able/windows-nt
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity
windows-nt/Source/XPSP1/NT/shell/comctl32/v5/lvicon.c

3485 lines
102 KiB
C
Raw Permalink Normal View History

Add source files
2020-09-26 03:20:57 -05:00
// large icon view stuff
#include "ctlspriv.h"
#include "listview.h"
#if defined(FE_IME) || !defined(WINNT)
static TCHAR const szIMECompPos[]=TEXT("IMECompPos");
#endif
__inline int ICONCXLABEL(LV *plv, LISTITEM *pitem)
{
if (plv->ci.style & LVS_NOLABELWRAP) {
ASSERT(pitem->cxSingleLabel == pitem->cxMultiLabel);
}
return pitem->cxMultiLabel;
}
int LV_GetNewColWidth(LV* plv, int iFirst, int iLast);
void LV_AdjustViewRectOnMove(LV* plv, LISTITEM *pitem, int x, int y);
UINT LV_IsItemOnViewEdge(LV* plv, LISTITEM *pitem);
void ListView_RecalcRegion(LV *plv, BOOL fForce, BOOL fRedraw);
extern BOOL g_fSlowMachine;
BOOL ListView_IDrawItem(PLVDRAWITEM plvdi)
{
RECT rcIcon;
RECT rcLabel;
RECT rcBounds;
RECT rcT;
TCHAR ach[CCHLABELMAX];
LV_ITEM item;
int i = (int) plvdi->nmcd.nmcd.dwItemSpec;
LV* plv = plvdi->plv;
LISTITEM FAR* pitem;
BOOL fUnfolded;
if (ListView_IsOwnerData(plv))
{
LISTITEM litem;
// moved here to reduce call backs in OWNERDATA case
item.iItem = i;
item.iSubItem = 0;
item.mask = LVIF_TEXT | LVIF_STATE | LVIF_IMAGE;
item.stateMask = LVIS_ALL;
item.pszText = ach;
item.cchTextMax = ARRAYSIZE(ach);
ListView_OnGetItem(plv, &item);
litem.pszText = item.pszText;
ListView_GetRectsOwnerData(plv, i, &rcIcon, &rcLabel, &rcBounds, NULL, &litem);
pitem = NULL;
}
else
{
pitem = ListView_GetItemPtr(plv, i);
// NOTE this will do a GetItem LVIF_TEXT iff needed
ListView_GetRects(plv, i, &rcIcon, &rcLabel, &rcBounds, NULL);
}
fUnfolded = FALSE;
if ( (plvdi->flags & LVDI_UNFOLDED) || ListView_IsItemUnfolded(plv, i))
{
ListView_UnfoldRects(plv, i, &rcIcon, &rcLabel, &rcBounds, NULL );
fUnfolded = TRUE;
}
if (!plvdi->prcClip || IntersectRect(&rcT, &rcBounds, plvdi->prcClip))
{
UINT fText;
if (!ListView_IsOwnerData(plv))
{
item.iItem = i;
item.iSubItem = 0;
item.mask = LVIF_TEXT | LVIF_STATE | LVIF_IMAGE;
item.stateMask = LVIS_ALL;
item.pszText = ach;
item.cchTextMax = ARRAYSIZE(ach);
ListView_OnGetItem(plv, &item);
// Make sure the listview hasn't been altered during
// the callback to get the item info
if (pitem != ListView_GetItemPtr(plv, i))
return FALSE;
}
if (plvdi->lpptOrg)
{
OffsetRect(&rcIcon, plvdi->lpptOrg->x - rcBounds.left,
plvdi->lpptOrg->y - rcBounds.top);
OffsetRect(&rcLabel, plvdi->lpptOrg->x - rcBounds.left,
plvdi->lpptOrg->y - rcBounds.top);
}
if (ListView_IsIconView(plv))
{
fText = ListView_DrawImage(plv, &item, plvdi->nmcd.nmcd.hdc,
rcIcon.left + g_cxIconMargin, rcIcon.top + g_cyIconMargin, plvdi->flags);
// If linebreaking needs to happen, then use SHDT_DRAWTEXT.
// Otherwise, use our (hopefully faster) internal SHDT_ELLIPSES
if (rcLabel.bottom - rcLabel.top > plv->cyLabelChar)
fText |= SHDT_DRAWTEXT;
else
fText |= SHDT_ELLIPSES;
// We only use DT_NOFULLWIDTHCHARBREAK on Korean(949) Memphis and NT5
if (949 == g_uiACP && (g_bRunOnNT5 || g_bRunOnMemphis))
fText |= SHDT_NODBCSBREAK;
}
else
{
fText = ListView_DrawImage(plv, &item, plvdi->nmcd.nmcd.hdc,
rcIcon.left, rcIcon.top, plvdi->flags);
}
// Don't draw label if it's being edited...
//
if (plv->iEdit != i)
{
// If multiline label, then we need to use DrawText
if (rcLabel.bottom - rcLabel.top > plv->cyLabelChar)
{
fText |= SHDT_DRAWTEXT;
// If the text is folded, we need to clip and add ellipses
if (!fUnfolded)
fText |= SHDT_CLIPPED | SHDT_DTELLIPSIS;
if ( ListView_IsOwnerData(plv) )
{
// If owner data, we have no z-order and if long names they will over lap each
// other, better to truncate for now...
if (ListView_IsSmallView(plv))
fText |= SHDT_ELLIPSES;
}
}
else
fText |= SHDT_ELLIPSES;
if (plvdi->flags & LVDI_TRANSTEXT)
fText |= SHDT_TRANSPARENT;
if ((fText & SHDT_SELECTED) && (plvdi->flags & LVDI_HOTSELECTED))
fText |= SHDT_HOTSELECTED;
if (item.pszText && (*item.pszText))
{
#ifdef WINDOWS_ME
if(plv->dwExStyle & WS_EX_RTLREADING)
fText |= SHDT_RTLREADING;
#endif
SHDrawText(plvdi->nmcd.nmcd.hdc, item.pszText, &rcLabel, LVCFMT_LEFT, fText,
plv->cyLabelChar, plv->cxEllipses,
plvdi->nmcd.clrText, plvdi->nmcd.clrTextBk);
if ((plvdi->flags & LVDI_FOCUS) && (item.state & LVIS_FOCUSED)
#ifdef KEYBOARDCUES
&& !(CCGetUIState(&(plvdi->plv->ci)) & UISF_HIDEFOCUS)
#endif
)
{
DrawFocusRect(plvdi->nmcd.nmcd.hdc, &rcLabel);
}
}
}
}
return TRUE;
}
void ListView_RefoldLabelRect(LV* plv, RECT *prcLabel, LISTITEM *pitem)
{
int bottom = pitem->cyUnfoldedLabel;
bottom = min(bottom, pitem->cyFoldedLabel);
bottom = min(bottom, CLIP_HEIGHT);
prcLabel->bottom = prcLabel->top + bottom;
}
int NEAR ListView_IItemHitTest(LV* plv, int x, int y, UINT FAR* pflags, int *piSubItem)
{
int iHit;
UINT flags;
POINT pt;
RECT rcLabel;
RECT rcIcon;
RECT rcState;
if (piSubItem)
*piSubItem = 0;
// Map window-relative coordinates to view-relative coords...
//
pt.x = x + plv->ptOrigin.x;
pt.y = y + plv->ptOrigin.y;
// If there are any uncomputed items, recompute them now.
//
if (plv->rcView.left == RECOMPUTE)
ListView_Recompute(plv);
flags = 0;
if (ListView_IsOwnerData( plv ))
{
int cSlots;
POINT ptWnd;
LISTITEM item;
cSlots = ListView_GetSlotCount( plv, TRUE );
iHit = ListView_CalcHitSlot( plv, pt, cSlots );
if (iHit < ListView_Count(plv))
{
ListView_IGetRectsOwnerData( plv, iHit, &rcIcon, &rcLabel, &item, FALSE );
ptWnd.x = x;
ptWnd.y = y;
if (PtInRect(&rcIcon, ptWnd))
{
flags = LVHT_ONITEMICON;
}
else if (PtInRect(&rcLabel, ptWnd))
{
flags = LVHT_ONITEMLABEL;
}
}
}
else
{
for (iHit = 0; (iHit < ListView_Count(plv)); iHit++)
{
LISTITEM FAR* pitem = ListView_FastGetZItemPtr(plv, iHit);
POINT ptItem;
ptItem.x = pitem->pt.x;
ptItem.y = pitem->pt.y;
rcIcon.top = ptItem.y - g_cyIconMargin;
rcLabel.top = ptItem.y + plv->cyIcon + g_cyLabelSpace;
rcLabel.bottom = rcLabel.top + pitem->cyUnfoldedLabel;
if ( !ListView_IsItemUnfoldedPtr(plv, pitem) )
ListView_RefoldLabelRect(plv, &rcLabel, pitem);
// Quick, easy rejection test...
//
if (pt.y < rcIcon.top || pt.y >= rcLabel.bottom)
continue;
rcIcon.left = ptItem.x - g_cxIconMargin;
rcIcon.right = ptItem.x + plv->cxIcon + g_cxIconMargin;
// We need to make sure there is no gap between the icon and label
rcIcon.bottom = rcLabel.top;
rcState.bottom = ptItem.y + plv->cyIcon;
rcState.right = ptItem.x;
rcState.top = rcState.bottom - plv->cyState;
rcState.left = rcState.right - plv->cxState;
rcLabel.left = ptItem.x + (plv->cxIcon / 2) - (ICONCXLABEL(plv, pitem) / 2);
rcLabel.right = rcLabel.left + ICONCXLABEL(plv, pitem);
if (plv->cxState && PtInRect(&rcState, pt))
{
flags = LVHT_ONITEMSTATEICON;
}
else if (PtInRect(&rcIcon, pt))
{
flags = LVHT_ONITEMICON;
}
else if (PtInRect(&rcLabel, pt))
{
flags = LVHT_ONITEMLABEL;
}
if (flags)
break;
}
}
if (flags == 0)
{
flags = LVHT_NOWHERE;
iHit = -1;
}
else
{
if (!ListView_IsOwnerData( plv ))
{
iHit = DPA_GetPtrIndex(plv->hdpa, ListView_FastGetZItemPtr(plv, iHit));
}
}
*pflags = flags;
return iHit;
}
// BUGBUG raymondc
// need to pass HDC here isnce it's sometimes called from the paint loop
void NEAR ListView_IGetRectsOwnerData( LV* plv,
int iItem,
RECT FAR* prcIcon,
RECT FAR* prcLabel,
LISTITEM* pitem,
BOOL fUsepitem )
{
int itemIconXLabel;
int cSlots;
// calculate x, y from iItem
cSlots = ListView_GetSlotCount( plv, TRUE );
pitem->iWorkArea = 0; // OwnerData doesn't support workareas
ListView_SetIconPos( plv, pitem, iItem, cSlots );
// calculate lable sizes from iItem
ListView_RecomputeLabelSize( plv, pitem, iItem, NULL, fUsepitem);
if (plv->ci.style & LVS_NOLABELWRAP)
{
// use single label
itemIconXLabel = pitem->cxSingleLabel;
}
else
{
// use multilabel
itemIconXLabel = pitem->cxMultiLabel;
}
prcIcon->left = pitem->pt.x - g_cxIconMargin - plv->ptOrigin.x;
prcIcon->right = prcIcon->left + plv->cxIcon + 2 * g_cxIconMargin;
prcIcon->top = pitem->pt.y - g_cyIconMargin - plv->ptOrigin.y;
prcIcon->bottom = prcIcon->top + plv->cyIcon + 2 * g_cyIconMargin;
prcLabel->left = pitem->pt.x + (plv->cxIcon / 2) - (itemIconXLabel / 2) - plv->ptOrigin.x;
prcLabel->right = prcLabel->left + itemIconXLabel;
prcLabel->top = pitem->pt.y + plv->cyIcon + g_cyLabelSpace - plv->ptOrigin.y;
prcLabel->bottom = prcLabel->top + pitem->cyUnfoldedLabel;
if ( !ListView_IsItemUnfolded(plv, iItem) )
ListView_RefoldLabelRect(plv, prcLabel, pitem);
}
// out:
// prcIcon icon bounds including icon margin area
void NEAR ListView_IGetRects(LV* plv, LISTITEM FAR* pitem, RECT FAR* prcIcon, RECT FAR* prcLabel, LPRECT prcBounds)
{
int cxIconMargin;
ASSERT( !ListView_IsOwnerData( plv ) );
if (pitem->pt.x == RECOMPUTE) {
ListView_Recompute(plv);
}
if (ListView_IsIconView(plv) && ((plv->cxIconSpacing - plv->cxIcon) < (2 * g_cxIconMargin)))
cxIconMargin = (plv->cxIconSpacing - plv->cxIcon) / 2;
else
cxIconMargin = g_cxIconMargin;
prcIcon->left = pitem->pt.x - cxIconMargin - plv->ptOrigin.x;
prcIcon->right = prcIcon->left + plv->cxIcon + 2 * cxIconMargin;
prcIcon->top = pitem->pt.y - g_cyIconMargin - plv->ptOrigin.y;
prcIcon->bottom = prcIcon->top + plv->cyIcon + 2 * g_cyIconMargin;
prcLabel->left = pitem->pt.x + (plv->cxIcon / 2) - (ICONCXLABEL(plv, pitem) / 2) - plv->ptOrigin.x;
prcLabel->right = prcLabel->left + ICONCXLABEL(plv, pitem);
prcLabel->top = pitem->pt.y + plv->cyIcon + g_cyLabelSpace - plv->ptOrigin.y;
prcLabel->bottom = prcLabel->top + pitem->cyUnfoldedLabel;
if ( !ListView_IsItemUnfoldedPtr(plv, pitem) )
ListView_RefoldLabelRect(plv, prcLabel, pitem);
}
int NEAR ListView_GetSlotCountEx(LV* plv, BOOL fWithoutScrollbars, int iWorkArea)
{
int cxScreen;
int cyScreen;
int dxItem;
int dyItem;
int iSlots = 1;
BOOL fCheckWithScroll = FALSE;
DWORD style = 0;
// Always use the current client window size to determine
//
// REVIEW: Should we exclude any vertical scroll bar that may
// exist when computing this? progman.exe does not.
