C++ LLMultiSliderCtrl::updateText方法代码示例

// static
void LLMultiSliderCtrl::onSliderCommit(LLUICtrl* ctrl, const LLSD& userdata)
{
	LLMultiSliderCtrl* self = dynamic_cast<LLMultiSliderCtrl*>(ctrl->getParent());
	if (!self)
		return;
	
	BOOL success = FALSE;
	F32 saved_val = self->mCurValue;
	F32 new_val = self->mMultiSlider->getCurSliderValue();

	self->mCurValue = new_val;  // set the value temporarily so that the callback can retrieve it.
	if( !self->mValidateSignal || (*(self->mValidateSignal))( self, new_val ) )
	{
		success = TRUE;
	}

	if( success )
	{
		self->onCommit();
	}
	else
	{
		if( self->mCurValue != saved_val )
		{
			self->setCurSliderValue( saved_val );
		}
		self->reportInvalidData();		
	}
	self->updateText();
}

// static
void LLMultiSliderCtrl::onEditorCommit( LLUICtrl* caller, void *userdata )
{
	LLMultiSliderCtrl* self = (LLMultiSliderCtrl*) userdata;
	llassert( caller == self->mEditor );

	BOOL success = FALSE;
	F32 val = self->mCurValue;
	F32 saved_val = self->mCurValue;

	std::string text = self->mEditor->getText();
	if( LLLineEditor::postvalidateFloat( text ) )
	{
		LLLocale locale(LLLocale::USER_LOCALE);
		val = (F32) atof( text.c_str() );
		if( self->mMultiSlider->getMinValue() <= val && val <= self->mMultiSlider->getMaxValue() )
		{
			if( self->mValidateCallback )
			{
				self->setCurSliderValue( val );  // set the value temporarily so that the callback can retrieve it.
				if( self->mValidateCallback( self, self->mCallbackUserData ) )
				{
					success = TRUE;
				}
			}
			else
			{
				self->setCurSliderValue( val );
				success = TRUE;
			}
		}
	}

	if( success )
	{
		self->onCommit();
	}
	else
	{
		if( self->getCurSliderValue() != saved_val )
		{
			self->setCurSliderValue( saved_val );
		}
		self->reportInvalidData();		
	}
	self->updateText();
}

// static
void LLMultiSliderCtrl::onEditorCommit( LLUICtrl* ctrl, const LLSD& userdata)
{
	llassert(ctrl);
	if (!ctrl)
		return;

	LLMultiSliderCtrl* self = dynamic_cast<LLMultiSliderCtrl*>(ctrl->getParent());
	llassert(self);
	if (!self) // cast failed - wrong type! :O
		return;
	
	BOOL success = FALSE;
	F32 val = self->mCurValue;
	F32 saved_val = self->mCurValue;

	std::string text = self->mEditor->getText();
	if( LLLineEditor::postvalidateFloat( text ) )
	{
		LLLocale locale(LLLocale::USER_LOCALE);
		val = (F32) atof( text.c_str() );
		if( self->mMultiSlider->getMinValue() <= val && val <= self->mMultiSlider->getMaxValue() )
		{
			self->setCurSliderValue( val );  // set the value temporarily so that the callback can retrieve it.
			if( !self->mValidateSignal || (*(self->mValidateSignal))( self, val ) )
			{
				success = TRUE;
			}
		}
	}

	if( success )
	{
		self->onCommit();
	}
	else
	{
		if( self->getCurSliderValue() != saved_val )
		{
			self->setCurSliderValue( saved_val );
		}
		self->reportInvalidData();		
	}
	self->updateText();
}

// static
void LLMultiSliderCtrl::onSliderCommit( LLUICtrl* caller, void *userdata )
{
	LLMultiSliderCtrl* self = (LLMultiSliderCtrl*) userdata;
	//llassert( caller == self->mSlider );

	BOOL success = FALSE;
	F32 saved_val = self->mCurValue;
	F32 new_val = self->mMultiSlider->getCurSliderValue();

	if( self->mValidateCallback )
	{
		self->mCurValue = new_val;  // set the value temporarily so that the callback can retrieve it.
		if( self->mValidateCallback( self, self->mCallbackUserData ) )
		{
			success = TRUE;
		}
	}
	else
	{
		self->mCurValue = new_val;
		success = TRUE;
	}

	if( success )
	{
		self->onCommit();
	}
	else
	{
		if( self->mCurValue != saved_val )
		{
			self->setCurSliderValue( saved_val );
		}
		self->reportInvalidData();		
	}
	self->updateText();
}

//.........这里部分代码省略.........

	LLRect rect;
	createRect(node, rect, parent, LLRect());

	LLFontGL* font = LLView::selectFont(node);

	// HACK: Font might not be specified.
	if (!font)
	{
		font = LLFontGL::getFontSansSerifSmall();
	}

	S32 label_width = 0;
	node->getAttributeS32("label_width", label_width);

	BOOL show_text = TRUE;
	node->getAttributeBOOL("show_text", show_text);

	BOOL can_edit_text = FALSE;
	node->getAttributeBOOL("can_edit_text", can_edit_text);
	
	BOOL allow_overlap = FALSE;
	node->getAttributeBOOL("allow_overlap", allow_overlap);

	BOOL draw_track = TRUE;
	node->getAttributeBOOL("draw_track", draw_track);

	BOOL use_triangle = FALSE;
	node->getAttributeBOOL("use_triangle", use_triangle);

	F32 initial_value = 0.f;
	node->getAttributeF32("initial_val", initial_value);

	F32 min_value = 0.f;
	node->getAttributeF32("min_val", min_value);

	F32 max_value = 1.f; 
	node->getAttributeF32("max_val", max_value);

	F32 increment = 0.1f;
	node->getAttributeF32("increment", increment);

	U32 precision = 3;
	node->getAttributeU32("decimal_digits", precision);

	S32 max_sliders = 1;
	node->getAttributeS32("max_sliders", max_sliders);


	S32 text_left = 0;
	if (show_text)
	{
		// calculate the size of the text box (log max_value is number of digits - 1 so plus 1)
		if ( max_value )
			text_left = font->getWidth(std::string("0")) * ( static_cast < S32 > ( log10  ( max_value ) ) + precision + 1 );

		if ( increment < 1.0f )
			text_left += font->getWidth(std::string("."));	// (mostly) take account of decimal point in value

		if ( min_value < 0.0f || max_value < 0.0f )
			text_left += font->getWidth(std::string("-"));	// (mostly) take account of minus sign 

		// padding to make things look nicer
		text_left += 8;
	}

	LLUICtrlCallback callback = NULL;

	if (label.empty())
	{
		label.assign(node->getTextContents());
	}

	LLMultiSliderCtrl* slider = new LLMultiSliderCtrl(name,
							rect,
							label,
							font,
							label_width,
							rect.getWidth() - text_left,
							show_text,
							can_edit_text,
							callback,
							NULL,
							initial_value,
							min_value, 
							max_value,
							increment,
							max_sliders,
							allow_overlap,
							draw_track,
							use_triangle);

	slider->setPrecision(precision);

	slider->initFromXML(node, parent);

	slider->updateText();
	
	return slider;
}