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tdraw.h - plan9port - [fork] Plan 9 from user space |
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--- |
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tdraw.h (17881B) |
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--- |
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1 #ifndef _DRAW_H_ |
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2 #define _DRAW_H_ 1 |
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3 #if defined(__cplusplus) |
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4 extern "C" { |
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5 #endif |
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6 |
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7 AUTOLIB(draw) |
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8 #ifdef __APPLE__ |
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9 AUTOFRAMEWORK(Carbon) |
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10 #endif |
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11 |
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12 typedef struct Cachefont Cachefont; |
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13 typedef struct Cacheinfo Cacheinfo; |
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14 typedef struct Cachesubf Cachesubf; |
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15 typedef struct Display Display; |
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16 typedef struct Font Font; |
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17 typedef struct Fontchar Fontchar; |
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18 typedef struct Image Image; |
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19 typedef struct Mouse Mouse; |
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20 typedef struct Point Point; |
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21 typedef struct Rectangle Rectangle; |
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22 typedef struct RGB RGB; |
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23 typedef struct Screen Screen; |
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24 typedef struct Subfont Subfont; |
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25 |
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26 struct Mux; |
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27 |
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28 extern int Rfmt(Fmt*); |
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29 extern int Pfmt(Fmt*); |
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30 |
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31 #define DOpaque 0xFFFFFFFF |
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32 #define DTransparent 0x00000000 /* only us… |
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33 #define DBlack 0x000000FF |
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34 #define DWhite 0xFFFFFFFF |
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35 #define DRed 0xFF0000FF |
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36 #define DGreen 0x00FF00FF |
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37 #define DBlue 0x0000FFFF |
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38 #define DCyan 0x00FFFFFF |
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39 #define DMagenta 0xFF00FFFF |
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40 #define DYellow 0xFFFF00FF |
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41 #define DPaleyellow 0xFFFFAAFF |
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42 #define DDarkyellow 0xEEEE9EFF |
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43 #define DDarkgreen 0x448844FF |
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44 #define DPalegreen 0xAAFFAAFF |
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45 #define DMedgreen 0x88CC88FF |
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46 #define DDarkblue 0x000055FF |
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47 #define DPalebluegreen 0xAAFFFFFF |
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48 #define DPaleblue 0x0000BBFF |
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49 #define DBluegreen 0x008888FF |
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50 #define DGreygreen 0x55AAAAFF |
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51 #define DPalegreygreen 0x9EEEEEFF |
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52 #define DYellowgreen 0x99994CFF |
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53 #define DMedblue 0x000099FF |
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54 #define DGreyblue 0x005DBBFF |
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55 #define DPalegreyblue 0x4993DDFF |
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56 #define DPurpleblue 0x8888CCFF |
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57 |
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58 #define DNotacolor 0xFFFFFF00 |
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59 #define DNofill DNotacolor |
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60 |
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61 enum |
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62 { |
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63 Displaybufsize = 8000, |
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64 ICOSSCALE = 1024, |
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65 Borderwidth = 4, |
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66 DefaultDPI = 133 |
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67 }; |
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68 |
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69 enum |
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70 { |
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71 /* refresh methods */ |
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72 Refbackup = 0, |
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73 Refnone = 1, |
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74 Refmesg = 2 |
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75 }; |
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76 #define NOREFRESH ((void*)-1) |
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77 |
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78 enum |
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79 { |
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80 /* line ends */ |
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81 Endsquare = 0, |
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82 Enddisc = 1, |
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83 Endarrow = 2, |
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84 Endmask = 0x1F |
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85 }; |
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86 |
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87 #define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<… |
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88 |
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89 typedef enum |
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90 { |
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91 /* Porter-Duff compositing operators */ |
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92 Clear = 0, |
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93 |
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94 SinD = 8, |
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95 DinS = 4, |
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96 SoutD = 2, |
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97 DoutS = 1, |
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98 |
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99 S = SinD|SoutD, |
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100 SoverD = SinD|SoutD|DoutS, |
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101 SatopD = SinD|DoutS, |
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102 SxorD = SoutD|DoutS, |
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103 |
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104 D = DinS|DoutS, |
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105 DoverS = DinS|DoutS|SoutD, |
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106 DatopS = DinS|SoutD, |
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107 DxorS = DoutS|SoutD, /* == SxorD */ |
