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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fxfa/cxfa_ffpageview.h"
#include <algorithm>
#include <memory>
#include <vector>
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
#include "xfa/fde/fde_render.h"
#include "xfa/fxfa/app/xfa_ffcheckbutton.h"
#include "xfa/fxfa/app/xfa_ffchoicelist.h"
#include "xfa/fxfa/app/xfa_fffield.h"
#include "xfa/fxfa/app/xfa_ffimageedit.h"
#include "xfa/fxfa/app/xfa_ffpushbutton.h"
#include "xfa/fxfa/app/xfa_fftextedit.h"
#include "xfa/fxfa/app/xfa_fwladapter.h"
#include "xfa/fxfa/cxfa_ffdoc.h"
#include "xfa/fxfa/cxfa_ffdocview.h"
#include "xfa/fxfa/cxfa_ffwidget.h"
namespace {
CFX_Matrix GetPageMatrix(const CFX_RectF& docPageRect,
const CFX_Rect& devicePageRect,
int32_t iRotate,
uint32_t dwCoordinatesType) {
ASSERT(iRotate >= 0 && iRotate <= 3);
bool bFlipX = (dwCoordinatesType & 0x01) != 0;
bool bFlipY = (dwCoordinatesType & 0x02) != 0;
CFX_Matrix m((bFlipX ? -1.0f : 1.0f), 0, 0, (bFlipY ? -1.0f : 1.0f), 0, 0);
if (iRotate == 0 || iRotate == 2) {
m.a *= (float)devicePageRect.width / docPageRect.width;
m.d *= (float)devicePageRect.height / docPageRect.height;
} else {
m.a *= (float)devicePageRect.height / docPageRect.width;
m.d *= (float)devicePageRect.width / docPageRect.height;
}
m.Rotate(iRotate * 1.57079632675f);
switch (iRotate) {
case 0:
m.e = bFlipX ? (float)devicePageRect.right() : (float)devicePageRect.left;
m.f = bFlipY ? (float)devicePageRect.bottom() : (float)devicePageRect.top;
break;
case 1:
m.e = bFlipY ? (float)devicePageRect.left : (float)devicePageRect.right();
m.f = bFlipX ? (float)devicePageRect.bottom() : (float)devicePageRect.top;
break;
case 2:
m.e = bFlipX ? (float)devicePageRect.left : (float)devicePageRect.right();
m.f = bFlipY ? (float)devicePageRect.top : (float)devicePageRect.bottom();
break;
case 3:
m.e = bFlipY ? (float)devicePageRect.right() : (float)devicePageRect.left;
m.f = bFlipX ? (float)devicePageRect.top : (float)devicePageRect.bottom();
break;
default:
break;
}
return m;
}
bool PageWidgetFilter(CXFA_FFWidget* pWidget,
uint32_t dwFilter,
bool bTraversal,
bool bIgnorerelevant) {
CXFA_WidgetAcc* pWidgetAcc = pWidget->GetDataAcc();
if (!!(dwFilter & XFA_WidgetStatus_Focused) &&
pWidgetAcc->GetElementType() != XFA_Element::Field) {
return false;
}
uint32_t dwStatus = pWidget->GetStatus();
if (bTraversal && (dwStatus & XFA_WidgetStatus_Disabled))
return false;
if (bIgnorerelevant)
return !!(dwStatus & XFA_WidgetStatus_Visible);
dwFilter &= (XFA_WidgetStatus_Visible | XFA_WidgetStatus_Viewable |
XFA_WidgetStatus_Printable);
return (dwFilter & dwStatus) == dwFilter;
}
bool IsLayoutElement(XFA_Element eElement, bool bLayoutContainer) {
switch (eElement) {
case XFA_Element::Draw:
case XFA_Element::Field:
case XFA_Element::InstanceManager:
return !bLayoutContainer;
case XFA_Element::Area:
case XFA_Element::Subform:
case XFA_Element::ExclGroup:
case XFA_Element::SubformSet:
case XFA_Element::PageArea:
case XFA_Element::Form:
return true;
default:
return false;
}
}
} // namespace
CXFA_FFPageView::CXFA_FFPageView(CXFA_FFDocView* pDocView, CXFA_Node* pPageArea)
: CXFA_ContainerLayoutItem(pPageArea), m_pDocView(pDocView) {}
CXFA_FFPageView::~CXFA_FFPageView() {}
CXFA_FFDocView* CXFA_FFPageView::GetDocView() const {
return m_pDocView;
}
CFX_RectF CXFA_FFPageView::GetPageViewRect() const {
