More work on the TextEdit

docs/releases.txt

@@ -10,6 +10,9 @@ FEATURE:	New board STM32F746G-Discovery
 FEATURE:	New gdisp driver STM32LTDC
 FEATURE:	Better support for Raw32 platforms
 FEATURE:	Implementing widget focusing. See gwinSetFocus() and gwinGetFocus()
+FEATURE:	Adding more font metrics (BaselineX and BaselineY)
+FEATURE:	Adding gdispGetStringWidthCount()
+FEATURE:	Adding TextEdit widget
 
 
 *** Release 2.3 ***

src/gdisp/gdisp.c

@@ -3324,12 +3324,26 @@ void gdispGDrawBox(GDisplay *g, coord_t x, coord_t y, coord_t cx, coord_t cy, co
 		return mf_character_width(font, c);
 	}
 
-	coord_t gdispGetStringWidth(const char* str, font_t font) {
+	coord_t gdispGetStringWidthCount(const char* str, font_t font, uint16_t count) {
-		if (!str)
+		if (!str) {
 			return 0;
+		}
 
-		/* No mutex required as we only read static data */
+		// No mutex required as we only read static data
-		return mf_get_string_width(font, str, 0, 0);
+		#if GDISP_NEED_TEXT_KERNING
+			return mf_get_string_width(font, str, count, TRUE);
+		#else
+			return mf_get_string_width(font, str, count, FALSE);
+		#endif
+	}
+
+	coord_t gdispGetStringWidth(const char* str, font_t font) {
+		if (!str) {
+			return 0;
+		}
+
+		// No mutex required as we only read static data
+		return gdispGetStringWidthCount(str, font, 0);
 	}
 #endif
 

src/gdisp/gdisp.h

@@ -978,7 +978,22 @@ void gdispGDrawBox(GDisplay *g, coord_t x, coord_t y, coord_t cx, coord_t cy, co
 	coord_t gdispGetCharWidth(char c, font_t font);
 
 	/**
-	 * @brief   Get the pixel width of a string.
+	 * @brief   Get the pixel width of a string of a given length.
+	 * @return  The width of the string in pixels.
+	 * @pre		GDISP_NEED_TEXT must be TRUE in your gfxconf.h
+	 *
+	 * @note	Passing 0 to count has the same effect as calling gdispGetStringWidt()
+	 *
+	 * @param[in] str     The string to measure
+	 * @param[in] font    The font to use
+	 * @param[in] count   The number of characters to take into account
+	 *
+	 * @api
+	 */
+	coord_t gdispGetStringWidthCount(const char* str, font_t font, uint16_t count);
+
+	/**
+	 * @brief   Get the pixel width of an entire string.
 	 * @return  The width of the string in pixels.
 	 * @pre		GDISP_NEED_TEXT must be TRUE in your gfxconf.h
 	 *

src/gwin/gwin_textedit.c

@@ -18,6 +18,8 @@
 #include <string.h>
 
 // Some settings
+const int TEXT_PADDING_LEFT		= 4;
+const int CURSOR_PADDING_LEFT	= 0;
 const int CURSOR_EXTRA_HEIGHT	= 1;
 
 // Macros to assist in data type conversions
@@ -185,7 +187,10 @@ GHandle gwinGTexteditCreate(GDisplay* g, GTexteditObject* widget, GWidgetInit* p
 		widget->textBuffer[i] = '\0';
 	}
 
-	widget->cursorPos = 0;
+	// Set text and cursor position
+	strncpy(widget->textBuffer, gwinGetText((GHandle)widget), widget->bufferSize);	// FixMe: pInit->text leads to a segfault
+	widget->cursorPos = strlen(widget->textBuffer);
+
 	widget->w.g.flags |= flags;
 	gwinSetVisible(&widget->w.g, pInit->g.show);
 
@@ -206,22 +211,20 @@ static void gwinTexteditDefaultDraw(GWidgetObject* gw, void* param)
 	color_t cursorColor = (gw->g.flags & GWIN_FLG_SYSENABLED) ? gw->pstyle->enabled.edge : gw->pstyle->disabled.edge;
 
 	// Render background and string
+	//gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, gw->pstyle->background);
 	gdispGFillStringBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, gw->text, gw->g.font, textColor, gw->pstyle->background, justifyLeft);
 
 	// Render cursor (if focused)
-	if (gwinGetFocus() == (GHandle)gw || TRUE) {
+	if (gwinGetFocus() == (GHandle)gw) {
 		// Calculate cursor stuff
-		char textBeforeCursor[gw2obj->bufferSize];
+		coord_t textWidth = gdispGetStringWidthCount(gw2obj->textBuffer, gw->g.font, gw2obj->cursorPos);
-		strncpy(textBeforeCursor, gw->text, gw2obj->cursorPos+1);
-		textBeforeCursor[gw2obj->cursorPos] = '\0';
-		coord_t textWidth = gdispGetStringWidth(textBeforeCursor, gw->g.font);
 		coord_t cursorHeight = gdispGetFontMetric(gw->g.font, fontHeight);
 		coord_t cursorSpacingTop = (gw->g.height - cursorHeight)/2 - CURSOR_EXTRA_HEIGHT;
 		coord_t cursorSpacingBottom = (gw->g.height - cursorHeight)/2 - CURSOR_EXTRA_HEIGHT;
 
 		// Draw cursor
-		coord_t lineX0 = gw->g.x + textWidth - 2;
+		coord_t lineX0 = gw->g.x + textWidth + CURSOR_PADDING_LEFT + gdispGetFontMetric(gw->g.font, fontBaselineX)/2;
-		coord_t lineX1 = gw->g.x + textWidth - 2;
+		coord_t lineX1 = lineX0;
 		coord_t lineY0 = gw->g.y + cursorSpacingTop;
 		coord_t lineY1 = gw->g.y + gw->g.height - cursorSpacingBottom;
 		gdispGDrawLine(gw->g.display, lineX0, lineY0, lineX1, lineY1, cursorColor);

src/gwin/gwin_widget.c

@@ -153,6 +153,7 @@ static void gwidgetEvent(void *param, GEvent *pe) {
 			bool_t foundWidget = FALSE;
 			bool_t endOfListDetected = FALSE;
 			GHandle nextWidget = gwinGetFocus();
+			GHandle prevWidget = gwinGetFocus();
 			do {
 				nextWidget = gwinGetNextWindow(nextWidget);
 				foundWidget = TRUE;
@@ -189,6 +190,15 @@ static void gwidgetEvent(void *param, GEvent *pe) {
 			} while (foundWidget == FALSE);
 			gwinSetFocus(nextWidget);
 
+			// Redraw the new and the previous focused widget because they usually render differently when
+			// they are not focused anymore (eg. no blinking cursor)
+			if (prevWidget != 0) {
+				gwinRedraw(prevWidget);
+			}
+			if (nextWidget != 0) {
+				gwinRedraw(nextWidget);
+			}
+
 			break;
 		}