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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/src/fwl/basewidget/fwl_scrollbarimp.h" | |
8 | |
9 #include "xfa/include/fwl/basewidget/fwl_scrollbar.h" | |
10 #include "xfa/include/fwl/core/fwl_theme.h" | |
11 #include "xfa/src/fwl/core/fwl_noteimp.h" | |
12 #include "xfa/src/fwl/core/fwl_targetimp.h" | |
13 #include "xfa/src/fwl/core/fwl_widgetimp.h" | |
14 | |
15 #define FWL_SCROLLBAR_Elapse 500 | |
16 #define FWL_SCROLLBAR_MinThumb 5 | |
17 | |
18 // static | |
19 IFWL_ScrollBar* IFWL_ScrollBar::Create( | |
20 const CFWL_WidgetImpProperties& properties, | |
21 IFWL_Widget* pOuter) { | |
22 IFWL_ScrollBar* pScrollBar = new IFWL_ScrollBar; | |
23 CFWL_ScrollBarImp* pScrollBarImpl = new CFWL_ScrollBarImp(properties, pOuter); | |
24 pScrollBar->SetImpl(pScrollBarImpl); | |
25 pScrollBarImpl->SetInterface(pScrollBar); | |
26 return pScrollBar; | |
27 } | |
28 IFWL_ScrollBar::IFWL_ScrollBar() {} | |
29 FX_BOOL IFWL_ScrollBar::IsVertical() { | |
30 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->IsVertical(); | |
31 } | |
32 FWL_ERR IFWL_ScrollBar::GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax) { | |
33 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetRange(fMin, fMax); | |
34 } | |
35 FWL_ERR IFWL_ScrollBar::SetRange(FX_FLOAT fMin, FX_FLOAT fMax) { | |
36 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetRange(fMin, fMax); | |
37 } | |
38 FX_FLOAT IFWL_ScrollBar::GetPageSize() { | |
39 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetPageSize(); | |
40 } | |
41 FWL_ERR IFWL_ScrollBar::SetPageSize(FX_FLOAT fPageSize) { | |
42 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetPageSize(fPageSize); | |
43 } | |
44 FX_FLOAT IFWL_ScrollBar::GetStepSize() { | |
45 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetStepSize(); | |
46 } | |
47 FWL_ERR IFWL_ScrollBar::SetStepSize(FX_FLOAT fStepSize) { | |
48 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetStepSize(fStepSize); | |
49 } | |
50 FX_FLOAT IFWL_ScrollBar::GetPos() { | |
51 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetPos(); | |
52 } | |
53 FWL_ERR IFWL_ScrollBar::SetPos(FX_FLOAT fPos) { | |
54 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetPos(fPos); | |
55 } | |
56 FX_FLOAT IFWL_ScrollBar::GetTrackPos() { | |
57 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetTrackPos(); | |
58 } | |
59 FWL_ERR IFWL_ScrollBar::SetTrackPos(FX_FLOAT fTrackPos) { | |
60 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetTrackPos(fTrackPos); | |
61 } | |
62 FX_BOOL IFWL_ScrollBar::DoScroll(FX_DWORD dwCode, FX_FLOAT fPos) { | |
63 return static_cast<CFWL_ScrollBarImp*>(GetImpl())->DoScroll(dwCode, fPos); | |
64 } | |
65 CFWL_ScrollBarImp::CFWL_ScrollBarImp(const CFWL_WidgetImpProperties& properties, | |
66 IFWL_Widget* pOuter) | |
67 : CFWL_WidgetImp(properties, pOuter), | |
68 m_hTimer(nullptr), | |
69 m_fRangeMin(0), | |
70 m_fRangeMax(-1), | |
71 m_fPageSize(0), | |
72 m_fStepSize(0), | |
73 m_fPos(0), | |
74 m_fTrackPos(0), | |
75 m_iMinButtonState(FWL_PARTSTATE_SCB_Normal), | |
76 m_iMaxButtonState(FWL_PARTSTATE_SCB_Normal), | |
77 m_iThumbButtonState(FWL_PARTSTATE_SCB_Normal), | |
78 m_iMinTrackState(FWL_PARTSTATE_SCB_Normal), | |
79 m_iMaxTrackState(FWL_PARTSTATE_SCB_Normal), | |
80 m_fLastTrackPos(0), | |
81 m_cpTrackPointX(0), | |
82 m_cpTrackPointY(0), | |
83 m_iMouseWheel(0), | |
84 m_bTrackMouseLeave(FALSE), | |
85 m_bMouseHover(FALSE), | |
86 m_bMouseDown(FALSE), | |
87 m_bRepaintThumb(FALSE), | |
88 m_fButtonLen(0), | |
89 m_bMinSize(FALSE), | |
90 m_bCustomLayout(FALSE), | |
91 m_fMinThumb(FWL_SCROLLBAR_MinThumb) { | |
92 m_rtClient.Reset(); | |
93 m_rtThumb.Reset(); | |
94 m_rtMinBtn.Reset(); | |
95 m_rtMaxBtn.Reset(); | |
96 m_rtMinTrack.Reset(); | |
97 m_rtMaxTrack.Reset(); | |
98 } | |
