def render_unsaved_exit(window):
"Popup to prevent exiting the application with unsaved work."
if window.exit_unsaved_drawings:
imgui.open_popup("Really exit?")
imgui.set_next_window_size(500, 200)
if imgui.begin_popup_modal("Really exit?")[0]:
imgui.text("You have unsaved work in these drawing(s):")
imgui.begin_child("unsaved",
border=True,
height=imgui.get_content_region_available()[1] - 26)
for drawing in window.exit_unsaved_drawings:
imgui.text(drawing.filename)
if imgui.is_item_hovered():
pass # TODO popup thumbnail of the picture?
imgui.end_child()
if imgui.button("Yes, exit anyway"):
imgui.close_current_popup()
pyglet.app.exit()
imgui.same_line()
if imgui.button("Yes, but save first"):
for drawing in window.exit_unsaved_drawings:
window.save_drawing(drawing)
pyglet.app.exit()
imgui.same_line()
if imgui.button("No, cancel"):
window.exit_unsaved_drawings = None
imgui.close_current_popup()
imgui.end_popup()
async def show_pleple_window(name, plot_info, multi_resolution_signals,
plot_gl_resources, plot_gl_canvas) -> IMGui[None]:
with window(name):
window_width, window_height = im.get_content_region_available()
window_width, window_height = int(window_width), int(window_height)
if (window_width, window_height) != (plot_gl_canvas.width_px,
plot_gl_canvas.height_px):
print("\t### resizing canvas {} -> {}".format(
(plot_gl_canvas.width_px, plot_gl_canvas.height_px),
(window_width, window_height)),
flush=True)
del plot_gl_canvas
plot_gl_canvas = aplt.init_plot_canvas(window_width, window_height)
await emit(___new_canvas_(plot_gl_canvas))
canvas_width = plot_gl_canvas.width_px
canvas_height = plot_gl_canvas.height_px
should_redraw = True
if should_redraw:
aplt.draw_plot_to_canvas_multires(
plot_gl_canvas,
plot_info,
multi_resolution_signals,
plot_gl_resources,
line_color=aplt.WHITE,
background_color=aplt.TRANSPARENT_BLACK)
im.image(plot_gl_canvas.texture_id,
canvas_width,
canvas_height,
uv0=(0, 1),
uv1=(1, 0))
async def signal_plot_window(
plot_box_state: PlotBoxState, m_inputs: List[Maybe[Signal]],
ui_settings: Dict[str, Any]) -> Eff[[ACTIONS], IMGui[None]]:
m_signal = m_inputs[0]
assert ((type(m_signal.val) == Signal)
if m_signal.is_Just() else True), repr(m_signal)
PLOT_WINDOW_FLAGS = 0 if ui_settings[
'plot_window_movable'] else im.WINDOW_NO_MOVE
plot_name = "Plot (id={id})###{id}".format(id=plot_box_state.id_)
with window(name=plot_name, flags=PLOT_WINDOW_FLAGS):
plot_width = -1. # auto
plot_height = im.get_content_region_available().y - 20
await signal_plot(plot_box_state,
m_signal,
width=plot_width,
height=plot_height,
ui_settings=ui_settings)
if m_signal.is_Nothing():
im.text(" ")
elif m_signal.is_Just():
signal = m_signal.val
im.text_colored(str(signal), 0.8, 0.8, 0.8)
return get_window_rect()
def render ( self ):
super().render()
if imgui.begin( "Music Editor" ):
( width, height ) = imgui.get_content_region_available();
( changed, value ) = imgui.input_text_multiline( "###Code", self.code, 1000, width = width, height = height / 2 )
if changed: self.code = value
to_parse = False
to_play = False
if imgui.button( "Parse" ):
to_parse = True
