2019-11-10 00:12:44 +01:00
|
|
|
|
/*****************************************************************************
|
|
|
|
|
* ImageCropper Qt Widget for cropping images
|
|
|
|
|
* Copyright (C) 2013 Dimka Novikov, to@dimkanovikov.pro
|
2020-05-21 14:50:37 +02:00
|
|
|
|
* Copyright (C) 2020 Syping
|
2019-11-10 00:12:44 +01:00
|
|
|
|
*
|
|
|
|
|
* This library is free software; you can redistribute it and/or
|
|
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
* License as published by the Free Software Foundation; either
|
|
|
|
|
* version 3 of the License, or any later version.
|
|
|
|
|
*
|
|
|
|
|
* This library is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
|
* Lesser General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
#include "imagecropper.h"
|
2020-05-21 14:50:37 +02:00
|
|
|
|
#include "AppEnv.h"
|
2019-11-10 00:12:44 +01:00
|
|
|
|
|
2020-08-25 20:47:50 +02:00
|
|
|
|
#include <QPainterPath>
|
2019-11-10 00:12:44 +01:00
|
|
|
|
#include <QMouseEvent>
|
|
|
|
|
#include <QPainter>
|
|
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
|
static const QSize WIDGET_MINIMUM_SIZE(470, 470);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ImageCropper::ImageCropper(QWidget* parent) :
|
|
|
|
|
QWidget(parent),
|
|
|
|
|
pimpl(new ImageCropperPrivate)
|
|
|
|
|
{
|
|
|
|
|
setMinimumSize(WIDGET_MINIMUM_SIZE);
|
|
|
|
|
setMouseTracking(true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ImageCropper::~ImageCropper()
|
|
|
|
|
{
|
|
|
|
|
delete pimpl;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::setImage(const QPixmap& _image)
|
|
|
|
|
{
|
|
|
|
|
pimpl->imageForCropping = _image;
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::setBackgroundColor(const QColor& _backgroundColor)
|
|
|
|
|
{
|
|
|
|
|
pimpl->backgroundColor = _backgroundColor;
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::setCroppingRectBorderColor(const QColor& _borderColor)
|
|
|
|
|
{
|
|
|
|
|
pimpl->croppingRectBorderColor = _borderColor;
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::setProportion(const QSizeF& _proportion)
|
|
|
|
|
{
|
|
|
|
|
// Пропорции хранятся в коэффициентах приращения сторон
|
|
|
|
|
// Таким образом, при изменении размера области выделения,
|
|
|
|
|
// размеры сторон изменяются на размер зависящий от
|
|
|
|
|
// коэффициентов приращения.
|
|
|
|
|
|
|
|
|
|
// Сохраним пропорциональную зависимость области выделения в коэффициентах приращения сторон
|
|
|
|
|
if (pimpl->proportion != _proportion) {
|
|
|
|
|
pimpl->proportion = _proportion;
|
|
|
|
|
// ... расчитаем коэффициенты
|
|
|
|
|
float heightDelta = (float)_proportion.height() / _proportion.width();
|
|
|
|
|
float widthDelta = (float)_proportion.width() / _proportion.height();
|
|
|
|
|
// ... сохраним коэффициенты
|
|
|
|
|
pimpl->deltas.setHeight(heightDelta);
|
|
|
|
|
pimpl->deltas.setWidth(widthDelta);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Обновим пропорции области выделения
|
|
|
|
|
if ( pimpl->isProportionFixed ) {
|
|
|
|
|
float croppintRectSideRelation =
|
|
|
|
|
(float)pimpl->croppingRect.width() / pimpl->croppingRect.height();
|
|
|
|
|
float proportionSideRelation =
|
|
|
|
|
(float)pimpl->proportion.width() / pimpl->proportion.height();
|
|
|
|
|
// Если область выделения не соответствует необходимым пропорциям обновим её
