// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
+// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+// ===========================================================================
+// declarations
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// headers
+// ---------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation "dc.h"
+ #pragma implementation "dc.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/frame.h"
-#include "wx/dc.h"
-#include "wx/utils.h"
-#include "wx/dialog.h"
-#include "wx/app.h"
+ #include "wx/window.h"
+ #include "wx/dc.h"
+ #include "wx/utils.h"
+ #include "wx/dialog.h"
+ #include "wx/app.h"
+ #include "wx/bitmap.h"
+ #include "wx/dcmemory.h"
+ #include "wx/log.h"
+ #include "wx/icon.h"
#endif
+#include "wx/sysopt.h"
#include "wx/dcprint.h"
-#include "wx/msw/private.h"
+#include "wx/module.h"
+#include "wx/dynload.h"
+
+#ifdef wxHAVE_RAW_BITMAP
+#include "wx/rawbmp.h"
+#endif
#include <string.h>
#include <math.h>
-#if wxUSE_COMMON_DIALOGS
-#include <commdlg.h>
-#endif
+#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
-#ifndef __WIN32__
-#include <print.h>
+#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
+ #include <commdlg.h>
#endif
-#ifdef DrawText
-#undef DrawText
+#ifndef __WIN32__
+ #include <print.h>
#endif
-#ifdef GetCharWidth
-#undef GetCharWidth
+#ifndef AC_SRC_ALPHA
+#define AC_SRC_ALPHA 1
#endif
-#ifdef StartDoc
-#undef StartDoc
+/* Quaternary raster codes */
+#ifndef MAKEROP4
+#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore))
#endif
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
+IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
+
+// ---------------------------------------------------------------------------
+// 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
+
+// ----------------------------------------------------------------------------
+// macros for logical <-> device coords conversion
+// ----------------------------------------------------------------------------
+
+/*
+ We currently let Windows do all the translations itself so these macros are
+ not really needed (any more) but keep them to enhance readability of the
+ code by allowing to see where are the logical and where are the device
+ coordinates used.
+ */
+
+// logical to device
+#define XLOG2DEV(x) (x)
+#define YLOG2DEV(y) (y)
+
+// device to logical
+#define XDEV2LOG(x) (x)
+#define YDEV2LOG(y) (y)
+
+// ---------------------------------------------------------------------------
+// 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 w, int h,
+ HDC hdcSrc,
+ const wxBitmap& bmpSrc);
+
+#ifdef wxHAVE_RAW_BITMAP
+// our (limited) AlphaBlend() replacement
+static void
+wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, const wxBitmap& bmp);
#endif
-// Declarations local to this file
-
-#define YSCALE(y) (yorigin - (y))
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
-// #define wx_round(a) (int)((a)+.5)
+// instead of duplicating the same code which sets and then restores text
+// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes,
+// encapsulate this in a small helper class
-// Default constructor
-wxDC::wxDC(void)
+// wxColourChanger: changes the text colours in the ctor if required and
+// restores them in the dtor
+class wxColourChanger
{
- m_minX = 0; m_minY = 0; m_maxX = 0; m_maxY = 0;
- m_clipping = FALSE;
+public:
+ wxColourChanger(wxDC& dc);
+ ~wxColourChanger();
- m_filename = "";
- m_canvas = NULL;
- m_oldBitmap = 0;
- m_oldPen = 0;
- m_oldBrush = 0;
- m_oldFont = 0;
- m_oldPalette = 0;
- m_minX = 0; m_minY = 0; m_maxX = 0; m_maxY = 0;
- m_logicalOriginX = 0;
- m_logicalOriginY = 0;
- m_deviceOriginX = 0;
- m_deviceOriginY = 0;
- m_logicalScaleX = 1.0;
- m_logicalScaleY = 1.0;
- m_userScaleX = 1.0;
- m_userScaleY = 1.0;
- m_signX = 1;
- m_signY = 1;
- m_systemScaleX = 1.0;
- m_systemScaleY = 1.0;
- m_mappingMode = MM_TEXT;
- m_bOwnsDC = FALSE;
- m_hDC = 0;
- m_clipping = FALSE;
- m_ok = TRUE;
- m_windowExtX = VIEWPORT_EXTENT;
- m_windowExtY = VIEWPORT_EXTENT;
- m_logicalFunction = -1;
+private:
+ wxDC& m_dc;
- m_backgroundBrush = *wxWHITE_BRUSH;
+ COLORREF m_colFgOld, m_colBgOld;
- m_textForegroundColour = *wxBLACK;
- m_textBackgroundColour = *wxWHITE;
+ bool m_changed;
+};
- m_colour = wxColourDisplay();
+// this class saves the old stretch blit mode during its life time
+class StretchBltModeChanger
+{
+public:
+ StretchBltModeChanger(HDC hdc, int mode)
+ : m_hdc(hdc)
+ {
+ m_modeOld = ::SetStretchBltMode(m_hdc, mode);
+ if ( !m_modeOld )
+ wxLogLastError(_T("SetStretchBltMode"));
+ }
- m_hDCCount = 0;
-}
+ ~StretchBltModeChanger()
+ {
+ if ( !::SetStretchBltMode(m_hdc, m_modeOld) )
+ wxLogLastError(_T("SetStretchBltMode"));
+ }
+private:
+ const HDC m_hdc;
-wxDC::~wxDC(void)
-{
- if ( m_hDC != 0 ) {
- SelectOldObjects(m_hDC);
- if ( m_bOwnsDC ) {
- if ( m_canvas == NULL )
- ::DeleteDC((HDC)m_hDC);
- else
- ::ReleaseDC((HWND)m_canvas->GetHWND(), (HDC)m_hDC);
- }
- }
+ int m_modeOld;
+};
-}
+// ===========================================================================
+// implementation
+// ===========================================================================
-// 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)
+// ----------------------------------------------------------------------------
+// wxColourChanger
+// ----------------------------------------------------------------------------
+
+wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc)
{
- if (dc)
- {
- if (m_oldBitmap)
- {
- ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
- if (m_selectedBitmap.Ok())
- {
- m_selectedBitmap.SetSelectedInto(NULL);
- }
- }
- m_oldBitmap = 0 ;
- if (m_oldPen)
- {
- ::SelectObject((HDC) dc, (HPEN) m_oldPen);
- }
- m_oldPen = 0 ;
- if (m_oldBrush)
- {
- ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
- }
- m_oldBrush = 0 ;
- if (m_oldFont)
+ const wxBrush& brush = dc.GetBrush();
+ if ( brush.Ok() && brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
{
- ::SelectObject((HDC) dc, (HFONT) m_oldFont);
+ HDC hdc = GetHdcOf(dc);
+ m_colFgOld = ::GetTextColor(hdc);
+ m_colBgOld = ::GetBkColor(hdc);
+
+ // note that Windows convention is opposite to wxWindows one, this is
+ // why text colour becomes the background one and vice versa
+ const wxColour& colFg = dc.GetTextForeground();
+ if ( colFg.Ok() )
+ {
+ ::SetBkColor(hdc, colFg.GetPixel());
+ }
+
+ const wxColour& colBg = dc.GetTextBackground();
+ if ( colBg.Ok() )
+ {
+ ::SetTextColor(hdc, colBg.GetPixel());
+ }
+
+ SetBkMode(hdc,
+ dc.GetBackgroundMode() == wxTRANSPARENT ? TRANSPARENT
+ : OPAQUE);
+
+ // flag which telsl us to undo changes in the dtor
+ m_changed = TRUE;
}
- m_oldFont = 0 ;
- if (m_oldPalette)
+ else
{
- ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
+ // nothing done, nothing to undo
+ m_changed = FALSE;
}
- m_oldPalette = 0 ;
- }
-
- m_brush = wxNullBrush ;
- m_pen = wxNullPen;
- m_palette = wxNullPalette;
- m_font = wxNullFont;
- m_backgroundBrush = wxNullBrush;
- m_selectedBitmap = wxNullBitmap;
}
-void wxDC::SetClippingRegion(long cx, long cy, long cw, long ch)
+wxColourChanger::~wxColourChanger()
{
- m_clipping = TRUE;
- m_clipX1 = (int)cx;
- m_clipY1 = (int)cy;
- m_clipX2 = (int)(cx + cw);
- m_clipY2 = (int)(cy + ch);
+ if ( m_changed )
+ {
+ // restore the colours we changed
+ HDC hdc = GetHdcOf(m_dc);
- DoClipping((WXHDC) m_hDC);
+ ::SetBkMode(hdc, TRANSPARENT);
+ ::SetTextColor(hdc, m_colFgOld);
+ ::SetBkColor(hdc, m_colBgOld);
+ }
}
-void wxDC::DoClipping(WXHDC dc)
+// ---------------------------------------------------------------------------
+// wxDC
+// ---------------------------------------------------------------------------
+
+// Default constructor
+wxDC::wxDC()
{
- if (m_clipping && dc)
- {
- IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1),
- XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2));
- }
+ 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;
}
-void wxDC::DestroyClippingRegion(void)
+wxDC::~wxDC()
{
- if (m_clipping && m_hDC)
- {
- HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
- SelectClipRgn((HDC) m_hDC, rgn);
- DeleteObject(rgn);
- }
- m_clipping = FALSE;
+ if ( m_hDC != 0 )
+ {
+ SelectOldObjects(m_hDC);
+
+ // if we own the HDC, we delete it, otherwise we just release it
+
+ if ( m_bOwnsDC )
+ {
+ ::DeleteDC(GetHdc());
+ }
+ else // we don't own our HDC
+ {
+ if (m_canvas)
+ {
+ ::ReleaseDC(GetHwndOf(m_canvas), GetHdc());
+ }
+ else
+ {
+ // Must have been a wxScreenDC
+ ::ReleaseDC((HWND) NULL, GetHdc());
+ }
+ }
+ }
}
-bool wxDC::CanDrawBitmap(void) const
+// 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)
{
- return TRUE;
+ if (dc)
+ {
+ if (m_oldBitmap)
+ {
+ ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
+#ifdef __WXDEBUG__
+ if (m_selectedBitmap.Ok())
+ {
+ m_selectedBitmap.SetSelectedInto(NULL);
+ }
+#endif
+ }
+ m_oldBitmap = 0;
+ if (m_oldPen)
+ {
+ ::SelectObject((HDC) dc, (HPEN) m_oldPen);
+ }
+ m_oldPen = 0;
+ if (m_oldBrush)
+ {
+ ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
+ }
+ m_oldBrush = 0;
+ if (m_oldFont)
+ {
+ ::SelectObject((HDC) dc, (HFONT) m_oldFont);
+ }
+ m_oldFont = 0;
+
+#if wxUSE_PALETTE
+ if (m_oldPalette)
+ {
+ ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, FALSE);
+ }
+ m_oldPalette = 0;
+#endif // wxUSE_PALETTE
+ }
+
+ m_brush = wxNullBrush;
+ m_pen = wxNullPen;
+#if wxUSE_PALETTE
+ m_palette = wxNullPalette;
+#endif // wxUSE_PALETTE
+ m_font = wxNullFont;
+ m_backgroundBrush = wxNullBrush;
+ m_selectedBitmap = wxNullBitmap;
}
-bool wxDC::CanGetTextExtent(void) const
-{
- // What sort of display is it?
