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BOOL lastmouse;
intptr_t lastmouseRow;
intptr_t lastmouseColumn;
BOOL mouseDown; // TRUE if over a checkbox; the next two decide which ones
intptr_t mouseDownRow;
intptr_t mouseDownColumn;
static RECT checkboxRect(struct table *t, intptr_t row, intptr_t column, LONG rowHeight)
{
RECT r;
HDITEMW item;
intptr_t i;
// TODO count dividers
for (i = 0; i < column; i++) {
ZeroMemory(&item, sizeof (HDITEMW));
item.mask = HDI_WIDTH;
if (SendMessageW(t->header, HDM_GETITEM, (WPARAM) i, (LPARAM) (&item)) == FALSE)
abort();
r.left += item.cxy;
}
// TODO double-check to see if this takes any parameters
r.left += SendMessageW(t->header, HDM_GETBITMAPMARGIN, 0, 0);
r.right = r.left + t->checkboxWidth;
// TODO vertical center
r.top = row * rowHeight;
r.bottom = r.top + t->checkboxHeight;
return r;
}
// TODO clean up variables
static BOOL lParamInCheckbox(struct table *t, LPARAM lParam, intptr_t *row, intptr_t *column)
{
int x, y;
LONG h;
intptr_t col;
RECT r;
POINT pt;
x = GET_X_LPARAM(lParam);
y = GET_Y_LPARAM(lParam);
h = rowHeight(t);
y += t->firstVisible * h;
y -= t->headerHeight;
pt.y = y; // save actual y coordinate now
y /= h; // turn it into a row count
if (y >= t->count)
return FALSE;
col = hitTestColumn(t, x);
if (col == -1)
return FALSE;
if (t->columnTypes[col] != tableColumnCheckbox)
return FALSE;
r = checkboxRect(t, y, col, h);
pt.x = x;
if (PtInRect(&r, pt) == 0)
return FALSE;
if (row != NULL)
*row = y;
if (column != NULL)
*column = col;
return TRUE;
}
static void retrack(struct table *t)
{
TRACKMOUSEEVENT tm;
ZeroMemory(&tm, sizeof (TRACKMOUSEEVENT));
tm.cbSize = sizeof (TRACKMOUSEEVENT);
tm.dwFlags = TME_LEAVE; // TODO also TME_NONCLIENT?
tm.hwndTrack = t->hwnd;
if (_TrackMouseEvent(&tm) == 0)
abort();
}
static void track(struct table *t, LPARAM lParam)
{
intptr_t row, column;
BOOL prev;
intptr_t prevrow, prevcolumn;
prev = t->lastmouse;
prevrow = t->lastmouseRow;
prevcolumn = t->lastmouseColumn;
t->lastmouse = lParamInCheckbox(t, lParam, &(t->lastmouseRow), &(t->lastmouseColumn));
if (prev)
if (prevrow != row || prevcolumn != column)
redrawRow(t, prevrow);
redrawRow(t, t->lastmouseRow);
}
in selectItem
// TODO only if inside a checkbox
t->mouseDown = TRUE;
t->mouseDownRow = t->selected;
t->mouseDownColumn = t->focusedColumn;
in drawItem
// TODO replace all this
rsel.left = headeritem.left + xoff;
rsel.top = y;
rsel.right = rsel.left + t->checkboxWidth;
rsel.bottom = rsel.top + t->checkboxHeight;
{ COLORREF c;
c = RGB(255, 0, 0);
if (t->mouseDown) {
if (i == t->mouseDownRow && j == t->mouseDownColumn)
c = RGB(0, 0, 255);
} else if (t->lastmouse) {
if (i == t->lastmouseRow && j == t->lastmouseColumn)
c = RGB(0, 255, 0);
}
if (SetDCBrushColor(dc, c) == CLR_INVALID)
abort();
}
if (FillRect(dc, &rsel, GetStockObject(DC_BRUSH)) == 0)
abort();
break;
case WM_LBUTTONDOWN:
selectItem(t, wParam, lParam);
return 0;
case WM_LBUTTONUP:
// TODO toggle checkbox
if (t->mouseDown) {
t->mouseDown = FALSE;
redrawRow(t, t->mouseDownRow);
}
return 0;
// TODO other mouse buttons?
case WM_MOUSEMOVE:
track(t, lParam);
return 0;
case WM_MOUSELEAVE:
t->lastmouse = FALSE;
retrack(t);
// TODO redraw row mouse is currently over
// TODO split into its own function
if (t->mouseDown) {
t->mouseDown = FALSE;
redrawRow(t, t->mouseDownRow);
}
return 0;
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