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Open3D的所有窗口小部件
- Open3D的所有窗口小部件
- 1. Open3D提供了类似QT的小Widget
- 2. 使用代码展示
- 3. 结果展示
Open3D的所有窗口小部件
参考：https://www.open3d.org/docs/release/python_example/visualization/index.html#all-widgets-py
1. Open3D提供了类似QT的小Widget
- TextEdit
- Button
- Horiz
- Label
- CollapsableVert
- Color
- Checkbox
- ColorEdit
- Combobox
- ImageWidget
- ListView
- TreeView
- NumberEdit
- ProgressBar
- Slider
- TextEdit
- VectorEdit
- VGrid
- TabControl
- StackedWidge
- ToggleSwitch
2. 使用代码展示
# ----------------------------------------------------------------------------
# - Open3D: www.open3d.org -
# ----------------------------------------------------------------------------
# Copyright (c) 2018-2024 www.open3d.org
# SPDX-License-Identifier: MIT
# ----------------------------------------------------------------------------import open3d.visualization.gui as gui
import os.path
import platformbasedir = os.path.dirname(os.path.realpath(__file__))# This is all-widgets.py with some modifications for non-English languages.
# Please see all-widgets.py for usage of the GUI widgetsMODE_SERIF = "serif"
MODE_COMMON_HANYU = "common"
MODE_SERIF_AND_COMMON_HANYU = "serif+common"
MODE_COMMON_HANYU_EN = "hanyu_en+common"
MODE_ALL_HANYU = "all"
MODE_CUSTOM_CHARS = "custom"#mode = MODE_SERIF
#mode = MODE_COMMON_HANYU
# mode = MODE_SERIF_AND_COMMON_HANYU
mode = MODE_ALL_HANYU
#mode = MODE_CUSTOM_CHARS
def font_set():global serif, hanzi, chess# Fonts can be names or pathsif platform.system() == "Darwin":serif = "Times New Roman"hanzi = "STHeiti Light"chess = "/System/Library/Fonts/Apple Symbols.ttf"elif platform.system() == "Windows":# it is necessary to specify paths on Windows since it stores its fonts# with a cryptic name, so font name searches do not work on Windowsserif = "c:/windows/fonts/times.ttf" # Times New Romanhanzi = "c:/windows/fonts/msyh.ttc" # YaHei UIchess = "c:/windows/fonts/seguisym.ttf" # Segoe UI Symbolelse:# Assumes Ubuntu 20.04serif = "DejaVuSerif"hanzi = "NotoSansCJK"chess = "/usr/share/fonts/truetype/freefont/FreeSerif.ttf"
def main():font_set()gui.Application.instance.initialize()# Font changes must be done after initialization but before creating# a window.font = set_font()if font is not None:gui.Application.instance.set_font(gui.Application.DEFAULT_FONT_ID, font)ExampleWindow()gui.Application.instance.run()def set_font():# MODE_SERIF changes the English font; Chinese will not be displayedfont = Noneif mode == MODE_SERIF:font = gui.FontDescription(serif)# MODE_COMMON_HANYU uses the default English font and adds common Chineseelif mode == MODE_COMMON_HANYU:font = gui.FontDescription()font.add_typeface_for_language(hanzi, "zh")# MODE_SERIF_AND_COMMON_HANYU uses a serif English font and adds common# Chinese characterselif mode == MODE_SERIF_AND_COMMON_HANYU:font = gui.FontDescription(serif)font.add_typeface_for_language(hanzi, "zh")# MODE_COMMON_HANYU_EN the Chinese font for both English and the common# characterselif mode == MODE_COMMON_HANYU_EN:font = gui.FontDescription(hanzi)font.add_typeface_for_language(hanzi, "zh")# MODE_ALL_HANYU uses the default English font but includes all the Chinese# characters (which uses a substantial amount of memory)elif mode == MODE_ALL_HANYU:font = gui.FontDescription()font.add_typeface_for_language(hanzi, "zh_all")elif mode == MODE_CUSTOM_CHARS:range = [0x2654, 0x2655, 0x2656, 0x2657, 0x2658, 0x2659]font = gui.FontDescription()font.add_typeface_for_code_points(chess, range)return fontclass ExampleWindow:MENU_CHECKABLE = 1MENU_DISABLED = 2MENU_QUIT = 3def __init__(self):self.window = gui.Application.instance.create_window("Test", 400, 768)# self.window = gui.Application.instance.create_window("Test", 400, 768,# x=50, y=100)w = self.window # for more concise code# Rather than specifying sizes in pixels, which may vary in size based# on the monitor, especially on macOS which has 220 dpi monitors, use# the em-size. This way sizings will be proportional to the font size,# which will create a more visually consistent size across platforms.em = w.theme.font_size# Widgets are laid out in layouts: gui.Horiz, gui.Vert,# gui.CollapsableVert, and gui.VGrid. By nesting the layouts we can# achieve complex designs. Usually we use a vertical layout as the# topmost widget, since widgets tend to be organized from top to bottom.