- int technology = ::GetDeviceCaps((HDC) m_hDC, TECHNOLOGY);
+// ---------------------------------------------------------------------------
+// clipping
+// ---------------------------------------------------------------------------
- bool ok;
+void wxDC::UpdateClipBox()
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- if (technology != DT_RASDISPLAY && technology != DT_RASPRINTER)
- ok = FALSE;
- else ok = TRUE;
+ RECT rect;
+ ::GetClipBox(GetHdc(), &rect);
- return ok;
+ m_clipX1 = (wxCoord) XDEV2LOG(rect.left);
+ m_clipY1 = (wxCoord) YDEV2LOG(rect.top);
+ m_clipX2 = (wxCoord) XDEV2LOG(rect.right);
+ m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
}
-void wxDC::SetPalette(const wxPalette& palette)
+// common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion()
+void wxDC::SetClippingHrgn(WXHRGN hrgn)
{
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldPalette)
- {
- ::SelectPalette((HDC) m_hDC, (HPALETTE) m_oldPalette, TRUE);
- m_oldPalette = 0;
- }
+ wxCHECK_RET( hrgn, wxT("invalid clipping region") );
- m_palette = m_palette;
+#ifdef __WXMICROWIN__
+ if (!GetHdc()) return;
+#endif // __WXMICROWIN__
- if (!m_palette.Ok())
- {
- // Setting a NULL colourmap is a way of restoring
- // the original colourmap
- if (m_oldPalette)
+ // 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__
+ RECT rectClip;
+ if ( !::GetClipBox(GetHdc(), &rectClip) )
+ return;
+
+ HRGN hrgnDest = ::CreateRectRgn(0, 0, 0, 0);
+ HRGN hrgnClipOld = ::CreateRectRgn(rectClip.left, rectClip.top,
+ rectClip.right, rectClip.bottom);
+
+ if ( ::CombineRgn(hrgnDest, hrgnClipOld, (HRGN)hrgn, RGN_AND) != ERROR )
{
- ::SelectPalette((HDC) m_hDC, (HPALETTE) m_oldPalette, TRUE);
- m_oldPalette = 0;
+ ::SelectClipRgn(GetHdc(), hrgnDest);
}
- return;
- }
-
- if (m_palette.Ok() && m_palette.GetHPALETTE())
- {
- HPALETTE oldPal = ::SelectPalette((HDC) m_hDC, (HPALETTE) m_palette.GetHPALETTE(), TRUE);
- if (!m_oldPalette)
- m_oldPalette = (WXHPALETTE) oldPal;
-
- ::RealizePalette((HDC) m_hDC);
- }
-}
+ ::DeleteObject(hrgnClipOld);
+ ::DeleteObject(hrgnDest);
+#else // Win32
+ if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR )
+ {
+ wxLogLastError(_T("ExtSelectClipRgn"));
-void wxDC::Clear(void)
-{
- RECT rect;
- if (m_canvas)
- GetClientRect((HWND) m_canvas->GetHWND(), &rect);
- else if (m_selectedBitmap.Ok())
- {
- rect.left = 0; rect.top = 0;
- rect.right = m_selectedBitmap.GetWidth();
- rect.bottom = m_selectedBitmap.GetHeight();
- }
- (void) ::SetMapMode((HDC) m_hDC, MM_TEXT);
+ return;
+ }
+#endif // Win16/32
- DWORD colour = GetBkColor((HDC) m_hDC);
- HBRUSH brush = CreateSolidBrush(colour);
- FillRect((HDC) m_hDC, &rect, brush);
- DeleteObject(brush);
+ m_clipping = TRUE;
- ::SetMapMode((HDC) m_hDC, MM_ANISOTROPIC);
- ::SetViewportExtEx((HDC) m_hDC, VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
- ::SetWindowExtEx((HDC) m_hDC, m_windowExtX, m_windowExtY, NULL);
- ::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
- ::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
+ UpdateClipBox();
}
-void wxDC::FloodFill(long x, long y, const wxColour& col, int style)
+void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
- (void)ExtFloodFill((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
- col.GetPixel(),
- style==wxFLOOD_SURFACE?
- FLOODFILLSURFACE:FLOODFILLBORDER
- );
+ // the region coords are always the device ones, so do the translation
+ // manually
+ //
+ // FIXME: possible +/-1 error here, to check!
+ HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x),
+ LogicalToDeviceY(y),
+ LogicalToDeviceX(x + w),
+ LogicalToDeviceY(y + h));
+ if ( !hrgn )
+ {
+ wxLogLastError(_T("CreateRectRgn"));
+ }
+ else
+ {
+ SetClippingHrgn((WXHRGN)hrgn);
- CalcBoundingBox(x, y);
+ ::DeleteObject(hrgn);
+ }
}
-bool wxDC::GetPixel(long x, long y, wxColour *col) const
+void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
{
- // added by steve 29.12.94 (copied from DrawPoint)
- // returns TRUE for pixels in the color of the current pen
- // and FALSE for all other pixels colors
- // if col is non-NULL return the color of the pixel
-
- // get the color of the pixel
- COLORREF pixelcolor = ::GetPixel((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y));
- // get the color of the pen
- COLORREF pencolor = 0x00ffffff;
- if (m_pen.Ok())
- {
- pencolor = m_pen.GetColour().GetPixel() ;
- }
-
- // return the color of the pixel
- if(col)
- col->Set(GetRValue(pixelcolor),GetGValue(pixelcolor),GetBValue(pixelcolor));
-
- // check, if color of the pixels is the same as the color
- // of the current pen
- return(pixelcolor==pencolor);
+ SetClippingHrgn(region.GetHRGN());
}
-void wxDC::CrossHair(long x, long y)
+void wxDC::DestroyClippingRegion()
{
- // We suppose that our screen is 2000x2000 max.
- long x1 = x-2000;
- long y1 = y-2000;
- long x2 = x+2000;
- long y2 = y+2000;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- (void)MoveToEx((HDC) m_hDC, XLOG2DEV(x1), YLOG2DEV(y), NULL);
- (void)LineTo((HDC) m_hDC, XLOG2DEV(x2), YLOG2DEV(y));
+ if (m_clipping && m_hDC)
+ {
+ // 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
+ // DestroyClippingRegion.
+ HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
+ ::SelectClipRgn(GetHdc(), rgn);
+ ::DeleteObject(rgn);
+ }
+
+ m_clipping = FALSE;
+}
- (void)MoveToEx((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y1), NULL);
- (void)LineTo((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y2));
+// ---------------------------------------------------------------------------
+// query capabilities
+// ---------------------------------------------------------------------------
- CalcBoundingBox(x1, y1);
- CalcBoundingBox(x2, y2);
+bool wxDC::CanDrawBitmap() const
+{
+ return TRUE;
}
-void wxDC::DrawLine(long x1, long y1, long x2, long y2)
+bool wxDC::CanGetTextExtent() const
{
- (void)MoveToEx((HDC) m_hDC, XLOG2DEV(x1), YLOG2DEV(y1), NULL);
- (void)LineTo((HDC) m_hDC, XLOG2DEV(x2), YLOG2DEV(y2));
+#ifdef __WXMICROWIN__
+ // TODO Extend MicroWindows' GetDeviceCaps function
+ return TRUE;
+#else
+ // What sort of display is it?
+ int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
- /* MATTHEW: [6] New normalization */
-#if WX_STANDARD_GRAPHICS
- (void)LineTo((HDC) m_hDC, XLOG2DEV(x2) + 1, YLOG2DEV(y2));
+ return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
#endif
-
- CalcBoundingBox(x1, y1);
- CalcBoundingBox(x2, y2);
-}
-
-void wxDC::DrawArc(long x1,long y1,long x2,long y2, long xc, long yc)
-{
- double dx = xc-x1 ;
- double dy = yc-y1 ;
- double radius = (double)sqrt(dx*dx+dy*dy) ;;
- if (x1==x2 && x2==y2)
- {
- DrawEllipse(xc,yc,(double)(radius*2.0),(double)(radius*2)) ;
- return ;
- }
-
- long xx1 = XLOG2DEV(x1) ;
- long yy1 = YLOG2DEV(y1) ;
- long xx2 = XLOG2DEV(x2) ;
- long yy2 = YLOG2DEV(y2) ;
- long xxc = XLOG2DEV(xc) ;
- long yyc = YLOG2DEV(yc) ;
- long ray = (long) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1))) ;
-
- (void)MoveToEx((HDC) m_hDC, (int) xx1, (int) yy1, NULL);
- long xxx1 = (long) (xxc-ray);
- long yyy1 = (long) (yyc-ray);
- long xxx2 = (long) (xxc+ray);
- long yyy2 = (long) (yyc+ray);
- if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT)
- {
- // Have to add 1 to bottom-right corner of rectangle
- // to make semi-circles look right (crooked line otherwise).
- // Unfortunately this is not a reliable method, depends
- // on the size of shape.
- // TODO: figure out why this happens!
- Pie((HDC) m_hDC,xxx1,yyy1,xxx2+1,yyy2+1,
- xx1,yy1,xx2,yy2) ;
- }
- else
- Arc((HDC) m_hDC,xxx1,yyy1,xxx2,yyy2,
- xx1,yy1,xx2,yy2) ;
-
- CalcBoundingBox((xc-radius), (yc-radius));
- CalcBoundingBox((xc+radius), (yc+radius));
}
-void wxDC::DrawPoint(long x, long y)
+int wxDC::GetDepth() const
{
- COLORREF color = 0x00ffffff;
- if (m_pen.Ok())
- {
- color = m_pen.GetColour().GetPixel() ;
- }
-
- SetPixel((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), color);
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return 16;
+#endif
- CalcBoundingBox(x, y);
+ return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
}
-void wxDC::DrawPolygon(int n, wxPoint points[], long xoffset, long yoffset,int fillStyle)
+// ---------------------------------------------------------------------------
+// drawing
+// ---------------------------------------------------------------------------
+
+void wxDC::Clear()
{
- // Do things less efficiently if we have offsets
- if (xoffset != 0 || yoffset != 0)
- {
- POINT *cpoints = new POINT[n];
- int i;
- for (i = 0; i < n; i++)
- {
- cpoints[i].x = (int)(points[i].x + xoffset);
- cpoints[i].y = (int)(points[i].y + yoffset);
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ RECT rect;
+ if ( m_canvas )
+ {
+ GetClientRect((HWND) m_canvas->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())
+ return;
+
+ rect.left = 0; rect.top = 0;
+ rect.right = m_selectedBitmap.GetWidth();
+ rect.bottom = m_selectedBitmap.GetHeight();
}
- int prev = SetPolyFillMode((HDC) m_hDC,fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING) ;
- (void)Polygon((HDC) m_hDC, cpoints, n);
- SetPolyFillMode((HDC) m_hDC,prev) ;
- delete[] cpoints;
- }
- else
- {
- int i;
- for (i = 0; i < n; i++)
- CalcBoundingBox(points[i].x, points[i].y);
- int prev = SetPolyFillMode((HDC) m_hDC,fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING) ;
- (void)Polygon((HDC) m_hDC, (POINT*) points, n);
- SetPolyFillMode((HDC) m_hDC,prev) ;
- }
-}
+ (void) ::SetMapMode(GetHdc(), MM_TEXT);
-void wxDC::DrawLines(int n, wxPoint points[], long xoffset, long yoffset)
-{
- // Do things less efficiently if we have offsets
- if (xoffset != 0 || yoffset != 0)
- {
- POINT *cpoints = new POINT[n];
- int i;
- for (i = 0; i < n; i++)
- {
- cpoints[i].x = (int)(points[i].x + xoffset);
- cpoints[i].y = (int)(points[i].y + yoffset);
-
- CalcBoundingBox(cpoints[i].x, cpoints[i].y);
- }
- (void)Polyline((HDC) m_hDC, cpoints, n);
- delete[] cpoints;
- }
- else
- {
- int i;
- for (i = 0; i < n; i++)
- CalcBoundingBox(points[i].x, points[i].y);
-
- (void)Polyline((HDC) m_hDC, (POINT*) points, n);
- }
-}
-
-void wxDC::DrawRectangle(long x, long y, long width, long height)
-{
- long x2 = x + width;
- long y2 = y + height;
+ DWORD colour = ::GetBkColor(GetHdc());
+ HBRUSH brush = ::CreateSolidBrush(colour);
+ ::FillRect(GetHdc(), &rect, brush);
+ ::DeleteObject(brush);
-/* MATTHEW: [6] new normalization */
-#if WX_STANDARD_GRAPHICS
- bool do_brush, do_pen;
+ int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
+ height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
- do_brush = m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT;
- do_pen = m_pen.Ok() && m_pen.GetStyle() != wxTRANSPARENT;
+ ::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);
+}
- if (do_brush) {
- HPEN orig_pen = NULL;
+bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return FALSE;
+#endif
- if (do_pen || !m_pen.Ok())
- orig_pen = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN) ::GetStockObject(NULL_PEN));
+ bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
+ col.GetPixel(),
+ style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
+ : FLOODFILLBORDER) ) ;
+ if (!success)
+ {
+ // quoting from the MSDN docs:
+ //
+ // Following are some of the reasons this function might fail:
+ //
+ // * The filling could not be completed.
+ // * The specified point has the boundary color specified by the
+ // crColor parameter (if FLOODFILLBORDER was requested).
+ // * The specified point does not have the color specified by
+ // crColor (if FLOODFILLSURFACE was requested)
+ // * The point is outside the clipping region that is, it is not
+ // visible on the device.
+ //
+ wxLogLastError(wxT("ExtFloodFill"));
+ }
- (void)Rectangle((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
- XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1);
+ CalcBoundingBox(x, y);
+
+ return success;
+}
- if (do_pen || !m_pen.Ok())
- ::SelectObject((HDC) m_hDC , orig_pen);
- }
- if (do_pen) {
- HBRUSH orig_brush = NULL;
+bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return FALSE;
+#endif
- if (do_brush || !m_brush.Ok())
- orig_brush = (HBRUSH) ::SelectObject((HDC) m_hDC, (HBRUSH) ::GetStockObject(NULL_BRUSH));
+ wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") );
- (void)Rectangle((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y),
- XLOG2DEV(x2), YLOG2DEV(y2));
+ // get the color of the pixel
+ COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
- if (do_brush || !m_brush.Ok())
- ::SelectObject((HDC) m_hDC, orig_brush);
- }
-#else
- (void)Rectangle((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
-#endif
+ wxRGBToColour(*col, pixelcolor);
- CalcBoundingBox(x, y);
- CalcBoundingBox(x2, y2);
+ return TRUE;
}
-void wxDC::DrawRoundedRectangle(long x, long y, long width, long height, double radius)
+void wxDC::DoCrossHair(wxCoord x, wxCoord y)
{
- // Now, a negative radius value is interpreted to mean
- // 'the proportion of the smallest X or Y dimension'
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- if (radius < 0.0)
- {
- double smallest = 0.0;
- if (width < height)
- smallest = width;
- else
- smallest = height;
- radius = (- radius * smallest);
- }
+ wxCoord x1 = x-VIEWPORT_EXTENT;
+ wxCoord y1 = y-VIEWPORT_EXTENT;
+ wxCoord x2 = x+VIEWPORT_EXTENT;
+ wxCoord y2 = y+VIEWPORT_EXTENT;
- long x2 = (x+width);
- long y2 = (y+height);
+ (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL);
+ (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y));
- (void)RoundRect((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
- YLOG2DEV(y2), 2*XLOG2DEV(radius), 2*YLOG2DEV(radius));
+ (void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL);
+ (void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2));
- CalcBoundingBox(x, y);
- CalcBoundingBox(x2, y2);
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
}
-void wxDC::DrawEllipse(long x, long y, long width, long height)
+void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{
- long x2 = (x+width);
- long y2 = (y+height);
-
- (void)Ellipse((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- CalcBoundingBox(x, y);
- CalcBoundingBox(x2, y2);
-}
+ (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL);
+ (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2));
-// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
-void wxDC::DrawEllipticArc(long x,long y,long w,long h,double sa,double ea)
-{
- long x2 = (x+w);
- long y2 = (y+h);
-
- const double deg2rad = 3.14159265359 / 180.0;
- int rx1 = XLOG2DEV(x+w/2);
- int ry1 = YLOG2DEV(y+h/2);
- int rx2 = rx1;
- int ry2 = ry1;
- rx1 += (int)(100.0 * abs(w) * cos(sa * deg2rad));
- ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa * deg2rad));
- rx2 += (int)(100.0 * abs(w) * cos(ea * deg2rad));
- ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea * deg2rad));
-
- // draw pie with NULL_PEN first and then outline otherwise a line is
- // drawn from the start and end points to the centre
- HPEN orig_pen = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN) ::GetStockObject(NULL_PEN));
- if (m_signY > 0)
- {
- (void)Pie((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
- rx1, ry1, rx2, ry2);
- }
- else
- {
- (void)Pie((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
- rx1, ry1-1, rx2, ry2-1);
- }
- ::SelectObject((HDC) m_hDC, orig_pen);
- (void)Arc((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
- rx1, ry1, rx2, ry2);
-
- CalcBoundingBox(x, y);
- CalcBoundingBox(x2, y2);
-}
-
-void wxDC::DrawIcon(const wxIcon& icon, long x, long y)
-{
- ::DrawIcon((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON());
- CalcBoundingBox(x, y);
- CalcBoundingBox(x+icon.GetWidth(), y+icon.GetHeight());
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
}
-void wxDC::SetFont(const wxFont& the_font)
+// 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,
+ wxCoord x2, wxCoord y2,
+ wxCoord xc, wxCoord yc)
{
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldFont)
- {
- ::SelectObject((HDC) m_hDC, (HFONT) m_oldFont);
- m_oldFont = 0;
- }
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- m_font = the_font;
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- if (!the_font.Ok())
- {
- if (m_oldFont)
- ::SelectObject((HDC) m_hDC, (HFONT) m_oldFont);
- m_oldFont = 0 ;
- }
+ double dx = xc - x1;
+ double dy = yc - y1;
+ double radius = (double)sqrt(dx*dx+dy*dy);
+ wxCoord r = (wxCoord)radius;
- if (m_font.Ok() && m_font.GetResourceHandle())
- {
- HFONT f = (HFONT) ::SelectObject((HDC) m_hDC, (HFONT) m_font.GetResourceHandle());
- if (f == NULL)
+ // treat the special case of full circle separately
+ if ( x1 == x2 && y1 == y2 )
{
- wxDebugMsg("::SelectObject failed in wxDC::SetFont.");
+ DrawEllipse(xc - r, yc - r, 2*r, 2*r);
+ return;
}
- if (!m_oldFont)
- m_oldFont = (WXHFONT) f;
- }
-}
-
-void wxDC::SetPen(const wxPen& pen)
-{
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldPen)
- {
- ::SelectObject((HDC) m_hDC, (HPEN) m_oldPen);
- m_oldPen = 0;
- }
- m_pen = pen;
+ wxCoord xx1 = XLOG2DEV(x1);
+ wxCoord yy1 = YLOG2DEV(y1);
+ wxCoord xx2 = XLOG2DEV(x2);
+ wxCoord yy2 = YLOG2DEV(y2);
+ wxCoord xxc = XLOG2DEV(xc);
+ wxCoord yyc = YLOG2DEV(yc);
+ wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1)));
- if (!m_pen.Ok())
- {
- if (m_oldPen)
- ::SelectObject((HDC) m_hDC, (HPEN) m_oldPen);
- m_oldPen = 0 ;
- }
+ wxCoord xxx1 = (wxCoord) (xxc-ray);
+ wxCoord yyy1 = (wxCoord) (yyc-ray);
+ wxCoord xxx2 = (wxCoord) (xxc+ray);
+ wxCoord yyy2 = (wxCoord) (yyc+ray);
- if (m_pen.Ok())
- {
- if (m_pen.GetResourceHandle())
+ if ( m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT )
+ {
+ // Have to add 1 to bottom-right corner of rectangle
+ // to make semi-circles look right (crooked line otherwise).
+ // Unfortunately this is not a reliable method, depends
+ // on the size of shape.
+ // TODO: figure out why this happens!
+ Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2);
+ }
+ else
{
- HPEN p = (HPEN) ::SelectObject((HDC) m_hDC, (HPEN)m_pen.GetResourceHandle()) ;
- if (!m_oldPen)
- m_oldPen = (WXHPEN) p;
+ Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2);
}
- }
+
+ CalcBoundingBox(xc - r, yc - r);
+ CalcBoundingBox(xc + r, yc + r);
}
-void wxDC::SetBrush(const wxBrush& brush)
+void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
+ wxCoord width, wxCoord height)
{
- // Set the old object temporarily, in case the assignment deletes an object
- // that's not yet selected out.
- if (m_oldBrush)
- {
- ::SelectObject((HDC) m_hDC, (HBRUSH) m_oldBrush);
- m_oldBrush = 0;
- }
-
- m_brush = brush;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- if (!m_brush.Ok())
- {
- if (m_oldBrush)
- ::SelectObject((HDC) m_hDC, (HBRUSH) m_oldBrush);
- m_oldBrush = 0 ;
- }
+ wxCoord x2 = x1 + width,
+ y2 = y1 + height;
+
+#if defined(__WIN32__) && !defined(__SYMANTEC__) && !defined(__WXMICROWIN__)
+ RECT rect;
+ rect.left = x1;
+ rect.top = y1;
+ rect.right = x2;
+ rect.bottom = y2;
+
+ 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
+
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
+}
+
+void wxDC::DoDrawPoint(wxCoord x, wxCoord y)
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- if (m_brush.Ok())
- {
- if (m_brush.GetResourceHandle())
+ COLORREF color = 0x00ffffff;
+ if (m_pen.Ok())
{
- HBRUSH b = 0;
- b = (HBRUSH) ::SelectObject((HDC) m_hDC, (HBRUSH)m_brush.GetResourceHandle()) ;
- if (!m_oldBrush)
- m_oldBrush = (WXHBRUSH) b;
+ color = m_pen.GetColour().GetPixel();
}
- }
+
+ SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
+
+ CalcBoundingBox(x, y);
}
-void wxDC::DrawText(const wxString& text, long x, long y, bool use16bit)
+void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
{
- // Should be unnecessary: SetFont should have done this already.
