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wordpad: Avoid filling overlapping rectangles in print preview. 

This reduces the amount of flicker seen from redrawing the window.
This commit is contained in:
Dylan Smith 2010-07-19 18:21:07 -04:00 committed by Alexandre Julliard
parent 0cd3ee3d91
commit 9de8357965
1 changed files with 35 additions and 13 deletions
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46
programs/wordpad/print.c
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@ -845,33 +845,46 @@ static void update_preview_buttons(HWND hMainWnd)
static LRESULT print_preview(HWND hwndPreview)
{
HPEN hPen, oldPen;
HDC hdc;
HRGN back_rgn, excl_rgn;
RECT window, background;
PAINTSTRUCT ps;
int x, y;
hdc = BeginPaint(hwndPreview, &ps);
GetClientRect(hwndPreview, &window);
FillRect(hdc, &window, GetStockObject(GRAY_BRUSH));
back_rgn = CreateRectRgnIndirect(&window);
x = preview.spacing.cx - GetScrollPos(hwndPreview, SB_HORZ);
y = preview.spacing.cy - GetScrollPos(hwndPreview, SB_VERT);
/* draw page outlines */
hPen = CreatePen(PS_SOLID|PS_INSIDEFRAME, 2, RGB(0,0,0));
oldPen = SelectObject(hdc, hPen);
background.left = x - 2;
background.right = background.left + preview.bmScaledSize.cx + 4;
background.right = x + preview.bmScaledSize.cx + 2;
background.top = y - 2;
background.bottom = background.top + preview.bmScaledSize.cy + 4;
FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
background.bottom = y + preview.bmScaledSize.cy + 2;
Rectangle(hdc, background.left, background.top,
background.right, background.bottom);
excl_rgn = CreateRectRgnIndirect(&background);
CombineRgn(back_rgn, back_rgn, excl_rgn, RGN_DIFF);
if(preview.pages_shown > 1)
{
background.left += preview.bmScaledSize.cx + preview.spacing.cx;
background.right += preview.bmScaledSize.cx + preview.spacing.cx;
FillRect(hdc, &background, GetStockObject(BLACK_BRUSH));
Rectangle(hdc, background.left, background.top,
background.right, background.bottom);
SetRectRgn(excl_rgn, background.left, background.top,
background.right, background.bottom);
CombineRgn(back_rgn, back_rgn, excl_rgn, RGN_DIFF);
}
SelectObject(hdc, oldPen);
DeleteObject(hPen);
FillRgn(hdc, back_rgn, GetStockObject(GRAY_BRUSH));
DeleteObject(excl_rgn);
DeleteObject(back_rgn);
StretchBlt(hdc, x, y, preview.bmScaledSize.cx, preview.bmScaledSize.cy,
preview.hdc, 0, 0, preview.bmSize.cx, preview.bmSize.cy, SRCCOPY);
@ -880,12 +893,21 @@ static LRESULT print_preview(HWND hwndPreview)
if(preview.pages_shown > 1)
{
if (!is_last_preview_page(preview.page)) {
x += preview.spacing.cx + preview.bmScaledSize.cx;
StretchBlt(hdc, x, y, preview.bmScaledSize.cx, preview.bmScaledSize.cy,
preview.hdc2, 0, 0, preview.bmSize.cx, preview.bmSize.cy, SRCCOPY);
StretchBlt(hdc, x, y,
preview.bmScaledSize.cx, preview.bmScaledSize.cy,
preview.hdc2, 0, 0,
preview.bmSize.cx, preview.bmSize.cy, SRCCOPY);
if (!is_last_preview_page(preview.page))
draw_margin_lines(hdc, x, y, preview.zoomratio);
} else {
background.left += 2;
background.right -= 2;
background.top += 2;
background.bottom -= 2;
FillRect(hdc, &background, GetStockObject(WHITE_BRUSH));
}
}
preview.window = window;