MadButterfly: src/shape_image.c annotate

annotate src/shape_image.c @ 346:b391722bf20e

sh_image_t::img_data is managed by paint_image_t. - sh_image_t should not try to free it. - call sh_text_P_generate_layout() in sh_text_transform() - remove calling from other functions.

author	Thinker K.F. Li <thinker@branda.to>
date	Sun, 08 Mar 2009 14:44:41 +0800
parents	bb6e964da1c8
children	04d22dc38bc0

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
346 b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	68 int _sh_image_set_img_data(shape_t shape, mb_img_data_t img_data,
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	69 co_aix x, co_aix y, co_aix w, co_aix h) {
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	70 sh_image_t img = (sh_image_t )shape;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	71 paint_t *paint;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	72
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	73 ASSERT(img_data != NULL);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	74 ASSERT(shape->obj.obj_type == MBO_IMAGE);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	75
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	76 paint = rdman_paint_image_new(img->rdman, img_data);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	77 if(paint == NULL)
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	78 return ERR;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	79
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	80 if(img->paint)
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	81 rdman_paint_free(img->rdman, img->paint);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	82
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	83 img->img_data = img_data;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	84 img->x = x;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	85 img->y = y;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	86 img->w = w;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	87 img->h = h;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	88 img->paint = paint;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	89 rdman_paint_fill(img->rdman, paint, (shape_t *)img);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	90
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	91 return OK;
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	92 }
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	93
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	94 /*! \brief Creae a new image shape.
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	95 *
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	96 * \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	97 */
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	98 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	99 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	100 sh_image_t *img;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	101 cairo_format_t fmt;
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	102 paint_t *paint;
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	103 int r;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	104
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	105 img = O_ALLOC(sh_image_t);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	106 if(img == NULL)
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	107 return NULL;
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 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	110 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	111 img->rdman = rdman;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 img->shape.free = sh_image_free;
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	113
346 b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	114 r = _sh_image_set_img_data((shape_t *)img, img_data, x, y, w, h);
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	115 if(r != OK) {
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	116 mb_obj_destroy((shape_t *)img);
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	117 free(img);
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	118 return NULL;
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	119 }
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	120
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 return (shape_t *)img;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124 void sh_image_free(shape_t *shape) {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 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	126
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	127 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	128 mb_obj_destroy(shape);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	129 free(img);
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	130 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	131
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	132 void sh_image_transform(shape_t *shape) {
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	133 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	134 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	135 co_aix (*poses)[2];
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	136 co_aix img_matrix[6];
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	137 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	138 cairo_matrix_t cmatrix;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	139 int i;
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	140
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	141 img_data = img->img_data;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	142
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	143 poses = img->poses;
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	144 poses[0][0] = img->x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	145 poses[0][1] = img->y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	146 poses[1][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	147 poses[1][1] = img->y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	148 poses[2][0] = img->x + img->w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	149 poses[2][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	150 poses[3][0] = img->x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	151 poses[3][1] = img->y + img->h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	152 for(i = 0; i < 4; i++)
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	153 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	154
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	155 /* 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	156 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	157 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	158 img_matrix[2] = -poses[0][0];
29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	159 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	160 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	161 img_matrix[5] = -poses[0][1];
268 43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	162 if(img->w != img_data->w \|\|
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	163 img->h != img_data->h) {
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	164 /* Resize image */
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	165 x_factor = img_data->w / img->w;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	166 img_matrix[0] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	167 img_matrix[1] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	168 img_matrix[2] *= x_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	169 y_factor = img_data->h / img->h;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	170 img_matrix[3] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	171 img_matrix[4] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	172 img_matrix[5] *= y_factor;
43900cae1d49 Support resizing for image. Thinker K.F. Li <thinker@branda.to> parents: 266 diff changeset	173 }
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	174 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	175
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	176 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	177 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	178
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	179 /*! \brief Draw image for an image 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 * \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	182 */
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	183 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	184 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	185 cairo_pattern_t *saved_source;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	186 cairo_matrix_t matrix, saved_matrix;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	187 co_aix *aggr;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	188
260 29acbd8a0dd0 Integrate sh_image with svg2code.py. Thinker K.F. Li <thinker@branda.to> parents: 257 diff changeset	189 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	190 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	191 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	192 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	193 cairo_close_path(cr);
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	194 }
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	195
265 b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	196 /*! \brief Change geometry of an image.
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	197 *
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	198 * 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	199 */
b42ee279669e Change function name and add comments. Thinker K.F. Li <thinker@branda.to> parents: 260 diff changeset	200 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	201 co_aix w, co_aix h) {
257 50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	202 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	203
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	204 img->x = x;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	205 img->y = y;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	206 img->w = w;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	207 img->h = h;
50d253d0fcba Simple image loader and image shape. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	208 }
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	209
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	210 int sh_image_set_img_data(shape_t shape, mb_img_data_t img_data,
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	211 co_aix x, co_aix y, co_aix w, co_aix h) {
346 b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	212 int r;
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	213
346 b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	214 r = _sh_image_set_img_data(shape, img_data, x, y, w, h);
b391722bf20e sh_image_t::img_data is managed by paint_image_t. Thinker K.F. Li <thinker@branda.to> parents: 343 diff changeset	215 return r;
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	216 }
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	217
343 bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	218 mb_img_data_t sh_image_get_img_data(shape_t shape) {
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	219 sh_image_t img = (sh_image_t )shape;
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	220
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	221 ASSERT(shape->obj.obj_type == MBO_IMAGE);
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	222
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	223 return img->img_data;
bb6e964da1c8 sh_image_get_img_data() Thinker K.F. Li <thinker@branda.to> parents: 338 diff changeset	224 }

Mercurial > MadButterfly

annotate src/shape_image.c @ 346:b391722bf20e