaries
item.iImage = pcol->iImage;
item.mask |= HDI_IMAGE;
}
if (pcol->mask & LVCF_TEXT) {
item.pszText = pcol->pszText;
item.mask |= HDI_TEXT;
}
if (pcol->mask & LVCF_ORDER) {
item.iOrder = pcol->iOrder;
item.mask |= HDI_ORDER;
}
item.cxy = pcol->mask & LVCF_WIDTH ? pcol->cx : 10; // some random default
item.fmt = ((pcol->mask & LVCF_FMT) && (iCol > 0)) ? pcol->fmt : LVCFMT_LEFT;
item.hbm = NULL;
item.lParam = pcol->mask & LVCF_SUBITEM ? pcol->iSubItem : 0;
// Column 0 refers to the item list. If we've already added a
// column, make sure there are plv->cCol - 1 subitem ptr slots
// in hdpaSubItems...
//
if (plv->cCol > 0)
{
if (!plv->hdpaSubItems)
{
plv->hdpaSubItems = DPA_CreateEx(8, plv->hheap);
if (!plv->hdpaSubItems)
return -1;
}
// WARNING: the max(0, iCol-1) was min in Win95, which was
// just wrong. hopefully(!) no one has relied on this brokeness
// if so, we may have to version switch it.
idpa = DPA_InsertPtr(plv->hdpaSubItems, max(0, iCol - 1), NULL);
if (idpa == -1)
return -1;
}
iCol = Header_InsertItem(plv->hwndHdr, iCol, &item);
if (iCol == -1)
{
if (plv->hdpaSubItems && (idpa != -1))
DPA_DeletePtr(plv->hdpaSubItems, idpa);
return -1;
}
plv->xTotalColumnWidth = RECOMPUTE;
plv->cCol++;
ListView_UpdateScrollBars(plv);
if (ListView_IsReportView(plv) && ListView_RedrawEnabled(plv)) {
RedrawWindow(plv->ci.hwnd, NULL, NULL, RDW_ERASE | RDW_INVALIDATE);
}
return iCol;
}
int ListView_FreeColumnData(LPVOID d, LPVOID p)
{
PLISTSUBITEM plsi = (PLISTSUBITEM)d;
ListView_FreeSubItem(plsi);
return 1;
}
BOOL ListView_OnDeleteColumn(LV* plv, int iCol)
{
if (iCol < 0 || iCol >= plv->cCol) // validate column index
{
RIPMSG(0, "LVM_DELETECOLUMN: Invalid column index: %d", iCol);
return FALSE;
}
if (plv->hdpaSubItems)
{
int iDeleteColumn = iCol; // This is the column we want to delete
if (iCol == 0 && // Trying to delete column Zero?
plv->cCol >= 2 && // Do we have two or more columns?
!ListView_IsOwnerData(plv))
{
// if deleting column 0,
// we have to do something a little special...
// set all item 0 strings to what column 1 has and
// delete column 1
int i;
int iCount = ListView_Count(plv);
for (i = 0; i < iCount; i++)
{
LISTSUBITEM lsi;
LVITEM lvi;
ListView_GetSubItem(plv, i, 1, &lsi);
lvi.iSubItem = 0;
lvi.iItem = i;
lvi.mask = LVIF_TEXT | LVIF_IMAGE;
lvi.iImage = lsi.iImage;
lvi.pszText = lsi.pszText;
lvi.state = lsi.state;
lvi.stateMask = 0xffffffff;
ListView_OnSetItem(plv, &lvi);
}
iDeleteColumn = 1;
}
if (iDeleteColumn > 0)
{
HDPA hdpa = (HDPA)DPA_DeletePtr(plv->hdpaSubItems, iDeleteColumn - 1);
DPA_DestroyCallback(hdpa, ListView_FreeColumnData, 0);
}
}
if (!Header_DeleteItem(plv->hwndHdr, iCol))
return FALSE;
plv->cCol--;
plv->xTotalColumnWidth = RECOMPUTE;
ListView_UpdateScrollBars(plv);
if (ListView_IsReportView(plv) && ListView_RedrawEnabled(plv))
{
RedrawWindow(plv->ci.hwnd, NULL, NULL, RDW_ERASE | RDW_INVALIDATE);
}
return TRUE;
}
int ListView_RGetColumnWidth(LV* plv, int iCol)
{
HD_ITEM item = {0};
item.mask = HDI_WIDTH;
Header_GetItem(plv->hwndHdr, iCol, &item);
return item.cxy;
}
// The FakeCustomDraw functions are used when you want the customdraw client
// to set up a HDC so you can do stuff like GetTextExtent.
//
// Usage:
//
// LVFAKEDRAW lvfd;
// LV_ITEM item;
// ListView_BeginFakeCustomDraw(plv, &lvfd, &item);
// for each item you care about {
// item.iItem = iItem;
// item.iItem = iSubItem;
// item.lParam = <item lParam>; // use ListView_OnGetItem to get it
// ListView_BeginFakeItemDraw(&lvfd);
// <party on the HDC in lvfd.nmcd.nmcd.hdc>
// ListView_EndFakeItemDraw(&lvfd);
// }
// ListView_EndFakeCustomDraw(&lvfd);
//
void ListView_BeginFakeCustomDraw(LV* plv, PLVFAKEDRAW plvfd, LV_ITEM *pitem)
{
plvfd->nmcd.nmcd.hdc = GetDC(plv->ci.hwnd);
plvfd->nmcd.nmcd.uItemState = 0;
plvfd->nmcd.nmcd.dwItemSpec = 0;
plvfd->nmcd.nmcd.lItemlParam = 0;
plvfd->hfontPrev = SelectFont(plvfd->nmcd.nmcd.hdc, plv->hfontLabel);
plvfd->nmcd.dwItemType = 0;
//
// Since we aren't actually painting anything, we pass an empty
// paint rectangle. Gosh, I hope no app faults when it sees an
// empty paint rectangle.
//
SetRectEmpty(&plvfd->nmcd.nmcd.rc);
plvfd->plv = plv;
plvfd->dwCustomPrev = plv->ci.dwCustom;
plvfd->pitem = pitem;
plv->ci.dwCustom = CIFakeCustomDrawNotify(&plv->ci, CDDS_PREPAINT, &plvfd->nmcd.nmcd);
}
DWORD ListView_BeginFakeItemDraw(PLVFAKEDRAW plvfd)
{
LV *plv = plvfd->plv;
LV_ITEM *pitem;
// Early-out: If client doesn't use CustomDraw, then stop immediately.
if (!(plv->ci.dwCustom & CDRF_NOTIFYITEMDRAW))
return CDRF_DODEFAULT;
pitem = plvfd->pitem;
// Note that if the client says CDRF_SKIPDEFAULT (i.e., is owner-draw)
// we measure the item anyway, because that's what IE4 did.
// Make sure we do have the lParam. Office will fault if you give
// bogus lParams during customdraw callbacks.
plvfd->nmcd.nmcd.dwItemSpec = pitem->iItem;
if (ListView_IsOwnerData(plv))
{
// OwnerData always gets lItemlParam = 0
ASSERT(plvfd->nmcd.nmcd.lItemlParam == 0); // should still be 0
} else {
ASSERT(pitem->mask & LVIF_PARAM);
plvfd->nmcd.nmcd.lItemlParam = pitem->lParam;
}
if (!(plv->ci.dwCustom & CDRF_SKIPDEFAULT)) {
plvfd->nmcd.iSubItem = 0;
plvfd->dwCustomItem = CIFakeCustomDrawNotify(&plv->ci, CDDS_ITEMPREPAINT, &plvfd->nmcd.nmcd);
} else {
plvfd->dwCustomItem = CDRF_DODEFAULT;
}
//
// Only report view supports sub-items.
