Merge e20ba70049 into cef92c1a38

We don't have an Aseprite.app target in cmake files yet, but we might
add it in a near future.

data/pref.xml

@@ -356,6 +356,7 @@
     <section id="file_selector">
       <option id="current_folder" type="std::string" default="&quot;&lt;empty&gt;&quot;" />
       <option id="zoom" type="double" default="1.0" />
+      <option id="show_hidden" type="bool" default="false" />
     </section>
     <section id="text_tool">
       <option id="font_face" type="std::string" />

data/strings/en.ini

@@ -765,6 +765,7 @@ pinned_folders = Pinned Folders
 recent_folders = Recent Folders
 all_formats = All formats
 all_files = All files
+show_hidden = Show hidden
 
 [filters]
 selected_cels = Selected
@@ -1834,6 +1835,18 @@ pixel_scale = Pixel Scale
 with_vars = Use CSS3 Variables
 generate_html = Generate Sample HTML File
 
+[shape]
+fill = Fill
+stroke = Stroke
+stroke_width = Stroke Width
+
+[text_tool]
+font_family = Font Family
+font_size = Font Size
+bold = Bold
+italic = Italic
+more_options = More Options
+
 [timeline_conf]
 position = Position:
 left = &Left

data/widgets/file_selector.xml

@@ -23,6 +23,7 @@
       <combobox id="location" expansive="true" />
       <button text="" id="refresh_button" style="refresh_button"
                 tooltip="@.refresh_button_tooltip" tooltip_dir="bottom" />
+      <check id="show_hidden_check" text="@.show_hidden" />
     </box>
     <vbox id="file_view_placeholder" expansive="true" />
     <grid columns="2">

laf

@@ -1 +1 @@
-Subproject commit 375629b7bda67f57988804a12e78c55afe005c9d
+Subproject commit 8ec4b553f1618f7a4b47cdcf4cfc2663266111ac

src/CMakeLists.txt

@@ -180,8 +180,8 @@ if(ENABLE_ASEPRITE_EXE)
 
   if(WIN32)
     set(main_resources
-      main/resources_win32.rc
-      main/settings.manifest)
+      main/win/resources_win32.rc
+      main/win/settings.manifest)
   endif()
 
   add_executable(${main_target}

src/app/commands/cmd_paste_text.cpp

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019-2024  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -10,6 +10,7 @@
 #endif
 
 #include "app/app.h"
+#include "app/color_utils.h"
 #include "app/commands/command.h"
 #include "app/console.h"
 #include "app/context.h"
@@ -88,10 +89,10 @@ void PasteTextCommand::onExecute(Context* ctx)
     std::string text = window.userText()->text();
     app::Color color = window.fontColor()->getColor();
 
-    doc::ImageRef image = render_text(
-      fontInfo,
-      text,
-      gfx::rgba(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha()));
+    ui::Paint paint = window.fontFace()->paint();
+    paint.color(color_utils::color_for_ui(color));
+
+    doc::ImageRef image = render_text(fontInfo, text, paint);
     if (image) {
       Sprite* sprite = editor->sprite();
       if (image->pixelFormat() != sprite->pixelFormat()) {

src/app/file_system.cpp

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019-2024  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -82,6 +82,9 @@ public:
   unsigned int m_version;
   bool m_removed;
   mutable bool m_is_folder;
+#ifdef _WIN32
+  bool m_isHidden = false;
+#endif
   std::atomic<double> m_thumbnailProgress;
   std::atomic<os::Surface*> m_thumbnail;
 #ifdef _WIN32
@@ -266,7 +269,7 @@ IFileItem* FileSystemModule::getRootFileItem()
     fileitem->m_pidl = pidl;
     fileitem->m_fullpidl = pidl;
 
-    SFGAOF attrib = SFGAO_FOLDER;
+    SFGAOF attrib = SFGAO_FOLDER | SFGAO_HIDDEN;
     shl_idesktop->GetAttributesOf(1, (LPCITEMIDLIST*)&pidl, &attrib);
 
     update_by_pidl(fileitem, attrib);
@@ -357,7 +360,7 @@ bool FileItem::isHidden() const
   ASSERT(m_displayname != NOTINITIALIZED);
 
 #ifdef _WIN32
-  return false;
+  return m_isHidden;
 #else
   return m_displayname[0] == '.';
 #endif
@@ -462,7 +465,7 @@ const FileItemList& FileItem::children()
         // Get the interface to enumerate subitems
         hr = pFolder->EnumObjects(
           reinterpret_cast<HWND>(os::System::instance()->defaultWindow()->nativeHandle()),
-          SHCONTF_FOLDERS | SHCONTF_NONFOLDERS,
+          SHCONTF_FOLDERS | SHCONTF_NONFOLDERS | SHCONTF_INCLUDEHIDDEN,
           &pEnum);
 
         if (hr == S_OK && pEnum) {
@@ -473,10 +476,9 @@ const FileItemList& FileItem::children()
           while (pEnum->Next(256, itempidl, &fetched) == S_OK && fetched > 0) {
             // Request the SFGAO_FOLDER attribute to know what of the
             // item is file or a folder
-            for (c = 0; c < fetched; ++c) {
-              attribs[c] = SFGAO_FOLDER;
-              pFolder->GetAttributesOf(1, (LPCITEMIDLIST*)itempidl, attribs + c);
-            }
+            for (c = 0; c < fetched; ++c)
+              attribs[c] = SFGAO_FOLDER | SFGAO_HIDDEN;
+            pFolder->GetAttributesOf(fetched, (LPCITEMIDLIST*)itempidl, attribs);
 
             // Generate the FileItems
             for (c = 0; c < fetched; ++c) {
@@ -755,6 +757,9 @@ static void update_by_pidl(FileItem* fileitem, SFGAOF attrib)
   // Is it a folder?
 
   fileitem->m_is_folder = calc_is_folder(fileitem->m_filename, attrib);
+  #if _WIN32
+  fileitem->m_isHidden = (attrib & SFGAO_HIDDEN ? true : false);
+  #endif
 
   // Get the name to display
 

src/app/resource_finder.cpp

@@ -213,7 +213,7 @@ void ResourceFinder::includeDesktopDir(const char* filename)
 #ifdef _WIN32
 
   std::vector<wchar_t> buf(MAX_PATH);
-  HRESULT hr = SHGetFolderPath(NULL, CSIDL_DESKTOPDIRECTORY, NULL, SHGFP_TYPE_DEFAULT, &buf[0]);
+  HRESULT hr = SHGetFolderPath(NULL, CSIDL_DESKTOP, NULL, SHGFP_TYPE_CURRENT, &buf[0]);
   if (hr == S_OK) {
     addPath(base::join_path(base::to_utf8(&buf[0]), filename));
   }

src/app/script/site_class.cpp

@@ -13,6 +13,8 @@
 #include "app/console.h"
 #include "app/context.h"
 #include "app/context_observer.h"
+#include "app/doc.h"
+#include "app/doc_undo.h"
 #include "app/script/docobj.h"
 #include "app/script/engine.h"
 #include "app/script/luacpp.h"

src/app/script/sprite_class.cpp

@@ -64,6 +64,7 @@
 #include "doc/tag.h"
 #include "doc/tileset.h"
 #include "doc/tilesets.h"
+#include "undo/undo_state.h"
 
 #include <algorithm>
 
@@ -1029,6 +1030,42 @@ int Sprite_set_useLayerUuids(lua_State* L)
   return 0;
 }
 
