C++ BTranslatorRoster::MakeConfigurationView方法代码示例

status_t
DataTranslationsWindow::_ShowConfigView(int32 id)
{
	// Shows the config panel for the translator with the given id

	if (id < 0)
		return B_BAD_VALUE;

	BTranslatorRoster* roster = BTranslatorRoster::Default();

	if (fConfigView) {
		fRightBox->RemoveChild(fConfigView);
		delete fConfigView;
		fConfigView = NULL;
	}

	BMessage emptyMsg;
	BRect rect(0, 0, 200, 233);
	status_t ret = roster->MakeConfigurationView(id, &emptyMsg,
		&fConfigView, &rect);

	if (ret != B_OK)
		return ret;

	fConfigView->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
		// force config views to all have the same color
	fRightBox->AddChild(fConfigView);

	return B_OK;
}

status_t
DataTranslationsWindow::_ShowConfigView(int32 id)
{
	// Shows the config panel for the translator with the given id

	if (id < 0)
		return B_BAD_VALUE;

	BTranslatorRoster *roster = BTranslatorRoster::Default();

	// fConfigView is NULL the first time this function
	// is called, prevent a segment fault
	if (fConfigView)
		fRightBox->RemoveChild(fConfigView);

	BMessage emptyMsg;
	BRect rect(0, 0, 200, 233);
	status_t ret = roster->MakeConfigurationView(id, &emptyMsg, &fConfigView, &rect);
	if (ret != B_OK) {
		fRightBox->RemoveChild(fConfigView);
		return ret;
	}

	BRect configRect(fRightBox->Bounds());
	configRect.InsetBy(3, 3);
	configRect.bottom -= 45;
	float width = 0, height = 0;
	if ((fConfigView->Flags() & B_SUPPORTS_LAYOUT) != 0) {
		BSize configSize = fConfigView->ExplicitPreferredSize();
		width = configSize.Width();
		height = configSize.Height();
	} else {
		fConfigView->GetPreferredSize(&width, &height);
	}
	float widen = max_c(0, width - configRect.Width());
	float heighten = max_c(0, height - configRect.Height());
	if (widen > 0 || heighten > 0) {
		ResizeBy(widen, heighten);
		configRect.right += widen;
		configRect.bottom += heighten;
	}
	fConfigView->MoveTo(configRect.left, configRect.top);
	fConfigView->ResizeTo(configRect.Width(), configRect.Height());
	fConfigView->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
		// force config views to all have the same color
	fRightBox->AddChild(fConfigView);

	return B_OK;
}

status_t
DataTranslationsWindow::_ShowConfigView(int32 id)
{
	// Shows the config panel for the translator with the given id

	if (id < 0)
		return B_BAD_VALUE;

	BTranslatorRoster* roster = BTranslatorRoster::Default();

	if (fConfigView != NULL) {
		fRightBox->RemoveChild(fConfigView);
		delete fConfigView;
		fConfigView = NULL;
		fInfoText = NULL;
		if (fRelease != NULL) {
			fRelease->Release();
			fRelease = NULL;
		}
	}

	BMessage emptyMessage;
	BRect rect(0.0f, 0.0f, 200.0f, 233.0f);
	status_t result = roster->MakeConfigurationView(id, &emptyMessage,
		&fConfigView, &rect);

	if (result != B_OK)
		return result;

	fConfigView->SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
		// force config views to all have the same color
	fRightBox->AddChild(fConfigView);

	// for default 12pt font size: 597 ≈ (0.85 * 12 * 49)
	fConfigView->SetExplicitMinSize(
		BSize(ceilf(be_control_look->DefaultItemSpacing() * 49)
			- fTranslatorListView->Frame().Width(), B_SIZE_UNSET));

	// Make sure the translator's image doesn't get unloaded while we are still
	// showing a config view whose code is in the image
	fRelease = roster->AcquireTranslator(id);

	return B_OK;
}

void
ScreenshotWindow::_ShowSettings(bool activate)
{
	if (!fSettingsWindow && !activate)
		return;