//
if (!ListView_IsReportView(plv))
plvfd->dwCustomItem &= ~CDRF_NOTIFYSUBITEMDRAW;
if (plvfd->dwCustomItem & CDRF_NOTIFYSUBITEMDRAW) {
plvfd->nmcd.iSubItem = pitem->iSubItem;
plvfd->dwCustomSubItem = CIFakeCustomDrawNotify(&plv->ci, CDDS_SUBITEM | CDDS_ITEMPREPAINT, &plvfd->nmcd.nmcd);
} else {
plvfd->dwCustomSubItem = CDRF_DODEFAULT;
}
return plvfd->dwCustomItem | plvfd->dwCustomSubItem;
}
void ListView_EndFakeItemDraw(PLVFAKEDRAW plvfd)
{
LV *plv = plvfd->plv;
// Early-out: If client doesn't use CustomDraw, then stop immediately.
if (!(plv->ci.dwCustom & CDRF_NOTIFYITEMDRAW))
return;
if (!(plvfd->dwCustomSubItem & CDRF_SKIPDEFAULT) &&
(plvfd->dwCustomSubItem & CDRF_NOTIFYPOSTPAINT)) {
ASSERT(plvfd->dwCustomItem & CDRF_NOTIFYSUBITEMDRAW);
ASSERT(plvfd->nmcd.iSubItem == plvfd->pitem->iSubItem);
CIFakeCustomDrawNotify(&plv->ci, CDDS_SUBITEM | CDDS_ITEMPOSTPAINT, &plvfd->nmcd.nmcd);
}
if ((plvfd->dwCustomItem | plvfd->dwCustomSubItem) & CDRF_NEWFONT) // App changed font, so
SelectFont(plvfd->nmcd.nmcd.hdc, plv->hfontLabel); // restore default font
if (!(plvfd->dwCustomItem & CDRF_SKIPDEFAULT) &&
(plvfd->dwCustomItem & CDRF_NOTIFYPOSTPAINT)) {
plvfd->nmcd.iSubItem = 0;
CIFakeCustomDrawNotify(&plv->ci, CDDS_ITEMPOSTPAINT, &plvfd->nmcd.nmcd);
}
}
void ListView_EndFakeCustomDraw(PLVFAKEDRAW plvfd)
{
LV *plv = plvfd->plv;
// notify parent afterwards if they want us to
if (!(plv->ci.dwCustom & CDRF_SKIPDEFAULT) &&
plv->ci.dwCustom & CDRF_NOTIFYPOSTPAINT) {
CIFakeCustomDrawNotify(&plv->ci, CDDS_POSTPAINT, &plvfd->nmcd.nmcd);
}
// Restore previous state
plv->ci.dwCustom = plvfd->dwCustomPrev;
SelectObject(plvfd->nmcd.nmcd.hdc, plvfd->hfontPrev);
ReleaseDC(plv->ci.hwnd, plvfd->nmcd.nmcd.hdc);
}
BOOL hasVertScroll
(
LV* plv
)
{
RECT rcClient;
RECT rcBounds;
int cColVis;
BOOL fHorSB;
// Get the horizontal bounds of the items.
ListView_GetClientRect(plv, &rcClient, FALSE, NULL);
ListView_RGetRects(plv, 0, NULL, NULL, &rcBounds, NULL);
fHorSB = (rcBounds.right - rcBounds.left > rcClient.right);
cColVis = (rcClient.bottom - plv->yTop -
(fHorSB ? ListView_GetCyScrollbar(plv) : 0)) / plv->cyItem;
// check to see if we need a vert scrollbar
if ((int)cColVis < ListView_Count(plv))
return(TRUE);
else
return(FALSE);
}
BOOL ListView_RSetColumnWidth(LV* plv, int iCol, int cx)
{
HD_ITEM item;
HD_ITEM colitem;
SIZE siz;
LV_ITEM lviItem;
int i;
int ItemWidth = 0;
int HeaderWidth = 0;
TCHAR szLabel[CCHLABELMAX + 4]; // CCHLABLEMAX == MAX_PATH
int iBegin;
int iEnd;
// Should we compute the width based on the widest string?
// If we do, include the Width of the Label, and if this is the
// Last column, set the width so the right side is at the list view's right edge
if (cx <= LVSCW_AUTOSIZE)
{
LVFAKEDRAW lvfd; // in case client uses customdraw
if (cx == LVSCW_AUTOSIZE_USEHEADER)
{
// Special Cases:
// 1) There is only 1 column. Set the width to the width of the listview
// 2) This is the rightmost column, set the width so the right edge of the
// column coinsides with to right edge of the list view.
if (plv->cCol == 1)
{
RECT rcClient;
ListView_GetClientRect(plv, &rcClient, FALSE, NULL);
HeaderWidth = rcClient.right - rcClient.left;
}
else if (iCol == (plv->cCol-1))
{
// REARCHITECT: This will only work if the listview as NOT
// been previously horizontally scrolled
RECT rcClient;
RECT rcHeader;
ListView_GetClientRect(plv, &rcClient, FALSE, NULL);
if (!Header_GetItemRect(plv->hwndHdr, plv->cCol - 2, &rcHeader))
rcHeader.right = 0;
// Is if visible
if (rcHeader.right < (rcClient.right-rcClient.left))
{
HeaderWidth = (rcClient.right-rcClient.left) - rcHeader.right;
}
}
// If we have a header width, then is is one of these special ones, so
// we need to account for a vert scroll bar since we are using Client values
if (HeaderWidth && hasVertScroll(plv))
{
HeaderWidth -= g_cxVScroll;
}
// Get the Width of the label.
// We assume that the app hasn't changed any attributes
// of the header control - still has default font, margins, etc.
colitem.mask = HDI_TEXT | HDI_FORMAT;
colitem.pszText = szLabel;
colitem.cchTextMax = ARRAYSIZE(szLabel);
if (Header_GetItem(plv->hwndHdr, iCol, &colitem))
{
HTHEME hThemeHeader;
HDC hdc = GetDC(plv->ci.hwnd);
HFONT hfPrev = SelectFont(hdc, plv->hfontLabel);
GetTextExtentPoint(hdc, colitem.pszText,
lstrlen(colitem.pszText), &siz);
siz.cx += 2 * (3 * g_cxLabelMargin); // phd->iTextMargin
if (colitem.fmt & HDF_IMAGE)
{
siz.cx += plv->cxSmIcon;
siz.cx += 2 * (3 * g_cxLabelMargin); // pdh->iBmMargin
}
hThemeHeader = OpenThemeData(plv->hwndHdr, L"Header");
if (hThemeHeader)
{
RECT rc = {0, 0, siz.cx, siz.cy};
GetThemeBackgroundExtent(hThemeHeader, hdc, HP_HEADERITEM, 0, &rc, &rc);
siz.cx = RECTWIDTH(rc);
siz.cy = RECTHEIGHT(rc);
CloseThemeData(hThemeHeader);
}
HeaderWidth = max(HeaderWidth, siz.cx);
SelectFont(hdc, hfPrev);
ReleaseDC(plv->ci.hwnd, hdc);
}
}
iBegin = 0;
iEnd = ListView_Count( plv );
//
// Loop for each item in the view
//
if (ListView_IsOwnerData( plv ))
{
iBegin = (int)((plv->ptlRptOrigin.y - plv->yTop)
/ plv->cyItem);
iEnd = (int)((plv->ptlRptOrigin.y + plv->sizeClient.cy - plv->yTop)
/ plv->cyItem) + 1;
iBegin = max( 0, iBegin );
iEnd = max(iEnd, iBegin + 1);
iEnd = min( iEnd, ListView_Count( plv ) );
ListView_NotifyCacheHint( plv, iBegin, iEnd-1 );
}
//
// To obtain the widths of the strings, we have to pretend that
// we are painting them, in case the custom-draw client wants
// to play with fonts (e.g., Athena).
//
ListView_BeginFakeCustomDraw(plv, &lvfd, &lviItem);
//
// If column 0, then we also need to take indent into account.
//
lviItem.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_PARAM;
if (iCol == 0) {
lviItem.mask |= LVIF_INDENT;
}
// Loop for each item in the List
for (i = iBegin; i < iEnd; i++)
{
lviItem.iImage = -1;
lviItem.iItem = i;
lviItem.iSubItem = iCol;
lviItem.pszText = szLabel;
lviItem.cchTextMax = ARRAYSIZE(szLabel);
lviItem.iIndent = 0;
lviItem.stateMask = 0;
ListView_OnGetItem(plv, &lviItem);
// If there is a Text item, get its width
if (lviItem.pszText || (lviItem.iImage != -1))
{
if (lviItem.pszText)
{
ListView_BeginFakeItemDraw(&lvfd);
GetTextExtentPoint(lvfd.nmcd.nmcd.hdc, lviItem.pszText,
lstrlen(lviItem.pszText), &siz);
ListView_EndFakeItemDraw(&lvfd);
}
else
{
siz.cx = 0;
}
if (lviItem.iImage != -1)
{
siz.cx += plv->cxSmIcon + g_cxEdge + LV_ICONINDENT;
}
siz.cx += lviItem.iIndent * plv->cxSmIcon;
ItemWidth = max(ItemWidth, siz.cx);
}
}
ListView_EndFakeCustomDraw(&lvfd);
// Adjust by a reasonable border amount.
