/* $XTermId: linedata.c,v 1.71 2009/08/09 00:34:16 tom Exp $ */ /************************************************************ Copyright 2009 by Thomas E. Dickey All Rights Reserved Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name(s) of the above copyright holders shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization. ********************************************************/ #include #include /* FIXME - needed for 'term' */ #include /* * Given a row-number, find the corresponding data for the line in the VT100 * widget. Row numbers can be positive or negative. * * If the data comes from the scrollback, defer that to getScrollback(). */ LineData * getLineData(TScreen * screen, int row) { LineData *result = 0; ScrnBuf buffer; if (row >= 0) { buffer = screen->visbuf; } else { #if OPT_FIFO_LINES buffer = 0; result = getScrollback(screen, row); #else buffer = screen->saveBuf_index; row += screen->savelines; #endif } if (row >= 0) { result = (LineData *) scrnHeadAddr(screen, buffer, (unsigned) row); if (result != 0) { #if 1 /* FIXME - these should be done in setupLineData, etc. */ result->lineSize = (Dimension) MaxCols(screen); #if OPT_WIDE_CHARS if (screen->wide_chars) { result->combSize = (Char) screen->max_combining; } else { result->combSize = 0; } #endif #endif /* FIXME */ } } return result; } /* * Copy line's data, e.g., from one screen buffer to another, given the preset * pointers for the destination. * * TODO: optionally prune unused combining character data from the result. */ void copyLineData(LineData * dst, LineData * src) { dst->bufHead = src->bufHead; #if OPT_WIDE_CHARS dst->combSize = src->combSize; #endif /* * Usually we're copying the same-sized line; a memcpy is faster than * several loops. */ if (dst->lineSize == src->lineSize) { size_t size = (sizeof(dst->attribs[0]) #if OPT_ISO_COLORS + sizeof(dst->color[0]) #endif + sizeof(dst->charData[0]) #if OPT_WIDE_CHARS + sizeof(dst->combData[0][0]) * dst->combSize #endif ); memcpy(dst->attribs, src->attribs, size * dst->lineSize); } else { Dimension col; Dimension limit = ((dst->lineSize < src->lineSize) ? dst->lineSize : src->lineSize); #if OPT_WIDE_CHARS Char comb; #endif for (col = 0; col < limit; ++col) { dst->attribs[col] = src->attribs[col]; #if OPT_ISO_COLORS dst->color[col] = src->color[col]; #endif dst->charData[col] = src->charData[col]; #if OPT_WIDE_CHARS for (comb = 0; comb < dst->combSize; ++comb) { dst->combData[comb][col] = src->combData[comb][col]; } #endif } for (col = limit; col < dst->lineSize; ++col) { dst->attribs[col] = 0; #if OPT_ISO_COLORS dst->color[col] = 0; #endif dst->charData[col] = 0; #if OPT_WIDE_CHARS for (comb = 0; comb < dst->combSize; ++comb) { dst->combData[comb][col] = 0; } #endif } } } #if OPT_WIDE_CHARS #define initLineExtra(screen) \ screen->lineExtra = ((size_t) (screen->max_combining) * sizeof(IChar *)) #else #define initLineExtra(screen) \ screen->lineExtra = 0 #endif void initLineData(XtermWidget xw) { TScreen *screen = &(xw->screen); initLineExtra(screen); TRACE(("initLineData %d\n", screen->lineExtra)); TRACE(("...sizeof(LineData) %d\n", sizeof(LineData))); #if OPT_ISO_COLORS TRACE(("...sizeof(CellColor) %d\n", sizeof(CellColor))); #endif TRACE(("...sizeof(RowData) %d\n", sizeof(RowData))); TRACE(("...offset(lineSize) %d\n", offsetof(LineData, lineSize))); TRACE(("...offset(bufHead) %d\n", offsetof(LineData, bufHead))); #if OPT_WIDE_CHARS TRACE(("...offset(combSize) %d\n", offsetof(LineData, combSize))); #endif TRACE(("...offset(attribs) %d\n", offsetof(LineData, attribs))); #if OPT_ISO_COLORS TRACE(("...offset(color) %d\n", offsetof(LineData, color))); #endif TRACE(("...offset(charData) %d\n", offsetof(LineData, charData))); TRACE(("...offset(combData) %d\n", offsetof(LineData, combData))); } /* * CellData size depends on the "combiningChars" resource. * FIXME - revise this to reduce arithmetic... */ #define CellDataSize(screen) (SizeOfCellData + screen->lineExtra) #define CellDataAddr(screen, data, cell) \ (CellData *)((char *)data + (cell * CellDataSize(screen))) CellData * newCellData(XtermWidget xw, Cardinal count) { CellData *result; TScreen *screen = &(xw->screen); initLineExtra(screen); result = (CellData *) calloc((size_t) count, (size_t) CellDataSize(screen)); return result; } void saveCellData(TScreen * screen, CellData * data, Cardinal cell, LineData * ld, int column) { CellData *item = CellDataAddr(screen, data, cell); if (column < MaxCols(screen)) { item->attribs = ld->attribs[column]; #if OPT_ISO_COLORS item->color = ld->color[column]; #endif item->charData = ld->charData[column]; if_OPT_WIDE_CHARS(screen, { size_t off; item->combSize = ld->combSize; for_each_combData(off, ld) { item->combData[off] = ld->combData[off][column]; } }) } } void restoreCellData(TScreen * screen, CellData * data, Cardinal cell, LineData * ld, int column) { CellData *item = CellDataAddr(screen, data, cell); if (column < MaxCols(screen)) { ld->attribs[column] = item->attribs; #if OPT_ISO_COLORS ld->color[column] = item->color; #endif ld->charData[column] = item->charData; if_OPT_WIDE_CHARS(screen, { size_t off; ld->combSize = item->combSize; for_each_combData(off, ld) { ld->combData[off][column] = item->combData[off]; } }) } }