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1
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- Bde Overview
- How to Build BDE
- How to Run BDE
- Bde File Processsing
- Bde File Menu - 1
New/Open/Print
- Bde File Menu - 2
Save/SaveAs/Exit
- Bde’s O-O Drawing Menu
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- Bde is a Block Diagram Editor written in C++ using X11/Motif as its GUI.
Bde is built using imake, make and the gnu g++ compiler. Bde’s CVS
repository: CVSROOT = $CASE/95s523/95sbde/base/Master.
- The purpose of bde is to capture the semantics of software design
diagrams that support various CASE tools and track design changes.
- The latest text version of a User Guide for bde is in
$CVSROOT/bde/doc/bdeUserGuide.tex,v (which does not contain these
diagrams.)
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3
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- This procedure will check out and build the current version of bde (CVS
tag bde2alpha_rv, for alpha platforms):
- Type (or add to your .login):
- “setenv CVSROOT /usr/proj3/case/95s523/95sbde/base/Master”
- “setenv CXX g++ <RET>‘‘
- To check out the bde tree (src, doc, etc.) from its CVS repository into
your $CWD, type “cvs co -r bde2alpha_rv bde”.
- To build Makefiles, type “cd bde; xmkmf -a”.
- To compile and link bde, type “make -e”.
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4
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- This shell script executes the current most stable version of
bde:
- /usr/proj3/case/95s523/95sbde/bde/executables/bde
- Type (or add to your .login)
- “alias runbde ‘<above path>‘
<RET>‘‘
- then type “runbde” each time you run bde.
- Bde currently (Jan 2000) compiles on alpha workstations but not on
DecStations or vax platforms.
- Bde has been ported to DEC/alpha machines (jupiter or cs) and partially
re-implemented in Java.
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- To see bde’s pop-up FILE menu, click the leftmost button in the top-row
menu of bde’s main window.
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- New opens a new unnamed file and its first graph or diagram. A text
widget prompts for a graph title. (TBD: Better initial defaults.)
- Open displays a File Selection table and prompts for a .dat file to
open.* If successful, it displays
the Graph Table and prompts for a diagram to edit. (TBD: Change default .dat file type to
.bde.)
- Print opens a menu with options to Print-Current- or Print-All-
diagrams, or to save a PostScript or a gif version of the current diagram
to a file named <filename>_<HGid>.{ps
or gif}.*
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- Save saves a named file, overwriting a previous file by that name. It
will not save a new file without a name - use SaveAs for this.
- SaveAs prompts for a name by which to save a file being edited. All
diagrams in the file will be saved, whether changed or not.
- Exit terminates the editor. (The user is prompted to Save the current
file first.)
- If bde crashes, the database is usually saved to a file called bdeabort.dat.
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8
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- Node
- Link
- Bendpoint
- Text
- Graph
- Create
- Move
- Delete
- Resize
- Restyle
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9
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- To Create a node click at its desired center position. (Clicking
means pressing mouse button 1 down then up without
moving it.)
- To Move a node, click to select and highlight it, then drag to new
location. (Dragging means moving the mouse with mouse button 1 held
down.)
- Delete a node by double-clicking within its border. (Node Delete is
not permitted until all attached links are deleted.)
- Resize a node by clicking to highlight it then dragging to a new size.
(After node resize, attached links retain their bendpoints and shape, and internal text remains
left-justified.)
- Restyle to select a non-default node shape from the Restyle submenu.
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10
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11
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- Bendpoints are points where links start or end, change direction or
drawing style. For bendpoint operation, first select a link; this will
highlight the link and its bendpoints, to avoid selecting the wrong type
of object. Then:
- Create a new successor bendpoint
by clicking on an existing one.
- Move a bendpoint by dragging it. (Endpoints are not movable.)
- Delete a bendpoint by clicking on it. (Endpoints are not deletable.)
- (The first and last bendpoints (link ‘endpoints’) are treated specially.)
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- To enter/append text, select a node, link, or graph caption box. This
highlights the 'parent' object with which the text is associated and its
class whose actions are specialized.
(To edit X11/Motif text, use arrow keys to position the cursor to
the left and delete text to its right.)
- All text is located relative to, and moves with, its associated object.
If a line of text is dragged, its successors (in creation order)
belonging to the same parent are dragged along.
- Initial whitespace (indents) are not preserved.
- Line edits after initial entry are not yet supported. (One work-around is to
Text-edit the saved *.dat file)
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13
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14
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- FI Holds file path and date information (TBD)
- FO Holds font table info (X11,
menu, PostScript)
- HG Identifies one diagram or Graph
- CG One Caption (block) of its parent HG
- GX One text line of its parent CG
- HN One Node (block) of its parent HG
- HA One text line of its parent HN
- HL One directed Link between two HN’s
- HI One link label of its parent HL
- HP One ‘bend’Point of its parent HL
- GD Graph Defaults - diagram drawing styles
- XB Text Block: SuperClass of GX and HA. (New schema) [New bde schema
format in 96f523/bdecode/cparisi]. TBD: made HI a third subclass of
XB [Ref: 96f523/bdecode/jsingh]
- SY, TK: Symbol and ToKen tables (decomposition of XB text) [97f522/bde2java/hhuang/bde
maintains XB-text = SY and ToKen
xRefs.]
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15
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16
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Notes
