/////////////////////////////////////////////////////////////////////////////
-// Name: dc.cpp
-// Purpose: wxDC class
+// Name: src/msw/dc.cpp
+// Purpose: wxDC class for MSW port
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
+// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// headers
// ---------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "dc.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#endif
#ifndef WX_PRECOMP
+ #include "wx/msw/wrapcdlg.h"
+ #include "wx/image.h"
#include "wx/window.h"
- #include "wx/dc.h"
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/app.h"
#include "wx/dcmemory.h"
#include "wx/log.h"
#include "wx/icon.h"
+ #include "wx/dcprint.h"
+ #include "wx/module.h"
#endif
+#include "wx/msw/dc.h"
#include "wx/sysopt.h"
-#include "wx/dcprint.h"
-#include "wx/module.h"
+#include "wx/dynlib.h"
+
+#ifdef wxHAVE_RAW_BITMAP
+#include "wx/rawbmp.h"
+#endif
#include <string.h>
-#include <math.h>
-#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
+#ifndef __WIN32__
+ #include <print.h>
+#endif
-#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
- #include <commdlg.h>
+#ifndef AC_SRC_ALPHA
+ #define AC_SRC_ALPHA 1
#endif
-#ifndef __WIN32__
- #include <print.h>
+#ifndef LAYOUT_RTL
+ #define LAYOUT_RTL 1
+#endif
+
+/* Quaternary raster codes */
+#ifndef MAKEROP4
+#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore))
+#endif
+
+// apparently with MicroWindows it is possible that HDC is 0 so we have to
+// check for this ourselves
+#ifdef __WXMICROWIN__
+ #define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return;
+ #define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x;
+#else
+ #define WXMICROWIN_CHECK_HDC
+ #define WXMICROWIN_CHECK_HDC_RET(x)
#endif
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
+IMPLEMENT_ABSTRACT_CLASS(wxMSWDCImpl, wxDCImpl)
// ---------------------------------------------------------------------------
// constants
static const int VIEWPORT_EXTENT = 1000;
-static const int MM_POINTS = 9;
-static const int MM_METRIC = 10;
-
-// usually this is defined in math.h
-#ifndef M_PI
- static const double M_PI = 3.14159265358979323846;
-#endif // M_PI
-
// 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)
#define DSTCOPY 0x00AA0029 // a.k.a. NOP operation
coordinates used.
*/
-// logical to device
-#define XLOG2DEV(x) (x)
-#define YLOG2DEV(y) (y)
-
-// device to logical
-#define XDEV2LOG(x) (x)
-#define YDEV2LOG(y) (y)
+#ifdef __WXWINCE__
+ #define XLOG2DEV(x) ((x-m_logicalOriginX)*m_signX)
+ #define YLOG2DEV(y) ((y-m_logicalOriginY)*m_signY)
+ #define XDEV2LOG(x) ((x)*m_signX+m_logicalOriginX)
+ #define YDEV2LOG(y) ((y)*m_signY+m_logicalOriginY)
+#else
+ #define XLOG2DEV(x) (x)
+ #define YLOG2DEV(y) (y)
+ #define XDEV2LOG(x) (x)
+ #define YDEV2LOG(y) (y)
+#endif
// ---------------------------------------------------------------------------
// private functions
// convert degrees to radians
static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+// call AlphaBlend() to blit contents of hdcSrc to hdcDst using alpha
+//
+// NB: bmpSrc is the bitmap selected in hdcSrc, it is not really needed
+// to pass it to this function but as we already have it at the point
+// of call anyhow we do
+//
+// return true if we could draw the bitmap in one way or the other, false
+// otherwise
+static bool AlphaBlt(HDC hdcDst,
+ int x, int y, int dstWidth, int dstHeight,
+ int srcX, int srcY,
+ int srcWidth, int srcHeight,
+ HDC hdcSrc,
+ const wxBitmap& bmp);
+
+#ifdef wxHAVE_RAW_BITMAP
+
+// our (limited) AlphaBlend() replacement for Windows versions not providing it
+static void
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst,
+ int dstWidth, int dstHeight,
+ int srcX, int srcY,
+ int srcWidth, int srcHeight,
+ const wxBitmap& bmpSrc);
+
+#endif // wxHAVE_RAW_BITMAP
+
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
class wxColourChanger
{
public:
- wxColourChanger(wxDC& dc);
+ wxColourChanger(wxMSWDCImpl& dc);
~wxColourChanger();
private:
- wxDC& m_dc;
+ wxMSWDCImpl& m_dc;
COLORREF m_colFgOld, m_colBgOld;
bool m_changed;
+
+ DECLARE_NO_COPY_CLASS(wxColourChanger)
+};
+
+// this class saves the old stretch blit mode during its life time
+class StretchBltModeChanger
+{
+public:
+ StretchBltModeChanger(HDC hdc,
+ int WXUNUSED_IN_WINCE(mode))
+ : m_hdc(hdc)
+ {
+#ifndef __WXWINCE__
+ m_modeOld = ::SetStretchBltMode(m_hdc, mode);
+ if ( !m_modeOld )
+ wxLogLastError(_T("SetStretchBltMode"));
+#endif
+ }
+
+ ~StretchBltModeChanger()
+ {
+#ifndef __WXWINCE__
+ if ( !::SetStretchBltMode(m_hdc, m_modeOld) )
+ wxLogLastError(_T("SetStretchBltMode"));
+#endif
+ }
+
+private:
+ const HDC m_hdc;
+
+ int m_modeOld;
+
+ DECLARE_NO_COPY_CLASS(StretchBltModeChanger)
+};
+
+#if wxUSE_DYNLIB_CLASS
+
+// helper class to cache dynamically loaded libraries and not attempt reloading
+// them if it fails
+class wxOnceOnlyDLLLoader
+{
+public:
+ // ctor argument must be a literal string as we don't make a copy of it!
+ wxOnceOnlyDLLLoader(const wxChar *dllName)
+ : m_dllName(dllName)
+ {
+ }
+
+
+ // return the symbol with the given name or NULL if the DLL not loaded
+ // or symbol not present
+ void *GetSymbol(const wxChar *name)
+ {
+ // we're prepared to handle errors here
+ wxLogNull noLog;
+
+ if ( m_dllName )
+ {
+ m_dll.Load(m_dllName);
+
+ // reset the name whether we succeeded or failed so that we don't
+ // try again the next time
+ m_dllName = NULL;
+ }
+
+ return m_dll.IsLoaded() ? m_dll.GetSymbol(name) : NULL;
+ }
+
+ void Unload()
+ {
+ if ( m_dll.IsLoaded() )
+ {
+ m_dll.Unload();
+ }
+ }
+
+private:
+ wxDynamicLibrary m_dll;
+ const wxChar *m_dllName;
+};
+
+static wxOnceOnlyDLLLoader wxMSIMG32DLL(_T("msimg32"));
+
+// we must ensure that DLLs are unloaded before the static objects cleanup time
+// because we may hit the notorious DllMain() dead lock in this case if wx is
+// used as a DLL (attempting to unload another DLL from inside DllMain() hangs
+// under Windows because it tries to reacquire the same lock)
+class wxGDIDLLsCleanupModule : public wxModule
+{
+public:
+ virtual bool OnInit() { return true; }
+ virtual void OnExit() { wxMSIMG32DLL.Unload(); }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxGDIDLLsCleanupModule)
};
+IMPLEMENT_DYNAMIC_CLASS(wxGDIDLLsCleanupModule, wxModule)
+
+#endif // wxUSE_DYNLIB_CLASS
+
// ===========================================================================
// implementation
// ===========================================================================
// wxColourChanger
// ----------------------------------------------------------------------------
-wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc)
+wxColourChanger::wxColourChanger(wxMSWDCImpl& dc) : m_dc(dc)
{
const wxBrush& brush = dc.GetBrush();
- if ( brush.Ok() && brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
+ if ( brush.IsOk() && brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
{
HDC hdc = GetHdcOf(dc);
m_colFgOld = ::GetTextColor(hdc);
m_colBgOld = ::GetBkColor(hdc);
- // note that Windows convention is opposite to wxWindows one, this is
+ // note that Windows convention is opposite to wxWidgets one, this is
// why text colour becomes the background one and vice versa
const wxColour& colFg = dc.GetTextForeground();
- if ( colFg.Ok() )
+ if ( colFg.IsOk() )
{
::SetBkColor(hdc, colFg.GetPixel());
}
const wxColour& colBg = dc.GetTextBackground();
- if ( colBg.Ok() )
+ if ( colBg.IsOk() )
{
::SetTextColor(hdc, colBg.GetPixel());
}
: OPAQUE);
// flag which telsl us to undo changes in the dtor
- m_changed = TRUE;
+ m_changed = true;
}
else
{
// nothing done, nothing to undo
- m_changed = FALSE;
+ m_changed = false;
}
}
}
// ---------------------------------------------------------------------------
-// wxDC
+// wxMSWDCImpl
// ---------------------------------------------------------------------------
-// Default constructor
-wxDC::wxDC()
+wxMSWDCImpl::wxMSWDCImpl( wxDC *owner, WXHDC hDC ) :
+ wxDCImpl( owner )
{
- m_canvas = NULL;
-
- m_oldBitmap = 0;
- m_oldPen = 0;
- m_oldBrush = 0;
- m_oldFont = 0;
-#if wxUSE_PALETTE
- m_oldPalette = 0;
-#endif // wxUSE_PALETTE
-
- m_bOwnsDC = FALSE;
- m_hDC = 0;
+ Init();
+ m_hDC = hDC;
}
-wxDC::~wxDC()
+wxMSWDCImpl::~wxMSWDCImpl()
{
if ( m_hDC != 0 )
{
}
else // we don't own our HDC
{
- if (m_canvas)
+ if (m_window)
{
- ::ReleaseDC(GetHwndOf(m_canvas), GetHdc());
+ ::ReleaseDC(GetHwndOf(m_window), GetHdc());
}
else
{
// This will select current objects out of the DC,
// which is what you have to do before deleting the
// DC.
