qrhiimgui_p.h 2.96 KB
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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt RHI module
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QRHIIMGUI_P_H
#define QRHIIMGUI_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qrhiimgui.h"

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#include "imgui.h"

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QT_BEGIN_NAMESPACE

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#define FIRSTSPECKEY (0x01000000)
#define LASTSPECKEY (0x01000017)
#define MAPSPECKEY(k) ((k) - FIRSTSPECKEY + 256)

class QRhiImGuiInputEventFilter : public QObject
{
public:
    QRhiImGuiInputEventFilter()
    {
        memset(keyDown, 0, sizeof(keyDown));
    }

    bool eventFilter(QObject *watched, QEvent *event) override;

    QPointF mousePos;
    Qt::MouseButtons mouseButtonsDown = Qt::NoButton;
    float mouseWheel = 0;
    Qt::KeyboardModifiers modifiers = Qt::NoModifier;
    bool keyDown[256 + (LASTSPECKEY - FIRSTSPECKEY + 1)];
    QString keyText;
};

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class QRhiImguiPrivate
{
public:
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    QRhiImguiPrivate();
    ~QRhiImguiPrivate();
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    void updateInput();

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    QRhiImgui::FrameFunc frame = nullptr;
    bool showDemoWindow = true;
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    QRhi *rhi = nullptr;

    struct Texture {
        QImage image;
        QRhiTexture *tex = nullptr;
        QRhiShaderResourceBindings *srb = nullptr;
    };
    QVector<Texture> textures;

    QRhiBuffer *vbuf = nullptr;
    QRhiBuffer *ibuf = nullptr;
    QRhiBuffer *ubuf = nullptr;
    QRhiGraphicsPipeline *ps = nullptr;
    QRhiSampler *sampler = nullptr;
    QVector<QRhiResource *> releasePool;
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    QSizeF lastOutputSize;
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    QRhiImGuiInputEventFilter *inputEventFilter = nullptr;
    QObject *inputEventSource = nullptr;
    bool inputInitialized = false;
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};

QT_END_NAMESPACE

#endif