Paste from previous frame

app/src/mainwindow2.cpp

@@ -277,6 +277,7 @@ void MainWindow2::createMenus()
     connect(ui->actionRedo, &QAction::triggered, mEditor, &Editor::redo);
     connect(ui->actionCut, &QAction::triggered, mEditor, &Editor::copyAndCut);
     connect(ui->actionCopy, &QAction::triggered, mEditor, &Editor::copy);
+    connect(ui->actionPaste_Previous, &QAction::triggered, mEditor, &Editor::pasteFromPreviousFrame);
     connect(ui->actionPaste, &QAction::triggered, mEditor, &Editor::paste);
     connect(ui->actionClearFrame, &QAction::triggered, mEditor, &Editor::clearCurrentFrame);
     connect(mEditor->select(), &SelectionManager::selectionChanged, this, &MainWindow2::selectionChanged);
@@ -1194,6 +1195,7 @@ void MainWindow2::setupKeyboardShortcuts()
     ui->actionRedo->setShortcut(cmdKeySeq(CMD_REDO));
     ui->actionCut->setShortcut(cmdKeySeq(CMD_CUT));
     ui->actionCopy->setShortcut(cmdKeySeq(CMD_COPY));
+    ui->actionPaste_Previous->setShortcut(cmdKeySeq(CMD_PASTE_FROM_PREVIOUS));
     ui->actionPaste->setShortcut(cmdKeySeq(CMD_PASTE));
     ui->actionClearFrame->setShortcut(cmdKeySeq(CMD_CLEAR_FRAME));
     ui->actionSelect_All->setShortcut(cmdKeySeq(CMD_SELECT_ALL));

app/src/shortcutspage.cpp

@@ -302,6 +302,7 @@ static QString getHumanReadableShortcutName(const QString& cmdName)
         {CMD_ADD_FRAME, ShortcutsPage::tr("Add Frame", "Shortcut")},
         {CMD_CLEAR_FRAME, ShortcutsPage::tr("Clear Frame", "Shortcut")},
         {CMD_COPY, ShortcutsPage::tr("Copy", "Shortcut")},
+        {CMD_PASTE_FROM_PREVIOUS, ShortcutsPage::tr("Paste from Previous Keyframe", "Shortcut")},
         {CMD_CUT, ShortcutsPage::tr("Cut", "Shortcut")},
         {CMD_DELETE_CUR_LAYER, ShortcutsPage::tr("Delete Current Layer", "Shortcut")},
         {CMD_DESELECT_ALL, ShortcutsPage::tr("Deselect All", "Shortcut")},

app/ui/mainwindow2.ui

@@ -49,7 +49,7 @@
      <x>0</x>
      <y>0</y>
      <width>831</width>
-     <height>24</height>
+     <height>26</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -113,6 +113,7 @@
     <addaction name="actionCut"/>
     <addaction name="actionCopy"/>
     <addaction name="actionPaste"/>
+    <addaction name="actionPaste_Previous"/>
     <addaction name="actionClearFrame"/>
     <addaction name="separator"/>
     <addaction name="menuSelection"/>
@@ -1189,6 +1190,14 @@
     <string>Status Bar</string>
    </property>
   </action>
+  <action name="actionPaste_Previous">
+   <property name="text">
+    <string>Paste from Previous Keyframe</string>
+   </property>
+   <property name="toolTip">
+    <string>Paste from Previous Keyframe</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

core_lib/data/resources/kb.ini

@@ -16,6 +16,7 @@ CmdUndo=Ctrl+Z
 CmdRedo=Ctrl+Shift+Z
 CmdCut=Ctrl+X
 CmdCopy=Ctrl+C
+CmdPasteFromPrevious=Ctrl+Left
 CmdPaste=Ctrl+V
 CmdSelectAll=Ctrl+A
 CmdDeselectAll=Ctrl+D

core_lib/src/interface/editor.cpp

@@ -50,7 +50,6 @@ GNU General Public License for more details.
 #include "timeline.h"
 #include "util.h"
 
-
 Editor::Editor(QObject* parent) : QObject(parent)
 {
     mBackupIndex = -1;
@@ -557,6 +556,37 @@ void Editor::copyAndCut()
     }
 }
 
+void Editor::pasteFromPreviousFrame()
+{
+    Layer* currentLayer = layers()->currentLayer();
+    int prevFrame = currentLayer->getPreviousKeyFramePosition(mFrame);
+    if (!currentLayer->keyExists(mFrame) || prevFrame == mFrame)
+    {
+        return;
+    }
+
+    if (currentLayer->type() == Layer::BITMAP)
+    {
+        backup(tr("Paste from Previous Keyframe"));
+        BitmapImage* bitmapImage = static_cast<BitmapImage*>(currentLayer->getKeyFrameAt(prevFrame));
+        if (select()->somethingSelected())
+        {
+            BitmapImage copy = bitmapImage->copy(select()->mySelectionRect().toRect());
+            pasteToCanvas(&copy, mFrame);
+        }
+        else
+        {
+            pasteToCanvas(bitmapImage, mFrame);
+        }
+    }
+    else if (currentLayer->type() == Layer::VECTOR)
+    {
+        backup(tr("Paste from Previous Keyframe"));
+        VectorImage* vectorImage = static_cast<VectorImage*>(currentLayer->getKeyFrameAt(prevFrame));
+        pasteToCanvas(vectorImage, mFrame);
+    }
+}
+
 void Editor::pasteToCanvas(BitmapImage* bitmapImage, int frameNumber)
 {
     Layer* currentLayer = layers()->currentLayer();

core_lib/src/interface/editor.h

@@ -198,6 +198,7 @@ class Editor : public QObject
 
     void copy();
     void copyAndCut();
+    void pasteFromPreviousFrame();
     void paste();
 
     bool canCopy() const;

core_lib/src/util/pencildef.h

@@ -129,6 +129,7 @@ const static int MaxFramesBound = 9999;
 #define CMD_CUT "CmdCut"
 #define CMD_COPY "CmdCopy"
 #define CMD_PASTE "CmdPaste"
+#define CMD_PASTE_FROM_PREVIOUS "CmdPasteFromPrevious"
 #define CMD_SELECT_ALL "CmdSelectAll"
 #define CMD_DESELECT_ALL "CmdDeselectAll"
 #define CMD_CLEAR_FRAME "CmdClearFrame"