282 lines
6.6 KiB
C
282 lines
6.6 KiB
C
#include "evas_common.h"
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#include "evas_private.h"
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#include <librsvg/rsvg.h>
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#include <librsvg/rsvg-cairo.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 int rsvg_initialized = 0;
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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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RsvgHandle *rsvg;
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RsvgDimensionData dim;
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int w, h;
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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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rsvg = rsvg_handle_new_from_file(file, NULL);
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if (!rsvg)
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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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rsvg_handle_set_dpi(rsvg, 75.0);
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rsvg_handle_get_dimensions(rsvg, &dim);
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w = dim.width;
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h = dim.height;
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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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rsvg_handle_close(rsvg, NULL);
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g_object_unref(rsvg);
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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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rsvg_handle_close(rsvg, NULL);
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g_object_unref(rsvg);
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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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RsvgHandle *rsvg;
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RsvgDimensionData dim;
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int w, h;
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cairo_surface_t *surface;
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cairo_t *cr;
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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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rsvg = rsvg_handle_new_from_file(file, NULL);
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if (!rsvg)
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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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rsvg_handle_set_dpi(rsvg, 75.0);
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rsvg_handle_get_dimensions(rsvg, &dim);
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w = dim.width;
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h = dim.height;
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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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rsvg_handle_close(rsvg, NULL);
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g_object_unref(rsvg);
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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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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 error;
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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 error;
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}
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memset(pixels, 0, w * h * sizeof(DATA32));
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surface = cairo_image_surface_create_for_data((unsigned char *)pixels, CAIRO_FORMAT_ARGB32,
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w, h, w * sizeof(DATA32));
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if (!surface)
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{
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto error;
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}
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cr = cairo_create(surface);
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if (!cr)
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{
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cairo_surface_destroy(surface);
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*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
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goto error;
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}
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cairo_scale(cr,
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(double)ie->w / dim.em,
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(double)ie->h / dim.ex);
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rsvg_handle_render_cairo(rsvg, cr);
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cairo_surface_destroy(surface);
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/* need to check if this is required... */
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cairo_destroy(cr);
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rsvg_handle_close(rsvg, NULL);
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g_object_unref(rsvg);
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evas_common_image_set_alpha_sparse(ie);
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return EINA_TRUE;
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error:
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rsvg_handle_close(rsvg, NULL);
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g_object_unref(rsvg);
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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 (!rsvg_initialized) rsvg_init();
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rsvg_initialized = 1;
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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 (!rsvg_initialized) return;
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//rsvg_term();
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//rsvg_initialized = 0;
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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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