X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/025763083a33cbab4e5de75657a6ca991c1e5149..d3e780ecdf69233c872d51216eedbc64a1b6db25:/src/msw/region.cpp diff --git a/src/msw/region.cpp b/src/msw/region.cpp index 22340bfb5b..4ff31ef0f7 100644 --- a/src/msw/region.cpp +++ b/src/msw/region.cpp @@ -1,16 +1,24 @@ ///////////////////////////////////////////////////////////////////////////// // Name: msw/region.cpp -// Purpose: Region handling for wxWindows/X11 -// Author: Markus Holzem +// 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 wxWindows team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "region.h" +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) + #pragma implementation "region.h" #endif // For compilers that support precompilation, includes "wx.h". @@ -20,18 +28,17 @@ #pragma hdrstop #endif -#include "wx/msw/region.h" +#include "wx/region.h" #include "wx/gdicmn.h" -#include "wx/window.h" #include "wx/msw/private.h" IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- // wxRegionRefData implementation -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- class WXDLLEXPORT wxRegionRefData : public wxGDIRefData { @@ -43,7 +50,7 @@ public: wxRegionRefData(const wxRegionRefData& data) { -#if defined(__WIN32__) && !defined(__WXMICROWIN__) +#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); @@ -56,24 +63,34 @@ public: #endif } - ~wxRegionRefData() + virtual ~wxRegionRefData() { ::DeleteObject(m_region); m_region = 0; } HRGN m_region; + +private: +// Cannot use +// DECLARE_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 -//----------------------------------------------------------------------------- +// ============================================================================ +// wxRegion implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// ctors and dtor +// ---------------------------------------------------------------------------- -/* - * Create an empty region. - */ wxRegion::wxRegion() { m_refData = (wxRegionRefData *)NULL; @@ -105,7 +122,7 @@ wxRegion::wxRegion(const wxRect& rect) wxRegion::wxRegion(size_t n, const wxPoint *points, int fillStyle) { -#ifdef __WXMICROWIN__ +#if defined(__WXMICROWIN__) || defined(__WXWINCE__) m_refData = NULL; M_REGION = NULL; #else @@ -129,14 +146,14 @@ wxObjectRefData *wxRegion::CreateRefData() const return new wxRegionRefData; } -wxObjectRefData *wxRegion::CloneRefData(wxObjectRefData *data) const +wxObjectRefData *wxRegion::CloneRefData(const wxObjectRefData *data) const { return new wxRegionRefData(*(wxRegionRefData *)data); } -//----------------------------------------------------------------------------- -// Modify region -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// wxRegion operations +// ---------------------------------------------------------------------------- // Clear current region void wxRegion::Clear() @@ -146,6 +163,8 @@ void wxRegion::Clear() bool wxRegion::Offset(wxCoord x, wxCoord y) { + wxCHECK_MSG( M_REGION, FALSE, _T("invalid wxRegion") ); + if ( !x && !y ) { // nothing to do @@ -164,67 +183,92 @@ bool wxRegion::Offset(wxCoord x, wxCoord y) return TRUE; } -// Combine rectangle (x, y, w, h) with this. -bool wxRegion::Combine(wxCoord x, wxCoord y, wxCoord width, wxCoord height, wxRegionOp op) +// combine another region with this one +bool wxRegion::Combine(const wxRegion& rgn, wxRegionOp op) { - AllocExclusive(); - - HRGN rectRegion = ::CreateRectRgn(x, y, x + width, y + height); - - 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( _T("unknown region operation") ); + // fall through + + case wxRGN_AND: + case wxRGN_DIFF: + // leave empty/invalid + return FALSE; + } } - - bool success = ::CombineRgn(M_REGION, M_REGION, rectRegion, mode) != ERROR; - if ( !success ) + else // we have a valid region { - wxLogLastError(_T("CombineRgn")); - } + AllocExclusive(); - ::DeleteObject(rectRegion); + int mode; + switch ( op ) + { + case wxRGN_AND: + mode = RGN_AND; + break; - return success; -} + case wxRGN_OR: + mode = RGN_OR; + break; -// Union /e region with this. -bool wxRegion::Combine(const wxRegion& region, wxRegionOp op) -{ - if (region.Empty()) - return FALSE; + case wxRGN_XOR: + mode = RGN_XOR; + break; - AllocExclusive(); + case wxRGN_DIFF: + mode = RGN_DIFF; + break; - int mode = 0; - switch (op) - { - 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 ; + default: + wxFAIL_MSG( _T("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(_T("CombineRgn")); + + return FALSE; + } } - return (ERROR != ::CombineRgn(M_REGION, M_REGION, ((wxRegionRefData*)region.m_refData)->m_region, mode)); + return TRUE; +} + +// Combine rectangle (x, y, w, h) with this. +bool wxRegion::Combine(wxCoord x, wxCoord y, + wxCoord width, wxCoord height, + wxRegionOp op) +{ + return Combine(wxRegion(x, y, width, height), op); } bool wxRegion::Combine(const wxRect& rect, wxRegionOp op) { - return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op); + return Combine(rect.GetLeft(), rect.GetTop(), + rect.GetWidth(), rect.GetHeight(), op); } -//----------------------------------------------------------------------------- -// Information on region -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// wxRegion bounding box +// ---------------------------------------------------------------------------- // Outer bounds of region void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const @@ -260,9 +304,9 @@ bool wxRegion::Empty() const return (w == 0) && (h == 0); } -//----------------------------------------------------------------------------- -// Tests -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// wxRegion hit testing +// ---------------------------------------------------------------------------- // Does the region contain the point (x,y)? wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y) const @@ -270,26 +314,18 @@ wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y) const if (!m_refData) return wxOutRegion; - if (::PtInRegion(M_REGION, (int) x, (int) y)) - return wxInRegion; - else - return wxOutRegion; + return ::PtInRegion(M_REGION, (int) x, (int) y) ? wxInRegion : wxOutRegion; } // Does the region contain the point pt? wxRegionContain wxRegion::Contains(const wxPoint& pt) const { - if (!m_refData) - return wxOutRegion; - - if (::PtInRegion(M_REGION, (int) pt.x, (int) pt.y)) - return wxInRegion; - else - return wxOutRegion; + return Contains(pt.x, pt.y); } // Does the region contain the rectangle (x, y, w, h)? -wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) const +wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y, + wxCoord w, wxCoord h) const { if (!m_refData) return wxOutRegion; @@ -300,56 +336,43 @@ wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) c rect.right = x + w; rect.bottom = y + h; - if (::RectInRegion(M_REGION, & rect)) - return wxInRegion; - else - return wxOutRegion; + return ::RectInRegion(M_REGION, &rect) ? wxInRegion : 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 Contains(rect.x, rect.y, rect.width, rect.height); } // 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; @@ -357,18 +380,42 @@ 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; + m_rects = NULL; + } if (m_region.Empty()) m_numRects = 0; @@ -383,7 +430,7 @@ 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++) { @@ -395,7 +442,7 @@ void wxRegionIterator::Reset(const wxRegion& region) m_numRects = header->nCount; delete[] (char*) rgnData; -#else +#else // Win16 RECT rect; ::GetRgnBox(((wxRegionRefData*)region.m_refData)->m_region, &rect); m_rects = new wxRect[1]; @@ -405,55 +452,56 @@ void wxRegionIterator::Reset(const wxRegion& region) m_rects[0].height = rect.bottom - rect.top; m_numRects = 1; -#endif +#endif // Win32/16 } } -/* - * 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, _T("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, _T("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, _T("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, _T("invalid wxRegionIterator") ); + + return m_rects[m_current].height; }