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- | + | = Toolbars = | |
+ | Toolbars usually simplify the customization of widget look and layout by grouping widgets. The Hildon framework provides two specialized toolbars: HildonFindToolbar and HildonEditToolbar. You can also use GtkToolbars in your Hildon application. | ||
- | |||
==Find toolbars == | ==Find toolbars == | ||
+ | HildonFindToolbar is a toolbar that contains a search entry and a dropdown list with previously searched strings. An internal GtkListStore stores the items in the dropdown list. This list is a property of the widget called "list". | ||
- | + | To create a HildonFindToolbar, use the following: | |
- | |||
- | |||
hildon.FindToolbar(label, model=None, column=-1) | hildon.FindToolbar(label, model=None, column=-1) | ||
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In both functions the argument label is used as label which be displayed as label for the dropdown box. | In both functions the argument label is used as label which be displayed as label for the dropdown box. | ||
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If you use the first function to create the toolbar, set the properties "list" and "column" manually. | If you use the first function to create the toolbar, set the properties "list" and "column" manually. | ||
- | This widget provides | + | This widget provides the function f for set and retrieve the index in the model of the current active item on the combo. An index -1 indicates no active items in both functions. |
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- | + | def set_active(self, index) | |
+ | def get_active(self) | ||
- | + | To get the index of the most recently added item in the toolbar, use the following function: | |
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- | + | ||
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- | + | ||
- | + | def get_last_index(self) | |
- | + | Alternatively, you can use a GtkTreeIter to reference the current active item. | |
- | + | ||
- | + | ||
- | def | + | def set_active_iter(self, iter) |
- | + | def get_active_iter(self) | |
- | + | ||
- | + | After creating and properly setting up the toolbar, attach it to any window. HildonWindow provides the following function to attach a toolbar: | |
- | + | ||
- | + | def add_toolbar(self, toolbar) | |
- | + | ||
- | + | In case you need to add a common toolbar to all windows in your program, HildonProgram provides the following function to set and retrtieve a common toolbar to each window registered into the curretn program: | |
- | + | def set_common_toolbar(self, toolbar) | |
+ | def get_common_toolbar(self) | ||
- | + | Here a simple example that shows how to deal with a HildonFindToolbar. | |
- | + | ||
- | + | ||
- | + | [[Image:example-toolbar.png|400px]] | |
- | + | '''Example 4.1. Using a Find Toolbar''' | |
- | + | ||
- | |||
- | |||
- | iter = store.append() | + | # Based on C code from: |
- | store.set(iter, 0, "Bar") | + | # "Hildon Tutorial" version 2009-04-28 |
+ | # Example 4.1, "Using a Find Toolbar" | ||
+ | |||
+ | import sys | ||
+ | |||
+ | import gobject | ||
+ | import gtk | ||
+ | import hildon | ||
+ | |||
+ | def on_history_append(toolbar, user_data): | ||
+ | # Get last added index | ||
+ | index = toolbar.get_last_index() | ||
+ | |||
+ | # Get the inner list | ||
+ | list = toolbar.get("list") | ||
+ | |||
+ | # Get the item | ||
+ | iter = list.get_iter_from_string("%d" % index) | ||
+ | |||
+ | item, = list.get(iter, 0) | ||
+ | |||
+ | print sys.stderr, "ADDED TO THE LIST : %s" % item | ||
+ | |||
+ | def main(): | ||
+ | program = hildon.hildon_program_get_instance() | ||
+ | window = hildon.Window() | ||
+ | |||
+ | program.add_window(window) | ||
+ | |||
+ | # Create and populate history list model | ||
+ | store = gtk.ListStore(gobject.TYPE_STRING) | ||
+ | |||
+ | iter = store.append() | ||
+ | store.set(iter, 0, "Foo") | ||
+ | |||
+ | iter = store.append() | ||
+ | store.set(iter, 0, "Bar") | ||
+ | |||
+ | iter = store.append() | ||
+ | store.set(iter, 0, "Baz") | ||
+ | |||
+ | # Create find toolbar | ||
+ | toolbar = hildon.FindToolbar("Find", store, 0) | ||
+ | |||
+ | # Set item on index 0 as the current active | ||
+ | toolbar.set_active(0) | ||
+ | |||
+ | # Attach a callback to handle "history-append" signal | ||
+ | toolbar.connect_after("history-append", on_history_append, None) | ||
+ | |||
+ | # Attach toolbar to window | ||
+ | window.add_toolbar(toolbar) | ||
+ | |||
+ | window.show_all() | ||
+ | |||
+ | gtk.main() | ||
+ | |||
+ | if __name__ == "__main__": | ||
+ | main() | ||
- | |||
- | |||
