Add Shift+Enter (PlayPreviewAnimation command) to play/stop animation in preview window (fix #1774)

data/gui.xml

@@ -97,6 +97,7 @@
       <key command="GotoLastFrame" shortcut="End" />
       <key command="GotoFrame" shortcut="Alt+G" />
       <key command="PlayAnimation" shortcut="Enter" />
+      <key command="PlayPreviewAnimation" shortcut="Shift+Enter" />
       <!-- Cels -->
       <key command="ClearCel" />
       <key command="UnlinkCel" />

data/strings/en.ini

@@ -331,6 +331,7 @@ Paste = Paste
 PasteText = Insert Text
 PixelPerfectMode = Switch Pixel Perfect Mode
 PlayAnimation = Play Animation
+PlayPreviewAnimation = Play Preview Animation
 Redo = Redo
 Refresh = Refresh
 RemoveFrame = Remove Frame

src/app/commands/cmd_play_animation.cpp

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2017  David Capello
+// Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -8,17 +8,22 @@
 #include "config.h"
 #endif
 
+#include "app/app.h"
 #include "app/commands/command.h"
 #include "app/context.h"
 #include "app/context_access.h"
 #include "app/modules/editors.h"
 #include "app/pref/preferences.h"
 #include "app/ui/editor/editor.h"
+#include "app/ui/main_window.h"
+#include "app/ui/preview_editor.h"
 
 namespace app {
 
 using namespace ui;
 
+//////////////////////////////////////////////////////////////////////
+
 class PlayAnimationCommand : public Command {
 public:
   PlayAnimationCommand();
@@ -61,9 +66,47 @@ void PlayAnimationCommand::onExecute(Context* context)
                          Preferences::instance().editor.playAll());
 }
 
+//////////////////////////////////////////////////////////////////////
+
+class PlayPreviewAnimationCommand : public Command {
+public:
+  PlayPreviewAnimationCommand();
+  Command* clone() const override { return new PlayPreviewAnimationCommand(*this); }
+
+protected:
+  bool onEnabled(Context* context) override;
+  void onExecute(Context* context) override;
+};
+
+PlayPreviewAnimationCommand::PlayPreviewAnimationCommand()
+  : Command(CommandId::PlayPreviewAnimation(), CmdUIOnlyFlag)
+{
+}
+
+bool PlayPreviewAnimationCommand::onEnabled(Context* context)
+{
+  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
+                             ContextFlags::HasActiveSprite);
+}
+
+void PlayPreviewAnimationCommand::onExecute(Context* context)
+{
+  PreviewEditorWindow* preview = App::instance()->mainWindow()->getPreviewEditor();
+  if (!preview->isPreviewEnabled())
+    preview->setPreviewEnabled(true);
+  preview->pressPlayButton();
+}
+
+//////////////////////////////////////////////////////////////////////
+
 Command* CommandFactory::createPlayAnimationCommand()
 {
   return new PlayAnimationCommand;
 }
 
+Command* CommandFactory::createPlayPreviewAnimationCommand()
+{
+  return new PlayPreviewAnimationCommand;
+}
+
 } // namespace app

src/app/commands/commands_list.h

@@ -105,6 +105,7 @@ FOR_EACH_COMMAND(Paste)
 FOR_EACH_COMMAND(PasteText)
 FOR_EACH_COMMAND(PixelPerfectMode)
 FOR_EACH_COMMAND(PlayAnimation)
+FOR_EACH_COMMAND(PlayPreviewAnimation)
 FOR_EACH_COMMAND(Refresh)
 FOR_EACH_COMMAND(RemoveFrame)
 FOR_EACH_COMMAND(RemoveFrameTag)

src/app/ui/preview_editor.cpp

@@ -206,6 +206,13 @@ void PreviewEditorWindow::setPreviewEnabled(bool state)
   updateUsingEditor(current_editor);
 }
 
+void PreviewEditorWindow::pressPlayButton()
+{
+  m_playButton->setSelected(
+    !m_playButton->isSelected());
+  onPlayClicked();
+}
+
 bool PreviewEditorWindow::onProcessMessage(ui::Message* msg)
 {
   switch (msg->type()) {

src/app/ui/preview_editor.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2017  David Capello
+// Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -27,9 +27,9 @@ namespace app {
 
     bool isPreviewEnabled() const { return m_isEnabled; }
     void setPreviewEnabled(bool state);
+    void pressPlayButton();
 
     void updateUsingEditor(Editor* editor);
-
     Editor* relatedEditor() const { return m_relatedEditor; }
 
     // EditorObserver impl