259 lines
8.9 KiB
Python
259 lines
8.9 KiB
Python
import cairo
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import math
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from .structures import Size, Position, Rectangle
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from ..events.events import WindowEventSource
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class Surface(object):
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def __init__(self, size=None, context=None):
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self.size = Size.from_value(size)
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if context is None:
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self.csurface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.size.width, self.size.height)
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self.context = cairo.Context(self.csurface)
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else:
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self.context = context
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self.root_window = Window('root', Position(0,0), self.size, self.context)
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self.root_window.add_child(Window('child', Position(0,0), [500,200], self.context, draggable=True))
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self.windows = [self.root_window]
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def setTopZero(self, context):
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context.identity_matrix()
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matrix = cairo.Matrix(1, 0, 0,
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1, 0, 0)
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context.transform(matrix)
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def inject_mouse_position(self, pos):
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self.root_window.inject_mouse_position(pos)
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def inject_mouse_down(self, button):
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self.root_window.inject_mouse_down(button)
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def draw(self):
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#self.setTopZero(ctx)
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self.context.identity_matrix()
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self.context.set_operator(cairo.OPERATOR_CLEAR)
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self.context.rectangle(0.0, 0.0, self.size.width, self.size.height)
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self.context.fill()
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self.context.set_operator(cairo.OPERATOR_OVER)
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for window in self.windows:
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window.draw()
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class WindowSurface(object):
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def __init__(self):
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super(WindowSurface, self).__init__()
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#self.mouse_pos
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def draw_circle(self, position, size, color=(1,1,1), outline_width=1.0, outline_color=(0,0,0), start_angle=0.0, end_angle=360.0):
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context = self.context
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position = Position.from_value(position)
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size = Size.from_value(size)
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width = size.width
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height = size.height
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x,y = (self.position.x+position.x+width/2,
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self.position.y+position.y+height/2)
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context.set_line_width(outline_width)
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context.save()
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context.translate(x, y)
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context.scale(width/2.0-outline_width/2.0, height/2.0-outline_width/2.0)
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context.arc(0, 0, 1, start_angle, end_angle * math.pi/180.0)
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context.restore()
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context.set_source_rgba(*color)
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context.fill_preserve()
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context.set_source_rgba(*outline_color)
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context.stroke()
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def draw_rounded_rect(self, position, size, color=(1,1,1), outline_width=1, outline_color=(0,0,0), corner_radius=10):
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position = Position.from_value(position)
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size = Size.from_value(size)
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context = self.context
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radius = corner_radius
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degrees = math.pi / 180.0
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x = position.x + self.position.x
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y = position.y + self.position.y
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width = size.width
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height = size.height
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context.new_sub_path()
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context.arc(x + width - radius - outline_width/2.0, y + radius + outline_width/2.0, radius, -90 * degrees, 0 * degrees)
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context.arc(x + width - radius - outline_width/2.0, y + height - radius - outline_width/2.0, radius, 0 * degrees, 90 * degrees)
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context.arc(x + radius + outline_width/2.0, y + height - radius - outline_width/2.0, radius, 90 * degrees, 180 * degrees)
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context.arc(x + radius + outline_width/2.0, y + radius + outline_width/2.0, radius, 180 * degrees, 270 * degrees)
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context.close_path()
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context.set_source_rgb(*color)
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context.fill_preserve()
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context.set_source_rgba(*outline_color)
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context.set_line_width(outline_width)
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context.stroke()
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def render(self):
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self.draw_rounded_rect([0,0], [self.size.width, self.size.height], outline_width=self.size.width/70)
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def draw(self):
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if self.visible:
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self.context.save()
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self.process_inputs()
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self.render()
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for child in self.children:
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child.draw()
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self.context.restore()
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class Window(WindowEventSource, WindowSurface):
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def __init__(self, name, position=None, size=None, context=None, draggable=False):
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super(Window, self).__init__()
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self.context = context
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self.name = name
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self.rectangle = Rectangle(position, size)
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self.children = []
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self.parent = None
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self.mouse_pos = Position(-1, -1)
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self.mouse_diff = Position(0, 0)
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self.mouse_in = False
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self.mouse_hover = False
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self.mouse_down = False
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self.old_mouse_down = False
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self.mouse_inputs = dict.fromkeys(self.mouse_button_down_events, False)
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self.focused = False
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self.visible = True
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self.draggable = draggable
