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Viewing changes to libspectre/spectre-page.c

  • Committer: Bazaar Package Importer
  • Author(s): Matthew Rosewarne
  • Date: 2008-01-06 21:58:55 UTC
  • Revision ID: james.westby@ubuntu.com-20080106215855-zmmkfhf4m3190zsj
Tags: upstream-0.2.0.ds
Import upstream version 0.2.0.ds

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libspectre/spectre-page.c
 
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/* This file is part of Libspectre.
 
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 * 
 
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 * Copyright (C) 2007 Albert Astals Cid <aacid@kde.org>
 
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 * Copyright (C) 2007 Carlos Garcia Campos <carlosgc@gnome.org>
 
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 *
 
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 * Libspectre is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation; either version 2, or (at your option)
 
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 * any later version.
 
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 *
 
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 * Libspectre is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program; if not, write to the Free Software
 
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
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 */
 
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#include <stdio.h>
 
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#include <stdlib.h>
 
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#include "spectre-page.h"
 
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#include "spectre-device.h"
 
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#include "spectre-private.h"
 
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#include "spectre-utils.h"
 
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struct SpectrePage
 
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{
 
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        struct document *doc;
 
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        SpectreStatus    status;
 
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        unsigned int     index;
 
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        int              width;
 
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        int              height;
 
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};
 
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SpectrePage *
 
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_spectre_page_new (unsigned int     page_index,
 
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                   struct document *doc)
 
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{
 
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        SpectrePage *page;
 
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        page = calloc (1, sizeof (SpectrePage));
 
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        if (!page)
 
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                return NULL;
 
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        page->index = page_index;
 
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        page->width = -1;
 
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        page->height = -1;
 
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        page->doc = psdocreference (doc);
 
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        return page;
 
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}
 
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void
 
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spectre_page_free (SpectrePage *page)
 
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{
 
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        if (!page)
 
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                return;
 
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        if (page->doc) {
 
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                psdocdestroy (page->doc);
 
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                page->doc = NULL;
 
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        }
 
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        free (page);
 
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}
 
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SpectreStatus
 
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spectre_page_status (SpectrePage *page)
 
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{
 
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        _spectre_return_val_if_fail (page != NULL, SPECTRE_STATUS_INVALID_PAGE);
 
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        return page->status;
 
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}
 
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unsigned int
 
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spectre_page_get_index (SpectrePage *page)
 
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{
 
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        _spectre_return_val_if_fail (page != NULL, 0);
 
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        return page->index;
 
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}
 
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const char *
 
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spectre_page_get_label (SpectrePage *page)
 
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{
 
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        _spectre_return_val_if_fail (page != NULL, NULL);
 
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        return page->doc->numpages > 0 ? page->doc->pages[page->index].label : NULL;
 
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}
 
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SpectreOrientation
 
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spectre_page_get_orientation (SpectrePage *page)
 
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{
 
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        int page_orientation = NONE;
 
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        _spectre_return_val_if_fail (page != NULL, SPECTRE_ORIENTATION_PORTRAIT);
 
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        if (page->doc->numpages > 0) {
 
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                page_orientation = page->doc->pages[page->index].orientation != NONE ?
 
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                        page->doc->pages[page->index].orientation :
 
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                        page->doc->default_page_orientation;
 
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        }
 
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        if (page_orientation == NONE)
 
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                page_orientation = page->doc->orientation;
 
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        switch (page_orientation) {
 
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        default:
 
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        case PORTRAIT:
 
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                return SPECTRE_ORIENTATION_PORTRAIT;
 
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        case LANDSCAPE:
 
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                return SPECTRE_ORIENTATION_LANDSCAPE;
 
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        case SEASCAPE:
 
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                return SPECTRE_ORIENTATION_REVERSE_LANDSCAPE;
 
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        case UPSIDEDOWN:
 
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                return SPECTRE_ORIENTATION_REVERSE_PORTRAIT;
 
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        }
 
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}
 
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void
 
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spectre_page_get_size (SpectrePage *page,
 
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                       int         *width,
 
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                       int         *height)
 
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{
 
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        _spectre_return_if_fail (page != NULL);
 
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        if (page->width == -1 || page->height == -1) {
 
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                int urx, ury, llx, lly;
 
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                psgetpagebox (page->doc, page->index,
 
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                              &urx, &ury, &llx, &lly);
 
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                page->width = urx - llx;
 
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                page->height = ury - lly;
 
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        }
 
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        if (width)
 
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                *width = page->width;
 
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        if (height)
 
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                *height = page->height;
 
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}
 
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void
 
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spectre_page_render (SpectrePage          *page,
 
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                     SpectreRenderContext *rc,
 
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                     unsigned char       **page_data,
 
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                     int                  *row_length)
 
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{
 
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        SpectreDevice *device;
 
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        int            width, height;
 
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        _spectre_return_if_fail (page != NULL);
 
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        _spectre_return_if_fail (rc != NULL);
 
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        spectre_page_get_size (page, &width, &height);
 
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        device = spectre_device_new (page->doc);
 
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        page->status = spectre_device_render (device, page->index, rc,
 
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                                              0, 0, width, height,
 
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                                              page_data, row_length);
 
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        spectre_device_free (device);
 
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}
 
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void
 
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spectre_page_render_slice (SpectrePage          *page,
 
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                           SpectreRenderContext *rc,
 
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                           int                   x,
 
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                           int                   y,
 
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                           int                   width,
 
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                           int                   height,
 
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                           unsigned char       **page_data,
 
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                           int                  *row_length)
 
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{
 
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        SpectreDevice *device;
 
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        int            page_height;
 
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        _spectre_return_if_fail (page != NULL);
 
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        _spectre_return_if_fail (rc != NULL);
 
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        spectre_page_get_size (page, NULL, &page_height);
 
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        device = spectre_device_new (page->doc);
 
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        page->status = spectre_device_render (device, page->index, rc,
 
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                                              x, page_height - (y + height),
 
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                                              width, height,
 
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                                              page_data, row_length);
 
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        spectre_device_free (device);
 
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}