基于Qt实现一个图片对比选择浏览器
作者:Beyond欣
这篇文章主要为大家详细介绍了如何基于Qt实现一个图片对比选择浏览器,文中的示例代码讲解详细,感兴趣的小伙伴可以跟随小编一起学习一下
需求:根据右侧模板,在左侧选择比较接近的图片。
利用QPropertyAnimation、QParallelAnimationGroup实现图片切换效果。场景用QGraphicsView搭建。
实现代码
aspectsselectwidget.h
#ifndef ASPECTSSELECTWIDGET_H #define ASPECTSSELECTWIDGET_H #include <QWidget> #include <QtWidgets/QWidget> #include <QLabel> #include <QPushButton> #include <QPointer> #include <QtCore/QVariant> #include "view/imagesceneview.h" namespace Ui { class AspectsSelectWidget; } class QTimer; class QPropertyAnimation; class GraphicsPixmap; class QGraphicsScene; class QParallelAnimationGroup; class ScriptDcmsSort; class AspectsSelect : public QWidget { Q_OBJECT public: AspectsSelect(QWidget *parent = nullptr); ~AspectsSelect()override; public Q_SLOTS: void Slot_TemplateSelectChange(const qint32 &num); protected: virtual void resizeEvent(QResizeEvent *event) override; virtual void wheelEvent(QWheelEvent *event) override; private: void Initial(); void Play(); void NextPlay(); void LastPlay(); void UpdatePicture(); void OpenDicomFile(); void LoadPngs(); void ConfirmTemplate(); Q_SIGNALS: void Signal_ConfirmNumberOfLayers(const QStringList &mark); private Q_SLOTS: void Slot_BtnClicket(); void SlotRunFinished(); private: QGraphicsScene *m_scene_; QList<QMap<QString, QString>> m_imgmap_info_lst_; QList<GraphicsPixmap *> m_items_; QParallelAnimationGroup *m_group_; QMap<GraphicsPixmap *, QPropertyAnimation *> m_animation_map_; QMap<GraphicsPixmap *, QPropertyAnimation *> m_animations_map_; // bool is_animation_; qint32 current_center_num_; QList<qint32> select_idlst_; QList<QPixmap> image_lists_; QStringList iamge_location_lists_; // QLabel *lab_select_num_; QPushButton *btn_confirm_; QPushButton *btn_load_; QPointer<ScriptDcmsSort> script_dcm_sort_; QUICK_INITIAL_VAR(template_select_num_, qint32) }; class AspectsSelectWidget : public QWidget { Q_OBJECT public: explicit AspectsSelectWidget(QWidget *parent = nullptr); ~AspectsSelectWidget(); private: void Initial(); private: Ui::AspectsSelectWidget *ui; QPointer<AspectsSelect> select_view_; QPointer<ImageSceneView> template_view_; }; #endif // ASPECTSSELECTWIDGET_H
imagesceneview.h
#include "aspectsselectwidget.h" #include "ui_aspectsselectwidget.h" #include <QParallelAnimationGroup> #include <QPropertyAnimation> #include <QDebug> #include <QTimer> #include <QFileDialog> #include <QVBoxLayout> #include <QGraphicsView> #include <ArteryflowUtils> #include "script/scriptdcmssort.h" //--------------------------------------------------------------------- AspectsSelect::AspectsSelect(QWidget *parent) : QWidget(parent), is_animation_(false), current_center_num_(0), select_idlst_({-1, -1, -1, -1, -1, -1}) { this->Initial(); } AspectsSelect::~AspectsSelect() { } //--------------------------------------------------------------------- void AspectsSelect::Slot_TemplateSelectChange(const qint32 &num) { this->Set_template_select_num_(num); } //--------------------------------------------------------------------- void AspectsSelect::resizeEvent(QResizeEvent *event) { this->lab_select_num_->move(40, 760); this->btn_confirm_->move(650, 40); this->btn_load_->move(550, 40); QWidget::resizeEvent(event); } void AspectsSelect::wheelEvent(QWheelEvent *event) { if(image_lists_.count() < 10) { return; } if(!is_animation_) { if (event->delta() > 0) { this->LastPlay(); } else { this->NextPlay(); } } } //--------------------------------------------------------------------- void AspectsSelect::Initial() { //场景 m_scene_ = new QGraphicsScene(QRect(0, 0, 800, 800), this); //图片信息 