C++ TXT_SignalConnect函数代码示例

static void OpenSelectorWindow(txt_dropdown_list_t *list)
{
    txt_window_t *window;
    int i;

    // Open a simple window with no title bar or action buttons.

    window = TXT_NewWindow(NULL);

    TXT_SetWindowAction(window, TXT_HORIZ_LEFT, NULL);
    TXT_SetWindowAction(window, TXT_HORIZ_CENTER, NULL);
    TXT_SetWindowAction(window, TXT_HORIZ_RIGHT, NULL);

    // Position the window so that the currently selected item appears
    // over the top of the list widget.

    TXT_SetWindowPosition(window, TXT_HORIZ_LEFT, TXT_VERT_TOP,
                          list->widget.x - 2, SelectorWindowY(list));

    // Add a button to the window for each option in the list.

    for (i=0; i<list->num_values; ++i)
    {
        txt_button_t *button;
        callback_data_t *data;

        button = TXT_NewButton(list->values[i]);

        TXT_AddWidget(window, button);

        // Callback struct

        data = malloc(sizeof(callback_data_t));
        data->list = list;
        data->window = window;
        data->item = i;
        
        // When the button is pressed, invoke the button press callback
       
        TXT_SignalConnect(button, "pressed", ItemSelected, data);
        
        // When the window is closed, free back the callback struct

        TXT_SignalConnect(window, "closed", FreeCallbackData, data);

        // Is this the currently-selected value?  If so, select the button
        // in the window as the default.
        
        if (i == *list->variable)
        {
            TXT_SelectWidget(window, button);
        }
    }

    // Catch presses of escape in this window and close it.

    TXT_SetKeyListener(window, SelectorWindowListener, NULL);
}

static void VKBCreateWindow(txt_inputbox_t *inputbox, int charset_index)
{
    int i;
    txt_table_t *keyboard;
    txt_table_t *softact;
    txt_table_t *softact_okcancel;
    txt_table_t *organizer;
    txt_window_action_t *cancel, *caps;

    //Create Widgets
    vkb_window = TXT_NewWindow(NULL);
    vkb_inputbox = inputbox;
    vkb_charset_index = charset_index;
    vkb_label = TXT_NewLabel("");
    keyboard = TXT_NewTable(19);
    organizer = TXT_NewTable(3);
    softact = TXT_NewTable(1);

    //Populate Window
    TXT_AddWidget(vkb_window, vkb_label);
    TXT_AddWidget(vkb_window, TXT_NewSeparator(NULL));
    TXT_AddWidget(vkb_window, organizer);
    TXT_AddWidget(organizer, keyboard);
    TXT_AddWidget(organizer, TXT_NewStrut(1, 0));
    TXT_AddWidget(organizer, softact);

    //Create Actions
    cancel = TXT_NewWindowAction(KEY_BBUTTON, "Revert");
    caps   = TXT_NewWindowAction(KEY_YBUTTON, "Caps");
    TXT_SignalConnect(cancel, "pressed", VKBCloseWindow,   0);
    TXT_SignalConnect(caps,   "pressed", VKBCycleCharsets, 0);
    TXT_AddWidget(softact, TXT_NewButton2("Backspace", VKBBackspace, NULL));
    TXT_AddWidget(softact, TXT_NewButton2("Caps-Lock", VKBCycleCharsets, NULL));
    TXT_AddWidget(softact, TXT_NewButton2("Revert", VKBCloseWindow, 0));
	TXT_AddWidget(softact, TXT_NewButton2("Accept", VKBCloseWindow, 1));

    //Create buttons and populate keyboard table
    for (i=0; vkb_charset[vkb_charset_index][i] != '\0'; i++)
    {
        char button[] = {vkb_charset[vkb_charset_index][i], '\0'};
        TXT_AddWidget(keyboard, TXT_NewButton2(button, VKBAddCharacter, button[0])); //, VKBAddCharacter));

        //Don't add padding on the last of row
        if ((i+1) % 10)
        {
            TXT_AddWidget(keyboard, TXT_NewStrut(1, 0));
        }
    }

    //Format & Update things
    TXT_SetWindowAction(vkb_window, TXT_HORIZ_LEFT,  cancel);
    TXT_SetWindowAction(vkb_window, TXT_HORIZ_RIGHT, caps);
    TXT_SetWidgetAlign(keyboard, TXT_HORIZ_CENTER);
    TXT_SetBGColor(vkb_label, TXT_COLOR_BLACK);
    TXT_LayoutWindow(vkb_window);
    VKBUpdateLabel();
	inputbox->editing = 1;
}

void MainMenu(void)
{
    txt_window_t *window;
    txt_window_action_t *quit_action;
    txt_window_action_t *warp_action;

    window = TXT_NewWindow("Main Menu");

