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kicad/gerbview/draw_gerber_screen.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 Jean-Pierre Charras, jpierre.charras at wanadoo
* Copyright (C) 2013 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2013 KiCad Developers, see AUTHORS.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 draw_gerber_screen.cpp
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <common.h>
#include <class_drawpanel.h>
#include <drawtxt.h>
#include <base_units.h>
#include <gerbview.h>
#include <colors_selection.h>
#include <class_gerber_draw_item.h>
#include <class_GERBER.h>
void GERBVIEW_FRAME::PrintPage( wxDC* aDC, LAYER_MSK aPrintMasklayer,
bool aPrintMirrorMode, void* aData )
{
// Save current draw options, because print mode has specific options:
LAYER_MSK visiblemask = GetVisibleLayers();
GBR_DISPLAY_OPTIONS imgDisplayOptions = m_DisplayOptions;
// Set draw options for printing:
SetVisibleLayers( aPrintMasklayer );
m_DisplayOptions.m_DisplayFlashedItemsFill = true;
m_DisplayOptions.m_DisplayLinesFill = true;
m_DisplayOptions.m_DisplayPolygonsFill = true;
m_DisplayOptions.m_DisplayDCodes = false;
m_DisplayOptions.m_IsPrinting = true;
m_canvas->SetPrintMirrored( aPrintMirrorMode );
// XXX -1 as drawmode?
GetGerberLayout()->Draw( m_canvas, aDC, UNSPECIFIED_DRAWMODE, wxPoint( 0, 0 ) );
m_canvas->SetPrintMirrored( false );
// Restore draw options:
SetVisibleLayers( visiblemask );
m_DisplayOptions = imgDisplayOptions;
}
void GERBVIEW_FRAME::RedrawActiveWindow( wxDC* DC, bool EraseBg )
{
GBR_SCREEN* screen = (GBR_SCREEN*) GetScreen();
if( !GetGerberLayout() )
return;
wxBusyCursor dummy;
GR_DRAWMODE drawMode = UNSPECIFIED_DRAWMODE;
switch( GetDisplayMode() )
{
default:
case 0:
break;
case 1:
drawMode = GR_COPY;
break;
case 2:
drawMode = GR_OR;
break;
}
// Draw according to the current setting. This needs to be GR_COPY or GR_OR.
GetGerberLayout()->Draw( m_canvas, DC, drawMode, wxPoint( 0, 0 ) );
// Draw the "background" now, i.e. grid and axis after gerber layers
// because most of time the actual background is erased by successive drawings of each gerber
// layer mainly in COPY mode
m_canvas->DrawBackGround( DC );
if( IsElementVisible( DCODES_VISIBLE ) )
DrawItemsDCodeID( DC, GR_COPY );
DrawWorkSheet( DC, screen, 0, IU_PER_MILS, wxEmptyString );
if( m_canvas->IsMouseCaptured() )
m_canvas->CallMouseCapture( DC, wxDefaultPosition, false );
m_canvas->DrawCrossHair( DC );
// Display the filename and the layer name (found in the gerber files, if any)
// relative to the active layer
UpdateTitleAndInfo();
}
/*
* Redraw All GerbView layers, using a buffered mode or not
*/
void GBR_LAYOUT::Draw( EDA_DRAW_PANEL* aPanel, wxDC* aDC, GR_DRAWMODE aDrawMode,
const wxPoint& aOffset )
{
// Because Images can be negative (i.e with background filled in color) items are drawn
// graphic layer per graphic layer, after the background is filled
// to a temporary bitmap
// at least when aDrawMode = GR_COPY or aDrawMode = GR_OR
// If aDrawMode = -1, items are drawn to the main screen, and therefore
// artifacts can happen with negative items or negative images
wxColour bgColor = MakeColour( g_DrawBgColor );
wxBrush bgBrush( bgColor, wxSOLID );
GERBVIEW_FRAME* gerbFrame = (GERBVIEW_FRAME*) aPanel->GetParent();
int bitmapWidth, bitmapHeight;
wxDC* plotDC = aDC;
aPanel->GetClientSize( &bitmapWidth, &bitmapHeight );
wxBitmap* layerBitmap = NULL;
wxBitmap* screenBitmap = NULL;
wxMemoryDC layerDC; // used sequentially for each gerber layer
wxMemoryDC screenDC;
// When each image must be drawn using GR_OR (transparency mode)
// or GR_COPY (stacked mode) we must use a temporary bitmap
// to draw gerber images.
