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kicad/common/drawframe.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2004 Jean-Pierre Charras, jean-pierre.charras@gipsa-lab.inpg.fr
* Copyright (C) 2008-2011 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 2004-2011 KiCad Developers, see change_log.txt for contributors.
*
* 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
*/
/**
* @file drawframe.cpp
*/
#include <fctsys.h>
#include <appl_wxstruct.h>
#include <gr_basic.h>
#include <common.h>
#include <bitmaps.h>
#include <macros.h>
#include <id.h>
#include <class_drawpanel.h>
#include <class_base_screen.h>
#include <wxstruct.h>
#include <confirm.h>
#include <kicad_device_context.h>
#include <dialog_helpers.h>
#include <base_units.h>
#include <vector2d.h>
#include <wx/fontdlg.h>
/**
* Definition for enabling and disabling scroll bar setting trace output. See the
* wxWidgets documentation on useing the WXTRACE environment variable.
*/
static const wxString traceScrollSettings( wxT( "KicadScrollSettings" ) );
// Configuration entry names.
static const wxString CursorShapeEntryKeyword( wxT( "CursorShape" ) );
static const wxString ShowGridEntryKeyword( wxT( "ShowGrid" ) );
static const wxString GridColorEntryKeyword( wxT( "GridColor" ) );
static const wxString LastGridSizeId( wxT( "_LastGridSize" ) );
BEGIN_EVENT_TABLE( EDA_DRAW_FRAME, EDA_BASE_FRAME )
EVT_MOUSEWHEEL( EDA_DRAW_FRAME::OnMouseEvent )
EVT_MENU_OPEN( EDA_DRAW_FRAME::OnMenuOpen )
EVT_ACTIVATE( EDA_DRAW_FRAME::OnActivate )
EVT_MENU_RANGE( ID_ZOOM_IN, ID_ZOOM_REDRAW, EDA_DRAW_FRAME::OnZoom )
EVT_MENU_RANGE( ID_POPUP_ZOOM_START_RANGE, ID_POPUP_ZOOM_END_RANGE,
EDA_DRAW_FRAME::OnZoom )
EVT_MENU_RANGE( ID_POPUP_GRID_LEVEL_1000, ID_POPUP_GRID_USER,
EDA_DRAW_FRAME::OnSelectGrid )
EVT_TOOL( ID_TB_OPTIONS_SHOW_GRID, EDA_DRAW_FRAME::OnToggleGridState )
EVT_TOOL_RANGE( ID_TB_OPTIONS_SELECT_UNIT_MM, ID_TB_OPTIONS_SELECT_UNIT_INCH,
EDA_DRAW_FRAME::OnSelectUnits )
EVT_TOOL( ID_TB_OPTIONS_SELECT_CURSOR, EDA_DRAW_FRAME::OnToggleCrossHairStyle )
EVT_UPDATE_UI( wxID_UNDO, EDA_DRAW_FRAME::OnUpdateUndo )
EVT_UPDATE_UI( wxID_REDO, EDA_DRAW_FRAME::OnUpdateRedo )
EVT_UPDATE_UI( ID_TB_OPTIONS_SHOW_GRID, EDA_DRAW_FRAME::OnUpdateGrid )
EVT_UPDATE_UI( ID_TB_OPTIONS_SELECT_CURSOR, EDA_DRAW_FRAME::OnUpdateCrossHairStyle )
EVT_UPDATE_UI_RANGE( ID_TB_OPTIONS_SELECT_UNIT_MM, ID_TB_OPTIONS_SELECT_UNIT_INCH,
EDA_DRAW_FRAME::OnUpdateUnits )
END_EVENT_TABLE()
EDA_DRAW_FRAME::EDA_DRAW_FRAME( wxWindow* father, int idtype, const wxString& title,
const wxPoint& pos, const wxSize& size, long style ) :
EDA_BASE_FRAME( father, idtype, title, pos, size, style )
{
wxSize minsize;
m_drawToolBar = NULL;
m_optionsToolBar = NULL;
m_gridSelectBox = NULL;
m_zoomSelectBox = NULL;
m_HotkeysZoomAndGridList = NULL;
m_canvas = NULL;
m_messagePanel = NULL;
m_currentScreen = NULL;
m_toolId = ID_NO_TOOL_SELECTED;
m_lastDrawToolId = ID_NO_TOOL_SELECTED;
m_showAxis = false; // true to draw axis.
