Thu, 01 Jan 2015 17:22:55 +0100
improved box (Motif)
5 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
4 | * Copyright 2014 Olaf Wintermann. All rights reserved. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
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31 | #include <string.h> |
5 | 32 | |
33 | #include "text.h" | |
34 | #include "container.h" | |
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35 | #include "../common/context.h" |
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36 | #include "../common/document.h" |
5 | 37 | |
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38 | static void selection_handler( |
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39 | GtkTextBuffer *buf, |
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40 | GtkTextIter *location, |
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41 | GtkTextMark *mark, |
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42 | UiTextArea *textview) |
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43 | { |
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44 | const char *mname = gtk_text_mark_get_name(mark); |
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45 | if(mname) { |
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46 | GtkTextIter begin; |
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47 | GtkTextIter end; |
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48 | int sel = gtk_text_buffer_get_selection_bounds (buf, &begin, &end); |
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49 | if(sel != textview->last_selection_state) { |
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50 | if(sel) { |
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51 | ui_set_group(textview->ctx, UI_GROUP_SELECTION); |
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52 | } else { |
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53 | ui_unset_group(textview->ctx, UI_GROUP_SELECTION); |
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54 | } |
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55 | } |
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56 | textview->last_selection_state = sel; |
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57 | } |
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58 | } |
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59 | |
5 | 60 | UIWIDGET ui_textarea(UiObject *obj, UiText *value) { |
61 | GtkWidget *text_area = gtk_text_view_new(); | |
62 | gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_area), GTK_WRAP_WORD_CHAR); | |
63 | g_signal_connect( | |
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64 | text_area, |
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65 | "realize", |
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66 | G_CALLBACK(ui_textarea_realize_event), |
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67 | NULL); |
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68 | g_signal_connect( |
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69 | text_area, |
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70 | "selection-clear-event", |
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71 | G_CALLBACK(selection_handler), |
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72 | NULL); |
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73 | |
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74 | UiTextArea *uitext = ucx_mempool_malloc( |
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75 | obj->ctx->mempool, |
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76 | sizeof(UiTextArea)); |
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77 | uitext->ctx = obj->ctx; |
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78 | uitext->last_selection_state = 0; |
5 | 79 | |
80 | GtkWidget *scroll_area = gtk_scrolled_window_new (NULL, NULL); | |
81 | gtk_scrolled_window_set_policy( | |
82 | GTK_SCROLLED_WINDOW(scroll_area), | |
83 | GTK_POLICY_AUTOMATIC, | |
84 | GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS | |
85 | gtk_container_add(GTK_CONTAINER(scroll_area), text_area); | |
86 | ||
87 | // font and padding | |
88 | PangoFontDescription *font; | |
89 | font = pango_font_description_from_string("Monospace"); | |
90 | gtk_widget_modify_font(text_area, font); | |
91 | pango_font_description_free(font); | |
92 | ||
93 | gtk_text_view_set_left_margin(GTK_TEXT_VIEW(text_area), 2); | |
94 | gtk_text_view_set_right_margin(GTK_TEXT_VIEW(text_area), 2); | |
95 | ||
96 | // add | |
97 | UiContainer *ct = uic_get_current_container(obj); | |
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98 | ct->add(ct, scroll_area, TRUE); |
5 | 99 | |
100 | // bind value | |
101 | if(value) { | |
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102 | GtkTextBuffer *buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_area)); |
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103 | |
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104 | if(value->value) { |
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105 | gtk_text_buffer_set_text(buf, value->value, -1); |
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106 | // TODO: free value |
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107 | } |
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108 | |
5 | 109 | value->get = ui_textarea_get; |
110 | value->set = ui_textarea_set; | |
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111 | value->getsubstr = ui_textarea_getsubstr; |
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112 | value->insert = ui_textarea_insert; |
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113 | value->position = ui_textarea_position; |
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114 | value->selection = ui_textarea_selection; |
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115 | value->length = ui_textarea_length; |
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116 | value->remove = ui_textarea_remove; |
5 | 117 | value->value = NULL; |
118 | value->obj = buf; | |
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119 | if(!value->undomgr) { |
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120 | value->undomgr = ui_create_undomgr(); |
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121 | } |
5 | 122 | |
123 | // register undo manager | |
124 | g_signal_connect( | |
125 | buf, | |
126 | "insert-text", | |
127 | G_CALLBACK(ui_textbuf_insert), | |
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128 | value); |
5 | 129 | g_signal_connect( |
130 | buf, | |
131 | "delete-range", | |
132 | G_CALLBACK(ui_textbuf_delete), | |
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133 | value); |
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134 | |
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135 | g_signal_connect( |
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136 | buf, |
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137 | "mark-set", |
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138 | G_CALLBACK(selection_handler), |
