- Miscellany
- 2005 year 3 month 8 day Tuesday 17:05:11 MDT
- """
- cpu.py - ZeroDivide <zerodiv at gmail dot com>, 2005
- Themeable cpu monitor:
- This is the first of a few system monitors I
- plan to make that are themeable and stackable.
- """
- import adesklets
- import statgrab
- from os import getenv, system
- from os.path import join, dirname
- class Gauge:
- def __init__(self,canvas, basedir, image_dir, var_name):
- self.canvas=canvas
- self.basedir=basedir
- self.image_dir=image_dir
- self.var_name = var_name
- self.x=self.y=self.value=0
- adesklets.set( self.var_name, 0)
- self.image=adesklets.load_image('%s/%s' % (self.basedir, self.image_dir + 'center.png'))
- self.bgimage=adesklets.load_image('%s/%s' % (self.basedir, self.image_dir + 'bg.png'))
- # get image size
- adesklets.context_set_image(self.bgimage)
- self.w=adesklets.image_get_width()
- self.h=adesklets.image_get_height()
- def draw(self,background=0):
- #adesklets.blend_image_onto_image(background,0,self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h,
- # self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h)
- adesklets.blend_image_onto_image(self.image,0,
- 0,0,'$' + self.var_name,self.h,
- self.x+self.canvas.x,self.y+self.canvas.y,'$' + self.var_name,self.h)
- def update_background(self,background):
- #draw gauge background image on background
- adesklets.context_set_blend(True)
- self.bgimage=adesklets.load_image('%s/%s' % (self.basedir, self.image_dir + 'bg.png'))
- blend_state=adesklets.context_get_blend()
- adesklets.blend_image_onto_image(self.bgimage,1,0,0,self.w,self.h,
- self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h)
- adesklets.free_image(self.bgimage)
- #update gauge foreground image
- adesklets.context_set_blend(False)
- adesklets.context_set_image(self.image)
- temp_image=adesklets.clone_image()
- adesklets.blend_image_onto_image(background,0,self.x+self.canvas.x, self.y+self.canvas.y,self.w,self.h,0,0,self.w,self.h)
- adesklets.context_set_blend(True)
- adesklets.blend_image_onto_image(temp_image,1,0,0,self.w,self.h,0,0,self.w,self.h)
- adesklets.free_image(temp_image)
- adesklets.context_set_blend(blend_state)
- class Icon:
- def __init__(self,canvas,basedir,image_file):
- self.canvas=canvas
- self.basedir=basedir
- self.image_file=image_file
- self.x=self.y=self.w=self.h=0
- # get image size
- self.image=adesklets.load_image('%s/%s' % (self.basedir, self.image_file))
- adesklets.context_set_image(self.image)
- self.w=adesklets.image_get_width()
- self.h=adesklets.image_get_height()
- def update_background(self, background):
- adesklets.blend_image_onto_image(self.image,0,
- 0,0,self.w,self.h,
- self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h)
- class Text:
- def __init__(self,canvas, font, text, var_name):
- self.canvas=canvas
- self.var_name=var_name
- adesklets.set( self.var_name, 'Default')
- self.font=adesklets.load_font(font)
- self.text=text
- adesklets.context_set_font(self.font)
- size=adesklets.get_text_size(text)
- self.w=size[0]
- self.h=size[1]
- self.x=0
- self.y=0
- def draw(self,background=0):
- adesklets.context_set_color(0,0,0,255)
- adesklets.context_set_font(self.font)
- #
- #adesklets.blend_image_onto_image(background,0,self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h,
- # self.x+self.canvas.x,self.y+self.canvas.y,self.w,self.h)
- adesklets.text_draw(self.x+self.canvas.x, self.y+self.canvas.y, '$' + self.var_name)
- class Canvas:
- def __init__(self, x=0, y=0, w=0, h=0):
- self.x = x
- self.y = y
- self.w = w
- self.h = h
- class Config(adesklets.ConfigFile):
- """
- This is my configuration file description
- """
- cfg_default = { 'border' : 'images/borders/white-med/',
- 'border_mask' : 'images/border-mask/white-ext/',
- 'border_left' : True,
- 'border_right' : True,
- 'border_top' : True,
- 'border_bottom' : True,
- 'background_effect': 'tint(alpha=128,red=0,green=0,blue=0);',
- 'background_blur': '0',
- 'gauge' : 'images/gauge/rect-rect-white/',
- 'icon' : 'cpu.png',
- 'font' : 'VeraBd/8',
- 'font_color' : '#FFFFFF'}
- def __init__(self, id, filename):
- adesklets. ConfigFile.__init__(self, id, filename)
- class Events(adesklets.Events_handler):
- def __init__(self, basedir):
- if len(basedir)==0:
- self.basedir='.'
