From b5dc3d263effd555e855aaf1e8fb1efaee1666b1 Mon Sep 17 00:00:00 2001
From: David Capello <davidcapello@gmail.com>
Date: Wed, 7 Feb 2018 14:35:12 -0300
Subject: [PATCH] Add options to suppress specific warnings (fix #917)

---
 data/pref.xml                          | 14 +++++++-
 data/strings/en.ini                    | 13 +++++--
 data/widgets/advanced_mode.xml         |  4 +--
 data/widgets/gif_options.xml           | 11 +++---
 data/widgets/jpeg_options.xml          | 14 +++++---
 data/widgets/options.xml               | 18 +++++++++-
 src/app/commands/cmd_advanced_mode.cpp | 10 +++---
 src/app/commands/cmd_options.cpp       | 18 +++++++++-
 src/app/file/gif_format.cpp            | 47 +++++++++++++++-----------
 src/app/file/jpeg_format.cpp           | 44 +++++++++++++-----------
 src/app/file/png_format.cpp            |  3 +-
 src/app/pref/option.h                  | 24 ++++++++-----
 src/app/pref/preferences.cpp           |  7 +++-
 src/app/pref/preferences.h             |  6 +++-
 14 files changed, 161 insertions(+), 72 deletions(-)

diff --git a/data/pref.xml b/data/pref.xml
index 8d5ea2159..a66481875 100644
--- a/data/pref.xml
+++ b/data/pref.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Aseprite -->
-<!-- Copyright (C) 2014-2017 by David Capello -->
+<!-- Copyright (C) 2014-2018 by David Capello -->
 <preferences>
 
   <types>
@@ -245,6 +245,18 @@
     <section id="slices">
       <option id="default_color" type="app::Color" default="app::Color::fromRgb(0, 0, 255)" />
     </section>
+    <section id="advanced_mode">
+      <option id="show_alert" type="bool" default="true" migrate="AdvancedMode.Warning" />
+    </section>
+    <section id="gif">
+      <option id="show_alert" type="bool" default="true" />
+      <option id="interlaced" type="bool" default="false" migrate="GIF.Interlaced" />
+      <option id="loop" type="bool" default="true" migrate="GIF.Loop" />
+    </section>
+    <section id="jpeg">
+      <option id="show_alert" type="bool" default="true" />
+      <option id="quality" type="double" default="1.0" migrate="JPEG.Quality" />
+    </section>
   </global>
 
   <tool>
diff --git a/data/strings/en.ini b/data/strings/en.ini
index 6867d2f63..76a9ddde2 100644
--- a/data/strings/en.ini
+++ b/data/strings/en.ini
@@ -1,10 +1,9 @@
 # Aseprite
-# Copyright (C) 2016-2017 by David Capello
+# Copyright (C) 2016-2018 by David Capello
 
 [advanced_mode]
 title = Warning - Important
 description = You are going to enter in "Advanced Mode".
-dont_show_again = Don't show this again
 
 [statusbar_tips]
 all_layers_are_locked = All selected layers are locked
@@ -514,6 +513,11 @@ yes = &Yes
 no = &No
 cancel = &Cancel
 user_data = User Data
+dont_show = Don't show this alert again
+dont_show_tooltip = <<<END
+Check in case that you want to establish
+the given option as the default option.
+END
 
