1 | // ================================================================ // |
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2 | // // |
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3 | // File : arb_progress.h // |
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4 | // Purpose : // |
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5 | // // |
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6 | // Coded by Ralf Westram (coder@reallysoft.de) in November 2010 // |
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7 | // Institute of Microbiology (Technical University Munich) // |
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8 | // http://www.arb-home.de/ // |
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9 | // // |
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10 | // ================================================================ // |
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11 | |
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12 | #ifndef ARB_PROGRESS_H |
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13 | #define ARB_PROGRESS_H |
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14 | |
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15 | #ifndef ARB_ASSERT_H |
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16 | #include <arb_assert.h> |
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17 | #endif |
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18 | #ifndef ARB_ERROR_H |
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19 | #include <arb_error.h> |
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20 | #endif |
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21 | #ifndef ARBTOOLS_H |
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22 | #include <arbtools.h> |
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23 | #endif |
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24 | |
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25 | #if defined(DEBUG) |
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26 | #if defined(DEVEL_RALF) |
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27 | #define DUMP_PROGRESS |
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28 | #define TEST_COUNTERS |
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29 | #endif |
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30 | #endif |
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31 | |
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32 | |
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33 | class arb_parent_progress; |
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34 | struct arb_status_implementation; |
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35 | |
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36 | class arb_progress_counter : virtual Noncopyable { |
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37 | protected: |
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38 | arb_parent_progress *progress; |
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39 | public: |
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40 | arb_progress_counter(arb_parent_progress *progress_) |
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41 | : progress(progress_) |
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42 | {} |
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43 | virtual ~arb_progress_counter() {} |
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44 | |
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45 | virtual void inc() = 0; |
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46 | virtual void implicit_inc() = 0; |
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47 | virtual void child_updates_gauge(double gauge) = 0; |
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48 | virtual void done() = 0; |
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49 | virtual void force_update() = 0; |
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50 | virtual void restart(int overall_count) = 0; |
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51 | virtual void auto_subtitles(const char *prefix) = 0; |
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52 | virtual bool has_auto_subtitles() = 0; |
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53 | |
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54 | #if defined(DUMP_PROGRESS) |
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55 | virtual void dump() = 0; |
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56 | #endif |
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57 | |
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58 | virtual arb_progress_counter *clone(arb_parent_progress *parent, int overall_count) const = 0; |
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59 | }; |
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60 | |
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61 | const int LEVEL_TITLE = 0; |
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62 | const int LEVEL_SUBTITLE = 1; |
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63 | |
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64 | class arb_parent_progress : virtual Noncopyable { |
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65 | arb_parent_progress *prev_recent; |
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66 | bool reuse_allowed; // display may be reused by childs |
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67 | |
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68 | protected: |
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69 | #if defined(DUMP_PROGRESS) |
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70 | char *name; |
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71 | #endif |
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72 | |
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73 | bool has_title; |
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74 | arb_progress_counter *counter; |
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75 | |
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76 | static arb_parent_progress *recent; |
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77 | static arb_status_implementation *impl; // defines implementation to display status |
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78 | |
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79 | virtual SmartPtr<arb_parent_progress> create_child_progress(const char *title, int overall_count) = 0; |
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80 | |
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81 | arb_parent_progress(arb_progress_counter *counter_, bool has_title_) |
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82 | : reuse_allowed(false), |
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83 | has_title(has_title_), |
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84 | counter(counter_) |
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85 | { |
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86 | prev_recent = recent; |
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87 | recent = this; |
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88 | |
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89 | #if defined(DUMP_PROGRESS) |
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90 | name = NULL; |
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91 | #endif |
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92 | |
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93 | #if defined(TEST_COUNTERS) |
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94 | accept_invalid_counters = false; |
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95 | #endif |
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96 | } |
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97 | public: |
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98 | #if defined(TEST_COUNTERS) |
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99 | bool accept_invalid_counters; // if true, do not complain about unfinished counters |
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100 | #endif |
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101 | |
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102 | virtual ~arb_parent_progress() { |
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103 | delete counter; |
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104 | recent = prev_recent; |
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105 | #if defined(DUMP_PROGRESS) |
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106 | free(name); |
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107 | #endif |
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108 | } |
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109 | |
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110 | static SmartPtr<arb_parent_progress> create(const char *title, int overall_count); |
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111 | static SmartPtr<arb_parent_progress> create_suppressor(); |
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112 | |
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113 | virtual bool aborted() const = 0; |
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114 | virtual void set_text(int level, const char *text) = 0; |
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115 | virtual void update_gauge(double gauge) = 0; |
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116 | |
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117 | #if defined(DUMP_PROGRESS) |
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118 | virtual void dump(); |
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119 | #endif |
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120 | |
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121 | void child_sets_text(int level, const char *text) { |
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122 | set_text(level+1-reuse_allowed+counter->has_auto_subtitles(), text); |
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123 | } |
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124 | void allow_title_reuse() { reuse_allowed = true; } |
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125 | |
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126 | void child_updates_gauge(double gauge) { counter->child_updates_gauge(gauge); } |
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127 | void child_terminated() { counter->implicit_inc(); } |
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128 | |
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129 | arb_progress_counter *clone_counter(int overall_count) { return counter->clone(this, overall_count); } |
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130 | void initial_update() { counter->force_update(); } |
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131 | void force_update() { counter->force_update(); } |
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132 | |
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133 | void inc() { counter->inc(); } |
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134 | void done() { counter->done(); } |
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135 | void auto_subtitles(const char *prefix) { counter->auto_subtitles(prefix); } |
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136 | |
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137 | static void show_comment(const char *comment) { |
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138 | if (recent) recent->set_text(LEVEL_SUBTITLE, comment); |
