Make Chromium windows not hide auto-hide taskbars, take 2....

chrome/common/win_util.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/win_util.h"
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <commdlg.h>
 #include <dwmapi.h>
@@ skipping 10 matching lines @@
 #include "base/win_util.h"
 #include "chrome/common/l10n_util.h"
 #include "grit/generated_resources.h"
 #include "net/base/mime_util.h"
 
 // Ensure that we pick up this link library.
 #pragma comment(lib, "dwmapi.lib")
 
 namespace win_util {
 
+const int kAutoHideTaskbarThicknessPx = 2;
+
 namespace {
 
 // Enforce visible dialog box.
 UINT_PTR CALLBACK SaveAsDialogHook(HWND dialog, UINT message,
                                    WPARAM wparam, LPARAM lparam) {
   static const UINT kPrivateMessage = 0x2F3F;
   switch (message) {
     case WM_INITDIALOG: {
       // Do nothing here. Just post a message to defer actual processing.
       PostMessage(dialog, kPrivateMessage, 0, 0);
@@ skipping 576 matching lines @@
       SetWindowPos(window, 0, window_bounds.left, window_bounds.top,
                    window_bounds.right - window_bounds.left,
                    window_bounds.bottom - window_bounds.top,
                    SWP_NOACTIVATE | SWP_NOZORDER);
     }  // else case, AdjustWindowToFit set the bounds for us.
   } else {
     NOTREACHED() << "Unable to adjust window to fit";
   }
 }
 
+bool EdgeHasAutoHideTaskbar(UINT edge, HMONITOR monitor) {
+  APPBARDATA taskbar_data = { 0 };
+  taskbar_data.cbSize = sizeof APPBARDATA;
+  taskbar_data.uEdge = edge;
+  HWND taskbar = reinterpret_cast<HWND>(SHAppBarMessage(ABM_GETAUTOHIDEBAR,
+                                                        &taskbar_data));
+  return ::IsWindow(taskbar) &&
+      (MonitorFromWindow(taskbar, MONITOR_DEFAULTTONEAREST) == monitor);
+}
+
 HANDLE GetSectionFromProcess(HANDLE section, HANDLE process, bool read_only) {
   HANDLE valid_section = NULL;
   DWORD access = STANDARD_RIGHTS_REQUIRED | FILE_MAP_READ;
   if (!read_only)
     access |= FILE_MAP_WRITE;
   DuplicateHandle(process, section, GetCurrentProcess(), &valid_section, access,
                   FALSE, 0);
   return valid_section;
 }
 
@@ skipping 260 matching lines @@
 }
 
 ChromeFont GetWindowTitleFont() {
   NONCLIENTMETRICS ncm;
   win_util::GetNonClientMetrics(&ncm);
   ScopedHFONT caption_font(CreateFontIndirect(&(ncm.lfCaptionFont)));
   return ChromeFont::CreateFont(caption_font);
 }
 
 }  // namespace win_util