зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
3.3 KiB
C++
120 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "InterfaceInitFuncs.h"
|
|
|
|
#include "AccessibleWrap.h"
|
|
#include "nsMai.h"
|
|
#include "RemoteAccessible.h"
|
|
#include "mozilla/FloatingPoint.h"
|
|
#include "mozilla/Likely.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::a11y;
|
|
|
|
extern "C" {
|
|
|
|
static void getCurrentValueCB(AtkValue* obj, GValue* value) {
|
|
RemoteAccessible* proxy = nullptr;
|
|
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
|
|
if (!accWrap) {
|
|
proxy = GetProxy(ATK_OBJECT(obj));
|
|
if (!proxy) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
memset(value, 0, sizeof(GValue));
|
|
double accValue = accWrap ? accWrap->CurValue() : proxy->CurValue();
|
|
if (IsNaN(accValue)) return;
|
|
|
|
g_value_init(value, G_TYPE_DOUBLE);
|
|
g_value_set_double(value, accValue);
|
|
}
|
|
|
|
static void getMaximumValueCB(AtkValue* obj, GValue* value) {
|
|
RemoteAccessible* proxy = nullptr;
|
|
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
|
|
if (!accWrap) {
|
|
proxy = GetProxy(ATK_OBJECT(obj));
|
|
if (!proxy) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
memset(value, 0, sizeof(GValue));
|
|
double accValue = accWrap ? accWrap->MaxValue() : proxy->MaxValue();
|
|
if (IsNaN(accValue)) return;
|
|
|
|
g_value_init(value, G_TYPE_DOUBLE);
|
|
g_value_set_double(value, accValue);
|
|
}
|
|
|
|
static void getMinimumValueCB(AtkValue* obj, GValue* value) {
|
|
RemoteAccessible* proxy = nullptr;
|
|
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
|
|
if (!accWrap) {
|
|
proxy = GetProxy(ATK_OBJECT(obj));
|
|
if (!proxy) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
memset(value, 0, sizeof(GValue));
|
|
double accValue = accWrap ? accWrap->MinValue() : proxy->MinValue();
|
|
if (IsNaN(accValue)) return;
|
|
|
|
g_value_init(value, G_TYPE_DOUBLE);
|
|
g_value_set_double(value, accValue);
|
|
}
|
|
|
|
static void getMinimumIncrementCB(AtkValue* obj, GValue* minimumIncrement) {
|
|
RemoteAccessible* proxy = nullptr;
|
|
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
|
|
if (!accWrap) {
|
|
proxy = GetProxy(ATK_OBJECT(obj));
|
|
if (!proxy) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
memset(minimumIncrement, 0, sizeof(GValue));
|
|
double accValue = accWrap ? accWrap->Step() : proxy->Step();
|
|
if (IsNaN(accValue)) {
|
|
accValue = 0; // zero if the minimum increment is undefined
|
|
}
|
|
|
|
g_value_init(minimumIncrement, G_TYPE_DOUBLE);
|
|
g_value_set_double(minimumIncrement, accValue);
|
|
}
|
|
|
|
static gboolean setCurrentValueCB(AtkValue* obj, const GValue* value) {
|
|
RemoteAccessible* proxy = nullptr;
|
|
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
|
|
if (!accWrap) {
|
|
proxy = GetProxy(ATK_OBJECT(obj));
|
|
if (!proxy) {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
double accValue = g_value_get_double(value);
|
|
return accWrap ? accWrap->SetCurValue(accValue)
|
|
: proxy->SetCurValue(accValue);
|
|
}
|
|
}
|
|
|
|
void valueInterfaceInitCB(AtkValueIface* aIface) {
|
|
NS_ASSERTION(aIface, "Invalid aIface");
|
|
if (MOZ_UNLIKELY(!aIface)) return;
|
|
|
|
aIface->get_current_value = getCurrentValueCB;
|
|
aIface->get_maximum_value = getMaximumValueCB;
|
|
aIface->get_minimum_value = getMinimumValueCB;
|
|
aIface->get_minimum_increment = getMinimumIncrementCB;
|
|
aIface->set_current_value = setCurrentValueCB;
|
|
}
|