[18608] | 1 | /* vim: set sw=4: -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ |
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| 2 | /* |
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| 3 | rsvg-shapes.c: Draw SVG shapes |
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| 4 | |
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| 5 | Copyright (C) 2000 Eazel, Inc. |
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| 6 | Copyright (C) 2002 Dom Lachowicz <cinamod@hotmail.com> |
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| 7 | |
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| 8 | This program is free software; you can redistribute it and/or |
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| 9 | modify it under the terms of the GNU Library General Public License as |
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| 10 | published by the Free Software Foundation; either version 2 of the |
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| 11 | License, or (at your option) any later version. |
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| 12 | |
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| 13 | This program is distributed in the hope that it will be useful, |
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | Library General Public License for more details. |
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| 17 | |
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| 18 | You should have received a copy of the GNU Library General Public |
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| 19 | License along with this program; if not, write to the |
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| 20 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 21 | Boston, MA 02111-1307, USA. |
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| 22 | |
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| 23 | Author: Raph Levien <raph@artofcode.com> |
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| 24 | */ |
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[18804] | 25 | #include <string.h> |
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[18608] | 26 | |
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| 27 | #include "rsvg-shapes.h" |
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| 28 | #include "rsvg-styles.h" |
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| 29 | #include "rsvg-css.h" |
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| 30 | #include "rsvg-private.h" |
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| 31 | #include "rsvg-bpath-util.h" |
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| 32 | #include "rsvg-path.h" |
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| 33 | |
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| 34 | #include <libart_lgpl/art_affine.h> |
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| 35 | #include <libart_lgpl/art_vpath_bpath.h> |
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| 36 | #include <libart_lgpl/art_render_svp.h> |
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| 37 | #include <libart_lgpl/art_svp_vpath.h> |
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| 38 | #include <libart_lgpl/art_svp_intersect.h> |
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| 39 | #include <libart_lgpl/art_svp_vpath.h> |
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| 40 | #include <libart_lgpl/art_rgb_affine.h> |
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| 41 | #include <libart_lgpl/art_rgb_rgba_affine.h> |
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| 42 | |
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| 43 | /* 4/3 * (1-cos 45)/sin 45 = 4/3 * sqrt(2) - 1 */ |
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| 44 | #define RSVG_ARC_MAGIC ((double) 0.5522847498) |
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| 45 | |
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| 46 | /** |
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| 47 | * rsvg_close_vpath: Close a vector path. |
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| 48 | * @src: Source vector path. |
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| 49 | * |
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| 50 | * Closes any open subpaths in the vector path. |
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| 51 | * |
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| 52 | * Return value: Closed vector path, allocated with g_new. |
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| 53 | **/ |
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| 54 | static ArtVpath * |
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| 55 | rsvg_close_vpath (const ArtVpath *src) |
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| 56 | { |
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| 57 | ArtVpath *result; |
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| 58 | int n_result, n_result_max; |
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| 59 | int src_ix; |
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| 60 | double beg_x, beg_y; |
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| 61 | gboolean open; |
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| 62 | |
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| 63 | n_result = 0; |
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| 64 | n_result_max = 16; |
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| 65 | result = g_new (ArtVpath, n_result_max); |
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| 66 | |
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| 67 | beg_x = 0; |
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| 68 | beg_y = 0; |
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| 69 | open = FALSE; |
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| 70 | |
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| 71 | for (src_ix = 0; src[src_ix].code != ART_END; src_ix++) |
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| 72 | { |
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| 73 | if (n_result == n_result_max) |
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| 74 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
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| 75 | result[n_result].code = src[src_ix].code == ART_MOVETO_OPEN ? |
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| 76 | ART_MOVETO : src[src_ix].code; |
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| 77 | result[n_result].x = src[src_ix].x; |
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| 78 | result[n_result].y = src[src_ix].y; |
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| 79 | n_result++; |
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| 80 | if (src[src_ix].code == ART_MOVETO_OPEN) |
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| 81 | { |
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| 82 | beg_x = src[src_ix].x; |
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| 83 | beg_y = src[src_ix].y; |
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| 84 | open = TRUE; |
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| 85 | } |
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| 86 | else if (src[src_ix + 1].code != ART_LINETO) |
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| 87 | { |
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| 88 | if (open && (beg_x != src[src_ix].x || beg_y != src[src_ix].y)) |
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| 89 | { |
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| 90 | if (n_result == n_result_max) |
