Mercurial > MadButterfly

annotate src/img_ldr.c @ 364:a373b4743e63

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Add file dialog to add a new scene file into the project.
author wycc
date Sat, 14 Mar 2009 15:35:51 +0800
parents 3e84458968ec
children 16116d84bc5e
rev   line source
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
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1 #include <stdio.h>
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2 #include <string.h>
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3 #include <cairo.h>
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4 #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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5 #include "mb_paint.h"
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6 #include "mb_img_ldr.h"
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7
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8 /*! \brief Simple image loader.
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9 *
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10 */
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11 struct _simple_mb_img_ldr {
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12 mb_img_ldr_t ldr;
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13 const char *repo; /*!< \brief The directory of repository. */
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14 };
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15 typedef struct _simple_mb_img_ldr simple_mb_img_ldr_t;
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16
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17 struct _simple_mb_img_data {
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18 mb_img_data_t img;
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19 cairo_surface_t *surf;
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20 };
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21 typedef struct _simple_mb_img_data simple_mb_img_data_t;
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22
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23 static void simple_mb_img_ldr_img_free(mb_img_data_t *img);
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24
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25 static
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26 mb_img_data_t *simple_mb_img_ldr_load(mb_img_ldr_t *ldr, const char *img_id) {
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27 simple_mb_img_ldr_t *sldr = (simple_mb_img_ldr_t *)ldr;
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28 simple_mb_img_data_t *img;
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29 cairo_surface_t *surf;
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30 char *fname;
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31 cairo_format_t fmt;
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32 int sz;
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33
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34 sz = strlen(sldr->repo);
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35 sz += strlen(img_id);
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36 fname = (char *)malloc(sz + 2);
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37 strcpy(fname, sldr->repo);
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38 strcat(fname, img_id);
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39
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40 surf = cairo_image_surface_create_from_png(fname);
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41 if(surf == NULL)
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42 return NULL;
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43
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44 img = O_ALLOC(simple_mb_img_data_t);
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45 if(img == NULL) {
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46 cairo_surface_destroy(surf);
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47 return NULL;
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48 }
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49 img->img.content = cairo_image_surface_get_data(surf);
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50 img->img.w = cairo_image_surface_get_width(surf);
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51 img->img.h = cairo_image_surface_get_height(surf);
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52 img->img.stride = cairo_image_surface_get_stride(surf);
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53 fmt = cairo_image_surface_get_format(surf);
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54 switch(fmt) {
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55 case CAIRO_FORMAT_ARGB32:
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56 img->img.fmt = MB_IFMT_ARGB32;
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57 break;
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58
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59 case CAIRO_FORMAT_RGB24:
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60 img->img.fmt = MB_IFMT_RGB24;
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61 break;
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62
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63 case CAIRO_FORMAT_A8:
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64 img->img.fmt = MB_IFMT_A8;
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65 break;
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66
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67 case CAIRO_FORMAT_A1:
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68 img->img.fmt = MB_IFMT_A1;
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69 break;
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70
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71 default:
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72 cairo_surface_destroy(surf);
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73 free(img);
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74 return NULL;
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75 }
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76 img->img.free = simple_mb_img_ldr_img_free;
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77 img->surf = surf;
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78
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79 return (mb_img_data_t *)img;
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80 }
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81
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82 static
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83 void simple_mb_img_ldr_img_free(mb_img_data_t *img) {
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84 simple_mb_img_data_t *simg = (simple_mb_img_data_t *)img;
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85 cairo_surface_destroy((cairo_surface_t *)simg->surf);
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86 free(img);
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87 }
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88
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89 static
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90 void simple_mb_img_ldr_free(mb_img_ldr_t *ldr) {
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91 simple_mb_img_ldr_t *defldr = (simple_mb_img_ldr_t *)ldr;
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92
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93 free((void *)defldr->repo);
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94 }
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95
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96 mb_img_ldr_t *simple_mb_img_ldr_new(const char *img_repository) {
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97 simple_mb_img_ldr_t *ldr;
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98 int sz;
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99
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100 if(img_repository == NULL)
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101 return NULL;
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102
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103 ldr = O_ALLOC(simple_mb_img_ldr_t);
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104 if(ldr == NULL)
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105 return NULL;
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106
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107 /*
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108 * Copy and formalize path of image repository.
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109 */
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110 sz = strlen(img_repository);
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111 ldr->repo = (const char *)malloc(sz + 2);
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112 if(ldr->repo == NULL) {
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113 free(ldr);
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114 return NULL;
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115 }
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116 strcpy((char *)ldr->repo, img_repository);
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b391722bf20e sh_image_t::img_data is managed by paint_image_t.
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117 if(img_repository[sz - 1] != '/' && strlen(img_repository) != 0) {
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118 ((char *)ldr->repo)[sz] = '/';
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119 ((char *)ldr->repo)[sz + 1] = 0;
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120 }
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121
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122 ldr->ldr.load = simple_mb_img_ldr_load;
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123 ldr->ldr.free = simple_mb_img_ldr_free;
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124
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125 return (mb_img_ldr_t *)ldr;
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126 }