Added initial drawing code plus a test app.

jgui/surface/surface.py

@@ -0,0 +1,91 @@
+import cairo
+import math
+from .structures import Size, Position, Rectangle
+from ..events.events import WindowEventSource
+
+class Surface(object):
+    def __init__(self, size=None):
+        self.size = Size.from_value(size)
+        self.csurface = cairo.ImageSurface(cairo.FORMAT_ARGB32, self.size.width, self.size.height)
+        self.root_window = Window('root', Position(0,0), self.size)
+        self.windows = [self.root_window]
+
+    def draw(self):
+        for window in self.windows:
+            window.draw(self.csurface)
+
+surface = None
+def init(size):
+    surface = Surface(size)
+
+class WindowSurface(object):
+    def __init__(self):
+        super(WindowSurface, self).__init__()
+        #self.mouse_pos
+
+    def draw(self, surface):
+        Width = self.size.width
+        Height = self.size.height
+        x,y, radius = (Width/2,Height/2, Width/2-Width/10)
+        ctx = cairo.Context(surface)
+        ctx.set_operator(cairo.OPERATOR_CLEAR)
+        ctx.rectangle(0.0, 0.0, Width, Height)
+        ctx.fill()
+
+        ctx.set_operator(cairo.OPERATOR_OVER)
+        ctx.set_line_width(Width/10)
+        ctx.arc(x, y, radius, 0, 2.0 * math.pi)
+        ctx.set_source_rgba(0.8, 0.8, 0.8)
+        ctx.fill_preserve()
+        ctx.set_source_rgba(1, 1, 1)
+        ctx.stroke()
+
+
+class Window(WindowEventSource, WindowSurface):
+    def __init__(self, name, position=None, size=None):
+        super(Window, self).__init__()
+        self.name = name
+        self.rectangle = Rectangle(position, size)
+        self.children = []
+        self.parent = None
+        self.mouse_pos = Position()
+
+
+    def add_child(self, child_window):
+        if child_window not in self.children:
+            child_window.parent = self
+            self.children.append(child_window)
+
+    def remove_child(self, child_window):
+        try:
+            self.children.remove(child_window)
+            child_window.parent = None
+        except ValueError:
+            pass
+
+    @property
+    def position(self):
+        return self.rectangle.position
+
+    @position.setter
+    def position(self, position):
+        diff = position - self.rectangle.position
+        if diff.x != 0 or diff.y != 0:
+            self.dispatch('move', self, position)
+            for child in self.children:
+                child.position = child.position + diff
+        self.recangle.position = position
+
+    @property
+    def size(self):
+        return self.rectangle.size
+
+    @size.setter
+    def size(self, size):
+        diff = size - self.rectangle.size
+        if diff.height != 0 or diff.width != 0:
+            self.dispatch('resize', self, size)
+            for child in self.children:
+                child.size = child.size + diff
+        self.rectangle.size = size
+