1
by Daniel Schepler
Import upstream version 1.8.2 |
1 |
#include <stdio.h> |
2 |
#include <ctype.h> |
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3 |
#include <X11/Xlib.h> |
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4 |
#include <X11/Xutil.h> |
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5 |
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6 |
#include "ztypes.h" |
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7 |
#include "xio.h" |
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8 |
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9 |
static char *charbuf; |
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10 |
static long numchars; |
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11 |
static long char_size; |
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12 |
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13 |
typedef struct style_t { |
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14 |
int attr; /* flags are REVERSE, BOLD, EMPHASIS, FIXED_FONT */ |
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15 |
long pos; /* position this style starts at */ |
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16 |
} style; |
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17 |
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18 |
static style *stylelist; |
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19 |
static long numstyles; |
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20 |
static long styles_size; |
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21 |
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22 |
typedef struct word_t { |
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long pos, len; |
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long width; /* in pixels */ |
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int attr; |
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26 |
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27 |
long *letterpos; /* if not NULL, an array[0..len] of pixel offsets from wordpos; */ |
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} word; |
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29 |
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30 |
#define lineflag_Wrapped (1) /* line is a wrap or split from previous line */ |
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31 |
#define lineflag_Extra (2) /* the magic extra line on the end */ |
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32 |
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33 |
typedef struct line_t { |
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long pos; /* line starts here */ |
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35 |
long posend; /* number of chars. May not be exactly to start of next line, because it won't include the newline or space that ends the line. */ |
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36 |
word *wordlist; |
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37 |
long numwords; |
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int flags; |
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39 |
} lline; |
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40 |
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41 |
static lline *linelist; |
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42 |
static long numlines; |
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static long lines_size; |
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44 |
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45 |
static lline *tmplinelist; |
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static long tmplines_size; |
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47 |
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48 |
static long scrollpos; /* character position at top of screen */ |
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static long scrollline; /* number of line at top of screen, after xtext_layout() */ |
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static long lastlineseen; /* last line read before more stuff was output. (-1) to indicate all lines read. */ |
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51 |
static long dotpos, dotlen; /* dotpos is in [0..numchars] */ |
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52 |
static long lastdotpos = (-1), lastdotlen = 0; /* cached values -- fiddled inside xtext_layout() */ |
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53 |
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54 |
static long dirtybeg, dirtyend; /* mark the limits of what needs to be laid out, [) format */ |
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55 |
static long dirtydelta; /* how much the dirty area has grown (or shrunk) */ |
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56 |
static long startlay; /* pos of the char that starts the first laid-out line. */ |
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57 |
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58 |
static int textwin_x, textwin_y, textwin_w, textwin_h; |
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59 |
static int scrollwin_x, scrollwin_y, scrollwin_w, scrollwin_h; |
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60 |
static int scrollel_top, scrollel_bot; |
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61 |
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62 |
typedef struct histunit { |
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63 |
char *str; |
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64 |
int len; |
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65 |
} histunit; |
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66 |
static int historynum, historypos; |
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static histunit *history; |
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68 |
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69 |
/* these are for xtext editing */
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static int buflen; |
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71 |
static char *buffer; |
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72 |
static int *readpos; |
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73 |
static long inputfence; |
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74 |
static int *killflag; |
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75 |
static int originalattr; |
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76 |
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77 |
#define collapse_dot() (dotpos += dotlen, dotlen = 0)
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78 |
#define SIDEMARGIN (4)
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79 |
#define BARENDHEIGHT (12)
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80 |
#define BARWIDTH (17)
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81 |
#define BAREXTRA (4)
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82 |
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83 |
static XPoint polydot[3]; |
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static long linesperpage; |
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85 |
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#ifdef __STDC__
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87 |
static void redrawtext(long beg, long num, int clearnum); |
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88 |
static void flip_selection(long dpos, long dlen); |
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static void find_loc_by_pos(long pos, int *xposret, int *yposret); |
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90 |
static long find_pos_by_loc(int xpos, int ypos); |
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91 |
static long find_line_by_pos(long pos, long guessline); |
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92 |
static void measure_word(lline *curline, word *curword); |
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static void adjust_elevator(); |
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94 |
void xtext_delete_start(long num); |
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#else
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static void redrawtext(); |
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static void flip_selection(); |
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static void find_loc_by_pos(); |
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99 |
static long find_pos_by_loc(); |
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100 |
static long find_line_by_pos(); |
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101 |
static void measure_word(); |
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static void adjust_elevator(); |
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void xtext_delete_start(); |
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104 |
#endif
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105 |
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106 |
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107 |
#ifdef __STDC__
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108 |
void xtext_init() |
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109 |
#else
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110 |
void xtext_init() |
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111 |
#endif
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112 |
{
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113 |
char_size = 256; |
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114 |
charbuf = (char *)malloc(sizeof(char) * char_size); |
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115 |
numchars = 0; |
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116 |
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117 |
styles_size = 8; |
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118 |
stylelist = (style *)malloc(sizeof(style) * styles_size); |
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119 |
numstyles = 1; |
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120 |
stylelist[0].pos = 0; |
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121 |
stylelist[0].attr = 0; /* NORMAL style */ |
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122 |
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123 |
lines_size = 8; |
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124 |
linelist = (lline *)malloc(sizeof(lline) * lines_size); |
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125 |
numlines = 0; |
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126 |
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127 |
tmplines_size = 8; |
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128 |
tmplinelist = (lline *)malloc(sizeof(lline) * tmplines_size); |
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129 |
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130 |
historynum = 0; |
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131 |
history = (histunit *)malloc(prefs.historylength * sizeof(histunit)); |
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132 |
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133 |
scrollpos = 0; |
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scrollline = 0; |
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135 |
startlay = 0; /* not yet used */ |
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136 |
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dirtybeg = 0; |
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dirtyend = 0; |
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139 |
dirtydelta = 0; |
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140 |
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141 |
dotpos = 0; |
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142 |
dotlen = 0; |
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143 |
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144 |
polydot[0].x = 0; |
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polydot[0].y = 0; |
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146 |
polydot[1].x = SIDEMARGIN; |
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147 |
polydot[1].y = 5; |
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148 |
polydot[2].x = -2*SIDEMARGIN; |
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149 |
polydot[2].y = 0; |
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150 |
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151 |
scrollel_top = (-1); /* indicate elevator is not there */ |
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scrollel_bot = (-1); |
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153 |
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lastlineseen = 0; |
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155 |
}
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156 |
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157 |
#ifdef __STDC__
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void xtext_clear_window() |
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#else
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void xtext_clear_window() |
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161 |
#endif
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162 |
{
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163 |
xtext_delete_start(numlines); |
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164 |
}
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166 |
#ifdef __STDC__
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167 |
void xtext_resize(int xpos, int ypos, int width, int height) |
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168 |
#else
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169 |
void xtext_resize(xpos, ypos, width, height) |
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170 |
int xpos; |
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171 |
