New backend to support impress slides. Fixes bug #30867.

2006-07-11  Bastien Nocera <hadess@hadess.net>

	* Makefile.am:
	* backend/Makefile.am:
	* backend/ev-document-factory.c: (ev_document_factory_add_filters):
	* backend/ev-document-factory.h:
	* configure.ac:
	* impress/.cvsignore:
	* impress/Makefile.am:
	* impress/common.h:
	* impress/document.c: (_imp_load_xml), (imp_open), (imp_nr_pages),
	(imp_get_page), (imp_next_page), (imp_prev_page),
	(imp_get_page_no), (imp_get_page_name), (imp_get_xml), (imp_close):
	* impress/f_oasis.c: (render_object), (render_page),
	(get_geometry), (_imp_oasis_load):
	* impress/f_oo13.c: (render_object), (render_page), (get_geometry),
	(_imp_oo13_load):
	* impress/iksemel.c: (iks_malloc), (iks_free), (iks_set_mem_funcs),
	(iks_strdup), (iks_strcat), (iks_strcmp), (iks_strcasecmp),
	(iks_strncmp), (iks_strncasecmp), (iks_strlen), (iks_escape),
	(iks_unescape), (find_space), (iks_stack_new), (iks_stack_alloc),
	(iks_stack_strdup), (iks_stack_strcat), (iks_stack_stat),
	(iks_stack_delete), (iks_sax_new), (iks_sax_extend),
	(iks_parser_stack), (iks_user_data), (iks_nr_bytes),
	(iks_nr_lines), (stack_init), (stack_expand), (sax_core),
	(iks_parse), (iks_parser_reset), (iks_parser_delete), (iks_new),
	(iks_new_within), (iks_insert), (iks_insert_cdata),
	(iks_insert_attrib), (iks_insert_node), (iks_hide), (iks_delete),
	(iks_next), (iks_next_tag), (iks_prev), (iks_prev_tag),
	(iks_parent), (iks_root), (iks_child), (iks_first_tag),
	(iks_attrib), (iks_find), (iks_find_cdata), (iks_find_attrib),
	(iks_find_with_attrib), (iks_stack), (iks_type), (iks_name),
	(iks_cdata), (iks_cdata_size), (iks_has_children),
	(iks_has_attribs), (escape_size), (my_strcat), (escape),
	(iks_string), (iks_copy_within), (iks_copy), (tagHook),
	(cdataHook), (deleteHook), (iks_dom_new), (iks_set_size_hint),
	(iks_tree), (iks_load), (iks_save):
	* impress/iksemel.h:
	* impress/imposter.h:
	* impress/impress-document.c: (G_DEFINE_TYPE_WITH_CODE),
	(imp_render_draw_bezier_real), (imp_render_get_size),
	(imp_render_set_fg_color), (imp_render_draw_line),
	(imp_render_draw_rect), (imp_render_draw_polygon),
	(imp_render_draw_arc), (imp_render_draw_bezier),
	(imp_render_open_image), (imp_render_get_image_size),
	(imp_render_scale_image), (imp_render_draw_image),
	(imp_render_close_image), (imp_render_markup),
	(imp_render_get_text_size), (imp_render_draw_text),
	(impress_document_load), (impress_document_save),
	(impress_document_get_n_pages), (impress_document_get_page_size),
	(imp_render_get_from_drawable), (impress_document_render_pixbuf),
	(impress_document_finalize), (impress_document_class_init),
	(impress_document_can_get_text), (impress_document_get_info),
	(impress_document_document_iface_init),
	(impress_document_thumbnails_get_thumbnail),
	(impress_document_thumbnails_get_dimensions),
	(impress_document_document_thumbnails_iface_init),
	(impress_document_init):
	* impress/impress-document.h:
	* impress/internal.h:
	* impress/r_back.c: (_imp_fill_back):
	* impress/r_draw.c: (_imp_draw_rect), (_imp_draw_line_end),
	(_imp_draw_image), (_imp_tile_image):
	* impress/r_geometry.c: (r_parse_color), (r_get_color), (fg_color),
	(r_get_x), (r_get_y), (r_get_angle), (r_get_viewbox), (r_polygon),
	(r_polyline):
	* impress/r_gradient.c: (poly_rotate), (r_draw_gradient_simple),
	(r_draw_gradient_complex), (r_draw_gradient):
	* impress/r_style.c: (get_style), (r_get_style), (get_style_x),
	(r_get_bullet):
	* impress/r_text.c: (add_line), (add_span), (calc_sizes),
	(calc_pos), (_imp_draw_layout), (text_span), (text_p), (text_list),
	(r_text):
	* impress/render.c: (imp_create_context), (imp_context_set_page),
	(imp_context_set_step), (imp_render), (imp_delete_context):
	* impress/render.h:
	* impress/zip.c: (zip_error), (find_cd), (get_long), (get_word),
	(list_files), (zip_open), (zip_close), (find_file), (seek_file),
	(zip_load_xml), (zip_get_size), (zip_load):
	* impress/zip.h:
	* shell/ev-utils.c:

	New backend to support impress slides. Fixes bug #30867.

1 files changed, 180 insertions, 0 deletions

diff --git a/impress/f_oo13.c b/impress/f_oo13.c
new file mode 100644
index 0000000..ce84132
--- /dev/null
+++ b/impress/f_oo13.c
@@ -0,0 +1,180 @@
+/* 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 "common.h"
+#include "internal.h"
+
+//	{ "draw:text-box", r_text },
+//	{ "draw:connector", r_line },
+//	{ "draw:polyline", r_polyline },
+//	{ "draw:polygon", r_polygon },
+//	{ "draw:path", r_path },
+
+static void
+render_object(ImpRenderCtx *ctx, void *drw_data, iks *node)
+{
+	char *tag, *t;
+	ImpColor fg;
+
+	tag = iks_name(node);
+	if (strcmp(tag, "draw:g") == 0) {
+		iks *x;
+		for (x = iks_first_tag(node); x; x = iks_next_tag(x)) {
+			render_object(ctx, drw_data, x);
+		}
+	} else if (strcmp(tag, "draw:line") == 0) {
+		int x1, y1, x2, y2;
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		x1 = r_get_x(ctx, node, "svg:x1");
+		y1 = r_get_y(ctx, node, "svg:y1");
+		x2 = r_get_x(ctx, node, "svg:x2");
+		y2 = r_get_y(ctx, node, "svg:y2");
+		ctx->drw->draw_line(drw_data, x1, y1, x2, y2);
+		if (r_get_style(ctx, node, "draw:marker-start")) {
+			_imp_draw_line_end(ctx, drw_data, 0, 0, x2, y2, x1, y1);
+		}
+		if (r_get_style(ctx, node, "draw:marker-end")) {
+			_imp_draw_line_end(ctx, drw_data, 0, 0, x1, y1, x2, y2);
+		}
+	} else if (strcmp(tag, "draw:rect") == 0) {
+		int x, y, w, h, r = 0;
+		char *t;
+		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");
+		t = r_get_style(ctx, node, "draw:corner-radius");
+		if (t) r = atof(t) * ctx->fact_x;
+		t = r_get_style(ctx, node, "draw:fill");
+		if (t && strcmp(t, "none") != 0) {
+			r_get_color(ctx, node, "draw:fill-color", &fg);
+			ctx->drw->set_fg_color(drw_data, &fg);
+			_imp_draw_rect(ctx, drw_data, 1, x, y, w, h, r);
+		}
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		ctx->drw->set_fg_color(drw_data, &fg);
+		_imp_draw_rect(ctx, drw_data, 0, x, y, w, h, r);
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:ellipse") == 0 || strcmp(tag, "draw:circle") == 0) {
+		int sa, ea, fill = 0;
+		r_get_color(ctx, node, "svg:stroke-color", &fg);
+		sa = r_get_angle(node, "draw:start-angle", 0);
+		ea = r_get_angle(node, "draw:end-angle", 360);
+		if (ea > sa) ea = ea - sa; else ea = 360 + ea - sa;
+		t = r_get_style(ctx, node, "draw:fill");
+		if (t) fill = 1;
+		ctx->drw->set_fg_color(drw_data, &fg);
+		ctx->drw->draw_arc(drw_data,
+			fill,
+			r_get_x(ctx, node, "svg:x"), r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"), r_get_y(ctx, node, "svg:height"),
+			sa, ea
+		);
+	} else if (strcmp(tag, "draw:polygon") == 0) {
+		// FIXME:
+		r_polygon(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:text-box") == 0) {
