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annotate tools/libgutil.c @ 2298:b5abfff07ca9

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Add new DMGrowBuf helper functions dmGrowBufCopyOffsSize() and dmGrowBufConstCopyOffsSize().
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 04 Jul 2019 10:54:16 +0300
parents ef08af6887b7
children 6d12670e0248
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Common graphics utility functions for tools
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3 * Programmed and designed by Matti 'ccr' Hamalainen
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4 * (C) Copyright 2012-2015 Tecnic Software productions (TNSP)
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5 *
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6 * Please read file 'COPYING' for information on license and distribution.
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7 */
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8 #include "libgutil.h"
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9
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10
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11 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 col)
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12 {
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13 SDL_Rect rc;
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14 rc.x = x0;
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15 rc.y = y0;
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16 rc.w = x1 - x0 + 1;
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17 rc.h = y1 - y0 + 1;
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18 SDL_FillRect(screen, &rc, col);
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19 }
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20
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21
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22 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col)
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23 {
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24 const int bpp = screen->format->BytesPerPixel,
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25 cx0 = screen->clip_rect.x, cy0 = screen->clip_rect.y,
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26 cx1 = screen->clip_rect.x + screen->clip_rect.w - 1,
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27 cy1 = screen->clip_rect.y + screen->clip_rect.h - 1;
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28
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29 DM_SWAP(int, x0, x1);
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30 if (yc < cy0|| yc > cy1 || x1 < cx0 || x0 > cx1) return;
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31 if (x0 < cx0) x0 = cx0;
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32 if (x1 > cx1) x1 = cx1;
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33
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34 int x = x1 - x0 + 1;
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35 Uint8 *pix = ((Uint8 *) screen->pixels) + yc * screen->pitch + (x0 * bpp);
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36 switch (screen->format->BitsPerPixel)
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37 {
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38 case 8:
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39 while (x--)
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40 *pix++ = col;
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41 break;
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42
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43 case 32:
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44 {
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45 Uint32 *p = (Uint32 *) pix;
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46 while (x--)
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47 *p++ = col;
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48 }
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49 break;
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50 }
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51 }
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52
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53
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54 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col)
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55 {
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56 const int bpp = screen->format->BytesPerPixel,
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57 pitch = screen->pitch / bpp,
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58 cx0 = screen->clip_rect.x, cy0 = screen->clip_rect.y,
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59 cx1 = screen->clip_rect.x + screen->clip_rect.w - 1,
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60 cy1 = screen->clip_rect.y + screen->clip_rect.h - 1;
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61
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62 DM_SWAP(int, y0, y1);
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63 if (xc < cx0 || xc > cx1 || y1 < cy0 || y0 > cy1) return;
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64 if (y0 < cy0) y0 = cy0;
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65 if (y1 > cy1) y1 = cy1;
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66
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67 int y = y1 - y0 + 1;
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68 Uint8 *pix = ((Uint8 *) screen->pixels) + y0 * screen->pitch + (xc * bpp);
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69 switch (screen->format->BitsPerPixel)
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70 {
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71 case 8:
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72 while (y--)
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73 {
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74 *pix = col;
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75 pix += pitch;
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76 }
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77 break;
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78
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79 case 32:
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80 {
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81 Uint32 *p = (Uint32 *) pix;
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82 while (y--)
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83 {
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84 *p = col;
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85 p += pitch;
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86 }
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87 }
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88 break;
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89 }
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90 }
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91
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92
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93 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 ucol, Uint32 dcol)
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94 {
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95 dmDrawHLine(screen, x0 , x1 - 1, y0, ucol);
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96 dmDrawHLine(screen, x0 + 1, x1 , y1, dcol);
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97
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98 dmDrawVLine(screen, y0 , y1 - 1, x0, ucol);
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99 dmDrawVLine(screen, y0 + 1, y1 , x1, dcol);
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100 }
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101
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102
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103 void dmFillBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol)
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104 {
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105 SDL_Rect rc;
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106
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107 rc.x = x0 + 1;
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108 rc.y = y0 + 1;
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109 rc.w = x1 - x0 - 1;
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110 rc.h = y1 - y0 - 1;
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111 SDL_FillRect(screen, &rc, bgcol);
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112
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113 dmDrawBox3D(screen, x0, y0, x1, y1, ucol, dcol);
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114 }
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115
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116
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117 void dmDrawBMTextConstQ(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt)
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118 {
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119 const char *ptr = fmt;
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120 DMUnscaledBlitFunc blit = dmGetUnscaledBlitFunc(font->glyphs->format, screen->format, mode);
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121 Uint8 *orig = font->glyphs->pixels;
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122 SDL_Surface surf;
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123
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124 memcpy(&surf, font->glyphs, sizeof(SDL_Surface));
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125
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126 while (*ptr)
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127 {
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128 int ch = toupper(*ptr++);
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129
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130 if (ch == '_')
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131 {
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132 xc += 4;
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133 continue;
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134 }
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135
1957
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136 if (ch < font->maxglyph && ch != ' ')
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137 {
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138 DMBitmapGlyph *glyph = &font->glyphMap[ch];
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139
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140 if (glyph->index >= 0)
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141 {
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142 surf.pixels = orig + glyph->index * font->gsize;
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143 surf.w = glyph->width;
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144 surf.h = glyph->height;
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145
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146 blit(&surf, xc, yc, screen);
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147 }
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148 }
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149 xc += font->width;
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150 }
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151 }
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152
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153
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154 void dmDrawBMTextVAQ(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt, va_list ap)
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155 {
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156 char tmp[512];
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157 vsnprintf(tmp, sizeof(tmp), fmt, ap);
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158 dmDrawBMTextConstQ(screen, font, mode, xc, yc, tmp);
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159 }
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160
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161
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162 void dmDrawBMTextQ(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt, ...)
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163 {
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164 va_list ap;
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165
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166 va_start(ap, fmt);
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167 dmDrawBMTextVAQ(screen, font, mode, xc, yc, fmt, ap);
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168 va_end(ap);
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169 }