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_widget.h"
8
9 #include <algorithm>
10 #include <utility>
11 #include <vector>
12
13 #include "third_party/base/check.h"
14 #include "v8/include/cppgc/visitor.h"
15 #include "xfa/fde/cfde_textout.h"
16 #include "xfa/fwl/cfwl_app.h"
17 #include "xfa/fwl/cfwl_combobox.h"
18 #include "xfa/fwl/cfwl_event.h"
19 #include "xfa/fwl/cfwl_eventmouse.h"
20 #include "xfa/fwl/cfwl_messagekey.h"
21 #include "xfa/fwl/cfwl_messagekillfocus.h"
22 #include "xfa/fwl/cfwl_messagemouse.h"
23 #include "xfa/fwl/cfwl_messagemousewheel.h"
24 #include "xfa/fwl/cfwl_messagesetfocus.h"
25 #include "xfa/fwl/cfwl_notedriver.h"
26 #include "xfa/fwl/cfwl_themebackground.h"
27 #include "xfa/fwl/cfwl_themepart.h"
28 #include "xfa/fwl/cfwl_themetext.h"
29 #include "xfa/fwl/cfwl_widgetmgr.h"
30 #include "xfa/fwl/ifwl_themeprovider.h"
31
32 namespace {
33
34 constexpr float kCalcHeight = 2048.0f;
35 constexpr float kCalcWidth = 2048.0f;
36 constexpr float kCalcMultiLineDefWidth = 120.0f;
37
38 } // namespace
39
CFWL_Widget(CFWL_App * app,const Properties & properties,CFWL_Widget * pOuter)40 CFWL_Widget::CFWL_Widget(CFWL_App* app,
41 const Properties& properties,
42 CFWL_Widget* pOuter)
43 : m_Properties(properties),
44 m_pFWLApp(app),
45 m_pWidgetMgr(app->GetWidgetMgr()),
46 m_pOuter(pOuter) {
47 m_pWidgetMgr->InsertWidget(m_pOuter, this);
48 }
49
50 CFWL_Widget::~CFWL_Widget() = default;
51
PreFinalize()52 void CFWL_Widget::PreFinalize() {
53 CHECK(!IsLocked()); // Prefer hard stop to UaF.
54 NotifyDriver();
55 m_pWidgetMgr->RemoveWidget(this);
56 }
57
Trace(cppgc::Visitor * visitor) const58 void CFWL_Widget::Trace(cppgc::Visitor* visitor) const {
59 visitor->Trace(m_pAdapterIface);
60 visitor->Trace(m_pFWLApp);
61 visitor->Trace(m_pWidgetMgr);
62 visitor->Trace(m_pDelegate);
63 visitor->Trace(m_pOuter);
64 }
65
IsForm() const66 bool CFWL_Widget::IsForm() const {
67 return false;
68 }
69
GetAutosizedWidgetRect()70 CFX_RectF CFWL_Widget::GetAutosizedWidgetRect() {
71 return CFX_RectF();
72 }
73
GetWidgetRect()74 CFX_RectF CFWL_Widget::GetWidgetRect() {
75 return m_WidgetRect;
76 }
77
InflateWidgetRect(CFX_RectF & rect)78 void CFWL_Widget::InflateWidgetRect(CFX_RectF& rect) {
79 if (!HasBorder())
80 return;
81
82 float fBorder = GetCXBorderSize();
83 rect.Inflate(fBorder, fBorder);
84 }
85
SetWidgetRect(const CFX_RectF & rect)86 void CFWL_Widget::SetWidgetRect(const CFX_RectF& rect) {
87 m_WidgetRect = rect;
88 }
89
GetClientRect()90 CFX_RectF CFWL_Widget::GetClientRect() {
91 return GetEdgeRect();
92 }
93
ModifyStyles(uint32_t dwStylesAdded,uint32_t dwStylesRemoved)94 void CFWL_Widget::ModifyStyles(uint32_t dwStylesAdded,
95 uint32_t dwStylesRemoved) {
96 m_Properties.m_dwStyles &= ~dwStylesRemoved;
97 m_Properties.m_dwStyles |= dwStylesAdded;
98 }
99
ModifyStyleExts(uint32_t dwStyleExtsAdded,uint32_t dwStyleExtsRemoved)100 void CFWL_Widget::ModifyStyleExts(uint32_t dwStyleExtsAdded,
101 uint32_t dwStyleExtsRemoved) {
102 m_Properties.m_dwStyleExts &= ~dwStyleExtsRemoved;
