SettingsWinProc

zoomTo

void zoomTo	(	int	,
		int	,
		int
	)

Definition at line 40 of file winproc.c.

Referenced by SettingsWinProc(), and WindowProcedure().

{
    int tbPos = 0;
    int tempZoom = newZoom;

    long clientRectScrollbox[4];
    long clientRectImageArea[4];
    int x, y, w, h;
    GetClientRect(hScrollbox, (LPRECT) &clientRectScrollbox);
    GetClientRect(hImageArea, (LPRECT) &clientRectImageArea);
    w = clientRectImageArea[2] * clientRectScrollbox[2] / (clientRectImageArea[2] * newZoom / zoom);
    h = clientRectImageArea[3] * clientRectScrollbox[3] / (clientRectImageArea[3] * newZoom / zoom);
    x = max(0, min(clientRectImageArea[2] - w, mouseX - w / 2)) * newZoom / zoom;
    y = max(0, min(clientRectImageArea[3] - h, mouseY - h / 2)) * newZoom / zoom;

    zoom = newZoom;

    ShowWindow(hSelection, SW_HIDE);
    MoveWindow(hImageArea, 3, 3, imgXRes * zoom / 1000, imgYRes * zoom / 1000, FALSE);
    InvalidateRect(hScrollbox, NULL, TRUE);
    InvalidateRect(hImageArea, NULL, FALSE);

    SendMessage(hScrollbox, WM_HSCROLL, SB_THUMBPOSITION | (x << 16), 0);
    SendMessage(hScrollbox, WM_VSCROLL, SB_THUMBPOSITION | (y << 16), 0);

    while (tempZoom > 125)
    {
        tbPos++;
        tempZoom = tempZoom >> 1;
    }
    SendMessage(hTrackbarZoom, TBM_SETPOS, (WPARAM) TRUE, (LPARAM) tbPos);
}

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