100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
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#ifndef IMAGECROPPER_H
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#define IMAGECROPPER_H
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#include <QWidget>
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#include <QDialog>
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#include <QPainter>
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#include <QLabel>
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#include <QPixmap>
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#include <QString>
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#include <QMessageBox>
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#include <QHBoxLayout>
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#include <QVBoxLayout>
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#include <QPushButton>
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#include "imagecropperlabel.h"
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/*******************************************************
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* Loacl private class, which do image-cropping
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* Used in class ImageCropper
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*******************************************************/
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class ImageCropperDialogPrivate : public QDialog
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{
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Q_OBJECT
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public:
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ImageCropperDialogPrivate(const QPixmap &imageIn, QPixmap &outputImage,
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int windowWidth, int windowHeight,
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CropperShape shape, QSize cropperSize = QSize())
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: QDialog(0)
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, outputImage(outputImage)
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{
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this->setAttribute(Qt::WA_DeleteOnClose, true);
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this->setWindowTitle("Image Cropper");
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this->setMouseTracking(true);
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this->setModal(true);
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imageLabel = new ImageCropperLabel(windowWidth, windowHeight, this);
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imageLabel->setCropper(shape, cropperSize);
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imageLabel->setOutputShape(OutputShape::RECT);
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imageLabel->setOriginalImage(imageIn);
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imageLabel->enableOpacity(true);
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QHBoxLayout *btnLayout = new QHBoxLayout();
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btnOk = new QPushButton("OK", this);
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btnCancel = new QPushButton("Cancel", this);
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btnLayout->addStretch();
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btnLayout->addWidget(btnOk);
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btnLayout->addWidget(btnCancel);
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QVBoxLayout *mainLayout = new QVBoxLayout(this);
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mainLayout->addWidget(imageLabel);
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mainLayout->addLayout(btnLayout);
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connect(btnOk, &QPushButton::clicked, this, [this]() {
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this->outputImage = this->imageLabel->getCroppedImage();
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this->close();
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});
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connect(btnCancel, &QPushButton::clicked, this, [this]() {
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this->outputImage = QPixmap();
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this->close();
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});
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}
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private:
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ImageCropperLabel *imageLabel;
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QPushButton *btnOk;
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QPushButton *btnCancel;
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QPixmap &outputImage;
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};
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/*******************************************************************
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* class ImageCropperDialog
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* create a instane of class ImageCropperDialogPrivate
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* and get cropped image from the instance(after closing)
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********************************************************************/
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class ImageCropperDialog : QObject
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{
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public:
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static QPixmap getCroppedImage(const QString &filename, int windowWidth, int windowHeight,
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CropperShape cropperShape, QSize crooperSize = QSize())
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{
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QPixmap inputImage;
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QPixmap outputImage;
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if (!inputImage.load(filename)) {
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QMessageBox::critical(0, "Error", "Load image failed!", QMessageBox::Ok);
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return outputImage;
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}
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ImageCropperDialogPrivate *imageCropperDo =
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new ImageCropperDialogPrivate(inputImage, outputImage,
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windowWidth, windowHeight,
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cropperShape, crooperSize);
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imageCropperDo->exec();
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return outputImage;
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}
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};
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#endif // IMAGECROPPER_H
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