    TXT_SetWindowHelpURL(window, WINDOW_HELP_URL);

    TXT_AddWidgets(window,
          TXT_NewButton2("Configure Display",
                         (TxtWidgetSignalFunc) ConfigDisplay, NULL),
          TXT_NewButton2("Configure Sound",
                         (TxtWidgetSignalFunc) ConfigSound, NULL),
          TXT_NewButton2("Configure Keyboard",
                         (TxtWidgetSignalFunc) ConfigKeyboard, NULL),
          TXT_NewButton2("Configure Mouse",
                         (TxtWidgetSignalFunc) ConfigMouse, NULL),
          TXT_NewButton2("Configure Gamepad/Joystick",
                         (TxtWidgetSignalFunc) ConfigJoystick, NULL),
          NULL);

    // The compatibility window is only appropriate for Doom/Strife.

    if (gamemission == doom || gamemission == strife)
    {
        txt_button_t *button;

        button = TXT_NewButton2("Compatibility", 
                                (TxtWidgetSignalFunc) CompatibilitySettings,
                                NULL);

        TXT_AddWidget(window, button);
    }

    TXT_AddWidgets(window,
          GetLaunchButton(),
          TXT_NewStrut(0, 1),
          TXT_NewButton2("Start a Network Game", 
                         (TxtWidgetSignalFunc) StartMultiGame, NULL),
          TXT_NewButton2("Join a Network Game", 
                         (TxtWidgetSignalFunc) JoinMultiGame, NULL),
          TXT_NewButton2("Multiplayer Configuration", 
                         (TxtWidgetSignalFunc) MultiplayerConfig, NULL),
          NULL);

    quit_action = TXT_NewWindowAction(KEY_ESCAPE, "Quit");
    warp_action = TXT_NewWindowAction(KEY_F2, "Warp");
    TXT_SignalConnect(quit_action, "pressed", QuitConfirm, NULL);
    TXT_SignalConnect(warp_action, "pressed",
                      (TxtWidgetSignalFunc) WarpMenu, NULL);
    TXT_SetWindowAction(window, TXT_HORIZ_LEFT, quit_action);
    TXT_SetWindowAction(window, TXT_HORIZ_CENTER, warp_action);

    TXT_SetKeyListener(window, MainMenuKeyPress, NULL);
}

static void GenerateModesTable(TXT_UNCAST_ARG(widget),
                               TXT_UNCAST_ARG(modes_table))
{
    TXT_CAST_ARG(txt_table_t, modes_table);
    char buf[15];
    screen_mode_t *modes;
    txt_radiobutton_t *rbutton;
    int i;

    // Pick which modes list to use

    if (fullscreen)
    {
        if (screen_modes_fullscreen == NULL)
        {
            BuildFullscreenModesList();
        }

        modes = screen_modes_fullscreen;
    }
    else if (aspect_ratio_correct) 
    {
        modes = screen_modes_scaled;
    }
    else
    {
        modes = screen_modes_unscaled;
    }

    // Build the table
 
    TXT_ClearTable(modes_table);
    TXT_SetColumnWidths(modes_table, 14, 14, 14, 14, 14);

    for (i=0; modes[i].w != 0; ++i) 
    {
        // Skip bad fullscreen modes

        if (fullscreen && !GoodFullscreenMode(&modes[i]))
        {
            continue;
        }

        sprintf(buf, "%ix%i", modes[i].w, modes[i].h);
        rbutton = TXT_NewRadioButton(buf, &vidmode, i);
        TXT_AddWidget(modes_table, rbutton);
        TXT_SignalConnect(rbutton, "selected", ModeSelected, &modes[i]);
    }

    // Find the nearest mode in the list that matches the current
    // settings

    vidmode = FindBestMode(modes);

    if (vidmode > 0)
    {
        screen_width = modes[vidmode].w;
        screen_height = modes[vidmode].h;
    }
}

static void CalibrateJoystick(TXT_UNCAST_ARG(widget), TXT_UNCAST_ARG(unused))
{
    // Try to open all available joysticks.  If none are opened successfully,
    // bomb out with an error.

    if (!OpenAllJoysticks())
    {
        NoJoystick();
        return;
    }

    calibration_window = TXT_NewWindow("Gamepad/Joystick calibration");

    TXT_AddWidgets(calibration_window,
                   TXT_NewStrut(0, 1),
                   TXT_NewLabel("Center the D-pad or joystick,\n"
                                "and press a button."),
                   TXT_NewStrut(0, 1),
                   NULL);

