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Numbered each of the sample items.

This commit is contained in:
Pietro Gagliardi 2014-10-20 11:19:35 -04:00
parent 3aa4fb3183
commit 42ca7ced99
1 changed files with 11 additions and 22 deletions
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33
wintable/main.c
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@ -38,14 +38,12 @@ struct table {
int wheelCarry;
};
static void vscrollto(struct table *t, intptr_t newpos)
static LONG rowHeight(struct table *t)
{
HFONT thisfont, prevfont;
TEXTMETRICW tm;
HDC dc;
SCROLLINFO si;
// TODO split into a function
dc = GetDC(t->hwnd);
if (dc == NULL)
abort();
@ -59,6 +57,12 @@ static void vscrollto(struct table *t, intptr_t newpos)
abort();
if (ReleaseDC(t->hwnd, dc) == 0)
abort();
return tm.tmHeight;
}
static void vscrollto(struct table *t, intptr_t newpos)
{
SCROLLINFO si;
if (newpos < 0)
newpos = 0;
@ -66,7 +70,7 @@ static void vscrollto(struct table *t, intptr_t newpos)
newpos = (t->count - t->pagesize);
// negative because ScrollWindowEx() is "backwards"
if (ScrollWindowEx(t->hwnd, 0, (-(newpos - t->firstVisible)) * tm.tmHeight,
if (ScrollWindowEx(t->hwnd, 0, (-(newpos - t->firstVisible)) * rowHeight(t),
NULL, NULL, NULL, NULL,
SW_ERASE | SW_INVALIDATE) == ERROR)
abort();
@ -151,28 +155,12 @@ static void vscroll(struct table *t, WPARAM wParam)
static void resize(struct table *t)
{
HFONT thisfont, prevfont;
TEXTMETRICW tm;
HDC dc;
RECT r;
SCROLLINFO si;
if (GetClientRect(t->hwnd, &r) == 0)
abort();
dc = GetDC(t->hwnd);
if (dc == NULL)
abort();
thisfont = t->font; // in case WM_SETFONT happens before we return
prevfont = (HFONT) SelectObject(dc, thisfont);
if (prevfont == NULL)
abort();
if (GetTextMetricsW(dc, &tm) == 0)
abort();
if (SelectObject(dc, prevfont) != (HGDIOBJ) (thisfont))
abort();
if (ReleaseDC(t->hwnd, dc) == 0)
abort();
t->pagesize = (r.bottom - r.top) / tm.tmHeight;
t->pagesize = (r.bottom - r.top) / rowHeight(t);
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_RANGE | SIF_PAGE;
@ -223,6 +211,7 @@ static void drawItems(struct table *t, HDC dc, RECT cliprect)
for (i = first; i < last; i++) {
RECT rsel;
HBRUSH background;
WCHAR msg[100];
// TODO check errors
// TODO verify correct colors
@ -238,7 +227,7 @@ static void drawItems(struct table *t, HDC dc, RECT cliprect)
SetTextColor(dc, GetSysColor(COLOR_WINDOWTEXT));
FillRect(dc, &rsel, background);
SetBkMode(dc, TRANSPARENT);
TextOutW(dc, r.left, y, L"Item", 4);
TextOutW(dc, r.left, y, msg, wsprintf(msg, L"Item %d", i));
y += tm.tmHeight;
}