	// Find a translator
	translator_id translator = 0;
	BTranslatorRoster *roster = BTranslatorRoster::Default();
	translator_id* translators = NULL;
	int32 numTranslators = 0;
	if (roster->GetAllTranslators(&translators, &numTranslators) != B_OK)
		return;
	bool foundTranslator = false;
	for (int32 x = 0; x < numTranslators; x++) {
		const translation_format* formats = NULL;
		int32 numFormats;
		if (roster->GetOutputFormats(translators[x], &formats,
			&numFormats) == B_OK) {
			for (int32 i = 0; i < numFormats; ++i) {
				if (formats[i].type == static_cast<uint32>(fImageFileType)) {
					translator = translators[x];
					foundTranslator = true;
					break;
				}
			}
		}
		if (foundTranslator)
			break;
	}
	delete [] translators;
	if (!foundTranslator)
		return;

	// Create a window with a configuration view
	BView *view;
	BRect rect(0, 0, 239, 239);

	status_t err = roster->MakeConfigurationView(translator, NULL, &view,
		&rect);
	if (err < B_OK || view == NULL) {
		BAlert *alert = new BAlert(NULL, strerror(err), "OK");
		alert->Go();
	} else {
		if (fSettingsWindow) {
			fSettingsWindow->RemoveChild(fSettingsWindow->ChildAt(0));
			float width, height;
			view->GetPreferredSize(&width, &height);
			fSettingsWindow->ResizeTo(width, height);
			fSettingsWindow->AddChild(view);
			if (activate)
				fSettingsWindow->Activate();
		} else {
			fSettingsWindow = new BWindow(rect,
				B_TRANSLATE("Translator Settings"),
				B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
				B_NOT_ZOOMABLE | B_NOT_RESIZABLE);
			fSettingsWindow->AddFilter(new QuitMessageFilter(this));
			fSettingsWindow->AddChild(view);
			fSettingsWindow->CenterOnScreen();
			fSettingsWindow->Show();
		}
	}
}

// Private function to add the config view of the currently
// selected output format to our window
void
OutputFormatView::AddConfigView()
{
	the_window->Lock();
	// Remove the window size limits,
	// so we are free to do whatever we like
	the_window->SetSizeLimits(0.0, 32767.0, 0.0, 32767.0);
	// The current views must stay put while we resize
	// the window to make room for the config view
	MakeFollowBottom(false);

	// Remove the old config view if there is one
	if (config_view)
	{
		RemoveChild(config_view);
		delete config_view;
		config_view = 0;
	}

	BRect config_rect;
	if (the_roster->MakeConfigurationView(
	    	output_list[index].translator,
	    	0,
	    	&config_view,
	    	&config_rect) == B_NO_ERROR &&
	    config_view != 0)
	{
		// Create a caption for the config view
		// if there wasn't one already
		if (!config_caption)
		{
			config_caption = new CaptionView(
				BRect(8.0, info_view->Frame().bottom + 1.0, Bounds().right - 8.0, 0.0),
				"config caption",
				StringsRsrc[STR_TRANSLATOR_SETTINGS]);
			config_caption->SetResizingMode(B_FOLLOW_LEFT_RIGHT | B_FOLLOW_TOP);
			AddChild(config_caption);
		}

		// Move the config view to just below the config caption
		config_view->MoveBy(
			16.0 - config_view->Frame().left,
			config_caption->Frame().bottom + 1.0 - config_view->Frame().top);

		// Colour it gray
		config_view->SetViewColor(222, 222, 222);
		config_view->SetLowColor(222, 222, 222);

		// First resize the window so that the config view will fit,
		// otherwise the config view may want to change with us
		float width_diff = config_view->Frame().right + 16.0 - Bounds().Width();
		the_window->ResizeTo(
			Bounds().Width() + (width_diff > 0.0 ? width_diff : 0.0),
			config_view->Frame().bottom + 8.0);

		// Add it to the main view
		AddChild(config_view);

		// Make the config_view and its children follow the bottom of the window
		RecursiveSetMode(config_view);
	}
	else
	{
		// This translator doesn't have a config view
		if (config_caption)
		{
			RemoveChild(config_caption);
			delete config_caption;
			config_caption = 0;
		}
		the_window->ResizeTo(Bounds().right, info_view->Frame().bottom + 8.0);
	}

	// Make all views follow the bottom of the window again
	MakeFollowBottom();

	// Set the window's minimum size
	float min_width = (config_view ? config_view->Frame().right : 200.0);
	if (min_width < 200.0)
		min_width = 200.0;
	the_window->SetSizeLimits(
		min_width,
		32767.0,
		Bounds().Height() - scroll_view->Bounds().Height() + 50.0,
		32767.0);

	the_window->Unlock();
}