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kicad/gerbview/class_gbr_layout.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012-2014 Jean-Pierre Charras jp.charras at wanadoo.fr
* Copyright (C) 1992-2014 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 class_gbr_layout.cpp
* @brief GBR_LAYOUT class functions.
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <drawtxt.h>
#include <gerbview_frame.h>
#include <class_drawpanel.h>
#include <class_gbr_layout.h>
#include <class_gerber_file_image.h>
#include <class_gerber_file_image_list.h>
GBR_LAYOUT::GBR_LAYOUT()
{
m_printLayersMask.set();
}
GBR_LAYOUT::~GBR_LAYOUT()
{
}
EDA_RECT GBR_LAYOUT::ComputeBoundingBox()
{
EDA_RECT bbox;
for( int layer = 0; layer < GERBER_DRAWLAYERS_COUNT; ++layer )
{
GERBER_FILE_IMAGE* gerber = g_GERBER_List.GetGbrImage( layer );
if( gerber == NULL ) // Graphic layer not yet used
continue;
for( GERBER_DRAW_ITEM* item = gerber->GetItemsList(); item; item = item->Next() )
bbox.Merge( item->GetBoundingBox() );
}
SetBoundingBox( bbox );
return bbox;
}
// 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, bool aPrintBlackAndWhite )
{
GERBVIEW_FRAME* gerbFrame = (GERBVIEW_FRAME*) aPanel->GetParent();
// 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 = UNSPECIFIED_DRAWMODE, items are drawn to the main screen, and therefore
// artifacts can happen with negative items or negative images
wxColour bgColor = MakeColour( gerbFrame->GetDrawBgColor() );
wxBrush bgBrush( bgColor, wxBRUSHSTYLE_SOLID );
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;
// Draw layers from bottom to top, and active layer last
// in non transparent modes, the last layer drawn mask mask previously drawn layer
for( int layer = GERBER_DRAWLAYERS_COUNT-1; !end; --layer )
{
EDA_COLOR_T layer_color = gerbFrame->GetLayerColor( layer );
int active_layer = gerbFrame->getActiveLayer();
if( layer == active_layer ) // active layer will be drawn after other layers
continue;
if( layer < 0 ) // last loop: draw active layer
{
end = true;
layer = active_layer;
}
if( !gerbFrame->IsLayerVisible( layer ) )
continue;
GERBER_FILE_IMAGE* gerber = g_GERBER_List.GetGbrImage( layer );
if( gerber == NULL ) // Graphic layer not yet used
continue;
// Force black and white draw mode on request:
if( aPrintBlackAndWhite )
gerbFrame->SetLayerColor( layer, gerbFrame->GetDrawBgColor() == BLACK ? WHITE : BLACK );
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 neg_color = gerbFrame->GetLayerColor( layer );
GRSetDrawMode( &layerDC, GR_COPY );
GRFilledRect( &drawBox, plotDC, drawBox.GetX(), drawBox.GetY(),
drawBox.GetRight(), drawBox.GetBottom(),
0, neg_color, neg_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 = gerber->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( aPrintBlackAndWhite )
gerbFrame->SetLayerColor( layer, layer_color );
}
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;
}
}
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