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<?xml version="1.0"?>
<!DOCTYPE Document SYSTEM "Document.dtd">
<Document>
<Title>Basic SVG Examples</Title>
<Description>
Shows some of the basic svg elements when placed in FO.
</Description>
<Chapter>
<Title>Examples</Title>
<Section>
<Title>Introduction</Title>
<Body>
<p>
These examples show the areas of SVG currently implemented.
</p>
<p>
This is provided so that others can see how to write the svg elements
and the result to expect.
</p>
</Body>
</Section>
<Section>
<Title>Graphic Elements</Title>
<SubSection>
<Title>SVG Examples</Title>
<ExternalDiagram file="ex-diagrams.xml">examples</ExternalDiagram>
<Body>
<p>
The SVG xml data is capable of any type of drawing,
from simple lines and shapes to complex shading, colouring
and transformations.
</p>
<p>
Currently only a small set of the possibilities are implemented.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Basic Shapes</Title>
<Body>
<p>
Lines can be draw, they map directly to PDF data.
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-lines</ExternalDiagram>
The example above shows some lines.
</p>
<p>
The rectangle is a simple shape, which maps directly
to PDF data.
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-rect</ExternalDiagram>
The example above is a simple rectangle, circle and ellipse.
</p>
<p>
The circle and ellipse are drawn by creating four curves
that make up the shape.
</p>
<p>
All shapes can have style applied to them. Style can also
be inherited from a surrounding <svg:g> element.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Curves and Paths</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-paths</ExternalDiagram>
Paths have no effect by themselves unless there
is some style applied. The default styling is set
by the svg area.
</p>
<p>
There are many possible parts to a path. There are simple
moveto, lineto and closepath commands. There are also
a number of curve commands that create Bezier curves etc.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Poly Elements</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-poly</ExternalDiagram>
Polylines and Polygons are multi-point lines
made up of straight lines. A polygon has a close path
at the end. <b>Note</b> how the numbers in the points
property can be over a number of lines to make it
easier to read.
</p>
<p>
The only difference between the polyline and the polygon
is that a polygon has a close path at the end.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Styling</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-style</ExternalDiagram>
Most elements can have style. The style information
is a list of properties separated by a ';'. The
property name and value are separated by a ':'.
Notice how the style of the sub-element overrides that
of all the ones in the heirarchy, the element also inherits
all the other style data.
</p>
</Body>
</SubSection>
<SubSection>
<Title>G Element</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-g</ExternalDiagram>
The G element can contain any other graphic
element, including other G elements. The purpose
of this is to enable style and transform to apply
to a group of graphic elements. The elements have no
other relationship except they are drawn together.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Transform</Title>
<Body>
<p>
The transform of an element can do all the usual
mathematical transforms. These can be represented by
a matrix for use in the pdf. The options include
translate, scale, rotate, shear etc.
</p>
<p>
The transform of an element is accumulative from
its ancestors. That is, if a transform is applied to
a <svg:g> element then any graphic element also
has that transform applied to it. If the child
element has a transform then its transform is also
applied after the transform of the parent.
</p>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-transform</ExternalDiagram>
</p>
</Body>
</SubSection>
<SubSection>
<Title>Text Elements</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-text</ExternalDiagram>
Text can be placed in any position and with style.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Clipping, Masking</Title>
<Body>
<p>
Not yet implemented.
The SVG area is clipped to start with.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Text Paths</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-textpath</ExternalDiagram>
The above example shows the <svg:use> and textPath
elements in action.
</p>
</Body>
</SubSection>
<SubSection>
<Title>Images</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-image</ExternalDiagram>
The above example shows the <svg:image> with position
and sizing elements in action.
</p>
</Body>
</SubSection>
<SubSection>
<Title>SVG Element</Title>
<Body>
<p>
<ExternalDiagram file="ex-diagrams.xml" showcode="true">ex-misc</ExternalDiagram>
Doing some silly stuff with svg elements.
</p>
</Body>
</SubSection>
</Section>
</Chapter>
</Document>
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