1 // Copyright 2014 PDFium Authors. All rights reserved.
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_checkbox.h"
8
9 #include <algorithm>
10 #include <memory>
11 #include <utility>
12 #include <vector>
13
14 #include "third_party/base/ptr_util.h"
15 #include "xfa/fde/cfde_textout.h"
16 #include "xfa/fwl/cfwl_app.h"
17 #include "xfa/fwl/cfwl_event.h"
18 #include "xfa/fwl/cfwl_messagekey.h"
19 #include "xfa/fwl/cfwl_messagemouse.h"
20 #include "xfa/fwl/cfwl_notedriver.h"
21 #include "xfa/fwl/cfwl_themebackground.h"
22 #include "xfa/fwl/cfwl_themetext.h"
23 #include "xfa/fwl/cfwl_widgetmgr.h"
24 #include "xfa/fwl/fwl_widgetdef.h"
25 #include "xfa/fwl/ifwl_themeprovider.h"
26
27 namespace {
28
29 const int kCaptionMargin = 5;
30
31 } // namespace
32
CFWL_CheckBox(const CFWL_App * app)33 CFWL_CheckBox::CFWL_CheckBox(const CFWL_App* app)
34 : CFWL_Widget(app, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr) {
35 m_TTOStyles.single_line_ = true;
36 }
37
~CFWL_CheckBox()38 CFWL_CheckBox::~CFWL_CheckBox() {}
39
GetClassID() const40 FWL_Type CFWL_CheckBox::GetClassID() const {
41 return FWL_Type::CheckBox;
42 }
43
SetBoxSize(float fHeight)44 void CFWL_CheckBox::SetBoxSize(float fHeight) {
45 m_fBoxHeight = fHeight;
46 }
47
Update()48 void CFWL_CheckBox::Update() {
49 if (IsLocked())
50 return;
51 if (!m_pProperties->m_pThemeProvider)
52 m_pProperties->m_pThemeProvider = GetAvailableTheme();
53
54 UpdateTextOutStyles();
55 Layout();
56 }
57
DrawWidget(CXFA_Graphics * pGraphics,const CFX_Matrix & matrix)58 void CFWL_CheckBox::DrawWidget(CXFA_Graphics* pGraphics,
59 const CFX_Matrix& matrix) {
60 if (!pGraphics)
61 return;
62
63 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
64 if (!pTheme)
65 return;
66
67 if (HasBorder())
68 DrawBorder(pGraphics, CFWL_Part::Border, pTheme, matrix);
69
70 int32_t dwStates = GetPartStates();
71
72 CFWL_ThemeBackground param;
73 param.m_pWidget = this;
74 param.m_iPart = CFWL_Part::Background;
75 param.m_dwStates = dwStates;
76 param.m_pGraphics = pGraphics;
77 param.m_matrix.Concat(matrix);
78 param.m_rtPart = m_rtClient;
79 if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
80
81 param.m_pRtData = &m_rtFocus;
82 pTheme->DrawBackground(param);
83
84 param.m_iPart = CFWL_Part::CheckBox;
85 param.m_rtPart = m_rtBox;
86 pTheme->DrawBackground(param);
87
88 CFWL_ThemeText textParam;
89 textParam.m_pWidget = this;
90 textParam.m_iPart = CFWL_Part::Caption;
91 textParam.m_dwStates = dwStates;
92 textParam.m_pGraphics = pGraphics;
93 textParam.m_matrix.Concat(matrix);
94 textParam.m_rtPart = m_rtCaption;
95 textParam.m_wsText = L"Check box";
96 textParam.m_dwTTOStyles = m_TTOStyles;
97 textParam.m_iTTOAlign = m_iTTOAlign;
98 pTheme->DrawText(textParam);
99 }
100
SetCheckState(int32_t iCheck)101 void CFWL_CheckBox::SetCheckState(int32_t iCheck) {
102 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
103 switch (iCheck) {
104 case 1:
105 m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
106 break;
107 case 2:
108 if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
109 m_pProperties->m_dwStates |= FWL_STATE_CKB_Neutral;
110 break;
111 default:
112 break;
113 }
114 RepaintRect(m_rtClient);
115 }
116
Layout()117 void CFWL_CheckBox::Layout() {
118 m_pProperties->m_rtWidget.width =
119 FXSYS_roundf(m_pProperties->m_rtWidget.width);
120 m_pProperties->m_rtWidget.height =
121 FXSYS_roundf(m_pProperties->m_rtWidget.height);
122 m_rtClient = GetClientRect();
123
124 float fTextLeft = m_rtClient.left + m_fBoxHeight;
125 m_rtBox = CFX_RectF(m_rtClient.TopLeft(), m_fBoxHeight, m_fBoxHeight);
126 m_rtCaption = CFX_RectF(fTextLeft, m_rtClient.top,
127 m_rtClient.right() - fTextLeft, m_rtClient.height);
128 m_rtCaption.Inflate(-kCaptionMargin, -kCaptionMargin);
