1 // Copyright 2014 The PDFium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "xfa/fwl/cfwl_widgetmgr.h"
8
9 #include "build/build_config.h"
10 #include "fxjs/gc/container_trace.h"
11 #include "third_party/base/check.h"
12 #include "xfa/fwl/cfwl_app.h"
13 #include "xfa/fwl/cfwl_message.h"
14 #include "xfa/fwl/cfwl_notedriver.h"
15 #include "xfa/fwl/cfwl_pushbutton.h"
16
CFWL_WidgetMgr(AdapterIface * pAdapter,CFWL_App * pApp)17 CFWL_WidgetMgr::CFWL_WidgetMgr(AdapterIface* pAdapter, CFWL_App* pApp)
18 : m_pAdapter(pAdapter), m_pApp(pApp) {
19 DCHECK(m_pAdapter);
20 m_mapWidgetItem[nullptr] = cppgc::MakeGarbageCollected<Item>(
21 pApp->GetHeap()->GetAllocationHandle(), nullptr);
22 }
23
24 CFWL_WidgetMgr::~CFWL_WidgetMgr() = default;
25
Trace(cppgc::Visitor * visitor) const26 void CFWL_WidgetMgr::Trace(cppgc::Visitor* visitor) const {
27 visitor->Trace(m_pApp);
28 visitor->Trace(m_pAdapter);
29 ContainerTrace(visitor, m_mapWidgetItem);
30 }
31
GetParentWidget(const CFWL_Widget * pWidget) const32 CFWL_Widget* CFWL_WidgetMgr::GetParentWidget(const CFWL_Widget* pWidget) const {
33 Item* pItem = GetWidgetMgrItem(pWidget);
34 if (!pItem)
35 return nullptr;
36
37 Item* pParent = pItem->GetParent();
38 return pParent ? pParent->pWidget : nullptr;
39 }
40
GetPriorSiblingWidget(CFWL_Widget * pWidget) const41 CFWL_Widget* CFWL_WidgetMgr::GetPriorSiblingWidget(CFWL_Widget* pWidget) const {
42 Item* pItem = GetWidgetMgrItem(pWidget);
43 if (!pItem)
44 return nullptr;
45
46 Item* pSibling = pItem->GetPrevSibling();
47 return pSibling ? pSibling->pWidget : nullptr;
48 }
49
GetNextSiblingWidget(CFWL_Widget * pWidget) const50 CFWL_Widget* CFWL_WidgetMgr::GetNextSiblingWidget(CFWL_Widget* pWidget) const {
51 Item* pItem = GetWidgetMgrItem(pWidget);
52 if (!pItem)
53 return nullptr;
54
55 Item* pSibling = pItem->GetNextSibling();
56 return pSibling ? pSibling->pWidget : nullptr;
57 }
58
GetFirstChildWidget(CFWL_Widget * pWidget) const59 CFWL_Widget* CFWL_WidgetMgr::GetFirstChildWidget(CFWL_Widget* pWidget) const {
60 Item* pItem = GetWidgetMgrItem(pWidget);
61 if (!pItem)
62 return nullptr;
63
64 Item* pChild = pItem->GetFirstChild();
65 return pChild ? pChild->pWidget : nullptr;
66 }
67
GetLastChildWidget(CFWL_Widget * pWidget) const68 CFWL_Widget* CFWL_WidgetMgr::GetLastChildWidget(CFWL_Widget* pWidget) const {
69 Item* pItem = GetWidgetMgrItem(pWidget);
70 if (!pItem)
71 return nullptr;
72
73 Item* pChild = pItem->GetLastChild();
74 return pChild ? pChild->pWidget : nullptr;
75 }
76
RepaintWidget(CFWL_Widget * pWidget,const CFX_RectF & rect)77 void CFWL_WidgetMgr::RepaintWidget(CFWL_Widget* pWidget,
78 const CFX_RectF& rect) {
79 CFWL_Widget* pNative = pWidget;
80 CFX_RectF transformedRect = rect;
81 CFWL_Widget* pOuter = pWidget->GetOuter();
82 while (pOuter) {