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108 |
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109 Ncomp = 12 |
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110 } Drawop; |
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111 |
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112 /* |
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113 * image channel descriptors |
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114 */ |
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115 enum { |
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116 CRed = 0, |
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117 CGreen, |
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118 CBlue, |
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119 CGrey, |
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120 CAlpha, |
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121 CMap, |
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122 CIgnore, |
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123 NChan |
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124 }; |
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125 |
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126 #define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15)) |
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127 #define CHAN1(a,b) __DC(a,b) |
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128 #define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d))) |
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129 #define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f… |
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130 #define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8… |
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131 |
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132 #define NBITS(c) ((c)&15) |
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133 #define TYPE(c) (((c)>>4)&15) |
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134 |
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135 enum { |
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136 GREY1 = CHAN1(CGrey, 1), |
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137 GREY2 = CHAN1(CGrey, 2), |
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138 GREY4 = CHAN1(CGrey, 4), |
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139 GREY8 = CHAN1(CGrey, 8), |
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140 CMAP8 = CHAN1(CMap, 8), |
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141 RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5), |
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142 RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5), |
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143 RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8), |
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144 BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8), |
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145 RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8), |
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146 ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), … |
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147 ABGR32 = CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8), |
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148 XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8), |
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149 XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8) |
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150 }; |
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151 |
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152 extern char* chantostr(char*, u32int); |
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153 extern u32int strtochan(char*); |
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154 extern int chantodepth(u32int); |
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155 |
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156 struct Point |
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157 { |
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158 int x; |
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159 int y; |
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160 }; |
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161 |
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162 struct Rectangle |
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163 { |
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164 Point min; |
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165 Point max; |
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166 }; |
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167 |
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168 typedef void (*Reffn)(Image*, Rectangle, void*); |
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169 |
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170 struct Screen |
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171 { |
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172 Display *display; /* display holding data */ |
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173 int id; /* id of system-held Screen */ |
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174 Image *image; /* unused; for reference onl… |
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175 Image *fill; /* color to paint behind wind… |
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176 }; |
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177 |
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178 struct Display |
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179 { |
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180 QLock qlock; |
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181 int locking; /*program is using lockdispla… |
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182 int dirno; |
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183 int imageid; |
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184 int local; |
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185 void (*error)(Display*, char*); |
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186 char *devdir; |
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187 char *windir; |
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188 char oldlabel[64]; |
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189 u32int dataqid; |
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190 Image *image; |
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191 Image *white; |
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192 Image *black; |
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193 Image *opaque; |
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194 Image *transparent; |
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195 uchar *buf; |
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196 int bufsize; |
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197 uchar *bufp; |
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198 uchar *obuf; |
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199 int obufsize; |
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200 uchar *obufp; |
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201 Font *defaultfont; |
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202 Image *windows; |
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203 Image *screenimage; |
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204 int _isnewdisplay; |
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205 struct Mux *mux; |
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206 int srvfd; |
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207 int dpi; |
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208 |
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209 Font *firstfont; |
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210 Font *lastfont; |
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211 }; |
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212 |
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213 struct Image |
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214 { |
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215 Display *display; /* display holding data … |
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216 int id; /* id of system-held Image… |
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217 Rectangle r; /* rectangle in data area, lo… |
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218 Rectangle clipr; /* clipping region */ |
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219 int depth; /* number of bits per p… |
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220 u32int chan; |
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221 int repl; /* flag: data replicates… |
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222 Screen *screen; /* 0 if not a window */ |
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223 Image *next; /* next in list of windows */ |
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224 }; |
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225 |
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226 struct RGB |
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227 { |
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228 u32int red; |
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229 u32int green; |
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230 u32int blue; |
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231 }; |
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232 |
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233 /* |
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234 * Subfonts |
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235 * |
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236 * given char c, Subfont *f, Fontchar *i, and Point p, one says |
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237 * i = f->info+c; |
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238 * void(b, Rect(p.x+i->left, p.y+i->top, |
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239 * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom), |
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240 * color, f->bits, Pt(i->x, i->top)); |
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241 * p.x += i->width; |
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242 * to draw characters in the specified color (itself an Image) in Image … |
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243 */ |
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244 |
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245 struct Fontchar |
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246 { |
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247 int x; /* left edge of bits */ |
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248 uchar top; /* first non-zero scan-… |
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249 uchar bottom; /* last non-zero sca… |
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250 char left; /* offset of baseline */ |
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251 uchar width; /* width of baseline … |
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252 }; |
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253 |
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254 struct Subfont |
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255 { |
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256 char *name; |
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257 short n; /* number of chars in fon… |
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258 uchar height; /* height of image */ |
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259 char ascent; /* top of image to ba… |
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260 Fontchar *info; /* n+1 character descript… |
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261 Image *bits; /* of font */ |
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262 int ref; |
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263 }; |
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264 |
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265 enum |
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266 { |
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267 /* starting values */ |
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268 LOG2NFCACHE = 6, |
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269 NFCACHE = (1<<LOG2NFCACHE), /* #chars cached */ |
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270 NFLOOK = 5, /* #chars to scan in c… |
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271 NFSUBF = 2, /* #subfonts to cache … |
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272 /* max value */ |
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273 MAXFCACHE = 1024+NFLOOK, /* upper limit */ |
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274 MAXSUBF = 50, /* generous upper li… |
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275 /* deltas */ |
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276 DSUBF = 4, |
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277 /* expiry ages */ |
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278 SUBFAGE = 10000, |
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279 CACHEAGE = 10000 |
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280 }; |
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281 |
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282 struct Cachefont |
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283 { |
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284 Rune min; /* lowest rune value to be taken… |
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285 Rune max; /* highest rune value+1 to be ta… |
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286 int offset; /* position in subfont of char… |
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287 char *name; /* stored in f… |
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288 char *subfontname; /* to access su… |
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289 }; |
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290 |
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291 struct Cacheinfo |
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292 { |
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293 int x; /* left edge of bits */ |
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294 uchar width; /* width of baseline … |
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295 schar left; /* offset of baseline … |
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296 Rune value; /* value of character at this … |
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297 ushort age; |
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298 }; |
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299 |
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300 struct Cachesubf |
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301 { |
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302 u32int age; /* for replacement */ |
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303 Cachefont *cf; /* font info that owns us */ |
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304 Subfont *f; /* attached subfont */ |
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305 }; |
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306 |
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307 struct Font |
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308 { |
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309 char *name; |
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310 char *namespec; |
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311 Display *display; |
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312 short height; /* max height of image, inte… |
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313 short ascent; /* top of image to baseline … |
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314 short width; /* widest so far; used in cac… |
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315 int nsub; /* number of subfonts */ |
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316 u32int age; /* increasing counter; used fo… |
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317 int maxdepth; /* maximum depth of all load… |
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318 int ncache; /* size of cache */ |
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319 int nsubf; /* size of subfont list */ |
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320 int scale; /* pixel scaling to apply */ |
