From c479beea7cc338380a38e29ae041c03b2c299ac1 Mon Sep 17 00:00:00 2001
From: Felix Domke <tmbinc@elitedvb.net>
Date: Thu, 19 Jul 2007 23:48:55 +0000
Subject: add 'canvas' gui element where you can draw into a pixmap from python

---
 lib/python/Components/Renderer/Canvas.py | 40 ++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 lib/python/Components/Renderer/Canvas.py

(limited to 'lib/python/Components/Renderer/Canvas.py')

diff --git a/lib/python/Components/Renderer/Canvas.py b/lib/python/Components/Renderer/Canvas.py
new file mode 100644
index 00000000..01b05fb0
--- /dev/null
+++ b/lib/python/Components/Renderer/Canvas.py
@@ -0,0 +1,40 @@
+from Renderer import Renderer
+
+from enigma import eCanvas, eRect, gRGB
+
+class Canvas(Renderer):
+	GUI_WIDGET = eCanvas
+
+	def __init__(self):
+		Renderer.__init__(self)
+		self.sequence = None
+		self.draw_count = 0
+
+	def pull_updates(self):
+		if self.instance is None:
+			return
+
+		# do an incremental update
+		list = self.source.drawlist
+		if list is None:
+			return
+
+		# if the lists sequence count changed, re-start from begin
+		if list[0] != self.sequence:
+			self.sequence = list[0]
+			self.draw_count = 0
+
+		self.draw(list[1][self.draw_count:])
+		self.draw_count = len(list[1])
+
+	def draw(self, list):
+		for l in list:
+			print "drawing ..", l
+			self.instance.fillRect(eRect(l[1], l[2], l[3], l[4]), gRGB(l[5]))
+
+	def changed(self, what):
+		self.pull_updates()
+
+	def postWidgetCreate(self, instance):
+		self.sequence = None
+		self.pull_updates()
-- 
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