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5131 | clevermous | 1 | /*! |
2 | \file Draw_FillRound.c |
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3 | \author Mario Palomo |
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4 | \author Jose M. de la Huerga Fernández |
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5 | \author Pepe González Mora |
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6 | \date 05-2002 |
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7 | |||
8 | This library is free software; you can redistribute it and/or |
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9 | modify it under the terms of the GNU Library General Public |
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10 | License as published by the Free Software Foundation; either |
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11 | version 2 of the License, or (at your option) any later version. |
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12 | |||
13 | This library is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | Library General Public License for more details. |
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17 | |||
18 | You should have received a copy of the GNU Library General Public |
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19 | License along with this library; if not, write to the Free Foundation, |
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20 | Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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21 | */ |
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22 | |||
23 | #if SDL_DRAW_BPP == 1 |
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24 | #define SDL_DRAW_PUTPIXEL \ |
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25 | memset(p0, color, X2center - Xcenter + 2*corner+1); \ |
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26 | memset(p1, color, X2center - Xcenter + 2*corner+1); \ |
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27 | p0 = ((Uint8*)super->pixels+(Y2center+corner)*super->pitch+(Xcenter-x)); \ |
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28 | p1 = ((Uint8*)super->pixels+(Ycenter-corner)*super->pitch +(Xcenter-x)); \ |
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29 | memset(p0, color, X2center - Xcenter + 2*x+1); \ |
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30 | memset(p1, color, X2center - Xcenter + 2*x+1); |
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31 | |||
32 | #elif SDL_DRAW_BPP == 2 |
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33 | #define SDL_DRAW_PUTPIXEL \ |
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34 | i = X2center - Xcenter + 2*corner+1; \ |
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35 | switch( i % 4 ) { \ |
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36 | do{ \ |
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37 | case 0: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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38 | p0+=2; p1+=2; \ |
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39 | case 3: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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40 | p0+=2; p1+=2; \ |
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41 | case 2: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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42 | p0+=2; p1+=2; \ |
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43 | case 1: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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44 | p0+=2; p1+=2; \ |
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45 | }while( (i-=4) > 0 ); \ |
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46 | } \ |
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47 | p0 = ((Uint8*)super->pixels+(Y2center+corner)*super->pitch+(Xcenter-x)*2); \ |
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48 | p1 = ((Uint8*)super->pixels+(Ycenter-corner)*super->pitch +(Xcenter-x)*2); \ |
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49 | i = X2center - Xcenter + 2*x+1; \ |
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50 | switch( i % 4 ) { \ |
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51 | do{ \ |
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52 | case 0: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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53 | p0+=2; p1+=2; \ |
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54 | case 3: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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55 | p0+=2; p1+=2; \ |
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56 | case 2: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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57 | p0+=2; p1+=2; \ |
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58 | case 1: *(Uint16*)p0 = color; *(Uint16*)p1 = color; \ |
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59 | p0+=2; p1+=2; \ |
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60 | }while( (i-=4) > 0 ); \ |
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61 | } |
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62 | |||
63 | #elif SDL_DRAW_BPP == 3 |
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64 | #define SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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65 | if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ |
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66 | p0[0] = colorbyte2; \ |
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67 | p0[1] = colorbyte1; \ |
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68 | p0[2] = colorbyte0; \ |
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69 | p1[0] = colorbyte2; \ |
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70 | p1[1] = colorbyte1; \ |
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71 | p1[2] = colorbyte0; \ |
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72 | } else { \ |
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73 | p0[0] = colorbyte0; \ |
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74 | p0[1] = colorbyte1; \ |
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75 | p0[2] = colorbyte2; \ |
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76 | p1[0] = colorbyte0; \ |
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77 | p1[1] = colorbyte1; \ |
