1 | /* |
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2 | |
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3 | Copyright 2015 Martin Banky |
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4 | Copyright 2014-2015 Adam Reichold |
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5 | |
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6 | This file is part of qpdfview. |
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7 | |
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8 | qpdfview is free software: you can redistribute it and/or modify |
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9 | it under the terms of the GNU General Public License as published by |
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10 | the Free Software Foundation, either version 2 of the License, or |
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11 | (at your option) any later version. |
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12 | |
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13 | qpdfview 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 |
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16 | GNU 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 General Public License |
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19 | along with qpdfview. If not, see <http://www.gnu.org/licenses/>. |
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20 | |
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21 | */ |
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22 | |
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23 | #include "fitzmodel.h" |
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24 | |
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25 | #include <QFile> |
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26 | #include <qmath.h> |
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27 | |
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28 | extern "C" |
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29 | { |
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30 | |
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31 | #include <mupdf/fitz/display-list.h> |
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32 | #include <mupdf/fitz/document.h> |
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33 | |
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34 | typedef struct pdf_document_s pdf_document; |
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35 | |
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36 | pdf_document* pdf_specifics(fz_context*, fz_document*); |
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37 | |
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38 | } |
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39 | |
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40 | namespace |
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41 | { |
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42 | |
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43 | using namespace qpdfview; |
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44 | using namespace qpdfview::Model; |
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45 | |
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46 | void loadOutline(fz_outline* outline, QStandardItem* parent) |
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47 | { |
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48 | QStandardItem* item = new QStandardItem(QString::fromUtf8(outline->title)); |
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49 | item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable); |
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50 | |
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51 | if(outline->dest.kind != FZ_LINK_NONE) |
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52 | { |
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53 | const int page = outline->dest.ld.gotor.page + 1; |
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54 | |
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55 | item->setData(page, Document::PageRole); |
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56 | |
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57 | QStandardItem* pageItem = item->clone(); |
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58 | pageItem->setText(QString::number(page)); |
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59 | pageItem->setTextAlignment(Qt::AlignRight); |
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60 | |
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61 | parent->appendRow(QList< QStandardItem* >() << item << pageItem); |
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62 | } |
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63 | else |
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64 | { |
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65 | parent->appendRow(item); |
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66 | } |
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67 | |
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68 | if(outline->next != 0) |
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69 | { |
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70 | loadOutline(outline->next, parent); |
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71 | } |
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72 | |
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73 | if(outline->down != 0) |
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74 | { |
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75 | loadOutline(outline->down, item); |
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76 | } |
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77 | } |
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78 | |
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79 | } // anonymous |
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80 | |
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81 | namespace qpdfview |
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82 | { |
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83 | |
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84 | namespace Model |
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85 | { |
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86 | |
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87 | FitzPage::FitzPage(const FitzDocument* parent, fz_page* page) : |
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88 | m_parent(parent), |
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89 | m_page(page) |
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90 | { |
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91 | } |
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92 | |
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93 | FitzPage::~FitzPage() |
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94 | { |
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95 | fz_drop_page(m_parent->m_context, m_page); |
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96 | } |
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97 | |
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98 | QSizeF FitzPage::size() const |
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99 | { |
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100 | QMutexLocker mutexLocker(&m_parent->m_mutex); |
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101 | |
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102 | fz_rect rect; |
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103 | fz_bound_page(m_parent->m_context, m_page, &rect); |
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104 | |
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105 | return QSizeF(rect.x1 - rect.x0, rect.y1 - rect.y0); |
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106 | } |
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107 | |
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108 | QImage FitzPage::render(qreal horizontalResolution, qreal verticalResolution, Rotation rotation, const QRect& boundingRect) const |
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109 | { |
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110 | QMutexLocker mutexLocker(&m_parent->m_mutex); |
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111 | |
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112 | fz_matrix matrix; |
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113 | |
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114 | fz_scale(&matrix, horizontalResolution / 72.0f, verticalResolution / 72.0f); |
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115 | |
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116 | switch(rotation) |
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117 | { |
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118 | default: |
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119 | case RotateBy0: |
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120 | fz_pre_rotate(&matrix, 0.0); |
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121 | break; |
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122 | case RotateBy90: |
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123 | fz_pre_rotate(&matrix, 90.0); |
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124 | break; |
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125 | case RotateBy180: |
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126 | fz_pre_rotate(&matrix, 180.0); |
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127 | break; |
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128 | case RotateBy270: |
