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kicad/common/tool/tool_dispatcher.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* 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
* of the License, 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 this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <wxPcbStruct.h>
#include <wxBasePcbFrame.h>
#include <tool/tool_manager.h>
#include <tool/tool_dispatcher.h>
#include <tools/common_actions.h>
#include <view/view.h>
#include <view/wx_view_controls.h>
#include <class_draw_panel_gal.h>
#include <pcbnew_id.h>
#include <boost/optional.hpp>
#include <boost/foreach.hpp>
///> Stores information about a mouse button state
struct TOOL_DISPATCHER::BUTTON_STATE
{
BUTTON_STATE( TOOL_MOUSE_BUTTONS aButton, const wxEventType& aDownEvent,
const wxEventType& aUpEvent, const wxEventType& aDblClickEvent ) :
dragging( false ),
pressed( false ),
dragMaxDelta( 0.0f ),
button( aButton ),
downEvent( aDownEvent ),
upEvent( aUpEvent ),
dblClickEvent( aDblClickEvent )
{};
///> Flag indicating that dragging is active for the given button.
bool dragging;
///> Flag indicating that the given button is pressed.
bool pressed;
///> Point where dragging has started (in world coordinates).
VECTOR2D dragOrigin;
///> Point where click event has occurred.
VECTOR2D downPosition;
///> Difference between drag origin point and current mouse position (expressed as distance in
///> pixels).
double dragMaxDelta;
///> Determines the mouse button for which information are stored.
TOOL_MOUSE_BUTTONS button;
///> The type of wxEvent that determines mouse button press.
wxEventType downEvent;
///> The type of wxEvent that determines mouse button release.
wxEventType upEvent;
///> The type of wxEvent that determines mouse button double click.
wxEventType dblClickEvent;
///> Time stamp for the last mouse button press event.
wxLongLong downTimestamp;
///> Restores initial state.
void Reset()
{
dragging = false;
pressed = false;
}
///> Checks the current state of the button.
bool GetState() const
{
wxMouseState mouseState = wxGetMouseState();
switch( button )
{
case BUT_LEFT:
return mouseState.LeftIsDown();
case BUT_MIDDLE:
return mouseState.MiddleIsDown();
case BUT_RIGHT:
return mouseState.RightIsDown();
default:
assert( false );
break;
}
return false;
}
};
TOOL_DISPATCHER::TOOL_DISPATCHER( TOOL_MANAGER* aToolMgr ) :
m_toolMgr( aToolMgr )
{
m_buttons.push_back( new BUTTON_STATE( BUT_LEFT, wxEVT_LEFT_DOWN,
wxEVT_LEFT_UP, wxEVT_LEFT_DCLICK ) );
m_buttons.push_back( new BUTTON_STATE( BUT_RIGHT, wxEVT_RIGHT_DOWN,
wxEVT_RIGHT_UP, wxEVT_RIGHT_DCLICK ) );
m_buttons.push_back( new BUTTON_STATE( BUT_MIDDLE, wxEVT_MIDDLE_DOWN,
wxEVT_MIDDLE_UP, wxEVT_MIDDLE_DCLICK ) );
ResetState();
}
TOOL_DISPATCHER::~TOOL_DISPATCHER()
{
BOOST_FOREACH( BUTTON_STATE* st, m_buttons )
delete st;
}
void TOOL_DISPATCHER::ResetState()
{
BOOST_FOREACH( BUTTON_STATE* st, m_buttons )
st->Reset();
}
KIGFX::VIEW* TOOL_DISPATCHER::getView()
{
return static_cast<EDA_DRAW_FRAME*>( m_toolMgr->GetEditFrame() )->GetGalCanvas()->GetView();
}
bool TOOL_DISPATCHER::handleMouseButton( wxEvent& aEvent, int aIndex, bool aMotion )
{
BUTTON_STATE* st = m_buttons[aIndex];
wxEventType type = aEvent.GetEventType();
boost::optional<TOOL_EVENT> evt;
bool isClick = false;
// bool up = type == st->upEvent;
// bool down = type == st->downEvent;
bool up = false, down = false;
bool dblClick = type == st->dblClickEvent;
bool state = st->GetState();
if( !dblClick )
{
// Sometimes the dispatcher does not receive mouse button up event, so it stays
// in the dragging mode even if the mouse button is not held anymore
if( st->pressed && !state )
up = true;
else if( !st->pressed && state )
down = true;
}
int mods = decodeModifiers( static_cast<wxMouseEvent*>( &aEvent ) );
int args = st->button | mods;
if( down ) // Handle mouse button press
{
st->downTimestamp = wxGetLocalTimeMillis();
st->dragOrigin = m_lastMousePos;
st->downPosition = m_lastMousePos;
st->dragMaxDelta = 0;
st->pressed = true;
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_DOWN, args );
}
else if( up ) // Handle mouse button release
{
st->pressed = false;
if( st->dragging )
{
wxLongLong t = wxGetLocalTimeMillis();
// Determine if it was just a single click or beginning of dragging
