Import of graphic, layout and image objects #2124

OCD format recognizes symbol-less map objects that, however, render in map colors. They are called "graphic objects". We create synthetic symbols for graphic objects on import. All the Mapper symbols have the same name and number reflecting the anonymous nature of the source graphic objects. Closes OpenOrienteeringGH-959.

There is a flag in the .ocd file to hide all graphics objects which was not yet evaluated. The status of the flag is now read and applied to all imported graphic objects.

Layout objects (line, area, text) can now be imported. Significant code parts were taken over from Libor's commits. Layout objects' symbols are hidden depending on the 'l' flag in si_ViewPar. The 'l' flag in si_DisplayPar is apparently not used for hiding layouts objects, but both flags are evaluated in parallel. Todo: for text objects the import of the format (font, size, alignment, bold, italic) needs to be added.

Refactor importDisplayPar() by using OcdParameterStreamReader.

There is no need to cache the dynamically created graphic and layout symbols. Instead create a temporary symbol and then scan the list of symbols whether an equal symbol is already present and thus can be used instead.

Text layout objects contain a limited set of formatting options, e.g., font type, font size, horizontal alignment, italic and bold type. These options are stored after the text string in the same format as for Parameter Strings.

In addition to 'addWarning()' 'addWarningOnce()' only adds a warning to the list of warnings if the warning is not yet in the list.

Image objects (as well as layout objects) define their color directly in the object definition. With this commit the import of layout, image and graphic objects is now done within a single function. A single warning is issued that these kind of objects are imported by means of auxiliary symbols and can't be exported in their original format. Closes OpenOrienteering#1231

Layout objects can be hidden individually. This property is set within a parameter string (type 27). If the parameter string defines an image layout object, a warning is issue that this object type cannot be imported.

Setting of cap and join styles was done in the importLineSymbolBase() function and was replicated by this PR for importing special objects. In addition setupLineSymbolFraming() was setting the cap and join styles for framing lines (although only checking for a subset of cap and join styles). This commit moves the setting to a separate function.

Image layout objects are stored in parameter strings very similar to background images (i.e., templates), whereas the image file itself is stored outside the .ocd file. This commit imports image layout objects as templates (and informs the user about it) after the original templates have been imported and thus adds them to the end of the list of templates.

Layout raster image objects can also be stored as embedded images directly in the .ocd file. This commit allows to save the embedded image locally in order to be added as a template to the map.

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Import of graphic, layout and image objects #2124

Import of graphic, layout and image objects #2124

Commits on Nov 19, 2024

Import of graphic, layout and image objects #2124

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Import of graphic, layout and image objects #2124

Commits on Nov 19, 2024