// this is due to negative objects (drawn using background color) that create artifacts
// on other images when drawn on screen
bool useBufferBitmap = false;
#ifndef __WXMAC__
// Can't work with MAC
// Don't try this with retina display
if( (aDrawMode == GR_COPY) || ( aDrawMode == GR_OR ) )
useBufferBitmap = true;
#endif
// these parameters are saved here, because they are modified
// and restored later
EDA_RECT drawBox = *aPanel->GetClipBox();
double scale;
aDC->GetUserScale(&scale, &scale);
wxPoint dev_org = aDC->GetDeviceOrigin();
wxPoint logical_org = aDC->GetLogicalOrigin( );
if( useBufferBitmap )
{
layerBitmap = new wxBitmap( bitmapWidth, bitmapHeight );
screenBitmap = new wxBitmap( bitmapWidth, bitmapHeight );
layerDC.SelectObject( *layerBitmap );
aPanel->DoPrepareDC( layerDC );
aPanel->SetClipBox( drawBox );
layerDC.SetBackground( bgBrush );
layerDC.SetBackgroundMode( wxSOLID );
layerDC.Clear();
screenDC.SelectObject( *screenBitmap );
screenDC.SetBackground( bgBrush );
screenDC.SetBackgroundMode( wxSOLID );
screenDC.Clear();
plotDC = &layerDC;
}
bool doBlit = false; // this flag requests an image transfer to actual screen when true.
bool end = false;
for( LAYER_NUM layer = FIRST_LAYER; !end; ++layer )
{
LAYER_NUM active_layer = gerbFrame->getActiveLayer();
if( layer == active_layer ) // active layer will be drawn after other layers
continue;
if( layer == 32 ) // last loop: draw active layer
{
end = true;
layer = active_layer;
}
if( !gerbFrame->IsLayerVisible( layer ) )
continue;
GERBER_IMAGE* gerber = g_GERBER_List[layer];
if( gerber == NULL ) // Graphic layer not yet used
continue;
if( useBufferBitmap )
{
// Draw each layer into a bitmap first. Negative Gerber
// layers are drawn in background color.
if( gerber->HasNegativeItems() && doBlit )
{
// Set Device origin, logical origin and scale to default values
// This is needed by Blit function when using a mask.
// Beside, for Blit call, both layerDC and screenDc must have the same settings
layerDC.SetDeviceOrigin(0,0);
layerDC.SetLogicalOrigin( 0, 0 );
layerDC.SetUserScale( 1, 1 );
if( aDrawMode == GR_COPY )
{
// Use the layer bitmap itself as a mask when blitting. The bitmap
// cannot be referenced by a device context when setting the mask.
layerDC.SelectObject( wxNullBitmap );
layerBitmap->SetMask( new wxMask( *layerBitmap, bgColor ) );
layerDC.SelectObject( *layerBitmap );
screenDC.Blit( 0, 0, bitmapWidth, bitmapHeight, &layerDC, 0, 0, wxCOPY, true );
}
else if( aDrawMode == GR_OR )
{
// On Linux with a large screen, this version is much faster and without
// flicker, but gives a Pcbnew look where layer colors blend together.
// Plus it works only because the background color is black. But it may
// be more usable for some. The difference is due in part because of
// the cpu cycles needed to create the monochromatic bitmap above, and
// the extra time needed to do bit indexing into the monochromatic bitmap
// on the blit above.
screenDC.Blit( 0, 0, bitmapWidth, bitmapHeight, &layerDC, 0, 0, wxOR );
}
// Restore actual values and clear bitmap for next drawing
layerDC.SetDeviceOrigin( dev_org.x, dev_org.y );
layerDC.SetLogicalOrigin( logical_org.x, logical_org.y );
layerDC.SetUserScale( scale, scale );
layerDC.SetBackground( bgBrush );
layerDC.SetBackgroundMode( wxSOLID );
layerDC.Clear();
doBlit = false;
}
}
if( gerber->m_ImageNegative )
{
// Draw background negative (i.e. in graphic layer color) for negative images.