if( t - st->downTimestamp < DragTimeThreshold &&
st->dragMaxDelta < DragDistanceThreshold )
isClick = true;
else
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_UP, args );
}
else
isClick = true;
if( isClick )
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_CLICK, args );
st->dragging = false;
}
else if( dblClick )
{
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_DBLCLICK, args );
}
if( st->pressed && aMotion )
{
st->dragging = true;
double dragPixelDistance =
getView()->ToScreen( m_lastMousePos - st->dragOrigin, false ).EuclideanNorm();
st->dragMaxDelta = std::max( st->dragMaxDelta, dragPixelDistance );
wxLongLong t = wxGetLocalTimeMillis();
if( t - st->downTimestamp > DragTimeThreshold || st->dragMaxDelta > DragDistanceThreshold )
{
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_DRAG, args );
evt->setMouseDragOrigin( st->dragOrigin );
evt->setMouseDelta( m_lastMousePos - st->dragOrigin );
}
}
if( evt )
{
evt->SetMousePosition( isClick ? st->downPosition : m_lastMousePos );
m_toolMgr->ProcessEvent( *evt );
return true;
}
return false;
}
void TOOL_DISPATCHER::DispatchWxEvent( wxEvent& aEvent )
{
bool motion = false, buttonEvents = false;
boost::optional<TOOL_EVENT> evt;
int type = aEvent.GetEventType();
// Mouse handling
if( type == wxEVT_MOTION || type == wxEVT_MOUSEWHEEL ||
#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
type == wxEVT_MAGNIFY ||
#endif
type == wxEVT_LEFT_DOWN || type == wxEVT_LEFT_UP ||
type == wxEVT_MIDDLE_DOWN || type == wxEVT_MIDDLE_UP ||
type == wxEVT_RIGHT_DOWN || type == wxEVT_RIGHT_UP ||
type == wxEVT_LEFT_DCLICK || type == wxEVT_MIDDLE_DCLICK || type == wxEVT_RIGHT_DCLICK ||
// Event issued whem mouse retains position in screen coordinates,
// but changes in world coordinates (e.g. autopanning)
type == KIGFX::WX_VIEW_CONTROLS::EVT_REFRESH_MOUSE )
{
wxMouseEvent* me = static_cast<wxMouseEvent*>( &aEvent );
int mods = decodeModifiers( me );
VECTOR2D screenPos = m_toolMgr->GetViewControls()->GetMousePosition();
VECTOR2D pos = getView()->ToWorld( screenPos );
if( pos != m_lastMousePos )
{
motion = true;
m_lastMousePos = pos;
}
for( unsigned int i = 0; i < m_buttons.size(); i++ )
buttonEvents |= handleMouseButton( aEvent, i, motion );
if( !buttonEvents && motion )
{
evt = TOOL_EVENT( TC_MOUSE, TA_MOUSE_MOTION, mods );
evt->SetMousePosition( pos );
}
#ifdef __APPLE__
// TODO That's a big ugly workaround, somehow DRAWPANEL_GAL loses focus
// after second LMB click and currently I have no means to do better debugging
if( type == wxEVT_LEFT_UP )
static_cast<PCB_BASE_FRAME*>( m_toolMgr->GetEditFrame() )->GetGalCanvas()->SetFocus();
#endif /* __APPLE__ */
}
// Keyboard handling
else if( type == wxEVT_CHAR )
{
wxKeyEvent* ke = static_cast<wxKeyEvent*>( &aEvent );
int key = ke->GetKeyCode();
int mods = decodeModifiers( ke );
if( mods & MD_CTRL )
{
#if !wxCHECK_VERSION( 2, 9, 0 )
// I really look forward to the day when we will use only one version of wxWidgets..
const int WXK_CONTROL_A = 1;
const int WXK_CONTROL_Z = 26;
#endif
// wxWidgets have a quirk related to Ctrl+letter hot keys handled by CHAR_EVT
// http://docs.wxwidgets.org/trunk/classwx_key_event.html:
// "char events for ASCII letters in this case carry codes corresponding to the ASCII
// value of Ctrl-Latter, i.e. 1 for Ctrl-A, 2 for Ctrl-B and so on until 26 for Ctrl-Z."
if( key >= WXK_CONTROL_A && key <= WXK_CONTROL_Z )
key += 'A' - 1;
}
if( key == WXK_ESCAPE ) // ESC is the special key for cancelling tools
evt = TOOL_EVENT( TC_COMMAND, TA_CANCEL_TOOL );
else
evt = TOOL_EVENT( TC_KEYBOARD, TA_KEY_PRESSED, key | mods );
}
if( evt )
m_toolMgr->ProcessEvent( *evt );
// pass the event to the GUI, it might still be interested in it
aEvent.Skip();
updateUI();
}
void TOOL_DISPATCHER::DispatchWxCommand( wxCommandEvent& aEvent )
{
boost::optional<TOOL_EVENT> evt = COMMON_ACTIONS::TranslateLegacyId( aEvent.GetId() );
if( evt )
m_toolMgr->ProcessEvent( *evt );
else
aEvent.Skip();
updateUI();
}
void TOOL_DISPATCHER::updateUI()
{
// TODO I don't feel it is the right place for updating UI,
// but at the moment I cannot think of a better one..
EDA_DRAW_FRAME* frame = static_cast<EDA_DRAW_FRAME*>( m_toolMgr->GetEditFrame() );
frame->UpdateStatusBar();
frame->UpdateMsgPanel();
}
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