#include "wx/bitmap.h"
#include "wx/dcmemory.h"
#include "wx/log.h"
+ #include "wx/math.h"
#include "wx/icon.h"
#include "wx/dcprint.h"
#include "wx/module.h"
#include <string.h>
#include "wx/msw/private/dc.h"
+#include "wx/private/textmeasure.h"
using namespace wxMSWImpl;
// constants
// ---------------------------------------------------------------------------
-static const int VIEWPORT_EXTENT = 1000;
+// The device space in Win32 GDI measures 2^27*2^27 , so we use 2^27-1 as the
+// maximal possible view port extent.
+static const int VIEWPORT_EXTENT = 134217727;
// ROPs which don't have standard names (see "Ternary Raster Operations" in the
// MSDN docs for how this and other numbers in wxDC::Blit() are obtained)
IMPLEMENT_DYNAMIC_CLASS(wxGDIDLLsCleanupModule, wxModule)
+namespace
+{
+
+#if wxUSE_DC_TRANSFORM_MATRIX
+
+// Class used to dynamically load world transform related API functions.
+class GdiWorldTransformFuncs
+{
+public:
+ static bool IsOk()
+ {
+ if ( !ms_worldTransformSymbolsLoaded )
+ LoadWorldTransformSymbols();
+
+ return ms_pfnSetGraphicsMode &&
+ ms_pfnSetWorldTransform &&
+ ms_pfnGetWorldTransform &&
+ ms_pfnModifyWorldTransform;
+ }
+
+ typedef int (WINAPI *SetGraphicsMode_t)(HDC, int);
+ static SetGraphicsMode_t SetGraphicsMode()
+ {
+ if ( !ms_worldTransformSymbolsLoaded )
+ LoadWorldTransformSymbols();
+
+ return ms_pfnSetGraphicsMode;
+ }
+
+ typedef BOOL (WINAPI *SetWorldTransform_t)(HDC, const XFORM *);
+ static SetWorldTransform_t SetWorldTransform()
+ {
+ if ( !ms_worldTransformSymbolsLoaded )
+ LoadWorldTransformSymbols();
+
+ return ms_pfnSetWorldTransform;
+ }
+
+ typedef BOOL (WINAPI *GetWorldTransform_t)(HDC, LPXFORM);
+ static GetWorldTransform_t GetWorldTransform()
+ {
+ if ( !ms_worldTransformSymbolsLoaded )
+ LoadWorldTransformSymbols();
+
+ return ms_pfnGetWorldTransform;
+ }
+
+ typedef BOOL (WINAPI *ModifyWorldTransform_t)(HDC, const XFORM *, DWORD);
+ static ModifyWorldTransform_t ModifyWorldTransform()
+ {
+ if ( !ms_worldTransformSymbolsLoaded )
+ LoadWorldTransformSymbols();
+
+ return ms_pfnModifyWorldTransform;
+ }
+
+private:
+ static void LoadWorldTransformSymbols()
+ {
+ wxDynamicLibrary dll(wxT("gdi32.dll"));
+
+ wxDL_INIT_FUNC(ms_pfn, SetGraphicsMode, dll);
+ wxDL_INIT_FUNC(ms_pfn, SetWorldTransform, dll);
+ wxDL_INIT_FUNC(ms_pfn, GetWorldTransform, dll);
+ wxDL_INIT_FUNC(ms_pfn, ModifyWorldTransform, dll);
+
+ ms_worldTransformSymbolsLoaded = true;
+ }
+
+ static SetGraphicsMode_t ms_pfnSetGraphicsMode;
+ static SetWorldTransform_t ms_pfnSetWorldTransform;
+ static GetWorldTransform_t ms_pfnGetWorldTransform;
+ static ModifyWorldTransform_t ms_pfnModifyWorldTransform;
+
+ static bool ms_worldTransformSymbolsLoaded;
+};
+
+GdiWorldTransformFuncs::SetGraphicsMode_t
+ GdiWorldTransformFuncs::ms_pfnSetGraphicsMode = NULL;
+GdiWorldTransformFuncs::SetWorldTransform_t
+ GdiWorldTransformFuncs::ms_pfnSetWorldTransform = NULL;
+GdiWorldTransformFuncs::GetWorldTransform_t
+ GdiWorldTransformFuncs::ms_pfnGetWorldTransform = NULL;
+GdiWorldTransformFuncs::ModifyWorldTransform_t
+ GdiWorldTransformFuncs::ms_pfnModifyWorldTransform = NULL;
+
+bool GdiWorldTransformFuncs::ms_worldTransformSymbolsLoaded = false;
+
+#endif // wxUSE_DC_TRANSFORM_MATRIX
+
+} // anonymous namespace
+
#endif // wxUSE_DYNLIB_CLASS
// ===========================================================================
lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
bezier_pos++;
-#if !wxUSE_STL
+#if !wxUSE_STD_CONTAINERS
while ((node = node->GetNext()) != NULL)
#else
while ((node = node->GetNext()))
-#endif // !wxUSE_STL
+#endif // !wxUSE_STD_CONTAINERS
{
p = (wxPoint *)node->GetData();
x1 = x2;
}
#endif // __WXMICROWIN__
- HFONT hfontOld;
- if ( font )
- {
- wxASSERT_MSG( font->IsOk(), wxT("invalid font in wxMSWDCImpl::GetTextExtent") );
-
- hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
- }
- else // don't change the font
