383 lines
12 KiB
C++
383 lines
12 KiB
C++
/****************************************************************************
|
|
* apps/graphics/nxwidgets/src/cscrollingpanel.cxx
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************
|
|
*
|
|
* 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 <debug.h>
|
|
|
|
#include "graphics/nxwidgets/cwidgetcontrol.hxx"
|
|
#include "graphics/nxwidgets/cscrollingpanel.hxx"
|
|
#include "graphics/nxwidgets/cgraphicsport.hxx"
|
|
#include "graphics/nxwidgets/singletons.hxx"
|
|
|
|
/****************************************************************************
|
|
* Pre-Processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Method Implementations
|
|
****************************************************************************/
|
|
|
|
using namespace NXWidgets;
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* @param pWidgetControl The widget control for the display.
|
|
* @param x The x coordinate of the widget.
|
|
* @param y The y coordinate of the widget.
|
|
* @param width The width of the widget.
|
|
* @param height The height of the widget.
|
|
* @param flags The usual widget flags.
|
|
* @param style The style that the widget should use. If this is not
|
|
* specified, the widget will use the values stored in the global
|
|
* g_defaultWidgetStyle object. The widget will copy the properties of
|
|
* the style into its own internal style object.
|
|
*/
|
|
|
|
CScrollingPanel::CScrollingPanel(CWidgetControl *pWidgetControl,
|
|
nxgl_coord_t x, nxgl_coord_t y,
|
|
nxgl_coord_t width, nxgl_coord_t height,
|
|
uint32_t flags, CWidgetStyle* style)
|
|
: CNxWidget(pWidgetControl, x, y, width, height, flags, style)
|
|
{
|
|
m_widgetControl = pWidgetControl;
|
|
|
|
// NOTE: CScrollingPanel is temporarily borderless because there was no
|
|
// easy way to redraw only the required part of the border.
|
|
|
|
m_flags.permeable = true;
|
|
m_flags.borderless = true;
|
|
|
|
CRect rect;
|
|
getClientRect(rect);
|
|
|
|
m_canvasWidth = rect.getWidth();
|
|
m_canvasHeight = rect.getHeight();
|
|
m_canvasX = 0;
|
|
m_canvasY = 0;
|
|
|
|
setAllowsVerticalScroll(true);
|
|
setAllowsHorizontalScroll(true);
|
|
setContentScrolled(true);
|
|
}
|
|
|
|
/**
|
|
* Scroll the panel by the specified amounts.
|
|
*
|
|
* @param dx The horizontal distance to scroll.
|
|
* @param dy The vertical distance to scroll.
|
|
*/
|
|
|
|
void CScrollingPanel::scroll(int32_t dx, int32_t dy)
|
|
{
|
|
CRect rect;
|
|
getClientRect(rect);
|
|
|
|
// Prevent scrolling outside boundaries
|
|
|
|
if (m_canvasX + dx < -(m_canvasWidth - rect.getWidth()))
|
|
{
|
|
dx = -(m_canvasWidth - rect.getWidth()) - m_canvasX;
|
|
}
|
|
else if (m_canvasX + dx > 0)
|
|
{
|
|
dx = -m_canvasX;
|
|
}
|
|
|
|
if (m_canvasY + dy < -(m_canvasHeight - rect.getHeight()))
|
|
{
|
|
dy = -(m_canvasHeight - rect.getHeight()) - m_canvasY;
|
|
}
|
|
else if (m_canvasY + dy > 0)
|
|
{
|
|
dy = -m_canvasY;
|
|
}
|
|
|
|
// Prevent scrolling in disallowed planes
|
|
|
|
if (!allowsVerticalScroll())
|
|
{
|
|
dy = 0;
|
|
}
|
|
|
|
if (!allowsHorizontalScroll())
|
|
{
|
|
dx = 0;
|
|
}
|
|
|
|
// Perform scroll if necessary
|
|
|
|
if ((dx != 0) || (dy != 0))
|
|
{
|
|
// Only scroll if content scrolling is enabled
|
|
|
|
if (m_isContentScrolled)
|
|
{
|
|
// Perform scroll
|
|
|
|
TNxArray<CRect> revealedRects;
|
|
CGraphicsPort *port = m_widgetControl->getGraphicsPort();
|
|
|
|
if (dx >= 0 && dy >= 0)
|
|
{
|
|
port->move(getX(), getY(), dx, dy, rect.getWidth() - dx, rect.getHeight() - dy);
|
|
}
|
|
else if (dx <= 0 && dy >= 0)
|
|
{
|
|
port->move(getX() - dx, getY(), dx, dy, rect.getWidth() + dx, rect.getHeight() - dy);
|
|
}
|
|
else if (dx >= 0 && dy <= 0)
|
|
{
|
|
port->move(getX(), getY() - dy, dx, dy, rect.getWidth() - dx, rect.getHeight() + dy);
|
|
}
|
|
else if (dx <= 0 && dy <= 0)
|
|
{
|
|
port->move(getX() - dx, getY() - dy, dx, dy, rect.getWidth() + dx, rect.getHeight() + dy);
|
|
}
|
|
|
|
if (dx > 0)
|
|
{
|
|
revealedRects.push_back(CRect(getX(), getY(), dx, rect.getHeight()));
|
|
}
|
|
else if (dx < 0)
|
|
{
|
|
revealedRects.push_back(CRect(getX() + rect.getWidth() + dx, getY(), -dx, rect.getHeight()));
|
|
}
|
|
|
|
if (dy > 0)
|
|
{
|
|
revealedRects.push_back(CRect(getX(), getY(), rect.getWidth(), dy));
|
|
}
|
|
else if (dy < 0)
|
|
{
|
|
revealedRects.push_back(CRect(getX(), getY() + rect.getHeight() + dy, rect.getWidth(), -dy));
|
|
}
|
|
|
|
// Adjust the scroll values
|
|
|
|
m_canvasY += dy;
|
|
m_canvasX += dx;
|
|
|
|
// Move children but do not redraw.