-void wxDC::SelectOldObjects(WXHDC dc)
+void wxMSWDCImpl::SelectOldObjects(WXHDC dc)
{
if (dc)
{
if (m_oldBitmap)
{
::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
- if (m_selectedBitmap.Ok())
+#ifdef __WXDEBUG__
+ if (m_selectedBitmap.IsOk())
{
m_selectedBitmap.SetSelectedInto(NULL);
}
+#endif
}
m_oldBitmap = 0;
if (m_oldPen)
// clipping
// ---------------------------------------------------------------------------
-void wxDC::UpdateClipBox()
+void wxMSWDCImpl::UpdateClipBox()
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
RECT rect;
::GetClipBox(GetHdc(), &rect);
m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
}
+void
+wxMSWDCImpl::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
+{
+ // check if we should try to retrieve the clipping region possibly not set
+ // by our SetClippingRegion() but preset by Windows:this can only happen
+ // when we're associated with an existing HDC usign SetHDC(), see there
+ if ( m_clipping && !m_clipX1 && !m_clipX2 )
+ {
+ wxMSWDCImpl *self = wxConstCast(this, wxMSWDCImpl);
+ self->UpdateClipBox();
+
+ if ( !m_clipX1 && !m_clipX2 )
+ self->m_clipping = false;
+ }
+
+ wxDCImpl::DoGetClippingBox(x, y, w, h);
+}
+
// common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion()
-void wxDC::SetClippingHrgn(WXHRGN hrgn)
+void wxMSWDCImpl::SetClippingHrgn(WXHRGN hrgn)
{
wxCHECK_RET( hrgn, wxT("invalid clipping region") );
-#ifdef __WXMICROWIN__
- if (!GetHdc()) return;
-#endif // __WXMICROWIN__
+ WXMICROWIN_CHECK_HDC
// note that we combine the new clipping region with the existing one: this
// is compatible with what the other ports do and is the documented
// behaviour now (starting with 2.3.3)
-#ifdef __WIN16__
+#if defined(__WXWINCE__)
RECT rectClip;
if ( !::GetClipBox(GetHdc(), &rectClip) )
return;
+ // GetClipBox returns logical coordinates, so transform to device
+ rectClip.left = LogicalToDeviceX(rectClip.left);
+ rectClip.top = LogicalToDeviceY(rectClip.top);
+ rectClip.right = LogicalToDeviceX(rectClip.right);
+ rectClip.bottom = LogicalToDeviceY(rectClip.bottom);
+
HRGN hrgnDest = ::CreateRectRgn(0, 0, 0, 0);
HRGN hrgnClipOld = ::CreateRectRgn(rectClip.left, rectClip.top,
rectClip.right, rectClip.bottom);
::DeleteObject(hrgnClipOld);
::DeleteObject(hrgnDest);
-#else // Win32
+#else // !WinCE
if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR )
{
wxLogLastError(_T("ExtSelectClipRgn"));
return;
}
-#endif // Win16/32
+#endif // WinCE/!WinCE
- m_clipping = TRUE;
+ m_clipping = true;
UpdateClipBox();
}
-void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
+void wxMSWDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
// the region coords are always the device ones, so do the translation
// manually
}
}
-void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
+void wxMSWDCImpl::DoSetClippingRegionAsRegion(const wxRegion& region)
{
SetClippingHrgn(region.GetHRGN());
}
-void wxDC::DestroyClippingRegion()
+void wxMSWDCImpl::DestroyClippingRegion()
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
if (m_clipping && m_hDC)
{
+#if 1
+ // On a PocketPC device (not necessarily emulator), resetting
+ // the clip region as per the old method causes bad display
+ // problems. In fact setting a null region is probably OK
+ // on desktop WIN32 also, since the WIN32 docs imply that the user
+ // clipping region is independent from the paint clipping region.
+ ::SelectClipRgn(GetHdc(), 0);
+#else
// TODO: this should restore the previous clipping region,
// so that OnPaint processing works correctly, and the update
// clipping region doesn't get destroyed after the first
HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
::SelectClipRgn(GetHdc(), rgn);
::DeleteObject(rgn);
+#endif
}
- m_clipping = FALSE;
+ wxDCImpl::DestroyClippingRegion();
}
// ---------------------------------------------------------------------------
// query capabilities
// ---------------------------------------------------------------------------
-bool wxDC::CanDrawBitmap() const
+bool wxMSWDCImpl::CanDrawBitmap() const
{
- return TRUE;
+ return true;
}
-bool wxDC::CanGetTextExtent() const
+bool wxMSWDCImpl::CanGetTextExtent() const
{
#ifdef __WXMICROWIN__
// TODO Extend MicroWindows' GetDeviceCaps function
- return TRUE;
+ return true;
#else
// What sort of display is it?
int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
#endif
}
-int wxDC::GetDepth() const
+int wxMSWDCImpl::GetDepth() const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return 16;
-#endif
+ WXMICROWIN_CHECK_HDC_RET(16)
return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
}
// drawing
// ---------------------------------------------------------------------------
-void wxDC::Clear()
+void wxMSWDCImpl::Clear()
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
RECT rect;
- if ( m_canvas )
+ if (m_window)
{
- GetClientRect((HWND) m_canvas->GetHWND(), &rect);
+ GetClientRect((HWND) m_window->GetHWND(), &rect);
}
else
{
// No, I think we should simply ignore this if printing on e.g.
// a printer DC.
- // wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") );
- if (!m_selectedBitmap.Ok())
+ // wxCHECK_RET( m_selectedBitmap.IsOk(), wxT("this DC can't be cleared") );
+ if (!m_selectedBitmap.IsOk())
return;
- rect.left = 0; rect.top = 0;
- rect.right = m_selectedBitmap.GetWidth();
- rect.bottom = m_selectedBitmap.GetHeight();
+ rect.left = -m_deviceOriginX; rect.top = -m_deviceOriginY;
+ rect.right = m_selectedBitmap.GetWidth()-m_deviceOriginX;
+ rect.bottom = m_selectedBitmap.GetHeight()-m_deviceOriginY;
}
+#ifndef __WXWINCE__
(void) ::SetMapMode(GetHdc(), MM_TEXT);
+#endif
DWORD colour = ::GetBkColor(GetHdc());
HBRUSH brush = ::CreateSolidBrush(colour);
::FillRect(GetHdc(), &rect, brush);
::DeleteObject(brush);
- int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
- height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
-
- ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
- ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
- ::SetWindowExtEx(GetHdc(), width, height, NULL);
- ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
- ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
+ RealizeScaleAndOrigin();
}
-void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
+bool wxMSWDCImpl::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x),
+ wxCoord WXUNUSED_IN_WINCE(y),
+ const wxColour& WXUNUSED_IN_WINCE(col),
+ int WXUNUSED_IN_WINCE(style))
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+#ifdef __WXWINCE__
+ return false;
+#else
+ WXMICROWIN_CHECK_HDC_RET(false)
- if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
+ bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
col.GetPixel(),
style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
- : FLOODFILLBORDER) )
+ : FLOODFILLBORDER) ) ;
+ if (!success)
{
// quoting from the MSDN docs:
//
}
CalcBoundingBox(x, y);
+
+ return success;
+#endif
}
-bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
+bool wxMSWDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return FALSE;
-#endif
+ WXMICROWIN_CHECK_HDC_RET(false)
- wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") );
+ wxCHECK_MSG( col, false, _T("NULL colour parameter in wxMSWDCImpl::GetPixel") );
// get the color of the pixel
COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
wxRGBToColour(*col, pixelcolor);
- return TRUE;
+ return true;
}
-void wxDC::DoCrossHair(wxCoord x, wxCoord y)
+void wxMSWDCImpl::DoCrossHair(wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
wxCoord x1 = x-VIEWPORT_EXTENT;
wxCoord y1 = y-VIEWPORT_EXTENT;
wxCoord x2 = x+VIEWPORT_EXTENT;
wxCoord y2 = y+VIEWPORT_EXTENT;
- (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL);
- (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y));
-
- (void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL);
- (void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2));
+ wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y));
+ wxDrawLine(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), XLOG2DEV(x), YLOG2DEV(y2));
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
}
-void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
+void wxMSWDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL);
- (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2));
+ wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2));
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
// and ending at (x2, y2)
-void wxDC::DoDrawArc(wxCoord x1, wxCoord y1,
+void wxMSWDCImpl::DoDrawArc(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord xc, wxCoord yc)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+#ifdef __WXWINCE__
+ // Slower emulation since WinCE doesn't support Pie and Arc
+ double r = sqrt( (x1-xc)*(x1-xc) + (y1-yc)*(y1-yc) );
+ double sa = acos((x1-xc)/r)/M_PI*180; // between 0 and 180
+ if( y1>yc ) sa = -sa; // below center
+ double ea = atan2(yc-y2, x2-xc)/M_PI*180;
+ DoDrawEllipticArcRot( xc-r, yc-r, 2*r, 2*r, sa, ea );
+#else
+
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
// treat the special case of full circle separately
if ( x1 == x2 && y1 == y2 )
{
- DrawEllipse(xc - r, yc - r, 2*r, 2*r);
+ GetOwner()->DrawEllipse(xc - r, yc - r, 2*r, 2*r);
return;
}
wxCoord xxx2 = (wxCoord) (xxc+ray);
wxCoord yyy2 = (wxCoord) (yyc+ray);
- if ( m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT )
+ if ( m_brush.IsOk() && m_brush.GetStyle() != wxTRANSPARENT )
{
// Have to add 1 to bottom-right corner of rectangle
// to make semi-circles look right (crooked line otherwise).