// If col 0, add 2*g_cxLabelMargin + g_szSmIcon.
// Otherwise add 6*g_cxLabelMargin.
// These amounts are based on Margins added automatically
// to the ListView in ShDrawText.
// REARCHITECT ListView Report format currently assumes and makes
// room for a Small Icon.
if (iCol == 0)
{
ItemWidth += plv->cxState + LV_ICONTOSTATEOFFSET(plv) + g_cxEdge;
ItemWidth += 2*g_cxLabelMargin;
}
else
{
ItemWidth += 6*g_cxLabelMargin;
}
TraceMsg(TF_LISTVIEW, "ListView: HeaderWidth:%d ItemWidth:%d", HeaderWidth, ItemWidth);
item.cxy = max(HeaderWidth, ItemWidth);
}
else
{
// Use supplied width
item.cxy = cx;
}
plv->xTotalColumnWidth = RECOMPUTE;
item.mask = HDI_WIDTH;
return Header_SetItem(plv->hwndHdr, iCol, &item);
}
BOOL ListView_OnGetColumnA(LV* plv, int iCol, LV_COLUMNA* pcol)
{
LPWSTR pszW = NULL;
LPSTR pszC = NULL;
BOOL fRet;
//HACK ALERT -- this code assumes that LV_COLUMNA is exactly the same
// as LV_COLUMNW except for the pointer to the string.
ASSERT(sizeof(LV_COLUMNA) == sizeof(LV_COLUMNW))
if (!pcol) return FALSE;
if ((pcol->mask & LVCF_TEXT) && (pcol->pszText != NULL))
{
pszC = pcol->pszText;
pszW = LocalAlloc(LMEM_FIXED, pcol->cchTextMax * sizeof(WCHAR));
if (pszW == NULL)
return FALSE;
pcol->pszText = (LPSTR)pszW;
}
fRet = ListView_OnGetColumn(plv, iCol, (LV_COLUMN*) pcol);
if (pszW != NULL)
{
if (fRet && pcol->cchTextMax)
ConvertWToAN(plv->ci.uiCodePage, pszC, pcol->cchTextMax, pszW, -1);
pcol->pszText = pszC;
LocalFree(pszW);
}
return fRet;
}
BOOL ListView_OnGetColumn(LV* plv, int iCol, LV_COLUMN* pcol)
{
HD_ITEM item;
UINT mask;
if (!pcol)
{
RIPMSG(0, "LVM_GETCOLUMN: Invalid pcol = NULL");
return FALSE;
}
mask = pcol->mask;
if (!mask)
return TRUE;
item.mask = HDI_FORMAT | HDI_WIDTH | HDI_LPARAM | HDI_ORDER | HDI_IMAGE;
if (mask & LVCF_TEXT)
{
if (pcol->pszText)
{
item.mask |= HDI_TEXT;
item.pszText = pcol->pszText;
item.cchTextMax = pcol->cchTextMax;
} else {
// For compatibility reasons, we don't fail the call if they
// pass NULL.
RIPMSG(0, "LVM_GETCOLUMN: Invalid pcol->pszText = NULL");
}
}
if (!Header_GetItem(plv->hwndHdr, iCol, &item))
{
RIPMSG(0, "LVM_GETCOLUMN: Invalid column number %d", iCol);
return FALSE;
}
if (mask & LVCF_SUBITEM)
pcol->iSubItem = (int)item.lParam;
if (mask & LVCF_ORDER)
pcol->iOrder = (int)item.iOrder;
if (mask & LVCF_IMAGE)
pcol->iImage = item.iImage;
if (mask & LVCF_FMT)
pcol->fmt = item.fmt;
if (mask & LVCF_WIDTH)
pcol->cx = item.cxy;
return TRUE;
}
BOOL ListView_OnSetColumnA(LV* plv, int iCol, LV_COLUMNA* pcol)
{
LPWSTR pszW = NULL;
LPSTR pszC = NULL;
BOOL fRet;
//HACK ALERT -- this code assumes that LV_COLUMNA is exactly the same
// as LV_COLUMNW except for the pointer to the string.
ASSERT(sizeof(LV_COLUMNA) == sizeof(LV_COLUMNW));
if (!pcol) return FALSE;
if ((pcol->mask & LVCF_TEXT) && (pcol->pszText != NULL))
{
pszC = pcol->pszText;
if ((pszW = ProduceWFromA(plv->ci.uiCodePage, pszC)) == NULL)
return FALSE;
pcol->pszText = (LPSTR)pszW;
}
fRet = ListView_OnSetColumn(plv, iCol, (const LV_COLUMN*) pcol);
if (pszW != NULL) {
pcol->pszText = pszC;
FreeProducedString(pszW);
}
return fRet;
}
BOOL ListView_OnSetColumn(LV* plv, int iCol, const LV_COLUMN* pcol)
{
HD_ITEM item;
UINT mask;
if (!pcol) return FALSE;
mask = pcol->mask;
if (!mask)
return TRUE;
item.mask = 0;
if (mask & LVCF_SUBITEM)
{
item.mask |= HDI_LPARAM;
item.lParam = iCol;
}
if (mask & LVCF_FMT)
{
item.mask |= HDI_FORMAT;
item.fmt = (pcol->fmt | HDF_STRING);
}
if (mask & LVCF_WIDTH)
{
item.mask |= HDI_WIDTH;
item.cxy = pcol->cx;
}
if (mask & LVCF_TEXT)
{
RIPMSG(pcol->pszText != NULL, "LVM_SETCOLUMN: LV_COLUMN.pszText should not be NULL");
item.mask |= HDI_TEXT;
item.pszText = pcol->pszText;
item.cchTextMax = 0;
}
if (mask & LVCF_IMAGE)
{
item.mask |= HDI_IMAGE;
item.iImage = pcol->iImage;
}
if (mask & LVCF_ORDER)
{
item.mask |= HDI_ORDER;
item.iOrder = pcol->iOrder;
}
plv->xTotalColumnWidth = RECOMPUTE;
return Header_SetItem(plv->hwndHdr, iCol, &item);
}
BOOL ListView_SetSubItem(LV* plv, const LV_ITEM* plvi)
{
LISTSUBITEM lsi;
BOOL fChanged = FALSE;
int i;
int idpa;
HDPA hdpa;
if (plvi->mask & ~(LVIF_DI_SETITEM | LVIF_TEXT | LVIF_IMAGE | LVIF_STATE))
{
RIPMSG(0, "ListView: Invalid mask: %04x", plvi->mask);
return FALSE;
}
if (!(plvi->mask & (LVIF_TEXT | LVIF_IMAGE | LVIF_STATE)))
return TRUE;
i = plvi->iItem;
if (!ListView_IsValidItemNumber(plv, i))
{
RIPMSG(0, "LVM_SETITEM: Invalid iItem: %d", plvi->iItem);
return FALSE;
}
// sub item indices are 1-based...
