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px4-firmware/NxWidgets/libnxwidgets/src/csliderverticalgrip.cxx

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/****************************************************************************
* NxWidgets/libnxwidgets/src/cslidervertical.cxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
* me be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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 OWNER 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.
*
****************************************************************************
*
* Portions of this package derive from Woopsi (http://woopsi.org/) and
* portions are original efforts. It is difficult to determine at this
* point what parts are original efforts and which parts derive from Woopsi.
* However, in any event, the work of Antony Dzeryn will be acknowledged
* in most NxWidget files. Thanks Antony!
*
* Copyright (c) 2007-2011, Antony Dzeryn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the names "Woopsi", "Simian Zombie" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``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 Antony Dzeryn 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include "nxconfig.hxx"
#include "cwidgetcontrol.hxx"
#include "csliderverticalgrip.hxx"
#include "cgraphicsport.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Method Implementations
****************************************************************************/
using namespace NXWidgets;
/**
* Constructor.
*
* @param pWidgetControl The controlling widget for the display
* @param x The x coordinate of the grip, relative to its parent.
* @param y The y coordinate of the grip, relative to its parent.
* @param width The width of the grip.
* @param height The height of the grip.
*/
CSliderVerticalGrip::CSliderVerticalGrip(CWidgetControl *pWidgetControl,
nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t width, nxgl_coord_t height)
: CNxWidget(pWidgetControl, x, y, width, height, WIDGET_DRAGGABLE)
{
}
/**
* Draw the area of this widget that falls within the clipping region.
* Called by the redraw() function to draw all visible regions.
*
* @param port The CGraphicsPort to draw to.
* @see redraw()
*/
void CSliderVerticalGrip::drawContents(CGraphicsPort *port)
{
CRect rect;
getRect(rect);
nxwidget_pixel_t color;
if (!m_flags.clicked)
{
color = getSelectedBackgroundColor();
}
else
{
color = getHighlightColor();
}
port->drawFilledRect(rect.getX(), rect.getY(),
rect.getWidth(), rect.getHeight(),
color);
}
/**
* Draw the area of this widget that falls within the clipping region.
* Called by the redraw() function to draw all visible regions.
*
* @param port The CGraphicsPort to draw to.
* @see redraw()
*/
void CSliderVerticalGrip::drawBorder(CGraphicsPort *port)
{
// Stop drawing if the widget indicates it should not have an outline
if (!isBorderless())
{
if (isClicked())
{
port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(),
getShadowEdgeColor(), getShineEdgeColor());
}
else
{
port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(),
getShineEdgeColor(), getShadowEdgeColor());
}
}
}
/**
* Starts dragging the grip and redraws it.
*
* @param x The x coordinate of the click.
* @param y The y coordinate of the click.
*/
void CSliderVerticalGrip::onClick(nxgl_coord_t x, nxgl_coord_t y)
{
startDragging(x, y);
redraw();
}
/**
* Redraws the grip.
*
* @param x The x coordinate of the mouse.
* @param y The y coordinate of the mouse.
*/
void CSliderVerticalGrip::onRelease(nxgl_coord_t x, nxgl_coord_t y)
{
redraw();
}
/**
* Redraws the grip.
*
* @param x The x coordinate of the mouse.
* @param y The y coordinate of the mouse.
*/
void CSliderVerticalGrip::onReleaseOutside(nxgl_coord_t x, nxgl_coord_t y)
{
redraw();
}
/**
* Moves the grip to follow the mouse.
*
* @param x The x coordinate of the mouse.
* @param y The y coordinate of the mouse.
* @param vX The horizontal distance of the drag.
* @param vY The vertical distance of the drag.
*/
void CSliderVerticalGrip::onDrag(nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t vX, nxgl_coord_t vY)
{
// Work out where we're moving to
nxgl_coord_t destY = y - m_grabPointY - m_parent->getY();
// Do we need to move?
if (destY != m_rect.getY())
{
// Get parent rect
CRect rect;
m_parent->getClientRect(rect);
// Prevent grip from moving outside parent
if (destY < rect.getY())
{
destY = rect.getY();
}
else
{
if (destY + getHeight() > rect.getHeight() + rect.getY())
{
destY = (rect.getHeight() + rect.getY()) - getHeight();
}
}
// Move to new location
moveTo(rect.getX(), destY);
}
}
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