IntelliPhotoGui.cpp

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// ---------- IntelliPhotoGui.cpp ----------
 
#include <QtWidgets>
#include <QPixmap>
 
#include "IntelliPhotoGui.h"
#include "Layer/PaintingArea.h"
 
// IntelliPhotoGui constructor
IntelliPhotoGui::IntelliPhotoGui(){
        // create Gui elements and lay them out
        createGui();
        // Create actions
        createActions();
        // create Menus
        createMenus();
        // set style of the gui
        setIntelliStyle();
        // Size the app
        resize(600,600);
        showMaximized();
 
}
 
// User tried to close the app
void IntelliPhotoGui::closeEvent(QCloseEvent*event){
        // If they try to close maybeSave() returns true
        // if no changes have been made and the app closes
        if (maybeSave()) {
                event->accept();
        } else {
                // If there have been changes ignore the event
                event->ignore();
        }
}
 
// Check if the current image has been changed and then
// open a dialog to open a file
void IntelliPhotoGui::slotOpen(){
        // Check if changes have been made since last save
        // maybeSave() returns true if no changes have been made
        if (maybeSave()) {
 
                // Get the file to open from a dialog
                // tr sets the window title to Open File
                // QDir opens the current dirctory
                QString fileName = QFileDialog::getOpenFileName(this,
                                                                tr("Open File"), QDir::currentPath(), nullptr, nullptr, QFileDialog::DontUseNativeDialog);
 
                // If we have a file name load the image and place
                // it in the paintingArea
                if (!fileName.isEmpty())
                        paintingArea->open(fileName);
        }
}
 
// Called when the user clicks Save As in the menu
void IntelliPhotoGui::slotSave(){
        // A QAction represents the action of the user clicking
        QAction*action = qobject_cast<QAction*>(sender());
 
        // Stores the array of bytes of the users data
        QByteArray fileFormat = action->data().toByteArray();
 
        // Pass it to be saved
        saveFile(fileFormat);
}
 
// Opens a dialog that allows the user to create a New Layer
void IntelliPhotoGui::slotCreateNewLayer(){
        // Stores button value
        bool ok1, ok2;
 
        // "New Layer" is the title of the window
        // the next tr is the text to display
        // Define the standard Value, min, max, step and ok button
        int width = QInputDialog::getInt(this, tr("New Layer"),
                                         tr("Width:"),
                                         200,1, 500, 1, &ok1);
        int height = QInputDialog::getInt(this, tr("New Layer"),
                                          tr("Height:"),
                                          200,1, 500, 1, &ok2);
        // Create New Layer
        if (ok1&&ok2)
        {
                int layer = paintingArea->addLayer(width,height,0,0);
                paintingArea->slotActivateLayer(layer);
        }
}
 
// Opens a dialog that allows the user to delete a Layer
void IntelliPhotoGui::slotDeleteLayer(){
        // Stores button value
        bool ok;
 
        // "delete Layer" is the title of the window
        // the next tr is the text to display
        // Define the standard Value, min, max, step and ok button
        int layerNumber = QInputDialog::getInt(this, tr("delete Layer"),
                                               tr("Number:"),
                                               1,0, 500, 1, &ok);
        // Create New Layer
        if (ok)
                paintingArea->deleteLayer(layerNumber);
}
 
void IntelliPhotoGui::slotSetActiveAlpha(){
        // Stores button value
        bool ok1, ok2;
 
