diff options
Diffstat (limited to 'examples/widgets/tools/plugandpaint/app/paintarea.cpp')
-rw-r--r-- | examples/widgets/tools/plugandpaint/app/paintarea.cpp | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/examples/widgets/tools/plugandpaint/app/paintarea.cpp b/examples/widgets/tools/plugandpaint/app/paintarea.cpp deleted file mode 100644 index 3596f7979c..0000000000 --- a/examples/widgets/tools/plugandpaint/app/paintarea.cpp +++ /dev/null @@ -1,152 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - - -#include "paintarea.h" -#include "interfaces.h" - -#include <QMouseEvent> -#include <QPainter> - -PaintArea::PaintArea(QWidget *parent) : QWidget(parent) -{ - setAttribute(Qt::WA_StaticContents); - setAttribute(Qt::WA_OpaquePaintEvent); - - theImage.fill(qRgb(255, 255, 255)); -} - -bool PaintArea::openImage(const QString &fileName) -{ - QImage image; - if (!image.load(fileName)) - return false; - - setImage(image); - return true; -} - -bool PaintArea::saveImage(const QString &fileName, const char *fileFormat) -{ - return theImage.save(fileName, fileFormat); -} - -void PaintArea::setImage(const QImage &image) -{ - theImage = image.convertToFormat(QImage::Format_RGB32); - update(); - updateGeometry(); -} - -void PaintArea::insertShape(const QPainterPath &path) -{ - pendingPath = path; -#ifndef QT_NO_CURSOR - setCursor(Qt::CrossCursor); -#endif -} - -void PaintArea::setBrushColor(const QColor &color) -{ - this->color = color; -} - -void PaintArea::setBrushWidth(int width) -{ - thickness = width; -} - -//! [0] -void PaintArea::setBrush(BrushInterface *brushInterface, const QString &brush) -{ - this->brushInterface = brushInterface; - this->brush = brush; -} -//! [0] - -QSize PaintArea::sizeHint() const -{ - return theImage.size(); -} - -void PaintArea::paintEvent(QPaintEvent * /* event */) -{ - QPainter painter(this); - painter.drawImage(QPoint(0, 0), theImage); -} - -void PaintArea::mousePressEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton) { - if (!pendingPath.isEmpty()) { - QPainter painter(&theImage); - setupPainter(painter); - - const QRectF boundingRect = pendingPath.boundingRect(); - QLinearGradient gradient(boundingRect.topRight(), - boundingRect.bottomLeft()); - gradient.setColorAt(0.0, QColor(color.red(), color.green(), - color.blue(), 63)); - gradient.setColorAt(1.0, QColor(color.red(), color.green(), - color.blue(), 191)); - painter.setBrush(gradient); - painter.translate(event->position().toPoint() - boundingRect.center()); - painter.drawPath(pendingPath); - - pendingPath = QPainterPath(); -#ifndef QT_NO_CURSOR - unsetCursor(); -#endif - update(); - } else { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - const QRect rect = brushInterface->mousePress(brush, painter, - event->position().toPoint()); - update(rect); - } - - lastPos = event->position().toPoint(); - } - } -} - -//! [1] -void PaintArea::mouseMoveEvent(QMouseEvent *event) -{ - if ((event->buttons() & Qt::LeftButton) && lastPos != QPoint(-1, -1)) { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - const QRect rect = brushInterface->mouseMove(brush, painter, lastPos, - event->position().toPoint()); - update(rect); - } - - lastPos = event->position().toPoint(); - } -} -//! [1] - -void PaintArea::mouseReleaseEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton && lastPos != QPoint(-1, -1)) { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - QRect rect = brushInterface->mouseRelease(brush, painter, - event->position().toPoint()); - update(rect); - } - - lastPos = QPoint(-1, -1); - } -} - -void PaintArea::setupPainter(QPainter &painter) -{ - painter.setRenderHint(QPainter::Antialiasing, true); - painter.setPen(QPen(color, thickness, Qt::SolidLine, Qt::RoundCap, - Qt::RoundJoin)); -} |