103 m_Properties.m_dwStyleExts |= dwStyleExtsAdded;
104 }
105
NotifyHideChildWidget(CFWL_WidgetMgr * widgetMgr,CFWL_Widget * widget,CFWL_NoteDriver * noteDriver)106 static void NotifyHideChildWidget(CFWL_WidgetMgr* widgetMgr,
107 CFWL_Widget* widget,
108 CFWL_NoteDriver* noteDriver) {
109 CFWL_Widget* child = widgetMgr->GetFirstChildWidget(widget);
110 while (child) {
111 noteDriver->NotifyTargetHide(child);
112 NotifyHideChildWidget(widgetMgr, child, noteDriver);
113 child = widgetMgr->GetNextSiblingWidget(child);
114 }
115 }
116
SetStates(uint32_t dwStates)117 void CFWL_Widget::SetStates(uint32_t dwStates) {
118 m_Properties.m_dwStates |= dwStates;
119 if (IsVisible())
120 return;
121
122 CFWL_NoteDriver* noteDriver = GetFWLApp()->GetNoteDriver();
123 noteDriver->NotifyTargetHide(this);
124
125 CFWL_WidgetMgr* widgetMgr = GetFWLApp()->GetWidgetMgr();
126 CFWL_Widget* child = widgetMgr->GetFirstChildWidget(this);
127 while (child) {
128 noteDriver->NotifyTargetHide(child);
129 NotifyHideChildWidget(widgetMgr, child, noteDriver);
130 child = widgetMgr->GetNextSiblingWidget(child);
131 }
132 }
133
RemoveStates(uint32_t dwStates)134 void CFWL_Widget::RemoveStates(uint32_t dwStates) {
135 m_Properties.m_dwStates &= ~dwStates;
136 }
137
HitTest(const CFX_PointF & point)138 FWL_WidgetHit CFWL_Widget::HitTest(const CFX_PointF& point) {
139 if (GetClientRect().Contains(point))
140 return FWL_WidgetHit::Client;
141 if (HasBorder() && GetRelativeRect().Contains(point))
142 return FWL_WidgetHit::Border;
143 return FWL_WidgetHit::Unknown;
144 }
145
TransformTo(CFWL_Widget * pWidget,const CFX_PointF & point)146 CFX_PointF CFWL_Widget::TransformTo(CFWL_Widget* pWidget,
147 const CFX_PointF& point) {
148 CFX_SizeF szOffset;
149 if (IsParent(pWidget)) {
150 szOffset = GetOffsetFromParent(pWidget);
151 } else {
152 szOffset = pWidget->GetOffsetFromParent(this);
153 szOffset.width = -szOffset.width;
154 szOffset.height = -szOffset.height;
155 }
156 return point + CFX_PointF(szOffset.width, szOffset.height);
157 }
158
GetMatrix() const159 CFX_Matrix CFWL_Widget::GetMatrix() const {
160 CFWL_Widget* parent = GetParent();
161 std::vector<CFWL_Widget*> parents;
162 while (parent) {
163 parents.push_back(parent);
164 parent = parent->GetParent();
165 }
166
167 CFX_Matrix matrix;
168 for (size_t i = parents.size(); i >= 2; i--) {
169 CFX_RectF rect = parents[i - 2]->GetWidgetRect();
170 matrix.TranslatePrepend(rect.left, rect.top);
171 }
172 return matrix;
173 }
174
GetThemeProvider() const175 IFWL_ThemeProvider* CFWL_Widget::GetThemeProvider() const {
176 return GetFWLApp()->GetThemeProvider();
177 }
178
IsEnabled() const179 bool CFWL_Widget::IsEnabled() const {
180 return (m_Properties.m_dwStates & FWL_STATE_WGT_Disabled) == 0;
181 }
182
HasBorder() const183 bool CFWL_Widget::HasBorder() const {
184 return !!(m_Properties.m_dwStyles & FWL_STYLE_WGT_Border);
185 }
186
IsVisible() const187 bool CFWL_Widget::IsVisible() const {
188 return !(m_Properties.m_dwStates & FWL_STATE_WGT_Invisible);
