xref: /haiku/src/apps/workspaces/Workspaces.cpp (revision aed35104852941f0f6f3d1dcc5338b5f337d0a3c) 
1 /*
2  * Copyright 2002-2009, Haiku, Inc. All rights reserved.
3  * Copyright 2002, François Revol, revol@free.fr.
4  * This file is distributed under the terms of the MIT License.
5  *
6  * Authors:
7  *		François Revol, revol@free.fr
8  *		Axel Dörfler, axeld@pinc-software.de
9  *		Oliver "Madison" Kohl,
10  *		Matt Madia
11  */
12 
13 
14 #include <Alert.h>
15 #include <Application.h>
16 #include <Catalog.h>
17 #include <Deskbar.h>
18 #include <Dragger.h>
19 #include <Entry.h>
20 #include <File.h>
21 #include <FindDirectory.h>
22 #include <Locale.h>
23 #include <MenuItem.h>
24 #include <Path.h>
25 #include <PopUpMenu.h>
26 #include <Roster.h>
27 #include <Screen.h>
28 #include <TextView.h>
29 #include <Window.h>
30 
31 #include <ctype.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 
36 #include <InterfacePrivate.h>
37 #include <ViewPrivate.h>
38 #include <WindowPrivate.h>
39 
40 #undef B_TRANSLATION_CONTEXT
41 #define B_TRANSLATION_CONTEXT "Workspaces"
42 
43 
44 static const char* kDeskbarItemName = "workspaces";
45 static const char* kSignature = "application/x-vnd.Be-WORK";
46 static const char* kDeskbarSignature = "application/x-vnd.Be-TSKB";
47 static const char* kScreenPrefletSignature = "application/x-vnd.Haiku-Screen";
48 static const char* kOldSettingFile = "Workspace_data";
49 static const char* kSettingsFile = "Workspaces_settings";
50 
51 static const uint32 kMsgChangeCount = 'chWC';
52 static const uint32 kMsgToggleTitle = 'tgTt';
53 static const uint32 kMsgToggleBorder = 'tgBd';
54 static const uint32 kMsgToggleAutoRaise = 'tgAR';
55 static const uint32 kMsgToggleAlwaysOnTop = 'tgAT';
56 static const uint32 kMsgToggleLiveInDeskbar = 'tgDb';
57 
58 static const float kScreenBorderOffset = 10.0;
59 
60 extern "C" _EXPORT BView* instantiate_deskbar_item();
61 
62 class WorkspacesSettings {
63 	public:
64 		WorkspacesSettings();
65 		virtual ~WorkspacesSettings();
66 
67 		BRect WindowFrame() const { return fWindowFrame; }
68 		BRect ScreenFrame() const { return fScreenFrame; }
69 
70 		bool AutoRaising() const { return fAutoRaising; }
71 		bool AlwaysOnTop() const { return fAlwaysOnTop; }
72 		bool HasTitle() const { return fHasTitle; }
73 		bool HasBorder() const { return fHasBorder; }
74 
75 		void UpdateFramesForScreen(BRect screenFrame);
76 		void UpdateScreenFrame();
77 
78 		void SetWindowFrame(BRect);
79 		void SetAutoRaising(bool enable) { fAutoRaising = enable; }
80 		void SetAlwaysOnTop(bool enable) { fAlwaysOnTop = enable; }
81 		void SetHasTitle(bool enable) { fHasTitle = enable; }
82 		void SetHasBorder(bool enable) { fHasBorder = enable; }
83 
84 	private:
85 		status_t _Open(BFile& file, int mode);
86 
87 		BRect	fWindowFrame;
88 		BRect	fScreenFrame;
89 		bool	fAutoRaising;
90 		bool	fAlwaysOnTop;
91 		bool	fHasTitle;
92 		bool	fHasBorder;
93 };
94 
95 class WorkspacesView : public BView {
96 	public:
97 		WorkspacesView(BRect frame, bool showDragger);
98 		WorkspacesView(BMessage* archive);
99 		~WorkspacesView();
100 
101 		static	WorkspacesView* Instantiate(BMessage* archive);
102 		virtual	status_t Archive(BMessage* archive, bool deep = true) const;
103 
104 		virtual void AttachedToWindow();
105 		virtual void DetachedFromWindow();
106 		virtual void FrameMoved(BPoint newPosition);
107 		virtual void FrameResized(float newWidth, float newHeight);
108 		virtual void MessageReceived(BMessage* message);
109 		virtual void MouseMoved(BPoint where, uint32 transit,
110 			const BMessage* dragMessage);
111 		virtual void MouseDown(BPoint where);
112 
113 	private:
114 		void _AboutRequested();
115 
