moved wxScrollBar geometry methods out of wxRenderer, they are common for all themes
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42716 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
@@ -837,270 +837,6 @@ void wxStdRenderer::DrawScrollCorner(wxDC& dc, const wxRect& rect)
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DrawSolidRect(dc, wxSCHEME_COLOUR(m_scheme, CONTROL), rect);
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}
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// ----------------------------------------------------------------------------
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// scrollbars geometry
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// ----------------------------------------------------------------------------
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#if wxUSE_SCROLLBAR
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/* static */
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void wxStdRenderer::GetScrollBarThumbSize(wxCoord length,
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int thumbPos,
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int thumbSize,
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int range,
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wxCoord *thumbStart,
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wxCoord *thumbEnd)
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{
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// the thumb can't be made less than this number of pixels
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static const wxCoord thumbMinWidth = 8; // FIXME: should be configurable
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*thumbStart = (length*thumbPos) / range;
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*thumbEnd = (length*(thumbPos + thumbSize)) / range;
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if ( *thumbEnd - *thumbStart < thumbMinWidth )
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{
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// adjust the end if possible
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if ( *thumbStart <= length - thumbMinWidth )
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{
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// yes, just make it wider
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*thumbEnd = *thumbStart + thumbMinWidth;
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}
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else // it is at the bottom of the scrollbar
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{
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// so move it a bit up
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*thumbStart = length - thumbMinWidth;
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*thumbEnd = length;
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}
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}
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}
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wxRect wxStdRenderer::GetScrollbarRect(const wxScrollBar *scrollbar,
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wxScrollBar::Element elem,
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int thumbPos) const
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{
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if ( thumbPos == -1 )
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{
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thumbPos = scrollbar->GetThumbPosition();
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}
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const wxSize sizeArrow = GetScrollbarArrowSize();
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wxSize sizeTotal = scrollbar->GetClientSize();
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wxCoord *start, *width;
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wxCoord length, arrow;
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wxRect rect;
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if ( scrollbar->IsVertical() )
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{
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rect.x = 0;
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rect.width = sizeTotal.x;
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length = sizeTotal.y;
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start = &rect.y;
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width = &rect.height;
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arrow = sizeArrow.y;
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}
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else // horizontal
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{
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rect.y = 0;
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rect.height = sizeTotal.y;
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length = sizeTotal.x;
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start = &rect.x;
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width = &rect.width;
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arrow = sizeArrow.x;
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}
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switch ( elem )
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{
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case wxScrollBar::Element_Arrow_Line_1:
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*start = 0;
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*width = arrow;
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break;
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case wxScrollBar::Element_Arrow_Line_2:
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*start = length - arrow;
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*width = arrow;
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break;
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case wxScrollBar::Element_Arrow_Page_1:
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case wxScrollBar::Element_Arrow_Page_2:
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// we don't have them at all
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break;
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case wxScrollBar::Element_Thumb:
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case wxScrollBar::Element_Bar_1:
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case wxScrollBar::Element_Bar_2:
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// we need to calculate the thumb position - do it
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{
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length -= 2*arrow;
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wxCoord thumbStart, thumbEnd;
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int range = scrollbar->GetRange();
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if ( !range )
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{
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thumbStart =
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thumbEnd = 0;
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}
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else
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{
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GetScrollBarThumbSize(length,
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thumbPos,
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scrollbar->GetThumbSize(),
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range,
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&thumbStart,
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&thumbEnd);
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}
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if ( elem == wxScrollBar::Element_Thumb )
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{
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*start = thumbStart;
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*width = thumbEnd - thumbStart;
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}
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else if ( elem == wxScrollBar::Element_Bar_1 )
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{
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*start = 0;
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*width = thumbStart;
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}
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else // elem == wxScrollBar::Element_Bar_2
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{
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*start = thumbEnd;
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*width = length - thumbEnd;
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}
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// everything is relative to the start of the shaft so far
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*start += arrow;
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}
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break;
