Move UI-relevant Windows files to ui/base.

app/win/hwnd_util.cc

-// Copyright (c) 2010 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 "app/win/hwnd_util.h"
-
-#include <dwmapi.h>
-
-#include "base/string_util.h"
-#include "base/win/windows_version.h"
-#include "gfx/rect.h"
-#include "gfx/size.h"
-
-#pragma comment(lib, "dwmapi.lib")
-
-namespace app {
-namespace win {
-
-namespace {
-
-// Adjust the window to fit, returning true if the window was resized or moved.
-bool AdjustWindowToFit(HWND hwnd, const RECT& bounds) {
-  // Get the monitor.
-  HMONITOR hmon = MonitorFromRect(&bounds, MONITOR_DEFAULTTONEAREST);
-  if (!hmon) {
-    NOTREACHED() << "Unable to find default monitor";
-    // No monitor available.
-    return false;
-  }
-
-  MONITORINFO mi;
-  mi.cbSize = sizeof(mi);
-  GetMonitorInfo(hmon, &mi);
-  gfx::Rect window_rect(bounds);
-  gfx::Rect monitor_rect(mi.rcWork);
-  gfx::Rect new_window_rect = window_rect.AdjustToFit(monitor_rect);
-  if (!new_window_rect.Equals(window_rect)) {
-    // Window doesn't fit on monitor, move and possibly resize.
-    SetWindowPos(hwnd, 0, new_window_rect.x(), new_window_rect.y(),
-                 new_window_rect.width(), new_window_rect.height(),
-                 SWP_NOACTIVATE | SWP_NOZORDER);
-    return true;
-  } else {
-    return false;
-  }
-}
-
-}  // namespace
-
-string16 GetClassName(HWND window) {
-  // GetClassNameW will return a truncated result (properly null terminated) if
-  // the given buffer is not large enough.  So, it is not possible to determine
-  // that we got the entire class name if the result is exactly equal to the
-  // size of the buffer minus one.
-  DWORD buffer_size = MAX_PATH;
-  while (true) {
-    std::wstring output;
-    DWORD size_ret =
-        GetClassNameW(window, WriteInto(&output, buffer_size), buffer_size);
-    if (size_ret == 0)
-      break;
-    if (size_ret < (buffer_size - 1)) {
-      output.resize(size_ret);
-      return output;
-    }
-    buffer_size *= 2;
-  }
-  return std::wstring();  // error
-}
-
-#pragma warning(push)
-#pragma warning(disable:4312 4244)
-
-WNDPROC SetWindowProc(HWND hwnd, WNDPROC proc) {
-  // The reason we don't return the SetwindowLongPtr() value is that it returns
-  // the orignal window procedure and not the current one. I don't know if it is
-  // a bug or an intended feature.
-  WNDPROC oldwindow_proc =
-      reinterpret_cast<WNDPROC>(GetWindowLongPtr(hwnd, GWLP_WNDPROC));
-  SetWindowLongPtr(hwnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(proc));
-  return oldwindow_proc;
-}
-
-void* SetWindowUserData(HWND hwnd, void* user_data) {
-  return
-      reinterpret_cast<void*>(SetWindowLongPtr(hwnd, GWLP_USERDATA,
-          reinterpret_cast<LONG_PTR>(user_data)));
-}
-
-void* GetWindowUserData(HWND hwnd) {
-  return reinterpret_cast<void*>(GetWindowLongPtr(hwnd, GWLP_USERDATA));
-}
-
-#pragma warning(pop)
-
-bool DoesWindowBelongToActiveWindow(HWND window) {
-  DCHECK(window);
-  HWND top_window = ::GetAncestor(window, GA_ROOT);
-  if (!top_window)
-    return false;
-
-  HWND active_top_window = ::GetAncestor(::GetForegroundWindow(), GA_ROOT);
-  return (top_window == active_top_window);
-}
-
-void CenterAndSizeWindow(HWND parent,
-                         HWND window,
-                         const gfx::Size& pref,
-                         bool pref_is_client) {
-  DCHECK(window && pref.width() > 0 && pref.height() > 0);
-
-  // Calculate the ideal bounds.
-  RECT window_bounds;
-  RECT center_bounds = {0};
-  if (parent) {
-    // If there is a parent, center over the parents bounds.
-    ::GetWindowRect(parent, &center_bounds);
-  } else {
-    // No parent. Center over the monitor the window is on.
-    HMONITOR monitor = MonitorFromWindow(window, MONITOR_DEFAULTTONEAREST);
-    if (monitor) {
-      MONITORINFO mi = {0};
-      mi.cbSize = sizeof(mi);
-      GetMonitorInfo(monitor, &mi);
-      center_bounds = mi.rcWork;
-    } else {
-      NOTREACHED() << "Unable to get default monitor";
-    }
-  }
-  window_bounds.left = center_bounds.left +
-      (center_bounds.right - center_bounds.left - pref.width()) / 2;
-  window_bounds.right = window_bounds.left + pref.width();
-  window_bounds.top = center_bounds.top +
-      (center_bounds.bottom - center_bounds.top - pref.height()) / 2;
-  window_bounds.bottom = window_bounds.top + pref.height();
-
-  // If we're centering a child window, we are positioning in client
-  // coordinates, and as such we need to offset the target rectangle by the
-  // position of the parent window.
-  if (::GetWindowLong(window, GWL_STYLE) & WS_CHILD) {
-    DCHECK(parent && ::GetParent(window) == parent);
-    POINT topleft = { window_bounds.left, window_bounds.top };
-    ::MapWindowPoints(HWND_DESKTOP, parent, &topleft, 1);
-    window_bounds.left = topleft.x;
-    window_bounds.top = topleft.y;
-    window_bounds.right = window_bounds.left + pref.width();
-    window_bounds.bottom = window_bounds.top + pref.height();
-  }
-
-  // Get the WINDOWINFO for window. We need the style to calculate the size
-  // for the window.
-  WINDOWINFO win_info = {0};
-  win_info.cbSize = sizeof(WINDOWINFO);
-  GetWindowInfo(window, &win_info);
-
-  // Calculate the window size needed for the content size.
-
-  if (!pref_is_client ||
-      AdjustWindowRectEx(&window_bounds, win_info.dwStyle, FALSE,
-                         win_info.dwExStyle)) {
-    if (!AdjustWindowToFit(window, window_bounds)) {
-      // The window fits, reset the bounds.
-      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 ShouldUseVistaFrame() {
-  if (base::win::GetVersion() < base::win::VERSION_VISTA)
-    return false;
-  // If composition is not enabled, we behave like on XP.
-  BOOL f;
-  DwmIsCompositionEnabled(&f);
-  return !!f;
-}
-
-}  // namespace win
-}  // namespace app