Unify all render code in one library

Changes:
* Create render library (move util/render.cpp to render/render.cpp)
* Move app::Zoom class to render::Zoom
* Remove doc::Image::merge() member function
* Add gfx::Clip helper class (to clip dst/src rectangles before a blit)
* Move doc::composite_image() to render::composite_image()
* Remove doc::Sprite::render()
* Replace Sprite::getPixel() with render::get_sprite_pixel()
* Remove doc::layer_render() function
* Convert DitheringMethod to a enum class
* Add AppRender to configure a render::Render with the app configuration
* Move checked background preferences as document-specific configuration
* Add doc::Sprite::layer() and palette() member functions
* Add doc::Layer::cel() member function
* Add doc::Palette::entry() member function()
* Add doc::frame_t type
* Move create_palette_from_rgb/convert_pixel_format to render library
* ExportSpriteSheet doesn't need a temporary image now that we can specify
  the source rectangle in the render routine

Author: dacap

TODO.md

@@ -43,8 +43,17 @@
 
 # Refactoring
 
+* Convert doc::PixelFormat to a enum class
+* Add doc::Spec with width/height/channels/ColorMode/ncolors
+* Convert doc::LayerIndex -> typedef int doc::layer_t;
+* Convert doc::FrameNumber -> typedef int doc::frame_t;
+* Replace doc::LayerImage::getCel() with doc::Layer::cel()
+* Replace doc::Sprite::getPalette() with doc::Sprite::palette()
+* Replace doc::Palette::getEntry() with doc::Palette::entry()
+* Remove LayerFolder, replace it with an array of layers
+* Add new "level" into Layer class
 * Refactor src/file/ in several layers.
-* Use streams instead of FILEs.
+* Use streams instead of FILEs and create load/save tests with streams.
 * Destroy modules/gui.h.
 * Convert update_screen_for_document in an event from contexts or
   something similar.

data/pref.xml

@@ -46,6 +46,12 @@
       <value id="FAST" value="0" />
       <value id="ROTSPRITE" value="1" />
     </enum>
+    <enum id="BgType">
+      <value id="CHECKED_16x16" value="0" />
+      <value id="CHECKED_8x8" value="1" />
+      <value id="CHECKED_4x4" value="2" />
+      <value id="CHECKED_2x2" value="3" />
+    </enum>
   </types>
 
   <global>
@@ -116,6 +122,12 @@
       <option id="opacity" type="int" default="160" />
       <option id="auto_opacity" type="bool" default="true" />
     </section>
+    <section id="bg">
+      <option id="type" type="BgType" default="BgType::CHECKED_16x16" migrate="Option.CheckedBgType" />
+      <option id="zoom" type="bool" default="true" migrate="Option.CheckedBgZoom" />
+      <option id="color1" type="app::Color" default="app::Color::fromRgb(128, 128, 128)" migrate="Option.CheckedBgColor1" />
+      <option id="color2" type="app::Color" default="app::Color::fromRgb(192, 192, 192)" migrate="Option.CheckedBgColor2" />
+    </section>
     <section id="onionskin">
       <option id="active" type="bool" default="false" />
       <option id="prev_frames" type="int" default="1" />

src/CMakeLists.txt

@@ -28,6 +28,7 @@ set(aseprite_libraries
   cfg-lib
   css-lib
   doc-lib
+  render-lib
   scripting-lib
   undo-lib
   filters-lib
@@ -210,6 +211,7 @@ add_subdirectory(base)
 add_subdirectory(cfg)
 add_subdirectory(css)
 add_subdirectory(doc)
+add_subdirectory(render)
 add_subdirectory(filters)
 add_subdirectory(fixmath)
 add_subdirectory(gen)
@@ -328,6 +330,7 @@ endfunction()
 find_tests(base base-lib ${sys_libs})
 find_tests(gfx gfx-lib base-lib ${libs3rdparty} ${sys_libs})
 find_tests(doc doc-lib gfx-lib base-lib ${libs3rdparty} ${sys_libs})
+find_tests(render render-lib doc-lib gfx-lib base-lib ${libs3rdparty} ${sys_libs})
 find_tests(css css-lib gfx-lib base-lib ${libs3rdparty} ${sys_libs})
 find_tests(ui ui-lib she gfx-lib base-lib ${libs3rdparty} ${sys_libs})
 find_tests(app/file ${all_libs})

src/README.md

@@ -32,16 +32,17 @@ because they don't depend on any other component.
 ## Level 2
 
   * [filters](filters/) (base, doc, gfx): Effects for images.
+  * [render](render/) (base, gfx, doc): Library to render documents.
   * [ui](ui/) (base, gfx, she): Portable UI library (buttons, windows, text fields, etc.)
   * [updater](updater/) (base, net): Component to check for updates.
 
