1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
#include "rfb.h"
int rfbDrawChar(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
int x,int y,unsigned char c,Pixel col)
{
int i,j,width,height;
unsigned char d;
unsigned char* data=font->data+font->metaData[c*5];
int rowstride=rfbScreen->paddedWidthInBytes;
int bpp=rfbScreen->rfbServerFormat.bitsPerPixel/8;
char *colour=(char*)&col;
if(!rfbEndianTest)
colour += 4-bpp;
width=font->metaData[c*5+1];
height=font->metaData[c*5+2];
x+=font->metaData[c*5+3];
y+=-font->metaData[c*5+4]-height+1;
for(j=0;j<height;j++) {
for(i=0;i<width;i++) {
if((i&7)==0) {
d=*data;
data++;
}
if(d&0x80)
memcpy(rfbScreen->frameBuffer+(y+j)*rowstride+(x+i)*bpp,colour,bpp);
d<<=1;
}
/* if((i&7)!=0) data++; */
}
return(width);
}
void rfbDrawString(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
int x,int y,const unsigned char* string,Pixel colour)
{
while(*string) {
x+=rfbDrawChar(rfbScreen,font,x,y,*string,colour);
string++;
}
}
/* TODO: these two functions need to be more efficient */
int rfbDrawCharWithClip(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
int x,int y,unsigned char c,
int x1,int y1,int x2,int y2,
Pixel col,Pixel bcol)
{
int i,j,width,height;
unsigned char d;
unsigned char* data=font->data+font->metaData[c*5];
int rowstride=rfbScreen->paddedWidthInBytes;
int bpp=rfbScreen->rfbServerFormat.bitsPerPixel/8,extra_bytes=0;
char* colour=(char*)&col;
char* bcolour=(char*)&bcol;
if(!rfbEndianTest) {
colour+=4-bpp;
bcolour+=4-bpp;
}
width=font->metaData[c*5+1];
height=font->metaData[c*5+2];
x+=font->metaData[c*5+3];
y+=-font->metaData[c*5+4]-height+1;
/* after clipping, x2 will be count of bytes between rows,
* x1 start of i, y1 start of j, width and height will be adjusted. */
if(y1>y) { y1-=y; data+=(width+7)/8; height-=y1; y+=y1; } else y1=0;
if(x1>x) { x1-=x; data+=x1; width-=x1; x+=x1; extra_bytes+=x1/8; } else x1=0;
if(y2<y+height) height-=y+height-y2;
if(x2<x+width) { extra_bytes+=(x1+width)/8-(x+width-x2+7)/8; width-=x+width-x2; }
for(j=y1;j<height;j++) {
if((x1&7)!=0)
d=data[-1]; /* TODO: check if in this case extra_bytes is correct! */
for(i=x1;i<width;i++) {
if((i&7)==0) {
d=*data;
data++;
}
/* if(x+i>=x1 && x+i<x2 && y+j>=y1 && y+j<y2) */ {
if(d&0x80) {
memcpy(rfbScreen->frameBuffer+(y+j)*rowstride+(x+i)*bpp,
colour,bpp);
} else if(bcol!=col) {
memcpy(rfbScreen->frameBuffer+(y+j)*rowstride+(x+i)*bpp,
bcolour,bpp);
}
}
d<<=1;
}
/* if((i&7)==0) data++; */
data += extra_bytes;
}
return(width);
}
void rfbDrawStringWithClip(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
int x,int y,const unsigned char* string,
int x1,int y1,int x2,int y2,
Pixel colour,Pixel backColour)
{
while(*string) {
x+=rfbDrawCharWithClip(rfbScreen,font,x,y,*string,x1,y1,x2,y2,
colour,backColour);
string++;
}
}
int rfbWidthOfString(rfbFontDataPtr font,const unsigned char* string)
{
int i=0;
while(*string) {
i+=font->metaData[*string*5+1];
string++;
}
return(i);
}
int rfbWidthOfChar(rfbFontDataPtr font,unsigned char c)
{
return(font->metaData[c*5+1]+font->metaData[c*5+3]);
}
void rfbFontBBox(rfbFontDataPtr font,unsigned char c,int* x1,int* y1,int* x2,int* y2)
{
*x1+=font->metaData[c*5+3];
*y1+=-font->metaData[c*5+4]-font->metaData[c*5+2]+1;
*x2=*x1+font->metaData[c*5+1];
*y2=*y1+font->metaData[c*5+2];
}
#ifndef INT_MAX
#define INT_MAX 0x7fffffff
#endif
void rfbWholeFontBBox(rfbFontDataPtr font,
int *x1, int *y1, int *x2, int *y2)
{
int i;
int* m=font->metaData;
(*x1)=(*y1)=INT_MAX; (*x2)=(*y2)=-INT_MAX+1;
for(i=0;i<256;i++) {
if(m[i*5+1]-m[i*5+3]>(*x2))
(*x2)=m[i*5+1]-m[i*5+3];
if(-m[i*5+2]+m[i*5+4]<(*y1))
(*y1)=-m[i*5+2]+m[i*5+4];
if(m[i*5+3]<(*x1))
(*x1)=m[i*5+3];
if(-m[i*5+4]>(*y2))
(*y2)=-m[i*5+4];
}
}
rfbFontDataPtr rfbLoadConsoleFont(char *filename)
{
FILE *f=fopen(filename,"rb");
rfbFontDataPtr p;
int i;
if(!f) return(0);
p=(rfbFontDataPtr)malloc(sizeof(rfbFontData));
p->data=(char*)malloc(4096);
if(1!=fread(p->data,4096,1,f)) {
free(p->data);
free(p);
return(0);
}
fclose(f);
p->metaData=(int*)malloc(256*5*sizeof(int));
for(i=0;i<256;i++) {
p->metaData[i*5+0]=i*16; /* offset */
p->metaData[i*5+1]=8; /* width */
p->metaData[i*5+2]=16; /* height */
p->metaData[i*5+3]=0; /* xhot */
p->metaData[i*5+4]=0; /* yhot */
}
return(p);
}
void rfbFreeFont(rfbFontDataPtr f)
{
free(f->data);
free(f->metaData);
free(f);
}
|
