C++ BMenuField::StringWidth方法代码示例

void
HWindow::_InitGUI()
{
	fEventList = new HEventList();
	fEventList->SetType(BMediaFiles::B_SOUNDS);
	fEventList->SetSelectionMode(B_SINGLE_SELECTION_LIST);

	BMenu* menu = new BMenu("file");
	menu->SetRadioMode(true);
	menu->SetLabelFromMarked(true);
	menu->AddSeparatorItem();
	menu->AddItem(new BMenuItem(B_TRANSLATE("<none>"),
		new BMessage(M_NONE_MESSAGE)));
	menu->AddItem(new BMenuItem(B_TRANSLATE("Other" B_UTF8_ELLIPSIS),
		new BMessage(M_OTHER_MESSAGE)));

	BString label(B_TRANSLATE("Sound file:"));
	BMenuField* menuField = new BMenuField("filemenu", label, menu);
	menuField->SetDivider(menuField->StringWidth(label) + 10);

	BSize buttonsSize(be_plain_font->Size() * 2.5, be_plain_font->Size() * 2.5);

	BButton* stopbutton = new BButton("stop", "\xE2\x96\xA0",
		new BMessage(M_STOP_MESSAGE));
	stopbutton->SetEnabled(false);
	stopbutton->SetExplicitSize(buttonsSize);

	// We need at least one view to trigger B_PULSE_NEEDED events which we will
	// intercept in DispatchMessage to trigger the buttons enabling or disabling.
	stopbutton->SetFlags(stopbutton->Flags() | B_PULSE_NEEDED);

	BButton* playbutton = new BButton("play", "\xE2\x96\xB6",
		new BMessage(M_PLAY_MESSAGE));
	playbutton->SetEnabled(false);
	playbutton->SetExplicitSize(buttonsSize);

	BLayoutBuilder::Group<>(this, B_VERTICAL)
		.SetInsets(B_USE_WINDOW_SPACING)
		.Add(fEventList)
		.AddGroup(B_HORIZONTAL)
			.Add(menuField)
			.AddGroup(B_HORIZONTAL, 0)
				.Add(playbutton)
				.Add(stopbutton)
			.End()
		.End();

	// setup file menu
	_SetupMenuField();
	BMenuItem* noneItem = menu->FindItem(B_TRANSLATE("<none>"));
	if (noneItem != NULL)
		noneItem->SetMarked(true);

	_UpdateZoomLimits();
}

FindWindow::FindWindow(BRect _rect, BMessage& previous, BMessenger& target,
		const BMessage* settings)
	: BWindow(_rect, B_TRANSLATE("Find"), B_TITLED_WINDOW,
		B_ASYNCHRONOUS_CONTROLS | B_CLOSE_ON_ESCAPE),
	fTarget(target)
{
	BView* view = new BView(Bounds(), "main", B_FOLLOW_ALL, 0);
	view->SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
	AddChild(view);

	int8 mode = kAsciiMode;
	if (previous.FindInt8("find_mode", &mode) != B_OK && settings != NULL)
		settings->FindInt8("find_mode", &mode);

	// add the top widgets

	fMenu = new BPopUpMenu("mode");
	BMessage* message;
	BMenuItem* item;
	fMenu->AddItem(item = new BMenuItem(B_TRANSLATE("Text"),
		message = new BMessage(kMsgFindMode)));
	message->AddInt8("mode", kAsciiMode);
	if (mode == kAsciiMode)
		item->SetMarked(true);
	fMenu->AddItem(item = new BMenuItem(B_TRANSLATE_COMMENT("Hexadecimal", 
		"A menu item, as short as possible, noun is recommended if it is "
		"shorter than adjective."), message = new BMessage(kMsgFindMode)));
	message->AddInt8("mode", kHexMode);
	if (mode == kHexMode)
		item->SetMarked(true);

