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 "core/fxcrt/check.h"
11 #include "fxjs/gc/container_trace.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
17 namespace pdfium {
18
CFWL_WidgetMgr(AdapterIface * pAdapter,CFWL_App * pApp)19 CFWL_WidgetMgr::CFWL_WidgetMgr(AdapterIface* pAdapter, CFWL_App* pApp)
20 : m_pAdapter(pAdapter), m_pApp(pApp) {
21 DCHECK(m_pAdapter);
22 m_mapWidgetItem[nullptr] = cppgc::MakeGarbageCollected<Item>(
23 pApp->GetHeap()->GetAllocationHandle(), nullptr);
24 }
25
26 CFWL_WidgetMgr::~CFWL_WidgetMgr() = default;
27
Trace(cppgc::Visitor * visitor) const28 void CFWL_WidgetMgr::Trace(cppgc::Visitor* visitor) const {
29 visitor->Trace(m_pApp);
30 visitor->Trace(m_pAdapter);
31 ContainerTrace(visitor, m_mapWidgetItem);
32 }
33
GetParentWidget(const CFWL_Widget * pWidget) const34 CFWL_Widget* CFWL_WidgetMgr::GetParentWidget(const CFWL_Widget* pWidget) const {
35 Item* pItem = GetWidgetMgrItem(pWidget);
36 if (!pItem)
37 return nullptr;
38
39 Item* pParent = pItem->GetParent();
40 return pParent ? pParent->pWidget : nullptr;
41 }
42
GetPriorSiblingWidget(CFWL_Widget * pWidget) const43 CFWL_Widget* CFWL_WidgetMgr::GetPriorSiblingWidget(CFWL_Widget* pWidget) const {
44 Item* pItem = GetWidgetMgrItem(pWidget);
45 if (!pItem)
46 return nullptr;
47
48 Item* pSibling = pItem->GetPrevSibling();
49 return pSibling ? pSibling->pWidget : nullptr;
50 }
51
GetNextSiblingWidget(CFWL_Widget * pWidget) const52 CFWL_Widget* CFWL_WidgetMgr::GetNextSiblingWidget(CFWL_Widget* pWidget) const {
53 Item* pItem = GetWidgetMgrItem(pWidget);
54 if (!pItem)
55 return nullptr;
56
57 Item* pSibling = pItem->GetNextSibling();
58 return pSibling ? pSibling->pWidget : nullptr;
59 }
60
GetFirstChildWidget(CFWL_Widget * pWidget) const61 CFWL_Widget* CFWL_WidgetMgr::GetFirstChildWidget(CFWL_Widget* pWidget) const {
62 Item* pItem = GetWidgetMgrItem(pWidget);
63 if (!pItem)
64 return nullptr;
65
66 Item* pChild = pItem->GetFirstChild();
67 return pChild ? pChild->pWidget : nullptr;
68 }
69
GetLastChildWidget(CFWL_Widget * pWidget) const70 CFWL_Widget* CFWL_WidgetMgr::GetLastChildWidget(CFWL_Widget* pWidget) const {
71 Item* pItem = GetWidgetMgrItem(pWidget);
72 if (!pItem)
73 return nullptr;
74
75 Item* pChild = pItem->GetLastChild();
76 return pChild ? pChild->pWidget : nullptr;
77 }
78
RepaintWidget(CFWL_Widget * pWidget,const CFX_RectF & rect)79 void CFWL_WidgetMgr::RepaintWidget(CFWL_Widget* pWidget,
80 const CFX_RectF& rect) {
81 CFWL_Widget* pNative = pWidget;
82 CFX_RectF transformedRect = rect;
83 CFWL_Widget* pOuter = pWidget->GetOuter();
84 while (pOuter) {
85 CFX_RectF rtTemp = pNative->GetWidgetRect();
86 transformedRect.left += rtTemp.left;
87 transformedRect.top += rtTemp.top;
88 pNative = pOuter;