|
|
|
|
|
if (croppintRectSideRelation != proportionSideRelation) {
|
|
|
|
|
bool widthShotrerThenHeight =
|
|
|
|
|
pimpl->croppingRect.width() < pimpl->croppingRect.height();
|
|
|
|
|
// ... установим размер той стороны, что длиннее
|
|
|
|
|
if (widthShotrerThenHeight) {
|
|
|
|
|
pimpl->croppingRect.setHeight(
|
|
|
|
|
pimpl->croppingRect.width() * pimpl->deltas.height());
|
|
|
|
|
} else {
|
|
|
|
|
pimpl->croppingRect.setWidth(
|
|
|
|
|
pimpl->croppingRect.height() * pimpl->deltas.width());
|
|
|
|
|
}
|
|
|
|
|
// ... перерисуем виджет
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::setProportionFixed(const bool _isFixed)
|
|
|
|
|
{
|
|
|
|
|
if (pimpl->isProportionFixed != _isFixed) {
|
|
|
|
|
pimpl->isProportionFixed = _isFixed;
|
|
|
|
|
setProportion(pimpl->proportion);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const QPixmap ImageCropper::cropImage()
|
|
|
|
|
{
|
|
|
|
|
// Получим размер отображаемого изображения
|
|
|
|
|
QSize scaledImageSize =
|
|
|
|
|
pimpl->imageForCropping.scaled(
|
2020-05-21 14:50:37 +02:00
|
|
|
|
size(), Qt::KeepAspectRatio, Qt::SmoothTransformation
|
2019-11-10 00:12:44 +01:00
|
|
|
|
).size();
|
|
|
|
|
// Определим расстояние от левого и верхнего краёв
|
|
|
|
|
float leftDelta = 0;
|
|
|
|
|
float topDelta = 0;
|
|
|
|
|
const float HALF_COUNT = 2;
|
2020-05-21 14:50:37 +02:00
|
|
|
|
if (size().height() == scaledImageSize.height()) {
|
|
|
|
|
leftDelta = (width() - scaledImageSize.width()) / HALF_COUNT;
|
2019-11-10 00:12:44 +01:00
|
|
|
|
} else {
|
2020-05-21 14:50:37 +02:00
|
|
|
|
topDelta = (height() - scaledImageSize.height()) / HALF_COUNT;
|
2019-11-10 00:12:44 +01:00
|
|
|
|
}
|
|
|
|
|
// Определим пропорцию области обрезки по отношению к исходному изображению
|
|
|
|
|
float xScale = (float)pimpl->imageForCropping.width() / scaledImageSize.width();
|
|
|
|
|
float yScale = (float)pimpl->imageForCropping.height() / scaledImageSize.height();
|
|
|
|
|
// Расчитаем область обрезки с учётом коррекции размеров исходного изображения
|
|
|
|
|
QRectF realSizeRect(
|
|
|
|
|
QPointF(pimpl->croppingRect.left() - leftDelta, pimpl->croppingRect.top() - topDelta),
|
|
|
|
|
pimpl->croppingRect.size());
|
|
|
|
|
// ... корректируем левый и верхний края
|
|
|
|
|
realSizeRect.setLeft((pimpl->croppingRect.left() - leftDelta) * xScale);
|
|
|
|
|
realSizeRect.setTop ((pimpl->croppingRect.top() - topDelta) * yScale);
|
|
|
|
|
// ... корректируем размер
|
|
|
|
|
realSizeRect.setWidth(pimpl->croppingRect.width() * xScale);
|
|
|
|
|
realSizeRect.setHeight(pimpl->croppingRect.height() * yScale);
|
|
|
|
|
// Получаем обрезанное изображение
|
|
|
|
|
return pimpl->imageForCropping.copy(realSizeRect.toRect());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// ********
|
|
|
|
|
// Protected section
|
|
|
|
|
|
|
|
|
|
void ImageCropper::paintEvent(QPaintEvent* _event)
|
|
|
|
|
{
|
2020-05-21 14:50:37 +02:00
|
|
|
|
QWidget::paintEvent(_event);
|
2019-11-10 00:12:44 +01:00
|
|
|
|
//
|
|
|
|
|
QPainter widgetPainter(this);
|
|
|
|
|
// Рисуем изображение по центру виджета
|
|
|
|
|
{
|
2020-05-21 14:50:37 +02:00
|
|
|
|
#if QT_VERSION >= 0x050600
|
|
|
|
|
qreal screenRatioPR = AppEnv::screenRatioPR();
|
2019-11-10 00:12:44 +01:00
|
|
|
|
// ... подгоним изображение для отображения по размеру виджета
|
|
|
|
|