99 CFWL_ScrollBarImp::~CFWL_ScrollBarImp() {} | |
100 FWL_ERR CFWL_ScrollBarImp::GetClassName(CFX_WideString& wsClass) const { | |
101 wsClass = FWL_CLASS_ScrollBar; | |
102 return FWL_ERR_Succeeded; | |
103 } | |
104 FX_DWORD CFWL_ScrollBarImp::GetClassID() const { | |
105 return FWL_CLASSHASH_ScrollBar; | |
106 } | |
107 FWL_ERR CFWL_ScrollBarImp::Initialize() { | |
108 if (CFWL_WidgetImp::Initialize() != FWL_ERR_Succeeded) | |
109 return FWL_ERR_Indefinite; | |
110 m_pDelegate = new CFWL_ScrollBarImpDelegate(this); | |
111 return FWL_ERR_Succeeded; | |
112 } | |
113 FWL_ERR CFWL_ScrollBarImp::Finalize() { | |
114 delete m_pDelegate; | |
115 m_pDelegate = nullptr; | |
116 return CFWL_WidgetImp::Finalize(); | |
117 } | |
118 FWL_ERR CFWL_ScrollBarImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) { | |
119 if (bAutoSize) { | |
120 rect.Set(0, 0, 0, 0); | |
121 FX_FLOAT* pfMinWidth = static_cast<FX_FLOAT*>( | |
122 GetThemeCapacity(FWL_WGTCAPACITY_ScrollBarWidth)); | |
123 if (!pfMinWidth) | |
124 return FWL_ERR_Indefinite; | |
125 if (IsVertical()) { | |
126 rect.Set(0, 0, (*pfMinWidth), (*pfMinWidth) * 3); | |
127 } else { | |
128 rect.Set(0, 0, (*pfMinWidth) * 3, (*pfMinWidth)); | |
129 } | |
130 CFWL_WidgetImp::GetWidgetRect(rect, TRUE); | |
131 } else { | |
132 rect = m_pProperties->m_rtWidget; | |
133 } | |
134 return FWL_ERR_Succeeded; | |
135 } | |
136 FWL_ERR CFWL_ScrollBarImp::Update() { | |
137 if (IsLocked()) { | |
138 return FWL_ERR_Indefinite; | |
139 } | |
140 if (!m_pProperties->m_pThemeProvider) { | |
141 m_pProperties->m_pThemeProvider = GetAvailableTheme(); | |
142 } | |
143 Layout(); | |
144 return FWL_ERR_Succeeded; | |
145 } | |
146 FWL_ERR CFWL_ScrollBarImp::DrawWidget(CFX_Graphics* pGraphics, | |
147 const CFX_Matrix* pMatrix) { | |
148 if (!pGraphics) | |
149 return FWL_ERR_Indefinite; | |
150 if (!m_pProperties->m_pThemeProvider) | |
151 return FWL_ERR_Indefinite; | |
152 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; | |
153 if (HasBorder()) { | |
154 DrawBorder(pGraphics, FWL_PART_SCB_Border, pTheme, pMatrix); | |
155 } | |
156 if (HasEdge()) { | |
157 DrawEdge(pGraphics, FWL_PART_SCB_Edge, pTheme, pMatrix); | |
158 } | |
159 DrawTrack(pGraphics, pTheme, TRUE, pMatrix); | |
160 DrawTrack(pGraphics, pTheme, FALSE, pMatrix); | |
161 DrawArrowBtn(pGraphics, pTheme, TRUE, pMatrix); | |
162 DrawArrowBtn(pGraphics, pTheme, FALSE, pMatrix); | |
163 DrawThumb(pGraphics, pTheme, pMatrix); | |
164 return FWL_ERR_Succeeded; | |
165 } | |
166 inline FX_BOOL CFWL_ScrollBarImp::IsVertical() { | |
167 return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_SCB_Vert; | |
168 } | |
169 FWL_ERR CFWL_ScrollBarImp::GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax) { | |
170 fMin = m_fRangeMin; | |
171 fMax = m_fRangeMax; | |
172 return FWL_ERR_Succeeded; | |
173 } | |
174 FWL_ERR CFWL_ScrollBarImp::SetRange(FX_FLOAT fMin, FX_FLOAT fMax) { | |
175 m_fRangeMin = fMin; | |
176 m_fRangeMax = fMax; | |
177 return FWL_ERR_Succeeded; | |
178 } | |
179 FX_FLOAT CFWL_ScrollBarImp::GetPageSize() { | |
180 return m_fPageSize; | |
181 } | |
182 FWL_ERR CFWL_ScrollBarImp::SetPageSize(FX_FLOAT fPageSize) { | |
183 m_fPageSize = fPageSize; | |
184 return FWL_ERR_Succeeded; | |
185 } | |
186 FX_FLOAT CFWL_ScrollBarImp::GetStepSize() { | |
187 return m_fStepSize; | |
188 } | |
189 FWL_ERR CFWL_ScrollBarImp::SetStepSize(FX_FLOAT fStepSize) { | |
190 m_fStepSize = fStepSize; | |
191 return FWL_ERR_Succeeded; | |
192 } | |
193 FX_FLOAT CFWL_ScrollBarImp::GetPos() { | |
194 return m_fPos; | |
195 } | |
196 FWL_ERR CFWL_ScrollBarImp::SetPos(FX_FLOAT fPos) { | |
197 m_fPos = fPos; | |
198 return FWL_ERR_Succeeded; | |
199 } | |
200 FX_FLOAT CFWL_ScrollBarImp::GetTrackPos() { | |
201 return m_fTrackPos; | |
202 } | |
203 FWL_ERR CFWL_ScrollBarImp::SetTrackPos(FX_FLOAT fTrackPos) { | |
