Mercurial > MadButterfly

annotate src/shape_image.c @ 930:30cd14b11bc7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
USe the graphics from the Max.
author wycc
date Sat, 06 Nov 2010 00:53:59 +0800
parents 586e50f82c1f
children a8d20bc8ce40
rev   line source
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
2 // vim: sw=4:ts=8:sts=4
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
3 #include <stdio.h>
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
4 #include <string.h>
448
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
5 #include "mb_graph_engine.h"
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
6 #include "mb_types.h"
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
7 #include "mb_shapes.h"
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
8 #include "mb_img_ldr.h"
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
9 #include "mb_tools.h"
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
10
265
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
11 /*! \page sh_image_n_image_ldr Image and Image Loader
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
12 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
13 * Image (\ref sh_image_t) is a shape to show an image on the output
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
14 * device. Programmers manipulate object of an image shape to show it
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
15 * at specified position with specified size. For a sh_image_t, an
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
16 * image should be specified to fill the shape. Programmers must have
265
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
17 * a way to load image from files. The solution proposed by MadButterfly
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
18 * is image loader (\ref mb_img_ldr_t).
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
19 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
20 * Image loader is a repository of image files, programmers give him an
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
21 * ID and get an image returned the loader. Image loader decodes image
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
22 * files specified IDs and return them in an internal representation.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
23 * The internal representation of an array of pixels. Pixels are in
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
24 * order of columns (X-axis) and then row by row (Y-axis). An pixel
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
25 * can be 32bits, for ARGB, 24bits, for RGB, 8bits, for 8bits Alpha or
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
26 * 256-grey-levels, and 1bits, for bitmap.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
27 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
28 * Every row is padded to round to byte boundary, a rounded row is a stride.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
29 * Bytes a stride occupied is stride size. The internal rpresentation
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
30 * is a series of strides. The data returned by image loader is
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
31 * \ref mb_img_data_t type. mb_img_data_t::content is data in internal
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
32 * representation.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
33 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
34 * \ref simple_mb_img_ldr_t is a simple implementation of image loader.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
35 * It is a repository of image files in a directory and sub-directories.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
36 * ID of an image is mapped to a file in the directory and sub-directories.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
37 * ID it-self is a relative path relate to root directory of the repository.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
38 * \ref simple_mb_img_ldr_t handle PNG files only, now.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
39 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
40 * \section get_img_ldr Get an Image Loader for Program
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
41 * redraw_man_t::img_ldr is an image loader assigned by backend.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
42 * X backend, now, create an instance of simple_mb_img_ldr_t and assigns
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
43 * the instance to redraw_man_t::img_ldr. Programmers should get
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
44 * image loader assigned for a rdman by calling rdman_img_ldr().
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
45 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
46 * \image html image_n_ldr.png
266
af2d3300f8ff Add image for document of latex format
Thinker K.F. Li <thinker@branda.to>
parents: 265
diff changeset
47 * \image latex image_n_ldr.eps "Relationship of image and loader" width=10cm
265
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
48 */
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
49
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
50 #define ASSERT(x)
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
51 #define OK 0
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
52 #define ERR -1
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
53
265
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
54 /*! \brief Image shape.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
55 */
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
56 typedef struct _sh_image {
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
57 shape_t shape;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
58
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
59 co_aix x, y;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
60 co_aix w, h;
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
61 co_aix poses[4][2];
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
62
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
63 redraw_man_t *rdman;
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
64 } sh_image_t;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
65
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
66 static void sh_image_free(shape_t *shape);
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
67
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
68 /*! \brief Creae a new image shape.
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
69 *
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
70 * \param img_data is image data whose owner-ship is transfered.
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
71 */
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
72 shape_t *rdman_shape_image_new(redraw_man_t *rdman,
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
73 co_aix x, co_aix y, co_aix w, co_aix h) {
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
74 sh_image_t *img;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
75
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
76 img = O_ALLOC(sh_image_t);
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
77 if(img == NULL)
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
78 return NULL;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
79
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
80 memset(img, 0, sizeof(sh_image_t));
338
6a1b36738d3d sh_image_set_img_data() is a function to change content of a sh_image_t.
Thinker K.F. Li <thinker@branda.to>
parents: 268
diff changeset
81 mb_obj_init((mb_obj_t *)img, MBO_IMAGE);
6a1b36738d3d sh_image_set_img_data() is a function to change content of a sh_image_t.