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321 Cacheinfo *cache; |
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322 Cachesubf *subf; |
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323 Cachefont **sub; /* as read from file */ |
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324 Image *cacheimage; |
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325 |
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326 /* doubly linked list of fonts known to display */ |
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327 int ondisplaylist; |
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328 Font *next; |
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329 Font *prev; |
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330 |
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331 /* on hi-dpi systems, one of these is set to f and the other is … |
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332 Font *lodpi; |
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333 Font *hidpi; |
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334 }; |
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335 |
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336 #define Dx(r) ((r).max.x-(r).min.x) |
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337 #define Dy(r) ((r).max.y-(r).min.y) |
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338 |
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339 /* |
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340 * Image management |
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341 */ |
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342 extern Image* _allocimage(Image*, Display*, Rectangle, u32int, in… |
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343 extern Image* allocimage(Display*, Rectangle, u32int, int, u32int… |
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344 extern uchar* bufimage(Display*, int); |
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345 extern int bytesperline(Rectangle, int); |
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346 extern void closedisplay(Display*); |
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347 extern void drawerror(Display*, char*); |
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348 extern int flushimage(Display*, int); |
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349 extern int freeimage(Image*); |
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350 extern int _freeimage1(Image*); |
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351 extern int geninitdraw(char*, void(*)(Display*, char*), char*, ch… |
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352 extern int initdraw(void(*)(Display*, char*), char*, char*); |
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353 extern int newwindow(char*); |
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354 extern int loadimage(Image*, Rectangle, uchar*, int); |
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355 extern int cloadimage(Image*, Rectangle, uchar*, int); |
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356 extern int getwindow(Display*, int); |
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357 extern int gengetwindow(Display*, char*, Image**, Screen**, int); |
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358 extern Image* readimage(Display*, int, int); |
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359 extern Image* creadimage(Display*, int, int); |
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360 extern int unloadimage(Image*, Rectangle, uchar*, int); |
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361 extern int wordsperline(Rectangle, int); |
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362 extern int writeimage(int, Image*, int); |
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363 extern Image* namedimage(Display*, char*); |
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364 extern int nameimage(Image*, char*, int); |
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365 extern Image* allocimagemix(Display*, u32int, u32int); |
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366 extern int drawsetlabel(char*); |
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367 extern int scalesize(Display*, int); |
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368 |
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369 /* |
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370 * Colors |
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371 */ |
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372 extern void readcolmap(Display*, RGB*); |
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373 extern void writecolmap(Display*, RGB*); |
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374 extern u32int setalpha(u32int, uchar); |
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375 |
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376 /* |
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377 * Windows |
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378 */ |
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379 extern Screen* allocscreen(Image*, Image*, int); |
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380 extern Image* _allocwindow(Image*, Screen*, Rectangle, int, u32in… |
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381 extern Image* allocwindow(Screen*, Rectangle, int, u32int); |
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382 extern void bottomnwindows(Image**, int); |
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383 extern void bottomwindow(Image*); |
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384 extern int freescreen(Screen*); |
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385 extern Screen* publicscreen(Display*, int, u32int); |
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386 extern void topnwindows(Image**, int); |
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387 extern void topwindow(Image*); |
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388 extern int originwindow(Image*, Point, Point); |
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389 |
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390 /* |
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391 * Geometry |
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392 */ |
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393 extern Point Pt(int, int); |
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394 extern Rectangle Rect(int, int, int, int); |
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395 extern Rectangle Rpt(Point, Point); |
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396 extern Point addpt(Point, Point); |
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397 extern Point subpt(Point, Point); |
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398 extern Point divpt(Point, int); |
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399 extern Point mulpt(Point, int); |
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400 extern int eqpt(Point, Point); |
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401 extern int eqrect(Rectangle, Rectangle); |
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402 extern Rectangle insetrect(Rectangle, int); |
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403 extern Rectangle rectaddpt(Rectangle, Point); |
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404 extern Rectangle rectsubpt(Rectangle, Point); |
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405 extern Rectangle canonrect(Rectangle); |
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406 extern int rectXrect(Rectangle, Rectangle); |
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407 extern int rectinrect(Rectangle, Rectangle); |
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408 extern void combinerect(Rectangle*, Rectangle); |
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409 extern int rectclip(Rectangle*, Rectangle); |
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410 extern int ptinrect(Point, Rectangle); |
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411 extern void replclipr(Image*, int, Rectangle); |
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412 extern int drawreplxy(int, int, int); /* used to b… |
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413 extern Point drawrepl(Rectangle, Point); |
