ui/gtk/text.c

Fri, 11 Apr 2014 17:02:19 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 11 Apr 2014 17:02:19 +0200
changeset 30
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parent 29
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child 33
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permissions
-rw-r--r--

added locale support (Motif)

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2014 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32
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33 #include "text.h"
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34 #include "container.h"
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35
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36 static void selection_handler(
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37 GtkTextBuffer *buf,
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38 GtkTextIter *location,
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39 GtkTextMark *mark,
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40 UiTextArea *textview)
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41 {
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42 const char *mname = gtk_text_mark_get_name(mark);
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43 if(mname) {
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44 GtkTextIter begin;
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45 GtkTextIter end;
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46 int sel = gtk_text_buffer_get_selection_bounds (buf, &begin, &end);
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47 if(sel != textview->last_selection_state) {
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48 if(sel) {
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49 ui_set_group(textview->ctx, UI_GROUP_SELECTION);
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50 } else {
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51 ui_unset_group(textview->ctx, UI_GROUP_SELECTION);
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52 }
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53 }
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54 textview->last_selection_state = sel;
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55 }
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56 }
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57
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58 UIWIDGET ui_textarea(UiObject *obj, UiText *value) {
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59 GtkWidget *text_area = gtk_text_view_new();
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60 gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_area), GTK_WRAP_WORD_CHAR);
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61 g_signal_connect(
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62 text_area,
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63 "realize",
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64 G_CALLBACK(ui_textarea_realize_event),
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65 NULL);
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66 g_signal_connect(
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67 text_area,
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68 "selection-clear-event",
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69 G_CALLBACK(selection_handler),
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70 NULL);
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71
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72 UiTextArea *uitext = ucx_mempool_malloc(
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73 obj->ctx->mempool,
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74 sizeof(UiTextArea));
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75 uitext->ctx = obj->ctx;
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76 uitext->last_selection_state = 0;
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77
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78 GtkWidget *scroll_area = gtk_scrolled_window_new (NULL, NULL);
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79 gtk_scrolled_window_set_policy(
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80 GTK_SCROLLED_WINDOW(scroll_area),
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81 GTK_POLICY_AUTOMATIC,
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82 GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS
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83 gtk_container_add(GTK_CONTAINER(scroll_area), text_area);
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84
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85 // font and padding
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86 PangoFontDescription *font;
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87 font = pango_font_description_from_string("Monospace");
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88 gtk_widget_modify_font(text_area, font);
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89 pango_font_description_free(font);
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90
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91 gtk_text_view_set_left_margin(GTK_TEXT_VIEW(text_area), 2);
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92 gtk_text_view_set_right_margin(GTK_TEXT_VIEW(text_area), 2);
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93
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94 // add
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95 UiContainer *ct = uic_get_current_container(obj);
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96 ct->add(ct, scroll_area);
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97
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98 // bind value
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99 if(value) {
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100 value->get = ui_textarea_get;
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101 value->set = ui_textarea_set;
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102 value->getsubstr = ui_textarea_getsubstr;
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103 value->insert = ui_textarea_insert;
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104 value->position = ui_textarea_position;
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105 value->selection = ui_textarea_selection;
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106 value->length = ui_textarea_length;
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107 value->value = NULL;
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108 GtkTextBuffer *buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_area));
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109 value->obj = buf;
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110 if(!value->undomgr) {
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111 value->undomgr = ui_create_undomgr();
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112 }
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113
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114 // register undo manager
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115 g_signal_connect(
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116 buf,
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117 "insert-text",
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118 G_CALLBACK(ui_textbuf_insert),
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119 value);
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120 g_signal_connect(
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121 buf,
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122 "delete-range",
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123 G_CALLBACK(ui_textbuf_delete),
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124 value);
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125
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126 g_signal_connect(
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127 buf,
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128 "mark-set",
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129 G_CALLBACK(selection_handler),
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130 uitext);
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131 }
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132
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133 return scroll_area;
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134 }
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135
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136 char* ui_textarea_get(UiText *text) {
