Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/viewer/scrollview.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: scrollview.h
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3 // Description: ScrollView
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4 // Author: Joern Wanke
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5 //
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6 // (C) Copyright 2007, Google Inc.
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7 // Licensed under the Apache License, Version 2.0 (the "License");
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8 // you may not use this file except in compliance with the License.
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9 // You may obtain a copy of the License at
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10 // http://www.apache.org/licenses/LICENSE-2.0
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11 // Unless required by applicable law or agreed to in writing, software
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12 // distributed under the License is distributed on an "AS IS" BASIS,
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13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 // See the License for the specific language governing permissions and
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15 // limitations under the License.
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16 //
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17 ///////////////////////////////////////////////////////////////////////
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18 //
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19 // ScrollView is designed as an UI which can be run remotely. This is the
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20 // client code for it, the server part is written in java. The client consists
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21 // mainly of 2 parts:
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22 // The "core" ScrollView which sets up the remote connection,
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23 // takes care of event handling etc.
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24 // The other part of ScrollView consists of predefined API calls through LUA,
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25 // which can basically be used to get a zoomable canvas in which it is possible
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26 // to draw lines, text etc.
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27 // Technically, thanks to LUA, its even possible to bypass the here defined LUA
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28 // API calls at all and generate a java user interface from scratch (or
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29 // basically generate any kind of java program, possibly even dangerous ones).
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30
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31 #ifndef TESSERACT_VIEWER_SCROLLVIEW_H_
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32 #define TESSERACT_VIEWER_SCROLLVIEW_H_
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33
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34 #include "image.h"
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35
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36 #include <tesseract/export.h>
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37
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38 #include <cstdio>
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39 #include <memory>
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40 #include <mutex>
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41
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42 namespace tesseract {
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43
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44 #if !defined(__GNUC__) && !defined(__attribute__)
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45 # define __attribute__(attr) // compiler without support for __attribute__
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46 #endif
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47
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48 class ScrollView;
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49 class SVNetwork;
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50 class SVSemaphore;
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51 struct SVPolyLineBuffer;
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52
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53 enum SVEventType {
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54 SVET_DESTROY, // Window has been destroyed by user.
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55 SVET_EXIT, // User has destroyed the last window by clicking on the 'X'.
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56 SVET_CLICK, // Left button pressed.
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57 SVET_SELECTION, // Left button selection.
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58 SVET_INPUT, // There is some input (single key or a whole string).
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59 SVET_MOUSE, // The mouse has moved with a button pressed.
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60 SVET_MOTION, // The mouse has moved with no button pressed.
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61 SVET_HOVER, // The mouse has stayed still for a second.
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62 SVET_POPUP, // A command selected through a popup menu.
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63 SVET_MENU, // A command selected through the menubar.
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64 SVET_ANY, // Any of the above.
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65
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66 SVET_COUNT // Array sizing.
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67 };
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68
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69 struct SVEvent {
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70 ~SVEvent() {
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71 delete[] parameter;
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72 }
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73 std::unique_ptr<SVEvent> copy() const;
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74 SVEventType type = SVET_DESTROY; // What kind of event.
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75 ScrollView *window = nullptr; // Window event relates to.
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76 char *parameter = nullptr; // Any string that might have been passed as argument.
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77 int x = 0; // Coords of click or selection.
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78 int y = 0;
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79 int x_size = 0; // Size of selection.
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80 int y_size = 0;
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81 int command_id = 0; // The ID of the possibly associated event (e.g. MENU)
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82 int counter = 0; // Used to detect which kind of event to process next.
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83
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84 SVEvent() = default;
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85 SVEvent(const SVEvent &);
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86 SVEvent &operator=(const SVEvent &);
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87 };
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88
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89 // The SVEventHandler class is used for Event handling: If you register your
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90 // class as SVEventHandler to a ScrollView Window, the SVEventHandler will be
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91 // called whenever an appropriate event occurs.
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92 class TESS_API SVEventHandler {
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93 public:
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94 virtual ~SVEventHandler();
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95
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96 // Gets called by the SV Window. Does nothing on default, overwrite this
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97 // to implement the desired behaviour
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98 virtual void Notify(const SVEvent *sve) {
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99 (void)sve;
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100 }
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101 };
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102
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103 // The ScrollView class provides the external API to the scrollviewer process.