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414 extern int rgb2cmap(int, int, int); |
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415 extern int cmap2rgb(int); |
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416 extern int cmap2rgba(int); |
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417 extern void icossin(int, int*, int*); |
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418 extern void icossin2(int, int, int*, int*); |
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419 |
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420 /* |
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421 * Graphics |
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422 */ |
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423 extern void draw(Image*, Rectangle, Image*, Image*, Point); |
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424 extern void drawop(Image*, Rectangle, Image*, Image*, Point, Draw… |
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425 extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Poi… |
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426 extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, P… |
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427 extern void line(Image*, Point, Point, int, int, int, Image*, Poi… |
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428 extern void lineop(Image*, Point, Point, int, int, int, Image*, P… |
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429 extern void poly(Image*, Point*, int, int, int, int, Image*, Poin… |
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430 extern void polyop(Image*, Point*, int, int, int, int, Image*, Po… |
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431 extern void fillpoly(Image*, Point*, int, int, Image*, Point); |
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432 extern void fillpolyop(Image*, Point*, int, int, Image*, Point, D… |
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433 extern Point string(Image*, Point, Image*, Point, Font*, char*); |
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434 extern Point stringop(Image*, Point, Image*, Point, Font*, char*,… |
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435 extern Point stringn(Image*, Point, Image*, Point, Font*, char*, … |
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436 extern Point stringnop(Image*, Point, Image*, Point, Font*, char*… |
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437 extern Point runestring(Image*, Point, Image*, Point, Font*, Rune… |
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438 extern Point runestringop(Image*, Point, Image*, Point, Font*, Ru… |
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439 extern Point runestringn(Image*, Point, Image*, Point, Font*, Run… |
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440 extern Point runestringnop(Image*, Point, Image*, Point, Font*, R… |
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441 extern Point stringbg(Image*, Point, Image*, Point, Font*, char*,… |
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442 extern Point stringbgop(Image*, Point, Image*, Point, Font*, char… |
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443 extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*… |
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444 extern Point stringnbgop(Image*, Point, Image*, Point, Font*, cha… |
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445 extern Point runestringbg(Image*, Point, Image*, Point, Font*, Ru… |
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446 extern Point runestringbgop(Image*, Point, Image*, Point, Font*, … |
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447 extern Point runestringnbg(Image*, Point, Image*, Point, Font*, R… |
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448 extern Point runestringnbgop(Image*, Point, Image*, Point, Font*,… |
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449 extern Point _string(Image*, Point, Image*, Point, Font*, char*, … |
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450 extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*… |
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451 extern int bezier(Image*, Point, Point, Point, Point, int… |
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452 extern int bezierop(Image*, Point, Point, Point, Point, i… |
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453 extern int bezspline(Image*, Point*, int, int, int, int, … |
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454 extern int bezsplineop(Image*, Point*, int, int, int, int… |
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455 extern int bezsplinepts(Point*, int, Point**); |
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456 extern int fillbezier(Image*, Point, Point, Point, Point,… |
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457 extern int fillbezierop(Image*, Point, Point, Point, Poin… |
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458 extern int fillbezspline(Image*, Point*, int, int, Image*… |
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459 extern int fillbezsplineop(Image*, Point*, int, int, Imag… |
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460 extern void ellipse(Image*, Point, int, int, int, Image*, Point); |
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461 extern void ellipseop(Image*, Point, int, int, int, Image*, Point… |
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462 extern void fillellipse(Image*, Point, int, int, Image*, Point); |
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463 extern void fillellipseop(Image*, Point, int, int, Image*, Point,… |
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464 extern void arc(Image*, Point, int, int, int, Image*, Point, int,… |
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465 extern void arcop(Image*, Point, int, int, int, Image*, Point, in… |
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466 extern void fillarc(Image*, Point, int, int, Image*, Point, int, … |
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467 extern void fillarcop(Image*, Point, int, int, Image*, Point, int… |
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468 extern void border(Image*, Rectangle, int, Image*, Point); |
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469 extern void borderop(Image*, Rectangle, int, Image*, Point, Drawo… |
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470 |
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471 /* |
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472 * Font management |
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473 */ |
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474 extern Font* openfont(Display*, char*); |
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475 extern int parsefontscale(char*, char**); |
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476 extern Font* buildfont(Display*, char*, char*); |
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477 extern void freefont(Font*); |
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478 extern Font* mkfont(Subfont*, Rune); |
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479 extern int cachechars(Font*, char**, Rune**, ushort*, int, int*, … |
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480 extern void agefont(Font*); |
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481 extern Subfont* allocsubfont(char*, int, int, int, Fontchar*, Ima… |
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482 extern Subfont* lookupsubfont(Display*, char*); |
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483 extern void installsubfont(char*, Subfont*); |
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484 extern void uninstallsubfont(Subfont*); |
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485 extern void freesubfont(Subfont*); |
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486 extern Subfont* readsubfont(Display*, char*, int, int); |
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487 extern Subfont* readsubfonti(Display*, char*, int, Image*, int); |
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488 extern int writesubfont(int, Subfont*); |
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489 extern void _unpackinfo(Fontchar*, uchar*, int); |
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490 extern Point stringsize(Font*, char*); |