int ypos; |
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172 |
int width; |
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173 |
int height; |
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174 |
#endif
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{
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scrollwin_x = xpos; |
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177 |
scrollwin_w = BARWIDTH; |
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178 |
scrollwin_y = ypos+BARENDHEIGHT; |
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179 |
scrollwin_h = height-2*BARENDHEIGHT; |
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180 |
textwin_x = xpos+scrollwin_w+SIDEMARGIN+prefs.marginx; |
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textwin_y = ypos; |
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textwin_w = width-2*SIDEMARGIN-scrollwin_w-2*prefs.marginx; |
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textwin_h = height; |
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184 |
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dirtybeg = 0; |
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dirtyend = numchars; |
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dirtydelta = 0; |
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188 |
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linesperpage = height / lineheight; |
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190 |
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xtext_layout(); |
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192 |
}
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#ifdef __STDC__
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void xtext_redraw() |
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#else
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void xtext_redraw() |
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198 |
#endif
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{
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XPoint poly[3]; |
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201 |
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202 |
/* this assumes that an exposure event will not come in between a data update and an xtext_layout call. (unless the exposure event itself forces xtext_layout first?) */
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203 |
/*flip_selection(dotpos, dotlen);*/
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redrawtext(0, -1, -1); |
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205 |
flip_selection(dotpos, dotlen); |
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206 |
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207 |
poly[0].x = scrollwin_x + scrollwin_w/2; |
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poly[0].y = textwin_y + 1; |
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poly[1].x = scrollwin_x + 0; |
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poly[1].y = scrollwin_y - 2; |
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poly[2].x = scrollwin_x + scrollwin_w - 1; |
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poly[2].y = scrollwin_y - 2; |
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XFillPolygon(xiodpy, xiowin, gcgrey, poly, 3, Convex, CoordModeOrigin); |
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215 |
poly[0].x = scrollwin_x + scrollwin_w/2; |
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poly[0].y = textwin_y + textwin_h - 1; |
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poly[1].x = scrollwin_x + 0; |
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poly[1].y = scrollwin_y + scrollwin_h + 2; |
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poly[2].x = scrollwin_x + scrollwin_w - 1; |
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poly[2].y = scrollwin_y + scrollwin_h + 2; |
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XFillPolygon(xiodpy, xiowin, gcgrey, poly, 3, Convex, CoordModeOrigin); |
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223 |
XDrawLine(xiodpy, xiowin, gcblack, scrollwin_x+scrollwin_w, textwin_y, scrollwin_x+scrollwin_w, textwin_h); |
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scrollel_top = (-1); |
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scrollel_bot = (-1); |
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XFillRectangle(xiodpy, xiowin, gcgrey, scrollwin_x, scrollwin_y, scrollwin_w, scrollwin_h); |
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227 |
adjust_elevator(); |
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}
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#ifdef __STDC__
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static long back_to_white(long pos) |
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#else
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static long back_to_white(pos) |
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long pos; |
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#endif
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{
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while (pos > 0 && charbuf[pos-1] != ' ' && charbuf[pos-1] != '\n') |
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pos--; |
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239 |
return pos; |
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}
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#ifdef __STDC__
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static long fore_to_white(long pos) |
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#else
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static long fore_to_white(pos) |
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long pos; |
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#endif
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248 |
{
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249 |
while (pos < numchars && charbuf[pos] != ' ' && charbuf[pos] != '\n') |
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pos++; |
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return pos; |
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252 |
}
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254 |
#ifdef __STDC__
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255 |
static long back_to_nonwhite(long pos) |
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256 |
#else
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static long back_to_nonwhite(pos) |
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258 |
long pos; |
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259 |
#endif
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{
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while (pos > 0 && (charbuf[pos-1] == ' ' || charbuf[pos-1] == '\n')) |
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pos--; |
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return pos; |
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}
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266 |
#ifdef __STDC__
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267 |
static long fore_to_nonwhite(long pos) |
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268 |
#else
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269 |
static long fore_to_nonwhite(pos) |
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long pos; |
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#endif
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{
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273 |
while (pos < numchars && (charbuf[pos] == ' ' || charbuf[pos] == '\n')) |
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274 |
pos++; |
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275 |
return pos; |
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276 |
}
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277 |
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278 |
/* Coordinates are in screen lines. If num < 0, go to the end. clearnum is the number of lines to clear (may be to a notional line); if 0, don't clear at all; if -1, clear whole window. */
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279 |
#ifdef __STDC__
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280 |
static void redrawtext(long beg, long num, int clearnum) |
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281 |
#else
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282 |
static void redrawtext(beg, num, clearnum) |
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283 |
long beg; |
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284 |
long num; |
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285 |
int clearnum; |
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286 |
#endif
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287 |
{
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288 |
long lx, wx, end, clearend; |
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289 |
int ypos, ypos2, xpos; |
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290 |
lline *thisline; |
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291 |
word *thisword; |
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292 |
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293 |
if (num<0) |
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294 |
end = numlines; |
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295 |
else { |
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296 |
end = beg+num; |
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297 |
if (end > numlines) |
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298 |
end = numlines; |
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299 |
}
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300 |
||
301 |
if (beg < scrollline) |
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302 |
beg = scrollline; |
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303 |
||
304 |
if (clearnum > 0) { |
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305 |
clearend = beg+clearnum; |
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306 |
ypos = textwin_y + (beg-scrollline) * lineheight; |
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307 |
ypos2 = textwin_y + (clearend-scrollline) * lineheight; |
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308 |
if (ypos2 > textwin_y+textwin_h) { |
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309 |
ypos2 = textwin_y+textwin_h; |
|
310 |
}
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311 |
if (ypos != ypos2) |
|
312 |
XClearArea(xiodpy, xiowin, textwin_x-SIDEMARGIN, ypos, textwin_w+2*SIDEMARGIN, ypos2-ypos, FALSE); |
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313 |
}
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314 |
else if (clearnum < 0) { |
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315 |
ypos = textwin_y + (beg-scrollline) * lineheight; |
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316 |
ypos2 = textwin_y+textwin_h; |
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317 |
if (ypos != ypos2) |
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318 |
XClearArea(xiodpy, xiowin, textwin_x-SIDEMARGIN, ypos, textwin_w+2*SIDEMARGIN, ypos2-ypos, FALSE); |
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319 |
}
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320 |
||
321 |
for (lx=beg; lx<end; lx++) { |
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322 |
thisline = (&linelist[lx]); |
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323 |
ypos = textwin_y + (lx-scrollline) * lineheight; |
|
324 |
if (ypos + lineheight >= textwin_y + textwin_h) |
|
325 |
break; |
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326 |
xpos = textwin_x; |
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327 |
for (wx=0; wx<thisline->numwords; wx++) { |
|
328 |
thisword = thisline->wordlist+wx; |
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329 |
if (thisword->attr & REVERSE) |
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330 |
XDrawImageString(xiodpy, xiowin, gcfont[thisword->attr], xpos, ypos+lineheightoff, charbuf+thisline->pos+thisword->pos, thisword->len); |
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331 |
else
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332 |
XDrawString(xiodpy, xiowin, gcfont[thisword->attr], xpos, ypos+lineheightoff, charbuf+thisline->pos+thisword->pos, thisword->len); |
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333 |
xpos += thisword->width; |
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334 |
}
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|
335 |
}
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336 |
}
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337 |
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338 |
#ifdef __STDC__
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339 |
static void adjust_elevator() |
|
340 |
#else
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341 |
static void adjust_elevator() |
|
342 |
#endif
|
|
343 |
{
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|
344 |
long newtop, newbot; |
|
345 |
int barheight = (scrollwin_h-2*BAREXTRA); |
|
346 |
||
347 |
if (numlines) { |
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348 |
newtop = ((barheight*scrollline) / numlines) + BAREXTRA; |
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349 |
newbot = ((barheight*(scrollline+linesperpage)) / numlines) + BAREXTRA; |
|
350 |
if (newtop < BAREXTRA) |
|
351 |
newtop = BAREXTRA; |
|
352 |
if (newbot >= scrollwin_h-BAREXTRA) |
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353 |
newbot = scrollwin_h-BAREXTRA; |
|
354 |
}
|
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355 |
else { |
|
356 |
newtop = BAREXTRA; |
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357 |
newbot = scrollwin_h-BAREXTRA; |
|
358 |
}
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359 |
||
360 |
