[MAGNIFY] Minor whitespace / formatting fixes; use the new file headers + some code...
[reactos.git] / base / applications / magnify / magnifier.c
1 /*
2 * PROJECT: ReactOS Magnify
3 * LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
4 * PURPOSE: Magnification of parts of the screen.
5 * COPYRIGHT: Copyright 2007-2019 Marc Piulachs <marc.piulachs@codexchange.net>
6 * Copyright 2015-2019 David Quintana <gigaherz@gmail.com>
7 */
8
9 /* TODO: Support AppBar types other than ABE_TOP */
10
11 #include "magnifier.h"
12
13 #include <winbase.h>
14 #include <winuser.h>
15 #include <wingdi.h>
16 #include <winnls.h>
17 #include <commctrl.h>
18 #include <shellapi.h>
19 #include <windowsx.h>
20 #include <stdlib.h>
21 #include <tchar.h>
22
23 #include "resource.h"
24
25 #define APPMSG_NOTIFYICON (WM_APP+1)
26 #define APPMSG_APPBAR (WM_APP+2)
27
28 const TCHAR szWindowClass[] = TEXT("MAGNIFIER");
29
30 /* Global Variables */
31 HINSTANCE hInst;
32 HWND hMainWnd;
33
34 #define MAX_LOADSTRING 100
35 TCHAR szTitle[MAX_LOADSTRING];
36
37 #define TIMER_SPEED 1
38 #define REPAINT_SPEED 100
39
40 DWORD lastTicks = 0;
41
42 HWND hDesktopWindow = NULL;
43
44 NOTIFYICONDATA nid;
45 HICON notifyIcon;
46 HMENU notifyMenu;
47 HWND hOptionsDialog;
48 BOOL bOptionsDialog = FALSE;
49 BOOL bRecreateOffscreenDC = TRUE;
50 LONG sourceWidth = 0;
51 LONG sourceHeight = 0;
52 HDC hdcOffscreen = NULL;
53 HBITMAP hbmpOffscreen = NULL;
54 HANDLE hbmpOld;
55 POINT ptDragOffset;
56 INT nearEdge;
57
58 /* Current magnified area */
59 POINT cp;
60
61 /* Last positions */
62 POINT pMouse;
63 POINT pCaret;
64 POINT pFocus;
65 HWND pCaretWnd;
66 HWND pFocusWnd;
67
68 ATOM MyRegisterClass(HINSTANCE hInstance);
69 BOOL InitInstance(HINSTANCE, int);
70 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
71 INT_PTR CALLBACK AboutProc(HWND, UINT, WPARAM, LPARAM);
72 INT_PTR CALLBACK OptionsProc(HWND, UINT, WPARAM, LPARAM);
73 INT_PTR CALLBACK WarningProc(HWND, UINT, WPARAM, LPARAM);
74
75 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
76 {
77 MSG msg;
78 HACCEL hAccelTable;
79 INITCOMMONCONTROLSEX iccex;
80
81 UNREFERENCED_PARAMETER(hPrevInstance);
82 UNREFERENCED_PARAMETER(lpCmdLine);
83
84 switch (GetUserDefaultUILanguage())
85 {
86 case MAKELANGID(LANG_HEBREW, SUBLANG_DEFAULT):
87 SetProcessDefaultLayout(LAYOUT_RTL);
88 break;
89
90 default:
91 break;
92 }
93
94 /* Initialize global strings */
95 LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
96 MyRegisterClass(hInstance);
97
98 /* Perform application initialization */
99 if (!InitInstance(hInstance, nCmdShow))
100 return FALSE;
101
102 hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MAGNIFIER));
103
104 /* Main message loop */
105 while (GetMessage(&msg, NULL, 0, 0))
106 {
107 if (!TranslateAccelerator(hMainWnd, hAccelTable, &msg))
108 {
109 TranslateMessage(&msg);
110 DispatchMessage(&msg);
111 }
112 }
113
114 /* Load the common controls */
115 iccex.dwSize = sizeof(INITCOMMONCONTROLSEX);
116 iccex.dwICC = ICC_STANDARD_CLASSES | ICC_WIN95_CLASSES;
117 InitCommonControlsEx(&iccex);
118
119 SelectObject(hdcOffscreen, hbmpOld);
120 DeleteObject (hbmpOffscreen);
121 DeleteDC(hdcOffscreen);
122
123 return (int) msg.wParam;
124 }
125
126 ATOM MyRegisterClass(HINSTANCE hInstance)
127 {
128 WNDCLASS wc;
129
