Python graphics.Color方法代码示例

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def create_drawings(self):
        from kivy.graphics import Line, RenderContext

        # very first time, create a texture for the shader
        if not hasattr(SmoothLinePlot, '_texture'):
            tex = Texture.create(size=(1, 64), colorfmt='rgb')
            tex.add_reload_observer(SmoothLinePlot._smooth_reload_observer)
            SmoothLinePlot._texture = tex
            SmoothLinePlot._smooth_reload_observer(tex)

        self._grc = RenderContext(
            fs=SmoothLinePlot.SMOOTH_FS,
            use_parent_modelview=True,
            use_parent_projection=True)
        with self._grc:
            self._gcolor = Color(*self.color)
            self._gline = Line(
                points=[], cap='none', width=2.,
                texture=SmoothLinePlot._texture)

        return [self._grc] 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def draw_annulars(self):
        # draw annulars that are in the annulars list:
        # requires properties annular_thickness, and a list of dicts {color: , start: , stop: }, ...,
        # where start and stop are the values of the scale to start and stop the annular

        if len(self.annulars) == 0:
            return

        awidth = self.annular_thickness
        self.annular_canvas = InstructionGroup()

        if self.semi_circle:
            self.annular_canvas.add(PushMatrix())
            self.annular_canvas.add(Translate(0, -self.dial_diameter / 2 + self.hub_radius))

        for a in self.annulars:
            self.annular_canvas.add(Color(*a.get('color', [0, 1, 0, 1])))
            st = self.value_to_angle(a.get('start', self.scale_min))
            en = self.value_to_angle(a.get('stop', self.scale_max))
            self.annular_canvas.add(Line(ellipse=(self.pos[0] + awidth, self.pos[1] + awidth, self.dial_diameter - awidth * 2, self.dial_diameter - awidth * 2, st + awidth / 2.0 - self.tic_width, en + awidth / 2.0), width=awidth, cap='none', joint='round'))

        if self.semi_circle:
            self.annular_canvas.add(PopMatrix())

        self.canvas.before.add(self.annular_canvas) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def draw_setpoint(self, *args):
        # draw a setpoint
        if self.setpoint_canvas:
            self.canvas.after.remove(self.setpoint_canvas)
            self.setpoint_canvas = None

        if math.isnan(self.setpoint_value) or math.isinf(self.setpoint_value):
            return

        v = self.value_to_angle(self.setpoint_value)
        length = self.dial_diameter / 2.0 - self.tic_length if not self.setpoint_length else self.setpoint_length
        self.setpoint_canvas = InstructionGroup()

        self.setpoint_canvas.add(PushMatrix())
        self.setpoint_canvas.add(Color(*self.setpoint_color))
        self.setpoint_canvas.add(Rotate(angle=v, axis=(0, 0, -1), origin=self.dial_center))
        self.setpoint_canvas.add(Translate(self.dial_center[0], self.dial_center[1]))
        self.setpoint_canvas.add(Line(points=[0, 0, 0, length], width=self.setpoint_thickness, cap='none'))
        # self.setpoint_canvas.add(SmoothLine(points=[0, 0, 0, length], width=self.setpoint_thickness))
        self.setpoint_canvas.add(PopMatrix())

        self.canvas.after.add(self.setpoint_canvas) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def draw_rubberband(self, event, x0, y0, x1, y1):
        w = abs(x1 - x0)
        h = abs(y1 - y0)
        rect = [int(val)for val in (min(x0, x1) + self.canvas.x, min(y0, y1)
                        + self.canvas.y, w, h)]
        if self.lastrect is None:
            self.canvas.canvas.add(Color(*self.rubberband_color))
        else:
            self.canvas.canvas.remove(self.lastrect)
        self.lastrect = InstructionGroup()
        self.lastrect.add(Line(rectangle=rect, width=1.0, dash_length=5.0,
                dash_offset=5.0))
        self.lastrect.add(Color(1.0, 0.0, 0.0, 0.2))
        self.lastrect.add(Rectangle(pos=(rect[0], rect[1]),
                                    size=(rect[2], rect[3])))
        self.canvas.canvas.add(self.lastrect) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def start(win, ctx):
    # late import to avoid breaking module loading
    from kivy.input.postproc import kivy_postproc_modules
    kivy_postproc_modules['fps'] = StatsInput()
    global _ctx
    ctx.label = Label(text='FPS: 0.0')
    ctx.inputstats = 0
    ctx.stats = []
    ctx.statsr = []
    with win.canvas.after:
        ctx.color = Color(1, 0, 0, .5)
        ctx.rectangle = Rectangle(pos=(0, win.height - 25),
                                  size=(win.width, 25))
        ctx.color = Color(1, 1, 1)
        ctx.rectangle = Rectangle(pos=(5, win.height - 20))
        ctx.color = Color(1, 1, 1, .5)
        for x in range(64):
            ctx.stats.append(0)
            ctx.statsr.append(
                Rectangle(pos=(win.width - 64 * 4 + x * 4, win.height - 25),
                          size=(4, 0)))
    Clock.schedule_interval(partial(update_fps, ctx), .5)
    Clock.schedule_interval(partial(update_stats, ctx), 1 / 60.) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def _touch_down(win, touch):
    ud = touch.ud
    touch.scale_for_screen(win.width, win.height)
    with win.canvas.after:
        ud['tr.color'] = Color(1, 1, 1, pointer_alpha)
        iw, ih = pointer_image.size
        ud['tr.rect'] = Rectangle(
            pos=(
                touch.x - (pointer_image.width / 2. * pointer_scale),
                touch.y - (pointer_image.height / 2. * pointer_scale)),
            size=(iw * pointer_scale, ih * pointer_scale),
            texture=pointer_image.texture)

