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Scrolling mostly works now...

This commit is contained in:
Pietro Gagliardi 2014-10-19 23:48:25 -04:00
parent 79d096edeb
commit 09b5fefac2
1 changed files with 53 additions and 13 deletions
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66
wintable/main.c
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@ -35,9 +35,27 @@ struct table {
static void vscroll(struct table *t, WPARAM wParam)
{
HFONT thisfont, prevfont;
TEXTMETRICW tm;
HDC dc;
SCROLLINFO si;
intptr_t newpos;
// TODO split into a function
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();
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_POS | SIF_TRACKPOS;
@ -76,7 +94,7 @@ static void vscroll(struct table *t, WPARAM wParam)
newpos = (t->count - t->pagesize);
// negative because ScrollWindowEx() is "backwards"
if (ScrollWindowEx(t->hwnd, 0, -(newpos - t->firstVisible),
if (ScrollWindowEx(t->hwnd, 0, (-(newpos - t->firstVisible)) * tm.tmHeight,
NULL, NULL, NULL, NULL,
SW_ERASE | SW_INVALIDATE) == ERROR)
abort();
@ -92,6 +110,39 @@ static void vscroll(struct table *t, WPARAM wParam)
SetScrollInfo(t->hwnd, SB_VERT, &si, TRUE);
}
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;
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_RANGE | SIF_PAGE;
si.nMin = 0;
si.nMax = t->count - 1;
si.nPage = t->pagesize;
SetScrollInfo(t->hwnd, SB_VERT, &si, TRUE);
}
static void drawItems(struct table *t, HDC dc, RECT cliprect)
{
HFONT thisfont, prevfont;
@ -164,8 +215,6 @@ static LRESULT CALLBACK tableWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM
struct table *t;
HDC dc;
PAINTSTRUCT ps;
RECT r;
SCROLLINFO si;
t = (struct table *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
if (t == NULL) {
@ -203,16 +252,7 @@ t->selected = 5;t->count=100;//TODO
vscroll(t, wParam);
return 0;
case WM_SIZE:
if (GetClientRect(hwnd, &r) == 0)
abort();
/*TODO
t->pagesize = (r.bottom - r.top) / tm.tmHeight;
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_PAGE;
si.nPage = t->pagesize;
SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
*/
resize(t);
return 0;
default:
return DefWindowProcW(hwnd, uMsg, wParam, lParam);