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137 if(text->value) {
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138 g_free(text->value);
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139 }
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140 GtkTextBuffer *buf = text->obj;
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141 GtkTextIter start;
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142 GtkTextIter end;
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143 gtk_text_buffer_get_bounds(buf, &start, &end);
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144 char *str = gtk_text_buffer_get_text(buf, &start, &end, FALSE);
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145 text->value = str;
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146 return str;
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147 }
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diff changeset
148
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149 void ui_textarea_set(UiText *text, char *str) {
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diff changeset
150 if(text->value) {
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diff changeset
151 g_free(text->value);
12
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152 }
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diff changeset
153 text->value = NULL;
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diff changeset
154 gtk_text_buffer_set_text((GtkTextBuffer*)text->obj, str, -1);
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155 }
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156
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diff changeset
157 char* ui_textarea_getsubstr(UiText *text, int begin, int end) {
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diff changeset
158 if(text->value) {
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diff changeset
159 g_free(text->value);
5
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160 }
12
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diff changeset
161 GtkTextBuffer *buf = text->obj;
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diff changeset
162 GtkTextIter ib;
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diff changeset
163 GtkTextIter ie;
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diff changeset
164 gtk_text_buffer_get_iter_at_offset(text->obj, &ib, begin);
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165 gtk_text_buffer_get_iter_at_offset(text->obj, &ie, end);
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166 char *str = gtk_text_buffer_get_text(buf, &ib, &ie, FALSE);
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167 text->value = str;
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diff changeset
168 return str;
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diff changeset
169 }
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170
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diff changeset
171 void ui_textarea_insert(UiText *text, int pos, char *str) {
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172 if(text->value) {
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173 g_free(text->value);
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174 }
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diff changeset
175 text->value = NULL;
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176 GtkTextIter offset;
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diff changeset
177 gtk_text_buffer_get_iter_at_offset(text->obj, &offset, pos);
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178 gtk_text_buffer_insert(text->obj, &offset, str, -1);
5
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179 }
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180
27
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diff changeset
181 int ui_textarea_position(UiText *text) {
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182 GtkTextIter begin;
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183 GtkTextIter end;
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184 gtk_text_buffer_get_selection_bounds(text->obj, &begin, &end);
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185 return gtk_text_iter_get_offset(&begin);
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186 }
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187
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188 void ui_textarea_selection(UiText *text, int *begin, int *end) {
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189 GtkTextIter b;
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diff changeset
190 GtkTextIter e;
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diff changeset
191 gtk_text_buffer_get_selection_bounds(text->obj, &b, &e);
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192 *begin = gtk_text_iter_get_offset(&b);
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193 *end = gtk_text_iter_get_offset(&e);
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diff changeset
194 }
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195
29
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diff changeset
196 int ui_textarea_length(UiText *text) {
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197 GtkTextBuffer *buf = text->obj;
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diff changeset
198 GtkTextIter start;
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199 GtkTextIter end;
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diff changeset
200 gtk_text_buffer_get_bounds(buf, &start, &end);
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diff changeset
201 return gtk_text_iter_get_offset(&end);
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diff changeset
202 }
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diff changeset
203
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204 void ui_textarea_realize_event(GtkWidget *widget, gpointer data) {
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205 gtk_widget_grab_focus(widget);
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206 }
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207
6
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diff changeset
208
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diff changeset
209 // undo manager functions
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210
5
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211 void ui_textbuf_insert(
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212 GtkTextBuffer *textbuffer,
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213 GtkTextIter *location,
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diff changeset
214 char *text,
6
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diff changeset
215 int length,
5
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diff changeset
216 void *data)
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diff changeset
217 {
6
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diff changeset
218 UiText *value = data;
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diff changeset
219 UiUndoMgr *mgr = value->undomgr;
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diff changeset
220 if(!mgr->event) {
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diff changeset
221 return;
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diff changeset
222 }
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diff changeset
223
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diff changeset
224 if(mgr->cur) {
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diff changeset
225 UcxList *elm = mgr->cur->next;
9
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parents: 8
diff changeset
226 if(elm) {
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diff changeset
227 mgr->cur->next = NULL;
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diff changeset
228 while(elm) {
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diff changeset
229 elm->prev = NULL;
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diff changeset
230 UcxList *next = elm->next;
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diff changeset
231 ui_free_textbuf_op(elm->data);
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diff changeset
232 free(elm);
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diff changeset
233 elm = next;
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diff changeset
234 }
6
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diff changeset
235 }
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parents: 5
diff changeset
236
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parents: 5
