diff options
Diffstat (limited to 'backend/impress/r_geometry.c')
| -rw-r--r-- | backend/impress/r_geometry.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/backend/impress/r_geometry.c b/backend/impress/r_geometry.c new file mode 100644 index 00000000..4819821a --- /dev/null +++ b/backend/impress/r_geometry.c @@ -0,0 +1,208 @@ +/* imposter (OO.org Impress viewer) +** Copyright (C) 2003-2005 Gurer Ozen +** This code is free software; you can redistribute it and/or +** modify it under the terms of GNU General Public License. +*/ + +#include <config.h> +#include "common.h" +#include "internal.h" +#include <math.h> + +void +r_parse_color(const char *color, ImpColor *ic) +{ + unsigned int cval; + + if (1 != sscanf(color, "#%X", &cval)) return; + + ic->red = (cval & 0xFF0000) >> 8; + ic->green = cval & 0x00FF00; + ic->blue = (cval & 0xFF) << 8; +} + +int +r_get_color(ImpRenderCtx *ctx, iks *node, char *name, ImpColor *ic) +{ + char *color; + + color = r_get_style(ctx, node, name); + if (!color) return 0; + r_parse_color(color, ic); + + return 1; +} + +static void +fg_color(ImpRenderCtx *ctx, void *drw_data, iks *node, char *name) +{ + ImpColor ic; + + if (r_get_color(ctx, node, name, &ic)) { + ctx->drw->set_fg_color(drw_data, &ic); + } +} + +int +r_get_x (ImpRenderCtx *ctx, iks *node, char *name) +{ + char *val; + + val = iks_find_attrib (node, name); + if (!val) return 0; + return atof (val) * ctx->fact_x; +} + +int +r_get_y (ImpRenderCtx *ctx, iks *node, char *name) +{ + char *val; + + val = iks_find_attrib (node, name); + if (!val) return 0; + return atof (val) * ctx->fact_y; +} + +int +r_get_angle (iks *node, char *name, int def) +{ + char *tmp; + + tmp = iks_find_attrib (node, name); + if (!tmp) return def; + return atof (tmp); +} + +static int x, y, w, h; +static int px, py, pw, ph; + +static void +r_get_viewbox (iks *node) +{ + char *tmp; + + tmp = iks_find_attrib (node, "svg:viewBox"); + if (!tmp) return; + sscanf (tmp, "%d %d %d %d", &px, &py, &pw, &ph); +} + +void +r_polygon(ImpRenderCtx *ctx, void *drw_data, iks *node) +{ + char *data; + ImpPoint *points; + int i, cnt, j; + int num; + int fill = 1; + + data = r_get_style (ctx, node, "draw:fill"); + if (!data || strcmp (data, "solid") != 0) fill = 0; + + x = r_get_x (ctx, node, "svg:x"); + y = r_get_y (ctx, node, "svg:y"); + w = r_get_x (ctx, node, "svg:width"); + h = r_get_y (ctx, node, "svg:height"); + r_get_viewbox (node); + + data = iks_find_attrib (node, "draw:points"); + points = malloc (sizeof (ImpPoint) * strlen (data) / 4); + + cnt = 0; + j = 0; + num = -1; + for (i = 0; data[i]; i++) { + if (data[i] >= '0' && data[i] <= '9') { + if (num == -1) num = i; + } else { + if (num != -1) { + if (j == 0) { + points[cnt].x = atoi (data + num); + j = 1; + } else { + points[cnt++].y = atoi (data + num); + j = 0; + } + num = -1; + } + } + } + if (num != -1) { + if (j == 0) { + points[cnt].x = atoi (data + num); + } else { + points[cnt++].y = atoi (data + num); + } + } + for (i = 0; i < cnt; i++) { + points[i].x = x + points[i].x * w / pw; + points[i].y = y + points[i].y * h / ph; + } + + if (fill) { + fg_color(ctx, drw_data, node, "draw:fill-color"); + ctx->drw->draw_polygon(drw_data, 1, points, cnt); + } + fg_color(ctx, drw_data, node, "svg:stroke-color"); + ctx->drw->draw_polygon(drw_data, 0, points, cnt); + + free (points); +} + +void +r_polyline(ImpRenderCtx *ctx, void *drw_data, iks *node) +{ + char *data; + ImpPoint *points; + int i, cnt, j; + int num; + int pen_x, pen_y; + + x = r_get_x (ctx, node, "svg:x"); + y = r_get_y (ctx, node, "svg:y"); + w = r_get_x (ctx, node, "svg:width"); + h = r_get_y (ctx, node, "svg:height"); + r_get_viewbox (node); + + data = iks_find_attrib (node, "draw:points"); + points = malloc (sizeof (ImpPoint) * strlen (data) / 4); + + cnt = 0; + j = 0; + num = -1; + for (i = 0; data[i]; i++) { + if (data[i] >= '0' && data[i] <= '9') { + if (num == -1) num = i; + } else { + if (num != -1) { + if (j == 0) { + points[cnt].x = atoi (data + num); + j = 1; + } else { + points[cnt++].y = atoi (data + num); + j = 0; + } + num = -1; + } + } + } + if (num != -1) { + if (j == 0) { + points[cnt].x = atoi (data + num); + } else { + points[cnt++].y = atoi (data + num); + } + } + + pen_x = x + points[0].x * w /pw; + pen_y = y + points[0].y * h / ph; + fg_color(ctx, drw_data, node, "svg:stroke-color"); + for (i = 1; i < cnt; i++) { + int tx, ty; + tx = x + points[i].x * w / pw; + ty = y + points[i].y * h / ph; + ctx->drw->draw_line(drw_data, pen_x, pen_y, tx, ty); + pen_x = tx; + pen_y = ty; + } + free (points); +} |