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annotate pyink/frameline.py @ 947:a8ddbb6dac9e

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Doc key frame
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 16 Nov 2010 13:16:39 +0800
parents f82ac6740a32
children 518c61784355
rev   line source
944
b0edd13779ee Implement a frameline widget
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1 import pygtk
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2 pygtk.require("2.0")
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3 import gtk
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4 import gtk.gdk
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5 import gobject
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6
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7 def color_to_rgb(v):
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8 return (((v >> 16) & 0xff) * 65535 / 0xff,
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9 ((v >> 8) & 0xff) * 65535 / 0xff,
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10 (v & 0xff) * 65535 / 0xff)
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11
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12 class keyframe(object):
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13 def __init__(self, frame_idx):
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14 self.idx = frame_idx
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15 self.left_tween = False
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16 self.right_tween = False
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17 self.right_tween_type = 0
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18 pass
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19 pass
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20
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21 ## Show frame status of a layer
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22 #
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23 class frameline(gtk.DrawingArea):
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24 _type_id = 0
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25 _frame_width = 10 # Width for each frame is 10 pixels
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26 _select_color = 0xee2222 # color of border of selected frame
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27 _key_mark_color = 0x000000 # color of marks for key frames.
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28 _key_mark_sz = 4 # width and height of a key frame mark
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29 _tween_color = 0x808080 # color of tween line
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30 _tween_bgcolors = [0x80ff80, 0xff8080] # bg colors of tween frames
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31 # Colors for normal frames
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32 _normal_bgcolors = [0xffffff, 0xffffff, 0xffffff, 0xffffff, 0xcccccc]
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33 _normal_border = 0xaaaaaa # border color of normal frames.
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34 _active_border = 0xff3030 # border color of an active frame
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35
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36 def __new__(clz, *args):
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37 if not frameline._type_id:
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38 frameline._type_id = gobject.type_register(frameline)
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39 pass
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40 fl_obj = gobject.new(frameline._type_id)
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41 return fl_obj
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42
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43 def __init__(self, num_frames=20):
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44 self.connect('expose_event', self._fl_expose)
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45 self._num_frames = num_frames
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46 self._keys = []
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47 self._active_frame = -1
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48 pass
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49
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50 def _fl_expose(self, widget, event):
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51 print 'Expose %s' % (repr(event))
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52 win = self.window
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53 x, y, w, h, depth = win.get_geometry()
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54 print ' Geometry of window: %dx%d+%d+%d' % (w, h, x, y)
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55 self.update()
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56 pass
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57
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58 def _draw_tween(self, first_key, last_key):
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59 win = self.window
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60 w_x, w_y, w_w, w_h, depth = win.get_geometry()
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61
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62 #
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63 # Get background color of a tween
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64 #
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65 bg_idx = first_key.right_tween_type
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66 bg_color_v = self._tween_bgcolors[bg_idx]
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67 bg_color_rgb = color_to_rgb(bg_color_v)
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68 bg_color = gtk.gdk.Color(*bg_color_rgb)
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69
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70 gc = self._gc
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71 gc.set_rgb_fg_color(bg_color)
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72
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73 draw_x = first_key.idx * self._frame_width + 1
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74 draw_w = (last_key.idx - first_key.idx + 1) * self._frame_width - 1
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75
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76 win.draw_rectangle(gc, True, draw_x, 0, draw_w, w_h)
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77
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78 #
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79 # Set color of tween line
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80 #
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81 line_v = self._tween_color
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82 line_rgb = color_to_rgb(line_v)
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83 line_color = gtk.gdk.Color(*line_rgb)
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84 gc.set_rgb_fg_color(line_color)
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85
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86 #
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87 # Draw tween line
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88 #
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89 line_x1 = (first_key.idx + 0.5) * self._frame_width
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90 line_x2 = line_x1 + (last_key.idx - first_key.idx) * self._frame_width
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91 line_y = w_h * 2 / 3
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92 win.draw_line(gc, line_x1, line_y, line_x2, line_y)
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93 pass
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94
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95 def _draw_frame(self, idx):
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96 win = self.window
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97 w_x, w_y, w_w, w_h, depth = win.get_geometry()
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98
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99 gc = self._gc
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100 bg_idx = idx % len(self._normal_bgcolors)
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101 rgb = color_to_rgb(self._normal_bgcolors[bg_idx])
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102 color = gtk.gdk.Color(*rgb)
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103 gc.set_rgb_fg_color(color)
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104
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105 f_x = self._frame_width * idx
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106 win.draw_rectangle(gc, True, f_x + 1, 0, self._frame_width, w_h)
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107 next_f_x = f_x + self._frame_width
