Add basic code for the Pin tool

src/tools/pin/pintool.cpp

@@ -0,0 +1,62 @@
+// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
+//
+// This file is part of Flameshot.
+//
+//     Flameshot is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+//
+//     Flameshot 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 General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with Flameshot.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "pintool.h"
+#include "src/tools/pin/pinwidget.h"
+
+PinTool::PinTool(QObject *parent) : AbstractActionTool(parent) {
+
+}
+
+bool PinTool::closeOnButtonPressed() const {
+    return true;
+}
+
+QIcon PinTool::icon(const QColor &background, bool inEditor) const {
+    Q_UNUSED(inEditor);
+    return QIcon(iconPath(background) + "pin.png");
+}
+QString PinTool::name() const {
+    return tr("Pin Tool");
+}
+
+QString PinTool::nameID() {
+    return "";
+}
+
+QString PinTool::description() const {
+    return tr("Pin image on the desktop");
+}
+
+QWidget* PinTool::widget() {
+    PinWidget *w = new PinWidget(m_pixmap);
+    w->setGeometry(m_geometry);
+    return w;
+}
+
+CaptureTool* PinTool::copy(QObject *parent) {
+    return new PinTool(parent);
+}
+
+void PinTool::pressed(const CaptureContext &context) {
+    emit requestAction(REQ_CAPTURE_DONE_OK);
+    m_geometry = context.selection;
+    m_geometry.setTopLeft(m_geometry.topLeft() + context.widgetOffset);
+    m_pixmap = context.selectedScreenshotArea();
+    emit requestAction(REQ_ADD_EXTERNAL_WIDGETS);
+
+}

src/tools/pin/pintool.h

@@ -0,0 +1,44 @@
+// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
+//
+// This file is part of Flameshot.
+//
+//     Flameshot is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+//
+//     Flameshot 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 General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with Flameshot.  If not, see <http://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include "src/tools/abstractactiontool.h"
+
+class PinTool : public AbstractActionTool {
+    Q_OBJECT
+public:
+    explicit PinTool(QObject *parent = nullptr);
+
+    bool closeOnButtonPressed() const;
+
+    QIcon icon(const QColor &background, bool inEditor) const override;
+    QString name() const override;
+    static QString nameID();
+    QString description() const override;
+
+    QWidget* widget() override;
+
+    CaptureTool* copy(QObject *parent = nullptr) override;
+
+public slots:
+    void pressed(const CaptureContext &context) override;
+
+private:
+    QRect m_geometry;
+    QPixmap m_pixmap;
+};

src/tools/pin/pinwidget.cpp

@@ -0,0 +1,75 @@
+// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
+//
+// This file is part of Flameshot.
+//
+//     Flameshot is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+//
+//     Flameshot 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 General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with Flameshot.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "pinwidget.h"
+#include <QLabel>
+#include <QVBoxLayout>
+#include <QWheelEvent>
+#include <QApplication>
+#include <QShortcut>
+
+PinWidget::PinWidget(const QPixmap &pixmap, QWidget *parent) :
+    QWidget(parent), m_pixmap(pixmap)
+{
+    setWindowFlags(Qt::WindowStaysOnTopHint
+                   | Qt::FramelessWindowHint);
+    m_layout = new QVBoxLayout(this);
+
+    m_label = new QLabel();
+    m_label->setPixmap(m_pixmap);
+    m_layout->addWidget(m_label);
+
+    new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
+    new QShortcut(Qt::Key_Escape, this, SLOT(close()));
+}
+
+void PinWidget::wheelEvent(QWheelEvent *e) {
+    int val = e->delta() > 0 ? 5 : -5;
+    int newWidth = qBound(50, m_label->width() + val, maximumWidth());
+    int newHeight = qBound(50, m_label->height() + val, maximumHeight());
+
+    QSize size(newWidth, newHeight);
+    setScaledPixmap(size);
+    adjustSize();
+
+    e->accept();
+}
+
+void PinWidget::mouseDoubleClickEvent(QMouseEvent *) {
+    close();
+}
+
+void PinWidget::mousePressEvent(QMouseEvent *e) {
+    m_dragStart = e->globalPos();
+    m_offsetX =  e->localPos().x() / width();
+    m_offsetY = e->localPos().y() / height();
+}
+
+void PinWidget::mouseMoveEvent(QMouseEvent *e) {
+    const QPoint delta = e->globalPos() - m_dragStart;
+    int offsetW = width() * m_offsetX;
+    int offsetH = height() * m_offsetY;
+    move(m_dragStart.x() + delta.x() - offsetW, m_dragStart.y() + delta.y() - offsetH);
+}
+
+void PinWidget::setScaledPixmap(const QSize &size) {
+    const qreal scale = qApp->devicePixelRatio();
+    QPixmap scaledPixmap = m_pixmap.scaled(size * scale, Qt::KeepAspectRatio,
+                                           Qt::SmoothTransformation);
+    scaledPixmap.setDevicePixelRatio(scale);
+    m_label->setPixmap(scaledPixmap);
+}

src/tools/pin/pinwidget.h

@@ -0,0 +1,44 @@
+// Copyright(c) 2017-2018 Alejandro Sirgo Rica & Contributors
+//
+// This file is part of Flameshot.
+//
+//     Flameshot is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+//
+//     Flameshot 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 General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with Flameshot.  If not, see <http://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <QWidget>
+
+class QVBoxLayout;
+class QLabel;
+
+class PinWidget : public QWidget {
+    Q_OBJECT
+public:
+    explicit PinWidget(const QPixmap &pixmap, QWidget *parent = nullptr);
+
+protected:
+    void wheelEvent(QWheelEvent *e);
+    void mouseDoubleClickEvent(QMouseEvent *);
+    void mousePressEvent(QMouseEvent *);
+    void mouseMoveEvent(QMouseEvent *);
+
+private:
+    void setScaledPixmap(const QSize &size);
+
+    QPixmap m_pixmap;
+    QVBoxLayout *m_layout;
+    QLabel *m_label;
+    QPoint m_dragStart;
+    qreal m_offsetX, m_offsetY;
+};

src/tools/toolfactory.cpp

@@ -33,6 +33,7 @@
 #include "launcher/applaunchertool.h"
 #include "blur/blurtool.h"
 #include "redo/redotool.h"
+#include "pin/pintool.h"
 
 ToolFactory::ToolFactory(QObject *parent) : QObject(parent) {
 
@@ -95,6 +96,9 @@ CaptureTool* ToolFactory::CreateTool(
     case CaptureButton::TYPE_BLUR:
         tool = new BlurTool(parent);
         break;
+    case CaptureButton::TYPE_PIN:
+        tool = new PinTool(parent);
+        break;
     default:
         tool = nullptr;
         break;