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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/fwl/cfwl_widget.h"
#include <algorithm>
#include <utility>
#include <vector>
#include "third_party/base/stl_util.h"
#include "xfa/fde/cfde_textout.h"
#include "xfa/fwl/cfwl_app.h"
#include "xfa/fwl/cfwl_combobox.h"
#include "xfa/fwl/cfwl_event.h"
#include "xfa/fwl/cfwl_eventmouse.h"
#include "xfa/fwl/cfwl_form.h"
#include "xfa/fwl/cfwl_messagekey.h"
#include "xfa/fwl/cfwl_messagekillfocus.h"
#include "xfa/fwl/cfwl_messagemouse.h"
#include "xfa/fwl/cfwl_messagemousewheel.h"
#include "xfa/fwl/cfwl_messagesetfocus.h"
#include "xfa/fwl/cfwl_notedriver.h"
#include "xfa/fwl/cfwl_themebackground.h"
#include "xfa/fwl/cfwl_themepart.h"
#include "xfa/fwl/cfwl_themetext.h"
#include "xfa/fwl/cfwl_widgetmgr.h"
#include "xfa/fwl/ifwl_themeprovider.h"
#include "xfa/fxfa/cxfa_ffapp.h"
#define FWL_STYLEEXT_MNU_Vert (1L << 0)
#define FWL_WGT_CalcHeight 2048
#define FWL_WGT_CalcWidth 2048
#define FWL_WGT_CalcMultiLineDefWidth 120.0f
CFWL_Widget::CFWL_Widget(const CFWL_App* app,
std::unique_ptr<CFWL_WidgetProperties> properties,
CFWL_Widget* pOuter)
: m_pOwnerApp(app),
m_pWidgetMgr(app->GetWidgetMgr()),
m_pProperties(std::move(properties)),
m_pOuter(pOuter),
m_iLock(0),
m_pLayoutItem(nullptr),
m_nEventKey(0),
m_pDelegate(nullptr) {
ASSERT(m_pWidgetMgr);
CFWL_Widget* pParent = m_pProperties->m_pParent;
m_pWidgetMgr->InsertWidget(pParent, this);
if (IsChild())
return;
CFWL_Widget* pOwner = m_pProperties->m_pOwner;
if (pOwner)
m_pWidgetMgr->SetOwner(pOwner, this);
}
CFWL_Widget::~CFWL_Widget() {
NotifyDriver();
m_pWidgetMgr->RemoveWidget(this);
}
bool CFWL_Widget::IsInstance(const CFX_WideStringC& wsClass) const {
return false;
}
CFX_RectF CFWL_Widget::GetAutosizedWidgetRect() {
return CFX_RectF();
}
CFX_RectF CFWL_Widget::GetWidgetRect() {
return m_pProperties->m_rtWidget;
}
void CFWL_Widget::InflateWidgetRect(CFX_RectF& rect) {
if (HasBorder()) {
float fBorder = GetBorderSize(true);
rect.Inflate(fBorder, fBorder);
}
}
void CFWL_Widget::SetWidgetRect(const CFX_RectF& rect) {
m_pProperties->m_rtWidget = rect;
}
CFX_RectF CFWL_Widget::GetClientRect() {
return GetEdgeRect();
}
void CFWL_Widget::SetParent(CFWL_Widget* pParent) {
m_pProperties->m_pParent = pParent;
m_pWidgetMgr->SetParent(pParent, this);
}
uint32_t CFWL_Widget::GetStyles() const {
return m_pProperties->m_dwStyles;
}
void CFWL_Widget::ModifyStyles(uint32_t dwStylesAdded,
uint32_t dwStylesRemoved) {
m_pProperties->m_dwStyles =
(m_pProperties->m_dwStyles & ~dwStylesRemoved) | dwStylesAdded;
}
uint32_t CFWL_Widget::GetStylesEx() const {
return m_pProperties->m_dwStyleExes;
}
uint32_t CFWL_Widget::GetStates() const {
return m_pProperties->m_dwStates;
}
void CFWL_Widget::ModifyStylesEx(uint32_t dwStylesExAdded,
uint32_t dwStylesExRemoved) {
m_pProperties->m_dwStyleExes =
(m_pProperties->m_dwStyleExes & ~dwStylesExRemoved) | dwStylesExAdded;
}
static void NotifyHideChildWidget(CFWL_WidgetMgr* widgetMgr,
CFWL_Widget* widget,
CFWL_NoteDriver* noteDriver) {
