usbloadergx/source/libwiigui/gui_image.cpp

/****************************************************************************
 * libwiigui
 *
 * Tantric 2009
 *
 * gui_image.cpp
 *
 * GUI class definitions
 ***************************************************************************/

#include "gui.h"
/**
 * Constructor for the GuiImage class.
 */
GuiImage::GuiImage()
{
    image = NULL;
    width = 0;
    height = 0;
    imageangle = 0;
    tile = -1;
    stripe = 0;
    widescreen = 0;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_DATA;
}

GuiImage::GuiImage( GuiImageData * img )
{
    if ( img )
    {
        image = img->GetImage();
        width = img->GetWidth();
        height = img->GetHeight();
    }
    else
    {
        image = NULL;
        width = 0;
        height = 0;
    }
    imageangle = 0;
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_DATA;
}

GuiImage::GuiImage( u8 * img, int w, int h )
{
    image = img;
    width = w;
    height = h;
    imageangle =  0;
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_TEXTURE;
}

GuiImage::GuiImage( int w, int h, GXColor c )
{
    image = ( u8 * )memalign ( 32, w * h * 4 );
    width = w;
    height = h;
    imageangle = 0;
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_COLOR;

    if ( !image )
        return;

    int x, y;

    for ( y = 0; y < h; y++ )
    {
        for ( x = 0; x < w; x++ )
        {
            this->SetPixel( x, y, c );
        }
    }
    int len = w * h * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    DCFlushRange( image, len );
}

GuiImage::GuiImage( GuiImage &srcimage ) : GuiElement()
{
    width = srcimage.GetWidth();
    height = srcimage.GetHeight();
    int len = width * height * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    image = ( u8 * )memalign ( 32, len );
    memcpy( image, srcimage.GetImage(), len );
    DCFlushRange( image, len );
    imageangle =  srcimage.GetAngle();
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_COPY;
}

GuiImage::GuiImage( GuiImage *srcimage ) : GuiElement()
{
    width = srcimage->GetWidth();
    height = srcimage->GetHeight();
    int len = width * height * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    image = ( u8 * )memalign ( 32, len );
    memcpy( image, srcimage->GetImage(), len );
    DCFlushRange( image, len );
    imageangle =  srcimage->GetAngle();
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_COPY;
}

GuiImage &GuiImage::operator=( GuiImage & srcimage )
{
    if ( ( imgType == IMAGE_COLOR || imgType == IMAGE_COPY ) && image )
    {
        free( image );
        image = NULL;
    }

    width = srcimage.GetWidth();
    height = srcimage.GetHeight();
    int len = width * height * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    image = ( u8 * )memalign ( 32, len );
    memcpy( image, srcimage.GetImage(), len );
    DCFlushRange( image, len );
    imageangle = srcimage.GetAngle();
    tile = -1;
    stripe = 0;
    widescreen = 0;
    parentangle = true;
    xx1 = 0;
    yy1 = 0;
    xx2 = 0;
    yy2 = 0;
    xx3 = 0;
    yy3 = 0;
    xx4 = 0;
    yy4 = 0;
    imgType = IMAGE_COPY;
    return *this;
}

/**
 * Destructor for the GuiImage class.
 */
GuiImage::~GuiImage()
{
    if ( ( imgType == IMAGE_COLOR || imgType == IMAGE_COPY ) && image )
    {
        free( image );
        image = NULL;
    }
}

u8 * GuiImage::GetImage()
{
    return image;
}

void GuiImage::SetImage( GuiImageData * img )
{
    LOCK( this );
    if ( ( imgType == IMAGE_COLOR || imgType == IMAGE_COPY ) && image )
    {
        free( image );
        image = NULL;
    }

    image = img->GetImage();
    width = img->GetWidth();
    height = img->GetHeight();
    imgType = IMAGE_DATA;
}

void GuiImage::SetImage( u8 * img, int w, int h )
{
    LOCK( this );
    if ( ( imgType == IMAGE_COLOR || imgType == IMAGE_COPY ) && image )
    {
        free( image );
        image = NULL;
    }
    image = img;
    width = w;
    height = h;
    imgType = IMAGE_TEXTURE;
}

void GuiImage::SetAngle( float a )
{
    LOCK( this );
    imageangle = a;
}
float GuiImage::GetAngle()
{
    return imageangle;
}

void GuiImage::SetTile( int t )
{
    LOCK( this );
    tile = t;
}

void GuiImage::SetWidescreen( bool w )
{
    LOCK( this );
    widescreen = w;
}
void GuiImage::SetParentAngle( bool a )
{
    LOCK( this );
    parentangle = a;
}