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| 91 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
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| 92 | result[n_result].code = ART_LINETO; |
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| 93 | result[n_result].x = beg_x; |
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| 94 | result[n_result].y = beg_y; |
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| 95 | n_result++; |
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| 96 | } |
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| 97 | open = FALSE; |
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| 98 | } |
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| 99 | } |
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| 100 | if (n_result == n_result_max) |
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| 101 | result = g_renew (ArtVpath, result, n_result_max <<= 1); |
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| 102 | result[n_result].code = ART_END; |
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| 103 | result[n_result].x = 0.0; |
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| 104 | result[n_result].y = 0.0; |
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| 105 | return result; |
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| 106 | } |
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| 107 | |
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| 108 | /** |
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| 109 | * rsvg_render_svp: Render an SVP. |
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| 110 | * @ctx: Context in which to render. |
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| 111 | * @svp: SVP to render. |
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| 112 | * @ps: Paint server for rendering. |
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| 113 | * @opacity: Opacity as 0..0xff. |
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| 114 | * |
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| 115 | * Renders the SVP over the pixbuf in @ctx. |
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| 116 | **/ |
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| 117 | static void |
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| 118 | rsvg_render_svp (RsvgHandle *ctx, const ArtSVP *svp, |
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| 119 | RsvgPaintServer *ps, int opacity) |
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| 120 | { |
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| 121 | GdkPixbuf *pixbuf; |
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| 122 | ArtRender *render; |
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| 123 | gboolean has_alpha; |
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| 124 | |
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| 125 | pixbuf = ctx->pixbuf; |
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| 126 | if (pixbuf == NULL) |
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| 127 | { |
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| 128 | /* FIXME: What warning/GError here? */ |
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| 129 | return; |
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| 130 | } |
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| 131 | |
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| 132 | has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); |
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| 133 | |
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| 134 | render = art_render_new (0, 0, |
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| 135 | gdk_pixbuf_get_width (pixbuf), |
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| 136 | gdk_pixbuf_get_height (pixbuf), |
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| 137 | gdk_pixbuf_get_pixels (pixbuf), |
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| 138 | gdk_pixbuf_get_rowstride (pixbuf), |
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| 139 | gdk_pixbuf_get_n_channels (pixbuf) - |
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| 140 | (has_alpha ? 1 : 0), |
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| 141 | gdk_pixbuf_get_bits_per_sample (pixbuf), |
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| 142 | has_alpha ? ART_ALPHA_SEPARATE : ART_ALPHA_NONE, |
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| 143 | NULL); |
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| 144 | |
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| 145 | art_render_svp (render, svp); |
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| 146 | art_render_mask_solid (render, (opacity << 8) + opacity + (opacity >> 7)); |
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| 147 | rsvg_render_paint_server (render, ps, NULL); /* todo: paint server ctx */ |
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| 148 | art_render_invoke (render); |
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| 149 | } |
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| 150 | |
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| 151 | static void |
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| 152 | rsvg_render_bpath (RsvgHandle *ctx, const ArtBpath *bpath) |
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| 153 | { |
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| 154 | RsvgState *state; |
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| 155 | ArtBpath *affine_bpath; |
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| 156 | ArtVpath *vpath; |
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| 157 | ArtSVP *svp; |
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| 158 | GdkPixbuf *pixbuf; |
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| 159 | gboolean need_tmpbuf; |
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| 160 | int opacity; |
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| 161 | int tmp; |
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| 162 | |
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| 163 | pixbuf = ctx->pixbuf; |
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| 164 | if (pixbuf == NULL) |
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| 165 | { |
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| 166 | /* FIXME: What warning/GError here? */ |
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| 167 | return; |
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| 168 | } |
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| 169 | |
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| 170 | state = &ctx->state[ctx->n_state - 1]; |
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| 171 | |
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| 172 | /* todo: handle visibility stuff earlier for performance benefits |
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| 173 | * handles all path based shapes. will handle text and images separately |
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| 174 | */ |
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| 175 | if (!state->visible) |
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| 176 | return; |
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| 177 | |
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| 178 | affine_bpath = art_bpath_affine_transform (bpath, |
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| 179 | state->affine); |
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| 180 | |
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| 181 | vpath = art_bez_path_to_vec (affine_bpath, 0.25); |
