Mercurial > MadButterfly

annotate src/shape_image.c @ 272:01439f28d0bd

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Check-in primitive integrated madbuilder code.
author wycc
date Mon, 26 Jan 2009 01:36:04 +0800
parents 29acbd8a0dd0
children b42ee279669e
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 <cairo.h>
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4 #include "mb_types.h"
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5 #include "mb_shapes.h"
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6 #include "mb_img_ldr.h"
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7 #include "mb_tools.h"
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8
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9 #define ASSERT(x)
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10 #define OK 0
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11 #define ERR -1
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12
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13 typedef struct _sh_image {
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14 shape_t shape;
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15
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16 co_aix x, y;
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17 co_aix w, h;
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18 co_aix poses[4][2];
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19
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20 mb_img_data_t *img_data;
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21 paint_t *paint;
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22 redraw_man_t *rdman;
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23 } sh_image_t;
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24
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25 static void sh_image_free(shape_t *shape);
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26
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27 /*! \brief Creae a new image shape.
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28 *
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29 * \param img_data is image data whose owner-ship is transfered.
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30 */
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31 shape_t *rdman_shape_image_new(redraw_man_t *rdman, mb_img_data_t *img_data,
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32 co_aix x, co_aix y, co_aix w, co_aix h) {
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33 sh_image_t *img;
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34 cairo_format_t fmt;
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35 paint_t *paint;
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36
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37 img = O_ALLOC(sh_image_t);
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38 if(img == NULL)
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39 return NULL;
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40
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41 memset(img, 0, sizeof(sh_image_t));
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42
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43 img->shape.free = sh_image_free;
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44 mb_obj_init((mb_obj_t *)img, MBO_IMAGE);
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45 img->x = x;
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46 img->y = y;
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47 img->w = w;
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48 img->h = h;
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49 img->img_data = img_data;
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50
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51 paint = rdman_paint_image_new(rdman, img_data);
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52 rdman_paint_fill(rdman, paint, (shape_t *)img);
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53 img->paint = paint;
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54 img->rdman = rdman;
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55
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56 return (shape_t *)img;
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57 }
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58
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59 void sh_image_free(shape_t *shape) {
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60 sh_image_t *img = (sh_image_t *)shape;
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61
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62 rdman_paint_free(img->rdman, img->paint);
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63 mb_obj_destroy(shape);
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64 MB_IMG_DATA_FREE(img->img_data);
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65 free(img);
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66 }
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67
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68 void sh_image_transform(shape_t *shape) {
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69 sh_image_t *img = (sh_image_t *)shape;
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70 co_aix (*poses)[2];
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71 co_aix img_matrix[6];
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72 cairo_matrix_t cmatrix;
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73 int i;
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74
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75 poses = img->poses;
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76 poses[0][0] = img->x;
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77 poses[0][1] = img->y;
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78 poses[1][0] = img->x + img->w;
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79 poses[1][1] = img->y;
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80 poses[2][0] = img->x + img->w;
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81 poses[2][1] = img->y + img->h;
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82 poses[3][0] = img->x;
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83 poses[3][1] = img->y + img->h;
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84 for(i = 0; i < 4; i++)
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85 coord_trans_pos(img->shape.coord, &poses[i][0], &poses[i][1]);
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86
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87 img_matrix[0] = (poses[1][0] - poses[0][0]) / img->w;
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88 img_matrix[1] = (poses[1][1] - poses[0][1]) / img->w;
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89 img_matrix[2] = -poses[0][0];
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90 img_matrix[3] = (poses[3][0] - poses[0][0]) / img->h;
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91 img_matrix[4] = (poses[3][1] - poses[0][1]) / img->h;
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92 img_matrix[5] = -poses[0][1];
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93 paint_image_set_matrix(sh_get_fill(shape), img_matrix);
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94
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95 geo_from_positions(sh_get_geo(shape), 4, poses);
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96 }
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97
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98 /*! \brief Draw image for an image shape.
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99 *
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100 * \note Image is not rescaled for size of the shape.
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101 */
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102 void sh_image_draw(shape_t *shape, cairo_t *cr) {
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103 sh_image_t *img = (sh_image_t *)shape;
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104 cairo_pattern_t *saved_source;
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105 cairo_matrix_t matrix, saved_matrix;
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106 co_aix *aggr;
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107
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108 cairo_move_to(cr, img->poses[0][0], img->poses[0][1]);
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109 cairo_line_to(cr, img->poses[1][0], img->poses[1][1]);
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110 cairo_line_to(cr, img->poses[2][0], img->poses[2][1]);
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111 cairo_line_to(cr, img->poses[3][0], img->poses[3][1]);
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112 cairo_close_path(cr);
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113 }
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114
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115 void sh_image_set(shape_t *shape, co_aix x, co_aix y,
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116 co_aix w, co_aix h) {
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117 sh_image_t *img = (sh_image_t *)shape;
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118
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119 img->x = x;
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120 img->y = y;
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121 img->w = w;
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122 img->h = h;
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123 }