1 | /* |
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2 | |
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3 | Copyright 2012-2014 Adam Reichold |
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4 | |
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5 | This file is part of qpdfview. |
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6 | |
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7 | qpdfview is free software: you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation, either version 2 of the License, or |
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10 | (at your option) any later version. |
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11 | |
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12 | qpdfview is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public License |
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18 | along with qpdfview. If not, see <http://www.gnu.org/licenses/>. |
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19 | |
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20 | */ |
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21 | |
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22 | #ifndef PAGEITEM_H |
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23 | #define PAGEITEM_H |
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24 | |
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25 | #include <QCache> |
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26 | #include <QGraphicsObject> |
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27 | #include <QIcon> |
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28 | #include <QSet> |
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29 | |
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30 | class QGraphicsProxyWidget; |
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31 | |
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32 | #include "renderparam.h" |
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33 | |
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34 | namespace qpdfview |
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35 | { |
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36 | |
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37 | namespace Model |
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38 | { |
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39 | struct Link; |
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40 | class Annotation; |
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41 | class FormField; |
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42 | class Page; |
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43 | } |
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44 | |
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45 | class Settings; |
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46 | class RenderTask; |
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47 | class TileItem; |
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48 | |
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49 | class PageItem : public QGraphicsObject |
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50 | { |
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51 | Q_OBJECT |
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52 | |
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53 | friend class TileItem; |
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54 | |
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55 | public: |
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56 | enum PaintMode |
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57 | { |
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58 | DefaultMode, |
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59 | PresentationMode, |
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60 | ThumbnailMode |
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61 | }; |
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62 | |
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63 | PageItem(Model::Page* page, int index, PaintMode paintMode = DefaultMode, QGraphicsItem* parent = 0); |
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64 | ~PageItem(); |
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65 | |
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66 | const QRectF& uncroppedBoundingRect() const { return m_boundingRect; } |
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67 | |
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68 | QRectF boundingRect() const; |
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69 | void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget*); |
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70 | |
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71 | int index() const { return m_index; } |
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72 | |
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73 | const QSizeF& size() const { return m_size; } |
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74 | |
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75 | QSizeF displayedSize() const { return displayedSize(renderParam()); } |
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76 | QSizeF displayedSize(const RenderParam& renderParam) const; |
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77 | |
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78 | const QList< QRectF >& highlights() const { return m_highlights; } |
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79 | void setHighlights(const QList< QRectF >& highlights); |
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80 | |
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81 | RubberBandMode rubberBandMode() const { return m_rubberBandMode; } |
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82 | void setRubberBandMode(RubberBandMode rubberBandMode); |
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83 | |
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84 | bool showsAnnotationOverlay() const { return !m_annotationOverlay.isEmpty(); } |
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85 | bool showsFormFieldOverlay() const { return !m_formFieldOverlay.isEmpty(); } |
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86 | |
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87 | const RenderParam& renderParam() const { return m_renderParam; } |
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88 | void setRenderParam(const RenderParam& renderParam); |
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89 | |
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90 | const QTransform& transform() const { return m_transform; } |
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91 | const QTransform& normalizedTransform() const { return m_normalizedTransform; } |
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92 | |
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93 | QPointF sourcePos(const QPointF& point) const { return m_transform.inverted().map(point); } |
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94 | QPointF normalizedSourcePos(const QPointF& point) const { return m_normalizedTransform.inverted().map(point); } |
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95 | |
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96 | signals: |
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97 | void cropRectChanged(); |
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98 | |
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99 | void linkClicked(bool newTab, int page, qreal left = qQNaN(), qreal top = qQNaN()); |
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100 | void linkClicked(bool newTab, const QString& fileName, int page); |
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101 | void linkClicked(const QString& url); |
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102 | |
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103 | void rubberBandStarted(); |
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104 | void rubberBandFinished(); |
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105 | |
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106 | void zoomToSelection(int page, const QRectF& rect); |
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107 | |
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108 | void wasModified(); |
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109 | |
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110 | public slots: |
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111 | void refresh(bool keepObsoletePixmaps = false, bool dropCachedPixmaps = false); |
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112 | |
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113 | int startRender(bool prefetch = false); |
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114 | void cancelRender(); |
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115 | |
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116 | protected slots: |
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117 | void showAnnotationOverlay(Model::Annotation* selectedAnnotation); |
