-#!/usr/bin/env python
-#
# This file is part of jack_mixer
#
# Copyright (C) 2006 Nedko Arnaudov <nedko@arnaudov.name>
-#
+#
# 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; version 2 of the License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-import gtk
+import logging
+
import cairo
+from gi.repository import Gtk
+from gi.repository import Gdk
-class meter(gtk.DrawingArea):
- def __init__(self, scale):
- gtk.DrawingArea.__init__(self)
- self.scale = scale
+log = logging.getLogger(__name__)
- self.connect("expose-event", self.on_expose)
- self.connect("size-request", self.on_size_request)
- self.connect("size_allocate", self.on_size_allocate)
- self.color_bg = gtk.gdk.Color(0,0,0)
- self.color_value = gtk.gdk.Color(int(65535 * 0.8), int(65535 * 0.7), 0)
- self.color_mark = gtk.gdk.Color(int(65535 * 0.2), int(65535 * 0.2), int(65535 * 0.2))
+class MeterWidget(Gtk.DrawingArea):
+ def __init__(self, scale):
+ log.debug("Creating MeterWidget for scale %s", scale)
+ super().__init__()
+ self.scale = scale
+ self.color_bg = Gdk.Color(0,0,0)
+ self.color_value = None
+ self.color_mark = Gdk.Color(int(65535 * 0.2), int(65535 * 0.2), int(65535 * 0.2))
self.width = 0
self.height = 0
+ self.cache_surface = None
+ self.min_width = 15
+ self.preferred_width = 25
+ self.preferred_height = 200
+
+ self.widen()
+
+ self.connect("draw", self.draw)
+ self.connect("size-allocate", self.on_size_allocate)
+
+ def narrow(self):
+ return self.widen(False)
+
+ def widen(self, flag=True):
+ self.set_size_request(self.preferred_width if flag else self.min_width,
+ self.preferred_height)
+
+ def set_color(self, color):
+ self.color_value = color
+ self.cache_surface = None
+ self.invalidate_all()
def on_expose(self, widget, event):
cairo_ctx = widget.window.cairo_create()
-
# set a clip region for the expose event
cairo_ctx.rectangle(event.area.x, event.area.y, event.area.width, event.area.height)
cairo_ctx.clip()
return False
def on_size_allocate(self, widget, allocation):
- #print allocation.x, allocation.y, allocation.width, allocation.height
self.width = float(allocation.width)
self.height = float(allocation.height)
self.font_size = 10
-
- def on_size_request(self, widget, requisition):
- #print "size-request, %u x %u" % (requisition.width, requisition.height)
- requisition.width = 20
- return
+ self.cache_surface = None
def invalidate_all(self):
self.queue_draw_area(0, 0, int(self.width), int(self.height))
def draw_background(self, cairo_ctx):
- cairo_ctx.set_source_color(self.color_bg)
- cairo_ctx.rectangle(0, 0, self.width, self.height)
- cairo_ctx.fill()
-
- cairo_ctx.set_source_color(self.color_mark)
- cairo_ctx.select_font_face("Fixed")
- cairo_ctx.set_font_size(self.font_size)
- glyph_width = self.font_size * 3 / 5 # avarage glyph ratio
- for mark in self.scale.get_marks():
- mark_position = int(self.height * (1 - mark.scale))
- cairo_ctx.move_to(0, mark_position)
- cairo_ctx.line_to(self.width, mark_position)
- cairo_ctx.stroke()
- x_correction = self.width / 2 - glyph_width * len(mark.text) / 2
- cairo_ctx.move_to(x_correction, mark_position - 2)
- cairo_ctx.show_text(mark.text)
+ if not self.cache_surface:
+ self.cache_surface = cairo.Surface.create_similar(
+ cairo_ctx.get_target(),
+ cairo.CONTENT_COLOR,
+ int(self.width),
+ int(self.height))
+ cache_cairo_ctx = cairo.Context(self.cache_surface)
+
+ cache_cairo_ctx.set_source_rgba(0, 0, 0, 0)
+ cache_cairo_ctx.rectangle(0, 0, self.width, self.height)
+ cache_cairo_ctx.fill()
+
+ cache_cairo_ctx.set_source_rgba(0.2, 0.2, 0.2, 1)
+ cache_cairo_ctx.select_font_face("Fixed")
+ cache_cairo_ctx.set_font_size(self.font_size)
+ glyph_width = self.font_size * 3 / 5 # avarage glyph ratio
+
+ for mark in self.scale.get_marks():
+ mark_position = int(self.height * (1 - mark.scale))
+ cache_cairo_ctx.move_to(0, mark_position)
+ cache_cairo_ctx.line_to(self.width, mark_position)
+ cache_cairo_ctx.stroke()
+ x_correction = self.width / 2 - glyph_width * len(mark.text) / 2
+ cache_cairo_ctx.move_to(x_correction, mark_position - 2)
+ cache_cairo_ctx.show_text(mark.text)
+
+ cairo_ctx.set_source_surface(self.cache_surface, 0, 0)
+ cairo_ctx.paint()
def draw_value(self, cairo_ctx, value, x, width):
- height = self.allocation.height
- gradient = cairo.LinearGradient(1, 1, width-1, height-1)
- gradient.add_color_stop_rgb(0, 1, 0, 0)
- gradient.add_color_stop_rgb(0.2, 1, 1, 0)
- gradient.add_color_stop_rgb(1, 0, 1, 0)
- cairo_ctx.set_source(gradient)
+ if self.color_value is not None:
+ cairo_ctx.set_source_rgb(self.color_value.red/65535.,
+ self.color_value.green/65535., self.color_value.blue/65535.)