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139 | uitext); |
5 | 140 | } |
141 | ||
142 | return scroll_area; | |
143 | } | |
144 | ||
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145 | UIWIDGET ui_textarea_nv(UiObject *obj, char *varname) { |
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146 | UiVar *var = uic_connect_var(obj->ctx, varname, UI_VAR_TEXT); |
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147 | if(var) { |
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148 | UiText *value = var->value; |
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149 | return ui_textarea(obj, value); |
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150 | } else { |
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151 | // TODO: error |
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152 | } |
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153 | return NULL; |
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154 | } |
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155 | |
5 | 156 | char* ui_textarea_get(UiText *text) { |
157 | if(text->value) { | |
158 | g_free(text->value); | |
159 | } | |
160 | GtkTextBuffer *buf = text->obj; | |
161 | GtkTextIter start; | |
162 | GtkTextIter end; | |
163 | gtk_text_buffer_get_bounds(buf, &start, &end); | |
164 | char *str = gtk_text_buffer_get_text(buf, &start, &end, FALSE); | |
165 | text->value = str; | |
166 | return str; | |
167 | } | |
168 | ||
169 | void ui_textarea_set(UiText *text, char *str) { | |
170 | if(text->value) { | |
171 | g_free(text->value); | |
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172 | } |
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173 | text->value = NULL; |
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174 | gtk_text_buffer_set_text((GtkTextBuffer*)text->obj, str, -1); |
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175 | } |
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176 | |
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177 | char* ui_textarea_getsubstr(UiText *text, int begin, int end) { |
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178 | if(text->value) { |
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179 | g_free(text->value); |
5 | 180 | } |
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181 | GtkTextBuffer *buf = text->obj; |
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182 | GtkTextIter ib; |
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183 | GtkTextIter ie; |
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184 | gtk_text_buffer_get_iter_at_offset(text->obj, &ib, begin); |
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185 | gtk_text_buffer_get_iter_at_offset(text->obj, &ie, end); |
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186 | char *str = gtk_text_buffer_get_text(buf, &ib, &ie, FALSE); |
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187 | text->value = str; |
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188 | return str; |
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189 | } |
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190 | |
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191 | void ui_textarea_insert(UiText *text, int pos, char *str) { |
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192 | if(text->value) { |
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193 | g_free(text->value); |
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194 | } |
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195 | text->value = NULL; |
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196 | GtkTextIter offset; |
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197 | gtk_text_buffer_get_iter_at_offset(text->obj, &offset, pos); |
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198 | gtk_text_buffer_insert(text->obj, &offset, str, -1); |
5 | 199 | } |
200 | ||
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201 | int ui_textarea_position(UiText *text) { |
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202 | GtkTextIter begin; |
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203 | GtkTextIter end; |
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204 | gtk_text_buffer_get_selection_bounds(text->obj, &begin, &end); |
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205 | return gtk_text_iter_get_offset(&begin); |
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206 | } |
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207 | |
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208 | void ui_textarea_selection(UiText *text, int *begin, int *end) { |
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209 | GtkTextIter b; |
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210 | GtkTextIter e; |
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211 | gtk_text_buffer_get_selection_bounds(text->obj, &b, &e); |
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212 | *begin = gtk_text_iter_get_offset(&b); |
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213 | *end = gtk_text_iter_get_offset(&e); |
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214 | } |
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215 | |
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216 | int ui_textarea_length(UiText *text) { |
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217 | GtkTextBuffer *buf = text->obj; |
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218 | GtkTextIter start; |
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219 | GtkTextIter end; |
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220 | gtk_text_buffer_get_bounds(buf, &start, &end); |
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221 | return gtk_text_iter_get_offset(&end); |
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222 | } |
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223 | |
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224 | void ui_textarea_remove(UiText *text, int begin, int end) { |
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225 | GtkTextBuffer *buf = text->obj; |
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226 | GtkTextIter ib; |
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227 | GtkTextIter ie; |
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228 | gtk_text_buffer_get_iter_at_offset(buf, &ib, begin); |
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229 | gtk_text_buffer_get_iter_at_offset(buf, &ie, end); |
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230 | gtk_text_buffer_delete(buf, &ib, &ie); |
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231 | } |
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232 | |
5 | 233 | void ui_textarea_realize_event(GtkWidget *widget, gpointer data) { |
234 | gtk_widget_grab_focus(widget); | |
235 | } | |
236 | ||
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237 | |
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238 | // undo manager functions |
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239 | |
5 | 240 | void ui_textbuf_insert( |