//
if ((iWorkArea >= 0 ) && (plv->nWorkAreas > 0))
{
ASSERT(iWorkArea < plv->nWorkAreas);
cxScreen = RECTWIDTH(plv->prcWorkAreas[iWorkArea]);
cyScreen = RECTHEIGHT(plv->prcWorkAreas[iWorkArea]);
}
else
{
cxScreen = plv->sizeClient.cx;
cyScreen = plv->sizeClient.cy;
}
if (fWithoutScrollbars)
{
style = ListView_GetWindowStyle(plv);
if (style & WS_VSCROLL)
{
cxScreen += ListView_GetCxScrollbar(plv);
}
if (style & WS_HSCROLL)
{
cyScreen += ListView_GetCyScrollbar(plv);
}
}
if (ListView_IsSmallView(plv))
dxItem = plv->cxItem;
else
dxItem = lv_cxIconSpacing;
if (ListView_IsSmallView(plv))
dyItem = plv->cyItem;
else
dyItem = lv_cyIconSpacing;
if (!dxItem)
dxItem = 1;
if (!dyItem)
dyItem = 1;
// Lets see which direction the view states
switch (plv->ci.style & LVS_ALIGNMASK)
{
case LVS_ALIGNBOTTOM:
case LVS_ALIGNTOP:
#ifndef UNIX
iSlots = max(1, (cxScreen) / dxItem);
#else
iSlots = max(1, (cxScreen) / max(1,dxItem));
#endif
fCheckWithScroll = (BOOL)(style & WS_VSCROLL);
break;
case LVS_ALIGNRIGHT:
case LVS_ALIGNLEFT:
#ifndef UNIX
iSlots = max(1, (cyScreen) / dyItem);
#else
iSlots = max(1, (cyScreen) / max(1,dyItem));
#endif
fCheckWithScroll = (BOOL)(style & WS_HSCROLL);
break;
default:
ASSERT(0);
return 1;
}
// if we don't have enough slots total on the screen, we're going to have
// a scrollbar, so recompute with the scrollbars on
if (fWithoutScrollbars && fCheckWithScroll) {
int iTotalSlots = (dxItem * dyItem);
if (iTotalSlots < ListView_Count(plv)) {
iSlots = ListView_GetSlotCountEx(plv, FALSE, iWorkArea);
}
}
return iSlots;
}
int NEAR ListView_GetSlotCount(LV* plv, BOOL fWithoutScrollbars)
{
// Make sure this function does exactly the same thing as when
// we had no workareas
return ListView_GetSlotCountEx(plv, fWithoutScrollbars, -1);
}
// get the pixel row (or col in left align) of pitem
int LV_GetItemPixelRow(LV* plv, LISTITEM* pitem)
{
if ((plv->ci.style & LVS_ALIGNMASK) == LVS_ALIGNLEFT) {
return pitem->pt.x;
} else {
return pitem->pt.y;
}
}
// get the pixel row (or col in left align) of the lowest item
int LV_GetMaxPlacedItem(LV* plv)
{
int i;
int iMaxPlacedItem = 0;
for (i = 0; i < ListView_Count(plv); i++) {
LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, i);
if (pitem->pt.y != RECOMPUTE) {
int iRow = LV_GetItemPixelRow(plv, pitem);
// if the current item is "below" (on right if it's left aligned)
// the lowest placed item, we can start appending
if (!i || iRow > iMaxPlacedItem)
iMaxPlacedItem = iRow;
}
}
return iMaxPlacedItem;;
}
// Go through and recompute any icon positions and optionally
// icon label dimensions.
//
// This function also recomputes the view bounds rectangle.
//
// The algorithm is to simply search the list for any items needing
// recomputation. For icon positions, we scan possible icon slots
// and check to see if any already-positioned icon intersects the slot.
// If not, the slot is free. As an optimization, we start scanning
// icon slots from the previous slot we found.
//
void NEAR ListView_Recompute(LV* plv)
{
int i;
int cSlots;
int cWorkAreaSlots[LV_MAX_WORKAREAS];
BOOL fUpdateSB;
// if all the items are unplaced, we can just keep appending
BOOL fAppendAtEnd = (((UINT)ListView_Count(plv)) == plv->uUnplaced);
int iFree;
plv->uUnplaced = 0;
if (!(ListView_IsIconView(plv) || ListView_IsSmallView(plv)))
return;
if (plv->flags & LVF_INRECOMPUTE)
{
return;
}
plv->flags |= LVF_INRECOMPUTE;
cSlots = ListView_GetSlotCount(plv, FALSE);
if (plv->nWorkAreas > 0)
for (i = 0; i < plv->nWorkAreas; i++)
cWorkAreaSlots[i] = ListView_GetSlotCountEx(plv, FALSE, i);
// Scan all items for RECOMPUTE, and recompute slot if needed.
//
fUpdateSB = (plv->rcView.left == RECOMPUTE);
if (!ListView_IsOwnerData( plv ))
{
LVFAKEDRAW lvfd; // in case client uses customdraw
LV_ITEM item; // in case client uses customdraw
int iMaxPlacedItem = RECOMPUTE;
item.mask = LVIF_PARAM;
item.iSubItem = 0;
ListView_BeginFakeCustomDraw(plv, &lvfd, &item);
if (!fAppendAtEnd)
iMaxPlacedItem = LV_GetMaxPlacedItem(plv);
// Must keep in local variable because ListView_SetIconPos will keep
// invalidating the iFreeSlot cache while we're looping
iFree = plv->iFreeSlot;
for (i = 0; i < ListView_Count(plv); i++)
{
int cRealSlots;
LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, i);
BOOL fRedraw = FALSE;
cRealSlots = (plv->nWorkAreas > 0) ? cWorkAreaSlots[pitem->iWorkArea] : cSlots;
if (pitem->pt.y == RECOMPUTE)
{
if (pitem->cyFoldedLabel == SRECOMPUTE)
{
// Get the item lParam only if we need it for customdraw
item.iItem = i;
item.lParam = pitem->lParam;
ListView_BeginFakeItemDraw(&lvfd);
ListView_RecomputeLabelSize(plv, pitem, i, lvfd.nmcd.nmcd.hdc, FALSE);
ListView_EndFakeItemDraw(&lvfd);
}
// BUGBUG: (dli) This function gets a new icon postion and then goes
// through the whole set of items to see if that position is occupied
// should let it know in the multi-workarea case, it only needs to go
// through those who are in the same workarea.
// This is okay for now because we cannot have too many items on the
// desktop.
iFree = ListView_FindFreeSlot(plv, i, iFree + 1, cRealSlots, &fUpdateSB, &fAppendAtEnd, lvfd.nmcd.nmcd.hdc);
ASSERT(iFree != -1);
ListView_SetIconPos(plv, pitem, iFree, cRealSlots);
if (!fAppendAtEnd) {
//// optimization. each time we calc a new free slot, we iterate through all the items to see
// if any of the freely placed items collide with this.
// fAppendAtEnd indicates that iFree is beyond any freely placed item
//
// if the current item is "below" (on right if it's left aligned)
// the lowest placed item, we can start appending
if (LV_GetItemPixelRow(plv, pitem) > iMaxPlacedItem)
fAppendAtEnd = TRUE;
}
if (!fUpdateSB && LV_IsItemOnViewEdge(plv, pitem))
fUpdateSB = TRUE;
fRedraw = TRUE;
}
if (fRedraw)
{
ListView_InvalidateItem(plv, i, FALSE, RDW_INVALIDATE | RDW_ERASE);
}
}
plv->iFreeSlot = iFree;
ListView_EndFakeCustomDraw(&lvfd);
}
// If we changed something, recompute the view rectangle
// and then update the scroll bars.
//
if (fUpdateSB || plv->rcView.left == RECOMPUTE )
{
TraceMsg(TF_GENERAL, "************ LV: Expensive update! ******* ");
// NOTE: No infinite recursion results because we're setting
// plv->rcView.left != RECOMPUTE
//
SetRectEmpty(&plv->rcView);
if (ListView_IsOwnerData( plv ))
{
if (ListView_Count( plv ) > 0)
{
RECT rcLast;
RECT rcItem;
int iSlots;
int iItem = ListView_Count( plv ) - 1;
ListView_GetRects( plv, 0, NULL, NULL, &plv->rcView, NULL );
ListView_GetRects( plv, iItem, NULL, NULL, &rcLast, NULL );
plv->rcView.right = rcLast.right;
plv->rcView.bottom = rcLast.bottom;
//
// calc how far back in the list to check
//
iSlots = cSlots + 2;
// REVIEW: This cache hint notification causes a spurious
// hint, since this happens often but is always the last items
// available. Should this hint be done at all and this information
// be cached local to the control?
ListView_NotifyCacheHint( plv, max( 0, iItem - iSlots), iItem );
// move backwards from last item until either rc.right or
// rc.left is greater than the last, then use that value.
// Note: This code makes very little assumptions about the ordering
// done. We should be careful as multiple line text fields could
// mess us up.
for( iItem--;
(iSlots > 0) && (iItem >= 0);
iSlots--, iItem--)
{
RECT rcIcon;
RECT rcLabel;
ListView_GetRects( plv, iItem, &rcIcon, &rcLabel, &rcItem, NULL );
ListView_UnfoldRects( plv, iItem, &rcIcon, &rcLabel, &rcItem, NULL );
if (rcItem.right > rcLast.right)
{
plv->rcView.right = rcItem.right;
}
if (rcItem.bottom > rcLast.bottom)
{
plv->rcView.bottom = rcItem.bottom;
}
}
}
}
else
{
for (i = 0; i < ListView_Count(plv); i++)
{
RECT rcIcon;
RECT rcLabel;
RECT rcItem;
ListView_GetRects(plv, i, &rcIcon, &rcLabel, &rcItem, NULL);
ListView_UnfoldRects(plv, i, &rcIcon, &rcLabel, &rcItem, NULL);
UnionRect(&plv->rcView, &plv->rcView, &rcItem);
}
}
// add a little space at the edges so that we don't bump text
// completely to the end of the window
plv->rcView.bottom += g_cyEdge;
plv->rcView.right += g_cxEdge;
OffsetRect(&plv->rcView, plv->ptOrigin.x, plv->ptOrigin.y);
//TraceMsg(DM_TRACE, "RECOMPUTE: rcView %x %x %x %x", plv->rcView.left, plv->rcView.top, plv->rcView.right, plv->rcView.bottom);
//TraceMsg(DM_TRACE, "Origin %x %x", plv->ptOrigin.x, plv->ptOrigin.y);
ListView_UpdateScrollBars(plv);
}
ListView_RecalcRegion(plv, FALSE, TRUE);
// Now state we are out of the recompute...
plv->flags &= ~LVF_INRECOMPUTE;
}
void NEAR PASCAL NearestSlot(int FAR *x, int FAR *y, int cxItem, int cyItem, LPRECT prcWork)
{
if (prcWork != NULL)
{
*x = *x - prcWork->left;
*y = *y - prcWork->top;
}
if (*x < 0)
*x -= cxItem/2;
else
*x += cxItem/2;
if (*y < 0)
*y -= cyItem/2;
else
*y += cyItem/2;
*x = *x - (*x % cxItem);
*y = *y - (*y % cyItem);
if (prcWork != NULL)
{
*x = *x + prcWork->left;
*y = *y + prcWork->top;
}
}
void NEAR PASCAL NextSlot(LV* plv, LPRECT lprc)
{
int cxItem;
if (ListView_IsSmallView(plv))
{
cxItem = plv->cxItem;
}
else
{
cxItem = lv_cxIconSpacing;
}
lprc->left += cxItem;
lprc->right += cxItem;
}
//-------------------------------------------------------------------
//
//-------------------------------------------------------------------
void ListView_CalcMinMaxIndex( LV* plv, PRECT prcBounding, int* iMin, int* iMax )
{
POINT pt;
int cSlots;
cSlots = ListView_GetSlotCount( plv, TRUE );
pt.x = prcBounding->left + plv->ptOrigin.x;
pt.y = prcBounding->top + plv->ptOrigin.y;
*iMin = ListView_CalcHitSlot( plv, pt, cSlots );
pt.x = prcBounding->right + plv->ptOrigin.x;
pt.y = prcBounding->bottom + plv->ptOrigin.y;
*iMax = ListView_CalcHitSlot( plv, pt, cSlots ) + 1;
}
//-------------------------------------------------------------------
//
// Function: ListView_CalcHitSlot
//
// Summary: Given a point (relative to complete icon view), calculate
// which slot that point is closest to.
//
// Arguments:
// plv [in] - List view to work with
// pt [in] - location to check with
// cslot [in] - number of slots wide the current view is
//
// Notes: This does not guarentee that the point is hitting the item
// located at that slot. That should be checked by comparing rects.
