diff --git a/sources/appl/Gui/TextViewer.cpp b/sources/appl/Gui/TextViewer.cpp
index e39a88c..2cf8a91 100644
--- a/sources/appl/Gui/TextViewer.cpp
+++ b/sources/appl/Gui/TextViewer.cpp
@@ -69,6 +69,11 @@ appl::TextViewer::~TextViewer(void) {
 	appl::ViewerManager::release(m_viewerManager);
 }
 
+void appl::TextViewer::changeZoom(float _range) {
+	m_displayText.setFontSize(m_displayText.getSize() + _range);
+	markToRedraw();
+}
+
 bool appl::TextViewer::calculateMinSize(void) {
 	m_minSize.setValue(50,50);
 	return true;
@@ -98,7 +103,7 @@ void appl::TextViewer::onRegenerateDisplay(void) {
 	if (m_buffer == NULL) {
 		m_maxSize.setX(256);
 		m_maxSize.setY(256);
-		m_displayText.setTextAlignement(10, m_size.x()-20, ewol::compositing::Text::alignLeft);
+		m_displayText.setTextAlignement(10, m_size.x()-20, ewol::compositing::alignLeft);
 		m_displayText.setRelPos(vec3(10, 0, 0));
 		std::string tmpString("<br/>\n"
 		                       "<font color=\"red\">\n"
@@ -574,7 +579,7 @@ appl::Buffer::Iterator appl::TextViewer::getMousePosition(const vec2& _relativeP
 					} else {
 						//note : Without this condithion the time od selection change to 0.6 ms to 8ms ...
 						//APPL_DEBUG("check : " << -_relativePos.y() << ">=" << positionCurentDisplay.y());
-						m_displayText.print(stringToDisplay[kkk]);
+						m_displayText.printChar(stringToDisplay[kkk]);
 						++countColomn;
 					}
 				}
@@ -943,7 +948,7 @@ appl::Buffer::Iterator appl::TextViewer::getPosSize(const appl::Buffer::Iterator
 			if (stringToDisplay[kkk] == u32char::Return) {
 				return it;
 			} else {
-				m_displayText.print(stringToDisplay[kkk]);
+				m_displayText.printChar(stringToDisplay[kkk]);
 			}
 		}
 		if (m_displayText.getPos().x() >= _distance) {
@@ -972,7 +977,7 @@ float appl::TextViewer::getScreenSize(const appl::Buffer::Iterator& _startLinePo
 			if (stringToDisplay[kkk] == u32char::Return) {
 				return m_displayText.getPos().x() + 2; // TODO : Add the +2 for the end of line ...
 			} else {
-				m_displayText.print(stringToDisplay[kkk]);
+				m_displayText.printChar(stringToDisplay[kkk]);
 			}
 		}
 		ret = m_displayText.getPos().x();
diff --git a/sources/appl/Gui/TextViewer.h b/sources/appl/Gui/TextViewer.h
index 1e7e8fd..0f6cd29 100644
--- a/sources/appl/Gui/TextViewer.h
+++ b/sources/appl/Gui/TextViewer.h
@@ -15,6 +15,7 @@
 
 #include <ewol/widget/WidgetScrolled.h>
 #include <ewol/compositing/Text.h>
+#include <ewol/compositing/TextDF.h>
 #include <ewol/compositing/Drawing.h>
 #include <appl/BufferManager.h>
 #include <appl/Gui/ViewerManager.h>
@@ -66,6 +67,7 @@ namespace appl {
 			virtual void onEventClipboard(enum ewol::context::clipBoard::clipboardListe _clipboardID);
 			virtual void onGetFocus(void);
 			virtual void onLostFocus(void);
+			virtual void changeZoom(float _range);
 		private:
 			float m_lastOffsetDisplay; //!< Line number ofssed in the display
 		private: