#include?“centerwidget.h“
#include
#include
#include?“mainwindow.h“
#include
#include
CenterWidget::CenterWidget（QWidget?*parent）?:
????QWidget（parent）{
????//lines.clear（）;
????//ellipses.clear（）;
????//rects.clear（）;
????shapes.clear（）;????????????????????//////////////////////
????beginDraw=false;
????colorType=0;

????isModified=false;
????fileName=tr（““）;
????mousePosLabel=new?QLabel;
????mousePosLabel->setText（““）;
????mousePosLabel->setFixedWidth（150）;
????MainWindow?*p=（MainWindow?*）parent;
????p->statusBar（）->addPermanentWidget（mousePosLabel）;

????setMinimumSize（500400）;
????setMouseTracking（true）;
}
void?CenterWidget::paintEvent（QPaintEvent?*）{
????QPainter?p（this）;
????/*for（auto?const&?line:lines）
????????p.drawLine（line）;
????for（auto?const&?ellipse:ellipses）
????????p.drawEllipse（ellipse）;
????for（auto?const&?rect:rects）
???????p.drawRect（rect）;
????if（beginDraw==true）{
????????switch（drawType）{
????????case?0:?p.drawLine（p1p2）;?break;
????????case?1:?p.drawEllipse（QRect（p1p2））;?break;
????????case?2:?p.drawRect（QRect（p1p2））;?break;
????????}
????}*/
????QColor?c;
????for（auto?shape:shapes）{
????????switch（colorType）{
????????case?0:shape->setColor（Qt::black）;c=Qt::black;break;
????????case?1:shape->setColor（Qt::green）;c=Qt::green;break;
????????case?2:shape->setColor（Qt::red）;c=Qt::red;break;
????????}
????????shape->draw（&p）;????????????????//在此處內部寫入，修改顏色
????}

????Shape?*temp=nullptr;
????switch（drawType）{
????case?0:?temp=new?Line（p1p2c）;?break;
????case?1:?temp=new?Ellipse（p1p2c）;?break;
????case?2:?temp=new?Rectangle（p1p2c）;?break;
????}
????temp->draw（&p）;
????delete?temp;
}
void?CenterWidget::setDrawType（int?type）{
????drawType=type;
}
void?CenterWidget::setcolorType（int?color）{
????colorType=color;
}
void?CenterWidget::mousePressEvent（QMouseEvent?*e）{
????p1=e->pos（）;????????????????//鼠標按下得到第一個點
????p2=p1;
????beginDraw=true;
}
void?CenterWidget::mouseReleaseEvent（QMouseEvent?*e）{
????p2=e->pos（）;??????????????????//鼠標松開得到第二個點
????beginDraw=false;
????if（p1==p2）
????????return;
????//switch?（drawType）?{
????//case?0:lines.append（QLine（p1p2））;break;
????//case?1:ellipses.append（QRect（p1p2））;break;
????//case?2:rects.append（QRect（p1p2））;break;}
????Shape?*shape=nullptr;
????switch（drawType）{
????case?0:?shape=new?Line（p1p2）;?break;
????case?1:?shape=new?Ellipse（p1p2）;?break;
????case?2:?shape=new?Rectangle（p1p2）;?break;
????}
????shapes.append（shape）;
????isModified=true;
????update（）;
}
void?CenterWidget::mouseMoveEvent（QMouseEvent?*e）{
????mousePosLabel->setText（“X:“+QString::number（e->x（））+“Y:“?+QString::number（e->y（）））;
????if（beginDraw==false）
????????return;
????p2=e->pos（）;
????update（）;
}
bool?CenterWidget::getModifiedFlag（）{
????return?isModified;
}
void?CenterWidget::newDrawing（）{????????????????//新建繪圖
???//?lines.clear（）;
????//ellipses.clear（）;
??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????6444??2017-12-27?19:48??Draw6\centerwidget.cpp

?????文件???????1535??2017-12-27?11:49??Draw6\centerwidget.h

?????文件????????551??2017-12-28?01:26??Draw6\Draw6.pro

?????文件??????17979??2017-12-28?08:43??Draw6\Draw6.pro.user

?????文件????????655??2017-12-27?10:47??Draw6\ellipse.cpp

?????文件????????409??2017-12-27?10:47??Draw6\ellipse.h

?????文件????????591??2017-12-27?10:47??Draw6\line.cpp

?????文件????????396??2017-12-27?10:19??Draw6\line.h

?????文件????????238??2017-12-27?09:05??Draw6\main.cpp

?????文件???????6397??2017-12-27?20:05??Draw6\mainwindow.cpp

?????文件????????983??2017-12-27?11:32??Draw6\mainwindow.h

?????文件??????15318??2017-12-28?00:55??Draw6\Q7XRX7XOK）BVG%6J）HV7EGE.png

?????文件????????670??2017-12-27?10:47??Draw6\rectangle.cpp

?????文件????????419??2017-12-27?10:47??Draw6\rectangle.h

?????文件????????165??2017-12-27?10:19??Draw6\shape.cpp

?????文件????????336??2017-12-27?10:19??Draw6\shape.h

?????目錄??????????0??2017-12-28?08:43??Draw6

-----------?---------??----------?-----??----

????????????????53086????????????????????17