#include <qpainter.h>#include "imageeditor.h"ImageEditor::ImageEditor(QWidget *parent, const char *name)    : QScrollView(parent, name, WStaticContents | WNoAutoErase){    curColor = black;    zoom = 8;    curImage.create(16, 16, 32);    curImage.fill(qRgba(0, 0, 0, 0));    curImage.setAlphaBuffer(true);    resizeContents();}void ImageEditor::resizeContents(){    QSize size = zoom * curImage.size();    if (zoom >= 3)        size += QSize(1, 1);    QScrollView::resizeContents(size.width(), size.height());}void ImageEditor::setPenColor(const QColor &newColor){    curColor = newColor;}void ImageEditor::setImage(const QImage &newImage){    if (newImage != curImage) {        curImage = newImage.convertDepth(32);        curImage.detach();        resizeContents();        updateContents();    }}void ImageEditor::setZoomFactor(int newZoom){    if (newZoom < 1)        newZoom = 1;    if (newZoom != zoom) {        zoom = newZoom;        resizeContents();        updateContents();    }}void ImageEditor::drawContents(QPainter *painter, int, int, int, int){    if (zoom >= 3) {        painter->setPen(colorGroup().foreground());        for (int i = 0; i <= curImage.width(); ++i)            painter->drawLine(zoom * i, 0,                              zoom * i, zoom * curImage.height());        for (int j = 0; j <= curImage.height(); ++j)            painter->drawLine(0, zoom * j,                              zoom * curImage.width(), zoom * j);    }    for (int i = 0; i < curImage.width(); ++i) {        for (int j = 0; j < curImage.height(); ++j)            drawImagePixel(painter, i, j);    }}void ImageEditor::drawImagePixel(QPainter *painter, int i, int j){    QColor color;    QRgb rgb = curImage.pixel(i, j);    if (qAlpha(rgb) == 0)        color = colorGroup().base();    else        color.setRgb(rgb);    if (zoom >= 3) {        painter->fillRect(zoom * i + 1, zoom * j + 1,                          zoom - 1, zoom - 1, color);    } else {        painter->fillRect(zoom * i, zoom * j,                          zoom, zoom, color);    }}void ImageEditor::contentsMousePressEvent(QMouseEvent *event){    if (event->button() == LeftButton)        setImagePixel(event->pos(), true);    else if (event->button() == RightButton)        setImagePixel(event->pos(), false);}void ImageEditor::contentsMouseMoveEvent(QMouseEvent *event){    if (event->state() & LeftButton)        setImagePixel(event->pos(), true);    else if (event->state() & RightButton)        setImagePixel(event->pos(), false);}void ImageEditor::setImagePixel(const QPoint &pos, bool opaque){    int i = pos.x() / zoom;    int j = pos.y() / zoom;    if (curImage.rect().contains(i, j)) {        if (opaque)            curImage.setPixel(i, j, penColor().rgb());        else            curImage.setPixel(i, j, qRgba(0, 0, 0, 0));        QPainter painter(viewport());        painter.translate(-contentsX(), -contentsY());        drawImagePixel(&painter, i, j);    }}