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Implemented horizontal scroll on the left in doselect(). Horizontal scroll on the right is mostly written, but nonworking.

This commit is contained in:
Pietro Gagliardi 2014-12-14 17:10:08 -05:00
parent 33f7ac1142
commit c58920dadd
1 changed files with 21 additions and 2 deletions
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23
wintable/new/select.h
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@ -5,9 +5,12 @@ static void doselect(struct table *t, intptr_t row, intptr_t column)
{
RECT r, client;
intptr_t oldrow;
LONG height;
LONG width, height;
struct rowcol rc;
BOOL dovscroll;
intptr_t i;
intptr_t xpos;
LONG clientWidth;
oldrow = t->selectedRow;
t->selectedRow = row;
@ -34,7 +37,23 @@ static void doselect(struct table *t, intptr_t row, intptr_t column)
vscrollto(t, t->selectedRow - t->vpagesize + 1); // + 1 because apparently just t->selectedRow - t->vpagesize results in no scrolling (t->selectedRow - t->vpagesize == t->vscrollpos)...
}
// TODO horizontal scroll
// now see if the cell we want is to the left of offscreen, in which case scroll to its x-position
xpos = 0;
for (i = 0; i < t->selectedColumn; i++)
xpos += columnWidth(t, i);
if (xpos < t->hscrollpos)
hscrollto(t, xpos);
else while(1){break;
// if the full cell is not visible, scroll to the right just enough to make it fully visible (or as visible as possible)
width = columnWidth(t, t->selectedColumn);
clientWidth = client.right - client.left;
if (xpos + width < t->hscrollpos + clientWidth)
// if the column is too wide, then just make it occupy the whole visible area (left-aligned)
if (width > clientWidth)
hscrollto(t, xpos);
else
hscrollby(t, clientWidth - width);
}
// now redraw the old and new /rows/
// we do this after scrolling so the rectangles to be invalidated make sense