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from Xlib import X, XK
from clipboard import copy, paste
from constants import TARGET
from vim import open_vim
from inkscape import distribute, ids_from_xml
import text
import styles
# Set of pressed keys
pressed = set()
# This is a list of received events that haven't been handled yet.
# Only when the user releases a key, the script knows what it should do.
# Then it either discards the preceding events, or replays them
events = []
def event_to_string(self, event):
mods = []
if event.state & X.ShiftMask:
mods.append('Shift')
if event.state & X.ControlMask:
mods.append('Control')
keycode = event.detail
keysym = self.disp.keycode_to_keysym(keycode, 0)
char = XK.keysym_to_string(keysym)
return ''.join(mod + '+' for mod in mods) + (char if char else '?')
def replay(self):
for e in events:
self.inkscape.send_event(e, propagate=True)
self.disp.flush()
self.disp.sync()
def normal_mode(self, event, char):
events.append(event)
if event.type == X.KeyPress and char:
pressed.add(event_to_string(self, event))
return
if event.type != X.KeyRelease:
return
handled = False
if len(pressed) > 1:
paste_style(self, pressed)
handled = True
elif len(pressed) == 1:
# Get the only element in pressed
ev = next(iter(pressed))
handled = handle_single_key(self, ev)
# replay events to Inkscape if we couldn't handle them
if not handled:
replay(self)
events.clear()
pressed.clear()
# TODO: add key for distributing and grouping maybe
def handle_single_key(self, ev):
if ev == 't':
# Vim mode
open_vim(self, compile_latex=True)
elif ev == 'Shift+t':
# Vim mode prerendered
open_vim(self, compile_latex=False)
elif ev == 'a':
# Add objects mode
self.mode = styles.object_mode
elif ev == 'Shift+a':
# Save objects mode
styles.save_object_mode(self)
elif ev == 's':
# Apply style mode
self.mode = styles.style_mode
elif ev == 'Shift+s':
# Save style mode
styles.save_style_mode(self)
elif ev == 'w':
# Pencil
self.press('p')
elif ev == 'x':
# Snap
self.press('percent', X.ShiftMask)
elif ev == 'f':
# Bezier
self.press('b')
elif ev == 'b':
# Node
self.press('n')
elif ev == 'z':
# Undo
self.press('z', X.ControlMask)
elif ev == 'Shift+z':
# Delete
self.press('Delete')
elif ev == 'd':
# distribute horizontally
self.press('s', X.ControlMask)
self.press('c', X.ControlMask)
clipboard = paste()
distribute(ids_from_xml(clipboard), "hgap")
self.press('r', X.ControlMask)
elif ev == 'Shift+d':
# distribute vertically
self.press('s', X.ControlMask)
self.press('c', X.ControlMask)
clipboard = paste()
distribute(ids_from_xml(clipboard), "vgap")
self.press('r', X.ControlMask)
elif ev == 'v':
self.press('t', X.ControlMask | X.Mod1Mask)
elif ev == 'Shift+v':
self.press('h', X.ControlMask | X.Mod1Mask)
elif ev == 'g':
self.press('g', X.ControlMask)
elif ev == 'Shift+g':
self.press('g', X.ControlMask | X.ShiftMask)
elif ev == '`':
# Disabled mode
self.press('t')
self.mode = text.text_mode
else:
# Not handled
return False
return True
def paste_style(self, combination):
"""
This creates the style depending on the combination of keys.
"""
# Stolen from TikZ
pt = 1.327 # pixels
w = 0.4 * pt
thick_width = 0.8 * pt
very_thick_width = 1.2 * pt
style = {
'stroke-opacity': 1
}
if {'s', 'a', 'd', 'g', 'r', 'x', 'e'} & combination:
style['stroke'] = 'black'
style['stroke-width'] = w
style['marker-end'] = 'none'
style['marker-start'] = 'none'
style['stroke-dasharray'] = 'none'
else:
style['stroke'] = 'none'
if 'g' in combination:
w = thick_width
style['stroke-width'] = w
if 'r' in combination:
w = very_thick_width
style['stroke-width'] = w
if 'a' in combination:
style['marker-end'] = f'url(#marker-arrow-{w})'
if 'x' in combination:
style['marker-start'] = f'url(#marker-arrow-{w})'
style['marker-end'] = f'url(#marker-arrow-{w})'
if 'd' in combination:
style['stroke-dasharray'] = f'{w},{2*pt}'
if 'e' in combination:
style['stroke-dasharray'] = f'{3*pt},{3*pt}'
if 'f' in combination:
style['fill'] = 'black'
style['fill-opacity'] = 0.12
if 'b' in combination:
style['fill'] = 'black'
style['fill-opacity'] = 1
if 'w' in combination:
style['fill'] = 'white'
style['fill-opacity'] = 1
if {'f', 'b', 'w'} & combination:
style['marker-end'] = 'none'
style['marker-start'] = 'none'
if not {'f', 'b', 'w'} & combination:
style['fill'] = 'none'
style['fill-opacity'] = 1
if style['fill'] == 'none' and style['stroke'] == 'none':
return
# Start creation of the svg.
# Later on, we'll write this svg to the clipboard, and send Ctrl+Shift+V to
# Inkscape, to paste this style.
svg = '''
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg>
'''
# If a marker is applied, add its definition to the clipboard
# Arrow styles stolen from tikz
if ('marker-end' in style and style['marker-end'] != 'none') or \
('marker-start' in style and style['marker-start'] != 'none'):
svg += f'''
<defs id="marker-defs">
<marker
id="marker-arrow-{w}"
viewBox="0 0 10 10"
refX="5" refY="5"
markerWidth="6" markerHeight="6"
orient="auto-start-reverse">
<path d="M 0 0 L 10 5 L 0 10 z" />
</marker>
</defs>
'''
# TODO test if the new arrow actually works
# <marker
# id="marker-arrow-{w}"
# orient="auto-start-reverse"
# refY="0" refX="0"
# markerHeight="1.690" markerWidth="0.911">
# <g transform="scale({(8.40 * w + 3.87)/(4.5*w)})">
# <path
# d="M -1.55415,2.0722 C -1.42464,1.29512 0,0.1295 0.38852,0 0,-0.1295 -1.42464,-1.29512 -1.55415,-2.0722"
# style="fill:none;stroke:#000000;stroke-width:{0.6};stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
# inkscape:connector-curvature="0" />
# </g>
# </marker>
style_string = ';'.join('{}: {}'.format(key, value)
for key, value in sorted(style.items(), key=lambda x: x[0])
)
svg += f'<inkscape:clipboard style="{style_string}" /></svg>'
copy(svg, target=TARGET)
self.press('v', X.ControlMask | X.ShiftMask)
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