116 		void _UpdateParentClipping();
117 		void _ExcludeFromParentClipping();
118 		void _CleanupParentClipping();
119 
120 		BView*	fParentWhichDrawsOnChildren;
121 		BRect	fCurrentFrame;
122 };
123 
124 class WorkspacesWindow : public BWindow {
125 	public:
126 		WorkspacesWindow(WorkspacesSettings *settings);
127 		virtual ~WorkspacesWindow();
128 
129 		virtual void ScreenChanged(BRect frame, color_space mode);
130 		virtual void FrameMoved(BPoint origin);
131 		virtual void FrameResized(float width, float height);
132 		virtual void Zoom(BPoint origin, float width, float height);
133 
134 		virtual void MessageReceived(BMessage *msg);
135 		virtual bool QuitRequested();
136 
137 		void SetAutoRaise(bool enable);
138 		bool IsAutoRaising() const { return fAutoRaising; }
139 
140 	private:
141 		WorkspacesSettings *fSettings;
142 		bool	fAutoRaising;
143 };
144 
145 class WorkspacesApp : public BApplication {
146 	public:
147 		WorkspacesApp();
148 		virtual ~WorkspacesApp();
149 
150 		virtual void AboutRequested();
151 		virtual void ArgvReceived(int32 argc, char **argv);
152 		virtual void ReadyToRun();
153 
154 		void Usage(const char *programName);
155 
156 	private:
157 		WorkspacesWindow*	fWindow;
158 };
159 
160 
161 WorkspacesSettings::WorkspacesSettings()
162 	:
163 	fAutoRaising(false),
164 	fAlwaysOnTop(false),
165 	fHasTitle(true),
166 	fHasBorder(true)
167 {
168 	UpdateScreenFrame();
169 
170 	bool loaded = false;
171 	BScreen screen;
172 
173 	BFile file;
174 	if (_Open(file, B_READ_ONLY) == B_OK) {
175 		BMessage settings;
176 		if (settings.Unflatten(&file) == B_OK) {
177 			if (settings.FindRect("window", &fWindowFrame) == B_OK
178 				&& settings.FindRect("screen", &fScreenFrame) == B_OK)
179 				loaded = true;
180 
181 			settings.FindBool("auto-raise", &fAutoRaising);
182 			settings.FindBool("always on top", &fAlwaysOnTop);
183 
184 			if (settings.FindBool("has title", &fHasTitle) != B_OK)
185 				fHasTitle = true;
186 			if (settings.FindBool("has border", &fHasBorder) != B_OK)
187 				fHasBorder = true;
188 		}
189 	} else {
190 		// try reading BeOS compatible settings
191 		BPath path;
192 		if (find_directory(B_USER_SETTINGS_DIRECTORY, &path) == B_OK) {
193 			path.Append(kOldSettingFile);
194 			BFile file(path.Path(), B_READ_ONLY);
195 			if (file.InitCheck() == B_OK
196 				&& file.Read(&fWindowFrame, sizeof(BRect)) == sizeof(BRect)) {
197 				// we now also store the frame of the screen to know
198 				// in which context the window frame has been chosen
199 				BRect frame;
200 				if (file.Read(&frame, sizeof(BRect)) == sizeof(BRect))
201 					fScreenFrame = frame;
202 				else
203 					fScreenFrame = screen.Frame();
204 
205 				loaded = true;
206 			}
207 		}
208 	}
209 
210 	if (loaded) {
211 		// if the current screen frame is different from the one
212 		// just loaded, we need to alter the window frame accordingly
213 		if (fScreenFrame != screen.Frame())
214 			UpdateFramesForScreen(screen.Frame());
215 	}
216 
217 	if (!loaded
218 		|| !(screen.Frame().right + 5 >= fWindowFrame.right
219 			&& screen.Frame().bottom + 5 >= fWindowFrame.bottom
220 			&& screen.Frame().left - 5 <= fWindowFrame.left
221 			&& screen.Frame().top - 5 <= fWindowFrame.top)) {
222 		// set to some usable defaults
223 		float screenWidth = screen.Frame().Width();
224 		float screenHeight = screen.Frame().Height();
225 		float aspectRatio = screenWidth / screenHeight;
226 
227 		uint32 columns, rows;
228 		BPrivate::get_workspaces_layout(&columns, &rows);
229 
230 		// default size of ~1/10 of screen width
231 		float workspaceWidth = screenWidth / 10;
232 		float workspaceHeight = workspaceWidth / aspectRatio;
233 