return CFX_RectF(0, 0, GetPageSize());
}
CFX_Matrix CXFA_FFPageView::GetDisplayMatrix(const CFX_Rect& rtDisp,
int32_t iRotate) const {
return GetPageMatrix(CFX_RectF(0, 0, GetPageSize()), rtDisp, iRotate, 0);
}
IXFA_WidgetIterator* CXFA_FFPageView::CreateWidgetIterator(
uint32_t dwTraverseWay,
uint32_t dwWidgetFilter) {
switch (dwTraverseWay) {
case XFA_TRAVERSEWAY_Tranvalse:
return new CXFA_FFTabOrderPageWidgetIterator(this, dwWidgetFilter);
case XFA_TRAVERSEWAY_Form:
return new CXFA_FFPageWidgetIterator(this, dwWidgetFilter);
}
return nullptr;
}
CXFA_FFPageWidgetIterator::CXFA_FFPageWidgetIterator(CXFA_FFPageView* pPageView,
uint32_t dwFilter)
: m_pPageView(pPageView), m_dwFilter(dwFilter), m_sIterator(pPageView) {
m_bIgnorerelevant =
m_pPageView->GetDocView()->GetDoc()->GetXFADoc()->GetCurVersionMode() <
XFA_VERSION_205;
}
CXFA_FFPageWidgetIterator::~CXFA_FFPageWidgetIterator() {}
void CXFA_FFPageWidgetIterator::Reset() {
m_sIterator.Reset();
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::MoveToFirst() {
m_sIterator.Reset();
for (CXFA_LayoutItem* pLayoutItem = m_sIterator.GetCurrent(); pLayoutItem;
pLayoutItem = m_sIterator.MoveToNext()) {
if (CXFA_FFWidget* hWidget = GetWidget(pLayoutItem)) {
return hWidget;
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::MoveToLast() {
m_sIterator.SetCurrent(nullptr);
return MoveToPrevious();
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::MoveToNext() {
for (CXFA_LayoutItem* pLayoutItem = m_sIterator.MoveToNext(); pLayoutItem;
pLayoutItem = m_sIterator.MoveToNext()) {
if (CXFA_FFWidget* hWidget = GetWidget(pLayoutItem)) {
return hWidget;
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::MoveToPrevious() {
for (CXFA_LayoutItem* pLayoutItem = m_sIterator.MoveToPrev(); pLayoutItem;
pLayoutItem = m_sIterator.MoveToPrev()) {
if (CXFA_FFWidget* hWidget = GetWidget(pLayoutItem)) {
return hWidget;
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::GetCurrentWidget() {
CXFA_LayoutItem* pLayoutItem = m_sIterator.GetCurrent();
return pLayoutItem ? XFA_GetWidgetFromLayoutItem(pLayoutItem) : nullptr;
}
bool CXFA_FFPageWidgetIterator::SetCurrentWidget(CXFA_FFWidget* hWidget) {
return hWidget && m_sIterator.SetCurrent(hWidget);
}
CXFA_FFWidget* CXFA_FFPageWidgetIterator::GetWidget(
CXFA_LayoutItem* pLayoutItem) {
CXFA_FFWidget* pWidget = XFA_GetWidgetFromLayoutItem(pLayoutItem);
if (!pWidget)
return nullptr;
if (!PageWidgetFilter(pWidget, m_dwFilter, false, m_bIgnorerelevant))
return nullptr;
if (!pWidget->IsLoaded() &&
!!(pWidget->GetStatus() & XFA_WidgetStatus_Visible)) {
pWidget->LoadWidget();
}
return pWidget;
}
void CXFA_TabParam::AppendTabParam(CXFA_TabParam* pParam) {
m_Children.push_back(pParam->GetWidget());
m_Children.insert(m_Children.end(), pParam->GetChildren().begin(),
pParam->GetChildren().end());
}
void CXFA_TabParam::ClearChildren() {
m_Children.clear();
}
CXFA_FFTabOrderPageWidgetIterator::CXFA_FFTabOrderPageWidgetIterator(
CXFA_FFPageView* pPageView,
uint32_t dwFilter)
: m_pPageView(pPageView), m_dwFilter(dwFilter), m_iCurWidget(-1) {
m_bIgnorerelevant =
m_pPageView->GetDocView()->GetDoc()->GetXFADoc()->GetCurVersionMode() <
XFA_VERSION_205;
Reset();
}
CXFA_FFTabOrderPageWidgetIterator::~CXFA_FFTabOrderPageWidgetIterator() {}
void CXFA_FFTabOrderPageWidgetIterator::Reset() {
CreateTabOrderWidgetArray();
