1 /*
2 * Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifndef AWT_COMPONENT_H
27 #define AWT_COMPONENT_H
28
29 #include "awtmsg.h"
30 #include "awt_Object.h"
31 #include "awt_Font.h"
32 #include "awt_Brush.h"
33 #include "awt_Pen.h"
34 #include "awt_Win32GraphicsDevice.h"
35 #include "GDIWindowSurfaceData.h"
36
37 #include "java_awt_Component.h"
38 #include "sun_awt_windows_WComponentPeer.h"
39 #include "java_awt_event_KeyEvent.h"
40 #include "java_awt_event_MouseEvent.h"
41 #include "java_awt_event_WindowEvent.h"
42 #include "java_awt_Dimension.h"
43
44 extern LPCTSTR szAwtComponentClassName;
45
46 static LPCTSTR DrawingStateProp = TEXT("SunAwtDrawingStateProp");
47
48 const UINT IGNORE_KEY = (UINT)-1;
49 const UINT MAX_ACP_STR_LEN = 7; // ANSI CP identifiers are no longer than this
50
51 #define LEFT_BUTTON 1
52 #define MIDDLE_BUTTON 2
53 #define RIGHT_BUTTON 4
54 #define DBL_CLICK 8
55 #define X1_BUTTON 16
56 #define X2_BUTTON 32
57
58 #ifndef MK_XBUTTON1
59 #define MK_XBUTTON1 0x0020
60 #endif
61
62 #ifndef MK_XBUTTON2
63 #define MK_XBUTTON2 0x0040
64 #endif
65
66 // combination of standard mouse button flags
67 const int ALL_MK_BUTTONS = MK_LBUTTON|MK_MBUTTON|MK_RBUTTON;
68 const int X_BUTTONS = MK_XBUTTON1|MK_XBUTTON2;
69
70 // The allowable difference between coordinates of the WM_TOUCH event and the
71 // corresponding WM_LBUTTONDOWN/WM_LBUTTONUP event letting to associate these
72 // events, when their coordinates are slightly different.
73 const int TOUCH_MOUSE_COORDS_DELTA = 10;
74
75 // Whether to check for embedded frame and adjust location
76 #define CHECK_EMBEDDED 0
77 #define DONT_CHECK_EMBEDDED 1
78
79 class AwtPopupMenu;
80
81 class AwtDropTarget;
82
83 /*
84 * Message routing codes
85 */
86 enum MsgRouting {
87 mrPassAlong, /* pass along to next in chain */
88 mrDoDefault, /* skip right to underlying default behavior */
89 mrConsume, /* consume msg & terminate routing immediatly,
90 * don't pass anywhere
91 */
92 };
93
94 /************************************************************************
95 * AwtComponent class
96 */
97
98 class AwtComponent : public AwtObject {
99 public:
100 /* java.awt.Component fields and method IDs */
101 static jfieldID peerID;
102 static jfieldID xID;
103 static jfieldID yID;
104 static jfieldID widthID;
105 static jfieldID heightID;
106 static jfieldID visibleID;
107 static jfieldID backgroundID;
108 static jfieldID foregroundID;
109 static jfieldID enabledID;
110 static jfieldID parentID;
111 static jfieldID cursorID;
112 static jfieldID graphicsConfigID;
113 static jfieldID peerGCID;
114 static jfieldID focusableID;
115 static jfieldID appContextID;
116 static jfieldID hwndID;
117
118 static jmethodID getFontMID;
119 static jmethodID getToolkitMID;
120 static jmethodID isEnabledMID;
121 static jmethodID getLocationOnScreenMID;
122 static jmethodID replaceSurfaceDataMID;
123 static jmethodID replaceSurfaceDataLaterMID;
124 static jmethodID disposeLaterMID;
125
126 static const UINT WmAwtIsComponent;
127 static jint * masks; //InputEvent mask array
128 AwtComponent();
129 virtual ~AwtComponent();
130
131 /*
132 * Dynamic class registration & creation
133 */
134 virtual LPCTSTR GetClassName() = 0;
135 /*
136 * Fix for 4964237: Win XP: Changing theme changes java dialogs title icon
137 * WNDCLASS structure has been superseded by the WNDCLASSEX in Win32
138 */
139 virtual void FillClassInfo(WNDCLASSEX *lpwc);
140 virtual void RegisterClass();
141 virtual void UnregisterClass();
142
143 virtual void CreateHWnd(JNIEnv *env, LPCWSTR title,
144 DWORD windowStyle, DWORD windowExStyle,
145 int x, int y, int w, int h,
146 HWND hWndParent, HMENU hMenu,
147 COLORREF colorForeground, COLORREF colorBackground,
148 jobject peer);
149 virtual void DestroyHWnd();
150 void InitPeerGraphicsConfig(JNIEnv *env, jobject peer);
151
152 virtual void Dispose();
153