QPixmap scaledImage =
|
2020-05-21 14:50:37 +02:00
|
|
|
|
pimpl->imageForCropping.scaled(qRound((double)width() * screenRatioPR), qRound((double)height() * screenRatioPR), Qt::KeepAspectRatio, Qt::SmoothTransformation);
|
|
|
|
|
scaledImage.setDevicePixelRatio(screenRatioPR);
|
|
|
|
|
#else
|
|
|
|
|
QPixmap scaledImage =
|
|
|
|
|
pimpl->imageForCropping.scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
|
|
|
|
|
#endif
|
2019-11-10 00:12:44 +01:00
|
|
|
|
// ... заливаем фон
|
2020-05-21 14:50:37 +02:00
|
|
|
|
widgetPainter.fillRect(rect(), pimpl->backgroundColor);
|
2019-11-10 00:12:44 +01:00
|
|
|
|
// ... рисуем изображение по центру виджета
|
2020-05-21 14:50:37 +02:00
|
|
|
|
#if QT_VERSION >= 0x050600
|
|
|
|
|
if (qRound((double)height() * screenRatioPR) == scaledImage.height()) {
|
|
|
|
|
widgetPainter.drawPixmap( ( qRound((double)width() * screenRatioPR) - scaledImage.width() ) / 2, 0, scaledImage );
|
2019-11-10 00:12:44 +01:00
|
|
|
|
} else {
|
2020-05-21 14:50:37 +02:00
|
|
|
|
widgetPainter.drawPixmap( 0, ( qRound((double)height() * screenRatioPR) - scaledImage.height() ) / 2, scaledImage );
|
2019-11-10 00:12:44 +01:00
|
|
|
|
}
|
2020-05-21 14:50:37 +02:00
|
|
|
|
#else
|
|
|
|
|
if (height() == scaledImage.height()) {
|
|
|
|
|
widgetPainter.drawPixmap( ( width()- scaledImage.width() ) / 2, 0, scaledImage );
|
|
|
|
|
} else {
|
|
|
|
|
widgetPainter.drawPixmap( 0, ( height() - scaledImage.height() ) / 2, scaledImage );
|
|
|
|
|
}
|
|
|
|
|
#endif
|
2019-11-10 00:12:44 +01:00
|
|
|
|
}
|
|
|
|
|
// Рисуем область обрезки
|
|
|
|
|
{
|
|
|
|
|
// ... если это первое отображение после инициилизации, то центруем областо обрезки
|
|
|
|
|
if (pimpl->croppingRect.isNull()) {
|
2020-05-21 14:50:37 +02:00
|
|
|
|
const int cwidth = WIDGET_MINIMUM_SIZE.width()/2;
|
|
|
|
|
const int cheight = WIDGET_MINIMUM_SIZE.height()/2;
|
|
|
|
|
pimpl->croppingRect.setSize(QSize(cwidth, cheight));
|
|
|
|
|
float x = (width() - pimpl->croppingRect.width())/2;
|
|
|
|
|
float y = (height() - pimpl->croppingRect.height())/2;
|
2019-11-10 00:12:44 +01:00
|
|
|
|
pimpl->croppingRect.moveTo(x, y);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// ... рисуем затемненную область
|
|
|
|
|
QPainterPath p;
|
|
|
|
|
p.addRect(pimpl->croppingRect);
|
2020-05-21 14:50:37 +02:00
|
|
|
|
p.addRect(rect());
|
2019-11-10 00:12:44 +01:00
|
|
|
|
widgetPainter.setBrush(QBrush(QColor(0,0,0,120)));
|
|
|
|
|
widgetPainter.setPen(Qt::transparent);
|
|
|
|
|
widgetPainter.drawPath(p);
|
|
|
|
|
// Рамка и контрольные точки
|
|
|
|
|
widgetPainter.setPen(pimpl->croppingRectBorderColor);
|
|
|
|
|
// ... рисуем прямоугольник области обрезки
|
|
|
|
|
{
|
|
|
|
|
widgetPainter.setBrush(QBrush(Qt::transparent));
|
|
|
|
|
widgetPainter.drawRect(pimpl->croppingRect);
|
|
|
|
|
}
|
|
|
|
|
// ... рисуем контрольные точки
|
|
|
|
|
{
|
|
|
|
|
widgetPainter.setBrush(QBrush(pimpl->croppingRectBorderColor));
|
|
|
|
|
// Вспомогательные X координаты
|
|
|
|
|
int leftXCoord = pimpl->croppingRect.left() - 2;
|
|
|
|
|
int centerXCoord = pimpl->croppingRect.center().x() - 3;
|
|
|
|
|
int rightXCoord = pimpl->croppingRect.right() - 2;
|
|
|
|
|
// Вспомогательные Y координаты
|
|
|
|
|
int topYCoord = pimpl->croppingRect.top() - 2;
|
|
|
|
|
int middleYCoord = pimpl->croppingRect.center().y() - 3;