CFWL_Widget* child = widgetMgr->GetFirstChildWidget(widget);
while (child) {
noteDriver->NotifyTargetHide(child);
NotifyHideChildWidget(widgetMgr, child, noteDriver);
child = widgetMgr->GetNextSiblingWidget(child);
}
}
void CFWL_Widget::SetStates(uint32_t dwStates) {
m_pProperties->m_dwStates |= dwStates;
if (!(dwStates & FWL_WGTSTATE_Invisible))
return;
CFWL_NoteDriver* noteDriver =
static_cast<CFWL_NoteDriver*>(GetOwnerApp()->GetNoteDriver());
CFWL_WidgetMgr* widgetMgr = GetOwnerApp()->GetWidgetMgr();
noteDriver->NotifyTargetHide(this);
CFWL_Widget* child = widgetMgr->GetFirstChildWidget(this);
while (child) {
noteDriver->NotifyTargetHide(child);
NotifyHideChildWidget(widgetMgr, child, noteDriver);
child = widgetMgr->GetNextSiblingWidget(child);
}
return;
}
void CFWL_Widget::RemoveStates(uint32_t dwStates) {
m_pProperties->m_dwStates &= ~dwStates;
}
FWL_WidgetHit CFWL_Widget::HitTest(const CFX_PointF& point) {
if (GetClientRect().Contains(point))
return FWL_WidgetHit::Client;
if (HasBorder() && GetRelativeRect().Contains(point))
return FWL_WidgetHit::Border;
return FWL_WidgetHit::Unknown;
}
CFX_PointF CFWL_Widget::TransformTo(CFWL_Widget* pWidget,
const CFX_PointF& point) {
if (m_pWidgetMgr->IsFormDisabled()) {
CFX_SizeF szOffset;
if (IsParent(pWidget)) {
szOffset = GetOffsetFromParent(pWidget);
} else {
szOffset = pWidget->GetOffsetFromParent(this);
szOffset.width = -szOffset.width;
szOffset.height = -szOffset.height;
}
return point + CFX_PointF(szOffset.width, szOffset.height);
}
CFX_PointF ret = point;
CFWL_Widget* parent = GetParent();
if (parent)
ret = GetMatrix().Transform(ret + GetWidgetRect().TopLeft());
CFWL_Widget* form1 = m_pWidgetMgr->GetSystemFormWidget(this);
if (!form1)
return ret;
if (!pWidget)
return ret + form1->GetWidgetRect().TopLeft();
CFWL_Widget* form2 = m_pWidgetMgr->GetSystemFormWidget(pWidget);
if (!form2)
return ret;
if (form1 != form2) {
ret += form1->GetWidgetRect().TopLeft();
ret -= form2->GetWidgetRect().TopLeft();
}
parent = pWidget->GetParent();
if (!parent)
return ret;
return pWidget->GetMatrix().GetInverse().Transform(ret) -
pWidget->GetWidgetRect().TopLeft();
}
CFX_Matrix CFWL_Widget::GetMatrix() {
if (!m_pProperties)
return CFX_Matrix();
CFWL_Widget* parent = GetParent();
std::vector<CFWL_Widget*> parents;
while (parent) {
parents.push_back(parent);
parent = parent->GetParent();
}
CFX_Matrix matrix;
CFX_Matrix ctmOnParent;
CFX_RectF rect;
int32_t count = pdfium::CollectionSize<int32_t>(parents);
for (int32_t i = count - 2; i >= 0; i--) {
parent = parents[i];
if (parent->m_pProperties)
ctmOnParent.SetIdentity();
rect = parent->GetWidgetRect();
matrix.Concat(ctmOnParent, true);
matrix.Translate(rect.left, rect.top, true);
}
CFX_Matrix m;
m.SetIdentity();
matrix.Concat(m, true);
parents.clear();
return matrix;
}
IFWL_ThemeProvider* CFWL_Widget::GetThemeProvider() const {
return m_pProperties->m_pThemeProvider;
}
void CFWL_Widget::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
m_pProperties->m_pThemeProvider = pThemeProvider;
}
bool CFWL_Widget::IsEnabled() const {
