Summerize Abgabe

Abgabe/Abgabe 4/Painting/Layer/PaintingArea.cpp

@@ -0,0 +1,164 @@
+// ---------- PaintingArea.cpp ----------
+
+#include <QtWidgets>
+#include<QRect>
+#include "PaintingArea.h"
+#include "Image/IntelliRasterImage.h"
+#include "Image/IntelliShapedImage.h"
+
+#include<vector>
+#include<QPoint>
+
+PaintingArea::PaintingArea(QWidget *parent)
+    : QWidget(parent)
+{
+    //create standart image
+    this->image = new IntelliRasterImage(400,400);
+    std::vector<QPoint> poly;
+    poly.push_back(QPoint(200,0));
+    poly.push_back(QPoint(400,300));
+    poly.push_back(QPoint(0,300));
+    poly.push_back(QPoint(200,0));
+    image->setPolygon(poly);
+
+    this->setUp();
+}
+
+void PaintingArea::setUp(){
+    // Roots the widget to the top left even if resized
+    setAttribute(Qt::WA_StaticContents);
+
+    // Set defaults for the monitored variables
+    scribbling = false;
+    myPenWidth = 1;
+    myPenColor = Qt::blue;
+
+}
+
+PaintingArea::PaintingArea(int width, int height, ImageType type, QWidget *parent)
+    : QWidget(parent){
+    if(type==ImageType::Raster_Image){
+        this->image = new IntelliRasterImage(width, height);
+    }else if(type==ImageType::Shaped_Image){
+        this->image = new IntelliShapedImage(width, height);
+    }else{
+        qDebug() << "No valid Image type error";
+        return;
+    }
+    this->setUp();
+}
+
+
+// Used to load the image and place it in the widget
+bool PaintingArea::openImage(const QString &fileName)
+{
+    bool open = image->loadImage(fileName);
+    update();
+    return open;
+}
+
+// Save the current image
+bool PaintingArea::saveImage(const QString &fileName, const char *fileFormat)
+{
+    // Created to hold the image
+    QImage visibleImage = image->getDisplayable();
+
+    if (visibleImage.save(fileName, fileFormat)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+// Used to change the pen color
+void PaintingArea::setPenColor(const QColor &newColor)
+{
+    myPenColor = newColor;
+}
+
+// Used to change the pen width
+void PaintingArea::setPenWidth(int newWidth)
+{
+    myPenWidth = newWidth;
+}
+
+// Color the image area with white
+void PaintingArea::clearImage()
+{
+    image->floodFill(qRgb(255, 255, 255));
+    update();
+}
+
+// If a mouse button is pressed check if it was the
+// left button and if so store the current position
+// Set that we are currently drawing
+void PaintingArea::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton) {
+        int x = event->x()*(float)image->x()/(float)size().width();
+        int y = event->y()*(float)image->y()/(float)size().height();
+        lastPoint=QPoint(x,y);
+        scribbling = true;
+    }
+}
+
+
+// When the mouse moves if the left button is clicked
+// we call the drawline function which draws a line
+// from the last position to the current
+void PaintingArea::mouseMoveEvent(QMouseEvent *event)
+{
+    if ((event->buttons() & Qt::LeftButton) && scribbling){
+        int x = event->x()*(float)image->x()/(float)size().width();
+        int y = event->y()*(float)image->y()/(float)size().height();
+        drawLineTo(QPoint(x,y));
+        update();
+    }
+}
+
+// If the button is released we set variables to stop drawing
+void PaintingArea::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton && scribbling) {
+        int x = event->x()*(float)image->x()/(float)size().width();
+        int y = event->y()*(float)image->y()/(float)size().height();
+        drawLineTo(QPoint(x,y));
+        update();
+        scribbling = false;
+    }
+}
+
+// QPainter provides functions to draw on the widget
+// The QPaintEvent is sent to widgets that need to
+// update themselves
+void PaintingArea::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+    QRect dirtyRec = event->rect();
+    painter.drawImage(dirtyRec, image->getDisplayable(dirtyRec.size()), dirtyRec);
+    update();
+}
+
+// Resize the image to slightly larger then the main window
+// to cut down on the need to resize the image
+void PaintingArea::resizeEvent(QResizeEvent *event)
+{
+    QPainter painter(this);
+    QRect dirtyRec(QPoint(0,0), event->size());
+    painter.drawImage(dirtyRec, image->getDisplayable(event->size()), dirtyRec);
+    update();
+    //QWidget::resizeEvent(event);
+}
+
+void PaintingArea::drawLineTo(const QPoint &endPoint)
+{
+    // Used to draw on the widget
+    image->drawLine(lastPoint, endPoint,myPenColor, myPenWidth);
+    lastPoint = endPoint;
+    update();
+}
+
+void PaintingArea::resizeImage(QImage *image_res, const QSize &newSize){
+    image_res->scaled(newSize,Qt::IgnoreAspectRatio);
+}
+