m_showBorderAndTitleBlock = false; // true to display reference sheet.
m_showGridAxis = false; // true to draw the grid axis
m_cursorShape = 0;
m_LastGridSizeId = 0;
m_DrawGrid = true; // hide/Show grid. default = show
m_GridColor = DARKGRAY; // Grid color
m_snapToGrid = true;
// Internal units per inch: = 1000 for schema, = 10000 for PCB
minsize.x = 470;
minsize.y = 350 + m_MsgFrameHeight;
// Pane sizes for status bar.
// @todo these should be sized based on typical text content, like
// "dx -10.123 -10.123 dy -10.123 -10.123" using the system font which is
// in play on a particular platform, and should not be constants.
// Please do not reduce these constant values, and please use dynamic
// system font specific sizing in the future.
#define ZOOM_DISPLAY_SIZE 60
#define COORD_DISPLAY_SIZE 165
#define DELTA_DISPLAY_SIZE 245
#define UNITS_DISPLAY_SIZE 65
#define FUNCTION_DISPLAY_SIZE 110
static const int dims[6] = { -1, ZOOM_DISPLAY_SIZE,
COORD_DISPLAY_SIZE, DELTA_DISPLAY_SIZE,
UNITS_DISPLAY_SIZE, FUNCTION_DISPLAY_SIZE };
CreateStatusBar( 6 );
SetStatusWidths( 6, dims );
// Create child subwindows.
GetClientSize( &m_FrameSize.x, &m_FrameSize.y );
m_FramePos.x = m_FramePos.y = 0;
m_FrameSize.y -= m_MsgFrameHeight;
m_canvas = new EDA_DRAW_PANEL( this, -1, wxPoint( 0, 0 ), m_FrameSize );
m_messagePanel = new EDA_MSG_PANEL( this, -1, wxPoint( 0, m_FrameSize.y ),
wxSize( m_FrameSize.x, m_MsgFrameHeight ) );
m_messagePanel->SetBackgroundColour( wxColour( ColorRefs[LIGHTGRAY].m_Red,
ColorRefs[LIGHTGRAY].m_Green,
ColorRefs[LIGHTGRAY].m_Blue ) );
}
EDA_DRAW_FRAME::~EDA_DRAW_FRAME()
{
SAFE_DELETE( m_currentScreen );
m_auimgr.UnInit();
}
void EDA_DRAW_FRAME::unitsChangeRefresh()
{
UpdateStatusBar();
EDA_ITEM* item = GetScreen()->GetCurItem();
if( item )
item->DisplayInfo( this );
}
void EDA_DRAW_FRAME::EraseMsgBox()
{
if( m_messagePanel )
m_messagePanel->EraseMsgBox();
}
void EDA_DRAW_FRAME::OnActivate( wxActivateEvent& event )
{
m_FrameIsActive = event.GetActive();
if( m_canvas )
m_canvas->SetCanStartBlock( -1 );
event.Skip(); // required under wxMAC
}
void EDA_DRAW_FRAME::OnMenuOpen( wxMenuEvent& event )
{
if( m_canvas )
m_canvas->SetCanStartBlock( -1 );
event.Skip();
}
void EDA_DRAW_FRAME::OnToggleGridState( wxCommandEvent& aEvent )
{
SetGridVisibility( !IsGridVisible() );
m_canvas->Refresh();
}
void EDA_DRAW_FRAME::OnSelectUnits( wxCommandEvent& aEvent )
{
if( aEvent.GetId() == ID_TB_OPTIONS_SELECT_UNIT_MM && g_UserUnit != MILLIMETRES )
{
g_UserUnit = MILLIMETRES;
unitsChangeRefresh();
}
else if( aEvent.GetId() == ID_TB_OPTIONS_SELECT_UNIT_INCH && g_UserUnit != INCHES )
{
g_UserUnit = INCHES;
unitsChangeRefresh();
}
}
