tint2conf : custom tree view
git-svn-id: http://tint2.googlecode.com/svn/trunk@274 121b4492-b84c-0410-8b4c-0d4edfb3f3cc
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thilor77
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272
src/tint2conf/theme_view.c
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272
src/tint2conf/theme_view.c
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#include "theme_view.h"
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GtkListStore *g_store;
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// Some boring function declarations: GObject type system stuff
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static void custom_cell_renderer_theme_init(CustomCellRendererTheme *cellprogress);
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static void custom_cell_renderer_theme_class_init(CustomCellRendererThemeClass *klass);
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static void custom_cell_renderer_theme_finalize(GObject *gobject);
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static void custom_cell_renderer_theme_get_property(GObject *object, guint param_id, GValue *value, GParamSpec *pspec);
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static void custom_cell_renderer_theme_set_property(GObject *object, guint param_id, const GValue *value, GParamSpec *pspec);
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// These functions are the heart of our custom cell renderer:
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static void custom_cell_renderer_theme_get_size(GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *cell_area, gint *x_offset, gint *y_offset, gint *width, gint *height);
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static void custom_cell_renderer_theme_render(GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget, GdkRectangle *background_area, GdkRectangle *cell_area, GdkRectangle *expose_area, guint flags);
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static gpointer parent_class;
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enum { PROP_TITLE = 1, };
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GtkWidget *create_view_and_model(void)
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{
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GtkTreeViewColumn *col;
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GtkCellRenderer *renderer;
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GtkWidget *view;
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GtkTreeSelection *sel;
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GtkTreeIter iter;
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g_store = gtk_list_store_new(N_COLUMNS, G_TYPE_STRING);
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view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(g_store));
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gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE);
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g_object_unref(g_store); // destroy store automatically with view
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/*
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renderer = gtk_cell_renderer_text_new();
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col = gtk_tree_view_column_new_with_attributes("Deb", renderer, "title", COL_TEXT, NULL);
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gtk_tree_view_append_column(GTK_TREE_VIEW(view), col);
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*/
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renderer = g_object_new(CUSTOM_TYPE_CELL_RENDERER_THEME, NULL);
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col = gtk_tree_view_column_new();
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gtk_tree_view_column_pack_start (col, renderer, TRUE);
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gtk_tree_view_column_add_attribute (col, renderer, "title", COL_TEXT);
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gtk_tree_view_append_column(GTK_TREE_VIEW(view),col);
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sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
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gtk_tree_selection_set_mode(GTK_TREE_SELECTION(sel), GTK_SELECTION_SINGLE);
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g_signal_connect(sel, "changed", G_CALLBACK(on_changed), NULL);
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return view;
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}
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void on_changed(GtkWidget *widget, gpointer label)
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{
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GtkTreeIter iter;
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GtkTreeModel *model;
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char *value;
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if (gtk_tree_selection_get_selected(GTK_TREE_SELECTION(widget), &model, &iter)) {
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gtk_tree_model_get(model, &iter, COL_TEXT, &value, -1);
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//gtk_label_set_text(GTK_LABEL(label), value);
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g_free(value);
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}
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}
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void add_to_list(GtkWidget *list, const gchar *str)
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{
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GtkTreeIter iter;
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gtk_list_store_append(g_store, &iter);
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gtk_list_store_set(g_store, &iter, COL_TEXT, str, -1);
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//gtk_list_store_set (g_store, &iter, COL_TEXT, buf, -1);
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}
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/***************************************************************************
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* custom_cell_renderer_theme_get_type: here we register our type with
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* the GObject type system if we
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* haven't done so yet. Everything
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* else is done in the callbacks.
