fixup transparent background work and add test in widgetfactory

Win32s bites once again with its 16bit WPARAM

1 files changed, 16 insertions, 0 deletions

diff --git a/alf/alf.h b/alf/alf.h
index 4102a1e..bd8ca0e 100644
--- a/alf/alf.h
+++ b/alf/alf.h
@@ -23,6 +23,7 @@ typedef struct {
     LRESULT (*notify)(void * /*closure*/, HWND /*window*/, WPARAM /*sourceid*/, NMHDR *);
     BOOL (*pretranslatemessage)(void * /*closure*/, HWND /*window*/, MSG * /*message*/);
     void (*paint)(void * /*closure*/, HWND, HDC, RECT *);
+    void (*windowposchanged)(void * /*closure*/, HWND, WINDOWPOS *);
 } ALFWindowVTable;
 
 typedef struct {
@@ -45,6 +46,8 @@ typedef struct {
 #define ALF_LAYOUT_CUSTOMPOS        0x20
 #define ALF_LAYOUT_SIZE_PX          0x40
 #define ALF_LAYOUT_INHERITBGCOLOR   0x80
+#define ALF_LAYOUT_TRANSPARENTBG   0x100
+#define ALF_LAYOUT_SENDBGCHANGE    0x200
 
 
 // label style flags
@@ -72,6 +75,7 @@ typedef struct {
 #define ALF_WM_GETMODALRESULT   (ALF_WM__BASE + 8)
 #define ALF_WM_CENTIPOINTTOPX   (ALF_WM__BASE + 9)
 #define ALF_WM_SETFOCUS         (ALF_WM__BASE + 10)
+#define ALF_WM_BACKGROUNDCHANGE (ALF_WM__BASE + 11)
 #define ALF_WM_APPLYSIZE        (ALF_WM__BASE + 12)
 #define ALF_WM_SETBGCOLOR       (ALF_WM__BASE + 13)
 #define ALF_WM_GETBGCOLOR       (ALF_WM__BASE + 14)
@@ -190,6 +194,12 @@ ALF_WidgetHwndById(HWND win, WORD id);
 void
 ALF_InvalidateLayout(HWND win);
 
+// Sends ALF_WM_BACKGROUNDCHANGE to notify the window of a changed background
+// Only useful when you have overridden the window or panel pain() vfunc
+// when you use solid background colors, ALF will handle this automatically
+void
+ALF_InvalidateBackground(HWND win);
+
 // Recalculates the window's DPI and all fonts and applies them to child widgets.
 // ALF does this automatically on a DPI or settings change so you shouldn't have
 // to call ALF_UpdateFonts().
@@ -197,6 +207,12 @@ void
 ALF_UpdateFonts(HWND win);
 
 void
+ALF_SetBackgroundColor(HWND win, ALFColor color);
+
+ALFColor
+ALF_GetBackgroundColor(HWND win);
+
+void
 ALF_ResizeWindow(HWND win, int cptWidth, int cptHeight);
 
 void