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104 // The scrollviewer process manages windows and displays images, graphics and
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105 // text while allowing the user to zoom and scroll the windows arbitrarily.
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106 // Each ScrollView class instance represents one window, and stuff is drawn in
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107 // the window through method calls on the class. The constructor is used to
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108 // create the class instance (and the window).
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109 class TESS_API ScrollView {
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110 public:
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111 // Color enum for pens and brushes.
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112 enum Color {
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113 NONE,
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114 BLACK,
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115 WHITE,
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116 RED,
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117 YELLOW,
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118 GREEN,
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119 CYAN,
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120 BLUE,
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121 MAGENTA,
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122 AQUAMARINE,
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123 DARK_SLATE_BLUE,
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124 LIGHT_BLUE,
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125 MEDIUM_BLUE,
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126 MIDNIGHT_BLUE,
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127 NAVY_BLUE,
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128 SKY_BLUE,
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129 SLATE_BLUE,
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130 STEEL_BLUE,
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131 CORAL,
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132 BROWN,
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133 SANDY_BROWN,
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134 GOLD,
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135 GOLDENROD,
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136 DARK_GREEN,
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137 DARK_OLIVE_GREEN,
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138 FOREST_GREEN,
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139 LIME_GREEN,
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140 PALE_GREEN,
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141 YELLOW_GREEN,
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142 LIGHT_GREY,
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143 DARK_SLATE_GREY,
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144 DIM_GREY,
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145 GREY,
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146 KHAKI,
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147 MAROON,
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148 ORANGE,
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149 ORCHID,
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150 PINK,
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151 PLUM,
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152 INDIAN_RED,
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153 ORANGE_RED,
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154 VIOLET_RED,
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155 SALMON,
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156 TAN,
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157 TURQUOISE,
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158 DARK_TURQUOISE,
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159 VIOLET,
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160 WHEAT,
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161 GREEN_YELLOW // Make sure this one is last.
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162 };
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163
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164 ~ScrollView();
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165
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166 #ifndef GRAPHICS_DISABLED
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167
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168 // Create a window. The pixel size of the window may be 0,0, in which case
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169 // a default size is selected based on the size of your canvas.
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170 // The canvas may not be 0,0 in size!
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171 ScrollView(const char *name, int x_pos, int y_pos, int x_size, int y_size, int x_canvas_size,
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172 int y_canvas_size);
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173 // With a flag whether the x axis is reversed.
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174 ScrollView(const char *name, int x_pos, int y_pos, int x_size, int y_size, int x_canvas_size,
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175 int y_canvas_size, bool y_axis_reversed);
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176 // Connect to a server other than localhost.
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177 ScrollView(const char *name, int x_pos, int y_pos, int x_size, int y_size, int x_canvas_size,
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178 int y_canvas_size, bool y_axis_reversed, const char *server_name);
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179 /*******************************************************************************
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180 * Event handling
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181 * To register as listener, the class has to derive from the SVEventHandler
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182 * class, which consists of a notifyMe(SVEvent*) function that should be
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183 * overwritten to process the event the way you want.
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184 *******************************************************************************/
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185
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186 // Add an Event Listener to this ScrollView Window.
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187 void AddEventHandler(SVEventHandler *listener);
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188
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189 // Block until an event of the given type is received.
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190 std::unique_ptr<SVEvent> AwaitEvent(SVEventType type);
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191
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192 /*******************************************************************************
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193 * Getters and Setters
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194 *******************************************************************************/
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195
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196 // Returns the title of the window.
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197 const char *GetName() {
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198 return window_name_;
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199 }
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200
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201 // Returns the unique ID of the window.
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202 int GetId() {
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203 return window_id_;
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204 }
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205
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206 /*******************************************************************************
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207 * API functions for LUA calls
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208 * the implementations for these can be found in svapi.cc
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209 * (keep in mind that the window is actually created through the ScrollView
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210 * constructor, so this is not listed here)
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211 *******************************************************************************/
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212
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213 // Draw an image on (x,y).
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214 void Draw(Image image, int x_pos, int y_pos);
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215
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216 // Flush buffers and update display.
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217 static void Update();
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218
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219 // Exit the program.
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220 static void Exit();
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221
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222 // Update the contents of a specific window.
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223 void UpdateWindow();
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224
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225 // Erase all content from the window, but do not destroy it.
