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Diffstat (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/separations/screenwidget.cpp')
| -rw-r--r-- | sources/pyside2/doc/codesnippets/doc/src/snippets/separations/screenwidget.cpp | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/separations/screenwidget.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/separations/screenwidget.cpp deleted file mode 100644 index 5f0bd6f4d..000000000 --- a/sources/pyside2/doc/codesnippets/doc/src/snippets/separations/screenwidget.cpp +++ /dev/null @@ -1,227 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of Qt for Python. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/* -screenwidget.cpp - -A widget to display colour components from an image using independently -selected colors. Controls are provided to allow the image to be inverted, and -the color to be selection via a standard dialog. The image is displayed in a -label widget. -*/ - -#include <QApplication> -#include <QColorDialog> -#include <QGridLayout> -#include <QImage> -#include <QLabel> -#include <QMenu> -#include <QMimeData> -#include <QMouseEvent> -#include <QPixmap> -#include <QPushButton> -#include <QWidget> - -#include "screenwidget.h" - -/*! -Initializes the paint color, the mask color (cyan, magenta, -or yellow), connects the color selector and invert checkbox to functions, -and creates a two-by-two grid layout. -*/ - -ScreenWidget::ScreenWidget(QWidget *parent, QColor initialColor, - const QString &name, Separation mask, - const QSize &labelSize) - : QFrame(parent) -{ - paintColor = initialColor; - maskColor = mask; - inverted = false; - - imageLabel = new QLabel; - imageLabel->setFrameShadow(QFrame::Sunken); - imageLabel->setFrameShape(QFrame::StyledPanel); - imageLabel->setMinimumSize(labelSize); - - nameLabel = new QLabel(name); - colorButton = new QPushButton(tr("Modify...")); - colorButton->setBackgroundRole(QPalette::Button); - colorButton->setMinimumSize(32, 32); - - QPalette palette(colorButton->palette()); - palette.setColor(QPalette::Button, initialColor); - colorButton->setPalette(palette); - - invertButton = new QPushButton(tr("Invert")); - //invertButton->setToggleButton(true); - //invertButton->setOn(inverted); - invertButton->setEnabled(false); - - connect(colorButton, SIGNAL(clicked()), this, SLOT(setColor())); - connect(invertButton, SIGNAL(clicked()), this, SLOT(invertImage())); - - QGridLayout *gridLayout = new QGridLayout; - gridLayout->addWidget(imageLabel, 0, 0, 1, 2); - gridLayout->addWidget(nameLabel, 1, 0); - gridLayout->addWidget(colorButton, 1, 1); - gridLayout->addWidget(invertButton, 2, 1, 1, 1); - setLayout(gridLayout); -} - -/*! - Creates a new image by separating out the cyan, magenta, or yellow - component, depending on the mask color specified in the constructor. - - The amount of the component found in each pixel of the image is used - to determine how much of a user-selected ink is used for each pixel - in the new image for the label widget. -*/ - -void ScreenWidget::createImage() -{ - newImage = originalImage.copy(); - - // Create CMY components for the ink being used. - float cyanInk = (255 - paintColor.red())/255.0; - float magentaInk = (255 - paintColor.green())/255.0; - float yellowInk = (255 - paintColor.blue())/255.0; - - int (*convert)(QRgb); - - switch (maskColor) { - case Cyan: - convert = qRed; - break; - case Magenta: - convert = qGreen; - break; - case Yellow: - convert = qBlue; - break; - } - - for (int y = 0; y < newImage.height(); ++y) { - for (int x = 0; x < newImage.width(); ++x) { - QRgb p(originalImage.pixel(x, y)); - - // Separate the source pixel into its cyan component. - int amount; - - if (inverted) - amount = convert(p); - else - amount = 255 - convert(p); - - QColor newColor( - 255 - qMin(int(amount * cyanInk), 255), - 255 - qMin(int(amount * magentaInk), 255), - 255 - qMin(int(amount * yellowInk), 255)); - - newImage.setPixel(x, y, newColor.rgb()); - } - } - - imageLabel->setPixmap(QPixmap::fromImage(newImage)); -} - -/*! - Returns a pointer to the modified image. -*/ - -QImage* ScreenWidget::image() -{ - return &newImage; -} - -/*! - Sets whether the amount of ink applied to the canvas is to be inverted - (subtracted from the maximum value) before the ink is applied. -*/ - -void ScreenWidget::invertImage() -{ - //inverted = invertButton->isOn(); - inverted = !inverted; - createImage(); - emit imageChanged(); -} - -/*! - Separate the current image into cyan, magenta, and yellow components. - Create a representation of how each component might appear when applied - to a blank white piece of paper. -*/ - -void ScreenWidget::setColor() -{ - QColor newColor = QColorDialog::getColor(paintColor); - - if (newColor.isValid()) { - paintColor = newColor; - QPalette palette(colorButton->palette()); - palette.setColor(QPalette::Button, paintColor); - colorButton->setPalette(palette); - createImage(); - emit imageChanged(); - } -} - -/*! - Records the original image selected by the user, creates a color - separation, and enables the invert image checkbox. -*/ - -void ScreenWidget::setImage(QImage &image) -{ - originalImage = image; - createImage(); - invertButton->setEnabled(true); -} |