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/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "GUIMoverControl.h"
#include "GUIWindowManager.h"
#include "Key.h"
#include "utils/TimeUtils.h"
// time to reset accelerated cursors (digital movement)
#define MOVE_TIME_OUT 500L
CGUIMoverControl::CGUIMoverControl(int parentID, int controlID, float posX, float posY, float width, float height, const CTextureInfo& textureFocus, const CTextureInfo& textureNoFocus)
: CGUIControl(parentID, controlID, posX, posY, width, height)
, m_imgFocus(posX, posY, width, height, textureFocus)
, m_imgNoFocus(posX, posY, width, height, textureNoFocus)
{
m_frameCounter = 0;
m_lastMoveTime = 0;
m_fSpeed = 1.0;
m_fAnalogSpeed = 2.0f; // TODO: implement correct analog speed
m_fAcceleration = 0.2f; // TODO: implement correct computation of acceleration
m_fMaxSpeed = 10.0; // TODO: implement correct computation of maxspeed
ControlType = GUICONTROL_MOVER;
SetLimits(0, 0, 720, 576); // defaults
SetLocation(0, 0, false); // defaults
}
CGUIMoverControl::~CGUIMoverControl(void)
{}
void CGUIMoverControl::Render()
{
if (m_bInvalidated)
{
m_imgFocus.SetWidth(m_width);
m_imgFocus.SetHeight(m_height);
m_imgNoFocus.SetWidth(m_width);
m_imgNoFocus.SetHeight(m_height);
}
if (HasFocus())
{
unsigned int alphaCounter = m_frameCounter + 2;
unsigned int alphaChannel;
if ((alphaCounter % 128) >= 64)
alphaChannel = alphaCounter % 64;
else
alphaChannel = 63 - (alphaCounter % 64);
alphaChannel += 192;
SetAlpha( (unsigned char)alphaChannel );
m_imgFocus.SetVisible(true);
m_imgNoFocus.SetVisible(false);
m_frameCounter++;
}
else
{
SetAlpha(0xff);
m_imgFocus.SetVisible(false);
m_imgNoFocus.SetVisible(true);
}
// render both so the visibility settings cause the frame counter to resetcorrectly
m_imgFocus.Render();
m_imgNoFocus.Render();
CGUIControl::Render();
}
bool CGUIMoverControl::OnAction(const CAction &action)
{
if (action.id == ACTION_SELECT_ITEM)
{
// button selected - send message to parent
CGUIMessage message(GUI_MSG_CLICKED, GetID(), GetParentID());
SendWindowMessage(message);
return true;
}
if (action.id == ACTION_ANALOG_MOVE)
{
// if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_UPDOWN)
// Move(0, (int)(-m_fAnalogSpeed*action.amount2));
// else if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_LEFTRIGHT)
// Move((int)(m_fAnalogSpeed*action.amount1), 0);
// else // ALLOWED_DIRECTIONS_ALL
Move((int)(m_fAnalogSpeed*action.amount1), (int)( -m_fAnalogSpeed*action.amount2));
return true;
}
// base class
return CGUIControl::OnAction(action);
}
void CGUIMoverControl::OnUp()
{
// if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_LEFTRIGHT) return;
UpdateSpeed(DIRECTION_UP);
Move(0, (int) - m_fSpeed);
}
void CGUIMoverControl::OnDown()
{
// if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_LEFTRIGHT) return;
UpdateSpeed(DIRECTION_DOWN);
Move(0, (int)m_fSpeed);
}
void CGUIMoverControl::OnLeft()
{
// if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_UPDOWN) return;
UpdateSpeed(DIRECTION_LEFT);
Move((int) - m_fSpeed, 0);