CalcBoundingBox(xc - r, yc - r);
CalcBoundingBox(xc + r, yc + r);
+#endif
}
-void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
+void wxMSWDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1,
wxCoord width, wxCoord height)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
-
+ // cases when we don't have DrawFrameControl()
+#if defined(__SYMANTEC__) || defined(__WXMICROWIN__)
+ return wxDCBase::DoDrawCheckMark(x1, y1, width, height);
+#else // normal case
wxCoord x2 = x1 + width,
y2 = y1 + height;
-#if defined(__WIN32__) && !defined(__SC__) && !defined(__WXMICROWIN__)
RECT rect;
rect.left = x1;
rect.top = y1;
rect.right = x2;
rect.bottom = y2;
+#ifdef __WXWINCE__
+ DrawFrameControl(GetHdc(), &rect, DFC_BUTTON, DFCS_BUTTONCHECK | DFCS_CHECKED);
+#else
DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK);
-#else // Win16
- // In WIN16, draw a cross
- HPEN blackPen = ::CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
- HPEN whiteBrush = (HPEN)::GetStockObject(WHITE_BRUSH);
- HPEN hPenOld = (HPEN)::SelectObject(GetHdc(), blackPen);
- HPEN hBrushOld = (HPEN)::SelectObject(GetHdc(), whiteBrush);
- ::SetROP2(GetHdc(), R2_COPYPEN);
- Rectangle(GetHdc(), x1, y1, x2, y2);
- MoveToEx(GetHdc(), x1, y1, NULL);
- LineTo(GetHdc(), x2, y2);
- MoveToEx(GetHdc(), x2, y1, NULL);
- LineTo(GetHdc(), x1, y2);
- ::SelectObject(GetHdc(), hPenOld);
- ::SelectObject(GetHdc(), hBrushOld);
- ::DeleteObject(blackPen);
-#endif // Win32/16
+#endif
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
+#endif // Microwin/Normal
}
-void wxDC::DoDrawPoint(wxCoord x, wxCoord y)
+void wxMSWDCImpl::DoDrawPoint(wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
COLORREF color = 0x00ffffff;
- if (m_pen.Ok())
+ if (m_pen.IsOk())
{
color = m_pen.GetColour().GetPixel();
}
CalcBoundingBox(x, y);
}
-void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
+void wxMSWDCImpl::DoDrawPolygon(int n,
+ wxPoint points[],
+ wxCoord xoffset,
+ wxCoord yoffset,
+ int WXUNUSED_IN_WINCE(fillStyle))
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
}
+#ifndef __WXWINCE__
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+#endif
(void)Polygon(GetHdc(), cpoints, n);
+#ifndef __WXWINCE__
SetPolyFillMode(GetHdc(),prev);
+#endif
delete[] cpoints;
}
else
for (i = 0; i < n; i++)
CalcBoundingBox(points[i].x, points[i].y);
+#ifndef __WXWINCE__
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+#endif
(void)Polygon(GetHdc(), (POINT*) points, n);
+#ifndef __WXWINCE__
SetPolyFillMode(GetHdc(),prev);
+#endif
}
}
-void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
+void
+wxMSWDCImpl::DoDrawPolyPolygon(int n,
+ int count[],
+ wxPoint points[],
+ wxCoord xoffset,
+ wxCoord yoffset,
+ int fillStyle)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
+#ifdef __WXWINCE__
+ wxDCImpl::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle);
+#else
+ WXMICROWIN_CHECK_HDC
+
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
+ int i, cnt;
+ for (i = cnt = 0; i < n; i++)
+ cnt += count[i];
+
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
+ {
+ POINT *cpoints = new POINT[cnt];
+ for (i = 0; i < cnt; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
+
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+#ifndef __WXWINCE__
+ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+#endif
+ (void)PolyPolygon(GetHdc(), cpoints, count, n);
+#ifndef __WXWINCE__
+ SetPolyFillMode(GetHdc(),prev);
+#endif
+ delete[] cpoints;
+ }
+ else
+ {
+ for (i = 0; i < cnt; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
+
+#ifndef __WXWINCE__
+ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+#endif
+ (void)PolyPolygon(GetHdc(), (POINT*) points, count, n);
+#ifndef __WXWINCE__
+ SetPolyFillMode(GetHdc(),prev);
#endif
+ }
+#endif
+ // __WXWINCE__
+}
+
+void wxMSWDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
+{
+ WXMICROWIN_CHECK_HDC
// Do things less efficiently if we have offsets
if (xoffset != 0 || yoffset != 0)
}
}
-void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+void wxMSWDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
wxCoord x2 = x + width;
wxCoord y2 = y + height;
- if ((m_logicalFunction == wxCOPY) && (m_pen.GetStyle() == wxTRANSPARENT))
- {
- RECT rect;
- rect.left = XLOG2DEV(x);
- rect.top = YLOG2DEV(y);
- rect.right = XLOG2DEV(x2);
- rect.bottom = YLOG2DEV(y2);
- (void)FillRect(GetHdc(), &rect, (HBRUSH)m_brush.GetResourceHandle() );
- }
- else
- {
- // Windows draws the filled rectangles without outline (i.e. drawn with a
- // transparent pen) one pixel smaller in both directions and we want them
- // to have the same size regardless of which pen is used - adjust
-
- // I wonder if this shouldn´t be done after the LOG2DEV() conversions. RR.
- if ( m_pen.GetStyle() == wxTRANSPARENT )
- {
- x2++;
- y2++;
- }
+ wxCoord x2dev = XLOG2DEV(x2),
+ y2dev = YLOG2DEV(y2);
- (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
+ // Windows (but not Windows CE) draws the filled rectangles without outline
+ // (i.e. drawn with a transparent pen) one pixel smaller in both directions
+ // and we want them to have the same size regardless of which pen is used
+#ifndef __WXWINCE__
+ if ( m_pen.GetStyle() == wxTRANSPARENT )
+ {
+ x2dev++;
+ y2dev++;
}
+#endif // !__WXWINCE__
+ (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), x2dev, y2dev);
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
}
-void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
+void wxMSWDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
if (radius < 0.0)
{
- double smallest = 0.0;
- if (width < height)
- smallest = width;
- else
- smallest = height;
+ double smallest = (width < height) ? width : height;
radius = (- radius * smallest);
}
CalcBoundingBox(x2, y2);
}
-void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+void wxMSWDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
CalcBoundingBox(x2, y2);
}
-// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
-void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
+#if wxUSE_SPLINES
+void wxMSWDCImpl::DoDrawSpline(const wxPointList *points)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
+#ifdef __WXWINCE__
+ // WinCE does not support ::PolyBezier so use generic version
+ wxDCImpl::DoDrawSpline(points);
+#else
+ // quadratic b-spline to cubic bezier spline conversion
+ //
+ // quadratic spline with control points P0,P1,P2
+ // P(s) = P0*(1-s)^2 + P1*2*(1-s)*s + P2*s^2
+ //
+ // bezier spline with control points B0,B1,B2,B3
+ // B(s) = B0*(1-s)^3 + B1*3*(1-s)^2*s + B2*3*(1-s)*s^2 + B3*s^3
+ //
+ // control points of bezier spline calculated from b-spline
+ // B0 = P0
+ // B1 = (2*P1 + P0)/3
+ // B2 = (2*P1 + P2)/3
+ // B3 = P2
+
+ WXMICROWIN_CHECK_HDC
+
+ wxASSERT_MSG( points, wxT("NULL pointer to spline points?") );
+
+ const size_t n_points = points->GetCount();
+ wxASSERT_MSG( n_points > 2 , wxT("incomplete list of spline points?") );
+
+ const size_t n_bezier_points = n_points * 3 + 1;
+ POINT *lppt = (POINT *)malloc(n_bezier_points*sizeof(POINT));
+ size_t bezier_pos = 0;
+ wxCoord x1, y1, x2, y2, cx1, cy1, cx4, cy4;
+
+ wxPointList::compatibility_iterator node = points->GetFirst();
+ wxPoint *p = node->GetData();
+ lppt[ bezier_pos ].x = x1 = p->x;
+ lppt[ bezier_pos ].y = y1 = p->y;
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+ node = node->GetNext();
+ p = node->GetData();
+
+ x2 = p->x;
+ y2 = p->y;
+ cx1 = ( x1 + x2 ) / 2;
+ cy1 = ( y1 + y2 ) / 2;
+ lppt[ bezier_pos ].x = XLOG2DEV(cx1);
+ lppt[ bezier_pos ].y = YLOG2DEV(cy1);
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+#if !wxUSE_STL
+ while ((node = node->GetNext()) != NULL)
+#else
+ while ((node = node->GetNext()))
+#endif // !wxUSE_STL
+ {
+ p = (wxPoint *)node->GetData();
+ x1 = x2;
+ y1 = y2;
+ x2 = p->x;
+ y2 = p->y;
+ cx4 = (x1 + x2) / 2;
+ cy4 = (y1 + y2) / 2;
+ // B0 is B3 of previous segment
+ // B1:
+ lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx1)/3);
+ lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy1)/3);
+ bezier_pos++;
+ // B2:
+ lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx4)/3);
+ lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy4)/3);
+ bezier_pos++;
+ // B3:
+ lppt[ bezier_pos ].x = XLOG2DEV(cx4);
+ lppt[ bezier_pos ].y = YLOG2DEV(cy4);
+ bezier_pos++;
+ cx1 = cx4;
+ cy1 = cy4;
+ }
+
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+ lppt[ bezier_pos ].x = XLOG2DEV(x2);
+ lppt[ bezier_pos ].y = YLOG2DEV(y2);
+ bezier_pos++;
+ lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
+ bezier_pos++;
+
+ ::PolyBezier( GetHdc(), lppt, bezier_pos );
+
+ free(lppt);
#endif
+}
+#endif
+
+// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
+void wxMSWDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
+{
+#ifdef __WXWINCE__
+ DoDrawEllipticArcRot( x, y, w, h, sa, ea );
+#else
+
+ WXMICROWIN_CHECK_HDC
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
rx2 += (int)(100.0 * abs(w) * cos(ea));
ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));
+ // Swap start and end positions if the end angle is less than the start angle.
