Add TogglePreview command (rename "mini-editor" to "preview")

Renamed Preview to FullscreenPreview to avoid confusion.
As an extra "to do", we need to add command aliases, so Preview matches
FullscreenPreview (mainly to keep user defined keyboard shortcuts).

data/gui.xml

@@ -90,7 +90,8 @@
       <key command="MakeUniqueEditor" shortcut="Ctrl+1" mac="Cmd+1" />
       <key command="SplitEditorVertically" shortcut="Ctrl+2" mac="Cmd+2" />
       <key command="SplitEditorHorizontally" shortcut="Ctrl+3" mac="Cmd+3" />
-      <key command="Preview" shortcut="F8" />
+      <key command="TogglePreview" shortcut="F7" />
+      <key command="FullscreenPreview" shortcut="F8" />
       <key command="ShowGrid" shortcut="Shift+G" />
       <key command="ShowPixelGrid" shortcut="Alt+Shift+G" />
       <key command="SnapToGrid" shortcut="Shift+S" />
@@ -572,7 +573,8 @@
         <item command="Timeline" text="&amp;Timeline">
           <param name="switch" value="true" />
         </item>
-        <item command="Preview" text="Previe&amp;w" />
+        <item command="TogglePreview" text="Previe&amp;w" />
+        <item command="FullscreenPreview" text="&amp;Fullscreen Preview" />
         <separator />
         <item command="Refresh" text="&amp;Refresh &amp;&amp; Reload Skin" />
       </menu>

src/app/CMakeLists.txt

@@ -135,6 +135,7 @@ add_library(app-lib
   commands/cmd_flatten_layers.cpp
   commands/cmd_flip.cpp
   commands/cmd_frame_properties.cpp
+  commands/cmd_fullscreen_preview.cpp
   commands/cmd_goto_frame.cpp
   commands/cmd_goto_layer.cpp
   commands/cmd_goto_tab.cpp
@@ -166,7 +167,6 @@ add_library(app-lib
   commands/cmd_palette_editor.cpp
   commands/cmd_paste.cpp
   commands/cmd_play_animation.cpp
-  commands/cmd_preview.cpp
   commands/cmd_refresh.cpp
   commands/cmd_remove_frame.cpp
   commands/cmd_remove_layer.cpp
@@ -185,6 +185,7 @@ add_library(app-lib
   commands/cmd_sprite_size.cpp
   commands/cmd_switch_colors.cpp
   commands/cmd_timeline.cpp
+  commands/cmd_toggle_preview.cpp
   commands/cmd_undo.cpp
   commands/cmd_unlink_cel.cpp
   commands/cmd_zoom.cpp

src/app/commands/cmd_fullscreen_preview.cpp

@@ -1,5 +1,5 @@
 /* Aseprite
- * Copyright (C) 2001-2013  David Capello
+ * Copyright (C) 2001-2015  David Capello
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -260,31 +260,31 @@ private:
   filters::TiledMode m_tiled;
 };
 
-class PreviewCommand : public Command {
+class FullscreenPreviewCommand : public Command {
 public:
-  PreviewCommand();
+  FullscreenPreviewCommand();
-  Command* clone() const override { return new PreviewCommand(*this); }
+  Command* clone() const override { return new FullscreenPreviewCommand(*this); }
 
 protected:
   bool onEnabled(Context* context);
   void onExecute(Context* context);
 };
 
-PreviewCommand::PreviewCommand()
+FullscreenPreviewCommand::FullscreenPreviewCommand()
-  : Command("Preview",
+  : Command("FullscreenPreview",
-            "Preview",
+            "Fullscreen Preview",
             CmdUIOnlyFlag)
 {
 }
 
-bool PreviewCommand::onEnabled(Context* context)
+bool FullscreenPreviewCommand::onEnabled(Context* context)
 {
   return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
                              ContextFlags::HasActiveSprite);
 }
 
 // Shows the sprite using the complete screen.
-void PreviewCommand::onExecute(Context* context)
+void FullscreenPreviewCommand::onExecute(Context* context)
 {
   Editor* editor = current_editor;
 
