Dillo: Changes to the GTK+-based Release Version

Changes in Dw

Related to the FLTK port, there have been many changes, this is a (hopefully complete) list:

• Rendering abstraction, read Dillo Widget Overview and Layout and Views for details. Some important changes:

  • The underlying platform (e.g. the UI toolkit) is fully abstract, there are several platform independent structures replacing GTK+ structures, e.g. dw::core::Event.

  • The central class managing the widget tree is not anymore GtkDwViewport, but dw::core::Layout.

  • Drawing is done via dw::core::View, a pointer is passed to dw::core::Widget::draw.

  • The distinction between viewport coordinates and canvas coordinates (formerly world coordinates) has been mostly removed. (Only for views, it sometimes plays a role, see Layout and Views).

• Cursors have been moved to dw::core::style, see dw::core::style::Style::cursor. dw::core::Widget::setCursor is now protected (and so only called by widget implementations).

• World coordinates are now called canvas coordinates.

• There is now a distinction between dw::core::style::StyleAttrs and dw::core::style::Style.

• There is no base class for container widgets anymore. The former DwContainer::for_all has been removed, instead this functionality is now done via iterators (dw::core::Widget::iterator, dw::core::Iterator).

• DwPage is now called dw::Textblock, and DwAlignedPage dw::AlignedTextblock.

• dw::Textblock, all sub classes of it, and dw::Table do not read “limit_text_width” from the preferences, but get it as an argument. (May change again.)

• dw::Table has been rewritten.

• Instead of border_spacing in the old DwStyle, there are two attributes, dw::core::style::Style::hBorderSpacing and dw::core::style::Style::vBorderSpacing, since CSS allowes to specify two values. Without CSS, both attributes should have the same value.

• Images are handled differently, see Images and Backgrounds in Dw.

• Embedded UI widgets (formerly GtkWidget’s) are handled differently, see dw::core::ui.

• DwButton has been removed, instead, embedded UI widgets are used. See dw::core::ui and dw::core::ui::ComplexButtonResource.

Dw is now written C++, the transition should be obvious. All “Dw” prefixes have been removed, instead, namespaces are used now:

• dw::core contains the core,
• dw::core::style styles,
• dw::core::ui embedded UI resources,
• dw::fltk classes related to FLTK, and
• dw the widgets.

Documentation

The old documentation has been moved to: