42
43
    It's up to you how to actually draw the nodes and lines (straight,
 
43
44
    curved, kinked, etc.) and to pick the actual colours for each index.
 
46
 
    graph = repository.get_graph()
 
 
46
    assert isinstance(start_revs, list)
 
 
47
    def update_root_progress(step_number):
 
 
48
        """IFF our container received a root progress bar, then update it."""
 
 
49
        if root_progress is not None:
 
 
50
            root_progress.update(current=step_number)
 
49
54
    graph_children = {}
 
50
 
    for (revid, parent_revids) in graph.iter_ancestry(start_revs):
 
51
 
        if parent_revids is None:
 
54
 
        if parent_revids == (NULL_REVISION,):
 
55
 
            graph_parents[revid] = ()
 
57
 
            graph_parents[revid] = parent_revids
 
58
 
        for parent in parent_revids:
 
59
 
            graph_children.setdefault(parent, []).append(revid)
 
60
 
        graph_children.setdefault(revid, [])
 
62
 
        for ghost_child in graph_children[ghost]:
 
63
 
            graph_parents[ghost_child] = [p for p in graph_parents[ghost_child]
 
 
55
    update_root_progress(1)
 
 
56
    progress_bar = ui.ui_factory.nested_progress_bar()
 
 
58
        progress_bar.update(msg="Arranging tree fragments")
 
 
59
        for i, (revid, parent_revids) in enumerate(graph.iter_ancestry(start_revs)):
 
 
62
            if parent_revids is None:
 
 
65
            if parent_revids == (NULL_REVISION,):
 
 
66
                graph_parents[revid] = ()
 
 
68
                graph_parents[revid] = parent_revids
 
 
69
            for parent in parent_revids:
 
 
70
                graph_children.setdefault(parent, []).append(revid)
 
 
71
            graph_children.setdefault(revid, [])
 
 
73
        progress_bar.finished()
 
 
75
    update_root_progress(2)
 
 
76
    progress_bar = ui.ui_factory.nested_progress_bar()
 
 
78
        progress_bar.update(msg="Removing ghosts", total=len(ghosts))
 
 
79
        for i, ghost in enumerate(ghosts):
 
 
81
                progress_bar.update(current=i)
 
 
82
            for ghost_child in graph_children[ghost]:
 
 
83
                graph_parents[ghost_child] = [p for p in graph_parents[ghost_child]
 
 
86
        progress_bar.finished()
 
65
87
    graph_parents["top:"] = start_revs
 
67
89
    if len(graph_parents)>0:
 
 
150
181
        columns = [list(empty_column)]
 
153
 
        for branch_id in branch_ids:
 
154
 
            branch_line = branch_lines[branch_id]
 
156
 
            # Find the col_index for the direct parent branch. This will be the
 
157
 
            # starting point when looking for a free column.
 
160
 
            if len(branch_id) > 1:
 
161
 
                parent_revno = branch_id[0:-1]
 
162
 
                if parent_revno in revno_index:
 
163
 
                    parent_index = revno_index[parent_revno]
 
164
 
                    parent_node = linegraph[parent_index][1]
 
166
 
                        parent_col_index = parent_node[0]
 
169
 
            col_search_order = _branch_line_col_search_order(columns,
 
171
 
            color = reduce(lambda x, y: x+y, branch_id, 0)
 
175
 
            last_rev_index = None
 
176
 
            for rev_index in branch_line:
 
178
 
                    if broken_line_length and \
 
179
 
                       rev_index - last_rev_index > broken_line_length:
 
180
 
                        line_range.append(last_rev_index+1)
 
181
 
                        line_range.append(rev_index-1)
 
183
 
                        line_range.extend(range(last_rev_index+1, rev_index))
 
185
 
                line_range.append(rev_index)
 
186
 
                last_rev_index = rev_index
 
189
 
                if broken_line_length and \
 
190
 
                   parent_index - last_rev_index > broken_line_length:
 
191
 
                    line_range.append(last_rev_index+1)
 
193
 
                    line_range.extend(range(last_rev_index+1, parent_index))
 
195
 
            col_index = _find_free_column(columns,
 
199
 
            node = (col_index, color)
 
200
 
            for rev_index in branch_line:
 
201
 
                linegraph[rev_index][1] = node
 
202
 
                columns[col_index][rev_index] = True
 
204
 
            for rev_index in branch_line:
 