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108
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109 border_rgb = color_to_rgb(self._normal_border)
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110 border_color = gtk.gdk.Color(*border_rgb)
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111 gc.set_rgb_fg_color(border_color)
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112 gc.set_line_attributes(1, gtk.gdk.LINE_SOLID,
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113 gtk.gdk.CAP_BUTT, gtk.gdk.JOIN_MITER)
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114 win.draw_line(gc, next_f_x, 0, next_f_x, w_h)
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115 pass
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116
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117 def _draw_frames(self):
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118 win = self.window
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119 gc = gtk.gdk.GC(win)
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120 self._gc = gc
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121
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122 i = 0
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123 key_i = 0
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124 try:
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125 key = self._keys[key_i]
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126 except IndexError:
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127 key = keyframe(self._num_frames)
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128 pass
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129 num_frames = self._num_frames
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130 while i < num_frames:
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131 if key.idx == i:
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132 #
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133 # Skip tween keys
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134 #
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135 first_tween_key = key
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136 while key.idx == i or key.left_tween:
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137 last_tween_key = key
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138 key_i = key_i + 1
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139 try:
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140 key = self._keys[key_i]
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141 except IndexError:
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142 key = keyframe(self._num_frames)
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143 pass
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144 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
145
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
146 if first_tween_key != last_tween_key:
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parents:
diff changeset
147 self._draw_tween(first_tween_key, last_tween_key)
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parents:
diff changeset
148
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diff changeset
149 i = last_tween_key.idx + 1
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parents:
diff changeset
150 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
151 else:
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parents:
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152 self._draw_frame(i)
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parents:
diff changeset
153 i = i + 1
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parents:
diff changeset
154 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
155 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
156 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
157
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Thinker K.F. Li <thinker@codemud.net>
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158 def _draw_keyframes(self):
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159 win = self.window
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160 w_x, w_y, w_w, w_h, depth = win.get_geometry()
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diff changeset
161
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162 color_v = self._key_mark_color
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diff changeset
163 color_rgb = color_to_rgb(color_v)
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164 color = gtk.gdk.Color(*color_rgb)
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diff changeset
165
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166 gc = self._gc
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167 gc.set_rgb_fg_color(color)
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diff changeset
168
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169 for key in self._keys:
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170 mark_sz = self._key_mark_sz
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parents:
diff changeset
171 mark_x = int((key.idx + 0.5) * self._frame_width - mark_sz / 2)
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172 mark_y = w_h * 2 / 3 - mark_sz / 2
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parents:
diff changeset
173
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174 win.draw_rectangle(gc, True, mark_x, mark_y, mark_sz, mark_sz)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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175 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
176 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
177
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178 def _draw_active(self):
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179 win = self.window
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parents:
diff changeset
180 w_x, w_y, w_w, w_h, depth = win.get_geometry()
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181
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diff changeset
182 color_v = self._active_border
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
183 color_rgb = color_to_rgb(color_v)
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diff changeset
184 color = gtk.gdk.Color(*color_rgb)
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diff changeset
185
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diff changeset
186 gc = self._gc
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187 gc.set_rgb_fg_color(color)
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diff changeset
188
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189 idx = self._active_frame
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
190 line_x1 = idx * self._frame_width
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
191 line_x2 = line_x1 + self._frame_width
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
192
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parents:
diff changeset
193 win.draw_line(gc, line_x1, 0, line_x1, w_h)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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194 win.draw_line(gc, line_x2, 0, line_x2, w_h)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
195 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
196
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diff changeset
197 def update(self):
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198 win = self.window
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diff changeset
199 x, y, w, h, depth = win.get_geometry()
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diff changeset
200
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diff changeset
201 self._draw_frames()
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parents:
diff changeset
202 self._draw_keyframes()
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diff changeset
203 if self._active_frame != -1:
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diff changeset
204 self._draw_active()
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parents:
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205 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
206 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
207
947
a8ddbb6dac9e Doc key frame
Thinker K.F. Li <thinker@codemud.net>
parents: 946
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208 ## Add a key frame
a8ddbb6dac9e Doc key frame
Thinker K.F. Li <thinker@codemud.net>
parents: 946
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209 #
a8ddbb6dac9e Doc key frame
Thinker K.F. Li <thinker@codemud.net>
parents: 946
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210 # A key frame is the frame that user specify actions. For
a8ddbb6dac9e Doc key frame
Thinker K.F. Li <thinker@codemud.net>
parents: 946
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211 # example, move a object or add new objects at the frame.
