Add preliminary font layout support

Add image painting support

2 files changed, 141 insertions, 28 deletions

diff --git a/tdegtk/tqtcairopainter.cpp b/tdegtk/tqtcairopainter.cpp
index a552ee9..75d1b99 100644
--- a/tdegtk/tqtcairopainter.cpp
+++ b/tdegtk/tqtcairopainter.cpp
@@ -100,7 +100,7 @@ void TQt3CairoPaintDevice::resetIntermediateSurface() {
 
 void TQt3CairoPaintDevice::transferIntermediateSurface() {
 	cairo_surface_flush(m_intermediateSurface);
-	if (m_clipRegion.isNull()) {
+	if (!m_clipRegionEnabled) {
 		// Clipping disabled
 		cairo_set_source_surface(m_devicePainter, m_intermediateSurface, 0, 0);
 		cairo_set_operator(m_devicePainter, CAIRO_OPERATOR_SOURCE);
@@ -686,7 +686,7 @@ void TQt3CairoPaintDevice::pangoSetupTextPath(PangoLayout *layout, const char* t
 	pango_font_description_free(desc);
 }
 
-void TQt3CairoPaintDevice::drawText(TQPainter *p, int x, int y, const TQString &str, int pos, int len, TQPainter::TextDirection dir, bool baseline) {
+void TQt3CairoPaintDevice::drawText(TQPainter *p, int x, int y, const TQString &str) {
 	if ((!m_painter) || (!p)) {
 		return;
 	}
@@ -699,7 +699,7 @@ void TQt3CairoPaintDevice::drawText(TQPainter *p, int x, int y, const TQString &
 
 	int baseline_y = pango_layout_get_baseline(layout)/PANGO_SCALE;
 	cairo_new_path(m_painter);
-	cairo_move_to(m_painter, x, (baseline)?y-baseline_y:y);
+	cairo_move_to(m_painter, x, y-baseline_y);
 	updatePen(FALSE);
 
 	pango_cairo_update_layout(m_painter, layout);
@@ -717,6 +717,101 @@ void TQt3CairoPaintDevice::drawText(TQPainter *p, int x, int y, const TQString &
 	transferIntermediateSurface();
 }
 