if (newtop == scrollel_top && newbot==scrollel_bot) |
|
361 |
return; |
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362 |
||
363 |
if (scrollel_top != (-1) |
|
364 |
&& (scrollel_top >= newbot || newtop >= scrollel_bot)) { |
|
365 |
/* erase old completely */
|
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366 |
XFillRectangle(xiodpy, xiowin, gcgrey, scrollwin_x, scrollwin_y+scrollel_top, scrollwin_w, scrollel_bot-scrollel_top); |
|
367 |
scrollel_top = (-1); |
|
368 |
}
|
|
369 |
||
370 |
if (scrollel_top == (-1)) { |
|
371 |
/* redraw new completely */
|
|
372 |
XDrawRectangle(xiodpy, xiowin, gcblack, scrollwin_x, scrollwin_y+newtop, scrollwin_w-1, (newbot-newtop)-1); |
|
373 |
XFillRectangle(xiodpy, xiowin, gcwhite, scrollwin_x+1, scrollwin_y+newtop+1, scrollwin_w-2, (newbot-newtop)-2); |
|
374 |
scrollel_top = newtop; |
|
375 |
scrollel_bot = newbot; |
|
376 |
return; |
|
377 |
}
|
|
378 |
||
379 |
/* ok, the old and new overlap */
|
|
380 |
if (newtop < scrollel_top) { |
|
381 |
XFillRectangle(xiodpy, xiowin, gcwhite, scrollwin_x+1, scrollwin_y+newtop+1, scrollwin_w-2, scrollel_top-newtop); |
|
382 |
}
|
|
383 |
else if (newtop > scrollel_top) { |
|
384 |
XFillRectangle(xiodpy, xiowin, gcgrey, scrollwin_x, scrollwin_y+scrollel_top, scrollwin_w, newtop-scrollel_top); |
|
385 |
}
|
|
386 |
||
387 |
if (newbot > scrollel_bot) { |
|
388 |
XFillRectangle(xiodpy, xiowin, gcwhite, scrollwin_x+1, scrollwin_y+scrollel_bot-1, scrollwin_w-2, newbot-scrollel_bot); |
|
389 |
}
|
|
390 |
else if (newbot < scrollel_bot) { |
|
391 |
XFillRectangle(xiodpy, xiowin, gcgrey, scrollwin_x, scrollwin_y+newbot, scrollwin_w, scrollel_bot-newbot); |
|
392 |
}
|
|
393 |
||
394 |
XDrawRectangle(xiodpy, xiowin, gcblack, scrollwin_x, scrollwin_y+newtop, scrollwin_w-1, (newbot-newtop)-1); |
|
395 |
scrollel_top = newtop; |
|
396 |
scrollel_bot = newbot; |
|
397 |
}
|
|
398 |
||
399 |
#ifdef __STDC__
|
|
400 |
static void scroll_to(long newscrollline) |
|
401 |
#else
|
|
402 |
static void scroll_to(newscrollline) |
|
403 |
long newscrollline; |
|
404 |
#endif
|
|
405 |
{
|
|
406 |
long oldscrollline; |
|
407 |
||
408 |
if (newscrollline > numlines-2) |
|
409 |
newscrollline = numlines-2; |
|
410 |
if (newscrollline < 0) |
|
411 |
newscrollline = 0; |
|
412 |
||
413 |
scrollpos = linelist[newscrollline].pos; |
|
414 |
if (scrollline != newscrollline) { |
|
415 |
oldscrollline = scrollline; |
|
416 |
if (!xiobackstore |
|
417 |
|| oldscrollline + linesperpage <= newscrollline |
|
418 |
|| newscrollline + linesperpage <= oldscrollline) { |
|
419 |
scrollline = newscrollline; |
|
420 |
redrawtext(scrollline, -1, -1); |
|
421 |
flip_selection(dotpos, dotlen); |
|
422 |
}
|
|
423 |
else { |
|
424 |
int ypos1, ypos2, yhgt; |
|
425 |
flip_selection(dotpos, dotlen); |
|
426 |
scrollline = newscrollline; |
|
427 |
if (oldscrollline < newscrollline) { |
|
428 |
/* scroll down -- things move up */
|
|
429 |
ypos1 = textwin_y + (newscrollline-oldscrollline) * lineheight; |
|
430 |
ypos2 = textwin_y + (0) * lineheight; |
|
431 |
yhgt = (linesperpage-(newscrollline-oldscrollline)) * lineheight; |
|
432 |
XCopyArea(xiodpy, xiowin, xiowin, gcblack, textwin_x-SIDEMARGIN, ypos1, textwin_w+2*SIDEMARGIN, yhgt, textwin_x-SIDEMARGIN, ypos2); |
|
433 |
redrawtext(linesperpage + oldscrollline, (newscrollline-oldscrollline), (newscrollline-oldscrollline)); |
|
434 |
}
|
|
435 |
else { |
|
436 |
/* scroll up -- things move down */
|
|
437 |
ypos2 = textwin_y + (oldscrollline-newscrollline) * lineheight; |
|
438 |
ypos1 = textwin_y + (0) * lineheight; |
|
439 |
yhgt = (linesperpage-(oldscrollline-newscrollline)) * lineheight; |
|
440 |
XCopyArea(xiodpy, xiowin, xiowin, gcblack, textwin_x-SIDEMARGIN, ypos1, textwin_w+2*SIDEMARGIN, yhgt, textwin_x-SIDEMARGIN, ypos2); |
|
441 |
redrawtext(newscrollline, (oldscrollline-newscrollline), (oldscrollline-newscrollline)); |
|
442 |
}
|
|
443 |
flip_selection(dotpos, dotlen); |
|
444 |
}
|
|
445 |
adjust_elevator(); |
|
446 |
}
|
|
447 |
}
|
|
448 |
||
449 |
#ifdef __STDC__
|
|
450 |
static void refiddle_selection(long oldpos, long oldlen, long newpos, long newlen) |
|
451 |
#else
|
|
452 |
static void refiddle_selection(oldpos, oldlen, newpos, newlen) |
|
453 |
long oldpos; |
|
454 |
long oldlen; |
|
455 |
long newpos; |
|
456 |
long newlen; |
|
457 |
#endif
|
|
458 |
{
|
|
459 |
if (oldlen==0 || newlen==0 || oldpos<0 || newpos<0) { |
|
460 |
flip_selection(oldpos, oldlen); |
|
461 |
flip_selection(newpos, newlen); |
|
462 |
return; |
|
463 |
}
|
|
464 |
||
465 |
if (oldpos == newpos) { |
|
466 |
/* start at same place */
|
|
467 |
if (oldlen < newlen) { |
|
468 |
flip_selection(oldpos+oldlen, newlen-oldlen); |
|
469 |
}
|
|
470 |
else if (newlen < oldlen) { |
|
471 |
flip_selection(oldpos+newlen, oldlen-newlen); |
|
472 |
}
|
|
473 |
return; |
|
474 |
}
|
|
475 |
if (oldpos+oldlen == newpos+newlen) { |
|
476 |
/* end at same place */
|
|
477 |
if (oldpos < newpos) { |
|
478 |
flip_selection(oldpos, newpos-oldpos); |
|
479 |
}
|
|
480 |
else if (newpos < oldpos) { |
|
481 |
flip_selection(newpos, oldpos-newpos); |
|
482 |
}
|
|
483 |
return; |
|
484 |
}
|
|
485 |
||
486 |
flip_selection(oldpos, oldlen); |
|
487 |
flip_selection(newpos, newlen); |
|
488 |
}
|
|
489 |
||
490 |
#ifdef __STDC__
|
|
491 |
static void flip_selection(long dpos, long dlen) |
|
492 |
#else
|
|
493 |
static void flip_selection(dpos, dlen) |
|
494 |
long dpos; |
|
495 |
long dlen; |
|
496 |
#endif
|
|
497 |
{
|
|
498 |
int xpos, ypos; |
|
499 |
int xpos2, ypos2; |
|
500 |
long ybody, ybody2; |
|
501 |
||
502 |
if (dpos < 0) { |
|
503 |
return; /* dot hidden */ |
|
504 |
}
|
|
505 |
||
506 |
if (dlen==0) { |
|
507 |
find_loc_by_pos(dpos, &xpos, &ypos); |
|
508 |
if (ypos < 0 || ypos+lineheight >= textwin_h) { |
|
509 |
return; |
|
510 |
}
|
|
511 |
polydot[0].x = textwin_x + xpos; |
|
512 |
polydot[0].y = textwin_y + ypos + lineheightoff; |
|
513 |
XFillPolygon(xiodpy, xiowin, gcflip, polydot, 3, Convex, CoordModePrevious); |
|
514 |
}
|
|
515 |
else { |
|
516 |
find_loc_by_pos(dpos, &xpos, &ypos); |
|
517 |
find_loc_by_pos(dpos+dlen, &xpos2, &ypos2); |
|
518 |
if (ypos==ypos2) { |
|
519 |
/* within one line */
|
|
520 |
if (xpos!=xpos2 && ypos>=0 && ypos+lineheight<textwin_h) { |
|
521 |
XFillRectangle(xiodpy, xiowin, gcflip, xpos+textwin_x, ypos+textwin_y, xpos2-xpos, lineheight); |
|
522 |
}
|
|
523 |
}
|
|
524 |
else { |
|
525 |
if (xpos < textwin_w && ypos>=0 && ypos+lineheight<textwin_h) { |
|
526 |
/* first partial line */
|
|
527 |
XFillRectangle(xiodpy, xiowin, gcflip, xpos+textwin_x, ypos+textwin_y, textwin_w-xpos, lineheight); |
|
528 |
}
|
|
529 |
ybody = ypos+lineheight; |
|
530 |
ybody2 = ypos2; |
|
531 |
if (ybody < ybody2 && ybody2>=0 && ybody+lineheight<textwin_h) { |
|
532 |
if (ybody < 0) |
|
533 |
ybody = 0; |
|
534 |
if (ybody2+lineheight >= textwin_h) |
|
535 |
ybody2 = textwin_h; |
|
536 |
/* main body */
|
|
537 |
XFillRectangle(xiodpy, xiowin, gcflip, textwin_x, ybody+textwin_y, textwin_w, ybody2-ybody); |
|
538 |
}
|
|
539 |
if (xpos2 && ypos2>=0 && ypos2+lineheight<textwin_h) { |
|
540 |
/* last partial line */
|
|
541 |
XFillRectangle(xiodpy, xiowin, gcflip, textwin_x, ypos2+textwin_y, xpos2, lineheight); |
|
542 |
}
|
|
543 |
}
|
|
544 |
}
|
|
545 |
}
|
|
546 |
||
547 |
/* push lines from tmplinelist[0..newnum) in place of linelist[oldbeg..oldend) */
|
|
548 |
#ifdef __STDC__
|
|
549 |
static void slapover(long newnum, long oldbeg, long oldend) |
|
550 |
#else
|
|
551 |
static void slapover(newnum, oldbeg, oldend) |
|
552 |
long newnum; |
|
553 |
long oldbeg; |
|
554 |
long oldend; |
|
555 |
#endif
|
|
556 |
{
|
|
557 |
long wx, lx; |
|
558 |
long newnumlines; |
|
559 |
||
560 |
newnumlines = numlines-(oldend-oldbeg)+newnum; |
|
561 |
if (newnumlines >= lines_size) { |
|
562 |
while (newnumlines >= lines_size) |
|
563 |
lines_size *= 2; |
|
564 |
linelist = (lline *)realloc(linelist, sizeof(lline) * lines_size); |
|
565 |
}
|
|
566 |
||
567 |
/* clobber old */
|
|
568 |
for (lx=oldbeg; lx<oldend; lx++) { |
|
569 |
word *thisword; |
|
570 |
/* --- finalize word structure --- */
|
|
571 |
for (wx=0, thisword=linelist[lx].wordlist; |
|
572 |
wx<linelist[lx].numwords; |
|
573 |
wx++, thisword++) { |
|
574 |
if (thisword->letterpos) { |
|
575 |
free(thisword->letterpos); |
|
576 |
}
|
|
577 |
}
|
|
578 |
free(linelist[lx].wordlist); |
|
579 |
linelist[lx].wordlist = NULL; |
|
580 |
}
|
|
581 |
||
582 |
if (oldend < numlines && newnumlines != numlines) { |
|
583 |
memmove(&linelist[oldend+(newnumlines-numlines)], |
|
584 |
&linelist[oldend], |
|
585 |
sizeof(lline) * (numlines-oldend)); |
|
586 |
}
|
|
587 |
/* ### adjust scrollline by difference too? */
|
|
588 |
numlines = newnumlines; |
|
589 |
||
590 |
if (newnum) { |
|
591 |
memcpy(&linelist[oldbeg], |
|
592 |
&tmplinelist[0], |
|
593 |
sizeof(lline) * (newnum)); |
|
594 |
}
|
|
595 |
}
|
|
596 |
||
597 |
/* xpos, ypos are relative to textwin origin */
|
|
598 |
#ifdef __STDC__
|
|
599 |
static long find_pos_by_loc(int xpos, int ypos) |
|
600 |
#else
|
|
601 |
static long find_pos_by_loc(xpos, ypos) |
|
602 |
int xpos; |
|
603 |
int ypos; |
|
604 |
#endif
|
|
605 |
{
|
|
606 |
int ix; |
|
607 |
long linenum; |
|
608 |
long wx, atpos, newpos; |
|
609 |
lline *curline; |
|
610 |
word *curword; |
|
611 |
||
612 |
if (ypos < 0) |
|
613 |
linenum = (-1) - ((-1)-ypos / lineheight); |
|
614 |
else
|
|
615 |
linenum = ypos / lineheight; |
|
616 |
||
617 |
linenum += scrollline; |
|
618 |
||
619 |
if (linenum < 0) |
|
620 |
return 0; |
|
621 |
if (linenum >= numlines) |
|
622 |
return numchars; |
|
623 |
||
624 |
curline = (&linelist[linenum]); |
|
625 |
if (xpos < 0) { |
|
626 |
return curline->pos; /* beginning of line */ |
|
627 |
}
|
|
628 |
atpos = 0; |
|
629 |
for (wx=0; wx<curline->numwords; wx++) { |
|
630 |
newpos = atpos + curline->wordlist[wx].width; |
|
631 |
if (xpos < newpos) |
|
632 |
break; |
|
633 |
atpos = newpos; |
|
634 |
}
|
|
635 |
if (wx==curline->numwords) { |
|
636 |
return curline->posend; /* end of line */ |
|
637 |
}
|
|
638 |
||
639 |
xpos -= atpos; /* now xpos is relative to word beginning */ |
|
640 |
curword = (&curline->wordlist[wx]); |
|
641 |
if (!curword->letterpos) |
|
642 |
measure_word(curline, curword); |
|
643 |
||
644 |
for (ix=0; ix<curword->len; ix++) { |
|
645 |
if (xpos <= (curword->letterpos[ix]+curword->letterpos[ix+1])/2) |
|
646 |
break; |
|
647 |
}
|
|
648 |
return curline->pos + curword->pos + ix; |
|
649 |
}
|
|
650 |
||
651 |
/* returns the last line such that pos >= line.pos. guessline is a guess to start searching at; -1 means end of file. Can return -1 if pos is before the start of the layout. */
|
|
652 |
#ifdef __STDC__
|
|
653 |
static long find_line_by_pos(long pos, long guessline) |
|
654 |
#else
|
|
655 |
static long find_line_by_pos(pos, guessline) |
|
656 |
long pos; |
|
657 |
long guessline; |
|
658 |
#endif
|
|
659 |
{
|
|
660 |
long lx; |
|
661 |
||
662 |
if (guessline < 0 || guessline >= numlines) |
|
663 |
guessline = numlines-1; |
|
664 |
||
665 |
if (guessline < numlines-1 && linelist[guessline].pos <= pos) { |
|
666 |
for (lx=guessline; lx<numlines; lx++) { |
|
667 |
if (linelist[lx].pos > pos) |
|
668 |
break; |
|
669 |
}
|
|
670 |
lx--; |
|
671 |
}
|
|
672 |
else { |
|
673 |
for (lx=guessline; lx>=0; lx--) { |
|
674 |
if (linelist[lx].pos <= pos) |
|
675 |
break; |
|
676 |
}
|
|
677 |
}
|
|
678 |
||
679 |
return lx; |
|
680 |
}
|
|
681 |
||
682 |
/* returns values relative to textwin origin, at top of line. */
|
|
683 |
#ifdef __STDC__
|
|
684 |
static void find_loc_by_pos(long pos, int *xposret, int *yposret) |
|
685 |
#else
|
|
686 |
static void find_loc_by_pos(pos, xposret, yposret) |
|
687 |
long pos; |
|
688 |
int *xposret; |
|
689 |
int *yposret; |
|
690 |
#endif
|
|
691 |
{
|
|
692 |
long lx; |
|
693 |
long wx, atpos; |
|
694 |
lline *curline; |
|
695 |
word *curword; |
|
696 |
||
697 |
lx = find_line_by_pos(pos, -1); |
|
698 |
if (lx < 0) { |
|
699 |
/* somehow before first line laid out */
|
|
700 |
*xposret = 0; |
|
701 |
*yposret = (-scrollline) * lineheight; |
|
702 |
return; |
|
703 |
}
|
|
704 |
curline = (&linelist[lx]); |
|
705 |
||
706 |
*yposret = (lx-scrollline) * lineheight; |
|
707 |
atpos = 0; |
|
708 |
for (wx=0; wx<curline->numwords; wx++) { |
|
709 |
if (curline->pos+curline->wordlist[wx].pos+curline->wordlist[wx].len >= pos) |
|
710 |
break; |
|
711 |
atpos += curline->wordlist[wx].width; |
|
712 |
}
|
|
713 |
if (wx==curline->numwords) { |
|
714 |
*xposret = atpos; |
|
715 |
return; |
|
716 |
}
|
|
717 |
||
718 |
curword = (&curline->wordlist[wx]); |
|
719 |
if (!curword->letterpos) |
|
720 |
measure_word(curline, curword); |
|
721 |
||
722 |
atpos += curword->letterpos[pos - (curline->pos+curword->pos)]; |
|
723 |
||
724 |
*xposret = atpos; |
|
725 |
}
|
|
726 |
||
727 |
#ifdef __STDC__
|
|
728 |
static void measure_word(lline *curline, word *curword) |
|
729 |
#else
|
|
730 |
static void measure_word(curline, curword) |
|
731 |
lline *curline; |
|
732 |
word *curword; |
|
733 |
#endif
|
|
734 |
{
|
|
735 |
int cx; |
|
736 |
char *buf; |
|
737 |
int direction; |
|
738 |
int ascent, descent; |
|
739 |
XCharStruct overall; |
|
740 |
long *arr; |
|
741 |
||
742 |
if (curword->letterpos) |
|
743 |
free(curword->letterpos); |
|
744 |
||
745 |
arr = (long *)malloc(sizeof(long) * (curword->len+1)); |
|
746 |
||
747 |
buf = charbuf+curline->pos+curword->pos; |
|
748 |
arr[0] = 0; |
|
749 |
for (cx=0; cx<curword->len-1; cx++) { |
|
750 |
XTextExtents(fontstr[curword->attr], buf+cx, 1, &direction, &ascent, &descent, &overall); |
|
751 |
arr[cx+1] = arr[cx] + overall.width; |
|
752 |
}
|
|
753 |
arr[cx+1] = curword->width; |
|
754 |
||
755 |
curword->letterpos = arr; |
|
756 |
}
|
|
757 |
||
758 |
#ifdef __STDC__
|
|
759 |
static void strip_garbage(char *buf, int len) |
|
760 |
#else
|
|
761 |
static void strip_garbage(buf, len) |
|
762 |
char *buf; |
|
763 |
int len; |
|
764 |
#endif
|
|
765 |
{
|
|
766 |
int ix; |
|
767 |
||
768 |
for (ix=0; ix<len; ix++, buf++) { |
|
769 |
if (iscntrl(*buf)) |
|
770 |
*buf = ' '; |
|
771 |
}
|
|
772 |
}
|
|
773 |
||
774 |
/* pos < 0 means add at end.