241 | GtkTextBuffer *textbuffer, | |
242 | GtkTextIter *location, | |
243 | char *text, | |
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244 | int length, |
5 | 245 | void *data) |
246 | { | |
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247 | UiText *value = data; |
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248 | UiUndoMgr *mgr = value->undomgr; |
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249 | if(!mgr->event) { |
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250 | return; |
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251 | } |
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252 | |
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253 | if(mgr->cur) { |
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254 | UcxList *elm = mgr->cur->next; |
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255 | if(elm) { |
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256 | mgr->cur->next = NULL; |
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257 | while(elm) { |
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258 | elm->prev = NULL; |
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259 | UcxList *next = elm->next; |
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260 | ui_free_textbuf_op(elm->data); |
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261 | free(elm); |
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262 | elm = next; |
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263 | } |
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264 | } |
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265 | |
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266 | UiTextBufOp *last_op = mgr->cur->data; |
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267 | if( |
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268 | last_op->type == UI_TEXTBUF_INSERT && |
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269 | ui_check_insertstr(last_op->text, last_op->len, text, length) == 0) |
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270 | { |
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271 | // append text to last op |
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272 | int ln = last_op->len; |
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273 | char *newtext = malloc(ln + length + 1); |
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274 | memcpy(newtext, last_op->text, ln); |
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275 | memcpy(newtext+ln, text, length); |
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276 | newtext[ln+length] = '\0'; |
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277 | |
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278 | last_op->text = newtext; |
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279 | last_op->len = ln + length; |
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280 | last_op->end += length; |
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281 | |
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282 | return; |
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283 | } |
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284 | } |
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285 | |
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286 | char *dpstr = malloc(length + 1); |
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287 | memcpy(dpstr, text, length); |
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288 | dpstr[length] = 0; |
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289 | |
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290 | UiTextBufOp *op = malloc(sizeof(UiTextBufOp)); |
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291 | op->type = UI_TEXTBUF_INSERT; |
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292 | op->start = gtk_text_iter_get_offset(location); |
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293 | op->end = op->start+length; |
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294 | op->len = length; |
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295 | op->text = dpstr; |
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296 | |
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297 | UcxList *elm = ucx_list_append(NULL, op); |
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298 | mgr->cur = elm; |
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299 | mgr->begin = ucx_list_concat(mgr->begin, elm); |
5 | 300 | } |
301 | ||
302 | void ui_textbuf_delete( | |
303 | GtkTextBuffer *textbuffer, | |
304 | GtkTextIter *start, | |
305 | GtkTextIter *end, | |
306 | void *data) | |
307 | { | |
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308 | UiText *value = data; |
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309 | UiUndoMgr *mgr = value->undomgr; |
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310 | if(!mgr->event) { |
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311 | return; |
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312 | } |
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313 | |
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314 | if(mgr->cur) { |
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315 | UcxList *elm = mgr->cur->next; |
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316 | if(elm) { |
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317 | mgr->cur->next = NULL; |
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318 | while(elm) { |
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319 | elm->prev = NULL; |
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320 | UcxList *next = elm->next; |
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321 | ui_free_textbuf_op(elm->data); |
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322 | free(elm); |
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323 | elm = next; |
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324 | } |
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325 | } |
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326 | } |
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327 | |
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328 | char *text = gtk_text_buffer_get_text(value->obj, start, end, FALSE); |
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329 | |
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330 | UiTextBufOp *op = malloc(sizeof(UiTextBufOp)); |
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331 | op->type = UI_TEXTBUF_DELETE; |
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332 | op->start = gtk_text_iter_get_offset(start); |
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333 | op->end = gtk_text_iter_get_offset(end); |
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334 | op->len = op->end - op->start; |
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335 | |
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336 | char *dpstr = malloc(op->len + 1); |
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337 | memcpy(dpstr, text, op->len); |
