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45
in_lines (start, end, colour) tuple list to draw inward lines,
31
46
out_lines (start, end, colour) tuple list to draw outward lines.
36
51
__gproperties__ = {
37
"node": ( gobject.TYPE_PYOBJECT, "node",
52
"node": ( GObject.TYPE_PYOBJECT, "node",
38
53
"revision node instruction",
39
gobject.PARAM_WRITABLE
41
"in-lines": ( gobject.TYPE_PYOBJECT, "in-lines",
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GObject.PARAM_WRITABLE
56
"tags": ( GObject.TYPE_PYOBJECT, "tags",
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"list of tags associated with the node",
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GObject.PARAM_WRITABLE
60
"in-lines": ( GObject.TYPE_PYOBJECT, "in-lines",
42
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"instructions to draw lines into the cell",
43
gobject.PARAM_WRITABLE
62
GObject.PARAM_WRITABLE
45
"out-lines": ( gobject.TYPE_PYOBJECT, "out-lines",
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"out-lines": ( GObject.TYPE_PYOBJECT, "out-lines",
46
65
"instructions to draw lines out of the cell",
47
gobject.PARAM_WRITABLE
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GObject.PARAM_WRITABLE
51
70
def do_set_property(self, property, value):
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"""Set properties from GObject properties."""
53
72
if property.name == "node":
74
elif property.name == "tags":
55
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elif property.name == "in-lines":
56
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self.in_lines = value
57
78
elif property.name == "out-lines":
108
127
ctx.set_source_rgb(red, green, blue)
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def on_get_size(self, widget, cell_area):
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def do_activate(event, widget, path, bg_area, cell_area, flags):
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"""Renderers cannot be activated; always return True."""
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def do_editing_started(event, widget, path, fb_area, cell_area, flags):
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"""Renderers cannot be edited; always return None."""
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def do_get_size(self, widget, cell_area):
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"""Return the size we need for this cell.
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Each cell is drawn individually and is only as wide as it needs
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163
instead of a pure diagonal ... this reduces confusion by an
137
164
incredible amount.
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ctx = window.cairo_create()
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ctx.rectangle(bg_area.x, bg_area.y, bg_area.width, bg_area.height)
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box_size = self.box_size(widget)
145
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ctx.set_line_width(box_size / 8)
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ctx.set_line_cap(cairo.LINE_CAP_ROUND)
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# Draw lines into the cell
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for start, end, colour in self.in_lines:
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self.render_line (ctx, cell_area, box_size,
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bg_area.y, bg_area.height,
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start, end, colour, flags)
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# Draw lines out of the cell
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for start, end, colour in self.out_lines:
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self.render_line (ctx, cell_area, box_size,
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bg_area.y + bg_area.height, bg_area.height,
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start, end, colour, flags)
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# Draw the revision node in the right column
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(column, colour) = self.node
163
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cell_area.y + cell_area.height / 2,
164
189
box_size / 4, 0, 2 * math.pi)
191
if flags & Gtk.CellRendererState.SELECTED:
192
ctx.set_source_rgb(1.0, 1.0, 1.0)
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ctx.set_line_width(box_size / 4)
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ctx.stroke_preserve()
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ctx.set_line_width(box_size / 8)
166
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self.set_colour(ctx, colour, 0.0, 0.5)
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ctx.stroke_preserve()
169
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self.set_colour(ctx, colour, 0.5, 1.0)
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def render_line (self, ctx, cell_area, box_size, mid, height, start, end, colour):
203
self.render_tags(ctx, widget.create_pango_context(), cell_area, box_size)
205
def render_line(self, ctx, cell_area, box_size,
206
mid, height, start, end, colour, flags):
173
207
if start is None:
208
ctx.set_line_cap(CAIRO_LINE_CAP_ROUND)
174
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x = cell_area.x + box_size * end + box_size / 2
175
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ctx.move_to(x, mid + height / 3)
176
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ctx.line_to(x, mid + height / 3)
177
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ctx.move_to(x, mid + height / 6)
178
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ctx.line_to(x, mid + height / 6)
180
215
elif end is None:
216
ctx.set_line_cap(CAIRO_LINE_CAP_ROUND)
181
217
x = cell_area.x + box_size * start + box_size / 2
182
218
ctx.move_to(x, mid - height / 3)
183
219
ctx.line_to(x, mid - height / 3)
184
220
ctx.move_to(x, mid - height / 6)
185
221
ctx.line_to(x, mid - height / 6)
224
ctx.set_line_cap(CAIRO_LINE_CAP_BUTT)
187
225
startx = cell_area.x + box_size * start + box_size / 2
188
226
endx = cell_area.x + box_size * end + box_size / 2
190
228
ctx.move_to(startx, mid - height / 2)
192
230
if start - end == 0 :
193
ctx.line_to(endx, mid + height / 2)
231
ctx.line_to(endx, mid + height / 2 + 1)
195
233
ctx.curve_to(startx, mid - height / 5,
196
234
startx, mid - height / 5,
197
235
startx + (endx - startx) / 2, mid)
199
237
ctx.curve_to(endx, mid + height / 5,
200
238
endx, mid + height / 5 ,
201
endx, mid + height / 2)
239
endx, mid + height / 2 + 1)
241
if flags & Gtk.CellRendererState.SELECTED:
242
ctx.set_source_rgb(1.0, 1.0, 1.0)
243
ctx.set_line_width(box_size / 5)
244
ctx.stroke_preserve()
245
ctx.set_line_width(box_size / 8)
203
247
self.set_colour(ctx, colour, 0.0, 0.65)
b'\\ No newline at end of file'
251
def render_tags(self, ctx, pango_ctx, cell_area, box_size):
252
# colour ID used in self.set_colour on the tags
255
(column, colour) = self.node
257
font_desc = Pango.FontDescription()
258
font_desc.set_size(Pango.SCALE * 7)
260
tag_layout = Pango.Layout(pango_ctx)
261
tag_layout.set_font_description(font_desc)
263
# The width of the tag label stack
266
for tag_idx, tag in enumerate(self.tags):
267
tag_layout.set_text(" " + tag + " ", -1)
268
text_width, text_height = tag_layout.get_pixel_size()
271
box_size * (column + 1.3) + width
274
cell_area.height / 2 - \
277
width += text_width + 5
279
# Draw the tag border
280
ctx.move_to(x0 - box_size / 3, y0 + text_height / 2)
282
ctx.line_to(x0 + text_width, y0)
283
ctx.line_to(x0 + text_width, y0 + text_height)
284
ctx.line_to(x0, y0 + text_height)
285
ctx.line_to(x0 - box_size / 3, y0 + text_height / 2)
288
ctx.arc(x0 - box_size / 12,
289
y0 + text_height / 2,
293
self.set_colour(ctx, TAG_COLOUR_ID, 0.0, 0.5)
294
ctx.stroke_preserve()
296
ctx.set_fill_rule (CAIRO_FILL_RULE_EVEN_ODD)
297
self.set_colour(ctx, TAG_COLOUR_ID, 0.5, 1.0)
301
self.set_colour(ctx, 0, 0.0, 0.0)
303
PangoCairo.show_layout(ctx, tag_layout)