|
|
775 |
all this is grotesquely inefficient if adding anywhere but the end. */
|
|
776 |
#ifdef __STDC__
|
|
777 |
void xtext_add(char ch, long pos) |
|
778 |
#else
|
|
779 |
void xtext_add(ch, pos) |
|
780 |
char ch; |
|
781 |
long pos; |
|
782 |
#endif
|
|
783 |
{
|
|
784 |
if (pos<0) |
|
785 |
pos = numchars; |
|
786 |
xtext_replace(pos, 0, &ch, 1); |
|
787 |
}
|
|
788 |
||
789 |
/* update data, adjusting dot and styles as necessary. */
|
|
790 |
#ifdef __STDC__
|
|
791 |
void xtext_replace(long pos, long oldlen, char *buf, long newlen) |
|
792 |
#else
|
|
793 |
void xtext_replace(pos, oldlen, buf, newlen) |
|
794 |
long pos; |
|
795 |
long oldlen; |
|
796 |
char *buf; |
|
797 |
long newlen; |
|
798 |
#endif
|
|
799 |
{
|
|
800 |
long newnumchars; |
|
801 |
||
802 |
newnumchars = numchars-oldlen+newlen; |
|
803 |
if (newnumchars >= char_size) { |
|
804 |
while (newnumchars >= char_size) |
|
805 |
char_size *= 2; |
|
806 |
charbuf = (char *)realloc(charbuf, sizeof(char) * char_size); |
|
807 |
}
|
|
808 |
||
809 |
if (pos < dirtybeg || dirtybeg < 0) |
|
810 |
dirtybeg = pos; |
|
811 |
||
812 |
if (newlen != oldlen) { |
|
813 |
if (pos+oldlen != numchars) { |
|
814 |
memmove(charbuf+pos+newlen, charbuf+pos+oldlen, sizeof(char) * (numchars-(pos+oldlen))); |
|
815 |
}
|
|
816 |
if (numchars >= dirtyend) |
|
817 |
dirtyend = numchars+1; |
|
818 |
dirtydelta += (newlen-oldlen); |
|
819 |
}
|
|
820 |
else { |
|
821 |
if (pos+newlen >= dirtyend) |
|
822 |
dirtyend = pos+newlen+1; |
|
823 |
dirtydelta += (newlen-oldlen); |
|
824 |
}
|
|
825 |
||
826 |
/* copy in the new stuff */
|
|
827 |
if (newlen) |
|
828 |
memmove(charbuf+pos, buf, sizeof(char) * newlen); |
|
829 |
||
830 |
/* diddle the dot */
|
|
831 |
if (dotpos >= pos+oldlen) { |
|
832 |
/* starts after changed region */
|
|
833 |
dotpos += (newlen-oldlen); |
|
834 |
}
|
|
835 |
else if (dotpos >= pos) { |
|
836 |
/* starts inside changed region */
|
|
837 |
if (dotpos+dotlen >= pos+oldlen) { |
|
838 |
/* ...but ends after it */
|
|
839 |
dotlen = (dotpos+dotlen)-(pos+oldlen); |
|
840 |
dotpos = pos+newlen; |
|
841 |
}
|
|
842 |
else { |
|
843 |
/* ...and ends inside it */
|
|
844 |
dotpos = pos+newlen; |
|
845 |
dotlen = 0; |
|
846 |
}
|
|
847 |
}
|
|
848 |
else { |
|
849 |
/* starts before changed region */
|
|
850 |
if (dotpos+dotlen >= pos+oldlen) { |
|
851 |
/* ...but ends after it */
|
|
852 |
dotlen += (newlen-oldlen); |
|
853 |
}
|
|
854 |
else if (dotpos+dotlen >= pos) { |
|
855 |
/* ...but ends inside it */
|
|
856 |
dotlen = (pos+newlen) - dotpos; |
|
857 |
}
|
|
858 |
}
|
|
859 |
||
860 |
numchars = newnumchars; |
|
861 |
}
|
|
862 |
||
863 |
#ifdef __STDC__
|
|
864 |
void xtext_setstyle(long pos, int attr) |
|
865 |
#else
|
|
866 |
void xtext_setstyle(pos, attr) |
|
867 |
long pos; |
|
868 |
int attr; |
|
869 |
#endif
|
|
870 |
{
|
|
871 |
long sx; |
|
872 |
||
873 |
if (pos < 0) |
|
874 |
pos = numchars; |
|
875 |
||
876 |
for (sx=numstyles-1; sx>=0; sx--) { |
|
877 |
if (stylelist[sx].pos <= pos) { |
|
878 |
break; |
|
879 |
}
|
|
880 |
}
|
|
881 |
if (sx < 0) { |
|
882 |
printf("### oops, went back behind style 0\n"); |
|
883 |
return; |
|
884 |
}
|
|
885 |
||
886 |
if (stylelist[sx].pos == pos) { |
|
887 |
stylelist[sx].attr = attr; |
|
888 |
}
|
|
889 |
else { |
|
890 |
/* insert a style after sx */
|
|
891 |
sx++; |
|
892 |
if (numstyles+1 >= styles_size) { |
|
893 |
styles_size *= 2; |
|
894 |
stylelist = (style *)realloc(stylelist, sizeof(style) * styles_size); |
|
895 |
}
|
|
896 |
numstyles++; |
|
897 |
if (sx < numstyles) { |
|
898 |
memmove(&stylelist[sx+1], &stylelist[sx], sizeof(style) * (numstyles-sx)); |
|
899 |
stylelist[sx].pos = pos; |
|
900 |
stylelist[sx].attr = attr; |
|
901 |
}
|
|
902 |
}
|
|
903 |
||
904 |
if (pos != numchars) { |
|
905 |
/* ### should only go to next style */
|
|
906 |
dirtybeg = pos; |
|
907 |
dirtyend = numchars; |
|
908 |
dirtydelta = 0; |
|
909 |
xtext_layout(); |
|
910 |
}
|
|
911 |
}
|
|
912 |
||
913 |
#ifdef __STDC__
|
|
914 |
void xtext_set_lastseen() |
|
915 |
#else
|
|
916 |
void xtext_set_lastseen() |
|
917 |
#endif
|
|
918 |
{
|
|
919 |
lastlineseen = numlines; |
|
920 |
}
|
|
921 |
||
922 |
#ifdef __STDC__
|
|
923 |
void xtext_end_visible() |
|
924 |
#else
|
|
925 |
void xtext_end_visible() |
|
926 |
#endif
|
|
927 |
{
|
|
928 |
long lx; |
|
929 |
||
930 |
if (lastlineseen < 0 || lastlineseen >= (numlines-linesperpage)-1) { |
|
931 |
/* straight to end */
|
|
932 |
if (scrollline < numlines-linesperpage) { |
|
933 |
scroll_to(numlines-linesperpage); |
|
934 |
}
|
|
935 |
}
|
|
936 |
else { |
|
937 |
lx = lastlineseen-1; |
|
938 |
while (lx < numlines-linesperpage) { |
|
939 |
scroll_to(lx); |
|
940 |
xmess_set_message("[Hit any key to continue.]", TRUE); |
|
941 |
xio_pause(); |
|
942 |
lx += (linesperpage-1); |
|
943 |
}
|
|
944 |
scroll_to(numlines-linesperpage); |
|
945 |
xmess_set_message(NULL, TRUE); |
|
946 |
}
|
|
947 |
||
948 |
lastlineseen = (-1); |
|
949 |
}
|
|
950 |
||
951 |
/* delete num lines from the top */
|
|
952 |
#ifdef __STDC__
|
|
953 |
void xtext_delete_start(long num) |
|
954 |
#else
|
|
955 |
void xtext_delete_start(num) |
|
956 |
long num; |
|
957 |
#endif
|
|
958 |
{
|
|
959 |
long delchars; |
|
960 |
long lx, sx, sx2; |
|
961 |
int origattr; |
|
962 |
||
963 |
if (num > numlines) |
|
964 |
num = numlines; |
|
965 |
if (num < 0) |
|
966 |
num = 0; |
|
967 |
||
968 |
if (num == numlines) |
|
969 |
delchars = numchars; |
|
970 |
else
|
|
971 |
delchars = linelist[num].pos; |
|
972 |
if (!delchars) |
|
973 |
return; |
|
974 |
||
975 |
/* lines */
|
|
976 |
slapover(0, 0, num); |
|
977 |
for (lx=0; lx<numlines; lx++) { |
|
978 |
linelist[lx].pos -= delchars; |
|
979 |
linelist[lx].posend -= delchars; |
|
980 |
}
|
|
981 |
||
982 |
/* styles */
|
|
983 |
for (sx=0; sx<numstyles; sx++) { |
|
984 |
if (stylelist[sx].pos > delchars) |
|
985 |
break; |
|
986 |
}
|
|
987 |
if (sx>0) { |
|
988 |
origattr = stylelist[sx-1].attr; |
|
989 |
stylelist[0].pos = 0; |
|
990 |
stylelist[0].attr = origattr; |
|
991 |
for (sx2=1; sx<numstyles; sx++, sx2++) { |
|
992 |
stylelist[sx2].pos = stylelist[sx].pos - delchars; |
|
993 |
stylelist[sx2].attr = stylelist[sx].attr; |
|
994 |
}
|
|
995 |
numstyles = sx2; |
|
996 |
}
|
|
997 |
||
998 |
/* chars */
|
|
999 |
if (delchars < numchars) |
|
1000 |
memmove(&charbuf[0], &charbuf[delchars], sizeof(char) * (numchars-delchars)); |
|
1001 |
numchars -= delchars; |
|
1002 |
||
1003 |
/* adjust, I mean, everything */
|
|
1004 |
if (dirtybeg != (-1)) { |
|
1005 |
dirtybeg -= delchars; |
|
1006 |
dirtyend -= delchars; |
|
1007 |
if (dirtyend < 0) { |
|
1008 |
dirtybeg = (-1); |
|
1009 |
dirtyend = (-1); |
|
1010 |
}
|
|
1011 |
else if (dirtybeg < 0) { |
|
1012 |
dirtybeg = 0; |
|
1013 |
}
|
|
1014 |
}
|
|
1015 |
||
1016 |
dotpos -= delchars; |
|
1017 |
if (dotpos < 0) { |
|
1018 |
if (dotpos+dotlen < 0) { |
|
1019 |
dotpos = 0; |
|
1020 |
dotlen = 0; |
|
1021 |
}
|
|
1022 |
else { |
|
1023 |
dotlen += dotpos; |
|
1024 |
dotpos = 0; |
|
1025 |
