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memory viewer (hex editor) window viewport calculation improvement. Much more accurate and efficient than previous.

This commit is contained in:
Matthew Budd 2020-05-29 06:52:53 -04:00
parent 4c3bf6cf6c
commit 0d9b9254ff
1 changed files with 39 additions and 17 deletions
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56
src/drivers/sdl/memview.cpp
View File

@ -523,31 +523,50 @@ void memViewWin_t::showMemViewResults (int reset)
int memViewWin_t::calcVisibleRange( int *start_out, int *end_out, int *center_out )
{
GtkAdjustment *ivadj;
double v, l, u, r;
//GtkAdjustment *ivadj;
//double v, l, u, r;
int start, end, center;
GdkRectangle rect;
GtkTextIter iter;
ivadj = gtk_range_get_adjustment( GTK_RANGE(ivbar) );
gtk_text_view_get_visible_rect( textview, &rect );
gtk_text_view_get_line_at_y( textview, &iter, rect.y, NULL );
start = gtk_text_iter_get_line( &iter ) - 1;
gtk_text_view_get_line_at_y( textview, &iter, rect.y+rect.height, NULL );
end = gtk_text_iter_get_line( &iter ) + 1;
if ( start < 0 ) start = 0;
if ( end > numLines )
{
end = numLines;
}
//printf("Line Iter: %i -> %i\n", start, end );
//ivadj = gtk_range_get_adjustment( GTK_RANGE(ivbar) );
v = gtk_range_get_value( GTK_RANGE(ivbar) );
l = gtk_adjustment_get_lower( ivadj );
u = gtk_adjustment_get_upper( ivadj );
//v = gtk_range_get_value( GTK_RANGE(ivbar) );
//l = gtk_adjustment_get_lower( ivadj );
//u = gtk_adjustment_get_upper( ivadj );
r = (v - l) / (u - l);
//r = (v - l) / (u - l);
start = ((int)( r * (double)numLines )) - 16;
//start = ((int)( r * (double)numLines )) - 16;
if ( start < 0 )
{
start = 0;
}
end = start + 64;
//if ( start < 0 )
//{
// start = 0;
//}
//end = start + 64;
if ( end > numLines )
{
end = numLines;
}
//if ( end > numLines )
//{
// end = numLines;
//}
center = start + (end - start)/2;
@ -557,6 +576,9 @@ int memViewWin_t::calcVisibleRange( int *start_out, int *end_out, int *center_ou
if ( end_out ) *end_out = end;
if ( center_out ) *center_out = center;
//printf("Start:%i End:%i StartADDR:%08X EndADDR:%08X Rect: X:%i Y:%i W:%i H:%i \n",
// start, end, start*16, end*16, rect.x, rect.y, rect.width, rect.height );
return 0;
}