130 wc.style = CS_HREDRAW | CS_VREDRAW;
131 wc.lpfnWndProc = WndProc;
132 wc.cbClsExtra = 0;
133 wc.cbWndExtra = 0;
134 wc.hInstance = hInstance;
135 wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON));
136 wc.hCursor = LoadCursor(NULL, IDC_ARROW);
137 wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
138 wc.lpszMenuName = NULL; //MAKEINTRESOURCE(IDC_MAGNIFIER);
139 wc.lpszClassName = szWindowClass;
140
141 return RegisterClass(&wc);
142 }
143
144 void DoAppBarStuff(DWORD mode)
145 {
146 UINT uState;
147 APPBARDATA data = {0};
148 data.cbSize = sizeof(data);
149 data.hWnd = hMainWnd;
150 data.uCallbackMessage = APPMSG_APPBAR;
151
152 if (mode == ABM_NEW || mode == ABM_SETPOS)
153 {
154 HWND hWndOrder = HWND_BOTTOM;
155 int rcw, rch;
156 RECT rcWorkArea;
157 SystemParametersInfo(SPI_GETWORKAREA, 0, &rcWorkArea, 0);
158
159 if (mode == ABM_NEW)
160 {
161 SHAppBarMessage(ABM_NEW, &data);
162
163 switch(AppBarConfig.uEdge)
164 {
165 case ABE_LEFT:
166 data.rc.top = rcWorkArea.top;
167 data.rc.bottom = rcWorkArea.bottom;
168 data.rc.left = rcWorkArea.left;
169 data.rc.right = data.rc.left + AppBarConfig.appBarSizes.left;
170 break;
171 case ABE_TOP:
172 data.rc.left = rcWorkArea.left;
173 data.rc.right = rcWorkArea.right;
174 data.rc.top = rcWorkArea.top;
175 data.rc.bottom = data.rc.top + AppBarConfig.appBarSizes.top;
176 break;
177 case ABE_RIGHT:
178 data.rc.top = rcWorkArea.top;
179 data.rc.bottom = rcWorkArea.bottom;
180 data.rc.right = rcWorkArea.left;
181 data.rc.left = data.rc.right - AppBarConfig.appBarSizes.right;
182 break;
183 case ABE_BOTTOM:
184 data.rc.left = rcWorkArea.left;
185 data.rc.right = rcWorkArea.right;
186 data.rc.bottom = rcWorkArea.bottom;
187 data.rc.top = data.rc.bottom - AppBarConfig.appBarSizes.bottom;
188 break;
189 }
190 }
191 else
192 {
193 GetWindowRect(hMainWnd, &data.rc);
194 }
195
196 data.uEdge = AppBarConfig.uEdge;
197 uState = SHAppBarMessage(ABM_QUERYPOS, &data);
198 uState = SHAppBarMessage(ABM_SETPOS, &data);
199
200 rcw = data.rc.right-data.rc.left;
201 rch = data.rc.bottom-data.rc.top;
202
203 uState = SHAppBarMessage(ABM_GETSTATE, &data);
204 if (uState & ABS_ALWAYSONTOP)
205 hWndOrder = HWND_TOPMOST;
206
207 SetWindowPos(hMainWnd, hWndOrder, data.rc.left, data.rc.top, rcw, rch, SWP_SHOWWINDOW | SWP_NOCOPYBITS);
208
209 }
210 else if (mode == ABM_GETSTATE)
211 {
212 HWND hWndOrder = HWND_BOTTOM;
213 uState = SHAppBarMessage(ABM_GETSTATE, &data);
214 if (uState & ABS_ALWAYSONTOP)
215 hWndOrder = HWND_TOPMOST;
216 SetWindowPos(hMainWnd, hWndOrder, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
217 }
218 else if (mode == ABM_ACTIVATE)
219 {
220 SHAppBarMessage(ABM_ACTIVATE, &data);
221 }
222 else if (mode == ABM_WINDOWPOSCHANGED)
223 {
224 SHAppBarMessage(ABM_WINDOWPOSCHANGED, &data);
225 }
226 else if (mode == ABM_REMOVE)
227 {
228 SHAppBarMessage(ABM_REMOVE, &data);
229 }
230 }
231
232 void AttachAppBar(INT uEdge)
233 {
234 if (AppBarConfig.uEdge == uEdge)
235 return;
236
237 if (AppBarConfig.uEdge < 0 && uEdge >= 0)
238 {
239 SetWindowLongPtr(hMainWnd, GWL_STYLE, GetWindowLongPtr(hMainWnd, GWL_STYLE) & (~WS_CAPTION));
240 }
241 else if (uEdge < 0 && AppBarConfig.uEdge >= 0)
242 {
243 SetWindowLongPtr(hMainWnd, GWL_STYLE, GetWindowLongPtr(hMainWnd, GWL_STYLE) | WS_CAPTION);
