def _get_paint_chip_shadow(color):
"""Paint chip shadow edge color"""
shadow = HCYColor(color=color)
ky = gui.style.PAINT_CHIP_SHADOW_HCY_Y_MULT
kc = gui.style.PAINT_CHIP_SHADOW_HCY_C_MULT
shadow.y = clamp(shadow.y * ky, 0, 1)
shadow.c = clamp(shadow.c * kc, 0, 1)
return shadow
def _get_paint_chip_shadow(color):
"""Paint chip shadow edge color"""
shadow = HCYColor(color=color)
ky = gui.style.PAINT_CHIP_SHADOW_HCY_Y_MULT
kc = gui.style.PAINT_CHIP_SHADOW_HCY_C_MULT
shadow.y = clamp(shadow.y * ky, 0, 1)
shadow.c = clamp(shadow.c * kc, 0, 1)
return shadow
def _get_paint_chip_highlight(color):
"""Paint chip highlight edge color"""
highlight = HCYColor(color=color)
ky = gui.style.PAINT_CHIP_HIGHLIGHT_HCY_Y_MULT
kc = gui.style.PAINT_CHIP_HIGHLIGHT_HCY_C_MULT
highlight.y = clamp(highlight.y * ky, 0, 1)
highlight.c = clamp(highlight.c * kc, 0, 1)
return highlight
def _get_paint_chip_highlight(color):
"""Paint chip highlight edge color"""
highlight = HCYColor(color=color)
ky = gui.style.PAINT_CHIP_HIGHLIGHT_HCY_Y_MULT
kc = gui.style.PAINT_CHIP_HIGHLIGHT_HCY_C_MULT
highlight.y = clamp(highlight.y * ky, 0, 1)
highlight.c = clamp(highlight.c * kc, 0, 1)
return highlight
def __motion_notify_cb(self, widget, event):
"""Button1 motion handler."""
pos = event.x, event.y
if (self.__button_down is not None) and self.__button_down == 1:
if self.IS_DRAG_SOURCE:
if not self.__drag_start_color:
return False
start_pos = self.__drag_start_pos
dx = pos[0] - start_pos[0]
dy = pos[1] - start_pos[1]
dist = math.hypot(dx, dy)
if (dist > self._drag_threshold) and self.__drag_start_color:
logger.debug(
"Start drag (dist=%0.3f) with colour %r",
dist, self.__drag_start_color,
)
self.__drag_start_color = None
self.drag_begin_with_coordinates(
targets = Gtk.TargetList.new([
Gtk.TargetEntry.new(*e)
for e in self._DRAG_TARGETS
]),
actions = Gdk.DragAction.MOVE | Gdk.DragAction.COPY,
button = 1,
event = event,
x = event.x,
y = event.y,
)
return True # a drag was just started
else:
# Non-drag-source widgets update the color continuously while
# the mouse button is held down and the pointer moved.
color = self.get_color_at_position(event.x, event.y)
self.set_managed_color(color)
# Relative chroma/luma/hue bending with other buttons.
elif ((self.__button_down is not None) and self.ALLOW_HCY_TWEAKING
and self.__button_down > 1):
if self.__drag_start_color is None:
return False
col = HCYColor(color=self.__drag_start_color)
alloc = self.get_allocation()
w, h = alloc.width, alloc.height
size = max(w, h)
ex, ey = event.x, event.y
sx, sy = self.__drag_start_pos
dx, dy = sx - ex, sy - ey
# Pick a dimension to tweak
if event.state & Gdk.ModifierType.SHIFT_MASK:
bend = "chroma"
dy = -dy
elif event.state & Gdk.ModifierType.CONTROL_MASK:
bend = "hue"
else:
bend = "luma"
dy = -dy
# Interpretation of dx depends on text direction
if widget.get_direction() == Gtk.TextDirection.RTL:
dx = -dx
# Use the delta with the largest absolute value
# FIXME: this has some jarring discontinities
dd = dx if abs(dx) > abs(dy) else dy
if bend == "chroma":
c0 = clamp(col.c, 0., 1.)
