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Wrote up a lParamInCheckbox() that we will use for properly hit-testing checkboxes in the new Windows Table.

This commit is contained in:
Pietro Gagliardi 2014-11-20 18:21:52 -05:00
parent 396d73a634
commit 2ddafc8230
1 changed files with 57 additions and 0 deletions
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57
wintable/main.c
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@ -225,6 +225,63 @@ static void lParamToRowColumn(struct table *t, LPARAM lParam, intptr_t *row, int
*column = hitTestColumn(t, x);
}
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;