layout: invalidate and recalculate, automatically

1 files changed, 12 insertions, 2 deletions

diff --git a/alf/alflayout.h b/alf/alflayout.h
index c279afa..e326490 100644
--- a/alf/alflayout.h
+++ b/alf/alflayout.h
@@ -24,6 +24,9 @@ typedef struct {
     int expand : 1;
 } ALFLayoutRowOrColumn;
 
+#define ALF_LAYOUT_NEED_RECALC   ((DWORD)1)
+#define ALF_LAYOUT_NEED_REAPPLY  ((DWORD)2)
+
 typedef struct {
     ALFListHeader         widgets;
     ALFLayoutRowOrColumn *columns;
@@ -34,6 +37,7 @@ typedef struct {
     int                   totalMinHeight;
     int                   expandoColumnCount;
     int                   expandoRowCount;
+    DWORD                 layoutValididityFlags;
 } ALFLayout;
 
 void
@@ -43,7 +47,7 @@ void
 ALF_Layout_Clear(ALFLayout *layout);
 
 void
-ALF_Layout_CalcSizes(ALFLayout *layout, HWND window);
+ALF_Layout_GetMinSize(ALFLayout *layout, HWND window, SIZE *size);
 
 void
 ALF_Layout_Apply(ALFLayout *layout, HWND window);
@@ -55,7 +59,7 @@ BOOL
 ALF_Layout_RemoveWidget(ALFLayout *layout, HWND window, HWND widget, BOOL destroy);
 
 BOOL
-ALF_Layout_SetWidgetParams(ALFLayout *layout, const ALFWidgetLayoutParams *params, HWND widget);
+ALF_Layout_SetWidgetParams(ALFLayout *layout, HWND window, const ALFWidgetLayoutParams *params, HWND widget);
 
 BOOL
 ALF_Layout_GetWidgetParams(ALFLayout *layout, ALFWidgetLayoutParams *params, HWND widget);
@@ -65,3 +69,9 @@ ALF_Layout_HandleMessage(ALFLayout *layout, HWND window, UINT msg, WPARAM wparam
 
 HWND
 ALF_Layout_WidgetAtPos(ALFLayout *layout, UINT x, UINT y);
+
+void
+ALF_Layout_Invalidate(ALFLayout *layout, HWND window);
+
+BOOL
+ALF_Layout_Validate(ALFLayout *layout, HWND window);