//
idpa = plvi->iSubItem - 1;
if (idpa < 0 || idpa >= plv->cCol - 1)
{
RIPMSG(0, "LVM_SETITEM: Invalid iSubItem: %d", plvi->iSubItem);
return FALSE;
}
hdpa = ListView_GetSubItemDPA(plv, idpa);
if (!hdpa)
{
hdpa = DPA_CreateEx(LV_HDPA_GROW, plv->hheap);
if (!hdpa)
return FALSE;
DPA_SetPtr(plv->hdpaSubItems, idpa, (void*)hdpa);
}
ListView_GetSubItem(plv, i, plvi->iSubItem, &lsi);
if (plvi->mask & LVIF_TEXT) {
if (lsi.pszText != plvi->pszText) {
Str_Set(&lsi.pszText, plvi->pszText);
fChanged = TRUE;
}
}
if (plvi->mask & LVIF_IMAGE) {
if (plvi->iImage != lsi.iImage) {
lsi.iImage = (short) plvi->iImage;
fChanged = TRUE;
}
}
if (plvi->mask & LVIF_STATE) {
DWORD dwChange;
dwChange = (lsi.state ^ plvi->state ) & plvi->stateMask;
if (dwChange) {
lsi.state ^= dwChange;
fChanged = TRUE;
}
}
if (fChanged) {
PLISTSUBITEM plsiReal = DPA_GetPtr(hdpa, i);
if (!plsiReal) {
plsiReal = LocalAlloc(LPTR, sizeof(LISTSUBITEM));
if (!plsiReal) {
// fail! bail out
return FALSE;
}
}
*plsiReal = lsi;
if (!DPA_SetPtr(hdpa, i, (void*)plsiReal)) {
ListView_FreeSubItem(plsiReal);
return FALSE;
}
}
// all's well... let's invalidate this
if (ListView_IsReportView(plv)) {
RECT rc;
ListView_RGetRectsEx(plv, plvi->iItem, plvi->iSubItem, NULL, &rc);
RedrawWindow(plv->ci.hwnd, &rc, NULL, RDW_ERASE | RDW_INVALIDATE);
}
else if (ListView_IsTileView(plv))
{
LISTITEM *pitem = ListView_GetItemPtr(plv, i);
if (pitem)
{
ListView_SetSRecompute(pitem);
// For tile view, we need to recompute the item
plv->rcView.left = RECOMPUTE;
if (plv->iItemDrawing != i)
ListView_InvalidateItemEx(plv, i, FALSE, RDW_ERASE | RDW_INVALIDATE, LVIF_TEXT);
}
}
return TRUE;
}
int ListView_RDestroyColumn(LPVOID d, LPVOID p)
{
HDPA hdpa = (HDPA)d;
DPA_DestroyCallback(hdpa, ListView_FreeColumnData, 0);
return 1;
}
void ListView_RDestroy(LV* plv)
{
DPA_DestroyCallback(plv->hdpaSubItems, ListView_RDestroyColumn, 0);
plv->hdpaSubItems = NULL;
}
VOID ListView_RHeaderTrack(LV* plv, HD_NOTIFY * pnm)
{
// We want to update to show where the column header will be.
HDC hdc;
RECT rcBounds;
// Statics needed from call to call
static int s_xLast = -32767;
hdc = GetDC(plv->ci.hwnd);
if (hdc == NULL)
return;
//
// First undraw the last marker we drew.
//
if (s_xLast > 0)
{
PatBlt(hdc, s_xLast, plv->yTop, g_cxBorder, plv->sizeClient.cy - plv->yTop, PATINVERT);
}
if (pnm->hdr.code == HDN_ENDTRACK)
{
s_xLast = -32767; // Some large negative number...
}
else
{
RECT rc;
//
// First we need to calculate the X location of the column
// To do this, we will need to know where this column begins
// Note: We need the bounding rects to help us know the origin.
ListView_GetRects(plv, 0, QUERY_DEFAULT, NULL, NULL, &rcBounds, NULL);
if (!Header_GetItemRect(plv->hwndHdr, pnm->iItem, &rc)) {
rc.left = 0;
}
rcBounds.left += rc.left;
// Draw the new line...
s_xLast = rcBounds.left + pnm->pitem->cxy;
PatBlt(hdc, s_xLast, plv->yTop, g_cxBorder, plv->sizeClient.cy - plv->yTop, PATINVERT);
}
ReleaseDC(plv->ci.hwnd, hdc);
}
// try to use scrollwindow to adjust the columns rather than erasing
// and redrawing.
void ListView_AdjustColumn(LV * plv, int iWidth)
{
int x;
RECT rcClip;
int dx = iWidth - plv->iSelOldWidth;
if (iWidth == plv->iSelOldWidth)
return;
// find the x coord of the left side of the iCol
// use rcClip as a temporary...
if (!Header_GetItemRect(plv->hwndHdr, plv->iSelCol, &rcClip)) {
x = 0;
} else {
x = rcClip.left;
}
x -= plv->ptlRptOrigin.x;
// compute the area to the right of the adjusted column
GetWindowRect(plv->hwndHdr, &rcClip);
rcClip.left = x;
rcClip.top = RECTHEIGHT(rcClip);
rcClip.right = plv->sizeClient.cx;
rcClip.bottom = plv->sizeClient.cy;
if (plv->fGroupView || ListView_IsWatermarkedBackground(plv) || ListView_IsWatermarked(plv))
{
plv->xTotalColumnWidth = RECOMPUTE;
ListView_UpdateScrollBars(plv);
RedrawWindow(plv->ci.hwnd, NULL, NULL,
RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW);
}
else if ((plv->pImgCtx == NULL) &&
(plv->clrBk != CLR_NONE) &&
(plv->clrTextBk != CLR_NONE))
{
//
// We have a solid color background,
// so we can smooth scroll the right side columns.
//
SMOOTHSCROLLINFO si = {0};
si.cbSize = sizeof(si),
si.hwnd = plv->ci.hwnd,
si.dx = dx,
si.lprcClip = &rcClip;
si.fuScroll = SW_ERASE | SW_INVALIDATE,
rcClip.left += min(plv->iSelOldWidth, iWidth);
SmoothScrollWindow(&si);
// if we shrunk, invalidate the right most edge because
// there might be junk there
if (iWidth < plv->iSelOldWidth)
{
rcClip.right = rcClip.left + g_cxEdge;
InvalidateRect(plv->ci.hwnd, &rcClip, TRUE);
}
plv->xTotalColumnWidth = RECOMPUTE;
// adjust clipping rect to only redraw the adjusted column
rcClip.left = x;
rcClip.right = max(rcClip.left, x+iWidth);
// Make the rectangle origin-based because ListView_UpdateScrollBars
// may scroll us around.
OffsetRect(&rcClip, plv->ptlRptOrigin.x, plv->ptlRptOrigin.y);
ListView_UpdateScrollBars(plv);
// Okay, now convert it back to client coordinates
OffsetRect(&rcClip, -plv->ptlRptOrigin.x, -plv->ptlRptOrigin.y);
// call update because scrollwindowex might have erased the right
// we don't want this invalidate to then enlarge the region
// and end up erasing everything.
UpdateWindow(plv->ci.hwnd);
RedrawWindow(plv->ci.hwnd, &rcClip, NULL,
RDW_INVALIDATE | RDW_UPDATENOW);
}
else
{
//
// We don't have a solid color background,
// erase and redraw the adjusted column and
// everything to the right (sigh).
//
plv->xTotalColumnWidth = RECOMPUTE;
ListView_UpdateScrollBars(plv);
rcClip.left = x;
RedrawWindow(plv->ci.hwnd, &rcClip, NULL,
RDW_INVALIDATE | RDW_UPDATENOW | RDW_ERASE);
}
}
BOOL ListView_ForwardHeaderNotify(LV* plv, HD_NOTIFY *pnm)
{
return BOOLFROMPTR(SendNotifyEx(plv->ci.hwndParent, pnm->hdr.hwndFrom, pnm->hdr.code,
(NMHDR *)pnm, plv->ci.bUnicode));
}
LRESULT ListView_HeaderNotify(LV* plv, HD_NOTIFY *pnm)
{
LRESULT lres = 0;
switch (pnm->hdr.code)
{
case HDN_BEGINDRAG:
if (!(plv->exStyle & LVS_EX_HEADERDRAGDROP))
return TRUE;
return ListView_ForwardHeaderNotify(plv, pnm);
case HDN_ENDDRAG:
if (pnm->pitem->iOrder != -1) {
InvalidateRect(plv->ci.hwnd, NULL, TRUE);
return ListView_ForwardHeaderNotify(plv, pnm);
}
goto DoDefault;
case HDN_ITEMCHANGING:
if (pnm->pitem->mask & HDI_WIDTH) {
HD_ITEM hitem;
hitem.mask = HDI_WIDTH;
Header_GetItem(plv->hwndHdr, pnm->iItem, &hitem);
plv->iSelCol = pnm->iItem;
plv->iSelOldWidth = hitem.cxy;
TraceMsg(TF_LISTVIEW, "HDN_ITEMCHANGING %d %d", hitem.cxy, pnm->pitem->cxy);
return ListView_ForwardHeaderNotify(plv, pnm);
}
else if (pnm->pitem->mask & HDI_FILTER) {
return ListView_ForwardHeaderNotify(plv, pnm);
}
goto DoDefault;
case HDN_ITEMCHANGED:
if (pnm->pitem->mask & HDI_WIDTH)
{
ListView_DismissEdit(plv, FALSE);
if (pnm->iItem == plv->iSelCol) {
// Must do this even if there are no items, since
// we have to redo the scrollbar, and the client
// may have custom-drawn gridlines or something.