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129 | fz_pre_rotate(&matrix, 270.0); |
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130 | break; |
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131 | } |
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132 | |
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133 | fz_rect rect; |
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134 | fz_bound_page(m_parent->m_context, m_page, &rect); |
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135 | fz_transform_rect(&rect, &matrix); |
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136 | |
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137 | fz_irect irect; |
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138 | fz_round_rect(&irect, &rect); |
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139 | |
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140 | |
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141 | fz_context* context = fz_clone_context(m_parent->m_context); |
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142 | fz_display_list* display_list = fz_new_display_list(context); |
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143 | |
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144 | fz_device* device = fz_new_list_device(context, display_list); |
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145 | fz_run_page(m_parent->m_context, m_page, device, &matrix, 0); |
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146 | fz_drop_device(m_parent->m_context, device); |
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147 | |
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148 | |
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149 | mutexLocker.unlock(); |
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150 | |
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151 | |
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152 | fz_matrix tileMatrix; |
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153 | fz_translate(&tileMatrix, -rect.x0, -rect.y0); |
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154 | |
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155 | fz_rect tileRect = fz_infinite_rect; |
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156 | |
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157 | int tileWidth = irect.x1 - irect.x0; |
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158 | int tileHeight = irect.y1 - irect.y0; |
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159 | |
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160 | if(!boundingRect.isNull()) |
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161 | { |
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162 | fz_pre_translate(&tileMatrix, -boundingRect.x(), -boundingRect.y()); |
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163 | |
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164 | tileRect.x0 = tileRect.y0 = 0.0; |
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165 | |
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166 | tileWidth = tileRect.x1 = boundingRect.width(); |
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167 | tileHeight = tileRect.y1 = boundingRect.height(); |
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168 | } |
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169 | |
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170 | |
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171 | QImage image(tileWidth, tileHeight, QImage::Format_RGB32); |
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172 | image.fill(m_parent->m_paperColor); |
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173 | |
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174 | fz_pixmap* pixmap = fz_new_pixmap_with_data(context, fz_device_bgr(context), image.width(), image.height(), image.bits()); |
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175 | |
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176 | device = fz_new_draw_device(context, pixmap); |
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177 | fz_run_display_list(context, display_list, device, &tileMatrix, &tileRect, 0); |
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178 | fz_drop_device(context, device); |
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179 | |
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180 | fz_drop_pixmap(context, pixmap); |
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181 | fz_drop_display_list(context, display_list); |
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182 | fz_drop_context(context); |
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183 | |
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184 | return image; |
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185 | } |
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186 | |
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187 | QList< Link* > FitzPage::links() const |
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188 | { |
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189 | QMutexLocker mutexLocker(&m_parent->m_mutex); |
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190 | |
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191 | QList< Link* > links; |
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192 | |
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193 | fz_rect rect; |
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194 | fz_bound_page(m_parent->m_context, m_page, &rect); |
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195 | |
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196 | const qreal width = qAbs(rect.x1 - rect.x0); |
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197 | const qreal height = qAbs(rect.y1 - rect.y0); |
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198 | |
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199 | fz_link* first_link = fz_load_links(m_parent->m_context, m_page); |
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200 | |
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201 | for(fz_link* link = first_link; link != 0; link = link->next) |
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202 | { |
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203 | const QRectF boundary = QRectF(link->rect.x0 / width, link->rect.y0 / height, (link->rect.x1 - link->rect.x0) / width, (link->rect.y1 - link->rect.y0) / height).normalized(); |
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204 | |
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205 | if(link->dest.kind == FZ_LINK_GOTO) |
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206 | { |
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207 | const int page = link->dest.ld.gotor.page + 1; |
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208 | |
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209 | links.append(new Link(boundary, page)); |
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210 | } |
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211 | else if(link->dest.kind == FZ_LINK_GOTOR) |
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212 | { |
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213 | const int page = link->dest.ld.gotor.page + 1; |
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214 | |
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215 | if(link->dest.ld.gotor.file_spec != 0) |
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216 | { |
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217 | links.append(new Link(boundary, QString::fromUtf8(link->dest.ld.gotor.file_spec), page)); |
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218 | } |
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219 | else |
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220 | { |
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221 | links.append(new Link(boundary, page)); |
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222 | } |
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223 | } |
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224 | else if(link->dest.kind == FZ_LINK_URI) |
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225 | { |
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226 | const QString url = QString::fromUtf8(link->dest.ld.uri.uri); |
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227 | |
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228 | links.append(new Link(boundary, url)); |
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229 | } |
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230 | else if(link->dest.kind == FZ_LINK_LAUNCH) |
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231 | { |
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232 | const QString url = QString::fromUtf8(link->dest.ld.launch.file_spec); |
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233 | |
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234 | links.append(new Link(boundary, url)); |
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235 | } |
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236 | } |
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237 | |
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238 | fz_drop_link(m_parent->m_context, first_link); |
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239 | |
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240 | return links; |
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241 | } |
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242 | |
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243 | FitzDocument::FitzDocument(fz_context* context, fz_document* document) : |
