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Worked on vertical scrolilng. Not done.

This commit is contained in:
Pietro Gagliardi 2014-10-19 23:33:08 -04:00
parent a3ad384a34
commit 79d096edeb
1 changed files with 77 additions and 0 deletions
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77
wintable/main.c
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@ -30,8 +30,68 @@ struct table {
intptr_t selected;
intptr_t count;
intptr_t firstVisible;
intptr_t pagesize;
};
static void vscroll(struct table *t, WPARAM wParam)
{
SCROLLINFO si;
intptr_t newpos;
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_POS | SIF_TRACKPOS;
if (GetScrollInfo(t->hwnd, SB_VERT, &si) == 0)
abort();
newpos = t->firstVisible;
switch (LOWORD(wParam)) {
case SB_TOP:
newpos = 0;
break;
case SB_BOTTOM:
newpos = t->count - t->pagesize;
break;
case SB_LINEUP:
newpos--;
break;
case SB_LINEDOWN:
newpos++;
break;
case SB_PAGEUP:
newpos -= t->pagesize;
break;
case SB_PAGEDOWN:
newpos += t->pagesize;
break;
case SB_THUMBPOSITION:
newpos = (intptr_t) (si.nPos);
break;
case SB_THUMBTRACK:
newpos = (intptr_t) (si.nTrackPos);
}
if (newpos < 0)
newpos = 0;
if (newpos > (t->count - t->pagesize))
newpos = (t->count - t->pagesize);
// negative because ScrollWindowEx() is "backwards"
if (ScrollWindowEx(t->hwnd, 0, -(newpos - t->firstVisible),
NULL, NULL, NULL, NULL,
SW_ERASE | SW_INVALIDATE) == ERROR)
abort();
t->firstVisible = newpos;
ZeroMemory(&si, sizeof (SCROLLINFO));
si.cbSize = sizeof (SCROLLINFO);
si.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
si.nPage = t->pagesize;
si.nMin = 0;
si.nMax = t->count - 1; // nMax is inclusive
si.nPos = t->firstVisible;
SetScrollInfo(t->hwnd, SB_VERT, &si, TRUE);
}
static void drawItems(struct table *t, HDC dc, RECT cliprect)
{
HFONT thisfont, prevfont;
@ -104,6 +164,8 @@ 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) {
@ -137,6 +199,21 @@ t->selected = 5;t->count=100;//TODO
return 0;
case WM_GETFONT:
return (LRESULT) t->font;
case WM_VSCROLL:
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);
*/
return 0;
default:
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}