 ## Level 3
 
-  * [iff](iff/) (base, doc): Image File Formats library (load/save documents).
+  * [iff](iff/) (base, doc, render): Image File Formats library (load/save documents).
 
 ## Level 4
 
-  * [app](app/) (allegro, base, doc, filters, gfx, iff, scripting, she, ui, undo, updater, webserver)
+  * [app](app/) (allegro, base, doc, filters, gfx, iff, render, scripting, she, ui, undo, updater, webserver)
 
 ## Level 5
 

src/app/CMakeLists.txt

@@ -50,6 +50,7 @@ add_library(app-lib
   app.cpp
   app_menus.cpp
   app_options.cpp
+  app_render.cpp
   backup.cpp
   check_update.cpp
   color.cpp
@@ -303,10 +304,8 @@ add_library(app-lib
   util/msk_file.cpp
   util/pic_file.cpp
   util/range_utils.cpp
-  util/render.cpp
   webserver.cpp
   widget_loader.cpp
   xml_document.cpp
   xml_exception.cpp
-  zoom.cpp
   ${generated_files})

src/app/app.cpp

@@ -64,7 +64,6 @@
 #include "app/ui/toolbar.h"
 #include "app/ui_context.h"
 #include "app/util/boundary.h"
-#include "app/util/render.h"
 #include "app/webserver.h"
 #include "base/exception.h"
 #include "base/fs.h"
@@ -75,6 +74,7 @@
 #include "doc/layer.h"
 #include "doc/palette.h"
 #include "doc/sprite.h"
+#include "render/render.h"
 #include "scripting/engine.h"
 #include "she/display.h"
 #include "she/error.h"
@@ -153,8 +153,6 @@ void App::initialize(const AppOptions& options)
   // init editor cursor
   Editor::editor_cursor_init();
 
-  // Load RenderEngine configuration
-  RenderEngine::loadConfig();
   if (isPortable())
     PRINTF("Running in portable mode\n");
 
@@ -492,6 +490,11 @@ App::~App()
 
     m_instance = NULL;
   }
+  catch (const std::exception& e) {
+    she::error_message(e.what());
+
+    // no re-throw
+  }
   catch (...) {
     she::error_message("Error closing ASE.\n(uncaught exception)");
 

src/app/app_render.cpp

@@ -0,0 +1,76 @@
+/* Aseprite
+ * Copyright (C) 2001-2014  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_render.h"
+
+#include "app/app.h"
+#include "app/color_utils.h"
+#include "app/pref/preferences.h"
+#include "render/render.h"
+
+namespace app {
+
+AppRender::AppRender()
+{
+}
+
+AppRender::AppRender(app::Document* doc, doc::PixelFormat pixelFormat)
+{
+  setupBackground(doc, pixelFormat);
+}
+
+void AppRender::setupBackground(app::Document* doc, doc::PixelFormat pixelFormat)
+{
+  DocumentPreferences& docPref = App::instance()->preferences().document(doc);
+  render::BgType bgType;
+
+  gfx::Size tile;
+  switch (docPref.bg.type()) {
+    case app::gen::BgType::CHECKED_16x16:
+      bgType = render::BgType::CHECKED;
+      tile = gfx::Size(16, 16);
+      break;
+    case app::gen::BgType::CHECKED_8x8:
+      bgType = render::BgType::CHECKED;
+      tile = gfx::Size(8, 8);
+      break;
+    case app::gen::BgType::CHECKED_4x4:
+      bgType = render::BgType::CHECKED;
+      tile = gfx::Size(4, 4);
+      break;
+    case app::gen::BgType::CHECKED_2x2:
+      bgType = render::BgType::CHECKED;
+      tile = gfx::Size(2, 2);
+      break;
+    default:
+      bgType = render::BgType::TRANSPARENT;
+      break;
+  }
+
+  setBgType(bgType);
+  setBgZoom(docPref.bg.zoom());
+  setBgColor1(color_utils::color_for_image(docPref.bg.color1(), pixelFormat));
+  setBgColor2(color_utils::color_for_image(docPref.bg.color2(), pixelFormat));
+  setBgCheckedSize(tile);
+}
+
+}

src/app/zoom.cpp src/app/app_render.hsrc/app/zoom.cpp renamed to src/app/app_render.h