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139 | } |
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140 | }; |
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141 | |
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142 | class arb_progress { |
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143 | SmartPtr<arb_parent_progress> used; |
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144 | |
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145 | void setup(const char *title, int overall_count) { |
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146 | used = arb_parent_progress::create(title, overall_count); |
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147 | used->initial_update(); |
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148 | } |
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149 | // cppcheck-suppress functionConst |
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150 | void accept_invalid_counters() { |
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151 | #if defined(TEST_COUNTERS) |
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152 | used->accept_invalid_counters = true; |
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153 | #endif |
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154 | } |
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155 | |
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156 | public: |
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157 | // ------------------------------ |
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158 | // recommended interface: |
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159 | |
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160 | arb_progress(const char *title, int overall_count) { |
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161 | // open a progress indicator |
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162 | // |
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163 | // expects to be incremented 'overall_count' times |
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164 | // incrementation is done either |
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165 | // - explicitely by calling one of the inc...()-functions below or |
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166 | // - implicitely by creating another arb_progress while this one remains |
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167 | // |
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168 | // if you can't ahead-determine the exact number of incrementations, |
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169 | // specify an upper-limit and call .done() before dtor. |
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170 | |
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171 | arb_assert(overall_count >= 0); |
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172 | setup(title, overall_count); |
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173 | } |
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174 | explicit arb_progress(const char *title) { |
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175 | // open a wrapping progress indicator |
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176 | // |
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177 | // expects NOT to be incremented explicitely! |
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178 | // if arb_progresses are created while this exists, they reuse the progress window. |
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179 | // Useful to avoid spamming the user with numerous popping-up progress windows. |
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180 | setup(title, 0); |
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181 | } |
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182 | explicit arb_progress(int overall_count) { |
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183 | // open counting progress (reuses text of parent progress). |
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184 | // |
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185 | // Useful to separate text- from gauge-display or |
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186 | // to summarize several consecutive child-progresses into one. |
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187 | setup(NULL, overall_count); |
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188 | } |
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189 | arb_progress() { |
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190 | // plain wrapper (avoids multiple implicit increments of its parent). |
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191 | // |
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192 | // usage-conditions: |
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193 | // * caller increments progress in a loop and |
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194 | // * loop calls one or more callees and callees open multiple progress bars. |
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195 | // |
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196 | // in this case the parent progress would be implicitely incremented several times |
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197 | // per loop, resulting in wrong gauge. |
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198 | // |
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199 | // if you know the number of opened progresses, use arb_progress(int), |
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200 | // otherwise add one wrapper-progress into the loop. |
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201 | setup(NULL, 0); |
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202 | } |
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203 | |
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204 | void allow_title_reuse() { used->allow_title_reuse(); } |
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205 | |
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206 | void subtitle(const char *stitle) { used->set_text(LEVEL_SUBTITLE, stitle); } |
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207 | |
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208 | GB_ERROR error_if_aborted() { |
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209 | return aborted() ? "Operation aborted on user request" : NULL; |
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210 | } |
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211 | |
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212 | GB_ERROR inc_and_error_if_aborted() { |
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213 | inc(); |
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214 | return error_if_aborted(); |
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215 | } |
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216 | |
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217 | void inc_and_check_user_abort(GB_ERROR& error) { if (!error) error = inc_and_error_if_aborted(); else accept_invalid_counters(); } |
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218 | void inc_and_check_user_abort(ARB_ERROR& error) { if (!error) error = inc_and_error_if_aborted(); else accept_invalid_counters(); } |
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219 | |
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220 | bool aborted() { |
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221 | // true if user pressed "Abort" |
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222 | bool aborted_ = used->aborted(); |
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223 | #if defined(TEST_COUNTERS) |
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224 | if (aborted_) accept_invalid_counters(); |
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225 | #endif |
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226 | return aborted_; |
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227 | } |
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228 | |
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229 | void auto_subtitles(const char *prefix) { |
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230 | // automatically update subtitles ("prefix #/#") |
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231 | // prefix = NULL -> switch off |
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232 | used->auto_subtitles(prefix); |
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233 | } |
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234 | static void show_comment(const char *comment) { |
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235 | // Like subtitle(), but w/o needing to know anything about a eventually open progress |
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236 | // e.g. used to show ARB is connecting to ptserver |
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237 | arb_parent_progress::show_comment(comment); |
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238 | } |
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239 | |
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240 | // ------------------------------ |
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241 | // less recommended interface: |
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242 | |
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243 | void inc() { used->inc(); } // increment progress |
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244 | const arb_progress& operator++() { inc(); return *this; } // ++progress |
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245 | |
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246 | void inc_by(int count) { arb_assert(count>0); while (count--) inc(); } |
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247 | |
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248 | void sub_progress_skipped() { used->child_terminated(); } |
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249 | |
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250 | void done() { used->done(); } // set "done" (aka 100%). Useful when exiting some loop early |
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251 | #if defined(DUMP_PROGRESS) |
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252 | void dump(); |
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253 | #endif |
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254 | void force_update() { used->force_update(); } |
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255 | }; |
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256 | |
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257 | class arb_suppress_progress { |
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258 | SmartPtr<arb_parent_progress> suppressor; |
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259 | public: |
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260 | arb_suppress_progress() |
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261 | : suppressor(arb_parent_progress::create_suppressor()) |
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262 | {} |
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263 | }; |
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264 | |
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265 | #else |
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266 | #error arb_progress.h included twice |
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267 | #endif // ARB_PROGRESS_H |
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