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comctl32: Implement highlighting (marquee) selection support in listview.

This commit is contained in:
Owen Rudge 2009-09-30 16:41:23 +01:00 committed by Alexandre Julliard
parent cc4a6693f1
commit 69b76a18fb
1 changed files with 119 additions and 14 deletions
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133
dlls/comctl32/listview.c
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@ -7,6 +7,7 @@
* Copyright 2001 CodeWeavers Inc.
* Copyright 2002 Dimitrie O. Paun
* Copyright 2009 Nikolay Sivov
* Copyright 2009 Owen Rudge for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -98,7 +99,6 @@
* -- LVN_BEGINSCROLL, LVN_ENDSCROLL
* -- LVN_GETINFOTIP
* -- LVN_HOTTRACK
* -- LVN_MARQUEEBEGIN
* -- LVN_SETDISPINFO
* -- NM_HOVER
* -- LVN_BEGINRDRAG
@ -248,6 +248,8 @@ typedef struct tagLISTVIEW_INFO
BOOL bLButtonDown;
BOOL bRButtonDown;
BOOL bDragging;
BOOL bMarqueeSelect; /* marquee selection/highlight underway */
RECT marqueeRect;
POINT ptClickPos; /* point where the user clicked */
BOOL bNoItemMetrics; /* flags if item metrics are not yet computed */
INT nItemHeight;
@ -3605,17 +3607,94 @@ static LRESULT LISTVIEW_MouseMove(LISTVIEW_INFO *infoPtr, WORD fwKeys, INT x, IN
WORD wDragWidth = GetSystemMetrics(SM_CXDRAG);
WORD wDragHeight= GetSystemMetrics(SM_CYDRAG);
rect.left = infoPtr->ptClickPos.x - wDragWidth;
rect.right = infoPtr->ptClickPos.x + wDragWidth;
rect.top = infoPtr->ptClickPos.y - wDragHeight;
rect.bottom = infoPtr->ptClickPos.y + wDragHeight;
tmp.x = x;
tmp.y = y;
lvHitTestInfo.pt = tmp;
LISTVIEW_HitTest(infoPtr, &lvHitTestInfo, TRUE, TRUE);
if (infoPtr->bMarqueeSelect)
{
LVITEMW item;
ITERATOR i;
if (x > infoPtr->ptClickPos.x)
{
rect.left = infoPtr->ptClickPos.x;
rect.right = x;
}
else
{
rect.left = x;
rect.right = infoPtr->ptClickPos.x;
}
if (y > infoPtr->ptClickPos.y)
{
rect.top = infoPtr->ptClickPos.y;
rect.bottom = y;
}
else
{
rect.top = y;
rect.bottom = infoPtr->ptClickPos.y;
}
/* Cancel out the old marquee rectangle and draw the new one */
LISTVIEW_InvalidateRect(infoPtr, &infoPtr->marqueeRect);
/* Invert the items in the old marquee rectangle */
iterator_frameditems(&i, infoPtr, &infoPtr->marqueeRect);
while (iterator_next(&i))
{
if (i.nItem > -1)
{
if (LISTVIEW_GetItemState(infoPtr, i.nItem, LVIS_SELECTED) == LVIS_SELECTED)
item.state = 0;
else
item.state = LVIS_SELECTED;
item.stateMask = LVIS_SELECTED;
LISTVIEW_SetItemState(infoPtr, i.nItem, &item);
}
}
iterator_destroy(&i);
CopyRect(&infoPtr->marqueeRect, &rect);
/* Iterate over the items within our marquee rectangle */
iterator_frameditems(&i, infoPtr, &rect);
while (iterator_next(&i))
{
if (i.nItem > -1)
{
/* If CTRL is pressed, invert. If not, always select the item. */