+int Sprite_get_undoHistory(lua_State* L)
+{
+  const auto* sprite = get_docobj<Sprite>(L, 1);
+  const auto* doc = static_cast<Doc*>(sprite->document());
+  const auto* history = doc->undoHistory();
+
+  if (!history) {
+    lua_pushnil(L);
+    return 1;
+  }
+
+  const undo::UndoState* currentState = history->currentState();
+  const undo::UndoState* s = history->firstState();
+  const bool canRedo = history->canRedo();
+  bool pastCurrent = !currentState && canRedo;
+
+  int undoSteps = 0;
+  int redoSteps = 0;
+  while (s) {
+    if (pastCurrent && canRedo)
+      redoSteps++;
+    else if (currentState || !canRedo)
+      undoSteps++;
+
+    if (s == currentState || !currentState)
+      pastCurrent = true;
+
+    s = s->next();
+  }
+
+  lua_newtable(L);
+  setfield_integer(L, "undoSteps", undoSteps);
+  setfield_integer(L, "redoSteps", redoSteps);
+  return 1;
+}
+
 const luaL_Reg Sprite_methods[] = {
   { "__eq",              Sprite_eq                },
   { "resize",            Sprite_resize            },
@@ -1094,6 +1131,7 @@ const Property Sprite_properties[] = {
   { "events",               Sprite_get_events,               nullptr                         },
   { "tileManagementPlugin", Sprite_get_tileManagementPlugin, Sprite_set_tileManagementPlugin },
   { "useLayerUuids",        Sprite_get_useLayerUuids,        Sprite_set_useLayerUuids        },
+  { "undoHistory",          Sprite_get_undoHistory,          nullptr                         },
   { nullptr,                nullptr,                         nullptr                         }
 };
 

src/app/ui/context_bar.cpp

@@ -1857,7 +1857,7 @@ private:
 
 class ContextBar::FontSelector : public FontEntry {
 public:
-  FontSelector(ContextBar* contextBar)
+  FontSelector(ContextBar* contextBar) : FontEntry(true) // With stroke and fill options
   {
     // Load the font from the preferences
     setInfo(FontInfo::getFromPreferences(), FontEntry::From::Init);
@@ -2559,6 +2559,11 @@ FontInfo ContextBar::fontInfo() const
   return m_fontSelector->info();
 }
 
+FontEntry* ContextBar::fontEntry()
+{
+  return m_fontSelector;
+}
+
 render::DitheringMatrix ContextBar::ditheringMatrix()
 {
   return m_ditheringSelector->ditheringMatrix();

src/app/ui/context_bar.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2018-2024  Igara Studio S.A.
+// Copyright (C) 2018-2025  Igara Studio S.A.
 // Copyright (C) 2001-2017  David Capello
 //
 // This program is distributed under the terms of
@@ -90,6 +90,7 @@ public:
 
   // For text tool
   FontInfo fontInfo() const;
+  FontEntry* fontEntry();
 
   // For gradients
   render::DitheringMatrix ditheringMatrix();

src/app/ui/editor/brush_preview.cpp

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019-2024  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -457,6 +457,8 @@ void BrushPreview::show(const gfx::Point& screenPos)
 
       // Here we re-use the cached surface
       if (!cached && m_uiLayer->surface()) {
+        m_uiLayer->surface()->clear();
+
         gfx::Rect layerBounds = m_uiLayer->surface()->bounds();
         ui::Graphics g(display, m_uiLayer->surface(), 0, 0);
 

src/app/ui/editor/editor.cpp

@@ -58,6 +58,7 @@
 #include "app/util/tile_flags_utils.h"
 #include "base/chrono.h"
 #include "base/convert_to.h"
+#include "base/scoped_value.h"
 #include "doc/doc.h"
 #include "doc/mask_boundaries.h"
 #include "doc/slice.h"
@@ -266,6 +267,23 @@ void Editor::setStateInternal(const EditorStatePtr& newState)
 {
   m_brushPreview.hide();
 
+  // Some onLeaveState impls (like the ones from MovingPixelsState,
+  // WritingTextState, MovingSelectionState) might generate a
+  // Tx/Transaction::commit(), which will add a new undo state,
+  // triggering a sprite change scripting event
+  // (SpriteEvents::onAddUndoState). This event could be handled by an
+  // extension and that extension might want to save the current
+  // sprite (e.g. calling Sprite_saveCopyAs, the kind of extension
+  // that takes snapshots after each sprite change). That will be a
+  // new Context::executeCommand() for the save command, generating a
+  // BeforeCommandExecution signal, getting back to onLeaveState
+  // again. In that case, we just ignore the reentry as the first
+  // onLeaveState should handle everything (to avoid an stack
+  // overflow/infinite recursion).
+  if (m_leavingState)
+    return;
+  base::ScopedValue leaving(m_leavingState, true);
+
   // Fire before change state event, set the state, and fire after
   // change state event.
   EditorState::LeaveAction leaveAction = m_state->onLeaveState(this, newState.get());

src/app/ui/editor/editor.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2018-2024  Igara Studio S.A.
+// Copyright (C) 2018-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -458,6 +458,13 @@ private:
 
   DocView* m_docView;
 
+  // Special flag to avoid re-entering a new state when we are leaving
+  // the current one. This avoids an infinite onLeaveState() recursion
+  // in some special cases when an extension (third-party code)
+  // creates a new sprite change in the same sprite change scripting
+  // event.
+  bool m_leavingState = false;
+
   // Last known mouse position received by this editor when the
   // mouse button was pressed. Used for auto-scrolling. To get the
   // current mouse position on the editor you can use

src/app/ui/editor/moving_slice_state.cpp

@@ -428,8 +428,8 @@ bool MovingSliceState::onMouseMove(Editor* editor, MouseMessage* msg)
   if (editor->slicesTransforms())
     drawExtraCel();
 
-  // Redraw the editor.
-  editor->invalidate();
+  // Notify changes
+  m_site.document()->notifyGeneralUpdate();
 
   // Use StandbyState implementation
   return StandbyState::onMouseMove(editor, msg);

src/app/ui/editor/writing_text_state.cpp

@@ -15,6 +15,7 @@
 #include "app/commands/command.h"
 #include "app/extra_cel.h"
 #include "app/fonts/font_info.h"
+#include "app/i18n/strings.h"
 #include "app/pref/preferences.h"
 #include "app/site.h"
 #include "app/tx.h"
@@ -43,12 +44,42 @@
   #include "os/skia/skia_surface.h"
 #endif
 
+#include <cmath>
+
 namespace app {
 
 using namespace ui;
 
+// Get ui::Paint to render text from context bar options / preferences
+static ui::Paint get_paint_for_text()
+{
+  ui::Paint paint;
+  if (auto* app = App::instance()) {
+    if (auto* ctxBar = app->contextBar())
+      paint = ctxBar->fontEntry()->paint();
+  }
+  paint.color(color_utils::color_for_ui(Preferences::instance().colorBar.fgColor()));
+  return paint;
+}
+
+static gfx::RectF calc_blob_bounds(const text::TextBlobRef& blob)
+{
+  gfx::RectF bounds = get_text_blob_required_bounds(blob);
+  ui::Paint paint = get_paint_for_text();
+  if (paint.style() == ui::Paint::Style::Stroke ||
+      paint.style() == ui::Paint::Style::StrokeAndFill) {
+    bounds.enlarge(std::ceil(paint.strokeWidth()));
+  }
+  return bounds;
+}
+
 class WritingTextState::TextEditor : public Entry {
 public:
+  enum TextPreview {
+    Intermediate, // With selection preview / user interface
+    Final,        // Final to be rendered in the cel
+  };
+
   TextEditor(Editor* editor, const Site& site, const gfx::Rect& bounds)
     : Entry(4096, "")
     , m_editor(editor)
@@ -61,7 +92,7 @@ public:
     setPersistSelection(true);
 
     createExtraCel(site, bounds);
-    renderExtraCelBase();
+    renderExtraCel(TextPreview::Intermediate);
 
     FontInfo fontInfo = App::instance()->contextBar()->fontInfo();
     if (auto font = Fonts::instance()->fontFromInfo(fontInfo))
@@ -76,36 +107,37 @@ public:
 