129
130 CFX_RectF rtFocus = m_rtCaption;
131 CalcTextRect(L"Check box", m_pProperties->m_pThemeProvider.Get(), m_TTOStyles,
132 m_iTTOAlign, &rtFocus);
133
134 m_rtFocus = CFX_RectF(m_rtCaption.TopLeft(),
135 std::max(m_rtCaption.width, rtFocus.width),
136 std::min(m_rtCaption.height, rtFocus.height));
137 m_rtFocus.Inflate(1, 1);
138 }
139
GetPartStates() const140 uint32_t CFWL_CheckBox::GetPartStates() const {
141 int32_t dwStates = CFWL_PartState_Normal;
142 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
143 FWL_STATE_CKB_Neutral) {
144 dwStates = CFWL_PartState_Neutral;
145 } else if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
146 FWL_STATE_CKB_Checked) {
147 dwStates = CFWL_PartState_Checked;
148 }
149 if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
150 dwStates |= CFWL_PartState_Disabled;
151 else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered)
152 dwStates |= CFWL_PartState_Hovered;
153 else if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed)
154 dwStates |= CFWL_PartState_Pressed;
155 else
156 dwStates |= CFWL_PartState_Normal;
157 if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
158 dwStates |= CFWL_PartState_Focused;
159 return dwStates;
160 }
161
UpdateTextOutStyles()162 void CFWL_CheckBox::UpdateTextOutStyles() {
163 m_iTTOAlign = FDE_TextAlignment::kTopLeft;
164 m_TTOStyles.Reset();
165 m_TTOStyles.single_line_ = true;
166 }
167
NextStates()168 void CFWL_CheckBox::NextStates() {
169 uint32_t dwFirststate = m_pProperties->m_dwStates;
170 if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_RadioButton) {
171 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
172 FWL_STATE_CKB_Unchecked) {
173 m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
174 }
175 } else {
176 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
177 FWL_STATE_CKB_Neutral) {
178 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
179 if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
180 m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
181 } else if ((m_pProperties->m_dwStates & FWL_STATE_CKB_CheckMask) ==
182 FWL_STATE_CKB_Checked) {
183 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_CheckMask;
184 } else {
185 if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_3State)
186 m_pProperties->m_dwStates |= FWL_STATE_CKB_Neutral;
187 else
188 m_pProperties->m_dwStates |= FWL_STATE_CKB_Checked;
189 }
190 }
191
192 RepaintRect(m_rtClient);
193 if (dwFirststate == m_pProperties->m_dwStates)
194 return;
195
196 CFWL_Event wmCheckBoxState(CFWL_Event::Type::CheckStateChanged, this);
197 DispatchEvent(&wmCheckBoxState);
198 }
199
OnProcessMessage(CFWL_Message * pMessage)200 void CFWL_CheckBox::OnProcessMessage(CFWL_Message* pMessage) {
201 if (!pMessage)
202 return;
203
204 switch (pMessage->GetType()) {
205 case CFWL_Message::Type::SetFocus:
206 OnFocusChanged(true);
207 break;
208 case CFWL_Message::Type::KillFocus:
209 OnFocusChanged(false);
210 break;
211 case CFWL_Message::Type::Mouse: {
212 CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
213 switch (pMsg->m_dwCmd) {
214 case FWL_MouseCommand::LeftButtonDown:
215 OnLButtonDown();
216 break;
217 case FWL_MouseCommand::LeftButtonUp:
218 OnLButtonUp(pMsg);
219 break;
220 case FWL_MouseCommand::Move:
221 OnMouseMove(pMsg);
222 break;
223 case FWL_MouseCommand::Leave:
224 OnMouseLeave();
225 break;
226 default:
227 break;
228 }
229 break;
230 }
231 case CFWL_Message::Type::Key: {
232 CFWL_MessageKey* pKey = static_cast<CFWL_MessageKey*>(pMessage);
233 if (pKey->m_dwCmd == FWL_KeyCommand::KeyDown)
234 OnKeyDown(pKey);
235 break;
236 }
237 default:
238 break;
239 }
240 // Dst target could be |this|, continue only if not destroyed by above.