234 		float width = floor(workspaceWidth * columns);
235 		float height = floor(workspaceHeight * rows);
236 
237 		float tabHeight = 20;
238 			// TODO: find tabHeight without being a window
239 
240 		// shrink to fit more
241 		while (width + 2 * kScreenBorderOffset > screenWidth
242 			|| height + 2 * kScreenBorderOffset + tabHeight > screenHeight) {
243 			width = floor(0.95 * width);
244 			height = floor(0.95 * height);
245 		}
246 
247 		fWindowFrame = fScreenFrame;
248 		fWindowFrame.OffsetBy(-kScreenBorderOffset, -kScreenBorderOffset);
249 		fWindowFrame.left = fWindowFrame.right - width;
250 		fWindowFrame.top = fWindowFrame.bottom - height;
251 	}
252 }
253 
254 
255 WorkspacesSettings::~WorkspacesSettings()
256 {
257 	// write settings file
258 	BFile file;
259 	if (_Open(file, B_WRITE_ONLY | B_CREATE_FILE | B_ERASE_FILE) != B_OK)
260 		return;
261 
262 	BMessage settings('wksp');
263 
264 	if (settings.AddRect("window", fWindowFrame) == B_OK
265 		&& settings.AddRect("screen", fScreenFrame) == B_OK
266 		&& settings.AddBool("auto-raise", fAutoRaising) == B_OK
267 		&& settings.AddBool("always on top", fAlwaysOnTop) == B_OK
268 		&& settings.AddBool("has title", fHasTitle) == B_OK
269 		&& settings.AddBool("has border", fHasBorder) == B_OK)
270 		settings.Flatten(&file);
271 }
272 
273 
274 status_t
275 WorkspacesSettings::_Open(BFile& file, int mode)
276 {
277 	BPath path;
278 	status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path);
279 	 if (status != B_OK)
280 		status = find_directory(B_COMMON_SETTINGS_DIRECTORY, &path);
281 	 if (status != B_OK)
282 		return status;
283 
284 	path.Append(kSettingsFile);
285 
286 	status = file.SetTo(path.Path(), mode);
287 	if (mode == B_READ_ONLY && status == B_ENTRY_NOT_FOUND) {
288 		if (find_directory(B_COMMON_SETTINGS_DIRECTORY, &path) == B_OK) {
289 			path.Append(kSettingsFile);
290 			status = file.SetTo(path.Path(), mode);
291 		}
292 	}
293 
294 	return status;
295 }
296 
297 
298 void
299 WorkspacesSettings::UpdateFramesForScreen(BRect newScreenFrame)
300 {
301 	// don't change the position if the screen frame hasn't changed
302 	if (newScreenFrame == fScreenFrame)
303 		return;
304 
305 	// adjust horizontal position
306 	if (fWindowFrame.right > fScreenFrame.right / 2) {
307 		fWindowFrame.OffsetTo(newScreenFrame.right
308 			- (fScreenFrame.right - fWindowFrame.left), fWindowFrame.top);
309 	}
310 
311 	// adjust vertical position
312 	if (fWindowFrame.bottom > fScreenFrame.bottom / 2) {
313 		fWindowFrame.OffsetTo(fWindowFrame.left,
314 			newScreenFrame.bottom - (fScreenFrame.bottom - fWindowFrame.top));
315 	}
316 
317 	fScreenFrame = newScreenFrame;
318 }
319 
320 
321 void
322 WorkspacesSettings::UpdateScreenFrame()
323 {
324 	BScreen screen;
325 	fScreenFrame = screen.Frame();
326 }
327 
328 
329 void
330 WorkspacesSettings::SetWindowFrame(BRect frame)
331 {
332 	fWindowFrame = frame;
333 }
334 
335 
336 //	#pragma mark -
337 
338 
339 WorkspacesView::WorkspacesView(BRect frame, bool showDragger=true)
340 	:
341 	BView(frame, kDeskbarItemName, B_FOLLOW_ALL,
342 		kWorkspacesViewFlag | B_FRAME_EVENTS),
343 	fParentWhichDrawsOnChildren(NULL),
344 	fCurrentFrame(frame)
345 {
346 	if(showDragger) {
347 		frame.OffsetTo(B_ORIGIN);
348 		frame.top = frame.bottom - 7;
349 		frame.left = frame.right - 7;
350 		BDragger* dragger = new BDragger(frame, this,
351 			B_FOLLOW_RIGHT | B_FOLLOW_BOTTOM);
352 		AddChild(dragger);
353 	}
354 }
355 
356 
357 WorkspacesView::WorkspacesView(BMessage* archive)
358 	:
359 	BView(archive),
360 	fParentWhichDrawsOnChildren(NULL),
361 	fCurrentFrame(Frame())
362 {
363 	// Just in case we are instantiated from an older archive...
