This is a work-in-progress to create a consistent API and finally
separate the whole Aseprite base/gfx/ui libs into a reusable C++ library.
Classes:
app::IFileItem, app::AppMenuItem, app::skin::SkinPart,
gfx::Rect, gfx::Border, she::FileDialog,
ui::IButtonIcon, ui::Graphics, ui::Overlay, ui::Widget,
ui::ScrollableViewDelegate, and UI events
Now we generate the list of SkinTheme parts from the skin.xml file using
the gen utility.
Several refactors included in SkinTheme class to simplify code.
Changes:
* Move FreehandAlgorithm/InkType/RotationAlgorithm/SelectionMode to
app::tools namespace
* Removed ISettings, IToolSettings, IBrushSettings, ISelectionSettings,
and IColorSwatchesStore (and implementations from UISettingsImpl)
* Added app::tools::PreferenceGlue to do some adjustments that
UIToolSettingsImpl was doing
* Remove signals from App related to brush size/angle changes, and current
tool change (there events can be observed directly from Preferences)
* Remove ColorBar::FgColor/BgColor, these options can be observed from
Preferences::colorBar.fg/bgColor