   // Returns the extra cel with the text rendered (but without the
   // selected text highlighted).
-  ExtraCelRef extraCel()
+  ExtraCelRef extraCel(const TextPreview textPreview)
   {
-    renderExtraCelBase();
-    renderExtraCelText(false);
+    renderExtraCel(textPreview);
     return m_extraCel;
   }
 
-  void setExtraCelBounds(const gfx::Rect& bounds)
+  void setExtraCelBounds(const gfx::RectF& bounds)
   {
     doc::Image* extraImg = m_extraCel->image();
-    if (!extraImg || bounds.w != extraImg->width() || bounds.h != extraImg->height()) {
+    if (!extraImg || std::ceil(bounds.w) != extraImg->width() ||
+        std::ceil(bounds.h) != extraImg->height()) {
       createExtraCel(m_editor->getSite(), bounds);
     }
     else {
+      m_baseBounds = bounds;
       m_extraCel->cel()->setBounds(bounds);
     }
-    renderExtraCelBase();
-    renderExtraCelText(true);
+    renderExtraCel(TextPreview::Intermediate);
   }
 
-  obs::signal<void(const gfx::Size&)> NewRequiredBounds;
+  obs::signal<void(const gfx::RectF&)> NewRequiredBounds;
 
 private:
   void createExtraCel(const Site& site, const gfx::Rect& bounds)
   {
+    m_baseBounds = bounds;
     m_extraCel->create(ExtraCel::Purpose::TextPreview,
                        site.tilemapMode(),
                        site.sprite(),
                        bounds,
-                       bounds.size(),
+                       gfx::Size(std::ceil(bounds.w), std::ceil(bounds.h)),
                        site.frame(),
                        255);
 
@@ -176,7 +208,7 @@ private:
 
     // Notify that we could make the text editor bigger to show this
     // text blob.
-    NewRequiredBounds(get_text_blob_required_size(blob));
+    NewRequiredBounds(calc_blob_bounds(blob));
   }
 
   void onPaint(PaintEvent& ev) override
@@ -205,8 +237,7 @@ private:
       }
 
       // Render extra cel with text + selected text
-      renderExtraCelBase();
-      renderExtraCelText(true);
+      renderExtraCel(TextPreview::Intermediate);
       m_doc->setExtraCel(m_extraCel);
 
       // Paint caret
@@ -227,76 +258,80 @@ private:
     }
   }
 
-  void renderExtraCelBase()
+  void renderExtraCel(const TextPreview textPreview)
   {
     doc::Image* extraImg = m_extraCel->image();
     ASSERT(extraImg);
     if (!extraImg)
       return;
 
-    const doc::Cel* extraCel = m_extraCel->cel();
+    extraImg->clear(extraImg->maskColor());
+
+    text::TextBlobRef blob = textBlob();
+    doc::ImageRef blobImage;
+    gfx::RectF bounds;
+    if (blob) {
+      const ui::Paint paint = get_paint_for_text();
+      bounds = calc_blob_bounds(blob);
+      blobImage = render_text_blob(blob, bounds, get_paint_for_text());
+      if (!blobImage)
+        return;
+
+      // Invert selected range in the image
+      if (textPreview == TextPreview::Intermediate) {
+        Range range;
+        getEntryThemeInfo(nullptr, nullptr, nullptr, &range);
+        if (!range.isEmpty()) {
+          gfx::RectF selectedBounds = getCharBoxBounds(range.from) | getCharBoxBounds(range.to - 1);
+
+          if (!selectedBounds.isEmpty()) {
+            selectedBounds.offset(-bounds.origin());
+
+#ifdef LAF_SKIA
+            sk_sp<SkSurface> skSurface = wrap_docimage_in_sksurface(blobImage.get());
+            os::SurfaceRef surface = base::make_ref<os::SkiaSurface>(skSurface);
+
+            os::Paint paint2 = paint;
+            paint2.blendMode(os::BlendMode::Xor);
+            paint2.style(os::Paint::Style::Fill);
+            surface->drawRect(selectedBounds, paint2);
+#endif // LAF_SKIA
+          }
+        }
+      }
+    }
+
+    doc::Cel* extraCel = m_extraCel->cel();
     ASSERT(extraCel);
     if (!extraCel)
       return;
 
-    extraImg->clear(extraImg->maskColor());
+    extraCel->setPosition(m_baseBounds.x + bounds.x, m_baseBounds.y + bounds.y);
+
     render::Render().renderLayer(extraImg,
                                  m_editor->layer(),
                                  m_editor->frame(),
                                  gfx::Clip(0, 0, extraCel->bounds()),
                                  doc::BlendMode::SRC);
-  }
 
-  void renderExtraCelText(const bool withSelection)
-  {
-    const auto textColor = color_utils::color_for_image(Preferences::instance().colorBar.fgColor(),
-                                                        IMAGE_RGB);
-
-    text::TextBlobRef blob = textBlob();
-    if (!blob)
-      return;
-
-    doc::ImageRef image = render_text_blob(blob, textColor);
-    if (!image)
-      return;
-
-    // Invert selected range in the image
-    if (withSelection) {
-      Range range;
-      getEntryThemeInfo(nullptr, nullptr, nullptr, &range);
-      if (!range.isEmpty()) {
-        gfx::RectF selectedBounds = getCharBoxBounds(range.from) | getCharBoxBounds(range.to - 1);
-
-        if (!selectedBounds.isEmpty()) {
-#ifdef LAF_SKIA
-          sk_sp<SkSurface> skSurface = wrap_docimage_in_sksurface(image.get());
-          os::SurfaceRef surface = base::make_ref<os::SkiaSurface>(skSurface);
-
-          os::Paint paint;
-          paint.blendMode(os::BlendMode::Xor);
-          paint.color(textColor);
-          surface->drawRect(selectedBounds, paint);
-#endif // LAF_SKIA
-        }
-      }
+    if (blobImage) {
+      doc::blend_image(extraImg,
+                       blobImage.get(),
+                       gfx::Clip(blobImage->bounds().size()),
+                       m_doc->sprite()->palette(m_editor->frame()),
+                       255,
+                       doc::BlendMode::NORMAL);
     }
-
-    doc::Image* extraImg = m_extraCel->image();
-    ASSERT(extraImg);
-    if (!extraImg)
-      return;
-
-    doc::blend_image(extraImg,
-                     image.get(),
-                     gfx::Clip(image->bounds().size()),
-                     m_doc->sprite()->palette(m_editor->frame()),
-                     255,
-                     doc::BlendMode::NORMAL);
   }
 
   Editor* m_editor;
   Doc* m_doc;
   ExtraCelRef m_extraCel;
+
+  // Initial bounds for the entry field. This can be modified later to
+  // render the text in case some initial letter/glyph needs some
+  // extra room at the left side.
+  gfx::Rect m_baseBounds;
 };
 
 WritingTextState::WritingTextState(Editor* editor, const gfx::Rect& bounds)
@@ -312,10 +347,10 @@ WritingTextState::WritingTextState(Editor* editor, const gfx::Rect& bounds)
   m_fontChangeConn =
     App::instance()->contextBar()->FontChange.connect(&WritingTextState::onFontChange, this);
 
-  m_entry->NewRequiredBounds.connect([this](const gfx::Size& blobSize) {
-    if (m_bounds.w < blobSize.w || m_bounds.h < blobSize.h) {
-      m_bounds.w = std::max(m_bounds.w, blobSize.w);
-      m_bounds.h = std::max(m_bounds.h, blobSize.h);
+  m_entry->NewRequiredBounds.connect([this](const gfx::RectF& blobBounds) {
+    if (m_bounds.w < blobBounds.w || m_bounds.h < blobBounds.h) {
+      m_bounds.w = std::max(m_bounds.w, blobBounds.w);
+      m_bounds.h = std::max(m_bounds.h, blobBounds.h);
       m_entry->setExtraCelBounds(m_bounds);
       m_entry->setBounds(calcEntryBounds());
     }
@@ -388,11 +423,11 @@ void WritingTextState::onCommitMouseMove(Editor* editor, const gfx::PointF& spri
   if (!m_movingBounds)
     return;
 
