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charmap: scroll 1 position on SB_LINEDOWN and 1 page on SB_PAGEDOWN, update window on SB_THUMPTRACK, use ScrollWindowEx on scrolling.

Browse source 
svn path=/trunk/; revision=30422
This commit is contained in:
Timo Kreuzer 2007-11-13 14:18:44 +00:00
parent 6b877de3d5
commit 2b043c2212
2 changed files with 41 additions and 17 deletions
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56
reactos/base/applications/charmap/map.c
View file

@ -91,7 +91,7 @@ FillGrid(PMAP infoPtr,
for (y = 0; y < YCELLS; y++)
for (x = 0; x < XCELLS; x++)
{
ch = (WCHAR)((256 * infoPtr->iPage) + (XCELLS * y) + x);
ch = (WCHAR)((XCELLS * (y + infoPtr->iYStart)) + x);
TagFontToCell(&infoPtr->Cells[y][x], ch);
@ -348,43 +348,67 @@ OnVScroll(PMAP infoPtr,
INT Value,
INT Pos)
{
INT iYDiff, iOldYStart = infoPtr->iYStart;
switch (Value)
{
case SB_LINEUP:
infoPtr->iPage -= 1;
infoPtr->iYStart -= 1;
break;
case SB_LINEDOWN:
infoPtr->iPage += 1;
infoPtr->iYStart += 1;
break;
case SB_PAGEUP:
infoPtr->iPage -= 16;
infoPtr->iYStart -= YCELLS;
break;
case SB_PAGEDOWN:
infoPtr->iPage += 16;
infoPtr->iYStart += YCELLS;
break;
case SB_THUMBPOSITION:
infoPtr->iPage = Pos;
case SB_THUMBTRACK:
infoPtr->iYStart = Pos;
break;
default:
break;
}
infoPtr->iPage = max(0,
min(infoPtr->iPage, 255));
infoPtr->iYStart = max(0,
min(infoPtr->iYStart, 255*16));
SetScrollPos(infoPtr->hMapWnd,
SB_VERT,
infoPtr->iPage,
TRUE);
iYDiff = iOldYStart - infoPtr->iYStart;
if (iYDiff)
{
SetScrollPos(infoPtr->hMapWnd,
SB_VERT,
infoPtr->iYStart,
TRUE);
InvalidateRect(infoPtr->hMapWnd,
NULL,
TRUE);
if (abs(iYDiff) < YCELLS)
{
RECT rect;
GetClientRect(infoPtr->hMapWnd, &rect);
rect.top += 2;
rect.bottom -= 2;
ScrollWindowEx(infoPtr->hMapWnd,
0,
iYDiff * infoPtr->CellSize.cy,
&rect,
&rect,
NULL,
NULL,
SW_INVALIDATE);
}
else
{
InvalidateRect(infoPtr->hMapWnd,
NULL,
TRUE);
}
}
}

2
reactos/base/applications/charmap/precomp.h
View file

@ -36,7 +36,7 @@ typedef struct _MAP
PCELL pActiveCell;
HFONT hFont;
LOGFONTW CurrentFont;
INT iPage;
INT iYStart;
} MAP, *PMAP;
typedef struct {