@@ -1,5 +1,5 @@
 /* Aseprite
- * Copyright (C) 2001-2014  David Capello
+ * Copyright (C) 2001-2013  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
@@ -16,32 +16,24 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#ifndef APP_RENDER_H_INCLUDED
+#define APP_RENDER_H_INCLUDED
+#pragma once
 
-#include "app/zoom.h"
+#include "doc/pixel_format.h"
+#include "render/render.h"
 
 namespace app {
+  class Document;
 
-void Zoom::in()
-{
-  if (m_den > 1) {
-    m_den--;
-  }
-  else if (m_num < 64) {
-    m_num++;
-  }
-}
+  class AppRender : public render::Render {
+  public:
+    AppRender();
+    AppRender(app::Document* doc, doc::PixelFormat pixelFormat);
 
-void Zoom::out()
-{
-  if (m_num > 1) {
-    m_num--;
-  }
-  else if (m_den < 32) {
-    m_den++;
-  }
-}
+    void setupBackground(app::Document* doc, doc::PixelFormat pixelFormat);
+  };
 
 } // namespace app
+
+#endif // APP_RENDER_H_INCLUDED

src/app/color_picker.cpp

@@ -28,6 +28,7 @@
 #include "doc/primitives.h"
 #include "doc/sprite.h"
 #include "gfx/point.h"
+#include "render/get_sprite_pixel.h"
 
 namespace app {
 
@@ -47,7 +48,7 @@ void ColorPicker::pickColor(const DocumentLocation& location,
   if (mode == FromComposition) { // Pick from the composed image
     m_color = app::Color::fromImage(
       location.sprite()->pixelFormat(),
-      location.sprite()->getPixel(pos.x, pos.y, location.frame()));
+      render::get_sprite_pixel(location.sprite(), pos.x, pos.y, location.frame()));
 
     doc::CelList cels;
     location.sprite()->pickCels(pos.x, pos.y, location.frame(), 128, cels);

src/app/commands/cmd_change_pixel_format.cpp

@@ -54,7 +54,7 @@ ChangePixelFormatCommand::ChangePixelFormatCommand()
             CmdUIOnlyFlag)
 {
   m_format = IMAGE_RGB;
-  m_dithering = DITHERING_NONE;
+  m_dithering = DitheringMethod::NONE;
 }
 
 void ChangePixelFormatCommand::onLoadParams(Params* params)
@@ -66,9 +66,9 @@ void ChangePixelFormatCommand::onLoadParams(Params* params)
 
   std::string dithering = params->get("dithering");
   if (dithering == "ordered")
-    m_dithering = DITHERING_ORDERED;
+    m_dithering = DitheringMethod::ORDERED;
   else
-    m_dithering = DITHERING_NONE;
+    m_dithering = DitheringMethod::NONE;
 }
 
 bool ChangePixelFormatCommand::onEnabled(Context* context)
@@ -79,7 +79,7 @@ bool ChangePixelFormatCommand::onEnabled(Context* context)
   if (sprite != NULL &&
       sprite->pixelFormat() == IMAGE_INDEXED &&
       m_format == IMAGE_INDEXED &&
-      m_dithering == DITHERING_ORDERED)
+      m_dithering == DitheringMethod::ORDERED)
     return false;
 
   return sprite != NULL;
@@ -93,7 +93,7 @@ bool ChangePixelFormatCommand::onChecked(Context* context)
   if (sprite != NULL &&
       sprite->pixelFormat() == IMAGE_INDEXED &&
       m_format == IMAGE_INDEXED &&
-      m_dithering == DITHERING_ORDERED)
+      m_dithering == DitheringMethod::ORDERED)
     return false;
 
   return