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Implemented rowColumnToClientRect() (was rowColumnToClientCoord() but decided that the full RECT would be more useful); not sure if I'm going to actually use it now though since full-on redrawing the old and new rows would probably be more correct in doselect()...

This commit is contained in:
Pietro Gagliardi 2014-12-14 02:51:34 -05:00
parent fa89a497ed
commit ad12b8b1af
1 changed files with 44 additions and 3 deletions
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47
wintable/new/coord.h
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@ -87,10 +87,51 @@ static struct rowcol lParamToRowColumn(struct table *t, LPARAM lParam)
return clientCoordToRowColumn(t, pt);
}
// returns TRUE if the row is visible and thus has client coordinates; FALSE otherwise
static BOOL rowColumnToClientCoord(struct table *t, struct rowcol rc, POINT *pt)
// returns TRUE if the row is visible (even partially visible) and thus has a rectangle in the client area; FALSE otherwise
static BOOL rowColumnToClientRect(struct table *t, struct rowcol rc, RECT *r)
{
// TODO
RECT client;
RECT out; // don't change r if we return FALSE
RECT colrect;
LONG height;
intptr_t xpos;
intptr_t i;
if (rc.row < t->vscrollpos)
return FALSE;
rc.row -= t->vscrollpos; // align with client.top
if (GetClientRect(t->hwnd, &client) == 0)
panic("error getting Table client rect in rowColumnToClientRect()");
client.top += t->headerHeight;
height = rowht(t);
out.top = client.top + (rc.row * height);
if (out.top >= client.bottom) // >= because RECT.bottom is the first pixel outside the rectangle
return FALSE;
out.bottom = out.top + height;
// and again the columns are the hard part
// so we start with client.left - t->hscrollpos, then keep adding widths until we get to the column we want
xpos = client.left - t->hscrollpos;
for (i = 0; i < rc.column; i++) {
// TODO error check
SendMessage(t->header, HDM_GETITEMRECT, (WPARAM) i, (LPARAM) (&colrect));
xpos += colrect.right - colrect.left;
}
// did we stray too far to the right? if so it's not visible
if (xpos >= client.right) // >= because RECT.right is the first pixel outside the rectangle
return FALSE;
out.left = xpos;
// TODO error check
SendMessage(t->header, HDM_GETITEMRECT, (WPARAM) (rc.column), (LPARAM) (&colrect));
out.right = xpos + (colrect.right - colrect.left);
// and is this too far to the left?
if (out.right < client.left) // < because RECT.left is the first pixel inside the rect
return FALSE;
*r = out;
return TRUE;
}
// TODO idealCoordToRowColumn/rowColumnToIdealCoord?