+ else:
+ height = self.height
+ gradient = cairo.LinearGradient(1, 1, width-1, height-1)
+
+ if self.scale.scale_id == "K20":
+ gradient.add_color_stop_rgb(0, 1, 0, 0)
+ gradient.add_color_stop_rgb(0.38, 1, 1, 0)
+ gradient.add_color_stop_rgb(0.5, 0, 1, 0)
+ gradient.add_color_stop_rgb(1, 0, 0, 1)
+ elif self.scale.scale_id == "K14":
+ gradient.add_color_stop_rgb(0, 1, 0, 0)
+ gradient.add_color_stop_rgb(1-self.scale.db_to_scale(-14), 1, 1, 0)
+ gradient.add_color_stop_rgb(1-self.scale.db_to_scale(-24), 0, 1, 0)
+ gradient.add_color_stop_rgb(1, 0, 0, 1)
+ else:
+ gradient.add_color_stop_rgb(0, 1, 0, 0)
+ gradient.add_color_stop_rgb(0.2, 1, 1, 0)
+ gradient.add_color_stop_rgb(1, 0, 1, 0)
+
+ cairo_ctx.set_source(gradient)
+
cairo_ctx.rectangle(x, self.height * (1 - value), width, self.height * value)
cairo_ctx.fill()
+ def draw_peak(self, cairo_ctx, value, x, width):
+ cairo_ctx.set_source_rgb(1, 1, 1)
+ cairo_ctx.rectangle(x, self.height * (1 - value), width, 2.5)
+ cairo_ctx.fill()
+
def set_scale(self, scale):
self.scale = scale
+ self.cache_surface = None
self.invalidate_all()
-class mono(meter):
+
+class MonoMeterWidget(MeterWidget):
def __init__(self, scale):
- meter.__init__(self, scale)
+ super().__init__(scale)
self.value = 0.0
+ self.pk = 0.0
+ self.raw_value = 0.0
+ self.raw_pk = 0.0
- def draw(self, cairo_ctx):
+ def draw(self, widget, cairo_ctx):
self.draw_background(cairo_ctx)
self.draw_value(cairo_ctx, self.value, self.width/4.0, self.width/2.0)
+ self.draw_peak(cairo_ctx, self.pk, self.width/4.0, self.width/2.0)
- def set_value(self, value):
- if value != self.value:
- self.value = self.scale.db_to_scale(value)
+ def set_values(self, pk, value):
+ if value == self.raw_value and pk == self.raw_pk:
+ return
+
+ self.raw_value = value
+ self.raw_pk = pk
+ old_value = self.value
+ old_pk = self.pk
+ self.value = self.scale.db_to_scale(value)
+ self.pk = self.scale.db_to_scale(pk)
+
+ if (abs(old_value-self.value) * self.height) > 0.01 or (abs(old_pk-self.pk) * self.height) > 0.01:
self.invalidate_all()
-class stereo(meter):
+
+class StereoMeterWidget(MeterWidget):
def __init__(self, scale):
- meter.__init__(self, scale)
+ super().__init__(scale)
+ self.pk_left = 0.0
+ self.pk_right = 0.0
+
self.left = 0.0
self.right = 0.0
- def draw(self, cairo_ctx):
+ self.raw_left_pk = 0.0
+ self.raw_right_pk = 0.0
+
+ self.raw_left = 0.0
+ self.raw_right = 0.0
+
+ def draw(self, widget, cairo_ctx):
self.draw_background(cairo_ctx)
self.draw_value(cairo_ctx, self.left, self.width/5.0, self.width/5.0)
self.draw_value(cairo_ctx, self.right, self.width/5.0 * 3.0, self.width/5.0)
-
- def set_values(self, left, right):
- if left != self.left or right != self.right:
- self.left = self.scale.db_to_scale(left)
- self.right = self.scale.db_to_scale(right)
+ self.draw_peak(cairo_ctx, self.pk_left, self.width/5.0, self.width/5.0)
+ self.draw_peak(cairo_ctx, self.pk_right, self.width/5.0 * 3.0, self.width/5.0)
+
+ def set_values(self, pk_l, pk_r, left, right):
+ if left == self.raw_left and right == self.raw_right and pk_l == self.raw_left_pk and pk_r == self.raw_right_pk:
+ return
+
+ self.raw_left = left
+ self.raw_right = right
+ self.raw_left_pk = pk_l
+ self.raw_right_pk = pk_r
+ old_left = self.left
+ old_right = self.right
+ old_pk_left = self.pk_left
+ old_pk_right = self.pk_right
+ self.left = self.scale.db_to_scale(left)
+ self.right = self.scale.db_to_scale(right)
+ self.pk_left = self.scale.db_to_scale(pk_l)
+ self.pk_right = self.scale.db_to_scale(pk_r)
+
+ if (abs(old_left-self.left) * self.height) > 0.01 or (abs(old_right-self.right) * self.height) > 0.01 or (abs(old_pk_left-self.pk_left) * self.height) > 0.01 or (abs(old_pk_right-self.pk_right) * self.height) > 0.01:
self.invalidate_all()
projects / jack_mixer.git / blobdiff