void EDA_DRAW_FRAME::OnToggleCrossHairStyle( wxCommandEvent& aEvent )
{
INSTALL_UNBUFFERED_DC( dc, m_canvas );
m_canvas->CrossHairOff( &dc );
m_cursorShape = !m_cursorShape;
m_canvas->CrossHairOn( &dc );
}
void EDA_DRAW_FRAME::OnUpdateUndo( wxUpdateUIEvent& aEvent )
{
if( GetScreen() )
aEvent.Enable( GetScreen()->GetUndoCommandCount() > 0 );
}
void EDA_DRAW_FRAME::OnUpdateRedo( wxUpdateUIEvent& aEvent )
{
if( GetScreen() )
aEvent.Enable( GetScreen()->GetRedoCommandCount() > 0 );
}
void EDA_DRAW_FRAME::OnUpdateUnits( wxUpdateUIEvent& aEvent )
{
bool enable;
enable = ( ((aEvent.GetId() == ID_TB_OPTIONS_SELECT_UNIT_MM) && (g_UserUnit == MILLIMETRES))
|| ((aEvent.GetId() == ID_TB_OPTIONS_SELECT_UNIT_INCH) && (g_UserUnit == INCHES)) );
aEvent.Check( enable );
DisplayUnitsMsg();
}
void EDA_DRAW_FRAME::OnUpdateGrid( wxUpdateUIEvent& aEvent )
{
wxString tool_tip = IsGridVisible() ? _( "Hide grid" ) : _( "Show grid" );
aEvent.Check( IsGridVisible() );
m_optionsToolBar->SetToolShortHelp( ID_TB_OPTIONS_SHOW_GRID, tool_tip );
}
void EDA_DRAW_FRAME::OnUpdateCrossHairStyle( wxUpdateUIEvent& aEvent )
{
aEvent.Check( m_cursorShape );
}
void EDA_DRAW_FRAME::ReCreateAuxiliaryToolbar()
{
}
void EDA_DRAW_FRAME::ReCreateMenuBar()
{
}
void EDA_DRAW_FRAME::OnHotKey( wxDC* aDC, int aHotKey, const wxPoint& aPosition, EDA_ITEM* aItem )
{
}
void EDA_DRAW_FRAME::ToolOnRightClick( wxCommandEvent& event )
{
}
void EDA_DRAW_FRAME::PrintPage( wxDC* aDC,int aPrintMask, bool aPrintMirrorMode, void* aData )
{
wxMessageBox( wxT("EDA_DRAW_FRAME::PrintPage() error") );
}
void EDA_DRAW_FRAME::OnSelectGrid( wxCommandEvent& event )
{
int* clientData;
int id = ID_POPUP_GRID_LEVEL_100;
if( event.GetEventType() == wxEVT_COMMAND_COMBOBOX_SELECTED )
{
if( m_gridSelectBox == NULL )
return;
/*
* Don't use wxCommandEvent::GetClientData() here. It always
* returns NULL in GTK. This solution is not as elegant but
* it works.
*/
int index = m_gridSelectBox->GetSelection();
wxASSERT( index != wxNOT_FOUND );
clientData = (int*) m_gridSelectBox->wxItemContainer::GetClientData( index );
if( clientData != NULL )
id = *clientData;
}
else
{
id = event.GetId();
/* Update the grid select combobox if the grid size was changed
* by menu event.
*/
if( m_gridSelectBox != NULL )
{
for( size_t i = 0; i < m_gridSelectBox->GetCount(); i++ )
{
clientData = (int*) m_gridSelectBox->wxItemContainer::GetClientData( i );
if( clientData && id == *clientData )
{
m_gridSelectBox->SetSelection( i );
break;
}
}
}
}
BASE_SCREEN* screen = GetScreen();
if( screen->GetGridId() == id )
return;
/*
* This allows for saving non-sequential command ID offsets used that
* may be used in the grid size combobox. Do not use the selection
* index returned by GetSelection().