244 SetWindowPos(hMainWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);
245 }
246
247 if (AppBarConfig.uEdge >= 0)
248 {
249 DoAppBarStuff(ABM_REMOVE);
250 }
251
252 if (uEdge >= 0)
253 {
254 AppBarConfig.uEdge = uEdge;
255 DoAppBarStuff(ABM_NEW);
256 }
257 else
258 {
259 RECT rc = AppBarConfig.rcFloating;
260 SetWindowPos(hMainWnd, HWND_TOPMOST, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top, 0);
261 }
262
263 AppBarConfig.uEdge = uEdge;
264 }
265
266 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
267 {
268 RECT rc;
269 DWORD exStyles = WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT;
270 DWORD dwStyles = WS_SIZEBOX | WS_SYSMENU | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_POPUP;
271
272 /* Load settings from registry */
273 LoadSettings();
274
275 rc = AppBarConfig.rcFloating;
276
277 hInst = hInstance; // Store instance handle in our global variable
278
279 if (AppBarConfig.uEdge <0 )
280 {
281 dwStyles |= WS_CAPTION;
282 exStyles |= WS_EX_TOPMOST;
283 }
284
285 /* Create the Window */
286 hMainWnd = CreateWindowEx(exStyles,
287 szWindowClass,
288 szTitle,
289 dwStyles,
290 rc.left,
291 rc.top,
292 rc.right-rc.left,
293 rc.bottom-rc.top,
294 NULL,
295 NULL,
296 hInstance,
297 NULL);
298 if (!hMainWnd)
299 return FALSE;
300
301 if (AppBarConfig.uEdge >= 0)
302 DoAppBarStuff(ABM_NEW);
303 else
304 SetWindowPos(hMainWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
305
306 // In Windows 2003's Magnifier, the "Start Minimized" setting
307 // refers exclusively to the options dialog, not the main window itself.
308 hOptionsDialog = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOGOPTIONS), hMainWnd, OptionsProc);
309 ShowWindow(hOptionsDialog, (bStartMinimized ? SW_HIDE : SW_SHOW));
310
311 if (bShowWarning)
312 DialogBox(hInstance, MAKEINTRESOURCE(IDD_WARNINGDIALOG), hMainWnd, WarningProc);
313
314 return TRUE;
315 }
316
317 void Refresh(void)
318 {
319 if (!IsIconic(hMainWnd))
320 {
321 /* Invalidate the client area forcing a WM_PAINT message */
322 InvalidateRgn(hMainWnd, NULL, TRUE);
323 }
324 }
325
326 void GetBestOverlapWithMonitors(LPRECT rect)
327 {
328 int rcLeft, rcTop;
329 int rcWidth, rcHeight;
330 RECT rcMon;
331 HMONITOR hMon = MonitorFromRect(rect, MONITOR_DEFAULTTONEAREST);
332 MONITORINFO info;
333 info.cbSize = sizeof(info);
334
335 GetMonitorInfo(hMon, &info);
336
337 rcMon = info.rcMonitor;
338
339 rcLeft = rect->left;
340 rcTop = rect->top;
341 rcWidth = (rect->right - rect->left);
342 rcHeight = (rect->bottom - rect->top);
343
344 if (rcLeft < rcMon.left)
345 rcLeft = rcMon.left;
346
347 if (rcTop < rcMon.top)
348 rcTop = rcMon.top;
349
350 if (rcLeft > (rcMon.right - rcWidth))
351 rcLeft = (rcMon.right - rcWidth);
352
353 if (rcTop > (rcMon.bottom - rcHeight))
354 rcTop = (rcMon.bottom - rcHeight);
355
356 OffsetRect(rect, (rcLeft-rect->left), (rcTop-rect->top));
357 }
358
359 void Draw(HDC aDc)
360 {
361 HDC desktopHdc = NULL;
362
363 RECT sourceRect, intersectedRect;
364 RECT targetRect, appRect;
365 DWORD rop = SRCCOPY;
366 CURSORINFO cinfo;
367 ICONINFO iinfo;
368
369 int AppWidth, AppHeight;
370
371 if (bInvertColors)
372 rop = NOTSRCCOPY;
373
374 desktopHdc = GetDC(0);
375
376 GetClientRect(hMainWnd, &appRect);
377 AppWidth = (appRect.right - appRect.left);