189 }
190
IsOverLapper() const191 bool CFWL_Widget::IsOverLapper() const {
192 return (m_Properties.m_dwStyles & FWL_STYLE_WGT_WindowTypeMask) ==
193 FWL_STYLE_WGT_OverLapper;
194 }
195
IsPopup() const196 bool CFWL_Widget::IsPopup() const {
197 return !!(m_Properties.m_dwStyles & FWL_STYLE_WGT_Popup);
198 }
199
IsChild() const200 bool CFWL_Widget::IsChild() const {
201 return !!(m_Properties.m_dwStyles & FWL_STYLE_WGT_Child);
202 }
203
GetOutmost() const204 CFWL_Widget* CFWL_Widget::GetOutmost() const {
205 CFWL_Widget* pOuter = const_cast<CFWL_Widget*>(this);
206 while (pOuter->GetOuter())
207 pOuter = pOuter->GetOuter();
208 return pOuter;
209 }
210
GetEdgeRect() const211 CFX_RectF CFWL_Widget::GetEdgeRect() const {
212 CFX_RectF rtEdge(0, 0, m_WidgetRect.width, m_WidgetRect.height);
213 if (HasBorder())
214 rtEdge.Deflate(GetCXBorderSize(), GetCYBorderSize());
215 return rtEdge;
216 }
217
GetCXBorderSize() const218 float CFWL_Widget::GetCXBorderSize() const {
219 return GetThemeProvider()->GetCXBorderSize();
220 }
221
GetCYBorderSize() const222 float CFWL_Widget::GetCYBorderSize() const {
223 return GetThemeProvider()->GetCYBorderSize();
224 }
225
GetRelativeRect() const226 CFX_RectF CFWL_Widget::GetRelativeRect() const {
227 return CFX_RectF(0, 0, m_WidgetRect.width, m_WidgetRect.height);
228 }
229
CalcTextSize(const WideString & wsText,bool bMultiLine)230 CFX_SizeF CFWL_Widget::CalcTextSize(const WideString& wsText, bool bMultiLine) {
231 CFWL_ThemeText calPart(CFWL_ThemePart::Part::kNone, this, nullptr);
232 calPart.m_wsText = wsText;
233 if (bMultiLine)
234 calPart.m_dwTTOStyles.line_wrap_ = true;
235 else
236 calPart.m_dwTTOStyles.single_line_ = true;
237
238 calPart.m_iTTOAlign = FDE_TextAlignment::kTopLeft;
239 float fWidth = bMultiLine ? kCalcMultiLineDefWidth : kCalcWidth;
240 CFX_RectF rect(0, 0, fWidth, kCalcHeight);
241 GetThemeProvider()->CalcTextRect(calPart, &rect);
242 return CFX_SizeF(rect.width, rect.height);
243 }
244
CalcTextRect(const WideString & wsText,const FDE_TextStyle & dwTTOStyles,FDE_TextAlignment iTTOAlign,CFX_RectF * pRect)245 void CFWL_Widget::CalcTextRect(const WideString& wsText,
246 const FDE_TextStyle& dwTTOStyles,
247 FDE_TextAlignment iTTOAlign,
248 CFX_RectF* pRect) {
249 CFWL_ThemeText calPart(CFWL_ThemePart::Part::kNone, this, nullptr);
250 calPart.m_wsText = wsText;
251 calPart.m_dwTTOStyles = dwTTOStyles;
252 calPart.m_iTTOAlign = iTTOAlign;
253 GetThemeProvider()->CalcTextRect(calPart, pRect);
254 }
255
SetGrab(bool bSet)256 void CFWL_Widget::SetGrab(bool bSet) {
257 CFWL_NoteDriver* pDriver = GetFWLApp()->GetNoteDriver();
258 pDriver->SetGrab(bSet ? this : nullptr);
259 }
260
UnregisterEventTarget()261 void CFWL_Widget::UnregisterEventTarget() {
262 CFWL_NoteDriver* pNoteDriver = GetFWLApp()->GetNoteDriver();
263 pNoteDriver->UnregisterEventTarget(this);
264 }
265
DispatchEvent(CFWL_Event * pEvent)266 void CFWL_Widget::DispatchEvent(CFWL_Event* pEvent) {
267 if (m_pOuter) {
268 m_pOuter->GetDelegate()->OnProcessEvent(pEvent);