 [gif_options]
 title = GIF Options
@@ -792,6 +796,7 @@ skip = &Skip
 [options]
 title = Preferences
 section_general = General
+section_alerts = Alerts
 section_editor = Editor
 section_selection = Selection
 section_timeline = Timeline
@@ -942,6 +947,10 @@ the current frame & layer will be modified
 to focus the undid/redid change.
 END
 undo_allow_nonlinear_history = Allow non-linear history
+gif_options_alert = Show GIF options when saving .gif files
+jpeg_options_alert = Show JPEG options when saving .jpeg files
+advanced_mode_alert = Show alert when we enter to Advanced Mode
+reset_alerts = Reset all alert dialogs
 available_themes = Available Themes
 select_theme = &Select
 open_theme_folder = Open &Folder
diff --git a/data/widgets/advanced_mode.xml b/data/widgets/advanced_mode.xml
index 6f68edd0e..a3190f8e1 100644
--- a/data/widgets/advanced_mode.xml
+++ b/data/widgets/advanced_mode.xml
@@ -1,11 +1,11 @@
 <!-- Aseprite -->
-<!-- Copyright (C) 2001-2016 by David Capello -->
+<!-- Copyright (C) 2001-2018 by David Capello -->
 <gui>
 <window text="@.title" id="advanced_mode">
   <grid columns="1">
     <label text="@.description" />
     <label text="" id="warning_label" />
-    <check text="@.dont_show_again" id="donot_show" />
+    <check text="@general.dont_show" id="donot_show" tooltip="@general.dont_show_tooltip" />
     <separator horizontal="true" />
     <button text="@general.ok" closewindow="true" magnet="true" minwidth="60" cell_align="center" />
   </grid>
diff --git a/data/widgets/gif_options.xml b/data/widgets/gif_options.xml
index 37f5e3a9e..f045bb781 100644
--- a/data/widgets/gif_options.xml
+++ b/data/widgets/gif_options.xml
@@ -1,15 +1,16 @@
 <!-- Aseprite -->
-<!-- Copyright (C) 2014-2016 by David Capello -->
+<!-- Copyright (C) 2014-2018 by David Capello -->
 <gui>
-<window id="gif_options" text="@gif_options.title">
+<window id="gif_options" text="@.title">
   <vbox>
-    <separator text="@gif_options.general_options" left="true" horizontal="true" />
-    <check text="@gif_options.interlaced" id="interlaced" />
-    <check text="@gif_options.animation_loop" id="loop" />
+    <separator text="@.general_options" left="true" horizontal="true" />
+    <check text="@.interlaced" id="interlaced" />
+    <check text="@.animation_loop" id="loop" />
 
     <separator horizontal="true" />
 
     <hbox>
+      <check text="@general.dont_show" id="dont_show" tooltip="@general.dont_show_tooltip" />
       <boxfiller />
       <hbox homogeneous="true">
         <button text="@general.ok" closewindow="true" id="ok" magnet="true" minwidth="60" />
diff --git a/data/widgets/jpeg_options.xml b/data/widgets/jpeg_options.xml
index c9d988ad0..311b98c53 100644
--- a/data/widgets/jpeg_options.xml
+++ b/data/widgets/jpeg_options.xml
@@ -1,5 +1,5 @@
 <!-- Aseprite -->
-<!-- Copyright (C) 2001-2016 by David Capello -->
+<!-- Copyright (C) 2001-2018 by David Capello -->
 <gui>
 <window id="jpeg_options" text="@.title">
   <grid columns="2">
@@ -8,10 +8,14 @@
 
     <separator horizontal="true" cell_hspan="2" />
 
-    <box horizontal="true" homogeneous="true" cell_hspan="2" cell_align="right">
-      <button text="@general.ok" closewindow="true" id="ok" magnet="true" minwidth="60" />
-      <button text="@general.cancel" closewindow="true" />
-    </box>
+    <hbox cell_hspan="2">
+      <check text="@general.dont_show" id="dont_show" tooltip="@general.dont_show_tooltip" />
+      <boxfiller />
+      <hbox homogeneous="true">
+	<button text="@general.ok" closewindow="true" id="ok" magnet="true" minwidth="60" />
+	<button text="@general.cancel" closewindow="true" />
+      </hbox>
+    </hbox>
   </grid>
 </window>
 </gui>
diff --git a/data/widgets/options.xml b/data/widgets/options.xml
index 5e11587e2..5219f13df 100644
--- a/data/widgets/options.xml
+++ b/data/widgets/options.xml
@@ -1,5 +1,5 @@
 <!-- Aseprite -->
-<!-- Copyright (C) 2001-2017 by David Capello -->
+<!-- Copyright (C) 2001-2018 by David Capello -->
 <gui>
   <window id="options" text="@.title">
   <vbox>
@@ -7,6 +7,7 @@
       <view maxsize="true">
         <listbox id="section_listbox">
           <listitem text="@.section_general" value="section_general" />
+          <listitem text="@.section_alerts" value="section_alerts" />
           <listitem text="@.section_editor" value="section_editor" />
           <listitem text="@.section_selection" value="section_selection" />
           <listitem text="@.section_timeline" value="section_timeline" />
@@ -22,6 +23,8 @@
       </view>
 