- else:
- self.basedir=basedir
- self.top_canvas=Canvas(0,0,200,0)
- self.w = None
- self.h = None
- self.buffer= None
- self.id= None
- self.delay=None
- self.border=None
- self.border_mask=None
- self.get_config()
- stats = statgrab.sg_get_cpu_percents()
- self.icon=Icon(self.top_canvas,self.basedir,self.config['icon'])
- self.cpu_gauge=Gauge(self.top_canvas,self.basedir,self.config['gauge'],'gauge')
- self.text=Text(self.top_canvas,'VeraBd/8','CPU Load 1000%','blah')
- margin=3
- self.icon.x=margin
- #### place gauge
- self.cpu_gauge.x=self.icon.x+self.icon.w+margin
- self.cpu_gauge.y=margin
- #### place text
- self.text.x=self.cpu_gauge.x
- self.text.y=self.cpu_gauge.y+self.cpu_gauge.h+margin
- #### calculate height of canvas
- self.top_canvas.h=self.text.y+self.text.h+margin
- #### center icon vertically
- self.icon.y = (self.top_canvas.h/2) - (self.icon.h/2)
- #### setup our border and border mask
- self.border=self.create_border_image(self.top_canvas,1,0,self.config['border'])
- self.border_mask=self.create_border_image(self.top_canvas,0,1,'images/border-masks/default/')
- #### fit our window to the border image
- adesklets.context_set_image(self.border)
- self.w = adesklets.image_get_width()
- self.h = adesklets.image_get_height()
- adesklets.Events_handler.__init__(self)
- def __del__(self):
- adesklets.Events_handler.__del__(self)
- def get_config(self):
- self.config=Config(adesklets.get_id(),
- join(self.basedir,'config.txt'))
- def ready(self):
- # We use a buffer image to avoid flickering */
- self.buffer=adesklets.create_image(self.w,self.h)
- self.record_display()
- # Set the window property
- adesklets.window_resize(self.w,self.h)
- adesklets.window_set_transparency(False)
- editor=getenv('EDITOR')
- if editor:
- adesklets.menu_add_separator()
- adesklets.menu_add_item('README')
- adesklets.menu_add_item('Configure')
- adesklets.window_show()
- def menu_fire(self, delayed, menu_id, item):
- if item=='Configure':
- editor=getenv('EDITOR')
- system('xterm -e %s %s/config.txt &' % (editor, self.basedir))
- elif item=='README':
- editor=getenv('EDITOR')
- system('xterm -e %s %s/README &' % (editor, self.basedir))
- def create_border_image(self, canvas, offset_canvas, mask, directory):
- """
- create border image around outside of canvas
- """
- #load images
- tl=adesklets.load_image('%s/%s' % (self.basedir, directory + 'top-left.png'))
- tr=adesklets.load_image('%s/%s' % (self.basedir, directory + 'top-right.png'))
- bl=adesklets.load_image('%s/%s' % (self.basedir, directory + 'bottom-left.png'))
- br=adesklets.load_image('%s/%s' % (self.basedir, directory + 'bottom-right.png'))
- l=adesklets.load_image('%s/%s' % (self.basedir, directory + 'left.png'))
- r=adesklets.load_image('%s/%s' % (self.basedir, directory + 'right.png'))
- t=adesklets.load_image('%s/%s' % (self.basedir, directory + 'top.png'))
- b=adesklets.load_image('%s/%s' % (self.basedir, directory + 'bottom.png'))
- #get border sizes
- adesklets.context_set_image(l)
- l_h=adesklets.image_get_height()
- l_w=adesklets.image_get_width()
- adesklets.context_set_image(r)
- r_h=adesklets.image_get_height()
- r_w=adesklets.image_get_width()
- adesklets.context_set_image(t)
- t_w=adesklets.image_get_width()
- t_h=adesklets.image_get_height()
- adesklets.context_set_image(b)
- b_w=adesklets.image_get_width()
- b_h=adesklets.image_get_height()
- #calculate destination image size and offset canvas if requested
- w=canvas.w
- h=canvas.h
- if self.config['border_top']==True:
- h+=t_h
- if offset_canvas:
- canvas.y += t_h
- if self.config['border_bottom']==True:
- h+=b_h
- if self.config['border_left']==True:
- w+=l_w
- if offset_canvas:
- canvas.x += l_w
- if self.config['border_right']==True:
- w+=r_w
- #create image
- image=adesklets.create_image(w,h)
- adesklets.context_set_blend(False)
- adesklets.context_set_image(image)
- if mask:
- adesklets.context_set_color(0,0,0,255)
- else:
- adesklets.context_set_color(0,0,0,0)
- adesklets.image_fill_rectangle(0,0,w,h)
- #draw sides
- if self.config['border_top']==True:
- adesklets.blend_image_onto_image(t,1,0,0,t_w,t_h,
- 0,0,w,t_h)
- if self.config['border_bottom']==True:
- adesklets.blend_image_onto_image(b,1,0,0,b_w,b_h,
- 0,h-b_h,w,b_h)
- if self.config['border_left']==True:
- adesklets.blend_image_onto_image(l,1,0,0,l_w,l_h,
- 0,0,l_w,h)
- if self.config['border_right']==True:
- adesklets.blend_image_onto_image(r,1,0,0,r_w,r_h,
- w-r_w,0,r_w,h)
- #draw corners
- if self.config['border_top']==True & self.config['border_left']==True:
- adesklets.context_set_image(tl)
- corner_w=adesklets.image_get_width()
- corner_h=adesklets.image_get_height()
- adesklets.context_set_image(image)
- adesklets.blend_image_onto_image(tl,1,0,0,corner_w,corner_h,0,0,corner_w,corner_h)
- if self.config['border_top']==True & self.config['border_right']==True:
- adesklets.context_set_image(tr)
- corner_w=adesklets.image_get_width()
- corner_h=adesklets.image_get_height()
- adesklets.context_set_image(image)
- adesklets.blend_image_onto_image(tr,1,0,0,corner_w,corner_h,w-corner_w,0,corner_w,corner_h)
- if self.config['border_bottom']==True & self.config['border_left']==True:
- adesklets.context_set_image(bl)
- corner_w=adesklets.image_get_width()
- corner_h=adesklets.image_get_height()
- adesklets.context_set_image(image)
- adesklets.blend_image_onto_image(bl,1,0,0,corner_w,corner_h,0,h-corner_h,corner_w,corner_h)
- if self.config['border_bottom']==True & self.config['border_right']==True:
- adesklets.context_set_image(br)
- corner_w=adesklets.image_get_width()
- corner_h=adesklets.image_get_height()
- adesklets.context_set_image(image)
- adesklets.blend_image_onto_image(br,1,0,0,corner_w,corner_h,w-corner_w,h-corner_h,corner_w,corner_h)
- #free our temp images
- for i in range(8):
- adesklets.free_image(tl)
- return image-8
- def background_grab(self, delayed):
- #copy background image to buffer and apply effects
- adesklets.context_set_blend(False)
- adesklets.context_set_image(self.buffer)
- adesklets.blend_image_onto_image(1,1,0,0,self.w,self.h,0,0,self.w,self.h)
- adesklets.apply_filter(self.config['background_effect'])
- adesklets.image_blur(self.config['background_blur'])
- #blend modified background onto our bordermask
- adesklets.context_set_blend(True)
- adesklets.context_set_image(self.border_mask)
- adesklets.blend_image_onto_image(self.buffer,0,0,0,self.w,self.h,0,0,self.w,self.h)
- #combine everything
- adesklets.context_set_blend(True)
- adesklets.context_set_image(1)
- adesklets.blend_image_onto_image(self.border_mask,0,0,0,self.w,self.h,0,0,self.w,self.h)
- adesklets.blend_image_onto_image(self.border,1,0,0,self.w,self.h,0,0,self.w,self.h)
- self.icon.update_background(1)
- self.cpu_gauge.update_background(1)
- #update our buffer with finished background
- adesklets.context_set_blend(False)
- adesklets.context_set_image(self.buffer)
- adesklets.blend_image_onto_image(1,1,0,0,self.w,self.h,0,0,self.w,self.h)
- #copy our new background to the foreground image
- adesklets.context_set_image(0)
- adesklets.blend_image_onto_image(1,1,0,0,self.w,self.h,0,0,self.w,self.h)
- adesklets.play(*self.display)
- def record_display(self):
- adesklets.start_recording()
- adesklets.context_set_image(self.buffer)
- adesklets.blend_image_onto_image(1,0,self.top_canvas.x,self.top_canvas.y,self.top_canvas.w,self.top_canvas.h,
- self.top_canvas.x,self.top_canvas.y,self.top_canvas.w,self.top_canvas.h)
- self.cpu_gauge.draw()
- self.text.draw()
- adesklets.context_set_image(0)
- adesklets.blend_image_onto_image(self.buffer,0,self.top_canvas.x,self.top_canvas.y,self.top_canvas.w,self.top_canvas.h,
- self.top_canvas.x,self.top_canvas.y,self.top_canvas.w,self.top_canvas.h)
- self.display=adesklets.stop_recording()
- adesklets.play_set_abort_on_events(False)
- def quit(self):
- print 'Quitting...'
- def get_cpu_stats(self):
- stats = statgrab.sg_get_cpu_percents()
- self.cpu_total = 100 - stats['idle']
- def alarm(self):
- self.block()
- self.get_cpu_stats()
- adesklets.set( self.cpu_gauge.var_name, int(self.cpu_total * (self.cpu_gauge.w / 100.0)) )
- adesklets.set( self.text.var_name, 'CPU Load ' + str(int(self.cpu_total)) + '%')
- adesklets.play(*self.display)
- self.unblock()
- return 1
- Events(dirname(__file__)).pause()
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