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photo_frame.cpp
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#include "photo_frame.h"
#include "ui_photo_frame.h"
using namespace cv;
using namespace std;
float zoom_times=1;
float zoom_scale=0;
int pixmap_width=0;
int pixmap_height=0;
int begin_pointX;
int begin_pointY;
photo_frame::photo_frame(QWidget *parent) :
QDialog(parent),
ui(new Ui::photo_frame)
{
ui->setupUi(this);
ui->label->setMouseTracking(true);
//QVBoxLayout *lay = new QVBoxLayout(this);
this->setWindowFlags(windowFlags() | Qt::WindowMinimizeButtonHint|Qt::WindowMaximizeButtonHint);
//lay->addWidget(ui->label);
//lay->alignment()
//ui->scrollAreaWidgetContents->setLayout(lay);
/* static QString size;
Pixmap=QPixmap::fromImage(Mat2QImage(image[currentstep]));
size=QString::number(Pixmap.width())+"x"+QString::number(Pixmap.height());
int window_height=900;
int window_width=Pixmap.width()*800/Pixmap.height(); //which is the width after scaled
ui->label->setPixmap(Pixmap);
this->resize(window_width+50,window_height+50);*/
}
void photo_frame::frame_load(Mat frame){
if(!frame.empty()){
QString size;
Pixmap=QPixmap::fromImage(Mat2QImage(frame));
pixmap_width=Pixmap.width();
pixmap_height=Pixmap.height();
size=QString::number(pixmap_width)+"x"+QString::number(pixmap_height);
this->setWindowTitle(size);
int window_height=900;
int window_width=pixmap_width*window_height/pixmap_height; //which is the width after scaled
this->setGeometry(100,100,window_width,window_height);
//this->resize(window_width+50,window_height+100);
on_fit_btn_clicked();
//imshow("new",image[currentstep]);
}
}
void photo_frame::frame_update(Mat frame){
if(!frame.empty()){
Pixmap=QPixmap::fromImage(Mat2QImage(frame));
QString size;
pixmap_width=Pixmap.width();
pixmap_height=Pixmap.height();
size=QString::number(pixmap_width)+"x"+QString::number(pixmap_height);
this->setWindowTitle(size);
int pixmap_height_t=float(pixmap_height)*zoom_times;
QPixmap ZPixmap=Pixmap.scaledToHeight(pixmap_height_t);
ui->label->setPixmap(ZPixmap);
}
}
QImage photo_frame::Mat2QImage(const Mat src){
//return QImage((unsigned char*) src.data, src.cols, src.rows, QImage::Format_RGB888).rgbSwapped();
if(src.type()==CV_8UC1){
QVector<QRgb> colorTable;
for(int i=0; i<256; i++)
colorTable.push_back(qRgb(i,i,i));
const uchar *qImageBuffer=(const uchar*)src.data;
QImage img(qImageBuffer,src.cols,src.rows,src.step,QImage::Format_Indexed8);
img.setColorTable(colorTable);
return img;
}
if(src.type()==CV_8UC3){
const uchar *qImageBuffer=(const uchar*)src.data;
QImage img(qImageBuffer,src.cols,src.rows,src.step,QImage::Format_RGB888);
return img.rgbSwapped();
}
else{
cout<<"Error!";
return QImage();
}
}
photo_frame::~photo_frame()
{
delete ui;
}
void photo_frame::on_zoomin_btn_clicked()
{
if(zoom_times<2){
zoom_times= zoom_times+0.05;}
int pixmap_height_t=int(pixmap_height*zoom_times);
//ui->fit_btn->setText(QString::number(pixmap_height_t));
QPixmap ZPixmap=Pixmap.scaledToHeight(pixmap_height_t);
ui->label->setPixmap(ZPixmap);
}
void photo_frame::on_zoomout_btn_clicked()
