def redraw(self, color_change=False):
tdw = self.doc.tdw
if color_change:
tdw.queue_draw()
else:
prev_trash = self._prev_disable_button_rectangle
new_trash = self._disable_button_rectangle
if prev_trash:
tdw.queue_draw_area(*prev_trash)
if new_trash:
tdw.queue_draw_area(*new_trash)
old_corners = tuple(pairwise(self._prev_display_corners))
new_corners = tuple(pairwise(self._display_corners))
prev = self._prev_rectangles
new = self._new_rectangles
for i, (r1, r2) in enumerate(zip(prev, new)):
if r1 == r2:
continue # Skip if unchanged
if r1 and r2:
r1.expand_to_include_rect(r2)
tdw.queue_draw_area(*r1)
elif r1 or r2:
r = r1 or r2
corners = new_corners if r == r1 else old_corners
if corners:
(cx0, cy0), (cx1, cy1) = corners[i]
r.expand_to_include_point(cx0, cy0)
r.expand_to_include_point(cx1, cy1)
tdw.queue_draw_area(*r)
else:
tdw.queue_draw()
return
def get_color_at_position(self, x, y, ignore_mask=False):
"""Converts an `x`, `y` position to a color.
Ordinarily, this implmentation uses any active mask to limit the
colors which can be clicked on. Set `ignore_mask` to disable this
added behaviour.
"""
sup = HueSaturationWheelMixin
if ignore_mask or not self.mask_toggle.get_active():
return sup.get_color_at_position(self, x, y)
voids = self.get_mask_voids()
if not voids:
return sup.get_color_at_position(self, x, y)
isects = []
for vi, void in enumerate(voids):
# If we're inside a void, use the unchanged value
if geom.point_in_convex_poly((x, y), void):
return sup.get_color_at_position(self, x, y)
# If outside, find the nearest point on the nearest void's edge
for p1, p2 in geom.pairwise(void):
isect = geom.nearest_point_in_segment(p1, p2, (x, y))
if isect is not None:
d = math.sqrt((isect[0] - x)**2 + (isect[1] - y)**2)
isects.append((d, isect))
# Above doesn't include segment ends, so add those
d = math.sqrt((p1[0] - x)**2 + (p1[1] - y)**2)
isects.append((d, p1))
# Determine the closest point.
if isects:
isects.sort()
x, y = isects[0][1]
return sup.get_color_at_position(self, x, y)
def get_color_at_position(self, x, y, ignore_mask=False):
"""Converts an `x`, `y` position to a color.
Ordinarily, this implmentation uses any active mask to limit the
colors which can be clicked on. Set `ignore_mask` to disable this
added behaviour.
"""
sup = HueSaturationWheelMixin
if ignore_mask or not self.mask_toggle.get_active():
return sup.get_color_at_position(self, x, y)
voids = self.get_mask_voids()
if not voids:
return sup.get_color_at_position(self, x, y)
isects = []
for vi, void in enumerate(voids):
# If we're inside a void, use the unchanged value
if geom.point_in_convex_poly((x, y), void):
return sup.get_color_at_position(self, x, y)
# If outside, find the nearest point on the nearest void's edge
for p1, p2 in geom.pairwise(void):
isect = geom.nearest_point_in_segment(p1, p2, (x, y))
if isect is not None:
d = math.sqrt((isect[0]-x)**2 + (isect[1]-y)**2)
isects.append((d, isect))
# Above doesn't include segment ends, so add those
d = math.sqrt((p1[0]-x)**2 + (p1[1]-y)**2)
isects.append((d, p1))
# Determine the closest point.
if isects:
isects.sort()
x, y = isects[0][1]
return sup.get_color_at_position(self, x, y)
def __dist_to_nearest_shape(self, x, y):
# Distance from `x`, `y` to the nearest edge or vertex of any shape.
dists = []
for hull in self.get_mask_voids():
# cx, cy = geom.poly_centroid(hull)
for p1, p2 in geom.pairwise(hull):
np = geom.nearest_point_in_segment(p1, p2, (x, y))
if np is not None:
nx, ny = np
d = math.sqrt((x - nx)**2 + (y - ny)**2)
dists.append(d)
# Segment end too
d = math.sqrt((p1[0] - x)**2 + (p1[1] - y)**2)
dists.append(d)
if not dists:
return None
dists.sort()
return dists[0]
def __dist_to_nearest_shape(self, x, y):