imgui.same_line()
if imgui.button( "Play" ):
to_play = True
try:
if to_parse or to_play:
self.player = Player()
self.player.sequencers.append( FluidSynthSequencer() )
parser = Parser();
self.parsedTree = parser.parse( self.code )
self.context = self.create_context( self.player )
value = self.parsedTree.eval( self.context )
self.player.events = events = list( value ) if isinstance( value, Music ) else []
self.parsedException = None
if to_play:
self.player.play()
except Exception as ex:
self.parsedException = ex
print(ex)
traceback.print_tb(ex.__traceback__)
if self.parsedException != None:
imgui.text_colored( str( self.parsedException ), 1, 0, 0 )
self.expressionTab = self.imgui_tabbar( self.expressionTab, [
( EXPRESSION_TAB_AST, "AST", self.render_inspector_ast ),
( EXPRESSION_TAB_EVENTS, "Events", self.render_inspector_events ),
( EXPRESSION_TAB_KEYBOARD, "Keyboard", self.render_inspector_keyboard )
] )
imgui.end()
def show(self, value, read_only):
clicked, self.show_texture = imgui.checkbox("Show", self.show_texture)
if not self.show_texture:
return
texture = value.value
if texture is None:
self.texture_aspect = None
else:
h, w, _ = texture.shape
self.texture_aspect = w / h
cursor_pos = imgui.get_cursor_screen_pos()
imgui.set_next_window_size(500, 500, imgui.ONCE)
imgui.set_next_window_size_constraints((0.0, 0.0),
(float("inf"), float("inf")),
self.window_size_callback)
imgui.set_next_window_position(*imgui.get_io().mouse_pos,
imgui.ONCE,
pivot_x=0.5,
pivot_y=0.5)
expanded, opened = imgui.begin(
"Texture of %s###%s%s" %
(self.node.spec.name, id(self.node), id(self)), True,
imgui.WINDOW_NO_SCROLLBAR)
if not opened:
self.show_texture = False
if expanded:
if texture is None:
imgui.text("No texture associated")
else:
# [::-1] reverses list
texture_size = texture.shape[:2][::-1]
texture_aspect = texture_size[0] / texture_size[1]
window_size = imgui.get_content_region_available()
imgui.image(texture._handle, window_size[0],
window_size[0] / texture_aspect)
if imgui.is_item_hovered() and imgui.is_mouse_clicked(1):
# little hack to have first context menu entry under cursor
io = imgui.get_io()
pos = io.mouse_pos
io.mouse_pos = pos[0] - 20, pos[1] - 20
imgui.open_popup("context")
io.mouse_pos = pos
if imgui.begin_popup("context"):
if imgui.menu_item("save")[0]:
util.image.save_screenshot(texture.get())
imgui.menu_item("texture handle: %s" % texture._handle,
None, False, False)
imgui.menu_item("texture dtype: %s" % str(texture.dtype),
None, False, False)
imgui.menu_item("texture shape: %s" % str(texture.shape),
None, False, False)
imgui.end_popup()
imgui.end()
def draw(self):
imgui.begin("Scope")
self.begin_input(self.input)
imgui.button('input')
self.end_input()
imgui.same_line(spacing=16)
imgui.plot_lines("Sin(t)",
np.array(self.values).astype(np.float32),
graph_size=imgui.get_content_region_available())
imgui.end()
def show_imgui_plot(
plot_box_state: PlotState,
signal: Signal,
width: int = -1,
height: int = -1,
ui_settings={},
) -> IMGui[None]:
debug_log_time(SIGNAL_PLOT_CALL_START)
time_range = plot_box_state.plot_state.time_range
if width == -1:
width = int(im.get_content_region_available().x)
if height == -1:
height = int(im.get_content_region_available().y)
debug_log_time(DATA_GET_START)
data_part = slice_signal(
signal,
time_range,
n_points_needed=width,
variant=ui_settings['plot_resample_function']).astype(
np.dtype('float32'))
debug_log_time(DATA_GET_END)
debug_log_time(WAVE_DRAW_START)
im.plot_lines(
"the_actual_plot##{}".format(plot_box_state.id_),
values=data_part,
graph_size=(width, height),
scale_min=signal.physical_min,
scale_max=signal.physical_max,
)
debug_log_time(WAVE_DRAW_END)
debug_log_time(SIGNAL_PLOT_CALL_END)
def render_map(self):
imgui.begin("map")
imgui.slider_float("x (m)",
self.track[self.i, 0] * ceiltrack.CEIL_HEIGHT, -80,
80)
imgui.slider_float("y (m)",
self.track[self.i, 1] * ceiltrack.CEIL_HEIGHT, -80,
80)
imgui.slider_float("theta", self.track[self.i, 2] % (np.pi * 2), -7, 7)
imgui.slider_float("x (grid)",
self.track[self.i, 0] / ceiltrack.X_GRID, -10, 10)
imgui.slider_float("y (grid)",
self.track[self.i, 1] / ceiltrack.X_GRID, -10, 10)
changed, self.ceilheight = imgui.slider_float("ceiling height (m)",
self.ceilheight, 2, 4)
if changed:
self.loadframe(self.i)
dl = imgui.get_window_draw_list()
pos = imgui.get_cursor_screen_pos()
siz = imgui.get_content_region_available()
if siz[1] == 0:
siz = [400, 300]
# just use a fixed size
w = siz[0]
imgui.image_button(self.floortex, w, w / 2, frame_padding=0)
# imgui.image_button(self.floortex, siz[0], siz[0])
origin = [pos[0], pos[1]]
scale = 50 * ceiltrack.CEIL_HEIGHT * w / 1000
trackcolor = imgui.get_color_u32_rgba(0.3, 0.5, 0.3, 1)
for i in range(1, self.i):
dl.add_line(origin[0] + scale * self.track[i - 1, 0],
origin[1] + scale * self.track[i - 1, 1],
origin[0] + scale * self.track[i, 0],
origin[1] + scale * self.track[i, 1], trackcolor, 1.5)
carcolor = imgui.get_color_u32_rgba(0, 1, 0.6, 1)
B = self.track[self.i]
dl.add_line(origin[0] + scale * B[0], origin[1] + scale * B[1],
origin[0] + scale * (B[0] + np.cos(B[2])),
origin[1] + scale * (B[1] - np.sin(B[2])), carcolor, 1.5)
imgui.end()
def render(self, play):
imgui.begin("sim")
dl = imgui.get_window_draw_list()
meterwidth = max(np.max(self.track[:, 0]), np.max(self.lm[:, 0]))
if play:
if imgui.button("pause"):
play = False
else:
if imgui.button("play"):
play = True
# sliders
_, xy = imgui.slider_float2("car xy", self.car.x, -self.car.y, 0,
meterwidth)
self.car.x, self.car.y = xy[0], -xy[1]
_, self.car.theta = imgui.slider_float("car theta", self.car.theta, 0,
2 * np.pi)
imgui.slider_float("car v", self.car.v, 0, 10)
imgui.slider_float2("controls", self.u, self.k, -1, 1)
_, self.lanewidth = imgui.slider_float("lane width", self.lanewidth,
0.1, 2.0)
# render overview
pos = imgui.get_cursor_screen_pos()
siz = imgui.get_content_region_available()
if siz[1] <= 0:
siz = [400, 400]
imgui.invisible_button("overview", siz[0], siz[1])
origin = pos
scale = siz[0] / (meterwidth * 1.1)
conecolor = imgui.get_color_u32_rgba(1, 0.7, 0, 1)
for lm in self.lm:
dl.add_rect_filled(origin[0] + lm[0] * scale - 2,
origin[1] - lm[1] * scale - 2,
origin[0] + lm[0] * scale + 2,
origin[1] - lm[1] * scale + 2, conecolor, 3)