154 void UpdateBackground(JNIEnv *env, jobject target);
155
156 virtual void SubclassHWND();
157 virtual void UnsubclassHWND();
158
159 static LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
160 WPARAM wParam, LPARAM lParam);
161
162 /*
163 * Access to the various objects of this aggregate component
164 */
165 INLINE HWND GetHWnd() { return m_hwnd; }
166 INLINE void SetHWnd(HWND hwnd) { m_hwnd = hwnd; }
167
168 static AwtComponent* GetComponent(HWND hWnd);
169
170 /*
171 * Access to the properties of the component
172 */
173 INLINE COLORREF GetColor() { return m_colorForeground; }
174 virtual void SetColor(COLORREF c);
175 HPEN GetForegroundPen();
176
177 COLORREF GetBackgroundColor();
178 virtual void SetBackgroundColor(COLORREF c);
179 HBRUSH GetBackgroundBrush();
180 INLINE BOOL IsBackgroundColorSet() { return m_backgroundColorSet; }
181
182 virtual void SetFont(AwtFont *pFont);
183
184 INLINE void SetText(LPCTSTR text) { ::SetWindowText(GetHWnd(), text); }
185 INLINE int GetText(LPTSTR buffer, int size) {
186 return ::GetWindowText(GetHWnd(), buffer, size);
187 }
188 INLINE int GetTextLength() { return ::GetWindowTextLength(GetHWnd()); }
189
190 virtual void GetInsets(RECT* rect) {
191 VERIFY(::SetRectEmpty(rect));
192 }
193
194 BOOL IsVisible() { return m_visible;};
195
196 HDC GetDCFromComponent();
197
198 /*
199 * Enable/disable component
200 */
201 virtual void Enable(BOOL bEnable);
202
203 /*
204 * Validate and call handleExpose on rects of UpdateRgn
205 */
206 void PaintUpdateRgn(const RECT *insets);
207
208 static HWND GetTopLevelParentForWindow(HWND hwndDescendant);
209
210 static jobject FindHeavyweightUnderCursor(BOOL useCache);
211
212 /*
213 * Returns the parent component. If no parent window, or the
214 * parent window isn't an AwtComponent, returns NULL.
215 */
216 AwtComponent* GetParent();
217
218 /* Get the component's immediate container. Note: may return NULL while
219 the component is being reparented in full-screen mode by Direct3D */
220 class AwtWindow* GetContainer();
221
222 /* Is a component a container? Used by above method */
223 virtual BOOL IsContainer() { return FALSE;} // Plain components can't
224
225 /**
226 * Returns TRUE if this message will trigger native focus change, FALSE otherwise.
227 */
228 virtual BOOL IsFocusingKeyMessage(MSG *pMsg);
229 virtual BOOL IsFocusingMouseMessage(MSG *pMsg);
230
231 BOOL IsFocusable();
232
233 /*
234 * Returns an increasing unsigned value used for child control IDs.
235 * There is no attempt to reclaim command ID's.
236 */
237 INLINE UINT CreateControlID() { return m_nextControlID++; }
238
239 // returns the current keyboard layout
240 INLINE static HKL GetKeyboardLayout() {
241 return m_hkl;
242 }
243
244 // returns the current code page that should be used in
245 // all MultiByteToWideChar and WideCharToMultiByte calls.
246 // This code page should also be use in IsDBCSLeadByteEx.
247 INLINE static UINT GetCodePage()
248 {
249 return m_CodePage;
250 }
251
252 // Added by waleed for BIDI Support
253 // returns the right to left status
254 INLINE static BOOL GetRTLReadingOrder() {
255 return sm_rtlReadingOrder;
256 }
257 // returns the right to left status
258 INLINE static BOOL GetRTL() {
259 return sm_rtl;
260 }
261 // returns the current sub language
262 INLINE static LANGID GetSubLanguage() {
263 return SUBLANGID(m_idLang);
264 }
265 // end waleed
266
267 // returns the current input language
268 INLINE static LANGID GetInputLanguage()
269 {
270 return m_idLang;
271 }
272 // Convert Language ID to CodePage
273 static UINT LangToCodePage(LANGID idLang);
274
275 /*
276 * methods on this component
277 */
278 virtual void Show();
279 virtual void Hide();
280 virtual void Reshape(int x, int y, int w, int h);
281
282 /*
283 * Fix for 4046446.
284 * Component size/position helper, for the values above the short int limit.