364 	SetFlags(Flags() | B_FRAME_EVENTS);
365 	// Make sure the auto-raise feature didn't leave any artifacts - this is
366 	// not a good idea to keep enabled for a replicant.
367 	if (EventMask() != 0)
368 		SetEventMask(0);
369 }
370 
371 
372 WorkspacesView::~WorkspacesView()
373 {
374 }
375 
376 
377 /*static*/ WorkspacesView*
378 WorkspacesView::Instantiate(BMessage* archive)
379 {
380 	if (!validate_instantiation(archive, "WorkspacesView"))
381 		return NULL;
382 
383 	return new WorkspacesView(archive);
384 }
385 
386 
387 status_t
388 WorkspacesView::Archive(BMessage* archive, bool deep) const
389 {
390 	status_t status = BView::Archive(archive, deep);
391 	if (status == B_OK)
392 		status = archive->AddString("add_on", kSignature);
393 	if (status == B_OK)
394 		status = archive->AddString("class", "WorkspacesView");
395 
396 	return status;
397 }
398 
399 
400 void
401 WorkspacesView::_AboutRequested()
402 {
403 	BString text = B_TRANSLATE("Workspaces\n"
404 		"written by %1, and %2.\n\n"
405 		"Copyright %3, Haiku.\n\n"
406 		"Send windows behind using the Option key. "
407 		"Move windows to front using the Control key.\n");
408 	text.ReplaceFirst("%1", "François Revol, Axel Dörfler");
409 	text.ReplaceFirst("%2", "Matt Madia");
410 	text.ReplaceFirst("%3", "2002-2008");
411 
412 	BAlert *alert = new BAlert("about", text.String(), B_TRANSLATE("OK"));
413 	BTextView *view = alert->TextView();
414 	BFont font;
415 
416 	view->SetStylable(true);
417 
418 	view->GetFont(&font);
419 	font.SetSize(18);
420 	font.SetFace(B_BOLD_FACE);
421 	view->SetFontAndColor(0, 10, &font);
422 
423 	alert->SetFlags(alert->Flags() | B_CLOSE_ON_ESCAPE);
424 	alert->Go();
425 }
426 
427 
428 void
429 WorkspacesView::AttachedToWindow()
430 {
431 	BView* parent = Parent();
432 	if (parent != NULL && (parent->Flags() & B_DRAW_ON_CHILDREN) != 0) {
433 		fParentWhichDrawsOnChildren = parent;
434 		_ExcludeFromParentClipping();
435 	}
436 }
437 
438 
439 void
440 WorkspacesView::DetachedFromWindow()
441 {
442 	if (fParentWhichDrawsOnChildren != NULL)
443 		_CleanupParentClipping();
444 }
445 
446 
447 void
448 WorkspacesView::FrameMoved(BPoint newPosition)
449 {
450 	_UpdateParentClipping();
451 }
452 
453 
454 void
455 WorkspacesView::FrameResized(float newWidth, float newHeight)
456 {
457 	_UpdateParentClipping();
458 }
459 
460 
461 void
462 WorkspacesView::_UpdateParentClipping()
463 {
464 	if (fParentWhichDrawsOnChildren != NULL) {
465 		_CleanupParentClipping();
466 		_ExcludeFromParentClipping();
467 		fParentWhichDrawsOnChildren->Invalidate(fCurrentFrame);
468 		fCurrentFrame = Frame();
469 	}
470 }
471 
472 
473 void
474 WorkspacesView::_ExcludeFromParentClipping()
475 {
476 	// Prevent the parent view to draw over us. Do so in a way that allows
477 	// restoring the parent to the previous state.
478 	fParentWhichDrawsOnChildren->PushState();
479 
480 	BRegion clipping(fParentWhichDrawsOnChildren->Bounds());
481 	clipping.Exclude(Frame());
482 	fParentWhichDrawsOnChildren->ConstrainClippingRegion(&clipping);
483 }
484 
485 
486 void
487 WorkspacesView::_CleanupParentClipping()
488 {
489 	// Restore the previous parent state. NOTE: This relies on views
490 	// being detached in exactly the opposite order as them being
491 	// attached. Otherwise we would mess up states if a sibbling view did
492 	// the same thing we did in AttachedToWindow()...
493 	fParentWhichDrawsOnChildren->PopState();
494 }
495 
496 
497 void
498 WorkspacesView::MessageReceived(BMessage* message)
499 {
500 	switch (message->what) {
501 		case B_ABOUT_REQUESTED:
502 			_AboutRequested();
503 			break;
504 
505 		case kMsgChangeCount:
506 			be_roster->Launch(kScreenPrefletSignature);
507 			break;
508 
509 		case kMsgToggleLiveInDeskbar:
510 		{
511 			// only actually used from the replicant itself
512 			// since HasItem() locks up we just remove directly.