trackcolor = imgui.get_color_u32_rgba(1, 1, 0.3, 0.5)
for i in range(0, len(self.track), 2):
j = (i + 1) % len(self.track)
ti = self.track[i] * scale
tj = self.track[j] * scale
dl.add_line(origin[0] + ti[0], origin[1] - ti[1],
origin[0] + tj[0], origin[1] - tj[1], trackcolor, 1.5)
for i in range(0, len(self.track)):
j = (i + 1) % len(self.track)
ti = self.track[i] * scale
tj = self.track[j] * scale
Li = ti[2:4] * self.lanewidth
Lj = tj[2:4] * self.lanewidth
dl.add_line(origin[0] + ti[0] + Li[0], origin[1] - ti[1] - Li[1],
origin[0] + tj[0] + Lj[0], origin[1] - tj[1] - Lj[1],
trackcolor, 3)
dl.add_line(origin[0] + ti[0] - Li[0], origin[1] - ti[1] + Li[1],
origin[0] + tj[0] - Lj[0], origin[1] - tj[1] + Lj[1],
trackcolor, 3)
mx = scale * self.car.x
my = scale * self.car.y
# draw forward projections
for traj in self.shots:
for i in range(len(traj) - 1):
dl.add_line(origin[0] + traj[i, 0] * scale,
origin[1] - traj[i, 1] * scale,
origin[0] + traj[i + 1, 0] * scale,
origin[1] - traj[i + 1, 1] * scale,
imgui.get_color_u32_rgba(0, 1, 1, 1), 1)
# draw car + velocity
vxy = scale * self.car.v * .1 * \
np.array([np.cos(self.car.theta), np.sin(self.car.theta)])
dl.add_line(origin[0] + mx, origin[1] - my, origin[0] + mx + vxy[0],
origin[1] - my - vxy[1],
imgui.get_color_u32_rgba(0, 1, 0, 1), 1)
imgui.end()
return play
def render_graphs(self):
imgui.begin("graphs")
i = self.i
dl = imgui.get_window_draw_list()
mi = max(0, i - 30 * 3)
temp = self.controlstate[mi:i + 1, 3].copy()
imgui.plot_lines("velocity", temp)
temp = self.controlstate[mi:i + 1, 8].copy()
imgui.plot_lines("target v", temp)
temp = self.controls[mi:i + 1, 0].copy()
imgui.plot_lines("control v", temp)
temp = self.controls[mi:i + 1, 1].copy()
imgui.plot_lines("control steer", temp)
temp = self.controlstate[mi:i + 1, 9].copy()
imgui.plot_lines("target w", temp)
temp = self.controlstate[mi:i + 1, 4].copy()
imgui.plot_lines("yaw rate", temp)
# live variables
maxv = int(np.ceil(np.max(self.controlstate[:, 3]) * 1.1))
imgui.slider_float("wheel v", self.controlstate[i, 3], 0, maxv)
imgui.slider_float("target v", self.controlstate[i, 8], 0, maxv)
lv = 0
if i > 0:
dx = self.controlstate[i, 0] - self.controlstate[i - 1, 0]
dy = self.controlstate[i, 1] - self.controlstate[i - 1, 1]
lv = np.sqrt(dx**2 + dy**2) * 30.0
imgui.slider_float("localized v", lv, 0, maxv)
imgui.slider_float("control motor", self.controls[i, 0] / 127., -1, 1)
imgui.slider_float("control steer", self.controls[i, 1] / 127., -1, 1)
# for yaw rate and curvature, set the limits backwards
# so that turning right is to the right
maxw = int(np.ceil(np.max(np.abs(self.controlstate[:, 4])) * 1.1))
imgui.slider_float("yaw rate", self.controlstate[i, 4], maxw, -maxw)
imgui.slider_float("target w", self.controlstate[i, 9], maxw, -maxw)
v = self.controlstate[i, 3]
if v > 0.5:
k = self.controlstate[i, 4] / v
else:
k = 0
imgui.slider_float("curvature", k, 2, -2)
targetK = self.controlstate[self.i, 7]
imgui.slider_float("target k", targetK, 2, -2)
# render overview
pos = imgui.get_cursor_screen_pos()
siz = imgui.get_content_region_available()
