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annotate src/img_ldr.c @ 615:0f0abc48e10a openvg

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mbe_new_path() for OpenVG
author Thinker K.F. Li <thinker@branda.to>
date Thu, 08 Jul 2010 11:29:58 +0800
parents 8863d23cea4b
children 7b4e80ab671a
rev   line source
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1 #include <stdio.h>
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2 #include <string.h>
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3 #include <Imlib2.h>
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4 #include "mb_graph_engine.h"
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5 #include "mb_tools.h"
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3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
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6 #include "mb_paint.h"
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7 #include "mb_img_ldr.h"
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8
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9 /*! \brief Simple image loader.
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10 *
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11 */
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12 struct _simple_mb_img_ldr {
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13 mb_img_ldr_t ldr;
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14 const char *repo; /*!< \brief The directory of repository. */
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15 };
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16 typedef struct _simple_mb_img_ldr simple_mb_img_ldr_t;
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17
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18 struct _simple_mb_img_data {
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19 mb_img_data_t img;
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20 Imlib_Image img_hdl;
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21 };
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22 typedef struct _simple_mb_img_data simple_mb_img_data_t;
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23
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24 static void simple_mb_img_ldr_img_free(mb_img_data_t *img);
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26 static
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27 mb_img_data_t *simple_mb_img_ldr_load(mb_img_ldr_t *ldr, const char *img_id) {
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28 simple_mb_img_ldr_t *sldr = (simple_mb_img_ldr_t *)ldr;
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29 simple_mb_img_data_t *img;
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30 Imlib_Image img_hdl;
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31 int w, h;
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32 void *data;
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33 char *fname;
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34 int sz;
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35
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36 sz = strlen(sldr->repo);
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37 sz += strlen(img_id);
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38 fname = (char *)malloc(sz + 2);
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39 strcpy(fname, sldr->repo);
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40 strcat(fname, img_id);
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41
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42 img_hdl = imlib_load_image(fname);
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43 if(!img_hdl)
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44 return NULL;
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45 imlib_context_set_image(img_hdl);
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46 w = imlib_image_get_width();
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47 h = imlib_image_get_height();
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48 data = imlib_image_get_data_for_reading_only();
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49
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50 img = O_ALLOC(simple_mb_img_data_t);
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51 if(img == NULL) {
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52 imlib_free_image();
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53 return NULL;
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54 }
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55 img->img.content = data;
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56 img->img.w = w;
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57 img->img.h = h;
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58 img->img.stride = w * 4;
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59 img->img.fmt = MB_IFMT_ARGB32;
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60 img->img.free = simple_mb_img_ldr_img_free;
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61 img->img_hdl = img_hdl;
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62
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63 return (mb_img_data_t *)img;
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64 }
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65
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66 static
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67 void simple_mb_img_ldr_img_free(mb_img_data_t *img) {
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68 simple_mb_img_data_t *simg = (simple_mb_img_data_t *)img;
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69
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70 imlib_context_set_image(simg->img_hdl);
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71 imlib_free_image();
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72 free(img);
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73 }
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74
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75 static
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76 void simple_mb_img_ldr_free(mb_img_ldr_t *ldr) {
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77 simple_mb_img_ldr_t *defldr = (simple_mb_img_ldr_t *)ldr;
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78
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79 free((void *)defldr->repo);
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80 }
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81
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82 mb_img_ldr_t *simple_mb_img_ldr_new(const char *img_repository) {
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83 simple_mb_img_ldr_t *ldr;
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84 int sz;
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85
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86 if(img_repository == NULL)
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87 return NULL;
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88
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89 ldr = O_ALLOC(simple_mb_img_ldr_t);
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90 if(ldr == NULL)
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91 return NULL;
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92
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93 /*
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94 * Copy and formalize path of image repository.
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95 */
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96 sz = strlen(img_repository);
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97 ldr->repo = (const char *)malloc(sz + 2);
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98 if(ldr->repo == NULL) {
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99 free(ldr);
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100 return NULL;
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101 }
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102 strcpy((char *)ldr->repo, img_repository);
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103 if(img_repository[sz - 1] != '/' && strlen(img_repository) != 0) {
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104 ((char *)ldr->repo)[sz] = '/';
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105 ((char *)ldr->repo)[sz + 1] = 0;
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106 }
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107
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108 ldr->ldr.load = simple_mb_img_ldr_load;
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109 ldr->ldr.free = simple_mb_img_ldr_free;
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110
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111 return (mb_img_ldr_t *)ldr;
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112 }