# Distance from `x`, `y` to the nearest edge or vertex of any shape.
dists = []
for hull in self.get_mask_voids():
# cx, cy = geom.poly_centroid(hull)
for p1, p2 in geom.pairwise(hull):
nearest_point = geom.nearest_point_in_segment(p1, p2, (x, y))
if nearest_point is not None:
nx, ny = nearest_point
d = math.sqrt((x-nx)**2 + (y-ny)**2)
dists.append(d)
# Segment end too
d = math.sqrt((p1[0]-x)**2 + (p1[1]-y)**2)
dists.append(d)
if not dists:
return None
dists.sort()
return dists[0]
def __update_active_objects(self, x, y):
# Decides what a click or a drag at (x, y) would do, and updates the
# mouse cursor and draw state to match.
assert self.__drag_func is None
self.__active_shape = None
self.__active_ctrlpoint = None
self.__tmp_new_ctrlpoint = None
self.queue_draw() # yes, always
# Possible mask void manipulations
mask = self.get_mask()
for mask_idx in xrange(len(mask)):
colors = mask[mask_idx]
if len(colors) < 3:
continue
# If the pointer is near an existing control point, clicking and
# dragging will move it.
void = []
for col_idx in xrange(len(colors)):
col = colors[col_idx]
px, py = self.get_pos_for_color(col)
dp = math.sqrt((x - px)**2 + (y - py)**2)
if dp <= self.__ctrlpoint_grab_radius:
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__active_ctrlpoint = col_idx
self.__set_cursor(None)
return
void.append((px, py))
# If within a certain distance of an edge, dragging will create and
# then move a new control point.
void = geom.convex_hull(void)
for p1, p2 in geom.pairwise(void):
isect = geom.nearest_point_in_segment(p1, p2, (x, y))
if isect is not None:
ix, iy = isect
di = math.sqrt((ix - x)**2 + (iy - y)**2)
if di <= self.__ctrlpoint_grab_radius:
newcol = self.get_color_at_position(ix, iy)
self.__tmp_new_ctrlpoint = newcol
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__set_cursor(None)
return
# If the mouse is within a mask void, then dragging would move that
# shape around within the mask.
if geom.point_in_convex_poly((x, y), void):
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__set_cursor(None)
return
# Away from shapes, clicks and drags manipulate the entire mask: adding
# cutout voids to it, or rotating the whole mask around its central
# axis.
alloc = self.get_allocation()
cx, cy = self.get_center(alloc=alloc)
radius = self.get_radius(alloc=alloc)
dx, dy = x - cx, y - cy
r = math.sqrt(dx**2 + dy**2)
if r < radius * (1.0 - self.min_shape_size):
if len(mask) < self.__max_num_shapes:
d = self.__dist_to_nearest_shape(x, y)
minsize = radius * self.min_shape_size
if d is None or d > minsize:
# Clicking will result in a new void
self.__set_cursor(self.__add_cursor)
else:
# Click-drag to rotate the entire mask
self.__set_cursor(self.__rotate_cursor)
def __update_active_objects(self, x, y):
# Decides what a click or a drag at (x, y) would do, and updates the
# mouse cursor and draw state to match.
assert self.__drag_func is None
self.__active_shape = None
self.__active_ctrlpoint = None
self.__tmp_new_ctrlpoint = None
self.queue_draw() # yes, always
# Possible mask void manipulations
mask = self.get_mask()
for mask_idx in xrange(len(mask)):
colors = mask[mask_idx]
if len(colors) < 3:
continue
# If the pointer is near an existing control point, clicking and
# dragging will move it.
void = []
for col_idx in xrange(len(colors)):
col = colors[col_idx]
px, py = self.get_pos_for_color(col)
dp = math.sqrt((x-px)**2 + (y-py)**2)
if dp <= self.__ctrlpoint_grab_radius:
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__active_ctrlpoint = col_idx
self.__set_cursor(None)
return
void.append((px, py))
# If within a certain distance of an edge, dragging will create and
# then move a new control point.
void = geom.convex_hull(void)
for p1, p2 in geom.pairwise(void):
isect = geom.nearest_point_in_segment(p1, p2, (x, y))
if isect is not None:
ix, iy = isect
di = math.sqrt((ix-x)**2 + (iy-y)**2)
if di <= self.__ctrlpoint_grab_radius:
newcol = self.get_color_at_position(ix, iy)
self.__tmp_new_ctrlpoint = newcol
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__set_cursor(None)
