def expose(self, widget, event):
if self.is_sensitive():
alpha = 1
else:
alpha = 0.3
w = self.get_allocated_width()
h = self.get_allocated_height()
cr = widget.get_property('window').cairo_create()
def set_color(c):
return cr.set_source_rgba(c.red_float, c.green_float, c.blue_float,
alpha)
if (self.use_bitmaps == False):
linewidth = 4
x = y = linewidth / 2
w2 = w - linewidth
h2 = h - linewidth
x_center = x + w2 / 2
y_center = y + h2 / 2
degrees = math.pi / 180.0
cr.new_sub_path()
cr.arc(x + w2 - self.corner_radius, y + self.corner_radius,
self.corner_radius, -90 * degrees, 0 * degrees)
cr.arc(x + w2 - self.corner_radius, y + h2 - self.corner_radius,
self.corner_radius, 0 * degrees, 90 * degrees)
cr.arc(x + self.corner_radius, y + h2 - self.corner_radius,
self.corner_radius, 90 * degrees, 180 * degrees)
cr.arc(x + self.corner_radius, y + self.corner_radius,
self.corner_radius, 180 * degrees, 270 * degrees)
cr.close_path()
if (self.light_is_on):
color = self.light_on_color
if self.mouseover:
color = Gdk.color_from_hsv(color.hue,
color.saturation * .5,
color.value * 1.5)
color2 = Gdk.color_from_hsv(color.hue, color.saturation * .25,
color.value)
linecolor = Gdk.color_from_hsv(color.hue, color.saturation,
color.value * .95)
else:
color = self.light_off_color
if self.mouseover:
color = Gdk.color_from_hsv(color.hue,
color.saturation * .5,
color.value * 1.5)
if (self.dual_color):
color2 = Gdk.color_from_hsv(color.hue,
color.saturation * .25,
color.value)
linecolor = Gdk.color_from_hsv(color.hue, color.saturation,
color.value * .95)
else:
color1 = Gdk.color_from_hsv(color.hue,
color.saturation * .50,
color.value * 2)
color2 = Gdk.color_from_hsv(color.hue, color.saturation,
color.value * .50)
linecolor = Gdk.color_from_hsv(color.hue,
color.saturation * .50,
color.value * .75)
cr.set_line_width(linewidth)
set_color(linecolor)
cr.stroke_preserve()
if (self.light_is_on == True) or (self.dual_color == True):
gradient_radius = (w2 + h2)
g1 = cairo.RadialGradient(x_center, y_center, 0, x_center,
y_center, gradient_radius)
g1.add_color_stop_rgb(0.0, color2.red_float,
color2.green_float, color2.blue_float)
g1.add_color_stop_rgb(1.0, color.red_float, color.green_float,
color.blue_float)
else:
g1 = cairo.LinearGradient(x, y, x, y + h2)
g1.add_color_stop_rgb(0.0, color1.red_float,
color1.green_float, color1.blue_float)
g1.add_color_stop_rgb(0.0, color.red_float, color.green_float,
color.blue_float)
g1.add_color_stop_rgb(1.0, color2.red_float,
color2.green_float, color2.blue_float)
cr.set_source(g1)
cr.fill()
#Using bitmaps is not implemented. Bitmaps should not be scaled unless you figure out a way to make them scale nicely
#The main reason to use bitmaps would be if someone wants a different look from the default one
#The code below is the basic way to do it. update_widget_size() should use the button size instead of text size
#and there should be properties to set image filenames for each state (light on, light off, mouseover, etc)
else:
cr.save()
image = cairo.ImageSurface.create_from_png('resources/k_green.png')
img_w = image.get_width()
img_h = image.get_height()
print(float(w) / img_w, float(h) / img_h)
cr.set_source_surface(image, 0, 0)
cr.paint()
cr.restore()
# write text
_layout = self.default_pangolayout
if (self.light_is_on):
set_color(self.font_on_color)
if (not self.button_on_text == ""):
_layout = self.on_pangolayout
else:
set_color(self.font_off_color)
fontw, fonth = _layout.get_pixel_size()
cr.move_to((w - fontw) / 2, (h - fonth) / 2)
cr.update_layout(_layout)
cr.show_layout(_layout)
return False
