ui/gtk/dnd.c

Wed, 27 Nov 2024 13:28:21 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 27 Nov 2024 13:28:21 +0100
branch
newapi
changeset 394
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parent 283
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permissions
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implement table dnd (GTK)

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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 */
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105
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106 #if GTK_MAJOR_VERSION >= 4
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107
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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 }
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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);
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121 }
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122
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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 }
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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);
283
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140 }
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141
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142 char* ui_selection_gettext(UiDnD *sel) {
394
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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
283
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152 return NULL;
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153 }
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154
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155 UiFileList ui_selection_geturis(UiDnD *sel) {
394
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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 }
283
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180 return (UiFileList){NULL,0};
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181 }
394
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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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diff changeset
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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diff changeset
262 }
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263
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diff changeset
264 UiDnDAction ui_dnd_result(UiDnD *dnd) {
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diff changeset
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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diff changeset
268 case GDK_ACTION_MOVE: return UI_DND_ACTION_MOVE;
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diff changeset
269 case GDK_ACTION_LINK: return UI_DND_ACTION_LINK;
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270 default: break;
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diff changeset
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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diff changeset
282 void ui_dnd_free(UiDnD *dnd) {
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283 free(dnd);
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diff changeset
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

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