return
# If the mouse is within a mask void, then dragging would move that
# shape around within the mask.
if geom.point_in_convex_poly((x, y), void):
mask.remove(colors)
mask.insert(0, colors)
self.__active_shape = colors
self.__set_cursor(None)
return
# Away from shapes, clicks and drags manipulate the entire mask: adding
# cutout voids to it, or rotating the whole mask around its central
# axis.
alloc = self.get_allocation()
cx, cy = self.get_center(alloc=alloc)
radius = self.get_radius(alloc=alloc)
dx, dy = x-cx, y-cy
r = math.sqrt(dx**2 + dy**2)
if r < radius*(1.0-self.min_shape_size):
if len(mask) < self.__max_num_shapes:
d = self.__dist_to_nearest_shape(x, y)
minsize = radius * self.min_shape_size
if d is None or d > minsize:
# Clicking will result in a new void
self.__set_cursor(self.__add_cursor)
else:
# Click-drag to rotate the entire mask
self.__set_cursor(self.__rotate_cursor)
def _recalculate_coordinates(self, redraw, *args):
"""Calculates geometric data that does not need updating every time"""
# Skip calculations when the frame is not enabled (this is important
# because otherwise all of this would be recalculated on moving,
# scaling and rotating the canvas.
if not (self.doc.model.frame_enabled or redraw):
return
tdw = self.doc.tdw
# Canvas rectangle - regular and offset
self._canvas_rect = Rect.new_from_gdk_rectangle(tdw.get_allocation())
self._canvas_rect_offset = self._canvas_rect.expanded(
self.OUTLINE_WIDTH * 4)
# Frame corners in model coordinates
x, y, w, h = tuple(self.doc.model.get_frame())
corners = [(x, y), (x + w, y), (x + w, y + h), (x, y + h)]
# Pixel-aligned frame corners in display space
d_corners = [tdw.model_to_display(mx, my) for mx, my in corners]
pxoffs = 0.5 if (self.OUTLINE_WIDTH % 2) else 0.0
self._prev_display_corners = self._display_corners
self._display_corners = tuple(
(int(x) + pxoffs, int(y) + pxoffs) for x, y in d_corners)
# Position of the button for disabling/deleting the frame
# Placed near the center of the frame, clamped to the viewport,
# with an offset so it does not cover visually small frames
# (when the frame _is_ small, or when zoomed out).
xs, ys = zip(*d_corners)
r = gui.style.FLOATING_BUTTON_RADIUS
tx, ty = self._canvas_rect.expanded(-2 * r).clamped_point(
sum(xs) / 4.0,
sum(ys) / 4.0)
self._trash_btn_pos = tx, ty
r += 6 # margin for drop shadows
self._prev_disable_button_rectangle = self._disable_button_rectangle
self._disable_button_rectangle = (tx - r, ty - r, r * 2, r * 2)
# Corners
self._zone_corners = []
radius = gui.style.DRAGGABLE_POINT_HANDLE_SIZE
canvas_limit = self._canvas_rect.expanded(radius)
for i, (cx, cy) in enumerate(d_corners):
if canvas_limit.contains_pixel(cx, cy):
self._zone_corners.append((cx, cy, self._ZONE_EDGES[i]))
# Intersecting frame lines & calculation of rectangles
l_type = LineType.SEGMENT
cx, cy, cw, ch = self._canvas_rect
canvas_corners = ((cx, cy), (cx + cw, cy), (cx + cw, cy + ch),
(cx, cy + ch))
intersections = [
intersection_of_vector_and_poly(canvas_corners, p1, p2, l_type)
for p1, p2 in pairwise(d_corners)
]
self._prev_rectangles = self._new_rectangles
self._new_rectangles = [(), (), (), ()]
if intersections != [None, None, None, None]:
self._new_rectangles = []
m = radius + 6 # margin for handle drop shadows
for intersection in intersections:
if not intersection:
self._new_rectangles.append(())
continue
(x0, y0), (x1, y1) = intersection
w = abs(x1 - x0) + 2 * m
h = abs(y1 - y0) + 2 * m
x = min(x0, x1) - m
y = min(y0, y1) - m
self._new_rectangles.append(Rect(x, y, w, h))
if redraw:
self.redraw()
class FrameOverlay(Overlay):
"""Overlay showing the frame, and edit boxes if in FrameEditMode
This is a display-space overlay, since the edit boxes need to be drawn with
pixel precision at a consistent weight regardless of zoom.
Only the main TDW is supported."""