if ((fwKeys & MK_CONTROL) && (LISTVIEW_GetItemState(infoPtr, i.nItem, LVIS_SELECTED)))
item.state = 0;
else
item.state = LVIS_SELECTED;
item.stateMask = LVIS_SELECTED;
LISTVIEW_SetItemState(infoPtr, i.nItem, &item);
}
}
iterator_destroy(&i);
LISTVIEW_InvalidateRect(infoPtr, &rect);
return 0;
}
rect.left = infoPtr->ptClickPos.x - wDragWidth;
rect.right = infoPtr->ptClickPos.x + wDragWidth;
rect.top = infoPtr->ptClickPos.y - wDragHeight;
rect.bottom = infoPtr->ptClickPos.y + wDragHeight;
/* reset item marker */
if (infoPtr->nLButtonDownItem != lvHitTestInfo.iItem)
infoPtr->nLButtonDownItem = -1;
@ -3640,17 +3719,31 @@ static LRESULT LISTVIEW_MouseMove(LISTVIEW_INFO *infoPtr, WORD fwKeys, INT x, IN
if (!infoPtr->bDragging)
{
NMLISTVIEW nmlv;
lvHitTestInfo.pt = infoPtr->ptClickPos;
LISTVIEW_HitTest(infoPtr, &lvHitTestInfo, TRUE, TRUE);
ZeroMemory(&nmlv, sizeof(nmlv));
nmlv.iItem = lvHitTestInfo.iItem;
nmlv.ptAction = infoPtr->ptClickPos;
/* If the click is outside the range of an item, begin a
highlight. If not, begin an item drag. */
if (lvHitTestInfo.iItem == -1)
{
NMHDR hdr;
notify_listview(infoPtr, LVN_BEGINDRAG, &nmlv);
infoPtr->bDragging = TRUE;
/* If we're allowing multiple selections, send notification.
If return value is non-zero, cancel. */
if (!(infoPtr->dwStyle & LVS_SINGLESEL) && (notify_hdr(infoPtr, LVN_MARQUEEBEGIN, &hdr) == 0))
infoPtr->bMarqueeSelect = TRUE;
}
else
{
NMLISTVIEW nmlv;
ZeroMemory(&nmlv, sizeof(nmlv));
nmlv.iItem = lvHitTestInfo.iItem;
nmlv.ptAction = infoPtr->ptClickPos;
notify_listview(infoPtr, LVN_BEGINDRAG, &nmlv);
infoPtr->bDragging = TRUE;
}
}
return 0;
@ -4643,6 +4736,10 @@ enddraw:
if ((infoPtr->uView == LV_VIEW_DETAILS) && infoPtr->dwLvExStyle & LVS_EX_GRIDLINES)
LISTVIEW_RefreshReportGrid(infoPtr, hdc);
/* Draw marquee rectangle if appropriate */
if (infoPtr->bMarqueeSelect)
DrawFocusRect(hdc, &infoPtr->marqueeRect);
if (cdmode & CDRF_NOTIFYPOSTPAINT)
notify_postpaint(infoPtr, &nmlvcd);
@ -9312,6 +9409,7 @@ static LRESULT LISTVIEW_LButtonDown(LISTVIEW_INFO *infoPtr, WORD wKey, INT x, IN
infoPtr->bLButtonDown = TRUE;
infoPtr->ptClickPos = pt;
infoPtr->bDragging = FALSE;
infoPtr->bMarqueeSelect = FALSE;
lvHitTestInfo.pt.x = x;
lvHitTestInfo.pt.y = y;
@ -9433,9 +9531,16 @@ static LRESULT LISTVIEW_LButtonUp(LISTVIEW_INFO *infoPtr, WORD wKey, INT x, INT
LISTVIEW_SetSelection(infoPtr, infoPtr->nLButtonDownItem);
infoPtr->nLButtonDownItem = -1;
if (infoPtr->bDragging)
if (infoPtr->bDragging || infoPtr->bMarqueeSelect)
{
/* Remove the marquee rectangle */
if (infoPtr->bMarqueeSelect)
LISTVIEW_InvalidateRect(infoPtr, &infoPtr->marqueeRect);
SetRect(&infoPtr->marqueeRect, 0, 0, 0, 0);
infoPtr->bDragging = FALSE;
infoPtr->bMarqueeSelect = FALSE;
return 0;
}