204 m_fTrackPos = fTrackPos; | |
205 CalcThumbButtonRect(m_rtThumb); | |
206 CalcMinTrackRect(m_rtMinTrack); | |
207 CalcMaxTrackRect(m_rtMaxTrack); | |
208 return FWL_ERR_Succeeded; | |
209 } | |
210 FX_BOOL CFWL_ScrollBarImp::DoScroll(FX_DWORD dwCode, FX_FLOAT fPos) { | |
211 switch (dwCode) { | |
212 case FWL_SCBCODE_Min: | |
213 case FWL_SCBCODE_Max: | |
214 case FWL_SCBCODE_PageBackward: | |
215 case FWL_SCBCODE_PageForward: | |
216 case FWL_SCBCODE_StepBackward: | |
217 break; | |
218 case FWL_SCBCODE_StepForward: | |
219 break; | |
220 case FWL_SCBCODE_Pos: | |
221 case FWL_SCBCODE_TrackPos: | |
222 case FWL_SCBCODE_EndScroll: | |
223 break; | |
224 default: { return FALSE; } | |
225 } | |
226 return OnScroll(dwCode, fPos); | |
227 } | |
228 int32_t CFWL_ScrollBarImp::Run(FWL_HTIMER hTimer) { | |
229 if (m_hTimer) { | |
230 FWL_StopTimer(m_hTimer); | |
231 } | |
232 if (!SendEvent()) { | |
233 m_hTimer = FWL_StartTimer(this, 0); | |
234 } | |
235 return 1; | |
236 } | |
237 FWL_ERR CFWL_ScrollBarImp::SetOuter(IFWL_Widget* pOuter) { | |
238 m_pOuter = pOuter; | |
239 return FWL_ERR_Succeeded; | |
240 } | |
241 void CFWL_ScrollBarImp::DrawTrack(CFX_Graphics* pGraphics, | |
242 IFWL_ThemeProvider* pTheme, | |
243 FX_BOOL bLower, | |
244 const CFX_Matrix* pMatrix) { | |
245 CFWL_ThemeBackground param; | |
246 param.m_pWidget = m_pInterface; | |
247 param.m_iPart = bLower ? FWL_PART_SCB_LowerTrack : FWL_PART_SCB_UpperTrack; | |
248 param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) | |
249 ? FWL_PARTSTATE_SCB_Disabled | |
250 : (bLower ? m_iMinTrackState : m_iMaxTrackState); | |
251 param.m_pGraphics = pGraphics; | |
252 param.m_matrix.Concat(*pMatrix); | |
253 param.m_rtPart = bLower ? m_rtMinTrack : m_rtMaxTrack; | |
254 pTheme->DrawBackground(¶m); | |
255 } | |
256 void CFWL_ScrollBarImp::DrawArrowBtn(CFX_Graphics* pGraphics, | |
257 IFWL_ThemeProvider* pTheme, | |
258 FX_BOOL bMinBtn, | |
259 const CFX_Matrix* pMatrix) { | |
260 CFWL_ThemeBackground param; | |
261 param.m_pWidget = m_pInterface; | |
262 param.m_iPart = bMinBtn ? FWL_PART_SCB_ForeArrow : FWL_PART_SCB_BackArrow; | |
263 param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) | |
264 ? FWL_PARTSTATE_SCB_Disabled | |
265 : (bMinBtn ? m_iMinButtonState : m_iMaxButtonState); | |
266 param.m_pGraphics = pGraphics; | |
267 param.m_matrix.Concat(*pMatrix); | |
268 param.m_rtPart = bMinBtn ? m_rtMinBtn : m_rtMaxBtn; | |
269 if (param.m_rtPart.height > 0 && param.m_rtPart.width > 0) { | |
270 pTheme->DrawBackground(¶m); | |
271 } | |
272 } | |
273 void CFWL_ScrollBarImp::DrawThumb(CFX_Graphics* pGraphics, | |
274 IFWL_ThemeProvider* pTheme, | |
275 const CFX_Matrix* pMatrix) { | |
276 if (!IsEnabled()) { | |
277 } | |
278 CFWL_ThemeBackground param; | |
279 param.m_pWidget = m_pInterface; | |
280 param.m_iPart = FWL_PART_SCB_Thumb; | |
281 param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) | |
282 ? FWL_PARTSTATE_SCB_Disabled | |
283 : m_iThumbButtonState; | |
284 param.m_pGraphics = pGraphics; | |
285 param.m_matrix.Concat(*pMatrix); | |
286 param.m_rtPart = m_rtThumb; | |
287 pTheme->DrawBackground(¶m); | |
288 } | |
289 void CFWL_ScrollBarImp::Layout() { | |
290 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; | |
291 CFWL_ThemePart part; | |
292 part.m_pWidget = m_pInterface; | |
293 m_fMinThumb = *static_cast<FX_FLOAT*>( | |
294 pTheme->GetCapacity(&part, FWL_CAPACITY_SCB_Size)); | |
295 m_bCustomLayout = pTheme->IsCustomizedLayout(m_pInterface); | |
296 GetClientRect(m_rtClient); | |
297 CalcButtonLen(); | |
298 CalcMinButtonRect(m_rtMinBtn); | |
299 CalcMaxButtonRect(m_rtMaxBtn); | |
300 CalcThumbButtonRect(m_rtThumb); | |
301 CalcMinTrackRect(m_rtMinTrack); | |
302 CalcMaxTrackRect(m_rtMaxTrack); | |
303 } | |
304 void CFWL_ScrollBarImp::CalcButtonLen() { | |
305 m_fButtonLen = IsVertical() ? m_rtClient.width : m_rtClient.height; | |