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| 182 | art_free (affine_bpath); |
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| 183 | |
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| 184 | need_tmpbuf = (state->fill != NULL) && (state->stroke != NULL) && |
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| 185 | state->opacity != 0xff; |
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| 186 | |
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| 187 | if (need_tmpbuf) |
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| 188 | rsvg_push_opacity_group (ctx); |
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| 189 | |
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| 190 | if (state->fill != NULL) |
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| 191 | { |
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| 192 | ArtVpath *closed_vpath; |
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| 193 | ArtSVP *svp2; |
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| 194 | ArtSvpWriter *swr; |
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| 195 | |
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| 196 | closed_vpath = rsvg_close_vpath (vpath); |
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| 197 | svp = art_svp_from_vpath (closed_vpath); |
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| 198 | g_free (closed_vpath); |
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| 199 | |
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| 200 | swr = art_svp_writer_rewind_new (ART_WIND_RULE_NONZERO); |
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| 201 | art_svp_intersector (svp, swr); |
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| 202 | |
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| 203 | svp2 = art_svp_writer_rewind_reap (swr); |
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| 204 | art_svp_free (svp); |
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| 205 | |
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| 206 | opacity = state->fill_opacity; |
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| 207 | if (!need_tmpbuf && state->opacity != 0xff) |
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| 208 | { |
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| 209 | tmp = opacity * state->opacity + 0x80; |
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| 210 | opacity = (tmp + (tmp >> 8)) >> 8; |
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| 211 | } |
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| 212 | rsvg_render_svp (ctx, svp2, state->fill, opacity); |
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| 213 | art_svp_free (svp2); |
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| 214 | } |
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| 215 | |
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| 216 | if (state->stroke != NULL) |
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| 217 | { |
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| 218 | /* todo: libart doesn't yet implement anamorphic scaling of strokes */ |
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| 219 | double stroke_width = state->stroke_width * |
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| 220 | art_affine_expansion (state->affine); |
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| 221 | |
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| 222 | if (stroke_width < 0.25) |
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| 223 | stroke_width = 0.25; |
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| 224 | |
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| 225 | /* if the path is dashed, stroke it */ |
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| 226 | if (state->dash.n_dash > 0) |
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| 227 | { |
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| 228 | ArtVpath * dashed_vpath = art_vpath_dash (vpath, &state->dash); |
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| 229 | art_free (vpath); |
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| 230 | vpath = dashed_vpath; |
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| 231 | } |
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| 232 | |
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| 233 | svp = art_svp_vpath_stroke (vpath, state->join, state->cap, |
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| 234 | stroke_width, state->miter_limit, 0.25); |
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| 235 | opacity = state->stroke_opacity; |
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| 236 | if (!need_tmpbuf && state->opacity != 0xff) |
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| 237 | { |
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| 238 | tmp = opacity * state->opacity + 0x80; |
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| 239 | opacity = (tmp + (tmp >> 8)) >> 8; |
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| 240 | } |
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| 241 | rsvg_render_svp (ctx, svp, state->stroke, opacity); |
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| 242 | art_svp_free (svp); |
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| 243 | } |
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| 244 | |
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| 245 | if (need_tmpbuf) |
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| 246 | rsvg_pop_opacity_group (ctx, state->opacity); |
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| 247 | |
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| 248 | art_free (vpath); |
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| 249 | } |
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| 250 | |
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| 251 | void |
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| 252 | rsvg_render_path(RsvgHandle *ctx, const char *d) |
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| 253 | { |
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| 254 | RsvgBpathDef *bpath_def; |
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| 255 | |
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| 256 | bpath_def = rsvg_parse_path (d); |
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| 257 | rsvg_bpath_def_art_finish (bpath_def); |
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| 258 | |
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| 259 | rsvg_render_bpath (ctx, bpath_def->bpath); |
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| 260 | |
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| 261 | rsvg_bpath_def_free (bpath_def); |
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| 262 | } |
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| 263 | |
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| 264 | void |
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| 265 | rsvg_start_path (RsvgHandle *ctx, const xmlChar **atts) |
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| 266 | { |
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| 267 | int i; |
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| 268 | char *d = NULL; |
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| 269 | const char * klazz = NULL, * id = NULL; |
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| 270 | |
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[18804] | 271 | /* skip over defs entries for now */ |
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| 272 | if (ctx->in_defs) return; |
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| 273 | |
