зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
3.3 KiB
C++
119 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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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 "InterfaceInitFuncs.h"
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#include "AccessibleWrap.h"
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#include "nsMai.h"
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#include "ProxyAccessible.h"
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#include "mozilla/FloatingPoint.h"
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#include "mozilla/Likely.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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extern "C" {
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static void getCurrentValueCB(AtkValue* obj, GValue* value) {
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ProxyAccessible* proxy = nullptr;
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AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
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if (!accWrap) {
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proxy = GetProxy(ATK_OBJECT(obj));
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if (!proxy) {
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return;
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}
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}
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memset(value, 0, sizeof(GValue));
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double accValue = accWrap ? accWrap->CurValue() : proxy->CurValue();
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if (IsNaN(accValue)) return;
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g_value_init(value, G_TYPE_DOUBLE);
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g_value_set_double(value, accValue);
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}
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static void getMaximumValueCB(AtkValue* obj, GValue* value) {
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ProxyAccessible* proxy = nullptr;
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AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
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if (!accWrap) {
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proxy = GetProxy(ATK_OBJECT(obj));
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if (!proxy) {
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return;
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}
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}
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memset(value, 0, sizeof(GValue));
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double accValue = accWrap ? accWrap->MaxValue() : proxy->MaxValue();
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if (IsNaN(accValue)) return;
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g_value_init(value, G_TYPE_DOUBLE);
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g_value_set_double(value, accValue);
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}
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static void getMinimumValueCB(AtkValue* obj, GValue* value) {
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ProxyAccessible* proxy = nullptr;
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AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
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if (!accWrap) {
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proxy = GetProxy(ATK_OBJECT(obj));
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if (!proxy) {
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return;
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}
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}
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memset(value, 0, sizeof(GValue));
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double accValue = accWrap ? accWrap->MinValue() : proxy->MinValue();
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if (IsNaN(accValue)) return;
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g_value_init(value, G_TYPE_DOUBLE);
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g_value_set_double(value, accValue);
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}
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static void getMinimumIncrementCB(AtkValue* obj, GValue* minimumIncrement) {
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ProxyAccessible* proxy = nullptr;
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AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
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if (!accWrap) {
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proxy = GetProxy(ATK_OBJECT(obj));
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if (!proxy) {
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return;
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}
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}
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memset(minimumIncrement, 0, sizeof(GValue));
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double accValue = accWrap ? accWrap->Step() : proxy->Step();
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if (IsNaN(accValue))
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accValue = 0; // zero if the minimum increment is undefined
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g_value_init(minimumIncrement, G_TYPE_DOUBLE);
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g_value_set_double(minimumIncrement, accValue);
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}
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static gboolean setCurrentValueCB(AtkValue* obj, const GValue* value) {
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ProxyAccessible* proxy = nullptr;
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AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
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if (!accWrap) {
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proxy = GetProxy(ATK_OBJECT(obj));
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if (!proxy) {
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return FALSE;
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}
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}
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double accValue = g_value_get_double(value);
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return accWrap ? accWrap->SetCurValue(accValue)
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: proxy->SetCurValue(accValue);
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}
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}
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void valueInterfaceInitCB(AtkValueIface* aIface) {
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NS_ASSERTION(aIface, "Invalid aIface");
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if (MOZ_UNLIKELY(!aIface)) return;
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aIface->get_current_value = getCurrentValueCB;
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aIface->get_maximum_value = getMaximumValueCB;
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aIface->get_minimum_value = getMinimumValueCB;
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aIface->get_minimum_increment = getMinimumIncrementCB;
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aIface->set_current_value = setCurrentValueCB;
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}
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