examples: add screenshots to widgets and others

Adding screenshots to:
- declarative
- multimedia
- network
- widgets

Renaming examples to avoid conflict on images names.

Task-number: PYSIDE-841
Pick-to: 6.1
Change-Id: I21f403ee62b45c0cb2a45eca6c5c99f11901610e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 31 insertions, 0 deletions

diff --git a/examples/widgets/richtext/textobject/doc/textobject.rst b/examples/widgets/richtext/textobject/doc/textobject.rst
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+TextObject Example
+==================
+
+A QTextDocument consists of a hierarchy of elements, such as text blocks and
+frames. A text object describes the structure or format of one or more of these
+elements. For instance, images imported from HTML are implemented using text
+objects. Text objects are used by the document's layout to lay out and render
+(paint) the document. Each object knows how to paint the elements they govern,
+and calculates their size.
+
+To be able to insert an SVG image into a text document, we create a text
+object, and implement painting for that object. This object can then be set on
+a QTextCharFormat. We also register the text object with the layout of the
+document, enabling it to draw QTextCharFormats governed by our text object. We
+can summarize the procedure with the following steps:
+
+ * Implement the text object.
+ * Register the text object with the layout of the text document.
+ * Set the text object on a QTextCharFormat.
+ * Insert a QChar::ObjectReplacementCharacter with that text char format into
+   the document.
+
+The example consists of the following classes:
+
+ * SvgTextObject implements the text object.
+ * Window shows a QTextEdit into which SVG images can be inserted.
+
+
+.. image:: textobject.png
+   :width: 400
+   :alt: TextObject Screenshot