//
// History:
// Nov-1-1994 MikeMi Added to improve Ownerdata hit testing
//
//-------------------------------------------------------------------
int ListView_CalcHitSlot( LV* plv, POINT pt, int cSlot )
{
int cxItem;
int cyItem;
int iSlot = 0;
ASSERT(plv);
if (cSlot < 1)
cSlot = 1;
if (ListView_IsSmallView(plv))
{
cxItem = plv->cxItem;
cyItem = plv->cyItem;
}
else
{
cxItem = lv_cxIconSpacing;
cyItem = lv_cyIconSpacing;
}
// Lets see which direction the view states
switch (plv->ci.style & LVS_ALIGNMASK)
{
case LVS_ALIGNBOTTOM:
// Assert False (Change default in shell2d.. to ALIGN_TOP)
case LVS_ALIGNTOP:
iSlot = (pt.x / cxItem) + (pt.y / cyItem) * cSlot;
break;
case LVS_ALIGNLEFT:
iSlot = (pt.x / cxItem) * cSlot + (pt.y / cyItem);
break;
case LVS_ALIGNRIGHT:
ASSERT(FALSE); // Not implemented yet...
break;
}
return( iSlot );
}
void _GetCurrentItemSize(LV* plv, int * pcx, int *pcy)
{
if (ListView_IsSmallView(plv))
{
*pcx = plv->cxItem;
*pcy = plv->cyItem;
}
else
{
*pcx = lv_cxIconSpacing;
*pcy = lv_cyIconSpacing;
}
}
DWORD ListView_IApproximateViewRect(LV* plv, int iCount, int iWidth, int iHeight)
{
int cxSave = plv->sizeClient.cx;
int cySave = plv->sizeClient.cy;
int cxItem;
int cyItem;
int cCols;
int cRows;
plv->sizeClient.cx = iWidth;
plv->sizeClient.cy = iHeight;
cCols = ListView_GetSlotCount(plv, TRUE);
plv->sizeClient.cx = cxSave;
plv->sizeClient.cy = cySave;
cCols = min(cCols, iCount);
if (cCols == 0)
cCols = 1;
cRows = (iCount + cCols - 1) / cCols;
if (plv->ci.style & (LVS_ALIGNLEFT | LVS_ALIGNRIGHT)) {
int c;
c = cCols;
cCols = cRows;
cRows = c;
}
_GetCurrentItemSize(plv, &cxItem, &cyItem);
iWidth = cCols * cxItem;
iHeight = cRows * cyItem;
return MAKELONG(iWidth + g_cxEdge, iHeight + g_cyEdge);
}
void NEAR _CalcSlotRect(LV* plv, LISTITEM *pItem, int iSlot, int cSlot, BOOL fBias, LPRECT lprc)
{
int cxItem, cyItem;
ASSERT(plv);
if (cSlot < 1)
cSlot = 1;
_GetCurrentItemSize(plv, &cxItem, &cyItem);
// Lets see which direction the view states
switch (plv->ci.style & LVS_ALIGNMASK)
{
case LVS_ALIGNBOTTOM:
// Assert False (Change default in shell2d.. to ALIGN_TOP)
case LVS_ALIGNTOP:
lprc->left = (iSlot % cSlot) * cxItem;
lprc->top = (iSlot / cSlot) * cyItem;
break;
case LVS_ALIGNRIGHT:
RIPMSG(0, "LVM_ARRANGE: Invalid listview icon arrangement style");
// ASSERT(FALSE); // Not implemented yet...
// fall through, use LVS_ALIGNLEFT instead
case LVS_ALIGNLEFT:
lprc->top = (iSlot % cSlot) * cyItem;
lprc->left = (iSlot / cSlot) * cxItem;
break;
}
if (fBias)
{
lprc->left -= plv->ptOrigin.x;
lprc->top -= plv->ptOrigin.y;
}
lprc->bottom = lprc->top + cyItem;
lprc->right = lprc->left + cxItem;
// Multi-Workarea case offset from the workarea coordinate to the whole
// listview coordinate.
if (plv->nWorkAreas > 0)
{
ASSERT(pItem);
ASSERT(pItem->iWorkArea < plv->nWorkAreas);
OffsetRect(lprc, plv->prcWorkAreas[pItem->iWorkArea].left, plv->prcWorkAreas[pItem->iWorkArea].top);
}
}
// Intersect this rectangle with all items in this listview except myself,
// this will determine if this rectangle overlays any icons.
BOOL NEAR ListView_IsCleanRect(LV * plv, RECT * prc, int iExcept, BOOL * pfUpdate, HDC hdc)
{
int j;
RECT rc;
int cItems = ListView_Count(plv);
for (j = cItems; j-- > 0; )
{
if (j == iExcept)
continue;
else
{
LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, j);
if (pitem->pt.y != RECOMPUTE)
{
// If the dimensions aren't computed, then do it now.
//
if (pitem->cyFoldedLabel == SRECOMPUTE)
{
ListView_RecomputeLabelSize(plv, pitem, j, hdc, FALSE);
// Ensure that the item gets redrawn...
//
ListView_InvalidateItem(plv, j, FALSE, RDW_INVALIDATE | RDW_ERASE);
// Set flag indicating that scroll bars need to be
// adjusted.
//
if (LV_IsItemOnViewEdge(plv, pitem))
*pfUpdate = TRUE;
}
ListView_GetRects(plv, j, NULL, NULL, &rc, NULL);
if (IntersectRect(&rc, &rc, prc))
return FALSE;
}
}
}
return TRUE;
}
// Find an icon slot that doesn't intersect an icon.
// Start search for free slot from slot i.
//
int NEAR ListView_FindFreeSlot(LV* plv, int iItem, int i, int cSlot, BOOL FAR* pfUpdate,
BOOL FAR *pfAppend, HDC hdc)
{
RECT rcSlot;
RECT rcItem;
RECT rc;
LISTITEM FAR * pItemLooking = ListView_FastGetItemPtr(plv, iItem);
ASSERT(!ListView_IsOwnerData( plv ));
// Horrible N-squared algorithm:
// enumerate each slot and see if any items intersect it.
//
// REVIEW: This is really slow with long lists (e.g., 1000)
//
//
// If the Append at end is set, we should be able to simply get the
// rectangle of the i-1 element and check against it instead of
// looking at every other item...
//
if (*pfAppend)
{
int iPrev = iItem - 1;
// Be carefull about going of the end of the list. (i is a slot
// number not an item index).
if (plv->nWorkAreas > 0)
{
while (iPrev >= 0)
{
LISTITEM FAR * pPrev = ListView_FastGetItemPtr(plv, iPrev);
if (pPrev->iWorkArea == pItemLooking->iWorkArea)
break;
iPrev--;
}
}
if (iPrev >= 0)
ListView_GetRects(plv, iPrev, NULL, NULL, &rcItem, NULL);
else
SetRect(&rcItem, 0, 0, 0, 0);
}
for ( ; ; i++)
{
// Compute view-relative slot rectangle...
//
_CalcSlotRect(plv, pItemLooking, i, cSlot, TRUE, &rcSlot);
if (*pfAppend)
{
if (!IntersectRect(&rc, &rcItem, &rcSlot)) {
return i; // Found a free slot...
}
}
if (ListView_IsCleanRect(plv, &rcSlot, iItem, pfUpdate, hdc))
break;
}
return i;
}
// Recompute an item's label size (cxLabel/cyLabel). For speed, this function
// is passed a DC to use for text measurement.
//
// If hdc is NULL, then this function will create and initialize a temporary
// DC, then destroy it. If hdc is non-NULL, then it is assumed to have
// the correct font already selected into it.
//
// fUsepitem means not to use the text of the item. Instead, use the text
// pointed to by the pitem structure. This is used in two cases.
//
// - Ownerdata, because we don't have a real pitem.
// - Regulardata, where we already found the pitem text (as an optimizatin)
//
void NEAR ListView_RecomputeLabelSize(LV* plv, LISTITEM FAR* pitem, int i, HDC hdc, BOOL fUsepitem)
{
TCHAR szLabel[CCHLABELMAX + 4];
TCHAR szLabelFolded[ARRAYSIZE(szLabel) + CCHELLIPSES + CCHELLIPSES];
int cchLabel;
RECT rcSingle, rcFolded, rcUnfolded;
LVFAKEDRAW lvfd;
LV_ITEM item;
ASSERT(plv);
// the following will use the passed in pitem text instead of calling
// GetItem. This would be two consecutive calls otherwise, in some cases.
//
if (fUsepitem && (pitem->pszText != LPSTR_TEXTCALLBACK))
{
Str_GetPtr0(pitem->pszText, szLabel, ARRAYSIZE(szLabel));
item.lParam = pitem->lParam;
}
else
{
item.mask = LVIF_TEXT | LVIF_PARAM;
item.iItem = i;
item.iSubItem = 0;
item.pszText = szLabel;
item.cchTextMax = ARRAYSIZE(szLabel);
item.stateMask = 0;
szLabel[0] = TEXT('\0'); // In case the OnGetItem fails
ListView_OnGetItem(plv, &item);
if (!item.pszText)
{
SetRectEmpty(&rcSingle);
rcFolded = rcSingle;
rcUnfolded = rcSingle;
goto Exit;
}
if (item.pszText != szLabel)
lstrcpyn(szLabel, item.pszText, ARRAYSIZE(szLabel));
}
cchLabel = lstrlen(szLabel);
rcUnfolded.left = rcUnfolded.top = rcUnfolded.bottom = 0;
rcUnfolded.right = lv_cxIconSpacing - g_cxLabelMargin * 2;
rcSingle = rcUnfolded;
rcFolded = rcUnfolded;
if (cchLabel > 0)
{
UINT flags;
if (!hdc) { // Set up fake customdraw
ListView_BeginFakeCustomDraw(plv, &lvfd, &item);
ListView_BeginFakeItemDraw(&lvfd);
} else
lvfd.nmcd.nmcd.hdc = hdc; // Use the one the app gave us
#if 0 // Don't do this - Stripping trailing spaces results in unwanted ellipses
// Strip off spaces so they're not included in format
// REVIEW: Is this is a DrawText bug?
//
while (cchLabel > 1 && szLabel[cchLabel - 1] == TEXT(' '))
szLabel[--cchLabel] = 0;
#endif
DrawText(lvfd.nmcd.nmcd.hdc, szLabel, cchLabel, &rcSingle, (DT_LV | DT_CALCRECT));
if (plv->ci.style & LVS_NOLABELWRAP) {
flags = DT_LV | DT_CALCRECT;
} else {
flags = DT_LVWRAP | DT_CALCRECT;
// We only use DT_NOFULLWIDTHCHARBREAK on Korean(949) Memphis and NT5
if (949 == g_uiACP && (g_bRunOnNT5 || g_bRunOnMemphis))
flags |= DT_NOFULLWIDTHCHARBREAK;
}
DrawText(lvfd.nmcd.nmcd.hdc, szLabel, cchLabel, &rcUnfolded, flags);
//
// DrawText with DT_MODIFYSTRING is quirky when you enable
// word ellipses. Once it finds anything that requires ellipses,
// it stops and doesn't return anything else (even if those other
// things got displayed).
//
lstrcpy(szLabelFolded, szLabel);
DrawText(lvfd.nmcd.nmcd.hdc, szLabelFolded, cchLabel, &rcFolded, flags | DT_WORD_ELLIPSIS | DT_MODIFYSTRING);
// If we had to ellipsify, but you can't tell from looking at the
// rcFolded.bottom and rcUnfolded.bottom, then tweak rcFolded.bottom
// so the unfoldifier knows that unfolding is worthwhile.
if (rcFolded.bottom == rcUnfolded.bottom &&
lstrcmp(szLabel, szLabelFolded))
{
// The actual value isn't important, as long as it's greater
// than rcUnfolded.bottom and CLIP_HEIGHT. We take advantage
// of the fact that CLIP_HEIGHT is only two lines, so the only
// problem case is where you have a two-line item and only the
// first line is ellipsified.
rcFolded.bottom++;
}
if (!hdc) { // Clean up fake customdraw
ListView_EndFakeItemDraw(&lvfd);
ListView_EndFakeCustomDraw(&lvfd);
}
}
else
{
rcFolded.bottom = rcUnfolded.bottom = rcUnfolded.top + plv->cyLabelChar;
}
Exit:
if (pitem) {
int cyEdge;
pitem->cxSingleLabel = (short)((rcSingle.right - rcSingle.left) + 2 * g_cxLabelMargin);
pitem->cxMultiLabel = (short)((rcUnfolded.right - rcUnfolded.left) + 2 * g_cxLabelMargin);
cyEdge = (plv->ci.style & LVS_NOLABELWRAP) ? 0 : g_cyEdge;
pitem->cyFoldedLabel = (short)((rcFolded.bottom - rcFolded.top) + cyEdge);
pitem->cyUnfoldedLabel = (short)((rcUnfolded.bottom - rcUnfolded.top) + cyEdge);
}
}
// Set up an icon slot position. Returns FALSE if position didn't change.
//
BOOL NEAR ListView_SetIconPos(LV* plv, LISTITEM FAR* pitem, int iSlot, int cSlot)
{
RECT rc;
ASSERT(plv);
//
// Sort of a hack, this internal function return TRUE if small icon.
_CalcSlotRect(plv, pitem, iSlot, cSlot, FALSE, &rc);
if (ListView_IsIconView(plv))
{
rc.left += ((lv_cxIconSpacing - plv->cxIcon) / 2);
rc.top += g_cyIconOffset;
}
if (rc.left != pitem->pt.x || rc.top != pitem->pt.y)
{
LV_AdjustViewRectOnMove(plv, pitem, rc.left, rc.top);
return TRUE;
}
return FALSE;
}
void NEAR ListView_GetViewRect2(LV* plv, RECT FAR* prcView, int cx, int cy)
{
if (plv->rcView.left == RECOMPUTE)
ListView_Recompute(plv);
*prcView = plv->rcView;
//
// Offsets for scrolling.
//
OffsetRect(prcView, -plv->ptOrigin.x, -plv->ptOrigin.y);
if (ListView_IsIconView(plv) || ListView_IsSmallView(plv))
{
// don't do that funky half-re-origining thing.