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244 | m_mutex(), |
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245 | m_context(context), |
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246 | m_document(document), |
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247 | m_paperColor(Qt::white) |
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248 | { |
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249 | } |
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250 | |
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251 | FitzDocument::~FitzDocument() |
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252 | { |
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253 | fz_drop_document(m_context, m_document); |
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254 | fz_drop_context(m_context); |
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255 | } |
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256 | |
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257 | int FitzDocument::numberOfPages() const |
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258 | { |
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259 | QMutexLocker mutexLocker(&m_mutex); |
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260 | |
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261 | return fz_count_pages(m_context, m_document); |
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262 | } |
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263 | |
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264 | Page* FitzDocument::page(int index) const |
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265 | { |
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266 | QMutexLocker mutexLocker(&m_mutex); |
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267 | |
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268 | fz_page* page = fz_load_page(m_context, m_document, index); |
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269 | |
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270 | return page != 0 ? new FitzPage(this, page) : 0; |
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271 | } |
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272 | |
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273 | bool FitzDocument::canBePrintedUsingCUPS() const |
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274 | { |
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275 | QMutexLocker mutexLocker(&m_mutex); |
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276 | |
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277 | return pdf_specifics(m_context, m_document) != 0; |
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278 | } |
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279 | |
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280 | void FitzDocument::setPaperColor(const QColor& paperColor) |
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281 | { |
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282 | m_paperColor = paperColor; |
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283 | } |
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284 | |
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285 | void FitzDocument::loadOutline(QStandardItemModel* outlineModel) const |
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286 | { |
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287 | Document::loadOutline(outlineModel); |
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288 | |
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289 | QMutexLocker mutexLocker(&m_mutex); |
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290 | |
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291 | fz_outline* outline = fz_load_outline(m_context, m_document); |
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292 | |
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293 | if(outline != 0) |
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294 | { |
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295 | ::loadOutline(outline, outlineModel->invisibleRootItem()); |
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296 | |
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297 | fz_drop_outline(m_context, outline); |
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298 | } |
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299 | } |
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300 | |
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301 | } // Model |
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302 | |
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303 | FitzPlugin::FitzPlugin(QObject* parent) : QObject(parent) |
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304 | { |
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305 | setObjectName("FitzPlugin"); |
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306 | |
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307 | m_locks_context.user = this; |
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308 | m_locks_context.lock = FitzPlugin::lock; |
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309 | m_locks_context.unlock = FitzPlugin::unlock; |
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310 | |
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311 | m_context = fz_new_context(0, &m_locks_context, FZ_STORE_DEFAULT); |
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312 | |
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313 | fz_register_document_handlers(m_context); |
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314 | } |
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315 | |
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316 | FitzPlugin::~FitzPlugin() |
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317 | { |
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318 | fz_drop_context(m_context); |
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319 | } |
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320 | |
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321 | Model::Document* FitzPlugin::loadDocument(const QString& filePath) const |
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322 | { |
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323 | fz_context* context = fz_clone_context(m_context); |
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324 | |
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325 | if(context == 0) |
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326 | { |
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327 | return 0; |
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328 | } |
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329 | |
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330 | #ifdef _MSC_VER |
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331 | |
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332 | fz_document* document = fz_open_document(context, filePath.toUtf8()); |
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333 | |
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334 | #else |
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335 | |
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336 | fz_document* document = fz_open_document(context, QFile::encodeName(filePath)); |
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337 | |
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338 | #endif // _MSC_VER |
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339 | |
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340 | if(document == 0) |
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341 | { |
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342 | fz_drop_context(context); |
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343 | |
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344 | return 0; |
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345 | } |
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346 | |
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347 | return new Model::FitzDocument(context, document); |
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348 | } |
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349 | |
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350 | void FitzPlugin::lock(void* user, int lock) |
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351 | { |
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352 | static_cast< FitzPlugin* >(user)->m_mutex[lock].lock(); |
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353 | } |
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354 | |
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355 | void FitzPlugin::unlock(void* user, int lock) |
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356 | { |
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357 | static_cast< FitzPlugin* >(user)->m_mutex[lock].unlock(); |
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358 | } |
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359 | |
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360 | } // qpdfview |
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361 | |
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362 | #if QT_VERSION < QT_VERSION_CHECK(5,0,0) |
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363 | |
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364 | Q_EXPORT_PLUGIN2(qpdfview_fitz, qpdfview::FitzPlugin) |
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365 | |
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366 | #endif // QT_VERSION |
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