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***************************************************************************/
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GType custom_cell_renderer_theme_get_type (void)
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{
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static GType cell_type = 0;
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if (cell_type == 0) {
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static const GTypeInfo cell_info =
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{
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sizeof (CustomCellRendererThemeClass),
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NULL, // base_init
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NULL, // base_finalize
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(GClassInitFunc) custom_cell_renderer_theme_class_init,
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NULL, // class_finalize
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NULL, // class_data
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sizeof (CustomCellRendererTheme),
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0, // n_preallocs
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(GInstanceInitFunc) custom_cell_renderer_theme_init,
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};
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// Derive from GtkCellRenderer
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cell_type = g_type_register_static(GTK_TYPE_CELL_RENDERER, "CustomCellRendererTheme", &cell_info, 0);
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}
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return cell_type;
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}
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static void custom_cell_renderer_theme_init(CustomCellRendererTheme *celltheme)
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{
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// set some default properties
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GTK_CELL_RENDERER(celltheme)->mode = GTK_CELL_RENDERER_MODE_INERT;
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GTK_CELL_RENDERER(celltheme)->xpad = 2;
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GTK_CELL_RENDERER(celltheme)->ypad = 2;
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celltheme->title = 0;
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printf("custom_cell_renderer_theme_init\n\n");
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}
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/***************************************************************************
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* custom_cell_renderer_theme_class_init:
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*
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* set up our own get_property and set_property functions, and
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* override the parent's functions that we need to implement.
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* And make our new "percentage" property known to the type system.
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* If you want cells that can be activated on their own (ie. not
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* just the whole row selected) or cells that are editable, you
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* will need to override 'activate' and 'start_editing' as well.
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***************************************************************************/
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static void custom_cell_renderer_theme_class_init(CustomCellRendererThemeClass *klass)
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{
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GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS(klass);
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GObjectClass *object_class = G_OBJECT_CLASS(klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = custom_cell_renderer_theme_finalize;
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object_class->get_property = custom_cell_renderer_theme_get_property;
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object_class->set_property = custom_cell_renderer_theme_set_property;
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// Override the two crucial functions that are the heart of a cell renderer in the parent class
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cell_class->get_size = custom_cell_renderer_theme_get_size;
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cell_class->render = custom_cell_renderer_theme_render;
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printf("custom_class_init\n\n");
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// Install our very own properties
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g_object_class_install_property (object_class, PROP_TITLE, g_param_spec_string("title", "Title", "Theme's title", 0, G_PARAM_READWRITE));
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// g_object_class_install_property (object_class, PROP_PERCENTAGE, g_param_spec_double ("percentage", "Percentage", "The fractional progress to display", 0, 1, 0, G_PARAM_READWRITE));
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}
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static void custom_cell_renderer_theme_finalize(GObject *object)
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{
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CustomCellRendererTheme *celltheme = CUSTOM_CELL_RENDERER_THEME(object);
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// free any resources here
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//if (celltheme->title)
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//g_free(celltheme->title);
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// Free any dynamically allocated resources here
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(* G_OBJECT_CLASS (parent_class)->finalize) (object);
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}
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static void custom_cell_renderer_theme_get_property(GObject *object, guint param_id, GValue *value, GParamSpec *psec)
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{
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CustomCellRendererTheme *celltheme = CUSTOM_CELL_RENDERER_THEME(object);
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switch (param_id) {
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case PROP_TITLE:
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g_value_set_string(value, celltheme->title);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, psec);
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break;
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}
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}
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static void custom_cell_renderer_theme_set_property(GObject *object, guint param_id, const GValue *value, GParamSpec *pspec)
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{
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CustomCellRendererTheme *cellprogress = CUSTOM_CELL_RENDERER_THEME(object);
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switch (param_id) {
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case PROP_TITLE:
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//printf("set_property**************************************\n");
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cellprogress->title = g_value_get_string(value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);
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break;
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}
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}
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#define FIXED_WIDTH 100
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#define FIXED_HEIGHT 20
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static void custom_cell_renderer_theme_get_size(GtkCellRenderer *cell, GtkWidget *widget, GdkRectangle *cell_area, gint *x_offset, gint *y_offset, gint *width, gint *height)
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{
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gint calc_width;
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gint calc_height;
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// calculate the size of our cell, taking into account
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// padding and alignment properties of parent.