+ if (ea < sa) {
+ int temp;
+ temp = rx2;
+ rx2 = rx1;
+ rx1 = temp;
+ temp = ry2;
+ ry2 = ry1;
+ ry1 = temp;
+ }
+
// draw pie with NULL_PEN first and then outline otherwise a line is
// drawn from the start and end points to the centre
HPEN hpenOld = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
CalcBoundingBox(x, y);
CalcBoundingBox(x2, y2);
+#endif
}
-void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
+void wxMSWDCImpl::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") );
+ wxCHECK_RET( icon.IsOk(), wxT("invalid icon in DrawIcon") );
#ifdef __WIN32__
::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL);
CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight());
}
-void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
+void wxMSWDCImpl::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") );
+ wxCHECK_RET( bmp.IsOk(), _T("invalid bitmap in wxMSWDCImpl::DrawBitmap") );
int width = bmp.GetWidth(),
height = bmp.GetHeight();
HPALETTE oldPal = 0;
#endif // wxUSE_PALETTE
+ if ( bmp.HasAlpha() )
+ {
+ MemoryHDC hdcMem;
+ SelectInHDC select(hdcMem, GetHbitmapOf(bmp));
+
+ if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, width, height, hdcMem, bmp) )
+ return;
+ }
+
if ( useMask )
{
wxMask *mask = bmp.GetMask();
{
// don't give assert here because this would break existing
// programs - just silently ignore useMask parameter
- useMask = FALSE;
+ useMask = false;
}
}
if ( useMask )
// use MaskBlt() with ROP which doesn't do anything to dst in the mask
// points
// On some systems, MaskBlt succeeds yet is much much slower
- // than the wxWindows fall-back implementation. So we need
+ // than the wxWidgets fall-back implementation. So we need
// to be able to switch this on and off at runtime.
- bool ok = FALSE;
+ bool ok = false;
#if wxUSE_SYSTEM_OPTIONS
if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0)
#endif
wxPalette *pal = bmp.GetPalette();
if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
{
- oldPal = ::SelectPalette(hdcMem, GetHpaletteOf(pal), FALSE);
+ oldPal = ::SelectPalette(hdcMem, GetHpaletteOf(*pal), FALSE);
::RealizePalette(hdcMem);
}
#endif // wxUSE_PALETTE
if ( !ok )
#endif // Win32
{
- // Rather than reproduce wxDC::Blit, let's do it at the wxWin API
+ // Rather than reproduce wxMSWDCImpl::Blit, let's do it at the wxWin API
// level
wxMemoryDC memDC;
- memDC.SelectObject(bmp);
- Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
+ memDC.SelectObjectAsSource(bmp);
+
+ GetOwner()->Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
memDC.SelectObject(wxNullBitmap);
}
COLORREF old_textground = ::GetTextColor(GetHdc());
COLORREF old_background = ::GetBkColor(GetHdc());
- if (m_textForegroundColour.Ok())
+ if (m_textForegroundColour.IsOk())
{
::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
}
- if (m_textBackgroundColour.Ok())
+ if (m_textBackgroundColour.IsOk())
{
::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
}
wxPalette *pal = bmp.GetPalette();
if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
{
- oldPal = ::SelectPalette(memdc, GetHpaletteOf(pal), FALSE);
+ oldPal = ::SelectPalette(memdc, GetHpaletteOf(*pal), FALSE);
::RealizePalette(memdc);
}
#endif // wxUSE_PALETTE
}
}
-void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
+void wxMSWDCImpl::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
DrawAnyText(text, x, y);
CalcBoundingBox(x, y);
wxCoord w, h;
- GetTextExtent(text, &w, &h);
+ GetOwner()->GetTextExtent(text, &w, &h);
CalcBoundingBox(x + w, y + h);
}
-void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
+void wxMSWDCImpl::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
// prepare for drawing the text
- if ( m_textForegroundColour.Ok() )
+ if ( m_textForegroundColour.IsOk() )
SetTextColor(GetHdc(), m_textForegroundColour.GetPixel());
DWORD old_background = 0;
- if ( m_textBackgroundColour.Ok() )
+ if ( m_textBackgroundColour.IsOk() )
{
old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
}
SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
: OPAQUE);
+#ifdef __WXWINCE__
+ if ( ::ExtTextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), 0, NULL,
+ text.c_str(), text.length(), NULL) == 0 )
+ {
+ wxLogLastError(wxT("TextOut"));
+ }
+#else
if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
text.c_str(), text.length()) == 0 )
{
wxLogLastError(wxT("TextOut"));
}
+#endif
// restore the old parameters (text foreground colour may be left because
// it never is set to anything else, but background should remain
// transparent even if we just drew an opaque string)
- if ( m_textBackgroundColour.Ok() )
+ if ( m_textBackgroundColour.IsOk() )
(void)SetBkColor(GetHdc(), old_background);
SetBkMode(GetHdc(), TRANSPARENT);
}
-void wxDC::DoDrawRotatedText(const wxString& text,
+void wxMSWDCImpl::DoDrawRotatedText(const wxString& text,
wxCoord x, wxCoord y,
double angle)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
// we test that we have some font because otherwise we should still use the
// "else" part below to avoid that DrawRotatedText(angle = 180) and
// DrawRotatedText(angle = 0) use different fonts (we can't use the default
// font for drawing rotated fonts unfortunately)
- if ( (angle == 0.0) && m_font.Ok() )
+ if ( (angle == 0.0) && m_font.IsOk() )
{
DoDrawText(text, x, y);
}
// NB: don't take DEFAULT_GUI_FONT (a.k.a. wxSYS_DEFAULT_GUI_FONT)
// because it's not TrueType and so can't have non zero
// orientation/escapement under Win9x
- wxFont font = m_font.Ok() ? m_font : *wxSWISS_FONT;
+ wxFont font = m_font.IsOk() ? m_font : *wxSWISS_FONT;
HFONT hfont = (HFONT)font.GetResourceHandle();
LOGFONT lf;
if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
// containing the text to it (simpler and probably not slower than
// determining which of them is really topmost/leftmost/...)
wxCoord w, h;
- GetTextExtent(text, &w, &h);
+ GetOwner()->GetTextExtent(text, &w, &h);
double rad = DegToRad(angle);
// "upper left" and "upper right"
CalcBoundingBox(x, y);
- CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
+ CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
// "bottom left" and "bottom right"
x += (wxCoord)(h*sin(rad));
y += (wxCoord)(h*cos(rad));
CalcBoundingBox(x, y);
- CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
+ CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
}
#endif
}
#if wxUSE_PALETTE
-void wxDC::DoSelectPalette(bool realize)
+void wxMSWDCImpl::DoSelectPalette(bool realize)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
// Set the old object temporarily, in case the assignment deletes an object
// that's not yet selected out.
m_oldPalette = 0;
}
- if (m_palette.Ok() && m_palette.GetHPALETTE())
+ if ( m_palette.IsOk() )
{
- HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), FALSE);
+ HPALETTE oldPal = ::SelectPalette(GetHdc(),
+ GetHpaletteOf(m_palette),
+ false);
if (!m_oldPalette)
m_oldPalette = (WXHPALETTE) oldPal;
if (realize)
::RealizePalette(GetHdc());
}
-
-
}
-void wxDC::SetPalette(const wxPalette& palette)
+void wxMSWDCImpl::SetPalette(const wxPalette& palette)
{
- if (palette.Ok()) {
+ if ( palette.IsOk() )
+ {
m_palette = palette;
DoSelectPalette(true);
- }
+ }
}
-void wxDC::InitializePalette()
+void wxMSWDCImpl::InitializePalette()
{
- if (wxDisplayDepth() <= 8) {
+ if ( wxDisplayDepth() <= 8 )
+ {
// look for any window or parent that has a custom palette. If any has
// one then we need to use it in drawing operations
- wxWindow *win = m_canvas;
- while (!win->HasCustomPalette() && win->GetParent()) win = win->GetParent();
- if (win->HasCustomPalette()) {
+ wxWindow *win = m_window->GetAncestorWithCustomPalette();
+
+ m_hasCustomPalette = win && win->HasCustomPalette();
+ if ( m_hasCustomPalette )
+ {
m_palette = win->GetPalette();
- m_custompalette = true;
+
// turn on MSW translation for this palette
DoSelectPalette();
- }
- else
- m_custompalette = false;
}
+ }
}
+
#endif // wxUSE_PALETTE
-void wxDC::SetFont(const wxFont& the_font)
-{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+// SetFont/Pen/Brush() really ask to be implemented as a single template
+// function... but doing it is not worth breaking OpenWatcom build <sigh>
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldFont)
- {
- ::SelectObject(GetHdc(), (HFONT) m_oldFont);
- m_oldFont = 0;
- }
+void wxMSWDCImpl::SetFont(const wxFont& font)
+{
+ WXMICROWIN_CHECK_HDC
- m_font = the_font;
+ if ( font == m_font )
+ return;
- if (!the_font.Ok())
+ if ( font.IsOk() )
{
- if (m_oldFont)
- ::SelectObject(GetHdc(), (HFONT) m_oldFont);
- m_oldFont = 0;
- }
+ HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font));
+ if ( hfont == HGDI_ERROR )
+ {
+ wxLogLastError(_T("SelectObject(font)"));
+ }
+ else // selected ok
+ {
+ if ( !m_oldFont )
+ m_oldFont = (WXHFONT)hfont;
- if (m_font.Ok() && m_font.GetResourceHandle())
+ m_font = font;
+ }
+ }
+ else // invalid font, reset the current font
{
- HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle());