-  gfx::Point delta(spritePos - m_cursorStart);
+  gfx::PointF delta(spritePos - m_cursorStart);
   if (delta.x == 0 && delta.y == 0)
     return;
 
-  m_bounds.setOrigin(gfx::Point(delta + m_boundsOrigin));
+  m_bounds.setOrigin(delta + m_boundsOrigin);
   m_entry->setExtraCelBounds(m_bounds);
   m_entry->setBounds(calcEntryBounds());
 }
@@ -408,12 +443,7 @@ bool WritingTextState::onSetCursor(Editor* editor, const gfx::Point& mouseScreen
   return true;
 }
 
-bool WritingTextState::onKeyDown(Editor*, KeyMessage*)
-{
-  return false;
-}
-
-bool WritingTextState::onKeyUp(Editor*, KeyMessage* msg)
+bool WritingTextState::onKeyDown(Editor*, KeyMessage* msg)
 {
   // Cancel loop pressing Esc key
   if (msg->scancode() == ui::kKeyEsc) {
@@ -422,7 +452,17 @@ bool WritingTextState::onKeyUp(Editor*, KeyMessage* msg)
   // Drop text pressing Enter key
   else if (msg->scancode() == ui::kKeyEnter) {
     drop();
+    return true;
   }
+  return false;
+}
+
+bool WritingTextState::onKeyUp(Editor*, KeyMessage* msg)
+{
+  // Note: We cannot process kKeyEnter key here to drop the text as it
+  // could be received after the Enter key is pressed in the IME
+  // dialog to accept the composition (not to accept the text). So we
+  // process kKeyEnter in onKeyDown().
   return true;
 }
 
@@ -475,8 +515,8 @@ EditorState::LeaveAction WritingTextState::onLeaveState(Editor* editor, EditorSt
       // Paints the text in the active layer/sprite creating an
       // undoable transaction.
       Site site = m_editor->getSite();
-      ExtraCelRef extraCel = m_entry->extraCel();
-      Tx tx(site.document(), "Text Tool");
+      ExtraCelRef extraCel = m_entry->extraCel(TextEditor::Final);
+      Tx tx(site.document(), Strings::tools_text());
       ExpandCelCanvas expand(site, site.layer(), TiledMode::NONE, tx, ExpandCelCanvas::None);
 
       expand.validateDestCanvas(gfx::Region(extraCel->cel()->bounds()));
@@ -527,7 +567,7 @@ void WritingTextState::onFontChange(const FontInfo& fontInfo, FontEntry::From fr
 
     // This is useful to show changes to the anti-alias option
     // immediately.
-    auto dummy = m_entry->extraCel();
+    auto dummy = m_entry->extraCel(TextEditor::Intermediate);
 
     if (fromField == FontEntry::From::Popup) {
       if (m_entry)

src/app/ui/editor/writing_text_state.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (c) 2022-2024  Igara Studio S.A.
+// Copyright (c) 2022-2025  Igara Studio S.A.
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
@@ -59,7 +59,7 @@ private:
 
   DelayedMouseMove m_delayedMouseMove;
   Editor* m_editor;
-  gfx::Rect m_bounds;
+  gfx::RectF m_bounds;
   std::unique_ptr<TextEditor> m_entry;
 
   // True if the text was discarded.
@@ -71,7 +71,7 @@ private:
   bool m_mouseMoveReceived = false;
   bool m_movingBounds = false;
   gfx::PointF m_cursorStart;
-  gfx::Point m_boundsOrigin;
+  gfx::PointF m_boundsOrigin;
 
   obs::scoped_connection m_beforeCmdConn;
   obs::scoped_connection m_fontChangeConn;

src/app/ui/file_list.cpp

@@ -45,6 +45,7 @@ FileList::FileList()
   , m_multiselect(false)
   , m_zoom(1.0)
   , m_itemsPerRow(0)
+  , m_showHidden(Preferences::instance().fileSelector.showHidden())
 {
   setFocusStop(true);
   setDoubleBuffered(true);
@@ -173,6 +174,14 @@ void FileList::animateToZoom(const double zoom)
   startAnimation(ANI_ZOOM, 10);
 }
 
+void FileList::setShowHidden(const bool show)
+{
+  m_showHidden = show;
+  m_req_valid = false;
+  m_selected = nullptr;
+  regenerateList();
+}
+
 bool FileList::onProcessMessage(Message* msg)
 {
   switch (msg->type()) {
@@ -825,7 +834,7 @@ void FileList::regenerateList()
     for (FileItemList::iterator it = m_list.begin(); it != m_list.end();) {
       IFileItem* fileitem = *it;
 
-      if (fileitem->isHidden())
+      if (fileitem->isHidden() && !m_showHidden)
         it = m_list.erase(it);
       else if (!fileitem->isFolder() && !fileitem->hasExtension(m_exts)) {
         it = m_list.erase(it);

src/app/ui/file_list.h

@@ -54,6 +54,7 @@ public:
   double zoom() const { return m_zoom; }
   void setZoom(const double zoom);
   void animateToZoom(const double zoom);
+  void setShowHidden(const bool show);
 
   obs::signal<void()> FileSelected;
   obs::signal<void()> FileAccepted;
@@ -137,6 +138,7 @@ private:
   double m_toZoom;
 
   int m_itemsPerRow;
+  bool m_showHidden;
 };
 
 } // namespace app

src/app/ui/file_selector.cpp

@@ -316,6 +316,7 @@ FileSelector::FileSelector(FileSelectorType type) : m_type(type), m_navigationLo
   for (auto child : viewType()->children())
     child->setFocusStop(false);
 
+  showHiddenCheck()->setSelected(Preferences::instance().fileSelector.showHidden());
   m_fileList = new FileList();
   m_fileList->setId("fileview");
   m_fileName->setAssociatedFileList(m_fileList);
@@ -334,6 +335,10 @@ FileSelector::FileSelector(FileSelectorType type) : m_type(type), m_navigationLo
   viewType()->ItemChange.connect([this] { onChangeViewType(); });
   location()->CloseListBox.connect([this] { onLocationCloseListBox(); });
   fileType()->Change.connect([this] { onFileTypeChange(); });
+  showHiddenCheck()->Click.connect([this] {
+    Preferences::instance().fileSelector.showHidden(showHiddenCheck()->isSelected());
+    m_fileList->setShowHidden(showHiddenCheck()->isSelected());
+  });
   m_fileList->FileSelected.connect([this] { onFileListFileSelected(); });
   m_fileList->FileAccepted.connect([this] { onFileListFileAccepted(); });
   m_fileList->CurrentFolderChanged.connect([this] { onFileListCurrentFolderChanged(); });

src/app/ui/font_entry.cpp

@@ -12,10 +12,12 @@
 
 #include "app/app.h"
 #include "app/console.h"
+#include "app/i18n/strings.h"
 #include "app/recent_files.h"
 #include "app/ui/font_popup.h"
 #include "app/ui/skin/skin_theme.h"
 #include "base/contains.h"
+#include "base/convert_to.h"
 #include "base/scoped_value.h"
 #include "fmt/format.h"
 #include "ui/display.h"
@@ -262,22 +264,91 @@ void FontEntry::FontSize::onEntryChange()
   Change();
 }
 