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calc_width = (gint) cell->xpad * 2 + FIXED_WIDTH;
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calc_height = (gint) cell->ypad * 2 + FIXED_HEIGHT;
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if (width)
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*width = calc_width;
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if (height)
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*height = calc_height;
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if (cell_area) {
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if (x_offset) {
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*x_offset = cell->xalign * (cell_area->width - calc_width);
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*x_offset = MAX (*x_offset, 0);
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}
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if (y_offset) {
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*y_offset = cell->yalign * (cell_area->height - calc_height);
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*y_offset = MAX (*y_offset, 0);
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}
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}
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}
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static void custom_cell_renderer_theme_render(GtkCellRenderer *cell, GdkWindow *window, GtkWidget *widget, GdkRectangle *background_area, GdkRectangle *cell_area, GdkRectangle *expose_area, guint flags)
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{
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CustomCellRendererTheme *celltheme = CUSTOM_CELL_RENDERER_THEME(cell);
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GtkStateType state;
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gint width, height, x_offset, y_offset;
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PangoLayout *layout;
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// do the rendering.
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custom_cell_renderer_theme_get_size(cell, widget, cell_area, &x_offset, &y_offset, &width, &height);
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if (GTK_WIDGET_HAS_FOCUS (widget))
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state = GTK_STATE_ACTIVE;
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else
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state = GTK_STATE_NORMAL;
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width -= cell->xpad*2;
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height -= cell->ypad*2;
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layout = gtk_widget_create_pango_layout(widget, "");
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pango_layout_set_text(layout, celltheme->title, strlen(celltheme->title));
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gtk_paint_layout (widget->style, widget->window, state, FALSE, NULL, widget, NULL, x_offset, y_offset, layout);
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//pango_layout_get_size (layout, &width, &height);
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g_object_unref (layout);
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//gtk_paint_layout
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//gtk_paint_box (widget->style, window, GTK_STATE_NORMAL, GTK_SHADOW_IN, NULL, widget, "title", cell_area->x + x_offset + cell->xpad, cell_area->y + y_offset + cell->ypad, width - 1, height - 1);
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printf("custom_cell_renderer_theme_render\n");
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//gtk_paint_box (widget->style, window, state, GTK_SHADOW_OUT, NULL, widget, "bar", cell_area->x + x_offset + cell->xpad, cell_area->y + y_offset + cell->ypad, width * cellprogress->progress, height - 1);
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}
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48
src/tint2conf/theme_view.h
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src/tint2conf/theme_view.h
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#ifndef THEME_VIEW
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#define THEME_VIEW
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#include <gtk/gtk.h>
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// Some boilerplate GObject type check and type cast macros.
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// 'klass' is used here instead of 'class', because 'class' is a c++ keyword
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#define CUSTOM_TYPE_CELL_RENDERER_THEME (custom_cell_renderer_theme_get_type())
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#define CUSTOM_CELL_RENDERER_THEME(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), CUSTOM_TYPE_CELL_RENDERER_THEME, CustomCellRendererTheme))
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#define CUSTOM_CELL_RENDERER_THEME_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CUSTOM_TYPE_CELL_RENDERER_THEME, CustomCellRendererThemeClass))
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#define CUSTOM_IS_CELL_PROGRESS_THEME(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CUSTOM_TYPE_CELL_RENDERER_THEME))
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#define CUSTOM_IS_CELL_PROGRESS_THEME_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CUSTOM_TYPE_CELL_RENDERER_THEME))
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#define CUSTOM_CELL_RENDERER_THEME_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CUSTOM_TYPE_CELL_RENDERER_THEME, CustomCellRendererThemeClass))
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extern GtkListStore *g_store;
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enum { COL_TEXT = 0, N_COLUMNS };
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typedef struct _CustomCellRendererTheme CustomCellRendererTheme;
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typedef struct _CustomCellRendererThemeClass CustomCellRendererThemeClass;
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struct _CustomCellRendererTheme
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{
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GtkCellRenderer parent;
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gchar *title;
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gdouble progress;
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};
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struct _CustomCellRendererThemeClass
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{
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GtkCellRendererClass parent_class;
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};
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GtkWidget *create_view_and_model(void);
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GType custom_cell_renderer_theme_get_type(void);
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void on_changed(GtkWidget *widget, gpointer label);
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void add_to_list(GtkWidget *list, const gchar *str);
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#endif
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