ListView_AdjustColumn(plv, pnm->pitem->cxy);
} else {
// sanity check. we got confused, so redraw all
RedrawWindow(plv->ci.hwnd, NULL, NULL,
RDW_ERASE | RDW_INVALIDATE);
}
plv->iSelCol = -1;
lres = ListView_ForwardHeaderNotify(plv, pnm);
}
else if (pnm->pitem->mask & HDI_FILTER) {
lres = ListView_ForwardHeaderNotify(plv, pnm);
} else
goto DoDefault;
break;
case HDN_ITEMCLICK:
{
//
// Need to pass this and other HDN_ notifications back to
// parent. Should we simply pass up the HDN notifications
// or should we define equivlent LVN_ notifications...
//
// Pass column number in iSubItem, not iItem...
//
NMHEADER* pnmH = (NMHEADER*)pnm;
ListView_DismissEdit(plv, FALSE);
ListView_Notify(plv, -1, pnm->iItem, LVN_COLUMNCLICK);
lres = ListView_ForwardHeaderNotify(plv, pnm);
SetFocus(plv->ci.hwnd);
}
break;
case HDN_TRACK:
case HDN_ENDTRACK:
ListView_DismissEdit(plv, FALSE);
ListView_RHeaderTrack(plv, pnm);
lres = ListView_ForwardHeaderNotify(plv, pnm);
SetFocus(plv->ci.hwnd);
break;
case HDN_DIVIDERDBLCLICK:
ListView_DismissEdit(plv, FALSE);
ListView_RSetColumnWidth(plv, pnm->iItem, -1);
lres = ListView_ForwardHeaderNotify(plv, pnm);
SetFocus(plv->ci.hwnd);
break;
case HDN_FILTERCHANGE:
case HDN_FILTERBTNCLICK:
return ListView_ForwardHeaderNotify(plv, pnm);
case NM_RCLICK:
return (UINT)SendNotifyEx(plv->ci.hwndParent, plv->hwndHdr, NM_RCLICK, NULL, plv->ci.bUnicode);
default:
DoDefault:
return ListView_ForwardHeaderNotify(plv, pnm);
break;
}
// in v < 5 we always returned 0
// but for newer clients we'd like to have them deal with the notify
return lres;
}
int ListView_RYHitTest(LV* plv, int cy)
{
if (plv->fGroupView)
{
int iHit;
for (iHit = 0; iHit < ListView_Count(plv); iHit++)
{
RECT rc;
ListView_GetRects(plv, iHit, QUERY_DEFAULT, NULL, NULL, &rc, NULL);
if (cy >= rc.top && cy < rc.bottom)
return iHit;
}
}
else
return (cy + plv->ptlRptOrigin.y - plv->yTop) / plv->cyItem;
return -1;
}
/*----------------------------------------------------------------
** Check for a hit in a report view.
**
** a hit only counts if it's on the icon or the string in the first
** column. so we gotta figure out what this means exactly. yuck.
**
** BONUS FEATURE: If piSubItem is non-NULL, then we also hit-test
** against subitems. But if we find nothing, we return iSubItem = 0
** for compatibility with the other hit-test functions.
**----------------------------------------------------------------*/
int ListView_RItemHitTest(LV* plv, int x, int y, UINT* pflags, int *piSubItem)
{
int iHit;
int i, iSub;
UINT flags;
RECT rcLabel;
RECT rcIcon;
if (piSubItem)
*piSubItem = 0;
if (plv->rcView.left == RECOMPUTE && plv->fGroupView)
ListView_Recompute(plv);
flags = LVHT_NOWHERE;
iHit = -1;
i = ListView_RYHitTest(plv, y);
if (ListView_IsValidItemNumber(plv, i))
{
if (plv->ci.style & LVS_OWNERDRAWFIXED)
{
flags = LVHT_ONITEM;
iHit = i;
}
else
{
RECT rcSelect;
ListView_GetRects(plv, i, QUERY_DEFAULT, &rcIcon, &rcLabel, NULL, &rcSelect);
// is the hit in the first column?
if ((x < rcIcon.left - g_cxEdge) && x > (rcIcon.left - plv->cxState - LV_ICONTOSTATEOFFSET(plv)))
{
iHit = i;
flags = LVHT_ONITEMSTATEICON;
}
else if ((x >= rcIcon.left) && (x < rcIcon.right))
{
iHit = i;
flags = LVHT_ONITEMICON;
}
else if (x >= rcLabel.left && (x < rcSelect.right))
{
iHit = i;
flags = LVHT_ONITEMLABEL;
if (ListView_FullRowSelect(plv)) {
// this is kinda funky... in full row select mode
// we're only really on the label if x is <= rcLabel.left + cxLabel
// because GetRects returns a label rect of the full column width
// and rcSelect has the full row in FullRowSelect mode
// (it has the label only width in non-fullrow select mode.
//
// go figure..
//
int cxLabel;
LISTITEM* pitem = NULL;
if (!ListView_IsOwnerData( plv ))
{
pitem = ListView_FastGetItemPtr(plv, i);
}
cxLabel = ListView_RGetCXLabel(plv, i, pitem, NULL, FALSE);
if (x >= min(rcLabel.left + cxLabel, rcLabel.right)) {
if (!piSubItem)
flags = LVHT_ONITEM;
else
goto CheckSubItem;
}
}
} else if (x < rcSelect.right && ListView_FullRowSelect(plv)) {
// we can fall into this case if columns have been re-ordered
iHit = i;
flags = LVHT_ONITEM;
} else if (piSubItem) {
CheckSubItem:
iSub = ListView_RXHitTest(plv, x);
if (iSub >= 0) {
iHit = i;
*piSubItem = iSub;
// Flags still say LVHT_NOWHERE
}
}
}
}
*pflags = flags;
return iHit;
}
void ListView_GetSubItem(LV* plv, int i, int iSubItem, PLISTSUBITEM plsi)
{
HDPA hdpa;
PLISTSUBITEM plsiSrc = NULL;
ASSERT( !ListView_IsOwnerData( plv ));
// Sub items are indexed starting at 1...
//
RIPMSG(iSubItem > 0 && iSubItem < plv->cCol, "ListView: Invalid iSubItem: %d", iSubItem);
#ifdef DEBUG
// Avoid the assert in DPA_GetPtr if somebdy tries to get a subitem
// when no columns have been added. We already RIP'd above.
hdpa = plv->cCol ? ListView_GetSubItemDPA(plv, iSubItem - 1) : NULL;
#else
hdpa = ListView_GetSubItemDPA(plv, iSubItem - 1);
#endif
if (hdpa) {
plsiSrc = DPA_GetPtr(hdpa, i);
}
if (plsiSrc) {
*plsi = *plsiSrc;
} else {
// item data exists.. give defaults
plsi->pszText = LPSTR_TEXTCALLBACK;
plsi->iImage = I_IMAGECALLBACK;
plsi->state = 0;
}
}
// this will return the rect of a subitem as requested.
void ListView_RGetRectsEx(LV* plv, int iItem, int iSubItem, LPRECT prcIcon, LPRECT prcLabel)
{
int x;
int y;
LONG ly;
RECT rcLabel;
RECT rcIcon;
RECT rcHeader;
if (iSubItem == 0)
{
ListView_RGetRects(plv, iItem, prcIcon, prcLabel, NULL, NULL);
return;
}
ly = (LONG)iItem * plv->cyItem - plv->ptlRptOrigin.y + plv->yTop;
// otherwise it's just the header's column right and left and the item's height
if (plv->fGroupView && ListView_Count(plv) > 0)
{
LISTITEM* pitem = ListView_FastGetItemPtr(plv, iItem);
if (pitem && LISTITEM_HASGROUP(pitem))
{
ly = pitem->pt.y - plv->ptlRptOrigin.y + plv->yTop;
}
}
x = - (int)plv->ptlRptOrigin.x;
//
// Need to check for y overflow into rectangle structure
// if so we need to return something reasonable...
// For now will simply set it to the max or min that will fit...