}
|
|
1026 |
}
|
|
1027 |
lastdotpos -= delchars; |
|
1028 |
if (lastdotpos < 0) { |
|
1029 |
if (lastdotpos+lastdotlen < 0) { |
|
1030 |
lastdotpos = 0; |
|
1031 |
lastdotlen = 0; |
|
1032 |
}
|
|
1033 |
else { |
|
1034 |
lastdotlen += lastdotpos; |
|
1035 |
lastdotpos = 0; |
|
1036 |
}
|
|
1037 |
}
|
|
1038 |
inputfence -= delchars; |
|
1039 |
if (inputfence < 0) |
|
1040 |
inputfence = 0; |
|
1041 |
||
1042 |
if (lastlineseen != (-1)) { |
|
1043 |
lastlineseen -= num; |
|
1044 |
if (lastlineseen < 0) |
|
1045 |
lastlineseen = (-1); |
|
1046 |
}
|
|
1047 |
||
1048 |
scrollline -= num; |
|
1049 |
scrollpos -= delchars; |
|
1050 |
if (scrollline < 0 || scrollpos < 0) { |
|
1051 |
scrollline = 0; |
|
1052 |
scrollpos = 0; |
|
1053 |
redrawtext(0, -1, -1); |
|
1054 |
flip_selection(dotpos, dotlen); |
|
1055 |
adjust_elevator(); |
|
1056 |
}
|
|
1057 |
else { |
|
1058 |
adjust_elevator(); |
|
1059 |
}
|
|
1060 |
}
|
|
1061 |
||
1062 |
#ifdef __STDC__
|
|
1063 |
void xtext_layout() |
|
1064 |
#else
|
|
1065 |
void xtext_layout() |
|
1066 |
#endif
|
|
1067 |
{
|
|
1068 |
long ix, jx, ejx, lx; |
|
1069 |
long styx, nextstylepos; |
|
1070 |
int curstyle; |
|
1071 |
long overline, overlineend; |
|
1072 |
long tmpl, startpos; |
|
1073 |
int prevflags; |
|
1074 |
int needwholeredraw; |
|
1075 |
||
1076 |
int direction; |
|
1077 |
int ascent, descent; |
|
1078 |
XCharStruct overall; |
|
1079 |
||
1080 |
static long lastline = 0; /* last line dirtied */ |
|
1081 |
||
1082 |
if (dirtybeg < 0 || dirtyend < 0) { |
|
1083 |
if (lastdotpos != dotpos || lastdotlen != dotlen) { |
|
1084 |
refiddle_selection(lastdotpos, lastdotlen, dotpos, dotlen); |
|
1085 |
/*flip_selection(lastdotpos, lastdotlen);*/
|
|
1086 |
lastdotpos = dotpos; |
|
1087 |
lastdotlen = dotlen; |
|
1088 |
/*flip_selection(lastdotpos, lastdotlen);*/
|
|
1089 |
}
|
|
1090 |
return; |
|
1091 |
}
|
|
1092 |
||
1093 |
/* if any text diddling is done, we'll just flip automatically */
|
|
1094 |
flip_selection(lastdotpos, lastdotlen); |
|
1095 |
lastdotpos = dotpos; |
|
1096 |
lastdotlen = dotlen; |
|
1097 |
||
1098 |
if (numlines==0) { |
|
1099 |
overline = 0; |
|
1100 |
startpos = 0; |
|
1101 |
}
|
|
1102 |
else { |
|
1103 |
lx = find_line_by_pos(dirtybeg, lastline); |
|
1104 |
/* now lx is the line containing dirtybeg */
|
|
1105 |
||
1106 |
if (lx>0 && lx<numlines && (linelist[lx].flags & lineflag_Wrapped)) { |
|
1107 |
/* do layout from previous line, in case a word from the changed area pops back there. */
|
|
1108 |
lx--; |
|
1109 |
}
|
|
1110 |
overline = lx; |
|
1111 |
startpos = linelist[overline].pos; |
|
1112 |
}
|
|
1113 |
||
1114 |
/* get the first relevant style */
|
|
1115 |
for (styx=numstyles-1; styx>0; styx--) |
|
1116 |
if (stylelist[styx].pos <= startpos) |
|
1117 |
break; |
|
1118 |
if (styx==numstyles-1) |
|
1119 |
nextstylepos = numchars+10; |
|
1120 |
else
|
|
1121 |
nextstylepos = stylelist[styx+1].pos; |
|
1122 |
curstyle = stylelist[styx].attr; |
|
1123 |
||
1124 |
/* start a-layin' */
|
|
1125 |
tmpl = 0; |
|
1126 |
prevflags = 0; |
|
1127 |
||
1128 |
while (startpos<numchars && !(startpos >= dirtyend && charbuf[startpos]=='\n')) { |
|
1129 |
lline *thisline; |
|
1130 |
long tmpw, tmpwords_size; |
|
1131 |
long widthsofar, spaceswidth; |
|
1132 |
||
1133 |
if (tmpl+1 >= tmplines_size) { |
|
1134 |
/* the +1 allows the extra blank line at the end */
|
|
1135 |
tmplines_size *= 2; |
|
1136 |
tmplinelist = (lline *)realloc(tmplinelist, sizeof(lline) * tmplines_size); |
|
1137 |
}
|
|
1138 |
thisline = (&tmplinelist[tmpl]); |
|
1139 |
thisline->flags = prevflags; |
|
1140 |
tmpwords_size = 8; |
|
1141 |
thisline->wordlist = (word *)malloc(tmpwords_size * sizeof(word)); |
|
1142 |
tmpw = 0; |
|
1143 |
||
1144 |
/*printf("### laying tmpline %d, from charpos %d\n", tmpl, startpos);*/
|
|
1145 |
tmpl++; |
|
1146 |
||
1147 |
ix = startpos; |
|
1148 |
widthsofar = 0; |
|
1149 |
prevflags = 0; |
|
1150 |
||
1151 |
while (ix<numchars && charbuf[ix]!='\n') { |
|
1152 |
word *thisword; |
|
1153 |
||
1154 |
while (ix >= nextstylepos) { |
|
1155 |
/* ahead one style */
|
|
1156 |
styx++; |
|
1157 |
if (styx==numstyles-1) |
|
1158 |
nextstylepos = numchars+10; |
|
1159 |
else
|
|
1160 |
nextstylepos = stylelist[styx+1].pos; |
|
1161 |
curstyle = stylelist[styx].attr; |
|
1162 |
}
|
|
1163 |
||
1164 |
if (tmpw >= tmpwords_size) { |
|
1165 |
tmpwords_size *= 2; |
|
1166 |
thisline->wordlist = (word *)realloc(thisline->wordlist, tmpwords_size * sizeof(word)); |
|
1167 |
}
|
|
1168 |
thisword = (&thisline->wordlist[tmpw]); |
|
1169 |
/* --- initialize word structure --- */
|
|
1170 |
||
1171 |
thisword->letterpos = NULL; |
|
1172 |
for (jx=ix; jx<numchars && jx<nextstylepos && charbuf[jx]!=' ' && charbuf[jx]!='\n'; jx++); |
|
1173 |
||
1174 |
XTextExtents(fontstr[curstyle], charbuf+ix, jx-ix, &direction, &ascent, &descent, &overall); |
|
1175 |
if (widthsofar + overall.width > textwin_w) { |
|
1176 |
prevflags = lineflag_Wrapped; |
|
1177 |
if (tmpw == 0) { |
|
1178 |
/* do something clever -- split the word, put first part in tmplist. */
|
|
1179 |
int letx; |
|
1180 |
long wordwidthsofar = 0; |
|
1181 |
for (letx=ix; letx<jx; letx++) { |
|
1182 |
XTextExtents(fontstr[curstyle], charbuf+letx, 1, &direction, &ascent, &descent, &overall); |
|
1183 |
if (widthsofar + wordwidthsofar+overall.width > textwin_w) { |
|
1184 |
break; |
|
1185 |
}
|
|
1186 |
wordwidthsofar += overall.width; |
|
1187 |
}
|
|
1188 |
jx = letx; |
|
1189 |
overall.width = wordwidthsofar; |
|
1190 |
/* spaceswidth and ejx will be 0 */
|
|
1191 |
/* don't break */
|
|
1192 |
}
|
|
1193 |
else { |
|
1194 |
/* ejx and spaceswidth are properly set from last word, trim them off. */
|
|
1195 |
thisword--; |
|
1196 |
thisword->len -= ejx; |
|
1197 |
thisword->width -= spaceswidth; |
|
1198 |
break; |
|
1199 |
}
|
|
1200 |
}
|
|
1201 |
||
1202 |
/* figure out trailing whitespace */
|
|
1203 |
ejx = 0; |
|
1204 |
while (jx+ejx<numchars && jx+ejx<nextstylepos && charbuf[jx+ejx]==' ') { |
|
1205 |
ejx++; |
|
1206 |
}
|
|
1207 |
spaceswidth = ejx * spacewidth[curstyle]; |
|
1208 |
||
1209 |
/* put the word in tmplist */
|
|
1210 |
thisword->pos = ix-startpos; |
|
1211 |
thisword->len = jx+ejx-ix; |
|
1212 |
thisword->attr = curstyle; |
|
1213 |
thisword->width = overall.width+spaceswidth; |
|
1214 |
widthsofar += thisword->width; |
|
1215 |
tmpw++; |
|
1216 |
||
1217 |
ix = jx+ejx; |
|
1218 |
}
|
|
1219 |
thisline->pos = startpos; |
|
1220 |
if (tmpw) { |
|
1221 |
word *thisword = (&thisline->wordlist[tmpw-1]); |
|
1222 |
thisline->posend = startpos + thisword->pos + thisword->len; |
|
1223 |
}
|
|
1224 |
else { |
|
1225 |
thisline->posend = startpos; |
|
1226 |
}
|
|
1227 |
||
1228 |
if (ix<numchars && charbuf[ix]=='\n') |
|
1229 |
ix++; |
|
1230 |
||
1231 |
thisline->numwords = tmpw; |
|
1232 |
if (prefs.fulljustify && prevflags==lineflag_Wrapped && tmpw>1) { |
|
1233 |
/* gonna regret this, I just bet */
|
|
1234 |
long extraspace, each; |
|
1235 |
extraspace = textwin_w - widthsofar; |
|
1236 |