        // "Layer to set on" is the title of the window
        // the next tr is the text to display
        // Define the standard Value, min, max, step and ok button
        int layer = QInputDialog::getInt(this, tr("Layer to set on"),
                                         tr("Layer:"),
                                         -1,-1,100,1, &ok1);
        // "New Alpha" is the title of the window
        int alpha = QInputDialog::getInt(this, tr("New Alpha"),
                                         tr("Alpha:"),
                                         255,0, 255, 1, &ok2);
        if (ok1&&ok2)
        {
                paintingArea->setAlphaOfLayer(layer,alpha);
        }
}
 
void IntelliPhotoGui::slotPositionMoveUp(){
        paintingArea->movePositionActive(0,-20);
        update();
}
 
void IntelliPhotoGui::slotPositionMoveDown(){
        paintingArea->movePositionActive(0,20);
        update();
}
 
void IntelliPhotoGui::slotPositionMoveLeft(){
        paintingArea->movePositionActive(-20,0);
        update();
}
 
void IntelliPhotoGui::slotPositionMoveRight(){
        paintingArea->movePositionActive(20,0);
        update();
}
 
void IntelliPhotoGui::slotMoveLayerUp(){
        paintingArea->moveActiveLayer(1);
        update();
}
 
void IntelliPhotoGui::slotMoveLayerDown(){
        paintingArea->moveActiveLayer(-1);
        update();
}
 
void IntelliPhotoGui::slotClearActiveLayer(){
        // Stores button value
        bool ok1, ok2, ok3, ok4;
 
        // "Red Input" is the title of the window
        // the next tr is the text to display
        // Define the standard Value, min, max, step and ok button
        int red = QInputDialog::getInt(this, tr("Red Input"),
                                       tr("Red:"),
                                       255,0, 255,1, &ok1);
        // "Green Input" is the title of the window
        int green = QInputDialog::getInt(this, tr("Green Input"),
                                         tr("Green:"),
                                         255,0, 255, 1, &ok2);
        // "Blue Input" is the title of the window
        int blue = QInputDialog::getInt(this, tr("Blue Input"),
                                        tr("Blue:"),
                                        255,0, 255, 1, &ok3);
        // "Alpha Input" is the title of the window
        int alpha = QInputDialog::getInt(this, tr("Alpha Input"),
                                         tr("Alpha:"),
                                         255,0, 255, 1, &ok4);
        if (ok1&&ok2&&ok3&&ok4)
        {
                paintingArea->floodFill(red, green, blue, alpha);
        }
}
 
void IntelliPhotoGui::slotSetActiveLayer(){
        // Stores button value
        bool ok1;
 
        // "Layer to set on" is the title of the window
        // the next tr is the text to display
        // Define the standard Value, min, max, step and ok button
        int layer = QInputDialog::getInt(this, tr("Layer to set on"),
                                         tr("Layer:"),
                                         -1,0,255,1, &ok1);
        if (ok1)
        {
                paintingArea->setLayerToActive(layer);
        }
}
 
void IntelliPhotoGui::slotSetFirstColor(){
        paintingArea->colorPickerSetFirstColor();
}
 
void IntelliPhotoGui::slotSetSecondColor(){
        paintingArea->colorPickerSetSecondColor();
}
 
void IntelliPhotoGui::slotSwitchColor(){
        paintingArea->colorPickerSwitchColor();
}
 
void IntelliPhotoGui::slotCreatePenTool(){
        paintingArea->createPenTool();
}
 
void IntelliPhotoGui::slotCreatePlainTool(){
        paintingArea->createPlainTool();
}
 
void IntelliPhotoGui::slotCreateLineTool(){
        paintingArea->createLineTool();
}
 
void IntelliPhotoGui::slotCreateRectangleTool(){
        paintingArea->createRectangleTool();
}
 
void IntelliPhotoGui::slotCreateCircleTool(){
        paintingArea->createCircleTool();
}
 
void IntelliPhotoGui::slotCreatePolygonTool(){
        paintingArea->createPolygonTool();
}
 
void IntelliPhotoGui::slotCreateFloodFillTool(){
        paintingArea->createFloodFillTool();
}
 
// Open an about dialog
void IntelliPhotoGui::slotAboutDialog(){
        // Window title and text to display
        QMessageBox::about(this, tr("About Painting"),
                           tr("<p><b>IntelliPhoto</b>Pretty basic editor.</p>"));
}
 