285 */
286 static BOOL SetWindowPos(HWND wnd, HWND after,
287 int x, int y, int w, int h, UINT flags);
288
289 /*
290 * Sets the scrollbar values. 'bar' can be either SB_VERT or
291 * SB_HORZ. 'min', 'value', and 'max' can have the value INT_MAX
292 * which means that the value should not be changed.
293 */
294 void SetScrollValues(UINT bar, int min, int value, int max);
295
296 INLINE LRESULT SendMessage(UINT msg, WPARAM wParam=0, LPARAM lParam=0) {
297 DASSERT(GetHWnd());
298 return ::SendMessage(GetHWnd(), msg, wParam, lParam);
299 }
300
301 void PostUngrabEvent();
302
303 INLINE virtual LONG GetStyle() {
304 DASSERT(GetHWnd());
305 return ::GetWindowLong(GetHWnd(), GWL_STYLE);
306 }
307 INLINE virtual void SetStyle(LONG style) {
308 DASSERT(GetHWnd());
309 // SetWindowLong() error handling as recommended by Win32 API doc.
310 ::SetLastError(0);
311 DWORD ret = ::SetWindowLong(GetHWnd(), GWL_STYLE, style);
312 DASSERT(ret != 0 || ::GetLastError() == 0);
313 }
314 INLINE virtual LONG GetStyleEx() {
315 DASSERT(GetHWnd());
316 return ::GetWindowLong(GetHWnd(), GWL_EXSTYLE);
317 }
318 INLINE virtual void SetStyleEx(LONG style) {
319 DASSERT(GetHWnd());
320 // SetWindowLong() error handling as recommended by Win32 API doc.
321 ::SetLastError(0);
322 DWORD ret = ::SetWindowLong(GetHWnd(), GWL_EXSTYLE, style);
323 DASSERT(ret != 0 || ::GetLastError() == 0);
324 }
325
326 virtual BOOL NeedDblClick() { return FALSE; }
327
328 /* for multifont component */
329 static void DrawWindowText(HDC hDC, jobject font, jstring text,
330 int x, int y);
331 static void DrawGrayText(HDC hDC, jobject font, jstring text,
332 int x, int y);
333
334 void DrawListItem(JNIEnv *env, DRAWITEMSTRUCT &drawInfo);
335
336 void MeasureListItem(JNIEnv *env, MEASUREITEMSTRUCT &measureInfo);
337
338 jstring GetItemString(JNIEnv *env, jobject target, jint index);
339
340 jint GetFontHeight(JNIEnv *env);
341
342 virtual jobject PreferredItemSize(JNIEnv *env) {DASSERT(FALSE); return NULL; }
343
344 INLINE BOOL isEnabled() {
345 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
346 if (env->EnsureLocalCapacity(2) < 0) {
347 return NULL;
348 }
349 jobject self = GetPeer(env);
350 jobject target = env->GetObjectField(self, AwtObject::targetID);
351 BOOL e = env->CallBooleanMethod(target, AwtComponent::isEnabledMID);
352 DASSERT(!safe_ExceptionOccurred(env));
353
354 env->DeleteLocalRef(target);
355
356 return e;
357 }
358
359 INLINE BOOL isRecursivelyEnabled() {
360 AwtComponent* p = this;
361 do {
362 if (!p->isEnabled()) {
363 return FALSE;
364 }
365 } while (!p->IsTopLevel() &&
366 (p = p->GetParent()) != NULL);
367 return TRUE;
368 }
369
370 void SendKeyEventToFocusOwner(jint id, jlong when, jint raw, jint cooked,
371 jint modifiers, jint keyLocation, jlong nativeCode,
372 MSG *msg = NULL);
373 /*
374 * Allocate and initialize a new java.awt.event.KeyEvent, and
375 * post it to the peer's target object. No response is expected
376 * from the target.
377 */
378 void SendKeyEvent(jint id, jlong when, jint raw, jint cooked,
379 jint modifiers, jint keyLocation, jlong nativeCode,
380 MSG *msg = NULL);
381
382 /*
383 * Allocate and initialize a new java.awt.event.MouseEvent, and
384 * post it to the peer's target object. No response is expected
385 * from the target.
386 */
387 void SendMouseEvent(jint id, jlong when, jint x, jint y,
388 jint modifiers, jint clickCount,
389 jboolean popupTrigger, jint button = 0,
390 MSG *msg = NULL, BOOL causedByTouchEvent = FALSE);
391
392 /*
393 * Allocate and initialize a new java.awt.event.MouseWheelEvent, and
394 * post it to the peer's target object. No response is expected
395 * from the target.