513 			BDeskbar deskbar;
514 			// we shouldn't do this here actually, but it works for now...
515 			deskbar.RemoveItem (kDeskbarItemName);
516 			break;
517 		}
518 
519 		default:
520 			BView::MessageReceived(message);
521 			break;
522 	}
523 }
524 
525 
526 void
527 WorkspacesView::MouseMoved(BPoint where, uint32 transit,
528 	const BMessage* dragMessage)
529 {
530 	WorkspacesWindow* window = dynamic_cast<WorkspacesWindow*>(Window());
531 	if (window == NULL || !window->IsAutoRaising())
532 		return;
533 
534 	// Auto-Raise
535 
536 	where = ConvertToScreen(where);
537 	BScreen screen(window);
538 	BRect frame = screen.Frame();
539 	if (where.x == frame.left || where.x == frame.right
540 		|| where.y == frame.top || where.y == frame.bottom) {
541 		// cursor is on screen edge
542 		if (window->Frame().Contains(where))
543 			window->Activate();
544 	}
545 }
546 
547 
548 void
549 WorkspacesView::MouseDown(BPoint where)
550 {
551 	// With enabled auto-raise feature, we'll get mouse messages we don't
552 	// want to handle here.
553 	if (!Bounds().Contains(where))
554 		return;
555 
556 	int32 buttons = 0;
557 	if (Window() != NULL && Window()->CurrentMessage() != NULL)
558 		Window()->CurrentMessage()->FindInt32("buttons", &buttons);
559 
560 	if ((buttons & B_SECONDARY_MOUSE_BUTTON) == 0)
561 		return;
562 
563 	// open context menu
564 
565 	BPopUpMenu *menu = new BPopUpMenu(B_EMPTY_STRING, false, false);
566 	menu->SetFont(be_plain_font);
567 
568 	// TODO: alternatively change the count here directly?
569 	BMenuItem* changeItem = new BMenuItem(B_TRANSLATE("Change workspace count"
570 		B_UTF8_ELLIPSIS), new BMessage(kMsgChangeCount));
571 	menu->AddItem(changeItem);
572 
573 	WorkspacesWindow* window = dynamic_cast<WorkspacesWindow*>(Window());
574 	if (window != NULL) {
575 		// inside Workspaces app
576 		BMenuItem* item;
577 
578 		menu->AddSeparatorItem();
579 		menu->AddItem(item = new BMenuItem(B_TRANSLATE("Show window tab"),
580 			new BMessage(kMsgToggleTitle)));
581 		if (window->Look() == B_TITLED_WINDOW_LOOK)
582 			item->SetMarked(true);
583 		menu->AddItem(item = new BMenuItem(B_TRANSLATE("Show window border"),
584 			new BMessage(kMsgToggleBorder)));
585 		if (window->Look() == B_TITLED_WINDOW_LOOK
586 			|| window->Look() == B_MODAL_WINDOW_LOOK)
587 			item->SetMarked(true);
588 
589 		menu->AddSeparatorItem();
590 		menu->AddItem(item = new BMenuItem(B_TRANSLATE("Always on top"),
591 			new BMessage(kMsgToggleAlwaysOnTop)));
592 		if (window->Feel() == B_FLOATING_ALL_WINDOW_FEEL)
593 			item->SetMarked(true);
594 		menu->AddItem(item = new BMenuItem(B_TRANSLATE("Auto-raise"),
595 			new BMessage(kMsgToggleAutoRaise)));
596 		if (window->IsAutoRaising())
597 			item->SetMarked(true);
598 		if (be_roster->IsRunning(kDeskbarSignature)) {
599 			menu->AddItem(item = new BMenuItem(B_TRANSLATE("Live in the Deskbar"),
600 				new BMessage(kMsgToggleLiveInDeskbar)));
601 			BDeskbar deskbar;
602 			item->SetMarked(deskbar.HasItem(kDeskbarItemName));
603 		}
604 
605 		menu->AddSeparatorItem();
606 		menu->AddItem(new BMenuItem(B_TRANSLATE("About Workspaces"
607 			B_UTF8_ELLIPSIS), new BMessage(B_ABOUT_REQUESTED)));
608 		menu->AddItem(new BMenuItem(B_TRANSLATE("Quit"),
609 			new BMessage(B_QUIT_REQUESTED)));
610 		menu->SetTargetForItems(window);
611 	} else {
612 		// we're replicated in some way...