306 FX_FLOAT fLength = IsVertical() ? m_rtClient.height : m_rtClient.width; | |
307 if (fLength < m_fButtonLen * 2) { | |
308 m_fButtonLen = fLength / 2; | |
309 m_bMinSize = TRUE; | |
310 } else { | |
311 m_bMinSize = FALSE; | |
312 } | |
313 } | |
314 void CFWL_ScrollBarImp::CalcMinButtonRect(CFX_RectF& rect) { | |
315 if (m_bCustomLayout) { | |
316 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; | |
317 CFWL_ThemePart pPart; | |
318 pPart.m_rtPart = m_rtMinBtn; | |
319 pPart.m_pWidget = m_pInterface; | |
320 pPart.m_iPart = FWL_PART_SCB_ForeArrow; | |
321 pPart.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) | |
322 ? FWL_PARTSTATE_SCB_Disabled | |
323 : m_iMinButtonState; | |
324 pTheme->GetPartRect(&pPart, rect); | |
325 } else { | |
326 rect.left = m_rtClient.left; | |
327 rect.top = m_rtClient.top; | |
328 rect.width = IsVertical() ? m_rtClient.width : m_fButtonLen; | |
329 rect.height = IsVertical() ? m_fButtonLen : m_rtClient.height; | |
330 } | |
331 } | |
332 void CFWL_ScrollBarImp::CalcMaxButtonRect(CFX_RectF& rect) { | |
333 if (m_bCustomLayout) { | |
334 IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; | |
335 CFWL_ThemePart pPart; | |
336 pPart.m_rtPart = m_rtMaxBtn; | |
337 pPart.m_pWidget = m_pInterface; | |
338 pPart.m_iPart = FWL_PART_SCB_BackArrow; | |
339 pPart.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) | |
340 ? FWL_PARTSTATE_SCB_Disabled | |
341 : m_iMaxButtonState; | |
342 pTheme->GetPartRect(&pPart, rect); | |
343 } else { | |
344 rect.left = | |
345 IsVertical() ? m_rtClient.left : m_rtClient.right() - m_fButtonLen; | |
346 rect.top = | |
347 IsVertical() ? m_rtClient.bottom() - m_fButtonLen : m_rtClient.top; | |
348 rect.width = IsVertical() ? m_rtClient.width : m_fButtonLen; | |
349 rect.height = IsVertical() ? m_fButtonLen : m_rtClient.height; | |
350 } | |
351 } | |
352 void CFWL_ScrollBarImp::CalcThumbButtonRect(CFX_RectF& rect) { | |
353 if (!IsEnabled()) { | |
354 m_rtThumb.Reset(); | |
355 return; | |
356 } | |
357 if (m_bMinSize) { | |
358 m_rtThumb.Empty(); | |
359 return; | |
360 } | |
361 FX_FLOAT fRange = m_fRangeMax - m_fRangeMin; | |
362 memset(&rect, 0, sizeof(CFX_Rect)); | |
363 if (fRange < 0) { | |
364 if (IsVertical()) { | |
365 rect.Set(m_rtClient.left, m_rtMaxBtn.bottom(), m_rtClient.width, 0); | |
366 } else { | |
367 rect.Set(m_rtMaxBtn.right(), m_rtClient.top, 0, m_rtClient.height); | |
368 } | |
369 return; | |
370 } | |
371 CFX_RectF rtClient = m_rtClient; | |
372 FX_FLOAT fLength = IsVertical() ? rtClient.height : rtClient.width; | |
373 FX_FLOAT fSize = m_fButtonLen; | |
374 if (m_bCustomLayout) { | |
375 if (IsVertical()) { | |
376 fLength = fLength - m_rtMinBtn.height - m_rtMaxBtn.height; | |
377 if (fLength < m_rtMinBtn.height || fLength < m_rtMaxBtn.height) { | |
378 fLength = 0.0f; | |
379 } | |
380 } else { | |
381 fLength = fLength - m_rtMinBtn.width - m_rtMaxBtn.width; | |
382 if (fLength < m_rtMinBtn.width || fLength < m_rtMaxBtn.width) { | |
383 fLength = 0.0f; | |
384 } | |
385 } | |
386 } else { | |
387 fLength -= fSize * 2.0f; | |
388 if (fLength < fSize) { | |
389 fLength = 0.0f; | |
390 } | |
391 } | |
392 FX_FLOAT fThumbSize = fLength * fLength / (fRange + fLength); | |
393 if (fThumbSize < m_fMinThumb) { | |
394 fThumbSize = m_fMinThumb; | |
395 } | |
396 FX_FLOAT fDiff = fLength - fThumbSize; | |
397 if (fDiff < 0.0f) { | |
398 fDiff = 0.0f; | |
399 } | |
400 FX_FLOAT fTrackPos = m_fTrackPos; | |
401 if (fTrackPos > m_fRangeMax) { | |
402 fTrackPos = m_fRangeMax; | |
403 } | |
404 if (fTrackPos < m_fRangeMin) { | |
405 fTrackPos = m_fRangeMin; | |
406 } | |
407 if (!fRange) | |
408 return; | |
409 if (m_bCustomLayout) { | |
410 FX_FLOAT iPos = fDiff * (fTrackPos - m_fRangeMin) / fRange; | |
411 rect.left = rtClient.left; | |
412 if (!IsVertical()) { | |
