/usr/lib/python2.7/dist-packages/meld/diffmap.py is in meld 3.12.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | # Copyright (C) 2002-2009 Stephen Kennedy <stevek@gnome.org>
# Copyright (C) 2009-2013 Kai Willadsen <kai.willadsen@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import collections
import cairo
from gi.repository import GObject
from gi.repository import Gdk
from gi.repository import Gtk
class DiffMap(Gtk.DrawingArea):
__gtype_name__ = "DiffMap"
def __init__(self):
GObject.GObject.__init__(self)
self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK)
self._scrolladj = None
self._difffunc = lambda: None
self._handlers = []
self._y_offset = 0
self._h_offset = 0
self._scroll_y = 0
self._scroll_height = 0
self._setup = False
self._width = 10
def setup(self, scrollbar, change_chunk_fn, color_map):
for (o, h) in self._handlers:
o.disconnect(h)
self._scrolladj = scrollbar.get_adjustment()
self.on_scrollbar_style_updated(scrollbar)
self.on_scrollbar_size_allocate(scrollbar, scrollbar.get_allocation())
scrollbar.ensure_style()
scroll_style_hid = scrollbar.connect("style-updated",
self.on_scrollbar_style_updated)
scroll_size_hid = scrollbar.connect("size-allocate",
self.on_scrollbar_size_allocate)
adj_change_hid = self._scrolladj.connect("changed",
lambda w: self.queue_draw())
adj_val_hid = self._scrolladj.connect("value-changed",
lambda w: self.queue_draw())
self._handlers = [(scrollbar, scroll_style_hid),
(scrollbar, scroll_size_hid),
(self._scrolladj, adj_change_hid),
(self._scrolladj, adj_val_hid)]
self._difffunc = change_chunk_fn
self.set_color_scheme(color_map)
self._setup = True
self._cached_map = None
self.queue_draw()
def on_diffs_changed(self, *args):
self._cached_map = None
def set_color_scheme(self, color_map):
self.fill_colors, self.line_colors = color_map
self.queue_draw()
def on_scrollbar_style_updated(self, scrollbar):
value = GObject.Value(int)
scrollbar.style_get_property("stepper-size", value)
stepper_size = value.get_int()
scrollbar.style_get_property("stepper-spacing", value)
stepper_spacing = value.get_int()
bool_value = GObject.Value(bool)
scrollbar.style_get_property("has-backward-stepper", bool_value)
has_backward = bool_value.get_boolean()
scrollbar.style_get_property("has-secondary-forward-stepper", bool_value)
has_secondary_forward = bool_value.get_boolean()
scrollbar.style_get_property("has-secondary-backward-stepper", bool_value)
has_secondary_backward = bool_value.get_boolean()
scrollbar.style_get_property("has-forward-stepper", bool_value)
has_foreward = bool_value.get_boolean()
steppers = [has_backward, has_secondary_forward, has_secondary_backward, has_foreward]
offset = stepper_size * steppers[0:2].count(True)
shorter = stepper_size * steppers.count(True)
if steppers[0] or steppers[1]:
offset += stepper_spacing
shorter += stepper_spacing
if steppers[2] or steppers[3]:
shorter += stepper_spacing
self._y_offset = offset
self._h_offset = shorter
self.queue_draw()
def on_scrollbar_size_allocate(self, scrollbar, allocation):
self._scroll_y = allocation.y
self._scroll_height = allocation.height
self._width = max(allocation.width, 10)
self._cached_map = None
self.queue_resize()
def do_draw(self, context):
if not self._setup:
return
height = self._scroll_height - self._h_offset - 1
y_start = self._scroll_y - self.get_allocation().y - self._y_offset + 1
width = self.get_allocated_width()
xpad = 2.5
x0 = xpad
x1 = width - 2 * xpad
context.translate(0, y_start)
context.set_line_width(1)
context.rectangle(x0 - 3, -1, x1 + 6, height + 1)
context.clip()
if self._cached_map is None:
surface = cairo.Surface.create_similar(
context.get_target(), cairo.CONTENT_COLOR_ALPHA,
width, height)
cache_ctx = cairo.Context(surface)
cache_ctx.set_line_width(1)
tagged_diffs = collections.defaultdict(list)
for c, y0, y1 in self._difffunc():
tagged_diffs[c].append((y0, y1))
for tag, diffs in tagged_diffs.items():
cache_ctx.set_source_rgba(*self.fill_colors[tag])
for y0, y1 in diffs:
y0, y1 = round(y0 * height) - 0.5, round(y1 * height) - 0.5
cache_ctx.rectangle(x0, y0, x1, y1 - y0)
cache_ctx.fill_preserve()
cache_ctx.set_source_rgba(*self.line_colors[tag])
cache_ctx.stroke()
self._cached_map = surface
context.set_source_surface(self._cached_map, 0., 0.)
context.paint()
page_color = (0., 0., 0., 0.1)
page_outline_color = (0.0, 0.0, 0.0, 0.3)
adj = self._scrolladj
s = round(height * (adj.get_value() / adj.get_upper())) - 0.5
e = round(height * (adj.get_page_size() / adj.get_upper()))
context.set_source_rgba(*page_color)
context.rectangle(x0 - 2, s, x1 + 4, e)
context.fill_preserve()
context.set_source_rgba(*page_outline_color)
context.stroke()
def do_button_press_event(self, event):
if event.button == 1:
y_start = self.get_allocation().y - self._scroll_y - self._y_offset
total_height = self._scroll_height - self._h_offset
fraction = (event.y + y_start) / total_height
adj = self._scrolladj
val = fraction * adj.get_upper() - adj.get_page_size() / 2
upper = adj.get_upper() - adj.get_page_size()
adj.set_value(max(min(upper, val), adj.get_lower()))
return True
return False
def do_get_preferred_width(self):
return self._width, self._width
|