378 AppHeight = (appRect.bottom - appRect.top);
379
380 ZeroMemory(&cinfo, sizeof(cinfo));
381 ZeroMemory(&iinfo, sizeof(iinfo));
382 cinfo.cbSize = sizeof(cinfo);
383 GetCursorInfo(&cinfo);
384 GetIconInfo(cinfo.hCursor, &iinfo);
385
386 targetRect = appRect;
387 ClientToScreen(hMainWnd, (POINT*)&targetRect.left);
388 ClientToScreen(hMainWnd, (POINT*)&targetRect.right);
389
390 if (bRecreateOffscreenDC || !hdcOffscreen)
391 {
392 bRecreateOffscreenDC = FALSE;
393
394 if (hdcOffscreen)
395 {
396 SelectObject(hdcOffscreen, hbmpOld);
397 DeleteObject (hbmpOffscreen);
398 DeleteDC(hdcOffscreen);
399 }
400
401 sourceWidth = AppWidth / uiZoom;
402 sourceHeight = AppHeight / uiZoom;
403
404 /* Create a memory DC compatible with client area DC */
405 hdcOffscreen = CreateCompatibleDC(desktopHdc);
406
407 /* Create a bitmap compatible with the client area DC */
408 hbmpOffscreen = CreateCompatibleBitmap(desktopHdc,
409 sourceWidth,
410 sourceHeight);
411
412 /* Select our bitmap in memory DC and save the old one */
413 hbmpOld = SelectObject(hdcOffscreen, hbmpOffscreen);
414 }
415
416 GetWindowRect(hDesktopWindow, &sourceRect);
417 sourceRect.left = (cp.x) - (sourceWidth /2);
418 sourceRect.top = (cp.y) - (sourceHeight /2);
419 sourceRect.right = sourceRect.left + sourceWidth;
420 sourceRect.bottom = sourceRect.top + sourceHeight;
421
422 GetBestOverlapWithMonitors(&sourceRect);
423
424 /* Paint the screen bitmap to our in memory DC */
425 BitBlt(hdcOffscreen,
426 0,
427 0,
428 sourceWidth,
429 sourceHeight,
430 desktopHdc,
431 sourceRect.left,
432 sourceRect.top,
433 rop);
434
435 if (IntersectRect(&intersectedRect, &sourceRect, &targetRect))
436 {
437 OffsetRect(&intersectedRect, -sourceRect.left, -sourceRect.top);
438 FillRect(hdcOffscreen, &intersectedRect, GetStockObject(DC_BRUSH));
439 }
440
441 /* Draw the mouse pointer in the right position */
442 DrawIcon(hdcOffscreen,
443 pMouse.x - iinfo.xHotspot - sourceRect.left, // - 10,
444 pMouse.y - iinfo.yHotspot - sourceRect.top, // - 10,
445 cinfo.hCursor);
446
447 /* Blast the stretched image from memory DC to window DC */
448 StretchBlt(aDc,
449 0,
450 0,
451 AppWidth,
452 AppHeight,
453 hdcOffscreen,
454 0,
455 0,
456 sourceWidth,
457 sourceHeight,
458 SRCCOPY | NOMIRRORBITMAP);
459
460 /* Cleanup */
461 if (iinfo.hbmMask)
462 DeleteObject(iinfo.hbmMask);
463 if (iinfo.hbmColor)
464 DeleteObject(iinfo.hbmColor);
465 ReleaseDC(hDesktopWindow, desktopHdc);
466 }
467
468 void HandleNotifyIconMessage(HWND hWnd, WPARAM wParam, LPARAM lParam)
469 {
470 POINT pt;
471
472 switch(lParam)
473 {
474 case WM_LBUTTONUP:
475 PostMessage(hMainWnd, WM_COMMAND, IDM_OPTIONS, 0);
476 break;
477 case WM_RBUTTONUP:
478 GetCursorPos(&pt);
479 TrackPopupMenu(notifyMenu, 0, pt.x, pt.y, 0, hWnd, NULL);
480 break;
481 }
482 }
483
484 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
485 {
486 int wmId;
487
488 switch (message)
489 {
490 case WM_TIMER:
491 {
492 BOOL hasMoved = FALSE;
493
494 GUITHREADINFO guiInfo;
495 guiInfo.cbSize = sizeof(guiInfo);
496
497 GetGUIThreadInfo(0, &guiInfo);
498
499 if (bFollowMouse)
500 {
501 POINT pNewMouse;
502
503 //Get current mouse position
504 GetCursorPos (&pNewMouse);
505
506 #define PointsAreEqual(pt1, pt2) (((pt1).x == (pt2).x) && ((pt1).y == (pt2).y))
507
508 //If mouse has moved ...