	BRect rect = Bounds().InsetByCopy(5, 5);
	BMenuField* menuField = new BMenuField(rect, B_EMPTY_STRING,
		B_TRANSLATE("Mode:"), fMenu, B_FOLLOW_LEFT | B_FOLLOW_TOP);
	menuField->SetDivider(menuField->StringWidth(menuField->Label()) + 8);
	menuField->ResizeToPreferred();
	view->AddChild(menuField);

	// add the bottom widgets

	BButton* button = new BButton(rect, B_EMPTY_STRING, B_TRANSLATE("Find"),
		new BMessage(kMsgStartFind), B_FOLLOW_RIGHT | B_FOLLOW_BOTTOM);
	button->MakeDefault(true);
	button->ResizeToPreferred();
	button->MoveTo(rect.right - button->Bounds().Width(),
		rect.bottom - button->Bounds().Height());
	view->AddChild(button);

	fCaseCheckBox = new BCheckBox(rect, B_EMPTY_STRING, B_TRANSLATE("Case sensitive"),
		NULL, B_FOLLOW_LEFT | B_FOLLOW_BOTTOM);
	fCaseCheckBox->ResizeToPreferred();
	fCaseCheckBox->MoveTo(5, button->Frame().top);
	bool caseSensitive;
	if (previous.FindBool("case_sensitive", &caseSensitive) != B_OK) {
		if (settings == NULL
			|| settings->FindBool("case_sensitive", &caseSensitive) != B_OK)
			caseSensitive = true;
	}
	fCaseCheckBox->SetValue(caseSensitive);
	view->AddChild(fCaseCheckBox);

	// and now those inbetween

	rect.top = menuField->Frame().bottom + 5;
	rect.bottom = fCaseCheckBox->Frame().top - 8;
	rect.InsetBy(2, 2);
	fTextView = new FindTextView(rect, B_EMPTY_STRING,
		rect.OffsetToCopy(B_ORIGIN).InsetByCopy(3, 3), B_FOLLOW_ALL);
	fTextView->SetWordWrap(true);
	fTextView->SetMode((find_mode)mode);
	fTextView->SetData(previous);

	BScrollView* scrollView = new BScrollView("scroller", fTextView,
		B_FOLLOW_ALL, B_WILL_DRAW, false, false);
	view->AddChild(scrollView);

	ResizeTo(290, button->Frame().Height() * 3 + 30);

	SetSizeLimits(fCaseCheckBox->Bounds().Width() + button->Bounds().Width()
			+ 20, 32768, button->Frame().Height() * 3 + 10, 32768);
}

void
DocInfoWindow::_SetupDocInfoView(BBox* panel)
{
	BRect bounds(panel->Bounds());
#if HAVE_FULLVERSION_PDF_LIB
	bounds.InsetBy(10.0, 10.0);
#endif

	// add list of keys
	fKeyList = new BMenu("Delete Key");
	BMenuField *menu = new BMenuField(bounds, "delete", "", fKeyList,
		B_FOLLOW_BOTTOM);
	panel->AddChild(menu);
	menu->SetDivider(0);

#ifdef __HAIKU__
	menu->ResizeToPreferred();
	menu->MoveTo(bounds.left, bounds.bottom - menu->Bounds().Height());
#else
	menu->ResizeTo(menu->StringWidth("Delete Key") + 15.0, 25.0);
	menu->MoveTo(bounds.left, bounds.bottom - 25.0);
#endif

	const char* title[6] = { "Title", "Author", "Subject", "Keywords", "Creator",
		NULL };	// PDFlib sets these: "Producer", "CreationDate", not "ModDate"
	BMenu* defaultKeys = new BMenu("Default Keys");
	for (int32 i = 0; title[i] != NULL; ++i)
		defaultKeys->AddItem(new BMenuItem(title[i], new BMessage(DEFAULT_KEY_MSG)));

	BRect frame(menu->Frame());
	menu = new BMenuField(frame, "add", "", defaultKeys, B_FOLLOW_BOTTOM);
	panel->AddChild(menu);
	menu->SetDivider(0);