each = extraspace / (tmpw-1); |
|
1237 |
extraspace -= (each*(tmpw-1)); |
|
1238 |
for (jx=0; jx<extraspace; jx++) { |
|
1239 |
thisline->wordlist[jx].width += (each+1); |
|
1240 |
}
|
|
1241 |
for (; jx<tmpw-1; jx++) { |
|
1242 |
thisline->wordlist[jx].width += each; |
|
1243 |
}
|
|
1244 |
}
|
|
1245 |
||
1246 |
startpos = ix; |
|
1247 |
} /* done laying tmp lines */ |
|
1248 |
||
1249 |
if (startpos == numchars && (numchars==0 || charbuf[numchars-1]=='\n')) { |
|
1250 |
/* lay one more line! */
|
|
1251 |
lline *thisline; |
|
1252 |
thisline = (&tmplinelist[tmpl]); |
|
1253 |
thisline->flags = lineflag_Extra; |
|
1254 |
tmpl++; |
|
1255 |
||
1256 |
thisline->wordlist = (word *)malloc(sizeof(word)); |
|
1257 |
thisline->numwords = 0; |
|
1258 |
thisline->pos = startpos; |
|
1259 |
thisline->posend = startpos; |
|
1260 |
}
|
|
1261 |
||
1262 |
/*printf("### laid %d tmplines, and startpos now %d (delta %d)\n", tmpl, startpos, dirtydelta);*/
|
|
1263 |
||
1264 |
for (lx=overline; lx<numlines && linelist[lx].pos < startpos-dirtydelta; lx++); |
|
1265 |
if (lx==numlines-1 && (linelist[lx].flags & lineflag_Extra)) { |
|
1266 |
/* account for the extra line */
|
|
1267 |
lx++; |
|
1268 |
}
|
|
1269 |
overlineend = lx; |
|
1270 |
||
1271 |
/*printf("### overwrite area is lines [%d..%d) (of %d); replacing with %d lines\n", overline, overlineend, numlines, tmpl);*/
|
|
1272 |
||
1273 |
slapover(tmpl, overline, overlineend); |
|
1274 |
||
1275 |
lastline = overline+tmpl; /* re-cache value */ |
|
1276 |
needwholeredraw = FALSE; |
|
1277 |
||
1278 |
/* diddle scroll stuff */
|
|
1279 |
if (scrollpos <= dirtybeg) { |
|
1280 |
/* disturbance is off bottom of screen -- do nothing */
|
|
1281 |
}
|
|
1282 |
else if (scrollpos >= startpos-dirtydelta) { |
|
1283 |
/* disturbance is off top of screen -- adjust so that no difference is visible. */
|
|
1284 |
scrollpos += dirtydelta; |
|
1285 |
scrollline += (overline-overlineend) - tmpl; |
|
1286 |
}
|
|
1287 |
else { |
|
1288 |
scrollpos += dirtydelta; /* kind of strange, but shouldn't cause trouble */ |
|
1289 |
if (scrollpos >= numchars) |
|
1290 |
scrollpos = numchars-1; |
|
1291 |
if (scrollpos < 0) |
|
1292 |
scrollpos = 0; |
|
1293 |
scrollline = find_line_by_pos(scrollpos, scrollline); |
|
1294 |
needwholeredraw = TRUE; |
|
1295 |
}
|
|
1296 |
||
1297 |
dirtybeg = -1; |
|
1298 |
dirtyend = -1; |
|
1299 |
dirtydelta = 0; |
|
1300 |
||
1301 |
if (needwholeredraw) { |
|
1302 |
redrawtext(scrollline, -1, -1); |
|
1303 |
}
|
|
1304 |
else if (tmpl == overlineend-overline) { |
|
1305 |
redrawtext(overline, tmpl, tmpl); |
|
1306 |
}
|
|
1307 |
else { |
|
1308 |
if (overlineend > numlines) |
|
1309 |
redrawtext(overline, -1, overlineend-overline); |
|
1310 |
else
|
|
1311 |
redrawtext(overline, -1, numlines-overline); |
|
1312 |
}
|
|
1313 |
||
1314 |
flip_selection(lastdotpos, lastdotlen); |
|
1315 |
||
1316 |
adjust_elevator(); |
|
1317 |
}
|
|
1318 |
||
1319 |
static long drag_firstbeg, drag_firstend; |
|
1320 |
static int drag_inscroll; |
|
1321 |
static int drag_scrollmode; /* 0 for click in elevator; 1 for dragged in elevator; 2 for endzones; 3 for click in background */ |
|
1322 |
static int drag_hitypos; |
|
1323 |
static long drag_origline; |
|
1324 |
||
1325 |
/* got a mouse hit. */
|
|
1326 |
#ifdef __STDC__
|
|
1327 |
void xtext_hitdown(int xpos, int ypos, unsigned int button, unsigned int mods, int clicknum) |
|
1328 |
#else
|
|
1329 |
void xtext_hitdown(xpos, ypos, button, mods, clicknum) |
|
1330 |
int xpos; |
|
1331 |
int ypos; |
|
1332 |
unsigned int button; |
|
1333 |
unsigned int mods; |
|
1334 |
int clicknum; |
|
1335 |
#endif
|
|
1336 |
{
|
|
1337 |
long pos; |
|
1338 |
long px, px2; |
|
1339 |
||
1340 |
if (xpos < scrollwin_x+scrollwin_w) |
|
1341 |
drag_inscroll = TRUE; |
|
1342 |
else
|
|
1343 |
drag_inscroll = FALSE; |
|
1344 |
||
1345 |
if (drag_inscroll) { |
|
1346 |
drag_origline = scrollline; |
|
1347 |
drag_hitypos = ypos-textwin_y; |
|
1348 |
switch (button) { /* scrollbar */ |
|
1349 |
case Button1: |
|
1350 |
if (ypos < scrollwin_y) { |
|
1351 |
drag_scrollmode = 2; |
|
1352 |
xted_scroll(op_ToTop); |
|
1353 |
}
|
|
1354 |
else if (ypos >= scrollwin_y+scrollwin_h) { |
|
1355 |
drag_scrollmode = 2; |
|
1356 |
xted_scroll(op_ToBottom); |
|
1357 |
}
|
|
1358 |
else { |
|
1359 |
if (ypos >= scrollwin_y+scrollel_top |
|
1360 |
&& ypos < scrollwin_y+scrollel_bot) |
|
1361 |
drag_scrollmode = 0; |
|
1362 |
else
|
|
1363 |
drag_scrollmode = 3; |
|
1364 |
}
|
|
1365 |
break; |
|
1366 |
case Button3: |
|
1367 |
if (ypos < scrollwin_y) { |
|
1368 |
drag_scrollmode = 2; |
|
1369 |
xted_scroll(op_UpLine); |
|
1370 |
}
|
|
1371 |
else if (ypos >= scrollwin_y+scrollwin_h) { |
|
1372 |
drag_scrollmode = 2; |
|
1373 |
xted_scroll(op_DownLine); |
|
1374 |
}
|
|
1375 |
else { |
|
1376 |
if (ypos >= scrollwin_y+scrollel_top |
|
1377 |
&& ypos < scrollwin_y+scrollel_bot) |
|
1378 |
drag_scrollmode = 0; |
|
1379 |
else
|
|
1380 |
drag_scrollmode = 3; |
|
1381 |
}
|
|
1382 |
break; |
|
1383 |
}
|
|
1384 |
}
|
|
1385 |
else { |
|
1386 |
switch (button) { /* text window */ |
|
1387 |
case Button1: |
|
1388 |
case Button3: |
|
1389 |
xpos -= textwin_x; |
|
1390 |
ypos -= textwin_y; |
|
1391 |
||
1392 |
pos = find_pos_by_loc(xpos, ypos); |
|
1393 |
if (button==Button1) { |
|
1394 |
if (!(clicknum & 1)) { |
|
1395 |
px = back_to_white(pos); |
|
1396 |
px2 = fore_to_white(pos); |
|
1397 |
}
|
|
1398 |
else { |
|
1399 |
px = pos; |
|
1400 |
px2 = pos; |
|
1401 |
}
|
|
1402 |
dotpos = px; |
|
1403 |
dotlen = px2-px; |
|
1404 |
drag_firstbeg = px; |
|
1405 |
drag_firstend = px2; |
|
1406 |
}
|
|
1407 |
else { |
|
1408 |
if (pos < dotpos+dotlen/2) { |
|
1409 |
drag_firstbeg = dotpos+dotlen; |
|
1410 |
}
|
|
1411 |
else { |
|
1412 |
drag_firstbeg = dotpos; |
|
1413 |
}
|
|
1414 |
drag_firstend = drag_firstbeg; |
|
1415 |
if (pos < drag_firstbeg) { |
|
1416 |
if (!(clicknum & 1)) |
|
1417 |
dotpos = back_to_white(pos); |
|
1418 |
else
|
|
1419 |
dotpos = pos; |
|
1420 |
dotlen = drag_firstend-dotpos; |
|
1421 |
}
|
|
1422 |
else if (pos > drag_firstend) { |
|
1423 |
dotpos = drag_firstbeg; |
|
1424 |
if (!(clicknum & 1)) |
|
1425 |
dotlen = fore_to_white(pos)-drag_firstbeg; |
|
1426 |
else
|
|
1427 |
dotlen = pos-drag_firstbeg; |
|
1428 |
}
|
|
1429 |
else { |
|
1430 |
dotpos = drag_firstbeg; |
|
1431 |
dotlen = drag_firstend-drag_firstbeg; |
|
1432 |
}
|
|
1433 |
}
|
|
1434 |
xtext_layout(); |
|
1435 |
break; |
|
1436 |
default: |
|
1437 |
break; |
|
1438 |
}
|
|
1439 |
}
|
|
1440 |
}
|
|
1441 |
||
1442 |
#ifdef __STDC__
|
|
1443 |
void xtext_hitmove(int xpos, int ypos, unsigned int button, unsigned int mods, int clicknum) |
|
1444 |
#else
|
|
1445 |
void xtext_hitmove(xpos, ypos, button, mods, clicknum) |
|
1446 |
int xpos; |
|
1447 |
int ypos; |
|
1448 |
unsigned int button; |
|
1449 |
unsigned int mods; |
|
1450 |
int clicknum; |
|
1451 |
#endif
|
|
1452 |
{
|
|
1453 |
long pos, px; |
|
1454 |
||
1455 |
if (drag_inscroll) { |
|
1456 |
if (drag_scrollmode==0 || drag_scrollmode==1) { |