509 if (!PointsAreEqual(pMouse, pNewMouse))
510 {
511 //Update to new position
512 pMouse = pNewMouse;
513 cp = pNewMouse;
514 hasMoved = TRUE;
515 }
516 }
517
518 if (guiInfo.hwndActive != hMainWnd)
519 {
520 if (bFollowCaret)
521 {
522 if (guiInfo.hwndCaret)
523 {
524 POINT ptCaret;
525 ptCaret.x = (guiInfo.rcCaret.left + guiInfo.rcCaret.right) / 2;
526 ptCaret.y = (guiInfo.rcCaret.top + guiInfo.rcCaret.bottom) / 2;
527
528 if ((pCaretWnd != guiInfo.hwndCaret) || !PointsAreEqual(pCaret, ptCaret))
529 {
530 //Update to new position
531 pCaret = ptCaret;
532 pCaretWnd = guiInfo.hwndCaret;
533 if (!hasMoved)
534 {
535 ClientToScreen (guiInfo.hwndCaret, (LPPOINT) &ptCaret);
536 cp = ptCaret;
537 hasMoved = TRUE;
538 }
539 }
540 }
541 else
542 {
543 pCaretWnd = NULL;
544 }
545 }
546
547 if (bFollowFocus)
548 {
549 if (guiInfo.hwndFocus && !guiInfo.hwndCaret)
550 {
551 POINT ptFocus;
552 RECT activeRect;
553
554 //Get current control focus
555 GetWindowRect(guiInfo.hwndFocus, &activeRect);
556 ptFocus.x = (activeRect.left + activeRect.right) / 2;
557 ptFocus.y = (activeRect.top + activeRect.bottom) / 2;
558
559 if ((guiInfo.hwndFocus != pFocusWnd) || !PointsAreEqual(pFocus, ptFocus))
560 {
561 //Update to new position
562 pFocus = ptFocus;
563 pFocusWnd = guiInfo.hwndFocus;
564 if (!hasMoved)
565 {
566 cp = ptFocus;
567 hasMoved = TRUE;
568 }
569 }
570 }
571 else
572 {
573 pFocusWnd = NULL;
574 }
575 }
576 }
577
578 if (!hasMoved)
579 {
580 DWORD newTicks = GetTickCount();
581 DWORD elapsed = (newTicks - lastTicks);
582 if (elapsed > REPAINT_SPEED)
583 {
584 hasMoved = TRUE;
585 }
586 }
587
588 if (hasMoved)
589 {
590 lastTicks = GetTickCount();
591 Refresh();
592 }
593
594 return 0;
595 }
596
597 case WM_COMMAND:
598 {
599 wmId = LOWORD(wParam);
600 /* Parse the menu selections */
601 switch (wmId)
602 {
603 case IDM_OPTIONS:
604 ShowWindow(hOptionsDialog, (bOptionsDialog ? SW_HIDE : SW_SHOW));
605 break;
606 case IDM_ABOUT:
607 DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, AboutProc);
608 break;
609 case IDM_EXIT:
610 DestroyWindow(hWnd);
611 break;
612 default:
613 return DefWindowProc(hWnd, message, wParam, lParam);
614 }
615 return 0;
616 }
617
618 case WM_PAINT:
619 {
620 PAINTSTRUCT PaintStruct;
621 HDC dc;
622 dc = BeginPaint(hWnd, &PaintStruct);
623 Draw(dc);
624 EndPaint(hWnd, &PaintStruct);
625 return 0;
626 }
627
628 case WM_CONTEXTMENU:
629 TrackPopupMenu(notifyMenu, 0, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), 0, hWnd, NULL);
630 return 0;
631
632 case WM_LBUTTONDOWN:
633 {
634 RECT rc;
635 POINT pt;
636 SetCapture(hWnd);
637
638 GetCursorPos(&pt);
639 GetWindowRect(hWnd, &rc);
640 ptDragOffset.x = pt.x - rc.left;
641 ptDragOffset.y = pt.y - rc.top;
642
643 nearEdge = AppBarConfig.uEdge;
644
645 break;
646 }
647
648 case WM_MOUSEMOVE:
649 if (GetCapture() == hWnd)
650 {
651 RECT rc;
652 POINT pt;
653 RECT rcWorkArea;
654 SystemParametersInfo(SPI_GETWORKAREA, 0, &rcWorkArea, 0);
655 GetCursorPos(&pt);
656 GetWindowRect(hWnd, &rc);
657
658 if (AppBarConfig.uEdge >= 0)
659 {
660 if (pt.x >= rcWorkArea.left && pt.x <= rcWorkArea.right &&
661 pt.y >= rcWorkArea.top && pt.y <= rcWorkArea.bottom)
662 {
663 AttachAppBar(-2);
664
665 // Fixup offset
666 GetWindowRect(hWnd, &rc);
667 ptDragOffset.x = (rc.right-rc.left)/2;
668 ptDragOffset.y = 2;
669
670 rc.left = pt.x - ptDragOffset.x;
671 rc.top = pt.y - ptDragOffset.y;
672
673 SetWindowPos(hWnd, HWND_TOPMOST, rc.left, rc.top, 0, 0, SWP_NOSIZE);
674 }
675 }
676 else
677 {
678 if (pt.x <= rcWorkArea.left+8 && nearEdge != ABE_LEFT)
679 {
680 AttachAppBar(ABE_LEFT);
681 nearEdge = ABE_LEFT;
682 }
683 else if (pt.y <= rcWorkArea.top+8 && nearEdge != ABE_TOP)
684 {
685 AttachAppBar(ABE_TOP);
686 nearEdge = ABE_TOP;
687 }
688 else if (pt.x >= rcWorkArea.right-8 && nearEdge != ABE_RIGHT)
689 {
690 AttachAppBar(ABE_RIGHT);
691 nearEdge = ABE_RIGHT;
692 }
693 else if (pt.y >= rcWorkArea.bottom-8 && nearEdge != ABE_BOTTOM)
694 {
695 AttachAppBar(ABE_BOTTOM);
696 nearEdge = ABE_BOTTOM;
697 }
698 else
699 {
700 rc.left = pt.x - ptDragOffset.x;
701 rc.top = pt.y - ptDragOffset.y;
702
703 SetWindowPos(hWnd, HWND_TOPMOST, rc.left, rc.top, 0, 0, SWP_NOSIZE);
704 nearEdge = -1;
705 }
706 }
707
708 pMouse = pt;
709 Refresh();
710 }
711 break;
712
713 case WM_LBUTTONUP:
714 if (GetCapture() == hWnd)
715 {
716 if (AppBarConfig.uEdge >= 0)
717 DoAppBarStuff(ABM_GETSTATE);
718 else
719 SetWindowPos(hWnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
720 ReleaseCapture();
721 }
722 break;
723
724 case WM_SIZE:
725 if (AppBarConfig.uEdge >= 0)
726 DoAppBarStuff(ABM_SETPOS);
727 /* fallthrough */
728 case WM_DISPLAYCHANGE:
729 bRecreateOffscreenDC = TRUE;
730 Refresh();
731 break;
732
733 case WM_ERASEBKGND:
734 // handle WM_ERASEBKGND by simply returning non-zero because we did all the drawing in WM_PAINT.