#ifdef __HAIKU__
	menu->ResizeToPreferred();
	menu->MoveBy(frame.Width() + 10.0, 0.0);
#else
	menu->ResizeTo(menu->StringWidth("Default Keys") + 15.0, 25.0);
	menu->MoveBy(menu->Bounds().Width() + 10.0, 0.0);
#endif

	frame = menu->Frame();
	frame.left = frame.right + 10.0;
	frame.right = bounds.right;
	BTextControl *add = new BTextControl(frame, "add", "Add Key:", "",
		new BMessage(ADD_KEY_MSG), B_FOLLOW_LEFT_RIGHT | B_FOLLOW_BOTTOM);
	panel->AddChild(add);

	float width, height;
	add->GetPreferredSize(&width, &height);
	add->ResizeTo(bounds.right - frame.left, height);
	add->SetDivider(be_plain_font->StringWidth("Add Key: "));

	bounds.bottom = frame.top - 10.0;
	bounds.right -= B_V_SCROLL_BAR_WIDTH;
	bounds.InsetBy(2.0, 2.0);
	fTable = new BView(bounds, "table", B_FOLLOW_ALL, B_WILL_DRAW);
	fTable->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));

	fTableScrollView = new BScrollView("scroll_table", fTable, B_FOLLOW_ALL, 0,
		false, true);
	panel->AddChild(fTableScrollView);

	BMessage docInfo;
	fDocInfo->FindMessage("doc_info", &docInfo);

	// fill table
	_BuildTable(docInfo);
}

void
HWindow::InitGUI()
{
	fEventList = new HEventList();
	fEventList->SetType(BMediaFiles::B_SOUNDS);
	fEventList->SetSelectionMode(B_SINGLE_SELECTION_LIST);

	BGroupView* view = new BGroupView();
	BBox* box = new BBox("", B_WILL_DRAW | B_FRAME_EVENTS
		| B_NAVIGABLE_JUMP | B_PULSE_NEEDED);

	BMenu* menu = new BMenu("file");
	menu->SetRadioMode(true);
	menu->SetLabelFromMarked(true);
	menu->AddSeparatorItem();
	menu->AddItem(new BMenuItem(B_TRANSLATE("<none>"),
		new BMessage(M_NONE_MESSAGE)));
	menu->AddItem(new BMenuItem(B_TRANSLATE("Other" B_UTF8_ELLIPSIS),
		new BMessage(M_OTHER_MESSAGE)));

	BString label(B_TRANSLATE("Sound file:"));
	BMenuField* menuField = new BMenuField("filemenu", label, menu);
	menuField->SetDivider(menuField->StringWidth(label) + 10);

	BButton* stopbutton = new BButton("stop", B_TRANSLATE("Stop"),
		new BMessage(M_STOP_MESSAGE));
	stopbutton->SetEnabled(false);

	BButton* playbutton = new BButton("play", B_TRANSLATE("Play"),
		new BMessage(M_PLAY_MESSAGE));
	playbutton->SetEnabled(false);

	const float kInset = be_control_look->DefaultItemSpacing();
	view->SetLayout(new BGroupLayout(B_HORIZONTAL));
	view->AddChild(BGroupLayoutBuilder(B_VERTICAL, kInset)
		.AddGroup(B_HORIZONTAL)
			.Add(menuField)
			.AddGlue()
		.End()
		.AddGroup(B_HORIZONTAL, kInset)
			.AddGlue()
			.Add(playbutton)
			.Add(stopbutton)
		.End()
		.SetInsets(kInset, kInset, kInset, kInset)
	);

	box->AddChild(view);

	SetLayout(new BGroupLayout(B_HORIZONTAL));
	AddChild(BGroupLayoutBuilder(B_VERTICAL)
		.AddGroup(B_VERTICAL, kInset)
			.Add(fEventList)
			.Add(box)
		.End()
		.SetInsets(kInset, kInset, kInset, kInset)
	);

	// setup file menu
	SetupMenuField();
	BMenuItem* noneItem = menu->FindItem(B_TRANSLATE("<none>"));
	if (noneItem != NULL)
		noneItem->SetMarked(true);
}