return (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) == 0;
}
bool CFWL_Widget::HasBorder() const {
return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border);
}
bool CFWL_Widget::IsVisible() const {
return (m_pProperties->m_dwStates & FWL_WGTSTATE_Invisible) == 0;
}
bool CFWL_Widget::IsOverLapper() const {
return (m_pProperties->m_dwStyles & FWL_WGTSTYLE_WindowTypeMask) ==
FWL_WGTSTYLE_OverLapper;
}
bool CFWL_Widget::IsPopup() const {
return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Popup);
}
bool CFWL_Widget::IsChild() const {
return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Child);
}
CFX_RectF CFWL_Widget::GetEdgeRect() {
CFX_RectF rtEdge(0, 0, m_pProperties->m_rtWidget.width,
m_pProperties->m_rtWidget.height);
if (HasBorder()) {
float fCX = GetBorderSize(true);
float fCY = GetBorderSize(false);
rtEdge.Deflate(fCX, fCY);
}
return rtEdge;
}
float CFWL_Widget::GetBorderSize(bool bCX) {
IFWL_ThemeProvider* theme = GetAvailableTheme();
if (!theme)
return 0.0f;
return bCX ? theme->GetCXBorderSize() : theme->GetCYBorderSize();
}
CFX_RectF CFWL_Widget::GetRelativeRect() {
return CFX_RectF(0, 0, m_pProperties->m_rtWidget.width,
m_pProperties->m_rtWidget.height);
}
IFWL_ThemeProvider* CFWL_Widget::GetAvailableTheme() {
if (m_pProperties->m_pThemeProvider)
return m_pProperties->m_pThemeProvider;
CFWL_Widget* pUp = this;
do {
pUp = (pUp->GetStyles() & FWL_WGTSTYLE_Popup)
? m_pWidgetMgr->GetOwnerWidget(pUp)
: m_pWidgetMgr->GetParentWidget(pUp);
if (pUp) {
IFWL_ThemeProvider* pRet = pUp->GetThemeProvider();
if (pRet)
return pRet;
}
} while (pUp);
return nullptr;
}
CFWL_Widget* CFWL_Widget::GetRootOuter() {
CFWL_Widget* pRet = m_pOuter;
if (!pRet)
return nullptr;
while (CFWL_Widget* pOuter = pRet->GetOuter())
pRet = pOuter;
return pRet;
}
CFX_SizeF CFWL_Widget::CalcTextSize(const CFX_WideString& wsText,
IFWL_ThemeProvider* pTheme,
bool bMultiLine) {
if (!pTheme)
return CFX_SizeF();
CFWL_ThemeText calPart;
calPart.m_pWidget = this;
calPart.m_wsText = wsText;
calPart.m_dwTTOStyles =
bMultiLine ? FDE_TTOSTYLE_LineWrap : FDE_TTOSTYLE_SingleLine;
calPart.m_iTTOAlign = FDE_TTOALIGNMENT_TopLeft;
float fWidth = bMultiLine ? FWL_WGT_CalcMultiLineDefWidth : FWL_WGT_CalcWidth;
CFX_RectF rect(0, 0, fWidth, FWL_WGT_CalcHeight);
pTheme->CalcTextRect(&calPart, rect);
return CFX_SizeF(rect.width, rect.height);
}
void CFWL_Widget::CalcTextRect(const CFX_WideString& wsText,
IFWL_ThemeProvider* pTheme,
uint32_t dwTTOStyles,
int32_t iTTOAlign,
CFX_RectF& rect) {
CFWL_ThemeText calPart;
calPart.m_pWidget = this;
calPart.m_wsText = wsText;
calPart.m_dwTTOStyles = dwTTOStyles;
calPart.m_iTTOAlign = iTTOAlign;
pTheme->CalcTextRect(&calPart, rect);
}
void CFWL_Widget::SetFocus(bool bFocus) {
if (m_pWidgetMgr->IsFormDisabled())
return;
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pDriver =
static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
if (!pDriver)
return;
CFWL_Widget* curFocus = pDriver->GetFocus();
if (bFocus && curFocus != this)
pDriver->SetFocus(this);