diff changeset
237 UiTextBufOp *last_op = mgr->cur->data;
9
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parents: 8
diff changeset
238 if(
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diff changeset
239 last_op->type == UI_TEXTBUF_INSERT &&
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diff changeset
240 ui_check_insertstr(last_op->text, last_op->len, text, length) == 0)
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parents: 8
diff changeset
241 {
6
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diff changeset
242 // append text to last op
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parents: 5
diff changeset
243 int ln = last_op->len;
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parents: 5
diff changeset
244 char *newtext = malloc(ln + length + 1);
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diff changeset
245 memcpy(newtext, last_op->text, ln);
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diff changeset
246 memcpy(newtext+ln, text, length);
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diff changeset
247 newtext[ln+length] = '\0';
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diff changeset
248
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diff changeset
249 last_op->text = newtext;
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diff changeset
250 last_op->len = ln + length;
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diff changeset
251 last_op->end += length;
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diff changeset
252
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diff changeset
253 return;
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diff changeset
254 }
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diff changeset
255 }
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parents: 5
diff changeset
256
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diff changeset
257 char *dpstr = malloc(length + 1);
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diff changeset
258 memcpy(dpstr, text, length);
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diff changeset
259 dpstr[length] = 0;
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diff changeset
260
05a18c56d9ca added undo for text
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parents: 5
diff changeset
261 UiTextBufOp *op = malloc(sizeof(UiTextBufOp));
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diff changeset
262 op->type = UI_TEXTBUF_INSERT;
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parents: 5
diff changeset
263 op->start = gtk_text_iter_get_offset(location);
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diff changeset
264 op->end = op->start+length;
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diff changeset
265 op->len = length;
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diff changeset
266 op->text = dpstr;
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diff changeset
267
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diff changeset
268 UcxList *elm = ucx_list_append(NULL, op);
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diff changeset
269 mgr->cur = elm;
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diff changeset
270 mgr->begin = ucx_list_concat(mgr->begin, elm);
5
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diff changeset
271 }
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parents:
diff changeset
272
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parents:
diff changeset
273 void ui_textbuf_delete(
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parents:
diff changeset
274 GtkTextBuffer *textbuffer,
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parents:
diff changeset
275 GtkTextIter *start,
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parents:
diff changeset
276 GtkTextIter *end,
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parents:
diff changeset
277 void *data)
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parents:
diff changeset
278 {
6
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diff changeset
279 UiText *value = data;
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parents: 5
diff changeset
280 UiUndoMgr *mgr = value->undomgr;
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parents: 5
diff changeset
281 if(!mgr->event) {
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diff changeset
282 return;
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parents: 5
diff changeset
283 }
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parents: 5
diff changeset
284
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parents: 5
diff changeset
285 if(mgr->cur) {
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parents: 5
diff changeset
286 UcxList *elm = mgr->cur->next;
9
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parents: 8
diff changeset
287 if(elm) {
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diff changeset
288 mgr->cur->next = NULL;
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parents: 8
diff changeset
289 while(elm) {
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diff changeset
290 elm->prev = NULL;
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parents: 8
diff changeset
291 UcxList *next = elm->next;
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diff changeset
292 ui_free_textbuf_op(elm->data);
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parents: 8
diff changeset
293 free(elm);
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parents: 8
diff changeset
294 elm = next;
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parents: 8
diff changeset
295 }
6
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parents: 5
diff changeset
296 }
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diff changeset
297 }
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diff changeset
298
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diff changeset
299 char *text = gtk_text_buffer_get_text(value->obj, start, end, FALSE);
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diff changeset
300
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diff changeset
301 UiTextBufOp *op = malloc(sizeof(UiTextBufOp));
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diff changeset
302 op->type = UI_TEXTBUF_DELETE;
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parents: 5
diff changeset
303 op->start = gtk_text_iter_get_offset(start);
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parents: 5
diff changeset
304 op->end = gtk_text_iter_get_offset(end);
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parents: 5
diff changeset
305 op->len = op->end - op->start;
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parents: 5
diff changeset
306
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diff changeset
307 char *dpstr = malloc(op->len + 1);
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diff changeset
308 memcpy(dpstr, text, op->len);
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diff changeset
309 dpstr[op->len] = 0;
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diff changeset
310 op->text = dpstr;
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diff changeset
311
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parents: 5
diff changeset
312 UcxList *elm = ucx_list_append(NULL, op);
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diff changeset
313 mgr->cur = elm;
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parents: 5
diff changeset
314 mgr->begin = ucx_list_concat(mgr->begin, elm);
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diff changeset
315 }
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parents: 5
diff changeset
316
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parents: 5
diff changeset
317 UiUndoMgr* ui_create_undomgr() {
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diff changeset
318 UiUndoMgr *mgr = malloc(sizeof(UiUndoMgr));
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diff changeset
319 mgr->begin = NULL;
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diff changeset
320 mgr->cur = NULL;
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diff changeset
321 mgr->length = 0;
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322 mgr->event = 1;
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diff changeset
323 return mgr;
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parents: 5
diff changeset
324 }
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parents: 5
diff changeset
325
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diff changeset
326 void ui_free_textbuf_op(UiTextBufOp *op) {
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diff changeset
