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2bda0e17 1/////////////////////////////////////////////////////////////////////////////
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2// Name: src/msw/dc.cpp
3// Purpose: wxDC class for MSW port
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4// Author: Julian Smart
5// Modified by:
6// Created: 01/02/97
7// RCS-ID: $Id$
6c9a19aa 8// Copyright: (c) Julian Smart
65571936 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12// ===========================================================================
13// declarations
14// ===========================================================================
15
16// ---------------------------------------------------------------------------
17// headers
18// ---------------------------------------------------------------------------
19
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20// For compilers that support precompilation, includes "wx.h".
21#include "wx/wxprec.h"
22
23#ifdef __BORLANDC__
a23fd0e1 24 #pragma hdrstop
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25#endif
26
27#ifndef WX_PRECOMP
fb6724f1 28 #include "wx/image.h"
4286a5b5 29 #include "wx/window.h"
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30 #include "wx/dc.h"
31 #include "wx/utils.h"
32 #include "wx/dialog.h"
33 #include "wx/app.h"
34 #include "wx/bitmap.h"
35 #include "wx/dcmemory.h"
0c589ad0 36 #include "wx/log.h"
4286a5b5 37 #include "wx/icon.h"
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38#endif
39
0cbff120 40#include "wx/sysopt.h"
2bda0e17 41#include "wx/dcprint.h"
aef94d68 42#include "wx/module.h"
acf8e3d2 43#include "wx/dynload.h"
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44
45#ifdef wxHAVE_RAW_BITMAP
878711c0 46#include "wx/rawbmp.h"
1e3c12d7 47#endif
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48
49#include <string.h>
2bda0e17 50
660296aa 51#include "wx/msw/wrapcdlg.h"
2bda0e17 52#ifndef __WIN32__
a23fd0e1 53 #include <print.h>
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54#endif
55
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56#ifndef AC_SRC_ALPHA
57#define AC_SRC_ALPHA 1
58#endif
59
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60/* Quaternary raster codes */
61#ifndef MAKEROP4
62#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore))
63#endif
64
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65// apparently with MicroWindows it is possible that HDC is 0 so we have to
66// check for this ourselves
67#ifdef __WXMICROWIN__
68 #define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return;
69 #define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x;
70#else
71 #define WXMICROWIN_CHECK_HDC
72 #define WXMICROWIN_CHECK_HDC_RET(x)
73#endif
74
5acb7b3e 75IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
2bda0e17 76
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77// ---------------------------------------------------------------------------
78// constants
79// ---------------------------------------------------------------------------
80
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81static const int VIEWPORT_EXTENT = 1000;
82
83static const int MM_POINTS = 9;
84static const int MM_METRIC = 10;
a23fd0e1 85
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86// ROPs which don't have standard names (see "Ternary Raster Operations" in the
87// MSDN docs for how this and other numbers in wxDC::Blit() are obtained)
88#define DSTCOPY 0x00AA0029 // a.k.a. NOP operation
89
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90// ----------------------------------------------------------------------------
91// macros for logical <-> device coords conversion
92// ----------------------------------------------------------------------------
93
94/*
95 We currently let Windows do all the translations itself so these macros are
96 not really needed (any more) but keep them to enhance readability of the
97 code by allowing to see where are the logical and where are the device
98 coordinates used.