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78 | p1[2] = colorbyte2; \ |
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79 | } |
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80 | |||
81 | #define SDL_DRAW_PUTPIXEL \ |
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82 | i = X2center - Xcenter + 2*corner+1; \ |
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83 | switch( i % 4 ) { \ |
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84 | do{ \ |
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85 | case 0: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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86 | p0+=3; p1+=3; \ |
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87 | case 3: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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88 | p0+=3; p1+=3; \ |
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89 | case 2: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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90 | p0+=3; p1+=3; \ |
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91 | case 1: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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92 | p0+=3; p1+=3; \ |
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93 | }while( (i-=4) > 0 ); \ |
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94 | } \ |
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95 | p0 = ((Uint8*)super->pixels+(Y2center+corner)*super->pitch+(Xcenter-x)*3); \ |
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96 | p1 = ((Uint8*)super->pixels+(Ycenter-corner)*super->pitch +(Xcenter-x)*3); \ |
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97 | i = X2center - Xcenter + 2*x+1; \ |
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98 | switch( i % 4 ) { \ |
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99 | do{ \ |
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100 | case 0: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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101 | p0+=3; p1+=3; \ |
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102 | case 3: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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103 | p0+=3; p1+=3; \ |
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104 | case 2: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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105 | p0+=3; p1+=3; \ |
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106 | case 1: SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
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107 | p0+=3; p1+=3; \ |
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108 | }while( (i-=4) > 0 ); \ |
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109 | } |
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110 | |||
111 | |||
112 | #elif SDL_DRAW_BPP == 4 |
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113 | |||
114 | #ifdef __linux__ |
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115 | #define SDL_DRAW_WMEMSET_START \ |
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116 | if (sizeof(wchar_t) == sizeof(Uint32)) { \ |
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117 | wmemset((wchar_t*)p0, color, X2center - Xcenter + 2*corner+1); \ |
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118 | wmemset((wchar_t*)p1, color, X2center - Xcenter + 2*corner+1); \ |
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119 | p0 = ((Uint8*)super->pixels+(Y2center+corner)*super->pitch+(Xcenter-x)*4); \ |
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120 | p1 = ((Uint8*)super->pixels+(Ycenter-corner)*super->pitch +(Xcenter-x)*4); \ |
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121 | wmemset((wchar_t*)p0, color, X2center - Xcenter + 2*x+1); \ |
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122 | wmemset((wchar_t*)p1, color, X2center - Xcenter + 2*x+1); \ |
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123 | } else { |
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124 | #define SDL_DRAW_WMEMSET_END } |
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125 | #else |
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126 | #define SDL_DRAW_WMEMSET_START |
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127 | #define SDL_DRAW_WMEMSET_END |
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128 | #endif |
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129 | |||
130 | #define SDL_DRAW_PUTPIXEL \ |
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131 | SDL_DRAW_WMEMSET_START \ |
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132 | i = X2center - Xcenter + 2*corner+1; \ |
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133 | switch( i % 4 ) { \ |
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134 | do{ \ |
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135 | case 0: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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136 | p0+=4; p1+=4; \ |
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137 | case 3: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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138 | p0+=4; p1+=4; \ |
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139 | case 2: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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140 | p0+=4; p1+=4; \ |
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141 | case 1: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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142 | p0+=4; p1+=4; \ |
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143 | }while( (i-=4) > 0 ); \ |
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144 | } \ |
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145 | p0 = ((Uint8*)super->pixels+(Y2center+corner)*super->pitch+(Xcenter-x)*4); \ |
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146 | p1 = ((Uint8*)super->pixels+(Ycenter-corner)*super->pitch +(Xcenter-x)*4); \ |
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147 | i = X2center - Xcenter + 2*x+1; \ |
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148 | switch( i % 4 ) { \ |
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149 | do{ \ |
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150 | case 0: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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151 | p0+=4; p1+=4; \ |