    if not ud.get('tr.grab', False):
        ud['tr.grab'] = True
        touch.grab(win) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def _mouse_move(win, pos, *args):
    global cursor_size
    if hasattr(win, '_cursor'):
        c = win._cursor
    else:
        with win.canvas.after:
            img = Image(cursor_image)
            Color(1, 1, 1, 1, mode='rgba')
            size = (
                cursor_size[0] or img.texture.size[0],
                cursor_size[1] or img.texture.size[1]
            )
            print(size)
            win._cursor = c = Rectangle(texture=img.texture,
                                        size=size)

    c.pos = pos[0] + cursor_offset[0], pos[1] - c.size[1] + cursor_offset[1] 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def init_gesture(self, touch):
        '''Create a new gesture from touch, ie it's the first on
        surface, or was not close enough to any existing gesture (yet)'''
        col = self.color
        if self.use_random_color is True:
            col = hsv_to_rgb(random(), 1., 1.)

        g = GestureContainer(touch, max_strokes=self.max_strokes,
                             line_width=self.line_width, color=col)

        # Create the bounding box Rectangle for the gesture
        if self.draw_bbox:
            bb = g.bbox
            with self.canvas:
                Color(col[0], col[1], col[2], self.bbox_alpha, mode='rgba',
                      group=g.id)

                g._bbrect = Rectangle(
                    group=g.id,
                    pos=(bb['minx'], bb['miny']),
                    size=(bb['maxx'] - bb['minx'],
                          bb['maxy'] - bb['miny']))

        self._gestures.append(g)
        return g 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def init_stroke(self, g, touch):
        l = [touch.x, touch.y]
        col = g.color

        new_line = Line(
            points=l,
            width=self.line_width,
            group=g.id)
        g._strokes[str(touch.uid)] = new_line

        if self.line_width:
            canvas_add = self.canvas.add
            canvas_add(Color(col[0], col[1], col[2], mode='rgb', group=g.id))
            canvas_add(new_line)

        # Update the bbox in case; this will normally be done in on_touch_move,
        # but we want to update it also for a single press, force that here:
        g.update_bbox(touch)
        if self.draw_bbox:
            self._update_canvas_bbox(g)

        # Register the stroke in GestureContainer so we can look it up later
        g.add_stroke(touch, new_line) 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def update_graphics(self, win, create=False):
        global Color, Ellipse
        de = self.ud.get('_drawelement', None)
        if de is None and create:
            if Color is None:
                from kivy.graphics import Color, Ellipse
            with win.canvas.after:
                de = (
                    Color(.8, .2, .2, .7),
                    Ellipse(size=(20, 20), segments=15))
            self.ud._drawelement = de
        if de is not None:
            self.push()
            self.scale_for_screen(
                win.system_size[0],
                win.system_size[1],
                rotation=win.rotation)
            de[1].pos = self.x - 10, self.y - 10
            self.pop() 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def create_drawings(self):
        from kivy.graphics import Line, RenderContext
        from kivy.graphics.texture import Texture