-FontEntry::FontStyle::FontStyle() : ButtonSet(3, true)
+FontEntry::FontStyle::FontStyle(ui::TooltipManager* tooltips) : ButtonSet(3, true)
 {
   addItem("B");
   addItem("I");
   addItem("...");
   setMultiMode(MultiMode::Set);
+
+  tooltips->addTooltipFor(getItem(0), Strings::text_tool_bold(), BOTTOM);
+  tooltips->addTooltipFor(getItem(1), Strings::text_tool_italic(), BOTTOM);
+  tooltips->addTooltipFor(getItem(2), Strings::text_tool_more_options(), BOTTOM);
 }
 
-FontEntry::FontEntry()
+FontEntry::FontStroke::FontStroke(ui::TooltipManager* tooltips) : m_fill(2)
+{
+  auto* theme = skin::SkinTheme::get(this);
+
+  m_fill.addItem(theme->parts.toolFilledRectangle(), theme->styles.contextBarButton());
+  m_fill.addItem(theme->parts.toolRectangle(), theme->styles.contextBarButton());
+  m_fill.setSelectedItem(0);
+  m_fill.ItemChange.connect([this] { Change(); });
+
+  m_stroke.setText("0");
+  m_stroke.setSuffix("pt");
+  m_stroke.ValueChange.connect([this] { Change(); });
+
+  addChild(&m_fill);
+  addChild(&m_stroke);
+
+  tooltips->addTooltipFor(m_fill.getItem(0), Strings::shape_fill(), BOTTOM);
+  tooltips->addTooltipFor(m_fill.getItem(1), Strings::shape_stroke(), BOTTOM);
+  tooltips->addTooltipFor(&m_stroke, Strings::shape_stroke_width(), BOTTOM);
+}
+
+bool FontEntry::FontStroke::fill() const
+{
+  return const_cast<FontStroke*>(this)->m_fill.getItem(0)->isSelected();
+}
+
+float FontEntry::FontStroke::stroke() const
+{
+  return m_stroke.textDouble();
+}
+
+FontEntry::FontStroke::WidthEntry::WidthEntry() : ui::IntEntry(0, 100, this)
+{
+}
+
+void FontEntry::FontStroke::WidthEntry::onValueChange()
+{
+  ui::IntEntry::onValueChange();
+  ValueChange();
+}
+
+bool FontEntry::FontStroke::WidthEntry::onAcceptUnicodeChar(int unicodeChar)
+{
+  return (IntEntry::onAcceptUnicodeChar(unicodeChar) || unicodeChar == '.');
+}
+
+std::string FontEntry::FontStroke::WidthEntry::onGetTextFromValue(int value)
+{
+  return fmt::format("{:.1f}", value / 10.0);
+}
+
+int FontEntry::FontStroke::WidthEntry::onGetValueFromText(const std::string& text)
+{
+  return int(10.0 * base::convert_to<double>(text));
+}
+
+FontEntry::FontEntry(const bool withStrokeAndFill)
+  : m_style(&m_tooltips)
+  , m_stroke(withStrokeAndFill ? std::make_unique<FontStroke>(&m_tooltips) : nullptr)
 {
   m_face.setExpansive(true);
   m_size.setExpansive(false);
   m_style.setExpansive(false);
+
+  addChild(&m_tooltips);
   addChild(&m_face);
   addChild(&m_size);
   addChild(&m_style);
+  if (m_stroke)
+    addChild(m_stroke.get());
+
+  m_tooltips.addTooltipFor(&m_face, Strings::text_tool_font_family(), BOTTOM);
+  m_tooltips.addTooltipFor(m_size.getEntryWidget(), Strings::text_tool_font_size(), BOTTOM);
 
   m_face.setMinSize(gfx::Size(128 * guiscale(), 0));
 
@@ -299,6 +370,8 @@ FontEntry::FontEntry()
   });
 
   m_style.ItemChange.connect(&FontEntry::onStyleItemClick, this);
+  if (m_stroke)
+    m_stroke->Change.connect(&FontEntry::onStrokeChange, this);
 }
 
 // Defined here as FontPopup type is not fully defined in the header
@@ -327,6 +400,29 @@ void FontEntry::setInfo(const FontInfo& info, const From fromField)
   FontChange(m_info, fromField);
 }
 
+ui::Paint FontEntry::paint()
+{
+  ui::Paint paint;
+  ui::Paint::Style style = ui::Paint::Fill;
+
+  if (m_stroke) {
+    const float stroke = m_stroke->stroke();
+    if (m_stroke->fill()) {
+      if (stroke > 0.0f) {
+        style = ui::Paint::StrokeAndFill;
+        paint.strokeWidth(stroke);
+      }
+    }
+    else {
+      style = ui::Paint::Stroke;
+      paint.strokeWidth(stroke);
+    }
+  }
+
+  paint.style(style);
+  return paint;
+}
+
 void FontEntry::onStyleItemClick(ButtonSet::Item* item)
 {
   text::FontStyle style = m_info.style();
@@ -404,4 +500,9 @@ void FontEntry::onStyleItemClick(ButtonSet::Item* item)
   }
 }
 
+void FontEntry::onStrokeChange()
+{
+  FontChange(m_info, From::Paint);
+}
+
 } // namespace app

src/app/ui/font_entry.h

@@ -14,7 +14,11 @@
 #include "ui/box.h"
 #include "ui/button.h"
 #include "ui/combobox.h"
+#include "ui/int_entry.h"
+#include "ui/paint.h"
+#include "ui/tooltips.h"
 
+#include <memory>
 #include <string>
 
 namespace app {
@@ -30,18 +34,22 @@ public:
     Flags,
     Hinting,
     Popup,
+    Paint,
   };
 
-  FontEntry();
+  FontEntry(bool withStrokeAndFill);
   ~FontEntry();
 
   FontInfo info() { return m_info; }
   void setInfo(const FontInfo& info, From from);
 
+  ui::Paint paint();
+
   obs::signal<void(const FontInfo&, From)> FontChange;
 
 private:
   void onStyleItemClick(ButtonSet::Item* item);
+  void onStrokeChange();
 
   class FontFace : public SearchEntry {
   public:
@@ -73,13 +81,40 @@ private:
 
   class FontStyle : public ButtonSet {
   public:
-    FontStyle();
+    FontStyle(ui::TooltipManager* tooltips);
   };
 
+  class FontStroke : public HBox {
+  public:
+    FontStroke(ui::TooltipManager* tooltips);
+    bool fill() const;
+    float stroke() const;
+    obs::signal<void()> Change;
+
+  private:
+    class WidthEntry : public ui::IntEntry,
+                       public ui::SliderDelegate {
+    public:
+      WidthEntry();
+      obs::signal<void()> ValueChange;
+
+    private:
+      void onValueChange() override;
+      bool onAcceptUnicodeChar(int unicodeChar) override;
+      // SliderDelegate impl
+      std::string onGetTextFromValue(int value) override;
+      int onGetValueFromText(const std::string& text) override;
+    };
+    ButtonSet m_fill;
+    WidthEntry m_stroke;
+  };
+
+  ui::TooltipManager m_tooltips;
   FontInfo m_info;
   FontFace m_face;
   FontSize m_size;
   FontStyle m_style;
+  std::unique_ptr<FontStroke> m_stroke;
   bool m_lockFace = false;
 };
 

src/app/ui/font_popup.cpp

@@ -194,7 +194,11 @@ private:
       if (!blob)
         return;
 
-      doc::ImageRef image = render_text_blob(blob, gfx::rgba(0, 0, 0));
+      ui::Paint paint;
+      paint.color(gfx::rgba(0, 0, 0));
+      paint.style(ui::Paint::Fill);
+      const gfx::RectF textBounds = get_text_blob_required_bounds(blob);
+      doc::ImageRef image = render_text_blob(blob, textBounds, paint);
       if (!image)
         return;
 

src/app/util/render_text.cpp

@@ -60,7 +60,7 @@ private:
 
 } // anonymous namespace
 
-gfx::Size get_text_blob_required_size(const text::TextBlobRef& blob)
+gfx::RectF get_text_blob_required_bounds(const text::TextBlobRef& blob)
 {
   ASSERT(blob != nullptr);
 