- {
- hfontOld = 0;
- }
-
- SIZE sizeRect;
- const size_t len = string.length();
- if ( !::GetTextExtentPoint32(GetHdc(), string.wx_str(), len, &sizeRect) )
- {
- wxLogLastError(wxT("GetTextExtentPoint32()"));
- }
-
-#if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400)
- // the result computed by GetTextExtentPoint32() may be too small as it
- // accounts for under/overhang of the first/last character while we want
- // just the bounding rect for this string so adjust the width as needed
- // (using API not available in 2002 SDKs of WinCE)
- if ( len > 0 )
- {
- ABC width;
- const wxChar chFirst = *string.begin();
- if ( ::GetCharABCWidths(GetHdc(), chFirst, chFirst, &width) )
- {
- if ( width.abcA < 0 )
- sizeRect.cx -= width.abcA;
-
- if ( len > 1 )
- {
- const wxChar chLast = *string.rbegin();
- ::GetCharABCWidths(GetHdc(), chLast, chLast, &width);
- }
- //else: we already have the width of the last character
-
- if ( width.abcC < 0 )
- sizeRect.cx -= width.abcC;
- }
- //else: GetCharABCWidths() failed, not a TrueType font?
- }
-#endif // !defined(_WIN32_WCE) || (_WIN32_WCE >= 400)
-
- if (x)
- *x = sizeRect.cx;
- if (y)
- *y = sizeRect.cy;
-
- if ( descent || externalLeading )
- {
- DoGetFontMetrics(NULL, NULL, descent, NULL, externalLeading, NULL);
- }
+ wxASSERT_MSG( !font || font->IsOk(), wxT("invalid font in wxMSWDCImpl::GetTextExtent") );
- if ( hfontOld )
- {
- ::SelectObject(GetHdc(), hfontOld);
- }
+ wxTextMeasure txm(GetOwner(), font);
+ txm.GetTextExtent(string, x, y, descent, externalLeading);
}
-// Each element of the array will be the width of the string up to and
-// including the coresoponding character in text.
-
bool wxMSWDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
{
- static int maxLenText = -1;
- static int maxWidth = -1;
- int fit = 0;
- SIZE sz = {0,0};
- int stlen = text.length();
+ wxTextMeasure txm(GetOwner(), NULL); // don't change the font
+ return txm.GetPartialTextExtents(text, widths, 1.0);
+}
- if (maxLenText == -1)
- {
- // Win9x and WinNT+ have different limits
- int version = wxGetOsVersion();
- maxLenText = version == wxOS_WINDOWS_NT ? 65535 : 8192;
- maxWidth = version == wxOS_WINDOWS_NT ? INT_MAX : 32767;
- }
+namespace
+{
- widths.Empty();
- widths.Add(0, stlen); // fill the array with zeros
- if (stlen == 0)
- return true;
+void ApplyEffectiveScale(double scale, int sign, int *device, int *logical)
+{
+ // To reduce rounding errors as much as possible, we try to use the largest
+ // possible extent (2^27-1) for the device space but we must also avoid
+ // overflowing the int range i.e. ensure that logical extents are less than
+ // 2^31 in magnitude. So the minimal scale we can use is 1/16 as for
+ // anything smaller VIEWPORT_EXTENT/scale would overflow the int range.
+ static const double MIN_LOGICAL_SCALE = 1./16;
- if (!::GetTextExtentExPoint(GetHdc(),
- text.c_str(), // string to check
- wxMin(stlen, maxLenText),
- maxWidth,
- &fit, // [out] count of chars
- // that will fit
- &widths[0], // array to fill
- &sz))
- {
- // API failed
- wxLogLastError(wxT("GetTextExtentExPoint"));
- return false;
+ double physExtent = VIEWPORT_EXTENT;
+ if ( scale < MIN_LOGICAL_SCALE )
+ {
+ physExtent *= scale/MIN_LOGICAL_SCALE;
+ scale = MIN_LOGICAL_SCALE;
}
- return true;
+ *device = wxRound(physExtent);
+ *logical = sign*wxRound(VIEWPORT_EXTENT/scale);
}
+} // anonymous namespace
+
void wxMSWDCImpl::RealizeScaleAndOrigin()
{
// although it may seem wasteful to always use MM_ANISOTROPIC here instead
#ifndef __WXWINCE__
::SetMapMode(GetHdc(), MM_ANISOTROPIC);
- int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
- height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
+ // wxWidgets API assumes that the coordinate space is "infinite" (i.e. only
+ // limited by 2^32 range of the integer coordinates) but in MSW API we must
+ // actually specify the extents that we use so compute them here.