|
|
|
|
|
int bottomYCoord = pimpl->croppingRect.bottom() - 2;
|
|
|
|
|
//
|
|
|
|
|
const QSize pointSize(6, 6);
|
|
|
|
|
//
|
|
|
|
|
QVector<QRect> points;
|
|
|
|
|
points
|
|
|
|
|
// левая сторона
|
|
|
|
|
<< QRect( QPoint(leftXCoord, topYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(leftXCoord, middleYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(leftXCoord, bottomYCoord), pointSize )
|
|
|
|
|
// центр
|
|
|
|
|
<< QRect( QPoint(centerXCoord, topYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(centerXCoord, middleYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(centerXCoord, bottomYCoord), pointSize )
|
|
|
|
|
// правая сторона
|
|
|
|
|
<< QRect( QPoint(rightXCoord, topYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(rightXCoord, middleYCoord), pointSize )
|
|
|
|
|
<< QRect( QPoint(rightXCoord, bottomYCoord), pointSize );
|
|
|
|
|
//
|
|
|
|
|
widgetPainter.drawRects( points );
|
|
|
|
|
}
|
|
|
|
|
// ... рисуем пунктирные линии
|
|
|
|
|
{
|
|
|
|
|
QPen dashPen(pimpl->croppingRectBorderColor);
|
|
|
|
|
dashPen.setStyle(Qt::DashLine);
|
|
|
|
|
widgetPainter.setPen(dashPen);
|
|
|
|
|
// ... вертикальная
|
|
|
|
|
widgetPainter.drawLine(
|
|
|
|
|
QPoint(pimpl->croppingRect.center().x(), pimpl->croppingRect.top()),
|
|
|
|
|
QPoint(pimpl->croppingRect.center().x(), pimpl->croppingRect.bottom()) );
|
|
|
|
|
// ... горизонтальная
|
|
|
|
|
widgetPainter.drawLine(
|
|
|
|
|
QPoint(pimpl->croppingRect.left(), pimpl->croppingRect.center().y()),
|
|
|
|
|
QPoint(pimpl->croppingRect.right(), pimpl->croppingRect.center().y()) );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
widgetPainter.end();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::mousePressEvent(QMouseEvent* _event)
|
|
|
|
|
{
|
|
|
|
|
if (_event->button() == Qt::LeftButton) {
|
|
|
|
|
pimpl->isMousePressed = true;
|
|
|
|
|
pimpl->startMousePos = _event->pos();
|
|
|
|
|
pimpl->lastStaticCroppingRect = pimpl->croppingRect;
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
updateCursorIcon(_event->pos());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::mouseMoveEvent(QMouseEvent* _event)
|
|
|
|
|
{
|
|
|
|
|
QPointF mousePos = _event->pos(); // относительно себя (виджета)
|
|
|
|
|
//
|
|
|
|
|
if (!pimpl->isMousePressed) {
|
|
|
|
|
// Обработка обычного состояния, т.е. не изменяется размер
|
|
|
|
|
// области обрезки, и она не перемещается по виджету
|
|
|
|
|
pimpl->cursorPosition = cursorPosition(pimpl->croppingRect, mousePos);
|
|
|
|
|
updateCursorIcon(mousePos);
|
|
|
|
|
} else if (pimpl->cursorPosition != CursorPositionUndefined) {
|
|
|
|
|
// Обработка действий над областью обрезки
|
|
|
|
|
// ... определим смещение курсора мышки
|
|
|
|
|
QPointF mouseDelta;
|
|
|
|
|
mouseDelta.setX( mousePos.x() - pimpl->startMousePos.x() );
|
|
|
|
|
mouseDelta.setY( mousePos.y() - pimpl->startMousePos.y() );
|
|
|
|
|
//
|
|
|
|
|
if (pimpl->cursorPosition != CursorPositionMiddle) {
|
|
|
|
|
// ... изменяем размер области обрезки
|
|
|
|
|
QRectF newGeometry =
|
|
|
|
|
calculateGeometry(
|
|
|
|
|
pimpl->lastStaticCroppingRect,
|
|
|
|
|
pimpl->cursorPosition,
|
|
|
|
|
mouseDelta);
|
|
|
|
|
// ... пользователь пытается вывернуть область обрезки наизнанку
|
|
|
|
|
if (!newGeometry.isNull()) {
|
|
|
|
|
