From b0b0e97aa5a06b22768bb9c9ea5e8caf383d78a4 Mon Sep 17 00:00:00 2001
From: Jonas Kümmerlin <jonas@kuemmerlin.eu>
Date: Thu, 27 Dec 2018 20:50:39 +0100
Subject: split into multiple files

---
 alf/alfbutton.cpp | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 alf/alfbutton.cpp

(limited to 'alf/alfbutton.cpp')

diff --git a/alf/alfbutton.cpp b/alf/alfbutton.cpp
new file mode 100644
index 0000000..079da75
--- /dev/null
+++ b/alf/alfbutton.cpp
@@ -0,0 +1,95 @@
+#include "alfpriv.h"
+
+/* BUTTON */
+static LRESULT CALLBACK
+ALF__ButtonSubclassProc(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 hdc = GetDC(hwnd);
+        HFONT font = (HFONT)SendMessage(hwnd, WM_GETFONT, 0, 0);
+        HFONT oldFont = 0;
+        if (font)
+            oldFont = SelectFont(hdc, font);
+
+        // calc drawtext style
+        DWORD style = GetWindowLong(hwnd, GWL_STYLE);
+        UINT format = DT_LEFT | DT_EXPANDTABS | DT_CALCRECT;
+        if ((style & BS_MULTILINE) == 0)
+            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(hdc, textbuf, -1, &r, format);
+
+        HeapFree(GetProcessHeap(), 0, textbuf);
+
+        // TODO: calculate from system metrics
+        int padding = ALF_CentipointsToPixels(GetParent(hwnd), 525);
+
+        SIZE *pSize = (SIZE*)(void*)lParam;
+        if (pSize->cx < r.right - r.left + padding) {
+            pSize->cx = r.right - r.left + padding;
+        }
+        if (pSize->cy < r.bottom - r.top + padding) {
+            pSize->cy = r.bottom - r.top + padding;
+        }
+        if (pSize->cx < pSize->cy) {
+            pSize->cx = pSize->cy;
+        }
+
+        if (font)
+            SelectFont(hdc, oldFont);
+
+        ReleaseDC(hwnd, hdc);
+    }
+
+    return app->compatFn->DefSubclassProc(hwnd, uMsg, wParam, lParam);
+}
+
+HWND
+ALF_AddButton(HWND win, WORD id, UINT x, UINT y, const WCHAR *text)
+{
+    HWND hwndButton  = CreateWindowEx(0,
+                                      L"BUTTON",
+                                      text,
+                                      WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON | BS_MULTILINE,
+                                      0, 0, 100, 100,
+                                      win,
+                                      (HMENU)(int)id,
+                                      (HINSTANCE)GetWindowLongPtr(win, GWLP_HINSTANCE),
+                                      NULL);
+
+    ALFAPP app = ALF_ApplicationFromWindow(win);
+
+    app->compatFn->SetWindowSubclass(hwndButton, ALF__ButtonSubclassProc, 0, (DWORD_PTR)app);
+
+    ALFAddWidgetParams p;
+    ZeroMemory(&p, sizeof(p));
+    p.hwnd = hwndButton;
+    p.x = x;
+    p.y = y;
+    p.width = 5625;
+    p.height = 0;
+    p.flags = ALF_QUERYSIZE | ALF_MESSAGEFONT;
+
+    ALF_AddWidgetEx(win, &p);
+
+    return hwndButton;
+}
+
+
+void
+ALF_SetDefaultButton(HWND win, WORD id)
+{
+    SendMessage(win, DM_SETDEFID, (WPARAM)id, 0);
+}
+
-- 
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