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152 | case 3: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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153 | p0+=4; p1+=4; \ |
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154 | case 2: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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155 | p0+=4; p1+=4; \ |
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156 | case 1: *(Uint32*)p0 = color; *(Uint32*)p1 = color; \ |
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157 | p0+=4; p1+=4; \ |
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158 | }while( (i-=4) > 0 ); \ |
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159 | } \ |
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160 | SDL_DRAW_WMEMSET_END |
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161 | |||
162 | #endif /*SDL_DRAW_BPP*/ |
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163 | |||
164 | |||
165 | void SDL_DRAWFUNCTION(SDL_Surface *super, |
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166 | Sint16 x0,Sint16 y0, Uint16 w,Uint16 h, |
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167 | Uint16 corner, Uint32 color) |
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168 | { |
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169 | #if SDL_DRAW_BPP == 3 |
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170 | Uint8 colorbyte0 = (Uint8) (color & 0xff); |
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171 | Uint8 colorbyte1 = (Uint8) ((color >> 8) & 0xff); |
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172 | Uint8 colorbyte2 = (Uint8) ((color >> 16) & 0xff); |
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173 | #endif |
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174 | |||
175 | register Uint8 *p0; |
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176 | register Uint8 *p1; |
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177 | #if SDL_DRAW_BPP != 1 |
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178 | register Sint16 i; |
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179 | #endif |
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180 | Sint16 dx, dy; |
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181 | |||
182 | Sint16 Xcenter, Ycenter, X2center, Y2center; |
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183 | |||
184 | Sint16 x = 0; |
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185 | Sint16 rightInc = 6; |
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186 | Sint16 d, diagonalInc; |
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187 | |||
188 | SDL_Rect r; |
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189 | |||
190 | |||
191 | if (w==0 || h==0) return; |
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192 | |||
193 | /*TODO: We can do better :-)*/ |
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194 | if (corner!=0) { |
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195 | d = w |
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196 | --corner; |
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197 | if (corner!=0 && corner+2 >= d ) { |
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198 | if (corner+2 == d) --corner; |
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199 | else corner = 0; |
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200 | } |
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201 | } |
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202 | |||
203 | d = 3 - (corner<<1); |
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204 | diagonalInc = 10 - (corner<<2); |
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205 | |||
206 | /*Rectangles*/ |
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207 | dx = w - (corner<<1); |
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208 | Xcenter = x0+corner; |
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209 | dy = h - (corner<<1); |
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210 | Ycenter = y0+corner; |
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211 | |||
212 | /*Centers*/ |
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213 | X2center=Xcenter+dx-1; |
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214 | Y2center=Ycenter+dy-1; |
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215 | |||
216 | r.x = x0; r.y = Ycenter; |
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217 | r.w = w; r.h = dy; |
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218 | SDL_FillRect(super, &r, color); |
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219 | |||
220 | while (x < corner) { |
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221 | |||
222 | p0 = ((Uint8*)super->pixels+(Ycenter-x)*super->pitch + |
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223 | (Xcenter-corner)*SDL_DRAW_BPP); |
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224 | p1 = ((Uint8*)super->pixels+(Y2center+x)*super->pitch + |
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225 | (Xcenter-corner)*SDL_DRAW_BPP); |
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226 | |||
227 | SDL_DRAW_PUTPIXEL |
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228 | |||
229 | if (d >= 0) { |
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230 | d += diagonalInc; |
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231 | diagonalInc += 8; |
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232 | --corner; |
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233 | } else { |
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234 | d += rightInc; |
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235 | diagonalInc += 4; |
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236 | } |
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237 | rightInc += 4; |
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238 | ++x; |
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239 | }/*while*/ |
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240 | |||
241 | }/*Draw_FillRound*/ |
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242 | |||
243 | |||
244 | #undef SDL_DRAW_PUTPIXEL |
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245 | |||
246 | #undef SDL_DRAW_WMEMSET_START |
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247 | #undef SDL_DRAW_WMEMSET_END>1); |
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248 |