第一个Limo程序：主题选择器----themeselector.ipk

 

其实主题选择器是第三个完成的程序，只不过前两个不怎么成功，所以直接忽略

 

这个主题选择器算是比较成功了，连老外都在用http://www.freelimo.tk/viewtopic.php?f=2&t=54（哈，自卖自夸了）

 

毕竟手机离不开主题嘛

 

不吹了，这里就借这个程序简单讲一下limo gtk的实现及主题切换的原理

 

其实在前面那个范例中就可以看出来了，首先要初始化一个mianwindow，再加入一个form:

#define BLACK_THEME#include <gtk/gtk.h>static GtkWidget *main_window;int main(int argc, char *argv[]){ GtkWidget *form; GtkWidget *vbox; gtk_init(&argc, &argv); main_window = gtk_main_window_new(GTK_WIN_STYLE_DEFAULT); form = gtk_form_new(TRUE); gtk_form_set_title(GTK_FORM(form), "主题选择器"); gtk_main_window_add_form(GTK_MAIN_WINDOW(main_window), GTK_FORM(form)); gtk_main_window_set_current_form(GTK_MAIN_WINDOW(main_window),GTK_FORM(form)); g_signal_connect (G_OBJECT (main_window), "destroy", G_CALLBACK (kill_app), main_window); gtk_widget_show_all(main_window); gtk_main(); return 0;} 

 

然后给这个form添加一个自定义的widget:

int main(int argc, char *argv[]){ ........ GtkWidget* view = get_icon_view(); gtk_container_add(GTK_CONTAINER(form), view); .......}

 

这个view是通过get_icon_view()初始化：

static GdkPixbuf *file_pixbuf, *folder_pixbuf;GtkWidget *icon_list;......GtkWidget*get_icon_view(){ GtkWidget *scrolled_window; GtkListStore *store; GtkCellRenderer *cell, *rendertext; icon_list = gtk_icon_view_new (); gtk_icon_view_set_grid_type (GTK_ICON_VIEW (icon_list), GRID_TBYT); gtk_icon_view_set_row_spacing (GTK_ICON_VIEW (icon_list), 40); gtk_icon_view_set_column_spacing (GTK_ICON_VIEW (icon_list), 30); gtk_icon_view_set_margin (GTK_ICON_VIEW (icon_list), 10); //left margin gtk_icon_view_set_reorderable (GTK_ICON_VIEW (icon_list), TRUE); file_pixbuf = gdk_pixbuf_new_from_file("/mnt/ums/.apps/cn.iEnzo.themes/bin/file.png", NULL); folder_pixbuf = gdk_pixbuf_new_from_file("/mnt/ums/.apps/cn.iEnzo.themes/bin/folder.png", NULL); parent = g_strdup ("/mnt/"); store = create_store(); fill_store (store); gtk_icon_view_set_model (GTK_ICON_VIEW (icon_list), GTK_TREE_MODEL(store)); gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (icon_list), GTK_SELECTION_MULTIPLE); g_object_unref (store);// Pixbuf new(Cell BG) cell = gtk_cell_renderer_pixbuf_new (); gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_list), cell, FALSE); g_object_set (cell, "follow-state", TRUE, NULL); gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_list),cell, "pixbuf", COL_PIXBUF, NULL);// Text new rendertext = gtk_cell_renderer_text_new(); gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(icon_list), rendertext, FALSE); gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(icon_list), rendertext, "text", COL_DISPLAY_NAME, NULL); g_object_set(rendertext, "size-points", 13.0, NULL); g_object_set (rendertext, "ellipsize", PANGO_ELLIPSIZE_END, NULL); gtk_icon_view_select_at_pos( GTK_ICON_VIEW(icon_list),0 ,2); g_print("item act store %p/n", store); g_signal_connect (icon_list, "clicked",G_CALLBACK (item_activated), store); scrolled_window = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC); gtk_container_add (GTK_CONTAINER (scrolled_window), icon_list); return scrolled_window;}

