From 4038374c679a63f95c57ef21dc11e7cd7207c2ec Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Mon, 17 Sep 2012 16:05:48 -0500
Subject: Add tab stop controls

---
 tdegtk/tqtcairopainter.cpp | 70 ++++++++++++++++++++++++++++++++++------------
 tdegtk/tqtcairopainter.h   |  6 +++-
 2 files changed, 57 insertions(+), 19 deletions(-)

(limited to 'tdegtk')

diff --git a/tdegtk/tqtcairopainter.cpp b/tdegtk/tqtcairopainter.cpp
index 0e8da20..95c86c4 100644
--- a/tdegtk/tqtcairopainter.cpp
+++ b/tdegtk/tqtcairopainter.cpp
@@ -676,6 +676,7 @@ void TQt3CairoPaintDevice::pangoSetupTextPath(PangoLayout *layout, const char* t
 #endif
 
 	pango_layout_set_font_description(layout, desc);
+	pango_font_description_free(desc);
 
 	PangoAttrList* attr_list = pango_attr_list_new();
 	pango_attr_list_insert(attr_list, pango_attr_underline_new((underline)?PANGO_UNDERLINE_SINGLE:PANGO_UNDERLINE_NONE));
@@ -683,7 +684,15 @@ void TQt3CairoPaintDevice::pangoSetupTextPath(PangoLayout *layout, const char* t
 	pango_layout_set_attributes(layout, attr_list);
 	pango_attr_list_unref(attr_list);
 
-	pango_font_description_free(desc);
+	if (m_tabStopArrayValid) {
+		pango_layout_set_tabs(layout, m_tabStopArray);
+	}
+	else if (m_tabStopsValid) {
+		pango_layout_set_tabs(layout, m_tabStops);
+	}
+	else {
+		pango_layout_set_tabs(layout, NULL);
+	}
 }
 
 void TQt3CairoPaintDevice::drawText(TQPainter *p, int x, int y, const TQString &str) {
@@ -844,10 +853,13 @@ void TQt3CairoPaintDevice::setCairoTransformations() {
 */
 
 TQt3CairoPaintDevice::TQt3CairoPaintDevice( cairo_surface_t *cairosurface )
-    : TQPaintDevice( TQInternal::Picture | TQInternal::ExternalDevice ), m_intermediateSurface(NULL), m_painter(NULL), m_devicePainter(NULL)
+    : TQPaintDevice( TQInternal::Picture | TQInternal::ExternalDevice ), m_intermediateSurface(NULL), m_painter(NULL), m_devicePainter(NULL), m_tabStops(NULL), m_tabStopArray(NULL)
 {
 	m_surface = cairosurface;
 	m_worldMatrixStack.setAutoDelete(TRUE);
+
+	m_tabStops = pango_tab_array_new(0, false);
+	m_tabStopArray = pango_tab_array_new(0, false);
 }
 
 /*!
@@ -855,6 +867,13 @@ TQt3CairoPaintDevice::TQt3CairoPaintDevice( cairo_surface_t *cairosurface )
 */
 TQt3CairoPaintDevice::~TQt3CairoPaintDevice()
 {
+	if (m_tabStops) {
+		pango_tab_array_free(m_tabStops);
+	}
+	if (m_tabStopArray) {
+		pango_tab_array_free(m_tabStopArray);
+	}
+
 	if (m_painter) {
 		cairo_destroy(m_painter);
 		m_painter = NULL;
@@ -1176,6 +1195,8 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 			m_clipRegion = TQImage();
 			m_clipRegionEnabled = false;
 			m_worldMatrixStack.clear();
+			m_tabStopsValid = false;
+			m_tabStopArrayValid = false;
 		}
 		break;
 	    case PdcEnd:
@@ -1302,27 +1323,40 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 			}
 		}
 		break;
-#if 0
 	    case PdcSetTabStops:
-		s >> i_16;
-		painter->setTabStops( i_16 );
+		if (p) {
+			int tabspacing = p[0].ival;
+			if (tabspacing > 0) {
+				// Set up a repeating tab stop pattern
+				pango_tab_array_resize(m_tabStops, 2);
+				pango_tab_array_set_tab(m_tabStops, 0, PANGO_TAB_LEFT, (tabspacing*1)*PANGO_SCALE);
+				pango_tab_array_set_tab(m_tabStops, 1, PANGO_TAB_LEFT, (tabspacing*2)*PANGO_SCALE);
+				m_tabStopsValid = true;
+			}
+			else {
+				pango_tab_array_resize(m_tabStops, 0);
+				m_tabStopsValid = false;
+			}
+		}
 		break;
 	    case PdcSetTabArray:
-		s >> i_16;
-		if ( i_16 == 0 ) {
-		    painter->setTabArray( 0 );
-		} else {
-		    int *ta = new int[i_16];
-		    TQ_CHECK_PTR( ta );
-		    for ( int i=0; i<i_16; i++ ) {
-			s >> i1_16;
-			ta[i] = i1_16;
-		    }
-		    painter->setTabArray( ta );
-		    delete [] ta;
+		if (p) {
+			int tabcount = p[0].ival;
+			if (tabcount > 0) {
+				int* tabarray = p[1].ivec;
+				pango_tab_array_resize(m_tabStopArray, tabcount);
+				int i;
+				for (i=0;i<tabcount;i++) {
+					pango_tab_array_set_tab(m_tabStopArray, i, PANGO_TAB_LEFT, tabarray[i]*PANGO_SCALE);
+				}
+				m_tabStopArrayValid = true;
+			}
+			else {
+				pango_tab_array_resize(m_tabStopArray, 0);
+				m_tabStopArrayValid = false;
+			}
 		}
 		break;
-#endif
 	    case PdcSetVXform:
 		if ((p) && (m_painter)) {
 			m_viewportMatrixEnabled = p[0].ival;
diff --git a/tdegtk/tqtcairopainter.h b/tdegtk/tqtcairopainter.h
index d04e9a4..c65036f 100644
--- a/tdegtk/tqtcairopainter.h
+++ b/tdegtk/tqtcairopainter.h
@@ -88,8 +88,12 @@ class Q_EXPORT TQt3CairoPaintDevice : public TQPaintDevice		// picture class
 		TQFont m_font;
 		TQImage m_clipRegion;
 		bool m_clipRegionEnabled;
-
 		TQWMatrixStack m_worldMatrixStack;
+
+		PangoTabArray* m_tabStops;
+		PangoTabArray* m_tabStopArray;
+		bool m_tabStopsValid;
+		bool m_tabStopArrayValid;
 };
 
 #endif // TDEQT4PAINTER_H
-- 
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