|
1457 |
drag_scrollmode = 1; |
|
1458 |
px = ((ypos - drag_hitypos)*numlines) / (scrollwin_h-2*BAREXTRA); |
|
1459 |
scroll_to(drag_origline+px); |
|
1460 |
}
|
|
1461 |
}
|
|
1462 |
else { |
|
1463 |
xpos -= textwin_x; |
|
1464 |
ypos -= textwin_y; |
|
1465 |
||
1466 |
switch (button) { |
|
1467 |
case Button1: |
|
1468 |
case Button3: |
|
1469 |
pos = find_pos_by_loc(xpos, ypos); |
|
1470 |
if (pos < drag_firstbeg) { |
|
1471 |
if (!(clicknum & 1)) |
|
1472 |
dotpos = back_to_white(pos); |
|
1473 |
else
|
|
1474 |
dotpos = pos; |
|
1475 |
dotlen = drag_firstend-dotpos; |
|
1476 |
}
|
|
1477 |
else if (pos > drag_firstend) { |
|
1478 |
dotpos = drag_firstbeg; |
|
1479 |
if (!(clicknum & 1)) |
|
1480 |
dotlen = fore_to_white(pos)-drag_firstbeg; |
|
1481 |
else
|
|
1482 |
dotlen = pos-drag_firstbeg; |
|
1483 |
}
|
|
1484 |
else { |
|
1485 |
dotpos = drag_firstbeg; |
|
1486 |
dotlen = drag_firstend-drag_firstbeg; |
|
1487 |
}
|
|
1488 |
xtext_layout(); |
|
1489 |
break; |
|
1490 |
default: |
|
1491 |
break; |
|
1492 |
}
|
|
1493 |
}
|
|
1494 |
}
|
|
1495 |
||
1496 |
#ifdef __STDC__
|
|
1497 |
void xtext_hitup(int xpos, int ypos, unsigned int button, unsigned int mods, int clicknum) |
|
1498 |
#else
|
|
1499 |
void xtext_hitup(xpos, ypos, button, mods, clicknum) |
|
1500 |
int xpos; |
|
1501 |
int ypos; |
|
1502 |
unsigned int button; |
|
1503 |
unsigned int mods; |
|
1504 |
int clicknum; |
|
1505 |
#endif
|
|
1506 |
{
|
|
1507 |
int px; |
|
1508 |
||
1509 |
if (drag_inscroll && (drag_scrollmode==0 || drag_scrollmode==3)) { |
|
1510 |
switch (button) { /* scrollbar */ |
|
1511 |
case Button1: |
|
1512 |
px = (ypos - textwin_y) / lineheight; |
|
1513 |
scroll_to(scrollline+px); |
|
1514 |
break; |
|
1515 |
case Button3: |
|
1516 |
px = (ypos - textwin_y) / lineheight; |
|
1517 |
scroll_to(scrollline-px); |
|
1518 |
break; |
|
1519 |
}
|
|
1520 |
}
|
|
1521 |
}
|
|
1522 |
||
1523 |
/* editing functions... */
|
|
1524 |
||
1525 |
#ifdef __STDC__
|
|
1526 |
void xted_init(int vbuflen, char *vbuffer, int *vreadpos, int *vkillflag, |
|
1527 |
int firsttime) |
|
1528 |
#else
|
|
1529 |
void xted_init(vbuflen, vbuffer, vreadpos, vkillflag, firsttime) |
|
1530 |
int vbuflen; |
|
1531 |
char *vbuffer; |
|
1532 |
int *vreadpos; |
|
1533 |
int *vkillflag; |
|
1534 |
int firsttime; |
|
1535 |
#endif
|
|
1536 |
{
|
|
1537 |
killflag = vkillflag; |
|
1538 |
*killflag = (-1); |
|
1539 |
buflen = vbuflen; |
|
1540 |
buffer = vbuffer; |
|
1541 |
readpos = vreadpos; |
|
1542 |
||
1543 |
if (*readpos) { |
|
1544 |
if (firsttime) { |
|
1545 |
/* Z-machine has already entered the text into the buffer. */
|
|
1546 |
inputfence = numchars - (*readpos); |
|
1547 |
originalattr = stylelist[numstyles-1].attr; |
|
1548 |
xtext_setstyle(inputfence, prefs.inputattr); |
|
1549 |
}
|
|
1550 |
else { |
|
1551 |
/* The terp has to enter the text. */
|
|
1552 |
inputfence = numchars; |
|
1553 |
originalattr = stylelist[numstyles-1].attr; |
|
1554 |
xtext_setstyle(-1, prefs.inputattr); |
|
1555 |
xtext_replace(dotpos, 0, buffer, *readpos); |
|
1556 |
xtext_layout(); |
|
1557 |
}
|
|
1558 |
}
|
|
1559 |
else { |
|
1560 |
inputfence = numchars; |
|
1561 |
originalattr = stylelist[numstyles-1].attr; |
|
1562 |
xtext_setstyle(-1, prefs.inputattr); |
|
1563 |
}
|
|
1564 |
||
1565 |
historypos = historynum; |
|
1566 |
}
|
|
1567 |
||
1568 |
#ifdef __STDC__
|
|
1569 |
void xted_insert(int ch) |
|
1570 |
#else
|
|
1571 |
void xted_insert(ch) |
|
1572 |
int ch; |
|
1573 |
#endif
|
|
1574 |
{
|
|
1575 |
if (iscntrl(ch)) |
|
1576 |
ch = ' '; |
|
1577 |
||
1578 |
if (dotpos < inputfence) { |
|
1579 |
dotpos = numchars; |
|
1580 |
dotlen = 0; |
|
1581 |
}
|
|
1582 |
else { |
|
1583 |
collapse_dot(); |
|
1584 |
}
|
|
1585 |
||
1586 |
xtext_add(ch, dotpos); |
|
1587 |
xtext_layout(); |
|
1588 |
xtext_end_visible(); |
|
1589 |
}
|
|
1590 |
||
1591 |
#ifdef __STDC__
|
|
1592 |
void xted_delete(int op) |
|
1593 |
#else
|
|
1594 |
void xted_delete(op) |
|
1595 |
int op; |
|
1596 |
#endif
|
|
1597 |
{
|
|
1598 |
long pos; |
|
1599 |
||
1600 |
if (dotpos < inputfence) |
|
1601 |
return; |
|
1602 |
collapse_dot(); |
|
1603 |
||
1604 |
switch (op) { |
|
1605 |
case op_BackChar: |
|
1606 |
if (dotpos <= inputfence) |
|
1607 |
return; |
|
1608 |
xtext_replace(dotpos-1, 1, "", 0); |
|
1609 |
break; |
|
1610 |
case op_ForeChar: |
|
1611 |
if (dotpos < inputfence || dotpos >= numchars) |
|
1612 |
return; |
|
1613 |
xtext_replace(dotpos, 1, "", 0); |
|
1614 |
break; |
|
1615 |
case op_BackWord: |
|
1616 |
pos = back_to_nonwhite(dotpos); |
|
1617 |
pos = back_to_white(pos); |
|
1618 |
if (pos < inputfence) |
|
1619 |
pos = inputfence; |
|
1620 |
if (pos >= dotpos) |
|
1621 |
return; |
|
1622 |
xtext_replace(pos, dotpos-pos, "", 0); |
|
1623 |
break; |
|
1624 |
case op_ForeWord: |
|
1625 |
pos = fore_to_nonwhite(dotpos); |
|
1626 |
pos = fore_to_white(pos); |
|
1627 |
if (pos < inputfence) |
|
1628 |
pos = inputfence; |
|
1629 |
if (pos <= dotpos) |
|
1630 |
return; |
|
1631 |
xtext_replace(dotpos, pos-dotpos, "", 0); |
|
1632 |
break; |
|
1633 |
}
|
|
1634 |
xtext_layout(); |
|
1635 |
}
|
|
1636 |
||
1637 |
#ifdef __STDC__
|
|
1638 |
void xted_enter(int op) |
|
1639 |
#else
|
|
1640 |
void xted_enter(op) |
|
1641 |
int op; |
|
1642 |
#endif
|
|
1643 |
{
|
|
1644 |
int len; |
|
1645 |
||
1646 |
if (op != op_Enter) |
|
1647 |
return; |
|
1648 |
||
1649 |
if (killflag) |
|
1650 |
*killflag = '\n'; |
|
1651 |
xtext_setstyle(-1, originalattr); |
|
1652 |
||
1653 |
len = numchars-inputfence; |
|
1654 |
if (len > buflen) |
|
1655 |
len = buflen; |
|
1656 |
memmove(buffer, charbuf+inputfence, len*sizeof(char)); |
|
1657 |
*readpos = len; |
|
1658 |
||
1659 |
if (len) { |
|
1660 |
/* add to history */
|
|
1661 |
if (historynum==prefs.historylength) { |
|
1662 |
free(history[0].str); |
|
1663 |
memmove(&history[0], &history[1], (prefs.historylength-1) * (sizeof(histunit))); |
|
1664 |
}
|
|
1665 |
else
|
|
1666 |
historynum++; |
|
1667 |
history[historynum-1].str = malloc(len*sizeof(char)); |
|
1668 |
memmove(history[historynum-1].str, charbuf+inputfence, len*sizeof(char)); |
|
1669 |
history[historynum-1].len = len; |
|
1670 |
}
|
|
1671 |
||
1672 |
xtext_add('\n', -1); |
|
1673 |
dotpos = numchars; |
|
1674 |
dotlen = 0; |
|
1675 |
xtext_layout(); |
|
1676 |
||
1677 |
/* a somewhat strange place to put the buffer trimmer, but what the heck. The status line shrinker too. */
|
|
1678 |
xstat_reset_window_size(op_Shrink); |
|
1679 |
if (numchars > prefs.buffersize + prefs.bufferslack) { |
|
1680 |
long lx; |
|
1681 |
for (lx=0; lx<numlines; lx++) |
|
1682 |
if (linelist[lx].pos > (numchars-prefs.buffersize)) |
|
1683 |
break; |
|
1684 |
if (lx) { |
|
1685 |
xtext_delete_start(lx); |
|
1686 |
}
|
|
1687 |
}
|
|
1688 |
}
|
|
1689 |
||
1690 |
#ifdef __STDC__
|
|
1691 |
void xtext_line_timeout() |
|
1692 |
#else
|
|
1693 |
void xtext_line_timeout() |
|
1694 |
#endif
|
|
1695 |
{
|
|
1696 |
int len; |
|
1697 |
||
1698 |
/* same as xted_enter(), but skip the unnecessary stuff.