m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "1" }, { "width", "90" }, { "height", "90" }, { "top", "25" }, { "left", "15" }, { "opacity", "0.5" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "100" }, { "height", "100" }, { "top", "20" }, { "left", "10" }, { "opacity", "0.6" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "3" }, { "width", "110" }, { "height", "110" }, { "top", "15" }, { "left", "90" }, { "opacity", "0.7" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "4" }, { "width", "120" }, { "height", "120" }, { "top", "10" }, { "left", "170" }, { "opacity", "0.8" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "5" }, { "width", "512" }, { "height", "512" }, { "top", "144" }, { "left", "144" }, { "opacity", "1" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "4" }, { "width", "120" }, { "height", "120" }, { "top", "670" }, { "left", "510" }, { "opacity", "0.8" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "3" }, { "width", "110" }, { "height", "110" }, { "top", "675" }, { "left", "600" }, { "opacity", "0.7" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "100" }, { "height", "100" }, { "top", "680" }, { "left", "690" }, { "opacity", "0.6" } }; m_imgmap_info_lst_ << QMap<QString, QString> { { "zIndex", "1" }, { "width", "90" }, { "height", "90" }, { "top", "685" }, { "left", "695" }, { "opacity", "0.5" } }; //场景中添加图片元素 qint32 index = 0; for(qint32 i = current_center_num_ - 4; i <= current_center_num_ + 4; i++) { auto imageInfoMap = m_imgmap_info_lst_[index]; index++; GraphicsPixmap *item = new GraphicsPixmap(); item->setPixmap(QPixmap("")); item->setPixmapSize( QSize(imageInfoMap["width"].toInt(), imageInfoMap["height"].toInt())); item->setItemOffset(QPointF( imageInfoMap["left"].toInt(), imageInfoMap["top"].toInt() )); item->setZValue(imageInfoMap["zIndex"].toInt()); item->setOpacity(imageInfoMap["opacity"].toDouble()); m_items_ << item; m_scene_->addItem(item); } //left button GraphicsPixmap *leftBtn = new GraphicsPixmap(); leftBtn->setObjectName("last"); leftBtn->setCursor(QCursor(Qt::PointingHandCursor)); leftBtn->setPixmap(QPixmap(":/Stroke/Registration/template_next.png")); leftBtn->setItemOffset(QPointF(12, 400)); leftBtn->setZValue(5); m_scene_->addItem(leftBtn); connect(leftBtn, &GraphicsPixmap::Signale_Clicked, this, &AspectsSelect::Slot_BtnClicket); //right button GraphicsPixmap *rightBtn = new GraphicsPixmap(); rightBtn->setObjectName("next"); rightBtn->setCursor(QCursor(Qt::PointingHandCursor)); rightBtn->setPixmap(QPixmap(":/Stroke/Registration/template_last.png")); rightBtn->setItemOffset(QPointF(764, 400)); rightBtn->setZValue(5); m_scene_->addItem(rightBtn); connect(rightBtn, &GraphicsPixmap::Signale_Clicked, this, &AspectsSelect::Slot_BtnClicket); //视图 GraphicsView *view = new GraphicsView(m_scene_); view->setFrameShape(QFrame::NoFrame); view->setParent(this); view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); view->setBackgroundBrush(QColor(46, 46, 46)); view->setCacheMode(QGraphicsView::CacheBackground); view->setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform); //动画: 大小,位置 m_group_ = new QParallelAnimationGroup; for (int i = 0; i < m_items_.count(); ++i) { QPropertyAnimation *anim = new QPropertyAnimation(m_items_[i], "itemoffset"); QPropertyAnimation *anims = new QPropertyAnimation(m_items_[i], "itemsize"); m_animation_map_.insert(m_items_[i], anim); m_animations_map_.insert(m_items_[i], anims); anim->setDuration(1000); anims->setDuration(1000); anim->setEasingCurve(QEasingCurve::OutQuad); anims->setEasingCurve(QEasingCurve::OutQuad); m_group_->addAnimation(anim); m_group_->addAnimation(anims); } connect(m_group_, &QParallelAnimationGroup::finished, [this]() { for (int index = 0; index < m_imgmap_info_lst_.size(); index++) { auto item = m_items_[index]; item->Set_show_mark_(true); } is_animation_ = false; }); this->lab_select_num_ = new QLabel(this); this->lab_select_num_->setFixedSize(60, 14); this->lab_select_num_->setText( QString("%1/%2").arg(current_center_num_).arg(0)); this->btn_confirm_ = new QPushButton(this); this->btn_confirm_->setText("选择本层"); this->btn_confirm_->setFixedSize(90, 22); connect(this->btn_confirm_, &QPushButton::clicked, this, &AspectsSelect::Slot_BtnClicket); this->btn_load_ = new QPushButton(this); this->btn_load_->setText("选择dcm文件"); this->btn_load_->setFixedSize(90, 22); connect(this->btn_load_, &QPushButton::clicked, this, &AspectsSelect::Slot_BtnClicket); // script_dcm_sort_ = new ScriptDcmsSort(); connect(script_dcm_sort_, &ScriptDcmsSort::finished, this, &AspectsSelect::SlotRunFinished); // QVBoxLayout *layout = new QVBoxLayout(this); layout->addWidget(view); this->template_select_num_ = 0; } //--------------------------------------------------------------------- void AspectsSelect::Slot_BtnClicket() { if(image_lists_.count() < 10) { if(QObject::sender() == this->btn_load_) { this->OpenDicomFile(); } } else { if(QObject::sender() == this->btn_confirm_) { this->ConfirmTemplate(); } else if(QObject::sender()->objectName() == "next") { this->NextPlay(); } else if(QObject::sender()->objectName() == "last") { this->LastPlay(); } } } //--------------------------------------------------------------------- void AspectsSelect::SlotRunFinished() { if(QObject::sender() == script_dcm_sort_) { // 拷贝完成 if (!script_dcm_sort_->Get_result_()) { return; } script_dcm_sort_->Reinitialize(); this->LoadPngs(); } } //--------------------------------------------------------------------- void AspectsSelect::Play() { // 动画 for (int index = 0; index < m_imgmap_info_lst_.size(); index++) { auto item = m_items_[index]; item->Set_show_mark_(false); QPropertyAnimation *anim = m_animation_map_.value(item); QPropertyAnimation *anims = m_animations_map_.value(item); auto imageInfoMap = m_imgmap_info_lst_[index]; item->setZValue(imageInfoMap["zIndex"].toInt()); item->setOpacity(imageInfoMap["opacity"].toDouble()); QPointF pointf(imageInfoMap["left"].toInt(), imageInfoMap["top"].toInt() ); anim->setStartValue(item->itemoffset()); anims->setStartValue(item->pixsize()); anim->setEndValue(pointf); anims->setEndValue( QSize( imageInfoMap["width"].toInt(), imageInfoMap["height"].toInt())); } is_animation_ = true; } //--------------------------------------------------------------------- void AspectsSelect::NextPlay() { m_group_->stop(); if(image_lists_.count() - 1 == current_center_num_) { current_center_num_ = 0; } else { current_center_num_++; } auto firstItem = m_items_.takeAt(0); m_items_ << firstItem; Play(); this->UpdatePicture(); m_group_->start(); } //--------------------------------------------------------------------- void AspectsSelect::LastPlay() { m_group_->stop(); if(0 == current_center_num_) { current_center_num_ = image_lists_.count() - 1; } else { current_center_num_--; } auto lastItem = m_items_.takeAt(m_items_.size() - 1); m_items_.prepend(lastItem); Play(); this->UpdatePicture(); m_group_->start(); } //--------------------------------------------------------------------- /** * @brief AspectsSelect::UpdatePicture * 更新图片显示 */ void AspectsSelect::UpdatePicture() { // 更新图片 qint32 index = 0; for(qint32 i = current_center_num_ - 4; i <= current_center_num_ + 4; i++) { qint32 tmp_id = i; if(tmp_id < 0) { tmp_id = image_lists_.size() + i ; } else if(tmp_id >= image_lists_.size()) { tmp_id = i - image_lists_.size(); } auto item = m_items_[index]; auto imageInfoMap = m_imgmap_info_lst_[index]; item->setPixmap(image_lists_.at(tmp_id)); QString mark = "高度:" + iamge_location_lists_.at(tmp_id) + "mm"; item->Set_mark_left_top_(mark); item->setPixmapSize( QSize(imageInfoMap["width"].toInt(), imageInfoMap["height"].toInt())); if(select_idlst_.contains(tmp_id)) { item->SetLeftDownMark(select_idlst_.indexOf(tmp_id)); } else { item->SetLeftDownMark(-1); } index++; } lab_select_num_->setText(QString("%1/%2").arg(current_center_num_) .arg(image_lists_.size() - 1)); } //--------------------------------------------------------------------- /** * @brief AspectsSelect::OpenDicomFile * 打开文件 */ void AspectsSelect::OpenDicomFile() { // 选择文件 QString filename = FileUtil::GetFileName("*"); // 拷贝文件到本地 script_dcm_sort_-> Set_session_file_("./session/" + GlobalVar::current_sessing_.GetSessionFileName()); script_dcm_sort_->Set_input_path_(filename); script_dcm_sort_->Set_m_mode_(ScriptDcmsSort::AspectsFile); script_dcm_sort_->start(); } //--------------------------------------------------------------------- /** * @brief AspectsSelect::LoadPngs * 读取本地保存图片 */ void AspectsSelect::LoadPngs() { image_lists_.clear(); iamge_location_lists_.clear(); QString path = "./session/" + GlobalVar::current_sessing_.GetSessionFileName() + "/DicomData/"; QDir dir(path); dir.setNameFilters(QStringList() << "*.png"); for(quint32 i = 0; i < dir.count(); i++) { qint32 num = static_cast<qint32>(i); image_lists_ << QPixmap(path + dir[num]); iamge_location_lists_ << dir[num].remove(".png"); } this->current_center_num_ = 0; this->UpdatePicture(); } //--------------------------------------------------------------------- /** * @brief AspectsSelect::ConfirmTemplate * 确认层槽函数 */ void AspectsSelect::ConfirmTemplate() { // 如果当前层如果之前设置过其他模板,则清空。 for(qint32 i = 0; i < select_idlst_.count(); ++i) { if(select_idlst_.at(i) == this->current_center_num_) { select_idlst_[i] = -1; } } select_idlst_[this->template_select_num_] = this->current_center_num_; this->UpdatePicture(); QStringList template_mark; for(qint32 i = 0; i < select_idlst_.count(); ++i) { if(-1 == select_idlst_.at(i)) { template_mark << ""; } else { QString mark = "" + iamge_location_lists_.at(select_idlst_.at(i)) ; template_mark << mark; } } emit Signal_ConfirmNumberOfLayers(template_mark); } //--------------------------------------------------------------------- //--------------------------------------------------------------------- AspectsSelectWidget::AspectsSelectWidget(QWidget *parent) : QWidget(parent), ui(new Ui::AspectsSelectWidget) { ui->setupUi(this); this->Initial(); } //--------------------------------------------------------------------- AspectsSelectWidget::~AspectsSelectWidget() { delete ui; } //--------------------------------------------------------------------- void AspectsSelectWidget::Initial() { select_view_ = new AspectsSelect(); template_view_ = new ImageSceneView(); QStringList template_file_lists; template_file_lists << ":/Stroke/Registration/template1.png"; template_file_lists << ":/Stroke/Registration/template2.png"; template_file_lists << ":/Stroke/Registration/template3.png"; template_file_lists << ":/Stroke/Registration/template4.png"; template_file_lists << ":/Stroke/Registration/template5.png"; template_file_lists << ":/Stroke/Registration/template6.png"; template_file_lists << ":/Stroke/Registration/template_next.png"; template_file_lists << ":/Stroke/Registration/template_last.png"; template_view_->Set_file_paths_(template_file_lists); template_view_->InitSceneWidget(); ui->layout_select->addWidget(select_view_); ui->layout_view->addWidget(template_view_); connect(template_view_, &ImageSceneView::Signal_TemplateSelectChange, select_view_, &AspectsSelect::Slot_TemplateSelectChange); connect(select_view_, &AspectsSelect::Signal_ConfirmNumberOfLayers, template_view_, &ImageSceneView::Slot_ConfirmNumberOfLayers); } ```cpp #ifndef IMAGESCENEVIEW_H #define IMAGESCENEVIEW_H #include <QtWidgets/QWidget> #include <QGraphicsObject> #include <QPixmap> #include <QGraphicsView> #include <QuickEvent> class QTimer; class QPropertyAnimation; class GraphicsPixmap; class QGraphicsScene; class QParallelAnimationGroup; class GraphicsView : public QGraphicsView { Q_OBJECT public: GraphicsView(QGraphicsScene *scene); ~GraphicsView() override; protected: void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE; }; class ImageSceneView : public QWidget { Q_OBJECT public: ImageSceneView(QWidget *parent = nullptr); ~ImageSceneView() override; void InitSceneWidget(); public Q_SLOTS: void Slot_ConfirmNumberOfLayers(const QStringList &mark); private: void Play(); private Q_SLOTS: void Slot_LeftBtnClicked(); void Slot_RightBtnClicked(); Q_SIGNALS: void Signal_TemplateSelectChange(const qint32 &num); private: QGraphicsScene *m_scene_; QList<QMap<QString, QString>> img_map_infolst_; QList<GraphicsPixmap *> m_items_; QUICK_INITIAL_VAR(file_paths_, QStringList) QUICK_INITIAL_VAR(select_num_, qint32) }; class GraphicsPixmap : public QGraphicsObject { Q_OBJECT Q_PROPERTY(QPointF itemoffset READ itemoffset WRITE setItemOffset) Q_PROPERTY(QSize itemsize READ pixsize WRITE setPixmapSize) public: GraphicsPixmap(); public: QRectF boundingRect() const Q_DECL_OVERRIDE; void setItemOffset(QPointF ponit); QPointF itemoffset(); QSize pixsize(); void setPixmap(const QPixmap &pixmap); void setPixmapSize(QSize size); void SetLeftDownMark(const qint32 &id); Q_SIGNALS: void Signale_Clicked(); void Signale_DoubleClicked(); private: void mousePressEvent(QGraphicsSceneMouseEvent *event) Q_DECL_OVERRIDE; void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) Q_DECL_OVERRIDE; void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) Q_DECL_OVERRIDE; private: QUICK_INITIAL_VAR(mark_center_, QString) QUICK_INITIAL_VAR(show_mark_, bool) QUICK_INITIAL_VAR(mark_left_top_, QString) QPixmap pix; QPointF offset; QSize pixSize; QString mark_left_down_; }; #endif // IMAGESCENEVIEW_H
#include "imagesceneview.h" #include <QParallelAnimationGroup> #include <QPropertyAnimation> #include <QDebug> #include <QTimer> #include <QGraphicsSceneMouseEvent> #include <QPainter> #include <QCursor> #include <QVBoxLayout> const qint32 size_width = 800; const qint32 size_height = 800; const qint32 btn_x = 21; const qint32 interval_x = 12; const qint32 template_num = 6; //--------------------------------------------------------------------- ImageSceneView::ImageSceneView(QWidget *parent) : QWidget(parent), select_num_(0) { //图片信息 img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "20" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "149" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "278" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "407" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "536" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "2" }, { "width", "115" }, { "height", "115" }, { "top", "671" }, { "left", "665" }, { "opacity", "0.5" } }; img_map_infolst_ << QMap<QString, QString> { { "zIndex", "4" }, { "width", "512" }, { "height", "512" }, { "top", "90" }, { "left", "144" }, { "opacity", "1" } }; } //--------------------------------------------------------------------- ImageSceneView::~ImageSceneView() { } //--------------------------------------------------------------------- void