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Mostly implemented vertical scrolling on selection change. The bottom row still needs fixing.

This commit is contained in:
Pietro Gagliardi 2014-11-18 12:29:14 -05:00
parent 0e13193310
commit 8a5d4f8b0e
1 changed files with 90 additions and 93 deletions
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183
wintable/main.c
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@ -336,99 +336,6 @@ static void recomputeHScroll(struct table *t)
SetScrollInfo(t->hwnd, SB_HORZ, &si, TRUE);
}
static void finishSelect(struct table *t, intptr_t prev)
{
if (t->selected < 0)
t->selected = 0;
if (t->selected >= t->count)
t->selected = t->count - 1;
// if we need to scroll, the scrolling will force a redraw, so we don't have to worry about doing so ourselves
if (t->selected < t->firstVisible)
;//TODO vscrollto(t, t->selected);
// note that this is not lastVisible(t) because the last visible row may only be partially visible and we want selections to make them fully visible
// TODO >=?
else if (t->selected > (t->firstVisible + t->pagesize))
;//TODO vscrollto(t, t->selected - t->pagesize);
else {
// no scrolling needed; redraw just the old and new rows
// if prev == t->selected, redraw that row at least once because the focused column may have changed
redrawRow(t, prev);
if (prev != t->selected)
redrawRow(t, t->selected);
}
}
static void keySelect(struct table *t, WPARAM wParam, LPARAM lParam)
{
intptr_t prev;
// TODO figure out correct behavior with nothing selected
if (t->count == 0) // don't try to do anything if there's nothing to do
return;
prev = t->selected;
switch (wParam) {
case VK_UP:
t->selected--;
break;
case VK_DOWN:
t->selected++;
break;
case VK_PRIOR:
t->selected -= t->pagesize;
break;
case VK_NEXT:
t->selected += t->pagesize;
break;
case VK_HOME:
t->selected = 0;
break;
case VK_END:
t->selected = t->count - 1;
break;
case VK_LEFT:
t->focusedColumn--;
if (t->focusedColumn < 0)
if (t->nColumns == 0) // peg at -1
t->focusedColumn = -1;
else
t->focusedColumn = 0;
break;
case VK_RIGHT:
t->focusedColumn++;
if (t->focusedColumn >= t->nColumns)
if (t->nColumns == 0) // peg at -1
t->focusedColumn = -1;
else
t->focusedColumn = t->nColumns - 1;
break;
// TODO keyboard shortcuts for going to the first/last column?
default:
// don't touch anything
return;
}
finishSelect(t, prev);
}
static void selectItem(struct table *t, WPARAM wParam, LPARAM lParam)
{
int x, y;
LONG h;
intptr_t prev;
prev = t->selected;
x = GET_X_LPARAM(lParam);
y = GET_Y_LPARAM(lParam);
h = rowHeight(t);
y += t->firstVisible * h;
y -= t->headerHeight;
y /= h;
t->selected = y;
if (t->selected >= t->count)
t->selected = -1;
t->focusedColumn = hitTestColumn(t, x);
finishSelect(t, prev);
}
static void vscrollto(struct table *t, intptr_t newpos)
{
SCROLLINFO si;
@ -525,6 +432,96 @@ static void vscroll(struct table *t, WPARAM wParam)
vscrollto(t, newpos);
}
static void finishSelect(struct table *t, intptr_t prev)
{
if (t->selected < 0)
t->selected = 0;
if (t->selected >= t->count)
t->selected = t->count - 1;
// always redraw the old row, even if it matches the new row (since the focused column may have changed)
redrawRow(t, prev);
// if we need to scroll, the scrolling will force a redraw, so we don't have to worry about doing so ourselves
if (t->selected < t->firstVisible)
vscrollto(t, t->selected);
// note that this is not lastVisible(t) because the last visible row may only be partially visible and we want selections to make them fully visible
else if (t->selected >= (t->firstVisible + t->pagesize))
vscrollto(t, t->selected - t->pagesize);
// no scrolling needed; redraw just the new row (but don't redraw it twice
else if (prev != t->selected)
redrawRow(t, t->selected);
}
static void keySelect(struct table *t, WPARAM wParam, LPARAM lParam)
{
intptr_t prev;
// TODO figure out correct behavior with nothing selected
if (t->count == 0) // don't try to do anything if there's nothing to do
return;
prev = t->selected;
switch (wParam) {
case VK_UP:
t->selected--;
break;
case VK_DOWN:
t->selected++;
break;
case VK_PRIOR:
t->selected -= t->pagesize;
break;
case VK_NEXT:
t->selected += t->pagesize;
break;
case VK_HOME:
t->selected = 0;
break;
case VK_END:
t->selected = t->count - 1;
break;
case VK_LEFT:
t->focusedColumn--;
if (t->focusedColumn < 0)
if (t->nColumns == 0) // peg at -1
t->focusedColumn = -1;
else
t->focusedColumn = 0;
break;
case VK_RIGHT:
t->focusedColumn++;
if (t->focusedColumn >= t->nColumns)
if (t->nColumns == 0) // peg at -1
t->focusedColumn = -1;
else
t->focusedColumn = t->nColumns - 1;
break;
// TODO keyboard shortcuts for going to the first/last column?
default:
// don't touch anything
return;
}
finishSelect(t, prev);
}
static void selectItem(struct table *t, WPARAM wParam, LPARAM lParam)
{
int x, y;
LONG h;
intptr_t prev;
prev = t->selected;
x = GET_X_LPARAM(lParam);
y = GET_Y_LPARAM(lParam);
h = rowHeight(t);
y += t->firstVisible * h;
y -= t->headerHeight;
y /= h;
t->selected = y;
if (t->selected >= t->count)
t->selected = -1;
t->focusedColumn = hitTestColumn(t, x);
finishSelect(t, prev);
}
static void resize(struct table *t)
{
RECT r;