# Within that, we usually have a series of horizontal layouts for each# row.layout = gui.Vert(0, gui.Margins(0.5 * em, 0.5 * em, 0.5 * em,0.5 * em))# Create the menu. The menu is global (because the macOS menu is global),# so only create it once.if gui.Application.instance.menubar is None:menubar = gui.Menu()test_menu = gui.Menu()test_menu.add_item("An option", ExampleWindow.MENU_CHECKABLE)test_menu.set_checked(ExampleWindow.MENU_CHECKABLE, True)test_menu.add_item("Unavailable feature",ExampleWindow.MENU_DISABLED)test_menu.set_enabled(ExampleWindow.MENU_DISABLED, False)test_menu.add_separator()test_menu.add_item("Quit", ExampleWindow.MENU_QUIT)# On macOS the first menu item is the application menu item and will# always be the name of the application (probably "Python"),# regardless of what you pass in here. The application menu is# typically where About..., Preferences..., and Quit go.menubar.add_menu("Test", test_menu)gui.Application.instance.menubar = menubar# Each window needs to know what to do with the menu items, so we need# to tell the window how to handle menu items.w.set_on_menu_item_activated(ExampleWindow.MENU_CHECKABLE,self._on_menu_checkable)w.set_on_menu_item_activated(ExampleWindow.MENU_QUIT,self._on_menu_quit)# Create a file-chooser widget. One part will be a text edit widget for# the filename and clicking on the button will let the user choose using# the file dialog.self._fileedit = gui.TextEdit()filedlgbutton = gui.Button("选择文件(Button)")filedlgbutton.horizontal_padding_em = 0.5filedlgbutton.vertical_padding_em = 0filedlgbutton.set_on_clicked(self._on_filedlg_button)self._fileedit.placeholder_text = "TextEdit"# (Create the horizontal widget for the row. This will make sure the# text editor takes up as much space as it can.)fileedit_layout = gui.Horiz()fileedit_layout.add_child(gui.Label("模型文件(Label)"))fileedit_layout.add_child(self._fileedit)fileedit_layout.add_fixed(0.25 * em)fileedit_layout.add_child(filedlgbutton)# add to the top-level (vertical) layoutlayout.add_child(fileedit_layout)# Create a collapsible vertical widget, which takes up enough vertical# space for all its children when open, but only enough for text when# closed. This is useful for property pages, so the user can hide sets# of properties they rarely use. All layouts take a spacing parameter,# which is the spacinging between items in the widget, and a margins# parameter, which specifies the spacing of the left, top, right,# bottom margins. (This acts like the 'padding' property in CSS.)collapse = gui.CollapsableVert("可折叠垂直布局CollapsableVert", 0.33 * em,gui.Margins(em, 0, 0, 0))if mode == MODE_CUSTOM_CHARS:self._label = gui.Label("♔♕♖♗♘♙Label")elif mode == MODE_ALL_HANYU:self._label = gui.Label("天地玄黃，宇宙洪荒。日月盈昃，辰宿列張。Label")else:self._label = gui.Label("锄禾日当午，汗滴禾下土。谁知盘中餐，粒粒皆辛苦。