else if (!bFocus && curFocus == this)
pDriver->SetFocus(nullptr);
}
void CFWL_Widget::SetGrab(bool bSet) {
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pDriver =
static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
pDriver->SetGrab(this, bSet);
}
void CFWL_Widget::GetPopupPos(float fMinHeight,
float fMaxHeight,
const CFX_RectF& rtAnchor,
CFX_RectF& rtPopup) {
if (GetClassID() == FWL_Type::ComboBox) {
if (m_pWidgetMgr->IsFormDisabled()) {
m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
rtPopup);
return;
}
GetPopupPosComboBox(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
return;
}
if (GetClassID() == FWL_Type::DateTimePicker &&
m_pWidgetMgr->IsFormDisabled()) {
m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
rtPopup);
return;
}
GetPopupPosGeneral(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
}
bool CFWL_Widget::GetPopupPosMenu(float fMinHeight,
float fMaxHeight,
const CFX_RectF& rtAnchor,
CFX_RectF& rtPopup) {
if (GetStylesEx() & FWL_STYLEEXT_MNU_Vert) {
bool bLeft = m_pProperties->m_rtWidget.left < 0;
float fRight = rtAnchor.right() + rtPopup.width;
CFX_PointF point = TransformTo(nullptr, CFX_PointF());
if (fRight + point.x > 0.0f || bLeft) {
rtPopup = CFX_RectF(rtAnchor.left - rtPopup.width, rtAnchor.top,
rtPopup.width, rtPopup.height);
} else {
rtPopup = CFX_RectF(rtAnchor.right(), rtAnchor.top, rtPopup.width,
rtPopup.height);
}
rtPopup.Offset(point.x, point.y);
return true;
}
float fBottom = rtAnchor.bottom() + rtPopup.height;
CFX_PointF point = TransformTo(nullptr, point);
if (fBottom + point.y > 0.0f) {
rtPopup = CFX_RectF(rtAnchor.left, rtAnchor.top - rtPopup.height,
rtPopup.width, rtPopup.height);
} else {
rtPopup = CFX_RectF(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
rtPopup.height);
}
rtPopup.Offset(point.x, point.y);
return true;
}
bool CFWL_Widget::GetPopupPosComboBox(float fMinHeight,
float fMaxHeight,
const CFX_RectF& rtAnchor,
CFX_RectF& rtPopup) {
float fPopHeight = rtPopup.height;
if (rtPopup.height > fMaxHeight)
fPopHeight = fMaxHeight;
else if (rtPopup.height < fMinHeight)
fPopHeight = fMinHeight;
float fWidth = std::max(rtAnchor.width, rtPopup.width);
float fBottom = rtAnchor.bottom() + fPopHeight;
CFX_PointF point = TransformTo(nullptr, CFX_PointF());
if (fBottom + point.y > 0.0f) {
rtPopup =
CFX_RectF(rtAnchor.left, rtAnchor.top - fPopHeight, fWidth, fPopHeight);
} else {
rtPopup = CFX_RectF(rtAnchor.left, rtAnchor.bottom(), fWidth, fPopHeight);
}
rtPopup.Offset(point.x, point.y);
return true;
}
bool CFWL_Widget::GetPopupPosGeneral(float fMinHeight,
float fMaxHeight,
const CFX_RectF& rtAnchor,
CFX_RectF& rtPopup) {
CFX_PointF point = TransformTo(nullptr, CFX_PointF());
if (rtAnchor.bottom() + point.y > 0.0f) {
rtPopup = CFX_RectF(rtAnchor.left, rtAnchor.top - rtPopup.height,
rtPopup.width, rtPopup.height);
} else {
rtPopup = CFX_RectF(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
rtPopup.height);
}
rtPopup.Offset(point.x, point.y);
return true;
}
void CFWL_Widget::RegisterEventTarget(CFWL_Widget* pEventSource) {
