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-rw-r--r--desktop/print.c280
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diff --git a/desktop/print.c b/desktop/print.c
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+/*
+ * Copyright 2008 Adam Blokus <adamblokus@gmail.com>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * Output-in-pages implementation
+*/
+
+#include "desktop/print.h"
+#include "desktop/printer.h"
+
+#include "content/content.h"
+
+#include "utils/log.h"
+#include "utils/talloc.h"
+
+#include "render/loosen.h"
+#include "render/box.h"
+
+#include "pdf/font_haru.h"
+
+static struct content *print_init(struct content *, struct print_settings *);
+static bool print_apply_settings(struct content *, struct print_settings *);
+
+
+/*TODO: should these be passed as parameters in order to allow simultaneous
+ printings?
+*/
+static float page_content_width, page_content_height;
+static float text_margin_height;
+static struct content *printed_content;
+static float done_height;
+
+/**
+ * This function calls print setup, prints page after page until the whole
+ * content is printed calls cleaning up afterwise.
+ * \param content The content to be printed
+ * \param printer The printer interface for the printer to be used
+ * \param settings The settings for printing to use or NULL for DEFAULT
+ * \return true if successful, false otherwise
+*/
+bool print_basic_run(struct content *content,
+ const struct printer *printer,
+ struct print_settings *settings)
+{
+ bool ret = true;
+
+ if (settings == NULL)
+ settings = print_make_settings(DEFAULT);
+
+ if (!print_set_up(content, printer, settings, NULL))
+ ret = false;
+
+ while (ret && (done_height < printed_content->height) )
+ ret = print_draw_next_page(printer, settings);
+
+ print_cleanup(content, printer);
+
+ return ret;
+}
+
+/**
+ * This function prepares the content to be printed. The current browser content
+ * is duplicated and resized, printer initialization is called.
+ * \param content The content to be printed
+ * \param printer The printer interface for the printer to be used
+ * \param settings The settings for printing to use
+ * \param height updated to the height of the printed content
+ * \return true if successful, false otherwise
+*/
+bool print_set_up(struct content *content,
+ const struct printer *printer, struct print_settings *settings,
+ double *height)
+{
+
+ printed_content = print_init(content, settings);
+
+ if (!printed_content)
+ return false;
+
+ print_apply_settings(printed_content, settings);
+
+ if (height)
+ *height = printed_content->height;
+
+ printer->print_begin(settings);
+
+ done_height = 0;
+
+ return true;
+}
+
+/**
+ * This function draws one page, beginning with the height offset of done_height
+ * \param printer The printer interface for the printer to be used
+ * \param settings The settings for printing to use
+ * \return true if successful, false otherwise
+ */
+bool print_draw_next_page(const struct printer *printer,
+ struct print_settings *settings)
+{
+
+ /*TODO:Plotter will have to be duplicated and passed
+ as an argument - to allow simultaneous screen and
+ page plotting*/
+ plot = *(printer->plotter);
+
+ printer->print_next_page();
+ if( !content_redraw(printed_content,
+ 0,
+ -done_height,
+ 0,0,
+ 0,
+ 0,
+ page_content_width * settings->scale,
+ page_content_height * settings->scale,
+ settings->scale, 0xffffff))
+ return false;
+ done_height += page_content_height - text_margin_height;
+
+ return true;
+}
+
+/**
+ * The content passed to the function is duplicated with its boxes, font
+ * measuring functions are being set.
+ * \param content The content to be printed
+ * \param settings The settings for printing to use
+ * \return true if successful, false otherwise
+ */
+struct content *print_init(struct content *content,
+ struct print_settings *settings)
+{
+ struct content* printed_content;
+ struct content_user *user_sentinel;
+
+ content_add_user(content, NULL, (intptr_t)print_init, 0);
+
+ printed_content = talloc_memdup(content, content, sizeof *content);
+
+ if (!printed_content)
+ return NULL;
+
+ printed_content->data.html.bw = 0;
+
+ user_sentinel = talloc(printed_content, struct content_user);
+ user_sentinel->callback = 0;
+ user_sentinel->p1 = user_sentinel->p2 = 0;
+ user_sentinel->next = 0;
+ printed_content->user_list = user_sentinel;
+ content_add_user(printed_content, NULL, (intptr_t)print_init, 0);
+
+ printed_content->data.html.layout =
+ box_duplicate_tree(content->data.html.layout,
+ printed_content);
+
+ if (!printed_content->data.html.layout)
+ return NULL;
+
+ if (settings->font_func == NULL)
+ printed_content->data.html.font_func = &haru_nsfont;
+ else
+ printed_content->data.html.font_func = settings->font_func;
+
+ return printed_content;
+}
+
+/**
+ * The content is resized to fit page width. In case it is to wide, it is
+ * loosened.
+ * \param content The content to be printed
+ * \param settings The settings for printing to use
+ * \return true if successful, false otherwise
+ */
+bool print_apply_settings(struct content *content,
+ struct print_settings *settings)
+{
+ if (settings == NULL)
+ return false;
+
+ /*Apply settings - adjust page size etc*/
+
+ text_margin_height = settings->margins[MARGINTEXT];
+
+ page_content_width = (settings->page_width - settings->margins[MARGINLEFT] -
+ settings->margins[MARGINRIGHT]) / settings->scale;
+
+ page_content_height = (settings->page_height - settings->margins[MARGINTOP] -
+ settings->margins[MARGINBOTTOM]) / settings->scale;
+
+ content_reformat(content, page_content_width, 0);
+ LOG(("New layout applied.New height = %d ; New width = %d ",
+ content->height, content->width));
+
+ if (content->width > page_content_width)
+ return loosen_document_layout(content, content->data.html.layout,
+ page_content_width, page_content_height);
+
+ return true;
+}
+
+/**
+ * Memory allocated during printing is being freed here.
+ * \param content The original content
+ * \param printer The printer interface for the printer to be used
+ * \return true if successful, false otherwise
+ */
+bool print_cleanup(struct content *content,
+ const struct printer *printer)
+{
+ printer->print_end();
+
+ if (printed_content) {
+ content_remove_user(printed_content, NULL, (intptr_t)print_init, 0);
+ talloc_free(printed_content);
+ }
+
+ content_remove_user(content, NULL, (intptr_t)print_init, 0);
+
+ return true;
+}
+
+/**
+ * Generates one of the predefined print settings sets.
+ * \return print_settings in case if successful, NULL if unknown configuration \
+ * or lack of memory.
+ */
+struct print_settings *print_make_settings(print_configuration configuration)
+{
+
+ struct print_settings *settings;
+
+ switch (configuration){
+ case DEFAULT:
+ settings = (struct print_settings*)
+ malloc(sizeof (struct print_settings) );
+
+ if (settings == NULL)
+ return NULL;
+
+ settings->page_width = 595;
+ settings->page_height = 840;
+ settings->copies = 1;
+ /*with 0.7 the pages look the best, the value in
+ haru_nsfont_apply_style should be kept the same as this
+ */
+ settings->scale = 0.7;
+
+ settings->margins[MARGINLEFT] = 30;
+ settings->margins[MARGINRIGHT] = 30;
+ settings->margins[MARGINTOP] = 30;
+ settings->margins[MARGINBOTTOM] = 30;
+
+ settings->margins[MARGINTEXT] = 10;
+
+ settings->output = "out.pdf";
+ settings->font_func = &haru_nsfont;
+
+ break;
+
+ default:
+ return NULL;
+ }
+
+ return settings;
+}