C++ BTextView::MakeResizable方法代码示例

static filter_result
TextViewFilter(BMessage* message, BHandler**, BMessageFilter* filter)
{
	uchar key;
	if (message->FindInt8("byte", (int8*)&key) != B_OK)
		return B_DISPATCH_MESSAGE;

	ThrowOnAssert(filter != NULL);

	BContainerWindow* window = dynamic_cast<BContainerWindow*>(
		filter->Looper());
	ThrowOnAssert(window != NULL);

	BPoseView* poseView = window->PoseView();
	ThrowOnAssert(poseView != NULL);

	if (key == B_RETURN || key == B_ESCAPE) {
		poseView->CommitActivePose(key == B_RETURN);
		return B_SKIP_MESSAGE;
	}

	if (key == B_TAB) {
		if (poseView->ActivePose()) {
			if (message->FindInt32("modifiers") & B_SHIFT_KEY)
				poseView->ActivePose()->EditPreviousWidget(poseView);
			else
				poseView->ActivePose()->EditNextWidget(poseView);
		}

		return B_SKIP_MESSAGE;
	}

	// the BTextView doesn't respect window borders when resizing itself;
	// we try to work-around this "bug" here.

	// find the text editing view
	BView* scrollView = poseView->FindView("BorderView");
	if (scrollView != NULL) {
		BTextView* textView = dynamic_cast<BTextView*>(
			scrollView->FindView("WidgetTextView"));
		if (textView != NULL) {
			BRect rect = scrollView->Frame();

			if (rect.right + 3 > poseView->Bounds().right
				|| rect.left - 3 < 0)
				textView->MakeResizable(true, NULL);
		}
	}

	return B_DISPATCH_MESSAGE;
}

SGIView::SGIView(const char* name, uint32 flags, TranslatorSettings* settings)
	:
	BView(name, flags, new BGroupLayout(B_VERTICAL)),
	fSettings(settings)
{
	BPopUpMenu* menu = new BPopUpMenu("pick compression");

	uint32 currentCompression = 
		fSettings->SetGetInt32(SGI_SETTING_COMPRESSION);
	// create the menu items with the various compression methods
	add_menu_item(menu, SGI_COMP_NONE, B_TRANSLATE("None"), 
		currentCompression);
	//menu->AddSeparatorItem();
	add_menu_item(menu, SGI_COMP_RLE, B_TRANSLATE("RLE"), currentCompression);

	// DON'T turn this on, it's so slow that I didn't wait long enough
	// the one time I tested this. So I don't know if the code even works.
	// Supposedly, this would look for an already written scanline, and
	// modify the scanline tables so that the current row is not written
	// at all...

	//add_menu_item(menu, SGI_COMP_ARLE, "Agressive RLE", currentCompression);

	fCompressionMF = new BMenuField("compression", 
		B_TRANSLATE("Use compression:"), menu);

	BAlignment labelAlignment(B_ALIGN_LEFT, B_ALIGN_NO_VERTICAL);

	BStringView* titleView = new BStringView("title", 
		B_TRANSLATE("SGI image translator"));
	titleView->SetFont(be_bold_font);
	titleView->SetExplicitAlignment(labelAlignment);

	char detail[100];
	sprintf(detail, B_TRANSLATE("Version %d.%d.%d %s"),
		static_cast<int>(B_TRANSLATION_MAJOR_VERSION(SGI_TRANSLATOR_VERSION)),
		static_cast<int>(B_TRANSLATION_MINOR_VERSION(SGI_TRANSLATOR_VERSION)),
		static_cast<int>(B_TRANSLATION_REVISION_VERSION(
			SGI_TRANSLATOR_VERSION)), __DATE__);
	BStringView* detailView = new BStringView("details", detail);
	detailView->SetExplicitAlignment(labelAlignment);

	BTextView* infoView = new BTextView("info");
	infoView->SetText(BString(B_TRANSLATE("written by:\n"))
			.Append(author)
			.Append(B_TRANSLATE("\n\nbased on GIMP SGI plugin v1.5:\n"))
			.Append(kSGICopyright).String());
	infoView->SetExplicitAlignment(labelAlignment);
	infoView->SetWordWrap(false);
	infoView->MakeEditable(false);
	infoView->MakeResizable(true);
	infoView->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));

	float padding = 5.0f;
	BLayoutBuilder::Group<>(this, B_VERTICAL, padding)
		.SetInsets(padding)
		.Add(titleView)
		.Add(detailView)
		.AddGroup(B_HORIZONTAL)
			.Add(fCompressionMF)
			.AddGlue()
			.End()
		.Add(infoView)
		.AddGlue();

	BFont font;
	GetFont(&font);
	SetExplicitPreferredSize(BSize((font.Size() * 390) / 12,
		(font.Size() * 180) / 12));

