mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-17 14:16:10 -06:00
140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
#include "TiffThumbsCtrl.h"
|
|
#include "TiffCtrl.h"
|
|
|
|
// Scale factor between pane size and thumbs sizes
|
|
const int THUMBS_HSIZE_MUL = 9;
|
|
const int THUMBS_HSIZE_DIV = 10;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// constructor
|
|
TiffThumbsCtrl::TiffThumbsCtrl(TiffCtrl *t)
|
|
{
|
|
// connects to associated TiffCtrl
|
|
tiffCtrl = t;
|
|
|
|
// adds scrollbar
|
|
AddFrame(scrollBar);
|
|
|
|
scrollBar <<= THISBACK(OnScroll);
|
|
|
|
} // END constructor class TiffThumbsCtrl
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// destructor
|
|
TiffThumbsCtrl::~TiffThumbsCtrl()
|
|
{
|
|
|
|
} // END destructor class TiffThumbsCtrl
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// paint routine
|
|
void TiffThumbsCtrl::Paint(Draw &d)
|
|
{
|
|
// if no image opened, does nothing
|
|
if(!tiffCtrl->IsOpened())
|
|
return;
|
|
|
|
// gets the visible area based on scroll
|
|
int top = scrollBar.Get();
|
|
int bottom = top + GetSize().cy;
|
|
|
|
// gets the raster object
|
|
StreamRaster &raster = tiffCtrl->GetRaster();
|
|
|
|
// scans position vector and redraws only the visible thumbs
|
|
for(int i = 0 ; i < thumbsRects.GetCount() ; i++)
|
|
{
|
|
Rect &r = thumbsRects[i];
|
|
if(r.bottom >= top && r.top <= bottom)
|
|
{
|
|
// seeks active page
|
|
raster.SeekPage(i);
|
|
|
|
// rescale the image
|
|
ImageEncoder t;
|
|
Size sz = raster.GetSize();
|
|
sz.cx = iscale(sz.cx, thumbsScale, 100);
|
|
sz.cy = iscale(sz.cy, thumbsScale, 100);
|
|
Rescale(t, sz, raster, raster.GetSize());
|
|
d.DrawImage(r.left, r.top - top, t);
|
|
}
|
|
}
|
|
|
|
} // END TiffThumbCtrl::Paint()
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// scrollbar handler
|
|
void TiffThumbsCtrl::OnScroll(void)
|
|
{
|
|
Refresh();
|
|
|
|
} // END TiffThumbCtrl::OnScroll()
|
|
|
|
///////////////////////////////////////////////////////////////////////////////////////////////
|
|
// handles changes in images or ctrl
|
|
void TiffThumbsCtrl::Layout(void)
|
|
{
|
|
// if no image opened, hides scrollbar and return
|
|
if(!tiffCtrl->IsOpened())
|
|
{
|
|
scrollBar.Hide();
|
|
return;
|
|
}
|
|
|
|
if(!tiffCtrl)
|
|
return;
|
|
|
|
// gets the raster object
|
|
StreamRaster &raster = tiffCtrl->GetRaster();
|
|
|
|
// calculates max image width and total thumbs number and height
|
|
// and fills array of image sizes
|
|
int maxWidth = 0;
|
|
int pageCount = tiffCtrl->GetPageCount();
|
|
thumbsRects.Clear();
|
|
for(int i = 0 ; i < pageCount ; i++)
|
|
{
|
|
// seeks current page
|
|
raster.SeekPage(i);
|
|
|
|
// gets page size
|
|
Size sz = raster.GetSize();
|
|
|
|
// adds size to positions vector and updates maximums
|
|
thumbsRects.Add(sz);
|
|
if(sz.cx > maxWidth)
|
|
maxWidth = sz.cx;
|
|
}
|
|
|
|
// calculates scale factor based on max thumb width
|
|
// slightly smaller than ctrl width
|
|
int maxScaledWidth = iscale(GetSize().cx, THUMBS_HSIZE_MUL, THUMBS_HSIZE_DIV);
|
|
thumbsScale = iscale(maxScaledWidth, 100, maxWidth);
|
|
|
|
// now calculates real positions
|
|
int vPos = 0;
|
|
for(int i = 0 ; i < pageCount ; i++)
|
|
{
|
|
Rect r = thumbsRects[i];
|
|
r.right = iscale(r.right, thumbsScale, 100);
|
|
r.left = (GetSize().cx - r.right) / 2;
|
|
r.top = vPos;
|
|
r.bottom = iscale(r.bottom, thumbsScale, 100);
|
|
r.bottom += vPos;
|
|
vPos = r.bottom + 10;
|
|
thumbsRects.Set(i, r);
|
|
}
|
|
|
|
// and finally, sets up scrollbar and shows it
|
|
if(GetSize().cy <= vPos)
|
|
{
|
|
scrollBar.SetPage(GetSize().cy);
|
|
scrollBar.SetTotal(vPos /* - GetSize().cy */);
|
|
scrollBar.Show();
|
|
}
|
|
else
|
|
{
|
|
scrollBar.Hide();
|
|
}
|
|
|
|
} // END TiffThumbsCtrl::Layout()
|