- | + | In the example above a callback is set to handle the signal "history-append", emitted by the toolbar when a new item is added to the history. Other signals like "history-append" can trigger additional actions when emitted. | |
- | + | ||
- | + | Apart from the property which stores the internal list, other properties are available such as "max-characters", which set the maximum length of the search string. For a complete description of the signals and properties available, see the Hildon reference manual. | |
- | + | ||
- | + | ==Edit toolbars == | |
- | + | Edit toolbars are implemented by the widget HildonEditToolbar. This widget is a toolbar to be used as main control and navigation interface for the edit UI mode. The toolbar contains a label and two buttons, being one of them an arrow pointing backwards and the other a button to perform a certain action. It also display a label which explain to the users the action that the button performs and give intructions to user on how to perform the action properly. | |
- | + | A typical example could be a view to delete several items in a list. The label would advice the user to select the items to delete and those items are deleted by clicking the button. | |
- | + | ||
- | + | Typically, the toolbar is attached to an edit view, meaning a HildonStackableWindow used in the program to perform a certain editing action. | |
- | + | The action to be performing by clicking the action button should be implemented in a callback to handle the signal "button-clicked", shown in the example. | |
- | + | To create a new HildonEditToolbar, use: | |
- | + | ||
- | + | ||
- | + | ||
- | + | hildon.EditToolbar(label = None, button = None) | |
- | |||
- | + | The second creation function allows to set the two labels of the widget. If you use the simple creation function, set the labels by using the following functions. | |
- | + | def set_label(self, label) | |
+ | def set_button_label(self, label) | ||
- | + | When the edit toolbar is configured, attach it to a window by using: | |
- | + | def add_toolbar(self, toolbar) | |
- | + | Implement the action to be done by clicking the button in a callback attached to the signal "button-clicked". These widgets define also another signal, "arrow-clicked", emitted when users click the arrow. Typically, the callback for the signal "arrow-clicked" destroys the current edit view. | |
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- | The | + | The example below shows how to use an edit toolbar. This example builds a main window showing a list of items and a button to go to a edit view where users can select several items and deleted by clicking the action button of the toolbar. |
[[Image:Edit_toolbar_list_view.png|400px]] | [[Image:Edit_toolbar_list_view.png|400px]] | ||
'''Example 4.2. Using an Edit Toolbar''' | '''Example 4.2. Using an Edit Toolbar''' | ||
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- | store = None | + | # Based on C code from: |
- | + | # "Hildon Tutorial" version 2009-04-28 | |
- | def get_model(): | + | # Example 4.2, "Using an Edit Toolbar" |
- | + | ||
- | + | import gobject | |
- | if store is not None: | + | import gtk |
+ | import hildon | ||
+ | |||
+ | store = None | ||
+ | |||
+ | def get_model(): | ||
+ | global store | ||
+ | |||
+ | if store is not None: | ||
+ | return store | ||
+ | |||
+ | store = gtk.ListStore(gobject.TYPE_STRING) | ||
+ | for i in xrange(50): | ||
+ | str = "\nRow %d\n" % i | ||
+ | store.insert(i, [str]) | ||
+ | |||
return store | return store | ||
+ | |||
+ | def create_treeview(tvmode): | ||
+ | tv = hildon.GtkTreeView(tvmode) | ||
+ | renderer = gtk.CellRendererText() | ||
+ | col = gtk.TreeViewColumn("Title", renderer, text=0) | ||
+ | |||
+ | tv.append_column(col) | ||
+ | |||
+ | # Set multiple selection mode | ||
+ | selection = tv.get_selection() | ||
+ | selection.set_mode(gtk.SELECTION_MULTIPLE) | ||
+ | |||
+ | model = get_model() | ||
+ | |||
+ | tv.set_model(model) | ||
+ | |||
+ | return tv | ||
+ | |||
+ | def delete_button_clicked(button, treeview): | ||
+ | selection = treeview.get_selection() | ||
+ | |||
+ | (model, selected_rows) = selection.get_selected_rows() | ||
+ | |||
+ | row_references = [] | ||
+ | for path in selected_rows: | ||
+ | ref = gtk.TreeRowReference(model, path) | ||
+ | row_references.append(ref) | ||
+ | |||
+ | for ref in row_references: | ||
+ | path = ref.get_path() | ||
+ | iter = model.get_iter(path) | ||
+ | model.remove(iter) | ||
+ | |||
+ | def edit_window(button): | ||
+ | window = hildon.StackableWindow() | ||
+ | window.set_border_width(6) | ||
+ | |||
+ | # Create a new edit toolbar | ||
