MadButterfly: src/shape_image.c annotate

annotate src/shape_image.c @ 324:0f0a3da11390

merge

author	wycc
date	Thu, 05 Mar 2009 14:31:59 +0800
parents	43900cae1d49
children	6a1b36738d3d

rev	line source
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	1 #include <stdio.h>
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	2 #include <string.h>
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	3 #include <cairo.h>
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include "mb_types.h"
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5 #include "mb_shapes.h"
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 #include "mb_img_ldr.h"
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	7 #include "mb_tools.h"
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	8
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	9 /*! \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	10 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	11 * 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	12 * device. Programmers manipulate object of an image shape to show it
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	13 * at specified position with specified size. To create a new instance
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	14 * of sh_iamge_t, an image should be specified. Programmers must have
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	15 * 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	16 * 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	17 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	18 * 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	19 * 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	20 * 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	21 * 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	22 * 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	23 * 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	24 * 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	25 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	26 * 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	27 * 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	28 * 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	29 * \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	30 * representation.
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	31 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	32 * \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	33 * 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	34 * 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	35 * 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	36 * \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	37 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	38 * \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	39 * 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	40 * 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	41 * 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	42 * 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	43 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	44 * \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	45 * \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	46 */
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	47
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48 #define ASSERT(x)
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49 #define OK 0
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	50 #define ERR -1
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	51
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	52 /*! \brief Image shape.
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	53 */
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54 typedef struct _sh_image {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55 shape_t shape;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	57 co_aix x, y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58 co_aix w, h;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	59 co_aix poses[4][2];
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	60
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	61 mb_img_data_t *img_data;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	62 paint_t *paint;
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 */
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72 shape_t rdman_shape_image_new(redraw_man_t rdman, mb_img_data_t *img_data,
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 cairo_format_t fmt;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	76 paint_t *paint;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	77
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	78 img = O_ALLOC(sh_image_t);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	79 if(img == NULL)
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 return NULL;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82 memset(img, 0, sizeof(sh_image_t));
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84 img->shape.free = sh_image_free;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85 mb_obj_init((mb_obj_t *)img, MBO_IMAGE);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	86 img->x = x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	87 img->y = y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	88 img->w = w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	89 img->h = h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	90 img->img_data = img_data;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	91
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	92 paint = rdman_paint_image_new(rdman, img_data);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	93 rdman_paint_fill(rdman, paint, (shape_t *)img);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	94 img->paint = paint;
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	95 img->rdman = rdman;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	96
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	97 return (shape_t *)img;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	98 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	99
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	100 void sh_image_free(shape_t *shape) {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	101 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	102
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	103 rdman_paint_free(img->rdman, img->paint);
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	104 mb_obj_destroy(shape);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	105 MB_IMG_DATA_FREE(img->img_data);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	106 free(img);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	107 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	108
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	109 void sh_image_transform(shape_t *shape) {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	110 sh_image_t img = (sh_image_t )shape;
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	111 mb_img_data_t *img_data;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	112 co_aix (*poses)[2];
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	113 co_aix img_matrix[6];
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	114 co_aix x_factor, y_factor;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	115 cairo_matrix_t cmatrix;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116 int i;
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	117
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	118 img_data = img->img_data;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	119
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	120 poses = img->poses;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 poses[0][0] = img->x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 poses[0][1] = img->y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 poses[1][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124 poses[1][1] = img->y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 poses[2][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 poses[2][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127 poses[3][0] = img->x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	128 poses[3][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	129 for(i = 0; i < 4; i++)
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	130 coord_trans_pos(img->shape.coord, &poses[i][0], &poses[i][1]);
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	131
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	132 /* Transformation from user space to image space */
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	133 img_matrix[0] = (poses[1][0] - poses[0][0]) / img->w;
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	134 img_matrix[1] = (poses[1][1] - poses[0][1]) / img->w;
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	135 img_matrix[2] = -poses[0][0];
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	136 img_matrix[3] = (poses[3][0] - poses[0][0]) / img->h;
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	137 img_matrix[4] = (poses[3][1] - poses[0][1]) / img->h;
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	138 img_matrix[5] = -poses[0][1];
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	139 if(img->w != img_data->w \|\|
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	140 img->h != img_data->h) {
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	141 /* Resize image */
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	142 x_factor = img_data->w / img->w;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	143 img_matrix[0] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	144 img_matrix[1] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	145 img_matrix[2] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	146 y_factor = img_data->h / img->h;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	147 img_matrix[3] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	148 img_matrix[4] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	149 img_matrix[5] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	150 }
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	151 paint_image_set_matrix(sh_get_fill(shape), img_matrix);
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	152
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	153 geo_from_positions(sh_get_geo(shape), 4, poses);
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
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	156 /*! \brief Draw image for an image shape.
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	157 *
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	158 * \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	159 */
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	160 void sh_image_draw(shape_t shape, cairo_t cr) {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	161 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	162 cairo_pattern_t *saved_source;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	163 cairo_matrix_t matrix, saved_matrix;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	164 co_aix *aggr;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	165
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	166 cairo_move_to(cr, img->poses[0][0], img->poses[0][1]);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	167 cairo_line_to(cr, img->poses[1][0], img->poses[1][1]);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	168 cairo_line_to(cr, img->poses[2][0], img->poses[2][1]);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	169 cairo_line_to(cr, img->poses[3][0], img->poses[3][1]);
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	170 cairo_close_path(cr);
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	171 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	172
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	173 /*! \brief Change geometry of an image.
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	174 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	175 * 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	176 */
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	177 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	178 co_aix w, co_aix h) {
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	179 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	180
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	181 img->x = x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	182 img->y = y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	183 img->w = w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	184 img->h = h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	185 }

Mercurial > MadButterfly

annotate src/shape_image.c @ 324:0f0a3da11390