	// TODO: remove this workaround for ticket #4217
	infoView->SetExplicitPreferredSize(
		BSize(infoView->LineWidth(4), infoView->TextHeight(0, 80)));
	infoView->SetExplicitMaxSize(infoView->ExplicitPreferredSize());
	infoView->SetExplicitMinSize(infoView->ExplicitPreferredSize());
}

void
BTextWidget::StartEdit(BRect bounds, BPoseView *view, BPose *pose)
{
	if (!IsEditable())
		return;

	// don't allow editing of the trash directory name
	if (pose->TargetModel()->IsTrash())
		return;

	// don't allow editing of the "Disks" icon name
	if (pose->TargetModel()->IsRoot())
		return;

	BEntry entry(pose->TargetModel()->EntryRef());
	if (entry.InitCheck() == B_OK 
		&& !ConfirmChangeIfWellKnownDirectory(&entry, "rename"))
		return;

	// get bounds with full text length
	BRect rect(bounds);
	BRect textRect(bounds);
	rect.OffsetBy(-2, -1);
	rect.right += 1;

	BFont font;
	view->GetFont(&font);
	BTextView *textView = new BTextView(rect, "WidgetTextView", textRect, &font, 0,
		B_FOLLOW_ALL, B_WILL_DRAW);

	textView->SetWordWrap(false);
	DisallowMetaKeys(textView);
	fText->SetUpEditing(textView);

	textView->AddFilter(new BMessageFilter(B_KEY_DOWN, TextViewFilter));

	rect.right = rect.left + textView->LineWidth() + 3;
	// center new width, if necessary
	if (view->ViewMode() == kIconMode
		|| (view->ViewMode() == kListMode && fAlignment == B_ALIGN_CENTER)) {
		rect.OffsetBy(bounds.Width() / 2 - rect.Width() / 2, 0);
	}

	rect.bottom = rect.top + textView->LineHeight() + 1;
	textRect = rect.OffsetToCopy(2, 1);
	textRect.right -= 3;
	textRect.bottom--;
	textView->SetTextRect(textRect);

	textRect = view->Bounds();
	bool hitBorder = false;
	if (rect.left < 1)
		rect.left = 1, hitBorder = true;
	if (rect.right > textRect.right)
		rect.right = textRect.right - 2, hitBorder = true;

	textView->MoveTo(rect.LeftTop());
	textView->ResizeTo(rect.Width(), rect.Height());

	BScrollView *scrollView = new BScrollView("BorderView", textView, 0, 0, false,
		false, B_PLAIN_BORDER);
	view->AddChild(scrollView);

	// configure text view
	switch (view->ViewMode()) {
		case kIconMode:
			textView->SetAlignment(B_ALIGN_CENTER);
			break;

		case kMiniIconMode:
			textView->SetAlignment(B_ALIGN_LEFT);
			break;

		case kListMode:
			textView->SetAlignment(fAlignment);
			break;
	}
	textView->MakeResizable(true, hitBorder ? NULL : scrollView);

	view->SetActivePose(pose);		// tell view about pose
	SetActive(true);				// for widget

	textView->SelectAll();
	textView->MakeFocus();

	// make this text widget invisible while we edit it
	SetVisible(false);

	ASSERT(view->Window());	// how can I not have a Window here???

	if (view->Window())
		// force immediate redraw so TextView appears instantly
		view->Window()->UpdateIfNeeded();
}

status_t
PTextView::SetProperty(const char *name, PValue *value, const int32 &index)
{
	if (!name || !value)
		return B_ERROR;
	
	BString str(name);
	PProperty *prop = FindProperty(name,index);
	if (!prop)
		return B_NAME_NOT_FOUND;
	
	if (FlagsForProperty(prop) & PROPERTY_READ_ONLY)
		return B_READ_ONLY;
	
	BTextView *backend = (BTextView*)fView;
	
	BoolValue boolval;
	CharValue charval;
	ColorValue colorval;
	FloatValue floatval;
	IntValue intval;
	PointValue pointval;
	RectValue rectval;
	StringValue stringval;
	
	status_t status = prop->SetValue(value);
	if (status != B_OK)
		return status;

	if (backend->Window())
		backend->Window()->Lock();