269 return;
270 }
271 CFWL_NoteDriver* pNoteDriver = GetFWLApp()->GetNoteDriver();
272 pNoteDriver->SendEvent(pEvent);
273 }
274
RepaintRect(const CFX_RectF & pRect)275 void CFWL_Widget::RepaintRect(const CFX_RectF& pRect) {
276 m_pWidgetMgr->RepaintWidget(this, pRect);
277 }
278
DrawBackground(CFGAS_GEGraphics * pGraphics,CFWL_ThemePart::Part iPartBk,const CFX_Matrix & mtMatrix)279 void CFWL_Widget::DrawBackground(CFGAS_GEGraphics* pGraphics,
280 CFWL_ThemePart::Part iPartBk,
281 const CFX_Matrix& mtMatrix) {
282 CFWL_ThemeBackground param(iPartBk, this, pGraphics);
283 param.m_matrix = mtMatrix;
284 param.m_PartRect = GetRelativeRect();
285 GetThemeProvider()->DrawBackground(param);
286 }
287
DrawBorder(CFGAS_GEGraphics * pGraphics,CFWL_ThemePart::Part iPartBorder,const CFX_Matrix & matrix)288 void CFWL_Widget::DrawBorder(CFGAS_GEGraphics* pGraphics,
289 CFWL_ThemePart::Part iPartBorder,
290 const CFX_Matrix& matrix) {
291 CFWL_ThemeBackground param(iPartBorder, this, pGraphics);
292 param.m_matrix = matrix;
293 param.m_PartRect = GetRelativeRect();
294 GetThemeProvider()->DrawBackground(param);
295 }
296
NotifyDriver()297 void CFWL_Widget::NotifyDriver() {
298 CFWL_NoteDriver* pDriver = GetFWLApp()->GetNoteDriver();
299 pDriver->NotifyTargetDestroy(this);
300 }
301
GetOffsetFromParent(CFWL_Widget * pParent)302 CFX_SizeF CFWL_Widget::GetOffsetFromParent(CFWL_Widget* pParent) {
303 if (pParent == this)
304 return CFX_SizeF();
305
306 CFX_SizeF szRet(m_WidgetRect.left, m_WidgetRect.top);
307 CFWL_WidgetMgr* pWidgetMgr = GetFWLApp()->GetWidgetMgr();
308 CFWL_Widget* pDstWidget = GetParent();
309 while (pDstWidget && pDstWidget != pParent) {
310 CFX_RectF rtDst = pDstWidget->GetWidgetRect();
311 szRet += CFX_SizeF(rtDst.left, rtDst.top);
312 pDstWidget = pWidgetMgr->GetParentWidget(pDstWidget);
313 }
314 return szRet;
315 }
316
IsParent(CFWL_Widget * pParent)317 bool CFWL_Widget::IsParent(CFWL_Widget* pParent) {
318 CFWL_Widget* pUpWidget = GetParent();
319 while (pUpWidget) {
320 if (pUpWidget == pParent)
321 return true;
322 pUpWidget = pUpWidget->GetParent();
323 }
324 return false;
325 }
326
OnProcessMessage(CFWL_Message * pMessage)327 void CFWL_Widget::OnProcessMessage(CFWL_Message* pMessage) {
328 CFWL_Widget* pWidget = pMessage->GetDstTarget();
329 if (!pWidget)
330 return;
331
332 switch (pMessage->GetType()) {
333 case CFWL_Message::Type::kMouse: {
334 CFWL_MessageMouse* pMsgMouse = static_cast<CFWL_MessageMouse*>(pMessage);
335 CFWL_EventMouse evt(pWidget, pWidget, pMsgMouse->m_dwCmd);
336 pWidget->DispatchEvent(&evt);
337 break;
338 }
339 default:
340 break;
341 }
342 }
343
OnProcessEvent(CFWL_Event * pEvent)344 void CFWL_Widget::OnProcessEvent(CFWL_Event* pEvent) {}
345
ScopedUpdateLock(CFWL_Widget * widget)346 CFWL_Widget::ScopedUpdateLock::ScopedUpdateLock(CFWL_Widget* widget)
347 : widget_(widget) {
348 widget_->LockUpdate();
349 }
350
~ScopedUpdateLock()351 CFWL_Widget::ScopedUpdateLock::~ScopedUpdateLock() {
352 widget_->UnlockUpdate();
353 }
354