C++ ChoiceParamDescriptor::setLayoutHint方法代码示例

/**
 * @brief Function called to describe the plugin controls and features.
 * @param[in, out]   desc       Effect descriptor
 * @param[in]        context    Application context
 */
void HistogramKeyerPluginFactory::describeInContext( OFX::ImageEffectDescriptor& desc,OFX::EContext context )
{
	
	OFX::ClipDescriptor* srcClip = desc.defineClip( kOfxImageEffectSimpleSourceClipName );
	srcClip->addSupportedComponent( OFX::ePixelComponentRGBA );
	srcClip->addSupportedComponent( OFX::ePixelComponentRGB );
	srcClip->addSupportedComponent( OFX::ePixelComponentAlpha );
	srcClip->setSupportsTiles( kSupportTiles );

	OFX::ClipDescriptor* dstClip = desc.defineClip( kOfxImageEffectOutputClipName );
	dstClip->addSupportedComponent( OFX::ePixelComponentRGBA );
	dstClip->addSupportedComponent( OFX::ePixelComponentRGB );
	dstClip->addSupportedComponent( OFX::ePixelComponentAlpha );
	dstClip->setSupportsTiles( kSupportTiles );

	//global display
	OFX::BooleanParamDescriptor* boolGLOBAL = desc.defineBooleanParam(kGlobalDisplay);
	boolGLOBAL->setHint("Display global overlay on screen.");
	boolGLOBAL->setDefault(true);
		
    // if parametric parameters are supported
	if( OFX::getImageEffectHostDescription()->supportsParametricParameter )
	{
		OFX::ParametricParamDescriptor* curvesRGB = desc.defineParametricParam( kParamRGBColorSelection );
		OFX::ParametricParamDescriptor* curvesHSL = desc.defineParametricParam( kParamHSLColorSelection );
		
		//Group Param (RGB & HSL)
		OFX::GroupParamDescriptor *groupRGB = desc.defineGroupParam(kGroupRGB);
		groupRGB->setLabel(kGroupRGBLabel);
		OFX::GroupParamDescriptor *groupHSL = desc.defineGroupParam(kGroupHSL);
		groupHSL->setLabel(kGroupHSLLabel);

		//define the graphic aspect
		curvesRGB->setRange( 0.0, 1.0 );		//set range on RGB curve
		curvesHSL->setRange( 0.0, 1.0 );		//set range on HSL curve
		curvesRGB->setDimension(nbCurvesRGB);	//3 curves on RGB
		curvesHSL->setDimension(nbCurvesHSL);	//3 curves on HSL

		//Add curves RGB
		curvesRGB->setDimensionLabel( kParamColorSelectionRed, 0 );			// 0 on RGB is red
		curvesRGB->setDimensionLabel( kParamColorSelectionGreen, 1 );		// 1 on RGB is green
		curvesRGB->setDimensionLabel( kParamColorSelectionBlue, 2 );		// 2 on RGB is blue
		//Add curves HSL
		curvesHSL->setDimensionLabel( kParamColorSelectionHue, 0 );			// 0 on HSL is hue
		curvesHSL->setDimensionLabel( kParamColorSelectionSaturation, 1 );	// 1 on HSL is saturation
		curvesHSL->setDimensionLabel( kParamColorSelectionLightness, 2 );	// 2 on HSK is lightness
		//define curves color RGB 
		curvesRGB->setHint( "Color selection" );		
		static const OfxRGBColourD red   = {1,0,0};		//set red color to red curve
		static const OfxRGBColourD green = {0,1,0};		//set green color to green curve
		static const OfxRGBColourD blue  = {0,0,1};		//set blue color to blue curve
		curvesRGB->setUIColour( 0, red );
		curvesRGB->setUIColour( 1, green );
		curvesRGB->setUIColour( 2, blue );
		//define curves color HSL 
		curvesHSL->setHint( "Color selection" );
		curvesHSL->setUIColour( 0, red );		//set red color on hue curve
		curvesHSL->setUIColour( 1, green );		//set green color on saturation curve
		curvesHSL->setUIColour( 2, blue );		//set lightness color on saturation curve
		
		curvesRGB->setInteractDescriptor( new OFX::DefaultParamInteractWrap<RGBParamOverlayDescriptor>() );	//attach parametric curve to RGBOverlay
		curvesHSL->setInteractDescriptor( new OFX::DefaultParamInteractWrap<HSLParamOverlayDescriptor>() );	//attach parametric curve to HSLOverlay
		
		//add curves to their groups
		curvesRGB->setParent(groupRGB);	//add RGB curves to RGB group
		curvesHSL->setParent(groupHSL); //add HSL curves to HSL group 
		
		//Set each curves to initial value
		curvesRGB->setIdentity();
		curvesHSL->setIdentity();
		//add 2 control points (0,1) and (1,1) for each channel
		for(unsigned int i=0; i< nbCurvesRGB; ++i)
		{
			//curvesRGB->addControlPoint( i, 0.0, 0.0, 1.0, false );
			curvesRGB->addControlPoint( i, 0.0, 1.0, 1.0, false );
		}
		for(unsigned int i=0; i< nbCurvesHSL; ++i)
		{
			//curvesHSL->addControlPoint( i, 0.0, 0.0, 1.0, false );
			curvesHSL->addControlPoint( i, 0.0, 1.0, 1.0, false );
		}
		
		//Channels checkboxes (RGB)
		OFX::BooleanParamDescriptor* boolR = desc.defineBooleanParam(kBoolRed);
		boolR->setDefault(false);							//red channel is not selected by default
		boolR->setHint("Activate Red channel");
		boolR->setLayoutHint( OFX::eLayoutHintNoNewLine ); //line is not finished
		boolR->setParent(groupRGB);
		//red multiplier
		OFX::DoubleParamDescriptor* redMultiplier = desc.defineDoubleParam(kMultiplierRed);
		redMultiplier->setLabel(kMultiplierLabel);
		redMultiplier->setHint("Determinate curve from selection precision.");
		redMultiplier->setRange(1, 1000);
		redMultiplier->setDisplayRange(0,5);
		redMultiplier->setDefault(1);
//.........这里部分代码省略.........