+void TQt3CairoPaintDevice::drawTextInRect(TQPainter *p, TQRect rect, int textFlags, const TQString &str) {
+	if ((!m_painter) || (!p)) {
+		return;
+	}
+
+	PangoLayout *layout;
+	layout = pango_cairo_create_layout(m_painter);
+
+	TQFont::StyleStrategy qt3fontstrategy = m_font.styleStrategy();
+	pangoSetupTextPath(layout, str.utf8());
+
+	pango_layout_set_width(layout, rect.width()*PANGO_SCALE);
+
+	int fudgedOffsetY = 0;
+
+	// Layout flags
+	if (textFlags & TQt::SingleLine) {
+		// Pango special case to force rendering of only one line of text
+		pango_layout_set_height(layout, 0);
+	}
+	if (!(textFlags & TQt::DontClip)) {
+		cairo_rectangle(m_painter, rect.x()+CAIRO_PIXEL_OFFSET, rect.y()+CAIRO_PIXEL_OFFSET, rect.width(), rect.height());
+		cairo_clip(m_painter);
+	}
+	if (textFlags & TQt::ExpandTabs) {
+		// FIXME
+	}
+	if (textFlags & TQt::ShowPrefix) {
+		// FIXME
+	}
+	if (textFlags & TQt::WordBreak) {
+		pango_layout_set_wrap(layout, PANGO_WRAP_WORD);
+	}
+	if (textFlags & TQt::BreakAnywhere) {
+		pango_layout_set_wrap(layout, PANGO_WRAP_WORD_CHAR);
+	}
+	if (textFlags & TQt::NoAccel) {
+		// FIXME
+	}
+
+	PangoRectangle inkRect;
+	PangoRectangle logicalRect;
+	pango_layout_get_pixel_extents(layout, &inkRect, &logicalRect);
+
+	int stockWidth = logicalRect.x + logicalRect.width;
+	int stockHeight = logicalRect.y + logicalRect.height;
+
+	pango_layout_set_height(layout, rect.height()*PANGO_SCALE);
+
+	// Position flags
+	if (textFlags & TQt::AlignAuto) {
+		// FIXME
+	}
+	if (textFlags & TQt::AlignLeft) {
+		pango_layout_set_alignment(layout, PANGO_ALIGN_LEFT);
+	}
+	if (textFlags & TQt::AlignRight) {
+		pango_layout_set_alignment(layout, PANGO_ALIGN_RIGHT);
+	}
+	if (textFlags & TQt::AlignHCenter) {
+		pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
+	}
+	if (textFlags & TQt::AlignJustify) {
+		// FIXME
+	}
+	if (textFlags & TQt::AlignTop) {
+		fudgedOffsetY = 0;
+	}
+	if (textFlags & TQt::AlignBottom) {
+		fudgedOffsetY = (rect.height()-stockHeight);
+	}
+	if (textFlags & TQt::AlignVCenter) {
+		fudgedOffsetY = ((rect.height()-stockHeight)/2);
+	}
+
+	cairo_new_path(m_painter);
+	cairo_move_to(m_painter, rect.x(), rect.y() + fudgedOffsetY);
+	updatePen(FALSE);
+
+	pango_cairo_update_layout(m_painter, layout);
+	pango_cairo_layout_path(m_painter, layout);
+
+	if ((qt3fontstrategy & TQFont::PreferOutline) || (qt3fontstrategy & TQFont::ForceOutline)) {
+		cairo_stroke_preserve(m_painter);
+	}
+	else {
+		cairo_fill(m_painter);
+	}
+	cairo_reset_clip(m_painter);
+
+	g_object_unref(layout);
+
+	transferIntermediateSurface();
+}
+
 void TQt3CairoPaintDevice::setCairoTransformations() {
 	cairo_matrix_t combinedMatrix;
 	cairo_matrix_t tempMatrix;
@@ -994,33 +1089,43 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 			cairo_save(m_painter);
 			if (p) {
 				TQString string = *p[1].str;
-				drawText(pt, p[0].rect->x()+CAIRO_PIXEL_OFFSET, p[0].rect->y()+CAIRO_PIXEL_OFFSET, string, 0, -1, TQPainter::Auto, TRUE);
+				drawText(pt, p[0].rect->x()+CAIRO_PIXEL_OFFSET, p[0].rect->y()+CAIRO_PIXEL_OFFSET, string);
 			}
 			cairo_restore(m_painter);
 		}
 		break;
-#if 0
 	    case PdcDrawTextFormatted:
-	    	// NOTE
-	    	// Unlike PdcDrawText and PdcDrawText2, PdcDrawTextFormatted and PdcDrawText2Formatted do NOT use the baseline as the Y position coordinate!
-		m_qt4painter->drawText( qt4rect, qt4formattedtextflags, qt4string );
+		if (m_painter) {
+			cairo_save(m_painter);
+			if (p) {
+				TQRect rect = *p[0].rect;
+				TQString string = *p[2].str;
+				drawTextInRect(pt, rect, p[1].ival, string);
+			}
+			cairo_restore(m_painter);
+		}
 		break;
-#endif
 	    case PdcDrawText2:
 		if (m_painter) {
 			cairo_save(m_painter);
 			if (p) {
