NanoGUICanvasHeadless.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2020, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#include "gui-precomp.h"  // Precompiled headers

#include <mrpt/gui/internal/NanoGUICanvasHeadless.h>

using namespace mrpt::gui;

#if MRPT_HAS_NANOGUI

using namespace mrpt::gui::internal;

void NanoGUICanvasHeadless::mouseMotionEvent(
    const nanogui::Vector2i& p, const nanogui::Vector2i& rel, int button,
    int modifiers)
{
    const bool leftIsDown = button & (1 << GLFW_MOUSE_BUTTON_LEFT);
    const bool rightIsDown = button & (1 << GLFW_MOUSE_BUTTON_RIGHT);

    const int X = p.x();
    const int Y = p.y();
    updateLastPos(X, Y);

    if (leftIsDown || rightIsDown)
    {
        // Proxy variables to cache the changes:
        CGlCanvasBase::CamaraParams params = cameraParams();

        if (leftIsDown)
        {
            if (modifiers & GLFW_MOD_SHIFT)
                updateZoom(params, X, Y);
            else if (modifiers & GLFW_MOD_CONTROL)
                updateRotate(params, X, Y);
            else
                updateOrbitCamera(params, X, Y);
        }
        else
            updatePan(params, X, Y);

        setMousePos(X, Y);
        setCameraParams(params);

        // Refresh window: done automatically by parent
    }
}

void NanoGUICanvasHeadless::mouseButtonEvent(
    const nanogui::Vector2i& p, int button, bool down, int modifiers)
{
    setMousePos(p.x(), p.y());
    setMouseClicked(down);
}
void NanoGUICanvasHeadless::scrollEvent(
    const nanogui::Vector2i& p, const nanogui::Vector2f& rel)
{
    CamaraParams params = cameraParams();
    updateZoom(params, 125 * rel.y());
    setCameraParams(params);
}

#endif  // MRPT_HAS_NANOGUI