split into multiple files

1 files changed, 83 insertions, 0 deletions

diff --git a/alf/alflabel.cpp b/alf/alflabel.cpp
new file mode 100644
index 0000000..e9ae550
--- /dev/null
+++ b/alf/alflabel.cpp
@@ -0,0 +1,83 @@
+#include "alfpriv.h"
+
+/* LABEL */
+
+static LRESULT CALLBACK
+ALF__LabelSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
+{
+    (void)uIdSubclass;
+    (void)dwRefData;
+
+    ALFAPP app = (ALFAPP)dwRefData;
+
+    if (uMsg == ALF_WM_QUERYSIZE) {
+        HDC hdcLabel = GetDC(hwnd);
+        HFONT font = (HFONT)SendMessage(hwnd, WM_GETFONT, 0, 0);
+        HFONT oldFont = 0;
+        if (font)
+            oldFont = SelectFont(hdcLabel, font);
+
+        // calc drawtext style
+        DWORD style = GetWindowLong(hwnd, GWL_STYLE);
+        UINT format = DT_LEFT | DT_EXPANDTABS | DT_CALCRECT;
+        if (style & SS_NOPREFIX)
+            format |= DT_NOPREFIX;
+        if (style & SS_EDITCONTROL)
+            format |= DT_EDITCONTROL;
+        if (style & SS_ENDELLIPSIS || style & SS_PATHELLIPSIS || style & SS_WORDELLIPSIS)
+            format |= DT_SINGLELINE;
+
+        RECT r = { 0, 0, 100, 100 };
+
+        int textlen = GetWindowTextLength(hwnd);
+        TCHAR *textbuf = (TCHAR*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY|HEAP_GENERATE_EXCEPTIONS, (textlen + 1)*sizeof(TCHAR));
+        GetWindowText(hwnd, textbuf, textlen+1);
+
+        DrawText(hdcLabel, textbuf, -1, &r, format);
+
+        HeapFree(GetProcessHeap(), 0, textbuf);
+
+        SIZE *pSize = (SIZE*)(void*)lParam;
+        if (pSize->cx == 0)
+            pSize->cx = r.right - r.left;
+        if (pSize->cy == 0)
+            pSize->cy = r.bottom - r.top;
+
+        if (font)
+            SelectFont(hdcLabel, oldFont);
+
+        ReleaseDC(hwnd, hdcLabel);
+    }
+
+    return app->compatFn->DefSubclassProc(hwnd, uMsg, wParam, lParam);
+}
+
+HWND
+ALF_AddLabel(HWND win, WORD id, UINT x, UINT y, const WCHAR *text)
+{
+    HWND hwndLabel = CreateWindow(L"STATIC",
+                                  text,
+                                  WS_CHILD | WS_VISIBLE | SS_LEFTNOWORDWRAP,
+                                  0, 0, 100, 100,
+                                  win,
+                                  (HMENU)(int)id,
+                                  (HINSTANCE)GetWindowLongPtr(win, GWLP_HINSTANCE),
+                                  NULL);
+
+    ALFAPP app = ALF_ApplicationFromWindow(win);
+    app->compatFn->SetWindowSubclass(hwndLabel, ALF__LabelSubclassProc, 0, (DWORD_PTR)app);
+
+    ALFAddWidgetParams p;
+    ZeroMemory(&p, sizeof(p));
+    p.hwnd = hwndLabel;
+    p.x = x;
+    p.y = y;
+    p.width = 0;
+    p.height = 0;
+    p.flags = ALF_QUERYSIZE | ALF_MESSAGEFONT;
+    p.margins[0] = 300; // TODO: pixel perfect margins from system metrics
+
+    ALF_AddWidgetEx(win, &p);
+
+    return hwndLabel;
+}