Label")self._label.text_color = gui.Color(1.0, 0.5, 0.0)collapse.add_child(self._label)# Create a checkbox. Checking or unchecking would usually be used to set# a binary property, but in this case it will show a simple message box,# which illustrates how to create simple dialogs.cb = gui.Checkbox("复选框Checkbox")cb.set_on_checked(self._on_cb) # set the callback functioncollapse.add_child(cb)# Create a color editor. We will change the color of the orange label# above when the color changes.color = gui.ColorEdit()color.color_value = self._label.text_colorcolor.set_on_value_changed(self._on_color)colorlayout = gui.Horiz()colorlayout.add_child(gui.Label("ColorEdit:"))colorlayout.add_child(color)collapse.add_child(colorlayout)# This is a combobox, nothing fancy here, just set a simple function to# handle the user selecting an item.combo = gui.Combobox()combo.add_item("Combobox展示")combo.add_item("Show point velocity")combo.add_item("Show bounding boxes")combo.set_on_selection_changed(self._on_combo)collapse.add_child(combo)# This is a toggle switch, which is similar to a checkbox. To my way of# thinking the difference is subtle: a checkbox toggles properties# (for example, purely visual changes like enabling lighting) while a# toggle switch is better for changing the behavior of the app (for# example, turning on processing from the camera).switch = gui.ToggleSwitch("按钮ToggleSwitch")switch.set_on_clicked(self._on_switch)collapse.add_child(switch)self.logo_idx = 0proxy = gui.WidgetProxy()def switch_proxy():self.logo_idx += 1if self.logo_idx % 3 == 0:proxy.set_widget(None)elif self.logo_idx % 3 == 1:# Add a simple imagelogo = gui.ImageWidget(basedir + "/icon-32.png")proxy.set_widget(logo)else:label = gui.Label('Open3D: A Modern Library for 3D Data Processing')proxy.set_widget(label)w.set_needs_layout()logo_btn = gui.Button('点击显示不同的小部件 WidgetProxy')logo_btn.vertical_padding_em = 0logo_btn.background_color = gui.Color(r=0, b=0.5, g=0)logo_btn.set_on_clicked(switch_proxy)collapse.add_child(logo_btn)collapse.add_child(proxy)# Widget stack demoself._widget_idx = 0hz = gui.Horiz(spacing=5)push_widget_btn = gui.Button('Push widget')push_widget_btn.vertical_padding_em = 0pop_widget_btn = gui.Button('Pop widget')pop_widget_btn.vertical_padding_em = 0stack = gui.WidgetStack()stack.set_on_top(lambda w: print(f'New widget is: {w.text}'))hz.add_child(gui.Label('WidgetStack '))hz.add_child(push_widget_btn)hz.add_child(pop_widget_btn)hz.add_child(stack)collapse.add_child(hz)def push_widget():self._widget_idx += 1stack.push_widget(gui.Label(f'Widget {self._widget_idx}'))push_widget_btn.set_on_clicked(push_widget)pop_widget_btn.set_on_clicked(stack.pop_widget)# Add a list of itemslv = gui.ListView()lv.set_items(["ListView", "Trees", "Buildings", "Cars", "People", "Cats"])lv.selected_index = lv.selected_index + 2 # initially is -1, so now 1lv.set_max_visible_items(4)lv.set_on_selection_changed(self._on_list)collapse.add_child(lv)# Add a tree viewtree = gui.TreeView()tree.add_text_item(tree.get_root_item(), "TreeView")geo_id = tree.add_text_item(tree.get_root_item(), "Geometries")mesh_id = tree.add_text_item(geo_id, "Mesh")tree.add_text_item(mesh_id, "Triangles")tree.add_text_item(mesh_id, "Albedo texture")tree.add_text_item(mesh_id, "Normal map")points_id = tree.add_text_item(geo_id, "Points")tree.can_select_items_with_children = Truetree.set_on_selection_changed(self._on_tree)# does not call on_selection_changed: user did not change selectiontree.selected_item = points_idcollapse.add_child(tree)# Add two number editors, one for integers and one for floating point# Number editor can clamp numbers to a range, although this is more# useful for integers than for floating point.intedit = gui.NumberEdit(gui.NumberEdit.INT)intedit.int_value = 0intedit.set_limits(1, 19) # value coerced to 1intedit.int_value = intedit.int_value + 2 # value should be 3doubleedit = gui.NumberEdit(gui.NumberEdit.DOUBLE)numlayout = gui.Horiz()numlayout.add_child(gui.Label("NumberEdit："))numlayout.add_child(gui.Label("int"))numlayout.add_child(intedit)numlayout.add_fixed(em) # manual spacing (could set it in Horiz() ctor)numlayout.add_child(gui.Label("double"))numlayout.add_child(doubleedit)collapse.add_child(numlayout)# Create a progress bar. It ranges from 0.0 to 1.0.self._progress = gui.ProgressBar()self._progress.value = 0.25 # 25% completeself._progress.value = self._progress.value + 0.08 # 0.25 + 0.08 = 33%prog_layout = gui.Horiz(em)prog_layout.add_child(gui.Label("Progress："))prog_layout.add_child(self._progress)collapse.add_child(prog_layout)# Create a slider. It acts very similar to NumberEdit except that the# user moves a slider and cannot type the number.slider = gui.Slider(gui.Slider.INT)slider.set_limits(5, 13)slider.set_on_value_changed(self._on_slider)slider_layout = gui.Horiz(em)slider_layout.add_child(gui.Label("Slider："))slider_layout.add_child(slider)# collapse.add_child(prog_layout)collapse.add_child(slider_layout)# Create a text editor. The placeholder text (if not empty) will be# displayed when there is no text, as concise help, or visible tooltip.tedit = gui.TextEdit()tedit.placeholder_text = "Edit me some text here(TextEdit)"# on_text_changed fires whenever the user changes the text (but not if# the text_value property is assigned to).tedit.set_on_text_changed(self._on_text_changed)# on_value_changed fires whenever the user signals that they are finished# editing the text, either by pressing return or by clicking outside of# the text editor, thus losing text focus.tedit.set_on_value_changed(self._on_value_changed)collapse.add_child(tedit)# Create a widget for showing/editing a 3D vectorvedit = gui.VectorEdit()vedit.vector_value = [1, 2, 3]vedit.set_on_value_changed(self._on_vedit)vedit_layout = gui.Horiz(em)vedit_layout.add_child(gui.Label("VectorEdit 3Vector"))vedit_layout.add_child(vedit)collapse.add_child(vedit_layout)# Create a VGrid layout. This layout specifies the number of columns# (two, in this case), and will place the first child in the first# column, the second in the second, the third in the first, the fourth# in the second, etc.# So:# 2 cols 3 cols 4 cols# | 1 | 2 | | 1 | 2 | 3 | | 1 | 2 | 3 | 4 |# | 3 | 4 | | 4 | 5 | 6 | | 5 | 6 | 7 | 8 |# | 5 | 6 | | 7 | 8 | 9 | | 9 | 10 | 11 | 12 |# | ... | | ... | | ... |vgrid = gui.VGrid(2)vgrid.add_child(gui.Label("VGrid"))vgrid.add_child(gui.Label("12 items"))vgrid.add_child(gui.Label("People"))vgrid.add_child(gui.Label("2 (93% certainty)"))vgrid.add_child(gui.Label("Cars"))vgrid.add_child(gui.Label("5 (87% certainty)"))collapse.add_child(vgrid)# Create a tab control. This is really a set of N layouts on top of each# other, but with only one selected.tabs = gui.TabControl()tab1 = gui.Vert()tab1.add_child(gui.Checkbox("Enable option 1"))tab1.add_child(gui.Checkbox("Enable option 2"))tab1.add_child(gui.Checkbox("Enable option 3"))tabs.add_tab("Options(TabControl)", tab1)tab2 = gui.Vert()tab2.add_child(gui.Label("No plugins detected"))tab2.add_stretch()tabs.add_tab("Plugins", tab2)tab3 = gui.RadioButton(gui.RadioButton.VERT)tab3.set_items(["RadioButton", "Apple", "Orange"])def vt_changed(idx):print(f"current cargo: {tab3.selected_value}")tab3.set_on_selection_changed(vt_changed)tabs.add_tab("Cargo", tab3)tab4 = gui.RadioButton(gui.RadioButton.HORIZ)tab4.set_items(["Air plane", "Train", "Bus"])def hz_changed(idx):print(f"current traffic plan: {tab4.selected_value}")tab4.set_on_selection_changed(hz_changed)tabs.add_tab("Traffic", tab4)collapse.add_child(tabs)# Quit button. (Typically this is a menu item)button_layout = gui.Horiz()ok_button = gui.Button("Ok")ok_button.set_on_clicked(self._on_ok)button_layout.add_stretch()button_layout.add_child(ok_button)layout.add_child(collapse)collapse2 = gui.CollapsableVert("可折叠垂直布局CollapsableVert", 0.33 * em,gui.Margins(em, 0, 0, 0))sw = gui.StackedWidget()sw.add_child(gui.Button("0 StackedWidget"))sw.add_child(gui.Button("1 StackedWidget"))sw.selected_index = 1collapse2.add_child(sw)layout.add_child(collapse2)layout.add_child(button_layout)# We're done, set the window's layoutw.add_child(layout)def _on_filedlg_button(self):filedlg = gui.FileDialog(gui.FileDialog.OPEN, "Select