613 		BMenuItem* item;
614 
615 		menu->AddSeparatorItem();
616 
617 		// check which way
618 		BDragger *dragger = dynamic_cast<BDragger*>(ChildAt(0));
619 		if (dragger) {
620 			// replicant
621 			menu->AddItem(item = new BMenuItem(B_TRANSLATE("Remove replicant"),
622 				new BMessage(B_TRASH_TARGET)));
623 			item->SetTarget(dragger);
624 		} else {
625 			// Deskbar item
626 			menu->AddItem(item = new BMenuItem(B_TRANSLATE("Remove replicant"),
627 				new BMessage(kMsgToggleLiveInDeskbar)));
628 			item->SetTarget(this);
629 		}
630 	}
631 
632 	changeItem->SetTarget(this);
633 	ConvertToScreen(&where);
634 	menu->Go(where, true, true, true);
635 }
636 
637 
638 //	#pragma mark -
639 
640 
641 WorkspacesWindow::WorkspacesWindow(WorkspacesSettings *settings)
642 	:
643 	BWindow(settings->WindowFrame(), B_TRANSLATE_SYSTEM_NAME("Workspaces"),
644 		B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
645 		B_AVOID_FRONT | B_WILL_ACCEPT_FIRST_CLICK, B_ALL_WORKSPACES),
646  	fSettings(settings),
647  	fAutoRaising(false)
648 {
649 	AddChild(new WorkspacesView(Bounds()));
650 
651 	if (!fSettings->HasBorder())
652 		SetLook(B_NO_BORDER_WINDOW_LOOK);
653 	else if (!fSettings->HasTitle())
654 		SetLook(B_MODAL_WINDOW_LOOK);
655 
656 	if (fSettings->AlwaysOnTop())
657 		SetFeel(B_FLOATING_ALL_WINDOW_FEEL);
658 	else
659 		SetAutoRaise(fSettings->AutoRaising());
660 }
661 
662 
663 WorkspacesWindow::~WorkspacesWindow()
664 {
665 	delete fSettings;
666 }
667 
668 
669 void
670 WorkspacesWindow::ScreenChanged(BRect rect, color_space mode)
671 {
672 	fSettings->UpdateFramesForScreen(rect);
673 	MoveTo(fSettings->WindowFrame().LeftTop());
674 }
675 
676 
677 void
678 WorkspacesWindow::FrameMoved(BPoint origin)
679 {
680 	fSettings->SetWindowFrame(Frame());
681 }
682 
683 
684 void
685 WorkspacesWindow::FrameResized(float width, float height)
686 {
687 	if (!modifiers() & B_SHIFT_KEY) {
688 		BWindow::FrameResized(width, height);
689 		return;
690 	}
691 
692 	uint32 columns, rows;
693 	BPrivate::get_workspaces_layout(&columns, &rows);
694 
695 	BScreen screen;
696 	float screenWidth = screen.Frame().Width();
697 	float screenHeight = screen.Frame().Height();
698 
699 	float windowAspectRatio
700 		= (columns * screenWidth) / (rows * screenHeight);
701 
702 	float newHeight = width / windowAspectRatio;
703 
704 	if (height != newHeight)
705 		ResizeTo(width, newHeight);
706 
707 	fSettings->SetWindowFrame(Frame());
708 }
709 
710 
711 void
712 WorkspacesWindow::Zoom(BPoint origin, float width, float height)
713 {
714 	BScreen screen;
715 	float screenWidth = screen.Frame().Width();
716 	float screenHeight = screen.Frame().Height();
717 	float aspectRatio = screenWidth / screenHeight;
718 
719 	uint32 columns, rows;
720 	BPrivate::get_workspaces_layout(&columns, &rows);
721 
722 	float workspaceWidth = screenWidth / 10;
723 	float workspaceHeight = workspaceWidth / aspectRatio;
724 
725 	width = floor(workspaceWidth * columns);
726 	height = floor(workspaceHeight * rows);
727 
728 	float tabHeight = Frame().top - DecoratorFrame().top;
729 
730 	while (width + 2 * kScreenBorderOffset > screenWidth
731 		|| height + 2 * kScreenBorderOffset + tabHeight > screenHeight) {
732 		width = floor(0.95 * width);
733 		height = floor(0.95 * height);
734 	}
735 
736 	ResizeTo(width, height);
737 
738 	origin = screen.Frame().RightBottom();
739 	origin.x -= kScreenBorderOffset + width;
740 	origin.y -= kScreenBorderOffset + height;
741 
742 	MoveTo(origin);
743 }
744 
745 
746 void
747 WorkspacesWindow::MessageReceived(BMessage *message)
