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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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 <LibGfx/CharacterBitmap.h>
#include <LibGfx/Painter.h>
#include <LibGfx/StylePainter.h>
#include <WindowServer/Button.h>
#include <WindowServer/Event.h>
#include <WindowServer/WindowManager.h>
namespace WindowServer {
Button::Button(WindowFrame& frame, NonnullRefPtr<Gfx::CharacterBitmap>&& bitmap, Function<void(Button&)>&& on_click_handler)
: on_click(move(on_click_handler))
, m_frame(frame)
, m_bitmap(move(bitmap))
{
}
Button::~Button()
{
}
void Button::paint(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
Gfx::PainterStateSaver saver(painter);
painter.translate(relative_rect().location());
Gfx::StylePainter::paint_button(painter, rect(), palette, Gfx::ButtonStyle::Normal, m_pressed, m_hovered);
auto x_location = rect().center();
x_location.move_by(-(m_bitmap->width() / 2), -(m_bitmap->height() / 2));
if (m_pressed)
x_location.move_by(1, 1);
painter.draw_bitmap(x_location, *m_bitmap, palette.button_text());
}
void Button::on_mouse_event(const MouseEvent& event)
{
auto& wm = WindowManager::the();
if (event.type() == Event::MouseDown && event.button() == MouseButton::Left) {
m_pressed = true;
wm.set_cursor_tracking_button(this);
wm.invalidate(screen_rect());
return;
}
if (event.type() == Event::MouseUp && event.button() == MouseButton::Left) {
if (wm.cursor_tracking_button() != this)
return;
wm.set_cursor_tracking_button(nullptr);
bool old_pressed = m_pressed;
m_pressed = false;
if (rect().contains(event.position())) {
if (on_click)
on_click(*this);
}
if (old_pressed != m_pressed) {
// Would like to compute:
// m_hovered = rect_after_action().contains(event.position());
// However, we don't know that rect yet. We can make an educated
// guess which also looks okay even when wrong:
m_hovered = false;
wm.invalidate(screen_rect());
}
return;
}
if (event.type() == Event::MouseMove) {
bool old_hovered = m_hovered;
m_hovered = rect().contains(event.position());
wm.set_hovered_button(m_hovered ? this : nullptr);
if (old_hovered != m_hovered)
wm.invalidate(screen_rect());
}
if (event.type() == Event::MouseMove && event.buttons() & (unsigned)MouseButton::Left) {
if (wm.cursor_tracking_button() != this)
return;
bool old_pressed = m_pressed;
m_pressed = m_hovered;
if (old_pressed != m_pressed)
wm.invalidate(screen_rect());
}
}
Gfx::Rect Button::screen_rect() const
{
return m_relative_rect.translated(m_frame.rect().location());
}
}
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