fixup panel support

1 files changed, 110 insertions, 0 deletions

diff --git a/alf/alfpanel.cpp b/alf/alfpanel.cpp
new file mode 100644
index 0000000..74db788
--- /dev/null
+++ b/alf/alfpanel.cpp
@@ -0,0 +1,110 @@
+#include "alfpriv.h"
+
+typedef struct {
+    ALFAPP    app;
+    ALFLayout layout;
+} ALFPanelPriv;
+
+static void
+ALF_Panel_IntializePriv(ALFPanelPriv *priv, ALFAPP app)
+{
+    priv->app = app;
+    ALF_Layout_Init(&priv->layout);
+}
+
+static void
+ALF_Panel_ClearPriv(ALFPanelPriv *priv)
+{
+    ALF_Layout_Clear(&priv->layout);
+}
+
+static LRESULT WINAPI
+ALF__PanelWindowProc(HWND window, UINT msg, WPARAM wparam, LPARAM lparam)
+{
+    if (msg == WM_NCCREATE) {
+        ALFPanelPriv *p = (ALFPanelPriv*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ALFPanelPriv));
+
+        ALFAPP app = (ALFAPP)(((CREATESTRUCT*)lparam)->lpCreateParams);
+        ALF_Panel_IntializePriv(p, app);
+
+        SetWindowLongPtr(window, 0, (LONG_PTR)p);
+    }
+
+    ALFPanelPriv *priv = (ALFPanelPriv *)GetWindowLongPtr(window, 0);
+
+    if (msg == WM_NCDESTROY) {
+        ALF_Panel_ClearPriv(priv);
+        HeapFree(GetProcessHeap(), 0, priv);
+        SetWindowLongPtr(window, 0, 0);
+    }
+
+    if (ALF_ShouldMessageBubble(window, msg, wparam, lparam))
+        return SendMessage(GetParent(window), msg, wparam, lparam);
+
+    if (msg == WM_SIZE) {
+        ALF_Layout_Apply(&priv->layout, window);
+    }
+
+    LRESULT ret = 0;
+    if (ALF_Layout_HandleMessage(&priv->layout, window, msg, wparam, lparam, &ret))
+        return ret;
+
+    return DefWindowProc(window, msg, wparam, lparam);
+}
+
+void
+ALF_RegisterPanelClass(ALFAPP app)
+{
+    WNDCLASS cls;
+    ZeroMemory(&cls, sizeof(cls));
+
+    TCHAR  classNameBuf[256];
+    ALF_BuildRandomClassName(app, TEXT("ALFPanel."), classNameBuf);
+
+    cls.hInstance = app->hInstance;
+    cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
+    if (LOBYTE(LOWORD(GetVersion())) >= 4) {
+        cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
+    } else {
+        // NT 3.x has white dialog backgrounds
+        cls.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
+    }
+    cls.lpszClassName = classNameBuf;
+    cls.cbWndExtra = sizeof(void*);
+    cls.lpfnWndProc = ALF__PanelWindowProc;
+
+    ATOM classatom = RegisterClass(&cls);
+    if (!classatom)
+        MessageBox(NULL, TEXT("FATAL: Could not register Combo class"), NULL, MB_OK);
+
+    app->panelClass = MAKEINTATOM(classatom);
+}
+
+HWND
+ALF_AddPanel(HWND parent, WORD id, UINT x, UINT y)
+{
+    ALFAPP app = ALF_ApplicationFromWindow(parent);
+
+    HWND hwndPanel = CreateWindowEx(WS_EX_CONTROLPARENT,
+                                    app->panelClass,
+                                    TEXT(""),
+                                    WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
+                                    0, 0, 0, 0,
+                                    parent,
+                                    (HMENU)(int)id,
+                                    (HINSTANCE)GetWindowLongPtr(parent, GWLP_HINSTANCE),
+                                    (void*)app);
+
+    ALFWidgetLayoutParams p;
+    ZeroMemory(&p, sizeof(p));
+    p.hwnd = hwndPanel;
+    p.x = x;
+    p.y = y;
+    p.width = 0;
+    p.height = 0;
+    p.flags = ALF_QUERYSIZE | ALF_SENDAPPLYFONTS;
+
+    ALF_AddWidgetEx(parent, &p);
+
+    return hwndPanel;
+}