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/*******************************************************************************
* *
* textDisp.h -- Nirvana Editor Text Diplay Header File *
* *
* Copyright 2003 The NEdit Developers *
* *
* This is free software; you can redistribute it and/or modify it under the *
* terms of the GNU General Public License as published by the Free Software *
* Foundation; either version 2 of the License, or (at your option) any later *
* version. In addition, you may distribute versions of this program linked to *
* Motif or Open Motif. See README for details. *
* *
* This software is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* software; if not, write to the Free Software Foundation, Inc., 59 Temple *
* Place, Suite 330, Boston, MA 02111-1307 USA *
* *
* Nirvana Text Editor *
* July 31, 2001 *
* *
*******************************************************************************/
#ifndef NEDIT_TEXTDISP_H_INCLUDED
#define NEDIT_TEXTDISP_H_INCLUDED
#include "textBuf.h"
#include <X11/Intrinsic.h>
#include <X11/Xlib.h>
#include <Xm/Xm.h>
enum cursorStyles {NORMAL_CURSOR, CARET_CURSOR, DIM_CURSOR, BLOCK_CURSOR,
HEAVY_CURSOR};
#define NO_HINT -1
typedef struct {
char *highlightName;
char *styleName;
char *colorName;
char isBold;
char isItalic;
unsigned short red;
unsigned short green;
unsigned short blue;
Pixel color;
Boolean underline;
XFontStruct *font;
char *bgColorName; /* background style coloring (name may be NULL) */
unsigned short bgRed;
unsigned short bgGreen;
unsigned short bgBlue;
Pixel bgColor;
} styleTableEntry;
typedef struct graphicExposeTranslationEntry {
int horizontal;
int vertical;
struct graphicExposeTranslationEntry *next;
} graphicExposeTranslationEntry;
typedef void (*unfinishedStyleCBProc)();
typedef struct _calltipStruct {
int ID; /* ID of displayed calltip. Equals
zero if none is displayed. */
Boolean anchored; /* Is it anchored to a position */
int pos; /* Position tip is anchored to */
int hAlign; /* horizontal alignment */
int vAlign; /* vertical alignment */
int alignMode; /* Strict or sloppy alignment */
} calltipStruct;
typedef struct _textDisp {
Widget w;
int top, left, width, height, lineNumLeft, lineNumWidth;
int cursorPos;
int cursorOn;
int cursorX, cursorY; /* X, Y pos. of last drawn cursor
Note: these are used for *drawing*
and are not generally reliable
for finding the insert position's
x/y coordinates! */
int cursorToHint; /* Tells the buffer modified callback
where to move the cursor, to reduce
the number of redraw calls */
int cursorStyle; /* One of enum cursorStyles above */
int cursorPreferredCol; /* Column for vert. cursor movement */
int nVisibleLines; /* # of visible (displayed) lines */
int nBufferLines; /* # of newlines in the buffer */
textBuffer *buffer; /* Contains text to be displayed */
textBuffer *styleBuffer; /* Optional parallel buffer containing
color and font information */
int firstChar, lastChar; /* Buffer positions of first and last
displayed character (lastChar points
either to a newline or one character
beyond the end of the buffer) */
int continuousWrap; /* Wrap long lines when displaying */
int wrapMargin; /* Margin in # of char positions for
wrapping in continuousWrap mode */
int *lineStarts;
int topLineNum; /* Line number of top displayed line
of file (first line of file is 1) */
int absTopLineNum; /* In continuous wrap mode, the line
number of the top line if the text
were not wrapped (note that this is
only maintained as needed). */
int needAbsTopLineNum; /* Externally settable flag to continue
maintaining absTopLineNum even if
it isn't needed for line # display */
int horizOffset; /* Horizontal scroll pos. in pixels */
int visibility; /* Window visibility (see XVisibility event) */
int nStyles; /* Number of entries in styleTable */
styleTableEntry *styleTable; /* Table of fonts and colors for
coloring/syntax-highlighting */
char unfinishedStyle; /* Style buffer entry which triggers
on-the-fly reparsing of region */
unfinishedStyleCBProc /* Callback to parse "unfinished" */
unfinishedHighlightCB; /* regions */
void *highlightCBArg; /* Arg to unfinishedHighlightCB */
XFontStruct *fontStruct; /* Font structure for primary font */
int ascent, descent; /* Composite ascent and descent for
primary font + all-highlight fonts */
int fixedFontWidth; /* Font width if all current fonts are
fixed and match in width, else -1 */
Widget hScrollBar, vScrollBar;
GC gc, selectGC, highlightGC; /* GCs for drawing text */
GC selectBGGC, highlightBGGC; /* GCs for erasing text */
GC cursorFGGC; /* GC for drawing the cursor */
GC lineNumGC; /* GC for drawing line numbers */
GC styleGC; /* GC with color and font unspecified
for drawing colored/styled text */
Pixel fgPixel, bgPixel; /* Foreground/Background colors */
Pixel selectFGPixel, /* Foreground select color */
selectBGPixel; /* Background select color */
