Initial community commit

1 files changed, 215 insertions, 0 deletions

diff --git a/Src/Plugins/Library/ml_downloads/layout.cpp b/Src/Plugins/Library/ml_downloads/layout.cpp
new file mode 100644
index 00000000..bfdd9591
--- /dev/null
+++ b/Src/Plugins/Library/ml_downloads/layout.cpp
@@ -0,0 +1,215 @@
+#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;
+}
\ No newline at end of file