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[18608] | 274 | if (atts != NULL) |
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| 275 | { |
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| 276 | for (i = 0; atts[i] != NULL; i += 2) |
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| 277 | { |
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| 278 | if (!strcmp ((char *)atts[i], "d")) |
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| 279 | d = (char *)atts[i + 1]; |
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| 280 | else if (!strcmp ((char *)atts[i], "class")) |
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| 281 | klazz = (char *)atts[i + 1]; |
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| 282 | else if (!strcmp ((char *)atts[i], "id")) |
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| 283 | id = (const char *)atts[i + 1]; |
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| 284 | } |
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| 285 | } |
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| 286 | |
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| 287 | if (d == NULL) |
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| 288 | return; |
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| 289 | |
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| 290 | rsvg_parse_style_attrs (ctx, "path", klazz, id, atts); |
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| 291 | rsvg_render_path (ctx, d); |
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| 292 | } |
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| 293 | |
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| 294 | static GString * |
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| 295 | rsvg_make_poly_point_list(const char * points) |
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| 296 | { |
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| 297 | guint idx = 0, size = strlen(points); |
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| 298 | GString * str = g_string_sized_new (size); |
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| 299 | |
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| 300 | while (idx < size) |
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| 301 | { |
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| 302 | /* scan for first point */ |
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| 303 | while (!g_ascii_isdigit (points[idx]) && (points[idx] != '.') |
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| 304 | && (points[idx] != '-') && (idx < size)) |
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| 305 | idx++; |
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| 306 | |
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| 307 | /* now build up the point list (everything until next letter!) */ |
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| 308 | if (idx < size && points[idx] == '-') |
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| 309 | g_string_append_c (str, points[idx++]); /* handle leading '-' */ |
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| 310 | while ((g_ascii_isdigit (points[idx]) || (points[idx] == '.')) && (idx < size)) |
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| 311 | g_string_append_c (str, points[idx++]); |
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| 312 | |
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| 313 | g_string_append_c (str, ' '); |
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| 314 | } |
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| 315 | |
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| 316 | return str; |
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| 317 | } |
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| 318 | |
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| 319 | static void |
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| 320 | rsvg_start_any_poly(RsvgHandle *ctx, const xmlChar **atts, gboolean is_polyline) |
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| 321 | { |
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| 322 | /* the only difference between polygon and polyline is |
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| 323 | that a polyline closes the path */ |
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| 324 | |
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| 325 | int i; |
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| 326 | const char * verts = (const char *)NULL; |
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| 327 | GString * g = NULL; |
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| 328 | gchar ** pointlist = NULL; |
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| 329 | const char * klazz = NULL, * id = NULL; |
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[18804] | 330 | |
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| 331 | /* skip over defs entries for now */ |
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| 332 | if (ctx->in_defs) return; |
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[18608] | 333 | |
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| 334 | if (atts != NULL) |
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| 335 | { |
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| 336 | for (i = 0; atts[i] != NULL; i += 2) |
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| 337 | { |
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| 338 | /* support for svg < 1.0 which used verts */ |
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| 339 | if (!strcmp ((char *)atts[i], "verts") || !strcmp ((char *)atts[i], "points")) |
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| 340 | verts = (const char *)atts[i + 1]; |
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| 341 | else if (!strcmp ((char *)atts[i], "class")) |
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| 342 | klazz = (const char *)atts[i + 1]; |
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| 343 | else if (!strcmp ((char *)atts[i], "id")) |
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| 344 | id = (const char *)atts[i + 1]; |
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| 345 | } |
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| 346 | } |
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| 347 | |
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| 348 | if (!verts) |
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| 349 | return; |
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| 350 | |
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| 351 | rsvg_parse_style_attrs (ctx, (is_polyline ? "polyline" : "polygon"), klazz, id, atts); |
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| 352 | |
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| 353 | /* todo: make the following more memory and CPU friendly */ |
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| 354 | g = rsvg_make_poly_point_list (verts); |
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| 355 | pointlist = g_strsplit (g->str, " ", -1); |
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| 356 | g_string_free (g, TRUE); |
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| 357 | |
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| 358 | /* represent as a "moveto, lineto*, close" path */ |
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| 359 | if (pointlist) |
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| 360 | { |
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| 361 | GString * d = g_string_sized_new (strlen(verts)); |
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| 362 | g_string_append_printf (d, "M %s %s ", pointlist[0], pointlist[1] ); |
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| 363 | |
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| 364 | for (i = 2; pointlist[i] != NULL && pointlist[i][0] != '\0'; i += 2) |
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| 365 | g_string_append_printf (d, "L %s %s ", pointlist[i], pointlist[i+1]); |
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| 366 | |
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| 367 | if (!is_polyline) |
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| 368 | g_string_append (d, "Z"); |
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| 369 | |
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| 370 | rsvg_render_path (ctx, d->str); |
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| 371 | g_string_free (d, TRUE); |
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| 372 | g_strfreev(pointlist); |
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| 373 | } |
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| 374 | } |
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| 375 | |
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| 376 | void |
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| 377 | rsvg_start_polygon (RsvgHandle *ctx, const xmlChar **atts) |
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| 378 | { |
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| 379 | rsvg_start_any_poly (ctx, atts, FALSE); |
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| 380 | } |
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| 381 | |
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| 382 | void |
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| 383 | rsvg_start_polyline (RsvgHandle *ctx, const xmlChar **atts) |
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| 384 | { |
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| 385 | rsvg_start_any_poly (ctx, atts, TRUE); |
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| 386 | } |
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| 387 | |
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| 388 | void |
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| 389 | rsvg_start_line (RsvgHandle *ctx, const xmlChar **atts) |
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| 390 | { |
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| 391 | int i; |
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| 392 | double x1 = 0, y1 = 0, x2 = 0, y2 = 0; |
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| 393 | GString * d = NULL; |
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| 394 | const char * klazz = NULL, * id = NULL; |
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[18804] | 395 | RsvgState *state; |
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[18608] | 396 | char buf [G_ASCII_DTOSTR_BUF_SIZE]; |
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| 397 | |
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[18804] | 398 | /* skip over defs entries for now */ |
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| 399 | if (ctx->in_defs) return; |
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| 400 | |
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| 401 | state = &ctx->state[ctx->n_state - 1]; |
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| 402 | |
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[18608] | 403 | if (atts != NULL) |
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| 404 | { |
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| 405 | for (i = 0; atts[i] != NULL; i += 2) |
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| 406 | { |
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| 407 | if (!strcmp ((char *)atts[i], "x1")) |
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| 408 | x1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
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| 409 | else if (!strcmp ((char *)atts[i], "y1")) |
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| 410 | y1 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
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| 411 | if (!strcmp ((char *)atts[i], "x2")) |
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| 412 | x2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
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| 413 | else if (!strcmp ((char *)atts[i], "y2")) |
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| 414 | y2 = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
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| 415 | else if (!strcmp ((char *)atts[i], "class")) |
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| 416 | klazz = (const char *)atts[i + 1]; |
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| 417 | else if (!strcmp ((char *)atts[i], "id")) |
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| 418 | id = (const char *)atts[i + 1]; |
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| 419 | } |
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| 420 | } |
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| 421 | rsvg_parse_style_attrs (ctx, "line", klazz, id, atts); |
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| 422 | |
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| 423 | /* emulate a line using a path */ |
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| 424 | /* ("M %f %f L %f %f", x1, y1, x2, y2) */ |
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| 425 | d = g_string_new ("M "); |
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| 426 | |
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| 427 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x1)); |
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| 428 | g_string_append_c (d, ' '); |
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| 429 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y1)); |
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| 430 | g_string_append (d, " L "); |
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| 431 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x2)); |
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| 432 | g_string_append_c (d, ' '); |
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| 433 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y2)); |
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| 434 | |
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| 435 | rsvg_render_path (ctx, d->str); |
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| 436 | g_string_free (d, TRUE); |
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| 437 | } |
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| 438 | |
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| 439 | void |
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| 440 | rsvg_start_rect (RsvgHandle *ctx, const xmlChar **atts) |
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| 441 | { |
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| 442 | int i; |
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| 443 | double x = -1, y = -1, w = -1, h = -1, rx = 0., ry = 0.; |
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| 444 | GString * d = NULL; |
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| 445 | const char * klazz = NULL, * id = NULL; |
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[18804] | 446 | RsvgState *state; |
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[18608] | 447 | char buf [G_ASCII_DTOSTR_BUF_SIZE]; |