Pixel highlightFGPixel, /* Highlight colors are used when */
highlightBGPixel; /* flashing matching parens */
Pixel lineNumFGPixel; /* Color for drawing line numbers */
Pixel cursorFGPixel;
Pixel *bgClassPixel; /* table of colors for each BG class */
unsigned char *bgClass; /* obtains index into bgClassPixel[] */
Widget calltipW; /* The Label widget for the calltip */
Widget calltipShell; /* The Shell that holds the calltip */
calltipStruct calltip; /* The info for the calltip itself */
Pixel calltipFGPixel;
Pixel calltipBGPixel;
int suppressResync; /* Suppress resynchronization of line
starts during buffer updates */
int nLinesDeleted; /* Number of lines deleted during
buffer modification (only used
when resynchronization is
suppressed) */
int modifyingTabDist; /* Whether tab distance is being
modified */
Boolean pointerHidden; /* true if the mouse pointer is
hidden */
graphicExposeTranslationEntry *graphicsExposeQueue;
} textDisp;
textDisp *TextDCreate(Widget widget, Widget hScrollBar, Widget vScrollBar,
Position left, Position top, Position width, Position height,
Position lineNumLeft, Position lineNumWidth, textBuffer *buffer,
XFontStruct *fontStruct, Pixel bgPixel, Pixel fgPixel,
Pixel selectFGPixel, Pixel selectBGPixel, Pixel highlightFGPixel,
Pixel highlightBGPixel, Pixel cursorFGPixel, Pixel lineNumFGPixel,
int continuousWrap, int wrapMargin, XmString bgClassString,
Pixel calltipFGPixel, Pixel calltipBGPixel);
void TextDFree(textDisp *textD);
void TextDSetBuffer(textDisp *textD, textBuffer *buffer);
void TextDAttachHighlightData(textDisp *textD, textBuffer *styleBuffer,
styleTableEntry *styleTable, int nStyles, char unfinishedStyle,
unfinishedStyleCBProc unfinishedHighlightCB, void *cbArg);
void TextDSetColors(textDisp *textD, Pixel textFgP, Pixel textBgP,
Pixel selectFgP, Pixel selectBgP, Pixel hiliteFgP, Pixel hiliteBgP,
Pixel lineNoFgP, Pixel cursorFgP);
void TextDSetFont(textDisp *textD, XFontStruct *fontStruct);
int TextDMinFontWidth(textDisp *textD, Boolean considerStyles);
int TextDMaxFontWidth(textDisp *textD, Boolean considerStyles);
void TextDResize(textDisp *textD, int width, int height);
void TextDRedisplayRect(textDisp *textD, int left, int top, int width,
int height);
void TextDSetScroll(textDisp *textD, int topLineNum, int horizOffset);
void TextDGetScroll(textDisp *textD, int *topLineNum, int *horizOffset);
void TextDInsert(textDisp *textD, char *text);
void TextDOverstrike(textDisp *textD, char *text);
void TextDSetInsertPosition(textDisp *textD, int newPos);
int TextDGetInsertPosition(textDisp *textD);
int TextDXYToPosition(textDisp *textD, int x, int y);
int TextDXYToCharPos(textDisp *textD, int x, int y);
void TextDXYToUnconstrainedPosition(textDisp *textD, int x, int y, int *row,
int *column);
int TextDLineAndColToPos(textDisp *textD, int lineNum, int column);
int TextDOffsetWrappedColumn(textDisp *textD, int row, int column);
int TextDOffsetWrappedRow(textDisp *textD, int row);
int TextDPositionToXY(textDisp *textD, int pos, int *x, int *y);
int TextDPosToLineAndCol(textDisp *textD, int pos, int *lineNum, int *column);
int TextDInSelection(textDisp *textD, int x, int y);
void TextDMakeInsertPosVisible(textDisp *textD);
int TextDMoveRight(textDisp *textD);
int TextDMoveLeft(textDisp *textD);
int TextDMoveUp(textDisp *textD, int absolute);
int TextDMoveDown(textDisp *textD, int absolute);
void TextDBlankCursor(textDisp *textD);
void TextDUnblankCursor(textDisp *textD);
void TextDSetCursorStyle(textDisp *textD, int style);
void TextDSetWrapMode(textDisp *textD, int wrap, int wrapMargin);
int TextDEndOfLine(const textDisp* textD, int pos,
Boolean startPosIsLineStart);
int TextDStartOfLine(const textDisp* textD, int pos);
int TextDCountForwardNLines(const textDisp* textD, int startPos,
unsigned nLines, Boolean startPosIsLineStart);
int TextDCountBackwardNLines(textDisp *textD, int startPos, int nLines);
int TextDCountLines(textDisp *textD, int startPos, int endPos,
int startPosIsLineStart);
void TextDSetupBGClasses(Widget w, XmString str, Pixel **pp_bgClassPixel,
unsigned char **pp_bgClass, Pixel bgPixelDefault);
void TextDSetLineNumberArea(textDisp *textD, int lineNumLeft, int lineNumWidth,
int textLeft);
void TextDMaintainAbsLineNum(textDisp *textD, int state);
int TextDPosOfPreferredCol(textDisp *textD, int column, int lineStartPos);
int TextDPreferredColumn(textDisp *textD, int *visLineNum, int *lineStartPos);
#ifdef VMS /* VMS linker doesn't like long names (>31 chars) */
#define TextDImposeGraphicsExposeTranslation TextDGraphicsExposeTranslation
#endif /* VMS */
void TextDImposeGraphicsExposeTranslation(textDisp *textD, int *xOffset, int *yOffset);
Boolean TextDPopGraphicExposeQueueEntry(textDisp *textD);
void TextDTranlateGraphicExposeQueue(textDisp *textD, int xOffset, int yOffset, Boolean appendEntry);
#endif /* NEDIT_TEXTDISP_H_INCLUDED */
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