From 1c242c0a654a5c4048ba4219a0982f8ba8a85246 Mon Sep 17 00:00:00 2001
From: Felix Domke <tmbinc@elitedvb.net>
Date: Thu, 13 Dec 2007 00:16:09 +0000
Subject: [PATCH 1/1] re-enable alphablend

---
 lib/gdi/gpixmap.cpp | 17 ++++++++---------
 lib/gdi/grc.h       |  3 ++-
 lib/gui/epixmap.cpp | 19 ++++++++++++++-----
 lib/gui/epixmap.h   |  4 ++--
 4 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/lib/gdi/gpixmap.cpp b/lib/gdi/gpixmap.cpp
index d0eff03f..855cb8b2 100644
--- a/lib/gdi/gpixmap.cpp
+++ b/lib/gdi/gpixmap.cpp
@@ -220,17 +220,16 @@ void gPixmap::blit(const gPixmap &src, ePoint pos, const gRegion &clip, int flag
 
 		eRect srcarea=area;
 		srcarea.moveBy(-pos.x(), -pos.y());
-		
+
 		if ((surface->data_phys && src.surface->data_phys) && (gAccel::getInstance()))
 			if (!gAccel::getInstance()->blit(surface, src.surface, area.topLeft(), srcarea, flag))
 				continue;
-		flag &= ~ blitAlphaBlend;
-		
+
 		if ((surface->bpp == 8) && (src.surface->bpp==8))
 		{
 			__u8 *srcptr=(__u8*)src.surface->data;
 			__u8 *dstptr=(__u8*)surface->data;
-	
+
 			srcptr+=srcarea.left()*src.surface->bypp+srcarea.top()*src.surface->stride;
 			dstptr+=area.left()*surface->bypp+area.top()*surface->stride;
 			for (int y=0; y<area.height(); y++)
@@ -260,7 +259,7 @@ void gPixmap::blit(const gPixmap &src, ePoint pos, const gRegion &clip, int flag
 		{
 			__u32 *srcptr=(__u32*)src.surface->data;
 			__u32 *dstptr=(__u32*)surface->data;
-	
+
 			srcptr+=srcarea.left()+srcarea.top()*src.surface->stride/4;
 			dstptr+=area.left()+area.top()*surface->stride/4;
 			for (int y=0; y<area.height(); y++)
@@ -283,7 +282,7 @@ void gPixmap::blit(const gPixmap &src, ePoint pos, const gRegion &clip, int flag
 				} else if (flag & blitAlphaBlend)
 				{
 					// uh oh. this is only until hardware accel is working.
-					
+
 					int width=area.width();
 							// ARGB color space!
 					unsigned char *src=(unsigned char*)srcptr;
@@ -301,12 +300,12 @@ void gPixmap::blit(const gPixmap &src, ePoint pos, const gRegion &clip, int flag
 						unsigned char dr = dst[2];
 						unsigned char dg = dst[1];
 						unsigned char db = dst[0];
-						
+
 						dst[3] = BLEND(0xFF, da, sa);
 						dst[2] = BLEND(sr, dr, sa);
 						dst[1] = BLEND(sg, dg, sa);
 						dst[0] = BLEND(sb, db, sa);
-						
+
 						src += 4; dst += 4;
 					}
 				} else
@@ -328,7 +327,7 @@ void gPixmap::blit(const gPixmap &src, ePoint pos, const gRegion &clip, int flag
 					pal[i]=0x010101*i;
 				pal[i]^=0xFF000000;
 			}
-	
+
 			srcptr+=srcarea.left()*src.surface->bypp+srcarea.top()*src.surface->stride;
 			dstptr+=area.left()*surface->bypp+area.top()*surface->stride;
 			for (int y=0; y<area.height(); y++)
diff --git a/lib/gdi/grc.h b/lib/gdi/grc.h
index 84f8ad6c..478ca46c 100644
--- a/lib/gdi/grc.h
+++ b/lib/gdi/grc.h
@@ -230,7 +230,8 @@ public:
 
 	enum
 	{
-		BT_ALPHATEST = 1
+		BT_ALPHATEST = 1,
+		BT_ALPHABLEND = 2
 	};
 
 	void blit(gPixmap *pixmap, ePoint pos, const eRect &what=eRect(), int flags=0);
diff --git a/lib/gui/epixmap.cpp b/lib/gui/epixmap.cpp
index 69da944c..84fec323 100644
--- a/lib/gui/epixmap.cpp
+++ b/lib/gui/epixmap.cpp
@@ -7,7 +7,7 @@ ePixmap::ePixmap(eWidget *parent)
 {
 }
 
-void ePixmap::setAlphatest(bool alphatest)
+void ePixmap::setAlphatest(int alphatest)
 {
 	m_alphatest = alphatest;
 	setTransparent(alphatest);
@@ -62,14 +62,23 @@ int ePixmap::event(int event, void *data, void *data2)
 		getStyle(style);
 
 //	we don't clear the background before because of performance reasons.
-//	when the pixmap is too small to fix the whole widget area, the widget is
+//	when the pixmap is too small to fit the whole widget area, the widget is
 //	transparent anyway, so the background is already painted.
 //		eWidget::event(event, data, data2); 
-		
+
 		gPainter &painter = *(gPainter*)data2;
 		if (m_pixmap)
-			painter.blit(m_pixmap, ePoint(0, 0), eRect(), m_alphatest?gPainter::BT_ALPHATEST:0);
-		
+		{
+			int flags = 0;
+			if (m_alphatest == 0)
+				flags = 0;
+			else if (m_alphatest == 1)
+				flags = gPainter::BT_ALPHATEST;
+			else if (m_alphatest == 2)
+				flags = gPainter::BT_ALPHABLEND;
+			painter.blit(m_pixmap, ePoint(0, 0), eRect(), flags);
+		}
+
 		return 0;
 	}
 	case evtChangedPixmap:
diff --git a/lib/gui/epixmap.h b/lib/gui/epixmap.h
index 1be68097..1c4a97c8 100644
--- a/lib/gui/epixmap.h
+++ b/lib/gui/epixmap.h
@@ -5,14 +5,14 @@
 
 class ePixmap: public eWidget
 {
-	bool m_alphatest;
+	int m_alphatest;
 public:
 	ePixmap(eWidget *parent);
 
 	void setPixmap(gPixmap *pixmap);
 	void setPixmap(ePtr<gPixmap> &pixmap);
 	void setPixmapFromFile(const char *filename);
-	void setAlphatest(bool alphatest);
+	void setAlphatest(int alphatest); /* 1 for alphatest, 2 for alphablend */
 protected:
 	ePtr<gPixmap> m_pixmap;
 	int event(int event, void *data=0, void *data2=0);
-- 
2.30.2