|
|
1699 |
We don't need to add to history, collapse the dot, xtext_layout, trim the buffer, or shrink the status window. */
|
|
1700 |
||
1701 |
len = numchars-inputfence; |
|
1702 |
if (len > buflen) |
|
1703 |
len = buflen; |
|
1704 |
memmove(buffer, charbuf+inputfence, len*sizeof(char)); |
|
1705 |
*readpos = len; |
|
1706 |
||
1707 |
if (len) { |
|
1708 |
xtext_replace(inputfence, len, "", 0); |
|
1709 |
dotpos = numchars; |
|
1710 |
dotlen = 0; |
|
1711 |
xtext_layout(); |
|
1712 |
}
|
|
1713 |
||
1714 |
xtext_setstyle(-1, originalattr); |
|
1715 |
}
|
|
1716 |
||
1717 |
#ifdef __STDC__
|
|
1718 |
void xted_scroll(int op) |
|
1719 |
#else
|
|
1720 |
void xted_scroll(op) |
|
1721 |
int op; |
|
1722 |
#endif
|
|
1723 |
{
|
|
1724 |
switch (op) { |
|
1725 |
case op_UpLine: |
|
1726 |
scroll_to(scrollline-1); |
|
1727 |
break; |
|
1728 |
case op_DownLine: |
|
1729 |
scroll_to(scrollline+1); |
|
1730 |
break; |
|
1731 |
case op_UpPage: |
|
1732 |
scroll_to(scrollline-(linesperpage-1)); |
|
1733 |
break; |
|
1734 |
case op_DownPage: |
|
1735 |
scroll_to(scrollline+(linesperpage-1)); |
|
1736 |
break; |
|
1737 |
case op_ToTop: |
|
1738 |
scroll_to(0); |
|
1739 |
break; |
|
1740 |
case op_ToBottom: |
|
1741 |
scroll_to(numlines); |
|
1742 |
break; |
|
1743 |
}
|
|
1744 |
}
|
|
1745 |
||
1746 |
#ifdef __STDC__
|
|
1747 |
void xted_movecursor(int op) |
|
1748 |
#else
|
|
1749 |
void xted_movecursor(op) |
|
1750 |
int op; |
|
1751 |
#endif
|
|
1752 |
{
|
|
1753 |
long pos; |
|
1754 |
||
1755 |
switch (op) { |
|
1756 |
case op_BackChar: |
|
1757 |
collapse_dot(); |
|
1758 |
if (dotpos > 0) |
|
1759 |
dotpos--; |
|
1760 |
break; |
|
1761 |
case op_ForeChar: |
|
1762 |
collapse_dot(); |
|
1763 |
if (dotpos < numchars) |
|
1764 |
dotpos++; |
|
1765 |
break; |
|
1766 |
case op_BackWord: |
|
1767 |
collapse_dot(); |
|
1768 |
dotpos = back_to_nonwhite(dotpos); |
|
1769 |
dotpos = back_to_white(dotpos); |
|
1770 |
break; |
|
1771 |
case op_ForeWord: |
|
1772 |
collapse_dot(); |
|
1773 |
dotpos = fore_to_nonwhite(dotpos); |
|
1774 |
dotpos = fore_to_white(dotpos); |
|
1775 |
break; |
|
1776 |
case op_BeginLine: |
|
1777 |
if (dotlen) { |
|
1778 |
dotlen = 0; |
|
1779 |
}
|
|
1780 |
else { |
|
1781 |
if (dotpos >= inputfence) |
|
1782 |
dotpos = inputfence; |
|
1783 |
else { |
|
1784 |
pos = dotpos; |
|
1785 |
while (pos > 0 && charbuf[pos-1] != '\n') |
|
1786 |
pos--; |
|
1787 |
dotpos = pos; |
|
1788 |
}
|
|
1789 |
}
|
|
1790 |
break; |
|
1791 |
case op_EndLine: |
|
1792 |
if (dotlen) { |
|
1793 |
collapse_dot(); |
|
1794 |
}
|
|
1795 |
else { |
|
1796 |
if (dotpos >= inputfence) |
|
1797 |
dotpos = numchars; |
|
1798 |
else { |
|
1799 |
pos = dotpos; |
|
1800 |
while (pos < numchars && charbuf[pos] != '\n') |
|
1801 |
pos++; |
|
1802 |
dotpos = pos; |
|
1803 |
}
|
|
1804 |
}
|
|
1805 |
break; |
|
1806 |
}
|
|
1807 |
xtext_layout(); |
|
1808 |
}
|
|
1809 |
||
1810 |
#ifdef __STDC__
|
|
1811 |
void xted_cutbuf(int op) |
|
1812 |
#else
|
|
1813 |
void xted_cutbuf(op) |
|
1814 |
int op; |
|
1815 |
#endif
|
|
1816 |
{
|
|
1817 |
char *cx; |
|
1818 |
int num; |
|
1819 |
long tmppos; |
|
1820 |
||
1821 |
switch (op) { |
|
1822 |
case op_Copy: |
|
1823 |
if (dotlen) { |
|
1824 |
XRotateBuffers(xiodpy, 1); |
|
1825 |
XStoreBytes(xiodpy, charbuf+dotpos, sizeof(char)*dotlen); |
|
1826 |
}
|
|
1827 |
break; |
|
1828 |
case op_Wipe: |
|
1829 |
if (dotlen) { |
|
1830 |
XRotateBuffers(xiodpy, 1); |
|
1831 |
XStoreBytes(xiodpy, charbuf+dotpos, sizeof(char)*dotlen); |
|
1832 |
if (dotpos >= inputfence) { |
|
1833 |
xtext_replace(dotpos, dotlen, "", 0); |
|
1834 |
xtext_layout(); |
|
1835 |
}
|
|
1836 |
}
|
|
1837 |
break; |
|
1838 |
case op_Yank: |
|
1839 |
collapse_dot(); |
|
1840 |
if (dotpos < inputfence) |
|
1841 |
dotpos = numchars; |
|
1842 |
cx = XFetchBytes(xiodpy, &num); |
|
1843 |
strip_garbage(cx, num); |
|
1844 |
if (cx && num) { |
|
1845 |
tmppos = dotpos; |
|
1846 |
xtext_replace(tmppos, 0, cx, num); |
|
1847 |
dotpos = tmppos; |
|
1848 |
dotlen = num; |
|
1849 |
free(cx); |
|
1850 |
}
|
|
1851 |
xtext_layout(); |
|
1852 |
break; |
|
1853 |
case op_Untype: |
|
1854 |
if (numchars == inputfence) |
|
1855 |
break; |
|
1856 |
dotpos = inputfence; |
|
1857 |
dotlen = numchars-inputfence; |
|
1858 |
XRotateBuffers(xiodpy, 1); |
|
1859 |
XStoreBytes(xiodpy, charbuf+dotpos, sizeof(char)*dotlen); |
|
1860 |
xtext_replace(dotpos, dotlen, "", 0); |
|
1861 |
xtext_layout(); |
|
1862 |
break; |
|
1863 |
case op_Kill: |
|
1864 |
if (dotpos < inputfence) { |
|
1865 |
/* maybe extend to end-of-line and copy? */
|
|
1866 |
break; |
|
1867 |
}
|
|
1868 |
dotlen = numchars-dotpos; |
|
1869 |
XRotateBuffers(xiodpy, 1); |
|
1870 |
XStoreBytes(xiodpy, charbuf+dotpos, sizeof(char)*dotlen); |
|
1871 |
xtext_replace(dotpos, dotlen, "", 0); |
|
1872 |
xtext_layout(); |
|
1873 |
break; |
|
1874 |
}
|
|
1875 |
}
|
|
1876 |
||
1877 |
#ifdef __STDC__
|
|
1878 |
void xted_history(int op) |
|
1879 |
#else
|
|
1880 |
void xted_history(op) |
|
1881 |
int op; |
|
1882 |
#endif
|
|
1883 |
{
|
|
1884 |
long pos, len; |
|
1885 |
||
1886 |
switch (op) { |
|
1887 |
case op_BackLine: |
|
1888 |
if (historypos > 0) { |
|
1889 |
if (dotpos < inputfence) { |
|
1890 |
dotpos = numchars; |
|
1891 |
dotlen = 0; |
|
1892 |
}
|
|
1893 |
historypos--; |
|
1894 |
pos = dotpos; |
|
1895 |
xtext_replace(pos, dotlen, history[historypos].str, history[historypos].len); |
|
1896 |
dotpos = pos; |
|
1897 |
dotlen = history[historypos].len; |
|
1898 |
xtext_layout(); |
|
1899 |
}
|
|
1900 |
break; |
|
1901 |
case op_ForeLine: |
|
1902 |
if (historypos < historynum) { |
|
1903 |
if (dotpos < inputfence) { |
|
1904 |
dotpos = numchars; |
|
1905 |
dotlen = 0; |
|
1906 |
}
|
|
1907 |
historypos++; |
|
1908 |
if (historypos < historynum) { |
|
1909 |
pos = dotpos; |
|
1910 |
xtext_replace(dotpos, dotlen, history[historypos].str, history[historypos].len); |
|
1911 |
dotpos = pos; |
|
1912 |
dotlen = history[historypos].len; |
|
1913 |
}
|
|
1914 |
else { |
|
1915 |
pos = dotpos; |
|
1916 |
xtext_replace(dotpos, dotlen, "", 0); |
|
1917 |
dotpos = pos; |
|
1918 |
dotlen = 0; |
|
1919 |
}
|
|
1920 |
xtext_layout(); |
|
1921 |
}
|
|
1922 |
}
|
|
1923 |
}
|
|
1924 |
||
1925 |
#ifdef __STDC__
|
|
1926 |
void xted_define_macro(int keynum) |
|
1927 |
#else
|
|
1928 |
void xted_define_macro(keynum) |
|
1929 |
int keynum; |
|
1930 |
#endif
|
|
1931 |
{
|
|
1932 |
static cmdentry *macrocommand = NULL; |
|
1933 |
char buf[256]; |
|
1934 |
char *cx, *cx2; |
|
1935 |
||
1936 |
if (!macrocommand) { |
|
1937 |
macrocommand = xkey_find_cmd_by_name("macro"); |
|
1938 |
if (!macrocommand) { |
|
1939 |
xmess_set_message("Error: unable to find macro command entry.", FALSE); |
|
1940 |
return; |
|
1941 |
}
|
|
1942 |
}
|
|
1943 |
if (keycmds[keynum] != macrocommand) { |
|
1944 |
cx = xkey_get_key_name(keynum); |
|
1945 |
sprintf(buf, "Key <%s> is not bound to the macro command.", cx); |
|
1946 |
xmess_set_message(buf, FALSE); |
|
1947 |
return; |
|
1948 |
}
|
|
1949 |
||
1950 |
if (dotlen == 0) { |
|
1951 |
xmess_set_message("You must highlight a string to define this macro to.", FALSE); |
|
1952 |
return; |
|
1953 |
}
|
|
1954 |
||
1955 |
cx2 = (char *)malloc(sizeof(char) * (dotlen+1)); |
|
1956 |
memcpy(cx2, charbuf+dotpos, dotlen * sizeof(char)); |
|
1957 |
cx2[dotlen] = '\0'; |
|
1958 |
strip_garbage(cx2, dotlen); |
|
1959 |
||
1960 |
if (keycmdargs[keynum]) |
|
1961 |
free(keycmdargs[keynum]); |
|
1962 |
keycmdargs[keynum] = cx2; |
|
1963 |
cx = xkey_get_key_name(keynum); |
|
1964 |
if (!cx2 || !cx2[0]) |
|
1965 |
sprintf(buf, "Macro <%s> is not defined.", cx); |
|
1966 |
else if (strlen(cx2) > (sizeof(buf)-64)) |
|
1967 |
sprintf(buf, "Macro <%s> is defined to something too long to display.", cx); |
|
1968 |
else
|
|
1969 |
sprintf(buf, "Macro <%s> defined to \"%s\".", cx, cx2); |
|
1970 |
xmess_set_message(buf, FALSE); |
|
1971 |
}
|
|
1972 |
||
1973 |
#ifdef __STDC__
|
|
1974 |
void xted_macro(int op) |
|
1975 |
#else
|
|
1976 |
void xted_macro(op) |
|
1977 |
int op; |
|
1978 |
#endif
|
|
1979 |
{
|
|
1980 |
char *str, *cx; |
|
1981 |
||
1982 |
str = keycmdargs[op]; |
|
1983 |
if (!str || !str[0]) { |
|
1984 |
char buf[128]; |
|
1985 |
cx = xkey_get_key_name(op); |
|
1986 |
sprintf(buf, "Macro <%s> is not defined.", cx); |
|
1987 |
xmess_set_message(buf, FALSE); |
|
1988 |
return; |
|
1989 |
}
|
|
1990 |
||
1991 |
if (dotpos < inputfence) { |
|
1992 |
dotpos = numchars; |
|
1993 |
dotlen = 0; |
|
1994 |
}
|
|
1995 |
else { |
|
1996 |
collapse_dot(); |
|
1997 |
}
|
|
1998 |
||
1999 |
xtext_replace(dotpos, 0, str, strlen(str)); |
|
2000 |
||
2001 |
xtext_layout(); |
|
2002 |
xtext_end_visible(); |
|
2003 |
}
|
|
2004 |
||
2005 |
#ifdef __STDC__
|
|
2006 |
void xted_noop(int op) |
|
2007 |
#else
|
|
2008 |
void xted_noop(op) |
|
2009 |
int op; |
|
2010 |
#endif
|
|
2011 |
{
|
|
2012 |
/* good for debugging */
|
|
2013 |
}
|