inkstitch/lib/simulator.py

344 wiersze
12 KiB
Python

import sys
import numpy
import wx
import colorsys
from itertools import izip
from .svg import PIXELS_PER_MM, color_block_to_point_lists
from .i18n import _
class EmbroiderySimulator(wx.Frame):
def __init__(self, *args, **kwargs):
stitch_plan = kwargs.pop('stitch_plan', None)
self.x_position = kwargs.pop('x_position', None)
self.on_close_hook = kwargs.pop('on_close', None)
self.frame_period = kwargs.pop('frame_period', 80)
self.stitches_per_frame = kwargs.pop('stitches_per_frame', 1)
self.target_duration = kwargs.pop('target_duration', None)
self.margin = 30
screen_rect = self.get_current_screen_rect()
self.max_width = kwargs.pop('max_width', screen_rect[2])
self.max_height = kwargs.pop('max_height', screen_rect[3])
self.scale = 1
self.min_width = 600
if self.max_width < self.min_width:
self.max_width = self.min_width
wx.Frame.__init__(self, *args, **kwargs)
self.panel = wx.Panel(self, wx.ID_ANY)
self.panel.SetDoubleBuffered(True)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.button_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.button_label = (
[_("Speed up"), _('Press + or arrow up to speed up'), self.animation_speed_up],
[_("Slow down"), _('Press - or arrow down to slow down'), self.animation_slow_down],
[_("Pause"), _("Press P to pause the animation"), self.animation_pause],
[_("Restart"), _("Press R to restart the animation"), self.animation_restart],
[_("Quit"), _("Press Q to close the simulation window"), self.animation_quit])
self.buttons = []
for i in range(0, len(self.button_label)):
self.buttons.append(wx.Button(self, -1, self.button_label[i][0]))
self.button_sizer.Add(self.buttons[i], 1, wx.EXPAND)
self.buttons[i].SetToolTip(self.button_label[i][1])
self.buttons[i].Bind(wx.EVT_BUTTON, self.button_label[i][2])
self.sizer.Add(self.panel, 1, wx.EXPAND)
self.sizer.Add(self.button_sizer, 0, wx.EXPAND)
self.SetSizer(self.sizer)
self.load(stitch_plan)
if self.target_duration:
self.adjust_speed(self.target_duration)
self.buffer = wx.Bitmap(self.width * self.scale + self.margin * 2, self.height * self.scale + self.margin * 2)
self.dc = wx.MemoryDC()
self.dc.SelectObject(self.buffer)
self.canvas = wx.GraphicsContext.Create(self.dc)
self.clear()
self.set_stitch_counter(1)
shortcut_keys = [
(wx.ACCEL_NORMAL, ord('+'), self.animation_speed_up),
(wx.ACCEL_NORMAL, ord('='), self.animation_speed_up),
(wx.ACCEL_SHIFT, ord('='), self.animation_speed_up),
(wx.ACCEL_NORMAL, wx.WXK_ADD, self.animation_speed_up),
(wx.ACCEL_NORMAL, wx.WXK_NUMPAD_ADD, self.animation_speed_up),
(wx.ACCEL_NORMAL, wx.WXK_NUMPAD_UP, self.animation_speed_up),
(wx.ACCEL_NORMAL, wx.WXK_UP, self.animation_speed_up),
(wx.ACCEL_NORMAL, ord('-'), self.animation_slow_down),
(wx.ACCEL_NORMAL, ord('_'), self.animation_slow_down),
(wx.ACCEL_NORMAL, wx.WXK_SUBTRACT, self.animation_slow_down),
(wx.ACCEL_NORMAL, wx.WXK_NUMPAD_SUBTRACT, self.animation_slow_down),
(wx.ACCEL_NORMAL, wx.WXK_NUMPAD_DOWN, self.animation_slow_down),
(wx.ACCEL_NORMAL, wx.WXK_DOWN, self.animation_slow_down),
(wx.ACCEL_NORMAL, ord('r'), self.animation_restart),
(wx.ACCEL_NORMAL, ord('p'), self.animation_pause),
(wx.ACCEL_NORMAL, ord('q'), self.animation_quit)]
accel_entries = []
for shortcut_key in shortcut_keys:
eventId = wx.NewId()
accel_entries.append((shortcut_key[0], shortcut_key[1], eventId))
self.Bind(wx.EVT_MENU, shortcut_key[2], id=eventId)
accel_table = wx.AcceleratorTable(accel_entries)
self.SetAcceleratorTable(accel_table)
self.Bind(wx.EVT_SIZE, self.on_size)
self.Bind(wx.EVT_CLOSE, self.on_close)
self.panel.Bind(wx.EVT_PAINT, self.on_paint)
self.panel.SetFocus()
self.timer = None
self.last_pos = None
def get_current_screen_rect(self):
current_screen = wx.Display.GetFromPoint(wx.GetMousePosition())
display = wx.Display(current_screen)
screen_rect = display.GetClientArea()
return screen_rect
def load(self, stitch_plan=None):
if stitch_plan:
self.mirror = False
self.segments = self._stitch_plan_to_segments(stitch_plan)
else:
return
self.trim_margins()
self.calculate_dimensions()
def adjust_speed(self, duration):
self.frame_period = 1000 * float(duration) / len(self.segments)
self.stitches_per_frame = 1
while self.frame_period < 1.0:
self.frame_period *= 2
self.stitches_per_frame *= 2
def animation_speed_up(self, event):
if self.frame_period == 1:
self.stitches_per_frame *= 2
else:
self.frame_period = self.frame_period / 2
self.animation_update_timer()
def animation_slow_down(self, event):
if self.stitches_per_frame == 1:
self.frame_period *= 2
else:
self.stitches_per_frame /= 2
self.animation_update_timer()
def animation_restart(self, event):
self.stop()
self.clear()
self.go()
def animation_pause(self, event):
if self.timer.IsRunning():
self.timer.Stop()
else:
self.timer.Start(self.frame_period)
def animation_quit(self, event):
self.Close()
def animation_update_timer(self):
self.frame_period = max(1, self.frame_period)
self.stitches_per_frame = max(self.stitches_per_frame, 1)
if self.timer.IsRunning():
self.timer.Stop()
self.timer.Start(self.frame_period)
def set_stitch_counter(self, current_stitch):
if hasattr(self.panel, 'stitch_counter'):
self.panel.stitch_counter.SetLabel(_("Stitch # ") + str(current_stitch) + ' / ' + str(len(self.segments) + 1))
else:
self.font = wx.Font(9, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_NORMAL)
self.panel.stitch_counter = wx.StaticText(self, label=_("Stitch #") + '1 / ' + str(len(self.segments)), pos=(30, 10))
self.panel.stitch_counter.SetFont(self.font)
self.panel.stitch_counter.SetForegroundColour('red')
self.panel.stitch_counter.SetBackgroundColour('white')
def _strip_quotes(self, string):
if string.startswith('"') and string.endswith('"'):
string = string[1:-1]
return string
def color_to_pen(self, color):
return wx.Pen(color.visible_on_white.rgb)
def _stitch_plan_to_segments(self, stitch_plan):
segments = []
for color_block in stitch_plan:
pen = self.color_to_pen(color_block.color)
for point_list in color_block_to_point_lists(color_block):
# if there's only one point, there's nothing to do, so skip
if len(point_list) < 2:
continue
for start, end in izip(point_list[:-1], point_list[1:]):
segments.append(((start, end), pen))
return segments
def all_coordinates(self):
for segment in self.segments:
start, end = segment[0]
yield start
yield end
def trim_margins(self):
"""remove any unnecessary whitespace around the design"""
min_x = sys.maxint
min_y = sys.maxint
for x, y in self.all_coordinates():
min_x = min(min_x, x)
min_y = min(min_y, y)
new_segments = []
for segment in self.segments:
(start, end), color = segment
new_segment = (
(
(start[0] - min_x, start[1] - min_y),
(end[0] - min_x, end[1] - min_y),
),
color
)
new_segments.append(new_segment)
self.segments = new_segments
def calculate_dimensions(self):
# 0.01 avoids a division by zero below for designs with no width or
# height (e.g. a straight vertical or horizontal line)
width = 0.01
height = 0.01
for x, y in self.all_coordinates():
width = max(width, x)
height = max(height, y)
self.width = width
self.height = height
self.scale = min(float(self.max_width - self.margin * 2) / width, float(self.max_height - self.margin * 2 - 40) / height)
# make room for decorations and the margin
self.scale *= 0.95
def go(self):
self.clear()
self.current_stitch = 0
if not self.timer:
self.timer = wx.PyTimer(self.draw_one_frame)
self.timer.Start(self.frame_period)
def on_close(self, event):
self.stop()
if self.on_close_hook:
self.on_close_hook()
# If we keep a reference here, wx crashes when the process exits.
self.canvas = None
self.Destroy()
def stop(self):
if self.timer:
self.timer.Stop()
def clear(self):
self.dc.SetBackground(wx.Brush('white'))
self.dc.Clear()
self.last_pos = None
self.Refresh()
def on_size(self, e):
# ensure that the whole canvas is visible
window_width, window_height = self.GetSize()
client_width, client_height = self.GetClientSize()
decorations_width = window_width - client_width
decorations_height = window_height - client_height + 40
setsize_window_width = self.width * self.scale + decorations_width + self.margin * 2
setsize_window_height = (self.height) * self.scale + decorations_height + self.margin * 2
# set minimum width (force space for control buttons)
if setsize_window_width < self.min_width:
setsize_window_width = self.min_width
self.SetSize(( setsize_window_width, setsize_window_height))
# center the simulation on screen if not called by params
# else center vertically
if self.x_position == None:
self.Centre()
else:
display_rect = self.get_current_screen_rect()
self.SetPosition((self.x_position, display_rect[3] / 2 - setsize_window_height / 2))
e.Skip()
def on_paint(self, e):
dc = wx.PaintDC(self.panel)
dc.Blit(0, 0, self.buffer.GetWidth(), self.buffer.GetHeight(), self.dc, 0, 0)
if self.last_pos:
dc.DrawLine(self.last_pos[0] - 10, self.last_pos[1], self.last_pos[0] + 10, self.last_pos[1])
dc.DrawLine(self.last_pos[0], self.last_pos[1] - 10, self.last_pos[0], self.last_pos[1] + 10)
def draw_one_frame(self):
for i in xrange(self.stitches_per_frame):
try:
((x1, y1), (x2, y2)), color = self.segments[self.current_stitch]
if self.mirror:
y1 = self.height - y1
y2 = self.height - y2
x1 = x1 * self.scale + self.margin
y1 = y1 * self.scale + self.margin
x2 = x2 * self.scale + self.margin
y2 = y2 * self.scale + self.margin
self.canvas.SetPen(color)
self.canvas.DrawLines(((x1, y1), (x2, y2)))
self.Refresh()
self.current_stitch += 1
self.last_pos = (x2, y2)
self.set_stitch_counter(self.current_stitch + 1)
except IndexError:
self.timer.Stop()