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-/** \page dw-overview Dillo Widget Overview
-
-Note: If you are already familiar with the Gtk+-based version of Dw,
-read \ref dw-changes.
-
-
-The module Dw (Dillo Widget) is responsible for the low-level rendering of
-all resources, e.g. images, plain text, and HTML pages (this is the
-most complex type). Dw is \em not responsible for parsing HTML, or
-decoding image data. Furthermore, the document tree, which is planned
-for CSS, is neither a part of Dw, instead, it is a new module on top
-of Dw.
-
-The rendering, as done by Dw, is split into two phases:
-
-<ul>
-<li> the \em layouting, this means calculating the exact positions of
-     words, lines, etc. (in pixel position), and
-<li> the \em drawing, i.e. making the result of the layouting visible
-     on the screen.
-</ul>
-
-The result of the layouting allocates an area, which is called
-\em canvas.
-
-<h2>Structure</h2>
-
-The whole Dw module can be split into the following parts:
-
-\dot
-digraph G {
-   node [shape=record, fontname=Helvetica, fontsize=10];
-   edge [arrowhead="open", fontname=Helvetica, fontsize=10,
-         labelfontname=Helvetica, labelfontsize=10,
-         color="#404040", labelfontcolor="#000080"];
-
-   subgraph cluster_core {
-      style="dashed"; color="#000080"; fontname=Helvetica; fontsize=10;
-      label="Platform independent core";
-
-      Layout [URL="\ref dw::core::Layout"];
-      Platform [URL="\ref dw::core::Platform", color="#ff8080"];
-      View [URL="\ref dw::core::View", color="#ff8080"];
-      Widget [URL="\ref dw::core::Widget", color="#a0a0a0"];
-   }
-
-   subgraph cluster_fltk {
-      style="dashed"; color="#000080"; fontname=Helvetica; fontsize=10;
-      label="FLTK specific part (as an\nexample for the platform specific\n\
-implementations)";
-
-      subgraph cluster_fltkcore {
-         style="dashed"; color="#000080"; fontname=Helvetica; fontsize=10;
-         label="FLTK core";
-
-         FltkPlatform [URL="\ref dw::fltk::FltkPlatform"];
-         FltkView [URL="\ref dw::fltk::FltkView", color="#ff8080"];
-      }
-
-      FltkViewport [URL="\ref dw::fltk::FltkViewport"];
-      FltkPreview [URL="\ref dw::fltk::FltkPreview"];
-   }
-
-   subgraph cluster_widgets {
-      style="dashed"; color="#000080"; fontname=Helvetica; fontsize=10;
-      label="Platform independent widgets";
-
-      Textblock [URL="\ref dw::Textblock"];
-      AlignedTextblock [URL="\ref dw::AlignedTextblock", color="#a0a0a0"];
-      Table [URL="\ref dw::Table"];
-      Image [URL="\ref dw::Image"];
-      etc1 [label="..."];
-      etc2 [label="..."];
-   }
-
-   Layout -> Platform [headlabel="1", taillabel="1"];
-   Layout -> View [headlabel="*", taillabel="1"];
-
-   Layout -> Widget [headlabel="1", taillabel="1", label="topLevel"];
-   Widget -> Widget [headlabel="*", taillabel="1", label="children"];
-
-   Widget -> Textblock [arrowhead="none", arrowtail="empty", dir="both"];
-   Widget -> Table [arrowhead="none", arrowtail="empty", dir="both"];
-   Widget -> Image [arrowhead="none", arrowtail="empty", dir="both"];
-   Widget -> etc1 [arrowhead="none", arrowtail="empty", dir="both"];
-   Textblock -> AlignedTextblock [arrowhead="none", arrowtail="empty",
-                                  dir="both"];
-   AlignedTextblock -> etc2 [arrowhead="none", arrowtail="empty", dir="both"];
-
-   Platform -> FltkPlatform [arrowhead="none", arrowtail="empty", dir="both",
-                             style="dashed"];
-   FltkPlatform -> FltkView [headlabel="*", taillabel="1"];
-
-   View -> FltkView [arrowhead="none", arrowtail="empty", dir="both"];
-   FltkView -> FltkViewport [arrowhead="none", arrowtail="empty", dir="both",
-                             style="dashed"];
-   FltkView -> FltkPreview [arrowhead="none", arrowtail="empty", dir="both",
-                            style="dashed"];
-}
-\enddot
-
-<center>[\ref uml-legend "legend"]</center>
-
-\em Platform means in most cases the underlying UI toolkit
-(e.g. FLTK). A layout is bound to a specific platform, but multiple
-platforms may be handled in one program.
-
-A short overview:
-
-<ul>
-<li> dw::core::Layout is the central class, it manages the widgets and the
-     view, and provides delegation methods for the platform.
-
-<li> The layouting is done by a tree of widgets (details are described in
-     \ref dw-layout-widgets), also the drawing, which is finally delegated
-     to the view.
-
-<li> The view (implementation of dw::core::View) provides primitive methods
-     for drawing, but also have an influence on
-     the canvas size (via size hints). See \ref dw-layout-views for details.
-
-<li> Some platform dependencies are handled by implementations
-     of dw::core::Platform.
-</ul>
-
-
-<h3>Header Files</h3>
-
-The structures mentioned above can be found in the following header
-files:
-
-<ul>
-<li> Anything from the Dw core in core.hh. Do not include the single files.
-
-<li> The single widgets can be found in the respective header files, e.g.
-     image.hh for dw::Image.
-
-<li> The core of the FLTK implementation is defined in fltkcore.hh. This
-     includes dw::fltk::FltkPlatform, dw::fltk::FltkView, but not the concrete
-     view implementations.
-
-<li> The views can be found in single header files, e.g fltkviewport.hh for
-     dw::fltk::FltkViewport.
-</ul>
-
-
-<h2>Further Documentations</h2>
-
-A complete map can be found at \ref dw-map.
-
-<ul>
-<li> For learning, how to use Dw, read \ref dw-usage and related documents,
-     dw::core::style, dw::core::ui and \ref dw-images-and-backgrounds.
-<li> Advanced topics are described in \ref dw-layout-widgets,
-     \ref dw-widget-sizes and \ref dw-layout-views.
-</ul>
-
-*/