302 lines
7.3 KiB
C
302 lines
7.3 KiB
C
#include <math.h>
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#include "evas_common.h"
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#include "evas_private.h"
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#include <Esvg.h>
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static inline Eina_Bool evas_image_load_file_is_svg(const char *file) EINA_ARG_NONNULL(1) EINA_PURE;
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static Eina_Bool evas_image_load_file_head_svg(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
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static Eina_Bool evas_image_load_file_data_svg(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4);
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Evas_Image_Load_Func evas_image_load_svg_func =
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{
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EINA_FALSE,
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evas_image_load_file_head_svg,
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evas_image_load_file_data_svg,
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NULL,
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EINA_FALSE
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};
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static Eina_Bool esvg_initialized = EINA_FALSE;
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static inline Eina_Bool evas_image_load_file_is_svg(const char *file)
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{
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int i, len = strlen(file);
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Eina_Bool is_gz = EINA_FALSE;
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for (i = len - 1; i > 0; i--)
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{
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if (file[i] == '.')
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{
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if (is_gz)
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break;
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else if (strcasecmp(file + i + 1, "gz") == 0)
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is_gz = EINA_TRUE;
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else
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break;
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}
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}
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if (i < 1) return EINA_FALSE;
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i++;
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if (i >= len) return EINA_FALSE;
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if (strncasecmp(file + i, "svg", 3) != 0) return EINA_FALSE;
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i += 3;
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if (is_gz)
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{
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if (file[i] == '.') return EINA_TRUE;
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else return EINA_FALSE;
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}
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else
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{
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if (file[i] == '\0') return EINA_TRUE;
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else if (((file[i] == 'z') || (file[i] == 'Z')) && (!file[i + 1])) return EINA_TRUE;
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else return EINA_FALSE;
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}
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}
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static Eina_Bool
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evas_image_load_file_head_svg(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
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{
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Ender_Element *e;
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int w, h;
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double sw, sh;
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/* ignore all files not called .svg or .svg.gz - because rsvg has a leak
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* where closing the handle doesn't free mem */
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if (!evas_image_load_file_is_svg(file))
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{
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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return EINA_FALSE;
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}
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e = esvg_parser_load(file, NULL, NULL);
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if (!e)
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{
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*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
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return EINA_FALSE;
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}
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esvg_renderable_x_dpi_set(e, 75.0);
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esvg_renderable_y_dpi_set(e, 75.0);
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esvg_svg_actual_width_get(e, &sw);
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esvg_svg_actual_height_get(e, &sh);
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esvg_element_setup(e, NULL);
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w = (int)ceil(sw);
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h = (int)ceil(sh);
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if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
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IMG_TOO_BIG(w, h))
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{
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ender_element_delete(e);
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if (IMG_TOO_BIG(w, h))
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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else
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*error = EVAS_LOAD_ERROR_GENERIC;
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return EINA_FALSE;
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}
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if (ie->load_opts.scale_down_by > 1)
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{
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w /= ie->load_opts.scale_down_by;
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h /= ie->load_opts.scale_down_by;
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}
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else if (ie->load_opts.dpi > 0.0)
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{
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w = (w * ie->load_opts.dpi) / 75.0;
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h = (h * ie->load_opts.dpi) / 75.0;
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}
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else if ((ie->load_opts.w > 0) &&
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(ie->load_opts.h > 0))
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{
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unsigned int w2, h2;
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w2 = ie->load_opts.w;
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h2 = (ie->load_opts.w * h) / w;
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if (h2 > ie->load_opts.h)
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{
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h2 = ie->load_opts.h;
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w2 = (ie->load_opts.h * w) / h;
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}
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w = w2;
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h = h2;
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}
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if (w < 1) w = 1;
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if (h < 1) h = 1;
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ie->w = w;
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ie->h = h;
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ie->flags.alpha = 1;
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ender_element_delete(e);
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*error = EVAS_LOAD_ERROR_NONE;
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return EINA_TRUE;
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}
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/** FIXME: All evas loaders need to be tightened up **/
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static Eina_Bool
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evas_image_load_file_data_svg(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
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{
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DATA32 *pixels;
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Ender_Element *e;
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Enesim_Error *err = NULL;
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Enesim_Surface *s;
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void *data;
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size_t stride;
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int w, h;