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| 448 | gboolean got_rx = FALSE, got_ry = FALSE; |
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| 449 | |
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[18804] | 450 | /* skip over defs entries for now */ |
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| 451 | if (ctx->in_defs) return; |
---|
| 452 | |
---|
| 453 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 454 | |
---|
[18608] | 455 | if (atts != NULL) |
---|
| 456 | { |
---|
| 457 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 458 | { |
---|
| 459 | if (!strcmp ((char *)atts[i], "x")) |
---|
| 460 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 461 | else if (!strcmp ((char *)atts[i], "y")) |
---|
| 462 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 463 | else if (!strcmp ((char *)atts[i], "width")) |
---|
| 464 | w = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 465 | else if (!strcmp ((char *)atts[i], "height")) |
---|
| 466 | h = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 467 | else if (!strcmp ((char *)atts[i], "rx")) { |
---|
| 468 | rx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 469 | got_rx = TRUE; |
---|
| 470 | } |
---|
| 471 | else if (!strcmp ((char *)atts[i], "ry")) { |
---|
| 472 | ry = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 473 | got_ry = TRUE; |
---|
| 474 | } |
---|
| 475 | else if (!strcmp ((char *)atts[i], "class")) |
---|
| 476 | klazz = (const char *)atts[i + 1]; |
---|
| 477 | else if (!strcmp ((char *)atts[i], "id")) |
---|
| 478 | id = (const char *)atts[i + 1]; |
---|
| 479 | } |
---|
| 480 | } |
---|
| 481 | |
---|
| 482 | if (got_rx && !got_ry) |
---|
| 483 | ry = rx; |
---|
[18804] | 484 | else if (got_ry && !got_rx) |
---|
| 485 | rx = ry; |
---|
[18608] | 486 | |
---|
| 487 | if (x < 0. || y < 0. || w < 0. || h < 0. || rx < 0. || ry < 0.) |
---|
| 488 | return; |
---|
| 489 | |
---|
| 490 | rsvg_parse_style_attrs (ctx, "rect", klazz, id, atts); |
---|
| 491 | |
---|
| 492 | /* incrementing y by 1 properly draws borders. this is a HACK */ |
---|
| 493 | y += 1.; |
---|
| 494 | |
---|
| 495 | /* emulate a rect using a path */ |
---|
| 496 | |
---|
| 497 | d = g_string_new ("M "); |
---|
| 498 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x + rx)); |
---|
| 499 | g_string_append_c (d, ' '); |
---|
| 500 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y)); |
---|
| 501 | |
---|
| 502 | g_string_append (d, " H "); |
---|
| 503 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x + w - rx)); |
---|
| 504 | |
---|
| 505 | g_string_append (d, " A"); |
---|
| 506 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), rx)); |
---|
| 507 | g_string_append_c (d, ' '); |
---|
| 508 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), ry)); |
---|
| 509 | g_string_append_c (d, ' '); |
---|
| 510 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 511 | g_string_append_c (d, ' '); |
---|
| 512 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 513 | g_string_append_c (d, ' '); |
---|
| 514 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 1.)); |
---|
| 515 | g_string_append_c (d, ' '); |
---|
| 516 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x+w)); |
---|
| 517 | g_string_append_c (d, ' '); |
---|
| 518 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y+ry)); |
---|
| 519 | |
---|
| 520 | g_string_append (d, " V "); |
---|
| 521 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y+h-ry)); |
---|
| 522 | |
---|
| 523 | g_string_append (d, " A"); |
---|
| 524 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), rx)); |
---|
| 525 | g_string_append_c (d, ' '); |
---|
| 526 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), ry)); |
---|
| 527 | g_string_append_c (d, ' '); |
---|
| 528 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 529 | g_string_append_c (d, ' '); |
---|
| 530 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 531 | g_string_append_c (d, ' '); |
---|
| 532 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 1.)); |
---|
| 533 | g_string_append_c (d, ' '); |
---|
| 534 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x + w - rx)); |
---|
| 535 | g_string_append_c (d, ' '); |
---|
| 536 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y + h)); |
---|
| 537 | |
---|
| 538 | g_string_append (d, " H "); |
---|
| 539 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x + rx)); |
---|
| 540 | |
---|
| 541 | g_string_append (d, " A"); |
---|
| 542 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), rx)); |
---|
| 543 | g_string_append_c (d, ' '); |
---|
| 544 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), ry)); |
---|
| 545 | g_string_append_c (d, ' '); |
---|
| 546 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 547 | g_string_append_c (d, ' '); |
---|
| 548 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 549 | g_string_append_c (d, ' '); |
---|
| 550 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 1.)); |
---|
| 551 | g_string_append_c (d, ' '); |
---|
| 552 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x)); |
---|
| 553 | g_string_append_c (d, ' '); |
---|
| 554 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y + h - ry)); |
---|
| 555 | |
---|
| 556 | g_string_append (d, " V "); |
---|
| 557 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y+ry)); |
---|
| 558 | |
---|
| 559 | g_string_append (d, " A"); |
---|
| 560 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), rx)); |
---|
| 561 | g_string_append_c (d, ' '); |
---|
| 562 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), ry)); |
---|
| 563 | g_string_append_c (d, ' '); |
---|
| 564 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 565 | g_string_append_c (d, ' '); |
---|
| 566 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 0.)); |
---|
| 567 | g_string_append_c (d, ' '); |
---|
| 568 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), 1.)); |
---|
| 569 | g_string_append_c (d, ' '); |
---|
| 570 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), x+rx)); |
---|
| 571 | g_string_append_c (d, ' '); |
---|
| 572 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), y)); |
---|
| 573 | |
---|
| 574 | rsvg_render_path (ctx, d->str); |
---|
| 575 | g_string_free (d, TRUE); |
---|
| 576 | } |
---|
| 577 | |
---|
| 578 | void |
---|
| 579 | rsvg_start_circle (RsvgHandle *ctx, const xmlChar **atts) |
---|
| 580 | { |
---|
| 581 | int i; |
---|
| 582 | double cx = 0, cy = 0, r = 0; |
---|
| 583 | GString * d = NULL; |
---|
| 584 | const char * klazz = NULL, * id = NULL; |
---|
[18804] | 585 | RsvgState *state; |
---|
[18608] | 586 | char buf [G_ASCII_DTOSTR_BUF_SIZE]; |
---|
| 587 | |
---|
[18804] | 588 | /* skip over defs entries for now */ |
---|
| 589 | if (ctx->in_defs) return; |
---|
| 590 | |
---|
| 591 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 592 | |
---|
[18608] | 593 | if (atts != NULL) |
---|
| 594 | { |
---|
| 595 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 596 | { |
---|
| 597 | if (!strcmp ((char *)atts[i], "cx")) |
---|
| 598 | cx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 599 | else if (!strcmp ((char *)atts[i], "cy")) |
---|
| 600 | cy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 601 | else if (!strcmp ((char *)atts[i], "r")) |
---|
| 602 | r = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, |
---|
| 603 | rsvg_viewport_percentage((gdouble)ctx->width, (gdouble)ctx->height), |
---|
| 604 | state->font_size); |
---|
| 605 | else if (!strcmp ((char *)atts[i], "class")) |
---|
| 606 | klazz = (const char *)atts[i + 1]; |
---|
| 607 | else if (!strcmp ((char *)atts[i], "id")) |
---|
| 608 | id = (const char *)atts[i + 1]; |
---|
