基于Qt實現(xiàn)一個圖片對比選擇瀏覽器
更新時間：2024年04月17日 10:01:05 作者：Beyond欣
這篇文章主要為大家詳細(xì)介紹了如何基于Qt實現(xiàn)一個圖片對比選擇瀏覽器,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下
需求：根據(jù)右側(cè)模板，在左側(cè)選擇比較接近的圖片。
利用QPropertyAnimation、QParallelAnimationGroup實現(xiàn)圖片切換效果。場景用QGraphicsView搭建。
實現(xiàn)代碼
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() {
//場景
m_scene_ = new QGraphicsScene(QRect(0, 0, 800, 800), this);
//圖片信息
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" }
};
//場景中添加圖片元素
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);
//視圖
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);
//動畫: 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("選擇本層");
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("選擇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_) {
// 拷貝完成
if (!script_dcm_sort_->Get_result_()) {
return;
}
script_dcm_sort_->Reinitialize();
this->LoadPngs();
}
}
//---------------------------------------------------------------------
void AspectsSelect::Play() {
// 動畫
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
* 更新圖片顯示
*/
void AspectsSelect::UpdatePicture() {
// 更新圖片
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
* 打開文件
*/
void AspectsSelect::OpenDicomFile() {
// 選擇文件
QString filename = FileUtil::GetFileName("*");
// 拷貝文件到本地
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
* 讀取本地保存圖片
*/
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
* 確認(rèn)層槽函數(shù)
*/
void AspectsSelect::ConfirmTemplate() {
// 如果當(dāng)前層如果之前設(shè)置過其他模板，則清空。
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) {
//圖片信息
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() << "圖片路徑輸入錯誤，輸入數(shù)量：" << file_paths_.size();
return;
}
//場景
m_scene_ = new QGraphicsScene(
QRect(0, 0, size_width, size_height), this);
// 場景底部添加圖片元素
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();
});
}
// 場景中間添加元素
{
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()));
//視圖
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) {
// 場景底部標(biāo)簽修改
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() {
//上一張
if(0 == select_num_) {
select_num_ = 5;
} else {
select_num_--;
}
Play();
}
//---------------------------------------------------------------------
void ImageSceneView::Slot_RightBtnClicked() {
//下一張
if(template_num - 1 == select_num_) {
select_num_ = 0;
} else {
select_num_++;
}
Play();
}
//---------------------------------------------------------------------
void ImageSceneView::Play() {
// 場景底部元素修改
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);
}
}
// 場景中間元素修改
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_);
}
}到此這篇關(guān)于基于Qt實現(xiàn)一個圖片對比選擇瀏覽器的文章就介紹到這了,更多相關(guān)Qt圖片對比選擇瀏覽器內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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