C++ (Cpp) ScreenSaverItem示例

示例#1

//! Sorting function for ScreenSaverItems
int
ModulesView::_CompareScreenSaverItems(const void* left, const void* right)
{
	ScreenSaverItem* leftItem  = *(ScreenSaverItem **)left;
	ScreenSaverItem* rightItem = *(ScreenSaverItem **)right;

	return strcasecmp(leftItem->Text(), rightItem->Text());
}

示例#2

void
ModulesView::PopulateScreenSaverList()
{
	// Blackness is a built-in screen saver
	ScreenSaverItem* defaultItem
		= new ScreenSaverItem(B_TRANSLATE("Blackness"), "");
	fScreenSaversListView->AddItem(defaultItem);

	// Iterate over add-on directories, and add their files to the list view

	directory_which which[] = {
		B_USER_NONPACKAGED_ADDONS_DIRECTORY,
		B_USER_ADDONS_DIRECTORY,
		B_SYSTEM_NONPACKAGED_ADDONS_DIRECTORY,
		B_SYSTEM_ADDONS_DIRECTORY,
	};
	ScreenSaverItem* selectedItem = NULL;

	for (uint32 i = 0; i < sizeof(which) / sizeof(which[0]); i++) {
		BPath basePath;
		if (find_directory(which[i], &basePath) != B_OK)
			continue;
		else if (basePath.Append("Screen Savers", true) != B_OK)
			continue;

		BDirectory dir(basePath.Path());
		BEntry entry;
		while (dir.GetNextEntry(&entry, true) == B_OK) {
			char name[B_FILE_NAME_LENGTH];
			if (entry.GetName(name) != B_OK)
				continue;

			BPath path(basePath);
			if (path.Append(name) != B_OK)
				continue;

			ScreenSaverItem* item = new ScreenSaverItem(name, path.Path());
			fScreenSaversListView->AddItem(item);

			if (selectedItem != NULL)
				continue;

			if (strcmp(fSettings.ModuleName(), item->Text()) == 0)
				selectedItem = item;
		}
	}

	fScreenSaversListView->SortItems(_CompareScreenSaverItems);
	if (selectedItem == NULL)
		selectedItem = defaultItem;

	fScreenSaversListView->Select(fScreenSaversListView->IndexOf(selectedItem));
	fScreenSaversListView->ScrollToSelection();
}

示例#3

void
ModulesView::PopulateScreenSaverList()
{
 	fScreenSaversListView->DeselectAll();
	while (ScreenSaverItem* item
			= (ScreenSaverItem*)fScreenSaversListView->RemoveItem((int32)0)) {
		delete item;
	}

	// Blackness is a built-in screen saver
	fScreenSaversListView->AddItem(
		new ScreenSaverItem(B_TRANSLATE("Blackness"), ""));

	// Iterate over add-on directories, and add their files to the list view

	directory_which which[] = {
		B_USER_ADDONS_DIRECTORY,
		B_COMMON_ADDONS_DIRECTORY,
		B_SYSTEM_ADDONS_DIRECTORY,
	};
	ScreenSaverItem* selectItem = NULL;

	for (uint32 i = 0; i < sizeof(which) / sizeof(which[0]); i++) {
		BPath basePath;
		find_directory(which[i], &basePath);
		basePath.Append("Screen Savers", true);

		BDirectory dir(basePath.Path());
		BEntry entry;
		while (dir.GetNextEntry(&entry, true) == B_OK) {
			char name[B_FILE_NAME_LENGTH];
			if (entry.GetName(name) != B_OK)
				continue;

			BPath path = basePath;
			path.Append(name);

			ScreenSaverItem* item = new ScreenSaverItem(name, path.Path());
			fScreenSaversListView->AddItem(item);

			if (strcmp(fSettings.ModuleName(), item->Text()) != 0
				|| (strcmp(fSettings.ModuleName(), "") != 0
					&& strcmp(item->Text(), B_TRANSLATE("Blackness")) != 0)) {
				selectItem = item;
			}
		}
	}

	fScreenSaversListView->SortItems(_CompareScreenSaverItems);

	fScreenSaversListView->Select(fScreenSaversListView->IndexOf(selectItem));
	fScreenSaversListView->ScrollToSelection();
}

示例#4

void
ModulesView::MessageReceived(BMessage* message)
{
	switch (message->what) {
		case kMsgSaverSelected:
		{
			int selection = fScreenSaversListView->CurrentSelection();
			if (selection < 0)
				break;

			ScreenSaverItem* item
				= (ScreenSaverItem*)fScreenSaversListView->ItemAt(selection);
			if (item == NULL)
				break;

			if (strcmp(item->Text(), B_TRANSLATE("Blackness")) == 0)
				fSettings.SetModuleName("");
			else
				fSettings.SetModuleName(item->Text());

			SaveState();
			_CloseSaver();
			_OpenSaver();
			fSettings.Save();
			break;
		}

		case kMsgTestSaver:
		{
			SaveState();
			fSettings.Save();

			_CloseSaver();

			be_roster->StartWatching(BMessenger(this, Looper()),
				B_REQUEST_QUIT);
			if (be_roster->Launch(SCREEN_BLANKER_SIG, &fSettings.Message(),
					&fScreenSaverTestTeam) == B_OK) {
				break;
			}

			// Try really hard to launch it. It's very likely that this fails
			// when we run from the CD, and there is only an incomplete mime
			// database for example...
			BPath path;
			if (find_directory(B_SYSTEM_BIN_DIRECTORY, &path) != B_OK
				|| path.Append("screen_blanker") != B_OK) {
				path.SetTo("/bin/screen_blanker");
			}

			BEntry entry(path.Path());
			entry_ref ref;
			if (entry.GetRef(&ref) == B_OK) {
				be_roster->Launch(&ref, &fSettings.Message(),
					&fScreenSaverTestTeam);
			}
			break;
		}

		case kMsgAddSaver:
			fFilePanel->Show();
			break;

		case B_SOME_APP_QUIT:
		{
			team_id team;
			if (message->FindInt32("be:team", &team) == B_OK
				&& team == fScreenSaverTestTeam) {
				be_roster->StopWatching(this);
				_OpenSaver();
			}
			break;
		}

		default:
			BView::MessageReceived(message);
	}
}