413 if ((m_rtMinBtn.right() == m_rtMaxBtn.left && m_rtMinBtn.width > 0 && | |
414 m_rtMaxBtn.width > 0) || | |
415 (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width)) { | |
416 rect.left += iPos; | |
417 } else { | |
418 rect.left += m_rtMinBtn.right() + iPos; | |
419 } | |
420 } | |
421 rect.top = rtClient.top; | |
422 if (IsVertical()) { | |
423 if ((m_rtMinBtn.bottom() == m_rtMaxBtn.top && m_rtMinBtn.height > 0 && | |
424 m_rtMaxBtn.height > 0) || | |
425 (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height)) { | |
426 rect.top += iPos; | |
427 } else { | |
428 rect.top += m_rtMinBtn.bottom() + iPos; | |
429 } | |
430 } | |
431 rect.width = IsVertical() ? rtClient.width : fThumbSize; | |
432 rect.height = IsVertical() ? fThumbSize : rtClient.height; | |
433 } else { | |
434 FX_FLOAT iPos = fSize + fDiff * (fTrackPos - m_fRangeMin) / fRange; | |
435 rect.left = rtClient.left; | |
436 if (!IsVertical()) { | |
437 rect.left += iPos; | |
438 } | |
439 rect.top = rtClient.top; | |
440 if (IsVertical()) { | |
441 rect.top += iPos; | |
442 } | |
443 rect.width = IsVertical() ? rtClient.width : fThumbSize; | |
444 rect.height = IsVertical() ? fThumbSize : rtClient.height; | |
445 } | |
446 } | |
447 void CFWL_ScrollBarImp::CalcMinTrackRect(CFX_RectF& rect) { | |
448 if (m_bMinSize) { | |
449 rect.Empty(); | |
450 return; | |
451 } | |
452 FX_FLOAT fBottom = m_rtThumb.bottom(); | |
453 FX_FLOAT fRight = m_rtThumb.right(); | |
454 FX_FLOAT ix = (m_rtThumb.left + fRight) / 2; | |
455 FX_FLOAT iy = (m_rtThumb.top + fBottom) / 2; | |
456 rect.left = m_rtClient.left; | |
457 rect.top = m_rtClient.top; | |
458 FX_BOOL bVertical = IsVertical(); | |
459 rect.width = bVertical ? m_rtClient.width : ix; | |
460 rect.height = bVertical ? iy : m_rtClient.height; | |
461 if (m_bCustomLayout) { | |
462 if (bVertical) { | |
463 if (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height) { | |
464 rect.top = m_rtClient.top; | |
465 } else if (m_rtMinBtn.top < m_rtThumb.top) { | |
466 rect.top = m_rtMinBtn.bottom(); | |
467 rect.height -= (m_rtMinBtn.bottom() - m_rtClient.top); | |
468 } | |
469 } else { | |
470 if (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width) { | |
471 rect.left = m_rtClient.left; | |
472 } else if (m_rtMinBtn.left < m_rtThumb.left) { | |
473 rect.left = m_rtMinBtn.right(); | |
474 rect.width -= (m_rtMinBtn.right() - m_rtClient.left); | |
475 } | |
476 } | |
477 } | |
478 } | |
479 void CFWL_ScrollBarImp::CalcMaxTrackRect(CFX_RectF& rect) { | |
480 if (m_bMinSize) { | |
481 rect.Empty(); | |
482 return; | |
483 } | |
484 FX_FLOAT ix = (m_rtThumb.left + m_rtThumb.right()) / 2; | |
485 FX_FLOAT iy = (m_rtThumb.top + m_rtThumb.bottom()) / 2; | |
486 FX_BOOL bVertical = IsVertical(); | |
487 rect.left = bVertical ? m_rtClient.left : ix; | |
488 rect.top = bVertical ? iy : m_rtClient.top; | |
489 rect.width = bVertical ? m_rtClient.width : m_rtClient.right() - ix; | |
490 rect.height = bVertical ? m_rtClient.bottom() - iy : m_rtClient.height; | |
491 if (m_bCustomLayout) { | |
492 if (bVertical) { | |
493 if (m_rtMinBtn.top > m_rtThumb.top && m_rtMinBtn.height > 0 && | |
494 m_rtMaxBtn.height > 0) { | |
495 rect.height -= (m_rtClient.bottom() - m_rtMinBtn.top); | |
496 } else if (m_rtMinBtn.height > 0 && m_rtMaxBtn.height > 0) { | |
497 rect.height -= (m_rtClient.bottom() - m_rtMaxBtn.top); | |
498 } | |
499 } else { | |
500 if (m_rtMinBtn.left > m_rtThumb.left && m_rtMinBtn.width > 0 && | |
501 m_rtMaxBtn.width > 0) { | |
502 rect.width -= (m_rtClient.right() - m_rtMinBtn.left); | |
503 } else if (m_rtMinBtn.width > 0 && m_rtMaxBtn.width > 0) { | |
504 rect.width -= (m_rtClient.right() - m_rtMaxBtn.left); | |
505 } | |
506 } | |
507 } | |
508 } | |
509 FX_FLOAT CFWL_ScrollBarImp::GetTrackPointPos(FX_FLOAT fx, FX_FLOAT fy) { | |