396 */
397 void SendMouseWheelEvent(jint id, jlong when, jint x, jint y,
398 jint modifiers, jint clickCount,
399 jboolean popupTrigger, jint scrollType,
400 jint scrollAmount, jint wheelRotation,
401 jdouble preciseWheelRotation, MSG *msg = NULL);
402
403 /*
404 * Allocate and initialize a new java.awt.event.FocusEvent, and
405 * post it to the peer's target object. No response is expected
406 * from the target.
407 */
408 void SendFocusEvent(jint id, HWND opposite);
409
410 /* Forward a filtered event directly to the subclassed window.
411 synthetic should be TRUE iff the message was generated because
412 of a synthetic Java event, rather than a native event. */
413 virtual MsgRouting HandleEvent(MSG *msg, BOOL synthetic);
414
415 /* Post a WM_AWT_HANDLE_EVENT message which invokes HandleEvent
416 on the toolkit thread. This method may pre-filter the messages. */
417 virtual BOOL PostHandleEventMessage(MSG *msg, BOOL synthetic);
418
419 /* Event->message synthesizer methods. */
420 void SynthesizeKeyMessage(JNIEnv *env, jobject keyEvent);
421 void SynthesizeMouseMessage(JNIEnv *env, jobject mouseEvent);
422
423 /* Components which inherit native mouse wheel behavior will
424 * return TRUE. These are TextArea, Choice, FileDialog, and
425 * List. All other Components return FALSE.
426 */
427 virtual BOOL InheritsNativeMouseWheelBehavior();
428
429 /* Determines whether the component is obscured by another window */
430 // Called on Toolkit thread
431 static jboolean _IsObscured(void *param);
432
433 /* Invalidate the specified rectangle. */
434 virtual void Invalidate(RECT* r);
435
436 /* Begin and end deferred window positioning. */
437 virtual void BeginValidate();
438 virtual void EndValidate();
439
440 /* Keyboard conversion routines. */
441 static void InitDynamicKeyMapTable();
442 static void BuildDynamicKeyMapTable();
443 static jint GetJavaModifiers();
444 static jint GetButton(int mouseButton);
445 static UINT GetButtonMK(int mouseButton);
446 static UINT WindowsKeyToJavaKey(UINT windowsKey, UINT modifiers, UINT character, BOOL isDeadKey);
447 static void JavaKeyToWindowsKey(UINT javaKey, UINT *windowsKey, UINT *modifiers, UINT originalWindowsKey);
448 static void UpdateDynPrimaryKeymap(UINT wkey, UINT jkeyLegacy, jint keyLocation, UINT modifiers);
449
450 INLINE static void AwtComponent::JavaKeyToWindowsKey(UINT javaKey,
451 UINT *windowsKey, UINT *modifiers)
452 {
453 JavaKeyToWindowsKey(javaKey, windowsKey, modifiers, IGNORE_KEY);
454 }
455
456 enum TransOps {NONE, LOAD, SAVE};
457
458 UINT WindowsKeyToJavaChar(UINT wkey, UINT modifiers, TransOps ops, BOOL &isDeadKey);
459
460 /* routines used for input method support */
461 void SetInputMethod(jobject im, BOOL useNativeCompWindow);
462 void SendInputMethodEvent(jint id, jstring text, int cClause,
463 int *rgClauseBoundary, jstring *rgClauseReading,
464 int cAttrBlock, int *rgAttrBoundary,
465 BYTE *rgAttrValue, int commitedTextLength,
466 int caretPos, int visiblePos);
467 void InquireCandidatePosition();
468 INLINE LPARAM GetCandidateType() { return m_bitsCandType; }
469 HWND ImmGetHWnd();
470 HIMC ImmAssociateContext(HIMC himc);
471 HWND GetProxyFocusOwner();
472
473 INLINE HWND GetProxyToplevelContainer() {
474 HWND proxyHWnd = GetProxyFocusOwner();
475 return ::GetAncestor(proxyHWnd, GA_ROOT); // a browser in case of EmbeddedFrame
476 }
477
478 void CallProxyDefWindowProc(UINT message,
479 WPARAM wParam,
480 LPARAM lParam,
481 LRESULT &retVal,
482 MsgRouting &mr);
483
484 /*
485 * Windows message handler functions
486 */
487 virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
488 virtual LRESULT DefWindowProc(UINT msg, WPARAM wParam, LPARAM lParam);
489
490 /* return true if msg is processed */