- if (f == (HFONT) NULL)
+ if ( m_oldFont )
{
- wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
+ if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR )
+ {
+ wxLogLastError(_T("SelectObject(old font)"));
+ }
+
+ m_oldFont = 0;
}
- if (!m_oldFont)
- m_oldFont = (WXHFONT) f;
+
+ m_font = wxNullFont;
}
}
-void wxDC::SetPen(const wxPen& pen)
+void wxMSWDCImpl::SetPen(const wxPen& pen)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldPen)
- {
- ::SelectObject(GetHdc(), (HPEN) m_oldPen);
- m_oldPen = 0;
- }
-
- m_pen = pen;
+ if ( pen == m_pen )
+ return;
- if (!m_pen.Ok())
+ if ( pen.IsOk() )
{
- if (m_oldPen)
- ::SelectObject(GetHdc(), (HPEN) m_oldPen);
- m_oldPen = 0;
- }
+ HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen));
+ if ( hpen == HGDI_ERROR )
+ {
+ wxLogLastError(_T("SelectObject(pen)"));
+ }
+ else // selected ok
+ {
+ if ( !m_oldPen )
+ m_oldPen = (WXHPEN)hpen;
- if (m_pen.Ok())
+ m_pen = pen;
+ }
+ }
+ else // invalid pen, reset the current pen
{
- if (m_pen.GetResourceHandle())
+ if ( m_oldPen )
{
- HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle());
- if (!m_oldPen)
- m_oldPen = (WXHPEN) p;
+ if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR )
+ {
+ wxLogLastError(_T("SelectObject(old pen)"));
+ }
+
+ m_oldPen = 0;
}
+
+ m_pen = wxNullPen;
}
}
-void wxDC::SetBrush(const wxBrush& brush)
+void wxMSWDCImpl::SetBrush(const wxBrush& brush)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
-
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldBrush)
- {
- ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
- m_oldBrush = 0;
- }
+ WXMICROWIN_CHECK_HDC
- m_brush = brush;
+ if ( brush == m_brush )
+ return;
- if (!m_brush.Ok())
+ if ( brush.IsOk() )
{
- if (m_oldBrush)
- ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
- m_oldBrush = 0;
- }
+ // we must make sure the brush is aligned with the logical coordinates
+ // before selecting it
+ wxBitmap *stipple = brush.GetStipple();
+ if ( stipple && stipple->IsOk() )
+ {
+ if ( !::SetBrushOrgEx
+ (
+ GetHdc(),
+ m_deviceOriginX % stipple->GetWidth(),
+ m_deviceOriginY % stipple->GetHeight(),
+ NULL // [out] previous brush origin
+ ) )
+ {
+ wxLogLastError(_T("SetBrushOrgEx()"));
+ }
+ }
- if (m_brush.Ok())
- {
- // to make sure the brush is alligned with the logical coordinates
- wxBitmap *stipple = m_brush.GetStipple();
- if ( stipple && stipple->Ok() )
+ HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush));
+ if ( hbrush == HGDI_ERROR )
{
-#ifdef __WIN32__
- ::SetBrushOrgEx(GetHdc(),
- m_deviceOriginX % stipple->GetWidth(),
- m_deviceOriginY % stipple->GetHeight(),
- NULL); // don't need previous brush origin
-#else
- ::SetBrushOrg(GetHdc(),
- m_deviceOriginX % stipple->GetWidth(),
- m_deviceOriginY % stipple->GetHeight());
-#endif
+ wxLogLastError(_T("SelectObject(brush)"));
}
+ else // selected ok
+ {
+ if ( !m_oldBrush )
+ m_oldBrush = (WXHBRUSH)hbrush;
- if ( m_brush.GetResourceHandle() )
+ m_brush = brush;
+ }
+ }
+ else // invalid brush, reset the current brush
+ {
+ if ( m_oldBrush )
{
- HBRUSH b = 0;
- b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle());
- if (!m_oldBrush)
- m_oldBrush = (WXHBRUSH) b;
+ if ( ::SelectObject(GetHdc(), (HPEN) m_oldBrush) == HGDI_ERROR )
+ {
+ wxLogLastError(_T("SelectObject(old brush)"));
+ }
+
+ m_oldBrush = 0;
}
+
+ m_brush = wxNullBrush;
}
}
-void wxDC::SetBackground(const wxBrush& brush)
+void wxMSWDCImpl::SetBackground(const wxBrush& brush)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
m_backgroundBrush = brush;
- if (!m_backgroundBrush.Ok())
- return;
-
- if (m_canvas)
- {
- bool customColours = TRUE;
- // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
- // change background colours from the control-panel specified colours.
- if (m_canvas->IsKindOf(CLASSINFO(wxWindow)) && ((m_canvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
- customColours = FALSE;
-
- if (customColours)
- {
- if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
- {
- m_canvas->SetTransparent(TRUE);
- }
- else
- {
- // New behaviour, 10/2/99: setting the background brush of a DC
- // doesn't affect the window background colour. However,
- // I'm leaving in the transparency setting because it's needed by
- // various controls (e.g. wxStaticText) to determine whether to draw
- // transparently or not. TODO: maybe this should be a new function
- // wxWindow::SetTransparency(). Should that apply to the child itself, or the
- // parent?
- // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
- m_canvas->SetTransparent(FALSE);
- }
- }
- }
- COLORREF new_color = m_backgroundBrush.GetColour().GetPixel();
+ if ( m_backgroundBrush.IsOk() )
{
- (void)SetBkColor(GetHdc(), new_color);
+ (void)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel());
}
}
-void wxDC::SetBackgroundMode(int mode)
+void wxMSWDCImpl::SetBackgroundMode(int mode)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
m_backgroundMode = mode;
// and m_backgroundMode is used there
}
-void wxDC::SetLogicalFunction(int function)
+void wxMSWDCImpl::SetLogicalFunction(int function)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
m_logicalFunction = function;
SetRop(m_hDC);
}
-void wxDC::SetRop(WXHDC dc)
+void wxMSWDCImpl::SetRop(WXHDC dc)
{
if ( !dc || m_logicalFunction < 0 )
return;
SetROP2(GetHdc(), rop);
}
-bool wxDC::StartDoc(const wxString& WXUNUSED(message))
+bool wxMSWDCImpl::StartDoc(const wxString& WXUNUSED(message))
{
- // We might be previewing, so return TRUE to let it continue.
- return TRUE;
+ // We might be previewing, so return true to let it continue.
+ return true;
}
-void wxDC::EndDoc()
+void wxMSWDCImpl::EndDoc()
{
}
-void wxDC::StartPage()
+void wxMSWDCImpl::StartPage()
{
}
-void wxDC::EndPage()
+void wxMSWDCImpl::EndPage()
{
}
// text metrics
// ---------------------------------------------------------------------------
-wxCoord wxDC::GetCharHeight() const
+wxCoord wxMSWDCImpl::GetCharHeight() const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return 0;
-#endif
+ WXMICROWIN_CHECK_HDC_RET(0)
TEXTMETRIC lpTextMetric;
return lpTextMetric.tmHeight;
}
-wxCoord wxDC::GetCharWidth() const
+wxCoord wxMSWDCImpl::GetCharWidth() const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return 0;
-#endif
+ WXMICROWIN_CHECK_HDC_RET(0)
TEXTMETRIC lpTextMetric;
return lpTextMetric.tmAveCharWidth;
}
-void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
+void wxMSWDCImpl::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
wxCoord *descent, wxCoord *externalLeading,
- wxFont *font) const
+ const wxFont *font) const
{
#ifdef __WXMICROWIN__
if (!GetHDC())
HFONT hfontOld;
if ( font )
{
- wxASSERT_MSG( font->Ok(), _T("invalid font in wxDC::GetTextExtent") );
+ wxASSERT_MSG( font->IsOk(), _T("invalid font in wxMSWDCImpl::GetTextExtent") );
hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
}
}
SIZE sizeRect;
- TEXTMETRIC tm;
+ const size_t len = string.length();
+ if ( !::GetTextExtentPoint32(GetHdc(), string.wx_str(), len, &sizeRect) )
+ {
+ wxLogLastError(_T("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)
- GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
- GetTextMetrics(GetHdc(), &tm);
+ TEXTMETRIC tm;
+ ::GetTextMetrics(GetHdc(), &tm);
if (x)
*x = sizeRect.cx;
}
}
-void wxDC::SetMapMode(int mode)
+
+// 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
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
+ static int maxLenText = -1;
+ static int maxWidth = -1;
+ int fit = 0;
+ SIZE sz = {0,0};
+ int stlen = text.length();
+
+ 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;
+ }
+
+ widths.Empty();
+ widths.Add(0, stlen); // fill the array with zeros
+ if (stlen == 0)
+ return true;
+
+ 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;
+ }
+
+ return true;
+}
+
+void wxMSWDCImpl::RealizeScaleAndOrigin()
+{
+ // VZ: it seems very wasteful to always use MM_ANISOTROPIC when in 99% of
+ // cases we could do with MM_TEXT and in the remaining 0.9% with
+ // MM_ISOTROPIC (TODO!)
+#ifndef __WXWINCE__
+ ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
+
+ int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
+ height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
+
+ ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
+ ::SetWindowExtEx(GetHdc(), width, height, NULL);
+
+ ::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL);
+ ::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL);
#endif
+}
+
+void wxMSWDCImpl::SetMapMode(int mode)
+{
+ WXMICROWIN_CHECK_HDC
m_mappingMode = mode;
return;
}
- double mm2pixelsX = pixel_width / mm_width,
- mm2pixelsY = pixel_height / mm_height;
+ double mm2pixelsX = (double)pixel_width / mm_width,
+ mm2pixelsY = (double)pixel_height / mm_height;
switch (mode)
{
}
}
- // VZ: it seems very wasteful to always use MM_ANISOTROPIC when in 99% of
- // cases we could do with MM_TEXT and in the remaining 0.9% with
- // MM_ISOTROPIC (TODO!)
- ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
-
- int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
- height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
+ ComputeScaleAndOrigin();
- ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
- ::SetWindowExtEx(GetHdc(), width, height, NULL);
-
- ::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL);
- ::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL);
+ RealizeScaleAndOrigin();
}
-void wxDC::SetUserScale(double x, double y)
+void wxMSWDCImpl::SetUserScale(double x, double y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
if ( x == m_userScaleX && y == m_userScaleY )
return;
- m_userScaleX = x;
- m_userScaleY = y;
+ wxDCImpl::SetUserScale(x,y);
- SetMapMode(m_mappingMode);
+ RealizeScaleAndOrigin();
}
-void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
+void wxMSWDCImpl::SetAxisOrientation(bool xLeftRight,
+ bool yBottomUp)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
int signX = xLeftRight ? 1 : -1,
signY = yBottomUp ? -1 : 1;
- if ( signX != m_signX || signY != m_signY )
- {
- m_signX = signX;
- m_signY = signY;
-
- SetMapMode(m_mappingMode);
- }
-}
-
-void wxDC::SetSystemScale(double x, double y)
-{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
-
- if ( x == m_scaleX && y == m_scaleY )
+ if (signX == m_signX && signY == m_signY)
return;
- m_scaleX = x;
- m_scaleY = y;
+ wxDCImpl::SetAxisOrientation( xLeftRight, yBottomUp );
- SetMapMode(m_mappingMode);
+ RealizeScaleAndOrigin();
}
-void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y)
+void wxMSWDCImpl::SetLogicalOrigin(wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
if ( x == m_logicalOriginX && y == m_logicalOriginY )
return;
- m_logicalOriginX = x;
- m_logicalOriginY = y;
+ wxDCImpl::SetLogicalOrigin( x, y );
+#ifndef __WXWINCE__
::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
+#endif
}
-void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y)
+void wxMSWDCImpl::SetDeviceOrigin(wxCoord x, wxCoord y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
if ( x == m_deviceOriginX && y == m_deviceOriginY )
return;
- m_deviceOriginX = x;
- m_deviceOriginY = y;
+ wxDCImpl::SetDeviceOrigin( x, y );
::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
}
// ---------------------------------------------------------------------------
-// coordinates transformations
+// bit blit
// ---------------------------------------------------------------------------
-wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
-{
- return DeviceToLogicalXRel(x - m_deviceOriginX)*m_signX + m_logicalOriginX;
-}
-
-wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
-{
- // axis orientation is not taken into account for conversion of a distance
- return (wxCoord)(x / (m_logicalScaleX*m_userScaleX*m_scaleX));
-}
-
-wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
-{
- return DeviceToLogicalYRel(y - m_deviceOriginY)*m_signY + m_logicalOriginY;
-}
-
-wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
-{
- // axis orientation is not taken into account for conversion of a distance
- return (wxCoord)( y / (m_logicalScaleY*m_userScaleY*m_scaleY));
-}
-
-wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
+bool wxMSWDCImpl::DoBlit(wxCoord dstX, wxCoord dstY,
+ wxCoord dstWidth, wxCoord dstHeight,
+ wxDC *source,
+ wxCoord srcX, wxCoord srcY,
+ int rop, bool useMask,
+ wxCoord srcMaskX, wxCoord srcMaskY)
{
- return LogicalToDeviceXRel(x - m_logicalOriginX)*m_signX + m_deviceOriginX;
+ return DoStretchBlit(dstX, dstY, dstWidth, dstHeight, source, srcX, srcY, dstWidth, dstHeight, rop, useMask, srcMaskX, srcMaskY);
}
-wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
+bool wxMSWDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest,
+ wxCoord dstWidth, wxCoord dstHeight,
+ wxDC *source,
+ wxCoord xsrc, wxCoord ysrc,
+ wxCoord srcWidth, wxCoord srcHeight,
+ int rop, bool useMask,
+ wxCoord xsrcMask, wxCoord ysrcMask)
{
- // axis orientation is not taken into account for conversion of a distance
- return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
-}
+ wxCHECK_MSG( source, false, _T("wxMSWDCImpl::Blit(): NULL wxDC pointer") );
-wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
-{
- return LogicalToDeviceYRel(y - m_logicalOriginY)*m_signY + m_deviceOriginY;
-}
+ WXMICROWIN_CHECK_HDC_RET(false)
-wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
-{
- // axis orientation is not taken into account for conversion of a distance
- return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
-}
+ wxMSWDCImpl *implSrc = wxDynamicCast( source->GetImpl(), wxMSWDCImpl );
+ if ( !implSrc )
+ {
+ // TODO: Do we want to be able to blit from other DCs too?
+ return false;
+ }
-// ---------------------------------------------------------------------------
-// bit blit
-// ---------------------------------------------------------------------------
+ const HDC hdcSrc = GetHdcOf(*implSrc);
-bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest,
- wxCoord width, wxCoord height,
- wxDC *source, wxCoord xsrc, wxCoord ysrc,
- int rop, bool useMask,
- wxCoord xsrcMask, wxCoord ysrcMask)
-{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return FALSE;
-#endif
+ // if either the source or destination has alpha channel, we must use
+ // AlphaBlt() as other function don't handle it correctly
+ const wxBitmap& bmpSrc = implSrc->GetSelectedBitmap();
+ if ( bmpSrc.IsOk() && (bmpSrc.HasAlpha() ||
+ (m_selectedBitmap.IsOk() && m_selectedBitmap.HasAlpha())) )
+ {
+ if ( AlphaBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight,
+ xsrc, ysrc, srcWidth, srcHeight, hdcSrc, bmpSrc) )
+ return true;
+ }
wxMask *mask = NULL;
if ( useMask )
{
- const wxBitmap& bmp = source->m_selectedBitmap;
- mask = bmp.GetMask();
+ mask = bmpSrc.GetMask();
- if ( !(bmp.Ok() && mask && mask->GetMaskBitmap()) )
+ if ( !(bmpSrc.IsOk() && mask && mask->GetMaskBitmap()) )
{
// don't give assert here because this would break existing
// programs - just silently ignore useMask parameter
- useMask = FALSE;
+ useMask = false;
}
}
COLORREF old_textground = ::GetTextColor(GetHdc());
COLORREF old_background = ::GetBkColor(GetHdc());
- if (m_textForegroundColour.Ok())
+ if (m_textForegroundColour.IsOk())
{
::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
}
- if (m_textBackgroundColour.Ok())
+ if (m_textBackgroundColour.IsOk())
{
::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
}
- DWORD dwRop = SRCCOPY;
+ DWORD dwRop;
switch (rop)
{
case wxXOR: dwRop = SRCINVERT; break;
case wxNOR: dwRop = NOTSRCCOPY; break;
default:
wxFAIL_MSG( wxT("unsupported logical function") );
- return FALSE;
+ return false;
}
- bool success = FALSE;
+ bool success = false;
if (useMask)
{
// of the mask which is also contrary to the Windows one)
// On some systems, MaskBlt succeeds yet is much much slower
- // than the wxWindows fall-back implementation. So we need
+ // 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)
#endif
{
- success = ::MaskBlt(GetHdc(), xdest, ydest, width, height,
- GetHdcOf(*source), xsrc, ysrc,
- (HBITMAP)mask->GetMaskBitmap(), xsrcMask, ysrcMask,
- MAKEROP4(dwRop, DSTCOPY)) != 0;
+ if ( dstWidth == srcWidth && dstHeight == srcHeight )
+ {
+ success = ::MaskBlt
+ (
+ GetHdc(),
+ xdest, ydest, dstWidth, dstHeight,
+ hdcSrc,
+ xsrc, ysrc,
+ (HBITMAP)mask->GetMaskBitmap(),
+ xsrcMask, ysrcMask,
+ MAKEROP4(dwRop, DSTCOPY)
+ ) != 0;
+ }
}
if ( !success )
#if wxUSE_DC_CACHEING
// create a temp buffer bitmap and DCs to access it and the mask
- wxDCCacheEntry* dcCacheEntry1 = FindDCInCache(NULL, source->GetHDC());
+ wxDCCacheEntry* dcCacheEntry1 = FindDCInCache(NULL, hdcSrc);
dc_mask = (HDC) dcCacheEntry1->m_dc;
wxDCCacheEntry* dcCacheEntry2 = FindDCInCache(dcCacheEntry1, GetHDC());
dc_buffer = (HDC) dcCacheEntry2->m_dc;
wxDCCacheEntry* bitmapCacheEntry = FindBitmapInCache(GetHDC(),
- width, height);
+ dstWidth, dstHeight);
buffer_bmap = (HBITMAP) bitmapCacheEntry->m_bitmap;
#else // !wxUSE_DC_CACHEING
// create a temp buffer bitmap and DCs to access it and the mask
- dc_mask = ::CreateCompatibleDC(GetHdcOf(*source));
+ dc_mask = ::CreateCompatibleDC(hdcSrc);
dc_buffer = ::CreateCompatibleDC(GetHdc());
- buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height);
+ buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), dstWidth, dstHeight);
#endif // wxUSE_DC_CACHEING/!wxUSE_DC_CACHEING
HGDIOBJ hOldMaskBitmap = ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap());
HGDIOBJ hOldBufferBitmap = ::SelectObject(dc_buffer, buffer_bmap);
// copy dest to buffer
- if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ if ( !::BitBlt(dc_buffer, 0, 0, (int)dstWidth, (int)dstHeight,
GetHdc(), xdest, ydest, SRCCOPY) )
{
wxLogLastError(wxT("BitBlt"));
}
+#ifndef __WXWINCE__
+ StretchBltModeChanger changeMode(dc_buffer, COLORONCOLOR);
+#endif
+
// copy src to buffer using selected raster op
- if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- GetHdcOf(*source), xsrc, ysrc, dwRop) )
+ if ( !::StretchBlt(dc_buffer, 0, 0, (int)dstWidth, (int)dstHeight,
+ hdcSrc, xsrc, ysrc, srcWidth, srcHeight, dwRop) )
{
- wxLogLastError(wxT("BitBlt"));
+ wxLogLastError(wxT("StretchBlt"));
}
// set masked area in buffer to BLACK (pixel value 0)
COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255));
COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0));
- if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- dc_mask, xsrcMask, ysrcMask, SRCAND) )
+ if ( !::StretchBlt(dc_buffer, 0, 0, (int)dstWidth, (int)dstHeight,
+ dc_mask, xsrcMask, ysrcMask, srcWidth, srcHeight, SRCAND) )
{
- wxLogLastError(wxT("BitBlt"));
+ wxLogLastError(wxT("StretchBlt"));
}
// set unmasked area in dest to BLACK
::SetBkColor(GetHdc(), RGB(0, 0, 0));
::SetTextColor(GetHdc(), RGB(255, 255, 255));
- if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height,
- dc_mask, xsrcMask, ysrcMask, SRCAND) )
+ if ( !::StretchBlt(GetHdc(), xdest, ydest, (int)dstWidth, (int)dstHeight,
+ dc_mask, xsrcMask, ysrcMask, srcWidth, srcHeight, SRCAND) )
{
- wxLogLastError(wxT("BitBlt"));
+ wxLogLastError(wxT("StretchBlt"));
}
::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
::SetTextColor(GetHdc(), prevCol);
// OR buffer to dest
success = ::BitBlt(GetHdc(), xdest, ydest,
- (int)width, (int)height,
+ (int)dstWidth, (int)dstHeight,
dc_buffer, 0, 0, SRCPAINT) != 0;
if ( !success )
{
}
else // no mask, just BitBlt() it
{
- success = ::BitBlt(GetHdc(), xdest, ydest,
- (int)width, (int)height,
- GetHdcOf(*source), xsrc, ysrc, dwRop) != 0;
+ // if we already have a DIB, draw it using StretchDIBits(), otherwise
+ // use StretchBlt() if available and finally fall back to BitBlt()
+
+ // FIXME: use appropriate WinCE functions
+#ifndef __WXWINCE__
+ const int caps = ::GetDeviceCaps(GetHdc(), RASTERCAPS);
+ if ( bmpSrc.IsOk() && (caps & RC_STRETCHDIB) )
+ {
+ DIBSECTION ds;
+ wxZeroMemory(ds);
+
+ if ( ::GetObject(GetHbitmapOf(bmpSrc),
+ sizeof(ds),
+ &ds) == sizeof(ds) )
+ {
+ StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR);
+
+ // Figure out what co-ordinate system we're supposed to specify
+ // ysrc in.