pimpl->croppingRect = newGeometry;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
// ... перемещаем область обрезки
|
|
|
|
|
pimpl->croppingRect.moveTo( pimpl->lastStaticCroppingRect.topLeft() + mouseDelta );
|
|
|
|
|
}
|
|
|
|
|
// Перерисуем виджет
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::mouseReleaseEvent(QMouseEvent* _event)
|
|
|
|
|
{
|
|
|
|
|
pimpl->isMousePressed = false;
|
|
|
|
|
updateCursorIcon(_event->pos());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// ********
|
|
|
|
|
// Private section
|
|
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
|
// Находится ли точка рядом с координатой стороны
|
|
|
|
|
static bool isPointNearSide (const int _sideCoordinate, const int _pointCoordinate)
|
|
|
|
|
{
|
|
|
|
|
static const int indent = 10;
|
|
|
|
|
return (_sideCoordinate - indent) < _pointCoordinate && _pointCoordinate < (_sideCoordinate + indent);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
CursorPosition ImageCropper::cursorPosition(const QRectF& _cropRect, const QPointF& _mousePosition)
|
|
|
|
|
{
|
|
|
|
|
CursorPosition cursorPosition = CursorPositionUndefined;
|
|
|
|
|
//
|
|
|
|
|
if ( _cropRect.contains( _mousePosition ) ) {
|
|
|
|
|
// Двухстороннее направление
|
|
|
|
|
if (isPointNearSide(_cropRect.top(), _mousePosition.y()) &&
|
|
|
|
|
isPointNearSide(_cropRect.left(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionTopLeft;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.bottom(), _mousePosition.y()) &&
|
|
|
|
|
isPointNearSide(_cropRect.left(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionBottomLeft;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.top(), _mousePosition.y()) &&
|
|
|
|
|
isPointNearSide(_cropRect.right(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionTopRight;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.bottom(), _mousePosition.y()) &&
|
|
|
|
|
isPointNearSide(_cropRect.right(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionBottomRight;
|
|
|
|
|
// Одностороннее направление
|
|
|
|
|
} else if (isPointNearSide(_cropRect.left(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionLeft;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.right(), _mousePosition.x())) {
|
|
|
|
|
cursorPosition = CursorPositionRight;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.top(), _mousePosition.y())) {
|
|
|
|
|
cursorPosition = CursorPositionTop;
|
|
|
|
|
} else if (isPointNearSide(_cropRect.bottom(), _mousePosition.y())) {
|
|
|
|
|
cursorPosition = CursorPositionBottom;
|
|
|
|
|
// Без направления
|
|
|
|
|
} else {
|
|
|
|
|
cursorPosition = CursorPositionMiddle;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
return cursorPosition;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ImageCropper::updateCursorIcon(const QPointF& _mousePosition)
|
|
|
|
|
{
|
|
|
|
|
QCursor cursorIcon;
|
|
|
|
|
//
|
|
|
|
|
switch (cursorPosition(pimpl->croppingRect, _mousePosition))
|
|
|
|
|
{
|
|
|
|
|
case CursorPositionTopRight:
|
|
|
|
|
case CursorPositionBottomLeft:
|
|
|
|
|
cursorIcon = QCursor(Qt::SizeBDiagCursor);
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTopLeft:
|
|
|
|
|
case CursorPositionBottomRight:
|
|
|
|
|
cursorIcon = QCursor(Qt::SizeFDiagCursor);
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTop:
|
|
|
|
|
case CursorPositionBottom:
|
|
|
|
|