    TXT_SetWindowAction(calibration_window, TXT_HORIZ_LEFT, NULL);
    TXT_SetWindowAction(calibration_window, TXT_HORIZ_CENTER, 
                        TXT_NewWindowAbortAction(calibration_window));
    TXT_SetWindowAction(calibration_window, TXT_HORIZ_RIGHT, NULL);

    TXT_SDL_SetEventCallback(CalibrationEventCallback, NULL);

    TXT_SignalConnect(calibration_window, "closed", CalibrateWindowClosed, NULL);

    // Start calibration

    joystick_index = -1;
}

static void OpenPromptWindow(txt_key_input_t *key_input)
{
    txt_window_t *window;
    txt_label_t *label;

    // Silently update when the shift button is held down.

    key_input->check_conflicts = !TXT_GetModifierState(TXT_MOD_SHIFT);

    window = TXT_NewWindow(NULL);
    TXT_SetWindowAction(window, TXT_HORIZ_LEFT, NULL);
    TXT_SetWindowAction(window, TXT_HORIZ_CENTER, 
                        TXT_NewWindowAbortAction(window));
    TXT_SetWindowAction(window, TXT_HORIZ_RIGHT, NULL);
    
    label = TXT_NewLabel("Press the new key...");

    TXT_AddWidget(window, label);
    TXT_SetWidgetAlign(label, TXT_HORIZ_CENTER);

    TXT_SetKeyListener(window, KeyPressCallback, key_input);

    // Disable key mappings while we prompt for the key press

    TXT_EnableKeyMapping(0);

    // Grab input while reading the key.  On Windows Mobile
    // handheld devices, the hardware keypresses are only
    // detected when input is grabbed.

    SDL_WM_GrabInput(SDL_GRAB_ON);
    TXT_SignalConnect(window, "closed", ReleaseGrab, NULL);
}

static void AdvancedDisplayConfig(TXT_UNCAST_ARG(widget),
                                  TXT_UNCAST_ARG(modes_table))
{
    TXT_CAST_ARG(txt_table_t, modes_table);
    txt_window_t *window;
    txt_checkbox_t *ar_checkbox;

    window = TXT_NewWindow("Advanced display options");

    TXT_SetColumnWidths(window, 35);

    TXT_AddWidgets(window,
                   ar_checkbox = TXT_NewCheckBox("Fix aspect ratio",
                                                 &aspect_ratio_correct),
                   NULL);

    if (gamemission == heretic || gamemission == hexen || gamemission == strife)
    {
        TXT_AddWidget(window,
                      TXT_NewCheckBox("Graphical startup", &graphical_startup));
    }

    if (gamemission == doom || gamemission == heretic || gamemission == strife)
    {
        TXT_AddWidget(window,
                      TXT_NewCheckBox("Show ENDOOM screen on exit",
                                      &show_endoom));
    }

    TXT_SignalConnect(ar_checkbox, "changed", GenerateModesTable, modes_table);
}

static void AdvancedDisplayConfig(TXT_UNCAST_ARG(widget),
                                  TXT_UNCAST_ARG(sizes_table))
{
    TXT_CAST_ARG(txt_table_t, sizes_table);
    txt_window_t *window;
    txt_checkbox_t *ar_checkbox;

    window = TXT_NewWindow("Advanced display options");

    TXT_SetWindowHelpURL(window, WINDOW_HELP_URL);

    TXT_SetColumnWidths(window, 40);

    TXT_AddWidgets(window,
        ar_checkbox = TXT_NewCheckBox("Force correct aspect ratio",
                                      &aspect_ratio_correct),
        TXT_If(gamemission == heretic || gamemission == hexen
            || gamemission == strife,
            TXT_NewCheckBox("Graphical startup", &graphical_startup)),
        TXT_If(gamemission == doom || gamemission == heretic
            || gamemission == strife,
            TXT_NewCheckBox("Show ENDOOM screen on exit",
                            &show_endoom)),
#ifdef HAVE_LIBPNG
        TXT_NewCheckBox("Save screenshots in PNG format",
                        &png_screenshots),
#endif
        NULL);

    TXT_SignalConnect(ar_checkbox, "changed", GenerateSizesTable, sizes_table);
}

void ScrollingMenu(void)
{
    txt_window_t *window;
    txt_button_t *button;
    txt_table_t *table;

    window = TXT_NewWindow("Scrollable menu");

    table = TXT_NewTable(1);

