X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c86f1403c3737c07d58676a203f4707942684a01..4a2d030adfa836f6ada1830c9057170d053bcc64:/src/msw/region.cpp diff --git a/src/msw/region.cpp b/src/msw/region.cpp index dc55e46bff..d8523a072f 100644 --- a/src/msw/region.cpp +++ b/src/msw/region.cpp @@ -1,50 +1,57 @@ ///////////////////////////////////////////////////////////////////////////// -// File: 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" -#include - -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) - IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) +#ifndef WX_PRECOMP + #include "wx/gdicmn.h" #endif -//----------------------------------------------------------------------------- +#include "wx/msw/private.h" + +IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) +IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) + +// ---------------------------------------------------------------------------- // wxRegionRefData implementation -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxRegionRefData : public wxGDIRefData { +class WXDLLEXPORT wxRegionRefData : public wxGDIRefData +{ public: - wxRegionRefData(void) - { + wxRegionRefData() + { m_region = 0; - } + } - wxRegionRefData(const wxRegionRefData& data) - { -#if defined(__WIN32__) + wxRegionRefData(const wxRegionRefData& data) : wxGDIRefData() + { +#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); + ::GetRegionData(data.m_region, noBytes, rgnData); m_region = ::ExtCreateRegion(NULL, noBytes, rgnData); delete[] (char*) rgnData; #else @@ -52,30 +59,39 @@ public: ::GetRgnBox(data.m_region, &rect); m_region = ::CreateRectRgnIndirect(&rect); #endif - } + } - ~wxRegionRefData(void) - { - ::DeleteObject(m_region); + virtual ~wxRegionRefData() + { + ::DeleteObject(m_region); m_region = 0; - } + } + + HRGN m_region; - 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 -//----------------------------------------------------------------------------- +// ============================================================================ +// wxRegion implementation +// ============================================================================ -/*! - * Create an empty region. - */ -wxRegion::wxRegion(void) +// ---------------------------------------------------------------------------- +// ctors and dtor +// ---------------------------------------------------------------------------- + +wxRegion::wxRegion() { - m_refData = new wxRegionRefData; - M_REGION = ::CreateRectRgn(0, 0, 0, 0); + m_refData = NULL; } wxRegion::wxRegion(WXHRGN hRegion) @@ -84,7 +100,7 @@ wxRegion::wxRegion(WXHRGN hRegion) M_REGION = (HRGN) hRegion; } -wxRegion::wxRegion(long x, long y, long w, long h) +wxRegion::wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) { m_refData = new wxRegionRefData; M_REGION = ::CreateRectRgn(x, y, x + w, y + h); @@ -99,319 +115,349 @@ wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight) wxRegion::wxRegion(const wxRect& rect) { m_refData = new wxRegionRefData; - M_REGION = ::CreateRectRgn(rect.GetLeft(), rect.GetTop(), rect.GetRight(), rect.GetBottom()); + M_REGION = ::CreateRectRgn(rect.x, rect.y, rect.x + rect.width, rect.y + rect.height); +} + +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 } -/*! - * Destroy the region. - */ -wxRegion::~wxRegion(void) +wxRegion::~wxRegion() { // m_refData unrefed in ~wxObject } -//----------------------------------------------------------------------------- -//# Modify region -//----------------------------------------------------------------------------- +wxGDIRefData *wxRegion::CreateGDIRefData() const +{ + return new wxRegionRefData; +} -//! Clear current region -void wxRegion::Clear(void) +wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const { - UnRef(); + return new wxRegionRefData(*(wxRegionRefData *)data); } -//! Combine rectangle (x, y, w, h) with this. -bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op) +// ---------------------------------------------------------------------------- +// wxRegion operations +// ---------------------------------------------------------------------------- + +// Clear current region +void wxRegion::Clear() { - // 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); - - int mode = 0; - switch (op) + UnRef(); +} + +bool wxRegion::DoOffset(wxCoord x, wxCoord y) +{ + const HRGN hrgn = GetHrgn(); + wxCHECK_MSG( hrgn, false, wxT("invalid wxRegion") ); + + 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(hrgn, 