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/* * ===================================================================================== * * Filename: main.c * * Description: * * Version: 1.0 * Created: 2010年01月23日 15时14分41秒 * Revision: none * Compiler: gcc * * Author: David Fang (A IT worker), qi_fd@163.com * Company: No * * ===================================================================================== */ #include <gtk/gtk.h> #include <dirent.h> #include <string.h> #include <stdio.h> #include <stdlib.h> #include <sys/stat.h> //窗口退出信号的处理函数 void destroy_main_wnd(GtkWidget* widget, gpointer data); //根据路径编辑框中的目录路径显示该目录下的文件 int init_file_list(GtkList* file_list, GtkEntry* directory_entry); //当文件列表中的选择项发生改变时的处理函数 void select_file_changed(GtkList* file_list, gpointer data); //双击文件列表中的项目时的处理函数 gint file_list_click_handle(GtkWidget* widget, GdkEventButton* event, gpointer data); //返回按钮点击时的处理函数 void back_btn_clicked(GtkButton* back_btn, gpointer data); GtkWidget* file_list; //文件列表 GtkWidget* text; //文本显示区 GtkWidget* directory_entry; //路径编辑器 //和List中的item关联数据时需要key //第一个key和item的label关联 //第二个key和item的类型关联(属于目录还是普通文件) const gchar *list_item_data_key_string="list_item_data_label_string"; const gchar *list_item_data_key_type="list_item_data_type"; int main(int argc, char* argv[]) { GtkWidget* window; //主窗口 GtkWidget* list_scroll_wnd; //用来放文件列表的滚动窗 GtkWidget* text_view_scroll_wnd; //用来放文本显示的滚动窗 GtkWidget* vbox; GtkWidget* hbox; GtkWidget* valign; GtkWidget* halign; GtkWidget* directory_label; GtkWidget* btn_back; gtk_init(&argc, &argv); window = (GtkWidget*)gtk_window_new(GTK_WINDOW_TOPLEVEL); list_scroll_wnd = (GtkWidget*)gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy((GtkScrolledWindow*)(list_scroll_wnd), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); text_view_scroll_wnd = (GtkWidget*)gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy((GtkScrolledWindow*)(text_view_scroll_wnd), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); vbox = gtk_vbox_new(FALSE, 5); hbox = gtk_hbox_new(FALSE, 5); valign = gtk_alignment_new(0, 0, 1, 0); halign = gtk_alignment_new(1, 0, 0, 0); text = gtk_text_view_new(); gtk_text_view_set_editable((GtkTextView*)text, FALSE); file_list = gtk_list_new(); gtk_list_set_selection_mode((GtkList*)file_list, GTK_SELECTION_BROWSE); directory_label = gtk_label_new("路径"); directory_entry = gtk_entry_new(); gtk_entry_set_editable((GtkEntry*)(directory_entry), FALSE); gtk_entry_set_text((GtkEntry*)(directory_entry), "/"); btn_back = gtk_button_new_with_label("<<"); if(0 != init_file_list((GtkList*)(file_list), (GtkEntry*)(directory_entry))) { g_print("init file list failed!\n"); return 1; } gtk_window_set_position((GtkWindow*)window, GTK_WIN_POS_CENTER); gtk_window_set_default_size((GtkWindow*)window, 800, 600); gtk_container_set_border_width(GTK_CONTAINER(window), 10); gtk_widget_set_size_request(directory_label, 40, 30); gtk_widget_set_size_request(btn_back, 40, 30); gtk_container_add(GTK_CONTAINER(halign), directory_label); gtk_box_pack_start(GTK_BOX(hbox), halign, FALSE, FALSE, 0); gtk_box_pack_start(GTK_BOX(hbox), directory_entry, TRUE, TRUE, 0); gtk_box_pack_start(GTK_BOX(hbox), btn_back, FALSE, FALSE, 0); gtk_container_add(GTK_CONTAINER(valign), hbox); gtk_box_pack_start(GTK_BOX(vbox), valign, FALSE, FALSE, 0); gtk_scrolled_window_add_with_viewport((GtkScrolledWindow*)list_scroll_wnd, file_list); gtk_box_pack_start(GTK_BOX(vbox), list_scroll_wnd, TRUE, TRUE, 