// Define menu actions that call functions
void IntelliPhotoGui::createActions(){
        // Get a list of the supported file formats
        // QImageWriter is used to write images to files
        foreach (QByteArray format, QImageWriter::supportedImageFormats()) {
                QString text = tr("%1...").arg(QString(format).toUpper());
 
                // Create an action for each file format
                QAction*action = new QAction(text, this);
 
                // Set an action for each file format
                action->setData(format);
 
                // When clicked call IntelliPhotoGui::save()
                connect(action, SIGNAL(triggered()), this, SLOT(slotSave()));
 
                // Attach each file format option menu item to Save As
                actionSaveAs.append(action);
        }
 
        //set exporter to actions
        QAction*pngSaveAction = new QAction("PNG-8", this);
        pngSaveAction->setData("PNG");
        // When clicked call IntelliPhotoGui::save()
        connect(pngSaveAction, SIGNAL(triggered()), this, SLOT(slotSave()));
        // Attach each PNG in save Menu
        actionSaveAs.append(pngSaveAction);
 
        // Create exit action and tie to IntelliPhotoGui::close()
        actionExit = new QAction(tr("&Exit"), this);
        actionExit->setShortcuts(QKeySequence::Quit);
        connect(actionExit, SIGNAL(triggered()), this, SLOT(close()));
 
        actionOpen = new QAction(tr("&Open"), this);
        actionOpen->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_O));
        connect(actionOpen, SIGNAL(triggered()), this, SLOT(slotOpen()));
 
        // Create New Layer action and tie to IntelliPhotoGui::newLayer()
        actionCreateNewLayer = new QAction(tr("&New Layer..."), this);
        actionCreateNewLayer->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_N));
        connect(actionCreateNewLayer, SIGNAL(triggered()), this, SLOT(slotCreateNewLayer()));
 
        // Delete New Layer action and tie to IntelliPhotoGui::deleteLayer()
        actionDeleteLayer = new QAction(tr("&Delete Layer..."), this);
        connect(actionDeleteLayer, SIGNAL(triggered()), this, SLOT(slotDeleteLayer()));
 
        actionSetActiveLayer = new QAction(tr("&set Active"), this);
        connect(actionSetActiveLayer, SIGNAL(triggered()), this, SLOT(slotSetActiveLayer()));
 
        actionSetActiveAlpha = new QAction(tr("&set Alpha"), this);
        connect(actionSetActiveAlpha, SIGNAL(triggered()), this, SLOT(slotSetActiveAlpha()));
 
        actionMovePositionUp = new QAction(tr("&move Up"), this);
        actionMovePositionUp->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Up));
        connect(actionMovePositionUp, SIGNAL(triggered()), this, SLOT(slotPositionMoveUp()));
 
        actionMovePositionDown = new QAction(tr("&move Down"), this);
        actionMovePositionDown->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Down));
        connect(actionMovePositionDown, SIGNAL(triggered()), this, SLOT(slotPositionMoveDown()));
 
        actionMovePositionLeft = new QAction(tr("&move Left"), this);
        actionMovePositionLeft->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Left));
        connect(actionMovePositionLeft, SIGNAL(triggered()), this, SLOT(slotPositionMoveLeft()));
 
        actionMovePositionRight = new QAction(tr("&move Right"), this);
        actionMovePositionRight->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Right));
        connect(actionMovePositionRight, SIGNAL(triggered()), this, SLOT(slotPositionMoveRight()));
 
        actionMoveLayerUp = new QAction(tr("&move Layer Up"), this);
        actionMoveLayerUp->setShortcut(QKeySequence(Qt::CTRL + Qt::ALT + Qt::Key_Up));
        connect(actionMoveLayerUp, SIGNAL(triggered()), this, SLOT(slotMoveLayerUp()));
 
        actionMoveLayerDown= new QAction(tr("&move Layer Down"), this);
        actionMoveLayerDown->setShortcut(QKeySequence(Qt::CTRL + Qt::ALT + Qt::Key_Down));
        connect(actionMoveLayerDown, SIGNAL(triggered()), this, SLOT(slotMoveLayerDown()));
 