@@ -74,32 +74,28 @@ gfx::Size get_text_blob_required_size(const text::TextBlobRef& blob)
     bounds.w = 1;
   if (bounds.h < 1)
     bounds.h = 1;
-  return gfx::Size(std::ceil(bounds.w), std::ceil(bounds.h));
+  return bounds;
 }
 
-doc::ImageRef render_text_blob(const text::TextBlobRef& blob, gfx::Color color)
+doc::ImageRef render_text_blob(const text::TextBlobRef& blob,
+                               const gfx::RectF& textBounds,
+                               const ui::Paint& paint)
 {
   ASSERT(blob != nullptr);
 
-  os::Paint paint;
-  // TODO offer Stroke, StrokeAndFill, and Fill styles
-  paint.style(os::Paint::Fill);
-  paint.color(color);
-
-  gfx::Size blobSize = get_text_blob_required_size(blob);
-
-  doc::ImageRef image(doc::Image::create(doc::IMAGE_RGB, blobSize.w, blobSize.h));
+  doc::ImageRef image(
+    doc::Image::create(doc::IMAGE_RGB, std::ceil(textBounds.w), std::ceil(textBounds.h)));
 
 #ifdef LAF_SKIA
   sk_sp<SkSurface> skSurface = wrap_docimage_in_sksurface(image.get());
   os::SurfaceRef surface = base::make_ref<os::SkiaSurface>(skSurface);
-  text::draw_text(surface.get(), blob, gfx::PointF(0, 0), &paint);
+  text::draw_text(surface.get(), blob, -textBounds.origin(), &paint);
 #endif // LAF_SKIA
 
   return image;
 }
 
-doc::ImageRef render_text(const FontInfo& fontInfo, const std::string& text, gfx::Color color)
+doc::ImageRef render_text(const FontInfo& fontInfo, const std::string& text, const ui::Paint& paint)
 {
   Fonts* fonts = Fonts::instance();
   ASSERT(fonts);
@@ -113,10 +109,6 @@ doc::ImageRef render_text(const FontInfo& fontInfo, const std::string& text, gfx
   const text::FontMgrRef fontMgr = fonts->fontMgr();
   ASSERT(fontMgr);
 
-  os::Paint paint;
-  paint.style(os::Paint::StrokeAndFill);
-  paint.color(color);
-
   // We have to measure all text runs which might use different
   // fonts (e.g. if the given font is not enough to shape other code
   // points/languages).

src/app/util/render_text.h

@@ -11,25 +11,28 @@
 
 #include "doc/image_ref.h"
 #include "gfx/color.h"
+#include "gfx/rect.h"
 #include "text/text_blob.h"
+#include "ui/paint.h"
 
 #include <string>
 
 namespace app {
 
-class Color;
 class FontInfo;
-namespace skin {
-class SkinTheme;
-}
 
-// Returns the exact bounds that are required to draw this TextBlob,
-// i.e. the image size that will be required in render_text_blob().
-gfx::Size get_text_blob_required_size(const text::TextBlobRef& blob);
+// Returns the exact bounds that are required to draw this TextBlob in
+// the origin point (0, 0), i.e. the image size that will be required
+// in render_text_blob().
+gfx::RectF get_text_blob_required_bounds(const text::TextBlobRef& blob);
 
-doc::ImageRef render_text_blob(const text::TextBlobRef& blob, gfx::Color color);
+doc::ImageRef render_text_blob(const text::TextBlobRef& blob,
+                               const gfx::RectF& textBounds,
+                               const ui::Paint& paint);
 
-doc::ImageRef render_text(const FontInfo& fontInfo, const std::string& text, gfx::Color color);
+doc::ImageRef render_text(const FontInfo& fontInfo,
+                          const std::string& text,
+                          const ui::Paint& paint);
 
 } // namespace app
 

src/app/widget_loader.cpp

@@ -532,7 +532,7 @@ Widget* WidgetLoader::convertXmlElementToWidget(const XMLElement* elem,
   }
   else if (elem_name == "font") {
     if (!widget)
-      widget = new FontEntry;
+      widget = new FontEntry(false);
   }
 
   // Was the widget created?

src/doc/brush.cpp

@@ -1,5 +1,5 @@
 // Aseprite Document Library
-// Copyright (C) 2019-2024  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2016  David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -20,11 +20,12 @@
 #include "doc/primitives.h"
 
 #include <algorithm>
+#include <atomic>
 #include <cmath>
 
 namespace doc {
 
-static int generation = 0;
+static std::atomic<int> g_generation = 0;
 
 Brush::Brush()
 {
@@ -300,7 +301,7 @@ void Brush::setCenter(const gfx::Point& center)
 // Cleans the brush's data (image and region).
 void Brush::clean()
 {
-  m_gen = ++generation;
+  m_gen = ++g_generation;
   m_image.reset();
   m_maskBitmap.reset();
   m_backupImage.reset();

src/main/osx/Entitlements.plist

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.cs.allow-dyld-environment-variables</key>
+    <true/>
+    <key>com.apple.security.cs.disable-library-validation</key>
+    <true/>
+</dict>
+</plist>

src/main/osx/Info.plist

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleDocumentTypes</key>
+    <array>
+        <dict>
+            <key>CFBundleTypeExtensions</key>
+            <array>
+                <string>aseprite</string>
+            </array>
+            <key>CFBundleTypeIconFile</key>
+            <string>Document.icns</string>
+            <key>CFBundleTypeName</key>
+            <string>Aseprite Sprite</string>
+            <key>CFBundleTypeRole</key>
+            <string>Editor</string>
+            <key>LSHandlerRank</key>
+            <string>Owner</string>
+        </dict>
+        <dict>
+            <key>CFBundleTypeExtensions</key>
+            <array>
+                <string>ase</string>
+                <string>bmp</string>
+                <string>flc</string>
+                <string>fli</string>
+                <string>gif</string>
+                <string>ico</string>
+                <string>jpeg</string>
+                <string>jpg</string>
+                <string>pcx</string>
+                <string>png</string>
+                <string>tga</string>
+            </array>
+            <key>CFBundleTypeIconFile</key>
+            <string>Document.icns</string>
+            <key>CFBundleTypeName</key>
+            <string>Aseprite Sprite</string>
+            <key>CFBundleTypeRole</key>
+            <string>Editor</string>
+        </dict>
+        <dict>
+            <key>CFBundleTypeExtensions</key>
+            <array>
+                <string>aseprite-extension</string>
+            </array>
+            <key>CFBundleTypeIconFile</key>
+            <string>Extension.icns</string>
+            <key>CFBundleTypeName</key>
+            <string>Aseprite Extension</string>
+            <key>CFBundleTypeRole</key>
+            <string>Editor</string>
+            <key>LSHandlerRank</key>
+            <string>Owner</string>
+        </dict>
+    </array>
+    <key>CFBundleDisplayName</key>
+    <string>Aseprite</string>
+    <key>CFBundleExecutable</key>
+    <string>aseprite</string>
+    <key>CFBundleIdentifier</key>
+    <string>org.aseprite.Aseprite</string>
+    <key>CFBundleName</key>
+    <string>Aseprite</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundleShortVersionString</key>
+    <string>1.3</string>
+    <key>CFBundleVersion</key>
+    <string>1.3</string>
+    <key>CFBundleIconFile</key>
+    <string>Aseprite.icns</string>
+    <key>LSApplicationCategoryType</key>
+    <string>public.app-category.graphics-design</string>
+    <key>NSHumanReadableCopyright</key>
+    <string>Copyright © 2001-2025, Igara Studio S.A.
+All rights reserved.</string>
+    <key>NSHighResolutionCapable</key>
+    <true/>
+    <key>NSRequiresAquaSystemAppearance</key>
+    <false/>
+</dict>
+</plist>

src/render/ordered_dither.cpp

@@ -1,5 +1,5 @@
 // Aseprite Render Library
-// Copyright (c) 2019-2022  Igara Studio S.A.
+// Copyright (c) 2019-2025  Igara Studio S.A.
 // Copyright (c) 2017 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -12,7 +12,6 @@
 #include "render/ordered_dither.h"
 
