Add Area element in the Export window (UI only) (#645)

data/pref.xml

@@ -508,6 +508,7 @@
     <section id="save_copy" canclear="true">
       <option id="filename" type="std::string" />
       <option id="resize_scale" type="double" default="1" />
+      <option id="area" type="std::string" />
       <option id="layer" type="std::string" />
       <option id="frame_tag" type="std::string" />
       <option id="ani_dir" type="doc::AniDir" default="doc::AniDir::FORWARD" />

data/strings/en.ini

@@ -630,6 +630,7 @@ sensors_tweaks = Sensor Threshold
 title = Export File
 output_file = Output File:
 resize = Resize:
+area = Area:
 layers = Layers:
 frames = Frames:
 anidir = Animation Direction:

data/widgets/export_file.xml

@@ -9,8 +9,8 @@
       <button id="output_filename_browse" text="..." style="mini_button" />
 
       <label id="resize_label" text="@.resize" />
-      <combobox id="resize" editable="true" suffix="%"
-                cell_align="horizontal" cell_hspan="2">
+      <hbox cell_hspan="2" cell_align="horizontal">
+        <combobox id="resize" editable="true" suffix="%" expansive="true">
           <listitem text="25" />
           <listitem text="50" />
           <listitem text="100" />
@@ -24,6 +24,9 @@
           <listitem text="900" />
           <listitem text="1000" />
         </combobox>
+        <label id="area_label" text="@.area" />
+        <combobox id="area" text="" cell_align="horizontal" cell_hspan="2" expansive="true" />
+      </hbox>
 
       <label id="layers_label" text="@.layers" />
       <combobox id="layers" text="" cell_align="horizontal" cell_hspan="2" />

src/app/ui/export_file_window.cpp

@@ -52,6 +52,7 @@ ExportFileWindow::ExportFileWindow(const Doc* doc)
 
   // Default export configuration
   setResizeScale(m_docPref.saveCopy.resizeScale());
+  fill_area_combobox(m_doc->sprite(), area(), m_docPref.saveCopy.area());
   fill_layers_combobox(m_doc->sprite(), layers(), m_docPref.saveCopy.layer());
   fill_frames_combobox(m_doc->sprite(), frames(), m_docPref.saveCopy.frameTag());
   fill_anidir_combobox(anidir(), m_docPref.saveCopy.aniDir());
@@ -97,6 +98,7 @@ void ExportFileWindow::savePref()
 {
   m_docPref.saveCopy.filename(outputFilenameValue());
   m_docPref.saveCopy.resizeScale(resizeValue());
+  m_docPref.saveCopy.area(areaValue());
   m_docPref.saveCopy.layer(layersValue());
   m_docPref.saveCopy.aniDir(aniDirValue());
   m_docPref.saveCopy.frameTag(framesValue());
@@ -116,6 +118,11 @@ double ExportFileWindow::resizeValue() const
   return std::clamp(value, 0.001, 100000000.0);
 }
 
+std::string ExportFileWindow::areaValue() const
+{
+  return area()->getValue();
+}
+
 std::string ExportFileWindow::layersValue() const
 {
   return layers()->getValue();

src/app/ui/export_file_window.h

@@ -28,6 +28,7 @@ namespace app {
 
     std::string outputFilenameValue() const;
     double resizeValue() const;
+    std::string areaValue() const;
     std::string layersValue() const;
     std::string framesValue() const;
     doc::AniDir aniDirValue() const;

src/app/ui/layer_frame_comboboxes.cpp

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019  Igara Studio S.A.
+// Copyright (C) 2019-2022  Igara Studio S.A.
 // Copyright (C) 2016-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -17,17 +17,27 @@
 #include "doc/layer.h"
 #include "doc/selected_frames.h"
 #include "doc/selected_layers.h"
+#include "doc/slice.h"
 #include "doc/sprite.h"
 #include "doc/tag.h"
 #include "ui/combobox.h"
 
 namespace app {
 
+const char* kWholeCanvas = "";
 const char* kAllLayers = "";
 const char* kAllFrames = "";
+const char* kSelectedCanvas = "**selected-canvas**";
 const char* kSelectedLayers = "**selected-layers**";
 const char* kSelectedFrames = "**selected-frames**";
 
+SliceListItem::SliceListItem(doc::Slice* slice)
+  : ListItem("Slice: " + slice->name())
+  , m_slice(slice)
+{
+  setValue(m_slice->name());
+}
+
 LayerListItem::LayerListItem(doc::Layer* layer)
   : ListItem(buildName(layer))
   , m_layer(layer)
@@ -57,6 +67,26 @@ FrameListItem::FrameListItem(doc::Tag* tag)
   setValue(m_tag->name());
 }
 
+void fill_area_combobox(const doc::Sprite* sprite, ui::ComboBox* area, const std::string& defArea)
+{
+  int i = area->addItem("Canvas");
+  dynamic_cast<ui::ListItem*>(area->getItem(i))->setValue(kWholeCanvas);
+
+  i = area->addItem("Selection");
+  dynamic_cast<ui::ListItem*>(area->getItem(i))->setValue(kSelectedCanvas);
+  if (defArea == kSelectedCanvas)
+    area->setSelectedItemIndex(i);
+
+  for (auto slice : sprite->slices()) {
+    if (slice->name().empty())
+      continue;
+
+    i = area->addItem(new SliceListItem(slice));
+    if (defArea == slice->name())
+      area->setSelectedItemIndex(i);
+  }
+}
+
 void fill_layers_combobox(const doc::Sprite* sprite, ui::ComboBox* layers, const std::string& defLayer)
 {
   int i = layers->addItem("Visible layers");

src/app/ui/layer_frame_comboboxes.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019  Igara Studio S.A.
+// Copyright (C) 2019-2022  Igara Studio S.A.
 // Copyright (C) 2016-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -18,6 +18,7 @@ namespace doc {
   class Layer;
   class SelectedFrames;
   class SelectedLayers;
+  class Slice;
   class Sprite;
   class Tag;
 }
@@ -30,11 +31,21 @@ namespace app {
   class RestoreVisibleLayers;
   class Site;
 
+  extern const char* kWholeCanvas;
   extern const char* kAllLayers;
   extern const char* kAllFrames;
+  extern const char* kSelectedCanvas;
   extern const char* kSelectedLayers;
   extern const char* kSelectedFrames;
 
+  class SliceListItem : public ui::ListItem {
+  public:
+    SliceListItem(doc::Slice* slice);
+    doc::Slice* slice() const { return m_slice; }
+  private:
+    doc::Slice* m_slice;
+  };
+
   class LayerListItem : public ui::ListItem {
   public:
     LayerListItem(doc::Layer* layer);
@@ -52,6 +63,7 @@ namespace app {
     doc::Tag* m_tag;
   };
 
+  void fill_area_combobox(const doc::Sprite* sprite, ui::ComboBox* area, const std::string& defArea);
   void fill_layers_combobox(const doc::Sprite* sprite, ui::ComboBox* layers, const std::string& defLayer);
   void fill_frames_combobox(const doc::Sprite* sprite, ui::ComboBox* frames, const std::string& defFrame);
   void fill_anidir_combobox(ui::ComboBox* anidir, doc::AniDir defAnidir);