       <panel id="panel" expansive="true">
+
+	<!-- General -->
         <vbox id="section_general">
           <separator text="@.section_general" horizontal="true" />
           <hbox>
@@ -264,6 +267,19 @@
           </vbox>
         </vbox>
 
+        <!-- Alerts -->
+        <vbox id="section_alerts">
+          <separator text="@.section_alerts" horizontal="true" />
+          <check id="gif_options_alert" text="@.gif_options_alert" />
+          <check id="jpeg_options_alert" text="@.jpeg_options_alert" />
+          <check id="advanced_mode_alert" text="@.advanced_mode_alert" />
+          <separator horizontal="true" />
+	  <hbox>
+	    <hbox expansive="true" />
+            <button id="reset_alerts" text="@.reset_alerts" />
+	  </hbox>
+        </vbox>
+
         <!-- Theme -->
         <vbox id="section_theme">
           <separator text="@.available_themes" horizontal="true" />
diff --git a/src/app/commands/cmd_advanced_mode.cpp b/src/app/commands/cmd_advanced_mode.cpp
index 4dbbe45c5..ef6f9495e 100644
--- a/src/app/commands/cmd_advanced_mode.cpp
+++ b/src/app/commands/cmd_advanced_mode.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.
@@ -10,7 +10,7 @@
 
 #include "app/app.h"
 #include "app/commands/command.h"
-#include "app/ini_file.h"
+#include "app/pref/preferences.h"
 #include "app/ui/keyboard_shortcuts.h"
 #include "app/ui/main_window.h"
 #include "ui/ui.h"
@@ -58,8 +58,10 @@ void AdvancedModeCommand::onExecute(Context* context)
 
   mainWindow->setMode(newMode);
 
+  auto& pref = Preferences::instance();
+
   if (oldMode == MainWindow::NormalMode &&
-      get_config_bool("AdvancedMode", "Warning", true)) {
+      pref.advancedMode.showAlert()) {
     Key* key = KeyboardShortcuts::instance()->command(this->id().c_str());
     if (!key->accels().empty()) {
       app::gen::AdvancedMode window;
@@ -69,7 +71,7 @@ void AdvancedModeCommand::onExecute(Context* context)
 
       window.openWindowInForeground();
 
-      set_config_bool("AdvancedMode", "Warning", !window.donotShow()->isSelected());
+      pref.advancedMode.showAlert(!window.donotShow()->isSelected());
     }
   }
 }
diff --git a/src/app/commands/cmd_options.cpp b/src/app/commands/cmd_options.cpp
index 2b71d75fc..4254442ee 100644
--- a/src/app/commands/cmd_options.cpp
+++ b/src/app/commands/cmd_options.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.
@@ -140,6 +140,12 @@ public:
   {
     sectionListbox()->Change.connect(base::Bind<void>(&OptionsWindow::onChangeSection, this));
 
+    // Alerts
+    gifOptionsAlert()->setSelected(m_pref.gif.showAlert());
+    jpegOptionsAlert()->setSelected(m_pref.jpeg.showAlert());
+    advancedModeAlert()->setSelected(m_pref.advancedMode.showAlert());
+    resetAlerts()->Click.connect(base::Bind<void>(&OptionsWindow::onResetAlerts, this));
+
     // Cursor
     paintingCursorType()->setSelectedItemIndex(int(m_pref.cursor.paintingCursorType()));
     cursorColor()->setColor(m_pref.cursor.cursorColor());
@@ -384,6 +390,10 @@ public:
       warnings += "<<- " + Strings::alerts_restart_by_preferences_save_recovery_data_period();
     }
 