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491 extern int stringwidth(Font*, char*); |
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492 extern int stringnwidth(Font*, char*, int); |
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493 extern Point runestringsize(Font*, Rune*); |
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494 extern int runestringwidth(Font*, Rune*); |
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495 extern int runestringnwidth(Font*, Rune*, int); |
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496 extern Point strsubfontwidth(Subfont*, char*); |
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497 extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**); |
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498 extern char* subfontname(char*, char*, int); |
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499 extern Subfont* _getsubfont(Display*, char*); |
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500 extern void lockdisplay(Display*); |
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501 extern void unlockdisplay(Display*); |
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502 extern int drawlsetrefresh(u32int, int, void*, void*); |
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503 extern void loadhidpi(Font*); |
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504 extern void swapfont(Font*, Font**, Font**); |
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505 |
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506 /* |
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507 * Predefined |
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508 */ |
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509 extern Point ZP; |
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510 extern Rectangle ZR; |
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511 |
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512 /* |
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513 * Set up by initdraw() |
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514 */ |
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515 extern Display *display; |
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516 extern Font *font; |
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517 extern Image *screen; |
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518 extern Screen *_screen; |
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519 extern int drawmousemask; /* set bits to disable receiving… |
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520 extern int _cursorfd; |
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521 extern int _drawdebug; /* set to 1 to see errors fr… |
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522 extern void _setdrawop(Display*, Drawop); |
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523 extern Display *_initdisplay(void(*)(Display*,char*), char… |
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524 |
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525 extern void needdisplay(void); /* call instead of initdraw… |
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526 |
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527 #define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8)) |
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528 #define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)… |
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529 #define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>8)) |
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530 #define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2… |
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531 |
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532 /* |
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533 * Compressed image file parameters and helper routines |
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534 */ |
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535 #define NMATCH 3 /* shortest match possible… |
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536 #define NRUN (NMATCH+31) /* longest match possible … |
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537 #define NMEM 1024 /* window size */ |
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538 #define NDUMP 128 /* maximum length of dump… |
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539 #define NCBLOCK 6000 /* size of compressed … |
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540 extern void _twiddlecompressed(uchar*, int); |
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541 extern int _compblocksize(Rectangle, int); |
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542 |
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543 /* XXX backwards helps; should go */ |
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544 extern u32int drawld2chan[]; |
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545 extern void drawsetdebug(int); |
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546 |
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547 /* |
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548 * Snarf buffer |
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549 */ |
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550 enum |
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551 { |
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552 SnarfSize = 64*1024 |
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553 }; |
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554 char *getsnarf(void); |
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555 void putsnarf(char*); |
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556 |
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557 void drawtopwindow(void); |
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558 void drawresizewindow(Rectangle); |
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559 extern char *winsize; |
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560 |
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561 int mousescrollsize(int); |
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562 |
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563 /* |
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564 * RPC interface to draw server. |
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565 */ |
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566 struct Mouse; |
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567 struct Cursor; |
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568 struct Cursor2; |
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569 int _displaybouncemouse(Display *d, struct Mouse *m); |
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570 int _displayconnect(Display *d); |
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571 int _displaycursor(Display *d, struct Cursor *c, struct C… |
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572 int _displayinit(Display *d, char *label, char *winsize); |
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573 int _displaylabel(Display *d, char *label); |
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574 int _displaymoveto(Display *d, Point p); |
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575 int _displaymux(Display *d); |
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576 int _displayrddraw(Display *d, void *v, int n); |
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577 int _displayrdkbd(Display *d, Rune *r); |
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578 int _displayrdmouse(Display *d, struct Mouse *m, int *res… |
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579 char* _displayrdsnarf(Display *d); |
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580 int _displaywrdraw(Display *d, void *v, int n); |
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581 int _displaywrsnarf(Display *d, char *snarf); |
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582 int _displaytop(Display *d); |
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583 int _displayresize(Display *d, Rectangle rect); |
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584 |
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585 #if defined(__cplusplus) |
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586 } |
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587 #endif |
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588 #endif |