-#if 0
- if (m_font.Ok() && m_font.GetResourceHandle())
- {
- HFONT f = (HFONT) ::SelectObject((HDC) m_hDC, (HFONT) m_font.GetResourceHandle());
- if (!m_oldFont)
- m_oldFont = (WXHFONT) f;
- }
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
#endif
- if (m_textForegroundColour.Ok())
- SetTextColor((HDC) m_hDC, m_textForegroundColour.GetPixel() ) ;
-
- DWORD old_background = 0;
- if (m_textBackgroundColour.Ok())
- {
- old_background = SetBkColor((HDC) m_hDC, m_textBackgroundColour.GetPixel() ) ;
- }
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- if (m_backgroundMode == wxTRANSPARENT)
- SetBkMode((HDC) m_hDC, TRANSPARENT);
- else
- SetBkMode((HDC) m_hDC, OPAQUE);
-
- (void)TextOut((HDC) m_hDC, XLOG2DEV(x), YLOG2DEV(y), (char *) (const char *)text, strlen((const char *)text));
-
- if (m_textBackgroundColour.Ok())
- (void)SetBkColor((HDC) m_hDC, old_background);
-
- CalcBoundingBox(x, y);
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
+ {
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
- long w, h;
- GetTextExtent(text, &w, &h);
- CalcBoundingBox((x + w), (y + h));
-}
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+ (void)Polygon(GetHdc(), cpoints, n);
+ SetPolyFillMode(GetHdc(),prev);
+ delete[] cpoints;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < n; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
-void wxDC::SetBackground(const wxBrush& brush)
-{
- 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->m_backgroundTransparent = TRUE;
- }
- else
- {
- m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
- m_canvas->m_backgroundTransparent = FALSE;
- }
- }
- }
- COLORREF new_color = m_backgroundBrush.GetColour().GetPixel() ;
- {
- (void)SetBkColor((HDC) m_hDC, new_color);
- }
+ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
+ (void)Polygon(GetHdc(), (POINT*) points, n);
+ SetPolyFillMode(GetHdc(),prev);
+ }
}
-void wxDC::SetBackgroundMode(int mode)
+void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
{
- m_backgroundMode = mode;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- if (m_backgroundMode == wxTRANSPARENT)
- ::SetBkMode((HDC) m_hDC, TRANSPARENT);
- else
- ::SetBkMode((HDC) m_hDC, OPAQUE);
-}
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
+ {
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
-void wxDC::SetLogicalFunction(int function)
-{
- m_logicalFunction = function;
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+ (void)Polyline(GetHdc(), cpoints, n);
+ delete[] cpoints;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < n; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
- SetRop((WXHDC) m_hDC);
+ (void)Polyline(GetHdc(), (POINT*) points, n);
+ }
}
-void wxDC::SetRop(WXHDC dc)
+void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
- if (!dc || m_logicalFunction < 0)
- return;
-
- int c_rop;
- // These may be wrong
- switch (m_logicalFunction)
- {
-// case wxXOR: c_rop = R2_XORPEN; break;
- case wxXOR: c_rop = R2_NOTXORPEN; break;
- case wxINVERT: c_rop = R2_NOT; break;
- case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break;
- case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break;
- case wxCLEAR: c_rop = R2_WHITE; break;
- case wxSET: c_rop = R2_BLACK; break;
- case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break;
- case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break;
- case wxAND: c_rop = R2_MASKPEN; break;
- case wxOR: c_rop = R2_MERGEPEN; break;
- case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break;
- case wxEQUIV:
- case wxNAND:
- case wxCOPY:
- default:
- c_rop = R2_COPYPEN; break;
- }
- SetROP2((HDC) dc, c_rop);
-}
-
-bool wxDC::StartDoc(const wxString& message)
-{
- if (!this->IsKindOf(CLASSINFO(wxPrinterDC)))
- return TRUE;
-
- DOCINFO docinfo;
- docinfo.cbSize = sizeof(DOCINFO);
- docinfo.lpszDocName = (const char *)message;
-
- if (m_filename.IsEmpty())
- docinfo.lpszOutput = NULL;
- else
- docinfo.lpszOutput = (const char *)m_filename;
-
-#if defined(__WIN95__)
- docinfo.lpszDatatype = NULL;
- docinfo.fwType = 0;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
#endif
- if (!m_hDC)
- return FALSE;
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- int ret =
-#ifndef __WIN32__
- ::StartDoc((HDC) m_hDC, &docinfo);
-#else
-#ifdef UNICODE
- ::StartDocW((HDC) m_hDC, &docinfo);
-#else
- ::StartDocA((HDC) m_hDC, &docinfo);
-#endif
-#endif
+ wxCoord x2 = x + width;
+ wxCoord y2 = y + height;
- if (ret <= 0)
- {
- DWORD lastError = GetLastError();
- wxDebugMsg("wxDC::StartDoc failed with error: %d\n", lastError);
- }
- return (ret > 0);
-}
+ 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
-void wxDC::EndDoc(void)
-{
- if (!this->IsKindOf(CLASSINFO(wxPrinterDC)))
- return;
- if (m_hDC) ::EndDoc((HDC) m_hDC);
-}
+ // I wonder if this shouldn´t be done after the LOG2DEV() conversions. RR.
+ if ( m_pen.GetStyle() == wxTRANSPARENT )
+ {
+ x2++;
+ y2++;
+ }
-void wxDC::StartPage(void)
-{
- if (!this->IsKindOf(CLASSINFO(wxPrinterDC)))
- return;
- if (m_hDC)
- ::StartPage((HDC) m_hDC);
-}
+ (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
+ }
-void wxDC::EndPage(void)
-{
- if (!this->IsKindOf(CLASSINFO(wxPrinterDC)))
- return;
- if (m_hDC)
- ::EndPage((HDC) m_hDC);
+
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
}
-long wxDC::GetCharHeight(void) const
+void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
{
- TEXTMETRIC lpTextMetric;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- GetTextMetrics((HDC) m_hDC, &lpTextMetric);
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- return YDEV2LOGREL(lpTextMetric.tmHeight);
-}
+ // Now, a negative radius value is interpreted to mean
+ // 'the proportion of the smallest X or Y dimension'
-long wxDC::GetCharWidth(void) const
-{
- TEXTMETRIC lpTextMetric;
+ if (radius < 0.0)
+ {
+ double smallest = 0.0;
+ if (width < height)
+ smallest = width;
+ else
+ smallest = height;
+ radius = (- radius * smallest);
+ }
+
+ wxCoord x2 = (x+width);
+ wxCoord y2 = (y+height);
+
+ // 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
+ if ( m_pen.GetStyle() == wxTRANSPARENT )
+ {
+ x2++;
+ y2++;
+ }
- GetTextMetrics((HDC) m_hDC, &lpTextMetric);
+ (void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
+ YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius)));
- return XDEV2LOGREL(lpTextMetric.tmAveCharWidth);
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
}
-void wxDC::GetTextExtent(const wxString& string, long *x, long *y,
- long *descent, long *externalLeading, wxFont *theFont, bool use16bit) const
+void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
- wxFont *fontToUse = (wxFont*) theFont;
- if (!fontToUse)
- fontToUse = (wxFont*) &m_font;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- SIZE sizeRect;
- TEXTMETRIC tm;
+ wxCoord x2 = (x+width);
+ wxCoord y2 = (y+height);
- GetTextExtentPoint((HDC) m_hDC, (char *)(const char *) string, strlen((char *)(const char *) string), &sizeRect);
- GetTextMetrics((HDC) m_hDC, &tm);
+ (void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
- if (x) *x = XDEV2LOGREL(sizeRect.cx);
- if (y) *y = YDEV2LOGREL(sizeRect.cy);
- if (descent) *descent = tm.tmDescent;
- if (externalLeading) *externalLeading = tm.tmExternalLeading;
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
}
-void wxDC::SetMapMode(int mode)
+// 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)
{
- m_mappingMode = mode;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- int pixel_width = 0;
- int pixel_height = 0;
- int mm_width = 0;
- int mm_height = 0;
+ wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
- pixel_width = GetDeviceCaps((HDC) m_hDC, HORZRES);
- pixel_height = GetDeviceCaps((HDC) m_hDC, VERTRES);
- mm_width = GetDeviceCaps((HDC) m_hDC, HORZSIZE);
- mm_height = GetDeviceCaps((HDC) m_hDC, VERTSIZE);
+ wxCoord x2 = x + w;
+ wxCoord y2 = y + h;
- if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0))
- {
- return;
- }
+ int rx1 = XLOG2DEV(x+w/2);
+ int ry1 = YLOG2DEV(y+h/2);
+ int rx2 = rx1;
+ int ry2 = ry1;
- double mm2pixelsX = pixel_width/mm_width;
- double mm2pixelsY = pixel_height/mm_height;
+ sa = DegToRad(sa);
+ ea = DegToRad(ea);
- switch (mode)
- {
- case MM_TWIPS:
- {
- m_logicalScaleX = (twips2mm * mm2pixelsX);
- m_logicalScaleY = (twips2mm * mm2pixelsY);
- break;
- }
- case MM_POINTS:
- {
- m_logicalScaleX = (pt2mm * mm2pixelsX);
- m_logicalScaleY = (pt2mm * mm2pixelsY);
- break;
- }
- case MM_METRIC:
- {
- m_logicalScaleX = mm2pixelsX;
- m_logicalScaleY = mm2pixelsY;
- break;
- }
- case MM_LOMETRIC:
+ rx1 += (int)(100.0 * abs(w) * cos(sa));
+ ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
+ rx2 += (int)(100.0 * abs(w) * cos(ea));
+ ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));
+
+ // 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));
+ if (m_signY > 0)
{
- m_logicalScaleX = (mm2pixelsX/10.0);
- m_logicalScaleY = (mm2pixelsY/10.0);
- break;
+ (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
+ rx1, ry1, rx2, ry2);
}
- default:
- case MM_TEXT:
+ else
{
- m_logicalScaleX = 1.0;
- m_logicalScaleY = 1.0;
- break;
+ (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
+ rx1, ry1-1, rx2, ry2-1);
}
- }
- if (::GetMapMode((HDC) m_hDC) != MM_ANISOTROPIC)
- ::SetMapMode((HDC) m_hDC, MM_ANISOTROPIC);
+ ::SelectObject(GetHdc(), hpenOld);
+
+ (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
+ rx1, ry1, rx2, ry2);
- SetViewportExtEx((HDC) m_hDC, VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
- m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT);
- m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT);
- ::SetWindowExtEx((HDC) m_hDC, m_windowExtX, m_windowExtY, NULL);
- ::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
- ::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
}
-void wxDC::SetUserScale(double x, double y)
+void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
{
- m_userScaleX = x;
- m_userScaleY = y;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- SetMapMode(m_mappingMode);
-}
+ wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") );
-void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
-{
- m_signX = xLeftRight ? 1 : -1;
- m_signY = yBottomUp ? -1 : 1;
+#ifdef __WIN32__
+ ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL);
+#else
+ ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon));
+#endif
- SetMapMode(m_mappingMode);
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight());
}
-void wxDC::SetSystemScale(double x, double y)
+void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
{
- m_systemScaleX = x;
- m_systemScaleY = y;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- SetMapMode(m_mappingMode);
-}
+ wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") );
-void wxDC::SetLogicalOrigin(long x, long y)
-{
- m_logicalOriginX = x;
- m_logicalOriginY = y;
+ int width = bmp.GetWidth(),
+ height = bmp.GetHeight();
- ::SetWindowOrgEx((HDC) m_hDC, (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
-}
+ HBITMAP hbmpMask = 0;
-void wxDC::SetDeviceOrigin(long x, long y)
+#if wxUSE_PALETTE
+ HPALETTE oldPal = 0;
+#endif // wxUSE_PALETTE
+
+ if ( bmp.HasAlpha() )
+ {
+ MemoryHDC hdcMem;
+ SelectInHDC select(hdcMem, GetHbitmapOf(bmp));
+
+ if ( AlphaBlt(GetHdc(), x, y, width, height, hdcMem, bmp) )
+ return;
+ }
+
+ if ( useMask )
+ {
+ wxMask *mask = bmp.GetMask();
+ if ( mask )
+ hbmpMask = (HBITMAP)mask->GetMaskBitmap();
+
+ if ( !hbmpMask )
+ {
+ // don't give assert here because this would break existing
+ // programs - just silently ignore useMask parameter
+ useMask = FALSE;
+ }
+ }
+ if ( useMask )
+ {
+#ifdef __WIN32__
+ // 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
+ // to be able to switch this on and off at runtime.
