ui/winui/button.cpp

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2023 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 "button.h"

#include "util.h"
#include "container.h"

#include "../common/object.h"
#include "../common/context.h"

using namespace winrt;
using namespace Microsoft::UI::Xaml;
using namespace Microsoft::UI::Xaml::Controls;
using namespace Windows::UI::Xaml::Interop;
using namespace winrt::Windows::Foundation;
using namespace winrt::Microsoft::UI::Xaml::Controls::Primitives;


static void set_button_label(ButtonBase button, const char* label, const char* stockid) {
	if (label) {
		wchar_t* wlabel = str2wstr(label, nullptr);
		button.Content(box_value(wlabel));
		free(wlabel);
	}
	// TODO: stockid
}


UIWIDGET ui_button_create(UiObject* obj, UiButtonArgs args) {
	UiObject* current = uic_current_obj(obj);

	// create button with label
	Button button = Button();
	set_button_label(button, args.label, args.stockid);

	// create toolkit wrapper object and register destructor
	UIElement elm = button;
	UiWidget* widget = new UiWidget(elm);
	ui_context_add_widget_destructor(current->ctx, widget);

	// register callback
	if (args.onclick) {
		widget->obj = obj;
		widget->event_func = (ui_eventfunc)args.onclick;
		widget->event_data = args.onclickdata;
		button.Click([widget](IInspectable const& sender, RoutedEventArgs) {
			ui_callback cb = (ui_callback)widget->event_func;

			UiEvent evt;
			evt.obj = (UiObject*)widget->obj;
			evt.window = evt.obj->window;
			evt.document = evt.obj->ctx->document;
			evt.eventdata = nullptr;
			evt.intval = 0;
			cb(&evt, widget->event_data);
			});
	}

	// add button to current container
	UI_APPLY_LAYOUT1(current, args);

	current->container->Add(button, false);

	return widget;
}

static UIWIDGET create_togglebutton(UiObject *obj, ToggleButton button, UiToggleArgs args) {
	UiObject* current = uic_current_obj(obj);

	// set label
	set_button_label(button, args.label, args.stockid);

	// create toolkit wrapper object and register destructor
	UIElement elm = button;
	UiWidget* widget = new UiWidget(elm);
	ui_context_add_widget_destructor(current->ctx, widget);

	// bind variable
	UiVar* var = nullptr;
	if (args.value) {
		var = uic_create_value_var(current->ctx, args.value);
	}
	else if (args.varname) {
		var = uic_create_var(obj->ctx, args.varname, UI_VAR_INTEGER);
	}
	if (var) {
		UiInteger* value = (UiInteger*)var->value;
		value->obj = widget;
		value->get = ui_toggle_button_get;
		value->set = ui_toggle_button_set;
	}

	// add button to current container
	UI_APPLY_LAYOUT1(current, args);

	current->container->Add(button, false);

	return widget;
}

UIWIDGET ui_togglebutton_create(UiObject* obj, UiToggleArgs args) {
	ToggleButton button = ToggleButton();
	return create_togglebutton(obj, button, args);
}

UIWIDGET ui_checkbox_create(UiObject* obj, UiToggleArgs args) {
	CheckBox button = CheckBox();
	return create_togglebutton(obj, button, args);
}

UIWIDGET ui_radiobutton_create(UiObject* obj, UiToggleArgs) {
	return nullptr;
}


int64_t ui_toggle_button_get(UiInteger* integer) {
	UiWidget* widget = (UiWidget*)integer->obj;
	ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
	int val = toggleButton.IsChecked().GetBoolean();
	integer->value = val;
	return val;
}

void ui_toggle_button_set(UiInteger* integer, int64_t value) {
	UiWidget* widget = (UiWidget*)integer->obj;
	ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
	toggleButton.IsChecked((bool)value);
	integer->value = value;
}