/*

     File: AppView.m

 Abstract: 

 View class implementation for the application.

  Version: 2.0

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 */

#pragma mark -

#pragma mark Private - Headers

#import "CVGLSLUnitMediator.h"

#import "AppView.h"

#pragma mark -

#pragma mark Private - Data Structures

struct AppViewUniforms

{    

    BOOL     mbStyle;       // The shader style (if more than one)

    GLfloat  m_Value[5];    // Uniform values

};

typedef struct AppViewUniforms   AppViewUniforms;

struct AppViewData

{

    AppViewUniforms     m_Uniforms;         // Uniform values

    CVGLSLUnitTypes     mnShaderType;       // Shader selection

    CVGLSLUnitMediator *mpUnitMediator;

};

typedef struct AppViewData  AppViewData;

#pragma mark -

#pragma mark Private - Utilties - Accessors

// Setting uniform values for color well

static inline void AppViewSetColorWell(const NSColor *pColor,

                                       AppViewDataRef pAppView)

{

    if(pColor)

    {

        pAppView->m_Uniforms.m_Value[2] = [pColor redComponent];

        pAppView->m_Uniforms.m_Value[3] = [pColor greenComponent];

        pAppView->m_Uniforms.m_Value[4] = [pColor blueComponent];

    } // if

} //  setUniformColorWell

static inline void AppViewSetDefaults(AppViewDataRef pAppView)

{

    // Default shader type

    pAppView->mnShaderType = kCVGLSLUnitBlur;

    // Default uniform values for the shader(s)

    pAppView->m_Uniforms.m_Value[0] = 0.5f;

    pAppView->m_Uniforms.m_Value[1] = 0.5f;

    pAppView->m_Uniforms.m_Value[2] = 0.5f;

    pAppView->m_Uniforms.m_Value[3] = 0.5f;

    pAppView->m_Uniforms.m_Value[4] = 0.5f;

} // AppViewSetDefaults

#pragma mark -

#pragma mark Private - Utilties - Constructors

// Constructor for CoreVideo OpenGL view

static AppViewDataRef AppViewCreate(const NSColor *pColor)

{

    AppViewDataRef pAppView = (AppViewDataRef)calloc(1, sizeof(AppViewData));

    if(pAppView != NULL)

    {        

        AppViewSetDefaults(pAppView);

        AppViewSetColorWell(pColor, pAppView);

    } // if

    else

    {

        NSLog(@">> [App View] ERROR: Failure Allocating Memory For View Attributes!");

    } // else

    return pAppView;

} // AppViewCreate

#pragma mark -

#pragma mark Private - Utilties - Destructors

static inline void AppViewDeleteMediator(AppViewDataRef pAppView)

{

    if(pAppView->mpUnitMediator)

    {

        [pAppView->mpUnitMediator release];

        pAppView->mpUnitMediator = nil;

    } // if

} // AppViewDeleteMediator

// Delete the object

static void AppViewDelete(AppViewDataRef pAppView)

{

    if(pAppView != NULL)

    {

        AppViewDeleteMediator(pAppView);

        free(pAppView);

        pAppView = NULL;

    } // if

} // AppViewDelete

#pragma mark -

@implementation AppView

#pragma mark -

#pragma mark Public - Awake From Nib

- (id) initWithFrame:(NSRect)frame

{

    self = [super initWithFrame:frame];

    if(self)

    {

        mpAppView = AppViewCreate(NULL);

    } // if

    return self;

} // initWithFrame

#pragma mark -

#pragma mark Public - Destructors

// It is very important that we clean up the rendering objects before the

// view is disposed, remember that with the display link running you're

// applications render callback may be called at any time including when

// the application is quitting or the view is being disposed, additionally

// you need to make sure you're not consuming OpenGL resources or leaking

// textures -- this clean up routine makes sure to stop and release

// everything.

- (void) cleanUp

{    

    AppViewDelete(mpAppView);

    [super cleanUp];

} // cleanUp

- (void) dealloc

{

    AppViewDelete(mpAppView);

    [super dealloc];

} // dealloc

#pragma mark -

#pragma mark Public - Display

- (void) display

{

    // Draw into the view

    [mpAppView->mpUnitMediator execute:[self buffer]

                                  type:mpAppView->mnShaderType

                                  flag:mpAppView->m_Uniforms.mbStyle

                                 value:mpAppView->m_Uniforms.m_Value];

} // display

#pragma mark -

#pragma mark Public - Accessors - Setters

// Shader selection from popup button

- (void) setShaderItem:(const CVGLSLUnitTypes)theShader

{

    mpAppView->mnShaderType = theShader;

} // setShaderItem

// Setting uniform value for top slider

- (void)  setUniformWithTopPanelControls:(const float)theValue

{

    mpAppView->m_Uniforms.m_Value[0] = theValue;

} //  setUniformWithTopPanelControls

// Setting uniform value for bottom slider

- (void)  setUniformWithBottomPanelControls:(const float)theValue

{

    mpAppView->m_Uniforms.m_Value[1] = theValue;

} //  setUniformWithBottomPanelControls

// Setting uniform value for color match accessory slider

- (void)  setUniformWithColorPanelSlider:(const float)theValue

{

    mpAppView->m_Uniforms.m_Value[1] = theValue;

} //  setUniformWithColorPanelSlider

// Setting uniform values for color well

- (void)  setUniformWithColorWell:(const NSColor *)theColor

{

    AppViewSetColorWell(theColor, mpAppView);

} //  setUniformWithColorWell

// The flag for style

- (void)  setUniformWithPushButtonState:(const BOOL)theFlag

{

    mpAppView->m_Uniforms.mbStyle = theFlag;

} //  setUniformWithPushButtonState

#pragma mark -

#pragma mark Public - Utilities - Movie

// Open a Movie File and instantiate a QTMovie object

- (BOOL) openMovie:(NSString *)thePath

{

    BOOL bSuccess = [super openMovie:thePath];

    if(bSuccess)

    {

        NSSize size = [self size];

        if(!mpAppView->mpUnitMediator)

        {

            mpAppView->mpUnitMediator = [CVGLSLUnitMediator new];

        } // if

        [mpAppView->mpUnitMediator setSize:&size];

    } // if

    return bSuccess;

} // openMovie

@end