*/
m_LastGridSizeId = id - ID_POPUP_GRID_LEVEL_1000;
screen->SetGrid( id );
screen->SetCrossHairPosition( screen->RefPos( true ) );
Refresh();
}
void EDA_DRAW_FRAME::OnSelectZoom( wxCommandEvent& event )
{
if( m_zoomSelectBox == NULL )
return; // Should not happen!
int id = m_zoomSelectBox->GetCurrentSelection();
if( id < 0 || !( id < (int)m_zoomSelectBox->GetCount() ) )
return;
if( id == 0 ) // Auto zoom (Fit in Page)
{
Zoom_Automatique( true );
}
else
{
id--;
double selectedZoom = GetScreen()->m_ZoomList[id];
if( GetScreen()->GetZoom() == selectedZoom )
return;
GetScreen()->SetZoom( selectedZoom );
RedrawScreen( GetScreen()->GetScrollCenterPosition(), false );
}
}
double EDA_DRAW_FRAME::GetZoom( void )
{
return GetScreen()->GetZoom();
}
void EDA_DRAW_FRAME::OnMouseEvent( wxMouseEvent& event )
{
event.Skip();
}
void EDA_DRAW_FRAME::OnLeftDClick( wxDC* DC, const wxPoint& MousePos )
{
}
void EDA_DRAW_FRAME::DisplayToolMsg( const wxString& msg )
{
SetStatusText( msg, 5 );
}
void EDA_DRAW_FRAME::DisplayUnitsMsg()
{
wxString msg;
switch( g_UserUnit )
{
case INCHES:
msg = _( "Inches" );
break;
case MILLIMETRES:
msg += _( "mm" );
break;
default:
msg += _( "Units" );
break;
}
SetStatusText( msg, 4 );
}
void EDA_DRAW_FRAME::OnSize( wxSizeEvent& SizeEv )
{
m_FrameSize = GetClientSize( );
SizeEv.Skip();
}
void EDA_DRAW_FRAME::SetToolID( int aId, int aCursor, const wxString& aToolMsg )
{
// Keep default cursor in toolbars
SetCursor( wxNullCursor );
// Change m_canvas cursor if requested.
if( m_canvas && aCursor >= 0 )
m_canvas->SetCurrentCursor( aCursor );
DisplayToolMsg( aToolMsg );
if( aId < 0 )
return;
wxCHECK2_MSG( aId >= ID_NO_TOOL_SELECTED, aId = ID_NO_TOOL_SELECTED,
wxString::Format( wxT( "Current tool ID cannot be set to %d." ), aId ) );
m_toolId = aId;
}
void EDA_DRAW_FRAME::OnGrid( int grid_type )
{
}
wxPoint EDA_DRAW_FRAME::GetGridPosition( const wxPoint& aPosition )
{
wxPoint pos = aPosition;
if( m_currentScreen != NULL && m_snapToGrid )
pos = m_currentScreen->GetNearestGridPosition( aPosition );
return pos;
}
int EDA_DRAW_FRAME::ReturnBlockCommand( int key )
{
return 0;
}
void EDA_DRAW_FRAME::InitBlockPasteInfos()
{
GetScreen()->m_BlockLocate.ClearItemsList();
m_canvas->SetMouseCaptureCallback( NULL );
}
void EDA_DRAW_FRAME::HandleBlockPlace( wxDC* DC )
{
}
bool EDA_DRAW_FRAME::HandleBlockEnd( wxDC* DC )
{
return false;
}
void EDA_DRAW_FRAME::SetLanguage( wxCommandEvent& event )
{
EDA_BASE_FRAME::SetLanguage( event );
}
void EDA_DRAW_FRAME::UpdateStatusBar()
{
wxString Line;
BASE_SCREEN* screen = GetScreen();
if( !screen )
return;
// Display Zoom level: zoom = zoom_coeff/ZoomScalar
Line.Printf( wxT( "Z %g" ), screen->GetZoom() );
SetStatusText( Line, 1 );
// Absolute and relative cursor positions are handled by overloading this function and
// handling the internal to user units conversion at the appropriate level.