+    m_pref.gif.showAlert(gifOptionsAlert()->isSelected());
+    m_pref.jpeg.showAlert(jpegOptionsAlert()->isSelected());
+    m_pref.advancedMode.showAlert(advancedModeAlert()->isSelected());
+
     m_pref.editor.zoomFromCenterWithWheel(zoomFromCenterWithWheel()->isSelected());
     m_pref.editor.zoomFromCenterWithKeys(zoomFromCenterWithKeys()->isSelected());
     m_pref.editor.showScrollbars(showScrollbars()->isSelected());
@@ -560,6 +570,12 @@ private:
       loadExtensions();
   }
 
+  void onResetAlerts() {
+    gifOptionsAlert()->setSelected(m_pref.gif.showAlert.defaultValue());
+    jpegOptionsAlert()->setSelected(m_pref.jpeg.showAlert.defaultValue());
+    advancedModeAlert()->setSelected(m_pref.advancedMode.showAlert.defaultValue());
+  }
+
   void onChangeBgScope() {
     int item = bgScope()->getSelectedItemIndex();
 
diff --git a/src/app/file/gif_format.cpp b/src/app/file/gif_format.cpp
index bb0c21563..447f9e457 100644
--- a/src/app/file/gif_format.cpp
+++ b/src/app/file/gif_format.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.
@@ -15,8 +15,8 @@
 #include "app/file/file_format.h"
 #include "app/file/format_options.h"
 #include "app/file/gif_options.h"
-#include "app/ini_file.h"
 #include "app/modules/gui.h"
+#include "app/pref/preferences.h"
 #include "app/util/autocrop.h"
 #include "base/file_handle.h"
 #include "base/fs.h"
@@ -25,7 +25,6 @@
 #include "render/ordered_dither.h"
 #include "render/quantization.h"
 #include "render/render.h"
-#include "ui/alert.h"
 #include "ui/button.h"
 
 #include "gif_options.xml.h"
@@ -897,6 +896,10 @@ public:
       m_clearColor = rgba(0, 0, 0, 0);
 
     const base::SharedPtr<GifOptions> gifOptions = fop->formatOptions();
+
+    LOG("GIF: Saving with options: interlaced=%d loop=%d\n",
+        gifOptions->interlaced(), gifOptions->loop());
+
     m_interlaced = gifOptions->interlaced();
     m_loop = (gifOptions->loop() ? 0: -1);
 
@@ -1361,34 +1364,38 @@ base::SharedPtr<FormatOptions> GifFormat::onGetFormatOptions(FileOp* fop)
     return gif_options;
 
   try {
-    // Configuration parameters
-    gif_options->setInterlaced(get_config_bool("GIF", "Interlaced", gif_options->interlaced()));
-    gif_options->setLoop(get_config_bool("GIF", "Loop", gif_options->loop()));
+    auto& pref = Preferences::instance();
 
-    // Load the window to ask to the user the GIF options he wants.
+    if (pref.isSet(pref.gif.interlaced))
+      gif_options->setInterlaced(pref.gif.interlaced());
+    if (pref.isSet(pref.gif.loop))
+      gif_options->setLoop(pref.gif.loop());
 
-    app::gen::GifOptions win;
-    win.interlaced()->setSelected(gif_options->interlaced());
-    win.loop()->setSelected(gif_options->loop());
+    if (pref.gif.showAlert()) {
+      app::gen::GifOptions win;
+      win.interlaced()->setSelected(gif_options->interlaced());
+      win.loop()->setSelected(gif_options->loop());
 
-    win.openWindowInForeground();
+      win.openWindowInForeground();
 
-    if (win.closer() == win.ok()) {
-      gif_options->setInterlaced(win.interlaced()->isSelected());
-      gif_options->setLoop(win.loop()->isSelected());
+      if (win.closer() == win.ok()) {
+        pref.gif.interlaced(win.interlaced()->isSelected());
+        pref.gif.loop(win.loop()->isSelected());
+        pref.gif.showAlert(!win.dontShow()->isSelected());
 
