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implement gtk dnd
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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 2017 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 "dnd.h" |
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34 | #include <cx/buffer.h> |
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35 | #include <cx/array_list.h> |
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36 | |
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37 | #ifdef UI_GTK2LEGACY |
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38 | static gboolean selection_data_set_uris(GtkSelectionData *selection_data, char **uris) { |
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39 | CxBuffer *buf = cxBufferCreate(NULL, 1024, cxDefaultAllocator, CX_BUFFER_FREE_CONTENTS|CX_BUFFER_AUTO_EXTEND); |
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40 | char *uri; |
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41 | int i = 0; |
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42 | while((uri = uris[i]) != NULL) { |
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43 | cxBufferPutString(buf, uri); |
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44 | cxBufferPutString(buf, "\r\n"); |
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45 | } |
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46 | GdkAtom type = gdk_atom_intern("text/uri-list", FALSE); |
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47 | gtk_selection_data_set(selection_data, type, 8, (guchar*)buf->space, buf->pos); |
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48 | cxBufferFree(buf); |
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49 | return TRUE; |
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50 | } |
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51 | static char** selection_data_get_uris(GtkSelectionData *selection_data) { |
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52 | // TODO: implement |
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53 | return NULL; |
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54 | } |
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55 | #define gtk_selection_data_set_uris selection_data_set_uris |
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56 | #define gtk_selection_data_get_uris selection_data_get_uris |
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57 | #endif |
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58 | |
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59 | /* |
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60 | void ui_selection_settext(UiSelection *sel, char *str, int len) { |
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61 | // TODO: handle error? |
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62 | gtk_selection_data_set_text(sel->data, str, len); |
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63 | } |
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64 | |
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65 | void ui_selection_seturis(UiSelection *sel, char **uris, int nelm) { |
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66 | char **uriarray = calloc(nelm+1, sizeof(char*)); |
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67 | for(int i=0;i<nelm;i++) { |
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68 | uriarray[i] = uris[i]; |
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69 | } |
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70 | uriarray[nelm] = NULL; |
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71 | gtk_selection_data_set_uris(sel->data, uriarray); |
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72 | } |
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73 | |
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74 | char* ui_selection_gettext(UiSelection *sel) { |
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75 | guchar *text = gtk_selection_data_get_text(sel->data); |
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76 | if(text) { |
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77 | char *textcp = strdup((char*)text); |
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78 | g_free(text); |
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79 | return textcp; |
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80 | } |
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81 | return NULL; |
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82 | } |
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83 | |
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84 | char** ui_selection_geturis(UiSelection *sel, size_t *nelm) { |
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85 | gchar **uris = gtk_selection_data_get_uris(sel->data); |
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86 | if(uris) { |
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87 | size_t al = 32; |
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88 | char **array = malloc(al * sizeof(char*)); |
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89 | size_t i = 0; |
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90 | while(uris[i] != NULL) { |
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91 | if(i >= al) { |
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92 | al *= 2; |
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93 | array = realloc(array, al * sizeof(char*)); |
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94 | } |
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95 | array[i] = strdup((char*)uris[i]); |
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96 | i++; |
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97 | } |
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98 | *nelm = i; |
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99 | g_strfreev(uris); |
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100 | return array; |
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101 | } |
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102 | return NULL; |
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103 | } |
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104 | */ |
32 | 105 | |
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106 | #if GTK_MAJOR_VERSION >= 4 |
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107 | |
32 | 108 | void ui_selection_settext(UiDnD *sel, char *str, int len) { |
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109 | if(!sel->providers) { |
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110 | return; |
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111 | } |
32 | 112 | |
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113 | if(len == -1) { |
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114 | len = strlen(str); |
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115 | } |
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116 | GBytes *bytes = g_bytes_new(str, len); |
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117 | GdkContentProvider *provider = gdk_content_provider_new_for_bytes("text/plain;charset=utf-8", bytes); |
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118 | g_bytes_unref(bytes); |
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119 | |
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120 | cxListAdd(sel->providers, &provider); |
32 | 121 | } |
122 | ||
123 | void ui_selection_seturis(UiDnD *sel, char **uris, int nelm) { | |
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124 | if(!sel->providers) { |
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125 | return; |
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126 | } |
32 | 127 | |
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128 | GFile **files = calloc(nelm, sizeof(GFile*)); |
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129 | for(int i=0;i<nelm;i++) { |
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130 | GFile *file = uris[i][0] == '/' ? g_file_new_for_path(uris[i]) : g_file_new_for_uri(uris[i]); |
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131 | files[i] = file; |
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132 | } |
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133 | GdkFileList *list = gdk_file_list_new_from_array(files, nelm); |
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134 | |
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135 | GdkContentProvider *provider = gdk_content_provider_new_typed(GDK_TYPE_FILE_LIST, list); |
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136 | cxListAdd(sel->providers, &provider); |
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137 | |
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138 | g_slist_free_full ((GSList*)list, g_object_unref); |
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139 | free(files); |
32 | 140 | } |
141 | ||
142 | char* ui_selection_gettext(UiDnD *sel) { | |
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143 | if(!sel->value) { |
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144 | return NULL; |
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145 | } |
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146 | |
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147 | if(G_VALUE_HOLDS(sel->value, G_TYPE_STRING)) { |
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148 | const char *str = g_value_get_string(sel->value); |
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149 | return str ? strdup(str) : NULL; |
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150 | } |
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151 | |
32 | 152 | return NULL; |
153 | } | |
154 | ||
155 | UiFileList ui_selection_geturis(UiDnD *sel) { | |
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156 | if(!sel->value) { |
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157 | return (UiFileList){NULL,0}; |
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158 | } |
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159 | |
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160 | if(G_VALUE_HOLDS(sel->value, GDK_TYPE_FILE_LIST)) { |
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161 | GSList *list = g_value_get_boxed(sel->value); |
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162 | if(!list) { |
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163 | return (UiFileList){NULL,0}; |