89 pOuter = pOuter->GetOuter();
90 }
91 m_pAdapter->RepaintWidget(pNative);
92 }
93
InsertWidget(CFWL_Widget * pParent,CFWL_Widget * pChild)94 void CFWL_WidgetMgr::InsertWidget(CFWL_Widget* pParent, CFWL_Widget* pChild) {
95 Item* pParentItem = GetWidgetMgrItem(pParent);
96 if (!pParentItem) {
97 pParentItem = CreateWidgetMgrItem(pParent);
98 GetWidgetMgrRootItem()->AppendLastChild(pParentItem);
99 }
100 Item* pChildItem = GetWidgetMgrItem(pChild);
101 if (!pChildItem)
102 pChildItem = CreateWidgetMgrItem(pChild);
103 pParentItem->AppendLastChild(pChildItem);
104 }
105
RemoveWidget(CFWL_Widget * pWidget)106 void CFWL_WidgetMgr::RemoveWidget(CFWL_Widget* pWidget) {
107 DCHECK(pWidget);
108 Item* pItem = GetWidgetMgrItem(pWidget);
109 if (!pItem)
110 return;
111
112 while (pItem->GetFirstChild())
113 RemoveWidget(pItem->GetFirstChild()->pWidget);
114
115 pItem->RemoveSelfIfParented();
116 m_mapWidgetItem.erase(pWidget);
117 }
118
GetWidgetAtPoint(CFWL_Widget * parent,const CFX_PointF & point) const119 CFWL_Widget* CFWL_WidgetMgr::GetWidgetAtPoint(CFWL_Widget* parent,
120 const CFX_PointF& point) const {
121 if (!parent)
122 return nullptr;
123
124 CFWL_Widget* child = GetLastChildWidget(parent);
125 while (child) {
126 if (child->IsVisible()) {
127 CFX_PointF pos = parent->GetMatrix().GetInverse().Transform(point);
128 CFX_RectF bounds = child->GetWidgetRect();
129 if (bounds.Contains(pos)) {
130 pos -= bounds.TopLeft();
131 return GetWidgetAtPoint(child, pos);
132 }
133 }
134 child = GetPriorSiblingWidget(child);
135 }
136 return parent;
137 }
138
GetDefaultButton(CFWL_Widget * pParent) const139 CFWL_Widget* CFWL_WidgetMgr::GetDefaultButton(CFWL_Widget* pParent) const {
140 if (pParent->GetClassID() == FWL_Type::PushButton &&
141 (pParent->GetStates() & FWL_STATE_PSB_Default)) {
142 return pParent;
143 }
144
145 CFWL_Widget* child = GetFirstChildWidget(pParent);
146 while (child) {
147 if (child->GetClassID() == FWL_Type::PushButton &&
148 (child->GetStates() & FWL_STATE_PSB_Default)) {
149 return child;
150 }
151 if (CFWL_Widget* find = GetDefaultButton(child))
152 return find;
153
154 child = GetNextSiblingWidget(child);
155 }
156 return nullptr;
157 }
158
GetWidgetMgrRootItem() const159 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::GetWidgetMgrRootItem() const {
160 return GetWidgetMgrItem(nullptr);
161 }
162
GetWidgetMgrItem(const CFWL_Widget * pWidget) const163 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::GetWidgetMgrItem(
164 const CFWL_Widget* pWidget) const {
165 auto it = m_mapWidgetItem.find(pWidget);
166 return it != m_mapWidgetItem.end() ? it->second : nullptr;
167 }
168
CreateWidgetMgrItem(CFWL_Widget * pWidget)169 CFWL_WidgetMgr::Item* CFWL_WidgetMgr::CreateWidgetMgrItem(
170 CFWL_Widget* pWidget) {
