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annotate src/textfile_gui.cpp @ 20477:e845688ff873 draft

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(svn r25437) -Codechange: rework the FreeTypeSettings structure to make it better grouped
author rubidium <rubidium@openttd.org>
date Sun, 23 Jun 2013 15:23:22 +0000
parents 63dba929ba42
children
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1 /* $Id$ */
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2
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3 /*
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4 * This file is part of OpenTTD.
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5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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8 */
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9
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10 /** @file textfile_gui.cpp Implementation of textfile window. */
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11
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12 #include "stdafx.h"
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13 #include "fileio_func.h"
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14 #include "fontcache.h"
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15 #include "gfx_type.h"
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16 #include "gfx_func.h"
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17 #include "string_func.h"
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18 #include "textfile_gui.h"
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19
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20 #include "widgets/misc_widget.h"
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21
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22 #include "table/strings.h"
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23
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24
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25 /** Widgets for the textfile window. */
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26 static const NWidgetPart _nested_textfile_widgets[] = {
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27 NWidget(NWID_HORIZONTAL),
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28 NWidget(WWT_CLOSEBOX, COLOUR_MAUVE),
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29 NWidget(WWT_CAPTION, COLOUR_MAUVE, WID_TF_CAPTION), SetDataTip(STR_NULL, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
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30 NWidget(WWT_DEFSIZEBOX, COLOUR_MAUVE),
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31 EndContainer(),
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32 NWidget(NWID_HORIZONTAL),
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33 NWidget(WWT_PANEL, COLOUR_MAUVE, WID_TF_BACKGROUND), SetMinimalSize(200, 125), SetResize(1, 12), SetScrollbar(WID_TF_VSCROLLBAR),
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34 EndContainer(),
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35 NWidget(NWID_VERTICAL),
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36 NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_TF_VSCROLLBAR),
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37 EndContainer(),
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38 EndContainer(),
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39 NWidget(NWID_HORIZONTAL),
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40 NWidget(NWID_HSCROLLBAR, COLOUR_MAUVE, WID_TF_HSCROLLBAR),
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41 NWidget(WWT_RESIZEBOX, COLOUR_MAUVE),
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42 EndContainer(),
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43 };
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44
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45 /** Window definition for the textfile window */
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46 static WindowDesc _textfile_desc(
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47 WDP_CENTER, "textfile", 630, 460,
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48 WC_TEXTFILE, WC_NONE,
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49 0,
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50 _nested_textfile_widgets, lengthof(_nested_textfile_widgets)
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51 );
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52
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53 TextfileWindow::TextfileWindow(TextfileType file_type) : Window(&_textfile_desc), file_type(file_type)
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54 {
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55 this->CreateNestedTree();
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56 this->vscroll = this->GetScrollbar(WID_TF_VSCROLLBAR);
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57 this->hscroll = this->GetScrollbar(WID_TF_HSCROLLBAR);
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58 this->FinishInitNested();
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59 this->GetWidget<NWidgetCore>(WID_TF_CAPTION)->SetDataTip(STR_TEXTFILE_README_CAPTION + file_type, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS);
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60 }
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61
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62 /* virtual */ TextfileWindow::~TextfileWindow()
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63 {
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64 free(this->text);
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65 }
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66
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67 /* virtual */ void TextfileWindow::UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
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68 {
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69 switch (widget) {
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70 case WID_TF_BACKGROUND:
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71 this->line_height = FONT_HEIGHT_MONO + 2;
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72 resize->height = this->line_height;
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73
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74 size->height = 4 * resize->height + TOP_SPACING + BOTTOM_SPACING; // At least 4 lines are visible.
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75 size->width = max(200u, size->width); // At least 200 pixels wide.
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76 break;
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77 }
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78 }
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79
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80 /* virtual */ void TextfileWindow::DrawWidget(const Rect &r, int widget) const
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81 {
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82 if (widget != WID_TF_BACKGROUND) return;
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83
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84 int width = r.right - r.left + 1 - WD_BEVEL_LEFT - WD_BEVEL_RIGHT;
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85 int height = r.bottom - r.top + 1 - WD_BEVEL_LEFT - WD_BEVEL_RIGHT;
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86
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87 DrawPixelInfo new_dpi;
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88 if (!FillDrawPixelInfo(&new_dpi, r.left + WD_BEVEL_LEFT, r.top, width, height)) return;
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89 DrawPixelInfo *old_dpi = _cur_dpi;
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90 _cur_dpi = &new_dpi;
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91
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92 int left, right;
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93 if (_current_text_dir == TD_RTL) {
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94 left = width + WD_BEVEL_RIGHT - WD_FRAMETEXT_RIGHT - this->hscroll->GetCount();
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95 right = width + WD_BEVEL_RIGHT - WD_FRAMETEXT_RIGHT - 1 + this->hscroll->GetPosition();
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96 } else {
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97 left = WD_FRAMETEXT_LEFT - WD_BEVEL_LEFT - this->hscroll->GetPosition();
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98 right = WD_FRAMETEXT_LEFT - WD_BEVEL_LEFT + this->hscroll->GetCount() - 1;
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99 }
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100 int top = TOP_SPACING;
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101 for (uint i = 0; i < this->vscroll->GetCapacity() && i + this->vscroll->GetPosition() < this->lines.Length(); i++) {
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102 DrawString(left, right, top + i * this->line_height, this->lines[i + this->vscroll->GetPosition()], TC_WHITE, SA_LEFT, false, FS_MONO);
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103 }
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104
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105 _cur_dpi = old_dpi;
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106 }
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107
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108 /* virtual */ void TextfileWindow::OnResize()
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109 {
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110 this->vscroll->SetCapacityFromWidget(this, WID_TF_BACKGROUND, TOP_SPACING + BOTTOM_SPACING);
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111 this->hscroll->SetCapacityFromWidget(this, WID_TF_BACKGROUND);
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112 }
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113
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114 /* virtual */ void TextfileWindow::Reset()
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115 {
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116 this->search_iterator = 0;
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117 }
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118
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119 /* virtual */ FontSize TextfileWindow::DefaultSize()
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120 {
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121 return FS_MONO;
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122 }
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123
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124 /* virtual */ const char *TextfileWindow::NextString()
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125 {
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126 if (this->search_iterator >= this->lines.Length()) return NULL;
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127
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128 return this->lines[this->search_iterator++];
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129 }
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130
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131 /* virtual */ bool TextfileWindow::Monospace()
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132 {
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133 return true;
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134 }
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135
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136 /* virtual */ void TextfileWindow::SetFontNames(FreeTypeSettings *settings, const char *font_name)
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137 {
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138 #ifdef WITH_FREETYPE
20477
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139 strecpy(settings->mono.font, font_name, lastof(settings->mono.font));
19078
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140 #endif /* WITH_FREETYPE */
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141 }
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142
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143 /**
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144 * Loads the textfile text from file, and setup #lines, #max_length, and both scrollbars.
