# -*- coding: utf-8 -*-
#
# Copyright (C) 2016 by Ihor E. Novikov
#
# 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 3 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 <https://www.gnu.org/licenses/>.
import cairo
import math
import wal
from sk1 import config
from sk1.document.ruler import VFONT, HFONT
from uc2 import cms, uc2const
CORNER = ((3, 1, 3, 16), (2, 2, 5, 2), (1, 13, 16, 13),
(14, 12, 14, 15), (5, 11, 6, 10), (7, 9, 8, 8),
(9, 7, 10, 6), (11, 5, 12, 4), (13, 3, 14, 2))
class PreviewCorner(wal.HPanel, wal.DrawableWidget):
icon = None
def __init__(self, parent):
size = config.ruler_size
wal.HPanel.__init__(self, parent)
wal.DrawableWidget.__init__(self)
self.pack((size, size))
self.set_bg(wal.WHITE)
self.set_double_buffered()
def paint(self):
w, h = self.get_size()
self.set_stroke()
self.set_fill(cms.val_255(config.ruler_bg))
self.draw_rect(0, 0, w, h)
stop_clr = cms.val_255(config.ruler_fg) + [255]
start_clr = cms.val_255(config.ruler_fg) + [0]
rect = (0, h - 1, w * 2, 1)
self.gc_draw_linear_gradient(rect, start_clr, stop_clr)
rect = (w - 1, 0, 1, h * 2)
self.gc_draw_linear_gradient(rect, start_clr, stop_clr, True)
shift = (w - 19) / 2 + 1
self.set_stroke(cms.val_255(config.ruler_fg))
for x0, y0, x1, y1 in CORNER:
self.draw_line(x0 + shift, y0 + shift, x1 + shift, y1 + shift)
class PreviewRuler(wal.HPanel, wal.DrawableWidget):
horizontal = True
units = uc2const.UNIT_MM
canvas = None
surface = None
ctx = None
width = 0
height = 0
def __init__(self, parent, canvas, units=uc2const.UNIT_MM, horizontal=True):
self.canvas = canvas
self.units = units
self.horizontal = horizontal
size = config.ruler_size
wal.HPanel.__init__(self, parent)
wal.DrawableWidget.__init__(self)
self.pack((size, size))
self.set_bg(wal.WHITE)
self.set_double_buffered()
def calc_ruler(self):
canvas = self.canvas
w, h = self.canvas.get_page_size()
x = y = 0
udx = udy = uc2const.unit_dict[self.units]
x0, y0 = canvas.point_doc_to_win([-w / 2.0 + x, -h / 2.0 + y])
dx = udx * canvas.zoom
dy = udy * canvas.zoom
sdist = config.snap_distance
i = 0.0
while dx < sdist + 3:
i = i + 0.5
dx = dx * 10.0 * i
if dx / 2.0 > sdist + 3 and dx / 2.0 > udx * canvas.zoom:
dx = dx / 2.0
i = 0.0
while dy < sdist + 3:
i = i + 0.5
dy = dy * 10.0 * i
if dy / 2.0 > sdist + 3 and dy / 2.0 > udy * canvas.zoom:
dy = dy / 2.0
sx = (x0 / dx - math.floor(x0 / dx)) * dx
sy = (y0 / dy - math.floor(y0 / dy)) * dy
return x0, y0, dx, dy, sx, sy
def get_ticks(self):
canvas = self.canvas
pw, ph = self.canvas.get_page_size()
unit = uc2const.unit_dict[self.units]
w, h = self.get_size()
x0, y0, dx, dy, sx, sy = self.calc_ruler()
small_ticks = []
text_ticks = []
if self.horizontal:
i = -1
pos = 0
while pos < w:
pos = sx + i * dx
small_ticks.append(sx + i * dx)
if dx > 10:
small_ticks.append(pos + dx * .5)
i += 1
coef = round(50.0 / dx)
if not coef:
coef = 1.0
dxt = dx * coef
sxt = (x0 / dxt - math.floor(x0 / dxt)) * dxt
float_flag = False