748 {
749 	switch (message->what) {
750 		case B_SIMPLE_DATA:
751 		{
752 			// Drop from Tracker
753 			entry_ref ref;
754 			for (int i = 0; (message->FindRef("refs", i, &ref) == B_OK); i++)
755 				be_roster->Launch(&ref);
756 			break;
757 		}
758 
759 		case B_ABOUT_REQUESTED:
760 			PostMessage(message, ChildAt(0));
761 			break;
762 
763 		case kMsgToggleBorder:
764 		{
765 			bool enable = false;
766 			if (Look() == B_NO_BORDER_WINDOW_LOOK)
767 				enable = true;
768 
769 			if (enable)
770 				if (fSettings->HasTitle())
771 					SetLook(B_TITLED_WINDOW_LOOK);
772 				else
773 					SetLook(B_MODAL_WINDOW_LOOK);
774 			else
775 				SetLook(B_NO_BORDER_WINDOW_LOOK);
776 
777 			fSettings->SetHasBorder(enable);
778 			break;
779 		}
780 
781 		case kMsgToggleTitle:
782 		{
783 			bool enable = false;
784 			if (Look() == B_MODAL_WINDOW_LOOK
785 				|| Look() == B_NO_BORDER_WINDOW_LOOK)
786 				enable = true;
787 
788 			if (enable)
789 				SetLook(B_TITLED_WINDOW_LOOK);
790 			else
791 				SetLook(B_MODAL_WINDOW_LOOK);
792 
793 			// No matter what the setting for title,
794 			// we must force the border on
795 			fSettings->SetHasBorder(true);
796 			fSettings->SetHasTitle(enable);
797 			break;
798 		}
799 
800 		case kMsgToggleAutoRaise:
801 			SetAutoRaise(!IsAutoRaising());
802 			SetFeel(B_NORMAL_WINDOW_FEEL);
803 			break;
804 
805 		case kMsgToggleAlwaysOnTop:
806 		{
807 			bool enable = false;
808 			if (Feel() != B_FLOATING_ALL_WINDOW_FEEL)
809 				enable = true;
810 
811 			if (enable)
812 				SetFeel(B_FLOATING_ALL_WINDOW_FEEL);
813 			else
814 				SetFeel(B_NORMAL_WINDOW_FEEL);
815 
816 			fSettings->SetAlwaysOnTop(enable);
817 			break;
818 		}
819 
820 		case kMsgToggleLiveInDeskbar:
821 		{
822 			BDeskbar deskbar;
823 			if (deskbar.HasItem (kDeskbarItemName))
824 				deskbar.RemoveItem (kDeskbarItemName);
825 			else {
826 				entry_ref ref;
827 				be_roster->FindApp(kSignature, &ref);
828 				deskbar.AddItem(&ref);
829 			}
830 			break;
831 		}
832 
833 		default:
834 			BWindow::MessageReceived(message);
835 			break;
836 	}
837 }
838 
839 
840 bool
841 WorkspacesWindow::QuitRequested()
842 {
843 	be_app->PostMessage(B_QUIT_REQUESTED);
844 	return true;
845 }
846 
847 
848 void
849 WorkspacesWindow::SetAutoRaise(bool enable)
850 {
851 	if (enable == fAutoRaising)
852 		return;
853 
854 	fAutoRaising = enable;
855 	fSettings->SetAutoRaising(enable);
856 
857 	if (enable)
858 		ChildAt(0)->SetEventMask(B_POINTER_EVENTS, B_NO_POINTER_HISTORY);
859 	else
860 		ChildAt(0)->SetEventMask(0);
861 }
862 
863 
864 //	#pragma mark -
865 
866 
867 WorkspacesApp::WorkspacesApp()
868 	: BApplication(kSignature)
869 {
870 	fWindow = new WorkspacesWindow(new WorkspacesSettings());
871 }
872 
873 
874 WorkspacesApp::~WorkspacesApp()
875 {
876 }
877 
878 
879 void
880 WorkspacesApp::AboutRequested()
881 {
882 	fWindow->PostMessage(B_ABOUT_REQUESTED);
883 }
884 
885 
886 void
887 WorkspacesApp::Usage(const char *programName)
888 {
889 	printf(B_TRANSLATE("Usage: %s [options] [workspace]\n"
890 		"where \"options\" are:\n"
891 		"  --notitle\t\ttitle bar removed, border and resize kept\n"
892 		"  --noborder\t\ttitle, border, and resize removed\n"
893 		"  --avoidfocus\t\tprevents the window from being the target of "
894 		"keyboard events\n"
895 		"  --alwaysontop\t\tkeeps window on top\n"
896 		"  --notmovable\t\twindow can't be moved around\n"
897 		"  --autoraise\t\tauto-raise the workspace window when it's at the "
898 		"screen edge\n"
