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// Copyright (c) 2012 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 "ui/base/win/accessibility_misc_utils.h"
#include "base/logging.h"
#include "base/win/scoped_gdi_object.h"
#include "ui/base/win/atl_module.h"
namespace base {
namespace win {
void SetInvisibleSystemCaretRect(HWND hwnd, const gfx::Rect& caret_rect) {
// Create an invisible bitmap.
base::win::ScopedGDIObject<HBITMAP> caret_bitmap(
CreateBitmap(1, caret_rect.height(), 1, 1, NULL));
// This destroys the previous caret (no matter what window it belonged to)
// and creates a new one owned by this window.
if (!CreateCaret(hwnd, caret_bitmap, 1, caret_rect.height()))
return;
ShowCaret(hwnd);
RECT window_rect;
GetWindowRect(hwnd, &window_rect);
SetCaretPos(caret_rect.x() - window_rect.left + 2,
caret_rect.y() - window_rect.top + 2);
}
// UIA TextProvider implementation.
UIATextProvider::UIATextProvider()
: editable_(false) {}
// static
bool UIATextProvider::CreateTextProvider(bool editable, IUnknown** provider) {
// Make sure ATL is initialized in this module.
ui::win::CreateATLModuleIfNeeded();
CComObject<UIATextProvider>* text_provider = NULL;
HRESULT hr = CComObject<UIATextProvider>::CreateInstance(&text_provider);
if (SUCCEEDED(hr)) {
DCHECK(text_provider);
text_provider->set_editable(editable);
text_provider->AddRef();
*provider = static_cast<ITextProvider*>(text_provider);
return true;
}
return false;
}
STDMETHODIMP UIATextProvider::get_IsReadOnly(BOOL* read_only) {
*read_only = !editable_;
return S_OK;
}
} // namespace win
} // namespace base
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