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case wxScrollBar::Element_Max:
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default:
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wxFAIL_MSG( _T("unknown scrollbar element") );
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}
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return rect;
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}
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wxCoord wxStdRenderer::GetScrollbarSize(const wxScrollBar *scrollbar)
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{
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const wxSize sizeArrowSB = GetScrollbarArrowSize();
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wxCoord sizeArrow, sizeTotal;
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if ( scrollbar->GetWindowStyle() & wxVERTICAL )
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{
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sizeArrow = sizeArrowSB.y;
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sizeTotal = scrollbar->GetSize().y;
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}
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else // horizontal
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{
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sizeArrow = sizeArrowSB.x;
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sizeTotal = scrollbar->GetSize().x;
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}
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return sizeTotal - 2*sizeArrow;
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}
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wxHitTest
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wxStdRenderer::HitTestScrollbar(const wxScrollBar *scrollbar, const wxPoint& pt) const
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{
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// we only need to work with either x or y coord depending on the
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// orientation, choose one (but still check the other one to verify if the
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// mouse is in the window at all)
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const wxSize sizeArrowSB = GetScrollbarArrowSize();
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wxCoord coord, sizeArrow, sizeTotal;
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wxSize size = scrollbar->GetSize();
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if ( scrollbar->GetWindowStyle() & wxVERTICAL )
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{
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if ( pt.x < 0 || pt.x > size.x )
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return wxHT_NOWHERE;
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coord = pt.y;
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sizeArrow = sizeArrowSB.y;
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sizeTotal = size.y;
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}
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else // horizontal
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{
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if ( pt.y < 0 || pt.y > size.y )
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return wxHT_NOWHERE;
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coord = pt.x;
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sizeArrow = sizeArrowSB.x;
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sizeTotal = size.x;
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}
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// test for the arrows first as it's faster
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if ( coord < 0 || coord > sizeTotal )
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{
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return wxHT_NOWHERE;
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}
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else if ( coord < sizeArrow )
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{
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return wxHT_SCROLLBAR_ARROW_LINE_1;
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}
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else if ( coord > sizeTotal - sizeArrow )
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{
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return wxHT_SCROLLBAR_ARROW_LINE_2;
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}
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else
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{
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// calculate the thumb position in pixels
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sizeTotal -= 2*sizeArrow;
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wxCoord thumbStart, thumbEnd;
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int range = scrollbar->GetRange();
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if ( !range )
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{
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// clicking the scrollbar without range has no effect
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return wxHT_NOWHERE;
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}
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else
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{
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GetScrollBarThumbSize(sizeTotal,
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scrollbar->GetThumbPosition(),
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scrollbar->GetThumbSize(),
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range,
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&thumbStart,
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&thumbEnd);
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}
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// now compare with the thumb position
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coord -= sizeArrow;
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if ( coord < thumbStart )
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return wxHT_SCROLLBAR_BAR_1;
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else if ( coord > thumbEnd )
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return wxHT_SCROLLBAR_BAR_2;
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else
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return wxHT_SCROLLBAR_THUMB;
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}
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}
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wxCoord
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wxStdRenderer::ScrollbarToPixel(const wxScrollBar *scrollbar, int thumbPos)
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{
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int range = scrollbar->GetRange();
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if ( !range )
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{
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// the only valid position anyhow
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return 0;
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}
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if ( thumbPos == -1 )
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{
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// by default use the current thumb position
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thumbPos = scrollbar->GetThumbPosition();
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}
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const wxSize sizeArrow = GetScrollbarArrowSize();
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return (thumbPos*GetScrollbarSize(scrollbar)) / range
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+ (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x);
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}
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int wxStdRenderer::PixelToScrollbar(const wxScrollBar *scrollbar, wxCoord coord)
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{
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const wxSize sizeArrow = GetScrollbarArrowSize();
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return ((coord - (scrollbar->IsVertical() ? sizeArrow.y : sizeArrow.x)) *
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scrollbar->GetRange() ) / GetScrollbarSize(scrollbar);
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}
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#endif // wxUSE_SCROLLBAR
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// ----------------------------------------------------------------------------
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// status bar
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// ----------------------------------------------------------------------------
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