209
 
                     end_of_merge) = merge_sorted_revisions[rev_index]
 
211
 
                linegraph[rev_index][4] = graph_children[revid]
 
212
 
                col_index = linegraph[rev_index][1][0]
 
214
 
                for parent_revid in graph_parents[revid]:
 
215
 
                    if parent_revid in revid_index:
 
217
 
                        parent_index = revid_index[parent_revid]                            
 
 
184
        update_root_progress(4)
 
 
185
        progress_bar = ui.ui_factory.nested_progress_bar()
 
 
187
            progress_bar.update(msg="Organizing edges", total=len(branch_ids))
 
 
188
            for i, branch_id in enumerate(branch_ids):
 
 
190
                    progress_bar.update(current=i)
 
 
191
                branch_line = branch_lines[branch_id]
 
 
193
                # Find the col_index for the direct parent branch. This will be the
 
 
194
                # starting point when looking for a free column.
 
 
197
                if len(branch_id) > 1:
 
 
198
                    parent_revno = branch_id[0:-1]
 
 
199
                    if parent_revno in revno_index:
 
 
200
                        parent_index = revno_index[parent_revno]
 
218
201
                        parent_node = linegraph[parent_index][1]
 
220
203
                            parent_col_index = parent_node[0]
 
 
206
                col_search_order = _branch_line_col_search_order(columns,
 
 
208
                color = reduce(lambda x, y: x+y, branch_id, 0)
 
 
212
                last_rev_index = None
 
 
213
                for rev_index in branch_line:
 
 
215
                        if broken_line_length and \
 
 
216
                           rev_index - last_rev_index > broken_line_length:
 
 
217
                            line_range.append(last_rev_index+1)
 
 
218
                            line_range.append(rev_index-1)
 
222
 
                            parent_col_index = None
 
224
 
                                _line_col_search_order(columns,
 
228
 
                        # If this line is really long, break it.
 
229
 
                        if len(branch_id) > 0 and \
 
230
 
                           broken_line_length and \
 
231
 
                           parent_index - rev_index > broken_line_length:
 
232
 
                            child_line_col_index = \
 
233
 
                                _find_free_column(columns,
 
237
 
                            _mark_column_as_used(columns,
 
238
 
                                                 child_line_col_index,
 
241
 
                            # Recall _line_col_search_order to reset it back to
 
 
220
                            line_range.extend(range(last_rev_index+1, rev_index))
 
 
222
                    line_range.append(rev_index)
 
 
223
                    last_rev_index = rev_index
 
 
226
                    if broken_line_length and \
 
 
227
                       parent_index - last_rev_index > broken_line_length:
 
 
228
                        line_range.append(last_rev_index+1)
 
 
230
                        line_range.extend(range(last_rev_index+1, parent_index))
 
 
232
                col_index = _find_free_column(columns,
 
 
236
                node = (col_index, color)
 
 
237
                for rev_index in branch_line:
 
 
238
                    linegraph[rev_index][1] = node
 
 
239
                    columns[col_index][rev_index] = True
 
 
241
                for rev_index in branch_line:
 
 
246
                         end_of_merge) = merge_sorted_revisions[rev_index]
 
 
248
                    linegraph[rev_index][4] = graph_children[revid]
 
 
249
                    col_index = linegraph[rev_index][1][0]
 
 
251
                    for parent_revid in graph_parents[revid]:
 
 
252
                        if parent_revid in revid_index:
 
 
254
                            parent_index = revid_index[parent_revid]                            
 
 
255
                            parent_node = linegraph[parent_index][1]
 
 
257
                                parent_col_index = parent_node[0]
 
 
259
                                parent_col_index = None
 
243
260
                            col_search_order = \
 
244
261
                                    _line_col_search_order(columns,
 
245
262
                                                           parent_col_index,
 
247
 
                            parent_col_line_index = \
 
248
 
                                _find_free_column(columns,
 
252
 
                            _mark_column_as_used(columns,
 
253
 
                                                 parent_col_line_index,
 
255
 
                            lines.append((rev_index,
 
257
 
                                          (child_line_col_index,
 
258
 
                                           parent_col_line_index)))
 
260
 
                            line_col_index = col_index
 
261
 
                            if parent_index - rev_index >1:
 
262
 
                                line_range = range(rev_index + 1, parent_index)
 
264
 
                                    _find_free_column(columns,
 
268
 
                                _mark_column_as_used(columns,
 
271
 
                            lines.append((rev_index,
 
 
265
                            # If this line is really long, break it.
 