RECT rc;
rc.left = 0;
rc.top = 0;
rc.right = cx;
rc.bottom = cy;
UnionRect(prcView, prcView, &rc);
#if 0
// if we're scrolled way in the positive area (plv->ptOrigin > 0), make sure we
// include our true origin
if ((prcView->left > -plv->ptOrigin.x))
prcView->left = -plv->ptOrigin.x;
if ((prcView->top > -plv->ptOrigin.y))
prcView->top = -plv->ptOrigin.y;
// if we're scrolled way in the positive area (plv->ptOrigin > 0),
// make sure our scrollbars include our current position
if ((prcView->right < (plv->sizeClient.cx)))
prcView->right = plv->sizeClient.cx;
if ((prcView->bottom < (plv->sizeClient.cy)))
prcView->bottom = plv->sizeClient.cy;
#endif
}
}
// prcViewRect used only if fSubScroll is TRUE
DWORD NEAR ListView_GetClientRect(LV* plv, RECT FAR* prcClient, BOOL fSubScroll, RECT FAR *prcViewRect)
{
RECT rcClient;
RECT rcView;
DWORD style;
#if 1
// do this instead of the #else below because
// in new versus old apps, you may need to add in g_c?Border because of
// the one pixel overlap...
GetWindowRect(plv->ci.hwnd, &rcClient);
if (GetWindowLong(plv->ci.hwnd, GWL_EXSTYLE) & (WS_EX_CLIENTEDGE | WS_EX_STATICEDGE | WS_EX_WINDOWEDGE)) {
rcClient.right -= 2 * g_cxEdge;
rcClient.bottom -= 2 * g_cyEdge;
}
rcClient.right -= rcClient.left;
rcClient.bottom -= rcClient.top;
if (rcClient.right < 0)
rcClient.right = 0;
if (rcClient.bottom < 0)
rcClient.bottom = 0;
rcClient.top = rcClient.left = 0;
#else
style = ListView_GetWindowStyle(plv);
GetClientRect(plv->ci.hwnd, &rcClient);
if (style & WS_VSCROLL)
rcClient.right += ListView_GetCxScrollbar(plv);
if (style & WS_HSCROLL)
rcClient.bottom += ListView_GetCyScrollbar(plv);
#endif
style = 0L;
if (fSubScroll)
{
ListView_GetViewRect2(plv, &rcView, 0, 0);
if ((rcClient.left < rcClient.right) && (rcClient.top < rcClient.bottom))
{
do
{
if (!(style & WS_HSCROLL) &&
(rcView.left < rcClient.left || rcView.right > rcClient.right))
{
style |= WS_HSCROLL;
rcClient.bottom -= ListView_GetCyScrollbar(plv); // BUGBUG what if not SB yet?
}
if (!(style & WS_VSCROLL) &&
(rcView.top < rcClient.top || rcView.bottom > rcClient.bottom))
{
style |= WS_VSCROLL;
rcClient.right -= ListView_GetCxScrollbar(plv);
}
}
while (!(style & WS_HSCROLL) && rcView.right > rcClient.right);
}
if (prcViewRect)
*prcViewRect = rcView;
}
*prcClient = rcClient;
return style;
}
int CALLBACK ArrangeIconCompare(LISTITEM FAR* pitem1, LISTITEM FAR* pitem2, LPARAM lParam)
{
int v1, v2;
// REVIEW: lParam can be 0 and we fault ... bug in caller, but we might want to be robust here.
if (HIWORD(lParam))
{
// Vertical arrange
v1 = pitem1->pt.x / GET_X_LPARAM(lParam);
v2 = pitem2->pt.x / GET_X_LPARAM(lParam);
if (v1 > v2)
return 1;
else if (v1 < v2)
return -1;
else
{
int y1 = pitem1->pt.y;
int y2 = pitem2->pt.y;
if (y1 > y2)
return 1;
else if (y1 < y2)
return -1;
}
}
else
{
v1 = pitem1->pt.y / (int)lParam;
v2 = pitem2->pt.y / (int)lParam;
if (v1 > v2)
return 1;
else if (v1 < v2)
return -1;
else
{
int x1 = pitem1->pt.x;
int x2 = pitem2->pt.x;
if (x1 > x2)
return 1;
else if (x1 < x2)
return -1;
}
}
return 0;
}
void NEAR PASCAL _ListView_GetRectsFromItem(LV* plv, BOOL bSmallIconView,
LISTITEM FAR *pitem,
LPRECT prcIcon, LPRECT prcLabel, LPRECT prcBounds, LPRECT prcSelectBounds)
{
RECT rcIcon;
RECT rcLabel;
if (!prcIcon)
prcIcon = &rcIcon;
if (!prcLabel)
prcLabel = &rcLabel;
// Test for NULL item passed in
if (pitem)
{
// This routine is called during ListView_Recompute(), while
// plv->rcView.left may still be == RECOMPUTE. So, we can't
// test that to see if recomputation is needed.
//
if (pitem->pt.y == RECOMPUTE || pitem->cyFoldedLabel == SRECOMPUTE)
ListView_Recompute(plv);
if (bSmallIconView)
ListView_SGetRects(plv, pitem, prcIcon, prcLabel, prcBounds);
else
// ListView_IGetRects already refolds as necessary
ListView_IGetRects(plv, pitem, prcIcon, prcLabel, prcBounds);
if (prcBounds)
{
UnionRect(prcBounds, prcIcon, prcLabel);
if (plv->himlState && (LV_StateImageValue(pitem)))
{
prcBounds->left -= plv->cxState;
}
}
} else {
SetRectEmpty(prcIcon);
*prcLabel = *prcIcon;
if (prcBounds)
*prcBounds = *prcIcon;
}
if (prcSelectBounds)
{
UnionRect(prcSelectBounds, prcIcon, prcLabel);
}
}
void NEAR _ListView_InvalidateItemPtr(LV* plv, BOOL bSmallIcon, LISTITEM FAR *pitem, UINT fRedraw)
{
RECT rcBounds;
ASSERT( !ListView_IsOwnerData( plv ));
_ListView_GetRectsFromItem(plv, bSmallIcon, pitem, NULL, NULL, &rcBounds, NULL);
RedrawWindow(plv->ci.hwnd, &rcBounds, NULL, fRedraw);
}
// return TRUE if things still overlap
// this only happens if we tried to unstack things, and there was NOSCROLL set and
// items tried to go off the deep end
BOOL NEAR PASCAL ListView_IUnstackOverlaps(LV* plv, HDPA hdpaSort, int iDirection)
{
BOOL fRet = FALSE;
int i;
int iCount;
BOOL bSmallIconView;
RECT rcItem, rcItem2, rcTemp;
int cxItem, cyItem;
LISTITEM FAR* pitem;
LISTITEM FAR* pitem2;
ASSERT( !ListView_IsOwnerData( plv ) );
if (bSmallIconView = ListView_IsSmallView(plv))
{
cxItem = plv->cxItem;
cyItem = plv->cyItem;
}
else
{
cxItem = lv_cxIconSpacing;
cyItem = lv_cyIconSpacing;
}
iCount = ListView_Count(plv);
// finally, unstack any overlaps
for (i = 0 ; i < iCount ; i++) {
int j;
pitem = DPA_GetPtr(hdpaSort, i);
if (bSmallIconView) {
_ListView_GetRectsFromItem(plv, bSmallIconView, pitem, NULL, NULL, &rcItem, NULL);
}
// move all the items that overlap with us
for (j = i+1 ; j < iCount; j++) {
POINT ptOldPos;
pitem2 = DPA_GetPtr(hdpaSort, j);
ptOldPos = pitem2->pt;
if (bSmallIconView) {
// for small icons, we need to do an intersect rect
_ListView_GetRectsFromItem(plv, bSmallIconView, pitem2, NULL, NULL, &rcItem2, NULL);
if (IntersectRect(&rcTemp, &rcItem, &rcItem2)) {
// yes, it intersects. move it out
_ListView_InvalidateItemPtr(plv, bSmallIconView, pitem2, RDW_INVALIDATE| RDW_ERASE);
do {
pitem2->pt.x += (cxItem * iDirection);
} while (PtInRect(&rcItem, pitem2->pt));
} else {
// no more intersect!
break;
}
} else {
// for large icons, just find the ones that share the x,y;
if (pitem2->pt.x == pitem->pt.x && pitem2->pt.y == pitem->pt.y) {
_ListView_InvalidateItemPtr(plv, bSmallIconView, pitem2, RDW_INVALIDATE| RDW_ERASE);
pitem2->pt.x += (cxItem * iDirection);
} else {
// no more intersect!
break;
}
}
if (plv->ci.style & LVS_NOSCROLL) {
if (pitem2->pt.x < 0 || pitem2->pt.y < 0 ||
pitem2->pt.x > (plv->sizeClient.cx - (cxItem/2))||
pitem2->pt.y > (plv->sizeClient.cy - (cyItem/2))) {
pitem2->pt = ptOldPos;
fRet = TRUE;
}
}
// invalidate the new position as well
_ListView_InvalidateItemPtr(plv, bSmallIconView, pitem2, RDW_INVALIDATE| RDW_ERASE);
}
}
return fRet;
}
BOOL NEAR PASCAL ListView_SnapToGrid(LV* plv, HDPA hdpaSort)
{
// this algorithm can't fit in the structure of the other
// arrange loop without becoming n^2 or worse.
// this algorithm is order n.
// iterate through and snap to the nearest grid.
// iterate through and push aside overlaps.
int i;
int iCount;
LPARAM xySpacing;
int x,y;
LISTITEM FAR* pitem;
BOOL bSmallIconView;
int cxItem, cyItem;
ASSERT( !ListView_IsOwnerData( plv ) );
if (bSmallIconView = ListView_IsSmallView(plv))
{
cxItem = plv->cxItem;
cyItem = plv->cyItem;
}
else
{
cxItem = lv_cxIconSpacing;
cyItem = lv_cyIconSpacing;
}
iCount = ListView_Count(plv);
// first snap to nearest grid
for (i = 0; i < iCount; i++) {
pitem = DPA_GetPtr(hdpaSort, i);
x = pitem->pt.x;
y = pitem->pt.y;
if (!bSmallIconView) {
x -= ((lv_cxIconSpacing - plv->cxIcon) / 2);
y -= g_cyIconOffset;
}
NearestSlot(&x,&y, cxItem, cyItem, (plv->nWorkAreas > 0) ? &(plv->prcWorkAreas[pitem->iWorkArea]) : NULL);
if (!bSmallIconView) {
x += ((lv_cxIconSpacing - plv->cxIcon) / 2);
y += g_cyIconOffset;
}
if (x != pitem->pt.x || y != pitem->pt.y) {
_ListView_InvalidateItemPtr(plv, bSmallIconView, pitem, RDW_INVALIDATE| RDW_ERASE);
if ((plv->ci.style & LVS_NOSCROLL) && (plv->nWorkAreas == 0)) {
// if it's marked noscroll, make sure it's still on the client region
while (x >= (plv->sizeClient.cx - (cxItem/2)))
x -= cxItem;
while (x < 0)
x += cxItem;
while (y >= (plv->sizeClient.cy - (cyItem/2)))
y -= cyItem;
while (y < 0)
y += cyItem;
}
pitem->pt.x = x;
pitem->pt.y = y;
plv->iFreeSlot = -1; // The "free slot" cache is no good once an item moves
_ListView_InvalidateItemPtr(plv, bSmallIconView, pitem, RDW_INVALIDATE| RDW_ERASE);
}
}
// now resort the dpa
switch (plv->ci.style & LVS_ALIGNMASK)
{
case LVS_ALIGNLEFT:
case LVS_ALIGNRIGHT:
xySpacing = MAKELONG(bSmallIconView ? plv->cxItem : lv_cxIconSpacing, TRUE);
break;
default:
xySpacing = MAKELONG(bSmallIconView ? plv->cyItem : lv_cyIconSpacing, FALSE);
}
if (!DPA_Sort(hdpaSort, ArrangeIconCompare, xySpacing))
return FALSE;
// go in one direction, if there are still overlaps, go in the other
// direction as well
if (ListView_IUnstackOverlaps(plv, hdpaSort, 1))
ListView_IUnstackOverlaps(plv, hdpaSort, -1);
return FALSE;
}
BOOL NEAR ListView_OnArrange(LV* plv, UINT style)
{
BOOL bSmallIconView;
LPARAM xySpacing;
HDPA hdpaSort = NULL;
bSmallIconView = ListView_IsSmallView(plv);
if (!bSmallIconView && !ListView_IsIconView(plv)) {
return FALSE;
}
if (ListView_IsOwnerData( plv ))
{
if ( style & (LVA_SNAPTOGRID | LVA_SORTASCENDING | LVA_SORTDESCENDING) )
{
RIPMSG(0, "LVM_ARRANGE: Cannot combine LVA_SNAPTOGRID or LVA_SORTxxx with owner-data");
return( FALSE );
}
}
// Make sure our items have positions and their text rectangles
// caluculated
if (plv->rcView.left == RECOMPUTE)
ListView_Recompute(plv);
if (!ListView_IsOwnerData( plv ))
{
// we clone plv->hdpa so we don't blow away indices that
// apps have saved away.