-      set_config_bool("GIF", "Interlaced", gif_options->interlaced());
-      set_config_bool("GIF", "Loop", gif_options->loop());
-    }
-    else {
-      gif_options.reset(NULL);
+        gif_options->setInterlaced(pref.gif.interlaced());
+        gif_options->setLoop(pref.gif.loop());
+      }
+      else {
+        gif_options.reset(nullptr);
+      }
     }
 
     return gif_options;
   }
   catch (std::exception& e) {
     Console::showException(e);
-    return base::SharedPtr<GifOptions>(0);
+    return base::SharedPtr<GifOptions>(nullptr);
   }
 }
 
diff --git a/src/app/file/jpeg_format.cpp b/src/app/file/jpeg_format.cpp
index b38237a68..7408c00c7 100644
--- a/src/app/file/jpeg_format.cpp
+++ b/src/app/file/jpeg_format.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.
@@ -16,17 +16,18 @@
 #include "app/file/file_format.h"
 #include "app/file/format_options.h"
 #include "app/find_widget.h"
-#include "app/ini_file.h"
 #include "app/load_widget.h"
+#include "app/pref/preferences.h"
 #include "base/file_handle.h"
 #include "base/memory.h"
 #include "doc/doc.h"
-#include "ui/ui.h"
 
 #include <csetjmp>
 #include <cstdio>
 #include <cstdlib>
 
+#include "jpeg_options.xml.h"
+
 #include "jpeglib.h"
 
 namespace app {
@@ -37,7 +38,8 @@ class JpegFormat : public FileFormat {
   // Data for JPEG files
   class JpegOptions : public FormatOptions {
   public:
-    float quality;              // 1.0 maximum quality.
+    JpegOptions() : quality(1.0f) { }    // 1.0 maximum quality.
+    float quality;
   };
 
   const char* onGetName() const override { return "jpeg"; }
@@ -238,8 +240,11 @@ bool JpegFormat::onSave(FileOp* fop)
   JSAMPARRAY buffer;
   JDIMENSION buffer_height;
   const base::SharedPtr<JpegOptions> jpeg_options = fop->formatOptions();
+  const int qualityValue = (int)MID(0, 100.0f * jpeg_options->quality, 100);
   int c;
 
+  LOG("JPEG: Saving with options: quality=%d\n", qualityValue);
+
   // Open the file for write in it.
   FileHandle handle(open_file_with_exception(fop->filename(), "wb"));
   FILE* file = handle.get();
@@ -266,7 +271,7 @@ bool JpegFormat::onSave(FileOp* fop)
   }
 
   jpeg_set_defaults(&cinfo);
-  jpeg_set_quality(&cinfo, (int)MID(0, 100.0f * jpeg_options->quality, 100), true);
+  jpeg_set_quality(&cinfo, qualityValue, true);
   cinfo.dct_method = JDCT_ISLOW;
   cinfo.smoothing_factor = 0;
 
@@ -363,24 +368,25 @@ base::SharedPtr<FormatOptions> JpegFormat::onGetFormatOptions(FileOp* fop)
     return jpeg_options;
 
   try {
-    // Configuration parameters
-    jpeg_options->quality = get_config_float("JPEG", "Quality", 1.0f);
+    auto& pref = Preferences::instance();
 
-    // Load the window to ask to the user the JPEG options he wants.
-    UniquePtr<ui::Window> window(app::load_widget<ui::Window>("jpeg_options.xml", "jpeg_options"));
-    ui::Slider* slider_quality = app::find_widget<ui::Slider>(window, "quality");
-    ui::Widget* ok = app::find_widget<ui::Widget>(window, "ok");
+    if (pref.isSet(pref.jpeg.quality))
+      jpeg_options->quality = pref.jpeg.quality();
 
