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#include "./layout.h"
#include <windows.h>
BOOL Layout_Initialize( HWND hwnd, const INT *itemList, INT itemCount, LAYOUTITEM *layout )
{
if ( NULL == itemList || NULL == layout )
return FALSE;
LAYOUTITEM *item;
for ( INT i = 0; i < itemCount; i++ )
{
item = &layout[ i ];
item->hwnd = GetDlgItem( hwnd, itemList[ i ] );
if ( item->hwnd == NULL )
continue;
if ( FALSE == GetWindowRect( item->hwnd, &item->rect ) )
SetRectEmpty( &item->rect );
else
MapWindowPoints( HWND_DESKTOP, hwnd, (POINT *)&item->rect, 2 );
item->cx = item->rect.right - item->rect.left;
item->cy = item->rect.bottom - item->rect.top;
item->x = item->rect.left;
item->y = item->rect.top;
item->flags = 0;
}
return TRUE;
}
BOOL Layout_Perform( HWND hwnd, LAYOUTITEM *layout, INT layoutCount, BOOL fRedraw )
{
HDWP hdwp, hdwpTemp;
hdwp = BeginDeferWindowPos( layoutCount );
if ( hdwp == NULL )
return FALSE;
UINT baseFlags = SWP_NOACTIVATE | SWP_NOZORDER;
if ( fRedraw == FALSE )
baseFlags |= ( SWP_NOREDRAW | SWP_NOCOPYBITS );
LAYOUTITEM *item;
for ( INT i = 0; i < layoutCount; i++ )
{
item = &layout[ i ];
if ( item->hwnd == NULL )
continue;
UINT flags = baseFlags | ( item->flags & ~( SWP_HIDEWINDOW | SWP_SHOWWINDOW ) );
if ( item->x == item->rect.left && item->y == item->rect.top )
flags |= SWP_NOMOVE;
if ( item->cx == ( item->rect.right - item->rect.left ) && item->cy == ( item->rect.bottom - item->rect.top ) )
flags |= SWP_NOSIZE;
if ( ( SWP_HIDEWINDOW & item->flags ) != 0 )
{
UINT windowStyle = (UINT)GetWindowLongPtr( item->hwnd, GWL_STYLE );
if ( ( WS_VISIBLE & windowStyle ) != 0 )
{
SetWindowLongPtr( item->hwnd, GWL_STYLE, windowStyle & ~WS_VISIBLE );
if ( FALSE != fRedraw )
{
RedrawWindow( hwnd, &item->rect, NULL, RDW_INVALIDATE | RDW_ERASE );
}
}
}
if ( ( SWP_NOSIZE | SWP_NOMOVE ) != ( ( SWP_NOSIZE | SWP_NOMOVE | SWP_FRAMECHANGED ) & flags ) )
{
hdwpTemp = DeferWindowPos( hdwp, item->hwnd, NULL, item->x, item->y, item->cx, item->cy, flags );
if ( hdwpTemp == NULL )
break;
hdwp = hdwpTemp;
}
}
BOOL result = ( hdwp != NULL ) ? EndDeferWindowPos( hdwp ) : FALSE;
for ( INT i = 0; i < layoutCount; i++ )
{
item = &layout[ i ];
if ( NULL != item->hwnd && 0 != ( SWP_SHOWWINDOW & item->flags ) )
{
UINT windowStyle = (UINT)GetWindowLongPtr( item->hwnd, GWL_STYLE );
if ( 0 == ( WS_VISIBLE & windowStyle ) )
{
SetWindowLongPtr( item->hwnd, GWL_STYLE, windowStyle | WS_VISIBLE );
if ( FALSE != fRedraw )
RedrawWindow( item->hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE | RDW_FRAME | RDW_ALLCHILDREN );
}
}
}
return result;
}
static void Layout_SetItemVisibility( const RECT *rect, LAYOUTITEM *item )
{
if ( NULL == item || NULL == item->hwnd )
return;
BOOL outsider = ( item->cx <= 0 || item->cy <= 0 ||
item->x >= rect->right || item->y >= rect->bottom ||
( item->x + item->cx ) < rect->left || ( item->y + item->cy ) < rect->top );
UINT windowStyle = (UINT)GetWindowLongPtr( item->hwnd, GWL_STYLE );
if ( 0 == ( WS_VISIBLE & windowStyle ) )
{
if ( !outsider )
{
item->flags |= SWP_SHOWWINDOW;
}
}
else
{
if ( outsider )
{
item->flags |= SWP_HIDEWINDOW;
}
}
}
BOOL Layout_SetVisibility( const RECT *rect, LAYOUTITEM *layout, INT layoutCount )
{
if ( NULL == rect || NULL == layout )
return FALSE;
for ( INT i = 0; i < layoutCount; i++ )
{
Layout_SetItemVisibility( rect, &layout[ i ] );
}
return TRUE;
}
BOOL Layout_SetVisibilityEx( const RECT *rect, const INT *indexList, INT indexCount, LAYOUTITEM *layout )
{
if ( NULL == rect || NULL == indexList || NULL == layout )
return FALSE;
for ( INT i = 0; i < indexCount; i++ )
{
Layout_SetItemVisibility( rect, &layout[ indexList[ i ] ] );
}
return TRUE;
}
BOOL Layout_GetValidRgn( HRGN validRgn, POINTS parrentOffset, const RECT *validRect, LAYOUTITEM *layout, INT layoutCount )
{
if ( NULL == validRgn )
return FALSE;
SetRectRgn( validRgn, 0, 0, 0, 0 );
if ( NULL == layout )
return FALSE;
HRGN rgn = CreateRectRgn( 0, 0, 0, 0 );
if ( NULL == rgn )
return FALSE;
LAYOUTITEM *item;
LONG l, t, r, b;
for ( INT i = 0; i < layoutCount; i++ )
{
item = &layout[ i ];
if ( NULL != item->hwnd && 0 == ( ( SWP_HIDEWINDOW | SWP_SHOWWINDOW ) & item->flags ) )
{
l = item->x + parrentOffset.x;
t = item->y + parrentOffset.y;
r = l + item->cx;
b = t + item->cy;
if ( 0 != ( SWP_NOREDRAW & item->flags ) || ( l == item->rect.left && t == item->rect.top && r == item->rect.right && b == item->rect.bottom ) )
{
if ( NULL != validRect )
{
if ( l < validRect->left )
l = validRect->left;
if ( t < validRect->top )
t = validRect->top;
if ( r > validRect->right )
r = validRect->right;
if ( b > validRect->bottom )
b = validRect->bottom;
}
if ( l < r && t < b )
{
SetRectRgn( rgn, l, t, r, b );
CombineRgn( validRgn, validRgn, rgn, RGN_OR );
if ( NULLREGION != GetUpdateRgn( item->hwnd, rgn, FALSE ) )
{
OffsetRgn( rgn, parrentOffset.x, parrentOffset.y );
CombineRgn( validRgn, validRgn, rgn, RGN_DIFF );
}
}
}
}
}
DeleteObject( rgn );
return TRUE;
}
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