510 FX_FLOAT fDiffX = fx - m_cpTrackPointX; | |
511 FX_FLOAT fDiffY = fy - m_cpTrackPointY; | |
512 FX_FLOAT fRange = m_fRangeMax - m_fRangeMin; | |
513 FX_FLOAT fPos; | |
514 if (m_bCustomLayout) { | |
515 if (IsVertical()) { | |
516 if (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height) { | |
517 fPos = fRange * fDiffY / (m_rtClient.height - m_rtThumb.height); | |
518 } else if (m_rtMinBtn.bottom() == m_rtMaxBtn.top) { | |
519 fPos = fRange * fDiffY / | |
520 (m_rtMinBtn.top - m_rtClient.top - m_rtThumb.height); | |
521 } else { | |
522 fPos = fRange * fDiffY / | |
523 (m_rtMaxBtn.top - m_rtMinBtn.bottom() - m_rtThumb.height); | |
524 } | |
525 } else { | |
526 if (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width) { | |
527 fPos = fRange * fDiffX / (m_rtClient.width - m_rtThumb.width); | |
528 } else if (m_rtMinBtn.right() == m_rtMaxBtn.left) { | |
529 fPos = fRange * fDiffX / | |
530 (m_rtMinBtn.left - m_rtClient.left - m_rtThumb.width); | |
531 } else { | |
532 fPos = fRange * fDiffX / | |
533 (m_rtMaxBtn.left - m_rtMinBtn.right() - m_rtThumb.width); | |
534 } | |
535 } | |
536 } else { | |
537 if (IsVertical()) { | |
538 fPos = fRange * fDiffY / | |
539 (m_rtMaxBtn.top - m_rtMinBtn.bottom() - m_rtThumb.height); | |
540 } else { | |
541 fPos = fRange * fDiffX / | |
542 (m_rtMaxBtn.left - m_rtMinBtn.right() - m_rtThumb.width); | |
543 } | |
544 } | |
545 fPos += m_fLastTrackPos; | |
546 if (fPos < m_fRangeMin) { | |
547 fPos = m_fRangeMin; | |
548 } | |
549 if (fPos > m_fRangeMax) { | |
550 fPos = m_fRangeMax; | |
551 } | |
552 return fPos; | |
553 } | |
554 void CFWL_ScrollBarImp::GetTrackRect(CFX_RectF& rect, FX_BOOL bLower) { | |
555 FX_BOOL bDisabled = m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled; | |
556 if (bDisabled || m_bCustomLayout) { | |
557 rect = bLower ? m_rtMinTrack : m_rtMaxTrack; | |
558 } else { | |
559 FX_FLOAT fW = m_rtThumb.width / 2; | |
560 FX_FLOAT fH = m_rtThumb.height / 2; | |
561 FX_BOOL bVert = IsVertical(); | |
562 if (bLower) { | |
563 if (bVert) { | |
564 FX_FLOAT fMinTrackHeight = m_rtMinTrack.height - fH - m_rtMinBtn.height; | |
565 fMinTrackHeight = (fMinTrackHeight >= 0.0f) ? fMinTrackHeight : 0.0f; | |
566 rect.Set(m_rtMinTrack.left, m_rtMinTrack.top + m_rtMinBtn.height, | |
567 m_rtMinTrack.width, fMinTrackHeight); | |
568 } else { | |
569 FX_FLOAT fMinTrackWidth = | |
570 m_rtMinTrack.width - fW - m_rtMinBtn.width + 2; | |
571 fMinTrackWidth = (fMinTrackWidth >= 0.0f) ? fMinTrackWidth : 0.0f; | |
572 rect.Set(m_rtMinTrack.left + m_rtMinBtn.width - 1, m_rtMinTrack.top, | |
573 fMinTrackWidth, m_rtMinTrack.height); | |
574 } | |
575 } else { | |
576 if (bVert) { | |
577 FX_FLOAT fMaxTrackHeight = m_rtMaxTrack.height - fH - m_rtMaxBtn.height; | |
578 fMaxTrackHeight = (fMaxTrackHeight >= 0.0f) ? fMaxTrackHeight : 0.0f; | |
579 rect.Set(m_rtMaxTrack.left, m_rtMaxTrack.top + fH, m_rtMaxTrack.width, | |
580 fMaxTrackHeight); | |
581 } else { | |
582 FX_FLOAT fMaxTrackWidth = | |
583 m_rtMaxTrack.width - fW - m_rtMaxBtn.width + 2; | |
584 fMaxTrackWidth = (fMaxTrackWidth >= 0.0f) ? fMaxTrackWidth : 0.0f; | |
585 rect.Set(m_rtMaxTrack.left + fW, m_rtMaxTrack.top, fMaxTrackWidth, | |
586 m_rtMaxTrack.height); | |
587 } | |
588 } | |
589 } | |
590 } | |
591 FX_BOOL CFWL_ScrollBarImp::SendEvent() { | |
592 if (m_iMinButtonState == FWL_PARTSTATE_SCB_Pressed) { | |
593 DoScroll(FWL_SCBCODE_StepBackward, m_fTrackPos); | |
594 return FALSE; | |
595 } | |
596 if (m_iMaxButtonState == FWL_PARTSTATE_SCB_Pressed) { | |
597 DoScroll(FWL_SCBCODE_StepForward, m_fTrackPos); | |
598 return FALSE; | |
599 } | |
600 if (m_iMinTrackState == FWL_PARTSTATE_SCB_Pressed) { | |
601 DoScroll(FWL_SCBCODE_PageBackward, m_fTrackPos); | |
602 return m_rtThumb.Contains(m_cpTrackPointX, m_cpTrackPointY); | |
603 } | |
604 if (m_iMaxTrackState == FWL_PARTSTATE_SCB_Pressed) { | |
