X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/8607541e1bf8913140a3960206e07a3240cc421a..7f8d4d2a7d36008888785e61481ccd41fe489f12:/lib/python/Components/ScrollLabel.py

diff --git a/lib/python/Components/ScrollLabel.py b/lib/python/Components/ScrollLabel.py
new file mode 100644
index 00000000..4a5caf6a
--- /dev/null
+++ b/lib/python/Components/ScrollLabel.py
@@ -0,0 +1,85 @@
+import skin
+from HTMLComponent import *
+from GUIComponent import *
+from enigma import eLabel, eWidget, eSlider, fontRenderClass, ePoint, eSize
+
+class ScrollLabel(HTMLComponent, GUIComponent):
+	def __init__(self, text=""):
+		self.message = text
+		self.instance = None
+		self.long_text = None
+		self.scrollbar = None
+		self.pages = None
+		self.total = None
+
+	def applySkin(self, desktop):
+		skin.applyAllAttributes(self.long_text, desktop, self.skinAttributes)
+		s = self.long_text.size()
+		self.instance.move(self.long_text.position())
+		self.scrollbar.move(ePoint(s.width()-20,0))
+		self.scrollbar.resize(eSize(20,s.height()))
+		self.scrollbar.setOrientation(eSlider.orVertical);
+		self.scrollbar.setRange(0,100)
+		lineheight=fontRenderClass.getInstance().getLineHeight( self.long_text.getFont() )
+		lines = (int)(s.height() / lineheight)
+		self.pageHeight = (int)(lines * lineheight)
+		self.instance.resize(eSize(s.width(), self.pageHeight+(int)(lineheight/6)))
+		self.long_text.move(ePoint(0,0))
+		self.long_text.resize(eSize(s.width()-30, self.pageHeight*16))
+		self.setText(self.message)
+
+	def setText(self, text):
+		self.message = text
+		if self.long_text is not None:
+			self.long_text.move(ePoint(0,0))
+			self.long_text.setText(self.message)
+			text_height=self.long_text.calculateSize().height()
+			total=self.pageHeight
+			pages=1
+			while total < text_height:
+				total=total+self.pageHeight
+				pages=pages+1
+			if pages > 1:
+				self.scrollbar.show()
+				self.total = total
+				self.pages = pages
+				self.updateScrollbar()
+			else:
+				self.scrollbar.hide()
+				self.total = None
+				self.pages = None
+
+	def updateScrollbar(self):
+		start = -self.long_text.position().y() * 100 / self.total
+		vis = self.pageHeight * 100 / self.total;
+		self.scrollbar.setStartEnd(start, start+vis)
+
+	def getText(self):
+		return self.message
+
+	def GUIcreate(self, parent):
+		self.instance = eWidget(parent)
+		self.scrollbar = eSlider(self.instance)
+		self.long_text = eLabel(self.instance)
+
+	def GUIdelete(self):
+		self.long_text = None
+		self.scrollbar = None
+		self.instance = None
+
+	def pageUp(self):
+		if self.total is not None:
+			curPos = self.long_text.position()
+			if curPos.y() < 0:
+				self.long_text.move( ePoint( curPos.x(), curPos.y() + self.pageHeight ) )
+				self.updateScrollbar()
+
+	def pageDown(self):
+		if self.total is not None:
+			curPos = self.long_text.position()
+			if self.total-self.pageHeight >= abs( curPos.y() - self.pageHeight ):
+				self.long_text.move( ePoint( curPos.x(), curPos.y() - self.pageHeight ) )
+				self.updateScrollbar()
+
+	def produceHTML(self):
+		return self.getText()