p = (c0 * size) - dd
col.c = clamp(p / size, 0., 1.)
elif bend == "hue":
h0 = clamp(col.h, 0., 1.)
p = (h0 * size) - dd
h = p / size
while h < 0:
h += 1.0
col.h = h % 1.0
else: # luma
y0 = clamp(col.y, 0., 1.)
p = (y0 * size) - dd
col.y = clamp(p / size, 0., 1.)
self.set_managed_color(col)
# Let other registered handlers run, normally.
return False
def __motion_notify_cb(self, widget, event):
"""Button1 motion handler."""
pos = event.x, event.y
if self.__button_down == 1:
if self.IS_DRAG_SOURCE:
if not self.__drag_start_pos:
return False
start_pos = self.__drag_start_pos
dx = pos[0] - start_pos[0]
dy = pos[1] - start_pos[1]
dist = math.hypot(dx, dy)
if (dist > self._drag_threshold) and self.__drag_start_color:
logger.debug(
"Start drag (dist=%0.3f) with colour %r",
dist, self.__drag_start_color,
)
self.__drag_start_color = None
self.drag_begin_with_coordinates(
targets = Gtk.TargetList.new([
Gtk.TargetEntry.new(*e)
for e in self._DRAG_TARGETS
]),
actions = Gdk.DragAction.MOVE | Gdk.DragAction.COPY,
button = 1,
event = event,
x = event.x,
y = event.y,
)
return True # a drag was just started
else:
# Non-drag-source widgets update the color continuously while
# the mouse button is held down and the pointer moved.
color = self.get_color_at_position(event.x, event.y)
self.set_managed_color(color)
# Relative chroma/luma/hue bending with other buttons.
elif self.ALLOW_HCY_TWEAKING and self.__button_down > 1:
if self.__drag_start_color is None:
return False
col = HCYColor(color=self.__drag_start_color)
alloc = self.get_allocation()
w, h = alloc.width, alloc.height
size = max(w, h)
ex, ey = event.x, event.y
sx, sy = self.__drag_start_pos
dx, dy = sx - ex, sy - ey
# Pick a dimension to tweak
if event.state & Gdk.ModifierType.SHIFT_MASK:
bend = "chroma"
dy = -dy
elif event.state & Gdk.ModifierType.CONTROL_MASK:
bend = "hue"
else:
bend = "luma"
dy = -dy
# Interpretation of dx depends on text direction
if widget.get_direction() == Gtk.TextDirection.RTL:
dx = -dx
# Use the delta with the largest absolute value
# FIXME: this has some jarring discontinities
dd = dx if abs(dx) > abs(dy) else dy
if bend == "chroma":
c0 = clamp(col.c, 0., 1.)
p = (c0 * size) - dd
col.c = clamp(p / size, 0., 1.)
elif bend == "hue":
h0 = clamp(col.h, 0., 1.)
p = (h0 * size) - dd
h = p / size
while h < 0:
h += 1.0
col.h = h % 1.0
else: # luma
y0 = clamp(col.y, 0., 1.)
p = (y0 * size) - dd
col.y = clamp(p / size, 0., 1.)
self.set_managed_color(col)
# Let other registered handlers run, normally.
return False
def color_at_normalized_polar_pos(self, r, theta):
col = HCYColor(color=self.get_managed_color())
col.h = theta
col.c = r
return col
def color_at_normalized_polar_pos(self, r, theta):
col = HCYColor(color=self.get_managed_color())
col.h = theta
col.c = r
return col
def _palette_render(palette, cr, rows, columns, swatch_size,
bg_color, offset_x=0, offset_y=0,
rtl=False):
"""Renders a Palette according to a precalculated grid.
:param cr: a Cairo context
:param int rows: number of rows in the layout
:param int columns: number of columns in the layout
:param int swatch_size: size of each swatch, in pixels
:param lib.color.UIColor bg_color: color used when rendering the patterned
placeholder for an empty palette slot.
