X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6236b8b477e113922c63db0c1413150bb1986ebf..69659fd770f615210efac4b4fa741b3ad6223616:/src/univ/scrolbar.cpp diff --git a/src/univ/scrolbar.cpp b/src/univ/scrolbar.cpp index e898958f94..ac0c110b0a 100644 --- a/src/univ/scrolbar.cpp +++ b/src/univ/scrolbar.cpp @@ -146,7 +146,7 @@ bool wxScrollBar::Create(wxWindow *parent, if ( !wxControl::Create(parent, id, pos, size, style, validator, name) ) return false; - SetBestSize(size); + SetInitialSize(size); // override the cursor of the target window (if any) SetCursor(wxCURSOR_ARROW); @@ -300,7 +300,7 @@ wxSize wxScrollBar::DoGetBestClientSize() const wxScrollArrows::Arrow wxScrollBar::HitTestArrow(const wxPoint& pt) const { - switch ( m_renderer->HitTestScrollbar(this, pt) ) + switch ( HitTestBar(pt) ) { case wxHT_SCROLLBAR_ARROW_LINE_1: return wxScrollArrows::Arrow_First; @@ -313,6 +313,259 @@ wxScrollArrows::Arrow wxScrollBar::HitTestArrow(const wxPoint& pt) const } } +wxHitTest wxScrollBar::HitTestBar(const wxPoint& pt) const +{ + // we only need to work with either x or y coord depending on the + // orientation, choose one (but still check the other one to verify if the + // mouse is in the window at all) + const wxSize sizeArrowSB = m_renderer->GetScrollbarArrowSize(); + + wxCoord coord, sizeArrow, sizeTotal; + wxSize size = GetSize(); + if ( GetWindowStyle() & wxVERTICAL ) + { + if ( pt.x < 0 || pt.x > size.x ) + return wxHT_NOWHERE; + + coord = pt.y; + sizeArrow = sizeArrowSB.y; + sizeTotal = size.y; + } + else // horizontal + { + if ( pt.y < 0 || pt.y > size.y ) + return wxHT_NOWHERE; + + coord = pt.x; + sizeArrow = sizeArrowSB.x; + sizeTotal = size.x; + } + + // test for the arrows first as it's faster + if ( coord < 0 || coord > sizeTotal ) + { + return wxHT_NOWHERE; + } + else if ( coord < sizeArrow ) + { + return wxHT_SCROLLBAR_ARROW_LINE_1; + } + else if ( coord > sizeTotal - sizeArrow ) + { + return wxHT_SCROLLBAR_ARROW_LINE_2; + } + else + { + // calculate the thumb position in pixels + sizeTotal -= 2*sizeArrow; + wxCoord thumbStart, thumbEnd; + int range = GetRange(); + if ( !range ) + { + // clicking the scrollbar without range has no effect + return wxHT_NOWHERE; + } + else + { + GetScrollBarThumbSize(sizeTotal, + GetThumbPosition(), + GetThumbSize(), + range, + &thumbStart, + &thumbEnd); + } + + // now compare with the thumb position + coord -= sizeArrow; + if ( coord < thumbStart ) + return wxHT_SCROLLBAR_BAR_1; + else if ( coord > thumbEnd ) + return wxHT_SCROLLBAR_BAR_2; + else + return wxHT_SCROLLBAR_THUMB; + } +} + +/* static */ +void wxScrollBar::GetScrollBarThumbSize(wxCoord length, + int thumbPos, + int thumbSize, + int range, + wxCoord *thumbStart, + wxCoord *thumbEnd) +{ + // the thumb can't be made less than this number of pixels + static const wxCoord thumbMinWidth = 8; // FIXME: should be configurable + + *thumbStart = (length*thumbPos) / range; + *thumbEnd = (length*(thumbPos + thumbSize)) / range; + + if ( *thumbEnd - *thumbStart < thumbMinWidth ) + { + // adjust the end if possible + if ( *thumbStart <= length - thumbMinWidth ) + { + // yes, just make it wider + *thumbEnd = *thumbStart + thumbMinWidth; + } + else // it is at the bottom of the scrollbar + { + // so move it a bit up + *thumbStart = length - thumbMinWidth; + *thumbEnd = length; + } + } +} + +wxRect wxScrollBar::GetScrollbarRect(wxScrollBar::Element elem, + int thumbPos) const +{ + if ( thumbPos == -1 ) + { + thumbPos = GetThumbPosition(); + } + + const wxSize sizeArrow = m_renderer->GetScrollbarArrowSize(); + + wxSize sizeTotal = GetClientSize(); + wxCoord *start, *width; + wxCoord length, arrow; + wxRect rect; + if ( IsVertical() ) + { + rect.x = 0; + rect.width = sizeTotal.x; + length = sizeTotal.y; + start = &rect.y; + width = &rect.height; + arrow = sizeArrow.y; + } + else // horizontal + { + rect.y = 0; + rect.height = sizeTotal.y; + length = sizeTotal.x; + start = &rect.x; + width = &rect.width; + arrow = sizeArrow.x; + } + + switch ( elem ) + { + case wxScrollBar::Element_Arrow_Line_1: + *start = 0; + *width = arrow; + break; + + case wxScrollBar::Element_Arrow_Line_2: + *start = length - arrow; + *width = arrow; + break; + + case wxScrollBar::Element_Arrow_Page_1: + case wxScrollBar::Element_Arrow_Page_2: + // we don't have them at all + break; + + case wxScrollBar::Element_Thumb: + case wxScrollBar::Element_Bar_1: + case wxScrollBar::Element_Bar_2: + // we need to calculate the thumb position - do it + { + length -= 2*arrow; + wxCoord thumbStart, thumbEnd; + int range = GetRange(); + if ( !range ) + { + thumbStart = + thumbEnd = 0; + } + else + { + GetScrollBarThumbSize(length, + thumbPos, + GetThumbSize(), + range, + &thumbStart, + &thumbEnd); + } + + if ( elem == wxScrollBar::Element_Thumb ) + { + *start = thumbStart; + *width = thumbEnd - thumbStart; + } + else if ( elem == wxScrollBar::Element_Bar_1 ) + { + *start = 0; + *width = thumbStart; + } + else // elem == wxScrollBar::Element_Bar_2 + { + *start = thumbEnd; + *width = length - thumbEnd; + } + + // everything is relative to the start of the shaft so far + *start += arrow; + } + break; + + case wxScrollBar::Element_Max: + default: + wxFAIL_MSG( _T("unknown scrollbar element") ); + } + + return rect; +} + +wxCoord wxScrollBar::GetScrollbarSize() const +{ + const wxSize sizeArrowSB = m_renderer->GetScrollbarArrowSize(); + + wxCoord sizeArrow, sizeTotal; + if ( GetWindowStyle() & wxVERTICAL ) + { + sizeArrow = sizeArrowSB.y; + sizeTotal = GetSize().y; + } + else // horizontal + { + sizeArrow = sizeArrowSB.x; + sizeTotal = GetSize().x; + } + + return sizeTotal - 2*sizeArrow; +} + + +wxCoord wxScrollBar::ScrollbarToPixel(int thumbPos) +{ + int range = GetRange(); + if ( !range ) + { + // the only valid position anyhow + return 0; + } + + if ( thumbPos == -1 ) + { + // by default use the current thumb position + thumbPos = GetThumbPosition(); + } + + const wxSize sizeArrow = m_renderer->GetScrollbarArrowSize(); + return (thumbPos * GetScrollbarSize()) / range + + (IsVertical() ? sizeArrow.y : sizeArrow.x); +} + +int wxScrollBar::PixelToScrollbar(wxCoord coord) +{ + const wxSize sizeArrow = m_renderer->GetScrollbarArrowSize(); + return ((coord - (IsVertical() ? sizeArrow.y : sizeArrow.x)) * + GetRange() ) / GetScrollbarSize(); +} + // ---------------------------------------------------------------------------- // drawing // ---------------------------------------------------------------------------- @@ -331,7 +584,7 @@ void wxScrollBar::UpdateThumb() { if ( m_elementsState[n] & wxCONTROL_DIRTY ) { - wxRect rect = GetRenderer()->GetScrollbarRect(this, (Element)n); + wxRect rect = GetScrollbarRect((Element)n); if ( rect.width && rect.height ) { @@ -365,9 +618,7 @@ void wxScrollBar::UpdateThumb() } #else // efficient version: only repaint the area occupied by // the thumb previously - we can't do better than this - rect = GetRenderer()->GetScrollbarRect(this, - Element_Thumb, - m_thumbPosOld); + rect = GetScrollbarRect(Element_Thumb, m_thumbPosOld); #endif // 0/1 } @@ -706,7 +957,7 @@ void wxStdScrollBarInputHandler::HandleThumbMove(wxScrollBar *scrollbar, const wxMouseEvent& event) { int thumbPos = GetMouseCoord(scrollbar, event) - m_ofsMouse; - thumbPos = m_renderer->PixelToScrollbar(scrollbar, thumbPos); + thumbPos = scrollbar->PixelToScrollbar(thumbPos); scrollbar->PerformAction(wxACTION_SCROLL_THUMB_MOVE, thumbPos); } @@ -750,11 +1001,7 @@ bool wxStdScrollBarInputHandler::HandleMouse(wxInputConsumer *consumer, { // determine which part of the window mouse is in wxScrollBar *scrollbar = wxStaticCast(consumer->GetInputWindow(), wxScrollBar); - wxHitTest ht = m_renderer->HitTestScrollbar - ( - scrollbar, - event.GetPosition() - ); + wxHitTest ht = scrollbar->HitTestBar(event.GetPosition()); // when the mouse is pressed on any scrollbar element, we capture it // and hold capture until the same mouse button is released @@ -792,7 +1039,7 @@ bool wxStdScrollBarInputHandler::HandleMouse(wxInputConsumer *consumer, case wxHT_SCROLLBAR_THUMB: consumer->PerformAction(wxACTION_SCROLL_THUMB_DRAG); m_ofsMouse = GetMouseCoord(scrollbar, event) - - m_renderer->ScrollbarToPixel(scrollbar); + scrollbar->ScrollbarToPixel(); // fall through: there is no immediate action @@ -875,11 +1122,7 @@ bool wxStdScrollBarInputHandler::HandleMouseMove(wxInputConsumer *consumer, if ( event.Dragging() ) { - wxHitTest ht = m_renderer->HitTestScrollbar - ( - scrollbar, - event.GetPosition() - ); + wxHitTest ht = scrollbar->HitTestBar(event.GetPosition()); if ( ht == m_htLast ) { // nothing changed