83 CFX_RectF rtTemp = pNative->GetWidgetRect();
84 transformedRect.left += rtTemp.left;
85 transformedRect.top += rtTemp.top;
86 pNative = pOuter;
87 pOuter = pOuter->GetOuter();
88 }
89 m_pAdapter->RepaintWidget(pNative);
90 }
91
InsertWidget(CFWL_Widget * pParent,CFWL_Widget * pChild)92 void CFWL_WidgetMgr::InsertWidget(CFWL_Widget* pParent, CFWL_Widget* pChild) {
93 Item* pParentItem = GetWidgetMgrItem(pParent);
94 if (!pParentItem) {
95 pParentItem = CreateWidgetMgrItem(pParent);
96 GetWidgetMgrRootItem()->AppendLastChild(pParentItem);
97 }
98 Item* pChildItem = GetWidgetMgrItem(pChild);
99 if (!pChildItem)
100 pChildItem = CreateWidgetMgrItem(pChild);
101 pParentItem->AppendLastChild(pChildItem);
102 }
103
RemoveWidget(CFWL_Widget * pWidget)104 void CFWL_WidgetMgr::RemoveWidget(CFWL_Widget* pWidget) {
105 DCHECK(pWidget);
106 Item* pItem = GetWidgetMgrItem(pWidget);
107 if (!pItem)
108 return;
109
110 while (pItem->GetFirstChild())
111 RemoveWidget(pItem->GetFirstChild()->pWidget);
112
113 pItem->RemoveSelfIfParented();
114 m_mapWidgetItem.erase(pWidget);
115 }
116
GetWidgetAtPoint(CFWL_Widget * parent,const CFX_PointF & point) const117 CFWL_Widget* CFWL_WidgetMgr::GetWidgetAtPoint(CFWL_Widget* parent,
118 const CFX_PointF& point) const {
119 if (!parent)
120 return nullptr;
121
122 CFWL_Widget* child = GetLastChildWidget(parent);
123 while (child) {
124 if (child->IsVisible()) {
125 CFX_PointF pos = parent->GetMatrix().GetInverse().Transform(point);
126 CFX_RectF bounds = child->GetWidgetRect();
127 if (bounds.Contains(pos)) {
128 pos -= bounds.TopLeft();
129 return GetWidgetAtPoint(child, pos);
130 }
131 }
132 child = GetPriorSiblingWidget(child);
133 }
134 return parent;
135 }
136
GetDefaultButton(CFWL_Widget * pParent) const137 CFWL_Widget* CFWL_WidgetMgr::GetDefaultButton(CFWL_Widget* pParent) const {
138 if (pParent->GetClassID() == FWL_Type::PushButton &&
139 (pParent->GetStates() & FWL_STATE_PSB_Default)) {
140 return pParent;
141 }
142
143 CFWL_Widget* child = GetFirstChildWidget(pParent);
144 while (child) {
145 if (child->GetClassID() == FWL_Type::PushButton &&
146 (child->GetStates() & FWL_STATE_PSB_Default)) {
147 return child;
148 }
149 if (CFWL_Widget* find = GetDefaultButton(child))
150 return find;
151
152 child = GetNextSiblingWidget(child);
153 }
154 return nullptr;
155 }
156
GetWidgetMgrRootItem() const157 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::GetWidgetMgrRootItem() const {
158 return GetWidgetMgrItem(nullptr);
159 }
160
GetWidgetMgrItem(const CFWL_Widget * pWidget) const161 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::GetWidgetMgrItem(
162 const CFWL_Widget* pWidget) const {
163 auto it = m_mapWidgetItem.find(pWidget);
164 return it != m_mapWidgetItem.end() ? it->second : nullptr;
165 }
166