OUTLINE_WIDTH = 1
# Which edges belong to which corner, CW from top left
_ZONE_EDGES = [sum(p) for p in pairwise(_SIDES)]
def __init__(self, doc):
"""Initialize overlay"""
Overlay.__init__(self)
self.doc = doc
self.app = doc.app
self._trash_icon_pixbuf = None
# Cached data used for painting and to minimize redraw areas
self._canvas_rect = None
self._canvas_rect_offset = None
self._display_corners = []
self._prev_display_corners = []
self._trash_btn_pos = None
# Stores per-edge invalidation rectangles,
# indexed canonically: top, right, bottom, left
self._prev_rectangles = [(), (), (), ()]
self._new_rectangles = [(), (), (), ()]
self._prev_disable_button_rectangle = None
self._disable_button_rectangle = None
# Calculate initial data - recalculate on frame changes
# and view changes.
self._recalculate_coordinates(True)
self.app.doc.model.frame_updated += self._frame_updated_cb
self.doc.tdw.transformation_updated += self._transformation_updated_cb
def _frame_updated_cb(self, *args):
self._recalculate_coordinates(True, *args)
def _transformation_updated_cb(self, *args):
# The redraw is already triggered at this point
self._recalculate_coordinates(False, *args)
def _recalculate_coordinates(self, redraw, *args):
"""Calculates geometric data that does not need updating every time"""
# Skip calculations when the frame is not enabled (this is important
# because otherwise all of this would be recalculated on moving,
# scaling and rotating the canvas.
if not (self.doc.model.frame_enabled or redraw):
return
tdw = self.doc.tdw
# Canvas rectangle - regular and offset
self._canvas_rect = Rect.new_from_gdk_rectangle(tdw.get_allocation())
self._canvas_rect_offset = self._canvas_rect.expanded(
self.OUTLINE_WIDTH * 4)
# Frame corners in model coordinates
x, y, w, h = tuple(self.doc.model.get_frame())
corners = [(x, y), (x + w, y), (x + w, y + h), (x, y + h)]
# Pixel-aligned frame corners in display space
d_corners = [tdw.model_to_display(mx, my) for mx, my in corners]
pxoffs = 0.5 if (self.OUTLINE_WIDTH % 2) else 0.0
self._prev_display_corners = self._display_corners
self._display_corners = tuple(
(int(x) + pxoffs, int(y) + pxoffs) for x, y in d_corners)
# Position of the button for disabling/deleting the frame
# Placed near the center of the frame, clamped to the viewport,
# with an offset so it does not cover visually small frames
# (when the frame _is_ small, or when zoomed out).
xs, ys = zip(*d_corners)
r = gui.style.FLOATING_BUTTON_RADIUS
tx, ty = self._canvas_rect.expanded(-2 * r).clamped_point(
sum(xs) / 4.0,
sum(ys) / 4.0)
self._trash_btn_pos = tx, ty
r += 6 # margin for drop shadows
self._prev_disable_button_rectangle = self._disable_button_rectangle
self._disable_button_rectangle = (tx - r, ty - r, r * 2, r * 2)
# Corners
self._zone_corners = []
radius = gui.style.DRAGGABLE_POINT_HANDLE_SIZE
canvas_limit = self._canvas_rect.expanded(radius)
for i, (cx, cy) in enumerate(d_corners):
if canvas_limit.contains_pixel(cx, cy):
self._zone_corners.append((cx, cy, self._ZONE_EDGES[i]))
# Intersecting frame lines & calculation of rectangles
l_type = LineType.SEGMENT
cx, cy, cw, ch = self._canvas_rect
canvas_corners = ((cx, cy), (cx + cw, cy), (cx + cw, cy + ch),
(cx, cy + ch))
intersections = [
intersection_of_vector_and_poly(canvas_corners, p1, p2, l_type)
for p1, p2 in pairwise(d_corners)
]
self._prev_rectangles = self._new_rectangles
self._new_rectangles = [(), (), (), ()]
if intersections != [None, None, None, None]:
self._new_rectangles = []
m = radius + 6 # margin for handle drop shadows
for intersection in intersections:
if not intersection:
self._new_rectangles.append(())
continue
(x0, y0), (x1, y1) = intersection
w = abs(x1 - x0) + 2 * m
