1 /* 2 Copyright (C) 2009-2010 ProFUSION embedded systems 3 Copyright (C) 2009-2010 Samsung Electronics 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Library General Public 7 License as published by the Free Software Foundation; either 8 version 2 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public License 16 along with this library; see the file COPYING.LIB. If not, write to 17 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 Boston, MA 02110-1301, USA. 19 */ 20 21 #include "config.h" 22 #include "ewk_util.h" 23 24 #include "ewk_private.h" 25 #include <eina_safety_checks.h> 26 27 /** 28 * Converts an image from cairo_surface to the Evas_Object. 29 * 30 * @param canvas display canvas 31 * @param surface cairo representation of an image 32 * @return converted cairo_surface object to the Evas_Object 33 */ 34 Evas_Object* ewk_util_image_from_cairo_surface_add(Evas* canvas, cairo_surface_t* surface) 35 { 36 cairo_status_t status; 37 cairo_surface_type_t type; 38 cairo_format_t format; 39 int w, h, stride; 40 Evas_Object* image; 41 const void* src; 42 void* dst; 43 44 EINA_SAFETY_ON_NULL_RETURN_VAL(canvas, 0); 45 EINA_SAFETY_ON_NULL_RETURN_VAL(surface, 0); 46 47 status = cairo_surface_status(surface); 48 if (status != CAIRO_STATUS_SUCCESS) { 49 ERR("cairo surface is invalid: %s", cairo_status_to_string(status)); 50 return 0; 51 } 52 53 type = cairo_surface_get_type(surface); 54 if (type != CAIRO_SURFACE_TYPE_IMAGE) { 55 ERR("unknown surface type %d, required %d (CAIRO_SURFACE_TYPE_IMAGE).", 56 type, CAIRO_SURFACE_TYPE_IMAGE); 57 return 0; 58 } 59 60 format = cairo_image_surface_get_format(surface); 61 if (format != CAIRO_FORMAT_ARGB32 && format != CAIRO_FORMAT_RGB24) { 62 ERR("unknown surface format %d, expected %d or %d.", 63 format, CAIRO_FORMAT_ARGB32, CAIRO_FORMAT_RGB24); 64 return 0; 65 } 66 67 w = cairo_image_surface_get_width(surface); 68 h = cairo_image_surface_get_height(surface); 69 stride = cairo_image_surface_get_stride(surface); 70 if (w <= 0 || h <= 0 || stride <= 0) { 71 ERR("invalid image size %dx%d, stride=%d", w, h, stride); 72 return 0; 73 } 74 75 src = cairo_image_surface_get_data(surface); 76 if (!src) { 77 ERR("could not get source data."); 78 return 0; 79 } 80 81 image = evas_object_image_filled_add(canvas); 82 if (!image) { 83 ERR("could not add image to canvas."); 84 return 0; 85 } 86 87 evas_object_image_colorspace_set(image, EVAS_COLORSPACE_ARGB8888); 88 evas_object_image_size_set(image, w, h); 89 evas_object_image_alpha_set(image, format == CAIRO_FORMAT_ARGB32); 90 91 if (evas_object_image_stride_get(image) != stride) { 92 ERR("evas' stride %d diverges from cairo's %d.", 93 evas_object_image_stride_get(image), stride); 94 evas_object_del(image); 95 return 0; 96 } 97 98 dst = evas_object_image_data_get(image, EINA_TRUE); 99 memcpy(dst, src, h * stride); 100 evas_object_image_data_set(image, dst); 101 102 evas_object_resize(image, w, h); // helpful but not really required 103 104 return image; 105 } 106