241 if (pMessage->GetDstTarget())
242 CFWL_Widget::OnProcessMessage(pMessage);
243 }
244
OnDrawWidget(CXFA_Graphics * pGraphics,const CFX_Matrix & matrix)245 void CFWL_CheckBox::OnDrawWidget(CXFA_Graphics* pGraphics,
246 const CFX_Matrix& matrix) {
247 DrawWidget(pGraphics, matrix);
248 }
249
OnFocusChanged(bool bSet)250 void CFWL_CheckBox::OnFocusChanged(bool bSet) {
251 if (bSet)
252 m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
253 else
254 m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
255
256 RepaintRect(m_rtClient);
257 }
258
OnLButtonDown()259 void CFWL_CheckBox::OnLButtonDown() {
260 if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
261 return;
262
263 m_bBtnDown = true;
264 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
265 m_pProperties->m_dwStates |= FWL_STATE_CKB_Pressed;
266 RepaintRect(m_rtClient);
267 }
268
OnLButtonUp(CFWL_MessageMouse * pMsg)269 void CFWL_CheckBox::OnLButtonUp(CFWL_MessageMouse* pMsg) {
270 if (!m_bBtnDown)
271 return;
272
273 m_bBtnDown = false;
274 if (!m_rtClient.Contains(pMsg->m_pos))
275 return;
276
277 m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
278 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Pressed;
279 NextStates();
280 }
281
OnMouseMove(CFWL_MessageMouse * pMsg)282 void CFWL_CheckBox::OnMouseMove(CFWL_MessageMouse* pMsg) {
283 if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
284 return;
285
286 bool bRepaint = false;
287 if (m_bBtnDown) {
288 if (m_rtClient.Contains(pMsg->m_pos)) {
289 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed) == 0) {
290 bRepaint = true;
291 m_pProperties->m_dwStates |= FWL_STATE_CKB_Pressed;
292 }
293 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered)) {
294 bRepaint = true;
295 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
296 }
297 } else {
298 if (m_pProperties->m_dwStates & FWL_STATE_CKB_Pressed) {
299 bRepaint = true;
300 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Pressed;
301 }
302 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered) == 0) {
303 bRepaint = true;
304 m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
305 }
306 }
307 } else {
308 if (m_rtClient.Contains(pMsg->m_pos)) {
309 if ((m_pProperties->m_dwStates & FWL_STATE_CKB_Hovered) == 0) {
310 bRepaint = true;
311 m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
312 }
313 }
314 }
315 if (bRepaint)
316 RepaintRect(m_rtBox);
317 }
318
OnMouseLeave()319 void CFWL_CheckBox::OnMouseLeave() {
320 if (m_bBtnDown)
321 m_pProperties->m_dwStates |= FWL_STATE_CKB_Hovered;
322 else
323 m_pProperties->m_dwStates &= ~FWL_STATE_CKB_Hovered;
324
325 RepaintRect(m_rtBox);
326 }
327
OnKeyDown(CFWL_MessageKey * pMsg)328 void CFWL_CheckBox::OnKeyDown(CFWL_MessageKey* pMsg) {
329 if (pMsg->m_dwKeyCode == XFA_FWL_VKEY_Tab)
330 return;
331 if (pMsg->m_dwKeyCode == XFA_FWL_VKEY_Return ||
332 pMsg->m_dwKeyCode == XFA_FWL_VKEY_Space) {
333 NextStates();
334 }
335 }
336