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226 void Clear();
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227
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228 // Set pen color with an enum.
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229 void Pen(Color color);
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230
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231 // Set pen color to RGB (0-255).
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232 void Pen(int red, int green, int blue);
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233
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234 // Set pen color to RGBA (0-255).
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235 void Pen(int red, int green, int blue, int alpha);
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236
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237 // Set brush color with an enum.
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238 void Brush(Color color);
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239
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240 // Set brush color to RGB (0-255).
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241 void Brush(int red, int green, int blue);
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242
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243 // Set brush color to RGBA (0-255).
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244 void Brush(int red, int green, int blue, int alpha);
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245
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246 // Set attributes for future text, like font name (e.g.
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247 // "Times New Roman"), font size etc..
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248 // Note: The underlined flag is currently not supported
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249 void TextAttributes(const char *font, int pixel_size, bool bold, bool italic, bool underlined);
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250
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251 // Draw line from (x1,y1) to (x2,y2) with the current pencolor.
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252 void Line(int x1, int y1, int x2, int y2);
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253
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254 // Set the stroke width of the pen.
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255 void Stroke(float width);
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256
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257 // Draw a rectangle given upper left corner and lower right corner.
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258 // The current pencolor is used as outline, the brushcolor to fill the shape.
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259 void Rectangle(int x1, int y1, int x2, int y2);
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260
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261 // Draw an ellipse centered on (x,y).
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262 // The current pencolor is used as outline, the brushcolor to fill the shape.
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263 void Ellipse(int x, int y, int width, int height);
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264
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265 // Draw text with the current pencolor
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266 void Text(int x, int y, const char *mystring);
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267
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268 // Draw an image from a local filename. This should be faster than
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269 // createImage. WARNING: This only works on a local machine. This also only
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270 // works image types supported by java (like bmp,jpeg,gif,png) since the image
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271 // is opened by the server.
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272 void Draw(const char *image, int x_pos, int y_pos);
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273
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274 // Set the current position to draw from (x,y). In conjunction with...
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275 void SetCursor(int x, int y);
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276
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277 // ...this function, which draws a line from the current to (x,y) and then
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278 // sets the new position to the new (x,y), this can be used to easily draw
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279 // polygons using vertices
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280 void DrawTo(int x, int y);
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281
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282 // Set the SVWindow visible/invisible.
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283 void SetVisible(bool visible);
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284
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285 // Set the SVWindow always on top or not always on top.
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286 void AlwaysOnTop(bool b);
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287
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288 // Shows a modal dialog with "msg" as question and returns 'y' or 'n'.
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diff changeset
289 int ShowYesNoDialog(const char *msg);
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290
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291 // Shows a modal dialog with "msg" as question and returns a char* string.
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292 // Constraint: As return, only words (e.g. no whitespaces etc.) are allowed.
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293 char *ShowInputDialog(const char *msg);
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294
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295 // Adds a messagebox to the SVWindow. This way, it can show the messages...
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296 void AddMessageBox();
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297
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298 // ...which can be added by this command.
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diff changeset
299 // This is intended as an "debug" output window.
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diff changeset
300 void AddMessage(const char *message);
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parents:
diff changeset
301 void AddMessageF(const char *format, ...) __attribute__((format(printf, 2, 3)));
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diff changeset
302
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
303 // Zoom the window to the rectangle given upper left corner and
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
304 // lower right corner.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
305 void ZoomToRectangle(int x1, int y1, int x2, int y2);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
306
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
307 // Custom messages (manipulating java code directly) can be send through this.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
308 // Send a message to the server and attach the Id of the corresponding window.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
309 // Note: This should only be called if you are know what you are doing, since
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
310 // you are fiddling with the Java objects on the server directly. Calling
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
311 // this just for fun will likely break your application!
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
312 // It is public so you can actually take use of the LUA functionalities, but
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
313 // be careful!
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
314 void SendMsg(const char* msg, ...) __attribute__((format(printf, 2, 3)));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
315
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
316 // Custom messages (manipulating java code directly) can be send through this.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
317 // Send a message to the server without adding the
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
318 // window id. Used for global events like Exit().
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
319 // Note: This should only be called if you are know what you are doing, since
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
320 // you are fiddling with the Java objects on the server directly. Calling
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
321 // this just for fun will likely break your application!