if siz[1] == 0:
siz = [400, 300]
imgui.invisible_button("overview", siz[0], siz[0] * 0.7)
origin = pos
meterwidth = max(np.max(self.track[:, 0]), np.max(self.lm[:, 0]))
scale = siz[0] / (meterwidth * 1.1)
conecolor = imgui.get_color_u32_rgba(1, 0.7, 0, 1)
for lm in self.lm:
dl.add_rect_filled(origin[0] + lm[0] * scale - 2,
origin[1] - lm[1] * scale - 2,
origin[0] + lm[0] * scale + 2,
origin[1] - lm[1] * scale + 2, conecolor, 3)
trackcolor = imgui.get_color_u32_rgba(1, 1, 0.3, 0.5)
for i in range(0, len(self.track), 2):
j = (i + 1) % len(self.track)
ti = self.track[i] * scale
tj = self.track[j] * scale
dl.add_line(origin[0] + ti[0], origin[1] - ti[1],
origin[0] + tj[0], origin[1] - tj[1], trackcolor, 1.5)
particlecolor = imgui.get_color_u32_rgba(1, 1, 1, 0.3)
dl.add_rect(pos[0], pos[1], pos[0] + siz[0], pos[1] + siz[1],
particlecolor, 1)
if 'particles' in self.frame:
ps = self.frame['particles']
for p in ps:
dl.add_rect_filled(origin[0] + p[0] * scale,
origin[1] - p[1] * scale,
origin[0] + p[0] * scale + 1,
origin[1] - p[1] * scale + 1, particlecolor)
# also draw a mean velocity vector
mxy = scale * np.mean(ps[:, :2], axis=0)
vxy = scale * v * .1 * np.array(
[np.mean(np.cos(ps[:, 3])),
np.mean(np.sin(ps[:, 3]))])
dl.add_line(origin[0] + mxy[0], origin[1] - mxy[1],
origin[0] + mxy[0] + vxy[0],
origin[1] - mxy[1] - vxy[1],
imgui.get_color_u32_rgba(0, 1, 0, 1), 1)
else:
x = self.controlstate[self.i, 0]
y = self.controlstate[self.i, 1]
theta = self.controlstate[self.i, 2]
imgui.slider_float("x", x, 0, 20)
imgui.slider_float("y", y, -10, 0)
imgui.slider_float("theta", theta % (2 * np.pi), -np.pi, np.pi)
v = 0.3 * self.controlstate[self.i, 3]
S, C = np.sin(theta), np.cos(theta)
dl.add_rect_filled(origin[0] + x * scale - 3,
origin[1] - y * scale - 3,
origin[0] + scale * x + 3,
origin[1] - scale * y + 3,
imgui.get_color_u32_rgba(0, 1, 0, 1), 1)
dl.add_line(origin[0] + x * scale, origin[1] - y * scale,
origin[0] + scale * (x + v * C),
origin[1] - scale * (y + v * S),
imgui.get_color_u32_rgba(0, 1, 0, 1), 1)
targetaccel = self.controlstate[self.i][12:14] / 9.8
accel = self.carstate[self.i][2]
ox, oy = origin[0] + scale * 3, origin[1] + scale * 9
for i in range(100):
t0 = i * 2 * np.pi / 100
t1 = (i + 1) * 2 * np.pi / 100
dl.add_line(ox + 2 * scale * np.cos(t0),
oy - 2 * scale * np.sin(t0),
ox + 2 * scale * np.cos(t1),
oy - 2 * scale * np.sin(t1),
imgui.get_color_u32_rgba(0.7, 0.7, 0.7, 1), 1)
dl.add_line(ox + scale * np.cos(t0), oy - scale * np.sin(t0),
ox + scale * np.cos(t1), oy - scale * np.sin(t1),
imgui.get_color_u32_rgba(0.7, 0.7, 0.7, 1), 1)
dl.add_line(ox, oy, ox + scale * accel[1], oy - scale * accel[0],
imgui.get_color_u32_rgba(0.3, 1, 0.5, 1), 3)
dl.add_rect(ox - scale * targetaccel[1] - 2,
oy + scale * targetaccel[0] - 2,
ox - scale * targetaccel[1] + 2,
oy + scale * targetaccel[0] + 2,
imgui.get_color_u32_rgba(0.0, 1, 1, 1), 1)
imgui.end()
def pan_zoom(name,
state,
width=None,
height=None,
content_gen=None,
drag_tag=None,
down_tag=None,
hover_tag=None):
""" Create the Pan & Zoom widget, serving as a container for a thing given by `content_gen`.