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
if (!pNoteDriver)
return;
pNoteDriver->RegisterEventTarget(this, pEventSource);
}
void CFWL_Widget::UnregisterEventTarget() {
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
if (!pNoteDriver)
return;
pNoteDriver->UnregisterEventTarget(this);
}
void CFWL_Widget::DispatchEvent(CFWL_Event* pEvent) {
if (m_pOuter) {
m_pOuter->GetDelegate()->OnProcessEvent(pEvent);
return;
}
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pNoteDriver = pApp->GetNoteDriver();
if (!pNoteDriver)
return;
pNoteDriver->SendEvent(pEvent);
}
void CFWL_Widget::Repaint() {
RepaintRect(CFX_RectF(0, 0, m_pProperties->m_rtWidget.width,
m_pProperties->m_rtWidget.height));
}
void CFWL_Widget::RepaintRect(const CFX_RectF& pRect) {
m_pWidgetMgr->RepaintWidget(this, pRect);
}
void CFWL_Widget::DrawBackground(CXFA_Graphics* pGraphics,
CFWL_Part iPartBk,
IFWL_ThemeProvider* pTheme,
const CFX_Matrix* pMatrix) {
CFWL_ThemeBackground param;
param.m_pWidget = this;
param.m_iPart = iPartBk;
param.m_pGraphics = pGraphics;
if (pMatrix)
param.m_matrix.Concat(*pMatrix, true);
param.m_rtPart = GetRelativeRect();
pTheme->DrawBackground(&param);
}
void CFWL_Widget::DrawBorder(CXFA_Graphics* pGraphics,
CFWL_Part iPartBorder,
IFWL_ThemeProvider* pTheme,
const CFX_Matrix* pMatrix) {
CFWL_ThemeBackground param;
param.m_pWidget = this;
param.m_iPart = iPartBorder;
param.m_pGraphics = pGraphics;
if (pMatrix)
param.m_matrix.Concat(*pMatrix, true);
param.m_rtPart = GetRelativeRect();
pTheme->DrawBackground(&param);
}
void CFWL_Widget::NotifyDriver() {
const CFWL_App* pApp = GetOwnerApp();
if (!pApp)
return;
CFWL_NoteDriver* pDriver =
static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
if (!pDriver)
return;
pDriver->NotifyTargetDestroy(this);
}
CFX_SizeF CFWL_Widget::GetOffsetFromParent(CFWL_Widget* pParent) {
if (pParent == this)
return CFX_SizeF();
CFWL_WidgetMgr* pWidgetMgr = GetOwnerApp()->GetWidgetMgr();
if (!pWidgetMgr)
return CFX_SizeF();
CFX_SizeF szRet(m_pProperties->m_rtWidget.left,
m_pProperties->m_rtWidget.top);
CFWL_Widget* pDstWidget = GetParent();
while (pDstWidget && pDstWidget != pParent) {
CFX_RectF rtDst = pDstWidget->GetWidgetRect();
szRet += CFX_SizeF(rtDst.left, rtDst.top);
pDstWidget = pWidgetMgr->GetParentWidget(pDstWidget);
}
return szRet;
}
bool CFWL_Widget::IsParent(CFWL_Widget* pParent) {
CFWL_Widget* pUpWidget = GetParent();
while (pUpWidget) {
if (pUpWidget == pParent)
return true;
pUpWidget = pUpWidget->GetParent();
}
return false;
}
void CFWL_Widget::OnProcessMessage(CFWL_Message* pMessage) {
if (!pMessage->m_pDstTarget)
return;
CFWL_Widget* pWidget = pMessage->m_pDstTarget;
switch (pMessage->GetType()) {
case CFWL_Message::Type::Mouse: {
CFWL_MessageMouse* pMsgMouse = static_cast<CFWL_MessageMouse*>(pMessage);
CFWL_EventMouse evt(pWidget, pWidget);
evt.m_dwCmd = pMsgMouse->m_dwCmd;
pWidget->DispatchEvent(&evt);
break;
}
default:
break;
}
}
void CFWL_Widget::OnProcessEvent(CFWL_Event* pEvent) {}
void CFWL_Widget::OnDrawWidget(CXFA_Graphics* pGraphics,
const CFX_Matrix* pMatrix) {}