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double sw, sh;
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if (!evas_image_load_file_is_svg(file))
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{
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*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
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return EINA_FALSE;
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}
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e = esvg_parser_load(file, NULL, NULL);
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if (!e)
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{
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*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
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return EINA_FALSE;
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}
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esvg_renderable_x_dpi_set(e, 75.0);
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esvg_renderable_y_dpi_set(e, 75.0);
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esvg_svg_actual_width_get(e, &sw);
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esvg_svg_actual_height_get(e, &sh);
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w = (int)ceil(sw);
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h = (int)ceil(sh);
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if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE))
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{
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ender_element_delete(e);
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if (IMG_TOO_BIG(w, h))
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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else
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*error = EVAS_LOAD_ERROR_GENERIC;
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goto unref_renderer;
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}
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if (ie->load_opts.scale_down_by > 1)
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{
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w /= ie->load_opts.scale_down_by;
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h /= ie->load_opts.scale_down_by;
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}
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else if (ie->load_opts.dpi > 0.0)
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{
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w = (w * ie->load_opts.dpi) / 75.0;
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h = (h * ie->load_opts.dpi) / 75.0;
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}
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else if ((ie->load_opts.w > 0) &&
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(ie->load_opts.h > 0))
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{
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unsigned int w2, h2;
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w2 = ie->load_opts.w;
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h2 = (ie->load_opts.w * h) / w;
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if (h2 > ie->load_opts.h)
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{
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h2 = ie->load_opts.h;
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w2 = (ie->load_opts.h * w) / h;
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}
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w = w2;
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h = h2;
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}
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if (w < 1) w = 1;
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if (h < 1) h = 1;
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if ((w != (int)ie->w) || (h != (int)ie->h))
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{
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*error = EVAS_LOAD_ERROR_GENERIC;
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goto unref_renderer;
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}
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ie->flags.alpha = 1;
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evas_cache_image_surface_alloc(ie, w, h);
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pixels = evas_cache_image_pixels(ie);
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if (!pixels)
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{
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto unref_renderer;
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}
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memset(pixels, 0, w * h * sizeof(DATA32));
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s = enesim_surface_new(ENESIM_FORMAT_ARGB8888, w, h);
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if (!s)
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{
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto unref_renderer;
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}
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esvg_element_setup(e, NULL);
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if (!esvg_renderable_draw(e, s, NULL, 0, 0, &err))
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{
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*error = EVAS_LOAD_ERROR_GENERIC;
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enesim_error_dump(err);
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goto unref_surface;
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}
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if (!enesim_surface_data_get(s, &data, &stride))
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{
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*error = EVAS_LOAD_ERROR_GENERIC;
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goto unref_surface;
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}
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/* printf("test : %d %d\n", w * h * sizeof(int), h * stride); */
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/* if ((w * h * sizeof(int)) != (h * stride)) */
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/* { */
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/* *error = EVAS_LOAD_ERROR_GENERIC; */
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/* goto unref_surface; */
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/* } */
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/* FIXME: scale to (double)ie->w / dim.em, (double)ie->h / dim.ex */
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memcpy (pixels, data, h * stride);
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enesim_surface_unref(s);
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ender_element_delete(e);
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evas_common_image_set_alpha_sparse(ie);
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return EINA_TRUE;
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unref_surface:
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enesim_surface_unref(s);
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unref_renderer:
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ender_element_delete(e);
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return EINA_FALSE;
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}
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static int
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module_open(Evas_Module *em)
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{
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if (!em) return 0;
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em->functions = (void *)(&evas_image_load_svg_func);
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if (!esvg_initialized) esvg_init();
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esvg_initialized = EINA_TRUE;
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return 1;
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}
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static void
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module_close(Evas_Module *em __UNUSED__)
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{
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if (!esvg_initialized) return;
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esvg_shutdown();
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esvg_initialized = EINA_FALSE;
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}
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static Evas_Module_Api evas_modapi =
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{
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EVAS_MODULE_API_VERSION,
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"svg",
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"none",
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{
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module_open,
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module_close
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}
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};
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EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, svg);
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#ifndef EVAS_STATIC_BUILD_SVG
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EVAS_EINA_MODULE_DEFINE(image_loader, svg);
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#endif
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