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annotate src/img_ldr.c @ 539:ce11e889ea4e Android_Skia

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Simplify dirty area for coords that should be totally redraw
author Thinker K.F. Li <thinker@branda.to>
date Mon, 24 May 2010 16:27:25 +0800
parents a417fd980228
children 8863d23cea4b 818e870e1eb5
rev   line source
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50d253d0fcba Simple image loader and image shape.
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1 #include <stdio.h>
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2 #include <string.h>
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3 #include "mb_graph_engine.h"
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4 #include "mb_tools.h"
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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 mbe_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 mbe_surface_t *surf;
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30 char *fname;
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31 int sz;
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32
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33 sz = strlen(sldr->repo);
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34 sz += strlen(img_id);
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35 fname = (char *)malloc(sz + 2);
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36 strcpy(fname, sldr->repo);
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37 strcat(fname, img_id);
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38
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39 surf = mbe_image_surface_create_from_png(fname);
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40 if(surf == NULL)
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41 return NULL;
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42
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43 img = O_ALLOC(simple_mb_img_data_t);
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44 if(img == NULL) {
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45 mbe_surface_destroy(surf);
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46 return NULL;
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47 }
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48 img->img.content = mbe_image_surface_get_data(surf);
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49 img->img.w = mbe_image_surface_get_width(surf);
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50 img->img.h = mbe_image_surface_get_height(surf);
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51 img->img.stride = mbe_image_surface_get_stride(surf);
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52 img->img.fmt = mbe_image_surface_get_format(surf);
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53 img->img.free = simple_mb_img_ldr_img_free;
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54 img->surf = surf;
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55
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56 return (mb_img_data_t *)img;
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57 }
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58
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59 static
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60 void simple_mb_img_ldr_img_free(mb_img_data_t *img) {
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61 simple_mb_img_data_t *simg = (simple_mb_img_data_t *)img;
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62 mbe_surface_destroy((mbe_surface_t *)simg->surf);
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63 free(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_free(mb_img_ldr_t *ldr) {
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68 simple_mb_img_ldr_t *defldr = (simple_mb_img_ldr_t *)ldr;
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69
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70 free((void *)defldr->repo);
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71 }
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72
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73 mb_img_ldr_t *simple_mb_img_ldr_new(const char *img_repository) {
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74 simple_mb_img_ldr_t *ldr;
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75 int sz;
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76
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77 if(img_repository == NULL)
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78 return NULL;
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79
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80 ldr = O_ALLOC(simple_mb_img_ldr_t);
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81 if(ldr == NULL)
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82 return NULL;
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83
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84 /*
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85 * Copy and formalize path of image repository.
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86 */
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87 sz = strlen(img_repository);
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88 ldr->repo = (const char *)malloc(sz + 2);
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89 if(ldr->repo == NULL) {
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90 free(ldr);
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91 return NULL;
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92 }
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93 strcpy((char *)ldr->repo, img_repository);
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94 if(img_repository[sz - 1] != '/' && strlen(img_repository) != 0) {
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95 ((char *)ldr->repo)[sz] = '/';
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96 ((char *)ldr->repo)[sz + 1] = 0;
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97 }
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98
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99 ldr->ldr.load = simple_mb_img_ldr_load;
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100 ldr->ldr.free = simple_mb_img_ldr_free;
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101
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102 return (mb_img_ldr_t *)ldr;
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103 }