GXColor GuiImage::GetPixel( int x, int y )
{
    if ( !image || this->GetWidth() <= 0 || x < 0 || y < 0 )
        return ( GXColor ) {0, 0, 0, 0};

    u32 offset = ( ( ( y >> 2 ) << 4 ) * this->GetWidth() ) + ( ( x >> 2 ) << 6 ) + ( ( ( y % 4 << 2 ) + x % 4 ) << 1 );
    GXColor color;
    color.a = *( image + offset );
    color.r = *( image + offset + 1 );
    color.g = *( image + offset + 32 );
    color.b = *( image + offset + 33 );
    return color;
}

void GuiImage::SetPixel( int x, int y, GXColor color )
{
    LOCK( this );
    if ( !image || this->GetWidth() <= 0 || x < 0 || y < 0 )
        return;

    u32 offset = ( ( ( y >> 2 ) << 4 ) * this->GetWidth() ) + ( ( x >> 2 ) << 6 ) + ( ( ( y % 4 << 2 ) + x % 4 ) << 1 );
    *( image + offset ) = color.a;
    *( image + offset + 1 ) = color.r;
    *( image + offset + 32 ) = color.g;
    *( image + offset + 33 ) = color.b;
}

void GuiImage::SetGrayscale( void )
{
    LOCK( this );
    GXColor color;
    u32 offset, gray;

    for ( int x = 0; x < width; x++ )
    {
        for ( int y = 0; y < height; y++ )
        {
            offset = ( ( ( y >> 2 ) << 4 ) * width ) + ( ( x >> 2 ) << 6 ) + ( ( ( y % 4 << 2 ) + x % 4 ) << 1 );
            color.r = *( image + offset + 1 );
            color.g = *( image + offset + 32 );
            color.b = *( image + offset + 33 );

            gray = ( 77 * color.r + 150 * color.g + 28 * color.b ) / 255;

            *( image + offset + 1 ) = gray;
            *( image + offset + 32 ) = gray;
            *( image + offset + 33 ) = gray;
        }
    }

    int len = width * height * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    DCFlushRange( image, len );
}


void GuiImage::SetStripe( int s )
{
    LOCK( this );
    stripe = s;
}

void GuiImage::SetSkew( int XX1, int YY1, int XX2, int YY2, int XX3, int YY3, int XX4, int YY4 )
{

    xx1 = XX1;
    yy1 = YY1;
    xx2 = XX2;
    yy2 = YY2;
    xx3 = XX3;
    yy3 = YY3;
    xx4 = XX4;
    yy4 = YY4;
}
void GuiImage::SetSkew( int *skew )
{

    xx1 = *skew++;
    yy1 = *skew++;
    xx2 = *skew++;
    yy2 = *skew++;
    xx3 = *skew++;
    yy3 = *skew++;
    xx4 = *skew++;
    yy4 = *skew;
}



void GuiImage::ColorStripe( int shift )
{
    LOCK( this );
    int x, y;
    GXColor color;
    int alt = 0;

    for ( y = 0; y < this->GetHeight(); y++ )
    {
        if ( y % 3 == 0 )
            alt ^= 1;

        for ( x = 0; x < this->GetWidth(); x++ )
        {
            color = GetPixel( x, y );

            if ( alt )
            {
                if ( color.r < 255 - shift )
                    color.r += shift;
                else
                    color.r = 255;
                if ( color.g < 255 - shift )
                    color.g += shift;
                else
                    color.g = 255;
                if ( color.b < 255 - shift )
                    color.b += shift;
                else
                    color.b = 255;

                color.a = 255;
            }
            else
            {
                if ( color.r > shift )
                    color.r -= shift;
                else
                    color.r = 0;
                if ( color.g > shift )
                    color.g -= shift;
                else
                    color.g = 0;
                if ( color.b > shift )
                    color.b -= shift;
                else
                    color.b = 0;

                color.a = 255;
            }
            SetPixel( x, y, color );
        }
    }

    int len = width * height * 4;
    if ( len % 32 ) len += ( 32 - len % 32 );
    DCFlushRange( image, len );
}

/**
 * Draw the button on screen
 */

void GuiImage::Draw()
{
    LOCK( this );
    if ( !image || !this->IsVisible() || tile == 0 )
        return;

    float currScale = this->GetScale();
    int currLeft = this->GetLeft();

    float currAngleDyn = this->GetAngleDyn();

    if ( currAngleDyn && parentangle )
        imageangle = currAngleDyn;



    if ( tile > 0 )
    {
        for ( int i = 0; i < tile; i++ )
            Menu_DrawImg( currLeft + width*i, this->GetTop(), zoffset, width, height, image, imageangle, widescreen ? currScale*0.80 : currScale, currScale, this->GetAlpha(), xx1, yy1, xx2, yy2, xx3, yy3, xx4, yy4 );
    }
    else
    {
        // temporary (maybe), used to correct offset for scaled images
        if ( scale != 1 )
            currLeft = currLeft - width / 2 + ( width * scale ) / 2;

        Menu_DrawImg( currLeft, this->GetTop(), zoffset, width, height, image, imageangle, widescreen ? currScale*0.80 : currScale, currScale, this->GetAlpha(), xx1, yy1, xx2, yy2, xx3, yy3, xx4, yy4 );
    }

    if ( stripe > 0 )
        for ( int y = 0; y < this->GetHeight(); y += 6 )
            Menu_DrawRectangle( currLeft, this->GetTop() + y, this->GetWidth(), 3, ( GXColor ) {0, 0, 0, stripe}, 1 );




    this->UpdateEffects();
}