+ const LONG hDIB = ds.dsBmih.biHeight;
+ if ( hDIB > 0 )
+ {
+ // reflect ysrc
+ ysrc = hDIB - (ysrc + dstHeight);
+ }
+
+ if ( ::StretchDIBits(GetHdc(),
+ xdest, ydest,
+ dstWidth, dstHeight,
+ xsrc, ysrc,
+ srcWidth, srcHeight,
+ ds.dsBm.bmBits,
+ (LPBITMAPINFO)&ds.dsBmih,
+ DIB_RGB_COLORS,
+ dwRop
+ ) == (int)GDI_ERROR )
+ {
+ // On Win9x this API fails most (all?) of the time, so
+ // logging it becomes quite distracting. Since it falls
+ // back to the code below this is not really serious, so
+ // don't log it.
+ //wxLogLastError(wxT("StretchDIBits"));
+ }
+ else
+ {
+ success = true;
+ }
+ }
+ }
+
+ if ( !success && (caps & RC_STRETCHBLT) )
+#endif
+ // __WXWINCE__
+ {
+#ifndef __WXWINCE__
+ StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR);
+#endif
+
+ if ( !::StretchBlt
+ (
+ GetHdc(),
+ xdest, ydest, dstWidth, dstHeight,
+ hdcSrc,
+ xsrc, ysrc, srcWidth, srcHeight,
+ dwRop
+ ) )
+ {
+ wxLogLastError(_T("StretchBlt"));
+ }
+ else
+ {
+ success = true;
+ }
+ }
+
if ( !success )
{
- wxLogLastError(wxT("BitBlt"));
+ if ( !::BitBlt
+ (
+ GetHdc(),
+ xdest, ydest,
+ (int)dstWidth, (int)dstHeight,
+ hdcSrc,
+ xsrc, ysrc,
+ dwRop
+ ) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+ else
+ {
+ success = true;
+ }
}
}
+
::SetTextColor(GetHdc(), old_textground);
::SetBkColor(GetHdc(), old_background);
return success;
}
-void wxDC::DoGetSize(int *w, int *h) const
+void wxMSWDCImpl::GetDeviceSize(int *width, int *height) const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES);
- if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES);
+ if ( width )
+ *width = ::GetDeviceCaps(GetHdc(), HORZRES);
+ if ( height )
+ *height = ::GetDeviceCaps(GetHdc(), VERTRES);
}
-void wxDC::DoGetSizeMM(int *w, int *h) const
+void wxMSWDCImpl::DoGetSizeMM(int *w, int *h) const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
+
+ // if we implement it in terms of DoGetSize() instead of directly using the
+ // results returned by GetDeviceCaps(HORZ/VERTSIZE) as was done before, it
+ // will also work for wxWindowDC and wxClientDC even though their size is
+ // not the same as the total size of the screen
+ int wPixels, hPixels;
+ DoGetSize(&wPixels, &hPixels);
+
+ if ( w )
+ {
+ int wTotal = ::GetDeviceCaps(GetHdc(), HORZRES);
+
+ wxCHECK_RET( wTotal, _T("0 width device?") );
+
+ *w = (wPixels * ::GetDeviceCaps(GetHdc(), HORZSIZE)) / wTotal;
+ }
- if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE);
- if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE);
+ if ( h )
+ {
+ int hTotal = ::GetDeviceCaps(GetHdc(), VERTRES);
+
+ wxCHECK_RET( hTotal, _T("0 height device?") );
+
+ *h = (hPixels * ::GetDeviceCaps(GetHdc(), VERTSIZE)) / hTotal;
+ }
}
-wxSize wxDC::GetPPI() const
+wxSize wxMSWDCImpl::GetPPI() const
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return wxSize();
-#endif
+ WXMICROWIN_CHECK_HDC_RET(wxSize(0,0))
int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
return wxSize(x, y);
}
-// For use by wxWindows only, unless custom units are required.
-void wxDC::SetLogicalScale(double x, double y)
+// For use by wxWidgets only, unless custom units are required.
+void wxMSWDCImpl::SetLogicalScale(double x, double y)
{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
+ WXMICROWIN_CHECK_HDC
- m_logicalScaleX = x;
- m_logicalScaleY = y;
+ wxDCImpl::SetLogicalScale(x,y);
}
-#if WXWIN_COMPATIBILITY
-void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
- float *descent, float *externalLeading,
- wxFont *theFont, bool use16bit) const
-{
-#ifdef __WXMICROWIN__
- if (!GetHDC()) return;
-#endif
-
- wxCoord x1, y1, descent1, externalLeading1;
- GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
- *x = x1; *y = y1;
- if (descent)
- *descent = descent1;
- if (externalLeading)
- *externalLeading = externalLeading1;
-}
-#endif
+// ----------------------------------------------------------------------------
+// DC caching
+// ----------------------------------------------------------------------------
#if wxUSE_DC_CACHEING
* entry for the bitmap, and two for the DCs. -- JACS
*/
-wxList wxDC::sm_bitmapCache;
-wxList wxDC::sm_dcCache;
+wxObjectList wxMSWDCImpl::sm_bitmapCache;
+wxObjectList wxMSWDCImpl::sm_dcCache;
wxDCCacheEntry::wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth)
{
::DeleteDC((HDC) m_dc);
}
-wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h)
+wxDCCacheEntry* wxMSWDCImpl::FindBitmapInCache(WXHDC dc, int w, int h)
{
int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
- wxNode* node = sm_bitmapCache.First();
+ wxList::compatibility_iterator node = sm_bitmapCache.GetFirst();
while (node)
{
- wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data();
+ wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
if (entry->m_depth == depth)
{
return entry;
}
- node = node->Next();
+ node = node->GetNext();
}
WXHBITMAP hBitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h);
if ( !hBitmap)
return entry;
}
-wxDCCacheEntry* wxDC::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc)
+wxDCCacheEntry* wxMSWDCImpl::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc)
{
int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
- wxNode* node = sm_dcCache.First();
+ wxList::compatibility_iterator node = sm_dcCache.GetFirst();
while (node)
{
- wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data();
+ wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
// Don't return the same one as we already have
if (!notThis || (notThis != entry))
}
}
- node = node->Next();
+ node = node->GetNext();
}
WXHDC hDC = (WXHDC) ::CreateCompatibleDC((HDC) dc);
if ( !hDC)
return entry;
}
-void wxDC::AddToBitmapCache(wxDCCacheEntry* entry)
+void wxMSWDCImpl::AddToBitmapCache(wxDCCacheEntry* entry)
{
sm_bitmapCache.Append(entry);
}
-void wxDC::AddToDCCache(wxDCCacheEntry* entry)
+void wxMSWDCImpl::AddToDCCache(wxDCCacheEntry* entry)
{
sm_dcCache.Append(entry);
}
-void wxDC::ClearCache()
+void wxMSWDCImpl::ClearCache()
{
- sm_bitmapCache.DeleteContents(TRUE);
- sm_bitmapCache.Clear();
- sm_bitmapCache.DeleteContents(FALSE);
- sm_dcCache.DeleteContents(TRUE);
- sm_dcCache.Clear();
- sm_dcCache.DeleteContents(FALSE);
+ WX_CLEAR_LIST(wxList, sm_dcCache);
+ WX_CLEAR_LIST(wxList, sm_bitmapCache);
}
// Clean up cache at app exit
class wxDCModule : public wxModule
{
public:
- virtual bool OnInit() { return TRUE; }
- virtual void OnExit() { wxDC::ClearCache(); }
+ virtual bool OnInit() { return true; }
+ virtual void OnExit() { wxMSWDCImpl::ClearCache(); }
private:
DECLARE_DYNAMIC_CLASS(wxDCModule)
IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
-#endif
- // wxUSE_DC_CACHEING
+#endif // wxUSE_DC_CACHEING
+
+// ----------------------------------------------------------------------------
+// alpha channel support
+// ----------------------------------------------------------------------------
+
+static bool AlphaBlt(HDC hdcDst,
+ int x, int y, int dstWidth, int dstHeight,
+ int srcX, int srcY,
+ int srcWidth, int srcHeight,
+ HDC hdcSrc,
+ const wxBitmap& bmp)
+{
+ wxASSERT_MSG( bmp.IsOk() && bmp.HasAlpha(), _T("AlphaBlt(): invalid bitmap") );
+ wxASSERT_MSG( hdcDst && hdcSrc, _T("AlphaBlt(): invalid HDC") );
+
+ // do we have AlphaBlend() and company in the headers?