//
if (ly >= (INT_MAX - plv->cyItem))
y = INT_MAX - plv->cyItem;
else if ( ly < INT_MIN)
y = INT_MIN;
else
y = (int)ly;
ASSERT(iSubItem < plv->cCol);
Header_GetItemRect(plv->hwndHdr, iSubItem, &rcHeader);
rcLabel.left = x + rcHeader.left;
rcLabel.right = x + rcHeader.right;
rcLabel.top = y;
rcLabel.bottom = rcLabel.top + plv->cyItem;
rcIcon = rcLabel;
rcIcon.right = rcIcon.left + plv->cxSmIcon;
if (SELECTOROF(prcIcon))
*prcIcon = rcIcon;
if (SELECTOROF(prcLabel))
*prcLabel = rcLabel;
}
int ListView_RGetTotalColumnWidth(LV* plv)
{
if (plv->xTotalColumnWidth == RECOMPUTE)
{
plv->xTotalColumnWidth = 0;
if (plv->cCol)
{
RECT rcLabel;
int iIndex;
// find the right edge of the last ordered item to get the total column width
iIndex = (int) SendMessage(plv->hwndHdr, HDM_ORDERTOINDEX, plv->cCol - 1, 0);
Header_GetItemRect(plv->hwndHdr, iIndex, &rcLabel);
plv->xTotalColumnWidth = rcLabel.right;
}
}
return plv->xTotalColumnWidth;
}
// get the rects for report view
void ListView_RGetRects(LV* plv, int iItem, RECT* prcIcon,
RECT* prcLabel, RECT* prcBounds, RECT* prcSelectBounds)
{
RECT rcIcon;
RECT rcLabel;
int x;
int y;
int cItems = ListView_Count(plv);
LONG ly = 0;
LVITEM lvitem;
BOOL fItemSpecific = (prcIcon || prcLabel || prcSelectBounds);
// If the item being asked for exceeds array bounds, use old calculation method
// This isn't a problem because listview typically is asking for bounds, or invalidation rects.
if (plv->fGroupView && iItem >= 0 && iItem < cItems)
{
LISTITEM* pitem = ListView_FastGetItemPtr(plv, iItem);
if (pitem && LISTITEM_HASGROUP(pitem))
{
ly = pitem->pt.y - plv->ptlRptOrigin.y + plv->yTop;
}
}
else
{
ly = (LONG)iItem * plv->cyItem - plv->ptlRptOrigin.y + plv->yTop;
}
x = - (int)plv->ptlRptOrigin.x;
//
// Need to check for y overflow into rectangle structure
// if so we need to return something reasonable...
// For now will simply set it to the max or min that will fit...
//
if (ly >= (INT_MAX - plv->cyItem))
y = INT_MAX - plv->cyItem;
else
y = (int)ly;
if (ListView_Count(plv) && fItemSpecific)
{
// move this over by the indent level as well
lvitem.mask = LVIF_INDENT;
lvitem.iItem = iItem;
lvitem.iSubItem = 0;
ListView_OnGetItem(plv, &lvitem);
}
else
{
lvitem.iIndent = 0;
}
rcIcon.left = x + plv->cxState + LV_ICONTOSTATEOFFSET(plv) + (lvitem.iIndent * plv->cxSmIcon) + g_cxEdge + LV_ICONINDENT;
rcIcon.right = rcIcon.left + plv->cxSmIcon;
rcIcon.top = y;
rcIcon.bottom = rcIcon.top + plv->cyItem;
rcLabel.left = rcIcon.right;
rcLabel.top = rcIcon.top;
rcLabel.bottom = rcIcon.bottom;
//
// The label is assumed to be the first column.
//
rcLabel.right = x;
if (plv->cCol > 0 && fItemSpecific)
{
RECT rc;
Header_GetItemRect(plv->hwndHdr, 0, &rc);
rcLabel.right = x + rc.right;
rcLabel.left += rc.left;
rcIcon.left += rc.left;
rcIcon.right += rc.left;
}
if (SELECTOROF(prcIcon))
*prcIcon = rcIcon;
// Save away the label bounds.
if (SELECTOROF(prcLabel))
{
*prcLabel = rcLabel;
}
// See if they also want the Selection bounds of the item
if (prcSelectBounds)
{
if (ListView_FullRowSelect(plv))
{
prcSelectBounds->left = x;
prcSelectBounds->top = y;
prcSelectBounds->bottom = rcLabel.bottom;
prcSelectBounds->right = prcSelectBounds->left + ListView_RGetTotalColumnWidth(plv);
}
else
{
int cxLabel;
LISTITEM* pitem = NULL;
if (!ListView_IsOwnerData( plv ))
{
pitem = ListView_FastGetItemPtr(plv, iItem);
}
cxLabel = ListView_RGetCXLabel(plv, iItem, pitem, NULL, FALSE);
*prcSelectBounds = rcIcon;
prcSelectBounds->right = rcLabel.left + cxLabel;
if (prcSelectBounds->right > rcLabel.right)
prcSelectBounds->right = rcLabel.right;
}
}
// And also the Total bounds
//
// and now for the complete bounds...
//
if (SELECTOROF(prcBounds))
{
prcBounds->left = x;
prcBounds->top = y;
prcBounds->bottom = rcLabel.bottom;
prcBounds->right = prcBounds->left + ListView_RGetTotalColumnWidth(plv);
}
}
BOOL ListView_OnGetSubItemRect(LV* plv, int iItem, LPRECT lprc)
{
LPRECT pRects[LVIR_MAX];
RECT rcTemp;
int iSubItem;
int iCode;
if (!lprc)
return FALSE;
iSubItem = lprc->top;
iCode = lprc->left;
if (iSubItem == 0)
{
return ListView_OnGetItemRect(plv, iItem, lprc);
}
if (!ListView_IsReportView(plv) ||
(iCode != LVIR_BOUNDS && iCode != LVIR_ICON && iCode != LVIR_LABEL))
{
return FALSE;
}
pRects[0] = NULL;
pRects[1] = &rcTemp; // LVIR_ICON
pRects[2] = &rcTemp; // LVIR_LABEL
pRects[3] = NULL;
if (iCode != LVIR_BOUNDS)
{
pRects[iCode] = lprc;
}
else
{
// choose either
pRects[LVIR_ICON] = lprc;
}
ListView_RGetRectsEx(plv, iItem, iSubItem,
pRects[LVIR_ICON], pRects[LVIR_LABEL]);
if (iCode == LVIR_BOUNDS)
{
UnionRect(lprc, lprc, &rcTemp);
}
return TRUE;
}
int ListView_RXHitTest(LV* plv, int x)
{
int iSubItem;
for (iSubItem = plv->cCol - 1; iSubItem >= 0; iSubItem--)
{
RECT rc;
// see if its in this rect,
if (!Header_GetItemRect(plv->hwndHdr, iSubItem, &rc))
return -1;
OffsetRect(&rc, -plv->ptlRptOrigin.x, 0);
if (rc.left <= x && x < rc.right)
{
break;
}
}
return iSubItem;
}
int ListView_OnSubItemHitTest(LV* plv, LPLVHITTESTINFO plvhti)
{
int i = -1;
int iSubItem = 0;
UINT uFlags = LVHT_NOWHERE;
if (!plvhti)
{
return -1;
}
if (ListView_IsReportView(plv))
{
iSubItem = ListView_RXHitTest(plv, plvhti->pt.x);
if (iSubItem == -1)
{
goto Bail;
}
}
if (iSubItem == 0)
{
// if we're in column 0, just hand it off to the old stuff
ListView_OnHitTest(plv, plvhti);
plvhti->iSubItem = 0;
return plvhti->iItem;
}
if (!ListView_IsReportView(plv))
{
goto Bail;
}
i = ListView_RYHitTest(plv, plvhti->pt.y);
if (i < ListView_Count(plv))
{
RECT rcIcon, rcLabel;
if (i != -1)
{
ListView_RGetRectsEx(plv, i, iSubItem, &rcIcon, &rcLabel);
if (plvhti->pt.x >= rcIcon.left && plvhti->pt.x <= rcIcon.right)
{
uFlags = LVHT_ONITEMICON;
}
else if (plvhti->pt.x >= rcLabel.left && plvhti->pt.x <= rcLabel.right)
{
uFlags = LVHT_ONITEMLABEL;
}
else
uFlags = LVHT_ONITEM;
}
}
else
{
i = -1;
}
Bail:
plvhti->iItem = i;
plvhti->iSubItem = iSubItem;
plvhti->flags = uFlags;
return plvhti->iItem;
}
// See whether entire string will fit in *prc; if not, compute number of chars
// that will fit, including ellipses. Returns length of string in *pcchDraw.