// refresh units display
DisplayUnitsMsg();
}
void EDA_DRAW_FRAME::LoadSettings()
{
wxASSERT( wxGetApp().GetSettings() != NULL );
wxConfig* cfg = wxGetApp().GetSettings();
EDA_BASE_FRAME::LoadSettings();
cfg->Read( m_FrameName + CursorShapeEntryKeyword, &m_cursorShape, ( long )0 );
bool btmp;
if ( cfg->Read( m_FrameName + ShowGridEntryKeyword, &btmp ) )
SetGridVisibility( btmp );
int itmp;
if( cfg->Read( m_FrameName + GridColorEntryKeyword, &itmp ) )
SetGridColor( itmp );
cfg->Read( m_FrameName + LastGridSizeId, &m_LastGridSizeId, 0L );
}
void EDA_DRAW_FRAME::SaveSettings()
{
wxASSERT( wxGetApp().GetSettings() != NULL );
wxConfig* cfg = wxGetApp().GetSettings();
EDA_BASE_FRAME::SaveSettings();
cfg->Write( m_FrameName + CursorShapeEntryKeyword, m_cursorShape );
cfg->Write( m_FrameName + ShowGridEntryKeyword, IsGridVisible() );
cfg->Write( m_FrameName + GridColorEntryKeyword, GetGridColor() );
cfg->Write( m_FrameName + LastGridSizeId, ( long ) m_LastGridSizeId );
}
void EDA_DRAW_FRAME::AppendMsgPanel( const wxString& textUpper,
const wxString& textLower,
int color, int pad )
{
if( m_messagePanel == NULL )
return;
m_messagePanel->AppendMessage( textUpper, textLower, color, pad );
}
void EDA_DRAW_FRAME::ClearMsgPanel( void )
{
if( m_messagePanel == NULL )
return;
m_messagePanel->EraseMsgBox();
}
wxString EDA_DRAW_FRAME::CoordinateToString( int aValue, bool aConvertToMils )
{
return ::CoordinateToString( aValue, aConvertToMils );
}
wxString EDA_DRAW_FRAME::LengthDoubleToString( double aValue, bool aConvertToMils )
{
return ::LengthDoubleToString( aValue, aConvertToMils );
}
bool EDA_DRAW_FRAME::HandleBlockBegin( wxDC* aDC, int aKey, const wxPoint& aPosition )
{
BLOCK_SELECTOR* Block = &GetScreen()->m_BlockLocate;
if( ( Block->GetCommand() != BLOCK_IDLE ) || ( Block->GetState() != STATE_NO_BLOCK ) )
return false;
Block->SetCommand( (BLOCK_COMMAND_T) ReturnBlockCommand( aKey ) );
if( Block->GetCommand() == 0 )
return false;
switch( Block->GetCommand() )
{
case BLOCK_IDLE:
break;
case BLOCK_MOVE: /* Move */
case BLOCK_DRAG: /* Drag */
case BLOCK_COPY: /* Copy */
case BLOCK_DELETE: /* Delete */
case BLOCK_SAVE: /* Save */
case BLOCK_ROTATE: /* Rotate 90 deg */
case BLOCK_FLIP: /* Flip */
case BLOCK_ZOOM: /* Window Zoom */
case BLOCK_MIRROR_X:
case BLOCK_MIRROR_Y: /* mirror */
case BLOCK_PRESELECT_MOVE: /* Move with preselection list*/
Block->InitData( m_canvas, aPosition );
break;
case BLOCK_PASTE:
Block->InitData( m_canvas, aPosition );
Block->SetLastCursorPosition( wxPoint( 0, 0 ) );
InitBlockPasteInfos();
if( Block->GetCount() == 0 ) /* No data to paste */
{
DisplayError( this, wxT( "No Block to paste" ), 20 );
GetScreen()->m_BlockLocate.SetCommand( BLOCK_IDLE );
m_canvas->SetMouseCaptureCallback( NULL );
return true;
}
if( !m_canvas->IsMouseCaptured() )
{
Block->ClearItemsList();
DisplayError( this,
wxT( "EDA_DRAW_FRAME::HandleBlockBegin() Err: m_mouseCaptureCallback NULL" ) );
return true;
}
Block->SetState( STATE_BLOCK_MOVE );
m_canvas->CallMouseCapture( aDC, aPosition, false );
break;
default:
{
wxString msg;
msg << wxT( "EDA_DRAW_FRAME::HandleBlockBegin() error: Unknown command " ) <<
Block->GetCommand();
DisplayError( this, msg );
}
break;
}
Block->SetMessageBlock( this );
return true;
}
void EDA_DRAW_FRAME::AdjustScrollBars( const wxPoint& aCenterPositionIU )
{
BASE_SCREEN* screen = GetScreen();
if( screen == NULL || m_canvas == NULL )
return;
// There are no safety limits on these calculations, so in NANOMETRES build it
// still blows up. This is incomplete work.
