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LibWeb: Add basic support for <input type=checkbox>

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This is implemented entirely inside LibWeb, there is no GUI::CheckBox
widget instantiated, unlike other input types. All input types should
be moved to this new style of implementation.
This commit is contained in:
Andreas Kling 2020-09-11 18:17:39 +02:00
parent d6889ecf35
commit f2431adf47
7 changed files with 195 additions and 1 deletions
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105
Libraries/LibWeb/Layout/LayoutCheckBox.cpp Normal file
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/*
* Copyright (c) 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 <LibGUI/Event.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Font.h>
#include <LibGfx/StylePainter.h>
#include <LibWeb/Layout/LayoutCheckBox.h>
#include <LibWeb/Page/Frame.h>
namespace Web {
LayoutCheckBox::LayoutCheckBox(DOM::Document& document, HTML::HTMLInputElement& element, NonnullRefPtr<CSS::StyleProperties> style)
: LayoutReplaced(document, element, move(style))
{
}
LayoutCheckBox::~LayoutCheckBox()
{
}
void LayoutCheckBox::layout(LayoutMode layout_mode)
{
set_has_intrinsic_width(true);
set_has_intrinsic_height(true);
set_intrinsic_width(13);
set_intrinsic_height(13);
LayoutReplaced::layout(layout_mode);
}
void LayoutCheckBox::paint(PaintContext& context, PaintPhase phase)
{
if (!is_visible())
return;
LayoutReplaced::paint(context, phase);
if (phase == PaintPhase::Foreground) {
Gfx::StylePainter::paint_check_box(context.painter(), enclosing_int_rect(absolute_rect()), context.palette(), node().enabled(), node().checked(), m_being_pressed);
}
}
void LayoutCheckBox::handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned)
{
if (button != GUI::MouseButton::Left)
return;
m_being_pressed = true;
set_needs_display();
m_tracking_mouse = true;
frame().event_handler().set_mouse_event_tracking_layout_node(this);
}
void LayoutCheckBox::handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
if (!m_tracking_mouse || button != GUI::MouseButton::Left)
return;
bool is_inside = enclosing_int_rect(absolute_rect()).contains(position);
if (is_inside)
node().set_checked(!node().checked());
m_being_pressed = false;
m_tracking_mouse = false;
frame().event_handler().set_mouse_event_tracking_layout_node(nullptr);
}
void LayoutCheckBox::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned, unsigned)
{
if (!m_tracking_mouse)
return;
bool is_inside = enclosing_int_rect(absolute_rect()).contains(position);
if (m_being_pressed == is_inside)
return;
m_being_pressed = is_inside;
set_needs_display();
}
}