+ bool ok = FALSE;
+#if wxUSE_SYSTEM_OPTIONS
+ if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0)
+#endif
+ {
+ HDC cdc = GetHdc();
+ HDC hdcMem = ::CreateCompatibleDC(GetHdc());
+ HGDIOBJ hOldBitmap = ::SelectObject(hdcMem, GetHbitmapOf(bmp));
+#if wxUSE_PALETTE
+ wxPalette *pal = bmp.GetPalette();
+ if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
+ {
+ oldPal = ::SelectPalette(hdcMem, GetHpaletteOf(*pal), FALSE);
+ ::RealizePalette(hdcMem);
+ }
+#endif // wxUSE_PALETTE
+
+ ok = ::MaskBlt(cdc, x, y, width, height,
+ hdcMem, 0, 0,
+ hbmpMask, 0, 0,
+ MAKEROP4(SRCCOPY, DSTCOPY)) != 0;
+
+#if wxUSE_PALETTE
+ if (oldPal)
+ ::SelectPalette(hdcMem, oldPal, FALSE);
+#endif // wxUSE_PALETTE
+
+ ::SelectObject(hdcMem, hOldBitmap);
+ ::DeleteDC(hdcMem);
+ }
+
+ if ( !ok )
+#endif // Win32
+ {
+ // Rather than reproduce wxDC::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.SelectObject(wxNullBitmap);
+ }
+ }
+ else // no mask, just use BitBlt()
+ {
+ HDC cdc = GetHdc();
+ HDC memdc = ::CreateCompatibleDC( cdc );
+ HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
+
+ wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
+
+ COLORREF old_textground = ::GetTextColor(GetHdc());
+ COLORREF old_background = ::GetBkColor(GetHdc());
+ if (m_textForegroundColour.Ok())
+ {
+ ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
+ }
+ if (m_textBackgroundColour.Ok())
+ {
+ ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
+ }
+
+#if wxUSE_PALETTE
+ wxPalette *pal = bmp.GetPalette();
+ if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
+ {
+ oldPal = ::SelectPalette(memdc, GetHpaletteOf(*pal), FALSE);
+ ::RealizePalette(memdc);
+ }
+#endif // wxUSE_PALETTE
+
+ HGDIOBJ hOldBitmap = ::SelectObject( memdc, hbitmap );
+ ::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY);
+
+#if wxUSE_PALETTE
+ if (oldPal)
+ ::SelectPalette(memdc, oldPal, FALSE);
+#endif // wxUSE_PALETTE
+
+ ::SelectObject( memdc, hOldBitmap );
+ ::DeleteDC( memdc );
+
+ ::SetTextColor(GetHdc(), old_textground);
+ ::SetBkColor(GetHdc(), old_background);
+ }
+}
+
+void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
{
- m_deviceOriginX = x;
- m_deviceOriginY = y;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ DrawAnyText(text, x, y);
- ::SetViewportOrgEx((HDC) m_hDC, (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
+ // update the bounding box
+ CalcBoundingBox(x, y);
+
+ wxCoord w, h;
+ GetTextExtent(text, &w, &h);
+ CalcBoundingBox(x + w, y + h);
}
-long wxDC::DeviceToLogicalX(long x) const
+void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
{
- return (long) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX) - m_logicalOriginX) ;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ // prepare for drawing the text
+ if ( m_textForegroundColour.Ok() )
+ SetTextColor(GetHdc(), m_textForegroundColour.GetPixel());
+
+ DWORD old_background = 0;
+ if ( m_textBackgroundColour.Ok() )
+ {
+ old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
+ }
+
+ SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
+ : OPAQUE);
+
+ if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
+ text.c_str(), text.length()) == 0 )
+ {
+ wxLogLastError(wxT("TextOut"));
+ }
+
+ // 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() )
+ (void)SetBkColor(GetHdc(), old_background);
+
+ SetBkMode(GetHdc(), TRANSPARENT);
}
-long wxDC::DeviceToLogicalXRel(long x) const
+void wxDC::DoDrawRotatedText(const wxString& text,
+ wxCoord x, wxCoord y,
+ double angle)
{
- return (long) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX)) ;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ // 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() )
+ {
+ DoDrawText(text, x, y);
+ }
+#ifndef __WXMICROWIN__
+ else
+ {
+ // 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;
+ HFONT hfont = (HFONT)font.GetResourceHandle();
+ LOGFONT lf;
+ if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
+ {
+ wxLogLastError(wxT("GetObject(hfont)"));
+ }
+
+ // GDI wants the angle in tenth of degree
+ long angle10 = (long)(angle * 10);
+ lf.lfEscapement = angle10;
+ lf. lfOrientation = angle10;
+
+ hfont = ::CreateFontIndirect(&lf);
+ if ( !hfont )
+ {
+ wxLogLastError(wxT("CreateFont"));
+ }
+ else
+ {
+ HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont);
+
+ DrawAnyText(text, x, y);
+
+ (void)::SelectObject(GetHdc(), hfontOld);
+ (void)::DeleteObject(hfont);
+ }
+
+ // call the bounding box by adding all four vertices of the rectangle
+ // 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);
+
+ double rad = DegToRad(angle);
+
+ // "upper left" and "upper right"
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(h*sin(rad)));
+
+ // "bottom left" and "bottom right"
+ x += (wxCoord)(h*sin(rad));
+ y += (wxCoord)(h*cos(rad));
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x + wxCoord(h*sin(rad)), y + wxCoord(h*cos(rad)));
+ }
+#endif
}
-long wxDC::DeviceToLogicalY(long y) const
+// ---------------------------------------------------------------------------
+// set GDI objects
+// ---------------------------------------------------------------------------
+
+#if wxUSE_PALETTE
+
+void wxDC::DoSelectPalette(bool realize)
{
- return (long) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY) - m_logicalOriginY) ;
+#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_oldPalette)
+ {
+ ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, FALSE);
+ m_oldPalette = 0;
+ }
+
+ if ( m_palette.Ok() )
+ {
+ HPALETTE oldPal = ::SelectPalette(GetHdc(),
+ GetHpaletteOf(m_palette),
+ FALSE);
+ if (!m_oldPalette)
+ m_oldPalette = (WXHPALETTE) oldPal;
+
+ if (realize)
+ ::RealizePalette(GetHdc());
+ }
}
-long wxDC::DeviceToLogicalYRel(long y) const
+void wxDC::SetPalette(const wxPalette& palette)
{
- return (long) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY)) ;
+ if ( palette.Ok() )
+ {
+ m_palette = palette;
+ DoSelectPalette(TRUE);
+ }
}
-long wxDC::LogicalToDeviceX(long x) const
+void wxDC::InitializePalette()
{
- return (long) (floor((x) - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX + m_deviceOriginX) ;
+ 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->GetAncestorWithCustomPalette();
+
+ m_hasCustomPalette = win && win->HasCustomPalette();
+ if ( m_hasCustomPalette )
+ {
+ m_palette = win->GetPalette();
+
+ // turn on MSW translation for this palette
+ DoSelectPalette();
+ }
+ }
}
-long wxDC::LogicalToDeviceXRel(long x) const
+#endif // wxUSE_PALETTE
+
+void wxDC::SetFont(const wxFont& the_font)
{
- return (long) (floor(x)*m_logicalScaleX*m_userScaleX*m_signX*m_systemScaleX) ;
+#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_oldFont)
+ {
+ ::SelectObject(GetHdc(), (HFONT) m_oldFont);
+ m_oldFont = 0;
+ }
+
+ m_font = the_font;
+
+ if (!the_font.Ok())
+ {
+ if (m_oldFont)
+ ::SelectObject(GetHdc(), (HFONT) m_oldFont);
+ m_oldFont = 0;
+ }
+
+ if (m_font.Ok() && m_font.GetResourceHandle())
+ {
+ HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle());
+ if (f == (HFONT) NULL)
+ {
+ wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
+ }
+ if (!m_oldFont)
+ m_oldFont = (WXHFONT) f;
+ }
}
-long wxDC::LogicalToDeviceY(long y) const
+void wxDC::SetPen(const wxPen& pen)
{
- return (long) (floor((y) - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY + m_deviceOriginY);
+#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_oldPen)
+ {
+ ::SelectObject(GetHdc(), (HPEN) m_oldPen);
+ m_oldPen = 0;
+ }
+
+ m_pen = pen;
+
+ if (!m_pen.Ok())
+ {
+ if (m_oldPen)
+ ::SelectObject(GetHdc(), (HPEN) m_oldPen);
+ m_oldPen = 0;
+ }
+
+ if (m_pen.Ok())
+ {
+ if (m_pen.GetResourceHandle())
+ {
+ HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle());
+ if (!m_oldPen)
+ m_oldPen = (WXHPEN) p;
+ }
+ }
}
-long wxDC::LogicalToDeviceYRel(long y) const
+void wxDC::SetBrush(const wxBrush& brush)
{
- return (long) (floor(y)*m_logicalScaleY*m_userScaleY*m_signY*m_systemScaleY) ;
+#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;
+ }
+
+ m_brush = brush;
+
+ if (!m_brush.Ok())
+ {
+ if (m_oldBrush)
+ ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
+ m_oldBrush = 0;
+ }
+
+ if (m_brush.Ok())
+ {
+ // to make sure the brush is alligned with the logical coordinates
+ wxBitmap *stipple = m_brush.GetStipple();
+ if ( stipple && stipple->Ok() )
+ {
+#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
+ }
+
+ if ( m_brush.GetResourceHandle() )
+ {
+ HBRUSH b = 0;
+ b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle());
+ if (!m_oldBrush)
+ m_oldBrush = (WXHBRUSH) b;
+ }
+ }
}
-// This group of functions may not do any conversion
-// if m_scaleGDI is TRUE, since the HDC does the
-// conversion automatically.
+void wxDC::SetBackground(const wxBrush& brush)
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ m_backgroundBrush = brush;
-long wxDC::ImplDeviceToLogicalX(long x) const
+ if ( m_backgroundBrush.Ok() )
+ {
+ (void)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel());
+ }
+}
+
+void wxDC::SetBackgroundMode(int mode)
{
-// return (m_scaleGDI ? x : DeviceToLogicalX(x));
- return x;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ m_backgroundMode = mode;
+
+ // SetBackgroundColour now only refers to text background
+ // and m_backgroundMode is used there
}
-long wxDC::ImplDeviceToLogicalY(long y) const
+void wxDC::SetLogicalFunction(int function)
{
-// return (m_scaleGDI ? y : DeviceToLogicalY(y));
- return y;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ m_logicalFunction = function;
+
+ SetRop(m_hDC);
}
-long wxDC::ImplDeviceToLogicalXRel(long x) const
+void wxDC::SetRop(WXHDC dc)
{
-// return (m_scaleGDI ? x : DeviceToLogicalXRel(x));
- return x;
+ if ( !dc || m_logicalFunction < 0 )
+ return;
+
+ int rop;
+
+ switch (m_logicalFunction)
+ {
+ case wxCLEAR: rop = R2_BLACK; break;
+ case wxXOR: rop = R2_XORPEN; break;
+ case wxINVERT: rop = R2_NOT; break;
+ case wxOR_REVERSE: rop = R2_MERGEPENNOT; break;
+ case wxAND_REVERSE: rop = R2_MASKPENNOT; break;
+ case wxCOPY: rop = R2_COPYPEN; break;
+ case wxAND: rop = R2_MASKPEN; break;
+ case wxAND_INVERT: rop = R2_MASKNOTPEN; break;
+ case wxNO_OP: rop = R2_NOP; break;
+ case wxNOR: rop = R2_NOTMERGEPEN; break;
+ case wxEQUIV: rop = R2_NOTXORPEN; break;
+ case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break;
+ case wxOR_INVERT: rop = R2_MERGENOTPEN; break;
+ case wxNAND: rop = R2_NOTMASKPEN; break;
+ case wxOR: rop = R2_MERGEPEN; break;
+ case wxSET: rop = R2_WHITE; break;
+
+ default:
+ wxFAIL_MSG( wxT("unsupported logical function") );
+ return;
+ }
+
+ SetROP2(GetHdc(), rop);
}
-long wxDC::ImplDeviceToLogicalYRel(long y) const
+bool wxDC::StartDoc(const wxString& WXUNUSED(message))
{
-// return (m_scaleGDI ? y : DeviceToLogicalYRel(y));
- return y;
+ // We might be previewing, so return TRUE to let it continue.