THeaderView::THeaderView(BRect rect, BRect windowRect, bool incoming,
	bool resending, uint32 defaultCharacterSet, int32 defaultAccount)
	:
	BBox(rect, "m_header", B_FOLLOW_LEFT_RIGHT, B_WILL_DRAW, B_NO_BORDER),

	fAccountMenu(NULL),
	fEncodingMenu(NULL),
	fAccountID(defaultAccount),
	fAccountTo(NULL),
	fAccount(NULL),
	fBcc(NULL),
	fCc(NULL),
	fSubject(NULL),
	fTo(NULL),
	fDateLabel(NULL),
	fDate(NULL),
	fIncoming(incoming),
	fCharacterSetUserSees(defaultCharacterSet),
	fResending(resending),
	fBccMenu(NULL),
	fCcMenu(NULL),
	fToMenu(NULL),
	fEmailList(NULL)
{
	BMenuField* field;
	BMessage* msg;

	float x = StringWidth( /* The longest title string in the header area */
		B_TRANSLATE("Attachments: ")) + 9;
	float y = TO_FIELD_V;

	BMenuBar* dummy = new BMenuBar(BRect(0, 0, 100, 15), "Dummy");
	AddChild(dummy);
	float width, menuBarHeight;
	dummy->GetPreferredSize(&width, &menuBarHeight);
	dummy->RemoveSelf();
	delete dummy;

	float menuFieldHeight = menuBarHeight + 6;
	float controlHeight = menuBarHeight + floorf(be_plain_font->Size() / 1.15);

	if (!fIncoming) {
		InitEmailCompletion();
		InitGroupCompletion();
	}

	// Prepare the character set selection pop-up menu (we tell the user that
	// it is the Encoding menu, even though it is really the character set).
	// It may appear in the first line, to the right of the From box if the
	// user is reading an e-mail.  It appears on the second line, to the right
	// of the e-mail account menu, if the user is composing a message.  It lets
	// the user quickly select a character set different from the application
	// wide default one, and also shows them which character set is active.  If
	// you are reading a message, you also see an item that says "Automatic"
	// for automatic decoding character set choice.  It can slide around as the
	// window is resized when viewing a message, but not when composing
	// (because the adjacent pop-up menu can't resize dynamically due to a BeOS
	// bug).

	float widestCharacterSet = 0;
	bool markedCharSet = false;
	BMenuItem* item;

	fEncodingMenu = new BPopUpMenu(B_EMPTY_STRING);

	BCharacterSetRoster roster;
	BCharacterSet charset;
	while (roster.GetNextCharacterSet(&charset) == B_OK) {
		BString name(charset.GetPrintName());
		const char* mime = charset.GetMIMEName();
		if (mime)
			name << " (" << mime << ")";

		uint32 convertID;
		if (mime == NULL || strcasecmp(mime, "UTF-8") != 0)
			convertID = charset.GetConversionID();
		else
			convertID = B_MAIL_UTF8_CONVERSION;

		msg = new BMessage(kMsgEncoding);
		msg->AddInt32("charset", convertID);
		fEncodingMenu->AddItem(item = new BMenuItem(name.String(), msg));
		if (convertID == fCharacterSetUserSees && !markedCharSet) {
			item->SetMarked(true);
			markedCharSet = true;
		}
		if (StringWidth(name.String()) > widestCharacterSet)
			widestCharacterSet = StringWidth(name.String());
	}

	msg = new BMessage(kMsgEncoding);
	msg->AddInt32("charset", B_MAIL_US_ASCII_CONVERSION);
	fEncodingMenu->AddItem(item = new BMenuItem("US-ASCII", msg));
	if (fCharacterSetUserSees == B_MAIL_US_ASCII_CONVERSION && !markedCharSet) {
		item->SetMarked(true);
		markedCharSet = true;
	}

	if (!resending && fIncoming) {
		// reading a message, display the Automatic item
//.........这里部分代码省略.........