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o3de/Gems/GradientSignal/Code/Source/UI/GradientPreviewWidget.cpp

57 lines
1.5 KiB
C++

/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
#include "GradientSignal_precompiled.h"
#include <UI/GradientPreviewWidget.h>
#include <QPainter>
namespace GradientSignal
{
GradientPreviewWidget::GradientPreviewWidget(QWidget* parent)
: QWidget(parent)
{
setMinimumSize(256, 256);
setAttribute(Qt::WA_OpaquePaintEvent); // We're responsible for painting everything, don't bother erasing before paint
}
GradientPreviewWidget::~GradientPreviewWidget()
{
}
void GradientPreviewWidget::OnUpdate()
{
update();
}
QSize GradientPreviewWidget::GetPreviewSize() const
{
return size();
}
void GradientPreviewWidget::paintEvent([[maybe_unused]] QPaintEvent* paintEvent)
{
QPainter painter(this);
if (!m_previewImage.isNull())
{
painter.drawImage(QPoint(0, 0), m_previewImage);
}
}
void GradientPreviewWidget::resizeEvent(QResizeEvent* resizeEvent)
{
QWidget::resizeEvent(resizeEvent);
QueueUpdate();
}
} //namespace GradientSignal