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(long& x, long& y, long&w, long &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; - } -} + x = rect.left; + y = rect.top; + w = rect.right - rect.left; + h = rect.bottom - rect.top; -wxRect wxRegion::GetBox(void) const -{ - long x, y, w, h; - GetBox(x, y, w, h); - return wxRect(x, y, w, h); + return true; + } + else + { + x = y = w = h = 0; + + return false; + } } // Is region empty? -bool wxRegion::Empty(void) const +bool wxRegion::IsEmpty() const { - if (M_REGION == 0) - return TRUE; - long x, y, w, h; + 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(long x, long 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 -{ - if (!m_refData) - return wxOutRegion; +// ---------------------------------------------------------------------------- +// wxRegion hit testing +// ---------------------------------------------------------------------------- - if (::PtInRegion(M_REGION, (int) pt.x, (int) pt.y)) - return wxInRegion; - else +// Does the region contain the point (x,y)? +wxRegionContain wxRegion::DoContainsPoint(wxCoord x, wxCoord y) const +{ + if (!m_refData) 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(long x, long y, long w, long h) const +wxRegionContain wxRegion::DoContainsRect(const wxRect& rect) const { - if (!m_refData) - return wxOutRegion; + 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; + return ::RectInRegion(M_REGION, &rc) ? wxInRegion : wxOutRegion; } -// Does the region contain the rectangle rect -wxRegionContain wxRegion::Contains(const wxRect& rect) const +// Get internal region handle +WXHRGN wxRegion::GetHRGN() const { - if (!m_refData) - return wxOutRegion; - - long x, y, w, h; - x = rect.x; - y = rect.y; - w = rect.GetWidth(); - h = rect.GetHeight(); - return Contains(x, y, w, h); + return (WXHRGN)(m_refData ? M_REGION : 0); } -/////////////////////////////////////////////////////////////////////////////// -// // -// wxRegionIterator // -// // -/////////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// wxRegionIterator implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// wxRegionIterator ctors/dtor +// ---------------------------------------------------------------------------- -/*! - * Initialize empty iterator - */ -wxRegionIterator::wxRegionIterator(void) : m_current(0), m_numRects(0), m_rects(NULL) +void wxRegionIterator::Init() { + m_current = + m_numRects = 0; + + m_rects = NULL; } -wxRegionIterator::~wxRegionIterator(void) +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; - Reset(region); + Reset(region); } -/*! - * Reset iterator for a new /e region. - */ -void wxRegionIterator::Reset(const wxRegion& region) +wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& ri) { - m_current = 0; - m_region = region; + delete [] m_rects; - if (m_rects) - 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; + } - 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; + + wxDELETEA(m_rects); - if (m_region.Empty()) - m_numRects = 0; - else + 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); + ::GetRegionData(((wxRegionRefData*)region.m_refData)->m_region, noBytes, rgnData); RGNDATAHEADER* header = (RGNDATAHEADER*) rgnData; m_rects = new wxRect[header->nCount]; - RECT* rect = (RECT*) (rgnData + sizeof(RGNDATAHEADER)) ; + RECT* rect = (RECT*) ((char*)rgnData + sizeof(RGNDATAHEADER)); size_t i; for (i = 0; i < header->nCount; i++) { m_rects[i] = wxRect(rect->left, rect->top, rect->right - rect->left, rect->bottom - rect->top); - rect += sizeof(RECT); + rect ++; // Advances pointer by sizeof(RECT) } 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 ++ (void) +wxRegionIterator& wxRegionIterator::operator++() { - if (m_current < m_numRects) - ++m_current; + 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) { - if (m_current < m_numRects) - ++m_current; + wxRegionIterator tmp = *this; + if (m_current < m_numRects) + ++m_current; + + return tmp; } -long wxRegionIterator::GetX(void) const +// ---------------------------------------------------------------------------- +// 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; } -long wxRegionIterator::GetY(void) const +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; } -long wxRegionIterator::GetW(void) const +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; } -long wxRegionIterator::GetH(void) const +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; +}