src/ui/image_button.cpp - main - Mr.Stalin/FreeFT

src/ui/image_button.cpp
101 строка3 KB
Krzysztof Jakubowski
Fixed rendering issues after switching to new libfwk
12 янв 2025, 00:23
12 янв 2025, 00:23e38088d
// Copyright (C) Krzysztof Jakubowski <nadult@fastmail.fm>
// This file is part of FreeFT. See license.txt for details.

#include "ui/image_button.h"

#include "audio/device.h"
#include "gfx/drawing.h"
#include <fwk/vulkan/vulkan_image.h>

namespace ui {
ImageButtonProto::ImageButtonProto(Str back_tex, Str up_tex, Str down_tex, Str font_name,
								   FRect text_area) {
	DASSERT(up_tex && down_tex);

	if(back_tex)
		back = res::getGuiTexture(back_tex);

	up = res::getGuiTexture(up_tex);
	down = res::getGuiTexture(down_tex);
	if(font_name)
		font = &res::getFont(font_name);

	rect = IRect({0, 0}, back ? back->size2D() : vmax(up->size2D(), down->size2D()));
	text_rect = text_area.empty() ? IRect() :
									IRect(lerp(float(rect.x()), float(rect.ex()), text_area.x()),
										  lerp(float(rect.y()), float(rect.ey()), text_area.y()),
										  lerp(float(rect.x()), float(rect.ex()), text_area.ex()),
										  lerp(float(rect.y()), float(rect.ey()), text_area.ey()));
}

ImageButton::ImageButton(const int2 &pos, ImageButtonProto proto, Str text, Mode mode, int id)
	: Window(IRect(pos, pos + proto.rect.size()), ColorId::transparent), m_proto(std::move(proto)),
	  m_id(id), m_mode(mode) {
	setBackground(m_proto.back);
	setText(text);

	m_is_enabled = true;
	m_is_pressed = false;
	m_mouse_press = false;
}

void ImageButton::setText(Str text) {
	if(m_proto.font) {
		DASSERT(text);

		m_text = text;
		auto ex = m_proto.font->evalExtents(text);
		m_text_extents = {ex.x(), 0, ex.ex(), m_proto.font->lineHeight()};
	}
}

void ImageButton::drawContents(Canvas2D &out) const {
	bool is_pressed = m_mode == mode_toggle	   ? m_is_pressed ^ m_mouse_press :
					  m_mode == mode_toggle_on ? m_is_pressed || m_mouse_press :
												 m_mouse_press;

	auto image = is_pressed ? m_proto.down : m_proto.up;
	out.setMaterial({image, ColorId::white, SimpleBlendingMode::normal});
	out.addFilledRect(IRect(image->size2D()));
	out.setMaterial({});

	if(m_proto.font) {
		int2 rect_center = size() / 2;
		int2 pos(m_proto.text_rect.x() - 1,
				 m_proto.text_rect.center().y - m_text_extents.height() / 2 - 1);

		if(m_mouse_press)
			pos += int2(2, 2);
		m_proto.font->draw(out, (float2)pos,
						   {m_is_enabled ? Color(255, 200, 0) : ColorId::gray, ColorId::black},
						   m_text);
	}
}

bool ImageButton::onMouseDrag(const InputState &, int2 start, int2 current, int key, int is_final) {
	if(key == 0 && !m_mouse_press && !m_proto.sound_name.empty() &&
	   !(m_mode == mode_toggle_on && m_is_pressed))
		audio::playSound(m_proto.sound_name.c_str(), 1.0f);
	m_mouse_press = key == 0 && !is_final && m_is_enabled;

	if(key == 0 && m_is_enabled) {
		if(is_final == 1 && localRect().containsCell(current)) {
			if(m_mode == mode_toggle)
				m_is_pressed ^= 1;
			else if(m_mode == mode_toggle_on)
				m_is_pressed = true;
			sendEvent(this, Event::button_clicked, m_id);
		}
		return true;
	}

	return false;
}

void ImageButton::enable(bool do_enable) {
	if(m_is_enabled && !do_enable)
		m_mouse_press = false;
	m_is_enabled = do_enable;
}

}