X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bc2e39e36625691d2418292f717db6c679a54a57..eea4d01c65f9b29baa1193db762b4c6b8144af24:/src/msw/region.cpp?ds=sidebyside diff --git a/src/msw/region.cpp b/src/msw/region.cpp index d2b0f83cf6..fed4cda96b 100644 --- a/src/msw/region.cpp +++ b/src/msw/region.cpp @@ -1,37 +1,43 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: msw/region.cpp -// Purpose: Region handling for wxWindows/X11 -// Author: Markus Holzem +// Name: src/msw/region.cpp +// Purpose: wxRegion implementation using Win32 API +// Author: Vadim Zeitlin // Modified by: // Created: Fri Oct 24 10:46:34 MET 1997 // RCS-ID: $Id$ -// Copyright: (c) 1997 Julian Smart and Markus Holzem +// Copyright: (c) 1997-2002 wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "region.h" -#endif +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif -#include "wx/msw/region.h" -#include "wx/gdicmn.h" +#include "wx/region.h" + +#ifndef WX_PRECOMP + #include "wx/gdicmn.h" +#endif -#include "wx/window.h" #include "wx/msw/private.h" - IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) - IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) +IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) +IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- // wxRegionRefData implementation -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- class WXDLLEXPORT wxRegionRefData : public wxGDIRefData { @@ -41,9 +47,9 @@ public: m_region = 0; } - wxRegionRefData(const wxRegionRefData& data) + wxRegionRefData(const wxRegionRefData& data) : wxGDIRefData() { -#if defined(__WIN32__) +#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__) DWORD noBytes = ::GetRegionData(data.m_region, 0, NULL); RGNDATA *rgnData = (RGNDATA*) new char[noBytes]; ::GetRegionData(data.m_region, noBytes, rgnData); @@ -56,28 +62,37 @@ public: #endif } - ~wxRegionRefData() + virtual ~wxRegionRefData() { ::DeleteObject(m_region); m_region = 0; } HRGN m_region; + +private: +// Cannot use +// wxDECLARE_NO_COPY_CLASS(wxRegionRefData); +// because copy constructor is explicitly declared above; +// but no copy assignment operator is defined, so declare +// it private to prevent the compiler from defining it: + wxRegionRefData& operator=(const wxRegionRefData&); }; #define M_REGION (((wxRegionRefData*)m_refData)->m_region) +#define M_REGION_OF(rgn) (((wxRegionRefData*)(rgn.m_refData))->m_region) + +// ============================================================================ +// wxRegion implementation +// ============================================================================ -//----------------------------------------------------------------------------- -// wxRegion -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// ctors and dtor +// ---------------------------------------------------------------------------- -/* - * Create an empty region. - */ wxRegion::wxRegion() { - m_refData = new wxRegionRefData; - M_REGION = ::CreateRectRgn(0, 0, 0, 0); + m_refData = NULL; } wxRegion::wxRegion(WXHRGN hRegion) @@ -104,17 +119,43 @@ wxRegion::wxRegion(const wxRect& rect) M_REGION = ::CreateRectRgn(rect.x, rect.y, rect.x + rect.width, rect.y + rect.height); } -/* - * Destroy the region. - */ +wxRegion::wxRegion(size_t n, const wxPoint *points, wxPolygonFillMode fillStyle) +{ +#if defined(__WXMICROWIN__) || defined(__WXWINCE__) + wxUnusedVar(n); + wxUnusedVar(points); + wxUnusedVar(fillStyle); + m_refData = NULL; + M_REGION = NULL; +#else + m_refData = new wxRegionRefData; + M_REGION = ::CreatePolygonRgn + ( + (POINT*)points, + n, + fillStyle == wxODDEVEN_RULE ? ALTERNATE : WINDING + ); +#endif +} + wxRegion::~wxRegion() { // m_refData unrefed in ~wxObject } -//----------------------------------------------------------------------------- -// Modify region -//----------------------------------------------------------------------------- +wxGDIRefData *wxRegion::CreateGDIRefData() const +{ + return new wxRegionRefData; +} + +wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const +{ + return new wxRegionRefData(*(wxRegionRefData *)data); +} + +// ---------------------------------------------------------------------------- +// wxRegion operations +// ---------------------------------------------------------------------------- // Clear current region void wxRegion::Clear() @@ -122,202 +163,190 @@ void wxRegion::Clear() UnRef(); } -// Combine rectangle (x, y, w, h) with this. -bool wxRegion::Combine(wxCoord x, wxCoord y, wxCoord width, wxCoord height, wxRegionOp op) +bool wxRegion::DoOffset(wxCoord x, wxCoord y) { - // Don't change shared data - if (!m_refData) { - m_refData = new wxRegionRefData(); - } else if (m_refData->GetRefCount() > 1) { - wxRegionRefData* ref = (wxRegionRefData*)m_refData; - UnRef(); - m_refData = new wxRegionRefData(*ref); - } - // If ref count is 1, that means it's 'ours' anyway so no action. - - HRGN rectRegion = ::CreateRectRgn(x, y, x + width, y + height); + wxCHECK_MSG( M_REGION, false, wxT("invalid wxRegion") ); - int mode = 0; - switch (op) + if ( !x && !y ) { - case wxRGN_AND: mode = RGN_AND; break ; - case wxRGN_OR: mode = RGN_OR; break ; - case wxRGN_XOR: mode = RGN_XOR; break ; - case wxRGN_DIFF: mode = RGN_DIFF; break ; - case wxRGN_COPY: - default: - mode = RGN_COPY; break ; + // nothing to do + return true; } - bool success = (ERROR != ::CombineRgn(M_REGION, M_REGION, rectRegion, mode)); + AllocExclusive(); - ::DeleteObject(rectRegion); + if ( ::OffsetRgn(GetHrgn(), x, y) == ERROR ) + { + wxLogLastError(wxT("OffsetRgn")); + + return false; + } - return success; + return true; } -// Union /e region with this. -bool wxRegion::Combine(const wxRegion& region, wxRegionOp op) +// combine another region with this one +bool wxRegion::DoCombine(const wxRegion& rgn, wxRegionOp op) { - if (region.Empty()) - return FALSE; - - // Don't change shared data - if (!m_refData) { - m_refData = new wxRegionRefData(); - } else if (m_refData->GetRefCount() > 1) { - wxRegionRefData* ref = (wxRegionRefData*)m_refData; - UnRef(); - m_refData = new wxRegionRefData(*ref); - } - - int mode = 0; - switch (op) + // we can't use the API functions if we don't have a valid region handle + if ( !m_refData ) { - case wxRGN_AND: mode = RGN_AND; break ; - case wxRGN_OR: mode = RGN_OR; break ; - case wxRGN_XOR: mode = RGN_XOR; break ; - case wxRGN_DIFF: mode = RGN_DIFF; break ; - case wxRGN_COPY: - default: - mode = RGN_COPY; break ; + // combining with an empty/invalid region works differently depending + // on the operation + switch ( op ) + { + case wxRGN_COPY: + case wxRGN_OR: + case wxRGN_XOR: + *this = rgn; + break; + + default: + wxFAIL_MSG( wxT("unknown region operation") ); + // fall through + + case wxRGN_AND: + case wxRGN_DIFF: + // leave empty/invalid + return false; + } } + else // we have a valid region + { + AllocExclusive(); - return (ERROR != ::CombineRgn(M_REGION, M_REGION, ((wxRegionRefData*)region.m_refData)->m_region, mode)); -} + int mode; + switch ( op ) + { + case wxRGN_AND: + mode = RGN_AND; + break; -bool wxRegion::Combine(const wxRect& rect, wxRegionOp op) -{ - return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op); + case wxRGN_OR: + mode = RGN_OR; + break; + + case wxRGN_XOR: + mode = RGN_XOR; + break; + + case wxRGN_DIFF: + mode = RGN_DIFF; + break; + + default: + wxFAIL_MSG( wxT("unknown region operation") ); + // fall through + + case wxRGN_COPY: + mode = RGN_COPY; + break; + } + + if ( ::CombineRgn(M_REGION, M_REGION, M_REGION_OF(rgn), mode) == ERROR ) + { + wxLogLastError(wxT("CombineRgn")); + + return false; + } + } + + return