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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 10 | reyssat | 1 | #include <stdio.h> |
| 2 | #include "gd.h" |
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| 3 | #include "gdfontg.h" |
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| 4 | #include "gdfonts.h" |
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| 5 | |||
| 6 | int main(void) |
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| 7 | { |
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| 8 | /* Input and output files */ |
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| 9 | FILE *in; |
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| 10 | FILE *out; |
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| 11 | |||
| 12 | /* Input and output images */ |
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| 13 | gdImagePtr im_in, im_out; |
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| 14 | |||
| 15 | /* Brush image */ |
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| 16 | gdImagePtr brush; |
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| 17 | |||
| 18 | /* Color indexes */ |
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| 19 | int white; |
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| 20 | int blue; |
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| 21 | int red; |
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| 22 | int green; |
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| 23 | |||
| 24 | /* Points for polygon */ |
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| 25 | gdPoint points[3]; |
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| 26 | |||
| 27 | /* Create output image, 128 by 128 pixels. */ |
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| 28 | im_out = gdImageCreate(128, 128); |
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| 29 | |||
| 30 | /* First color allocated is background. */ |
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| 31 | white = gdImageColorAllocate(im_out, 255, 255, 255); |
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| 32 | |||
| 33 | /* Set transparent color. */ |
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| 34 | gdImageColorTransparent(im_out, white); |
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| 35 | |||
| 36 | /* Try to load demoin.gif and paste part of it into the |
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| 37 | output image. */ |
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| 38 | |||
| 39 | in = fopen("demoin.gif", "rb"); |
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| 40 | if (!in) { |
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| 41 | fprintf(stderr, "Can't load source image; this demo\n"); |
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| 42 | fprintf(stderr, "is much more impressive if demoin.gif\n"); |
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| 43 | fprintf(stderr, "is available.\n"); |
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| 44 | im_in = 0; |
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| 45 | } else { |
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| 46 | im_in = gdImageCreateFromGif(in); |
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| 47 | fclose(in); |
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| 48 | /* Now copy, and magnify as we do so */ |
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| 49 | gdImageCopyResized(im_out, im_in, |
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| 50 | 16, 16, 0, 0, 96, 96, 127, 127); |
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| 51 | } |
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| 52 | red = gdImageColorAllocate(im_out, 255, 0, 0); |
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| 53 | green = gdImageColorAllocate(im_out, 0, 255, 0); |
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| 54 | blue = gdImageColorAllocate(im_out, 0, 0, 255); |
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| 55 | /* Rectangle */ |
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| 56 | gdImageLine(im_out, 8, 8, 120, 8, green); |
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| 57 | gdImageLine(im_out, 120, 8, 120, 120, green); |
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| 58 | gdImageLine(im_out, 120, 120, 8, 120, green); |
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| 59 | gdImageLine(im_out, 8, 120, 8, 8, green); |
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| 60 | /* Circle */ |
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| 61 | gdImageArc(im_out, 64, 64, 30, 10, 0, 360, blue); |
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| 62 | /* Arc */ |
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| 63 | gdImageArc(im_out, 64, 64, 20, 20, 45, 135, blue); |
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| 64 | /* Flood fill */ |
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| 65 | gdImageFill(im_out, 4, 4, blue); |
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| 66 | /* Polygon */ |
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| 67 | points[0].x = 32; |
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| 68 | points[0].y = 0; |
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| 69 | points[1].x = 0; |
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| 70 | points[1].y = 64; |
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| 71 | points[2].x = 64; |
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| 72 | points[2].y = 64; |
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| 73 | gdImageFilledPolygon(im_out, points, 3, green); |
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| 74 | /* Brush. A fairly wild example also involving a line style! */ |
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| 75 | if (im_in) { |
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| 76 | int style[8]; |
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| 77 | brush = gdImageCreate(8, 8); |
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| 78 | gdImageCopyResized(brush, im_in, |
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| 79 | 0, 0, 0, 0, |
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| 80 | gdImageSX(brush), gdImageSY(brush), |
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| 81 | gdImageSX(im_in), gdImageSY(im_in)); |
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| 82 | gdImageSetBrush(im_out, brush); |
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| 83 | /* With a style, so they won't overprint each other. |
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| 84 | Normally, they would, yielding a fat-brush effect. */ |
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| 85 | style[0] = 0; |
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| 86 | style[1] = 0; |
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| 87 | style[2] = 0; |
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| 88 | style[3] = 0; |
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| 89 | style[4] = 0; |
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| 90 | style[5] = 0; |
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| 91 | style[6] = 0; |
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| 92 | style[7] = 1; |
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| 93 | gdImageSetStyle(im_out, style, 8); |
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| 94 | /* Draw the styled, brushed line */ |
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| 95 | gdImageLine(im_out, 0, 127, 127, 0, gdStyledBrushed); |
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| 96 | } |
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| 97 | /* Text */ |
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| 98 | gdImageString(im_out, gdFontGiant, 16, 16, "hi", red); |
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| 99 | gdImageStringUp(im_out, gdFontSmall, 32, 32, "hi", red); |
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| 100 | /* Make output image interlaced (allows "fade in" in some viewers, |
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| 101 | and in the latest web browsers) */ |
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| 102 | gdImageInterlace(im_out, 1); |
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| 103 | out = fopen("demoout.gif", "wb"); |
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| 104 | /* Write GIF */ |
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| 105 | gdImageGif(im_out, out); |
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| 106 | fclose(out); |
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| 107 | gdImageDestroy(im_out); |
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| 108 | if (im_in) { |
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| 109 | gdImageDestroy(im_in); |
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| 110 | } |
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| 111 | return 0; |
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| 112 | } |
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| 113 |