 				TQString string = *p[1].str;
-				drawText(pt, p[0].rect->x()+CAIRO_PIXEL_OFFSET, p[0].rect->y()+CAIRO_PIXEL_OFFSET, string, 0, -1, TQPainter::Auto, TRUE);
+				drawText(pt, p[0].rect->x()+CAIRO_PIXEL_OFFSET, p[0].rect->y()+CAIRO_PIXEL_OFFSET, string);
 			}
 			cairo_restore(m_painter);
 		}
 		break;
-#if 0
 	    case PdcDrawText2Formatted:
-		m_qt4painter->drawText( qt4rect, qt4formattedtextflags, qt4string );
+		if (m_painter) {
+			cairo_save(m_painter);
+			if (p) {
+				TQRect rect = *p[0].rect;
+				TQString string = *p[2].str;
+				drawTextInRect(pt, rect, p[1].ival, string);
+			}
+			cairo_restore(m_painter);
+		}
 		break;
-#endif
 	    case PdcDrawPixmap:
 		if (m_painter) {
 			cairo_save(m_painter);
@@ -1036,19 +1141,22 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 			transferIntermediateSurface();
 		}
 		break;
-#if 0
-	    case PdcDrawImage: {
-		TQImage image;
-		if ( d->formatMajor < 4 ) {
-		    s >> p >> image;
-		    painter->drawImage( p, image );
-		} else {
-		    s >> r >> image;
-		    painter->drawImage( r, image );
-		}
+	    case PdcDrawImage:
+		if (m_painter) {
+			cairo_save(m_painter);
+			if (p) {
+				TQRect rect = *p[0].rect;
+				TQImage image = *p[1].image;
+				cairo_surface_t* sourceSurface = TQImageToCairoSurface(image);
+				cairo_rectangle(m_painter, rect.x(), rect.y(), rect.width(), rect.height());
+				cairo_set_source_surface(m_painter, sourceSurface, rect.x(), rect.y());
+				cairo_fill(m_painter);
+				cairo_surface_destroy(sourceSurface);
+			}
+			cairo_restore(m_painter);
+			transferIntermediateSurface();
 		}
 		break;
-#endif
 	    case PdcBegin:
 		if (!m_painter) {
 			m_bgColor = TQColor(0,0,0);
@@ -1065,6 +1173,7 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 			cairo_matrix_init_identity(&m_viewportMatrix);
 			setCairoTransformations();
 			m_clipRegion = TQImage();
+			m_clipRegionEnabled = false;
 		}
 		break;
 	    case PdcEnd:
@@ -1278,7 +1387,6 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 		}
 		break;
 #if 0
-#if 0
 #ifndef QT_NO_TRANSFORMATIONS
 	    case PdcSaveWMatrix:
 		painter->saveWorldMatrix();
@@ -1289,9 +1397,10 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 #endif
 #endif
 	    case PdcSetClip:
-		m_qt4painter->setClipping( p[0].ival );
+		if ((p) && (m_painter)) {
+			m_clipRegionEnabled = p[0].ival;
+		}
 		break;
-#endif
 	    case PdcSetClipRegion:
 		if ((p) && (m_painter)) {
 			// SLOW
@@ -1306,9 +1415,11 @@ bool TQt3CairoPaintDevice::cmd( int c, TQPainter *pt, TQPDevCmdParam *p )
 						m_clipRegion.setPixel(x, y, (p[0].rgn->contains(point))?0xffffffff:0x00000000);
 					}
 				}
+				m_clipRegionEnabled = true;
 			}
 			else {
 				m_clipRegion = TQImage();
+				m_clipRegionEnabled = false;
 			}
 		}
 		break;
diff --git a/tdegtk/tqtcairopainter.h b/tdegtk/tqtcairopainter.h
index ef3dbac..9332128 100644
--- a/tdegtk/tqtcairopainter.h
+++ b/tdegtk/tqtcairopainter.h
@@ -62,7 +62,8 @@ class Q_EXPORT TQt3CairoPaintDevice : public TQPaintDevice		// picture class
 		void drawChord(int x, int y, int w, int h, int a, int alen);
 
 		void pangoSetupTextPath(PangoLayout *layout, const char* text);
-		void drawText(TQPainter *p, int x, int y, const TQString &str, int pos, int len, TQPainter::TextDirection dir, bool baseline=TRUE);
+		void drawText(TQPainter *p, int x, int y, const TQString &str);
+		void drawTextInRect(TQPainter *p, TQRect rect, int textFlags, const TQString &str);
 
 		void setCairoTransformations();
 	
@@ -83,6 +84,7 @@ class Q_EXPORT TQt3CairoPaintDevice : public TQPaintDevice		// picture class
 		TQPoint m_brushOrigin;
 		TQFont m_font;
 		TQImage m_clipRegion;
+		bool m_clipRegionEnabled;
 };
 
 #endif // TDEQT4PAINTER_H