| 609 | } |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | if (cx < 0. || cy < 0. || r <= 0.) |
---|
| 613 | return; |
---|
| 614 | |
---|
| 615 | rsvg_parse_style_attrs (ctx, "circle", klazz, id, atts); |
---|
| 616 | |
---|
| 617 | /* approximate a circle using 4 bezier curves */ |
---|
| 618 | |
---|
| 619 | d = g_string_new ("M "); |
---|
| 620 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx+r)); |
---|
| 621 | g_string_append_c (d, ' '); |
---|
| 622 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 623 | |
---|
| 624 | g_string_append (d, " C "); |
---|
| 625 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx+r)); |
---|
| 626 | g_string_append_c (d, ' '); |
---|
| 627 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + r * RSVG_ARC_MAGIC)); |
---|
| 628 | g_string_append_c (d, ' '); |
---|
| 629 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + r * RSVG_ARC_MAGIC)); |
---|
| 630 | g_string_append_c (d, ' '); |
---|
| 631 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + r)); |
---|
| 632 | g_string_append_c (d, ' '); |
---|
| 633 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx)); |
---|
| 634 | g_string_append_c (d, ' '); |
---|
| 635 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + r)); |
---|
| 636 | |
---|
| 637 | g_string_append (d, " C "); |
---|
| 638 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - r * RSVG_ARC_MAGIC)); |
---|
| 639 | g_string_append_c (d, ' '); |
---|
| 640 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + r)); |
---|
| 641 | g_string_append_c (d, ' '); |
---|
| 642 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - r)); |
---|
| 643 | g_string_append_c (d, ' '); |
---|
| 644 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + r * RSVG_ARC_MAGIC)); |
---|
| 645 | g_string_append_c (d, ' '); |
---|
| 646 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - r)); |
---|
| 647 | g_string_append_c (d, ' '); |
---|
| 648 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 649 | |
---|
| 650 | g_string_append (d, " C "); |
---|
| 651 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - r)); |
---|
| 652 | g_string_append_c (d, ' '); |
---|
| 653 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - r * RSVG_ARC_MAGIC)); |
---|
| 654 | g_string_append_c (d, ' '); |
---|
| 655 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - r * RSVG_ARC_MAGIC)); |
---|
| 656 | g_string_append_c (d, ' '); |
---|
| 657 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - r)); |
---|
| 658 | g_string_append_c (d, ' '); |
---|
| 659 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx)); |
---|
| 660 | g_string_append_c (d, ' '); |
---|
| 661 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - r)); |
---|
| 662 | |
---|
| 663 | g_string_append (d, " C "); |
---|
| 664 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + r * RSVG_ARC_MAGIC)); |
---|
| 665 | g_string_append_c (d, ' '); |
---|
| 666 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - r)); |
---|
| 667 | g_string_append_c (d, ' '); |
---|
| 668 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + r)); |
---|
| 669 | g_string_append_c (d, ' '); |
---|
| 670 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - r * RSVG_ARC_MAGIC)); |
---|
| 671 | g_string_append_c (d, ' '); |
---|
| 672 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + r)); |
---|
| 673 | g_string_append_c (d, ' '); |
---|
| 674 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 675 | |
---|
| 676 | g_string_append (d, " Z"); |
---|
| 677 | |
---|
| 678 | rsvg_render_path (ctx, d->str); |
---|
| 679 | g_string_free (d, TRUE); |
---|
| 680 | } |
---|
| 681 | |
---|
| 682 | void |
---|
| 683 | rsvg_start_ellipse (RsvgHandle *ctx, const xmlChar **atts) |
---|
| 684 | { |
---|
| 685 | int i; |
---|
| 686 | double cx = 0, cy = 0, rx = 0, ry = 0; |
---|
| 687 | GString * d = NULL; |
---|
| 688 | const char * klazz = NULL, * id = NULL; |
---|
[18804] | 689 | RsvgState *state; |
---|
[18608] | 690 | char buf [G_ASCII_DTOSTR_BUF_SIZE]; |
---|
| 691 | |
---|
[18804] | 692 | /* skip over defs entries for now */ |
---|
| 693 | if (ctx->in_defs) return; |
---|
| 694 | |
---|
| 695 | state = &ctx->state[ctx->n_state - 1]; |
---|
| 696 | |
---|
[18608] | 697 | if (atts != NULL) |
---|
| 698 | { |
---|
| 699 | for (i = 0; atts[i] != NULL; i += 2) |
---|
| 700 | { |
---|
| 701 | if (!strcmp ((char *)atts[i], "cx")) |
---|
| 702 | cx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 703 | else if (!strcmp ((char *)atts[i], "cy")) |
---|
| 704 | cy = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 705 | else if (!strcmp ((char *)atts[i], "rx")) |
---|
| 706 | rx = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
---|
| 707 | else if (!strcmp ((char *)atts[i], "ry")) |
---|
| 708 | ry = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
---|
| 709 | else if (!strcmp ((char *)atts[i], "class")) |
---|
| 710 | klazz = (const char *)atts[i + 1]; |
---|
| 711 | else if (!strcmp ((char *)atts[i], "id")) |
---|
| 712 | id = (const char *)atts[i + 1]; |
---|
| 713 | } |
---|
| 714 | } |
---|
| 715 | |
---|
| 716 | if (cx < 0. || cy < 0. || rx <= 0. || ry <= 0.) |
---|
| 717 | return; |
---|
| 718 | |
---|
| 719 | rsvg_parse_style_attrs (ctx, "ellipse", klazz, id, atts); |
---|
| 720 | |
---|
| 721 | /* approximate an ellipse using 4 bezier curves */ |
---|
[18804] | 722 | |
---|
[18608] | 723 | d = g_string_new ("M "); |
---|
| 724 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + rx)); |
---|
| 725 | g_string_append_c (d, ' '); |
---|
| 726 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 727 | |
---|
| 728 | g_string_append (d, " C "); |
---|
| 729 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + rx)); |
---|
| 730 | g_string_append_c (d, ' '); |
---|
| 731 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - RSVG_ARC_MAGIC * ry)); |
---|
| 732 | g_string_append_c (d, ' '); |
---|
| 733 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + RSVG_ARC_MAGIC * rx)); |
---|
| 734 | g_string_append_c (d, ' '); |
---|
| 735 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - ry)); |
---|
| 736 | g_string_append_c (d, ' '); |
---|
| 737 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx)); |
---|
| 738 | g_string_append_c (d, ' '); |
---|
| 739 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - ry)); |
---|
| 740 | |
---|
| 741 | g_string_append (d, " C "); |
---|
| 742 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - RSVG_ARC_MAGIC * rx)); |
---|
| 743 | g_string_append_c (d, ' '); |
---|
| 744 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - ry)); |
---|
| 745 | g_string_append_c (d, ' '); |
---|
| 746 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - rx)); |
---|
| 747 | g_string_append_c (d, ' '); |
---|
| 748 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy - RSVG_ARC_MAGIC * ry)); |
---|
| 749 | g_string_append_c (d, ' '); |
---|
| 750 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - rx)); |
---|
| 751 | g_string_append_c (d, ' '); |
---|
| 752 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 753 | |
---|
| 754 | g_string_append (d, " C "); |
---|
| 755 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - rx)); |
---|
| 756 | g_string_append_c (d, ' '); |
---|
| 757 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + RSVG_ARC_MAGIC * ry)); |
---|
| 758 | g_string_append_c (d, ' '); |
---|
| 759 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx - RSVG_ARC_MAGIC * rx)); |
---|
| 760 | g_string_append_c (d, ' '); |
---|
| 761 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + ry)); |
---|
| 762 | g_string_append_c (d, ' '); |
---|
| 763 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx)); |
---|
| 764 | g_string_append_c (d, ' '); |
---|
