1 # This file is part of jack_mixer
3 # Copyright (C) 2006 Nedko Arnaudov <nedko@arnaudov.name>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; version 2 of the License
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
21 from gi.repository import Gtk
22 from gi.repository import Gdk
23 from gi.repository import GObject
26 log = logging.getLogger(__name__)
29 class AdjustmentdBFS(Gtk.Adjustment):
30 def __init__(self, scale, default_db, step_inc):
31 self.default_value = scale.db_to_scale(default_db)
34 self.step_increment = step_inc
35 Gtk.Adjustment.__init__(self, self.default_value, 0.0, 1.0, 0.02)
36 self.connect("value-changed", self.on_value_changed)
37 self.disable_value_notify = False
40 self.set_value(self.get_value() + self.step_increment)
43 self.set_value(self.get_value() - self.step_increment)
46 self.set_value(self.default_value)
48 def get_value_db(self):
51 def set_value_db(self, db, from_midi = False):
53 self.disable_value_notify = True
54 self.set_value(self.scale.db_to_scale(db))
55 self.disable_value_notify = False
57 self.emit("volume-changed")
59 self.emit("volume-changed-from-midi")
61 def on_value_changed(self, adjustment):
62 if not self.disable_value_notify:
63 self.db = self.scale.scale_to_db(self.get_value())
64 self.emit("volume-changed")
66 def set_scale(self, scale):
68 self.disable_value_notify = True
69 self.set_value(self.scale.db_to_scale(self.db))
70 self.disable_value_notify = False
72 GObject.signal_new("volume-changed", AdjustmentdBFS,
73 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION, None, [])
75 GObject.signal_new("volume-changed-from-midi", AdjustmentdBFS,
76 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION, None, [])
78 class BalanceAdjustment(Gtk.Adjustment):
80 Gtk.Adjustment.__init__(self, 0.0, -1.0, 1.0, 0.02)
81 self.connect("value-changed", self.on_value_changed)
82 self.disable_value_notify = False
84 def set_balance(self, value, from_midi = False):
85 self.disable_value_notify = True
87 self.disable_value_notify = False
89 self.emit("balance-changed")
91 def on_value_changed(self, adjustment):
92 if not self.disable_value_notify:
93 self.emit("balance-changed")
95 GObject.signal_new("balance-changed", BalanceAdjustment,
96 GObject.SignalFlags.RUN_FIRST | GObject.SignalFlags.ACTION, None, [])
98 class GtkSlider(Gtk.VScale):
99 def __init__(self, adjustment):
100 Gtk.VScale.__init__(self)#, adjustment)
101 self.adjustment = adjustment
102 self.set_adjustment(adjustment)
103 self.set_draw_value(False)
104 self.set_inverted(True)
105 self.button_down = False
106 self.button_down_y = 0
107 self.button_down_value = 0
109 self.connect('button-press-event', self.button_press_event)
110 self.connect('button-release-event', self.button_release_event)
111 self.connect("motion-notify-event", self.motion_notify_event)
112 self.connect("scroll-event", self.scroll_event)
114 def button_press_event(self, widget, event):
115 if not event.state & Gdk.ModifierType.CONTROL_MASK and event.button == 1 and event.type == Gdk.EventType.BUTTON_PRESS:
116 self.button_down = True
117 self.button_down_y = event.y
118 self.button_down_value = self.adjustment.get_value()
120 if not event.state & Gdk.ModifierType.CONTROL_MASK and event.button == 1 and event.type == Gdk.EventType._2BUTTON_PRESS:
121 self.adjustment.set_value(0)
123 if event.state & Gdk.ModifierType.CONTROL_MASK and event.button == 1 and event.type == Gdk.EventType.BUTTON_PRESS:
124 self.adjustment.set_value(self.adjustment.scale.db_to_scale(1))
128 def button_release_event(self, widget, event):
129 self.button_down = False
132 def motion_notify_event(self, widget, event):
133 slider_length = widget.get_allocation().height - widget.get_style_context().get_property('min-height', Gtk.StateFlags.NORMAL)
135 delta_y = (self.button_down_y - event.y) / slider_length
136 y = self.button_down_value + delta_y
141 self.adjustment.set_value(y)
144 def scroll_event(self, widget, event):
145 delta = self.adjustment.step_increment
146 value = self.adjustment.get_value()
147 if event.direction == Gdk.ScrollDirection.UP:
149 elif event.direction == Gdk.ScrollDirection.DOWN:
151 elif event.direction == Gdk.ScrollDirection.SMOOTH:
152 y = value - event.delta_y * delta
158 self.adjustment.set_value(y)
161 class CustomSliderWidget(Gtk.DrawingArea):
162 def __init__(self, adjustment):
163 Gtk.DrawingArea.__init__(self)
165 self.adjustment = adjustment
167 self.connect("draw", self.on_expose)
168 self.connect("size_allocate", self.on_size_allocate)
169 adjustment.connect("value-changed", self.on_value_changed)
170 self.connect("button-press-event", self.on_mouse)