 
266
                            if len(branch_id) > 0 and \
 
 
267
                               broken_line_length and \
 
 
268
                               parent_index - rev_index > broken_line_length:
 
 
269
                                child_line_col_index = \
 
 
270
                                    _find_free_column(columns,
 
 
274
                                _mark_column_as_used(columns,
 
 
275
                                                     child_line_col_index,
 
 
278
                                # Recall _line_col_search_order to reset it back to
 
 
281
                                        _line_col_search_order(columns,
 
 
284
                                parent_col_line_index = \
 
 
285
                                    _find_free_column(columns,
 
 
289
                                _mark_column_as_used(columns,
 
 
290
                                                     parent_col_line_index,
 
 
292
                                lines.append((rev_index,
 
 
294
                                              (child_line_col_index,
 
 
295
                                               parent_col_line_index)))
 
 
297
                                line_col_index = col_index
 
 
298
                                if parent_index - rev_index >1:
 
 
299
                                    line_range = range(rev_index + 1, parent_index)
 
 
301
                                        _find_free_column(columns,
 
 
305
                                    _mark_column_as_used(columns,
 
 
308
                                lines.append((rev_index,
 
 
312
            progress_bar.finished()
 
275
 
        for (child_index, parent_index, line_col_indexes) in lines:
 
276
 
            (child_col_index, child_color) = linegraph[child_index][1]
 
277
 
            (parent_col_index, parent_color) = linegraph[parent_index][1]
 
279
 
            if len(line_col_indexes) == 1:
 
280
 
                if parent_index - child_index == 1:
 
281
 
                    linegraph[child_index][2].append(
 
 
314
        update_root_progress(5)
 
 
315
        progress_bar = ui.ui_factory.nested_progress_bar()
 
 
317
            progress_bar.update(msg="Pretifying graph", total=len(lines))
 
 
318
            for i, (child_index, parent_index, line_col_indexes) in enumerate(lines):
 
 
320
                    progress_bar.update(current=i)
 
 
321
                (child_col_index, child_color) = linegraph[child_index][1]
 
 
322
                (parent_col_index, parent_color) = linegraph[parent_index][1]
 
 
324
                if len(line_col_indexes) == 1:
 
 
325
                    if parent_index - child_index == 1:
 
 
326
                        linegraph[child_index][2].append(
 
 
331
                        # line from the child's column to the lines column
 
 
332
                        linegraph[child_index][2].append(
 
 
336
                        # lines down the line's column
 
 
337
                        for line_part_index in range(child_index+1, parent_index-1):
 
 
338
                            linegraph[line_part_index][2].append(
 
 
339
                                (line_col_indexes[0],   
 
 
342
                        # line from the line's column to the parent's column
 
 
343
                        linegraph[parent_index-1][2].append(
 
 
344
                            (line_col_indexes[0],
 
286
349
                    # line from the child's column to the lines column
 
287
350
                    linegraph[child_index][2].append(
 
288
351
                        (child_col_index,
 
289
352
                         line_col_indexes[0],
 
291
 
                    # lines down the line's column
 
292
 
                    for line_part_index in range(child_index+1, parent_index-1):
 
293
 
                        linegraph[line_part_index][2].append(
 
294
 
                            (line_col_indexes[0],   
 
 
355
                    linegraph[child_index+1][2].append(
 
 
356
                        (line_col_indexes[0],
 
 
361
                    linegraph[parent_index-2][2].append(
 
297
365
                    # line from the line's column to the parent's column
 
298
366
                    linegraph[parent_index-1][2].append(
 
299
 
                        (line_col_indexes[0],
 
 
367
                        (line_col_indexes[1],
 
300
368
                         parent_col_index,
 
304
 
                # line from the child's column to the lines column
 
305
 
                linegraph[child_index][2].append(
 
310
 
                linegraph[child_index+1][2].append(
 
311
 
                    (line_col_indexes[0],
 
316
 
                linegraph[parent_index-2][2].append(
 
320
 
                # line from the line's column to the parent's column
 
321
 
                linegraph[parent_index-1][2].append(
 
322
 
                    (line_col_indexes[1],
 
 
371
            progress_bar.finished()
 
325
372
        return (linegraph, revid_index, len(columns))
 
327
374
        return (linegraph, revid_index, 0)