From e8c3a67b5a6c7b9e737071393d00ab0d6d09983d Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Wed, 21 Nov 2012 21:03:18 -0600
Subject: [PATCH] Use MIT SHM where possible to speed up drawing

---
 tdegtk/Makefile.am         |  2 +-
 tdegtk/tqtcairopainter.cpp | 33 +++++++++++++++++++++++++++++++++
 tdegtk/tqtcairopainter.h   |  3 +++
 3 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/tdegtk/Makefile.am b/tdegtk/Makefile.am
index 3f92391..c35b406 100644
--- a/tdegtk/Makefile.am
+++ b/tdegtk/Makefile.am
@@ -44,7 +44,7 @@ libtdegtk_la_SOURCES = $(source_h) $(source_c)
 libtdegtk_la_CFLAGS = $(TDEGTK_CFLAGS) $(CAIRO_CFLAGS) $(GTK3_CFLAGS)
 libtdegtk_la_CXXFLAGS = $(TDEGTK_CXXFLAGS) $(TDEGTK_CFLAGS) $(CAIRO_CFLAGS) $(GTK3_CFLAGS)
 
-libtdegtk_la_LIBADD = $(TDEGTK_LIBADD) libtqtcairo.la $(all_libraries) $(CAIRO_LIBS) $(GTK3_LIBS) $(KDE_RPATH) $(LIB_QT) -lDCOP $(LIB_TDECORE)
+libtdegtk_la_LIBADD = $(TDEGTK_LIBADD) libtqtcairo.la $(all_libraries) $(CAIRO_LIBS) $(GTK3_LIBS) $(KDE_RPATH) $(LIB_QT) -lDCOP $(LIB_TDECORE) $(LIB_TDEUI)
 
 libtdegtk_la_LDFLAGS = $(TDEGTK_LDFLAGS) $(CAIRO_LIBS) $(GTK3_LIBS)
 
diff --git a/tdegtk/tqtcairopainter.cpp b/tdegtk/tqtcairopainter.cpp
index 4c64df8..d926541 100644
--- a/tdegtk/tqtcairopainter.cpp
+++ b/tdegtk/tqtcairopainter.cpp
@@ -18,6 +18,11 @@
 **
 **********************************************************************/
 
+// If USE_TDE_SPECIFIC_LIBRARIES is set, the painter will use certain TDE libraries
+// to increase painting performance.  If this dependency is not desired and you can
+// live with the corresponding performance loss, comment out the following line:
+#define USE_TDE_SPECIFIC_LIBRARIES 1
+
 #include "tqtcairopainter.h"
 
 #define TQT_NO_COMPAT_NAMES
@@ -28,6 +33,10 @@
 #include "tqfile.h"
 #include "tqpaintdevicemetrics.h"
 
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+#include <kpixmapio.h>
+#endif // USE_TDE_SPECIFIC_LIBRARIES
+
 #undef Qt
 
 #define CAIRO_PEN_PIXEL_OFFSET (0.5)
@@ -661,7 +670,11 @@ void TQt3CairoPaintDevice::updateBrush(bool backgroundStroke, cairo_fill_rule_t
 			else {
 				TQPixmap *pm;
 				pm = m_brush.pixmap();
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+				brushImage = tdePixmapIO->convertToImage(*pm);
+#else // USE_TDE_SPECIFIC_LIBRARIES
 				brushImage = pm->convertToImage();
+#endif
 			}
 	
 			cairo_surface_t* brushSurface = TQImageToCairoSurface(brushImage);
@@ -1228,6 +1241,11 @@ TQt3CairoPaintDevice::~TQt3CairoPaintDevice()
 	if (m_intermediateSurface) {
 		cairo_surface_destroy(m_intermediateSurface);
 	}
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+	if (tdePixmapIO) {
+		delete tdePixmapIO;
+	}
+#endif // USE_TDE_SPECIFIC_LIBRARIES
 }
 
 /*!
@@ -1247,6 +1265,12 @@ void TQt3CairoPaintDevice::init() {
 	m_tabStopArray = NULL;
 
 	m_transferNeeded = false;
+
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+	tdePixmapIO = new KPixmapIO();
+#else // USE_TDE_SPECIFIC_LIBRARIES
+	tdePixmapIO = NULL;
+#endif // USE_TDE_SPECIFIC_LIBRARIES
 }
 
 void TQt3CairoPaintDevice::updateSurfaceDimensions() const {
@@ -1534,10 +1558,19 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 					TQPixmap mergedPixmap = TQPixmap(bitmap->width(), bitmap->height());
 					mergedPixmap.fill(m_pen.color());
 					mergedPixmap.setMask(*bitmap);
+					
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+					sourceImage = tdePixmapIO->convertToImage(mergedPixmap);
+#else // USE_TDE_SPECIFIC_LIBRARIES
 					sourceImage = mergedPixmap.convertToImage();
+#endif
 				}
 				else {
+#ifdef USE_TDE_SPECIFIC_LIBRARIES
+					sourceImage = tdePixmapIO->convertToImage(*p[1].pixmap);
+#else // USE_TDE_SPECIFIC_LIBRARIES
 					sourceImage = p[1].pixmap->convertToImage();
+#endif
 				}
 				cairo_surface_t* sourceSurface = TQImageToCairoSurface(sourceImage);
 				cairo_rectangle(FASTEST_AVAILABLE_PAINTER, p[0].rect->x(), p[0].rect->y(), p[0].rect->width(), p[0].rect->height());
diff --git a/tdegtk/tqtcairopainter.h b/tdegtk/tqtcairopainter.h
index 5e7dc55..dcca6f9 100644
--- a/tdegtk/tqtcairopainter.h
+++ b/tdegtk/tqtcairopainter.h
@@ -37,6 +37,8 @@
 
 typedef TQPtrStack<TQWMatrix> TQWMatrixStack;
 
+class KPixmapIO;
+
 class Q_EXPORT TQt3CairoPaintDevice : public TQPaintDevice		// picture class
 {
 	public:
@@ -107,6 +109,7 @@ class Q_EXPORT TQt3CairoPaintDevice : public TQPaintDevice		// picture class
 		bool m_tabStopArrayValid;
 
 		bool m_transferNeeded;
+		KPixmapIO* tdePixmapIO;
 };
 
 #endif // TQTCAIROPAINTER_H