+
+ int devExtX, devExtY, // Viewport, i.e. device space, extents.
+ logExtX, logExtY; // Window, i.e. logical coordinate space, extents.
+
+ ApplyEffectiveScale(m_scaleX, m_signX, &devExtX, &logExtX);
+ ApplyEffectiveScale(m_scaleY, m_signY, &devExtY, &logExtY);
- ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
- ::SetWindowExtEx(GetHdc(), width, height, NULL);
+ ::SetViewportExtEx(GetHdc(), devExtX, devExtY, NULL);
+ ::SetWindowExtEx(GetHdc(), logExtX, logExtY, NULL);
::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL);
::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL);
::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
}
+// ----------------------------------------------------------------------------
+// Transform matrix
+// ----------------------------------------------------------------------------
+
+#if wxUSE_DC_TRANSFORM_MATRIX
+
+bool wxMSWDCImpl::CanUseTransformMatrix() const
+{
+ return GdiWorldTransformFuncs::IsOk();
+}
+
+bool wxMSWDCImpl::SetTransformMatrix(const wxAffineMatrix2D &matrix)
+{
+ if ( !GdiWorldTransformFuncs::IsOk() )
+ return false;
+
+ if ( matrix.IsIdentity() )
+ {
+ ResetTransformMatrix();
+ return true;
+ }
+
+ if ( !GdiWorldTransformFuncs::SetGraphicsMode()(GetHdc(), GM_ADVANCED) )
+ {
+ wxLogLastError(wxT("SetGraphicsMode"));
+ return false;
+ }
+
+ wxMatrix2D mat;
+ wxPoint2DDouble tr;
+ matrix.Get(&mat, &tr);
+
+ XFORM xform;
+ xform.eM11 = mat.m_11;
+ xform.eM12 = mat.m_12;
+ xform.eM21 = mat.m_21;
+ xform.eM22 = mat.m_22;
+ xform.eDx = tr.m_x;
+ xform.eDy = tr.m_y;
+
+ if ( !GdiWorldTransformFuncs::SetWorldTransform()(GetHdc(), &xform) )
+ {
+ wxLogLastError(wxT("SetWorldTransform"));
+ return false;
+ }
+
+ return true;
+}
+
+wxAffineMatrix2D wxMSWDCImpl::GetTransformMatrix() const
+{
+ wxAffineMatrix2D transform;
+
+ if ( !GdiWorldTransformFuncs::IsOk() )
+ return transform;
+
+ XFORM xform;
+ if ( !GdiWorldTransformFuncs::GetWorldTransform()(GetHdc(), &xform) )
+ {
+ wxLogLastError(wxT("GetWorldTransform"));
+ return transform;
+ }
+
+ wxMatrix2D m(xform.eM11, xform.eM12, xform.eM21, xform.eM22);
+ wxPoint2DDouble p(xform.eDx, xform.eDy);
+ transform.Set(m, p);
+
+ return transform;
+}
+
+void wxMSWDCImpl::ResetTransformMatrix()
+{
+ if ( GdiWorldTransformFuncs::IsOk() )
+ {
+ GdiWorldTransformFuncs::ModifyWorldTransform()(GetHdc(), NULL, MWT_IDENTITY);
+ GdiWorldTransformFuncs::SetGraphicsMode()(GetHdc(), GM_COMPATIBLE);
+ }
+}
+
+#endif // wxUSE_DC_TRANSFORM_MATRIX
+
// ---------------------------------------------------------------------------
// bit blit
// ---------------------------------------------------------------------------
// than the wxWidgets fall-back implementation. So we need
// to be able to switch this on and off at runtime.
#if wxUSE_SYSTEM_OPTIONS
- if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0)
+ static bool s_maskBltAllowed = wxSystemOptions::GetOptionInt("no-maskblt") == 0;
+ if ( s_maskBltAllowed )
#endif
{
if ( dstWidth == srcWidth && dstHeight == srcHeight )
{
SET_STRETCH_BLT_MODE(GetHdc());
+ // Unlike all the other functions used here (i.e. AlphaBlt(),
+ // MaskBlt(), BitBlt() and StretchBlt()), StretchDIBits() does
+ // not take into account the source DC logical coordinates
+ // automatically as it doesn't even work with the source HDC.
+ // So do this manually to ensure that the coordinates are
+ // interpreted in the same way here as in all the other cases.
+ xsrc = source->LogicalToDeviceX(xsrc);
+ ysrc = source->LogicalToDeviceY(ysrc);
+ srcWidth = source->LogicalToDeviceXRel(srcWidth);
+ srcHeight = source->LogicalToDeviceYRel(srcHeight);
+
// Figure out what co-ordinate system we're supposed to specify
// ysrc in.
const LONG hDIB = ds.dsBmih.biHeight;
projects / wxWidgets.git / blobdiff