605 DoScroll(FWL_SCBCODE_PageForward, m_fTrackPos); | |
606 return m_rtThumb.Contains(m_cpTrackPointX, m_cpTrackPointY); | |
607 } | |
608 if (m_iMouseWheel) { | |
609 FX_WORD dwCode = | |
610 m_iMouseWheel < 0 ? FWL_SCBCODE_StepForward : FWL_SCBCODE_StepBackward; | |
611 DoScroll(dwCode, m_fTrackPos); | |
612 } | |
613 return TRUE; | |
614 } | |
615 FX_BOOL CFWL_ScrollBarImp::OnScroll(FX_DWORD dwCode, FX_FLOAT fPos) { | |
616 FX_BOOL bRet = TRUE; | |
617 CFWL_EvtScroll ev; | |
618 ev.m_iScrollCode = dwCode; | |
619 ev.m_pSrcTarget = m_pInterface; | |
620 ev.m_fPos = fPos; | |
621 ev.m_pRet = &bRet; | |
622 DispatchEvent(&ev); | |
623 return bRet; | |
624 } | |
625 CFWL_ScrollBarImpDelegate::CFWL_ScrollBarImpDelegate(CFWL_ScrollBarImp* pOwner) | |
626 : m_pOwner(pOwner) {} | |
627 int32_t CFWL_ScrollBarImpDelegate::OnProcessMessage(CFWL_Message* pMessage) { | |
628 if (!pMessage) | |
629 return 0; | |
630 int32_t iRet = 1; | |
631 FX_DWORD dwMsgCode = pMessage->GetClassID(); | |
632 if (dwMsgCode == FWL_MSGHASH_Mouse) { | |
633 CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage); | |
634 FX_DWORD dwCmd = pMsg->m_dwCmd; | |
635 switch (dwCmd) { | |
636 case FWL_MSGMOUSECMD_LButtonDown: { | |
637 OnLButtonDown(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); | |
638 break; | |
639 } | |
640 case FWL_MSGMOUSECMD_LButtonUp: { | |
641 OnLButtonUp(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); | |
642 break; | |
643 } | |
644 case FWL_MSGMOUSECMD_MouseMove: { | |
645 OnMouseMove(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); | |
646 break; | |
647 } | |
648 case FWL_MSGMOUSECMD_MouseLeave: { | |
649 OnMouseLeave(); | |
650 break; | |
651 } | |
652 default: { iRet = 0; } | |
653 } | |
654 } else if (dwMsgCode == FWL_MSGHASH_MouseWheel) { | |
655 CFWL_MsgMouseWheel* pMsg = static_cast<CFWL_MsgMouseWheel*>(pMessage); | |
656 OnMouseWheel(pMsg->m_fx, pMsg->m_fy, pMsg->m_dwFlags, pMsg->m_fDeltaX, | |
657 pMsg->m_fDeltaY); | |
658 } else { | |
659 iRet = 0; | |
660 } | |
661 return iRet; | |
662 } | |
663 FWL_ERR CFWL_ScrollBarImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics, | |
664 const CFX_Matrix* pMatrix) { | |
665 return m_pOwner->DrawWidget(pGraphics, pMatrix); | |
666 } | |
667 void CFWL_ScrollBarImpDelegate::OnLButtonDown(FX_DWORD dwFlags, | |
668 FX_FLOAT fx, | |
669 FX_FLOAT fy) { | |
670 if (!m_pOwner->IsEnabled()) { | |
671 return; | |
672 } | |
673 m_pOwner->m_bMouseDown = TRUE; | |
674 m_pOwner->SetGrab(TRUE); | |
675 m_pOwner->m_cpTrackPointX = fx; | |
676 m_pOwner->m_cpTrackPointY = fy; | |
677 m_pOwner->m_fLastTrackPos = m_pOwner->m_fTrackPos; | |
678 if (m_pOwner->m_rtMinBtn.Contains(fx, fy)) { | |
679 DoMouseDown(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); | |
680 } else { | |
681 if (m_pOwner->m_rtThumb.Contains(fx, fy)) { | |
682 DoMouseDown(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, | |
683 fy); | |
684 } else { | |
685 if (m_pOwner->m_rtMaxBtn.Contains(fx, fy)) { | |
686 DoMouseDown(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, | |
687 fy); | |
688 } else { | |
689 if (m_pOwner->m_rtMinTrack.Contains(fx, fy)) { | |
690 DoMouseDown(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, | |
691 fy); | |
692 } else { | |
693 DoMouseDown(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, | |
694 fy); | |
695 } | |
696 } | |
697 } | |
698 } | |
699 if (!m_pOwner->SendEvent()) { | |
700 m_pOwner->m_hTimer = FWL_StartTimer(m_pOwner, FWL_SCROLLBAR_Elapse); | |
701 } | |
702 } | |
703 void CFWL_ScrollBarImpDelegate::OnLButtonUp(FX_DWORD dwFlags, | |
704 FX_FLOAT fx, | |
705 FX_FLOAT fy) { | |
706 FWL_StopTimer(m_pOwner->m_hTimer); | |
707 m_pOwner->m_bMouseDown = FALSE; | |
708 DoMouseUp(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); | |
709 DoMouseUp(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, fy); | |