 #include "render/dithering.h"
-#include "render/dithering_matrix.h"
 
 #include <algorithm>
 #include <limits>
@@ -216,12 +215,105 @@ doc::color_t OrderedDither2::ditherRgbPixelToIndex(const DitheringMatrix& matrix
     return index;
 }
 
+void dither_two_color_case(DitheringAlgorithmBase& algorithm,
+                           const Dithering& dithering,
+                           const doc::Image* srcImage,
+                           doc::Image* dstImage,
+                           const doc::Palette* palette,
+                           const int color1Index,
+                           const int color2Index,
+                           const int maskIndex,
+                           TaskDelegate* delegate)
+{
+  const int luma1 = doc::rgba_luma(palette->getEntry(color1Index));
+  const int luma2 = doc::rgba_luma(palette->getEntry(color2Index));
+  const int lightIndex = (luma1 > luma2 ? color1Index : color2Index);
+  const int darkIndex = (luma1 > luma2 ? color2Index : color1Index);
+
+  const doc::LockImageBits<doc::RgbTraits> srcBits(srcImage);
+  doc::LockImageBits<doc::IndexedTraits> dstBits(dstImage);
+  auto srcIt = srcBits.begin();
+  auto dstIt = dstBits.begin();
+  const int w = srcImage->width();
+  const int h = srcImage->height();
+  for (int y = 0; y < h; ++y) {
+    for (int x = 0; x < w; ++x, ++srcIt, ++dstIt) {
+      ASSERT(srcIt != srcBits.end());
+      ASSERT(dstIt != dstBits.end());
+      *dstIt = algorithm.ditherRgbPixelToIndexForTwoColors(dithering.matrix(),
+                                                           *srcIt,
+                                                           x,
+                                                           y,
+                                                           lightIndex,
+                                                           darkIndex,
+                                                           maskIndex);
+
+      if (delegate) {
+        if (!delegate->continueTask())
+          return;
+      }
+    }
+
+    if (delegate) {
+      delegate->notifyTaskProgress(double(y + 1) / double(h));
+    }
+  }
+}
+
+// Check if we have only two different colors in the palette
+bool two_color_case_confirmation(const doc::RgbMap* rgbmap,
+                                 const doc::Palette* palette,
+                                 const bool is_background,
+                                 int& color1Index,
+                                 int& color2Index,
+                                 int& maskIndex)
+{
+  if (!is_background && rgbmap && rgbmap->maskIndex() != -1)
+    maskIndex = rgbmap->maskIndex();
+  else
+    maskIndex = palette->findMaskColor();
+  int i1 = -1;
+  int i2 = -1;
+  int i = 0;
+  for (; i < palette->size(); i++) {
+    if (i != maskIndex) {
+      i1 = i;
+      i++;
+      break;
+    }
+  }
+  for (; i < palette->size(); i++) {
+    if (i != maskIndex && palette->getEntry(i1) != palette->getEntry(i)) {
+      i2 = i;
+      i++;
+      break;
+    }
+  }
+  for (; i < palette->size(); i++) {
+    const doc::color_t c = palette->getEntry(i);
+    if (i != maskIndex && palette->getEntry(i1) != c && palette->getEntry(i2) != c) {
+      color1Index = -1;
+      color2Index = -1;
+      return false;
+    }
+  }
+  if (i1 == -1 || i2 == -1) {
+    color1Index = -1;
+    color2Index = -1;
+    return false;
+  }
+  color1Index = i1;
+  color2Index = i2;
+  return true;
+}
+
 void dither_rgb_image_to_indexed(DitheringAlgorithmBase& algorithm,
                                  const Dithering& dithering,
                                  const doc::Image* srcImage,
                                  doc::Image* dstImage,
                                  const doc::RgbMap* rgbmap,
                                  const doc::Palette* palette,
+                                 const bool is_background,
                                  TaskDelegate* delegate)
 {
   const int w = srcImage->width();
@@ -230,26 +322,48 @@ void dither_rgb_image_to_indexed(DitheringAlgorithmBase& algorithm,
   algorithm.start(srcImage, dstImage, dithering.factor());
 
   if (algorithm.dimensions() == 1) {
-    const doc::LockImageBits<doc::RgbTraits> srcBits(srcImage);
-    doc::LockImageBits<doc::IndexedTraits> dstBits(dstImage);
-    auto srcIt = srcBits.begin();
-    auto dstIt = dstBits.begin();
+    int color1Index = -1;
+    int color2Index = -1;
+    int maskIndex = -1;
+    if (two_color_case_confirmation(rgbmap,
+                                    palette,
+                                    is_background,
+                                    color1Index,
+                                    color2Index,
+                                    maskIndex)) {
+      dither_two_color_case(algorithm,
+                            dithering,
+                            srcImage,
+                            dstImage,
+                            palette,
+                            color1Index,
+                            color2Index,
+                            maskIndex,
+                            delegate);
+    }
+    else {
+      const doc::LockImageBits<doc::RgbTraits> srcBits(srcImage);
+      doc::LockImageBits<doc::IndexedTraits> dstBits(dstImage);
+      auto srcIt = srcBits.begin();
+      auto dstIt = dstBits.begin();
 
-    for (int y = 0; y < h; ++y) {
-      for (int x = 0; x < w; ++x, ++srcIt, ++dstIt) {
-        ASSERT(srcIt != srcBits.end());
-        ASSERT(dstIt != dstBits.end());
-        *dstIt = algorithm.ditherRgbPixelToIndex(dithering.matrix(), *srcIt, x, y, rgbmap, palette);
+      for (int y = 0; y < h; ++y) {
+        for (int x = 0; x < w; ++x, ++srcIt, ++dstIt) {
+          ASSERT(srcIt != srcBits.end());
+          ASSERT(dstIt != dstBits.end());
+          *dstIt =
+            algorithm.ditherRgbPixelToIndex(dithering.matrix(), *srcIt, x, y, rgbmap, palette);
+
+          if (delegate) {
+            if (!delegate->continueTask())
+              return;
+          }
+        }
 
         if (delegate) {
-          if (!delegate->continueTask())
-            return;
+          delegate->notifyTaskProgress(double(y + 1) / double(h));
         }
       }
-
-      if (delegate) {
-        delegate->notifyTaskProgress(double(y + 1) / double(h));
-      }
     }
   }
   else {

src/render/ordered_dither.h

@@ -1,5 +1,5 @@
 // Aseprite Render Library
-// Copyright (c) 2019 Igara Studio S.A.
+// Copyright (c) 2019-2025 Igara Studio S.A.
 // Copyright (c) 2001-2017 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -15,6 +15,7 @@
 #include "doc/rgbmap.h"
 #include "gfx/point.h"
 #include "gfx/size.h"
+#include "render/dithering_matrix.h"
 #include "render/task_delegate.h"
 
 namespace render {
@@ -50,6 +51,23 @@ public:
   {
     return 0;
   }
+
+  // Special case of two colors in the palette
+  static doc::color_t ditherRgbPixelToIndexForTwoColors(const DitheringMatrix& matrix,
+                                                        const doc::color_t color,
+                                                        const int x,
+                                                        const int y,
+                                                        const int lightIndex,
+                                                        const int darkIndex,
+                                                        const doc::color_t transparentIndex)
+  {
+    // Alpha=0, output transparent color
+    if (transparentIndex >= 0 && doc::rgba_geta(color) == 0)
+      return transparentIndex;
+
+    const int luma = doc::rgba_luma(color);
+    return (luma * (matrix.maxValue() + 1) > 255 * matrix(y, x)) ? lightIndex : darkIndex;
+  }
 };
 
 class OrderedDither : public DitheringAlgorithmBase {
@@ -86,6 +104,7 @@ void dither_rgb_image_to_indexed(DitheringAlgorithmBase& algorithm,
                                  doc::Image* dstImage,
                                  const doc::RgbMap* rgbmap,
                                  const doc::Palette* palette,
+                                 const bool is_background,
                                  TaskDelegate* delegate = nullptr);
 
