diff options
Diffstat (limited to 'unix/tkUnixRFont.c')
| -rw-r--r-- | unix/tkUnixRFont.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/unix/tkUnixRFont.c b/unix/tkUnixRFont.c index 134bb45..deecceb 100644 --- a/unix/tkUnixRFont.c +++ b/unix/tkUnixRFont.c @@ -33,6 +33,16 @@ typedef struct { XftDraw *ftDraw; XftColor color; } UnixFtFont; + +/* + * Used to describe the current clipping box. Can't be passed normally because + * the information isn't retrievable from the GC. + */ + +typedef struct ThreadSpecificData { + Region clipRegion; /* The clipping region, or None. */ +} ThreadSpecificData; +static Tcl_ThreadDataKey dataKey; /* * Package initialization: @@ -712,6 +722,8 @@ Tk_DrawChars( int clen, nspec, xStart = x; XftGlyphFontSpec specs[NUM_SPEC]; XGlyphInfo metrics; + ThreadSpecificData *tsdPtr = (ThreadSpecificData *) + Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); if (fontPtr->ftDraw == 0) { #if DEBUG_FONTSEL @@ -738,6 +750,9 @@ Tk_DrawChars( fontPtr->color.color.alpha = 0xffff; fontPtr->color.pixel = values.foreground; } + if (tsdPtr->clipRegion != None) { + XftDrawSetClip(fontPtr->ftDraw, tsdPtr->clipRegion); + } nspec = 0; while (numBytes > 0 && x <= maxCoord && y <= maxCoord) { XftFont *ftFont; @@ -775,6 +790,9 @@ Tk_DrawChars( if (nspec) { XftDrawGlyphFontSpec(fontPtr->ftDraw, &fontPtr->color, specs, nspec); } + if (tsdPtr->clipRegion != None) { + XftDrawSetClip(fontPtr->ftDraw, None); + } doUnderlineStrikeout: if (fontPtr->font.fa.underline != 0) { @@ -789,3 +807,13 @@ Tk_DrawChars( (unsigned) fontPtr->font.underlineHeight); } } + +void +TkUnixSetXftClipRegion( + Region clipRegion) /* The clipping region to install. */ +{ + ThreadSpecificData *tsdPtr = (ThreadSpecificData *) + Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); + + tsdPtr->clipRegion = clipRegion; +} |