735 return 0;
736
737 case WM_DESTROY:
738 {
739 if (AppBarConfig.uEdge >= 0)
740 DoAppBarStuff(ABM_REMOVE);
741
742 KillTimer(hWnd, 1);
743
744 /* Save settings to registry */
745 SaveSettings();
746
747 /* Cleanup notification icon */
748 ZeroMemory(&nid, sizeof(nid));
749 nid.cbSize = sizeof(nid);
750 nid.uFlags = NIF_MESSAGE;
751 nid.hWnd = hWnd;
752 nid.uCallbackMessage = APPMSG_NOTIFYICON;
753 Shell_NotifyIcon(NIM_DELETE, &nid);
754 DestroyIcon(notifyIcon);
755
756 DestroyWindow(hOptionsDialog);
757
758 PostQuitMessage(0);
759 return 0;
760 }
761
762 case WM_CREATE:
763 {
764 HMENU tempMenu;
765
766 /* Get the desktop window */
767 hDesktopWindow = GetDesktopWindow();
768
769 /* Set the timer */
770 SetTimer(hWnd, 1, TIMER_SPEED, NULL);
771
772 /* Notification icon */
773 notifyIcon = (HICON)LoadImage(hInst, MAKEINTRESOURCE(IDI_ICON), IMAGE_ICON, 16, 16, 0);
774
775 ZeroMemory(&nid, sizeof(nid));
776 nid.cbSize = sizeof(nid);
777 nid.uFlags = NIF_ICON | NIF_MESSAGE;
778 nid.hWnd = hWnd;
779 nid.uCallbackMessage = APPMSG_NOTIFYICON;
780 nid.hIcon = notifyIcon;
781 Shell_NotifyIcon(NIM_ADD, &nid);
782
783 tempMenu = LoadMenu(hInst, MAKEINTRESOURCE(IDC_MAGNIFIER));
784 notifyMenu = GetSubMenu(tempMenu, 0);
785 RemoveMenu(tempMenu, 0, MF_BYPOSITION);
786 DestroyMenu(tempMenu);
787 return 0;
788 }
789
790 case APPMSG_APPBAR:
791 {
792 switch (wParam)
793 {
794 case ABN_STATECHANGE:
795 DoAppBarStuff(ABM_GETSTATE);
796 break;
797 case ABN_POSCHANGED:
798 DoAppBarStuff(ABM_SETPOS);
799 break;
800 case ABN_FULLSCREENAPP:
801 {
802 if (!lParam)
803 {
804 DoAppBarStuff(ABM_GETSTATE);
805 break;
806 }
807
808 SetWindowPos(hMainWnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
809 break;
810 }
811 case ABN_WINDOWARRANGE:
812 ShowWindow(hMainWnd, (lParam ? SW_HIDE : SW_SHOW));
813 break;
814 }
815 return 0;
816 }
817
818 case APPMSG_NOTIFYICON:
819 HandleNotifyIconMessage(hWnd, wParam, lParam);
820 return 0;
821
822 case WM_ACTIVATE:
823 if (AppBarConfig.uEdge >= 0)
824 DoAppBarStuff(ABM_ACTIVATE);
825 break;
826
827 case WM_WINDOWPOSCHANGED:
828 if (AppBarConfig.uEdge >= 0)
829 DoAppBarStuff(ABM_WINDOWPOSCHANGED);
830 Refresh();
831 break;
832
833 default:
834 break;
835 }
836
837 return DefWindowProc(hWnd, message, wParam, lParam);
838 }
839
840 INT_PTR CALLBACK AboutProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
841 {
842 UNREFERENCED_PARAMETER(lParam);
843 switch (message)
844 {
845 case WM_INITDIALOG:
846 return (INT_PTR)TRUE;
847
848 case WM_COMMAND:
849 if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
850 {
851 EndDialog(hDlg, LOWORD(wParam));
852 return (INT_PTR)TRUE;
853 }
854 break;
855 }
856
857 return (INT_PTR)FALSE;
858 }
859
860 INT_PTR CALLBACK OptionsProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
861 {
862 UNREFERENCED_PARAMETER(lParam);
863
864 switch (message)
865 {
866 case WM_INITDIALOG:
867 {
868 /* Add the zoom items */
869 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("1"));
870 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("2"));
871 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("3"));
872 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("4"));
873 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("5"));
874 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("6"));
875 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("7"));