double scale = screen->GetScalingFactor();
wxLogTrace( traceScrollSettings, wxT( "Center Position = ( %d, %d ), scale = %.16g" ),
aCenterPositionIU.x, aCenterPositionIU.y, scale );
// Calculate the portion of the drawing that can be displayed in the
// client area at the current zoom level.
// visible viewport in device units ~ pixels
wxSize clientSizeDU = m_canvas->GetClientSize();
// Size of the client window in IU
DSIZE clientSizeIU( clientSizeDU.x / scale, clientSizeDU.y / scale );
// Full drawing or "page" rectangle in internal units
DBOX pageRectIU( 0, 0, GetPageSizeIU().x, GetPageSizeIU().y );
// The upper left corner of the client rectangle in internal units.
double xIU = aCenterPositionIU.x - clientSizeIU.x / 2.0;
double yIU = aCenterPositionIU.y - clientSizeIU.y / 2.0;
// If drawn around the center, adjust the client rectangle accordingly.
if( screen->m_Center )
{
// half page offset.
xIU += pageRectIU.width / 2.0;
yIU += pageRectIU.height / 2.0;
}
DBOX clientRectIU( xIU, yIU, clientSizeIU.x, clientSizeIU.y );
DSIZE virtualSizeIU;
if( pageRectIU.GetLeft() < clientRectIU.GetLeft() && pageRectIU.GetRight() > clientRectIU.GetRight() )
{
virtualSizeIU.x = pageRectIU.GetSize().x;
}
else
{
double drawingCenterX = pageRectIU.x + ( pageRectIU.width / 2 );
double clientCenterX = clientRectIU.x + ( clientRectIU.width / 2 );
if( clientRectIU.width > pageRectIU.width )
{
if( drawingCenterX > clientCenterX )
virtualSizeIU.x = ( drawingCenterX - clientRectIU.GetLeft() ) * 2;
else if( drawingCenterX < clientCenterX )
virtualSizeIU.x = ( clientRectIU.GetRight() - drawingCenterX ) * 2;
else
virtualSizeIU.x = clientRectIU.width;
}
else
{
if( drawingCenterX > clientCenterX )
virtualSizeIU.x = pageRectIU.width +
( (pageRectIU.GetLeft() - clientRectIU.GetLeft() ) * 2 );
else if( drawingCenterX < clientCenterX )
virtualSizeIU.x = pageRectIU.width +
( (clientRectIU.GetRight() - pageRectIU.GetRight() ) * 2 );
else
virtualSizeIU.x = pageRectIU.width;
}
}
if( pageRectIU.GetTop() < clientRectIU.GetTop() && pageRectIU.GetBottom() > clientRectIU.GetBottom() )
{
virtualSizeIU.y = pageRectIU.GetSize().y;
}
else
{
int drawingCenterY = pageRectIU.y + ( pageRectIU.height / 2 );
int clientCenterY = clientRectIU.y + ( clientRectIU.height / 2 );
if( clientRectIU.height > pageRectIU.height )
{
if( drawingCenterY > clientCenterY )
virtualSizeIU.y = ( drawingCenterY - clientRectIU.GetTop() ) * 2;
else if( drawingCenterY < clientCenterY )
virtualSizeIU.y = ( clientRectIU.GetBottom() - drawingCenterY ) * 2;
else
virtualSizeIU.y = clientRectIU.height;
}
else
{
if( drawingCenterY > clientCenterY )
virtualSizeIU.y = pageRectIU.height +
( ( pageRectIU.GetTop() - clientRectIU.GetTop() ) * 2 );
else if( drawingCenterY < clientCenterY )
virtualSizeIU.y = pageRectIU.height +
