Merged tip-443 following acceptation of the TIP by TCT vote (cherrypicked [cb3354b298])

1 files changed, 100 insertions, 6 deletions

diff --git a/generic/tkTextDisp.c b/generic/tkTextDisp.c
index d2499b3..72fc50c 100644
--- a/generic/tkTextDisp.c
+++ b/generic/tkTextDisp.c
@@ -136,11 +136,15 @@ typedef struct StyleValues {
 				 * line of each text line. */
     int lMargin2;		/* Left margin, in pixels, for second and
 				 * later display lines of each text line. */
+    Tk_3DBorder lMarginColor;	/* Color of left margins (1 and 2). */
     int offset;			/* Offset in pixels of baseline, relative to
 				 * baseline of line. */
     int overstrike;		/* Non-zero means draw overstrike through
 				 * text. */
+    XColor *overstrikeColor;	/* Foreground color for overstrike through
+                                 * text. */
     int rMargin;		/* Right margin, in pixels. */
+    Tk_3DBorder rMarginColor;	/* Color of right margin. */
     int spacing1;		/* Spacing above first dline in text line. */
     int spacing2;		/* Spacing between lines of dline. */
     int spacing3;		/* Spacing below last dline in text line. */
@@ -149,6 +153,8 @@ typedef struct StyleValues {
     int tabStyle;		/* One of TABULAR or WORDPROCESSOR. */
     int underline;		/* Non-zero means draw underline underneath
 				 * text. */
+    XColor *underlineColor;	/* Foreground color for underline underneath
+                                 * text. */
     int elide;			/* Zero means draw text, otherwise not. */
     TkWrapMode wrapMode;	/* How to handle wrap-around for this tag.
 				 * One of TEXT_WRAPMODE_CHAR,
@@ -167,6 +173,8 @@ typedef struct TextStyle {
     GC bgGC;			/* Graphics context for background. None means
 				 * use widget background. */
     GC fgGC;			/* Graphics context for foreground. */
+    GC ulGC;			/* Graphics context for underline. */
+    GC ovGC;			/* Graphics context for overstrike. */
     StyleValues *sValuePtr;	/* Raw information from which GCs were
 				 * derived. */
     Tcl_HashEntry *hPtr;	/* Pointer to entry in styleTable. Used to
@@ -234,6 +242,14 @@ typedef struct DLine {
     int spaceBelow;		/* How much extra space was added to the
 				 * bottom of the line because of spacing
 				 * options. This is included in height. */
+    Tk_3DBorder lMarginColor;	/* Background color of the area corresponding
+				 * to the left margin of the display line. */
+    int lMarginWidth;           /* Pixel width of the area corresponding to
+                                 * the left margin. */
+    Tk_3DBorder rMarginColor;	/* Background color of the area corresponding
+				 * to the right margin of the display line. */
+    int rMarginWidth;           /* Pixel width of the area corresponding to
+                                 * the right margin. */
     int length;			/* Total length of line, in pixels. */
     TkTextDispChunk *chunkPtr;	/* Pointer to first chunk in list of all of
 				 * those that are displayed on this line of
@@ -748,6 +764,7 @@ GetStyle(
     TextStyle *stylePtr;
     Tcl_HashEntry *hPtr;
     int numTags, isNew, i;
+    int isSelected;
     XGCValues gcValues;
     unsigned long mask;
     /*
@@ -758,6 +775,7 @@ GetStyle(
     int fgPrio, fontPrio, fgStipplePrio;
     int underlinePrio, elidePrio, justifyPrio, offsetPrio;
     int lMargin1Prio, lMargin2Prio, rMarginPrio;
+    int lMarginColorPrio, rMarginColorPrio;
     int spacing1Prio, spacing2Prio, spacing3Prio;
     int overstrikePrio, tabPrio, tabStylePrio, wrapPrio;
 
@@ -772,11 +790,14 @@ GetStyle(
     fgPrio = fontPrio = fgStipplePrio = -1;
     underlinePrio = elidePrio = justifyPrio = offsetPrio = -1;
     lMargin1Prio = lMargin2Prio = rMarginPrio = -1;
+    lMarginColorPrio = rMarginColorPrio = -1;
     spacing1Prio = spacing2Prio = spacing3Prio = -1;
     overstrikePrio = tabPrio = tabStylePrio = wrapPrio = -1;
     memset(&styleValues, 0, sizeof(StyleValues));
     styleValues.relief = TK_RELIEF_FLAT;
     styleValues.fgColor = textPtr->fgColor;
+    styleValues.underlineColor = textPtr->fgColor;
+    styleValues.overstrikeColor = textPtr->fgColor;
     styleValues.tkfont = textPtr->tkfont;
     styleValues.justify = TK_JUSTIFY_LEFT;
     styleValues.spacing1 = textPtr->spacing1;
@@ -786,12 +807,22 @@ GetStyle(
     styleValues.tabStyle = textPtr->tabStyle;
     styleValues.wrapMode = textPtr->wrapMode;
     styleValues.elide = 0;
+    isSelected = 0;
+
+    for (i = 0 ; i < numTags; i++) {
+        if (textPtr->selTagPtr == tagPtrs[i]) {
+            isSelected = 1;
+            break;
+        }
+    }
 
     for (i = 0 ; i < numTags; i++) {
 	Tk_3DBorder border;
+        XColor *fgColor;
 
 	tagPtr = tagPtrs[i];
 	border = tagPtr->border;
+        fgColor = tagPtr->fgColor;
 