true; } -//----------------------------------------------------------------------------- -// Information on region -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// wxRegion bounding box +// ---------------------------------------------------------------------------- // Outer bounds of region -void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const +bool wxRegion::DoGetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const { - if (m_refData) { + if (m_refData) + { RECT rect; ::GetRgnBox(M_REGION, & rect); x = rect.left; y = rect.top; w = rect.right - rect.left; h = rect.bottom - rect.top; - } else { - x = y = w = h = 0; + + return true; } -} + else + { + x = y = w = h = 0; -wxRect wxRegion::GetBox() const -{ - wxCoord x, y, w, h; - GetBox(x, y, w, h); - return wxRect(x, y, w, h); + return false; + } } // Is region empty? -bool wxRegion::Empty() const +bool wxRegion::IsEmpty() const { - if (M_REGION == 0) - return TRUE; wxCoord x, y, w, h; GetBox(x, y, w, h); - return ((w == 0) && (h == 0)); + return (w == 0) && (h == 0); } -//----------------------------------------------------------------------------- -// Tests -//----------------------------------------------------------------------------- - -// Does the region contain the point (x,y)? -wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y) const +bool wxRegion::DoIsEqual(const wxRegion& region) const { - if (!m_refData) - return wxOutRegion; - - if (::PtInRegion(M_REGION, (int) x, (int) y)) - return wxInRegion; - else - return wxOutRegion; + return ::EqualRgn(M_REGION, M_REGION_OF(region)) != 0; } -// Does the region contain the point pt? -wxRegionContain wxRegion::Contains(const wxPoint& pt) const +// ---------------------------------------------------------------------------- +// wxRegion hit testing +// ---------------------------------------------------------------------------- + +// Does the region contain the point (x,y)? +wxRegionContain wxRegion::DoContainsPoint(wxCoord x, wxCoord y) const { if (!m_refData) return wxOutRegion; - if (::PtInRegion(M_REGION, (int) pt.x, (int) pt.y)) - return wxInRegion; - else - return wxOutRegion; + return ::PtInRegion(M_REGION, (int) x, (int) y) ? wxInRegion : wxOutRegion; } // Does the region contain the rectangle (x, y, w, h)? -wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) const +wxRegionContain wxRegion::DoContainsRect(const wxRect& rect) const { if (!m_refData) return wxOutRegion; - RECT rect; - rect.left = x; - rect.top = y; - rect.right = x + w; - rect.bottom = y + h; + RECT rc; + wxCopyRectToRECT(rect, rc); - if (::RectInRegion(M_REGION, & rect)) - return wxInRegion; - else - return wxOutRegion; -} - -// Does the region contain the rectangle rect -wxRegionContain wxRegion::Contains(const wxRect& rect) const -{ - if (!m_refData) - return wxOutRegion; - - wxCoord x, y, w, h; - x = rect.x; - y = rect.y; - w = rect.GetWidth(); - h = rect.GetHeight(); - return Contains(x, y, w, h); + return ::RectInRegion(M_REGION, &rc) ? wxInRegion : wxOutRegion; } // Get internal region handle WXHRGN wxRegion::GetHRGN() const { - if (!m_refData) - return (WXHRGN) 0; - return (WXHRGN) M_REGION; + return (WXHRGN)(m_refData ? M_REGION : 0); } -/////////////////////////////////////////////////////////////////////////////// -// // -// wxRegionIterator // -// // -/////////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// wxRegionIterator implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// wxRegionIterator ctors/dtor +// ---------------------------------------------------------------------------- -/* - * Initialize empty iterator - */ -wxRegionIterator::wxRegionIterator() : m_current(0), m_numRects(0), m_rects(NULL) +void wxRegionIterator::Init() { + m_current = + m_numRects = 0; + + m_rects = NULL; } wxRegionIterator::~wxRegionIterator() { - if (m_rects) - delete[] m_rects; + delete [] m_rects; } -/* - * Initialize iterator for region - */ +// Initialize iterator for region wxRegionIterator::wxRegionIterator(const wxRegion& region) { m_rects = NULL; @@ -325,24 +354,42 @@ wxRegionIterator::wxRegionIterator(const wxRegion& region) Reset(region); } -/* - * Reset iterator for a new /e region. - */ +wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& ri) +{ + delete [] m_rects; + + m_current = ri.m_current; + m_numRects = ri.m_numRects; + if ( m_numRects ) + { + m_rects = new wxRect[m_numRects]; + for ( long n = 0; n < m_numRects; n++ ) + m_rects[n] = ri.m_rects[n]; + } + else + { + m_rects = NULL; + } + + return *this; +} + +// ---------------------------------------------------------------------------- +// wxRegionIterator operations +// ---------------------------------------------------------------------------- + +// Reset iterator for a new region. void wxRegionIterator::Reset(const wxRegion& region) { m_current = 0; m_region = region; - if (m_rects) - delete[] m_rects; - - m_rects = NULL; + wxDELETEA(m_rects); if (m_region.Empty()) m_numRects = 0; else { -#if defined(__WIN32__) DWORD noBytes = ::GetRegionData(((wxRegionRefData*)region.m_refData)->m_region, 0, NULL); RGNDATA *rgnData = (RGNDATA*) new char[noBytes]; ::GetRegionData(((wxRegionRefData*)region.m_refData)->m_region, noBytes, rgnData); @@ -351,7 +398,7 @@ void wxRegionIterator::Reset(const wxRegion& region) m_rects = new wxRect[header->nCount]; - RECT* rect = (RECT*) ((char*)rgnData + sizeof(RGNDATAHEADER)) ; + RECT* rect = (RECT*) ((char*)rgnData + sizeof(RGNDATAHEADER)); size_t i; for (i = 0; i < header->nCount; i++) { @@ -363,65 +410,54 @@ void wxRegionIterator::Reset(const wxRegion& region) m_numRects = header->nCount; delete[] (char*) rgnData; -#else - RECT rect; - ::GetRgnBox(((wxRegionRefData*)region.m_refData)->m_region, &rect); - m_rects = new wxRect[1]; - m_rects[0].x = rect.left; - m_rects[0].y = rect.top; - m_rects[0].width = rect.right - rect.left; - m_rects[0].height = rect.bottom - rect.top; - - m_numRects = 1; -#endif } } -/* - * Increment iterator. The rectangle returned is the one after the - * incrementation. - */ -void wxRegionIterator::operator ++ () +wxRegionIterator& wxRegionIterator::operator++() { if (m_current < m_numRects) ++m_current; + + return *this; } -/* - * Increment iterator. The rectangle returned is the one before the - * incrementation. - */ -void wxRegionIterator::operator ++ (int) +wxRegionIterator wxRegionIterator::operator ++ (int) { + wxRegionIterator tmp = *this; if (m_current < m_numRects) ++m_current; + + return tmp; } +// ---------------------------------------------------------------------------- +// wxRegionIterator accessors +// ---------------------------------------------------------------------------- + wxCoord wxRegionIterator::GetX() const { - if (m_current < m_numRects) - return m_rects[m_current].x; - return 0; + wxCHECK_MSG( m_current < m_numRects, 0, wxT("invalid wxRegionIterator") ); + + return m_rects[m_current].x; } wxCoord wxRegionIterator::GetY() const { - if (m_current < m_numRects) - return m_rects[m_current].y; - return 0; + wxCHECK_MSG( m_current < m_numRects, 0, wxT("invalid wxRegionIterator") ); + + return m_rects[m_current].y; } wxCoord wxRegionIterator::GetW() const { - if (m_current < m_numRects) - return m_rects[m_current].width ; - return 0; + wxCHECK_MSG( m_current < m_numRects, 0, wxT("invalid wxRegionIterator") ); + + return m_rects[m_current].width; } wxCoord wxRegionIterator::GetH() const { - if (m_current < m_numRects) - return m_rects[m_current].height; - return 0; -} + wxCHECK_MSG( m_current < m_numRects, 0, wxT("invalid wxRegionIterator") ); + return m_rects[m_current].height; +}