+#if defined(AC_SRC_OVER) && wxUSE_DYNLIB_CLASS
+ // yes, now try to see if we have it during run-time
+ typedef BOOL (WINAPI *AlphaBlend_t)(HDC,int,int,int,int,
+ HDC,int,int,int,int,
+ BLENDFUNCTION);
+
+ static AlphaBlend_t
+ pfnAlphaBlend = (AlphaBlend_t)wxMSIMG32DLL.GetSymbol(_T("AlphaBlend"));
+ if ( pfnAlphaBlend )
+ {
+ BLENDFUNCTION bf;
+ bf.BlendOp = AC_SRC_OVER;
+ bf.BlendFlags = 0;
+ bf.SourceConstantAlpha = 0xff;
+ bf.AlphaFormat = AC_SRC_ALPHA;
+
+ if ( pfnAlphaBlend(hdcDst, x, y, dstWidth, dstHeight,
+ hdcSrc, srcX, srcY, srcWidth, srcHeight,
+ bf) )
+ {
+ // skip wxAlphaBlend() call below
+ return true;
+ }
+
+ wxLogLastError(_T("AlphaBlend"));
+ }
+#else
+ wxUnusedVar(hdcSrc);
+#endif // defined(AC_SRC_OVER)
+
+ // AlphaBlend() unavailable of failed: use our own (probably much slower)
+ // implementation
+#ifdef wxHAVE_RAW_BITMAP
+ wxAlphaBlend(hdcDst, x, y, dstWidth, dstHeight, srcX, srcY, srcWidth, srcHeight, bmp);
+
+ return true;
+#else // !wxHAVE_RAW_BITMAP
+ // no wxAlphaBlend() neither, fall back to using simple BitBlt() (we lose
+ // alpha but at least something will be shown like this)
+ wxUnusedVar(bmp);
+ return false;
+#endif // wxHAVE_RAW_BITMAP
+}
+
+
+// wxAlphaBlend: our fallback if ::AlphaBlend() is unavailable
+#ifdef wxHAVE_RAW_BITMAP
+
+static void
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst,
+ int dstWidth, int dstHeight,
+ int srcX, int srcY,
+ int srcWidth, int srcHeight,
+ const wxBitmap& bmpSrc)
+{
+ // get the destination DC pixels
+ wxBitmap bmpDst(dstWidth, dstHeight, 32 /* force creating RGBA DIB */);
+ MemoryHDC hdcMem;
+ SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst));
+
+ if ( !::BitBlt(hdcMem, 0, 0, dstWidth, dstHeight, hdcDst, xDst, yDst, SRCCOPY) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+
+ // combine them with the source bitmap using alpha
+ wxAlphaPixelData dataDst(bmpDst),
+ dataSrc((wxBitmap &)bmpSrc);
+
+ wxCHECK_RET( dataDst && dataSrc,
+ _T("failed to get raw data in wxAlphaBlend") );
+
+ wxAlphaPixelData::Iterator pDst(dataDst),
+ pSrc(dataSrc);
+
+
+ for ( int y = 0; y < dstHeight; y++ )
+ {
+ wxAlphaPixelData::Iterator pDstRowStart = pDst;
+
+ for ( int x = 0; x < dstWidth; x++ )
+ {
+ // source is point sampled, Alpha StretchBlit is ugly on Win95
+ // (but does not impact performance)
+ pSrc.MoveTo(dataSrc, srcX + (srcWidth*x/dstWidth), srcY + (srcHeight*y/dstHeight));
+
+ // note that source bitmap uses premultiplied alpha (as required by
+ // the real AlphaBlend)
+ const unsigned beta = 255 - pSrc.Alpha();
+
+ pDst.Red() = pSrc.Red() + (beta * pDst.Red() + 127) / 255;
+ pDst.Blue() = pSrc.Blue() + (beta * pDst.Blue() + 127) / 255;
+ pDst.Green() = pSrc.Green() + (beta * pDst.Green() + 127) / 255;
+
+ ++pDst;
+ }
+
+ pDst = pDstRowStart;
+ pDst.OffsetY(dataDst, 1);
+ }
+
+ // and finally blit them back to the destination DC
+ if ( !::BitBlt(hdcDst, xDst, yDst, dstWidth, dstHeight, hdcMem, 0, 0, SRCCOPY) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+}
+
+#endif // #ifdef wxHAVE_RAW_BITMAP
+
+void wxMSWDCImpl::DoGradientFillLinear (const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ wxDirection nDirection)
+{
+ // use native function if we have compile-time support it and can load it
+ // during run-time (linking to it statically would make the program
+ // unusable on earlier Windows versions)
+#if defined(GRADIENT_FILL_RECT_H) && wxUSE_DYNLIB_CLASS
+ typedef BOOL
+ (WINAPI *GradientFill_t)(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG);
+ static GradientFill_t pfnGradientFill =
+ (GradientFill_t)wxMSIMG32DLL.GetSymbol(_T("GradientFill"));
+
+ if ( pfnGradientFill )
+ {
+ GRADIENT_RECT grect;
+ grect.UpperLeft = 0;
+ grect.LowerRight = 1;
+
+ // invert colours direction if not filling from left-to-right or
+ // top-to-bottom
+ int firstVertex = nDirection == wxNORTH || nDirection == wxWEST ? 1 : 0;
+
+ // one vertex for upper left and one for upper-right
+ TRIVERTEX vertices[2];
+
+ vertices[0].x = rect.GetLeft();
+ vertices[0].y = rect.GetTop();
+ vertices[1].x = rect.GetRight()+1;
+ vertices[1].y = rect.GetBottom()+1;
+
+ vertices[firstVertex].Red = (COLOR16)(initialColour.Red() << 8);
+ vertices[firstVertex].Green = (COLOR16)(initialColour.Green() << 8);
+ vertices[firstVertex].Blue = (COLOR16)(initialColour.Blue() << 8);
+ vertices[firstVertex].Alpha = 0;
+ vertices[1 - firstVertex].Red = (COLOR16)(destColour.Red() << 8);
+ vertices[1 - firstVertex].Green = (COLOR16)(destColour.Green() << 8);
+ vertices[1 - firstVertex].Blue = (COLOR16)(destColour.Blue() << 8);
+ vertices[1 - firstVertex].Alpha = 0;
+
+ if ( (*pfnGradientFill)
+ (
+ GetHdc(),
+ vertices,
+ WXSIZEOF(vertices),
+ &grect,
+ 1,
+ nDirection == wxWEST || nDirection == wxEAST
+ ? GRADIENT_FILL_RECT_H
+ : GRADIENT_FILL_RECT_V
+ ) )
+ {
+ // skip call of the base class version below
+ return;
+ }
+
+ wxLogLastError(_T("GradientFill"));
+ }
+#endif // wxUSE_DYNLIB_CLASS
+
+ wxDCImpl::DoGradientFillLinear(rect, initialColour, destColour, nDirection);
+}
+
+#if wxUSE_DYNLIB_CLASS
+
+static DWORD wxGetDCLayout(HDC hdc)
+{
+ typedef DWORD (WINAPI *GetLayout_t)(HDC);
+ static GetLayout_t
+ wxDL_INIT_FUNC(s_pfn, GetLayout, wxDynamicLibrary(_T("gdi32.dll")));
+
+ return s_pfnGetLayout ? s_pfnGetLayout(hdc) : (DWORD)-1;
+}
+
+wxLayoutDirection wxMSWDCImpl::GetLayoutDirection() const
+{
+ DWORD layout = wxGetDCLayout(GetHdc());
+
+ if ( layout == (DWORD)-1 )
+ return wxLayout_Default;
+
+ return layout & LAYOUT_RTL ? wxLayout_RightToLeft : wxLayout_LeftToRight;
+}
+
+void wxMSWDCImpl::SetLayoutDirection(wxLayoutDirection dir)
+{
+ typedef DWORD (WINAPI *SetLayout_t)(HDC, DWORD);
+ static SetLayout_t
+ wxDL_INIT_FUNC(s_pfn, SetLayout, wxDynamicLibrary(_T("gdi32.dll")));
+ if ( !s_pfnSetLayout )
+ return;
+
+ if ( dir == wxLayout_Default )
+ {
+ dir = wxTheApp->GetLayoutDirection();
+ if ( dir == wxLayout_Default )
+ return;
+ }
+
+ DWORD layout = wxGetDCLayout(GetHdc());
+ if ( dir == wxLayout_RightToLeft )
+ layout |= LAYOUT_RTL;
+ else
+ layout &= ~LAYOUT_RTL;
+
+ s_pfnSetLayout(GetHdc(), layout);
+}
+
+#else // !wxUSE_DYNLIB_CLASS
+
+// we can't provide RTL support without dynamic loading, so stub it out
+wxLayoutDirection wxMSWDCImpl::GetLayoutDirection() const
+{
+ return wxLayout_Default;
+}
+
+void wxMSWDCImpl::SetLayoutDirection(wxLayoutDirection WXUNUSED(dir))
+{
+}
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
projects / wxWidgets.git / blobdiff