+ return TRUE;
}
-long wxDC::ImplLogicalToDeviceX(long x) const
+void wxDC::EndDoc()
{
-// return (m_scaleGDI ? (floor(double(x))) : LogicalToDeviceX(x));
- return x;
}
-long wxDC::ImplLogicalToDeviceY(long y) const
+void wxDC::StartPage()
{
-// return (m_scaleGDI ? (floor(double(y))) : LogicalToDeviceY(y));
- return y;
}
-long wxDC::ImplLogicalToDeviceXRel(long x) const
+void wxDC::EndPage()
{
-// return (m_scaleGDI ? (floor(double(x))) : LogicalToDeviceXRel(x));
- return x;
}
-long wxDC::ImplLogicalToDeviceYRel(long y) const
+// ---------------------------------------------------------------------------
+// text metrics
+// ---------------------------------------------------------------------------
+
+wxCoord wxDC::GetCharHeight() const
{
-// return (m_scaleGDI ? (floor(double(y))) : LogicalToDeviceYRel(y));
- return y;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return 0;
+#endif
+
+ TEXTMETRIC lpTextMetric;
+
+ GetTextMetrics(GetHdc(), &lpTextMetric);
+
+ return lpTextMetric.tmHeight;
}
-bool wxDC::Blit(long xdest, long ydest, long width, long height,
- wxDC *source, long xsrc, long ysrc, int rop, bool useMask)
+wxCoord wxDC::GetCharWidth() const
{
- long xdest1 = xdest;
- long ydest1 = ydest;
- long xsrc1 = xsrc;
- long ysrc1 = ysrc;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return 0;
+#endif
- // Chris Breeze 18/5/98: use text foreground/background colours
- // when blitting from 1-bit bitmaps
- COLORREF old_textground = ::GetTextColor((HDC)m_hDC);
- COLORREF old_background = ::GetBkColor((HDC)m_hDC);
- if (m_textForegroundColour.Ok())
- {
- ::SetTextColor((HDC) m_hDC, m_textForegroundColour.GetPixel() ) ;
- }
- if (m_textBackgroundColour.Ok())
- {
- ::SetBkColor((HDC) m_hDC, m_textBackgroundColour.GetPixel() ) ;
- }
+ TEXTMETRIC lpTextMetric;
- DWORD dwRop = rop == wxCOPY ? SRCCOPY :
- rop == wxCLEAR ? WHITENESS :
- rop == wxSET ? BLACKNESS :
- rop == wxINVERT ? DSTINVERT :
- rop == wxAND ? MERGECOPY :
- rop == wxOR ? MERGEPAINT :
- rop == wxSRC_INVERT ? NOTSRCCOPY :
- rop == wxXOR ? SRCINVERT :
- rop == wxOR_REVERSE ? MERGEPAINT :
- rop == wxAND_REVERSE ? SRCERASE :
- rop == wxSRC_OR ? SRCPAINT :
- rop == wxSRC_AND ? SRCAND :
- SRCCOPY;
+ GetTextMetrics(GetHdc(), &lpTextMetric);
- bool success = TRUE;
- if (useMask && source->m_selectedBitmap.Ok() && source->m_selectedBitmap.GetMask())
- {
+ return lpTextMetric.tmAveCharWidth;
+}
-#if 0 // __WIN32__
- // Not implemented under Win95 (or maybe a specific device?)
- if (MaskBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- (HDC) source->m_hDC, xsrc1, ysrc1, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap(),
- 0, 0, 0xAACC0020))
+void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
+ wxCoord *descent, wxCoord *externalLeading,
+ wxFont *font) const
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC())
{
- // Success
+ if (x) *x = 0;
+ if (y) *y = 0;
+ if (descent) *descent = 0;
+ if (externalLeading) *externalLeading = 0;
+ return;
}
- else
-#endif
+#endif // __WXMICROWIN__
+
+ HFONT hfontOld;
+ if ( font )
{
- // Old code
-#if 0
- HDC dc_mask = CreateCompatibleDC((HDC) source->m_hDC);
- ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
- success = (BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- dc_mask, xsrc1, ysrc1, 0x00220326 /* NOTSRCAND */) != 0);
- success = (BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- (HDC) source->m_hDC, xsrc1, ysrc1, SRCPAINT) != 0);
- ::SelectObject(dc_mask, 0);
- ::DeleteDC(dc_mask);
-#endif
- // New code from Chris Breeze, 15/7/98
- // Blit bitmap with mask
+ wxASSERT_MSG( font->Ok(), _T("invalid font in wxDC::GetTextExtent") );
- if (IsKindOf(CLASSINFO(wxPrinterDC)))
- {
- // If we are printing source colours are screen colours
- // not printer colours and so we need copy the bitmap
- // pixel by pixel.
- RECT rect;
- HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
- HDC dc_src = (HDC) source->m_hDC;
-
- ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
- for (int x = 0; x < width; x++)
- {
- for (int y = 0; y < height; y++)
- {
- COLORREF cref = ::GetPixel(dc_mask, x, y);
- if (cref)
- {
- HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
- rect.left = xdest1 + x; rect.right = rect.left + 1;
- rect.top = ydest1 + y; rect.bottom = rect.top + 1;
- ::FillRect((HDC) m_hDC, &rect, brush);
- ::DeleteObject(brush);
- }
- }
- }
- ::SelectObject(dc_mask, 0);
- ::DeleteDC(dc_mask);
- }
- else
- {
- // create a temp buffer bitmap and DCs to access it and the mask
- HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
- HDC dc_buffer = ::CreateCompatibleDC((HDC) m_hDC);
- HBITMAP buffer_bmap = ::CreateCompatibleBitmap((HDC) m_hDC, width, height);
- ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
- ::SelectObject(dc_buffer, buffer_bmap);
+ hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
+ }
+ else // don't change the font
+ {
+ hfontOld = 0;
+ }
- // copy dest to buffer
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- (HDC) m_hDC, xdest1, ydest1, SRCCOPY);
+ SIZE sizeRect;
+ TEXTMETRIC tm;
- // copy src to buffer using selected raster op
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
+ GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
+ GetTextMetrics(GetHdc(), &tm);
- // set masked area in buffer to BLACK (pixel value 0)
- COLORREF prevBkCol = ::SetBkColor((HDC) m_hDC, RGB(255, 255, 255));
- COLORREF prevCol = ::SetTextColor((HDC) m_hDC, RGB(0, 0, 0));
- ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
- dc_mask, xsrc1, ysrc1, SRCAND);
+ if (x)
+ *x = sizeRect.cx;
+ if (y)
+ *y = sizeRect.cy;
+ if (descent)
+ *descent = tm.tmDescent;
+ if (externalLeading)
+ *externalLeading = tm.tmExternalLeading;
- // set unmasked area in dest to BLACK
- ::SetBkColor((HDC) m_hDC, RGB(0, 0, 0));
- ::SetTextColor((HDC) m_hDC, RGB(255, 255, 255));
- ::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- dc_mask, xsrc1, ysrc1, SRCAND);
- ::SetBkColor((HDC) m_hDC, prevBkCol); // restore colours to original values
- ::SetTextColor((HDC) m_hDC, prevCol);
+ if ( hfontOld )
+ {
+ ::SelectObject(GetHdc(), hfontOld);
+ }
+}
- // OR buffer to dest
- success = (::BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height,
- dc_buffer, 0, 0, SRCPAINT) != 0);
+void wxDC::SetMapMode(int mode)
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- // tidy up temporary DCs and bitmap
- ::SelectObject(dc_mask, 0);
- ::DeleteDC(dc_mask);
- ::SelectObject(dc_buffer, 0);
- ::DeleteDC(dc_buffer);
- ::DeleteObject(buffer_bmap);
- }
+ m_mappingMode = mode;
+
+ if ( mode == wxMM_TEXT )
+ {
+ m_logicalScaleX =
+ m_logicalScaleY = 1.0;
}
- }
- else
- {
- if (IsKindOf(CLASSINFO(wxPrinterDC)))
- {
- // If we are printing source colours are screen colours
- // not printer colours and so we need copy the bitmap
- // pixel by pixel.
- HDC dc_src = (HDC) source->m_hDC;
- RECT rect;
- for (int x = 0; x < width; x++)
- {
- for (int y = 0; y < height; y++)
+ else // need to do some calculations
+ {
+ int pixel_width = ::GetDeviceCaps(GetHdc(), HORZRES),
+ pixel_height = ::GetDeviceCaps(GetHdc(), VERTRES),
+ mm_width = ::GetDeviceCaps(GetHdc(), HORZSIZE),
+ mm_height = ::GetDeviceCaps(GetHdc(), VERTSIZE);
+
+ if ( (mm_width == 0) || (mm_height == 0) )
{
- HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
- rect.left = xdest1 + x; rect.right = rect.left + 1;
- rect.top = ydest1 + y; rect.bottom = rect.top + 1;
- ::FillRect((HDC) m_hDC, &rect, brush);
- ::DeleteObject(brush);
+ // we can't calculate mm2pixels[XY] then!
+ return;
+ }
+
+ double mm2pixelsX = (double)pixel_width / mm_width,
+ mm2pixelsY = (double)pixel_height / mm_height;
+
+ switch (mode)
+ {
+ case wxMM_TWIPS:
+ m_logicalScaleX = twips2mm * mm2pixelsX;
+ m_logicalScaleY = twips2mm * mm2pixelsY;
+ break;
+
+ case wxMM_POINTS:
+ m_logicalScaleX = pt2mm * mm2pixelsX;
+ m_logicalScaleY = pt2mm * mm2pixelsY;
+ break;
+
+ case wxMM_METRIC:
+ m_logicalScaleX = mm2pixelsX;
+ m_logicalScaleY = mm2pixelsY;
+ break;
+
+ case wxMM_LOMETRIC:
+ m_logicalScaleX = mm2pixelsX / 10.0;
+ m_logicalScaleY = mm2pixelsY / 10.0;
+ break;
+
+ default:
+ wxFAIL_MSG( _T("unknown mapping mode in SetMapMode") );
}
- }
- }
- else
- {
- success = (BitBlt((HDC) m_hDC, xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
- xsrc1, ysrc1, dwRop) != 0);
}
- }
- ::SetTextColor((HDC)m_hDC, old_textground);
- ::SetBkColor((HDC)m_hDC, old_background);
- return success;
+ // 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;
+
+ ::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);
}
-void wxDC::GetSize(int* width, int* height) const
+void wxDC::SetUserScale(double x, double y)
{
- long w=::GetDeviceCaps((HDC) m_hDC,HORZRES);
- long h=::GetDeviceCaps((HDC) m_hDC,VERTRES);
- *width = w;
- *height = h;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ if ( x == m_userScaleX && y == m_userScaleY )
+ return;
+
+ m_userScaleX = x;
+ m_userScaleY = y;
+
+ SetMapMode(m_mappingMode);
}
-void wxDC::GetSizeMM(long *width, long *height) const
+void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
{
- long w=::GetDeviceCaps((HDC) m_hDC,HORZSIZE);
- long h=::GetDeviceCaps((HDC) m_hDC,VERTSIZE);
- *width = w;
- *height = h;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ 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::DrawPolygon(wxList *list, long xoffset, long yoffset,int fillStyle)
+void wxDC::SetSystemScale(double x, double y)
{
- int n = list->Number();
- wxPoint *points = new wxPoint[n];
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- int i = 0;
- for(wxNode *node = list->First(); node; node = node->Next()) {
- wxPoint *point = (wxPoint *)node->Data();
- points[i].x = point->x;
- points[i++].y = point->y;
- }
- DrawPolygon(n, points, xoffset, yoffset,fillStyle);
- delete[] points;
+ if ( x == m_scaleX && y == m_scaleY )
+ return;
+
+ m_scaleX = x;
+ m_scaleY = y;
+
+ SetMapMode(m_mappingMode);
}
-void wxDC::DrawLines(wxList *list, long xoffset, long yoffset)
+void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y)
{
- int n = list->Number();
- wxPoint *points = new wxPoint[n];
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ if ( x == m_logicalOriginX && y == m_logicalOriginY )
+ return;
- int i = 0;
- for(wxNode *node = list->First(); node; node = node->Next()) {
- wxPoint *point = (wxPoint *)node->Data();
- points[i].x = point->x;
- points[i++].y = point->y;
- }
- DrawLines(n, points, xoffset, yoffset);
- delete []points;
+ m_logicalOriginX = x;
+ m_logicalOriginY = y;
+
+ ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
}
-void wxDC::SetTextForeground(const wxColour& colour)
+void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y)
{
- m_textForegroundColour = colour;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ if ( x == m_deviceOriginX && y == m_deviceOriginY )
+ return;
+
+ m_deviceOriginX = x;
+ m_deviceOriginY = y;
+
+ ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
}
-void wxDC::SetTextBackground(const wxColour& colour)
+// ---------------------------------------------------------------------------
+// coordinates transformations
+// ---------------------------------------------------------------------------
+
+wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
{
- m_textBackgroundColour = colour;
+ return DeviceToLogicalXRel(x - m_deviceOriginX)*m_signX + m_logicalOriginX;
}
-// For use by wxWindows only, unless custom units are required.
