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Improved mapview behaviour and rendering

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This commit is contained in:
Mark Qvist 2023-10-24 01:11:50 +02:00
parent 1aa2131d17
commit bbcb4409e6
1 changed files with 89 additions and 21 deletions
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110
sbapp/mapview/view.py
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@ -397,7 +397,10 @@ class MapView(Widget):
_zoom = NumericProperty(0)
_pause = BooleanProperty(False)
_scale = 1.0
_allow_snap = False
_disabled_count = 0
high_res = True
high_res_mode = 1
__events__ = ["on_map_relocated"]
@ -670,13 +673,14 @@ class MapView(Widget):
pass
def animated_diff_scale_at(self, d, x, y):
self._scale_target_time = 1.0
self._scale_target_pos = x, y
if self._scale_target_anim is False:
self._scale_target_anim = True
self._scale_target = d
else:
self._scale_target += d
# print(f"Scale = {self._scale} Target begin = {self._scale_target}")
Clock.unschedule(self._animate_scale)
Clock.schedule_interval(self._animate_scale, 1 / 60.0)
@ -687,19 +691,22 @@ class MapView(Widget):
self._scale_target = 0
else:
self._scale_target -= diff
self._scale_target_time -= dt
self.diff_scale_at(diff, *self._scale_target_pos)
final = self._scale_target == 0
self.diff_scale_at(diff, *self._scale_target_pos, final = final)
# print(f"Scale = {self._scale} Target now = {self._scale_target} Diff = {diff}")
ret = self._scale_target != 0
if not ret:
self._pause = False
return ret
def diff_scale_at(self, d, x, y):
def diff_scale_at(self, d, x, y, final = False):
scatter = self._scatter
scale = scatter.scale * (2 ** d)
self.scale_at(scale, x, y)
self.scale_at(scale, x, y, final = final)
def scale_at(self, scale, x, y):
def scale_at(self, scale, x, y, final = False):
snap_digits = 1
scatter = self._scatter
scale = clamp(scale, scatter.scale_min, scatter.scale_max)
rescale = scale * 1.0 / scatter.scale
@ -708,18 +715,52 @@ class MapView(Widget):
post_multiply=True,
anchor=scatter.to_local(x, y),
)
# Create a final transform to always land on well-
# defined scaling factors
if final and self._allow_snap:
int_diff = abs(self._scale-1.0)
diff = self._scale-1.0
if int_diff < 0.08:
target = scatter.scale-diff
factor = target/scatter.scale
scatter.apply_transform(
Matrix().scale(factor, factor, factor),
post_multiply=True,
anchor=scatter.to_local(x, y),
)
print(f"Snapped scale. Self = {self._scale} Scale = {scale}")
else:
pass
# print(f"Self = {self._scale} Scale = {scale} Rescale = {rescale} Zoom = {self.zoom}")
def on_touch_down(self, touch):
if not self.collide_point(*touch.pos):
return
if self.pause_on_action:
self._pause = True
# if "button" in touch.profile:
# print(f"Scale = {self._scale} Scatter = {self._scatter.scale}")
if "button" in touch.profile and touch.button in ("scrolldown", "scrollup"):
d = 1 if touch.button == "scrolldown" else -1
self._allow_snap = False
if self.snap_to_zoom:
d = 1 if touch.button == "scrolldown" else -1
else:
d = 0.1 if touch.button == "scrolldown" else -0.1
self.animated_diff_scale_at(d, *touch.pos)
return True
elif touch.is_double_tap and self.double_tap_zoom:
self.animated_diff_scale_at(1, *touch.pos)
self._allow_snap = True
if self._scale < 1.0:
dz = (1/self._scale)-1
else:
next_scale = 2.0
dz = (next_scale/self._scale)-1.0
# print(f"Diff zoom {self._scale} factor = {dz}")
self.animated_diff_scale_at(dz, *touch.pos)
return True
touch.grab(self)
self._touch_count += 1
@ -733,13 +774,13 @@ class MapView(Widget):
self._touch_count -= 1
if self._touch_count == 0:
# animate to the closest zoom
zoom, scale = self._touch_zoom
cur_zoom = self.zoom
cur_scale = self._scale
if cur_zoom < zoom or round(cur_scale, 2) < scale:
self.animated_diff_scale_at(1.0 - cur_scale, *touch.pos)
elif cur_zoom > zoom or round(cur_scale, 2) > scale:
self.animated_diff_scale_at(2.0 - cur_scale, *touch.pos)
# zoom, scale = self._touch_zoom
# cur_zoom = self.zoom
# cur_scale = self._scale
# if cur_zoom < zoom or round(cur_scale, 2) < scale:
# self.animated_diff_scale_at(1.0 - cur_scale, *touch.pos)
# elif cur_zoom > zoom or round(cur_scale, 2) > scale:
# self.animated_diff_scale_at(2.0 - cur_scale, *touch.pos)
self._pause = False
return True
return super(MapView, self).on_touch_up(touch)
@ -754,12 +795,39 @@ class MapView(Widget):
zoom = self._zoom
scatter = self._scatter
scale = scatter.scale
if round(scale, 2) >= 2.0:
zoom += 1
scale /= 2.0
elif round(scale, 2) < 1.0:
zoom -= 1
scale *= 2.0
if self.high_res:
if self.high_res_mode == 2:
# Double resolution mode
if round(scale, 2) >= 1.0:
zoom += 1
scale /= 2.0
elif round(scale, 2) < 0.5:
zoom -= 1
scale *= 2.0
elif self.high_res_mode == 1:
# Improved resolution mode
if round(scale, 2) >= 1.2:
zoom += 1
scale /= 2.0
elif round(scale, 2) < 0.6:
zoom -= 1
scale *= 2.0
else:
# if round(scale, 2) >= 2.0:
# zoom += 1
# scale /= 2.0
# elif round(scale, 2) < 1.0:
# zoom -= 1
# scale *= 2.0
if round(scale, 2) >= 1.75:
zoom += 1
scale /= 2.0
elif round(scale, 2) < 0.875:
zoom -= 1
scale *= 2.0
zoom = clamp(zoom, map_source.min_zoom, map_source.max_zoom)
if zoom != self._zoom:
self.set_zoom_at(zoom, scatter.x, scatter.y, scale=scale)