// we sort here to make the nested for loop below more bearable.
hdpaSort = DPA_Clone(plv->hdpa, NULL);
if (!hdpaSort)
return FALSE;
}
switch (plv->ci.style & LVS_ALIGNMASK)
{
case LVS_ALIGNLEFT:
case LVS_ALIGNRIGHT:
xySpacing = MAKELONG(bSmallIconView ? plv->cxItem : lv_cxIconSpacing, TRUE);
break;
default:
xySpacing = MAKELONG(bSmallIconView ? plv->cyItem : lv_cyIconSpacing, FALSE);
}
if (ListView_IsOwnerData( plv ))
{
ListView_CommonArrange(plv, style, NULL);
}
else
{
if (!DPA_Sort(hdpaSort, ArrangeIconCompare, xySpacing))
return FALSE;
ListView_CommonArrange(plv, style, hdpaSort);
DPA_Destroy(hdpaSort);
}
MyNotifyWinEvent(EVENT_OBJECT_REORDER, plv->ci.hwnd, OBJID_CLIENT, 0);
return TRUE;
}
// Arrange the icons given a sorted hdpa, and arrange them in the sub workareas
BOOL NEAR ListView_CommonArrangeEx(LV* plv, UINT style, HDPA hdpaSort, int iWorkArea)
{
int iSlot;
int iItem;
int cSlots;
int cWorkAreaSlots[LV_MAX_WORKAREAS];
BOOL fItemMoved;
RECT rcLastItem;
RECT rcSlot;
RECT rcT;
BOOL bSmallIconView;
BOOL bIconView;
int xMin = 0;
bSmallIconView = ListView_IsSmallView(plv);
bIconView = ListView_IsIconView(plv);
//
// when this is an autoarrange, then we dont need to worry about
// scrolling the origin, because we are going to arrange everything
// around the positive side of the origin
//
if (LVA_DEFAULT == style && (plv->ci.style & LVS_AUTOARRANGE))
{
if (plv->ptOrigin.x < 0)
plv->ptOrigin.x = 0;
if (plv->ptOrigin.y < 0)
plv->ptOrigin.y = 0;
}
// REVIEW, this causes a repaint if we are scrollled
// we can probably avoid this some how
fItemMoved = (plv->ptOrigin.x != 0) || (plv->ptOrigin.y != 0);
if (!ListView_IsOwnerData( plv ))
{
if (style == LVA_SNAPTOGRID) {
// (dli) This function is fitting all the icons into just one rectangle,
// namely sizeClient. We need to make it multi-workarea aware if we want
// multi-workarea for the general case (i.e. other than just the desktop)
// This is never called in the desktop case.
fItemMoved |= ListView_SnapToGrid(plv, hdpaSort);
} else {
if (plv->nWorkAreas > 0)
{
int i;
for (i = 0; i < plv->nWorkAreas; i++)
cWorkAreaSlots[i] = ListView_GetSlotCountEx(plv, TRUE, i);
}
else
cSlots = ListView_GetSlotCount(plv, TRUE);
SetRectEmpty(&rcLastItem);
// manipulate only the sorted version of the item list below!
iSlot = 0;
for (iItem = 0; iItem < ListView_Count(plv); iItem++)
{
int cRealSlots;
RECT rcIcon, rcLabel;
LISTITEM FAR* pitem = DPA_GetPtr(hdpaSort, iItem);
// (dli) In the multi-workarea case, if this item is not in our
// workarea, skip it.
if (pitem->iWorkArea != iWorkArea)
continue;
cRealSlots = (plv->nWorkAreas > 0) ? cWorkAreaSlots[pitem->iWorkArea] : cSlots;
if (bSmallIconView || bIconView)
{
for ( ; ; )
{
_CalcSlotRect(plv, pitem, iSlot, cRealSlots, FALSE, &rcSlot);
if (!IntersectRect(&rcT, &rcSlot, &rcLastItem))
break;
iSlot++;
}
}
fItemMoved |= ListView_SetIconPos(plv, pitem, iSlot++, cRealSlots);
// do this instead of ListView_GetRects() because we need
// to use the pitem from the sorted hdpa, not the ones in *plv
_ListView_GetRectsFromItem(plv, bSmallIconView, pitem, &rcIcon, &rcLabel, &rcLastItem, NULL);
// f-n above will return unfolded rects if there are any, we must make sure
// we use folded ones for slot allocations
if (bIconView)
{
if (ListView_IsItemUnfoldedPtr(plv, pitem))
{
ListView_RefoldLabelRect(plv, &rcLabel, pitem);
UnionRect(&rcLastItem, &rcIcon, &rcLabel);
if (plv->himlState && (LV_StateImageValue(pitem)))
rcLastItem.left -= plv->cxState;
}
}
//
// Keep track of the minimum x as we don't want negative values
// when we finish.
if (rcLastItem.left < xMin)
xMin = rcLastItem.left;
}
//
// See if we need to scroll the items over to make sure that all of the
// no items are hanging off the left hand side.
//
if (xMin < 0)
{
for (iItem = 0; iItem < ListView_Count(plv); iItem++)
{
LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, iItem);
pitem->pt.x -= xMin; // scroll them over
}
plv->rcView.left = RECOMPUTE; // need to recompute.
fItemMoved = TRUE;
}
}
}
//
// We might as well invalidate the entire window to make sure...
if (fItemMoved) {
if (ListView_RedrawEnabled(plv))
RedrawWindow(plv->ci.hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE);
else {
ListView_DeleteHrgnInval(plv);
plv->hrgnInval = (HRGN)ENTIRE_REGION;
plv->flags |= LVF_ERASE;
}
// ensure important items are visible
iItem = (plv->iFocus >= 0) ? plv->iFocus : ListView_OnGetNextItem(plv, -1, LVNI_SELECTED);
if (iItem >= 0)
ListView_OnEnsureVisible(plv, iItem, FALSE);
if (ListView_RedrawEnabled(plv))
ListView_UpdateScrollBars(plv);
}
return TRUE;
}
// this arranges the icon given a sorted hdpa.
// Arrange the workareas one by one in the multi-workarea case.
BOOL NEAR ListView_CommonArrange(LV* plv, UINT style, HDPA hdpaSort)
{
if (plv->nWorkAreas < 1)
{
if (plv->exStyle & LVS_EX_MULTIWORKAREAS)
return TRUE;
else
return ListView_CommonArrangeEx(plv, style, hdpaSort, 0);
}
else
{
int i;
for (i = 0; i < plv->nWorkAreas; i++)
ListView_CommonArrangeEx(plv, style, hdpaSort, i);
return TRUE;
}
}
void NEAR ListView_IUpdateScrollBars(LV* plv)
{
RECT rcClient;
RECT rcView;
DWORD style;
DWORD styleOld;
SCROLLINFO si;
int ixDelta = 0, iyDelta = 0;
int iNewPos;
BOOL fReupdate = FALSE;
styleOld = ListView_GetWindowStyle(plv);
style = ListView_GetClientRect(plv, &rcClient, TRUE, &rcView);
// Grow scrolling rect to origin if necessary.
if (rcView.left > 0)
{
rcView.left = 0;
}
if (rcView.top > 0)
{
rcView.top = 0;
}
//TraceMsg(TF_LISTVIEW, "ListView_GetClientRect %x %x %x %x", rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
//TraceMsg(TF_LISTVIEW, "ListView_GetViewRect2 %x %x %x %x", rcView.left, rcView.top, rcView.right, rcView.bottom);
//TraceMsg(TF_LISTVIEW, "rcView %x %x %x %x", plv->rcView.left, plv->rcView.top, plv->rcView.right, plv->rcView.bottom);
//TraceMsg(TF_LISTVIEW, "Origin %x %x", plv->ptOrigin.x, plv->ptOrigin.y);
si.cbSize = sizeof(SCROLLINFO);
if (style & WS_HSCROLL)
{
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
si.nMin = 0;
si.nMax = rcView.right - rcView.left - 1;
//TraceMsg(TF_LISTVIEW, "si.nMax rcView.right - rcView.left - 1 %x", si.nMax);
si.nPage = rcClient.right - rcClient.left;
//TraceMsg(TF_LISTVIEW, "si.nPage %x", si.nPage);
si.nPos = rcClient.left - rcView.left;
if (si.nPos < 0)
{
// with the new rcView calculations, I don't think
// rcView.left is ever larger than rcClient.left. msq
ASSERT(0);
si.nPos = 0;
}
//TraceMsg(TF_LISTVIEW, "si.nPos %x", si.nPos);
ListView_SetScrollInfo(plv, SB_HORZ, &si, TRUE);
// 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;
}
}
}
else if (styleOld & WS_HSCROLL)
{
ListView_SetScrollRange(plv, SB_HORZ, 0, 0, TRUE);
}
if (style & WS_VSCROLL)
{
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
si.nMin = 0;
si.nMax = rcView.bottom - rcView.top - 1;
si.nPage = rcClient.bottom - rcClient.top;
si.nPos = rcClient.top - rcView.top;
if (si.nPos < 0)
{
// with the new rcView calculations, I don't think
// rcView.top is ever larger than rcClient.top. msq
ASSERT(0);
si.nPos = 0;
}
ListView_SetScrollInfo(plv, SB_VERT, &si, TRUE);
// 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) {
iyDelta = iNewPos - (int)si.nPos;
fReupdate = TRUE;
}
}
}
else if (styleOld & WS_VSCROLL)
{
ListView_SetScrollRange(plv, SB_VERT, 0, 0, TRUE);
}
if (fReupdate) {
// we shouldn't recurse because the second time through, si.nPos >0
ListView_IScroll2(plv, ixDelta, iyDelta, 0);
ListView_IUpdateScrollBars(plv);
TraceMsg(TF_WARNING, "LISTVIEW: ERROR: We had to recurse!");
}
#if 0
if ((styleOld ^ style) & (WS_HSCROLL | WS_VSCROLL)) {
SetWindowPos(plv->ci.hwnd, NULL, 0,0,0,0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE| SWP_FRAMECHANGED);
}
#endif
}
void FAR PASCAL ListView_ComOnScroll(LV* plv, UINT code, int posNew, int sb,
int cLine, int cPage)
{
int pos;
SCROLLINFO si;
BOOL fVert = (sb == SB_VERT);
UINT uSmooth = 0;
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
if (!ListView_GetScrollInfo(plv, sb, &si)) {
return;
}
if (cPage != -1)
si.nPage = cPage;
si.nMax -= (si.nPage - 1);
if (si.nMax < si.nMin)
si.nMax = si.nMin;
pos = (int)si.nPos; // current position
switch (code)
{
case SB_LEFT:
si.nPos = si.nMin;
break;
case SB_RIGHT:
si.nPos = si.nMax;
break;
case SB_PAGELEFT:
si.nPos -= si.nPage;
break;
case SB_LINELEFT:
si.nPos -= cLine;
break;
case SB_PAGERIGHT:
si.nPos += si.nPage;
break;
case SB_LINERIGHT:
si.nPos += cLine;
break;
case SB_THUMBTRACK:
si.nPos = posNew;
uSmooth = SSW_EX_IMMEDIATE;
break;
case SB_ENDSCROLL:
// When scroll bar tracking is over, ensure scroll bars
// are properly updated...
//
ListView_UpdateScrollBars(plv);
return;
default:
return;
}
if (plv->iScrollCount >= SMOOTHSCROLLLIMIT)
uSmooth = SSW_EX_IMMEDIATE;
si.fMask = SIF_POS;
si.nPos = ListView_SetScrollInfo(plv, sb, &si, TRUE);
if (pos != si.nPos)
{
int delta = (int)si.nPos - pos;
int dx = 0, dy = 0;
if (fVert)
dy = delta;
else
dx = delta;
_ListView_Scroll2(plv, dx, dy, uSmooth);
UpdateWindow(plv->ci.hwnd);
}
}
//
// 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_IScroll2_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->ptOrigin.x -= dx;
plv->ptOrigin.y -= dy;
}
// Now do what SmoothScrollWindow would've done if we weren't
// a callback
return ScrollWindowEx(hwnd, dx, dy, prcScroll, prcClip, hrgnUpdate, prcUpdate, flags);
}
void FAR PASCAL ListView_IScroll2(LV* plv, int dx, int dy, UINT uSmooth)
{
if (dx | dy)
{
if ((plv->clrBk == CLR_NONE) && (plv->pImgCtx == NULL))
{
plv->ptOrigin.x += dx;
plv->ptOrigin.y += dy;
LVSeeThruScroll(plv, NULL);
}
else
{
SMOOTHSCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SSIF_SCROLLPROC;
si.hwnd = plv->ci.hwnd;
si.dx = -dx;
si.dy = -dy;
si.lprcSrc = NULL;
si.lprcClip = NULL;
si.hrgnUpdate = NULL;
si.lprcUpdate = NULL;
si.fuScroll = uSmooth | SW_INVALIDATE | SW_ERASE;
si.pfnScrollProc = ListView_IScroll2_SmoothScroll;
SmoothScrollWindow(&si);
}
}
}
void NEAR ListView_IOnScroll(LV* plv, UINT code, int posNew, UINT sb)
{
int cLine;
if (sb == SB_VERT)
{
cLine = lv_cyIconSpacing / 2;
}
else
{
cLine = lv_cxIconSpacing / 2;
}
ListView_ComOnScroll(plv, code, posNew, sb,
cLine, -1);
}
int NEAR ListView_IGetScrollUnitsPerLine(LV* plv, UINT sb)
{
int cLine;
if (sb == SB_VERT)
{
cLine = lv_cyIconSpacing / 2;
}
else
{
cLine = lv_cxIconSpacing / 2;
}
return cLine;
}
// NOTE: there is very similar code in the treeview
//
// Totally disgusting hack in order to catch VK_RETURN
// before edit control gets it.
//
LRESULT CALLBACK ListView_EditWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
LV* plv = ListView_GetPtr(GetParent(hwnd));
LRESULT lret;
ASSERT(plv);
#if defined(FE_IME) || !defined(WINNT)
if ( (g_fDBCSInputEnabled) && LOWORD(GetKeyboardLayout(0L)) == 0x0411 )
{
// The following code adds IME awareness to the
// listview's label editing. Currently just for Japanese.