710 DoMouseUp(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, fy); | |
711 DoMouseUp(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, fy); | |
712 DoMouseUp(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, fy); | |
713 m_pOwner->SetGrab(FALSE); | |
714 } | |
715 void CFWL_ScrollBarImpDelegate::OnMouseMove(FX_DWORD dwFlags, | |
716 FX_FLOAT fx, | |
717 FX_FLOAT fy) { | |
718 DoMouseMove(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); | |
719 DoMouseMove(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, fy); | |
720 DoMouseMove(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, fy); | |
721 DoMouseMove(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, fy); | |
722 DoMouseMove(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, fy); | |
723 } | |
724 void CFWL_ScrollBarImpDelegate::OnMouseLeave() { | |
725 DoMouseLeave(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState); | |
726 DoMouseLeave(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState); | |
727 DoMouseLeave(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState); | |
728 DoMouseLeave(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState); | |
729 DoMouseLeave(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState); | |
730 } | |
731 void CFWL_ScrollBarImpDelegate::OnMouseWheel(FX_FLOAT fx, | |
732 FX_FLOAT fy, | |
733 FX_DWORD dwFlags, | |
734 FX_FLOAT fDeltaX, | |
735 FX_FLOAT fDeltaY) { | |
736 m_pOwner->m_iMouseWheel = (int32_t)fDeltaX; | |
737 m_pOwner->SendEvent(); | |
738 m_pOwner->m_iMouseWheel = 0; | |
739 } | |
740 void CFWL_ScrollBarImpDelegate::DoMouseDown(int32_t iItem, | |
741 const CFX_RectF& rtItem, | |
742 int32_t& iState, | |
743 FX_FLOAT fx, | |
744 FX_FLOAT fy) { | |
745 if (!rtItem.Contains(fx, fy)) { | |
746 return; | |
747 } | |
748 if (iState == FWL_PARTSTATE_SCB_Pressed) { | |
749 return; | |
750 } | |
751 iState = FWL_PARTSTATE_SCB_Pressed; | |
752 m_pOwner->Repaint(&rtItem); | |
753 } | |
754 void CFWL_ScrollBarImpDelegate::DoMouseUp(int32_t iItem, | |
755 const CFX_RectF& rtItem, | |
756 int32_t& iState, | |
757 FX_FLOAT fx, | |
758 FX_FLOAT fy) { | |
759 int32_t iNewState = rtItem.Contains(fx, fy) ? FWL_PARTSTATE_SCB_Hovered | |
760 : FWL_PARTSTATE_SCB_Normal; | |
761 if (iState == iNewState) { | |
762 return; | |
763 } | |
764 iState = iNewState; | |
765 m_pOwner->Repaint(&rtItem); | |
766 m_pOwner->OnScroll(FWL_SCBCODE_EndScroll, m_pOwner->m_fTrackPos); | |
767 } | |
768 void CFWL_ScrollBarImpDelegate::DoMouseMove(int32_t iItem, | |
769 const CFX_RectF& rtItem, | |
770 int32_t& iState, | |
771 FX_FLOAT fx, | |
772 FX_FLOAT fy) { | |
773 if (!m_pOwner->m_bMouseDown) { | |
774 int32_t iNewState = rtItem.Contains(fx, fy) ? FWL_PARTSTATE_SCB_Hovered | |
775 : FWL_PARTSTATE_SCB_Normal; | |
776 if (iState == iNewState) { | |
777 return; | |
778 } | |
779 iState = iNewState; | |
780 m_pOwner->Repaint(&rtItem); | |
781 } else if ((2 == iItem) && | |
782 (m_pOwner->m_iThumbButtonState == FWL_PARTSTATE_SCB_Pressed)) { | |
783 FX_FLOAT fPos = m_pOwner->GetTrackPointPos(fx, fy); | |
784 m_pOwner->m_fTrackPos = fPos; | |
785 m_pOwner->OnScroll(FWL_SCBCODE_TrackPos, fPos); | |
786 } | |
787 } | |
788 void CFWL_ScrollBarImpDelegate::DoMouseLeave(int32_t iItem, | |
789 const CFX_RectF& rtItem, | |
790 int32_t& iState) { | |
791 if (iState == FWL_PARTSTATE_SCB_Normal) { | |
792 return; | |
793 } | |
794 iState = FWL_PARTSTATE_SCB_Normal; | |
795 m_pOwner->Repaint(&rtItem); | |
796 } | |
797 void CFWL_ScrollBarImpDelegate::DoMouseHover(int32_t iItem, | |
798 const CFX_RectF& rtItem, | |
799 int32_t& iState) { | |
800 if (iState == FWL_PARTSTATE_SCB_Hovered) { | |
801 return; | |
802 } | |
803 iState = FWL_PARTSTATE_SCB_Hovered; | |
804 m_pOwner->Repaint(&rtItem); | |
805 } | |
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