This widget is mostly not used directly. Instead, a special-purpose wrapper can be used,
such as `concur.extra_widgets.image.image`, or `concur.extra_widgets.frame.frame`.
Args:
name: widget name. Also serves as an event identifier
state: `PanZoom` object representing state.
width: widget width in pixels. If `None`, it fills the available space.
height: widget height in pixels. If `None`, it fills the available space.
content_gen: Widget generator to display inside the pan-zoom widget. All events are passed
through as a return tuple member. This is a function that returns a Concur widget, and
takes two keyword arguments:
* **tf**: `concur.extra_widgets.pan_zoom.TF` object with transformation information
* **event_gen**: This is an event generator which returns the drag, down, and hover events when they occur.
It is up to the widget to do the necessary transformations
using the `TF` object, and optionally react to the events created by `event_gen`.
drag_tag: The event tag for LMB drag events. If `None`, no drag events are fired.
down_tag: The event tag for LMB down events. If `None`, no down events are fired.
Useful in combination with `drag_tag` to indicate when the dragging started.
hover_tag: The event tag for mouse hover when no mouse buttons are down.
If `None`, no hover events are fired. Events are fired only when the mouse is moving.
Returns:
To ease integration with other widgets, this widget returns events in a special format, `(name, state, event)`.
`state` or `event` may be `None` in case `state` didn't change, or there is no `event`.
If `drag_tag`, or `down_tag` arguments are used, these are fired in the `event` member of the return tuple.
"""
assert content_gen is not None
tf, content = None, None
event_queue = queue.Queue()
while True:
assert not state.keep_aspect or not state.fix_axis, \
"Can't fix axis and keep_aspect at the same time."
# Dynamically rescale width and height if they weren't specified
if width is None:
w = imgui.get_content_region_available()[0]
else:
w = width
if height is None:
h = imgui.get_content_region_available()[1]
else:
h = height
frame_w = max(1, w - state.margins[0] + state.margins[2])
frame_h = max(1, h - state.margins[1] + state.margins[3])
w = max(1, w)
h = max(1, h)
zoom_x = frame_w / (state.right - state.left)
zoom_y = frame_h / (state.bottom - state.top)
left, right = state.left, state.right
top, bottom = state.top, state.bottom
if state.keep_aspect:
aspect = float(state.keep_aspect)
assert state.keep_aspect > 0, "Negative aspect ratio is not supported."