        # very first time, create a texture for the shader
        if not hasattr(SmoothLinePlot, '_texture'):
            tex = Texture.create(size=(1, 64), colorfmt='rgb')
            tex.add_reload_observer(SmoothLinePlot._smooth_reload_observer)
            SmoothLinePlot._texture = tex
            SmoothLinePlot._smooth_reload_observer(tex)

        self._grc = RenderContext(fs=SmoothLinePlot.SMOOTH_FS,
                use_parent_modelview=True,
                use_parent_projection=True)
        with self._grc:
            self._gcolor = Color(*self.color)
            self._gline = Line(points=[], cap='none', width=2.,
                    texture=SmoothLinePlot._texture)

        return [self._grc] 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def on_touch_move( self, touch ) :
        if self._touched :
            self._d = touch.pos
            self._hover_size, self._hover_pos = self._get_hover()

            if self.root_layout :
                self._clear_canvas()

                with self.root_layout.canvas :
                    kg.Color( *self.hover_color, **self._unique_group )
                    kg.Rectangle( 
                        size=self._hover_size, \
                        pos=self._hover_pos, \
                        **self._unique_group 
                    )
            return True 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def __init__(self, **kwargs):
        super(Graph, self).__init__(**kwargs)

        with self.canvas:
            self._fbo = Fbo(size=self.size, with_stencilbuffer=self._with_stencilbuffer)

        with self._fbo:
            self._background_color = Color(*self.background_color)
            self._background_rect = Rectangle(size=self.size)
            self._mesh_ticks_color = Color(*self.tick_color)
            self._mesh_ticks = Mesh(mode='lines')
            self._mesh_rect_color = Color(*self.border_color)
            self._mesh_rect = Mesh(mode='line_strip')

        with self.canvas:
            Color(1, 1, 1)
            self._fbo_rect = Rectangle(size=self.size, texture=self._fbo.texture)

        mesh = self._mesh_rect
        mesh.vertices = [0] * (5 * 4)
        mesh.indices = range(5)

        self._plot_area = StencilView()
        self.add_widget(self._plot_area)

        t = self._trigger = Clock.create_trigger(self._redraw_all)
        ts = self._trigger_size = Clock.create_trigger(self._redraw_size)
        tc = self._trigger_color = Clock.create_trigger(self._update_colors)

        self.bind(center=ts, padding=ts, precision=ts, plots=ts, x_grid=ts,
                  y_grid=ts, draw_border=ts)
        self.bind(xmin=t, xmax=t, xlog=t, x_ticks_major=t, x_ticks_minor=t,
                  xlabel=t, x_grid_label=t, ymin=t, ymax=t, ylog=t,
                  y_ticks_major=t, y_ticks_minor=t, ylabel=t, y_grid_label=t,
                  font_size=t, label_options=t, x_ticks_angle=t)
        self.bind(tick_color=tc, background_color=tc, border_color=tc)
        self._trigger() 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def start_cursor(self, x, y):
        tx, ty = self.transform_to_wpos(x, y)
        label = CoreLabel(text="{:1.2f},{:1.2f}".format(tx, ty))
        label.refresh()
        texture = label.texture
        px, py = (x, y)
        with self.ids.surface.canvas.after:
            Color(0, 0, 1, mode='rgb', group='cursor_group')
            self.crossx = [
                Rectangle(pos=(px, 0), size=(1, self.height), group='cursor_group'),
                Rectangle(pos=(0, py), size=(self.width, 1), group='cursor_group'),
                Line(circle=(px, py, 20), group='cursor_group'),
                Rectangle(texture=texture, pos=(px - texture.size[0] / 2, py - 40), size=texture.size, group='cursor_group')
            ] 

# 需要导入模块: from kivy import graphics [as 别名]
# 或者: from kivy.graphics import Color [as 别名]
def get_graphics(self, gc, polygons, points_line, rgbFace, closed=False):
        '''Return an instruction group which contains the necessary graphics
           instructions to draw the respective graphics.
        '''
        instruction_group = InstructionGroup()
        if isinstance(gc.line['dash_list'], tuple):
            gc.line['dash_list'] = list(gc.line['dash_list'])
        if rgbFace is not None:
            if len(polygons.meshes) != 0:
                instruction_group.add(Color(*rgbFace))
                for vertices, indices in polygons.meshes:
                    instruction_group.add(Mesh(
                        vertices=vertices,
                        indices=indices,
                        mode=str("triangle_fan")
                    ))
        instruction_group.add(Color(*gc.get_rgb()))
        if _mpl_ge_1_5 and (not _mpl_ge_2_0) and closed:
            points_poly_line = points_line[:-2]
        else:
            points_poly_line = points_line
        if gc.line['width'] > 0:
            instruction_group.add(Line(points=points_poly_line,
                width=int(gc.line['width'] / 2),
                dash_length=gc.line['dash_length'],
                dash_offset=gc.line['dash_offset'],
                dash_joint=gc.line['join_style'],
                dash_list=gc.line['dash_list']))
        return instruction_group