( ( clientRectIU.GetBottom() - pageRectIU.GetBottom() ) * 2 );
else
virtualSizeIU.y = pageRectIU.height;
}
}
if( screen->m_Center )
{
screen->m_DrawOrg.x = -KiROUND( virtualSizeIU.x / 2.0 );
screen->m_DrawOrg.y = -KiROUND( virtualSizeIU.y / 2.0 );
}
else
{
screen->m_DrawOrg.x = -KiROUND( ( virtualSizeIU.x - pageRectIU.width ) / 2.0 );
screen->m_DrawOrg.y = -KiROUND( ( virtualSizeIU.y - pageRectIU.height ) / 2.0 );
}
/* Always set scrollbar pixels per unit to 1 unless you want the zoom
* around cursor to jump around. This reported problem occurs when the
* zoom point is not on a pixel per unit increment. If you set the
* pixels per unit to 10, you have potential for the zoom point to
* jump around +/-5 pixels from the nearest grid point.
*/
screen->m_ScrollPixelsPerUnitX = screen->m_ScrollPixelsPerUnitY = 1;
// Number of scroll bar units for the given zoom level in device units.
double unitsX = virtualSizeIU.x * scale;
double unitsY = virtualSizeIU.y * scale;
// Calculate the scroll bar position in internal units to place the
// center position at the center of client rectangle.
screen->SetScrollCenterPosition( aCenterPositionIU );
double posX = aCenterPositionIU.x - clientRectIU.width /2.0 - screen->m_DrawOrg.x;
double posY = aCenterPositionIU.y - clientRectIU.height/2.0 - screen->m_DrawOrg.y;
// Convert scroll bar position to device units.
posX = KiROUND( posX * scale );
posY = KiROUND( posY * scale );
if( posX < 0 )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar X position %d" ), posX );
posX = 0;
}
if( posX > unitsX )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar X position %d" ), posX );
posX = unitsX;
}
if( posY < 0 )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar Y position %d" ), posY );
posY = 0;
}
if( posY > unitsY )
{
wxLogTrace( traceScrollSettings, wxT( "Required scroll bar Y position %d" ), posY );
posY = unitsY;
}
screen->m_ScrollbarPos = wxPoint( KiROUND( posX ), KiROUND( posY ) );
screen->m_ScrollbarNumber = wxSize( KiROUND( unitsX ), KiROUND( unitsY ) );
wxLogTrace( traceScrollSettings,
wxT( "Drawing = (%.16g, %.16g), Client = (%.16g, %.16g), Offset = (%d, %d), SetScrollbars(%d, %d, %d, %d, %d, %d)" ),
virtualSizeIU.x, virtualSizeIU.y, clientSizeIU.x, clientSizeIU.y,
screen->m_DrawOrg.x, screen->m_DrawOrg.y,
screen->m_ScrollPixelsPerUnitX, screen->m_ScrollPixelsPerUnitY,
screen->m_ScrollbarNumber.x, screen->m_ScrollbarNumber.y,
screen->m_ScrollbarPos.x, screen->m_ScrollbarPos.y );
bool noRefresh = true;
m_canvas->SetScrollbars( screen->m_ScrollPixelsPerUnitX,
screen->m_ScrollPixelsPerUnitY,
screen->m_ScrollbarNumber.x,
screen->m_ScrollbarNumber.y,
screen->m_ScrollbarPos.x,
screen->m_ScrollbarPos.y, noRefresh );
}
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