ImageSceneView::InitSceneWidget() { if(template_num + 2 != file_paths_.size()) { qDebug() << "图片路径输入错误,输入数量:" << file_paths_.size(); return; } //场景 m_scene_ = new QGraphicsScene( QRect(0, 0, size_width, size_height), this); // 场景底部添加图片元素 for (int index = 0; index < template_num; index++) { auto imageInfoMap = img_map_infolst_[index]; QPixmap pixmap = QPixmap(file_paths_.at(index)); GraphicsPixmap *item = new GraphicsPixmap(); item->setPixmap(pixmap); item->setPixmapSize(QSize(4 + imageInfoMap["width"].toInt(), 4 + imageInfoMap["height"].toInt())); item->setItemOffset(QPointF(imageInfoMap["left"].toInt(), imageInfoMap["top"].toInt())); item->setZValue(imageInfoMap["zIndex"].toInt()); if(select_num_ == index) { item->setOpacity(1); } else { item->setOpacity(imageInfoMap["opacity"].toDouble()); } m_items_ << item; m_scene_->addItem(item); connect(item, &GraphicsPixmap::Signale_DoubleClicked, this, [ = ] { select_num_ = index; Play(); }); } // 场景中间添加元素 { auto map = img_map_infolst_[6]; QPixmap pixmap = QPixmap(file_paths_.at(select_num_)); GraphicsPixmap *item = new GraphicsPixmap(); item->setPixmap(pixmap); item->setPixmapSize(QSize(map["width"].toInt(), map["height"].toInt())); item->setItemOffset(QPointF(map["left"].toInt(), map["top"].toInt())); item->setZValue(map["zIndex"].toInt()); item->setOpacity(map["opacity"].toDouble()); m_items_ << item; m_scene_->addItem(item); } //left button GraphicsPixmap *leftBtn = new GraphicsPixmap(); leftBtn->setCursor(QCursor(Qt::PointingHandCursor)); leftBtn->setPixmap(QPixmap(file_paths_.at(template_num))); leftBtn->setItemOffset(QPointF(interval_x, size_height / 2)); leftBtn->setZValue(5); m_scene_->addItem(leftBtn); connect(leftBtn, SIGNAL(Signale_Clicked()), this, SLOT(Slot_LeftBtnClicked())); //right button GraphicsPixmap *rightBtn = new GraphicsPixmap(); rightBtn->setCursor(QCursor(Qt::PointingHandCursor)); rightBtn->setPixmap(QPixmap(file_paths_.at(template_num + 1))); rightBtn->setItemOffset(QPointF(size_width - interval_x - btn_x, size_height / 2)); rightBtn->setZValue(5); m_scene_->addItem(rightBtn); connect(rightBtn, SIGNAL(Signale_Clicked()), this, SLOT(Slot_RightBtnClicked())); //视图 GraphicsView *view = new GraphicsView(m_scene_); view->setFrameShape(QFrame::NoFrame); view->setParent(this); view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); view->setBackgroundBrush(QColor(46, 46, 46)); view->setCacheMode(QGraphicsView::CacheBackground); view->setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform); QVBoxLayout *layout = new QVBoxLayout(this); layout->addWidget(view); } //--------------------------------------------------------------------- void ImageSceneView::Slot_ConfirmNumberOfLayers( const QStringList &mark) { // 场景底部标签修改 for (int index = 0; index < template_num; index++) { auto item = m_items_[index]; item->Set_mark_center_(mark.at(index)); item->update(); } } //--------------------------------------------------------------------- void ImageSceneView::Slot_LeftBtnClicked() { //上一张 if(0 == select_num_) { select_num_ = 5; } else { select_num_--; } Play(); } //--------------------------------------------------------------------- void ImageSceneView::Slot_RightBtnClicked() { //下一张 if(template_num - 1 == select_num_) { select_num_ = 0; } else { select_num_++; } Play(); } //--------------------------------------------------------------------- void ImageSceneView::Play() { // 场景底部元素修改 for (int index = 0; index < template_num; index++) { auto item = m_items_[index]; if(select_num_ == index) { item->setOpacity(1); } else { item->setOpacity(0.5); } } // 场景中间元素修改 m_items_[6]->setPixmap(file_paths_.at(select_num_)); // emit