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# ##### BEGIN GPL LICENSE BLOCK #####
#
# 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 2
# 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, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
bl_info = {
'name': 'Display Keys Status for Screencasting',
'author': 'Paulo Gomes, Bartius Crouch',
'version': (1, 0),
'blender': (2, 5, 6),
'api': 35457,
'location': 'View3D > Properties panel > Display tab',
'warning': '',
'description': 'Display keys pressed in the 3d-view, '\
'useful for screencasts.',
'wiki_url': 'http://wiki.blender.org/index.php/Extensions:2.5/'\
'Py/Scripts/3D_interaction/Screencast_Key_Status_Tool',
'tracker_url': 'http://projects.blender.org/tracker/index.php?'\
'func=detail&aid=21612',
'category': '3D View'}
import bgl
import blf
import bpy
import time
def draw_callback_px(self, context):
wm = context.window_manager
if wm.display_keys:
# draw text in the 3d-view
blf.size(0, wm.display_font_size, 72)
r, g, b = wm.display_color
bgl.glColor3f(r, g, b)
final = 0
# only display key-presses of last 2 seconds
for i in range(len(self.key)):
label_age = time.time()-self.time[i]
if label_age < 2:
blf.position(0, wm.display_pos_x,
wm.display_pos_y + wm.display_font_size*i, 0)
if label_age > 1.5:
label_alpha = (2.0-label_age)*2
bgl.glColor4f(r, g, b, label_alpha)
blf.draw(0, self.key[i])
final = i
else:
break
# get rid of statuses that aren't displayed anymore
self.key = self.key[:final+1]
self.time = self.time[:final+1]
else:
return
class ScreencastKeysStatus(bpy.types.Operator):
bl_idname = "view3d.screencast_keys"
bl_label = "Screencast Key Status Tool"
bl_description = "Display keys pressed in the 3D-view"
def modal(self, context, event):
if context.area:
context.area.tag_redraw()
# keys that shouldn't show up in the 3d-view
mouse_keys = ['MOUSEMOVE','MIDDLEMOUSE','LEFTMOUSE',
'RIGHTMOUSE', 'WHEELDOWNMOUSE','WHEELUPMOUSE']
ignore_keys = ['LEFT_SHIFT', 'RIGHT_SHIFT', 'LEFT_ALT',
'RIGHT_ALT', 'LEFT_CTRL', 'RIGHT_CTRL', 'TIMER']
if not context.window_manager.display_mouse:
ignore_keys.extend(mouse_keys)
if event.value == 'PRESS':
# add key-press to display-list
sc_keys = []
if event.ctrl:
sc_keys.append("Ctrl ")
if event.alt:
sc_keys.append("Alt ")
if event.shift:
sc_keys.append("Shift ")
if event.type not in ignore_keys:
sc_keys.append(event.type)
self.key.insert(0, "+ ".join(map(str, sc_keys)))
self.time.insert(0, time.time())
if not context.window_manager.display_keys:
# stop script
context.region.callback_remove(self._handle)
return {'CANCELLED'}
return {'PASS_THROUGH'}
def invoke(self, context, event):
if context.area.type == 'VIEW_3D':
if context.window_manager.display_keys == False:
# operator is called for the first time, start everything
context.window_manager.display_keys = True
context.window_manager.modal_handler_add(self)
self._handle = context.region.callback_add(draw_callback_px,
(self, context), 'POST_PIXEL')
self.key = []
self.time = []
return {'RUNNING_MODAL'}
else:
# operator is called again, stop displaying
context.window_manager.display_keys = False
self.key = []
self.time = []
return {'CANCELLED'}
else:
self.report({'WARNING'}, "View3D not found, can't run operator")
return {'CANCELLED'}
# properties used by the script
def init_properties():
bpy.types.WindowManager.display_keys = bpy.props.BoolProperty(
default=False)
bpy.types.WindowManager.display_mouse = bpy.props.BoolProperty(
name="Mouse",
description="Display mouse events",
default=False)
bpy.types.WindowManager.display_font_size = bpy.props.IntProperty(
name="Size",
description="Fontsize",
default=20)
bpy.types.WindowManager.display_pos_x = bpy.props.IntProperty(
name="Pos X",
description="Position of the font in x axis",
default=15)
bpy.types.WindowManager.display_pos_y = bpy.props.IntProperty(
name="Pos Y",
description="Position of the font in y axis",
default=60)
bpy.types.WindowManager.display_color = bpy.props.FloatVectorProperty(
name="Colour",
description="Font colour",
default=(1.0, 1.0, 1.0),
min=0,
max=1,
subtype='COLOR')
# removal of properties when script is disabled
def clear_properties():
props = ["display_keys", "display_mouse", "display_font_size",
"display_pos_x", "display_pos_y"]
for p in props:
if bpy.context.window_manager.get(p) != None:
del bpy.context.window_manager[p]
try:
x = getattr(bpy.types.WindowManager, p)
del x
except:
pass
# defining the panel
class OBJECT_PT_keys_status(bpy.types.Panel):
bl_label = "Display Keys Status"
bl_space_type = "VIEW_3D"
bl_region_type = "UI"
def draw(self, context):
col = self.layout.column(align=False)
if not context.window_manager.display_keys:
col.operator("view3d.screencast_keys", text="Start display",
icon='PLAY')
else:
col.operator("view3d.screencast_keys", text="Stop display",
icon='PAUSE')
col = self.layout.column(align=True)
row = col.row(align=True)
row.prop(context.window_manager, "display_pos_x")
row.prop(context.window_manager, "display_pos_y")
row = col.row(align=True)
row.prop(context.window_manager, "display_font_size")
row.prop(context.window_manager, "display_mouse")
row = self.layout.row()
row.prop(context.window_manager, "display_color")
classes = [ScreencastKeysStatus,
OBJECT_PT_keys_status]
def register():
init_properties()
for c in classes:
bpy.utils.register_class(c)
def unregister():
for c in classes:
bpy.utils.unregister_class(c)
clear_properties()
if __name__ == "__main__":
register()
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