 	/*
 	 * If this is the selection tag, and inactiveSelBorder is NULL (the
@@ -811,6 +842,14 @@ GetStyle(
 	    border = textPtr->inactiveSelBorder;
 	}
 
+        if ((tagPtr->selBorder != NULL) && (isSelected)) {
+            border = tagPtr->selBorder;
+        }
+
+        if ((tagPtr->selFgColor != None) && (isSelected)) {
+            fgColor = tagPtr->selFgColor;
+        }
+
 	if ((border != NULL) && (tagPtr->priority > borderPrio)) {
 	    styleValues.border = border;
 	    borderPrio = tagPtr->priority;
@@ -834,8 +873,8 @@ GetStyle(
 	    styleValues.bgStipple = tagPtr->bgStipple;
 	    bgStipplePrio = tagPtr->priority;
 	}
-	if ((tagPtr->fgColor != None) && (tagPtr->priority > fgPrio)) {
-	    styleValues.fgColor = tagPtr->fgColor;
+	if ((fgColor != None) && (tagPtr->priority > fgPrio)) {
+	    styleValues.fgColor = fgColor;
 	    fgPrio = tagPtr->priority;
 	}
 	if ((tagPtr->tkfont != None) && (tagPtr->priority > fontPrio)) {
@@ -862,6 +901,11 @@ GetStyle(
 	    styleValues.lMargin2 = tagPtr->lMargin2;
 	    lMargin2Prio = tagPtr->priority;
 	}
+	if ((tagPtr->lMarginColor != NULL)
+		&& (tagPtr->priority > lMarginColorPrio)) {
+	    styleValues.lMarginColor = tagPtr->lMarginColor;
+	    lMarginColorPrio = tagPtr->priority;
+	}
 	if ((tagPtr->offsetString != NULL)
 		&& (tagPtr->priority > offsetPrio)) {
 	    styleValues.offset = tagPtr->offset;
@@ -871,12 +915,22 @@ GetStyle(
 		&& (tagPtr->priority > overstrikePrio)) {
 	    styleValues.overstrike = tagPtr->overstrike;
 	    overstrikePrio = tagPtr->priority;
+            if (tagPtr->overstrikeColor != None) {
+                 styleValues.overstrikeColor = tagPtr->overstrikeColor;
+            } else if (fgColor != None) {
+                 styleValues.overstrikeColor = fgColor;
+            }
 	}
 	if ((tagPtr->rMarginString != NULL)
 		&& (tagPtr->priority > rMarginPrio)) {
 	    styleValues.rMargin = tagPtr->rMargin;
 	    rMarginPrio = tagPtr->priority;
 	}
+	if ((tagPtr->rMarginColor != NULL)
+		&& (tagPtr->priority > rMarginColorPrio)) {
+	    styleValues.rMarginColor = tagPtr->rMarginColor;
+	    rMarginColorPrio = tagPtr->priority;
+	}
 	if ((tagPtr->spacing1String != NULL)
 		&& (tagPtr->priority > spacing1Prio)) {
 	    styleValues.spacing1 = tagPtr->spacing1;
@@ -906,6 +960,11 @@ GetStyle(
 		&& (tagPtr->priority > underlinePrio)) {
 	    styleValues.underline = tagPtr->underline;
 	    underlinePrio = tagPtr->priority;
+            if (tagPtr->underlineColor != None) {
+                 styleValues.underlineColor = tagPtr->underlineColor;
+            } else if (fgColor != None) {
+                 styleValues.underlineColor = fgColor;
+            }
 	}
 	if ((tagPtr->elideString != NULL)
 		&& (tagPtr->priority > elidePrio)) {
@@ -962,6 +1021,11 @@ GetStyle(
 	mask |= GCStipple|GCFillStyle;
     }
     stylePtr->fgGC = Tk_GetGC(textPtr->tkwin, mask, &gcValues);
+    mask = GCForeground;
+    gcValues.foreground = styleValues.underlineColor->pixel;
+    stylePtr->ulGC = Tk_GetGC(textPtr->tkwin, mask, &gcValues);
+    gcValues.foreground = styleValues.overstrikeColor->pixel;
+    stylePtr->ovGC = Tk_GetGC(textPtr->tkwin, mask, &gcValues);
     stylePtr->sValuePtr = (StyleValues *)
 	    Tcl_GetHashKey(&textPtr->dInfoPtr->styleTable, hPtr);
     stylePtr->hPtr = hPtr;
@@ -1002,6 +1066,12 @@ FreeStyle(
 	if (stylePtr->fgGC != None) {
 	    Tk_FreeGC(textPtr->display, stylePtr->fgGC);
 	}
+	if (stylePtr->ulGC != None) {
+	    Tk_FreeGC(textPtr->display, stylePtr->ulGC);
+	}
+	if (stylePtr->ovGC != None) {
+	    Tk_FreeGC(textPtr->display, stylePtr->ovGC);
+	}
 	Tcl_DeleteHashEntry(stylePtr->hPtr);
 	ckfree(stylePtr);
     }
@@ -1113,6 +1183,10 @@ LayoutDLine(
     dlPtr->nextPtr = NULL;
     dlPtr->flags = NEW_LAYOUT | OLD_Y_INVALID;
     dlPtr->logicalLinesMerged = 0;
+    dlPtr->lMarginColor = NULL;
+    dlPtr->lMarginWidth = 0;
+    dlPtr->rMarginColor = NULL;
+    dlPtr->rMarginWidth = 0;
 
