File indexing completed on 2024-04-21 03:44:59

 /*
     SPDX-FileCopyrightText: 2005 Jason Harris and Jasem Mutlaq <kstars@30doradus.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "thumbimage.h"
 
 #include <QMouseEvent>
 #include <QPainter>
 #include <QPen>
 
 QPixmap ThumbImage::croppedImage()
 {
     return Image->copy(*CropRect);
 }
 
 ThumbImage::ThumbImage(QWidget *parent, const char *name) : QLabel(parent)
 {
     //FIXME: Deprecated?  Maybe we don't need this, since double-buffering is now built in
     //  setBackgroundMode( Qt::WA_NoBackground );
 
     setObjectName(name);
 
     CropRect.reset(new QRect());
     Anchor.reset(new QPoint());
     Image.reset(new QPixmap());
 }
 
 void ThumbImage::paintEvent(QPaintEvent *)
 {
     QPainter p;
     p.begin(this);
 
     p.drawPixmap(0, 0, *Image);
 
     p.setPen(QPen(QColor("Grey"), 2));
     p.drawRect(*CropRect);
 
     p.setPen(QPen(QColor("Grey"), 0));
     p.drawRect(QRect(CropRect->left(), CropRect->top(), HandleSize, HandleSize));
     p.drawRect(QRect(CropRect->right() - HandleSize, CropRect->top(), HandleSize, HandleSize));
     p.drawRect(QRect(CropRect->left(), CropRect->bottom() - HandleSize, HandleSize, HandleSize));
     p.drawRect(QRect(CropRect->right() - HandleSize, CropRect->bottom() - HandleSize, HandleSize, HandleSize));
 
     if (CropRect->x() > 0)
         p.fillRect(0, 0, CropRect->x(), height(), QBrush(QColor("white"), Qt::Dense3Pattern));
     if (CropRect->right() < width())
         p.fillRect(CropRect->right(), 0, (width() - CropRect->right()), height(),
                    QBrush(QColor("white"), Qt::Dense3Pattern));
     if (CropRect->y() > 0)
         p.fillRect(0, 0, width(), CropRect->y(), QBrush(QColor("white"), Qt::Dense3Pattern));
     if (CropRect->bottom() < height())
         p.fillRect(0, CropRect->bottom(), width(), (height() - CropRect->bottom()),
                    QBrush(QColor("white"), Qt::Dense3Pattern));
 
     p.end();
 }
 
 void ThumbImage::mousePressEvent(QMouseEvent *e)
 {
     if (e->button() == Qt::LeftButton && CropRect->contains(e->pos()))
     {
         bMouseButtonDown = true;
 
         //The Anchor tells how far from the CropRect corner we clicked
         Anchor->setX(e->x() - CropRect->left());
         Anchor->setY(e->y() - CropRect->top());
 
         if (e->x() <= CropRect->left() + HandleSize && e->y() <= CropRect->top() + HandleSize)
         {
             bTopLeftGrab = true;
         }
         if (e->x() <= CropRect->left() + HandleSize && e->y() >= CropRect->bottom() - HandleSize)
         {
             bBottomLeftGrab = true;
             Anchor->setY(e->y() - CropRect->bottom());
         }
         if (e->x() >= CropRect->right() - HandleSize && e->y() <= CropRect->top() + HandleSize)
         {
             bTopRightGrab = true;
             Anchor->setX(e->x() - CropRect->right());
         }
         if (e->x() >= CropRect->right() - HandleSize && e->y() >= CropRect->bottom() - HandleSize)
         {
             bBottomRightGrab = true;
             Anchor->setX(e->x() - CropRect->right());
             Anchor->setY(e->y() - CropRect->bottom());
         }
     }
 }
 
 void ThumbImage::mouseReleaseEvent(QMouseEvent *)
 {
     if (bMouseButtonDown)
         bMouseButtonDown = false;
     if (bTopLeftGrab)
         bTopLeftGrab = false;
     if (bTopRightGrab)
         bTopRightGrab = false;
     if (bBottomLeftGrab)
         bBottomLeftGrab = false;
     if (bBottomRightGrab)
         bBottomRightGrab = false;
 }
 
 void ThumbImage::mouseMoveEvent(QMouseEvent *e)
 {
     if (bMouseButtonDown)
     {
         //If a corner was grabbed, we are resizing the box
         if (bTopLeftGrab)
         {
             if (e->x() >= 0 && e->x() <= width())
                 CropRect->setLeft(e->x() - Anchor->x());
             if (e->y() >= 0 && e->y() <= height())
                 CropRect->setTop(e->y() - Anchor->y());
             if (CropRect->left() < 0)
                 CropRect->setLeft(0);
             if (CropRect->top() < 0)
                 CropRect->setTop(0);
             if (CropRect->width() < 200)
                 CropRect->setLeft(CropRect->left() - 200 + CropRect->width());
             if (CropRect->height() < 200)
                 CropRect->setTop(CropRect->top() - 200 + CropRect->height());
         }
         else if (bTopRightGrab)
         {
             if (e->x() >= 0 && e->x() <= width())
                 CropRect->setRight(e->x() - Anchor->x());
             if (e->y() >= 0 && e->y() <= height())
                 CropRect->setTop(e->y() - Anchor->y());
             if (CropRect->right() > width())
                 CropRect->setRight(width());
             if (CropRect->top() < 0)
                 CropRect->setTop(0);
             if (CropRect->width() < 200)
                 CropRect->setRight(CropRect->right() + 200 - CropRect->width());
             if (CropRect->height() < 200)
                 CropRect->setTop(CropRect->top() - 200 + CropRect->height());
         }
         else if (bBottomLeftGrab)
         {
             if (e->x() >= 0 && e->x() <= width())
                 CropRect->setLeft(e->x() - Anchor->x());
             if (e->y() >= 0 && e->y() <= height())
                 CropRect->setBottom(e->y() - Anchor->y());
             if (CropRect->left() < 0)
                 CropRect->setLeft(0);
             if (CropRect->bottom() > height())
                 CropRect->setBottom(height());
             if (CropRect->width() < 200)
                 CropRect->setLeft(CropRect->left() - 200 + CropRect->width());
             if (CropRect->height() < 200)
                 CropRect->setBottom(CropRect->bottom() + 200 - CropRect->height());
         }
         else if (bBottomRightGrab)
         {
             if (e->x() >= 0 && e->x() <= width())
                 CropRect->setRight(e->x() - Anchor->x());
             if (e->y() >= 0 && e->y() <= height())
                 CropRect->setBottom(e->y() - Anchor->y());
             if (CropRect->right() > width())
                 CropRect->setRight(width());
             if (CropRect->bottom() > height())
                 CropRect->setBottom(height());
             if (CropRect->width() < 200)
                 CropRect->setRight(CropRect->right() + 200 - CropRect->width());
             if (CropRect->height() < 200)
                 CropRect->setBottom(CropRect->bottom() + 200 - CropRect->height());
         }
         else //no corner grabbed; move croprect
         {
             CropRect->moveTopLeft(QPoint(e->x() - Anchor->x(), e->y() - Anchor->y()));
             if (CropRect->left() < 0)
                 CropRect->moveLeft(0);
             if (CropRect->right() > width())
                 CropRect->moveRight(width());
             if (CropRect->top() < 0)
                 CropRect->moveTop(0);
             if (CropRect->bottom() > height())
                 CropRect->moveBottom(height());
         }
 
         emit cropRegionModified();
         update();
     }
 }