|
|
|
|
scrollChildren(dx, dy, false);
|
|
|
|
if (revealedRects.size() > 0)
|
|
{
|
|
// Draw background to revealed sections
|
|
|
|
for (int i = 0; i < revealedRects.size(); ++i)
|
|
{
|
|
CRect &rrect = revealedRects[i];
|
|
rrect.clipToIntersect(rect);
|
|
|
|
ginfo("Redrawing %d,%d,%d,%d after scroll\n",
|
|
rrect.getX(), rrect.getY(),
|
|
rrect.getWidth(), rrect.getHeight());
|
|
|
|
port->drawFilledRect(rrect.getX(), rrect.getY(),
|
|
rrect.getWidth(), rrect.getHeight(),
|
|
getBackgroundColor());
|
|
|
|
// Check if any children intersect this region.
|
|
// If it does, it should be redrawn.
|
|
|
|
for (int j = 0; j < m_children.size(); ++j)
|
|
{
|
|
CRect crect = m_children[j]->getBoundingBox();
|
|
if (crect.intersects(rrect))
|
|
{
|
|
m_children[j]->redraw();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Adjust the scroll values
|
|
|
|
m_canvasY += dy;
|
|
m_canvasX += dx;
|
|
|
|
// Scroll all child widgets and redraw them
|
|
|
|
scrollChildren(dx, dy, true);
|
|
}
|
|
|
|
// Notify event handlers
|
|
|
|
m_widgetEventHandlers->raiseScrollEvent(dx, dy);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Reposition the panel's scrolling region to the specified coordinates.
|
|
*
|
|
* @param x The new x coordinate of the scrolling region.
|
|
* @param y The new y coordinate of the scrolling region.
|
|
*/
|
|
|
|
void CScrollingPanel::jump(int32_t x, int32_t y)
|
|
{
|
|
// Calculate difference between jump value and current value and scroll
|
|
|
|
scroll(x - m_canvasX, y - m_canvasY);
|
|
}
|
|
|
|
/**
|
|
* 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 CScrollingPanel::drawContents(CGraphicsPort *port)
|
|
{
|
|
port->drawFilledRect(getX(), getY(), getWidth(), getHeight(),
|
|
getBackgroundColor());
|
|
}
|
|
|
|
/**
|
|
* 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 CScrollingPanel::drawBorder(CGraphicsPort *port)
|
|
{
|
|
// Stop drawing if the widget indicates it should not have an outline
|
|
|
|
if (!isBorderless())
|
|
{
|
|
port->drawBevelledRect(getX(), getY(), getWidth(), getHeight(),
|
|
getShadowEdgeColor(), getShineEdgeColor());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Scrolls the panel to match the drag.
|
|
*
|
|
* @param x The x coordinate of the mouse.
|
|
* @param y The y coordinate of the mouse.
|
|
* @param vX The horizontal drag distance.
|
|
* @param vY The vertical drag distance.
|
|
*/
|
|
|
|
void CScrollingPanel::onDrag(nxgl_coord_t x, nxgl_coord_t y,
|
|
nxgl_coord_t vX, nxgl_coord_t vY)
|
|
{
|
|
scroll(vX, vY);
|
|
}
|
|
|
|
/**
|
|
* Starts the dragging system.
|
|
*
|
|
* @param x The x coordinate of the click.
|
|
* @param y The y coordinate of the click.
|
|
*/
|
|
|
|
void CScrollingPanel::onClick(nxgl_coord_t x, nxgl_coord_t y)
|
|
{
|
|
startDragging(x, y);
|
|
}
|
|
|
|
/**
|
|
* Scroll all child widgets by the specified amounts. Actually uses
|
|
* the widget's moveTo() function to reposition them.
|
|
*
|
|
* @param dx The horizontal distance to scroll.
|
|
* @param dy The vertical distance to scroll.
|
|
* @param do_redraw Redraw widgets after moving.
|
|
*/
|
|
|
|
void CScrollingPanel::scrollChildren(int32_t dx, int32_t dy, bool do_redraw)
|
|
{
|
|
nxgl_coord_t widgetX = 0;
|
|
nxgl_coord_t widgetY = 0;
|
|
nxgl_coord_t thisX = getX();
|
|
nxgl_coord_t thisY = getY();
|
|
CNxWidget *widget = NULL;
|
|
|
|
for (int32_t i = 0; i < m_children.size(); i++)
|
|
{
|
|
widget = m_children[i];
|
|
bool oldstate = widget->isDrawingEnabled();
|
|
|
|
if (!do_redraw)
|
|
{
|
|
widget->disableDrawing();
|
|
}
|
|
|
|
widgetX = (widget->getX() - thisX) + dx;
|
|
widgetY = (widget->getY() - thisY) + dy;
|
|
widget->moveTo(widgetX, widgetY);
|
|
|
|
if (!do_redraw && oldstate)
|
|
{
|
|
widget->enableDrawing();
|
|
}
|
|
}
|
|
}
|