m_iCurWidget = -1;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToFirst() {
for (int32_t i = 0;
i < pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray); i++) {
if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
m_bIgnorerelevant)) {
m_iCurWidget = i;
return m_TabOrderWidgetArray[m_iCurWidget];
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToLast() {
for (int32_t i = pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray) - 1;
i >= 0; i--) {
if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
m_bIgnorerelevant)) {
m_iCurWidget = i;
return m_TabOrderWidgetArray[m_iCurWidget];
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToNext() {
for (int32_t i = m_iCurWidget + 1;
i < pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray); i++) {
if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
m_bIgnorerelevant)) {
m_iCurWidget = i;
return m_TabOrderWidgetArray[m_iCurWidget];
}
}
m_iCurWidget = -1;
return nullptr;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToPrevious() {
for (int32_t i = m_iCurWidget - 1; i >= 0; i--) {
if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
m_bIgnorerelevant)) {
m_iCurWidget = i;
return m_TabOrderWidgetArray[m_iCurWidget];
}
}
m_iCurWidget = -1;
return nullptr;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::GetCurrentWidget() {
return m_iCurWidget >= 0 ? m_TabOrderWidgetArray[m_iCurWidget] : nullptr;
}
bool CXFA_FFTabOrderPageWidgetIterator::SetCurrentWidget(
CXFA_FFWidget* hWidget) {
auto it = std::find(m_TabOrderWidgetArray.begin(),
m_TabOrderWidgetArray.end(), hWidget);
if (it == m_TabOrderWidgetArray.end())
return false;
m_iCurWidget = it - m_TabOrderWidgetArray.begin();
return true;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::GetTraverseWidget(
CXFA_FFWidget* pWidget) {
CXFA_WidgetAcc* pAcc = pWidget->GetDataAcc();
CXFA_Node* pTraversal = pAcc->GetNode()->GetChild(0, XFA_Element::Traversal);
if (pTraversal) {
CXFA_Node* pTraverse = pTraversal->GetChild(0, XFA_Element::Traverse);
if (pTraverse) {
CFX_WideString wsTraverseWidgetName;
if (pTraverse->GetAttribute(XFA_ATTRIBUTE_Ref, wsTraverseWidgetName)) {
return FindWidgetByName(wsTraverseWidgetName, pWidget);
}
}
}
return nullptr;
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::FindWidgetByName(
const CFX_WideString& wsWidgetName,
CXFA_FFWidget* pRefWidget) {
return pRefWidget->GetDocView()->GetWidgetByName(wsWidgetName, pRefWidget);
}
void CXFA_FFTabOrderPageWidgetIterator::CreateTabOrderWidgetArray() {
m_TabOrderWidgetArray.clear();
std::vector<CXFA_FFWidget*> SpaceOrderWidgetArray;
CreateSpaceOrderWidgetArray(&SpaceOrderWidgetArray);
if (SpaceOrderWidgetArray.empty())
return;
int32_t nWidgetCount = pdfium::CollectionSize<int32_t>(SpaceOrderWidgetArray);
CXFA_FFWidget* hWidget = SpaceOrderWidgetArray[0];
while (pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray) <
nWidgetCount) {
if (!pdfium::ContainsValue(m_TabOrderWidgetArray, hWidget)) {
m_TabOrderWidgetArray.push_back(hWidget);
CXFA_WidgetAcc* pWidgetAcc = hWidget->GetDataAcc();
if (pWidgetAcc->GetUIType() == XFA_Element::ExclGroup) {
auto it = std::find(SpaceOrderWidgetArray.begin(),
SpaceOrderWidgetArray.end(), hWidget);
int32_t iWidgetIndex = it != SpaceOrderWidgetArray.end()
? it - SpaceOrderWidgetArray.begin() + 1
: 0;
while (true) {
CXFA_FFWidget* pRadio =