//
BOOL ListView_NeedsEllipses(HDC hdc, LPCTSTR pszText, RECT* prc, int* pcchDraw, int cxEllipses)
{
int cchText;
int cxRect;
int ichMin, ichMax, ichMid;
SIZE siz;
cxRect = prc->right - prc->left;
cchText = lstrlen(pszText);
if (cchText == 0)
{
*pcchDraw = cchText;
return FALSE;
}
GetTextExtentPoint(hdc, pszText, cchText, &siz);
if (siz.cx <= cxRect)
{
*pcchDraw = cchText;
return FALSE;
}
cxRect -= cxEllipses;
// If no room for ellipses, always show first character.
//
ichMax = 1;
if (cxRect > 0)
{
// Binary search to find character that will fit
ichMin = 0;
ichMax = cchText;
while (ichMin < ichMax)
{
// Be sure to round up, to make sure we make progress in
// the loop if ichMax == ichMin + 1.
//
ichMid = (ichMin + ichMax + 1) / 2;
GetTextExtentPoint(hdc, &pszText[ichMin], ichMid - ichMin, &siz);
if (siz.cx < cxRect)
{
ichMin = ichMid;
cxRect -= siz.cx;
}
else if (siz.cx > cxRect)
{
ichMax = ichMid - 1;
}
else
{
// Exact match up up to ichMid: just exit.
//
ichMax = ichMid;
break;
}
}
// Make sure we always show at least the first character...
//
if (ichMax < 1)
ichMax = 1;
}
*pcchDraw = ichMax;
return TRUE;
}
// in lvicon
DWORD ListView_GetClientRect(LV* plv, RECT* prcClient, BOOL fSubScroll, RECT *prcViewRect);
void ListView_RUpdateScrollBars(LV* plv)
{
HD_LAYOUT layout;
RECT rcClient;
RECT rcBounds;
WINDOWPOS wpos;
int cColVis, cyColVis, iNewPos, iyDelta = 0, ixDelta = 0;
BOOL fHorSB, fReupdate = FALSE;
SCROLLINFO si;
int iMin, iMax, iScreen, iPos;
ListView_GetClientRect(plv, &rcClient, FALSE, NULL);
if (!plv->hwndHdr)
ListView_CreateHeader(plv);
if (!plv->hwndHdr)
TraceMsg(TF_WARNING, "ListView_RUpdateScrollBars could not create hwndHdr");
layout.pwpos = &wpos;
// For now lets try to handle scrolling the header by setting
// its window pos.
rcClient.left -= (int)plv->ptlRptOrigin.x;
layout.prc = &rcClient;
Header_Layout(plv->hwndHdr, &layout);
rcClient.left += (int)plv->ptlRptOrigin.x; // Move it back over!
SetWindowPos(plv->hwndHdr, wpos.hwndInsertAfter, wpos.x, wpos.y,
wpos.cx, wpos.cy, wpos.flags | SWP_SHOWWINDOW);
// Get the horizontal bounds of the items.
ListView_RGetRects(plv, 0, NULL, NULL, &rcBounds, NULL);
plv->yTop = rcClient.top;
if (plv->fGroupView)
{
RECT rcView;
ListView_GetClientRect(plv, &rcClient, TRUE, &rcView);
iMin = 0;
iMax = RECTHEIGHT(rcView) - 1;
iScreen = RECTHEIGHT(rcClient);
iPos = rcClient.top - rcView.top;
}
else
{
// fHorSB = Do I need a horizontal scrollbar?
// cyColVis = number of pixels per screenful
fHorSB = (rcBounds.right - rcBounds.left > rcClient.right); // First guess.
cyColVis = rcClient.bottom - rcClient.top -
(fHorSB ? ListView_GetCyScrollbar(plv) : 0);
// If screen can't fit the entire listview...
if (cyColVis < ListView_Count(plv) * plv->cyItem)
{
//then we're going to have a vertical scrollbar.. make sure our horizontal count is correct
rcClient.right -= ListView_GetCxScrollbar(plv);
if (!fHorSB)
{
// if we previously thought we weren't going to have a scrollbar, we could be wrong..
// since the vertical bar shrunk our area
fHorSB = (rcBounds.right - rcBounds.left > rcClient.right); // First guess.
cyColVis = rcClient.bottom - rcClient.top -
(fHorSB ? ListView_GetCyScrollbar(plv) : 0);
}
}
// cColVis = number of completely visible items per screenful
cColVis = cyColVis / plv->cyItem;
iMin = 0;
iMax = ListView_Count(plv) - 1;
iScreen = cColVis;
iPos = (int)(plv->ptlRptOrigin.y / plv->cyItem);
}
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
si.nPos = iPos;
si.nPage = iScreen;
si.nMin = iMin;
si.nMax = iMax;
ListView_SetScrollInfo(plv, SB_VERT, &si, TRUE);
// make sure our position and page doesn't hang over max
if ((si.nPos > (int)si.nMax - (int)si.nPage + 1) && si.nPos > 0)
{
iNewPos = (int)si.nMax - (int)si.nPage + 1;
if (iNewPos < 0) iNewPos = 0;
if (iNewPos != si.nPos)
{
iyDelta = iNewPos - (int)si.nPos;
fReupdate = TRUE;
}
}
si.nPos = (int)plv->ptlRptOrigin.x;
si.nPage = rcClient.right - rcClient.left;
// We need to subtract 1 here because nMax is 0 based, and nPage is the actual
// number of page pixels. So, if nPage and nMax are the same we will get a
// horz scroll, since there is 1 more pixel than the page can show, but... rcBounds
// is like rcRect, and is the actual number of pixels for the whole thing, so
// we need to set nMax so that: nMax - 0 == rcBounds.right - rcBound.left
si.nMax = rcBounds.right - rcBounds.left - 1;
ListView_SetScrollInfo(plv, SB_HORZ, &si, TRUE);
// SWP_FRAMECHANGED redraws the background if the client
// area has changed (taking into account scrollbars and
// the Header window). SetScrollInfo does this automatically
// when it creates a scrollbar - we do it ourselves when
// there is no scrollbar.
if ((UINT)si.nPage > (UINT)si.nMax &&
((plv->pImgCtx && plv->fImgCtxComplete) || plv->hbmBkImage))
SetWindowPos(plv->ci.hwnd, NULL, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_FRAMECHANGED);
// make sure our position and page doesn't hang over max
if ((si.nPos + (LONG)si.nPage - 1 > si.nMax) && si.nPos > 0)
{
iNewPos = (int)si.nMax - (int)si.nPage + 1;
if (iNewPos < 0) iNewPos = 0;
if (iNewPos != si.nPos)
{
ixDelta = iNewPos - (int)si.nPos;
fReupdate = TRUE;
}
}
if (fReupdate)
{
// we shouldn't recurse because the second time through, si.nPos >0
ListView_RScroll2(plv, ixDelta, iyDelta, 0);
ListView_RUpdateScrollBars(plv);
TraceMsg(TF_LISTVIEW, "LISTVIEW: ERROR: We had to recurse!");
}
}
//
// We need a smoothscroll callback so our background image draws
// at the correct origin. If we don't have a background image,
// then this work is superfluous but not harmful either.
//
int CALLBACK ListView_RScroll2_SmoothScroll(
HWND hwnd,
int dx,
int dy,
CONST RECT *prcScroll,
CONST RECT *prcClip,
HRGN hrgnUpdate,
LPRECT prcUpdate,
UINT flags)
{
LV* plv = ListView_GetPtr(hwnd);
if (plv)
{
plv->ptlRptOrigin.x -= dx;
plv->ptlRptOrigin.y -= dy;
}
// Now do what SmoothScrollWindow would've done if we weren't
// a callback
if (ListView_IsWatermarkedBackground(plv) ||
ListView_IsWatermarked(plv))
{
InvalidateRect(plv->ci.hwnd, NULL, TRUE);
return TRUE;
}
else
return ScrollWindowEx(hwnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags);
}
void ListView_RScroll2(LV* plv, int dx, int dy, UINT uSmooth)
{
LONG ldy;
if (dx | dy)
{
RECT rc;
GetClientRect(plv->ci.hwnd, &rc);
rc.top = plv->yTop;
// We can not do a simple multiply here as we may run into
// a case where this will overflow an int..
if (plv->fGroupView)
{
ldy = (LONG)dy;
}
else
{
ldy = (LONG)dy * plv->cyItem;
}
// handle case where dy is large (greater than int...)
if ((ldy > rc.bottom) || (ldy < -rc.bottom))
{
InvalidateRect(plv->ci.hwnd, NULL, TRUE);
plv->ptlRptOrigin.x += dx;
plv->ptlRptOrigin.y += ldy;
}
else
{
SMOOTHSCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SSIF_SCROLLPROC;
si.hwnd = plv->ci.hwnd;
si.dx = -dx;
si.dy = (int)-ldy;
si.lprcSrc = NULL;
si.lprcClip = &rc;
si.hrgnUpdate = NULL;
si.lprcUpdate = NULL;
si.fuScroll =SW_INVALIDATE | SW_ERASE | uSmooth;
si.pfnScrollProc = ListView_RScroll2_SmoothScroll;
SmoothScrollWindow(&si);
/// this causes horrible flicker/repaint on deletes.