//
DWORD dwGcs;
if (msg==WM_SIZE)
{
// If it's given the size, tell it to an IME.
ListView_SizeIME(hwnd);
}
else if (msg == EM_SETLIMITTEXT )
{
if (wParam < 13)
plv->flags |= LVF_DONTDRAWCOMP;
else
plv->flags &= ~LVF_DONTDRAWCOMP;
}
// Give up to draw IME composition by ourselves in case
// we're working on SFN. Win95d-5709
else if (!(plv->flags & LVF_DONTDRAWCOMP ))
{
switch (msg)
{
case WM_IME_STARTCOMPOSITION:
case WM_IME_ENDCOMPOSITION:
return 0L;
case WM_IME_COMPOSITION:
// If lParam has no data available bit, it implies
// canceling composition.
// ListView_InsertComposition() tries to get composition
// string w/ GCS_COMPSTR then remove it from edit control if
// nothing is available.
//
if ( !lParam )
dwGcs = GCS_COMPSTR;
else
dwGcs = (DWORD) lParam;
ListView_InsertComposition(hwnd, wParam, dwGcs, plv);
return 0L;
case WM_PAINT:
lret=CallWindowProc(plv->pfnEditWndProc, hwnd, msg, wParam, lParam);
ListView_PaintComposition(hwnd,plv);
return lret;
case WM_IME_SETCONTEXT:
// We draw composition string.
//
lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
break;
default:
// the other messages should simply be processed
// in this subclass procedure.
break;
}
}
}
#endif FE_IME
switch (msg)
{
case WM_SETTEXT:
SetWindowID(hwnd, 1);
break;
case WM_KEYDOWN:
switch (wParam)
{
case VK_RETURN:
ListView_DismissEdit(plv, FALSE);
return 0L;
case VK_ESCAPE:
ListView_DismissEdit(plv, TRUE);
return 0L;
}
break;
case WM_CHAR:
switch (wParam)
{
case VK_RETURN:
// Eat the character, so edit control wont beep!
return 0L;
}
break;
case WM_GETDLGCODE:
return DLGC_WANTALLKEYS | DLGC_HASSETSEL; /* editing name, no dialog handling right now */
}
return CallWindowProc(plv->pfnEditWndProc, hwnd, msg, wParam, lParam);
}
// Helper routine for SetEditSize
void ListView_ChangeEditRectForRegion(LV* plv, LPRECT lprc)
{
LISTITEM FAR* pitem = ListView_GetItemPtr(plv, plv->iEdit);
ASSERT(!ListView_IsOwnerData(plv));
ASSERT(ListView_IsIconView(plv));
if (!EqualRect((CONST RECT *)&pitem->rcTextRgn, (CONST RECT *)lprc)) {
// RecalcRegion knows to use rcTextRgn in the case where iEdit != -1,
// so set it up before calling through.
CopyRect(&pitem->rcTextRgn, (CONST RECT *)lprc);
ListView_RecalcRegion(plv, TRUE, TRUE);
// Invalidate the entire Edit and force a repaint from the listview
// on down to make sure we don't leave turds...
InvalidateRect(plv->hwndEdit, NULL, TRUE);
UpdateWindow(plv->ci.hwnd);
}
}
// BUGBUG: very similar routine in treeview
void NEAR ListView_SetEditSize(LV* plv)
{
RECT rcLabel;
UINT seips;
if (!((plv->iEdit >= 0) && (plv->iEdit < ListView_Count(plv))))
{
ListView_DismissEdit(plv, TRUE); // cancel edits
return;
}
ListView_GetRects(plv, plv->iEdit, NULL, &rcLabel, NULL, NULL);
// OffsetRect(&rc, rcLabel.left + g_cxLabelMargin + g_cxBorder,
// (rcLabel.bottom + rcLabel.top - rc.bottom) / 2 + g_cyBorder);
// OffsetRect(&rc, rcLabel.left + g_cxLabelMargin , rcLabel.top);
// get the text bounding rect
if (ListView_IsIconView(plv))
{
// We should not adjust y-positoin in case of the icon view.
InflateRect(&rcLabel, -g_cxLabelMargin, -g_cyBorder);
}
else
{
// Special case for single-line & centered
InflateRect(&rcLabel, -g_cxLabelMargin - g_cxBorder, (-(rcLabel.bottom - rcLabel.top - plv->cyLabelChar) / 2) - g_cyBorder);
}
seips = 0;
if (ListView_IsIconView(plv) && !(plv->ci.style & LVS_NOLABELWRAP))
seips |= SEIPS_WRAP;
#ifdef DEBUG
if (plv->ci.style & LVS_NOSCROLL)
seips |= SEIPS_NOSCROLL;
#endif
SetEditInPlaceSize(plv->hwndEdit, &rcLabel, plv->hfontLabel, seips);
if (plv->exStyle & LVS_EX_REGIONAL)
ListView_ChangeEditRectForRegion(plv, &rcLabel);
}
// to avoid eating too much stack
void NEAR ListView_DoOnEditLabel(LV *plv, int i, LPTSTR pszInitial)
{
TCHAR szLabel[CCHLABELMAX];
LV_ITEM item;
item.mask = LVIF_TEXT;
item.iItem = i;
item.iSubItem = 0;
item.pszText = szLabel;
item.cchTextMax = ARRAYSIZE(szLabel);
ListView_OnGetItem(plv, &item);
if (!item.pszText)
return;
// Make sure the edited item has the focus.
if (plv->iFocus != i)
ListView_SetFocusSel(plv, i, TRUE, TRUE, FALSE);
// Make sure the item is fully visible
ListView_OnEnsureVisible(plv, i, FALSE); // fPartialOK == FALSE
// Must subtract one from ARRAYSIZE(szLabel) because Edit_LimitText doesn't include
// the terminating NULL
plv->hwndEdit = CreateEditInPlaceWindow(plv->ci.hwnd,
pszInitial? pszInitial : item.pszText, ARRAYSIZE(szLabel) - 1,
ListView_IsIconView(plv) ?
(WS_BORDER | WS_CLIPSIBLINGS | WS_CHILD | ES_CENTER | ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL) :
(WS_BORDER | WS_CLIPSIBLINGS | WS_CHILD | ES_LEFT | ES_AUTOHSCROLL), plv->hfontLabel);
if (plv->hwndEdit)
{
LISTITEM FAR* pitem;
LV_DISPINFO nm;
// We create the edit window but have not shown it. Ask the owner
// if they are interested or not.
// If we passed in initial text set the ID to be dirty...
if (pszInitial)
SetWindowID(plv->hwndEdit, 1);
nm.item.mask = LVIF_PARAM;
nm.item.iItem = i;
nm.item.iSubItem = 0;
if (!ListView_IsOwnerData( plv ))
{
if (!(pitem = ListView_GetItemPtr(plv, i)))
{
DestroyWindow(plv->hwndEdit);
plv->hwndEdit = NULL;
return;
}
nm.item.lParam = pitem->lParam;
}
else
nm.item.lParam = (LPARAM)0;
plv->iEdit = i;
// if they have LVS_EDITLABELS but return non-FALSE here, stop!
if ((BOOL)CCSendNotify(&plv->ci, LVN_BEGINLABELEDIT, &nm.hdr))
{
plv->iEdit = -1;
DestroyWindow(plv->hwndEdit);
plv->hwndEdit = NULL;
}
}
}
void FAR PASCAL RescrollEditWindow(HWND hwndEdit)
{
Edit_SetSel(hwndEdit, -1, -1); // move to the end
Edit_SetSel(hwndEdit, 0, -1); // select all text
}
// BUGBUG: very similar code in treeview.c
HWND NEAR ListView_OnEditLabel(LV* plv, int i, LPTSTR pszInitialText)
{
// this eats stack
ListView_DismissEdit(plv, FALSE);
if (!(plv->ci.style & LVS_EDITLABELS) || (GetFocus() != plv->ci.hwnd) ||
(i == -1))
return(NULL); // Does not support this.
ListView_DoOnEditLabel(plv, i, pszInitialText);
if (plv->hwndEdit) {
plv->pfnEditWndProc = SubclassWindow(plv->hwndEdit, ListView_EditWndProc);
#if defined(FE_IME) || !defined(WINNT)
if (g_fDBCSInputEnabled) {
if (SendMessage(plv->hwndEdit, EM_GETLIMITTEXT, (WPARAM)0, (LPARAM)0)<13)
{
plv->flags |= LVF_DONTDRAWCOMP;
}
}
#endif
ListView_SetEditSize(plv);
// Show the window and set focus to it. Do this after setting the
// size so we don't get flicker.
SetFocus(plv->hwndEdit);
ShowWindow(plv->hwndEdit, SW_SHOW);
ListView_InvalidateItem(plv, i, TRUE, RDW_INVALIDATE | RDW_ERASE);
RescrollEditWindow(plv->hwndEdit);
/* Due to a bizzare twist of fate, a certain mix of resolution / font size / icon
/ spacing results in being able to see the previous label behind the edit control
/ we have just created. Therefore to overcome this problem we ensure that this
/ label is erased.
/
/ As the label is not painted when we have an edit control we just invalidate the
/ area and the background will be painted. As the window is a child of the list view
/ we should not see any flicker within it. */
if ( ListView_IsIconView( plv ) )
{
RECT rcLabel;
ListView_GetRects( plv, i, NULL, &rcLabel, NULL, NULL );
ListView_UnfoldRects( plv, i, NULL, &rcLabel, NULL, NULL );
InvalidateRect( plv->ci.hwnd, &rcLabel, TRUE );
UpdateWindow( plv->ci.hwnd );
}
}
return plv->hwndEdit;
}
// BUGBUG: very similar code in treeview.c
BOOL NEAR ListView_DismissEdit(LV* plv, BOOL fCancel)
{
LISTITEM FAR* pitem = NULL;
BOOL fOkToContinue = TRUE;
HWND hwndEdit = plv->hwndEdit;
HWND hwnd = plv->ci.hwnd;
int iEdit;
LV_DISPINFO nm;
TCHAR szLabel[CCHLABELMAX];
#if defined(FE_IME) || !defined(WINNT)
HIMC himc;
#endif
if (plv->fNoDismissEdit)
return FALSE;
if (!hwndEdit) {
// Also make sure there are no pending edits...
ListView_CancelPendingEdit(plv);
return TRUE; // It is OK to process as normal...
}
// If the window is not visible, we are probably in the process
// of being destroyed, so assume that we are being destroyed
if (!IsWindowVisible(plv->ci.hwnd))
fCancel = TRUE;
//
// We are using the Window ID of the control as a BOOL to
// state if it is dirty or not.
switch (GetWindowID(hwndEdit)) {
case 0:
// The edit control is not dirty so act like cancel.
fCancel = TRUE;
// Fall through to set window so we will not recurse!
case 1:
// The edit control is dirty so continue.
SetWindowID(hwndEdit, 2); // Don't recurse
break;
case 2:
// We are in the process of processing an update now, bail out
return TRUE;
}
// BUGBUG: this will fail if the program deleted the items out
// from underneath us (while we are waiting for the edit timer).
// make delete item invalidate our edit item
// We uncouple the edit control and hwnd out from under this as
// to allow code that process the LVN_ENDLABELEDIT to reenter
// editing mode if an error happens.
iEdit = plv->iEdit;
do
{
if (ListView_IsOwnerData( plv ))
{
if (!((iEdit >= 0) && (iEdit < plv->cTotalItems)))
{
break;
}
nm.item.lParam = 0;
}
else
{
pitem = ListView_GetItemPtr(plv, iEdit);
ASSERT(pitem);
if (pitem == NULL)
{
break;
}
nm.item.lParam = pitem->lParam;
}
nm.item.iItem = iEdit;
nm.item.iSubItem = 0;
nm.item.cchTextMax = 0;
nm.item.mask = 0;
if (fCancel)
nm.item.pszText = NULL;
else
{
Edit_GetText(hwndEdit, szLabel, ARRAYSIZE(szLabel));
nm.item.pszText = szLabel;
nm.item.mask |= LVIF_TEXT;
nm.item.cchTextMax = ARRAYSIZE(szLabel);
}
//
// Notify the parent that we the label editing has completed.
// We will use the LV_DISPINFO structure to return the new
// label in. The parent still has the old text available by
// calling the GetItemText function.
//
fOkToContinue = (BOOL)CCSendNotify(&plv->ci, LVN_ENDLABELEDIT, &nm.hdr);
if (!IsWindow(hwnd)) {
return FALSE;
}
if (fOkToContinue && !fCancel)
{
//
// If the item has the text set as CALLBACK, we will let the
// ower know that they are supposed to set the item text in
// their own data structures. Else we will simply update the
// text in the actual view.
//
if (!ListView_IsOwnerData( plv ) &&
(pitem->pszText != LPSTR_TEXTCALLBACK))
{
// Set the item text (everything's set up in nm.item)
//
nm.item.mask = LVIF_TEXT;
ListView_OnSetItem(plv, &nm.item);
}
else
{
CCSendNotify(&plv->ci, LVN_SETDISPINFO, &nm.hdr);
// Also we will assume that our cached size is invalid...
plv->rcView.left = RECOMPUTE;
if (!ListView_IsOwnerData( plv ))
{
ListView_SetSRecompute(pitem);
}
}
}
#if defined(FE_IME) || !defined(WINNT)
if (g_fDBCSInputEnabled) {
if (LOWORD(GetKeyboardLayout(0L)) == 0x0411 && (himc = ImmGetContext(hwndEdit)))
{
ImmNotifyIME(himc, NI_COMPOSITIONSTR, CPS_COMPLETE, 0L);
ImmReleaseContext(hwndEdit, himc);
}
}
#endif
// redraw
ListView_InvalidateItem(plv, iEdit, FALSE, RDW_INVALIDATE | RDW_ERASE);
} while (FALSE);
// If the hwnedit is still us clear out the variables
if (hwndEdit == plv->hwndEdit)
{
plv->iEdit = -1;
plv->hwndEdit = NULL; // avoid being reentered
}
DestroyWindow(hwndEdit);
// We've to recalc the region because the edit in place window has
// added stuff to the region that we don't know how to remove
// safely.
