Mercurial > MadButterfly

annotate include/mb_img_ldr.h @ 776:77b561bb7929

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Implement new algorithm to calculate the origin of the SVG elemnts so that we can implement object resize without changing the position of the object. However, the image does not work here since it does not use the transformation of the group.
author wycc
date Mon, 30 Aug 2010 08:56:44 +0800
parents 43900cae1d49
children 586e50f82c1f
rev   line source
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
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1 #ifndef __MB_IMG_LDR_H_
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2 #define __MB_IMG_LDR_H_
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3
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4 typedef struct _mb_img_data mb_img_data_t;
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5 typedef struct _mb_img_ldr mb_img_ldr_t;
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6
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7 typedef enum _mb_img_fmt {
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8 MB_IFMT_DUMMY,
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9 MB_IFMT_ARGB32,
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10 MB_IFMT_RGB24,
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11 MB_IFMT_A8,
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12 MB_IFMT_A1,
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13 MB_IFMT_RGB16_565
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14 } mb_img_fmt_t;
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15
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16 /*! \brief Encapsulate image.
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17 *
50d253d0fcba Simple image loader and image shape.
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18 * The format and content of an image is encapsulated by imag_data_t.
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19 * We hope someday, we can create an abstract backend layer that
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20 * can deal with image data.
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21 */
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22 struct _mb_img_data {
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23 /*! \brief Content of the image. */
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24 void *content;
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25 int w, h;
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26 int stride; /*!< \brief Number of bytes a row */
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27 mb_img_fmt_t fmt;
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28 /*! \brief Release the image that was loaded by the loader. */
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29 void (*free)(mb_img_data_t *img);
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30 };
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31 #define MB_IMG_DATA_FREE(img) (img)->free(img)
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32
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33 /*! \brief Image loader.
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34 *
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35 * An image loader take a ID and find out the corresponding
50d253d0fcba Simple image loader and image shape.
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36 * image from filesystem or somewhere. Image ID is a hierachical
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37 * structured path. It is relative to the root of image database.
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38 * Users of a loader do not need to know where the database is.
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39 * The location can be configured when a loader been instantiated.
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40 * But, it is invisible when loading images by an image loader.
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41 */
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42 struct _mb_img_ldr {
50d253d0fcba Simple image loader and image shape.
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43 /*! \brief Load a image with specified ID. */
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44 mb_img_data_t *(*load)(mb_img_ldr_t *ldr, const char *img_id);
50d253d0fcba Simple image loader and image shape.
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45 /*! \brief Free the loader. */
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46 void (*free)(mb_img_ldr_t *ldr);
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47 };
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48 #define MB_IMG_LDR_FREE(ldr) (ldr)->free(ldr)
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29acbd8a0dd0 Integrate sh_image with svg2code.py.
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49 #define MB_IMG_LDR_LOAD(ldr, img_id) (ldr)->load(ldr, img_id)
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50
50d253d0fcba Simple image loader and image shape.
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51 /*! \brief Create a simple image loader.
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52 *
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53 * \param img_repository is a repository where images are loaded from.
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54 * \return NULL for error.
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55 */
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56 extern mb_img_ldr_t *simple_mb_img_ldr_new(const char *img_repository);
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57
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58 #endif /* __MB_IMG_LDR_H_ */