h = abs(y1 - y0) + 2 * m
x = min(x0, x1) - m
y = min(y0, y1) - m
self._new_rectangles.append(Rect(x, y, w, h))
if redraw:
self.redraw()
def redraw(self, color_change=False):
tdw = self.doc.tdw
if color_change:
tdw.queue_draw()
else:
prev_trash = self._prev_disable_button_rectangle
new_trash = self._disable_button_rectangle
if prev_trash:
tdw.queue_draw_area(*prev_trash)
if new_trash:
tdw.queue_draw_area(*new_trash)
old_corners = tuple(pairwise(self._prev_display_corners))
new_corners = tuple(pairwise(self._display_corners))
prev = self._prev_rectangles
new = self._new_rectangles
for i, (r1, r2) in enumerate(zip(prev, new)):
if r1 == r2:
continue # Skip if unchanged
if r1 and r2:
r1.expand_to_include_rect(r2)
tdw.queue_draw_area(*r1)
elif r1 or r2:
r = r1 or r2
corners = new_corners if r == r1 else old_corners
if corners:
(cx0, cy0), (cx1, cy1) = corners[i]
r.expand_to_include_point(cx0, cy0)
r.expand_to_include_point(cx1, cy1)
tdw.queue_draw_area(*r)
else:
tdw.queue_draw()
return
def paint(self, cr):
"""Paints the frame, and the edit boxes if appropriate"""
if not self.doc.model.frame_enabled:
return
# Frame mask: outer closed rectangle just outside the viewport
cr.rectangle(*self._canvas_rect_offset)
# Frame mask: inner closed rectangle
p1, p2, p3, p4 = self._display_corners
cr.move_to(*p1)
cr.line_to(*p2)
cr.line_to(*p3)
cr.line_to(*p4)
cr.close_path()
# Fill the frame mask. We may need the shape again.
frame_rgba = self.app.preferences["frame.color_rgba"]
frame_rgba = [lib.helpers.clamp(c, 0, 1) for c in frame_rgba]
cr.set_source_rgba(*frame_rgba)
cr.set_fill_rule(cairo.FILL_RULE_EVEN_ODD)
cr.fill_preserve()
# If the doc controller is not in a frame-editing mode, no edit
# controls will be drawn. The frame mask drawn above normally
# has some alpha, and may be unclear as a result. To make it
# clearer, double-strike the edges.
editmode = None
for m in self.doc.modes:
if isinstance(m, FrameEditMode):
editmode = m
break
if not editmode:
cr.set_line_width(self.OUTLINE_WIDTH)
cr.stroke()
return
# Editable frame: shadows for the frame edge lines
cr.set_line_cap(cairo.LINE_CAP_ROUND)
zonelines = [
(_EditZone.TOP, p1, p2),
(_EditZone.RIGHT, p2, p3),
(_EditZone.BOTTOM, p3, p4),
(_EditZone.LEFT, p4, p1),
]
cr.set_line_width(gui.style.DRAGGABLE_EDGE_WIDTH)
for zone, p, q in zonelines:
cr.move_to(*p)
cr.line_to(*q)
gui.drawutils.render_drop_shadow(cr, z=1)
cr.new_path()
for zone, p, q in zonelines:
cr.move_to(*p)
cr.line_to(*q)
if editmode._zone and (editmode._zone == zone):
rgb = gui.style.ACTIVE_ITEM_COLOR.get_rgb()
else:
rgb = gui.style.EDITABLE_ITEM_COLOR.get_rgb()
cr.set_source_rgb(*rgb)
cr.stroke()
# Editable corners: drag handles (with hover)
for x, y, zonemask in self._zone_corners:
if editmode._zone and (editmode._zone == zonemask):
col = gui.style.ACTIVE_ITEM_COLOR
else:
col = gui.style.EDITABLE_ITEM_COLOR
gui.drawutils.render_round_floating_color_chip(
cr=cr,
x=x,
y=y,
color=col,
radius=gui.style.DRAGGABLE_POINT_HANDLE_SIZE,
)
# Frame remove button position, frame center, constrained to viewport
if editmode._zone == _EditZone.REMOVE_FRAME:
button_color = gui.style.ACTIVE_ITEM_COLOR
else:
button_color = gui.style.EDITABLE_ITEM_COLOR
bx, by = self._trash_btn_pos
gui.drawutils.render_round_floating_button(
cr=cr,
x=bx,
y=by,
color=button_color,
radius=gui.style.FLOATING_BUTTON_RADIUS,
pixbuf=self._trash_icon(),
)
editmode.remove_button_pos = (bx, by)
def _trash_icon(self):
"""Return trash icon, using cached instance if it exists"""
if not self._trash_icon_pixbuf:
self._trash_icon_pixbuf = gui.drawutils.load_symbolic_icon(
icon_name="mypaint-trash-symbolic",
size=gui.style.FLOATING_BUTTON_ICON_SIZE,
fg=(0, 0, 0, 1),
)
return self._trash_icon_pixbuf