944
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
212 def add_keyframe(self, idx):
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Thinker K.F. Li <thinker@codemud.net>
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213 key_indic = [key.idx for key in self._keys]
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parents:
diff changeset
214 if idx in key_indic:
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parents:
diff changeset
215 return
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diff changeset
216
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diff changeset
217 key_indic.append(idx)
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
218 key_indic.sort()
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diff changeset
219 insert_pos = key_indic.index(idx)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
220
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parents:
diff changeset
221 key = keyframe(idx)
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
222 self._keys[insert_pos:insert_pos] = [key]
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
223 if insert_pos > 0 and self._keys[insert_pos - 1].right_tween:
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
224 key.left_tween = True
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
225 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
226 if insert_pos < (len(self._keys) - 1) and \
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
227 self._keys[insert_pos + 1].left_tween:
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
228 key.right_tween = True
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
229 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
230 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
231
946
f82ac6740a32 change wording in doc
Thinker K.F. Li <thinker@codemud.net>
parents: 945
diff changeset
232 ## Tween the key frame specified by an index and the key frame at right.
944
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Thinker K.F. Li <thinker@codemud.net>
parents:
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233 #
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parents:
diff changeset
234 # \see http://www.entheosweb.com/Flash/shape_tween.asp
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parents:
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235 def tween(self, idx, _type=0):
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
236 key_indic = [key.idx for key in self._keys]
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
237 pos = key_indic.index(idx)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
238 key = self._keys[pos]
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
239
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
240 try:
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
241 right_key = self._keys[pos + 1]
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
242 except IndexError:
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
243 raise ValueError, 'No right key frame'
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
244
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
245 key.right_tween = True
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
246 right_key.left_tween = True
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
247 key.right_tween_type = _type
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
248 pass
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
249
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Thinker K.F. Li <thinker@codemud.net>
parents:
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250 ## Set active frame
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Thinker K.F. Li <thinker@codemud.net>
parents:
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251 #
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parents:
diff changeset
252 # The active frame is the frame that is working on.
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
253 #
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
254 def active_frame(self, idx):
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
255 if idx < 0 or idx >= self._num_frames:
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
256 raise IndexError, 'value of index (%d) is out of range' % (idx)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
257
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
258 self._active_frame = idx
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
259 pass
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
260
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
261 def deactive(self):
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
262 self._active_frame = -1
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
263 pass
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
264
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
265 def set_num_frames(self, num):
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
266 self._num_frames = num
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
267 pass
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
268
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
269 def __len__(self):
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parents:
diff changeset
270 return self._num_frames
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
271 pass
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
272
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
273 if __name__ == '__main__':
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
274 window = gtk.Window(gtk.WINDOW_TOPLEVEL)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
275 fl = frameline(40)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
276 fl.set_size_request(300, 30)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
277 fl.add_keyframe(3)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
278 fl.add_keyframe(9)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
279 fl.add_keyframe(15)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
280 fl.add_keyframe(20)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
281 fl.tween(3)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
282 fl.tween(15, 1)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
283 fl.active_frame(15)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
284 print 'num of frames: %d' % (len(fl))
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
285
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
286 window.add(fl)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
287 fl.show()
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
288 window.show()
b0edd13779ee Implement a frameline widget
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
289 gtk.main()
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
290 pass