SpaceOrderWidgetArray[iWidgetIndex % nWidgetCount];
if (pRadio->GetDataAcc()->GetExclGroup() != pWidgetAcc) {
break;
}
if (!pdfium::ContainsValue(m_TabOrderWidgetArray, hWidget)) {
m_TabOrderWidgetArray.push_back(pRadio);
}
iWidgetIndex++;
}
}
if (CXFA_FFWidget* hTraverseWidget = GetTraverseWidget(hWidget)) {
hWidget = hTraverseWidget;
continue;
}
}
auto it = std::find(SpaceOrderWidgetArray.begin(),
SpaceOrderWidgetArray.end(), hWidget);
int32_t iWidgetIndex = it != SpaceOrderWidgetArray.end()
? it - SpaceOrderWidgetArray.begin() + 1
: 0;
hWidget = SpaceOrderWidgetArray[iWidgetIndex % nWidgetCount];
}
}
void CXFA_FFTabOrderPageWidgetIterator::OrderContainer(
CXFA_LayoutItemIterator* sIterator,
CXFA_LayoutItem* pContainerItem,
CXFA_TabParam* pContainer,
bool& bCurrentItem,
bool& bContentArea,
bool bMarsterPage) {
std::vector<std::unique_ptr<CXFA_TabParam>> tabParams;
CXFA_LayoutItem* pSearchItem = sIterator->MoveToNext();
while (pSearchItem) {
if (!pSearchItem->IsContentLayoutItem()) {
bContentArea = true;
pSearchItem = sIterator->MoveToNext();
continue;
}
if (bMarsterPage && bContentArea) {
break;
}
if (bMarsterPage || bContentArea) {
CXFA_FFWidget* hWidget = GetWidget(pSearchItem);
if (!hWidget) {
pSearchItem = sIterator->MoveToNext();
continue;
}
if (pContainerItem && (pSearchItem->GetParent() != pContainerItem)) {
bCurrentItem = true;
break;
}
tabParams.push_back(pdfium::MakeUnique<CXFA_TabParam>(hWidget));
if (IsLayoutElement(pSearchItem->GetFormNode()->GetElementType(), true)) {
OrderContainer(sIterator, pSearchItem, tabParams.back().get(),
bCurrentItem, bContentArea, bMarsterPage);
}
}
if (bCurrentItem) {
pSearchItem = sIterator->GetCurrent();
bCurrentItem = false;
} else {
pSearchItem = sIterator->MoveToNext();
}
}
std::sort(tabParams.begin(), tabParams.end(),
[](const std::unique_ptr<CXFA_TabParam>& arg1,
const std::unique_ptr<CXFA_TabParam>& arg2) {
const CFX_RectF& rt1 = arg1->GetWidget()->GetWidgetRect();
const CFX_RectF& rt2 = arg2->GetWidget()->GetWidgetRect();
if (rt1.top - rt2.top >= XFA_FLOAT_PERCISION)
return rt1.top < rt2.top;
return rt1.left < rt2.left;
});
for (const auto& pParam : tabParams)
pContainer->AppendTabParam(pParam.get());
}
void CXFA_FFTabOrderPageWidgetIterator::CreateSpaceOrderWidgetArray(
std::vector<CXFA_FFWidget*>* WidgetArray) {
CXFA_LayoutItemIterator sIterator(m_pPageView);
auto pParam = pdfium::MakeUnique<CXFA_TabParam>(nullptr);
bool bCurrentItem = false;
bool bContentArea = false;
OrderContainer(&sIterator, nullptr, pParam.get(), bCurrentItem, bContentArea);
WidgetArray->insert(WidgetArray->end(), pParam->GetChildren().begin(),
pParam->GetChildren().end());
sIterator.Reset();
bCurrentItem = false;
bContentArea = false;
pParam->ClearChildren();
OrderContainer(&sIterator, nullptr, pParam.get(), bCurrentItem, bContentArea,
true);
WidgetArray->insert(WidgetArray->end(), pParam->GetChildren().begin(),
pParam->GetChildren().end());
}
CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::GetWidget(
CXFA_LayoutItem* pLayoutItem) {
if (CXFA_FFWidget* pWidget = XFA_GetWidgetFromLayoutItem(pLayoutItem)) {
if (!pWidget->IsLoaded() &&
(pWidget->GetStatus() & XFA_WidgetStatus_Visible)) {
pWidget->LoadWidget();
}
return pWidget;
}
return nullptr;
}
CXFA_TabParam::CXFA_TabParam(CXFA_FFWidget* pWidget) : m_pWidget(pWidget) {}
CXFA_TabParam::~CXFA_TabParam() {}