	else if (str.ICompare("Selectable") == 0)
	{
		prop->GetValue(&boolval);
		backend->MakeSelectable(*boolval.value);
	}
	else if (str.ICompare("CurrentLine") == 0)
	{
		prop->GetValue(&intval);
		backend->GoToLine(*intval.value);
	}
	else if (str.ICompare("TabWidth") == 0)
	{
		prop->GetValue(&floatval);
		backend->SetTabWidth(*floatval.value);
	}
	else if (str.ICompare("TextRect") == 0)
	{
		prop->GetValue(&rectval);
		backend->SetTextRect(*rectval.value);
	}
	else if (str.ICompare("MaxBytes") == 0)
	{
		prop->GetValue(&intval);
		backend->SetMaxBytes(*intval.value);
	}
	else if (str.ICompare("UseWordWrap") == 0)
	{
		prop->GetValue(&boolval);
		backend->SetWordWrap(*boolval.value);
	}
	else if (str.ICompare("HideTyping") == 0)
	{
		prop->GetValue(&boolval);
		backend->HideTyping(*boolval.value);
	}
	else if (str.ICompare("Editable") == 0)
	{
		prop->GetValue(&boolval);
		backend->MakeEditable(*boolval.value);
	}
	else if (str.ICompare("ColorSpace") == 0)
	{
		prop->GetValue(&intval);
		backend->SetColorSpace((color_space)*intval.value);
	}
	else if (str.ICompare("Text") == 0)
	{
		prop->GetValue(&stringval);
		backend->SetText(*stringval.value);
	}
	else if (str.ICompare("Resizable") == 0)
	{
		prop->GetValue(&boolval);
		backend->MakeResizable(*boolval.value);
	}
	else if (str.ICompare("Alignment") == 0)
	{
		prop->GetValue(&intval);
		backend->SetAlignment((alignment)*intval.value);
	}
	else if (str.ICompare("Undoable") == 0)
	{
		prop->GetValue(&boolval);
		backend->SetDoesUndo(*boolval.value);
	}
	else if (str.ICompare("AutoIndent") == 0)
	{
		prop->GetValue(&boolval);
//.........这里部分代码省略.........

void
BTextWidget::StartEdit(BRect bounds, BPoseView* view, BPose* pose)
{
	view->SetTextWidgetToCheck(NULL, this);
	if (!IsEditable() || IsActive())
		return;

	BEntry entry(pose->TargetModel()->EntryRef());
	if (entry.InitCheck() == B_OK
		&& !ConfirmChangeIfWellKnownDirectory(&entry,
			B_TRANSLATE_COMMENT("rename",
				"As in 'if you rename this folder...' (en) "
				"'Wird dieser Ordner umbenannt...' (de)"),
			B_TRANSLATE_COMMENT("rename",
				"As in 'to rename this folder...' (en) "
				"'Um diesen Ordner umzubenennen...' (de)"),
			B_TRANSLATE_COMMENT("Rename",
				"Button label, 'Rename' (en), 'Umbenennen' (de)")))
		return;

	// get bounds with full text length
	BRect rect(bounds);
	BRect textRect(bounds);
	rect.OffsetBy(-2, -1);
	rect.right += 1;

	BFont font;
	view->GetFont(&font);
	BTextView* textView = new BTextView(rect, "WidgetTextView", textRect,
		&font, 0, B_FOLLOW_ALL, B_WILL_DRAW);

	textView->SetWordWrap(false);
	DisallowMetaKeys(textView);
	fText->SetUpEditing(textView);

	textView->AddFilter(new BMessageFilter(B_KEY_DOWN, TextViewFilter));

	rect.right = rect.left + textView->LineWidth() + 3;
	// center new width, if necessary
	if (view->ViewMode() == kIconMode
		|| (view->ViewMode() == kListMode && fAlignment == B_ALIGN_CENTER)) {
		rect.OffsetBy(bounds.Width() / 2 - rect.Width() / 2, 0);
	}

	rect.bottom = rect.top + textView->LineHeight() + 1;
	textRect = rect.OffsetToCopy(2, 1);
	textRect.right -= 3;
	textRect.bottom--;
	textView->SetTextRect(textRect);

	BPoint origin = view->LeftTop();
	textRect = view->Bounds();

	bool hitBorder = false;
	if (rect.left <= origin.x)
		rect.left = origin.x + 1, hitBorder = true;
	if (rect.right >= textRect.right)
		rect.right = textRect.right - 1, hitBorder = true;

	textView->MoveTo(rect.LeftTop());
	textView->ResizeTo(rect.Width(), rect.Height());

	BScrollView* scrollView = new BScrollView("BorderView", textView, 0, 0,
		false, false, B_PLAIN_BORDER);
	view->AddChild(scrollView);

	// configure text view
	switch (view->ViewMode()) {
		case kIconMode:
			textView->SetAlignment(B_ALIGN_CENTER);
			break;

		case kMiniIconMode:
			textView->SetAlignment(B_ALIGN_LEFT);
			break;

		case kListMode:
			textView->SetAlignment(fAlignment);
			break;
	}
	textView->MakeResizable(true, hitBorder ? NULL : scrollView);

	view->SetActivePose(pose);
		// tell view about pose
	SetActive(true);
		// for widget

	textView->SelectAll();
	textView->MakeFocus();

	// make this text widget invisible while we edit it
	SetVisible(false);

	ASSERT(view->Window() != NULL);
		// how can I not have a Window here???

	if (view->Window()) {
		// force immediate redraw so TextView appears instantly
		view->Window()->UpdateIfNeeded();
	}
//.........这里部分代码省略.........