unit_dx = dxt / (unit * canvas.zoom)
if unit_dx < 1.0:
float_flag = True
i = -1
pos = 0
shift = pw / 2.0
while pos < w:
pos = sxt + i * dxt
doc_pos = canvas.point_win_to_doc((pos, 0))[0] + shift
doc_pos *= uc2const.point_dict[self.units]
if float_flag:
txt = str(round(doc_pos, 4))
if not doc_pos:
txt = '0'
else:
txt = str(int(round(doc_pos)))
text_ticks.append((sxt + i * dxt, txt))
i += 1
else:
i = -1
pos = 0
while pos < h:
pos = sy + i * dy
small_ticks.append(sy + i * dy)
if dy > 10:
small_ticks.append(pos + dy * .5)
i += 1
coef = round(50.0 / dy)
if not coef:
coef = 1.0
dyt = dy * coef
syt = (y0 / dyt - math.floor(y0 / dyt)) * dyt
float_flag = False
unit_dy = dyt / (unit * canvas.zoom)
if unit_dy < 1.0:
float_flag = True
i = -1
pos = 0
shift = ph / 2.0
while pos < h:
pos = syt + i * dyt
doc_pos = canvas.point_win_to_doc((0, pos))[1] + shift
doc_pos *= uc2const.point_dict[self.units]
if float_flag:
txt = str(round(doc_pos, 4))
if not doc_pos:
txt = '0'
else:
txt = str(int(round(doc_pos)))
text_ticks.append((syt + i * dyt, txt))
i += 1
return small_ticks, text_ticks
def paint(self):
w, h = self.get_size()
if self.surface is None or self.width != w or self.height != h:
self.surface = cairo.ImageSurface(cairo.FORMAT_RGB24, w, h)
self.width, self.height = w, h
self.ctx = cairo.Context(self.surface)
self.ctx.set_matrix(cairo.Matrix(1.0, 0.0, 0.0, 1.0, 0.0, 0.0))
self.ctx.set_source_rgb(*config.ruler_bg)
self.ctx.paint()
self.ctx.set_antialias(cairo.ANTIALIAS_NONE)
self.ctx.set_line_width(1.0)
self.ctx.set_dash([])
self.ctx.set_source_rgb(*config.ruler_fg)
if self.horizontal:
self.hrender(w, h)
else:
self.vrender(w, h)
self.draw_bitmap(wal.copy_surface_to_bitmap(self.surface))
def hrender(self, w, h):
self.ctx.move_to(0, h)
self.ctx.line_to(w, h)
small_ticks, text_ticks = self.get_ticks()
for item in small_ticks:
self.ctx.move_to(item, h - config.ruler_small_tick)
self.ctx.line_to(item, h - 1)
for pos, txt in text_ticks:
self.ctx.move_to(pos, h - config.ruler_large_tick)
self.ctx.line_to(pos, h - 1)
self.ctx.stroke()
vshift = config.ruler_text_vshift
hshift = config.ruler_text_hshift
for pos, txt in text_ticks:
for character in txt:
data = HFONT[character]
position = int(pos) + hshift
self.ctx.set_source_surface(data[1], position, vshift)
self.ctx.paint()
pos += data[0]
def vrender(self, w, h):
self.ctx.move_to(w, 0)
self.ctx.line_to(w, h)
small_ticks, text_ticks = self.get_ticks()
for item in small_ticks:
self.ctx.move_to(w - config.ruler_small_tick, item)
self.ctx.line_to(w - 1, item)
for item, txt in text_ticks:
self.ctx.move_to(w - config.ruler_large_tick, item)
self.ctx.line_to(w - 1, item)
self.ctx.stroke()
vshift = config.ruler_text_vshift
hshift = config.ruler_text_hshift
for pos, txt in text_ticks:
for character in txt:
data = VFONT[character]
position = int(pos) - data[0] - hshift
self.ctx.set_source_surface(data[1], vshift, position)
self.ctx.paint()
pos -= data[0]
