зеркало из https://github.com/mozilla/gecko-dev.git
128 строки
2.7 KiB
C++
128 строки
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ia2AccessibleComponent.h"
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#include "AccessibleComponent_i.c"
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#include "AccessibleWrap.h"
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#include "States.h"
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#include "IUnknownImpl.h"
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#include "nsIFrame.h"
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using namespace mozilla::a11y;
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// IUnknown
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STDMETHODIMP
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ia2AccessibleComponent::QueryInterface(REFIID iid, void** ppv)
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{
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if (!ppv)
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return E_INVALIDARG;
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*ppv = nullptr;
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if (IID_IAccessibleComponent == iid) {
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*ppv = static_cast<IAccessibleComponent*>(this);
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(reinterpret_cast<IUnknown*>(*ppv))->AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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// IAccessibleComponent
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STDMETHODIMP
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ia2AccessibleComponent::get_locationInParent(long* aX, long* aY)
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{
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A11Y_TRYBLOCK_BEGIN
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if (!aX || !aY)
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return E_INVALIDARG;
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*aX = 0;
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*aY = 0;
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AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);
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if (acc->IsDefunct())
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return CO_E_OBJNOTCONNECTED;
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// If the object is not on any screen the returned position is (0,0).
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uint64_t state = acc->State();
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if (state & states::INVISIBLE)
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return S_OK;
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nsIntRect rect = acc->Bounds();
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// The coordinates of the returned position are relative to this object's
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// parent or relative to the screen on which this object is rendered if it
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// has no parent.
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if (!acc->Parent()) {
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*aX = rect.x;
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*aY = rect.y;
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return S_OK;
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}
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// The coordinates of the bounding box are given relative to the parent's
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// coordinate system.
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nsIntRect parentRect = acc->Parent()->Bounds();
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*aX = rect.x - parentRect.x;
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*aY = rect.y - parentRect.y;
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return S_OK;
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A11Y_TRYBLOCK_END
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}
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STDMETHODIMP
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ia2AccessibleComponent::get_foreground(IA2Color* aForeground)
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{
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A11Y_TRYBLOCK_BEGIN
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if (!aForeground)
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return E_INVALIDARG;
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*aForeground = 0;
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AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);
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if (acc->IsDefunct())
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return CO_E_OBJNOTCONNECTED;
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nsIFrame* frame = acc->GetFrame();
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if (frame)
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*aForeground = frame->StyleColor()->mColor;
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return S_OK;
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A11Y_TRYBLOCK_END
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}
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STDMETHODIMP
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ia2AccessibleComponent::get_background(IA2Color* aBackground)
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{
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A11Y_TRYBLOCK_BEGIN
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if (!aBackground)
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return E_INVALIDARG;
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*aBackground = 0;
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AccessibleWrap* acc = static_cast<AccessibleWrap*>(this);
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if (acc->IsDefunct())
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return CO_E_OBJNOTCONNECTED;
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nsIFrame* frame = acc->GetFrame();
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if (frame)
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*aBackground = frame->StyleBackground()->mBackgroundColor;
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return S_OK;
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A11Y_TRYBLOCK_END
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}
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