widget layout improvements

1 files changed, 158 insertions, 6 deletions

diff --git a/alf/alf.cpp b/alf/alf.cpp
index 981d1e7..6936436 100644
--- a/alf/alf.cpp
+++ b/alf/alf.cpp
@@ -274,7 +274,7 @@ ALF_ApplyLayout(HWND hwnd, ALFWindowPriv *win)
 }
 
 static void
-ALF_InternalAddWidget(HWND hwnd, ALFWindowPriv *priv, ALFAddWidgetParams *params)
+ALF_InternalAddWidget(HWND hwnd, ALFWindowPriv *priv, ALFWidgetLayoutParams *params)
 {
     ALFWidgetPriv *w = (ALFWidgetPriv*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY|HEAP_GENERATE_EXCEPTIONS, sizeof(ALFWidgetPriv));
     w->hwnd = params->hwnd;
@@ -297,6 +297,64 @@ ALF_InternalAddWidget(HWND hwnd, ALFWindowPriv *priv, ALFAddWidgetParams *params
     ALF_UpdateFontForWidget(priv, w);
 }
 
+static BOOL
+ALF_InternalSetLayoutParams(ALFWindowPriv *priv, HWND widget, const ALFWidgetLayoutParams *params)
+{
+    ALF_FOR_LIST(ALFWidgetPriv, list, &priv->widgets, w) {
+        if (w->hwnd == widget) {
+            w->hwnd = params->hwnd;
+            w->x = params->x;
+            w->y = params->y;
+            w->cptWidth = params->width;
+            w->cptHeight = params->height;
+            w->flags = params->flags;
+            w->cptMarginTop = params->margins[0];
+            w->cptMarginRight = params->margins[1];
+            w->cptMarginBottom = params->margins[2];
+            w->cptMarginLeft = params->margins[3];
+
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static BOOL
+ALF_InternalGetLayoutParams(ALFWindowPriv *priv, HWND widget, ALFWidgetLayoutParams *params)
+{
+    ALF_FOR_LIST(ALFWidgetPriv, list, &priv->widgets, w) {
+        if (w->hwnd == widget) {
+            params->hwnd = w->hwnd;
+            params->x = w->x;
+            params->y = w->y;
+            params->width = w->cptWidth;
+            params->height = w->cptHeight;
+            params->flags = w->flags;
+            params->margins[0] = w->cptMarginTop;
+            params->margins[1] = w->cptMarginRight;
+            params->margins[2] = w->cptMarginBottom;
+            params->margins[3] = w->cptMarginLeft;
+
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static HWND
+ALF_InternalGetWidgetAtPos(ALFWindowPriv *priv, UINT x, UINT y)
+{
+    ALF_FOR_LIST(ALFWidgetPriv, list, &priv->widgets, w) {
+        if (w->x == x && w->y == y) {
+            return w->hwnd;
+        }
+    }
+
+    return NULL;
+}
+
 static void
 ALF_ApplyFocus(HWND hwnd, ALFWindowPriv *priv, BOOL restoringFocus)
 {
@@ -344,10 +402,22 @@ ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
     }
 
     if (msg == ALF_WM_ADDWIDGET) {
-        ALF_InternalAddWidget(hwnd, priv, (ALFAddWidgetParams *)lparam);
+        ALF_InternalAddWidget(hwnd, priv, (ALFWidgetLayoutParams *)lparam);
         return 0;
     }
 
+    if (msg == ALF_WM_GETLAYOUTPARAMS) {
+        return (LRESULT)ALF_InternalGetLayoutParams(priv, (HWND)wparam, (ALFWidgetLayoutParams *)lparam);
+    }
+
+    if (msg == ALF_WM_SETLAYOUTPARAMS) {
+        return (LRESULT)ALF_InternalSetLayoutParams(priv, (HWND)wparam, (const ALFWidgetLayoutParams *)lparam);
+    }
+
+    if (msg == ALF_WM_GETWIDGETATPOS) {
+        return (LRESULT)ALF_InternalGetWidgetAtPos(priv, ((UINT*)lparam)[0], ((UINT*)lparam)[1]);
+    }
+
     if (msg == ALF_WM_SETFOCUS) {
         priv->hwndFocus = (HWND)lparam;
         ALF_ApplyFocus(hwnd, priv, FALSE);
@@ -485,7 +555,7 @@ ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 void
 ALF_AddWidget(HWND win, UINT x, UINT y, HWND widget, UINT minWidth, UINT minHeight, DWORD flags)
 {
-    ALFAddWidgetParams params;
+    ALFWidgetLayoutParams params;
     ZeroMemory(&params, sizeof(params));
     params.hwnd = widget;
     params.x = x;
@@ -496,10 +566,9 @@ ALF_AddWidget(HWND win, UINT x, UINT y, HWND widget, UINT minWidth, UINT minHeig
     ALF_AddWidgetEx(win, &params);
 }
 
-void
-ALF_AddWidgetEx(HWND win, const ALFAddWidgetParams *p)
+void ALF_AddWidgetEx(HWND win, const ALFWidgetLayoutParams* params)
 {
-    SendMessage(win, ALF_WM_ADDWIDGET, 0, (LPARAM)p);
+    SendMessage(win, ALF_WM_ADDWIDGET, 0, (LPARAM)params);
 }
 
 static LRESULT CALLBACK
@@ -787,3 +856,86 @@ ALF_WidgetText(HWND parent, WORD id)
 
     return NULL;
 }
+
+DWORD
+ALF_WidgetLayoutFlags(HWND parent, HWND widget)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        return p.flags;
+    } else {
+        return 0;
+    }
+}
+
+BOOL
+ALF_SetWidgetLayoutFlags(HWND parent, HWND widget, DWORD flags)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        p.flags = flags;
+        return SendMessage(parent, ALF_WM_SETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p);
+    }
+
+    return FALSE;
+}
+
+BOOL
+ALF_WidgetLayoutPosition(HWND parent, HWND widget, UINT *pX, UINT *pY)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        *pX = p.x;
+        *pY = p.y;
+        return TRUE;
+    } else {
+        return FALSE;
+    }
+}
+
+BOOL
+ALF_SetWidgetLayoutPosition(HWND parent, HWND widget, UINT x, UINT y)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        p.x = x;
+        p.y = y;
+        return SendMessage(parent, ALF_WM_SETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p);
+    }
+
+    return FALSE;
+}
+
+BOOL
+ALF_WidgetLayoutSize(HWND parent, HWND widget, UINT *pCptWidth, UINT *pCptHeight)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        *pCptWidth  = p.width;
+        *pCptHeight = p.height;
+        return TRUE;
+    } else {
+        return FALSE;
+    }
+}
+
+BOOL
+ALF_SetWidgetLayoutSize(HWND parent, HWND widget, UINT cptWidth, UINT cptHeight)
+{
+    ALFWidgetLayoutParams p;
+    if (SendMessage(parent, ALF_WM_GETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p)) {
+        p.width  = cptWidth;
+        p.height = cptHeight;
+        return SendMessage(parent, ALF_WM_SETLAYOUTPARAMS, (WPARAM)widget, (LPARAM)&p);
+    }
+
+    return FALSE;
+}
+
+HWND
+ALF_WidgetAtLayoutPosition(HWND parent, UINT x, UINT y)
+{
+    UINT xy[2] = { x, y };
+
+    return (HWND)SendMessage(parent, ALF_WM_GETWIDGETATPOS, 0, (LPARAM)&xy);
+}