}
void CGUIMoverControl::OnRight()
{
// if (m_dwAllowedDirections == ALLOWED_DIRECTIONS_UPDOWN) return;
UpdateSpeed(DIRECTION_RIGHT);
Move((int)m_fSpeed, 0);
}
bool CGUIMoverControl::OnMouseEvent(const CPoint &point, const CMouseEvent &event)
{
if (event.m_id == ACTION_MOUSE_DRAG)
{
if (event.m_state == 1)
{ // grab exclusive access
CGUIMessage msg(GUI_MSG_EXCLUSIVE_MOUSE, GetID(), GetParentID());
SendWindowMessage(msg);
}
else if (event.m_state == 3)
{ // release exclusive access
CGUIMessage msg(GUI_MSG_EXCLUSIVE_MOUSE, 0, GetParentID());
SendWindowMessage(msg);
}
Move((int)event.m_offsetX, (int)event.m_offsetY);
return true;
}
return false;
}
void CGUIMoverControl::UpdateSpeed(int nDirection)
{
if (CTimeUtils::GetFrameTime() - m_lastMoveTime > MOVE_TIME_OUT)
{
m_fSpeed = 1;
m_nDirection = DIRECTION_NONE;
}
m_lastMoveTime = CTimeUtils::GetFrameTime();
if (nDirection == m_nDirection)
{ // accelerate
m_fSpeed += m_fAcceleration;
if (m_fSpeed > m_fMaxSpeed) m_fSpeed = m_fMaxSpeed;
}
else
{ // reset direction and speed
m_fSpeed = 1;
m_nDirection = nDirection;
}
}
void CGUIMoverControl::AllocResources()
{
CGUIControl::AllocResources();
m_frameCounter = 0;
m_imgFocus.AllocResources();
m_imgNoFocus.AllocResources();
float width = m_width ? m_width : m_imgFocus.GetWidth();
float height = m_height ? m_height : m_imgFocus.GetHeight();
SetWidth(width);
SetHeight(height);
}
void CGUIMoverControl::FreeResources()
{
CGUIControl::FreeResources();
m_imgFocus.FreeResources();
m_imgNoFocus.FreeResources();
}
void CGUIMoverControl::DynamicResourceAlloc(bool bOnOff)
{
CGUIControl::DynamicResourceAlloc(bOnOff);
m_imgFocus.DynamicResourceAlloc(bOnOff);
m_imgNoFocus.DynamicResourceAlloc(bOnOff);
}
void CGUIMoverControl::SetInvalid()
{
CGUIControl::SetInvalid();
m_imgFocus.SetInvalid();
m_imgNoFocus.SetInvalid();
}
void CGUIMoverControl::Move(int iX, int iY)
{
int iLocX = m_iLocationX + iX;
int iLocY = m_iLocationY + iY;
// check if we are within the bounds
if (iLocX < m_iX1) iLocX = m_iX1;
if (iLocY < m_iY1) iLocY = m_iY1;
if (iLocX > m_iX2) iLocX = m_iX2;
if (iLocY > m_iY2) iLocY = m_iY2;
// ok, now set the location of the mover
SetLocation(iLocX, iLocY);
}
void CGUIMoverControl::SetLocation(int iLocX, int iLocY, bool bSetPosition)
{
if (bSetPosition) SetPosition(GetXPosition() + iLocX - m_iLocationX, GetYPosition() + iLocY - m_iLocationY);
m_iLocationX = iLocX;
m_iLocationY = iLocY;
}
void CGUIMoverControl::SetPosition(float posX, float posY)
{
CGUIControl::SetPosition(posX, posY);
m_imgFocus.SetPosition(posX, posY);
m_imgNoFocus.SetPosition(posX, posY);
}
void CGUIMoverControl::SetAlpha(unsigned char alpha)
{
m_imgFocus.SetAlpha(alpha);
m_imgNoFocus.SetAlpha(alpha);
}
void CGUIMoverControl::UpdateColors()
{
CGUIControl::UpdateColors();
m_imgFocus.SetDiffuseColor(m_diffuseColor);
m_imgNoFocus.SetDiffuseColor(m_diffuseColor);
}
void CGUIMoverControl::SetLimits(int iX1, int iY1, int iX2, int iY2)
{
m_iX1 = iX1;
m_iY1 = iY1;
m_iX2 = iX2;
m_iY2 = iY2;
}
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