171 auto* pItem = cppgc::MakeGarbageCollected<Item>(
172 m_pApp->GetHeap()->GetAllocationHandle(), pWidget);
173 m_mapWidgetItem[pWidget] = pItem;
174 return pItem;
175 }
176
GetAdapterPopupPos(CFWL_Widget * pWidget,float fMinHeight,float fMaxHeight,const CFX_RectF & rtAnchor,CFX_RectF * pPopupRect) const177 void CFWL_WidgetMgr::GetAdapterPopupPos(CFWL_Widget* pWidget,
178 float fMinHeight,
179 float fMaxHeight,
180 const CFX_RectF& rtAnchor,
181 CFX_RectF* pPopupRect) const {
182 m_pAdapter->GetPopupPos(pWidget, fMinHeight, fMaxHeight, rtAnchor,
183 pPopupRect);
184 }
185
OnProcessMessageToForm(CFWL_Message * pMessage)186 void CFWL_WidgetMgr::OnProcessMessageToForm(CFWL_Message* pMessage) {
187 CFWL_Widget* pDstWidget = pMessage->GetDstTarget();
188 if (!pDstWidget)
189 return;
190
191 CFWL_NoteDriver* pNoteDriver = pDstWidget->GetFWLApp()->GetNoteDriver();
192 pNoteDriver->ProcessMessage(pMessage);
193 }
194
OnDrawWidget(CFWL_Widget * pWidget,CFGAS_GEGraphics * pGraphics,const CFX_Matrix & matrix)195 void CFWL_WidgetMgr::OnDrawWidget(CFWL_Widget* pWidget,
196 CFGAS_GEGraphics* pGraphics,
197 const CFX_Matrix& matrix) {
198 if (!pWidget || !pGraphics)
199 return;
200
201 pWidget->GetDelegate()->OnDrawWidget(pGraphics, matrix);
202
203 CFX_RectF clipBounds = pGraphics->GetClipRect();
204 if (!clipBounds.IsEmpty())
205 DrawChildren(pWidget, clipBounds, pGraphics, matrix);
206 }
207
DrawChildren(CFWL_Widget * parent,const CFX_RectF & rtClip,CFGAS_GEGraphics * pGraphics,const CFX_Matrix & mtMatrix)208 void CFWL_WidgetMgr::DrawChildren(CFWL_Widget* parent,
209 const CFX_RectF& rtClip,
210 CFGAS_GEGraphics* pGraphics,
211 const CFX_Matrix& mtMatrix) {
212 if (!parent)
213 return;
214
215 CFWL_Widget* pNextChild = GetFirstChildWidget(parent);
216 while (pNextChild) {
217 CFWL_Widget* child = pNextChild;
218 pNextChild = GetNextSiblingWidget(child);
219 if (!child->IsVisible())
220 continue;
221
222 CFX_RectF rtWidget = child->GetWidgetRect();
223 if (rtWidget.IsEmpty())
224 continue;
225
226 CFX_Matrix widgetMatrix;
227 CFX_RectF clipBounds(rtWidget);
228 widgetMatrix.Concat(mtMatrix);
229 widgetMatrix.TranslatePrepend(rtWidget.left, rtWidget.top);
230
231 if (IFWL_WidgetDelegate* pDelegate = child->GetDelegate())
232 pDelegate->OnDrawWidget(pGraphics, widgetMatrix);
233
234 DrawChildren(child, clipBounds, pGraphics, widgetMatrix);
235 }
236 }
237
Item(CFWL_Widget * widget)238 CFWL_WidgetMgr::Item::Item(CFWL_Widget* widget) : pWidget(widget) {}
239
240 CFWL_WidgetMgr::Item::~Item() = default;
241
Trace(cppgc::Visitor * visitor) const242 void CFWL_WidgetMgr::Item::Trace(cppgc::Visitor* visitor) const {
243 GCedTreeNode<Item>::Trace(visitor);
244 visitor->Trace(pWidget);
245 }
246
247 } // namespace pdfium
248