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// 13 december 2014
// damn winsock
static void doselect(struct table *t, intptr_t row, intptr_t column)
{
RECT r, client;
intptr_t oldrow;
LONG height;
struct rowcol rc;
BOOL dovscroll;
oldrow = t->selectedRow;
t->selectedRow = row;
t->selectedColumn = column;
if (GetClientRect(t->hwnd, &client) == 0)
panic("error getting Table client rect in doselect()");
client.top += t->headerHeight;
height = rowht(t);
// first vertically scroll to the new row to make it fully visible (or as visible as possible)
if (t->selectedRow < t->vscrollpos)
vscrollto(t, t->selectedRow);
else {
rc.row = t->selectedRow;
rc.column = t->selectedColumn;
// first assume entirely outside the client area
dovscroll = TRUE;
if (rowColumnToClientRect(t, rc, &r))
// partially outside the client area?
if (r.bottom <= client.bottom) // <= here since we are comparing bottoms (which are the first pixels outside the rectangle)
dovscroll = FALSE;
if (dovscroll)
vscrollto(t, t->selectedRow - t->vpagesize + 1); // + 1 because apparently just t->selectedRow - t->vpagesize results in no scrolling (t->selectedRow - t->vpagesize == t->vscrollpos)...
}
// TODO horizontal scroll
// now redraw the old and new /rows/
// we do this after scrolling so the rectangles to be invalidated make sense
r.left = client.left;
r.right = client.right;
if (oldrow != -1 && oldrow >= t->vscrollpos) {
r.top = client.top + ((oldrow - t->vscrollpos) * height);
r.bottom = r.top + height;
if (InvalidateRect(t->hwnd, &r, TRUE) == 0)
panic("error queueing previously selected row for redraw in doselect()");
}
// t->selectedRow must be visible by this point; we scrolled to it
if (t->selectedRow != -1 && t->selectedRow != oldrow) {
r.top = client.top + ((t->selectedRow - t->vscrollpos) * height);
r.bottom = r.top + height;
if (InvalidateRect(t->hwnd, &r, TRUE) == 0)
panic("error queueing newly selected row for redraw in doselect()");
}
}
// TODO which WM_xBUTTONDOWNs?
HANDLER(mouseDownSelectHandler)
{
struct rowcol rc;
rc = lParamToRowColumn(t, lParam);
// don't check if lParamToRowColumn() returned row -1 or column -1; we want deselection behavior
doselect(t, rc.row, rc.column);
*lResult = 0;
return TRUE;
}
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