import sys import numpy import wx import colorsys from itertools import izip from itertools import cycle from .svg import PIXELS_PER_MM, color_block_to_point_lists 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 = 800 if self.max_width < self.min_width: self.max_width = self.min_width self.load(stitch_plan) wx.Frame.__init__(self, *args, **kwargs) self.SetBackgroundColour('white') self.panel = wx.Panel(self, wx.ID_ANY) self.panel.SetBackgroundStyle(wx.BG_STYLE_PAINT) self.stitch_slider = wx.Slider(self, value=1, minValue=1, maxValue=len(self.lines), style = wx.SL_HORIZONTAL|wx.SL_LABELS) self.slider_sizer = wx.BoxSizer(wx.HORIZONTAL) self.slider_sizer.Add(self.stitch_slider, 1, wx.EXPAND) self.button_sizer = wx.StdDialogButtonSizer() 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], [_("Backwards"), _('Backwards'), self.animation_backwards], [_("Forwards"), _('Forwards'), self.animation_forwards], [_("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 = wx.BoxSizer(wx.VERTICAL) self.sizer.Add(self.panel, 1, wx.EXPAND) self.sizer.Add(self.slider_sizer, 0, wx.EXPAND) self.sizer.Add(self.button_sizer, 0, wx.EXPAND) self.SetSizer(self.sizer) 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.BufferedDC() self.dc.SelectObject(self.buffer) self.canvas = wx.GraphicsContext.Create(self.dc) self.clear() self.current_frame = 1 self.set_stitch_counter(0) self.animation_direction = 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, wx.WXK_RIGHT, self.animation_forwards), (wx.ACCEL_NORMAL, wx.WXK_LEFT, self.animation_backwards), (wx.ACCEL_NORMAL, wx.WXK_NUMPAD_RIGHT, self.animation_forwards), (wx.ACCEL_NORMAL, wx.WXK_NUMPAD_LEFT, self.animation_backwards), (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.Bind(wx.EVT_SLIDER, self.on_slider) 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.stitch_plan_to_lines(stitch_plan) self.move_to_top_left() self.calculate_dimensions() return def adjust_speed(self, duration): self.frame_period = 1000 * float(duration) / len(self.lines) 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.current_frame = 1 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) self.set_stitch_counter(self.current_frame) if self.timer.IsRunning(): self.timer.Stop() self.timer.Start(self.frame_period) def animation_backwards(self, event): self.animation_direction = -1 if self.current_frame > 0: self.timer.Start(self.frame_period) def animation_forwards(self, event): self.animation_direction = 1 if self.current_frame <= len(self.lines): self.timer.Start(self.frame_period) def set_stitch_counter(self, current_frame): if hasattr(self.panel, 'stitch_counter'): self.panel.stitch_counter.SetLabel(_("Stitch # ") + str(current_frame) + ' / ' + str(len(self.lines))) 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.lines)), pos=(30, 10)) self.panel.stitch_counter.SetFont(self.font) self.panel.stitch_counter.SetForegroundColour('red') self.panel.stitch_counter.SetBackgroundColour('white') def on_slider(self, event): self.panel.SetFocus() self.draw_one_frame() obj = event.GetEventObject() self.current_frame = obj.GetValue() self.animation_update_timer() def set_stitch_slider(self, val): self.stitch_slider.SetValue(val) 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_lines(self, stitch_plan): self.pens = [] self.lines = [] for color_block in stitch_plan: pen = self.color_to_pen(color_block.color) for i, point_list in enumerate(color_block_to_point_lists(color_block)): if i == 0: # add the first stitch first_x, first_y = point_list[0] self.lines.append((first_x, first_y, first_x, first_y)) self.pens.append(pen) # 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:]): line = (start[0], start[1], end[0], end[1]) self.lines.append(line) self.pens.append(pen) def move_to_top_left(self): """remove any unnecessary whitespace around the design""" min_x = sys.maxint min_y = sys.maxint for x1, y1, x2, y2 in self.lines: min_x = min(min_x, x2) min_y = min(min_y, y2) new_lines = [] for line in self.lines: (start, end, start1, end1) = line new_lines.append((start - min_x, end - min_y, start1 - min_x, end1 - min_y)) self.lines = new_lines 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 x1, y1, x2, y2 in self.lines: width = max(width, x2) height = max(height, y2) self.width = width self.height = height self.scale = min(float(self.max_width - self.margin * 2) / width, float(self.max_height - self.margin * 2 - 90) / height) # make room for decorations and the margin self.scale *= 0.95 for i, point in enumerate(self.lines): x1, x2, y1, y2 = point 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.lines[i] = (x1, x2, y1, y2) def go(self): self.clear() self.current_frame = 1 if not self.timer: self.timer = wx.PyTimer(self.iterate_frames) 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 + 90 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.AutoBufferedPaintDC(self.panel) dc.Blit(0, 0, self.buffer.GetWidth(), self.buffer.GetHeight(), self.dc, 0, 0) self.last_pos_x, self.last_pos_y, self.last_pos_x1, self.last_pos_y1 = self.lines[0] if hasattr(self, 'visible_lines'): if len(self.visible_lines) > 0: self.last_pos_x1, self.last_pos_y1, self.last_pos_x, self.last_pos_y = self.visible_lines[-1] dc.DrawLine(self.last_pos_x - 10, self.last_pos_y, self.last_pos_x + 10, self.last_pos_y) dc.DrawLine(self.last_pos_x, self.last_pos_y - 10, self.last_pos_x, self.last_pos_y + 10) def iterate_frames(self): self.current_frame += 1 * self.animation_direction self.set_stitch_counter(self.current_frame) self.set_stitch_slider(self.current_frame) self.draw_one_frame() if self.current_frame >= len(self.lines) or self.current_frame <= 1: self.timer.Stop() def draw_one_frame(self): self.clear() self.visible_lines = self.lines[:self.current_frame] self.dc.DrawLineList(self.visible_lines, self.pens[:self.current_frame])