    TXT_AddWidgets(table,
                   TXT_NewButton("Configure display"),
                   TXT_NewButton("Configure joystick"),
                   TXT_NewButton("Configure keyboard"),
                   TXT_NewButton("Configure mouse"),
                   TXT_NewButton("Configure sound"),
                   TXT_NewStrut(0, 1),
                   button = TXT_NewButton("Save Parameters and launch DOOM"),
                   TXT_NewStrut(0, 1),
                   TXT_NewButton("Start a network game"),
                   TXT_NewButton("Join a network game"),
                   TXT_NewButton("Multiplayer configuration"),
                   NULL);

    TXT_SignalConnect(button, "pressed", PwnBox, NULL);

    TXT_AddWidget(window, TXT_NewScrollPane(0, 6, table));
}

static void OpenPromptWindow(txt_joystick_input_t *joystick_input)
{
    txt_window_t *window;
    SDL_Joystick *joystick;

    // Silently update when the shift button is held down.

    joystick_input->check_conflicts = !TXT_GetModifierState(TXT_MOD_SHIFT);

    if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
    {
        return;
    }

    // Check the current joystick is valid

    joystick = SDL_JoystickOpen(joystick_index);

    if (joystick == NULL)
    {
        OpenErrorWindow();
        return;
    }

    // Open the prompt window

    window = TXT_MessageBox(NULL, "Press the new button on the controller...");

    TXT_SDL_SetEventCallback(EventCallback, joystick_input);
    TXT_SignalConnect(window, "closed", PromptWindowClosed, joystick);
    joystick_input->prompt_window = window;

    SDL_JoystickEventState(SDL_ENABLE);
}

void TXT_ConfigureJoystickAxis(txt_joystick_axis_t *joystick_axis,
                               int using_button,
                               txt_joystick_axis_callback_t callback)
{
    // Open the joystick first.
    if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
    {
        return;
    }

    joystick_axis->joystick = SDL_JoystickOpen(joystick_index);
    if (joystick_axis->joystick == NULL)
    {
        TXT_MessageBox(NULL, "Please configure a controller first!");
        return;
    }

    SDL_JoystickEventState(SDL_ENABLE);

    // Build the prompt window.

    joystick_axis->config_window
        = TXT_NewWindow("Gamepad/Joystick calibration");
    TXT_AddWidgets(joystick_axis->config_window,
                   TXT_NewStrut(0, 1),
                   joystick_axis->config_label = TXT_NewLabel(""),
                   TXT_NewStrut(0, 1),
                   NULL);

    TXT_SetWindowAction(joystick_axis->config_window, TXT_HORIZ_LEFT, NULL);
    TXT_SetWindowAction(joystick_axis->config_window, TXT_HORIZ_CENTER,
                        TXT_NewWindowAbortAction(joystick_axis->config_window));
    TXT_SetWindowAction(joystick_axis->config_window, TXT_HORIZ_RIGHT, NULL);
    TXT_SetWidgetAlign(joystick_axis->config_window, TXT_HORIZ_CENTER);

    if (using_button >= 0)
    {
        joystick_axis->config_stage = CONFIG_STAGE1;
        joystick_axis->config_button = using_button;
        IdentifyBadAxes(joystick_axis);
    }
    else
    {
        joystick_axis->config_stage = CONFIG_CENTER;
    }

    SetCalibrationLabel(joystick_axis);

    // Close the joystick and shut down joystick subsystem when the window
    // is closed.
    TXT_SignalConnect(joystick_axis->config_window, "closed",
                      CalibrateWindowClosed, joystick_axis);

    TXT_SDL_SetEventCallback(EventCallback, joystick_axis);

    // When successfully calibrated, invoke this callback:
    joystick_axis->callback = callback;
}

txt_window_action_t *TXT_NewWindowSelectAction(txt_window_t *window)
{
    txt_window_action_t *action;

    action = TXT_NewWindowAction(KEY_RCTRL, "Select");
    TXT_SignalConnect(action, "pressed", WindowSelectCallback, window);

    return action;
}

static txt_window_action_t *WadWindowAction(void)
{
    txt_window_action_t *action;

    action = TXT_NewWindowAction('w', "Add WADs");
    TXT_SignalConnect(action, "pressed", OpenWadsWindow, NULL);

    return action;
}

txt_window_action_t *TestConfigAction(void)
{
    txt_window_action_t *test_action;
    
    test_action = TXT_NewWindowAction('t', "Test");
    TXT_SignalConnect(test_action, "pressed", TestCallback, NULL);

    return test_action;
}

txt_window_action_t *TXT_NewWindowEscapeAction(txt_window_t *window)
{
    txt_window_action_t *action;

    action = TXT_NewWindowAction(KEY_ESCAPE, "Close");
    TXT_SignalConnect(action, "pressed", WindowCloseCallback, window);

    return action;
}