876 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("8"));
877 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_ADDSTRING, 0, (LPARAM)("9"));
878
879 if (uiZoom >= 1 && uiZoom <= 9)
880 SendDlgItemMessage(hDlg, IDC_ZOOM, CB_SETCURSEL, uiZoom - 1, 0);
881
882 if (bFollowMouse)
883 SendDlgItemMessage(hDlg,IDC_FOLLOWMOUSECHECK,BM_SETCHECK, wParam, 0);
884
885 if (bFollowFocus)
886 SendDlgItemMessage(hDlg,IDC_FOLLOWKEYBOARDCHECK,BM_SETCHECK, wParam, 0);
887
888 if (bFollowCaret)
889 SendDlgItemMessage(hDlg,IDC_FOLLOWTEXTEDITINGCHECK,BM_SETCHECK, wParam, 0);
890
891 if (bInvertColors)
892 SendDlgItemMessage(hDlg,IDC_INVERTCOLORSCHECK,BM_SETCHECK, wParam, 0);
893
894 if (bStartMinimized)
895 SendDlgItemMessage(hDlg,IDC_STARTMINIMIZEDCHECK,BM_SETCHECK, wParam, 0);
896
897 if (bShowMagnifier)
898 SendDlgItemMessage(hDlg,IDC_SHOWMAGNIFIERCHECK,BM_SETCHECK, wParam, 0);
899
900 return (INT_PTR)TRUE;
901 }
902
903 case WM_SHOWWINDOW:
904 bOptionsDialog = wParam;
905 break;
906
907 case WM_COMMAND:
908 switch (LOWORD(wParam))
909 {
910 case IDOK:
911 case IDCANCEL:
912 ShowWindow(hDlg, SW_HIDE);
913 return (INT_PTR)TRUE;
914
915 case IDC_BUTTON_HELP:
916 /* Unimplemented */
917 MessageBox(hDlg, TEXT("Magnifier help not available yet!"), TEXT("Help"), MB_OK);
918 break;
919
920 case IDC_ZOOM:
921 if (HIWORD(wParam) == CBN_SELCHANGE)
922 {
923 HWND hCombo = GetDlgItem(hDlg,IDC_ZOOM);
924 TCHAR currentZoomValue[2] = TEXT("");
925
926 /* Get index of current selection and the text of that selection */
927 int currentSelectionIndex = ComboBox_GetCurSel(hCombo);
928 ComboBox_GetLBText(hCombo, currentSelectionIndex, currentZoomValue);
929 uiZoom = (UINT)_ttoi(currentZoomValue);
930 /* The zoom factor cannot be smaller than 1 (and not zero) or greater than 9 */
931 if (uiZoom < 1 || uiZoom > 9)
932 uiZoom = 1;
933
934 /* Trigger the Draw function to rezoom (which will be set false automatically after rezooming) */
935 bRecreateOffscreenDC = TRUE;
936
937 /* Update the magnifier UI */
938 Refresh();
939 }
940 break;
941
942 case IDC_INVERTCOLORSCHECK:
943 bInvertColors = IsDlgButtonChecked(hDlg, IDC_INVERTCOLORSCHECK);
944 Refresh();
945 break;
946 case IDC_FOLLOWMOUSECHECK:
947 bFollowMouse = IsDlgButtonChecked(hDlg, IDC_FOLLOWMOUSECHECK);
948 break;
949 case IDC_FOLLOWKEYBOARDCHECK:
950 bFollowFocus = IsDlgButtonChecked(hDlg, IDC_FOLLOWKEYBOARDCHECK);
951 break;
952 case IDC_FOLLOWTEXTEDITINGCHECK:
953 bFollowCaret = IsDlgButtonChecked(hDlg, IDC_FOLLOWTEXTEDITINGCHECK);
954 break;
955 case IDC_STARTMINIMIZEDCHECK:
956 bStartMinimized = IsDlgButtonChecked(hDlg, IDC_STARTMINIMIZEDCHECK);
957 break;
958 case IDC_SHOWMAGNIFIER:
959 bShowMagnifier = IsDlgButtonChecked(hDlg, IDC_SHOWMAGNIFIERCHECK);
960 ShowWindow(hMainWnd, (bShowMagnifier ? SW_SHOW : SW_HIDE));
961 break;
962 }
963 }
964
965 return (INT_PTR)FALSE;
966 }
967
968 INT_PTR CALLBACK WarningProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
969 {
970 UNREFERENCED_PARAMETER(lParam);
971
972 switch (message)
973 {
974 case WM_INITDIALOG:
975 return (INT_PTR)TRUE;
976
977 case WM_COMMAND:
978 switch (LOWORD(wParam))
979 {
980 case IDC_SHOWWARNINGCHECK:
981 bShowWarning = !IsDlgButtonChecked(hDlg, IDC_SHOWWARNINGCHECK);
982 break;
983 }
984 if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
985 {
986 EndDialog(hDlg, LOWORD(wParam));
987 return (INT_PTR)TRUE;
988 }
989 break;
990 }
991
992 return (INT_PTR)FALSE;
993 }