        //Create Color Actions here
        actionColorPickerFirstColor = new QAction(tr("&Main"), this);
        connect(actionColorPickerFirstColor, SIGNAL(triggered()), this, SLOT(slotSetFirstColor()));
 
        actionColorPickerSecondColor = new QAction(tr("&Secondary"), this);
        connect(actionColorPickerSecondColor, SIGNAL(triggered()), this, SLOT(slotSetSecondColor()));
 
        actionColorSwitch = new QAction(tr("&Switch"), this);
        actionColorSwitch->setShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_S));
        connect(actionColorSwitch, SIGNAL(triggered()), this, SLOT(slotSwitchColor()));
 
        //Create Tool actions down here
        actionCreatePlainTool = new QAction(tr("&Plain"), this);
        connect(actionCreatePlainTool, SIGNAL(triggered()), this, SLOT(slotCreatePlainTool()));
 
        actionCreatePenTool = new QAction(tr("&Pen"),this);
        connect(actionCreatePenTool, SIGNAL(triggered()), this, SLOT(slotCreatePenTool()));
 
        actionCreateLineTool = new QAction(tr("&Line"), this);
        connect(actionCreateLineTool, SIGNAL(triggered()), this, SLOT(slotCreateLineTool()));
 
        actionCreateCircleTool = new QAction(tr("&Circle"), this);
        connect(actionCreateCircleTool, SIGNAL(triggered()), this, SLOT(slotCreateCircleTool()));
 
        actionCreateRectangleTool = new QAction(tr("&Rectangle"), this);
        connect(actionCreateRectangleTool, SIGNAL(triggered()), this, SLOT(slotCreateRectangleTool()));
 
        actionCreatePolygonTool = new QAction(tr("&Polygon"), this);
        connect(actionCreatePolygonTool, SIGNAL(triggered()), this, SLOT(slotCreatePolygonTool()));
 
        actionCreateFloodFillTool = new QAction(tr("&FloodFill"), this);
        connect(actionCreateFloodFillTool, SIGNAL(triggered()), this, SLOT(slotCreateFloodFillTool()));
 
        // Create about action and tie to IntelliPhotoGui::about()
        actionAboutDialog = new QAction(tr("&About"), this);
        connect(actionAboutDialog, SIGNAL(triggered()), this, SLOT(slotAboutDialog()));
 
        // Create about Qt action and tie to IntelliPhotoGui::aboutQt()
        actionAboutQtDialog = new QAction(tr("About &Qt"), this);
        connect(actionAboutQtDialog, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}
 
// Create the menubar
void IntelliPhotoGui::createMenus(){
        // Create Save As option and the list of file types
        saveAsMenu = new QMenu(tr("&Save As"), this);
        foreach (QAction *action, actionSaveAs)
        saveAsMenu->addAction(action);
 
 
        // Attach all actions to File
        fileMenu = new QMenu(tr("&File"), this);
        fileMenu->addAction(actionOpen);
        fileMenu->addMenu(saveAsMenu);
        fileMenu->addSeparator();
        fileMenu->addAction(actionExit);
 
        // Attach all actions to Options
        optionMenu = new QMenu(tr("&Options"), this);
        optionMenu->addAction(actionSetActiveLayer);
        optionMenu->addAction(actionSetActiveAlpha);
        optionMenu->addAction(actionMovePositionUp);
        optionMenu->addAction(actionMovePositionDown);
        optionMenu->addAction(actionMovePositionLeft);
        optionMenu->addAction(actionMovePositionRight);
        optionMenu->addAction(actionMoveLayerUp);
        optionMenu->addAction(actionMoveLayerDown);
 
