更新文档
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@ -4,7 +4,7 @@
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2. **视频主页:[https://space.bilibili.com/687803542](https://space.bilibili.com/687803542)**
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3. **网店地址:[https://shop244026315.taobao.com](https://shop244026315.taobao.com)**
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4. **联系方式:QQ(517216493)微信(feiyangqingyun)推荐加微信。**
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5. **公 众 号:Qt实战(本人)/Qt教程(民间)/Qt软件(官方)**
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5. **公 众 号:Qt实战/Qt入门和进阶/Qt教程/Qt软件**
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6. **版本支持:所有项目已经全部支持Qt4/5/6所有版本以及后续版本。**
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7. 监控作品体验:[https://pan.baidu.com/s/1d7TH_GEYl5nOecuNlWJJ7g](https://pan.baidu.com/s/1d7TH_GEYl5nOecuNlWJJ7g) 提取码:01jf
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8. 其他作品体验:[https://pan.baidu.com/s/1ZxG-oyUKe286LPMPxOrO2A](https://pan.baidu.com/s/1ZxG-oyUKe286LPMPxOrO2A) 提取码:o05q
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@ -1,11 +1,11 @@
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#include "imagecropperdemo.h"
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#include "imagecropperdemo.h"
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#include <QFormLayout>
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#include <QColorDialog>
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#include <QVBoxLayout>
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#include <QFileDialog>
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#include <QMessageBox>
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ImageCropperDemo::ImageCropperDemo(QWidget* parent) :
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ImageCropperDemo::ImageCropperDemo(QWidget *parent) :
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QDialog(parent)
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{
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setupLayout();
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@ -16,7 +16,8 @@ ImageCropperDemo::ImageCropperDemo(QWidget* parent) :
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}
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void ImageCropperDemo::setupLayout() {
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void ImageCropperDemo::setupLayout()
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{
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imgCropperLabel = new ImageCropperLabel(600, 500, this);
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imgCropperLabel->setFrameStyle(1);
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@ -27,19 +28,19 @@ void ImageCropperDemo::setupLayout() {
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editOriginalImagePath = new QLineEdit(this);
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btnChooseOriginalImagePath = new QPushButton(this);
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QHBoxLayout* hOriginalImagePathLayout = new QHBoxLayout();
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QHBoxLayout *hOriginalImagePathLayout = new QHBoxLayout();
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hOriginalImagePathLayout->addWidget(editOriginalImagePath);
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hOriginalImagePathLayout->addWidget(btnChooseOriginalImagePath);
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editCropperFixedWidth = new QLineEdit(this);
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editCropperFixedHeight = new QLineEdit(this);
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QHBoxLayout* hCropperFixedSizeLayout = new QHBoxLayout();
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QHBoxLayout *hCropperFixedSizeLayout = new QHBoxLayout();
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hCropperFixedSizeLayout->addWidget(editCropperFixedWidth);
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hCropperFixedSizeLayout->addWidget(editCropperFixedHeight);
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editCropperMinWidth = new QLineEdit("8", this);
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editCropperMinHeight = new QLineEdit("8", this);
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QHBoxLayout* hCropperMinSizeLayout = new QHBoxLayout();
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QHBoxLayout *hCropperMinSizeLayout = new QHBoxLayout();
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hCropperMinSizeLayout->addWidget(editCropperMinWidth);
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hCropperMinSizeLayout->addWidget(editCropperMinHeight);
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@ -52,17 +53,17 @@ void ImageCropperDemo::setupLayout() {
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labelRectBorderColor = new QLabel(this);
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btnChooseRectBorderCorlor = new QPushButton(this);
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QHBoxLayout* hRectBorderColorLayout = new QHBoxLayout();
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QHBoxLayout *hRectBorderColorLayout = new QHBoxLayout();
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hRectBorderColorLayout->addWidget(labelRectBorderColor);
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hRectBorderColorLayout->addWidget(btnChooseRectBorderCorlor);
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labelDragSquareColor = new QLabel(this);
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btnChooseDragSquareColor = new QPushButton(this);
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QHBoxLayout* hDragSquareColorLayout = new QHBoxLayout();
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QHBoxLayout *hDragSquareColorLayout = new QHBoxLayout();
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hDragSquareColorLayout->addWidget(labelDragSquareColor);
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hDragSquareColorLayout->addWidget(btnChooseDragSquareColor);
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QFormLayout* formLayout1 = new QFormLayout();
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QFormLayout *formLayout1 = new QFormLayout();
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formLayout1->addRow(new QLabel("Preview:"), labelPreviewImage);
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formLayout1->addRow(new QLabel("OriginalImage:", this), hOriginalImagePathLayout);
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formLayout1->addRow(new QLabel("OutputShape:", this), comboOutputShape);
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@ -70,29 +71,29 @@ void ImageCropperDemo::setupLayout() {
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formLayout1->addRow(new QLabel("FixedSize:", this), hCropperFixedSizeLayout);
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formLayout1->addRow(new QLabel("MinimumSize:", this), hCropperMinSizeLayout);
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QFormLayout* formLayout2 = new QFormLayout();
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QFormLayout *formLayout2 = new QFormLayout();
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formLayout2->addRow(new QLabel("EnableOpacity:", this), checkEnableOpacity);
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formLayout2->addRow(new QLabel("Opacity:", this), sliderOpacity);
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QFormLayout* formLayout3 = new QFormLayout();
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QFormLayout *formLayout3 = new QFormLayout();