file",self.window.theme)filedlg.add_filter(".obj .ply .stl", "Triangle mesh (.obj, .ply, .stl)")filedlg.add_filter("", "All files")filedlg.set_on_cancel(self._on_filedlg_cancel)filedlg.set_on_done(self._on_filedlg_done)self.window.show_dialog(filedlg)def _on_filedlg_cancel(self):self.window.close_dialog()def _on_filedlg_done(self, path):self._fileedit.text_value = pathself.window.close_dialog()def _on_cb(self, is_checked):if is_checked:text = "Sorry, effects are unimplemented"else:text = "Good choice"self.show_message_dialog("There might be a problem...", text)def _on_switch(self, is_on):if is_on:print("Camera would now be running")else:print("Camera would now be off")# This function is essentially the same as window.show_message_box(),# so for something this simple just use that, but it illustrates making a# dialog.def show_message_dialog(self, title, message):# A Dialog is just a widget, so you make its child a layout just like# a Window.dlg = gui.Dialog(title)# Add the message textem = self.window.theme.font_sizedlg_layout = gui.Vert(em, gui.Margins(em, em, em, em))dlg_layout.add_child(gui.Label(message))# Add the Ok button. We need to define a callback function to handle# the click.ok_button = gui.Button("Ok")ok_button.set_on_clicked(self._on_dialog_ok)# We want the Ok button to be an the right side, so we need to add# a stretch item to the layout, otherwise the button will be the size# of the entire row. A stretch item takes up as much space as it can,# which forces the button to be its minimum size.button_layout = gui.Horiz()button_layout.add_stretch()button_layout.add_child(ok_button)# Add the button layout,dlg_layout.add_child(button_layout)# ... then add the layout as the child of the Dialogdlg.add_child(dlg_layout)# ... and now we can show the dialogself.window.show_dialog(dlg)def _on_dialog_ok(self):self.window.close_dialog()def _on_color(self, new_color):self._label.text_color = new_colordef _on_combo(self, new_val, new_idx):print(new_idx, new_val)def _on_list(self, new_val, is_dbl_click):print(new_val)def _on_tree(self, new_item_id):print(new_item_id)def _on_slider(self, new_val):self._progress.value = new_val / 20.0def _on_text_changed(self, new_text):print("edit:", new_text)def _on_value_changed(self, new_text):print("value:", new_text)def _on_vedit(self, new_val):print(new_val)def _on_ok(self):gui.Application.instance.quit()def _on_menu_checkable(self):gui.Application.instance.menubar.set_checked(ExampleWindow.MENU_CHECKABLE,not gui.Application.instance.menubar.is_checked(ExampleWindow.MENU_CHECKABLE))def _on_menu_quit(self):gui.Application.instance.quit()# This class is essentially the same as window.show_message_box(),
# so for something this simple just use that, but it illustrates making a
# dialog.
class MessageBox:def __init__(self, title, message):self._window = None# A Dialog is just a widget, so you make its child a layout just like# a Window.dlg = gui.Dialog(title)# Add the message textem = self.window.theme.font_sizedlg_layout = gui.Vert(em, gui.Margins(em, em, em, em))dlg_layout.add_child(gui.Label(message))# Add the Ok button. We need to define a callback function to handle# the click.ok_button = gui.Button("Ok")ok_button.set_on_clicked(self._on_ok)# We want the Ok button to be an the right side, so we need to add# a stretch item to the layout, otherwise the button will be the size# of the entire row. A stretch item takes up as much space as it can,# which forces the button to be its minimum size.button_layout = gui.Horiz()button_layout.add_stretch()button_layout.add_child(ok_button)# Add the button layout,dlg_layout.add_child(button_layout)# ... then add the layout as the child of the Dialogdlg.add_child(dlg_layout)def show(self, window):self._window = windowdef _on_ok(self):self._window.close_dialog()if __name__ == "__main__":main()
3. 结果展示