899 		"  --help\t\tdisplay this help and exit\n"
900 		"and \"workspace\" is the number of the Workspace to which to switch "
901 		"(0-31)\n"),
902 		programName);
903 
904 	// quit only if we aren't running already
905 	if (IsLaunching())
906 		Quit();
907 }
908 
909 
910 void
911 WorkspacesApp::ArgvReceived(int32 argc, char **argv)
912 {
913 	for (int i = 1;  i < argc;  i++) {
914 		if (argv[i][0] == '-' && argv[i][1] == '-') {
915 			// evaluate --arguments
916 			if (!strcmp(argv[i], "--notitle"))
917 				fWindow->SetLook(B_MODAL_WINDOW_LOOK);
918 			else if (!strcmp(argv[i], "--noborder"))
919 				fWindow->SetLook(B_NO_BORDER_WINDOW_LOOK);
920 			else if (!strcmp(argv[i], "--avoidfocus"))
921 				fWindow->SetFlags(fWindow->Flags() | B_AVOID_FOCUS);
922 			else if (!strcmp(argv[i], "--notmovable"))
923 				fWindow->SetFlags(fWindow->Flags() | B_NOT_MOVABLE);
924 			else if (!strcmp(argv[i], "--alwaysontop"))
925 				fWindow->SetFeel(B_FLOATING_ALL_WINDOW_FEEL);
926 			else if (!strcmp(argv[i], "--autoraise"))
927 				fWindow->SetAutoRaise(true);
928 			else {
929 				const char *programName = strrchr(argv[0], '/');
930 				programName = programName ? programName + 1 : argv[0];
931 
932 				Usage(programName);
933 			}
934 		} else if (isdigit(*argv[i])) {
935 			// check for a numeric arg, if not already given
936 			activate_workspace(atoi(argv[i]));
937 
938 			// if the app is running, don't quit
939 			// but if it isn't, cancel the complete run, so it doesn't
940 			// open any window
941 			if (IsLaunching())
942 				Quit();
943 		} else if (!strcmp(argv[i], "-")) {
944 			activate_workspace(current_workspace() - 1);
945 
946 			if (IsLaunching())
947 				Quit();
948 		} else if (!strcmp(argv[i], "+")) {
949 			activate_workspace(current_workspace() + 1);
950 
951 			if (IsLaunching())
952 				Quit();
953 		} else {
954 			// some unknown arguments were specified
955 			fprintf(stderr, B_TRANSLATE("Invalid argument: %s\n"), argv[i]);
956 
957 			if (IsLaunching())
958 				Quit();
959 		}
960 	}
961 }
962 
963 
964 BView* instantiate_deskbar_item()
965 {
966 	// Calculate the correct size of the Deskbar replicant first
967 
968 	BScreen screen;
969 	float screenWidth = screen.Frame().Width();
970 	float screenHeight = screen.Frame().Height();
971 	float aspectRatio = screenWidth / screenHeight;
972 	uint32 columns, rows;
973 	BPrivate::get_workspaces_layout(&columns, &rows);
974 
975 	// ╔═╤═╕ A Deskbar replicant can be 16px tall and 129px wide at most.
976 	// ║ │ │ We use 1px for the top and left borders (shown as double)
977 	// ╟─┼─┤ and divide the remainder equally. However, we keep in mind
978 	// ║ │ │ that the actual width and height of each workspace is smaller
979 	// ╙─┴─┘ by 1px, because of bottom/right borders (shown as single).
980 	// When calculating workspace width, we must ensure that the assumed
981 	// actual workspace height is not negative. Zero is OK.
982 
983 	float height = 16;
984 	float rowHeight = floor((height - 1) / rows);
985 	if (rowHeight < 1)
986 		rowHeight = 1;
987 
988 	float columnWidth = floor((rowHeight - 1) * aspectRatio) + 1;
989 
990 	float width = columnWidth * columns + 1;
991 	if (width > 129)
992 		width = 129;
993 
994 	return new WorkspacesView(BRect (0, 0, width - 1, height - 1), false);
995 }
996 
997 
998 void
999 WorkspacesApp::ReadyToRun()
1000 {
1001 	fWindow->Show();
1002 }
1003 
1004 
1005 //	#pragma mark -
1006 
1007 
1008 int
1009 main(int argc, char **argv)
1010 {
1011 	WorkspacesApp app;
1012 	app.Run();
1013 
1014 	return 0;
1015 }
1016