EDA_COLOR_T color = gerbFrame->GetLayerColor( layer );
GRSetDrawMode( &layerDC, GR_COPY );
GRFilledRect( &drawBox, plotDC, drawBox.GetX(), drawBox.GetY(),
drawBox.GetRight(), drawBox.GetBottom(),
0, color, color );
GRSetDrawMode( plotDC, GR_COPY );
doBlit = true;
}
int dcode_highlight = 0;
if( layer == gerbFrame->getActiveLayer() )
dcode_highlight = gerber->m_Selected_Tool;
GR_DRAWMODE layerdrawMode = GR_COPY;
if( aDrawMode == GR_OR && !gerber->HasNegativeItems() )
layerdrawMode = GR_OR;
// Now we can draw the current layer to the bitmap buffer
// When needed, the previous bitmap is already copied to the screen buffer.
for( GERBER_DRAW_ITEM* item = gerbFrame->GetItemsList(); item; item = item->Next() )
{
if( item->GetLayer() != layer )
continue;
GR_DRAWMODE drawMode = layerdrawMode;
if( dcode_highlight && dcode_highlight == item->m_DCode )
DrawModeAddHighlight( &drawMode);
item->Draw( aPanel, plotDC, drawMode, wxPoint(0,0) );
doBlit = true;
}
}
if( doBlit && useBufferBitmap ) // Blit is used only if aDrawMode >= 0
{
// For this Blit call, layerDC and screenDC must have the same settings
// So we set device origin, logical origin and scale to default values
// in layerDC
layerDC.SetDeviceOrigin(0,0);
layerDC.SetLogicalOrigin( 0, 0 );
layerDC.SetUserScale( 1, 1 );
// this is the last transfer to screenDC. If there are no negative items, this is
// the only one
if( aDrawMode == GR_COPY )
{
layerDC.SelectObject( wxNullBitmap );
layerBitmap->SetMask( new wxMask( *layerBitmap, bgColor ) );
layerDC.SelectObject( *layerBitmap );
screenDC.Blit( 0, 0, bitmapWidth, bitmapHeight, &layerDC, 0, 0, wxCOPY, true );
}
else if( aDrawMode == GR_OR )
{
screenDC.Blit( 0, 0, bitmapWidth, bitmapHeight, &layerDC, 0, 0, wxOR );
}
}
if( useBufferBitmap )
{
// For this Blit call, aDC and screenDC must have the same settings
// So we set device origin, logical origin and scale to default values
// in aDC
aDC->SetDeviceOrigin( 0, 0);
aDC->SetLogicalOrigin( 0, 0 );
aDC->SetUserScale( 1, 1 );
aDC->Blit( 0, 0, bitmapWidth, bitmapHeight, &screenDC, 0, 0, wxCOPY );
// Restore aDC values
aDC->SetDeviceOrigin(dev_org.x, dev_org.y);
aDC->SetLogicalOrigin( logical_org.x, logical_org.y );
aDC->SetUserScale( scale, scale );
layerDC.SelectObject( wxNullBitmap );
screenDC.SelectObject( wxNullBitmap );
delete layerBitmap;
delete screenBitmap;
}
}
void GERBVIEW_FRAME::DrawItemsDCodeID( wxDC* aDC, GR_DRAWMODE aDrawMode )
{
wxPoint pos;
int width;
double orient;
wxString Line;
GRSetDrawMode( aDC, aDrawMode );
for( GERBER_DRAW_ITEM* item = GetItemsList(); item != NULL; item = item->Next() )
{
if( IsLayerVisible( item->GetLayer() ) == false )
continue;
if( item->m_DCode <= 0 )
continue;
if( item->m_Flashed || item->m_Shape == GBR_ARC )
{
pos = item->m_Start;
}
else
{
pos.x = (item->m_Start.x + item->m_End.x) / 2;
pos.y = (item->m_Start.y + item->m_End.y) / 2;
}
pos = item->GetABPosition( pos );
Line.Printf( wxT( "D%d" ), item->m_DCode );
if( item->GetDcodeDescr() )
width = item->GetDcodeDescr()->GetShapeDim( item );
else
width = std::min( item->m_Size.x, item->m_Size.y );
orient = TEXT_ORIENT_HORIZ;
if( item->m_Flashed )
{
// A reasonable size for text is width/3 because most of time this text has 3 chars.
width /= 3;
}
else // this item is a line
{
wxPoint delta = item->m_Start - item->m_End;
if( abs( delta.x ) < abs( delta.y ) )
orient = TEXT_ORIENT_VERT;
// A reasonable size for text is width/2 because text needs margin below and above it.
// a margin = width/4 seems good
width /= 2;
}
int color = GetVisibleElementColor( DCODES_VISIBLE );
DrawGraphicText( m_canvas->GetClipBox(), aDC, pos, (EDA_COLOR_T) color, Line,
orient, wxSize( width, width ),
GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
0, false, false );
}
}
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