0); gtk_scrolled_window_add_with_viewport((GtkScrolledWindow*)text_view_scroll_wnd, text); gtk_box_pack_start(GTK_BOX(vbox), text_view_scroll_wnd, TRUE, TRUE, 0); gtk_container_add(GTK_CONTAINER(window), vbox); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy_main_wnd), NULL); g_signal_connect(G_OBJECT(file_list), "selection-changed", G_CALLBACK(select_file_changed), (gpointer)(text)); g_signal_connect(G_OBJECT(file_list), "button_press_event", G_CALLBACK(file_list_click_handle), (gpointer)(directory_entry)); g_signal_connect(G_OBJECT(btn_back), "clicked", G_CALLBACK(back_btn_clicked), (gpointer)(directory_entry)); gtk_widget_show_all(window); gtk_main(); return 0; } void destroy_main_wnd(GtkWidget* widget, gpointer data) { gtk_main_quit(); } GtkWidget* list_item_directory_new(const char* dirname) { GtkWidget* list_item = gtk_list_item_new(); GtkWidget* hbox = gtk_hbox_new(FALSE, 5); GtkWidget* image = gtk_image_new_from_stock(GTK_STOCK_DIRECTORY, GTK_ICON_SIZE_SMALL_TOOLBAR); GtkWidget* label = gtk_label_new(dirname); gtk_box_pack_start(GTK_BOX(hbox), image, FALSE, FALSE, 0); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_container_add(GTK_CONTAINER(list_item), hbox); gtk_object_set_data(GTK_OBJECT(list_item), list_item_data_key_string, (gpointer)dirname); gtk_object_set_data(GTK_OBJECT(list_item), list_item_data_key_type, (gpointer)0); return list_item; } GtkWidget* list_item_file_new(const char* filename) { GtkWidget* list_item = gtk_list_item_new(); GtkWidget* hbox = gtk_hbox_new(FALSE, 5); GtkWidget* image = gtk_image_new_from_stock(GTK_STOCK_FILE, GTK_ICON_SIZE_SMALL_TOOLBAR); GtkWidget* label = gtk_label_new(filename); gtk_box_pack_start(GTK_BOX(hbox), image, FALSE, FALSE, 0); gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0); gtk_container_add(GTK_CONTAINER(list_item), hbox); gtk_object_set_data(GTK_OBJECT(list_item), list_item_data_key_string, (gpointer)filename); gtk_object_set_data(GTK_OBJECT(list_item), list_item_data_key_type, (gpointer)1); return list_item; } int init_file_list(GtkList* file_list, GtkEntry* directory_entry) { const char* dirpath = (const char*)gtk_entry_get_text(directory_entry); DIR* dir = opendir(dirpath); struct dirent* enump = NULL; GList* dlist = NULL; GList* flist = NULL; GtkWidget* list_item = NULL; size_t name_len; if(NULL == dir) { g_print("Open directory failed:%s.\n", dirpath); return 1; } while(enump = readdir(dir)) { name_len = strlen(enump->d_name); if( (name_len == 1 && enump->d_name[0] == '.') || (name_len == 2 && !strncmp(enump->d_name, "..", 2))) continue; if(DT_DIR == enump->d_type) { list_item = list_item_directory_new(enump->d_name); dlist = g_list_prepend(dlist, list_item); } if(DT_REG == enump->d_type) { list_item = list_item_file_new(enump->d_name); flist = g_list_prepend(flist, list_item); } } gtk_list_clear_items(file_list, 0, -1); gtk_list_append_items(file_list, dlist); gtk_list_append_items(file_list, flist); gtk_widget_show_all((GtkWidget*)(file_list)); return 0; } void select_file_changed(GtkList* file_list, gpointer data) { GtkTextView* text = (GtkTextView*)data; GList* dlist = GTK_LIST(file_list)->selection; GtkObject* selected_item = NULL; gchar* item_data_string; const gchar* cur_dir; gchar* path = NULL; struct stat stat_buf; if(!dlist) { return; } selected_item = GTK_OBJECT(dlist->data); item_data_string = (gchar*)gtk_object_get_data(selected_item, list_item_data_key_string); gint type = (gint)gtk_object_get_data(selected_item, list_item_data_key_type); cur_dir = gtk_entry_get_text((GtkEntry*)directory_entry); path = (gchar*)malloc(strlen(cur_dir) + strlen(item_data_string) + 1); if(NULL == path) goto end_proc; strcpy(path, cur_dir); strcat(path, item_data_string); if(stat(path, &stat_buf) < 0) goto end_proc; if(0 == type) { //directory } else if(1==type) { //regular file } end_proc: free(path); } //0 open failed //1 open succeeded int test_open(const char* path) { struct dirent* enump = NULL; DIR* dir = opendir(path); if(NULL == dir) { return 0; } enump = readdir(dir); return NULL != enump; } void text_view_file_content(GtkWidget* text_view, const gchar* file_path) { struct stat stat_buf; FILE* fp; size_t buf_size = 1024 * 4; GtkTextBuffer* text_buf = NULL; char* buf, *utf8_end; int i; if(stat(file_path, &stat_buf) < 0) return; if(NULL == (fp = fopen(file_path, "rb"))) return; if(stat_buf.st_size < buf_size) { buf_size = stat_buf.st_size; } buf = (char*)malloc(buf_size); if(NULL == buf) return; if(fread(buf, 1, buf_size, fp) < buf_size) goto end_text_view_file_content; text_buf = gtk_text_view_get_buffer((GtkTextView*)text); if(NULL == text_buf) { text_buf = gtk_text_buffer_new(NULL); gtk_text_view_set_buffer((GtkTextView*)text, text_buf); } if(g_utf8_validate((const gchar*)buf, buf_size, (const gchar**)&utf8_end)) { gtk_text_buffer_set_text(text_buf, (const gchar*)buf, buf_size); } else { for(i = 0; i < buf_size; ++i) { if(!isprint(buf[i])) { buf[i] = '.'; } } gtk_text_buffer_set_text(text_buf, (const gchar*)buf, buf_size); } end_text_view_file_content: free(buf); } gint file_list_click_handle(GtkWidget* widget, GdkEventButton* event, gpointer data) { if(GTK_IS_LIST(widget) && event->type == GDK_2BUTTON_PRESS) { GList* dlist = GTK_LIST(widget)->selection; GtkEntry* path_entry = (GtkEntry*)data; if(NULL != dlist) { GtkObject* selected_item = GTK_OBJECT(dlist->data); const char* old_path = gtk_entry_get_text(path_entry); const char* selected_item_string = (gchar*)gtk_object_get_data(selected_item, list_item_data_key_string); gint type = (gint)gtk_object_get_data(selected_item, list_item_data_key_type); if(0 == type) { //directory gchar* new_path = (gchar*)malloc(strlen(old_path) + strlen(selected_item_string) + 2); strcpy(new_path, old_path); strcat(new_path, selected_item_string); strcat(new_path, "/"); if(test_open(new_path)) { gtk_entry_set_text(path_entry, new_path); init_file_list((GtkList*)widget, path_entry); } free(new_path); } else if(1 == type) { //regular file gchar* file_path = (gchar*)malloc(strlen(old_path) + strlen(selected_item_string) + 1); strcpy(file_path, old_path); strcat(file_path, selected_item_string); text_view_file_content(text, file_path); } } } } //calc the position of the second last slash // calculated start pos // | // /usr/bin/ gint calc_start_pos(const char* path) { size_t path_len = strlen(path); const char* p = path; gint count = 0; const char* p_second_last_slash = path + path_len - 2; while(*p_second_last_slash != '/') { p_second_last_slash--; } for(; p != p_second_last_slash; ++p) { count++; } //skip the slash count+=1; return count; } void back_btn_clicked(GtkButton* back_btn, gpointer data) { GtkEntry* path_entry = (GtkEntry*)data; gint start_pos; const char* old_path = gtk_entry_get_text(path_entry); if(!strcmp(old_path, "/")) return; start_pos = calc_start_pos(old_path); gtk_editable_delete_text((GtkEditable*)path_entry, start_pos, -1); init_file_list((GtkList*)(file_list), (GtkEntry*)(path_entry)); } |
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来自： jackleong1993 > 《linux c编程》