可以看出这个view其实是一个包好一个icon_list的滚动窗口scrolled_window

 

icon_list是一个gtk_icon_view，而模型model是store，通过create_store()初始化，并通过fill_store (store)添加数据：

enum{ COL_PATH, COL_DISPLAY_NAME, COL_PIXBUF, COL_IS_DIRECTORY, NUM_COLS};static gintsort_func (GtkTreeModel *model, GtkTreeIter *a, GtkTreeIter *b, gpointer user_data){ gboolean is_dir_a, is_dir_b; gchar *name_a, *name_b; int ret; /* We need this function because we want to sort * folders before files. */ gtk_tree_model_get (model, a, COL_IS_DIRECTORY, &is_dir_a, COL_DISPLAY_NAME, &name_a, -1); gtk_tree_model_get (model, b, COL_IS_DIRECTORY, &is_dir_b, COL_DISPLAY_NAME, &name_b, -1); if (!is_dir_a && is_dir_b) ret = 1; else if (is_dir_a && !is_dir_b) ret = -1; else { ret = g_utf8_collate (name_a, name_b); } g_free (name_a); g_free (name_b); return ret;}voidfill_store (GtkListStore *store){ GDir *dir; const gchar *name; GtkTreeIter iter; /* First clear the store */ gtk_list_store_clear (store); /* Now go through the directory and extract all the file * information */ dir = g_dir_open (parent, 0, NULL); name = g_dir_read_name (dir); while (name != NULL) { gchar *path, *display_name; gboolean is_dir; /* We ignore hidden files that start with a '.' */ if (name[0] != '.') { path = g_build_filename (parent, name, NULL); is_dir = g_file_test (path, G_FILE_TEST_IS_DIR); display_name = g_filename_to_utf8 (name, -1, NULL, NULL, NULL); gtk_list_store_append (store, &iter); gtk_list_store_set (store, &iter, COL_PATH, path, COL_DISPLAY_NAME, display_name, COL_IS_DIRECTORY, is_dir, COL_PIXBUF, is_dir ? folder_pixbuf : file_pixbuf, -1); g_free (path); g_free (display_name); } name = g_dir_read_name (dir); } g_dir_close(dir); g_printf("fill end/n");}static GtkListStore *create_store (void){ GtkListStore *store; store = gtk_list_store_new (NUM_COLS, G_TYPE_STRING, G_TYPE_STRING, GDK_TYPE_PIXBUF, G_TYPE_BOOLEAN); /* Set sort column and function */ gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store), sort_func, NULL, NULL); gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, GTK_SORT_ASCENDING); return store;}

 

其中staticgint sort_func (GtkTreeModel *model,GtkTreeIter  *a,GtkTreeIter *b,gpointer user_data)指定了list排列的方式

 

通过以上语句，就在这个form里面添加了一个带滚动条、以图标显示、按首字母排列的文件列表

 

接下来再回头看看get_icon_view()中的一句

g_signal_connect(icon_list, "clicked",G_CALLBACK (item_activated), store);

这里给icon_list注册了一个clicked事件，回调函数是item_activated，既指定了点击文件图标时候要进行的动作：

gchar *parent;char mount[4096];.......static voiditem_activated (GtkIconView *icon_view, GtkTreePath *tree_path, gpointer user_data){ GtkListStore *store; gchar *path; gchar *display_name; GtkTreeIter iter; gboolean is_dir; store = GTK_LIST_STORE (user_data); _store = store; g_printf("/n [%s]--[%d]/n",__FUNCTION__, __LINE__); gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, tree_path); gtk_tree_model_get (GTK_TREE_MODEL (store), &iter, COL_PATH, &path, COL_DISPLAY_NAME, &display_name, COL_IS_DIRECTORY, &is_dir, -1); fprintf(stderr, "select [%s][%s]/n",path, display_name);//当选择的不是目录时 if (!is_dir) { //判断文件后缀是否为DMF，//如果是就把文件名和路径合并到一个mount命令中char *dmf=".dmf";if(!(strstr(selected,dmf)==NULL)){memset(mount,0, sizeof(mount));char *mount2=" /usr/z_rsr/apps/com.samsung.launcher/res/bitmap/activity_view.dmf && kill `ps -e |grep [^scim-]launcher$|awk '{print $1}' `";sprintf(mount, "mount --bind %s %s",path,mount2); } g_free (path); return; } /* Replace parent with path and re-fill the model*/ g_free (parent); parent = path; fill_store (store); g_printf("/n [%s]--[%d]/n",__FUNCTION__, __LINE__); gtk_widget_queue_resize(GTK_WIDGET(icon_view)); gtk_icon_view_select_at_pos( GTK_ICON_VIEW(icon_view),0 ,1);}

 

看到这里各位童鞋知道改变主题的秘密了吧，就是封装了一个mount命令，哈哈

 