cursorIcon = QCursor(Qt::SizeVerCursor);
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionLeft:
|
|
|
|
|
case CursorPositionRight:
|
|
|
|
|
cursorIcon = QCursor(Qt::SizeHorCursor);
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionMiddle:
|
|
|
|
|
cursorIcon = pimpl->isMousePressed ?
|
|
|
|
|
QCursor(Qt::ClosedHandCursor) :
|
|
|
|
|
QCursor(Qt::OpenHandCursor);
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionUndefined:
|
|
|
|
|
default:
|
|
|
|
|
cursorIcon = QCursor(Qt::ArrowCursor);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
this->setCursor(cursorIcon);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const QRectF ImageCropper::calculateGeometry(
|
|
|
|
|
const QRectF& _sourceGeometry,
|
|
|
|
|
const CursorPosition _cursorPosition,
|
|
|
|
|
const QPointF& _mouseDelta
|
|
|
|
|
)
|
|
|
|
|
{
|
|
|
|
|
QRectF resultGeometry;
|
|
|
|
|
//
|
|
|
|
|
if ( pimpl->isProportionFixed ) {
|
|
|
|
|
resultGeometry =
|
|
|
|
|
calculateGeometryWithFixedProportions(
|
|
|
|
|
_sourceGeometry, _cursorPosition, _mouseDelta, pimpl->deltas);
|
|
|
|
|
} else {
|
|
|
|
|
resultGeometry =
|
|
|
|
|
calculateGeometryWithCustomProportions(
|
|
|
|
|
_sourceGeometry, _cursorPosition, _mouseDelta);
|
|
|
|
|
}
|
|
|
|
|
// Если пользователь пытается вывернуть область обрезки наизнанку,
|
|
|
|
|
// возвращаем null-прямоугольник
|
|
|
|
|
if ((resultGeometry.left() >= resultGeometry.right()) ||
|
|
|
|
|
(resultGeometry.top() >= resultGeometry.bottom())) {
|
|
|
|
|
resultGeometry = QRect();
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
return resultGeometry;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const QRectF ImageCropper::calculateGeometryWithCustomProportions(
|
|
|
|
|
const QRectF& _sourceGeometry,
|
|
|
|
|
const CursorPosition _cursorPosition,
|
|
|
|
|
const QPointF& _mouseDelta
|
|
|
|
|
)
|
|
|
|
|
{
|
|
|
|
|
QRectF resultGeometry = _sourceGeometry;
|
|
|
|
|
//
|
|
|
|
|
switch ( _cursorPosition )
|
|
|
|
|
{
|
|
|
|
|
case CursorPositionTopLeft:
|
|
|
|
|
resultGeometry.setLeft( _sourceGeometry.left() + _mouseDelta.x() );
|
|
|
|
|
resultGeometry.setTop ( _sourceGeometry.top() + _mouseDelta.y() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTopRight:
|
|
|
|
|
resultGeometry.setTop ( _sourceGeometry.top() + _mouseDelta.y() );
|
|
|
|
|
resultGeometry.setRight( _sourceGeometry.right() + _mouseDelta.x() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottomLeft:
|
|
|
|
|
resultGeometry.setBottom( _sourceGeometry.bottom() + _mouseDelta.y() );
|
|
|
|
|
resultGeometry.setLeft ( _sourceGeometry.left() + _mouseDelta.x() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottomRight:
|
|
|
|
|
resultGeometry.setBottom( _sourceGeometry.bottom() + _mouseDelta.y() );
|
|
|
|
|
resultGeometry.setRight ( _sourceGeometry.right() + _mouseDelta.x() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTop:
|
|
|
|
|
resultGeometry.setTop( _sourceGeometry.top() + _mouseDelta.y() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottom:
|
|
|
|
|
resultGeometry.setBottom( _sourceGeometry.bottom() + _mouseDelta.y() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionLeft:
|
|
|
|
|
resultGeometry.setLeft( _sourceGeometry.left() + _mouseDelta.x() );
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionRight:
|
|
|
|
|