        // Attach all actions to Layer
        layerMenu = new QMenu(tr("&Layer"), this);
        layerMenu->addAction(actionCreateNewLayer);
        layerMenu->addAction(actionDeleteLayer);
 
        //Attach all Color Options
        colorMenu = new QMenu(tr("&Color"), this);
        colorMenu->addAction(actionColorPickerFirstColor);
        colorMenu->addAction(actionColorPickerSecondColor);
        colorMenu->addAction(actionColorSwitch);
 
        //Attach all Tool Options
        toolMenu = new QMenu(tr("&Tools"), this);
        toolMenu->addAction(actionCreatePenTool);
        toolMenu->addAction(actionCreatePlainTool);
        toolMenu->addAction(actionCreateLineTool);
        toolMenu->addAction(actionCreateRectangleTool);
        toolMenu->addAction(actionCreateCircleTool);
        toolMenu->addAction(actionCreatePolygonTool);
        toolMenu->addAction(actionCreateFloodFillTool);
        toolMenu->addSeparator();
        toolMenu->addMenu(colorMenu);
 
        // Attach all actions to Help
        helpMenu = new QMenu(tr("&Help"), this);
        helpMenu->addAction(actionAboutDialog);
        helpMenu->addAction(actionAboutQtDialog);
 
        // Add menu items to the menubar
        menuBar()->addMenu(fileMenu);
        menuBar()->addMenu(optionMenu);
        menuBar()->addMenu(layerMenu);
        menuBar()->addMenu(toolMenu);
        menuBar()->addMenu(helpMenu);
}
 
void IntelliPhotoGui::createGui(){
        // create a central widget to work on
        centralGuiWidget = new QWidget(this);
        setCentralWidget(centralGuiWidget);
 
        // create the grid for the layout
        mainLayout = new QGridLayout(centralGuiWidget);
        centralGuiWidget->setLayout(mainLayout);
 
        // create Gui elements
        paintingArea = new PaintingArea();
 
        // set gui elements
        mainLayout->addWidget(paintingArea);
}
 
void IntelliPhotoGui::setIntelliStyle(){
        // Set the title
        setWindowTitle("IntelliPhoto Prototype");
        // Set style sheet
        this->setStyleSheet("background-color:rgb(64,64,64)");
        this->centralGuiWidget->setStyleSheet("color:rgb(255,255,255)");
        this->menuBar()->setStyleSheet("color:rgb(255,255,255)");
}
 
bool IntelliPhotoGui::maybeSave(){
        // Check for changes since last save
 
        // TODO insert variable for modified status here to make an save exit message
        if (false) {
                QMessageBox::StandardButton ret;
 
                // Painting is the title of the window
                // Add text and the buttons
                ret = QMessageBox::warning(this, tr("Painting"),
                                           tr("The image has been modified.\n"
                                              "Do you want to save your changes?"),
                                           QMessageBox::Save | QMessageBox::Discard
                                           | QMessageBox::Cancel);
 
                // If save button clicked call for file to be saved
                if (ret == QMessageBox::Save) {
                        return saveFile("png");
 
                        // If cancel do nothing
                } else if (ret == QMessageBox::Cancel) {
                        return false;
                }
        }
        return true;
}
 
bool IntelliPhotoGui::saveFile(const QByteArray &fileFormat){
        // Define path, name and default file type
        QString initialPath = QDir::currentPath() + "/untitled." + fileFormat;
 
        // Get selected file from dialog
        // Add the proper file formats and extensions
        QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
                                                        initialPath,
                                                        tr("%1 Files (*.%2);;All Files (*)")
                                                        .arg(QString::fromLatin1(fileFormat.toUpper()))
                                                        .arg(QString::fromLatin1(fileFormat)), nullptr, QFileDialog::DontUseNativeDialog);
 
        // If no file do nothing
        if (fileName.isEmpty()) {
                return false;
        } else {
                // Call for the file to be saved
                return paintingArea->save(fileName, fileFormat.constData());
        }
}