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if self.draggable:
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self.accept('mouse-left-drag', self.drag)
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self.accept('mouse-left', self.click)
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self.accept('mouse-left-up', self.click_up)
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def drag(self, obj, mouse_pos):
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obj.position = mouse_pos - self.mouse_diff
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def click(self, obj, mouse_pos):
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self.mouse_diff = mouse_pos - self.position
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def click_up(self, obj, mouse_pos):
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self.mouse_diff = Position(0, 0)
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def show(self):
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self.visible = True
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def hide(self):
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self.visible = False
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def inject_mouse_down(self, button):
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if self.mouse_inside():
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print button, self.name
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self.mouse_inputs[button] = True
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self.mouse_down = True
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self.grab_focus()
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self.dispatch(button, self, self.mouse_pos)
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else:
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self.release_focus()
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for child in self.children:
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child.inject_mouse_down(button)
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def inject_mouse_up(self, button):
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if self.mouse_inside() and self.mouse_inputs[button]:
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print button+'-up', self.name
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self.mouse_down = False
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self.mouse_inputs[button] = False
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self.dispatch('{}-up'.format(button), self, self.mouse_pos)
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for child in self.children:
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child.inject_mouse_up(button)
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def inject_mouse_position(self, pos):
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mouse_pos = Position.from_value(pos)
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diff = mouse_pos - self.mouse_pos
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if diff != Position(0,0):
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self.dispatch('mouse-move', self, self.mouse_pos, mouse_pos)
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if self.focused and self.mouse_down:
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for button, down in self.mouse_inputs.items():
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if down:
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self.dispatch('{}-drag'.format(button), self, self.mouse_pos)
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self.mouse_pos = mouse_pos
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for child in self.children:
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child.inject_mouse_position(pos)
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def grab_focus(self):
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self.focused = True
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def release_focus(self):
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if self.focused:
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print 'released', self.name
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self.focused = False
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self.mouse_down = False
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#clear events that may have been triggered
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#eg. User clicks on one window, holds, and
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#then releases on another
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for key in self.mouse_inputs:
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self.mouse_inputs[key] = False
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def mouse_inside(self):
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res = self.rectangle.intersects_with(self.mouse_pos)
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for child in self.children:
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res &= not child.mouse_inside()
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return res
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def mouse_held(self):
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res = self.mouse_down
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for child in self.children:
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res |= child.mouse_down
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return res
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def process_inputs(self):
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mouse_focus = self.mouse_inside()
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if not self.mouse_held():
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if mouse_focus:
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if not self.mouse_in:
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print 'mouse-enter', self.name
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self.dispatch('mouse-enter', self)
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self.mouse_in = True
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else:
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if self.mouse_in:
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print 'mouse-leave', self.name
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self.dispatch('mouse-leave', self)
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self.mouse_in = False
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def add_child(self, child_window):
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if child_window not in self.children:
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child_window.parent = self
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child_window.position = child_window.position + self.position
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self.children.append(child_window)
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def remove_child(self, child_window):
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try:
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self.children.remove(child_window)
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child_window.parent = None
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except ValueError:
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pass
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@property
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def position(self):
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return self.rectangle.position
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@position.setter
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def position(self, position):
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diff = position - self.rectangle.position
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if diff.x != 0 or diff.y != 0:
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self.dispatch('move', self, position)
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for child in self.children:
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child.position = child.position + diff
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self.rectangle.position = position
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@property
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def size(self):
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return self.rectangle.size
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@size.setter
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def size(self, size):
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diff = size - self.rectangle.size
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if diff.height != 0 or diff.width != 0:
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self.dispatch('resize', self, size)
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for child in self.children:
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child.size = child.size + diff
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self.rectangle.size = size
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