X-Git-Url: https://git.cweiske.de/enigma2.git/blobdiff_plain/ba02fb4aced5868d047a5bffbd2ed87583daee4d..cd621fe499141885e5a0d8b4e42a0f8a7f41a9ac:/lib/gui/ewidgetdesktop.cpp

diff --git a/lib/gui/ewidgetdesktop.cpp b/lib/gui/ewidgetdesktop.cpp
index ff913680..1b5cf9b2 100644
--- a/lib/gui/ewidgetdesktop.cpp
+++ b/lib/gui/ewidgetdesktop.cpp
@@ -1,5 +1,6 @@
 #include <lib/gui/ewidgetdesktop.h>
 #include <lib/gui/ewidget.h>
+#include <lib/base/ebase.h>
 
 void eWidgetDesktop::addRootWidget(eWidget *root, int top)
 {
@@ -41,24 +42,46 @@ void eWidgetDesktop::calcWidgetClipRegion(eWidget *widget, gRegion &parent_visib
 
 void eWidgetDesktop::recalcClipRegions()
 {
-	gRegion screen = gRegion(eRect(ePoint(0, 0), m_screen_size));
+	m_background_region = gRegion(eRect(ePoint(0, 0), m_screen_size));
 	
 	for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
-		calcWidgetClipRegion(*i, screen);
-//	dumpRegion(screen);
+		calcWidgetClipRegion(*i, m_background_region);
 }
 
 void eWidgetDesktop::invalidate(const gRegion &region)
 {
+	if (m_timer && m_dirty_region.empty())
+		m_timer->start(0, 1); // start singleshot redraw timer
 	m_dirty_region |= region;
 }
 
+void eWidgetDesktop::setBackgroundColor(gColor col)
+{
+	m_background_color = col;
+	
+		/* if there's something visible from the background, redraw it with the new color. */
+	if (m_dc && m_background_region.valid() && !m_background_region.empty())
+	{
+			/* todo: split out "setBackgroundColor / clear"... maybe? */
+		gPainter painter(m_dc);
+		painter.resetClip(m_background_region);
+		painter.setBackgroundColor(m_background_color);
+		painter.clear();
+	}
+}
+
 void eWidgetDesktop::paint()
 {
 	gPainter painter(m_dc);
 		/* walk all root windows. */
 	for (ePtrList<eWidget>::iterator i(m_root.begin()); i != m_root.end(); ++i)
 		i->doPaint(painter, m_dirty_region);
+	m_dirty_region &= m_background_region;
+	
+	painter.resetClip(m_dirty_region);
+	painter.setBackgroundColor(m_background_color);
+	painter.clear();
+	
 	m_dirty_region = gRegion();
 }
 
@@ -67,7 +90,23 @@ void eWidgetDesktop::setDC(gDC *dc)
 	m_dc = dc;
 }
 
-eWidgetDesktop::eWidgetDesktop(eSize size): m_screen_size(size)
+void eWidgetDesktop::setRedrawTask(eMainloop &ml)
+{
+	if (m_mainloop)
+	{
+		delete m_timer;
+		m_timer = 0;
+		m_mainloop = 0;
+	}
+	m_mainloop = &ml;
+	m_timer = new eTimer(m_mainloop);
+	CONNECT(m_timer->timeout, eWidgetDesktop::paint);
+	
+	if (!m_dirty_region.empty())
+		m_timer->start(0, 1);
+}
+
+eWidgetDesktop::eWidgetDesktop(eSize size): m_screen_size(size), m_mainloop(0), m_timer(0)
 {
 }