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/*
xmunipack - zoom set
Copyright © 2021-22 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/>.
A new numerial type MuniZoomSet is introduced.
The purpose of the complex structure is handling of
specific set of values for zoom 4:1, 2:1 ... 1:8,
and to implement operations on the set.
*/
#include "zoomer.h"
MuniZoomSet::MuniZoomSet()
{
Init();
}
void MuniZoomSet::Init()
{
index = 5;
nelements = 11;
table = new double[nelements];
table[0] = 1.0 /16.0;
table[1] = 1.0 / 8.0;
table[2] = 1.0 / 4.0;
table[3] = 1.0 / 3.0;
table[4] = 1.0 / 2.0;
table[5] = 1.0;
table[6] = 2.0;
table[7] = 3.0;
table[8] = 4.0;
table[9] = 8.0;
table[10]=16.0;
}
MuniZoomSet::MuniZoomSet(double zoom)
{
Init();
if( SetZoom(zoom) )
;
else
wxFAIL_MSG("MuniZoomSet(double) failed");
}
MuniZoomSet::MuniZoomSet(int i)
{
Init();
if( SetZoom(i) )
;
else
wxFAIL_MSG("MuniZoomSet(int) failed");
}
MuniZoomSet::~MuniZoomSet()
{
delete[] table;
}
MuniZoomSet::MuniZoomSet(const MuniZoomSet& other)
{
nelements = other.nelements;
table = new double[nelements];
std::copy(other.table,other.table+nelements,table);
}
MuniZoomSet& MuniZoomSet::operator = (const MuniZoomSet& other)
{
if( this != &other ) {
int n = other.nelements;
double *t = new double[nelements];
std::copy(other.table,other.table+nelements,t);
if( nelements > 0 )
delete[] table;
nelements = n;
table = t;
}
return *this;
}
int MuniZoomSet::GetIndex() const
{
return index;
}
double MuniZoomSet::GetZoom()
{
wxASSERT(0 <= index && index < nelements && table);
return table[index];
}
bool MuniZoomSet::SetZoom(int i)
{
if( 0 <= i && i < nelements ) {
index = i;
return true;
}
else
return false;
}
bool MuniZoomSet::SetZoom(double z)
{
int n = -1;
for(int i = 0; i < nelements; i++) {
if( fabs(z - table[i]) < 0.001 ) {
n = i;
break;
}
}
bool found = n != -1;
if( found ) index = n;
return found;
}
double MuniZoomSet::SetBestFitZoom(const wxSize& window, const wxSize& image)
{
index = 0;
for(int i = 5; i >= 0; i--) {
bool horizontal = window.GetWidth() >= image.GetWidth()*table[i];
bool vertical = window.GetHeight() >= image.GetHeight()*table[i];
if( horizontal && vertical ) {
index = i;
break;
}
}
/*
This part check whatever images with the selected zoom have both sizes
non-zero. Otherwise, the zoom is reduced.
*/
while( (int(image.GetWidth()*table[index]) < 1 ||
int(image.GetHeight()*table[index]) < 1 ) && table[index] < 1.001 )
index++;
wxLogDebug("SetBestFitZoom %d %d %d %d",index,index,
int(image.GetWidth()*table[index]),int(image.GetHeight()*table[index]));
return table[index];
}
double MuniZoomSet::SetNormalZoom()
{
for(int i = 0; i < nelements; i++)
if( fabs(table[i] - 1) < 1e-3 ) {
index = i;
break;
}
return table[index];
}
double MuniZoomSet::Increase()
{
if( index < nelements-2 )
index++;
return table[index];
}
double MuniZoomSet::Decrease()
{
if( index > 0)
index--;
return table[index];
}
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