// if this is a problem with UI scrolling, we'll have to pass through a
// flag when to use this
///UpdateWindow(plv->ci.hwnd);
}
// if Horizontal scrolling, we should update the location of the
// left hand edge of the window...
//
if (dx != 0)
{
RECT rcHdr;
GetWindowRect(plv->hwndHdr, &rcHdr);
MapWindowRect(HWND_DESKTOP, plv->ci.hwnd, &rcHdr);
SetWindowPos(plv->hwndHdr, NULL, rcHdr.left - dx, rcHdr.top,
rcHdr.right - rcHdr.left + dx,
rcHdr.bottom - rcHdr.top,
SWP_NOZORDER | SWP_NOACTIVATE);
}
}
}
//-------------------------------------------------------------------
// Make sure that specified item is visible for report view.
// Must handle Large number of items...
BOOL ListView_ROnEnsureVisible(LV* plv, int iItem, BOOL fPartialOK)
{
LONG dy;
LONG yTop;
LONG lyTop;
yTop = plv->yTop;
// lyTop = where our item is right now
if (plv->fGroupView)
{
LISTITEM* pitem = ListView_GetItemPtr(plv, iItem);
RECT rcBounds;
ListView_RGetRects(plv, iItem, NULL, NULL, &rcBounds, NULL);
if (pitem)
{
LISTGROUP* pgrp = ListView_FindFirstVisibleGroup(plv);
if (pitem->pGroup == pgrp && pgrp)
{
rcBounds.top -= max(pgrp->cyTitle + 6, plv->rcBorder.top) + plv->paddingTop;
}
}
lyTop = rcBounds.top;
}
else
{
lyTop = (LONG)iItem * plv->cyItem - plv->ptlRptOrigin.y + plv->yTop;
}
// If visible below yTop and our bottom is visible above client bottom,
// then we're happy.
if ((lyTop >= (LONG)yTop) &&
((lyTop + plv->cyItem) <= (LONG)plv->sizeClient.cy))
return(TRUE); // we are visible
dy = lyTop - yTop;
if (dy >= 0)
{
// dy = how many pixels we need to scroll to come into view
dy = lyTop + plv->cyItem - plv->sizeClient.cy;
if (dy < 0)
dy = 0;
}
if (dy)
{
int iRound = ((dy > 0) ? 1 : -1) * (plv->cyItem - 1);
if (!plv->fGroupView)
{
// Now convert into the number of items to scroll...
// Groupview uses pixels not items, so this calculation is not needed in groupview.
dy = (dy + iRound) / plv->cyItem;
}
ListView_RScroll2(plv, 0, (int)dy, 0);
if (ListView_RedrawEnabled(plv))
{
ListView_UpdateScrollBars(plv);
}
else
{
ListView_DeleteHrgnInval(plv);
plv->hrgnInval = (HRGN)ENTIRE_REGION;
plv->flags |= LVF_ERASE;
}
}
return TRUE;
}
int ListView_RGetScrollUnitsPerLine(LV* plv, UINT sb)
{
int cLine;
if (sb == SB_VERT)
{
if (plv->fGroupView)
{
cLine = plv->cyItem;
}
else
{
cLine = 1;
}
}
else
{
cLine = plv->cxLabelChar;
}
return cLine;
}
void ListView_ROnScroll(LV* plv, UINT code, int posNew, UINT sb)
{
int cLine = ListView_RGetScrollUnitsPerLine(plv, sb);
ListView_ComOnScroll(plv, code, posNew, sb, cLine, -1);
}
BOOL ListView_RRecomputeEx(LV* plv, HDPA hdpaSort, int iFrom, BOOL fForce)
{
if (plv->fGroupView && plv->hdpaGroups)
{
LISTGROUP* pgrp;
int cGroups;
int iAccumulatedHeight = 0;
int i;
int cItems = ListView_Count(plv);
int iGroupItem;
LISTITEM* pitem;
for (iGroupItem = 0; iGroupItem < cItems; iGroupItem++)
{
LV_ITEM item = {0};
pitem = ListView_FastGetItemPtr(plv, iGroupItem);
if (!pitem)
break;
item.iItem = iGroupItem;
item.lParam = pitem->lParam;
if (!LISTITEM_HASASKEDFORGROUP(pitem))
{
item.mask = LVIF_GROUPID;
ListView_OnGetItem(plv, &item);
}
}
if (iFrom > 0)
{
LISTGROUP* pgrpPrev = DPA_FastGetPtr(plv->hdpaGroups, iFrom - 1);
iAccumulatedHeight = pgrpPrev->rc.bottom + plv->paddingBottom;
}
// Need to do this afterwards because we may have added groups in the above block
cGroups = DPA_GetPtrCount(plv->hdpaGroups);
for (i = iFrom; i < cGroups; i++)
{
pgrp = DPA_FastGetPtr(plv->hdpaGroups, i);
if (!pgrp) // Huh?
break;
cItems = DPA_GetPtrCount(pgrp->hdpa);
if (cItems == 0)
{
SetRect(&pgrp->rc, 0, 0, 0, 0);
}
else
{
int iGroupItem;
RECT rcBoundsPrev = {0};
if (pgrp->pszHeader && (pgrp->cyTitle == 0 || fForce))
{
RECT rc = {0, 0, 1000, 0};
HDC hdc = GetDC(plv->ci.hwnd);
HFONT hfontOld = SelectObject(hdc, plv->hfontGroup);
DrawText(hdc, pgrp->pszHeader, -1, &rc, DT_LV | DT_CALCRECT);
SelectObject(hdc, hfontOld);
ReleaseDC(plv->ci.hwnd, hdc);
pgrp->cyTitle = RECTHEIGHT(rc);
}
iAccumulatedHeight += max(plv->rcBorder.top, pgrp->cyTitle + 6) + plv->paddingTop;
SetRect(&pgrp->rc, plv->rcBorder.left, iAccumulatedHeight,
plv->sizeClient.cx - plv->rcBorder.right, iAccumulatedHeight + cItems * (plv->cyItem + LV_DETAILSPADDING) + plv->paddingBottom);
iAccumulatedHeight += RECTHEIGHT(pgrp->rc);
for (iGroupItem = 0; iGroupItem < cItems; iGroupItem++)
{
LISTITEM* pitem = DPA_FastGetPtr(pgrp->hdpa, iGroupItem);
if (!pitem)
break;
pitem->pt.x = 0;
pitem->pt.y = pgrp->rc.top + iGroupItem * (plv->cyItem + LV_DETAILSPADDING);
}
}
}
SetRectEmpty(&plv->rcView);
// Find the first group with an item in it.
for (i = 0; i < cGroups; i++)
{
pgrp = DPA_FastGetPtr(plv->hdpaGroups, i);
if (DPA_GetPtrCount(pgrp->hdpa) > 0)
{
plv->rcView.top = pgrp->rc.top - max(plv->rcBorder.top, pgrp->cyTitle + 6) - plv->paddingTop;
plv->rcView.left = pgrp->rc.left - plv->rcBorder.left - plv->paddingLeft;
break;
}
}
for (i = cGroups - 1; i >= 0; i--)
{
pgrp = DPA_FastGetPtr(plv->hdpaGroups, i);
if (DPA_GetPtrCount(pgrp->hdpa))
{
plv->rcView.bottom = pgrp->rc.bottom + plv->rcBorder.bottom + plv->paddingBottom;
break;
}
}
ListView_UpdateScrollBars(plv);
}
return TRUE;
}