ListView_RecalcRegion(plv, TRUE, TRUE);
return fOkToContinue;
}
//
// This function will scall the icon positions that are stored in the
// item structures between large and small icon view.
//
void NEAR ListView_ScaleIconPositions(LV* plv, BOOL fSmallIconView)
{
int cxItem, cyItem;
HWND hwnd;
int i;
if (fSmallIconView)
{
if (plv->flags & LVF_ICONPOSSML)
return; // Already done
}
else
{
if ((plv->flags & LVF_ICONPOSSML) == 0)
return; // dito
}
// Last but not least update our bit!
plv->flags ^= LVF_ICONPOSSML;
cxItem = plv->cxItem;
cyItem = plv->cyItem;
hwnd = plv->ci.hwnd;
// We will now loop through all of the items and update their coordinats
// We will update th position directly into the view instead of calling
// SetItemPosition as to not do 5000 invalidates and messages...
if (!ListView_IsOwnerData( plv ))
{
for (i = 0; i < ListView_Count(plv); i++)
{
LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, i);
if (pitem->pt.y != RECOMPUTE) {
if (fSmallIconView)
{
pitem->pt.x = MulDiv(pitem->pt.x - g_cxIconOffset, cxItem, lv_cxIconSpacing);
pitem->pt.y = MulDiv(pitem->pt.y - g_cyIconOffset, cyItem, lv_cyIconSpacing);
}
else
{
pitem->pt.x = MulDiv(pitem->pt.x, lv_cxIconSpacing, cxItem) + g_cxIconOffset;
pitem->pt.y = MulDiv(pitem->pt.y, lv_cyIconSpacing, cyItem) + g_cyIconOffset;
}
}
}
plv->iFreeSlot = -1; // The "free slot" cache is no good once an item moves
if (plv->ci.style & LVS_AUTOARRANGE)
{
ListView_ISetColumnWidth(plv, 0,
LV_GetNewColWidth(plv, 0, ListView_Count(plv)-1), FALSE);
// If autoarrange is turned on, the arrange function will do
// everything that is needed.
ListView_OnArrange(plv, LVA_DEFAULT);
return;
}
}
plv->rcView.left = RECOMPUTE;
//
// Also scale the origin
//
if (fSmallIconView)
{
plv->ptOrigin.x = MulDiv(plv->ptOrigin.x, cxItem, lv_cxIconSpacing);
plv->ptOrigin.y = MulDiv(plv->ptOrigin.y, cyItem, lv_cyIconSpacing);
}
else
{
plv->ptOrigin.x = MulDiv(plv->ptOrigin.x, lv_cxIconSpacing, cxItem);
plv->ptOrigin.y = MulDiv(plv->ptOrigin.y, lv_cyIconSpacing, cyItem);
}
// Make sure it fully redraws correctly
RedrawWindow(plv->ci.hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE);
}
HWND FAR PASCAL CreateEditInPlaceWindow(HWND hwnd, LPCTSTR lpText, int cbText, LONG style, HFONT hFont)
{
HWND hwndEdit;
// Create the window with some nonzero size so margins work properly
// The caller will do a SetEditInPlaceSize to set the real size
// But make sure the width is huge so when an app calls SetWindowText,
// USER won't try to scroll the window.
hwndEdit = CreateWindowEx(GetWindowLong(hwnd, GWL_EXSTYLE) & WS_EX_RTLREADING,
TEXT("EDIT"), lpText, style,
0, 0, 16384, 20, hwnd, NULL, HINST_THISDLL, NULL);
if (hwndEdit) {
Edit_LimitText(hwndEdit, cbText);
Edit_SetSel(hwndEdit, 0, 0); // move to the beginning
FORWARD_WM_SETFONT(hwndEdit, hFont, FALSE, SendMessage);
}
return hwndEdit;
}
// BUGBUG: very similar routine in treeview
// in:
// hwndEdit edit control to position in client coords of parent window
// prc bonding rect of the text, used to position everthing
// hFont font being used
// flags
// SEIPS_WRAP if this is a wrapped type (multiline) edit
// SEIPS_NOSCROLL if the parent control does not have scrollbars
//
// The SEIPS_NOSCROLL flag is used only in DEBUG. Normally, the item
// being edited should have been scrolled into view, but if the parent
// doesn't have scrollbars, then clearly that's not possible, so we
// shouldn't ASSERT in that case.
//
// Notes:
// The top-left corner of the bouding rectangle must be the position
// the client uses to draw text. We adjust the edit field rectangle
// appropriately.
//
void FAR PASCAL SetEditInPlaceSize(HWND hwndEdit, RECT FAR *prc, HFONT hFont, UINT seips)
{
RECT rc, rcClient, rcFormat;
TCHAR szLabel[CCHLABELMAX + 1];
int cchLabel, cxIconTextWidth;
HDC hdc;
HWND hwndParent = GetParent(hwndEdit);
UINT flags;
// was #ifdef DBCS
// short wRightMgn;
// #endif
cchLabel = Edit_GetText(hwndEdit, szLabel, ARRAYSIZE(szLabel));
if (szLabel[0] == 0)
{
lstrcpy(szLabel, c_szSpace);
cchLabel = 1;
}
hdc = GetDC(hwndParent);
#ifdef DEBUG
//DrawFocusRect(hdc, prc); // this is the rect they are passing in
#endif
SelectFont(hdc, hFont);
cxIconTextWidth = g_cxIconSpacing - g_cxLabelMargin * 2;
rc.left = rc.top = rc.bottom = 0;
rc.right = cxIconTextWidth; // for DT_LVWRAP
// REVIEW: we might want to include DT_EDITCONTROL in our DT_LVWRAP
if (seips & SEIPS_WRAP)
{
flags = DT_LVWRAP | DT_CALCRECT;
// We only use DT_NOFULLWIDTHCHARBREAK on Korean(949) Memphis and NT5
if (949 == g_uiACP && (g_bRunOnNT5 || g_bRunOnMemphis))
flags |= DT_NOFULLWIDTHCHARBREAK;
}
else
flags = DT_LV | DT_CALCRECT;
// If the string is NULL display a rectangle that is visible.
DrawText(hdc, szLabel, cchLabel, &rc, flags);
// Minimum text box size is 1/4 icon spacing size
if (rc.right < g_cxIconSpacing / 4)
rc.right = g_cxIconSpacing / 4;
// position the text rect based on the text rect passed in
// if wrapping, center the edit control around the text mid point
OffsetRect(&rc,
(seips & SEIPS_WRAP) ? prc->left + ((prc->right - prc->left) - (rc.right - rc.left)) / 2 : prc->left,
(seips & SEIPS_WRAP) ? prc->top : prc->top + ((prc->bottom - prc->top) - (rc.bottom - rc.top)) / 2 );
// give a little space to ease the editing of this thing
if (!(seips & SEIPS_WRAP))
rc.right += g_cxLabelMargin * 4;
rc.right += g_cyEdge; // try to leave a little more for dual blanks
#ifdef DEBUG
//DrawFocusRect(hdc, &rc);
#endif
ReleaseDC(hwndParent, hdc);
//
// #5688: We need to make it sure that the whole edit window is
// always visible. We should not extend it to the outside of
// the parent window.
//
{
BOOL fSuccess;
GetClientRect(hwndParent, &rcClient);
fSuccess = IntersectRect(&rc, &rc, &rcClient);
ASSERT(fSuccess || IsRectEmpty(&rcClient) || (seips & SEIPS_NOSCROLL));
}
//
// Inflate it after the clipping, because it's ok to hide border.
//
// EM_GETRECT already takes EM_GETMARGINS into account, so don't use both.
SendMessage(hwndEdit, EM_GETRECT, 0, (LPARAM)(LPRECT)&rcFormat);
// Turn the margins inside-out so we can AdjustWindowRect on them.
rcFormat.top = -rcFormat.top;
rcFormat.left = -rcFormat.left;
AdjustWindowRectEx(&rcFormat, GetWindowStyle(hwndEdit), FALSE,
GetWindowExStyle(hwndEdit));
InflateRect(&rc, -rcFormat.left, -rcFormat.top);
HideCaret(hwndEdit);
SetWindowPos(hwndEdit, NULL, rc.left, rc.top,
rc.right - rc.left, rc.bottom - rc.top, SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS);
CopyRect(prc, (CONST RECT *)&rc);
#ifndef UNIX
InvalidateRect(hwndEdit, NULL, TRUE);
#endif
ShowCaret(hwndEdit);
}
// draw three pixel wide border for border selection.
void NEAR PASCAL ListView_DrawBorderSel(HIMAGELIST himl, HWND hwnd, HDC hdc, int x,int y, COLORREF clr)
{
int dx, dy;
RECT rc;
COLORREF clrSave = SetBkColor(hdc, clr);
ImageList_GetIconSize(himl, &dx, &dy);
//left
rc.left = x - 4; // 1 pixel seperation + 3 pixel width.
rc.top = y - 4;
rc.right = x - 1;
rc.bottom = y + dy + 4;
ExtTextOut(hdc,0,0,ETO_OPAQUE,&rc,NULL,0,NULL);
//top
rc.left = rc.right;
rc.right = rc.left + dx + 2;
rc.bottom = rc.top + 3;
ExtTextOut(hdc,0,0,ETO_OPAQUE,&rc,NULL,0,NULL);
//right
rc.left = rc.right;
rc.right = rc.left + 3;
rc.bottom = rc.top + dy + 8; // 2*3 pixel borders + 2*1 pixel seperation = 8
ExtTextOut(hdc,0,0,ETO_OPAQUE,&rc,NULL,0,NULL);
// bottom
rc.top = rc.bottom - 3;
rc.right = rc.left;
rc.left = rc.right - dx - 2;
ExtTextOut(hdc,0,0,ETO_OPAQUE,&rc,NULL,0,NULL);
SetBkColor(hdc, clrSave);
return;
}
//
// If xMax >= 0, then the image will not be drawn past the x-coordinate
// specified by xMax. This is used only during report view drawing, where
// we have to clip against our column width.
//
UINT NEAR PASCAL ListView_DrawImageEx(LV* plv, LV_ITEM FAR* pitem, HDC hdc, int x, int y, UINT fDraw, int xMax)
{
UINT fText = SHDT_DESELECTED;
UINT fImage = ILD_NORMAL;
COLORREF clr = 0;
HIMAGELIST himl;
BOOL fBorderSel = (plv->exStyle & LVS_EX_BORDERSELECT);
int cxIcon;
fImage = (pitem->state & LVIS_OVERLAYMASK);
fText = SHDT_DESELECTED;
if (ListView_IsIconView(plv)) {
himl = plv->himl;
cxIcon = plv->cxIcon;
} else {
himl = plv->himlSmall;
cxIcon = plv->cxSmIcon;
}
// the item can have one of 4 states, for 3 looks:
// normal simple drawing
// selected, no focus light image highlight, no text hi
// selected w/ focus highlight image & text
// drop highlighting highlight image & text
if ((pitem->state & LVIS_DROPHILITED) ||
((fDraw & LVDI_SELECTED) && (pitem->state & LVIS_SELECTED)))
{
fText = SHDT_SELECTED;
if (!fBorderSel) // do not effect color of icon on borderselect.
{
fImage |= ILD_BLEND50;
clr = CLR_HILIGHT;
}
}
if ((fDraw & LVDI_SELECTNOFOCUS) && (pitem->state & LVIS_SELECTED)) {
fText = SHDT_SELECTNOFOCUS;
//fImage |= ILD_BLEND50;
//clr = GetSysColor(COLOR_3DFACE);
}
if (pitem->state & LVIS_CUT)
{
fImage |= ILD_BLEND50;
clr = plv->clrBk;
}
#if 0 // dont do a selected but dont have the focus vis.
else if (item.state & LVIS_SELECTED)
{
fImage |= ILD_BLEND25;
clr = CLR_HILIGHT;
}
#endif
if (!(fDraw & LVDI_NOIMAGE))
{
if (himl) {
COLORREF clrBk;
if (plv->pImgCtx || ((plv->exStyle & LVS_EX_REGIONAL) && !g_fSlowMachine))
clrBk = CLR_NONE;
else
clrBk = plv->clrBk;
if (xMax >= 0)
cxIcon = min(cxIcon, xMax - x);
if (cxIcon > 0)
ImageList_DrawEx(himl, pitem->iImage, hdc, x, y, cxIcon, 0, clrBk, clr, fImage);
}
if (plv->himlState) {
if (LV_StateImageValue(pitem) &&
(pitem->iSubItem == 0 ||
plv->exStyle & LVS_EX_SUBITEMIMAGES)
) {
int iState = LV_StateImageIndex(pitem);
int dyImage =
(himl) ?
( (ListView_IsIconView(plv) ? plv->cyIcon : plv->cySmIcon) - plv->cyState)
: 0;
int xDraw = x-plv->cxState;
cxIcon = plv->cxState;
if (xMax >= 0)
cxIcon = min(cxIcon, xMax - xDraw);
if (cxIcon > 0)
ImageList_DrawEx(plv->himlState, iState, hdc,
xDraw,
y + dyImage,
cxIcon,
0,
CLR_DEFAULT,
CLR_DEFAULT,
ILD_NORMAL);
}
}
// draw the border selection if appropriate.
if (fBorderSel && !(fText & SHDT_DESELECTED)) // selected, draw the selection rect.
