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/*
xmunipack - preview
Copyright © 2021-2022 F.Hroch (hroch@physics.muni.cz)
This file is part of Munipack.
Munipack 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 3 of the License, or
(at your option) any later version.
Munipack 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 Munipack. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dispreview.h"
#include "zoomer.h"
#include "types.h"
#include "event.h"
#include <wx/wx.h>
#include <vector>
#ifdef __WXDEBUG__
#include <wx/debug.h>
#endif
MuniDisplayPreview::MuniDisplayPreview(wxWindow *w, const MuniConfig *config):
wxWindow(w,wxID_ANY), shrink(0),xoff(0), yoff(0), width(0), height(0),
display_size(wxDefaultSize)
{
SetBackgroundColour(config->display_bgcolour);
Bind(wxEVT_PAINT,&MuniDisplayPreview::OnPaint,this);
Bind(wxEVT_SIZE,&MuniDisplayPreview::OnSize,this);
}
void MuniDisplayPreview::OnSize(wxSizeEvent& event)
{
wxSize size(event.GetSize());
if( size != display_size ) {
wxLogDebug("MuniDisplayPreview::OnSize changed %dx%d",size.GetWidth(),size.GetHeight());
display_size = size;
MuniSizeChangedEvent event(EVT_SIZE_CHANGED);
event.size = size;
wxQueueEvent(GetParent(),event.Clone());
}
event.Skip();
}
void MuniDisplayPreview::OnPaint(wxPaintEvent& event)
{
if( canvas.IsOk() ) {
wxPaintDC dc(this);
dc.DrawBitmap(wxBitmap(canvas),xoff,yoff);
}
}
void MuniDisplayPreview::InitCanvas()
{
const wxSize size(GetSize());
wxASSERT(width > 0 && height > 0 && size.GetWidth() > 0 && size.GetHeight() > 0 &&
shrink > 0);
MuniZoomSet zset;
double z = zset.SetBestFitZoom(size,wxSize(width,height));
if( z < 1.0 )
shrink = int(1.0 / z + 0.5);
else
shrink = 1;
int w = wxMax(width / shrink,1);
int h = wxMax(height / shrink,1);
wxASSERT(w > 0 && h > 0);
canvas = wxImage(w,h);
xoff = wxMax(size.GetWidth() - w,0)/2;
yoff = wxMax(size.GetHeight() - h,0)/2;
// wxLogDebug("%d %d %d %d %d %d %d %d %d",shrink,w,h,width,height,xoff,yoff,
// size.GetWidth(),size.GetHeight());
wxASSERT(xoff >= 0 && yoff >= 0);
// what about removing of the negative poisitons from the image?
}
void MuniDisplayPreview::RefreshCanvas(int crow, const wxImage& subwin)
{
if( ! (subwin.GetWidth() > 0 && subwin.GetHeight() > 0) )
return;
wxASSERT(canvas.GetWidth() > 0 && canvas.GetHeight() > 0);
int y = canvas.GetHeight() - crow / shrink;
canvas.Paste(subwin,0,y);
RefreshRect(wxRect(xoff+0,yoff+y,subwin.GetWidth(),subwin.GetHeight()));
}
wxImage MuniDisplayPreview::GetCanvas() const
{
return canvas;
}
void MuniDisplayPreview::SetZoom(double zoom)
{
wxASSERT(zoom > 0);
if( zoom < 1.01 )
shrink = int(1.0/zoom + 0.5);
else
shrink = 1;
}
void MuniDisplayPreview::SetImageSize(const wxSize& size)
{
wxASSERT(size.IsFullySpecified());
width = size.GetWidth();
height = size.GetHeight();
InitCanvas();
}
void MuniDisplayPreview::SetZoom(double zoom, const wxSize& size)
{
if( shrink > 0 ) return;
SetZoom(zoom);
SetImageSize(size);
}
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