171 self.connect("motion-notify-event", self.on_mouse)
172 self.connect("scroll-event", self.on_scroll)
173 self.set_events(Gdk.EventMask.BUTTON1_MOTION_MASK |
174 Gdk.EventMask.SCROLL_MASK | Gdk.EventMask.BUTTON_PRESS_MASK)
176 def on_scroll(self, widget, event):
177 delta = self.adjustment.step_increment
178 value = self.adjustment.get_value()
179 if event.direction == Gdk.ScrollDirection.UP:
181 elif event.direction == Gdk.ScrollDirection.DOWN:
187 self.adjustment.set_value(y)
190 def on_mouse(self, widget, event):
191 if event.type == Gdk.EventType.BUTTON_PRESS:
192 log.debug("Mouse button %u pressed %ux%u", event.button, event.x, event.y)
193 if event.button == 1:
194 if event.y >= self.slider_rail_up and event.y < self.slider_rail_up + self.slider_rail_height:
195 self.adjustment.set_value(1 - float(event.y - self.slider_rail_up)/float(self.slider_rail_height))
196 elif event.type == Gdk.EventType.MOTION_NOTIFY:
197 log.debug("Mouse motion %ux%u", event.x, event.y)
198 if event.y < self.slider_rail_up:
199 y = self.slider_rail_up
200 elif event.y > self.slider_rail_up + self.slider_rail_height:
201 y = self.slider_rail_up + self.slider_rail_height
204 self.adjustment.set_value(1 - float(y - self.slider_rail_up)/float(self.slider_rail_height))
208 def on_value_changed(self, adjustment):
209 self.invalidate_all()
211 def on_expose(self, widget, cairo_ctx):
217 def get_preferred_width(self, widget):
218 minimal_width = natural_width = self.width
219 return (minimal_width, natural_width)
221 def get_preferred_height(self, widget):
222 requisition = Gtk.Requisition()
223 on_size_request(self, widget, requisition)
224 minimal_height = natural_heigt = requisition.height
225 return (minimal_height, natural_height)
228 def on_size_allocate(self, widget, allocation):
229 self.width = float(allocation.width)
230 self.height = float(allocation.height)
233 def on_size_request(self, widget, requisition):
234 requisition.width = 20
237 def invalidate_all(self):
238 if hasattr(self, 'width') and hasattr(self, 'height'):
239 self.queue_draw_area(0, 0, int(self.width), int(self.height))
241 def draw(self, cairo_ctx):
243 state = Gtk.StateType.PRELIGHT
245 state = Gtk.StateType.NORMAL
247 #cairo_ctx.rectangle(0, 0, self.width, self.height)
248 #cairo_ctx.set_source_color(self.style.bg[state])
249 #cairo_ctx.fill_preserve()
250 #Gdk.cairo_set_source_color(cairo_ctx,
251 # self.get_style_context().get_color(state).to_color())
254 slider_knob_width = 37.5 if self.width * 3 / 4 > 37.5 else self.width * 3 / 4
255 slider_knob_height = slider_knob_width * 2
256 slider_knob_height -= slider_knob_height % 2
257 slider_knob_height += 1
259 slider_x = self.width/2
261 cairo_ctx.set_line_width(1)
264 Gdk.cairo_set_source_color(cairo_ctx,
265 self.get_style_context().get_color(state).to_color())
266 self.slider_rail_up = slider_knob_height/2 + (self.width - slider_knob_width)/2
267 self.slider_rail_height = self.height - 2 * self.slider_rail_up
268 cairo_ctx.move_to(slider_x, self.slider_rail_up)
269 cairo_ctx.line_to(slider_x, self.slider_rail_height + self.slider_rail_up)
273 slider_y = round(self.slider_rail_up + self.slider_rail_height * (1 - self.adjustment.get_value()))
274 lg = cairo.LinearGradient(slider_x -
275 float(slider_knob_width)/2, slider_y - slider_knob_height/2,
276 slider_x - float(slider_knob_width)/2, slider_y +
277 slider_knob_height/2)
279 lg.add_color_stop_rgba(0, 0.55, 0.55, 0.55, slider_alpha)
280 lg.add_color_stop_rgba(0.1, 0.65, 0.65, 0.65, slider_alpha)
281 lg.add_color_stop_rgba(0.1, 0.75, 0.75, 0.75, slider_alpha)
282 lg.add_color_stop_rgba(0.125, 0.75, 0.75, 0.75, slider_alpha)
283 lg.add_color_stop_rgba(0.125, 0.15, 0.15, 0.15, slider_alpha)
284 lg.add_color_stop_rgba(0.475, 0.35, 0.35, 0.35, slider_alpha)
285 lg.add_color_stop_rgba(0.475, 0, 0, 0, slider_alpha)
286 lg.add_color_stop_rgba(0.525, 0, 0, 0, slider_alpha)
287 lg.add_color_stop_rgba(0.525, 0.35, 0.35, 0.35, slider_alpha)
288 lg.add_color_stop_rgba(0.875, 0.65, 0.65, 0.65, slider_alpha)
289 lg.add_color_stop_rgba(0.875, 0.75, 0.75, 0.75, slider_alpha)
290 lg.add_color_stop_rgba(0.900, 0.75, 0.75, 0.75, slider_alpha)
291 lg.add_color_stop_rgba(0.900, 0.15, 0.15, 0.15, slider_alpha)
292 lg.add_color_stop_rgba(1.000, 0.10, 0.10, 0.10, slider_alpha)
293 cairo_ctx.rectangle(slider_x - float(slider_knob_width)/2,
294 slider_y - slider_knob_height/2,
295 float(slider_knob_width),
297 Gdk.cairo_set_source_color(cairo_ctx,
298 self.get_style_context().get_background_color(state).to_color())
299 cairo_ctx.fill_preserve()
300 cairo_ctx.set_source(lg)