     /*
      * This is not necessarily totally correct, where we have merged logical
@@ -1387,6 +1461,7 @@ LayoutDLine(
 
 		x = chunkPtr->stylePtr->sValuePtr->lMargin2;
 	    }
+            dlPtr->lMarginWidth = x;
 	    if (wrapMode == TEXT_WRAPMODE_NONE) {
 		maxX = -1;
 	    } else {
@@ -1698,6 +1773,11 @@ LayoutDLine(
     }
     dlPtr->height += dlPtr->spaceAbove + dlPtr->spaceBelow;
     dlPtr->baseline += dlPtr->spaceAbove;
+    dlPtr->lMarginColor = sValuePtr->lMarginColor;
+    dlPtr->rMarginColor = sValuePtr->rMarginColor;
+    if (wrapMode != TEXT_WRAPMODE_NONE) {
+        dlPtr->rMarginWidth = rMargin;
+    }
 
     /*
      * Recompute line length: may have changed because of justification.
@@ -2384,6 +2464,20 @@ DisplayDLine(
 	    Tk_Width(textPtr->tkwin), dlPtr->height, 0, TK_RELIEF_FLAT);
 
     /*
+     * Second, draw the background color of the left and right margins.
+     */
+    if (dlPtr->lMarginColor != NULL) {
+        Tk_Fill3DRectangle(textPtr->tkwin, pixmap, dlPtr->lMarginColor, 0, y,
+                dlPtr->lMarginWidth + dInfoPtr->x - dInfoPtr->curXPixelOffset,
+                dlPtr->height, 0, TK_RELIEF_FLAT);
+    }
+    if (dlPtr->rMarginColor != NULL) {
+        Tk_Fill3DRectangle(textPtr->tkwin, pixmap, dlPtr->rMarginColor,
+                dInfoPtr->maxX - dlPtr->rMarginWidth + dInfoPtr->curXPixelOffset,
+                y, dlPtr->rMarginWidth, dlPtr->height, 0, TK_RELIEF_FLAT);
+    }
+
+    /*
      * Next, draw background information for the whole line.
      */
 
@@ -7845,7 +7939,7 @@ CharDisplayProc(
 		y + baseline - sValuePtr->offset);
 
 	if (sValuePtr->underline) {
-	    TkUnderlineCharsInContext(display, dst, stylePtr->fgGC,
+	    TkUnderlineCharsInContext(display, dst, stylePtr->ulGC,
 		    sValuePtr->tkfont, string, numBytes,
 		    ciPtr->baseChunkPtr->x + xDisplacement,
 		    y + baseline - sValuePtr->offset,
@@ -7855,7 +7949,7 @@ CharDisplayProc(
 	    Tk_FontMetrics fm;
 
 	    Tk_GetFontMetrics(sValuePtr->tkfont, &fm);
-	    TkUnderlineCharsInContext(display, dst, stylePtr->fgGC,
+	    TkUnderlineCharsInContext(display, dst, stylePtr->ovGC,
 		    sValuePtr->tkfont, string, numBytes,
 		    ciPtr->baseChunkPtr->x + xDisplacement,
 		    y + baseline - sValuePtr->offset
@@ -7872,7 +7966,7 @@ CharDisplayProc(
 	Tk_DrawChars(display, dst, stylePtr->fgGC, sValuePtr->tkfont, string,
 		numBytes, offsetX, y + baseline - sValuePtr->offset);
 	if (sValuePtr->underline) {
-	    Tk_UnderlineChars(display, dst, stylePtr->fgGC, sValuePtr->tkfont,
+	    Tk_UnderlineChars(display, dst, stylePtr->ulGC, sValuePtr->tkfont,
 		    string, offsetX,
 		    y + baseline - sValuePtr->offset,
 		    0, numBytes);
@@ -7882,7 +7976,7 @@ CharDisplayProc(
 	    Tk_FontMetrics fm;
 
 	    Tk_GetFontMetrics(sValuePtr->tkfont, &fm);
-	    Tk_UnderlineChars(display, dst, stylePtr->fgGC, sValuePtr->tkfont,
+	    Tk_UnderlineChars(display, dst, stylePtr->ovGC, sValuePtr->tkfont,
 		    string, offsetX,
 		    y + baseline - sValuePtr->offset
 			    - fm.descent - (fm.ascent * 3) / 10,