if abs(zoom_x) > abs(zoom_y) * aspect:
zoom_x = np.sign(zoom_x) * abs(zoom_y) * aspect
center_x = (left + right) / 2
left = center_x - frame_w / zoom_x / 2
right = center_x + frame_w / zoom_x / 2
if abs(zoom_y) > abs(zoom_x) / aspect:
zoom_y = np.sign(zoom_y) * abs(zoom_x) / aspect
center_y = (top + bottom) / 2
top = center_y - frame_h / zoom_y / 2
bottom = center_y + frame_h / zoom_y / 2
origin = imgui.get_cursor_screen_pos()
# needs to be before is_window_hovered
imgui.begin_child("Pan-zoom",
w,
h,
False,
flags=imgui.WINDOW_NO_SCROLLBAR
| imgui.WINDOW_NO_SCROLL_WITH_MOUSE)
# Interaction
st = copy.deepcopy(state)
io = imgui.get_io()
is_window_hovered = imgui.is_window_hovered()
if (imgui.is_mouse_clicked(1)
or imgui.is_mouse_clicked(2)) and is_window_hovered:
st.is_rmb_dragged = True
if not (io.mouse_down[1] or io.mouse_down[2]):
st.is_rmb_dragged = False
delta = io.mouse_delta
# Pan
if st.is_rmb_dragged and (delta[0] or delta[1]):
if st.fix_axis != 'x':
st.left -= delta[0] / zoom_x
st.right -= delta[0] / zoom_x
if st.fix_axis != 'y':
st.top -= delta[1] / zoom_y
st.bottom -= delta[1] / zoom_y
# Zoom
if (imgui.is_window_hovered() or st.is_rmb_dragged) and io.mouse_wheel:
factor = 1.3**io.mouse_wheel
if st.fix_axis != 'x':
mx_rel = (io.mouse_pos[0] - origin[0] -
state.margins[0]) / frame_w * 2 - 1
mx = mx_rel * (right - left) / (st.right - st.left) / 2 + 0.5
wi = st.right - st.left
st.left = st.left + wi * mx - wi / factor * mx
st.right = st.right - wi * (1 - mx) + wi / factor * (1 - mx)
if st.fix_axis != 'y':
my_rel = (io.mouse_pos[1] - origin[1] -
state.margins[1]) / frame_h * 2 - 1
my = my_rel * (bottom - top) / (st.bottom - st.top) / 2 + 0.5
hi = st.bottom - st.top
st.top = st.top + hi * my - hi / factor * my
st.bottom = st.bottom - hi * (1 - my) + hi / factor * (1 - my)
# Get screen-space bounds disregarding the margins
left_s = left - st.margins[0] / zoom_x
top_s = top - st.margins[1] / zoom_y
right_s = right - st.margins[2] / zoom_x
bottom_s = bottom - st.margins[3] / zoom_y
s2c = np.array([ # Screen to Content
[1 / zoom_x, 0, left_s - origin[0] / zoom_x],
[0, 1 / zoom_y, top_s - origin[1] / zoom_y]
])
c2s = np.array([ # Content to Screen
[zoom_x, 0, origin[0] - left_s * zoom_x],
[0, zoom_y, origin[1] - top_s * zoom_y]
])
view_s = [origin[0], origin[1], origin[0] + w, origin[1] + h]
view_c = [left_s, top_s, right_s, bottom_s]
content_value = None
content_returned = False
new_tf = TF(c2s, s2c, view_c, view_s)
if down_tag \
and not st.is_rmb_dragged \
and imgui.is_mouse_clicked() \
and is_window_hovered:
event_queue.put(
(down_tag, new_tf.inv_transform(np.array([[*io.mouse_pos]
]))[0]))
if hover_tag \
and not st.is_rmb_dragged \
and not any(imgui.is_mouse_down(i) for i in [0,1,2]) \
and is_window_hovered:
new_tf.hovered = True
if (delta[0] or delta[1]):
event_queue.put(
(hover_tag,
new_tf.inv_transform(np.array([[*io.mouse_pos]]))[0]))
if drag_tag \
and not st.is_rmb_dragged:
imgui.invisible_button("", w, h)
dx, dy = io.mouse_delta
if imgui.is_item_active() and (dx or dy):
event_queue.put(
(drag_tag,
np.array([new_tf.s2c[0, 0] * dx, new_tf.s2c[1, 1] * dy])))
imgui.set_item_allow_overlap()
try:
from concur.core import lift
if tf is None or tf != new_tf:
tf = new_tf
w, h = tf.view_s[2] - tf.view_s[0], tf.view_s[3] - tf.view_s[1]
content = content_gen(tf=tf,
event_gen=lambda: listen(event_queue))
next(content)
except StopIteration as e:
content_value = e.value
content_returned = True
finally:
imgui.end_child()
changed = st != state
if changed or content_returned:
return name, (st if changed else None, content_value)
yield