327 if(op->text) {
9
e70e855cea89 added undo and redo for motif
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diff changeset
328 free(op->text);
6
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329 }
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330 free(op);
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331 }
6
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diff changeset
332
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diff changeset
333 int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen) {
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334 // return 1 if oldstr + newstr are one word
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335
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336 int has_space = 0;
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337 for(int i=0;i<oldlen;i++) {
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diff changeset
338 if(oldstr[i] < 33) {
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339 has_space = 1;
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340 break;
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341 }
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342 }
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343
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diff changeset
344 for(int i=0;i<newlen;i++) {
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diff changeset
345 if(has_space && newstr[i] > 32) {
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346 return 1;
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347 }
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348 }
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diff changeset
349
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350 return 0;
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diff changeset
351 }
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diff changeset
352
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diff changeset
353 void ui_text_undo(UiText *value) {
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diff changeset
354 UiUndoMgr *mgr = value->undomgr;
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diff changeset
355
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diff changeset
356 if(mgr->cur) {
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diff changeset
357 UiTextBufOp *op = mgr->cur->data;
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diff changeset
358 mgr->event = 0;
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diff changeset
359 switch(op->type) {
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diff changeset
360 case UI_TEXTBUF_INSERT: {
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diff changeset
361 GtkTextIter begin;
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diff changeset
362 GtkTextIter end;
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parents: 5
diff changeset
363 gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
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parents: 5
diff changeset
364 gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
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parents: 5
diff changeset
365 gtk_text_buffer_delete(value->obj, &begin, &end);
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diff changeset
366 break;
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parents: 5
diff changeset
367 }
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parents: 5
diff changeset
368 case UI_TEXTBUF_DELETE: {
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parents: 5
diff changeset
369 GtkTextIter begin;
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diff changeset
370 GtkTextIter end;
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parents: 5
diff changeset
371 gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
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parents: 5
diff changeset
372 gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
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parents: 5
diff changeset
373 gtk_text_buffer_insert(value->obj, &begin, op->text, op->len);
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parents: 5
diff changeset
374 break;
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parents: 5
diff changeset
375 }
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parents: 5
diff changeset
376 }
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parents: 5
diff changeset
377 mgr->event = 1;
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parents: 5
diff changeset
378 mgr->cur = mgr->cur->prev;
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parents: 5
diff changeset
379 }
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parents: 5
diff changeset
380 }
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parents: 5
diff changeset
381
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parents: 5
diff changeset
382 void ui_text_redo(UiText *value) {
8
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parents: 6
diff changeset
383 UiUndoMgr *mgr = value->undomgr;
6
05a18c56d9ca added undo for text
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parents: 5
diff changeset
384
8
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parents: 6
diff changeset
385 UcxList *elm = NULL;
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parents: 6
diff changeset
386 if(mgr->cur) {
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parents: 6
diff changeset
387 if(mgr->cur->next) {
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parents: 6
diff changeset
388 elm = mgr->cur->next;
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parents: 6
diff changeset
389 }
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parents: 6
diff changeset
390 } else if(mgr->begin) {
84a541c6e093 added redo
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parents: 6
diff changeset
391 elm = mgr->begin;
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parents: 6
diff changeset
392 }
84a541c6e093 added redo
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parents: 6
diff changeset
393
84a541c6e093 added redo
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parents: 6
diff changeset
394 if(elm) {
84a541c6e093 added redo
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parents: 6
diff changeset
395 UiTextBufOp *op = elm->data;
84a541c6e093 added redo
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parents: 6
diff changeset
396 mgr->event = 0;
84a541c6e093 added redo
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parents: 6
diff changeset
397 switch(op->type) {
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parents: 6
diff changeset
398 case UI_TEXTBUF_INSERT: {
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parents: 6
diff changeset
399 GtkTextIter begin;
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parents: 6
diff changeset
400 GtkTextIter end;
84a541c6e093 added redo
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parents: 6
diff changeset
401 gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
402 gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
403 gtk_text_buffer_insert(value->obj, &begin, op->text, op->len);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
404 break;
84a541c6e093 added redo
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parents: 6
diff changeset
405 }
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
406 case UI_TEXTBUF_DELETE: {
84a541c6e093 added redo
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parents: 6
diff changeset
407 GtkTextIter begin;
84a541c6e093 added redo
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parents: 6
diff changeset
408 GtkTextIter end;
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parents: 6
diff changeset
409 gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
410 gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
411 gtk_text_buffer_delete(value->obj, &begin, &end);
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
412 break;
84a541c6e093 added redo
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parents: 6
diff changeset
413 }
84a541c6e093 added redo
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 6
diff changeset
414 }
84a541c6e093 added redo
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parents: 6
diff changeset
415 mgr->event = 1;
84a541c6e093 added redo
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parents: 6
diff changeset
416 mgr->cur = elm;
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parents: 6
diff changeset
417 }
6
05a18c56d9ca added undo for text
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 5
diff changeset
418 }

mercurial