Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

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+# Extensions for the Impress and Draw Applications
+
+`source/pdfimport/` - PDF import
+
+Uses an external poppler process to parse and handle PDF
+import as draw shapes.
+
+`source/minimizer/` - Presentation Minimizer
+
+Shrinks presentations by down-scaling images, and removing
+extraneous eg. embedded OLE content.
+
+`source/presenter/` - Impress / Presenter Console.
+
+This couples to `sd/` in rather strange ways. Its design is
+heavily mangled by an attempt to use only UNO interfaces
+which are highly inadequate. This leads to somewhat
+ridiculous situations. Activating in response to
+configuration keys (for example), and the `XPresenterHelper`
+interface inside `sd/` used to create and manage windows.
+
+The main screen uses a hardware-accelerated
+canvas (e.g. cairo canvas), while the entire secondary screen
+uses a VCL-canvas that is created in
+`sd::framework::FullScreenPane::CreateCanvas()`.
+
+The secondary screen contains 3 `Pane`s which each have
+2 `XWindows` for the border area & the actual content,
+and each content Pane is backed by a `sd::presenter::PresenterCanvas`
+that wraps the `FullScreenPane`'s canvas and does clipping.