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comctl32: Add support for scrolling during marquee selection.

This commit is contained in:
Owen Rudge 2009-11-02 10:58:26 -06:00 committed by Alexandre Julliard
parent c1877a2d50
commit e1f3edef3e
1 changed files with 118 additions and 0 deletions
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118
dlls/comctl32/listview.c
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@ -249,6 +249,7 @@ typedef struct tagLISTVIEW_INFO
BOOL bRButtonDown;
BOOL bDragging;
BOOL bMarqueeSelect; /* marquee selection/highlight underway */
BOOL bScrolling;
RECT marqueeRect; /* absolute coordinates of marquee selection */
RECT marqueeDrawRect; /* relative coordinates for drawing marquee */
POINT marqueeOrigin; /* absolute coordinates of marquee click origin */
@ -434,6 +435,7 @@ static HWND CreateEditLabelT(LISTVIEW_INFO *, LPCWSTR, DWORD, BOOL);
static HIMAGELIST LISTVIEW_SetImageList(LISTVIEW_INFO *, INT, HIMAGELIST);
static INT LISTVIEW_HitTest(const LISTVIEW_INFO *, LPLVHITTESTINFO, BOOL, BOOL);
static BOOL LISTVIEW_EndEditLabelT(LISTVIEW_INFO *, BOOL, BOOL);
static BOOL LISTVIEW_Scroll(LISTVIEW_INFO *, INT, INT);
/******** Text handling functions *************************************/
@ -3595,6 +3597,11 @@ static LRESULT LISTVIEW_MouseHover(LISTVIEW_INFO *infoPtr, WORD fwKeys, INT x, I
return 0;
}
#define SCROLL_LEFT 0x1
#define SCROLL_RIGHT 0x2
#define SCROLL_UP 0x4
#define SCROLL_DOWN 0x8
/***
* DESCRIPTION:
* Utility routine to draw and highlight items within a marquee selection rectangle.
@ -3641,6 +3648,21 @@ static void LISTVIEW_MarqueeHighlight(LISTVIEW_INFO *infoPtr, LPPOINT coords_ori
/* Cancel out the old marquee rectangle and draw the new one */
LISTVIEW_InvalidateRect(infoPtr, &infoPtr->marqueeDrawRect);
/* Scroll by the appropriate distance if applicable - speed up scrolling as
the cursor is further away */
if ((scroll & SCROLL_LEFT) && (coords_orig->x <= 0))
LISTVIEW_Scroll(infoPtr, coords_orig->x, 0);
if ((scroll & SCROLL_RIGHT) && (coords_orig->x >= infoPtr->rcList.right))
LISTVIEW_Scroll(infoPtr, (coords_orig->x - infoPtr->rcList.right), 0);
if ((scroll & SCROLL_UP) && (coords_orig->y <= 0))
LISTVIEW_Scroll(infoPtr, 0, coords_orig->y);
if ((scroll & SCROLL_DOWN) && (coords_orig->y >= infoPtr->rcList.bottom))
LISTVIEW_Scroll(infoPtr, 0, (coords_orig->y - infoPtr->rcList.bottom));
/* Invert the items in the old marquee rectangle */
iterator_frameditems_absolute(&i, infoPtr, &infoPtr->marqueeRect);
@ -3692,6 +3714,80 @@ static void LISTVIEW_MarqueeHighlight(LISTVIEW_INFO *infoPtr, LPPOINT coords_ori
LISTVIEW_InvalidateRect(infoPtr, &rect);
}
/***
* DESCRIPTION:
* Called when we are in a marquee selection that involves scrolling the listview (ie,
* the cursor is outside the bounds of the client area). This is a TIMERPROC.
*
* PARAMETER(S):
* [I] hwnd : Handle to the listview
* [I] uMsg : WM_TIMER (ignored)
* [I] idEvent : The timer ID interpreted as a pointer to a LISTVIEW_INFO struct
* [I] dwTimer : The elapsed time (ignored)
*
* RETURN:
* None.
*/
static VOID CALLBACK LISTVIEW_ScrollTimer(HWND hWnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime)
{
LISTVIEW_INFO *infoPtr;
SCROLLINFO scrollInfo;
POINT coords_orig;
POINT coords_offs;
POINT offset;
INT scroll = 0;
infoPtr = (LISTVIEW_INFO *) idEvent;
if (!infoPtr)
return;
/* Get the current cursor position and convert to client coordinates */
GetCursorPos(&coords_orig);
ScreenToClient(hWnd, &coords_orig);
/* Ensure coordinates are within client bounds */
coords_offs.x = max(min(coords_orig.x, infoPtr->rcList.right), 0);
coords_offs.y = max(min(coords_orig.y, infoPtr->rcList.bottom), 0);
/* Get offset */
LISTVIEW_GetOrigin(infoPtr, &offset);
/* Offset coordinates by the appropriate amount */
coords_offs.x -= offset.x;
coords_offs.y -= offset.y;
scrollInfo.cbSize = sizeof(SCROLLINFO);
scrollInfo.fMask = SIF_ALL;
/* Work out in which directions we can scroll */
if (GetScrollInfo(infoPtr->hwndSelf, SB_VERT, &scrollInfo))
{
if (scrollInfo.nPos != scrollInfo.nMin)
scroll |= SCROLL_UP;
if (((scrollInfo.nPage + scrollInfo.nPos) - 1) != scrollInfo.nMax)
scroll |= SCROLL_DOWN;
}
if (GetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo))
{
if (scrollInfo.nPos != scrollInfo.nMin)
scroll |= SCROLL_LEFT;
if (((scrollInfo.nPage + scrollInfo.nPos) - 1) != scrollInfo.nMax)
scroll |= SCROLL_RIGHT;
}
if (((coords_orig.x <= 0) && (scroll & SCROLL_LEFT)) ||
((coords_orig.y <= 0) && (scroll & SCROLL_UP)) ||
((coords_orig.x >= infoPtr->rcList.right) && (scroll & SCROLL_RIGHT)) ||
((coords_orig.y >= infoPtr->rcList.bottom) && (scroll & SCROLL_DOWN)))
{
LISTVIEW_MarqueeHighlight(infoPtr, &coords_orig, &coords_offs, &offset, scroll);
}
}
/***
* DESCRIPTION:
* Called whenever WM_MOUSEMOVE is received.
@ -3739,6 +3835,24 @@ static LRESULT LISTVIEW_MouseMove(LISTVIEW_INFO *infoPtr, WORD fwKeys, INT x, IN
coords_offs.x -= offset.x;
coords_offs.y -= offset.y;
/* Enable the timer if we're going outside our bounds, in case the user doesn't
move the mouse again */
if ((x <= 0) || (y <= 0) || (x >= infoPtr->rcList.right) ||
(y >= infoPtr->rcList.bottom))
{
if (!infoPtr->bScrolling)
{
infoPtr->bScrolling = TRUE;
SetTimer(infoPtr->hwndSelf, (UINT_PTR) infoPtr, 1, LISTVIEW_ScrollTimer);
}
}
else
{
infoPtr->bScrolling = FALSE;
KillTimer(infoPtr->hwndSelf, (UINT_PTR) infoPtr);
}
LISTVIEW_MarqueeHighlight(infoPtr, &coords_orig, &coords_offs, &offset, 0);
return 0;
}
@ -9464,6 +9578,8 @@ static LRESULT LISTVIEW_KillFocus(LISTVIEW_INFO *infoPtr)
SetRect(&infoPtr->marqueeRect, 0, 0, 0, 0);
infoPtr->bMarqueeSelect = FALSE;
infoPtr->bScrolling = FALSE;
KillTimer(infoPtr->hwndSelf, (UINT_PTR) infoPtr);
}
/* set window focus flag */
@ -9545,6 +9661,7 @@ static LRESULT LISTVIEW_LButtonDown(LISTVIEW_INFO *infoPtr, WORD wKey, INT x, IN
infoPtr->ptClickPos = pt;
infoPtr->bDragging = FALSE;
infoPtr->bMarqueeSelect = FALSE;
infoPtr->bScrolling = FALSE;
lvHitTestInfo.pt.x = x;
lvHitTestInfo.pt.y = y;
@ -9683,6 +9800,7 @@ static LRESULT LISTVIEW_LButtonUp(LISTVIEW_INFO *infoPtr, WORD wKey, INT x, INT
infoPtr->bDragging = FALSE;
infoPtr->bMarqueeSelect = FALSE;
infoPtr->bScrolling = FALSE;
KillTimer(infoPtr->hwndSelf, (UINT_PTR) infoPtr);
return 0;