| 765 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + ry)); |
---|
| 766 | |
---|
| 767 | g_string_append (d, " C "); |
---|
| 768 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + RSVG_ARC_MAGIC * rx)); |
---|
| 769 | g_string_append_c (d, ' '); |
---|
| 770 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + ry)); |
---|
| 771 | g_string_append_c (d, ' '); |
---|
| 772 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + rx)); |
---|
| 773 | g_string_append_c (d, ' '); |
---|
| 774 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy + RSVG_ARC_MAGIC * ry)); |
---|
| 775 | g_string_append_c (d, ' '); |
---|
| 776 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cx + rx)); |
---|
| 777 | g_string_append_c (d, ' '); |
---|
| 778 | g_string_append (d, g_ascii_dtostr (buf, sizeof (buf), cy)); |
---|
| 779 | |
---|
| 780 | g_string_append (d, " Z"); |
---|
| 781 | |
---|
| 782 | rsvg_render_path (ctx, d->str); |
---|
| 783 | g_string_free (d, TRUE); |
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| 784 | } |
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| 785 | |
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| 786 | /* TODO 1: issue with affining alpha images - this is gdkpixbuf's fault... |
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| 787 | * TODO 2: issue with rotating images - do we want to rotate the whole |
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| 788 | * canvas 2x to get this right, only to have #1 bite us? |
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| 789 | */ |
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| 790 | void |
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| 791 | rsvg_start_image (RsvgHandle *ctx, const xmlChar **atts) |
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| 792 | { |
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| 793 | int i; |
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| 794 | double x = 0., y = 0., w = -1., h = -1.; |
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| 795 | const char * href = NULL; |
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| 796 | const char * klazz = NULL, * id = NULL; |
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| 797 | |
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| 798 | GdkPixbuf *img; |
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| 799 | GError *err = NULL; |
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| 800 | |
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| 801 | gboolean has_alpha; |
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| 802 | guchar *rgb = NULL; |
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| 803 | int dest_rowstride; |
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| 804 | double tmp_affine[6]; |
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[18804] | 805 | RsvgState *state; |
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| 806 | |
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| 807 | /* skip over defs entries for now */ |
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| 808 | if (ctx->in_defs) return; |
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| 809 | |
---|
| 810 | state = &ctx->state[ctx->n_state - 1]; |
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[18608] | 811 | |
---|
| 812 | if (atts != NULL) |
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| 813 | { |
---|
| 814 | for (i = 0; atts[i] != NULL; i += 2) |
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| 815 | { |
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| 816 | if (!strcmp ((char *)atts[i], "x")) |
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| 817 | x = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
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| 818 | else if (!strcmp ((char *)atts[i], "y")) |
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| 819 | y = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
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| 820 | else if (!strcmp ((char *)atts[i], "width")) |
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| 821 | w = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->width, state->font_size); |
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| 822 | else if (!strcmp ((char *)atts[i], "height")) |
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| 823 | h = rsvg_css_parse_normalized_length ((char *)atts[i + 1], ctx->dpi, (gdouble)ctx->height, state->font_size); |
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| 824 | /* path is used by some older adobe illustrator versions */ |
---|
| 825 | else if (!strcmp ((char *)atts[i], "path") || !strcmp((char *)atts[i], "xlink:href")) |
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| 826 | href = (const char *)atts[i + 1]; |
---|
| 827 | else if (!strcmp ((char *)atts[i], "class")) |
---|
| 828 | klazz = (const char *)atts[i + 1]; |
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| 829 | else if (!strcmp ((char *)atts[i], "id")) |
---|
| 830 | id = (const char *)atts[i + 1]; |
---|
| 831 | } |
---|
| 832 | } |
---|
| 833 | |
---|
| 834 | if (!href || x < 0. || y < 0. || w <= 0. || h <= 0.) |
---|
| 835 | return; |
---|
| 836 | |
---|
| 837 | rsvg_parse_style_attrs (ctx, "image", klazz, id, atts); |
---|
| 838 | |
---|
| 839 | /* figure out if image is visible or not */ |
---|
| 840 | if (!state->visible) |
---|
| 841 | return; |
---|
| 842 | |
---|
| 843 | img = gdk_pixbuf_new_from_file (href, &err); |
---|
| 844 | |
---|
| 845 | if (!img) |
---|
| 846 | { |
---|
| 847 | if (err) |
---|
| 848 | { |
---|
| 849 | g_warning ("Couldn't load pixbuf (%s): %s\n", href, err->message); |
---|
| 850 | g_error_free (err); |
---|
| 851 | } |
---|
| 852 | return; |
---|
| 853 | } |
---|
| 854 | |
---|
| 855 | /* scale/resize the dest image */ |
---|
| 856 | art_affine_scale (tmp_affine, (double)w / (double)gdk_pixbuf_get_width (img), |
---|
| 857 | (double)h / (double)gdk_pixbuf_get_height (img)); |
---|
| 858 | art_affine_multiply (state->affine, tmp_affine, state->affine); |
---|
| 859 | |
---|
| 860 | has_alpha = gdk_pixbuf_get_has_alpha (img); |
---|
| 861 | dest_rowstride = (int)(w * (has_alpha ? 4 : 3) + 3) & ~3; |
---|
| 862 | rgb = g_new (guchar, h * dest_rowstride); |
---|
| 863 | |
---|
| 864 | if(has_alpha) |
---|
| 865 | art_rgb_rgba_affine (rgb, 0, 0, w, h, dest_rowstride, |
---|
| 866 | gdk_pixbuf_get_pixels (img), |
---|
| 867 | gdk_pixbuf_get_width (img), |
---|
| 868 | gdk_pixbuf_get_height (img), |
---|
| 869 | gdk_pixbuf_get_rowstride (img), |
---|
| 870 | state->affine, |
---|
| 871 | ART_FILTER_NEAREST, |
---|
| 872 | NULL); |
---|
| 873 | else |
---|
| 874 | art_rgb_affine (rgb, 0, 0, w, h, dest_rowstride, |
---|
| 875 | gdk_pixbuf_get_pixels (img), |
---|
| 876 | gdk_pixbuf_get_width (img), |
---|
| 877 | gdk_pixbuf_get_height (img), |
---|
| 878 | gdk_pixbuf_get_rowstride (img), |
---|
| 879 | state->affine, |
---|
| 880 | ART_FILTER_NEAREST, |
---|
| 881 | NULL); |
---|
| 882 | |
---|
| 883 | g_object_unref (G_OBJECT (img)); |
---|
| 884 | img = gdk_pixbuf_new_from_data (rgb, GDK_COLORSPACE_RGB, has_alpha, 8, w, h, dest_rowstride, NULL, NULL); |
---|
| 885 | |
---|
| 886 | if (!img) |
---|
| 887 | { |
---|
| 888 | g_free (rgb); |
---|
| 889 | return; |
---|
| 890 | } |
---|
| 891 | |
---|
| 892 | gdk_pixbuf_copy_area (img, 0, 0, |
---|
| 893 | gdk_pixbuf_get_width (img) * state->affine[0], |
---|
| 894 | gdk_pixbuf_get_height (img) * state->affine[3], |
---|
| 895 | ctx->pixbuf, |
---|
| 896 | state->affine[4] + x, |
---|
| 897 | state->affine[5] + y); |
---|
| 898 | |
---|
| 899 | g_object_unref (G_OBJECT (img)); |
---|
| 900 | g_free (rgb); |
---|
| 901 | } |
---|