resultGeometry.setRight( _sourceGeometry.right() + _mouseDelta.x() );
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
return resultGeometry;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
const QRectF ImageCropper::calculateGeometryWithFixedProportions(
|
|
|
|
|
const QRectF& _sourceGeometry,
|
|
|
|
|
const CursorPosition _cursorPosition,
|
|
|
|
|
const QPointF& _mouseDelta,
|
|
|
|
|
const QSizeF& _deltas
|
|
|
|
|
)
|
|
|
|
|
{
|
|
|
|
|
QRectF resultGeometry = _sourceGeometry;
|
|
|
|
|
//
|
|
|
|
|
switch (_cursorPosition)
|
|
|
|
|
{
|
|
|
|
|
case CursorPositionLeft:
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() + _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setLeft(_sourceGeometry.left() + _mouseDelta.x());
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionRight:
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() - _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() + _mouseDelta.x());
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTop:
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() - _mouseDelta.y() * _deltas.width());
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottom:
|
|
|
|
|
resultGeometry.setBottom(_sourceGeometry.bottom() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() + _mouseDelta.y() * _deltas.width());
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTopLeft:
|
|
|
|
|
if ((_mouseDelta.x() * _deltas.height()) < (_mouseDelta.y())) {
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() + _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setLeft(_sourceGeometry.left() + _mouseDelta.x());
|
|
|
|
|
} else {
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setLeft(_sourceGeometry.left() + _mouseDelta.y() * _deltas.width());
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionTopRight:
|
|
|
|
|
if ((_mouseDelta.x() * _deltas.height() * -1) < (_mouseDelta.y())) {
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() - _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() + _mouseDelta.x() );
|
|
|
|
|
} else {
|
|
|
|
|
resultGeometry.setTop(_sourceGeometry.top() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() - _mouseDelta.y() * _deltas.width());
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottomLeft:
|
|
|
|
|
if ((_mouseDelta.x() * _deltas.height()) < (_mouseDelta.y() * -1)) {
|
|
|
|
|
resultGeometry.setBottom(_sourceGeometry.bottom() - _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setLeft(_sourceGeometry.left() + _mouseDelta.x());
|
|
|
|
|
} else {
|
|
|
|
|
resultGeometry.setBottom(_sourceGeometry.bottom() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setLeft(_sourceGeometry.left() - _mouseDelta.y() * _deltas.width());
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case CursorPositionBottomRight:
|
|
|
|
|
if ((_mouseDelta.x() * _deltas.height()) > (_mouseDelta.y())) {
|
|
|
|
|
resultGeometry.setBottom(_sourceGeometry.bottom() + _mouseDelta.x() * _deltas.height());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() + _mouseDelta.x());
|
|
|
|
|
} else {
|
|
|
|
|
resultGeometry.setBottom(_sourceGeometry.bottom() + _mouseDelta.y());
|
|
|
|
|
resultGeometry.setRight(_sourceGeometry.right() + _mouseDelta.y() * _deltas.width());
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
//
|
|
|
|
|
return resultGeometry;
|
|
|
|
|
}
|
|
|
|
|
|