491 virtual MsgRouting PreProcessMsg(MSG& msg);
492
493 virtual MsgRouting WmCreate() {return mrDoDefault;}
494 virtual MsgRouting WmClose() {return mrDoDefault;}
495 virtual MsgRouting WmDestroy();
496 virtual MsgRouting WmNcDestroy();
497
498 virtual MsgRouting WmActivate(UINT nState, BOOL fMinimized, HWND opposite)
499 {
500 return mrDoDefault;
501 }
502
503 virtual MsgRouting WmEraseBkgnd(HDC hDC, BOOL& didErase)
504 {
505 return mrDoDefault;
506 }
507
508 virtual MsgRouting WmPaint(HDC hDC);
509 virtual MsgRouting WmGetMinMaxInfo(LPMINMAXINFO lpmmi);
510 virtual MsgRouting WmMove(int x, int y);
511 virtual MsgRouting WmSize(UINT type, int w, int h);
512 virtual MsgRouting WmSizing();
513 virtual MsgRouting WmShowWindow(BOOL show, UINT status);
514 virtual MsgRouting WmSetFocus(HWND hWndLost);
515 virtual MsgRouting WmKillFocus(HWND hWndGot);
516 virtual MsgRouting WmCtlColor(HDC hDC, HWND hCtrl,
517 UINT ctlColor, HBRUSH& retBrush);
518 virtual MsgRouting WmHScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
519 virtual MsgRouting WmVScroll(UINT scrollCode, UINT pos, HWND hScrollBar);
520
521 virtual MsgRouting WmMouseEnter(UINT flags, int x, int y);
522 virtual MsgRouting WmMouseDown(UINT flags, int x, int y, int button);
523 virtual MsgRouting WmMouseUp(UINT flags, int x, int y, int button);
524 virtual MsgRouting WmMouseMove(UINT flags, int x, int y);
525 virtual MsgRouting WmMouseExit(UINT flags, int x, int y);
526 virtual MsgRouting WmMouseWheel(UINT flags, int x, int y,
527 int wheelRotation);
528 virtual MsgRouting WmNcMouseDown(WPARAM hitTest, int x, int y, int button);
529 virtual MsgRouting WmNcMouseUp(WPARAM hitTest, int x, int y, int button);
530 virtual MsgRouting WmWindowPosChanging(LPARAM windowPos);
531 virtual MsgRouting WmWindowPosChanged(LPARAM windowPos);
532 virtual void WmTouch(WPARAM wParam, LPARAM lParam);
533
534 // NB: 64-bit: vkey is wParam of the message, but other API's take
535 // vkey parameters of type UINT, so we do the cast before dispatching.
536 virtual MsgRouting WmKeyDown(UINT vkey, UINT repCnt, UINT flags, BOOL system);
537 virtual MsgRouting WmKeyUp(UINT vkey, UINT repCnt, UINT flags, BOOL system);
538
539 virtual MsgRouting WmChar(UINT character, UINT repCnt, UINT flags, BOOL system);
540 virtual MsgRouting WmIMEChar(UINT character, UINT repCnt, UINT flags, BOOL system);
541 virtual MsgRouting WmInputLangChange(UINT charset, HKL hKeyBoardLayout);
542 virtual MsgRouting WmForwardChar(WCHAR character, LPARAM lParam,
543 BOOL synthethic);
544 virtual MsgRouting WmPaste();
545
546 virtual void SetCompositionWindow(RECT &r);
547 virtual void OpenCandidateWindow(int x, int y);
548 virtual void SetCandidateWindow(int iCandType, int x, int y);
549 virtual MsgRouting WmImeSetContext(BOOL fSet, LPARAM *lplParam);
550 virtual MsgRouting WmImeNotify(WPARAM subMsg, LPARAM bitsCandType);
551 virtual MsgRouting WmImeStartComposition();
552 virtual MsgRouting WmImeEndComposition();
553 virtual MsgRouting WmImeComposition(WORD wChar, LPARAM flags);
554
555 virtual MsgRouting WmTimer(UINT_PTR timerID) {return mrDoDefault;}
556
557 virtual MsgRouting WmCommand(UINT id, HWND hWndCtrl, UINT notifyCode);
558
559 /* reflected WmCommand from parent */
560 virtual MsgRouting WmNotify(UINT notifyCode);
561
562 virtual MsgRouting WmCompareItem(UINT /*ctrlId*/,
563 COMPAREITEMSTRUCT &compareInfo,
564 LRESULT &result);
565 virtual MsgRouting WmDeleteItem(UINT /*ctrlId*/,
566 DELETEITEMSTRUCT &deleteInfo);
567 virtual MsgRouting WmDrawItem(UINT ctrlId,
568 DRAWITEMSTRUCT &drawInfo);
569 virtual MsgRouting WmMeasureItem(UINT ctrlId,
570 MEASUREITEMSTRUCT &measureInfo);
571 /* Fix 4181790 & 4223341 : These functions get overridden in owner-drawn
572 * components instead of the Wm... versions.