+ | toolbar = hildon.EditToolbar("Choose items to delete", "Delete") | ||
+ | |||
+ | area = hildon.PannableArea() | ||
+ | tree_view = create_treeview(gtk.HILDON_UI_MODE_EDIT) | ||
+ | |||
+ | # Add toolbar to the window | ||
+ | window.set_edit_toolbar(toolbar) | ||
+ | |||
+ | area.add(tree_view) | ||
+ | window.add(area) | ||
+ | |||
+ | toolbar.connect("button-clicked", delete_button_clicked, tree_view) | ||
+ | |||
+ | toolbar.connect_object("arrow-clicked", gtk.Window.destroy, window) | ||
+ | |||
+ | window.show_all() | ||
+ | |||
+ | # Set window to fullscreen | ||
+ | window.fullscreen() | ||
+ | |||
+ | def main(): | ||
+ | window = hildon.StackableWindow() | ||
+ | window.connect("destroy", gtk.main_quit) | ||
+ | |||
+ | vbox = gtk.VBox(False, 10) | ||
+ | area = hildon.PannableArea() | ||
+ | |||
+ | tree_view = create_treeview(gtk.HILDON_UI_MODE_NORMAL) | ||
+ | |||
+ | button = hildon.GtkButton(gtk.HILDON_SIZE_AUTO_WIDTH | gtk.HILDON_SIZE_FINGER_HEIGHT) | ||
+ | button.set_label("Delete some items") | ||
+ | |||
+ | area.add(tree_view) | ||
+ | vbox.pack_start(area, True, True, 0) | ||
+ | vbox.pack_start(button, False, False, 0) | ||
+ | |||
+ | window.add(vbox) | ||
+ | |||
+ | button.connect("clicked", edit_window) | ||
+ | |||
+ | window.show_all() | ||
+ | |||
+ | gtk.main() | ||
+ | |||
+ | if __name__ == "__main__": | ||
+ | main() | ||
- | |||
- | |||
- | |||
- | |||
- | + | The most things related to HildonEditToolbar is in the function edit_window. This function creates a edit view, meaning that a new HildonStackableWindow is created showing a treeview in which users can select several items. | |
- | + | Note that the edit window is set to fullscreen and thus displaying the HildonEditToolbar obscures the usual window controls. | |
- | + | ||
- | + | ||
- | + | ||
- | + | == Using GtkToolbars in Hildon applications == | |
+ | Use the widget GtkToolbar as you would use it in a GTK+ application, but consider the following: | ||
- | + | * Use GtkToolbars when only one content item is visible (for example when editing a single image or editing a single email). | |
- | + | * Provide no menu commands or settings for hiding or showing toolbar. The toolbar is always shown in the view where you decided to put it. | |
- | + | ||
- | + | Like the others toolbars, attach a GtkToolbar to a window by using: | |
- | + | def add_toolbar(self, toolbar) | |
- | + | The following example shows how to use a GtkToolBar. The use is very close to how it would be use in a normal GTK+ application. | |
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- | The following example shows how to use a | + | |
[[Image:example-gtktoolbar.png|400px]] | [[Image:example-gtktoolbar.png|400px]] | ||
'''Example 4.3. Using a GtkToolbar in a Hildon application''' | '''Example 4.3. Using a GtkToolbar in a Hildon application''' | ||
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- | + | # Based on C code from: | |
+ | # "Hildon Tutorial" version 2009-04-28 | ||
+ | # Example 4.3, "Using a GtkToolbar in a Hildon application" | ||
+ | |||
+ | import gtk | ||
+ | import hildon | ||
+ | |||
+ | def app_quit(widget, data=None): | ||
+ | gtk.main_quit() | ||
+ | |||
+ | def on_clicked (toolbutton, index): | ||
+ | print "Index of clicked item : %d" % index | ||
+ | |||
+ | def main(): | ||
+ | program = hildon.hildon_program_get_instance() | ||
+ | gtk.set_application_name("hildon-touch-selector example program") | ||
+ | |||
+ | window = hildon.StackableWindow() | ||
+ | program.add_window(window) | ||
+ | |||
+ | # Create a toolbar | ||
+ | toolbar = gtk.Toolbar() | ||
+ | |||
+ | # Add items to the toolbar | ||
+ | toolitem = gtk.ToolButton(gtk.image_new_from_stock(gtk.STOCK_HOME, | ||
+ | gtk.ICON_SIZE_LARGE_TOOLBAR), | ||
+ | "Home") | ||
+ | toolitem.connect("clicked", on_clicked, 0) | ||
+ | toolbar.insert(toolitem, 0) | ||
+ | |||
+ | toolitem = gtk.ToolButton(gtk.image_new_from_stock(gtk.STOCK_GO_BACK, | ||
+ | gtk.ICON_SIZE_LARGE_TOOLBAR), | ||
+ | "Back") | ||
+ | toolitem.connect("clicked", on_clicked, 1) | ||
+ | toolbar.insert(toolitem, 1) | ||
+ | |||
+ | |||
+ | toolitem = gtk.ToolButton(gtk.image_new_from_stock(gtk.STOCK_GO_FORWARD, | ||
+ | gtk.ICON_SIZE_LARGE_TOOLBAR), | ||
+ | "Forward") | ||
+ | toolitem.connect("clicked", on_clicked, 2) | ||
+ | toolbar.insert(toolitem, 2) | ||
+ | |||
+ | # Add toolbar to the window | ||
+ | window.add_toolbar(toolbar) | ||
+ | |||
+ | window.connect("destroy", app_quit) | ||
+ | window.show_all() | ||
+ | gtk.main() | ||
+ | |||
+ | if __name__ == "__main__": | ||
+ | main() |
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