@@ -296,9 +296,9 @@ void PreviewCommand::onExecute(Context* context)
   window.openWindowInForeground();
 }
 
-Command* CommandFactory::createPreviewCommand()
+Command* CommandFactory::createFullscreenPreviewCommand()
 {
-  return new PreviewCommand;
+  return new FullscreenPreviewCommand;
 }
 
 } // namespace app

src/app/commands/cmd_toggle_preview.cpp

@@ -0,0 +1,79 @@
+/* Aseprite
+ * Copyright (C) 2001-2015  David Capello
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "app/app.h"
+#include "app/commands/command.h"
+#include "app/context.h"
+#include "app/ui/main_window.h"
+#include "app/ui/mini_editor.h"
+
+namespace app {
+
+class TogglePreviewCommand : public Command {
+public:
+  TogglePreviewCommand();
+  Command* clone() const override { return new TogglePreviewCommand(*this); }
+
+protected:
+  bool onEnabled(Context* context) override;
+  bool onChecked(Context* context) override;
+  void onExecute(Context* context) override;
+};
+
+TogglePreviewCommand::TogglePreviewCommand()
+  : Command("TogglePreview",
+            "Toggle Preview",
+            CmdUIOnlyFlag)
+{
+}
+
+bool TogglePreviewCommand::onEnabled(Context* context)
+{
+  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
+                             ContextFlags::HasActiveSprite);
+}
+
+bool TogglePreviewCommand::onChecked(Context* context)
+{
+  MainWindow* mainWin = App::instance()->getMainWindow();
+  if (!mainWin)
+    return false;
+
+  MiniEditorWindow* previewWin = mainWin->getMiniEditor();
+  return (previewWin && previewWin->isVisible());
+}
+
+void TogglePreviewCommand::onExecute(Context* context)
+{
+  MiniEditorWindow* previewWin =
+    App::instance()->getMainWindow()->getMiniEditor();
+
+  bool state = previewWin->isMiniEditorEnabled();
+  previewWin->setMiniEditorEnabled(!state);
+}
+
+Command* CommandFactory::createTogglePreviewCommand()
+{
+  return new TogglePreviewCommand;
+}
+
+} // namespace app

src/app/commands/commands_list.h

@@ -48,6 +48,7 @@ FOR_EACH_COMMAND(Eyedropper)
 FOR_EACH_COMMAND(FlattenLayers)
 FOR_EACH_COMMAND(Flip)
 FOR_EACH_COMMAND(FrameProperties)
+FOR_EACH_COMMAND(FullscreenPreview)
 FOR_EACH_COMMAND(GotoFirstFrame)
 FOR_EACH_COMMAND(GotoFrame)
 FOR_EACH_COMMAND(GotoLastFrame)
@@ -86,7 +87,6 @@ FOR_EACH_COMMAND(Options)
 FOR_EACH_COMMAND(PaletteEditor)
 FOR_EACH_COMMAND(Paste)
 FOR_EACH_COMMAND(PlayAnimation)
-FOR_EACH_COMMAND(Preview)
 FOR_EACH_COMMAND(Redo)
 FOR_EACH_COMMAND(Refresh)
 FOR_EACH_COMMAND(RemoveFrame)
@@ -114,6 +114,7 @@ FOR_EACH_COMMAND(SpriteProperties)
 FOR_EACH_COMMAND(SpriteSize)
 FOR_EACH_COMMAND(SwitchColors)
 FOR_EACH_COMMAND(Timeline)
+FOR_EACH_COMMAND(TogglePreview)
 FOR_EACH_COMMAND(Undo)
 FOR_EACH_COMMAND(UnlinkCel)
 FOR_EACH_COMMAND(Zoom)

src/app/ui/mini_editor.cpp

@@ -115,7 +115,7 @@ private:
 };
 
 MiniEditorWindow::MiniEditorWindow()
-  : Window(WithTitleBar, "Mini-Editor")
+  : Window(WithTitleBar, "Preview")
   , m_docView(NULL)
   , m_playButton(new MiniPlayButton())
   , m_playTimer(10)