573 */
574 virtual MsgRouting OwnerDrawItem(UINT ctrlId,
575 DRAWITEMSTRUCT &drawInfo);
576 virtual MsgRouting OwnerMeasureItem(UINT ctrlId,
577 MEASUREITEMSTRUCT &measureInfo);
578
579 virtual MsgRouting WmPrint(HDC hDC, LPARAM flags);
580 virtual MsgRouting WmPrintClient(HDC hDC, LPARAM flags);
581
582 virtual MsgRouting WmNcCalcSize(BOOL fCalcValidRects,
583 LPNCCALCSIZE_PARAMS lpncsp,
584 LRESULT &retVal);
585 virtual MsgRouting WmNcPaint(HRGN hrgn);
586 virtual MsgRouting WmNcHitTest(UINT x, UINT y, LRESULT &retVal);
587 virtual MsgRouting WmSysCommand(UINT uCmdType, int xPos, int yPos);
588 virtual MsgRouting WmExitSizeMove();
589 virtual MsgRouting WmEnterMenuLoop(BOOL isTrackPopupMenu);
590 virtual MsgRouting WmExitMenuLoop(BOOL isTrackPopupMenu);
591
592 virtual MsgRouting WmQueryNewPalette(LRESULT &retVal);
593 virtual MsgRouting WmPaletteChanged(HWND hwndPalChg);
594 virtual MsgRouting WmPaletteIsChanging(HWND hwndPalChg);
595 virtual MsgRouting WmStyleChanged(int wStyleType, LPSTYLESTRUCT lpss);
596 virtual MsgRouting WmSettingChange(UINT wFlag, LPCTSTR pszSection);
597
598 virtual MsgRouting WmContextMenu(HWND hCtrl, UINT xPos, UINT yPos) {
599 return mrDoDefault;
600 }
601
602 void UpdateColorModel();
603
604 jintArray CreatePrintedPixels(SIZE &loc, SIZE &size, int alpha);
605
606 /*
607 * HWND, AwtComponent and Java Peer interaction
608 *
609 * Link the C++, Java peer, and HWNDs together.
610 */
611 void LinkObjects(JNIEnv *env, jobject peer);
612
613 void UnlinkObjects();
614
615 static BOOL QueryNewPaletteCalled() { return m_QueryNewPaletteCalled; }
616
617 #ifdef DEBUG
618 virtual void VerifyState(); /* verify component and peer are in sync. */
619 #else
620 void VerifyState() {} /* no-op */
621 #endif
622
623 virtual AwtDropTarget* CreateDropTarget(JNIEnv* env);
624 virtual void DestroyDropTarget();
625
626 INLINE virtual HWND GetDBCSEditHandle() { return NULL; }
627 // State for native drawing API
628 INLINE jint GetDrawState() { return GetDrawState(m_hwnd); }
629 INLINE void SetDrawState(jint state) { SetDrawState(m_hwnd, state); } // State for native drawing API
630
631 INLINE virtual BOOL IsTopLevel() { return FALSE; }
632 INLINE virtual BOOL IsEmbeddedFrame() { return FALSE; }
633 INLINE virtual BOOL IsScrollbar() { return FALSE; }
634
635 static INLINE BOOL IsTopLevelHWnd(HWND hwnd) {
636 AwtComponent *comp = AwtComponent::GetComponent(hwnd);
637 return (comp != NULL && comp->IsTopLevel());
638 }
639 static INLINE BOOL IsEmbeddedFrameHWnd(HWND hwnd) {
640 AwtComponent *comp = AwtComponent::GetComponent(hwnd);
641 return (comp != NULL && comp->IsEmbeddedFrame());
642 }
643
644 static jint GetDrawState(HWND hwnd);
645 static void SetDrawState(HWND hwnd, jint state);
646
647 static HWND GetHWnd(JNIEnv* env, jobject target);
648
649 static MSG* CreateMessage(UINT message, WPARAM wParam, LPARAM lParam, int x, int y);
650 static void InitMessage(MSG* msg, UINT message, WPARAM wParam, LPARAM lParam, int x, int y);
651
652 // Some methods to be called on Toolkit thread via Toolkit.InvokeFunction()
653 static void _Show(void *param);
654 static void _Hide(void *param);
655 static void _Enable(void *param);
656 static void _Disable(void *param);
657 static jobject _GetLocationOnScreen(void *param);
658 static void _Reshape(void *param);
659 static void _ReshapeNoCheck(void *param);
660 static void _NativeHandleEvent(void *param);
661 static void _SetForeground(void *param);
662 static void _SetBackground(void *param);
663 static void _SetFont(void *param);
664 static void _Start(void *param);
665 static void _BeginValidate(void *param);
666 static void _EndValidate(void *param);
667 static void _UpdateWindow(void *param);
668 static jlong _AddNativeDropTarget(void *param);
669 static void _RemoveNativeDropTarget(void *param);
670 static jintArray _CreatePrintedPixels(void *param);
671 static jboolean _NativeHandlesWheelScrolling(void *param);
672 static void _SetRectangularShape(void *param);
673 static void _SetZOrder(void *param);
674
675 static HWND sm_focusOwner;
676
677 private:
678 static HWND sm_focusedWindow;
679
680 public:
681 static inline HWND GetFocusedWindow() { return sm_focusedWindow; }
682 static void SetFocusedWindow(HWND window);
683
684 static void _SetFocus(void *param);
685
686 static void *SetNativeFocusOwner(void *self);
687 static void *GetNativeFocusedWindow();
688 static void *GetNativeFocusOwner();
689
690 static BOOL sm_inSynthesizeFocus;
691
692 // Execute on Toolkit only.