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145 */
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146 /* virtual */ void TextfileWindow::LoadTextfile(const char *textfile, Subdirectory dir)
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147 {
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148 if (textfile == NULL) return;
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149
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150 this->lines.Clear();
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151
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152 /* Get text from file */
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153 size_t filesize;
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154 FILE *handle = FioFOpenFile(textfile, "rb", dir, &filesize);
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155 if (handle == NULL) return;
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156
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157 this->text = ReallocT(this->text, filesize + 1);
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158 size_t read = fread(this->text, 1, filesize, handle);
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159 fclose(handle);
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160
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161 if (read != filesize) return;
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162
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163 this->text[filesize] = '\0';
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164
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165 /* Replace tabs and line feeds with a space since str_validate removes those. */
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166 for (char *p = this->text; *p != '\0'; p++) {
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167 if (*p == '\t' || *p == '\r') *p = ' ';
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168 }
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169
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170 /* Check for the byte-order-mark, and skip it if needed. */
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171 char *p = this->text + (strncmp("\xEF\xBB\xBF", this->text, 3) == 0 ? 3 : 0);
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172
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173 /* Make sure the string is a valid UTF-8 sequence. */
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174 str_validate(p, this->text + filesize, SVS_REPLACE_WITH_QUESTION_MARK | SVS_ALLOW_NEWLINE);
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175
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176 /* Split the string on newlines. */
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177 *this->lines.Append() = p;
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178 for (; *p != '\0'; p++) {
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179 if (*p == '\n') {
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180 *p = '\0';
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181 *this->lines.Append() = p + 1;
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182 }
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183 }
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184
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185 CheckForMissingGlyphs(true, this);
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186
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187 /* Initialize scrollbars */
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188 this->vscroll->SetCount(this->lines.Length());
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189
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190 this->max_length = 0;
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191 for (uint i = 0; i < this->lines.Length(); i++) {
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192 this->max_length = max(this->max_length, GetStringBoundingBox(this->lines[i], FS_MONO).width);
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193 }
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194 this->hscroll->SetCount(this->max_length + WD_FRAMETEXT_LEFT + WD_FRAMETEXT_RIGHT);
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195 this->hscroll->SetStepSize(10); // Speed up horizontal scrollbar
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196 }
19081
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197
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198 /**
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199 * Search a textfile file next to the given content.
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200 * @param type The type of the textfile to search for.
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201 * @param dir The subdirectory to search in.
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202 * @param filename The filename of the content to look for.
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203 * @return The path to the textfile, \c NULL otherwise.
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204 */
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205 const char *GetTextfile(TextfileType type, Subdirectory dir, const char *filename)
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206 {
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207 static const char * const prefixes[] = {
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208 "readme",
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209 "changelog",
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210 "license",
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211 };
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212 assert_compile(lengthof(prefixes) == TFT_END);
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213
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214 const char *prefix = prefixes[type];
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215
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216 if (filename == NULL) return NULL;
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217
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218 static char file_path[MAX_PATH];
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219 strecpy(file_path, filename, lastof(file_path));
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220
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221 char *slash = strrchr(file_path, PATHSEPCHAR);
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222 if (slash == NULL) return NULL;
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diff changeset
223
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224 seprintf(slash + 1, lastof(file_path), "%s_%s.txt", prefix, GetCurrentLanguageIsoCode());
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225 if (FioCheckFileExists(file_path, dir)) return file_path;
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diff changeset
226
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227 seprintf(slash + 1, lastof(file_path), "%s_%.2s.txt", prefix, GetCurrentLanguageIsoCode());
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228 if (FioCheckFileExists(file_path, dir)) return file_path;
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diff changeset
229
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230 seprintf(slash + 1, lastof(file_path), "%s.txt", prefix);
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231 return FioCheckFileExists(file_path, dir) ? file_path : NULL;
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232 }