Thinker K.F. Li <thinker@branda.to>
parents: 268
diff changeset
82 img->rdman = rdman;
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
83 img->shape.free = sh_image_free;
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
84
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
85 img->x = x;
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
86 img->y = y;
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
87 img->w = w;
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
88 img->h = h;
672
cbad519226d4 Make sh_image_t managed, and init property store for managed shapes
Thinker K.F. Li <thinker@branda.to>
parents: 473
diff changeset
89
cbad519226d4 Make sh_image_t managed, and init property store for managed shapes
Thinker K.F. Li <thinker@branda.to>
parents: 473
diff changeset
90 rdman_shape_man(rdman, (shape_t *)img);
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
91
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
92 return (shape_t *)img;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
93 }
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
94
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
95 void sh_image_free(shape_t *shape) {
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
96 sh_image_t *img = (sh_image_t *)shape;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
97
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
98 mb_obj_destroy(shape);
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
99 free(img);
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
100 }
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
101
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
102 void sh_image_transform(shape_t *shape) {
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
103 sh_image_t *img = (sh_image_t *)shape;
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
104 paint_t *paint;
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
105 co_aix (*poses)[2];
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
106 co_aix img_matrix[6];
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
107 co_aix rev_matrix[6];
268
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
108 co_aix x_factor, y_factor;
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
109 int img_w, img_h;
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
110 int i;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
111
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
112 poses = img->poses;
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
113 poses[0][0] = img->x;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
114 poses[0][1] = img->y;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
115 poses[1][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
116 poses[1][1] = img->y;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
117 poses[2][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
118 poses[2][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
119 poses[3][0] = img->x;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
120 poses[3][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
121 for(i = 0; i < 4; i++)
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
122 coord_trans_pos(img->shape.coord, &poses[i][0], &poses[i][1]);
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
123
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
124 geo_from_positions(sh_get_geo(shape), 4, poses);
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
125
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
126 paint = sh_get_fill(shape);
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
127 if(paint == NULL)
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
128 return;
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
129
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
130 ASSERT(paint.pnt_type == MBP_IMAGE);
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
131
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
132 paint_image_get_size(paint, &img_w, &img_h);
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
133
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
134 /* Transformation from image space to user space */
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
135 img_matrix[0] = (poses[1][0] - poses[0][0]) / img->w;
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
136 img_matrix[1] = (poses[3][0] - poses[3][0]) / img->h;
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
137 img_matrix[2] = poses[0][0];
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
138 img_matrix[3] = (poses[1][1] - poses[0][1]) / img->w;
260
29acbd8a0dd0 Integrate sh_image with svg2code.py.
Thinker K.F. Li <thinker@branda.to>
parents: 257
diff changeset
139 img_matrix[4] = (poses[3][1] - poses[0][1]) / img->h;
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
140 img_matrix[5] = poses[0][1];
356
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
141 if(img->w != img_w ||
3e84458968ec Move mb_img_data_t out from argument list of rdman_shape_image_new().
Thinker K.F. Li <thinker@branda.to>
parents: 348
diff changeset
142 img->h != img_h) {
268
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
143 /* Resize image */
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
144 x_factor = img->w / img_w;
268
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
145 img_matrix[0] *= x_factor;
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
146 img_matrix[1] *= x_factor;
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
147 y_factor = img->h / img_h;
268
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
148 img_matrix[3] *= y_factor;
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
149 img_matrix[4] *= y_factor;
43900cae1d49 Support resizing for image.
Thinker K.F. Li <thinker@branda.to>
parents: 266
diff changeset
150 }
778
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
151 compute_reverse(img_matrix, rev_matrix);
61c217f8cec8 Fix bug of transformation from user space to image space.
Thinker K.F. Li <thinker@codemud.net>
parents: 672
diff changeset
152 paint_image_set_matrix(sh_get_fill(shape), rev_matrix);
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
153 }
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
154
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
155 /*! \brief Draw image for an image shape.
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
156 *
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
157 * \note Image is not rescaled for size of the shape.
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
158 */
448
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
159 void sh_image_draw(shape_t *shape, mbe_t *cr) {
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
160 sh_image_t *img = (sh_image_t *)shape;
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
parents: 779
diff changeset
161
448
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
162 mbe_move_to(cr, img->poses[0][0], img->poses[0][1]);
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
163 mbe_line_to(cr, img->poses[1][0], img->poses[1][1]);
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
164 mbe_line_to(cr, img->poses[2][0], img->poses[2][1]);
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
165 mbe_line_to(cr, img->poses[3][0], img->poses[3][1]);
16116d84bc5e Replace Cairo with a abstract layer mb_graph_engine.
Thinker K.F. Li <thinker@branda.to>
parents: 356
diff changeset
166 mbe_close_path(cr);
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
167 }
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
168
265
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
169 /*! \brief Change geometry of an image.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
170 *
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
171 * Set position and size of an image.
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
172 */
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
173 void sh_image_set_geometry(shape_t *shape, co_aix x, co_aix y,
b42ee279669e Change function name and add comments.
Thinker K.F. Li <thinker@branda.to>
parents: 260
diff changeset
174 co_aix w, co_aix h) {
257
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
175 sh_image_t *img = (sh_image_t *)shape;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
176
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
177 img->x = x;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
178 img->y = y;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
179 img->w = w;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
180 img->h = h;
50d253d0fcba Simple image loader and image shape.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
181 }