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118 | void hideAnnotationOverlay(bool deleteLater = true); |
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119 | void updateAnnotationOverlay(); |
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120 | |
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121 | void showFormFieldOverlay(Model::FormField* selectedFormField); |
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122 | void hideFormFieldOverlay(bool deleteLater = true); |
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123 | void updateFormFieldOverlay(); |
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124 | |
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125 | protected: |
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126 | void hoverEnterEvent(QGraphicsSceneHoverEvent*); |
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127 | void hoverMoveEvent(QGraphicsSceneHoverEvent* event); |
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128 | void hoverLeaveEvent(QGraphicsSceneHoverEvent*); |
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129 | |
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130 | void mousePressEvent(QGraphicsSceneMouseEvent* event); |
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131 | void mouseMoveEvent(QGraphicsSceneMouseEvent* event); |
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132 | void mouseReleaseEvent(QGraphicsSceneMouseEvent* event); |
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133 | |
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134 | void contextMenuEvent(QGraphicsSceneContextMenuEvent* event); |
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135 | |
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136 | private slots: |
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137 | virtual void loadInteractiveElements(); |
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138 | |
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139 | private: |
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140 | Q_DISABLE_COPY(PageItem) |
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141 | |
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142 | static Settings* s_settings; |
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143 | |
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144 | Model::Page* m_page; |
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145 | QSizeF m_size; |
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146 | |
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147 | QRectF m_cropRect; |
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148 | |
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149 | void updateCropRect(); |
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150 | |
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151 | int m_index; |
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152 | PaintMode m_paintMode; |
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153 | |
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154 | bool presentationMode() const; |
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155 | bool thumbnailMode() const; |
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156 | |
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157 | bool useTiling() const; |
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158 | |
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159 | QList< QRectF > m_highlights; |
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160 | |
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161 | // interactive elements |
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162 | |
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163 | QList< Model::Link* > m_links; |
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164 | QList< Model::Annotation* > m_annotations; |
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165 | QList< Model::FormField* > m_formFields; |
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166 | |
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167 | RubberBandMode m_rubberBandMode; |
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168 | QRectF m_rubberBand; |
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169 | |
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170 | void copyToClipboard(const QPoint& screenPos); |
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171 | void addAnnotation(const QPoint& screenPos); |
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172 | |
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173 | void showLinkContextMenu(Model::Link* link, const QPoint& screenPos); |
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174 | void showAnnotationContextMenu(Model::Annotation* annotation, const QPoint& screenPos); |
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175 | |
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176 | // overlay |
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177 | |
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178 | typedef QMap< Model::Annotation*, QGraphicsProxyWidget* > AnnotationOverlay; |
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179 | AnnotationOverlay m_annotationOverlay; |
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180 | |
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181 | typedef QMap< Model::FormField*, QGraphicsProxyWidget* > FormFieldOverlay; |
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182 | FormFieldOverlay m_formFieldOverlay; |
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183 | |
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184 | template< typename Overlay, typename Element > void showOverlay(Overlay& overlay, const char* hideOverlay, const QList< Element* >& elements, Element* selectedElement); |
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185 | template< typename Overlay, typename Element > void addProxy(Overlay& overlay, const char* hideOverlay, Element* element); |
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186 | template< typename Overlay > void hideOverlay(Overlay& overlay, bool deleteLater); |
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187 | template< typename Overlay > void updateOverlay(const Overlay& overlay) const; |
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188 | |
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189 | void setProxyGeometry(Model::Annotation* annotation, QGraphicsProxyWidget* proxy) const; |
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190 | void setProxyGeometry(Model::FormField* formField, QGraphicsProxyWidget* proxy) const; |
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191 | |
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192 | // geometry |
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193 | |
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194 | RenderParam m_renderParam; |
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195 | |
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196 | QTransform m_transform; |
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197 | QTransform m_normalizedTransform; |
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198 | QRectF m_boundingRect; |
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199 | |
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200 | void prepareGeometry(); |
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201 | |
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202 | QVector< TileItem* > m_tileItems; |
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203 | mutable QSet< TileItem* > m_exposedTileItems; |
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204 | |
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205 | void prepareTiling(); |
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206 | |
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207 | // paint |
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208 | |
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209 | void paintPage(QPainter* painter, const QRectF& exposedRect) const; |
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210 | |
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211 | void paintLinks(QPainter* painter) const; |
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212 | void paintFormFields(QPainter* painter) const; |
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213 | |
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214 | void paintHighlights(QPainter* painter) const; |
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215 | void paintRubberBand(QPainter* painter) const; |
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216 | |
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217 | }; |
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218 | |
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219 | } // qpdfview |
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220 | |
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221 | #endif // PAGEITEM_H |
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