-    slider_quality->setValue(int(jpeg_options->quality * 10.0f));
+    if (pref.jpeg.showAlert()) {
+      app::gen::JpegOptions win;
+      win.quality()->setValue(int(jpeg_options->quality * 10.0f));
+      win.openWindowInForeground();
 
-    window->openWindowInForeground();
+      if (win.closer() == win.ok()) {
+        pref.jpeg.quality(float(win.quality()->getValue()) / 10.0f);
+        pref.jpeg.showAlert(!win.dontShow()->isSelected());
 
-    if (window->closer() == ok) {
-      jpeg_options->quality = slider_quality->getValue() / 10.0f;
-      set_config_float("JPEG", "Quality", jpeg_options->quality);
-    }
-    else {
-      jpeg_options.reset(NULL);
+        jpeg_options->quality = pref.jpeg.quality();
+      }
+      else {
+        jpeg_options.reset(nullptr);
+      }
     }
 
     return jpeg_options;
diff --git a/src/app/file/png_format.cpp b/src/app/file/png_format.cpp
index f69200fdd..ae2089323 100644
--- a/src/app/file/png_format.cpp
+++ b/src/app/file/png_format.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.
@@ -13,7 +13,6 @@
 #include "app/file/file.h"
 #include "app/file/file_format.h"
 #include "app/file/format_options.h"
-#include "app/ini_file.h"
 #include "base/file_handle.h"
 #include "doc/doc.h"
 
diff --git a/src/app/pref/option.h b/src/app/pref/option.h
index 91686989d..6f2a08b7e 100644
--- a/src/app/pref/option.h
+++ b/src/app/pref/option.h
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2016  David Capello
+// Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -25,12 +25,24 @@ namespace app {
     std::string m_name;
   };
 
+  class OptionBase {
+  public:
+    OptionBase(Section* section, const char* id)
+      : m_section(section)
+      , m_id(id) {
+    }
+    const char* section() const { return m_section->name(); }
+    const char* id() const { return m_id; }
+  protected:
+    Section* m_section;
+    const char* m_id;
+  };
+
   template<typename T>
-  class Option {
+  class Option : public OptionBase {
   public:
     Option(Section* section, const char* id, const T& defaultValue = T())
-      : m_section(section)
-      , m_id(id)
+      : OptionBase(section, id)
       , m_default(defaultValue)
       , m_value(defaultValue)
       , m_dirty(false) {
@@ -60,8 +72,6 @@ namespace app {
       setValue(value);
     }
 
-    const char* section() const { return m_section->name(); }
-    const char* id() const { return m_id; }
     const T& defaultValue() const { return m_default; }
     void setDefaultValue(const T& defValue) {
       m_default = defValue;
@@ -91,8 +101,6 @@ namespace app {
     obs::signal<void(const T&)> AfterChange;
 
   private:
-    Section* m_section;
-    const char* m_id;
     T m_default;
     T m_value;
     bool m_dirty;
diff --git a/src/app/pref/preferences.cpp b/src/app/pref/preferences.cpp
index 7f88d12ea..6ab7a78e5 100644
--- a/src/app/pref/preferences.cpp
+++ b/src/app/pref/preferences.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.
@@ -77,6 +77,11 @@ void Preferences::save()
   flush_config_file();
 }
 
+bool Preferences::isSet(OptionBase& opt) const
+{
+  return (get_config_string(opt.section(), opt.id(), nullptr) != nullptr);
+}
+
 ToolPreferences& Preferences::tool(tools::Tool* tool)
 {
   ASSERT(tool != NULL);
diff --git a/src/app/pref/preferences.h b/src/app/pref/preferences.h
index e9f2fa8af..a16de8aa5 100644
--- a/src/app/pref/preferences.h
+++ b/src/app/pref/preferences.h
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2016  David Capello
+// Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -54,6 +54,10 @@ namespace app {
     void load();
     void save();
 
+    // Returns true if the given option was set by the user or false
+    // if it contains the default value.
+    bool isSet(OptionBase& opt) const;
+
     ToolPreferences& tool(tools::Tool* tool);
     DocumentPreferences& document(const app::Document* doc);