ScreenRecorder: Offer saving of the current cropped frame

The "crop and trim" dialog gets two new buttons. The first offers to
save the current, cropped frame as png image. The second one copies the
image into the clipboard. Copyuing into clipboard is also triggered by
the QKeySequence::Copy shortcut.

The location where the last image was saved gets remembered in the
settings.

Change-Id: Id4ac93838d59f6a6fa801456fe8d9c17d1e74154
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/screenrecorder/cropandtrim.cpp

@@ -7,6 +7,7 @@
 #include "screenrecordersettings.h"
 #include "screenrecordertr.h"
 
+#include <utils/fileutils.h>
 #include <utils/layoutbuilder.h>
 #include <utils/process.h>
 #include <utils/qtcsettings.h>
@@ -16,8 +17,10 @@
 
 #include <coreplugin/icore.h>
 
+#include <QClipboard>
 #include <QDialog>
 #include <QDialogButtonBox>
+#include <QGuiApplication>
 #include <QLabel>
 #include <QMouseEvent>
 #include <QPainter>
@@ -164,6 +167,14 @@ void CropScene::setImage(const QImage &image)
     resize(sceneSize);
 }
 
+QImage CropScene::croppedImage() const
+{
+    if (!m_image)
+        return {};
+
+    return m_image->copy(m_cropRect);
+}
+
 void CropScene::mouseMoveEvent(QMouseEvent *event)
 {
     const QPoint imagePos = toImagePos(event->pos());
@@ -267,6 +278,18 @@ CropWidget::CropWidget(QWidget *parent)
 
     m_warningIcon = new CropSizeWarningIcon(CropSizeWarningIcon::StandardVariant);
 
+    auto saveImageButton = new QToolButton;
+    saveImageButton->setToolTip(Tr::tr("Save current, cropped frame as image file..."));
+    saveImageButton->setIcon(Icons::SAVEFILE.icon());
+
+    auto copyImageToClipboardAction = new QAction(Tr::tr("Copy current, cropped frame as image "
+                                                         "into the Clipboard"), this);
+    copyImageToClipboardAction->setIcon(Icons::COPY.icon());
+    copyImageToClipboardAction->setShortcut(QKeySequence::Copy);
+
+    auto copyImageToClipboardButton = new QToolButton;
+    copyImageToClipboardButton->setDefaultAction(copyImageToClipboardAction);
+
     using namespace Layouting;
     Column {
         scrollArea,
@@ -278,6 +301,8 @@ CropWidget::CropWidget(QWidget *parent)
             m_resetButton,
             m_warningIcon,
             st,
+            saveImageButton,
+            copyImageToClipboardButton,
         },
         noMargin(),
     }.attachTo(this);
@@ -290,6 +315,25 @@ CropWidget::CropWidget(QWidget *parent)
     connect(m_resetButton, &QToolButton::pressed, this, [this] {
         m_cropScene->setFullySelected();
     });
+    connect(saveImageButton, &QToolButton::clicked, this, [this] {
+        FilePathAspect &lastDir = Internal::settings().lastSaveImageDirectory;
+        const QString ext(".png");
+        FilePath file = FileUtils::getSaveFilePath(nullptr, Tr::tr("Save Current Frame As"),
+                                                   lastDir(), "*" + ext);
+        if (!file.isEmpty()) {
+            if (!file.endsWith(ext))
+                file = file.stringAppended(ext);
+            lastDir.setValue(file.parentDir());
+            lastDir.writeToSettingsImmediatly();
+            const QImage image = m_cropScene->croppedImage();
+            image.save(file.toString());
+        }
+    });
+    connect(copyImageToClipboardAction, &QAction::triggered, this, [this] {
+        const QImage image = m_cropScene->croppedImage();
+        QClipboard *clipboard = QGuiApplication::clipboard();
+        clipboard->setImage(image);
+    });
 
     updateWidgets();
 }

src/plugins/screenrecorder/cropandtrim.h

@@ -26,6 +26,7 @@ public:
     void setFullySelected();
     QRect fullRect() const;
     void setImage(const QImage &image);
+    QImage croppedImage() const;
 
     const static int lineWidth = 1;
 

src/plugins/screenrecorder/screenrecordersettings.cpp

@@ -107,6 +107,10 @@ ScreenRecorderSettings::ScreenRecorderSettings()
     exportLastDirectory.setExpectedKind(PathChooser::ExistingDirectory);
     exportLastDirectory.setDefaultValue(FileUtils::homePath().toString());
 
+    lastSaveImageDirectory.setSettingsKey("LastSaveImageDir");
+    lastSaveImageDirectory.setExpectedKind(PathChooser::ExistingDirectory);
+    lastSaveImageDirectory.setDefaultValue(FileUtils::homePath().toString());
+
     recordFrameRate.setSettingsKey("RecordFrameRate");
     recordFrameRate.setDefaultValue(24);
     recordFrameRate.setLabelText(Tr::tr("Recording frame rate:"));

src/plugins/screenrecorder/screenrecordersettings.h

@@ -40,6 +40,7 @@ public:
     // Used in other places
     Utils::FilePathAspect lastOpenDirectory{this};
     Utils::FilePathAspect exportLastDirectory{this};
+    Utils::FilePathAspect lastSaveImageDirectory{this};
     Utils::IntegerAspect recordFrameRate{this};
     Utils::IntegerAspect recordScreenId{this};
     Utils::StringListAspect recordScreenCropRect{this};