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formLayout3->addRow(new QLabel("ShowDragSquare:", this), checkShowDragSquare);
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formLayout3->addRow(new QLabel("DragSquareEdge:", this), editDragSquareEdge);
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formLayout3->addRow(new QLabel("DragSquareColor:", this), hDragSquareColorLayout);
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QFormLayout* formLayout4 = new QFormLayout();
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QFormLayout *formLayout4 = new QFormLayout();
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formLayout4->addRow(new QLabel("ShowRectBorder:", this), checkShowRectBorder);
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formLayout4->addRow(new QLabel("RectBorderColor:", this), hRectBorderColorLayout);
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btnSavePreview = new QPushButton("Save", this);
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btnQuit = new QPushButton("Quit", this);
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QHBoxLayout* btnLayout = new QHBoxLayout();
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QHBoxLayout *btnLayout = new QHBoxLayout();
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btnLayout->addStretch();
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btnLayout->addWidget(btnSavePreview);
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btnLayout->addStretch();
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btnLayout->addWidget(btnQuit);
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btnLayout->addStretch();
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QVBoxLayout* vLayout = new QVBoxLayout();
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QVBoxLayout *vLayout = new QVBoxLayout();
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vLayout->addLayout(formLayout1);
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vLayout->addStretch();
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vLayout->addLayout(formLayout2);
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@ -108,7 +109,8 @@ void ImageCropperDemo::setupLayout() {
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mainLayout->addLayout(vLayout);
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}
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void ImageCropperDemo::init() {
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void ImageCropperDemo::init()
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{
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imgCropperLabel->setRectCropper();
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editCropperFixedWidth->setEnabled(false);
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editCropperFixedHeight->setEnabled(false);
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@ -195,11 +197,13 @@ void ImageCropperDemo::init() {
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*
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*****************************************************************************/
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void ImageCropperDemo::onChooseOriginalImage() {
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void ImageCropperDemo::onChooseOriginalImage()
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{
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QString filename = QFileDialog::getOpenFileName(this, "Select a picture", "",
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"picture (*.jpg *.png *.bmp)");
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if (filename.isNull())
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if (filename.isNull()) {
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return;
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}
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QPixmap pixmap;
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if (!pixmap.load(filename)) {
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@ -214,16 +218,19 @@ void ImageCropperDemo::onChooseOriginalImage() {
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labelPreviewImage->setFrameStyle(0);
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}
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void ImageCropperDemo::onOutputShapeChanged(int idx) {
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void ImageCropperDemo::onOutputShapeChanged(int idx)
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{
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// Output: Rectangular
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if (idx == 0)
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if (idx == 0) {
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imgCropperLabel->setOutputShape(OutputShape::RECT);
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else
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} else {
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imgCropperLabel->setOutputShape(OutputShape::ELLIPSE);
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}
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onUpdatePreview();
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}
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void ImageCropperDemo::onCropperShapeChanged(int idx) {
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void ImageCropperDemo::onCropperShapeChanged(int idx)
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{
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switch (CropperShape(idx + 1)) {
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case CropperShape::RECT: {
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imgCropperLabel->setRectCropper();
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@ -302,25 +309,25 @@ void ImageCropperDemo::onCropperShapeChanged(int idx) {
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onUpdatePreview();
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}
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void ImageCropperDemo::onEnableOpacityChanged(int state) {
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void ImageCropperDemo::onEnableOpacityChanged(int state)
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{
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if (state == Qt::Checked) {
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sliderOpacity->setEnabled(true);
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imgCropperLabel->enableOpacity(true);
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}
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else {
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} else {
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sliderOpacity->setEnabled(false);
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imgCropperLabel->enableOpacity(false);
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}
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onShowDragSquareChanged(int state) {
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void ImageCropperDemo::onShowDragSquareChanged(int state)
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{
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if (state == Qt::Checked) {
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editDragSquareEdge->setEnabled(true);
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btnChooseDragSquareColor->setEnabled(true);
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imgCropperLabel->setShowDragSquare(true);
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}