{
COLORREF clrBorder = (fDraw & LVDI_HOTSELECTED)
? GetSysColor(COLOR_HOTLIGHT) : g_clrHighlight;
ListView_DrawBorderSel(himl, plv->ci.hwnd, hdc, x, y, clrBorder);
}
else if (fBorderSel && (fText & SHDT_DESELECTED)) // erase possible selection rect.
ListView_DrawBorderSel(himl, plv->ci.hwnd, hdc, x, y, plv->clrBk);
}
return fText;
}
#if defined(FE_IME) || !defined(WINNT)
void NEAR PASCAL ListView_SizeIME(HWND hwnd)
{
HIMC himc;
#ifdef _WIN32
CANDIDATEFORM candf;
#else
CANDIDATEFORM16 candf;
#endif
RECT rc;
// If this subclass procedure is being called with WM_SIZE,
// This routine sets the rectangle to an IME.
GetClientRect(hwnd, &rc);
// Candidate stuff
candf.dwIndex = 0; // Bogus assumption for Japanese IME.
candf.dwStyle = CFS_EXCLUDE;
candf.ptCurrentPos.x = rc.left;
candf.ptCurrentPos.y = rc.bottom;
candf.rcArea = rc;
if (himc=ImmGetContext(hwnd))
{
ImmSetCandidateWindow(himc, &candf);
ImmReleaseContext(hwnd, himc);
}
}
#ifndef UNICODE
LPSTR NEAR PASCAL DoDBCSBoundary(LPTSTR lpsz, int FAR *lpcchMax)
{
int i = 0;
while (i < *lpcchMax && *lpsz)
{
i++;
if (IsDBCSLeadByte(*lpsz))
{
if (i >= *lpcchMax)
{
--i; // Wrap up without the last leadbyte.
break;
}
i++;
lpsz+= 2;
}
else
lpsz++;
}
*lpcchMax = i;
return lpsz;
}
#endif
void NEAR PASCAL DrawCompositionLine(HWND hwnd, HDC hdc, HFONT hfont, LPTSTR lpszComp, LPBYTE lpszAttr, int ichCompStart, int ichCompEnd, int ichStart)
{
PTSTR pszCompStr;
int ichSt,ichEnd;
DWORD dwPos;
BYTE bAttr;
HFONT hfontOld;
int fnPen;
HPEN hPen;
COLORREF crDrawText;
COLORREF crDrawBack;
COLORREF crOldText;
COLORREF crOldBk;
while (ichCompStart < ichCompEnd)
{
// Get the fragment to draw
//
// ichCompStart,ichCompEnd -- index at Edit Control
// ichSt,ichEnd -- index at lpszComp
ichEnd = ichSt = ichCompStart - ichStart;
bAttr = lpszAttr[ichSt];
while (ichEnd < ichCompEnd - ichStart)
{
if (bAttr == lpszAttr[ichEnd])
ichEnd++;
else
break;
}
pszCompStr = (PTSTR)LocalAlloc(LPTR, sizeof(TCHAR)*(ichEnd - ichSt + 1 + 1) ); // 1 for NULL.
if (pszCompStr)
{
lstrcpyn(pszCompStr, &lpszComp[ichSt], ichEnd-ichSt+1);
pszCompStr[ichEnd-ichSt] = '\0';
}
// Attribute stuff
switch (bAttr)
{
case ATTR_INPUT:
fnPen = PS_DOT;
crDrawText = g_clrWindowText;
crDrawBack = g_clrWindow;
break;
case ATTR_TARGET_CONVERTED:
case ATTR_TARGET_NOTCONVERTED:
fnPen = PS_DOT;
crDrawText = g_clrHighlightText;
crDrawBack = g_clrHighlight;
break;
case ATTR_CONVERTED:
fnPen = PS_SOLID;
crDrawText = g_clrWindowText;
crDrawBack = g_clrWindow;
break;
}
crOldText = SetTextColor(hdc, crDrawText);
crOldBk = SetBkColor(hdc, crDrawBack);
hfontOld= SelectObject(hdc, hfont);
// Get the start position of composition
//
dwPos = (DWORD) SendMessage(hwnd, EM_POSFROMCHAR, ichCompStart, 0);
// Draw it.
TextOut(hdc, GET_X_LPARAM(dwPos), GET_Y_LPARAM(dwPos), pszCompStr, ichEnd-ichSt);
#ifndef DONT_UNDERLINE
// Underline
hPen = CreatePen(fnPen, 1, crDrawText);
if( hPen ) {
HPEN hpenOld = SelectObject( hdc, hPen );
int iOldBk = SetBkMode( hdc, TRANSPARENT );
SIZE size;
GetTextExtentPoint(hdc, pszCompStr, ichEnd-ichSt, &size);
MoveToEx( hdc, GET_X_LPARAM(dwPos), size.cy + GET_Y_LPARAM(dwPos)-1, NULL);
LineTo( hdc, size.cx + GET_X_LPARAM(dwPos), size.cy + GET_Y_LPARAM(dwPos)-1 );
SetBkMode( hdc, iOldBk );
if( hpenOld ) SelectObject( hdc, hpenOld );
DeleteObject( hPen );
}
#endif
if (hfontOld)
SelectObject(hdc, hfontOld);
SetTextColor(hdc, crOldText);
SetBkColor(hdc, crOldBk);
LocalFree((HLOCAL)pszCompStr);
//Next fragment
//
ichCompStart += ichEnd-ichSt;
}
}
void NEAR PASCAL ListView_InsertComposition(HWND hwnd, WPARAM wParam, LPARAM lParam, LV *plv)
{
PSTR pszCompStr;
int cbComp = 0;
int cbCompNew;
int cchMax;
int cchText;
DWORD dwSel;
HIMC himc = (HIMC)0;
// To prevent recursion..
if (plv->flags & LVF_INSERTINGCOMP)
{
return;
}
plv->flags |= LVF_INSERTINGCOMP;
// Don't want to redraw edit during inserting.
//
SendMessage(hwnd, WM_SETREDRAW, (WPARAM)FALSE, 0);
// If we have RESULT STR, put it to EC first.
if (himc = ImmGetContext(hwnd))
{
#ifdef WIN32
if (!(dwSel = PtrToUlong(GetProp(hwnd, szIMECompPos))))
dwSel = Edit_GetSel(hwnd);
// Becaues we don't setsel after inserting composition
// in win32 case.
Edit_SetSel(hwnd, GET_X_LPARAM(dwSel), GET_Y_LPARAM(dwSel));
#endif
if (lParam&GCS_RESULTSTR)
{
// ImmGetCompositionString() returns length of buffer in bytes,
// not in # of character
cbComp = (int)ImmGetCompositionString(himc, GCS_RESULTSTR, NULL, 0);
pszCompStr = (PSTR)LocalAlloc(LPTR, cbComp + sizeof(TCHAR));
if (pszCompStr)
{
ImmGetCompositionString(himc, GCS_RESULTSTR, (PSTR)pszCompStr, cbComp+sizeof(TCHAR));
// With ImmGetCompositionStringW, cbComp is # of bytes copied
// character position must be calculated by cbComp / sizeof(TCHAR)
//
*(TCHAR *)(&pszCompStr[cbComp]) = TEXT('\0');
Edit_ReplaceSel(hwnd, (LPTSTR)pszCompStr);
LocalFree((HLOCAL)pszCompStr);
}
#ifdef WIN32
// There's no longer selection
//
RemoveProp(hwnd, szIMECompPos);
// Get current cursor pos so that the subsequent composition
// handling will do the right thing.
//
dwSel = Edit_GetSel(hwnd);
#endif
}
if (lParam & GCS_COMPSTR)
{
// ImmGetCompositionString() returns length of buffer in bytes,
// not in # of character
//
cbComp = (int)ImmGetCompositionString(himc, GCS_COMPSTR, NULL, 0);
pszCompStr = (PSTR)LocalAlloc(LPTR, cbComp + sizeof(TCHAR));
if (pszCompStr)
{
ImmGetCompositionString(himc, GCS_COMPSTR, pszCompStr, cbComp+sizeof(TCHAR));
// Get position of the current selection
//
#ifndef WIN32
dwSel = Edit_GetSel(hwnd);
#endif
cchMax = (int)SendMessage(hwnd, EM_GETLIMITTEXT, 0, 0);
cchText = Edit_GetTextLength(hwnd);
// Cut the composition string if it exceeds limit.
//
cbCompNew = min((UINT)cbComp,
sizeof(TCHAR)*(cchMax-(cchText-(HIWORD(dwSel)-LOWORD(dwSel)))));
// wrap up the DBCS at the end of string
//
if (cbCompNew < cbComp)
{
#ifndef UNICODE
DoDBCSBoundary((LPSTR)pszCompStr, (int FAR *)&cbCompNew);
#endif
*(TCHAR *)(&pszCompStr[cbCompNew]) = TEXT('\0');
// Reset composition string if we cut it.
ImmSetCompositionString(himc, SCS_SETSTR, pszCompStr, cbCompNew, NULL, 0);
cbComp = cbCompNew;
}
*(TCHAR *)(&pszCompStr[cbComp]) = TEXT('\0');
// Replace the current selection with composition string.
//
Edit_ReplaceSel(hwnd, (LPTSTR)pszCompStr);
LocalFree((HLOCAL)pszCompStr);
}
// Mark the composition string so that we can replace it again
// for the next time.
//
#ifdef WIN32
// Don't setsel to avoid flicking
if (cbComp)
{
dwSel = MAKELONG(LOWORD(dwSel),LOWORD(dwSel)+cbComp/sizeof(TCHAR));
SetProp(hwnd, szIMECompPos, IntToPtr(dwSel));
}
else
RemoveProp(hwnd, szIMECompPos);
#else
// Still use SETSEL for 16bit.
if (cbComp)
Edit_SetSel(hwnd, LOWORD(dwSel), LOWORD(dwSel)+cbComp);
#endif
}
ImmReleaseContext(hwnd, himc);
}
SendMessage(hwnd, WM_SETREDRAW, (WPARAM)TRUE, 0);
//
// We want to update the size of label edit just once at
// each WM_IME_COMPOSITION processing. ReplaceSel causes several EN_UPDATE
// and it causes ugly flicking too.
//
RedrawWindow(hwnd, NULL, NULL, RDW_INTERNALPAINT|RDW_INVALIDATE);
SetWindowID(plv->hwndEdit, 1);
ListView_SetEditSize(plv);
plv->flags &= ~LVF_INSERTINGCOMP;
}
void NEAR PASCAL ListView_PaintComposition(HWND hwnd, LV * plv)
{
BYTE szCompStr[CCHLABELMAX + 1];
BYTE szCompAttr[CCHLABELMAX + 1];
int cchLine, ichLineStart;
int cbComp = 0;
int cchComp;
int nLine;
int ichCompStart, ichCompEnd;
DWORD dwSel;
int cchMax, cchText;
HIMC himc = (HIMC)0;
HDC hdc;
if (plv->flags & LVF_INSERTINGCOMP)
{
// This is the case that ImmSetCompositionString() generates
// WM_IME_COMPOSITION. We're not ready to paint composition here.
return;
}
if (himc = ImmGetContext(hwnd))
{
cbComp=(UINT)ImmGetCompositionString(himc, GCS_COMPSTR, szCompStr, sizeof(szCompStr));
ImmGetCompositionString(himc, GCS_COMPATTR, szCompAttr, sizeof(szCompStr));
ImmReleaseContext(hwnd, himc);
}
if (cbComp)
{
// Get the position of current selection
//
#ifdef WIN32
if (!(dwSel = PtrToUlong(GetProp(hwnd, szIMECompPos))))
dwSel = 0L;
#else
dwSel = Edit_GetSel(hwnd);
#endif
cchMax = (int)SendMessage(hwnd, EM_GETLIMITTEXT, 0, 0);
cchText = Edit_GetTextLength(hwnd);
cbComp = min((UINT)cbComp, sizeof(TCHAR)*(cchMax-(cchText-(HIWORD(dwSel)-LOWORD(dwSel)))));
#ifndef UNICODE
DoDBCSBoundary((LPTSTR)szCompStr, (int FAR *)&cbComp);
#endif
*(TCHAR *)(&szCompStr[cbComp]) = TEXT('\0');
/////////////////////////////////////////////////
// //
// Draw composition string over the sel string.//
// //
/////////////////////////////////////////////////
hdc = GetDC(hwnd);
ichCompStart = LOWORD(dwSel);
cchComp = cbComp/sizeof(TCHAR);
while (ichCompStart < (int)LOWORD(dwSel) + cchComp)
{
// Get line from each start pos.
//
nLine = Edit_LineFromChar(hwnd, ichCompStart);
ichLineStart = Edit_LineIndex(hwnd, nLine);
cchLine= Edit_LineLength(hwnd, ichLineStart);
// See if composition string is longer than this line.
//
if(ichLineStart+cchLine > (int)LOWORD(dwSel)+cchComp)
ichCompEnd = LOWORD(dwSel)+cchComp;
else
{
// Yes, the composition string is longer.
// Take the begining of the next line as next start.
//
if (ichLineStart+cchLine > ichCompStart)
ichCompEnd = ichLineStart+cchLine;
else
{
// If the starting position is not proceeding,
// let's get out of here.
break;
}
}
// Draw the line
//
DrawCompositionLine(hwnd, hdc, plv->hfontLabel, (LPTSTR)szCompStr, szCompAttr, ichCompStart, ichCompEnd, LOWORD(dwSel));
ichCompStart = ichCompEnd;
}
ReleaseDC(hwnd, hdc);
// We don't want to repaint the window.
ValidateRect(hwnd, NULL);
}
}
#endif FE_IME
Reference in a new issue Copy permalink