693 INLINE static LRESULT SynthesizeWmSetFocus(HWND targetHWnd, HWND oppositeHWnd) {
694 sm_inSynthesizeFocus = TRUE;
695 LRESULT res = ::SendMessage(targetHWnd, WM_SETFOCUS, (WPARAM)oppositeHWnd, 0);
696 sm_inSynthesizeFocus = FALSE;
697 return res;
698 }
699 // Execute on Toolkit only.
700 INLINE static LRESULT SynthesizeWmKillFocus(HWND targetHWnd, HWND oppositeHWnd) {
701 sm_inSynthesizeFocus = TRUE;
702 LRESULT res = ::SendMessage(targetHWnd, WM_KILLFOCUS, (WPARAM)oppositeHWnd, 0);
703 sm_inSynthesizeFocus = FALSE;
704 return res;
705 }
706
707 static BOOL sm_bMenuLoop;
708 static INLINE BOOL isMenuLoopActive() {
709 return sm_bMenuLoop;
710 }
711
712 // when this component is being destroyed, this method is called
713 // to find out if there are any messages being processed, and if
714 // there are some then disposal of this component is postponed
715 virtual BOOL CanBeDeleted() {
716 return m_MessagesProcessing == 0;
717 }
718
719 BOOL IsDestroyPaused() const {
720 return m_bPauseDestroy;
721 }
722
723 protected:
724 static AwtComponent* GetComponentImpl(HWND hWnd);
725
726 static int GetClickCount();
727
728 HWND m_hwnd;
729 UINT m_myControlID; /* its own ID from the view point of parent */
730 BOOL m_backgroundColorSet;
731 BOOL m_visible; /* copy of Component.visible */
732
733 static BOOL sm_suppressFocusAndActivation;
734 static BOOL sm_restoreFocusAndActivation;
735
736 /*
737 * The function sets the focus-restore flag ON/OFF.
738 * When the flag is ON, focus is restored immidiately after the proxy loses it.
739 * All focus messages are suppressed. It's also assumed that sm_focusedWindow and
740 * sm_focusOwner don't change after the flag is set ON and before it's set OFF.
741 */
742 static INLINE void SetRestoreFocus(BOOL doSet) {
743 sm_suppressFocusAndActivation = doSet;
744 sm_restoreFocusAndActivation = doSet;
745 }
746
747 virtual void SetDragCapture(UINT flags);
748 virtual void ReleaseDragCapture(UINT flags);
749
750 virtual void FillBackground(HDC hMemoryDC, SIZE &size);
751 virtual void FillAlpha(void *bitmapBits, SIZE &size, BYTE alpha);
752
753 private:
754 /* A bitmask keeps the button's numbers as MK_LBUTTON, MK_MBUTTON, MK_RBUTTON
755 * which are allowed to
756 * generate the CLICK event after the RELEASE has happened.
757 * There are conditions that must be true for that sending CLICK event:
758 * 1) button was initially PRESSED
759 * 2) no movement or drag has happened until RELEASE
760 */
761 UINT m_mouseButtonClickAllowed;
762
763 BOOL m_touchDownOccurred;
764 BOOL m_touchUpOccurred;
765 POINT m_touchDownPoint;
766 POINT m_touchUpPoint;
767
768 BOOL m_bSubclassed;
769 BOOL m_bPauseDestroy;
770
771 COLORREF m_colorForeground;
772 COLORREF m_colorBackground;
773
774 AwtPen* m_penForeground;
775 AwtBrush* m_brushBackground;
776
777 WNDPROC m_DefWindowProc;
778 // counter for messages being processed by this component
779 UINT m_MessagesProcessing;
780
781 // provides a unique ID for child controls
782 UINT m_nextControlID;
783
784 // DeferWindowPos handle for batched-up window positioning
785 HDWP m_hdwp;
786 // Counter to handle nested calls to Begin/EndValidate
787 UINT m_validationNestCount;
788
789 AwtDropTarget* m_dropTarget; // associated DropTarget object
790
791 // When we process WM_INPUTLANGCHANGE we remember the keyboard
792 // layout handle and associated input language and codepage.
