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();
}