 } // namespace render

src/render/quantization.cpp

@@ -1,5 +1,5 @@
 // Aseprite Render Library
-// Copyright (c) 2019-2022  Igara Studio S.A.
+// Copyright (c) 2019-2025  Igara Studio S.A.
 // Copyright (c) 2001-2018  David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -164,7 +164,14 @@ Image* convert_pixel_format(const Image* image,
         break;
     }
     if (dither)
-      dither_rgb_image_to_indexed(*dither, dithering, image, new_image, rgbmap, palette, delegate);
+      dither_rgb_image_to_indexed(*dither,
+                                  dithering,
+                                  image,
+                                  new_image,
+                                  rgbmap,
+                                  palette,
+                                  is_background,
+                                  delegate);
     return new_image;
   }
 

src/ui/box.cpp

@@ -106,7 +106,6 @@ void Box::onResize(ResizeEvent& ev)
         continue;                                                                                  \
                                                                                                    \
       int size = 0;                                                                                \
-      int sizeDiff = 0;                                                                            \
                                                                                                    \
       if (align() & HOMOGENEOUS) {                                                                 \
         if (i < visibleChildren - 1)                                                               \

src/ui/entry.cpp

@@ -128,6 +128,15 @@ int Entry::lastCaretPos() const
   return int(m_boxes.size() - 1);
 }
 
+gfx::Point Entry::caretPosOnScreen() const
+{
+  const gfx::Point caretPos = getCharBoxBounds(m_caret).point2();
+  const os::Window* nativeWindow = display()->nativeWindow();
+  const gfx::Point pos = nativeWindow->pointToScreen(caretPos + bounds().origin());
+
+  return pos;
+}
+
 void Entry::setCaretPos(const int pos)
 {
   gfx::Size caretSize = theme()->getEntryCaretSize(this);
@@ -160,6 +169,8 @@ void Entry::setCaretPos(const int pos)
     startTimer();
   m_state = true;
 
+  os::System::instance()->setTextInput(true, caretPosOnScreen());
+
   invalidate();
 }
 
@@ -251,7 +262,7 @@ gfx::Rect Entry::getEntryTextBounds() const
   return onGetEntryTextBounds();
 }
 
-gfx::Rect Entry::getCharBoxBounds(const int i)
+gfx::Rect Entry::getCharBoxBounds(const int i) const
 {
   ASSERT(i >= 0 && i < int(m_boxes.size()));
   if (i >= 0 && i < int(m_boxes.size()))
@@ -288,8 +299,9 @@ bool Entry::onProcessMessage(Message* msg)
       }
 
       // Start processing dead keys
-      if (m_translate_dead_keys)
-        os::System::instance()->setTextInput(true);
+      if (m_translate_dead_keys) {
+        os::System::instance()->setTextInput(true, caretPosOnScreen());
+      }
       break;
 
     case kFocusLeaveMessage:

src/ui/entry.h

@@ -43,6 +43,7 @@ public:
 
   int caretPos() const { return m_caret; }
   int lastCaretPos() const;
+  gfx::Point caretPosOnScreen() const;
 
   void setCaretPos(int pos);
   void setCaretToEnd();
@@ -76,7 +77,7 @@ public:
   obs::signal<void()> Change;
 
 protected:
-  gfx::Rect getCharBoxBounds(int i);
+  gfx::Rect getCharBoxBounds(int i) const;
 
   // Events
   bool onProcessMessage(Message* msg) override;

src/ui/int_entry.cpp

@@ -115,8 +115,8 @@ bool IntEntry::onProcessMessage(Message* msg)
     case kKeyDownMessage:
       if (hasFocus() && !isReadOnly()) {
         KeyMessage* keymsg = static_cast<KeyMessage*>(msg);
-        int chr = keymsg->unicodeChar();
-        if (chr >= 32 && (chr < '0' || chr > '9')) {
+        const int chr = keymsg->unicodeChar();
+        if (chr >= 32 && !onAcceptUnicodeChar(chr)) {
           // "Eat" all keys that aren't number
           return true;
         }
@@ -166,6 +166,11 @@ void IntEntry::onValueChange()
   // Do nothing
 }
 
+bool IntEntry::onAcceptUnicodeChar(const int unicodeChar)
+{
+  return (unicodeChar >= '0' && unicodeChar <= '9');
+}
+
 void IntEntry::openPopup()
 {
   m_slider->setValue(getValue());

src/ui/int_entry.h

@@ -1,5 +1,5 @@
 // Aseprite UI Library
-// Copyright (C) 2022  Igara Studio S.A.
+// Copyright (C) 2022-2025  Igara Studio S.A.
 // Copyright (C) 2001-2017  David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -36,6 +36,7 @@ protected:
 
   // New events
   virtual void onValueChange();
+  virtual bool onAcceptUnicodeChar(int unicodeChar);
 
   int m_min;
   int m_max;

tests/scripts/sprite.lua

@@ -228,3 +228,69 @@ do
   c = app.open(fn)
   assert(c.tileManagementPlugin == nil)
 end
+
+-- Undo History
+
+function test_undo_history()
+  local sprite = Sprite(1, 1)
+
+  assert(sprite.undoHistory.undoSteps == 0)
+  assert(sprite.undoHistory.redoSteps == 0)
+
+  sprite:resize(10, 10)
+
+  assert(sprite.undoHistory.undoSteps == 1)
+  assert(sprite.undoHistory.redoSteps == 0)
+
+  sprite:resize(10, 15)
+
+  assert(sprite.undoHistory.undoSteps == 2)
+  assert(sprite.undoHistory.redoSteps == 0)
+
+  sprite:resize(10, 30)
+
+  assert(sprite.undoHistory.undoSteps == 3)
+  assert(sprite.undoHistory.redoSteps == 0)
+
+  app.undo()
+  assert(sprite.undoHistory.undoSteps == 2)
+  assert(sprite.undoHistory.redoSteps == 1)
+
+  app.undo()
+  assert(sprite.undoHistory.undoSteps == 1)
+  assert(sprite.undoHistory.redoSteps == 2)
+
+  app.redo()
+  assert(sprite.undoHistory.undoSteps == 2)
+  assert(sprite.undoHistory.redoSteps == 1)
+
+  app.undo()
+  app.undo()
+
+  assert(sprite.undoHistory.undoSteps == 0)
+  assert(sprite.undoHistory.redoSteps == 3)
+
+  sprite:resize(10, 30)
+
+  if (app.preferences.undo.allow_nonlinear_history) then
+    assert(sprite.undoHistory.undoSteps == 4)
+    assert(sprite.undoHistory.redoSteps == 0)
+  else
+    assert(sprite.undoHistory.undoSteps == 1)
+    assert(sprite.undoHistory.redoSteps == 0)
+  end
+end
+
+do
+  local prevSetting = app.preferences.undo.allow_nonlinear_history
+  app.preferences.undo.allow_nonlinear_history = true
+  test_undo_history()
+  app.preferences.undo.allow_nonlinear_history = prevSetting
+end
+
+do
+  local prevSetting = app.preferences.undo.allow_nonlinear_history
+  app.preferences.undo.allow_nonlinear_history = false
+  test_undo_history()
+  app.preferences.undo.allow_nonlinear_history = prevSetting
+end