{
if(zoom_times>0.1){
zoom_times=zoom_times-0.05;}
int pixmap_height_t=int(pixmap_height*zoom_times);
QPixmap ZPixmap=Pixmap.scaledToHeight(pixmap_height_t);
ui->label->setPixmap(ZPixmap);
}
void photo_frame::on_fit_btn_clicked()
{
float pixmap_height_f=float(ui->scrollArea->height())-40;
zoom_times=pixmap_height_f/float(pixmap_height);
int pixmap_height_t=pixmap_height*zoom_times;
QPixmap ZPixmap=Pixmap.scaledToHeight(pixmap_height_t);
if(ui->scrollArea->width()<ZPixmap.width()){
if(!this->isMaximized()){
this->resize(ZPixmap.width()+20,this->height());}
}
ui->label->setPixmap(ZPixmap);
}
void photo_frame::on_ori_btn_clicked()
{
zoom_times=1;
int pixmap_height_t=int(pixmap_height*zoom_times);
QPixmap ZPixmap=Pixmap.scaledToHeight(pixmap_height_t);
ui->label->setPixmap(ZPixmap);
}
void photo_frame::mouseMoveEvent(QMouseEvent *event){
//static int oldx=0,oldy=0;
int x=event->x();
int y=event->y();
int P_x=(ui->scrollArea->width()-pixmap_width*zoom_times)/2+1;
int P_y=(ui->scrollArea->height()-pixmap_height*zoom_times)/2+1;
int realx=(x-P_x)/zoom_times;
int realy=(y-P_y-ui->scrollArea->y())/zoom_times;
if(realx>Pixmap.width())
realx=Pixmap.width();
else if(realx<0)
realx=0;
if(realy>Pixmap.height())
realy=Pixmap.height();
else if(realx<0)
realy=0;
Mat drawrec;
drawrec=image[currentstep].clone(); // if we use "=", the right Mat will change whith the left Mat
rectangle(drawrec, Point(begin_pointX,begin_pointY), Point(realx,realy), Scalar(0,0,255), 5);
frame_update(drawrec);
//ui->test->setText(QString(tr("(%1, %2)")).arg(QString::number(P_x), QString::number(P_y)));//arg()函數可以替換掉QString中出現的佔位符。佔位符為%加位置，如%1、%2。
}
void photo_frame::mousePressEvent(QMouseEvent *event){
on_fit_btn_clicked();
int x=event->x();
int y=event->y();
int P_x=(ui->scrollArea->width()-pixmap_width*zoom_times)/2+1;
int P_y=(ui->scrollArea->height()-pixmap_height*zoom_times)/2+1;
begin_pointX=(x-P_x)/zoom_times;
begin_pointY=(y-P_y-ui->scrollArea->y())/zoom_times;
if(begin_pointX>Pixmap.width())
begin_pointX=Pixmap.width();
else if(begin_pointX<0)
begin_pointX=0;
if(begin_pointY>Pixmap.height())
begin_pointY=Pixmap.height();
else if(begin_pointY<0)
begin_pointY=0;
}
void photo_frame::mouseReleaseEvent(QMouseEvent *event){
int x=event->x();
int y=event->y();
int P_x=(ui->scrollArea->width()-pixmap_width*zoom_times)/2+1;
int P_y=(ui->scrollArea->height()-pixmap_height*zoom_times)/2+1;
int end_pointX=(x-P_x)/zoom_times;
int end_pointY=(y-P_y-ui->scrollArea->y())/zoom_times;
if(end_pointX>Pixmap.width())
end_pointX=Pixmap.width();
else if(end_pointX<0)
end_pointX=0;
if(end_pointY>Pixmap.height())
end_pointY=Pixmap.height();
else if(end_pointY<0)
end_pointY=0;
QMessageBox message(QMessageBox::NoIcon, "Cut", "Do you want to cut down this area?", QMessageBox::Yes | QMessageBox::No, NULL);
if(message.exec() == QMessageBox::Yes)
{
//Rect roi(10, 20, 100, 50);
image[currentstep+1] = image[currentstep](Range(begin_pointY,end_pointY), Range(begin_pointX,end_pointX)).clone();
currentstep++;
frame_load(image[currentstep]);
}
else
frame_update(image[currentstep]);
}