-void wxDC::SetLogicalScale(double x, double y)
+wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
{
- m_logicalScaleX = x;
- m_logicalScaleY = y;
+ // axis orientation is not taken into account for conversion of a distance
+ return (wxCoord)(x / (m_logicalScaleX*m_userScaleX*m_scaleX));
}
-void wxDC::CalcBoundingBox(long x, long y)
+wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
{
- if (x < m_minX) m_minX = x;
- if (y < m_minY) m_minY = y;
- if (x > m_maxX) m_maxX = x;
- if (y > m_maxY) m_maxY = y;
+ return DeviceToLogicalYRel(y - m_deviceOriginY)*m_signY + m_logicalOriginY;
}
-void wxDC::GetClippingBox(long *x,long *y,long *w,long *h) const
+wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
{
- if (m_clipping)
- {
- *x = m_clipX1 ;
- *y = m_clipY1 ;
- *w = (m_clipX2 - m_clipX1) ;
- *h = (m_clipY2 - m_clipY1) ;
- }
- else
- *x = *y = *w = *h = 0 ;
+ // axis orientation is not taken into account for conversion of a distance
+ return (wxCoord)( y / (m_logicalScaleY*m_userScaleY*m_scaleY));
}
-#if WXWIN_COMPATIBILITY
-void wxDC::GetTextExtent(const wxString& string, float *x, float *y,
- float *descent, float *externalLeading,
- wxFont *theFont, bool use16bit) const
+wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
{
- long x1, y1, descent1, externalLeading1;
- GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
- *x = x1; *y = y1;
- if (descent)
- *descent = descent1;
- if (externalLeading)
- *externalLeading = externalLeading1;
+ return LogicalToDeviceXRel(x - m_logicalOriginX)*m_signX + m_deviceOriginX;
}
-#endif
-int wxDC::GetDepth(void) const
+wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
{
- return (int) ::GetDeviceCaps((HDC) m_hDC,BITSPIXEL);
+ // axis orientation is not taken into account for conversion of a distance
+ return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
}
-#if wxUSE_SPLINES
+wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
+{
+ return LogicalToDeviceYRel(y - m_logicalOriginY)*m_signY + m_deviceOriginY;
+}
-// Make a 3-point spline
-void wxDC::DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3)
+wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
{
- wxList *point_list = new wxList;
+ // axis orientation is not taken into account for conversion of a distance
+ return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
+}
- wxPoint *point1 = new wxPoint;
- point1->x = x1; point1->y = y1;
- point_list->Append((wxObject*)point1);
+// ---------------------------------------------------------------------------
+// bit blit
+// ---------------------------------------------------------------------------
- wxPoint *point2 = new wxPoint;
- point2->x = x2; point2->y = y2;
- point_list->Append((wxObject*)point2);
+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)
+{
+ wxCHECK_MSG( source, FALSE, _T("wxDC::Blit(): NULL wxDC pointer") );
- wxPoint *point3 = new wxPoint;
- point3->x = x3; point3->y = y3;
- point_list->Append((wxObject*)point3);
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return FALSE;
+#endif
- DrawSpline(point_list);
+ const wxBitmap& bmpSrc = source->m_selectedBitmap;
+ if ( bmpSrc.Ok() && bmpSrc.HasAlpha() )
+ {
+ if ( AlphaBlt(GetHdc(), xdest, ydest, width, height,
+ GetHdcOf(*source), bmpSrc) )
+ return TRUE;
+ }
- for(wxNode *node = point_list->First(); node; node = node->Next()) {
- wxPoint *p = (wxPoint *)node->Data();
- delete p;
- }
- delete point_list;
-}
+ wxMask *mask = NULL;
+ if ( useMask )
+ {
+ mask = bmpSrc.GetMask();
-////#define wx_round(a) (int)((a)+.5)
-//#define wx_round(a) (a)
+ if ( !(bmpSrc.Ok() && mask && mask->GetMaskBitmap()) )
+ {
+ // don't give assert here because this would break existing
+ // programs - just silently ignore useMask parameter
+ useMask = FALSE;
+ }
+ }
-class wxSpline: public wxObject
-{
- public:
- int type;
- wxList *points;
+ if (xsrcMask == -1 && ysrcMask == -1)
+ {
+ xsrcMask = xsrc; ysrcMask = ysrc;
+ }
- wxSpline(wxList *list);
- void DeletePoints(void);
+ COLORREF old_textground = ::GetTextColor(GetHdc());
+ COLORREF old_background = ::GetBkColor(GetHdc());
+ if (m_textForegroundColour.Ok())
+ {
+ ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
+ }
+ if (m_textBackgroundColour.Ok())
+ {
+ ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
+ }
- // Doesn't delete points
- ~wxSpline(void);
-};
+ DWORD dwRop = SRCCOPY;
+ switch (rop)
+ {
+ case wxXOR: dwRop = SRCINVERT; break;
+ case wxINVERT: dwRop = DSTINVERT; break;
+ case wxOR_REVERSE: dwRop = 0x00DD0228; break;
+ case wxAND_REVERSE: dwRop = SRCERASE; break;
+ case wxCLEAR: dwRop = BLACKNESS; break;
+ case wxSET: dwRop = WHITENESS; break;
+ case wxOR_INVERT: dwRop = MERGEPAINT; break;
+ case wxAND: dwRop = SRCAND; break;
+ case wxOR: dwRop = SRCPAINT; break;
+ case wxEQUIV: dwRop = 0x00990066; break;
+ case wxNAND: dwRop = 0x007700E6; break;
+ case wxAND_INVERT: dwRop = 0x00220326; break;
+ case wxCOPY: dwRop = SRCCOPY; break;
+ case wxNO_OP: dwRop = DSTCOPY; break;
+ case wxSRC_INVERT: dwRop = NOTSRCCOPY; break;
+ case wxNOR: dwRop = NOTSRCCOPY; break;
+ default:
+ wxFAIL_MSG( wxT("unsupported logical function") );
+ return FALSE;
+ }
-void wxDC::DrawSpline(int n, wxPoint points[])
-{
- wxList list;
- int i;
- for (i =0; i < n; i++)
- list.Append((wxObject*)&points[i]);
- DrawSpline((wxList *)&list);
-}
+ bool success = FALSE;
-void wx_draw_open_spline(wxDC *dc, wxSpline *spline);
+ if (useMask)
+ {
+#ifdef __WIN32__
+ // we want the part of the image corresponding to the mask to be
+ // transparent, so use "DSTCOPY" ROP for the mask points (the usual
+ // meaning of fg and bg is inverted which corresponds to wxWin notion
+ // 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
+ // 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;
+ }
-void wx_quadratic_spline(double a1, double b1, double a2, double b2,
- double a3, double b3, double a4, double b4);
-void wx_clear_stack(void);
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
- double *y3, double *x4, double *y4);
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
- double x4, double y4);
-static bool wx_spline_add_point(double x, double y);
-static void wx_spline_draw_point_array(wxDC *dc);
-wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3);
+ if ( !success )
+#endif // Win32
+ {
+ // Blit bitmap with mask
+ HDC dc_mask ;
+ HDC dc_buffer ;
+ HBITMAP buffer_bmap ;
-void wxDC::DrawSpline(wxList *list)
-{
- wxSpline spline(list);
+#if wxUSE_DC_CACHEING
+ // create a temp buffer bitmap and DCs to access it and the mask
+ wxDCCacheEntry* dcCacheEntry1 = FindDCInCache(NULL, source->GetHDC());
+ dc_mask = (HDC) dcCacheEntry1->m_dc;
- wx_draw_open_spline(this, &spline);
-}
+ wxDCCacheEntry* dcCacheEntry2 = FindDCInCache(dcCacheEntry1, GetHDC());
+ dc_buffer = (HDC) dcCacheEntry2->m_dc;
+ wxDCCacheEntry* bitmapCacheEntry = FindBitmapInCache(GetHDC(),
+ width, height);
-wxList wx_spline_point_list;
+ 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_buffer = ::CreateCompatibleDC(GetHdc());
+ buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height);
+#endif // wxUSE_DC_CACHEING/!wxUSE_DC_CACHEING
+ HGDIOBJ hOldMaskBitmap = ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap());
+ HGDIOBJ hOldBufferBitmap = ::SelectObject(dc_buffer, buffer_bmap);
-void wx_draw_open_spline(wxDC *dc, wxSpline *spline)
-{
- wxPoint *p;
- double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
- double x1, y1, x2, y2;
+ // copy dest to buffer
+ if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ GetHdc(), xdest, ydest, SRCCOPY) )
+ {
+ wxLogLastError(wxT("BitBlt"));
+ }
- wxNode *node = spline->points->First();
- p = (wxPoint *)node->Data();
+ // copy src to buffer using selected raster op
+ if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
+ GetHdcOf(*source), xsrc, ysrc, dwRop) )
+ {
+ wxLogLastError(wxT("BitBlt"));
+ }
- x1 = p->x;
- y1 = p->y;
+ // 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) )
+ {
+ wxLogLastError(wxT("BitBlt"));
+ }
- node = node->Next();
- p = (wxPoint *)node->Data();
+ // 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) )
+ {
+ wxLogLastError(wxT("BitBlt"));
+ }
+ ::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
+ ::SetTextColor(GetHdc(), prevCol);
- x2 = p->x;
- y2 = p->y;
- cx1 = (double)((x1 + x2) / 2);
- cy1 = (double)((y1 + y2) / 2);
- cx2 = (double)((cx1 + x2) / 2);
- cy2 = (double)((cy1 + y2) / 2);
+ // OR buffer to dest
+ success = ::BitBlt(GetHdc(), xdest, ydest,
+ (int)width, (int)height,
+ dc_buffer, 0, 0, SRCPAINT) != 0;
+ if ( !success )
+ {
+ wxLogLastError(wxT("BitBlt"));
+ }
- wx_spline_add_point(x1, y1);
+ // tidy up temporary DCs and bitmap
+ ::SelectObject(dc_mask, hOldMaskBitmap);
+ ::SelectObject(dc_buffer, hOldBufferBitmap);
- while ((node = node->Next()) != NULL)
+#if !wxUSE_DC_CACHEING
+ {
+ ::DeleteDC(dc_mask);
+ ::DeleteDC(dc_buffer);
+ ::DeleteObject(buffer_bmap);
+ }
+#endif
+ }
+ }
+ else // no mask, just BitBlt() it
{
- p = (wxPoint *)node->Data();
- x1 = x2;
- y1 = y2;
- x2 = p->x;
- y2 = p->y;
- cx4 = (double)(x1 + x2) / 2;
- cy4 = (double)(y1 + y2) / 2;
- cx3 = (double)(x1 + cx4) / 2;
- cy3 = (double)(y1 + cy4) / 2;
+ // if we already have a DIB, draw it using StretchDIBits(), otherwise
+ // use StretchBlt() if available and finally fall back to BitBlt()
+ const int caps = ::GetDeviceCaps(GetHdc(), RASTERCAPS);
+ if ( bmpSrc.Ok() && (caps & RC_STRETCHDIB) )
+ {
+ DIBSECTION ds;
+ wxZeroMemory(ds);
+
+ if ( ::GetObject(GetHbitmapOf(bmpSrc),
+ sizeof(ds),
+ &ds) == sizeof(ds) )
+ {
+ StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR);
+
+ if ( ::StretchDIBits(GetHdc(),
+ xdest, ydest,
+ width, height,
+ 0, 0,
+ width, height,
+ ds.dsBm.bmBits,
+ (LPBITMAPINFO)&ds.dsBmih,
+ DIB_RGB_COLORS,
+ SRCCOPY
+ ) == (int)GDI_ERROR )
+ {
+ wxLogLastError(wxT("StretchDIBits"));
+ }
+ else
+ {
+ success = TRUE;
+ }
+ }
+ }
- wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
+ if ( !success && (caps & RC_STRETCHBLT) )
+ {
+ StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR);
+
+ if ( !::StretchBlt
+ (
+ GetHdc(),
+ xdest, ydest, width, height,
+ GetHdcOf(*source),
+ xsrc, ysrc, width, height,
+ dwRop
+ ) )
+ {
+ wxLogLastError(_T("StretchBlt"));
+ }
+ else
+ {
+ success = TRUE;
+ }
+ }
- cx1 = cx4;
- cy1 = cy4;
- cx2 = (double)(cx1 + x2) / 2;
- cy2 = (double)(cy1 + y2) / 2;
+ if ( !success )
+ {
+ if ( !::BitBlt
+ (
+ GetHdc(),
+ xdest, ydest,
+ (int)width, (int)height,
+ GetHdcOf(*source),
+ xsrc, ysrc,
+ dwRop
+ ) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+ else
+ {
+ success = TRUE;
+ }
+ }
}
- wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1));
- wx_spline_add_point(x2, y2);
+ ::SetTextColor(GetHdc(), old_textground);
+ ::SetBkColor(GetHdc(), old_background);
- wx_spline_draw_point_array(dc);
+ return success;
+}
+void wxDC::DoGetSize(int *w, int *h) const
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
+
+ if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES);
+ if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES);
}
-/********************* CURVES FOR SPLINES *****************************
+void wxDC::DoGetSizeMM(int *w, int *h) const
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
- The following spline drawing routine is from
+ // 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);
- "An Algorithm for High-Speed Curve Generation"
- by George Merrill Chaikin,
- Computer Graphics and Image Processing, 3, Academic Press,
- 1974, 346-349.