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338 | dpstr[op->len] = 0; |
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339 | op->text = dpstr; |
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340 | |
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341 | UcxList *elm = ucx_list_append(NULL, op); |
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342 | mgr->cur = elm; |
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343 | mgr->begin = ucx_list_concat(mgr->begin, elm); |
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344 | } |
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345 | |
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346 | UiUndoMgr* ui_create_undomgr() { |
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347 | UiUndoMgr *mgr = malloc(sizeof(UiUndoMgr)); |
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348 | mgr->begin = NULL; |
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349 | mgr->cur = NULL; |
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350 | mgr->length = 0; |
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351 | mgr->event = 1; |
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352 | return mgr; |
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353 | } |
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354 | |
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355 | void ui_free_textbuf_op(UiTextBufOp *op) { |
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356 | if(op->text) { |
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357 | free(op->text); |
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358 | } |
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359 | free(op); |
5 | 360 | } |
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361 | |
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362 | int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen) { |
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363 | // return 1 if oldstr + newstr are one word |
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364 | |
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365 | int has_space = 0; |
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366 | for(int i=0;i<oldlen;i++) { |
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367 | if(oldstr[i] < 33) { |
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368 | has_space = 1; |
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369 | break; |
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370 | } |
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371 | } |
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372 | |
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373 | for(int i=0;i<newlen;i++) { |
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374 | if(has_space && newstr[i] > 32) { |
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375 | return 1; |
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376 | } |
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377 | } |
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378 | |
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379 | return 0; |
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380 | } |
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381 | |
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382 | void ui_text_undo(UiText *value) { |
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383 | UiUndoMgr *mgr = value->undomgr; |
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384 | |
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385 | if(mgr->cur) { |
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386 | UiTextBufOp *op = mgr->cur->data; |
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387 | mgr->event = 0; |
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388 | switch(op->type) { |
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389 | case UI_TEXTBUF_INSERT: { |
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390 | GtkTextIter begin; |
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391 | GtkTextIter end; |
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392 | gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start); |
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393 | gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end); |
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394 | gtk_text_buffer_delete(value->obj, &begin, &end); |
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395 | break; |
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396 | } |
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397 | case UI_TEXTBUF_DELETE: { |
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398 | GtkTextIter begin; |
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399 | GtkTextIter end; |
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400 | gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start); |
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401 | gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end); |
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402 | gtk_text_buffer_insert(value->obj, &begin, op->text, op->len); |
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403 | break; |
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404 | } |
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405 | } |
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406 | mgr->event = 1; |
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407 | mgr->cur = mgr->cur->prev; |
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408 | } |
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409 | } |
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410 | |
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411 | void ui_text_redo(UiText *value) { |
8 | 412 | UiUndoMgr *mgr = value->undomgr; |
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413 | |
8 | 414 | UcxList *elm = NULL; |
415 | if(mgr->cur) { | |
416 | if(mgr->cur->next) { | |
417 | elm = mgr->cur->next; | |
418 | } | |
419 | } else if(mgr->begin) { | |
420 | elm = mgr->begin; | |
421 | } | |
422 | ||
423 | if(elm) { | |
424 | UiTextBufOp *op = elm->data; | |
425 | mgr->event = 0; | |
426 | switch(op->type) { | |
427 | case UI_TEXTBUF_INSERT: { | |
428 | GtkTextIter begin; | |
429 | GtkTextIter end; | |
430 | gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start); | |
431 | gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end); | |
432 | gtk_text_buffer_insert(value->obj, &begin, op->text, op->len); | |
433 | break; | |
434 | } | |
435 | case UI_TEXTBUF_DELETE: { | |
436 | GtkTextIter begin; | |
437 | GtkTextIter end; | |
438 | gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start); | |
439 | gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end); | |
440 | gtk_text_buffer_delete(value->obj, &begin, &end); | |
441 | break; | |
442 | } | |
443 | } | |
444 | mgr->event = 1; | |
445 | mgr->cur = elm; | |
446 | } | |
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447 | } |