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
322 // It is public so you can actually take use of the LUA functionalities, but
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
323 // be careful!
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
324 static void SendRawMessage(const char *msg);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
325
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
326 /*******************************************************************************
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
327 * Add new menu entries to parent. If parent is "", the entry gets added to
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
328 *the main menubar (toplevel).
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
329 *******************************************************************************/
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
330 // This adds a new submenu to the menubar.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
331 void MenuItem(const char *parent, const char *name);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
332
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
333 // This adds a new (normal) menu entry with an associated eventID, which
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
334 // should be unique among menubar eventIDs.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
335 void MenuItem(const char *parent, const char *name, int cmdEvent);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
336
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
337 // This adds a new checkbox entry, which might initially be flagged.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
338 void MenuItem(const char *parent, const char *name, int cmdEvent, bool flagged);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
339
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
340 // This adds a new popup submenu to the popup menu. If parent is "", the entry
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
341 // gets added at "toplevel" popupmenu.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
342 void PopupItem(const char *parent, const char *name);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
343
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
344 // This adds a new popup entry with the associated eventID, which should be
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
345 // unique among popup eventIDs.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
346 // If value and desc are given, on a click the server will ask you to modify
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
347 // the value and return the new value.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
348 void PopupItem(const char *parent, const char *name, int cmdEvent, const char *value,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
349 const char *desc);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
350
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
351 // Returns the correct Y coordinate for a window, depending on whether it
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
352 // might have to be flipped (by ySize).
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
353 int TranslateYCoordinate(int y);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
354
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
355 char Wait();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
356
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
357 private:
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
358 // Transfers a binary Image.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
359 void TransferBinaryImage(Image image);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
360 // Transfers a gray scale Image.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
361 void TransferGrayImage(Image image);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
362 // Transfers a 32-Bit Image.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
363 void Transfer32bppImage(Image image);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
364
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
365 // Sets up ScrollView, depending on the variables from the constructor.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
366 void Initialize(const char *name, int x_pos, int y_pos, int x_size, int y_size, int x_canvas_size,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
367 int y_canvas_size, bool y_axis_reversed, const char *server_name);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
368
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
369 // Send the current buffered polygon (if any) and clear it.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
370 void SendPolygon();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
371
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
372 // Start the message receiving thread.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
373 static void MessageReceiver();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
374
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
375 // Place an event into the event_table (synchronized).
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
376 void SetEvent(const SVEvent *svevent);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
377
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
378 // Wake up the semaphore.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
379 void Signal();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
380
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
381 // Returns the unique, shared network stream.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
382 static SVNetwork *GetStream() {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
383 return stream_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
384 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
385
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
386 // Starts a new event handler.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
387 // Called asynchronously whenever a new window is created.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
388 void StartEventHandler();
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
389
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
390 // Escapes the ' character with a \, so it can be processed by LUA.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
391 char *AddEscapeChars(const char *input);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
392
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
393 // The event handler for this window.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
394 SVEventHandler *event_handler_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
395 // The name of the window.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
396 const char *window_name_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
397 // The id of the window.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
398 int window_id_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
399 // The points of the currently under-construction polyline.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
400 SVPolyLineBuffer *points_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
401 // Whether the axis is reversed.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
402 bool y_axis_is_reversed_;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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403 // Set to true only after the event handler has terminated.
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404 bool event_handler_ended_;
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405 // If the y axis is reversed, flip all y values by ySize.
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406 int y_size_;
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407 // # of created windows (used to assign an id to each ScrollView* for svmap).
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408 static int nr_created_windows_;
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409 // Serial number of sent images to ensure that the viewer knows they
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410 // are distinct.
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411 static int image_index_;
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412
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413 // The stream through which the c++ client is connected to the server.
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414 static SVNetwork *stream_;
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415
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416 // Table of all the currently queued events.
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417 std::unique_ptr<SVEvent> event_table_[SVET_COUNT];
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418
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419 // Mutex to access the event_table_ in a synchronized fashion.
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420 std::mutex mutex_;
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421
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422 // Semaphore to the thread belonging to this window.
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423 SVSemaphore *semaphore_;
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424 #endif // !GRAPHICS_DISABLED
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425 };
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426
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427 } // namespace tesseract
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428
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429 #endif // TESSERACT_VIEWER_SCROLLVIEW_H_