793 // We also invalidate VK translation table for VK_OEM_* codes
794 static HKL m_hkl;
795 static UINT m_CodePage;
796 static LANGID m_idLang;
797
798 static BOOL sm_rtl;
799 static BOOL sm_rtlReadingOrder;
800
801 static BOOL sm_PrimaryDynamicTableBuilt;
802
803 jobject m_InputMethod;
804 BOOL m_useNativeCompWindow;
805 LPARAM m_bitsCandType;
806 UINT m_PendingLeadByte;
807
808 void SetComponentInHWND();
809
810 // Determines whether a given virtual key is on the numpad
811 static BOOL IsNumPadKey(UINT vkey, BOOL extended);
812
813 // Determines the keyLocation of a given key
814 static jint GetKeyLocation(UINT wkey, UINT flags);
815 static jint GetShiftKeyLocation(UINT wkey, UINT flags);
816
817 // Cache for FindComponent
818 static HWND sm_cursorOn;
819
820 static BOOL m_QueryNewPaletteCalled;
821
822 static AwtComponent* sm_getComponentCache; // a cache for the GetComponent(..) method.
823
824 int windowMoveLockPosX;
825 int windowMoveLockPosY;
826 int windowMoveLockPosCX;
827 int windowMoveLockPosCY;
828
829 // 6524352: support finer-resolution
830 int m_wheelRotationAmount;
831
832 BOOL deadKeyActive;
833
834 /*
835 * The association list of children's IDs and corresponding components.
836 * Some components like Choice or List are required their sizes while
837 * the creations of themselfs are in progress.
838 */
839 class ChildListItem {
840 public:
841 ChildListItem(UINT id, AwtComponent* component) {
842 m_ID = id;
843 m_Component = component;
844 m_next = NULL;
845 }
846 ~ChildListItem() {
847 if (m_next != NULL)
848 delete m_next;
849 }
850
851 UINT m_ID;
852 AwtComponent* m_Component;
853 ChildListItem* m_next;
854 };
855
856 public:
857 INLINE void PushChild(UINT id, AwtComponent* component) {
858 ChildListItem* child = new ChildListItem(id, component);
859 child->m_next = m_childList;
860 m_childList = child;
861 }
862
863 static void SetParent(void * param);
864 private:
865 AwtComponent* SearchChild(UINT id);
866 void RemoveChild(UINT id) ;
867 static BOOL IsNavigationKey(UINT wkey);
868 static void BuildPrimaryDynamicTable();
869
870 ChildListItem* m_childList;
871
872 HCURSOR m_hCursorCache; // the latest cursor which has been active within the heavyweight component
873 public:
874 inline void setCursorCache(HCURSOR hCursor) {
875 m_hCursorCache = hCursor;
876 }
877 inline HCURSOR getCursorCache() {
878 return m_hCursorCache;
879 }
880 };
881
882 class CounterHelper {
883 private:
884 UINT *m_counter;
885 public:
886 explicit CounterHelper(UINT *counter) {
887 m_counter = counter;
888 (*m_counter)++;
889 }
890 ~CounterHelper() {
891 (*m_counter)--;
892 m_counter = NULL;
893 }
894 };
895
896 // DC management objects; these classes are used to track the list of
897 // DC's associated with a given Component. Then DC's can be released
898 // appropriately on demand or on window destruction to avoid resource
899 // leakage.
900 class DCItem {
901 public:
902 HDC hDC;
903 HWND hWnd;
904 DCItem *next;
905 };
906 class DCList {
907 DCItem *head;
908 CriticalSection listLock;
909 public:
910 DCList() { head = NULL; }
911
912 void AddDC(HDC hDC, HWND hWnd);
913 void AddDCItem(DCItem *newItem);
914 DCItem *RemoveDC(HDC hDC, HWND hWnd);
915 DCItem *RemoveAllDCs(HWND hWnd);
916 void RealizePalettes(int screen);
917 };
918
919 void ReleaseDCList(HWND hwnd, DCList &list);
920 void MoveDCToPassiveList(HDC hDC, HWND hWnd);
921
922 namespace TimeHelper{
923 jlong getMessageTimeUTC();
924 jlong windowsToUTC(DWORD event_offset);
925 }
926
927 #include "ObjectList.h"
928
929 #endif /* AWT_COMPONENT_H */