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in_lines (start, end, colour) tuple list to draw inward lines,
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out_lines (start, end, colour) tuple list to draw outward lines.
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__gproperties__ = {
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"node": ( gobject.TYPE_PYOBJECT, "node",
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"revision node instruction",
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gobject.PARAM_WRITABLE
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"tags": ( gobject.TYPE_PYOBJECT, "tags",
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"list of tags associated with the node",
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gobject.PARAM_WRITABLE
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"in-lines": ( gobject.TYPE_PYOBJECT, "in-lines",
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"instructions to draw lines into the cell",
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gobject.PARAM_WRITABLE
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box_size = self.box_size(widget)
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ctx.set_line_width(box_size / 8)
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ctx.set_line_cap(cairo.LINE_CAP_SQUARE)
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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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ctx.move_to(cell_area.x + box_size * start + box_size / 2,
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bg_area.y - bg_area.height / 2)
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ctx.line_to(cell_area.x + box_size * start, bg_area.y)
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ctx.line_to(cell_area.x + box_size * end + box_size, bg_area.y)
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elif start - end < -1:
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ctx.line_to(cell_area.x + box_size * start + box_size,
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ctx.line_to(cell_area.x + box_size * end, bg_area.y)
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ctx.line_to(cell_area.x + box_size * end + box_size / 2,
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bg_area.y + bg_area.height / 2)
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self.set_colour(ctx, colour, 0.0, 0.65)
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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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# Draw lines out of the cell
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for start, end, colour in self.out_lines:
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ctx.move_to(cell_area.x + box_size * start + box_size / 2,
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bg_area.y + bg_area.height / 2)
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ctx.line_to(cell_area.x + box_size * start,
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bg_area.y + bg_area.height)
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ctx.line_to(cell_area.x + box_size * end + box_size,
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bg_area.y + bg_area.height)
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elif start - end < -1:
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ctx.line_to(cell_area.x + box_size * start + box_size,
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bg_area.y + bg_area.height)
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ctx.line_to(cell_area.x + box_size * end,
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bg_area.y + bg_area.height)
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ctx.line_to(cell_area.x + box_size * end + box_size / 2,
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bg_area.y + bg_area.height / 2 + bg_area.height)
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self.set_colour(ctx, colour, 0.0, 0.65)
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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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# Draw the revision node in the right column
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(column, colour) = self.node
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self.set_colour(ctx, colour, 0.5, 1.0)
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self.render_tags(ctx, widget.create_pango_context(), cell_area, box_size)
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def render_line(self, ctx, cell_area, box_size, mid, height, start, end, colour):
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x = cell_area.x + box_size * end + box_size / 2
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ctx.move_to(x, mid + height / 3)
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ctx.line_to(x, mid + height / 3)
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ctx.move_to(x, mid + height / 6)
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ctx.line_to(x, mid + height / 6)
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x = cell_area.x + box_size * start + box_size / 2
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ctx.move_to(x, mid - height / 3)
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ctx.line_to(x, mid - height / 3)
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ctx.move_to(x, mid - height / 6)
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ctx.line_to(x, mid - height / 6)
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startx = cell_area.x + box_size * start + box_size / 2
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endx = cell_area.x + box_size * end + box_size / 2
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ctx.move_to(startx, mid - height / 2)
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if start - end == 0 :
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ctx.line_to(endx, mid + height / 2)
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ctx.curve_to(startx, mid - height / 5,
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startx, mid - height / 5,
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startx + (endx - startx) / 2, mid)
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ctx.curve_to(endx, mid + height / 5,
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endx, mid + height / 5 ,
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endx, mid + height / 2)
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self.set_colour(ctx, colour, 0.0, 0.65)
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def render_tags(self, ctx, pango_ctx, cell_area, box_size):
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# colour ID used in self.set_colour on the tags
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(column, colour) = self.node
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font_desc = pango.FontDescription()
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font_desc.set_size(pango.SCALE * 7)
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tag_layout = pango.Layout(pango_ctx)
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tag_layout.set_font_description(font_desc)
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# The width of the tag label stack
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for tag_idx, tag in enumerate(self.tags):
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tag_layout.set_text(" " + tag + " ")
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text_width, text_height = tag_layout.get_pixel_size()
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box_size * (column + 1.3) + width
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cell_area.height / 2 - \
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width += text_width + 5
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# Draw the tag border
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ctx.move_to(x0 - box_size / 3, y0 + text_height / 2)
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ctx.line_to(x0 + text_width, y0)
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ctx.line_to(x0 + text_width, y0 + text_height)
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ctx.line_to(x0, y0 + text_height)
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ctx.line_to(x0 - box_size / 3, y0 + text_height / 2)
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ctx.arc(x0 - box_size / 12,
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y0 + text_height / 2,
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self.set_colour(ctx, TAG_COLOUR_ID, 0.0, 0.5)
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ctx.stroke_preserve()
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ctx.set_fill_rule (cairo.FILL_RULE_EVEN_ODD)
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self.set_colour(ctx, TAG_COLOUR_ID, 0.5, 1.0)
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self.set_colour(ctx, 0, 0.0, 0.0)
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ctx.show_layout(tag_layout)