diff options
Diffstat (limited to 'gfx/window_impl.cc')
| -rw-r--r-- | gfx/window_impl.cc | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/gfx/window_impl.cc b/gfx/window_impl.cc deleted file mode 100644 index b85f2f2..0000000 --- a/gfx/window_impl.cc +++ /dev/null @@ -1,230 +0,0 @@ -// 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 "gfx/window_impl.h" - -#include <list> - -#include "base/singleton.h" -#include "base/string_number_conversions.h" -#include "base/win_util.h" - -namespace gfx { - -static const DWORD kWindowDefaultChildStyle = - WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS; -static const DWORD kWindowDefaultStyle = WS_OVERLAPPEDWINDOW; -static const DWORD kWindowDefaultExStyle = 0; - -/////////////////////////////////////////////////////////////////////////////// -// WindowImpl class tracking. - -// Several external scripts rely explicitly on this base class name for -// acquiring the window handle and will break if this is modified! -// static -const wchar_t* const WindowImpl::kBaseClassName = L"Chrome_WidgetWin_"; - -// WindowImpl class information used for registering unique windows. -struct ClassInfo { - UINT style; - HBRUSH background; - - explicit ClassInfo(int style) - : style(style), - background(NULL) {} - - // Compares two ClassInfos. Returns true if all members match. - bool Equals(const ClassInfo& other) const { - return (other.style == style && other.background == background); - } -}; - -class ClassRegistrar { - public: - static ClassRegistrar* GetInstance() { - return Singleton<ClassRegistrar>::get(); - } - - ~ClassRegistrar() { - for (RegisteredClasses::iterator i = registered_classes_.begin(); - i != registered_classes_.end(); ++i) { - UnregisterClass(i->name.c_str(), NULL); - } - } - - // Puts the name for the class matching |class_info| in |class_name|, creating - // a new name if the class is not yet known. - // Returns true if this class was already known, false otherwise. - bool RetrieveClassName(const ClassInfo& class_info, std::wstring* name) { - for (RegisteredClasses::const_iterator i = registered_classes_.begin(); - i != registered_classes_.end(); ++i) { - if (class_info.Equals(i->info)) { - name->assign(i->name); - return true; - } - } - - name->assign(string16(WindowImpl::kBaseClassName) + - base::IntToString16(registered_count_++)); - return false; - } - - void RegisterClass(const ClassInfo& class_info, - const std::wstring& name, - ATOM atom) { - registered_classes_.push_back(RegisteredClass(class_info, name, atom)); - } - - private: - // Represents a registered window class. - struct RegisteredClass { - RegisteredClass(const ClassInfo& info, - const std::wstring& name, - ATOM atom) - : info(info), - name(name), - atom(atom) { - } - - // Info used to create the class. - ClassInfo info; - - // The name given to the window. - std::wstring name; - - // The ATOM returned from creating the window. - ATOM atom; - }; - - ClassRegistrar() : registered_count_(0) { } - friend struct DefaultSingletonTraits<ClassRegistrar>; - - typedef std::list<RegisteredClass> RegisteredClasses; - RegisteredClasses registered_classes_; - - // Counter of how many classes have been registered so far. - int registered_count_; - - DISALLOW_COPY_AND_ASSIGN(ClassRegistrar); -}; - -/////////////////////////////////////////////////////////////////////////////// -// WindowImpl, public - -WindowImpl::WindowImpl() - : window_style_(0), - window_ex_style_(kWindowDefaultExStyle), - class_style_(CS_DBLCLKS), - hwnd_(NULL) { -} - -WindowImpl::~WindowImpl() { -} - -void WindowImpl::Init(HWND parent, const gfx::Rect& bounds) { - if (window_style_ == 0) - window_style_ = parent ? kWindowDefaultChildStyle : kWindowDefaultStyle; - - // Ensures the parent we have been passed is valid, otherwise CreateWindowEx - // will fail. - if (parent && !::IsWindow(parent)) { - NOTREACHED() << "invalid parent window specified."; - parent = NULL; - } - - int x, y, width, height; - if (bounds.IsEmpty()) { - x = y = width = height = CW_USEDEFAULT; - } else { - x = bounds.x(); - y = bounds.y(); - width = bounds.width(); - height = bounds.height(); - } - - hwnd_ = CreateWindowEx(window_ex_style_, GetWindowClassName().c_str(), NULL, - window_style_, x, y, width, height, - parent, NULL, NULL, this); - DCHECK(hwnd_); - - // The window procedure should have set the data for us. - DCHECK(win_util::GetWindowUserData(hwnd_) == this); -} - -HICON WindowImpl::GetDefaultWindowIcon() const { - return NULL; -} - -// static -bool WindowImpl::IsWindowImpl(HWND hwnd) { - wchar_t tmp[128]; - if (!::GetClassName(hwnd, tmp, 128)) - return false; - - std::wstring class_name(tmp); - return class_name.find(kBaseClassName) == 0; -} - -LRESULT WindowImpl::OnWndProc(UINT message, WPARAM w_param, LPARAM l_param) { - LRESULT result = 0; - - // Handle the message if it's in our message map; otherwise, let the system - // handle it. - if (!ProcessWindowMessage(hwnd_, message, w_param, l_param, result)) - result = DefWindowProc(hwnd_, message, w_param, l_param); - - return result; -} - -// static -LRESULT CALLBACK WindowImpl::WndProc(HWND hwnd, - UINT message, - WPARAM w_param, - LPARAM l_param) { - if (message == WM_NCCREATE) { - CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(l_param); - WindowImpl* window = reinterpret_cast<WindowImpl*>(cs->lpCreateParams); - DCHECK(window); - win_util::SetWindowUserData(hwnd, window); - window->hwnd_ = hwnd; - return TRUE; - } - - WindowImpl* window = reinterpret_cast<WindowImpl*>( - win_util::GetWindowUserData(hwnd)); - if (!window) - return 0; - - return window->OnWndProc(message, w_param, l_param); -} - -std::wstring WindowImpl::GetWindowClassName() { - ClassInfo class_info(initial_class_style()); - std::wstring name; - if (ClassRegistrar::GetInstance()->RetrieveClassName(class_info, &name)) - return name; - - // No class found, need to register one. - WNDCLASSEX class_ex; - class_ex.cbSize = sizeof(WNDCLASSEX); - class_ex.style = class_info.style; - class_ex.lpfnWndProc = &WindowImpl::WndProc; - class_ex.cbClsExtra = 0; - class_ex.cbWndExtra = 0; - class_ex.hInstance = NULL; - class_ex.hIcon = GetDefaultWindowIcon(); - class_ex.hCursor = LoadCursor(NULL, IDC_ARROW); - class_ex.hbrBackground = reinterpret_cast<HBRUSH>(class_info.background + 1); - class_ex.lpszMenuName = NULL; - class_ex.lpszClassName = name.c_str(); - class_ex.hIconSm = class_ex.hIcon; - ATOM atom = RegisterClassEx(&class_ex); - DCHECK(atom); - - ClassRegistrar::GetInstance()->RegisterClass(class_info, name, atom); - - return name; -} - -} // namespace gfx |