CreateWidgetMgrItem(CFWL_Widget * pWidget)167 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::CreateWidgetMgrItem(
168 CFWL_Widget* pWidget) {
169 auto* pItem = cppgc::MakeGarbageCollected<Item>(
170 m_pApp->GetHeap()->GetAllocationHandle(), pWidget);
171 m_mapWidgetItem[pWidget] = pItem;
172 return pItem;
173 }
174
GetAdapterPopupPos(CFWL_Widget * pWidget,float fMinHeight,float fMaxHeight,const CFX_RectF & rtAnchor,CFX_RectF * pPopupRect) const175 void CFWL_WidgetMgr::GetAdapterPopupPos(CFWL_Widget* pWidget,
176 float fMinHeight,
177 float fMaxHeight,
178 const CFX_RectF& rtAnchor,
179 CFX_RectF* pPopupRect) const {
180 m_pAdapter->GetPopupPos(pWidget, fMinHeight, fMaxHeight, rtAnchor,
181 pPopupRect);
182 }
183
OnProcessMessageToForm(CFWL_Message * pMessage)184 void CFWL_WidgetMgr::OnProcessMessageToForm(CFWL_Message* pMessage) {
185 CFWL_Widget* pDstWidget = pMessage->GetDstTarget();
186 if (!pDstWidget)
187 return;
188
189 CFWL_NoteDriver* pNoteDriver = pDstWidget->GetFWLApp()->GetNoteDriver();
190 pNoteDriver->ProcessMessage(pMessage);
191 }
192
OnDrawWidget(CFWL_Widget * pWidget,CFGAS_GEGraphics * pGraphics,const CFX_Matrix & matrix)193 void CFWL_WidgetMgr::OnDrawWidget(CFWL_Widget* pWidget,
194 CFGAS_GEGraphics* pGraphics,
195 const CFX_Matrix& matrix) {
196 if (!pWidget || !pGraphics)
197 return;
198
199 pWidget->GetDelegate()->OnDrawWidget(pGraphics, matrix);
200
201 CFX_RectF clipBounds = pGraphics->GetClipRect();
202 if (!clipBounds.IsEmpty())
203 DrawChildren(pWidget, clipBounds, pGraphics, matrix);
204 }
205
DrawChildren(CFWL_Widget * parent,const CFX_RectF & rtClip,CFGAS_GEGraphics * pGraphics,const CFX_Matrix & mtMatrix)206 void CFWL_WidgetMgr::DrawChildren(CFWL_Widget* parent,
207 const CFX_RectF& rtClip,
208 CFGAS_GEGraphics* pGraphics,
209 const CFX_Matrix& mtMatrix) {
210 if (!parent)
211 return;
212
213 CFWL_Widget* pNextChild = GetFirstChildWidget(parent);
214 while (pNextChild) {
215 CFWL_Widget* child = pNextChild;
216 pNextChild = GetNextSiblingWidget(child);
217 if (!child->IsVisible())
218 continue;
219
220 CFX_RectF rtWidget = child->GetWidgetRect();
221 if (rtWidget.IsEmpty())
222 continue;
223
224 CFX_Matrix widgetMatrix;
225 CFX_RectF clipBounds(rtWidget);
226 widgetMatrix.Concat(mtMatrix);
227 widgetMatrix.TranslatePrepend(rtWidget.left, rtWidget.top);
228
229 if (IFWL_WidgetDelegate* pDelegate = child->GetDelegate())
230 pDelegate->OnDrawWidget(pGraphics, widgetMatrix);
231
232 DrawChildren(child, clipBounds, pGraphics, widgetMatrix);
233 }
234 }
235
Item(CFWL_Widget * widget)236 CFWL_WidgetMgr::Item::Item(CFWL_Widget* widget) : pWidget(widget) {}
237
238 CFWL_WidgetMgr::Item::~Item() = default;
239
Trace(cppgc::Visitor * visitor) const240 void CFWL_WidgetMgr::Item::Trace(cppgc::Visitor* visitor) const {
241 GCedTreeNode<Item>::Trace(visitor);
242 visitor->Trace(pWidget);
243 }
244