Thu, 21 Nov 2024 18:45:47 +0100
implement list/table contextmenu (GTK)
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2017 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdarg.h> #include "../common/context.h" #include "../common/object.h" #include "container.h" #include "list.h" #include "icon.h" #include "menu.h" void* ui_strmodel_getvalue(void *elm, int column) { return column == 0 ? elm : NULL; } static GtkListStore* create_list_store(UiList *list, UiModel *model) { int columns = model->columns; GType types[2*columns]; int c = 0; for(int i=0;i<columns;i++,c++) { switch(model->types[i]) { case UI_STRING: case UI_STRING_FREE: types[c] = G_TYPE_STRING; break; case UI_INTEGER: types[c] = G_TYPE_INT; break; case UI_ICON: types[c] = G_TYPE_OBJECT; break; case UI_ICON_TEXT: case UI_ICON_TEXT_FREE: { types[c] = G_TYPE_OBJECT; types[++c] = G_TYPE_STRING; } } } GtkListStore *store = gtk_list_store_newv(c, types); if(list) { void *elm = list->first(list); while(elm) { // insert new row GtkTreeIter iter; gtk_list_store_insert (store, &iter, -1); // set column values int c = 0; for(int i=0;i<columns;i++,c++) { void *data = model->getvalue(elm, c); GValue value = G_VALUE_INIT; switch(model->types[i]) { case UI_STRING: case UI_STRING_FREE: { g_value_init(&value, G_TYPE_STRING); g_value_set_string(&value, data); if(model->types[i] == UI_STRING_FREE) { free(data); } break; } case UI_INTEGER: { g_value_init(&value, G_TYPE_INT); int *intptr = data; g_value_set_int(&value, *intptr); break; } case UI_ICON: { g_value_init(&value, G_TYPE_OBJECT); UiIcon *icon = data; #if GTK_MAJOR_VERSION >= 4 g_value_set_object(&value, icon->info); // TODO: does this work? #else if(!icon->pixbuf && icon->info) { GError *error = NULL; GdkPixbuf *pixbuf = gtk_icon_info_load_icon(icon->info, &error); icon->pixbuf = pixbuf; } if(icon->pixbuf) { g_value_set_object(&value, icon->pixbuf); } #endif break; } case UI_ICON_TEXT: case UI_ICON_TEXT_FREE: { UiIcon *icon = data; #if GTK_MAJOR_VERSION >= 4 if(icon) { GValue iconvalue = G_VALUE_INIT; g_value_init(&iconvalue, G_TYPE_OBJECT); g_value_set_object(&iconvalue, ui_icon_pixbuf(icon)); gtk_list_store_set_value(store, &iter, c, &iconvalue); } #else GValue pixbufvalue = G_VALUE_INIT; if(icon) { if(!icon->pixbuf && icon->info) { GError *error = NULL; GdkPixbuf *pixbuf = gtk_icon_info_load_icon(icon->info, &error); icon->pixbuf = pixbuf; } g_value_init(&pixbufvalue, G_TYPE_OBJECT); g_value_set_object(&pixbufvalue, icon->pixbuf); gtk_list_store_set_value(store, &iter, c, &pixbufvalue); } #endif c++; char *str = model->getvalue(elm, c); g_value_init(&value, G_TYPE_STRING); g_value_set_string(&value, str); if(model->types[i] == UI_ICON_TEXT_FREE) { free(str); } break; } } gtk_list_store_set_value(store, &iter, c, &value); } // next row elm = list->next(list); } } return store; } UIWIDGET ui_listview_create(UiObject *obj, UiListArgs args) { UiObject* current = uic_current_obj(obj); // create treeview GtkWidget *view = gtk_tree_view_new(); ui_set_name_and_style(view, args.name, args.style_class); ui_set_widget_groups(obj->ctx, view, args.groups); GtkCellRenderer *renderer = gtk_cell_renderer_text_new(); GtkTreeViewColumn *column = gtk_tree_view_column_new_with_attributes(NULL, renderer, "text", 0, NULL); gtk_tree_view_append_column(GTK_TREE_VIEW(view), column); gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE); #ifdef UI_GTK3 #if GTK_MINOR_VERSION >= 8 //gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE); #else // TODO: implement for older gtk3 #endif #else // TODO: implement for gtk2 #endif UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1); model->getvalue = args.getvalue ? args.getvalue : ui_strmodel_getvalue; UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST); UiList *list = var ? var->value : NULL; GtkListStore *listmodel = create_list_store(list, model); gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel)); g_object_unref(listmodel); UiListView *listview = malloc(sizeof(UiListView)); listview->obj = obj; listview->widget = view; listview->var = var; listview->model = model; g_signal_connect( view, "destroy", G_CALLBACK(ui_listview_destroy), listview); // bind var list->update = ui_listview_update; list->getselection = ui_listview_getselection; list->setselection = ui_listview_setselection; list->obj = listview; // add callback UiTreeEventData *event = malloc(sizeof(UiTreeEventData)); event->obj = obj; event->activate = args.onactivate; event->activatedata = args.onactivatedata; event->selection = args.onselection; event->selectiondata = args.onselectiondata; g_signal_connect( view, "destroy", G_CALLBACK(ui_destroy_userdata), event); if(args.onactivate) { g_signal_connect( view, "row-activated", G_CALLBACK(ui_listview_activate_event), event); } if(args.onselection) { GtkTreeSelection *selection = gtk_tree_view_get_selection( GTK_TREE_VIEW(view)); g_signal_connect( selection, "changed", G_CALLBACK(ui_listview_selection_event), event); } if(args.contextmenu) { UIMENU menu = ui_contextmenu_create(args.contextmenu, obj, view); ui_widget_set_contextmenu(view, menu); } // add widget to the current container GtkWidget *scroll_area = SCROLLEDWINDOW_NEW(); gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(scroll_area), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS SCROLLEDWINDOW_SET_CHILD(scroll_area, view); UI_APPLY_LAYOUT1(current, args); current->container->add(current->container, scroll_area, FALSE); // ct->current should point to view, not scroll_area, to make it possible // to add a context menu current->container->current = view; return scroll_area; } /* static void drag_begin(GtkWidget *widget, GdkDragContext *context, gpointer udata) { printf("drag begin\n"); } static void drag_end( GtkWidget *widget, GdkDragContext *context, guint time, gpointer udata) { printf("drag end\n"); } */ /* static GtkTargetEntry targetentries[] = { { "STRING", 0, 0 }, { "text/plain", 0, 1 }, { "text/uri-list", 0, 2 }, }; */ UIWIDGET ui_table_create(UiObject *obj, UiListArgs args) { UiObject* current = uic_current_obj(obj); // create treeview GtkWidget *view = gtk_tree_view_new(); UiModel *model = args.model; int columns = model ? model->columns : 0; int addi = 0; for(int i=0;i<columns;i++) { GtkTreeViewColumn *column = NULL; if(model->types[i] == UI_ICON_TEXT) { column = gtk_tree_view_column_new(); gtk_tree_view_column_set_title(column, model->titles[i]); GtkCellRenderer *iconrenderer = gtk_cell_renderer_pixbuf_new(); GtkCellRenderer *textrenderer = gtk_cell_renderer_text_new(); gtk_tree_view_column_pack_end(column, textrenderer, TRUE); gtk_tree_view_column_pack_start(column, iconrenderer, FALSE); gtk_tree_view_column_add_attribute(column, iconrenderer, "pixbuf", i); gtk_tree_view_column_add_attribute(column, textrenderer, "text", i+1); addi++; } else if (model->types[i] == UI_ICON) { GtkCellRenderer *iconrenderer = gtk_cell_renderer_pixbuf_new(); column = gtk_tree_view_column_new_with_attributes( model->titles[i], iconrenderer, "pixbuf", i + addi, NULL); } else { GtkCellRenderer *renderer = gtk_cell_renderer_text_new(); column = gtk_tree_view_column_new_with_attributes( model->titles[i], renderer, "text", i + addi, NULL); } int colsz = model->columnsize[i]; if(colsz > 0) { gtk_tree_view_column_set_fixed_width(column, colsz); } else if(colsz < 0) { gtk_tree_view_column_set_expand(column, TRUE); } gtk_tree_view_column_set_resizable(column, TRUE); gtk_tree_view_append_column(GTK_TREE_VIEW(view), column); } //gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE); #ifdef UI_GTK3 //gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE); #else #endif UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST); UiList *list = var ? var->value : NULL; GtkListStore *listmodel = create_list_store(list, model); gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel)); g_object_unref(listmodel); //g_signal_connect(view, "drag-begin", G_CALLBACK(drag_begin), NULL); //g_signal_connect(view, "drag-end", G_CALLBACK(drag_end), NULL); // add TreeView as observer to the UiList to update the TreeView if the // data changes UiListView *tableview = malloc(sizeof(UiListView)); tableview->obj = obj; tableview->widget = view; tableview->var = var; tableview->model = model; g_signal_connect( view, "destroy", G_CALLBACK(ui_listview_destroy), tableview); // bind var list->update = ui_listview_update; list->getselection = ui_listview_getselection; list->obj = tableview; // add callback UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiTreeEventData)); event->obj = obj; event->activate = args.onactivate; event->selection = args.onselection; event->activatedata = args.onactivatedata; event->selectiondata = args.onselectiondata; if(args.onactivate) { g_signal_connect( view, "row-activated", G_CALLBACK(ui_listview_activate_event), event); } if(args.onselection) { GtkTreeSelection *selection = gtk_tree_view_get_selection( GTK_TREE_VIEW(view)); g_signal_connect( selection, "changed", G_CALLBACK(ui_listview_selection_event), event); } // TODO: destroy callback if(args.contextmenu) { UIMENU menu = ui_contextmenu_create(args.contextmenu, obj, view); ui_widget_set_contextmenu(view, menu); } GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(view)); if(args.multiselection) { gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE); } // add widget to the current container GtkWidget *scroll_area = SCROLLEDWINDOW_NEW(); gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(scroll_area), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS SCROLLEDWINDOW_SET_CHILD(scroll_area, view); UI_APPLY_LAYOUT1(current, args); current->container->add(current->container, scroll_area, FALSE); // ct->current should point to view, not scroll_area, to make it possible // to add a context menu current->container->current = view; return scroll_area; } GtkWidget* ui_get_tree_widget(UIWIDGET widget) { return SCROLLEDWINDOW_GET_CHILD(widget); } static char** targets2array(char *target0, va_list ap, int *nelm) { int al = 16; char **targets = calloc(16, sizeof(char*)); targets[0] = target0; int i = 1; char *target; while((target = va_arg(ap, char*)) != NULL) { if(i >= al) { al *= 2; targets = realloc(targets, al*sizeof(char*)); } targets[i] = target; i++; } *nelm = i; return targets; } /* static GtkTargetEntry* targetstr2gtktargets(char **str, int nelm) { GtkTargetEntry *targets = calloc(nelm, sizeof(GtkTargetEntry)); for(int i=0;i<nelm;i++) { targets[i].target = str[i]; } return targets; } */ void ui_table_dragsource(UIWIDGET tablewidget, int actions, char *target0, ...) { va_list ap; va_start(ap, target0); int nelm; char **targets = targets2array(target0, ap, &nelm); va_end(ap); // disabled //ui_table_dragsource_a(tablewidget, actions, targets, nelm); free(targets); } /* void ui_table_dragsource_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) { GtkTargetEntry* t = targetstr2gtktargets(targets, nelm); gtk_tree_view_enable_model_drag_source( GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)), GDK_BUTTON1_MASK, t, nelm, GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK); free(t); } void ui_table_dragdest(UIWIDGET tablewidget, int actions, char *target0, ...) { va_list ap; va_start(ap, target0); int nelm; char **targets = targets2array(target0, ap, &nelm); va_end(ap); ui_table_dragdest_a(tablewidget, actions, targets, nelm); free(targets); } void ui_table_dragdest_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) { GtkTargetEntry* t = targetstr2gtktargets(targets, nelm); gtk_tree_view_enable_model_drag_dest( GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)), t, nelm, GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK); free(t); } */ void ui_listview_update(UiList *list, int i) { UiListView *view = list->obj; GtkListStore *store = create_list_store(list, view->model); gtk_tree_view_set_model(GTK_TREE_VIEW(view->widget), GTK_TREE_MODEL(store)); g_object_unref(G_OBJECT(store)); } UiListSelection ui_listview_getselection(UiList *list) { UiListView *view = list->obj; UiListSelection selection = ui_listview_selection( gtk_tree_view_get_selection(GTK_TREE_VIEW(view->widget)), NULL); return selection; } void ui_listview_setselection(UiList *list, UiListSelection selection) { UiListView *view = list->obj; GtkTreeSelection *sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(view->widget)); GtkTreePath *path = gtk_tree_path_new_from_indicesv(selection.rows, selection.count); gtk_tree_selection_select_path(sel, path); //g_object_unref(path); } void ui_listview_destroy(GtkWidget *w, UiListView *v) { //gtk_tree_view_set_model(GTK_TREE_VIEW(w), NULL); ui_destroy_boundvar(v->obj->ctx, v->var); free(v); } void ui_combobox_destroy(GtkWidget *w, UiListView *v) { ui_destroy_boundvar(v->obj->ctx, v->var); free(v); } void ui_listview_activate_event( GtkTreeView *treeview, GtkTreePath *path, GtkTreeViewColumn *column, UiTreeEventData *event) { UiListSelection selection = ui_listview_selection( gtk_tree_view_get_selection(treeview), event); UiEvent e; e.obj = event->obj; e.window = event->obj->window; e.document = event->obj->ctx->document; e.eventdata = &selection; e.intval = selection.count > 0 ? selection.rows[0] : -1; event->activate(&e, event->activatedata); if(selection.count > 0) { free(selection.rows); } } void ui_listview_selection_event( GtkTreeSelection *treeselection, UiTreeEventData *event) { UiListSelection selection = ui_listview_selection(treeselection, event); UiEvent e; e.obj = event->obj; e.window = event->obj->window; e.document = event->obj->ctx->document; e.eventdata = &selection; e.intval = selection.count > 0 ? selection.rows[0] : -1; event->selection(&e, event->selectiondata); if(selection.count > 0) { free(selection.rows); } } UiListSelection ui_listview_selection( GtkTreeSelection *selection, UiTreeEventData *event) { GList *rows = gtk_tree_selection_get_selected_rows(selection, NULL); UiListSelection ls; ls.count = g_list_length(rows); ls.rows = calloc(ls.count, sizeof(int)); GList *r = rows; int i = 0; while(r) { GtkTreePath *path = r->data; ls.rows[i] = ui_tree_path_list_index(path); r = r->next; i++; } return ls; } int ui_tree_path_list_index(GtkTreePath *path) { int depth = gtk_tree_path_get_depth(path); if(depth == 0) { fprintf(stderr, "UiError: treeview selection: depth == 0\n"); return -1; } int *indices = gtk_tree_path_get_indices(path); return indices[depth - 1]; } /* --------------------------- ComboBox --------------------------- */ UIWIDGET ui_combobox_create(UiObject *obj, UiListArgs args) { UiObject* current = uic_current_obj(obj); UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1); model->getvalue = args.getvalue ? args.getvalue : ui_strmodel_getvalue; UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST); GtkWidget *combobox = ui_create_combobox(obj, model, var, args.onactivate, args.onactivatedata); ui_set_name_and_style(combobox, args.name, args.style_class); ui_set_widget_groups(obj->ctx, combobox, args.groups); UI_APPLY_LAYOUT1(current, args); current->container->add(current->container, combobox, FALSE); current->container->current = combobox; return combobox; } GtkWidget* ui_create_combobox(UiObject *obj, UiModel *model, UiVar *var, ui_callback f, void *udata) { GtkWidget *combobox = gtk_combo_box_new(); UiListView *uicbox = malloc(sizeof(UiListView)); uicbox->obj = obj; uicbox->widget = combobox; UiList *list = var ? var->value : NULL; GtkListStore *listmodel = create_list_store(list, model); if(listmodel) { gtk_combo_box_set_model(GTK_COMBO_BOX(combobox), GTK_TREE_MODEL(listmodel)); g_object_unref(listmodel); } uicbox->var = var; uicbox->model = model; g_signal_connect( combobox, "destroy", G_CALLBACK(ui_combobox_destroy), uicbox); // bind var if(list) { list->update = ui_combobox_modelupdate; list->getselection = ui_combobox_getselection; list->setselection = ui_combobox_setselection; list->obj = uicbox; } GtkCellRenderer *renderer = gtk_cell_renderer_text_new(); gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combobox), renderer, TRUE); gtk_cell_layout_set_attributes( GTK_CELL_LAYOUT(combobox), renderer, "text", 0, NULL); gtk_combo_box_set_active(GTK_COMBO_BOX(combobox), 0); // add callback if(f) { UiEventData *event = ui_malloc(obj->ctx, sizeof(UiEventData)); event->obj = obj; event->userdata = udata; event->callback = f; event->value = 0; event->customdata = NULL; g_signal_connect( combobox, "changed", G_CALLBACK(ui_combobox_change_event), event); } return combobox; } void ui_combobox_change_event(GtkComboBox *widget, UiEventData *e) { UiEvent event; event.obj = e->obj; event.window = event.obj->window; event.document = event.obj->ctx->document; event.eventdata = NULL; event.intval = gtk_combo_box_get_active(widget); e->callback(&event, e->userdata); } void ui_combobox_modelupdate(UiList *list, int i) { UiListView *view = list->obj; GtkListStore *store = create_list_store(view->var->value, view->model); gtk_combo_box_set_model(GTK_COMBO_BOX(view->widget), GTK_TREE_MODEL(store)); g_object_unref(store); } UiListSelection ui_combobox_getselection(UiList *list) { UiListView *combobox = list->obj; UiListSelection ret; ret.rows = malloc(sizeof(int*)); ret.count = 1; ret.rows[0] = gtk_combo_box_get_active(GTK_COMBO_BOX(combobox->widget)); return ret; } void ui_combobox_setselection(UiList *list, UiListSelection selection) { UiListView *combobox = list->obj; if(selection.count > 0) { gtk_combo_box_set_active(GTK_COMBO_BOX(combobox->widget), selection.rows[0]); } }