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else {
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} else {
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editDragSquareEdge->setEnabled(false);
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btnChooseDragSquareColor->setEnabled(false);
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imgCropperLabel->setShowDragSquare(false);
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@ -328,49 +335,56 @@ void ImageCropperDemo::onShowDragSquareChanged(int state) {
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onDragSquareEdgeChanged(QString edge) {
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void ImageCropperDemo::onDragSquareEdgeChanged(QString edge)
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{
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imgCropperLabel->setDragSquareEdge(edge.toInt());
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onOpacityChanged(int val) {
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void ImageCropperDemo::onOpacityChanged(int val)
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{
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imgCropperLabel->setOpacity(val / 100.0);
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onFixedWidthChanged(QString width) {
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void ImageCropperDemo::onFixedWidthChanged(QString width)
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{
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imgCropperLabel->setCropperFixedWidth(width.toInt());
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onFixedHeightChanged(QString height) {
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void ImageCropperDemo::onFixedHeightChanged(QString height)
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{
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imgCropperLabel->setCropperFixedHeight(height.toInt());
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onMinWidthChanged(QString width) {
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void ImageCropperDemo::onMinWidthChanged(QString width)
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{
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imgCropperLabel->setCropperMinimumWidth(width.toInt());
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onMinHeightChanged(QString height) {
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void ImageCropperDemo::onMinHeightChanged(QString height)
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{
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imgCropperLabel->setMinimumHeight(height.toInt());
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onShowRectBorder(int state) {
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void ImageCropperDemo::onShowRectBorder(int state)
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{
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if (state == Qt::Checked) {
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btnChooseRectBorderCorlor->setEnabled(true);
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imgCropperLabel->setShowRectBorder(true);
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}
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else {
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} else {
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btnChooseRectBorderCorlor->setEnabled(false);
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imgCropperLabel->setShowRectBorder(false);
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}
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imgCropperLabel->update();
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}
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void ImageCropperDemo::onChooseRectBorderColor() {
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void ImageCropperDemo::onChooseRectBorderColor()
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{
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QColor color = QColorDialog::getColor(imgCropperLabel->getBorderPen().color(), this);
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if (color.isValid()) {
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setLabelColor(labelRectBorderColor, color);
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}
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}
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void ImageCropperDemo::onChooseDragSquareColor() {
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void ImageCropperDemo::onChooseDragSquareColor()
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{
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QColor color = QColorDialog::getColor(Qt::white, this);
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if (color.isValid()) {
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setLabelColor(labelDragSquareColor, color);
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}
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}
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void ImageCropperDemo::onUpdatePreview() {
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void ImageCropperDemo::onUpdatePreview()
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{
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QPixmap preview = imgCropperLabel->getCroppedImage();
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preview = preview.scaled(labelPreviewImage->width(), labelPreviewImage->height(),
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Qt::KeepAspectRatio, Qt::SmoothTransformation);
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labelPreviewImage->setPixmap(preview);
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}
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void ImageCropperDemo::onSaveCroppedImage() {
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const QPixmap* pixmap = labelPreviewImage->pixmap();
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if (!pixmap) {
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void ImageCropperDemo::onSaveCroppedImage()
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{
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if (!labelPreviewImage->pixmap()) {
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QMessageBox::information(this, "Error", "There is no cropped image to save.", QMessageBox::Ok);
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return ;
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}
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QString filename = QFileDialog::getSaveFileName(this, "Save cropped image", "", "picture (*.png)");
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if (!filename.isNull()) {
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if (imgCropperLabel->getCroppedImage().save(filename, "PNG"))
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if (imgCropperLabel->getCroppedImage().save(filename, "PNG")) {
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QMessageBox::information(this, "Prompt", "Saved successfully", QMessageBox::Ok);
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else
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} else {
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QMessageBox::information(this, "Error", "Save image failed!", QMessageBox::Ok);
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}
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}
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}
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