+		// FIXME:
+		r_text(ctx, drw_data, node);
+	} else if (strcmp(tag, "draw:image") == 0) {
+		char *name;
+
+		name = iks_find_attrib(node, "xlink:href");
+		if (!name) return;
+		if (name[0] == '#') ++name;
+
+		_imp_draw_image(ctx, drw_data,
+			name,
+			r_get_x(ctx, node, "svg:x"),
+			r_get_y(ctx, node, "svg:y"),
+			r_get_x(ctx, node, "svg:width"),
+			r_get_y(ctx, node, "svg:height")
+		);
+	} else {
+		printf("Unknown element: %s\n", tag);
+	}
+}
+
+static void
+render_page(ImpRenderCtx *ctx, void *drw_data)
+{
+	iks *x;
+	char *element;
+	int i;
+
+	i = _imp_fill_back(ctx, drw_data, ctx->page->page);
+	element = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	if (element) {
+		x = iks_find_with_attrib(
+			iks_find(ctx->page->doc->styles, "office:master-styles"),
+			"style:master-page", "style:name", element
+		);
+		if (x) {
+			if (i == 0) _imp_fill_back(ctx, drw_data, x);
+			for (x = iks_first_tag(x); x; x = iks_next_tag(x)) {
+				if (iks_find_attrib(x, "presentation:class"))
+					continue;
+				render_object(ctx, drw_data, x);
+			}
+		}
+	}
+	for (x = iks_first_tag(ctx->page->page); x; x = iks_next_tag(x)) {
+		render_object(ctx, drw_data, x);
+	}
+}
+
+static void
+get_geometry(ImpRenderCtx *ctx)
+{
+	char *tmp;
+	iks *x, *y;
+
+	tmp = iks_find_attrib(ctx->page->page, "draw:master-page-name");
+	x = iks_find(ctx->page->doc->styles, "office:master-styles");
+	y = iks_find_with_attrib(x, "style:master-page", "style:name", tmp);
+	x = iks_find(ctx->page->doc->styles, "office:automatic-styles");
+	y = iks_find_with_attrib(x, "style:page-master", "style:name",
+		iks_find_attrib(y, "style:page-master-name"));
+	ctx->cm_w = atof(iks_find_attrib(iks_find(y, "style:properties"), "fo:page-width"));
+	ctx->cm_h = atof(iks_find_attrib(iks_find(y, "style:properties"), "fo:page-height"));
+}
+
+int
+_imp_oo13_load(ImpDoc *doc)
+{
+	ImpPage *page;
+	char *class;
+	iks *x;
+	int i;
+
+	class = iks_find_attrib(doc->content, "office:class");
+	if (iks_strcmp(class, "presentation") != 0) return IMP_NOTIMP;
+
+	x = iks_find(iks_find(doc->content, "office:body"), "draw:page");
+	if (!x) return IMP_NOTIMP;
+	i = 0;
+	for (; x; x = iks_next_tag(x)) {
+		if (strcmp(iks_name(x), "draw:page") == 0) {
+			page = iks_stack_alloc(doc->stack, sizeof(ImpPage));
+			if (!page) return IMP_NOMEM;
+			memset(page, 0, sizeof(ImpPage));
+			page->page = x;
+			page->nr = ++i;
+			page->name = iks_find_attrib(x, "draw:name");
+			page->doc = doc;
+			if (!doc->pages) doc->pages = page;
+			page->prev = doc->last_page;
+			if (doc->last_page) doc->last_page->next = page;
+			doc->last_page = page;
+		}
+	}
+	doc->nr_pages = i;
+	doc->get_geometry = get_geometry;
+	doc->render_page = render_page;
+
+	return 0;
+}