Signal_TemplateSelectChange(select_num_); } //--------------------------------------------------------------------- GraphicsView::GraphicsView(QGraphicsScene *scene) : QGraphicsView(scene) { } //--------------------------------------------------------------------- GraphicsView::~GraphicsView() { } //--------------------------------------------------------------------- void GraphicsView::resizeEvent(QResizeEvent *event) { QGraphicsView::resizeEvent(event); fitInView(sceneRect(), Qt::KeepAspectRatio); } //--------------------------------------------------------------------- GraphicsPixmap::GraphicsPixmap() : QGraphicsObject() { this->mark_left_down_ = ""; this->mark_left_top_ = ""; this->show_mark_ = true; setCacheMode(DeviceCoordinateCache); } //--------------------------------------------------------------------- void GraphicsPixmap::mousePressEvent(QGraphicsSceneMouseEvent *event) { if (event->button() == Qt::LeftButton) { emit Signale_Clicked(); } QGraphicsObject::mousePressEvent(event); } void GraphicsPixmap::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) { if (event->button() == Qt::LeftButton) { emit Signale_Clicked(); emit Signale_DoubleClicked(); } } //--------------------------------------------------------------------- void GraphicsPixmap::setItemOffset(QPointF ponit) { prepareGeometryChange(); offset = ponit; this->update(); } //--------------------------------------------------------------------- QPointF GraphicsPixmap::itemoffset() { return offset; } //--------------------------------------------------------------------- void GraphicsPixmap::setPixmap(const QPixmap &pixmap) { pixSize = pixmap.size(); pix = pixmap; this->update(); } //--------------------------------------------------------------------- void GraphicsPixmap::setPixmapSize(QSize size) { pixSize = size; } //--------------------------------------------------------------------- void GraphicsPixmap::SetLeftDownMark(const qint32 &id) { switch (id) { case -1: mark_left_down_ = ""; break; case 0: mark_left_down_ = "模板一"; break; case 1: mark_left_down_ = "模板二"; break; case 2: mark_left_down_ = "模板三"; break; case 3: mark_left_down_ = "模板四"; break; case 4: mark_left_down_ = "模板五"; break; case 5: mark_left_down_ = "模板六"; break; default: break; } this->update(); } //--------------------------------------------------------------------- QSize GraphicsPixmap::pixsize() { return pixSize; } //--------------------------------------------------------------------- QRectF GraphicsPixmap::boundingRect() const { return QRectF(offset, pix.size() / pix.devicePixelRatio()); } //--------------------------------------------------------------------- void GraphicsPixmap::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) { painter->setRenderHint(QPainter::SmoothPixmapTransform, true); painter->drawPixmap(offset, pix.scaled(pixSize, Qt::KeepAspectRatio, Qt::SmoothTransformation)); if(show_mark_) { QFont font; font.setPointSize(pixSize.width() / 15 > 5 ? pixSize.width() / 15 : 5); painter->setFont(font); painter->setPen(QColor(255, 143, 36)); painter->drawText(offset + QPoint(pixSize.width() / 10, pixSize.width() * 9 / 10), mark_left_down_); font.setPointSize(pixSize.width() / 20 > 5 ? pixSize.width() / 20 : 5); painter->setFont(font); painter->setPen(QColor(168, 143, 110)); painter->drawText(offset + QPoint(pixSize.width() / 10, pixSize.width() / 10), mark_left_top_); font.setPointSize(20); painter->setFont(font); painter->setPen(QColor(255, 143, 36)); painter->drawText(offset + QPoint(pixSize.width() / 10, pixSize.width() * 4 / 10), mark_center_); } }
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