:param bool rtl: layout direction: set to True to render right to left,
instead of left to right. Currently ignored.
"""
HIGHLIGHT_DLUMA = 0.05
if len(palette) == 0:
return
if rows is None or columns is None:
return
cr.save()
cr.translate(offset_x, offset_y)
# Sizes and colors
swatch_w = swatch_h = swatch_size
light_col = HCYColor(color=bg_color)
light_col.y += HIGHLIGHT_DLUMA
dark_col = HCYColor(color=bg_color)
dark_col.y -= HIGHLIGHT_DLUMA
if light_col.y >= 1:
light_col.y = 1.0
dark_col.y = 1.0 - (2*HIGHLIGHT_DLUMA)
if dark_col.y <= 0:
dark_col.y = 0.0
light_col.y = 0.0 + (2*HIGHLIGHT_DLUMA)
# Upper left outline (bottom right is covered below by the
# individual chips' shadows)
ul_col = HCYColor(color=bg_color)
ul_col.y *= 0.75
ul_col.c *= 0.5
cr.set_line_join(cairo.LINE_JOIN_ROUND)
cr.set_line_cap(cairo.LINE_CAP_ROUND)
cr.set_source_rgb(*ul_col.get_rgb())
cr.move_to(0.5, rows*swatch_h - 1)
cr.line_to(0.5, 0.5)
row1cells = min(columns, len(palette)) # needed?
cr.line_to(row1cells*swatch_w - 1, 0.5)
cr.set_line_width(2)
cr.stroke()
# Draw into the predefined grid
r = c = 0
cr.set_line_width(1.0)
cr.set_line_cap(cairo.LINE_CAP_SQUARE)
for col in palette.iter_colors():
s_x = c*swatch_w
s_y = r*swatch_h
s_w = swatch_w
s_h = swatch_h
# Select fill bg and pattern fg colors, Tango-style edge highlight
# and lower-right shadow.
if col is None:
# Empty slot, fill with a pattern
hi_rgb = light_col.get_rgb()
fill_bg_rgb = dark_col.get_rgb()
fill_fg_rgb = light_col.get_rgb()
sh_col = HCYColor(color=bg_color)
sh_col.y *= 0.75
sh_col.c *= 0.5
sh_rgb = sh_col.get_rgb()
else:
# Color swatch
hi_col = HCYColor(color=col)
hi_col.y = min(hi_col.y * 1.1, 1)
hi_col.c = min(hi_col.c * 1.1, 1)
sh_col = HCYColor(color=col)
sh_col.y *= 0.666
sh_col.c *= 0.5
hi_rgb = hi_col.get_rgb()
fill_bg_rgb = col.get_rgb()
fill_fg_rgb = None
sh_rgb = sh_col.get_rgb()
# Draw the swatch / color chip
cr.set_source_rgb(*sh_rgb)
cr.rectangle(s_x, s_y, s_w, s_h)
cr.fill()
cr.set_source_rgb(*fill_bg_rgb)
cr.rectangle(s_x, s_y, s_w-1, s_h-1)
cr.fill()
if fill_fg_rgb is not None:
s_w2 = int((s_w-1) / 2)
s_h2 = int((s_h-1) / 2)
cr.set_source_rgb(*fill_fg_rgb)
cr.rectangle(s_x, s_y, s_w2, s_h2)
cr.fill()
cr.rectangle(s_x+s_w2, s_y+s_h2, s_w2, s_h2)
cr.fill()
cr.set_source_rgb(*hi_rgb)
cr.rectangle(s_x+0.5, s_y+0.5, s_w-2, s_h-2)
cr.stroke()
c += 1
if c >= columns:
c = 0
r += 1
cr.restore()
def get_color_for_bar_amount(self, amt):
col = HCYColor(color=self.get_managed_color())
col.c = amt
return col
def get_color_for_bar_amount(self, amt):
col = HCYColor(color=self.get_managed_color())
col.c = amt
return col