主题文件选好了，怎么提交变更，说白了就是怎么运行这个mount命令呢？

先别急，在form里面添加几个button先：

int main(int argc, char *argv[]){ ....... gtk_container_add(GTK_CONTAINER(form), view); gtk_form_add_softkey(GTK_FORM(form), (gchar *)"返回", NULL, (SoftkeyActionType)SOFTKEY_CALLBACK, iconview_softkey_cb_back, form); gtk_form_add_softkey(GTK_FORM(form), (gchar *)"选中", NULL, (SoftkeyActionType)SOFTKEY_CALLBACK, select_theme, main_window); gtk_form_add_softkey(GTK_FORM(form), (gchar *)"退出", NULL, (SoftkeyActionType)SOFTKEY_CALLBACK, kill_app, main_window); .......}

 

“返回”按钮：进入了错误的目录怎么返回上一层呢，来看这个button的回调iconview_softkey_cb_back：

voidchange_form(GtkWidget *window, GtkWidget *form){ GtkWidget *child; if(!gtk_main_window_set_current_form(GTK_MAIN_WINDOW(window), GTK_FORM(form))) g_printf("/ngtk_main_window_set_current_form error!!!!!!![change_form]/n"); gtk_widget_show_all(GTK_WIDGET(form)); child = GTK_BIN(form)->child; if(GTK_IS_SCROLLED_WINDOW(child)) child = GTK_BIN(child)->child; if (GTK_WIDGET_CAN_FOCUS(child)) gtk_window_set_focus(GTK_WINDOW(window), child);}static gbooleaniconview_softkey_cb_back(GtkWidget *widget, SoftkeyPosition position, gpointer data){ g_printf("Back key pressed!%s/n", __FILE__); if(strcmp(parent,"/")==0) { GtkWidget * form; { form = GTK_WIDGET(gtk_main_window_get_current_form(GTK_MAIN_WINDOW(main_window))); gtk_main_window_remove_form((GTK_MAIN_WINDOW(main_window)), GTK_FORM(form)); if( folder_pixbuf ) g_object_unref(folder_pixbuf); if( file_pixbuf ) g_object_unref(file_pixbuf); change_form(GTK_WIDGET(main_window), GTK_WIDGET(data)); } } else { GtkListStore *store; gchar *dir_name; store = _store; g_printf("globaltoolbar Parent:%s/n", parent); dir_name = g_path_get_dirname (parent); g_free (parent); parent = dir_name; fill_store(store); gtk_widget_queue_resize(GTK_WIDGET(icon_list)); } return TRUE;}

 

“选中”按钮，来看这个button的回调iconview_softkey_cb_back，以及回调之后的弹出提示框：

为了在程序中使用命令行调用系统命令，还要#include<stdlib.h>

#include<stdlib.h>.......void theme_noti(int flag){ GtkWidget *popup; popup = gtk_style_dialog_new(GTK_STYLE_DIALOG_SYSTEM_NOTIFICATION, NULL, GTK_DIALOG_NO_SEPARATOR); if(flag) { gtk_style_dialog_set_title(GTK_STYLE_DIALOG(popup), "操作成功"); gtk_style_dialog_set_content_area_text(GTK_STYLE_DIALOG(popup), "成功更换您的主题！"); } else { gtk_style_dialog_set_title(GTK_STYLE_DIALOG(popup), "操作失败"); gtk_style_dialog_set_content_area_text(GTK_STYLE_DIALOG(popup), "更换失败，请重试！"); } gtk_dialog_run(GTK_DIALOG(popup));}void select_theme (GtkWidget *widget, GtkWidget *button, gpointer data){ int ret=0; char *unmount="umount /usr/z_rsr/apps/com.samsung.launcher/res/bitmap/activity_view.dmf"; fprintf(stderr, "%s/n",unmount); fprintf(stderr, "here2: %s/n",mount); if(*mount) { ret=system(unmount); ret=system(mount); } if(ret>0) { theme_noti(0); } else { theme_noti(1); }}

 

最后就是“退出”按钮的回调kill_app：

void kill_app(GtkWidget *widget, GtkWidget *button, gpointer data){ printf("kill app........../n"); gtk_main_quit();}

 

 

好了，主题选择器完成了，赶快编译试试吧。：）

 

第一次写这种文章，写的不好，感觉有点罗嗦却好像又没说清楚，哈哈！