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164 | } |
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165 | guint size = g_slist_length(list); |
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166 | |
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167 | UiFileList flist; |
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168 | flist.nfiles = size; |
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169 | flist.files = calloc(size, sizeof(char*)); |
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170 | int i=0; |
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171 | while(list) { |
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172 | GFile *file = list->data; |
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173 | char *uri = g_file_get_uri(file); |
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174 | flist.files[i++] = strdup(uri); |
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175 | g_free(uri); |
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176 | list = list->next; |
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177 | } |
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178 | return flist; |
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179 | } |
32 | 180 | return (UiFileList){NULL,0}; |
181 | } | |
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182 | |
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183 | |
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184 | UiDnD* ui_create_dnd(void) { |
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185 | UiDnD *dnd = malloc(sizeof(UiDnD)); |
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186 | memset(dnd, 0, sizeof(UiDnD)); |
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187 | dnd->providers = cxArrayListCreateSimple(sizeof(void*), 16); |
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188 | dnd->selected_action = 0; |
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189 | dnd->delete = FALSE; |
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190 | return dnd; |
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191 | } |
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192 | |
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193 | void ui_dnd_free(UiDnD *dnd) { |
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194 | cxListDestroy(dnd->providers); |
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195 | free(dnd); |
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196 | } |
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197 | |
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198 | UiDnDAction ui_dnd_result(UiDnD *dnd) { |
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199 | switch(dnd->selected_action) { |
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200 | case 0: return UI_DND_ACTION_NONE; |
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201 | case GDK_ACTION_COPY: return UI_DND_ACTION_COPY; |
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202 | case GDK_ACTION_MOVE: return UI_DND_ACTION_MOVE; |
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203 | case GDK_ACTION_LINK: return UI_DND_ACTION_LINK; |
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204 | default: break; |
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205 | } |
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206 | return UI_DND_ACTION_CUSTOM; |
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207 | } |
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208 | |
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209 | #else |
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210 | |
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211 | void ui_selection_settext(UiDnD *sel, char *str, int len) { |
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212 | gtk_selection_data_set_text(sel->data, str, len); |
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213 | } |
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214 | |
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215 | void ui_selection_seturis(UiDnD *sel, char **uris, int nelm) { |
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216 | char **uriarray = calloc(nelm+1, sizeof(char*)); |
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217 | for(int i=0;i<nelm;i++) { |
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218 | uriarray[i] = uris[i]; |
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219 | } |
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220 | uriarray[nelm] = NULL; |
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221 | gtk_selection_data_set_uris(sel->data, uriarray); |
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222 | free(uriarray); |
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223 | } |
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224 | |
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225 | char* ui_selection_gettext(UiDnD *sel) { |
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226 | if(!sel->data) { |
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227 | return NULL; |
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228 | } |
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229 | |
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230 | guchar *text = gtk_selection_data_get_text(sel->data); |
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231 | if(text) { |
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232 | char *textcp = strdup((char*)text); |
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233 | g_free(text); |
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234 | return textcp; |
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235 | } |
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236 | return NULL; |
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237 | } |
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238 | |
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239 | UiFileList ui_selection_geturis(UiDnD *sel) { |
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240 | if(!sel->data) { |
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241 | return (UiFileList){NULL,0}; |
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242 | } |
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243 | |
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244 | gchar **uris = gtk_selection_data_get_uris(sel->data); |
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245 | if(uris) { |
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246 | size_t al = 32; |
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247 | char **array = malloc(al * sizeof(char*)); |
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248 | size_t i = 0; |
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249 | while(uris[i] != NULL) { |
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250 | if(i >= al) { |
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251 | al *= 2; |
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252 | array = realloc(array, al * sizeof(char*)); |
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253 | } |
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254 | array[i] = strdup((char*)uris[i]); |
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255 | i++; |
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256 | } |
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257 | g_strfreev(uris); |
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258 | return (UiFileList){array,i}; |
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259 | } |
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260 | |
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261 | return (UiFileList){NULL,0}; |
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262 | } |
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263 | |
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264 | UiDnDAction ui_dnd_result(UiDnD *dnd) { |
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265 | switch(dnd->selected_action) { |
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266 | case 0: return UI_DND_ACTION_NONE; |
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267 | case GDK_ACTION_COPY: return UI_DND_ACTION_COPY; |
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268 | case GDK_ACTION_MOVE: return UI_DND_ACTION_MOVE; |
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269 | case GDK_ACTION_LINK: return UI_DND_ACTION_LINK; |
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270 | default: break; |
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271 | } |
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272 | return UI_DND_ACTION_CUSTOM; |
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273 | } |
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274 | |
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275 | |
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276 | UiDnD* ui_create_dnd(void) { |
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277 | UiDnD *dnd = malloc(sizeof(UiDnD)); |
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278 | memset(dnd, 0, sizeof(UiDnD)); |
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279 | return dnd; |
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280 | } |
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281 | |
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282 | void ui_dnd_free(UiDnD *dnd) { |
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283 | free(dnd); |
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284 | } |
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285 | |
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286 | #endif |
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287 | |
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288 | UiBool ui_dnd_need_delete(UiDnD *dnd) { |
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289 | return dnd->delete; |
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290 | } |
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291 | |
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292 | void ui_dnd_accept(UiDnD *dnd, UiBool accept) { |
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293 | dnd->accept = accept; |
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294 | } |
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295 |