+ if ( w )
+ {
+ int wTotal = ::GetDeviceCaps(GetHdc(), HORZRES);
- and
+ wxCHECK_RET( wTotal, _T("0 width device?") );
- "On Chaikin's Algorithm" by R. F. Riesenfeld,
- Computer Graphics and Image Processing, 4, Academic Press,
- 1975, 304-310.
+ *w = (wPixels * ::GetDeviceCaps(GetHdc(), HORZSIZE)) / wTotal;
+ }
-***********************************************************************/
+ if ( h )
+ {
+ int hTotal = ::GetDeviceCaps(GetHdc(), VERTRES);
-#define half(z1, z2) ((z1+z2)/2.0)
-#define THRESHOLD 5
+ wxCHECK_RET( hTotal, _T("0 height device?") );
-/* iterative version */
+ *h = (hPixels * ::GetDeviceCaps(GetHdc(), VERTSIZE)) / hTotal;
+ }
+}
-void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
- double b4)
+wxSize wxDC::GetPPI() const
{
- register double xmid, ymid;
- double x1, y1, x2, y2, x3, y3, x4, y4;
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return wxSize();
+#endif
- wx_clear_stack();
- wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
+ int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
+ int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
- while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
- xmid = (double)half(x2, x3);
- ymid = (double)half(y2, y3);
- if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
- fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
- wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1));
- wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid));
- } else {
- wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
- (double)half(x3, x4), (double)half(y3, y4), x4, y4);
- wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
- (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
- }
- }
+ return wxSize(x, y);
}
+// For use by wxWindows only, unless custom units are required.
+void wxDC::SetLogicalScale(double x, double y)
+{
+#ifdef __WXMICROWIN__
+ if (!GetHDC()) return;
+#endif
-/* utilities used by spline drawing routines */
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+}
+// ----------------------------------------------------------------------------
+// DC caching
+// ----------------------------------------------------------------------------
-typedef struct wx_spline_stack_struct {
- double x1, y1, x2, y2, x3, y3, x4, y4;
-}
- Stack;
+#if wxUSE_DC_CACHEING
+
+/*
+ * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
+ * improve it in due course, either using arrays, or simply storing pointers to one
+ * entry for the bitmap, and two for the DCs. -- JACS
+ */
-#define SPLINE_STACK_DEPTH 20
-static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
-static Stack *wx_stack_top;
-static int wx_stack_count;
+wxList wxDC::sm_bitmapCache;
+wxList wxDC::sm_dcCache;
-void wx_clear_stack(void)
+wxDCCacheEntry::wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth)
{
- wx_stack_top = wx_spline_stack;
- wx_stack_count = 0;
+ m_bitmap = hBitmap;
+ m_dc = 0;
+ m_width = w;
+ m_height = h;
+ m_depth = depth;
}
-void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
+wxDCCacheEntry::wxDCCacheEntry(WXHDC hDC, int depth)
{
- wx_stack_top->x1 = x1;
- wx_stack_top->y1 = y1;
- wx_stack_top->x2 = x2;
- wx_stack_top->y2 = y2;
- wx_stack_top->x3 = x3;
- wx_stack_top->y3 = y3;
- wx_stack_top->x4 = x4;
- wx_stack_top->y4 = y4;
- wx_stack_top++;
- wx_stack_count++;
+ m_bitmap = 0;
+ m_dc = hDC;
+ m_width = 0;
+ m_height = 0;
+ m_depth = depth;
}
-int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
- double *x3, double *y3, double *x4, double *y4)
+wxDCCacheEntry::~wxDCCacheEntry()
{
- if (wx_stack_count == 0)
- return (0);
- wx_stack_top--;
- wx_stack_count--;
- *x1 = wx_stack_top->x1;
- *y1 = wx_stack_top->y1;
- *x2 = wx_stack_top->x2;
- *y2 = wx_stack_top->y2;
- *x3 = wx_stack_top->x3;
- *y3 = wx_stack_top->y3;
- *x4 = wx_stack_top->x4;
- *y4 = wx_stack_top->y4;
- return (1);
+ if (m_bitmap)
+ ::DeleteObject((HBITMAP) m_bitmap);
+ if (m_dc)
+ ::DeleteDC((HDC) m_dc);
+}
+
+wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h)
+{
+ int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
+ wxNode* node = sm_bitmapCache.GetFirst();
+ while (node)
+ {
+ wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
+
+ if (entry->m_depth == depth)
+ {
+ if (entry->m_width < w || entry->m_height < h)
+ {
+ ::DeleteObject((HBITMAP) entry->m_bitmap);
+ entry->m_bitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h);
+ if ( !entry->m_bitmap)
+ {
+ wxLogLastError(wxT("CreateCompatibleBitmap"));
+ }
+ entry->m_width = w; entry->m_height = h;
+ return entry;
+ }
+ return entry;
+ }
+
+ node = node->GetNext();
+ }
+ WXHBITMAP hBitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h);
+ if ( !hBitmap)
+ {
+ wxLogLastError(wxT("CreateCompatibleBitmap"));
+ }
+ wxDCCacheEntry* entry = new wxDCCacheEntry(hBitmap, w, h, depth);
+ AddToBitmapCache(entry);
+ return entry;
}
-static bool wx_spline_add_point(double x, double y)
+wxDCCacheEntry* wxDC::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc)
{
- wxPoint *point = new wxPoint ;
- point->x = (int) x;
- point->y = (int) y;
- wx_spline_point_list.Append((wxObject*)point);
- return TRUE;
+ int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
+ wxNode* node = sm_dcCache.GetFirst();
+ while (node)
+ {
+ wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
+
+ // Don't return the same one as we already have
+ if (!notThis || (notThis != entry))
+ {
+ if (entry->m_depth == depth)
+ {
+ return entry;
+ }
+ }
+
+ node = node->GetNext();
+ }
+ WXHDC hDC = (WXHDC) ::CreateCompatibleDC((HDC) dc);
+ if ( !hDC)
+ {
+ wxLogLastError(wxT("CreateCompatibleDC"));
+ }
+ wxDCCacheEntry* entry = new wxDCCacheEntry(hDC, depth);
+ AddToDCCache(entry);
+ return entry;
}
-static void wx_spline_draw_point_array(wxDC *dc)
+void wxDC::AddToBitmapCache(wxDCCacheEntry* entry)
{
- dc->DrawLines(&wx_spline_point_list, (double)0.0, (double)0.0);
- wxNode *node = wx_spline_point_list.First();
- while (node)
- {
- wxPoint *point = (wxPoint *)node->Data();
- delete point;
- delete node;
- node = wx_spline_point_list.First();
- }
+ sm_bitmapCache.Append(entry);
}
-wxSpline::wxSpline(wxList *list)
+void wxDC::AddToDCCache(wxDCCacheEntry* entry)
{
- points = list;
+ sm_dcCache.Append(entry);
}
-wxSpline::~wxSpline(void)
+void wxDC::ClearCache()
{
+ sm_dcCache.DeleteContents(TRUE);
+ sm_dcCache.Clear();
+ sm_dcCache.DeleteContents(FALSE);
+ sm_bitmapCache.DeleteContents(TRUE);
+ sm_bitmapCache.Clear();
+ sm_bitmapCache.DeleteContents(FALSE);
}
-void wxSpline::DeletePoints(void)
+// Clean up cache at app exit
+class wxDCModule : public wxModule
+{
+public:
+ virtual bool OnInit() { return TRUE; }
+ virtual void OnExit() { wxDC::ClearCache(); }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxDCModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
+
+#endif // wxUSE_DC_CACHEING
+
+// ----------------------------------------------------------------------------
+// alpha channel support
+// ----------------------------------------------------------------------------
+
+static bool AlphaBlt(HDC hdcDst,
+ int x, int y, int width, int height,
+ HDC hdcSrc,
+ const wxBitmap& bmp)
{
- for(wxNode *node = points->First(); node; node = points->First())
- {
- wxPoint *point = (wxPoint *)node->Data();
- delete point;
- delete node;
- }
- delete points;
+ wxASSERT_MSG( bmp.Ok() && 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);
+
+ // bitmaps can be drawn only from GUI thread so there is no need to
+ // protect this static variable from multiple threads
+ static bool s_triedToLoad = FALSE;
+ static AlphaBlend_t pfnAlphaBlend = NULL;
+ if ( !s_triedToLoad )
+ {
+ s_triedToLoad = TRUE;
+
+ // don't give errors about the DLL being unavailable, we're
+ // prepared to handle this
+ wxLogNull nolog;
+
+ wxDynamicLibrary dll(_T("msimg32.dll"));
+ if ( dll.IsLoaded() )
+ {
+ pfnAlphaBlend = (AlphaBlend_t)dll.GetSymbol(_T("AlphaBlend"));
+ if ( pfnAlphaBlend )
+ {
+ // we must keep the DLL loaded if we want to be able to
+ // call AlphaBlend() so just never unload it at all, not a
+ // big deal
+ dll.Detach();
+ }
+ }
+ }
+
+ 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, width, height,
+ hdcSrc, 0, 0, width, height,
+ bf) )
+ {
+ // skip wxAlphaBlend() call below
+ return TRUE;
+ }
+
+ wxLogLastError(_T("AlphaBlend"));
+ }
+#endif // defined(AC_SRC_OVER)
+
+ // AlphaBlend() unavailable of failed: use our own (probably much slower)
+ // implementation
+#ifdef wxHAVE_RAW_BITMAP
+ wxAlphaBlend(hdcDst, x, y, width, height, 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)
+ return FALSE;
+#endif // wxHAVE_RAW_BITMAP
}
-#endif // wxUSE_SPLINES
+// wxAlphaBlend: our fallback if ::AlphaBlend() is unavailable
+#ifdef wxHAVE_RAW_BITMAP
+
+static void
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSrc)
+{
+ // get the destination DC pixels
+ wxBitmap bmpDst(w, h, 32 /* force creating RGBA DIB */);
+ MemoryHDC hdcMem;
+ SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst));
+
+ if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, 0, 0, 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 < h; y++ )
+ {
+ wxAlphaPixelData::Iterator pDstRowStart = pDst,
+ pSrcRowStart = pSrc;
+
+ for ( int x = 0; x < w; x++ )
+ {
+ // 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;
+ ++pSrc;
+ }
+
+ pDst = pDstRowStart;
+ pSrc = pSrcRowStart;
+ pDst.OffsetY(dataDst, 1);
+ pSrc.OffsetY(dataSrc, 1);
+ }
+
+ // and finally blit them back to the destination DC
+ if ( !::BitBlt(hdcDst, xDst, yDst, w, h, hdcMem, 0, 0, SRCCOPY) )
+ {
+ wxLogLastError(_T("BitBlt"));
+ }
+}
+#endif // #ifdef wxHAVE_RAW_BITMAP
projects / wxWidgets.git / blobdiff