99 */
100
1a4b50d2 101#ifdef __WXWINCE__
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102 #define XLOG2DEV(x) ((x-m_logicalOriginX)*m_signX)
103 #define YLOG2DEV(y) ((y-m_logicalOriginY)*m_signY)
104 #define XDEV2LOG(x) ((x)*m_signX+m_logicalOriginX)
105 #define YDEV2LOG(y) ((y)*m_signY+m_logicalOriginY)
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106#else
107 #define XLOG2DEV(x) (x)
108 #define YLOG2DEV(y) (y)
109 #define XDEV2LOG(x) (x)
110 #define YDEV2LOG(y) (y)
111#endif
1e2081a1 112
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113// ---------------------------------------------------------------------------
114// private functions
115// ---------------------------------------------------------------------------
116
117// convert degrees to radians
118static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
119
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120// call AlphaBlend() to blit contents of hdcSrc to hdcDst using alpha
121//
122// NB: bmpSrc is the bitmap selected in hdcSrc, it is not really needed
123// to pass it to this function but as we already have it at the point
124// of call anyhow we do
125//
126// return true if we could draw the bitmap in one way or the other, false
127// otherwise
128static bool AlphaBlt(HDC hdcDst,
129 int x, int y, int w, int h,
3db79902 130 int srcX, int srcY, HDC hdcSrc,
275a63e3 131 const wxBitmap& bmpSrc);
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132
133#ifdef wxHAVE_RAW_BITMAP
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134
135// our (limited) AlphaBlend() replacement for Windows versions not providing it
878711c0 136static void
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137wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h,
138 int srcX, int srcY, const wxBitmap& bmp);
139
140#endif // wxHAVE_RAW_BITMAP
878711c0 141
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142// ----------------------------------------------------------------------------
143// private classes
144// ----------------------------------------------------------------------------
145
146// instead of duplicating the same code which sets and then restores text
147// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes,
148// encapsulate this in a small helper class
149
150// wxColourChanger: changes the text colours in the ctor if required and
151// restores them in the dtor
152class wxColourChanger
153{
154public:
155 wxColourChanger(wxDC& dc);
156 ~wxColourChanger();
157
158private:
159 wxDC& m_dc;
160
161 COLORREF m_colFgOld, m_colBgOld;
162
163 bool m_changed;
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164
165 DECLARE_NO_COPY_CLASS(wxColourChanger)
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166};
167
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168// this class saves the old stretch blit mode during its life time
169class StretchBltModeChanger
170{
171public:
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172 StretchBltModeChanger(HDC hdc,
173 int WXUNUSED_IN_WINCE(mode))
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174 : m_hdc(hdc)
175 {
4676948b 176#ifndef __WXWINCE__
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177 m_modeOld = ::SetStretchBltMode(m_hdc, mode);
178 if ( !m_modeOld )
179 wxLogLastError(_T("SetStretchBltMode"));
4676948b 180#endif
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181 }
182
183 ~StretchBltModeChanger()
184 {
4676948b 185#ifndef __WXWINCE__
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186 if ( !::SetStretchBltMode(m_hdc, m_modeOld) )
187 wxLogLastError(_T("SetStretchBltMode"));
4676948b 188#endif
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189 }
190
191private:
192 const HDC m_hdc;
193
194 int m_modeOld;
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195
196 DECLARE_NO_COPY_CLASS(StretchBltModeChanger)
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197};
198
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199// ===========================================================================
200// implementation
201// ===========================================================================
202
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203// ----------------------------------------------------------------------------
204// wxColourChanger
205// ----------------------------------------------------------------------------
206
207wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc)
208{
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209 const wxBrush& brush = dc.GetBrush();
210 if ( brush.Ok() && brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE )
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211 {
212 HDC hdc = GetHdcOf(dc);
213 m_colFgOld = ::GetTextColor(hdc);
214 m_colBgOld = ::GetBkColor(hdc);
215
77ffb593 216 // note that Windows convention is opposite to wxWidgets one, this is
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217 // why text colour becomes the background one and vice versa
218 const wxColour& colFg = dc.GetTextForeground();
219 if ( colFg.Ok() )
220 {
221 ::SetBkColor(hdc, colFg.GetPixel());
222 }
223
224 const wxColour& colBg = dc.GetTextBackground();
225 if ( colBg.Ok() )
226 {
227 ::SetTextColor(hdc, colBg.GetPixel());
228 }
229
230 SetBkMode(hdc,
231 dc.GetBackgroundMode() == wxTRANSPARENT ? TRANSPARENT
232 : OPAQUE);
233
234 // flag which telsl us to undo changes in the dtor
beb966c5 235 m_changed = true;
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236 }
237 else
238 {
239 // nothing done, nothing to undo
beb966c5 240 m_changed = false;
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241 }
242}
243
244wxColourChanger::~wxColourChanger()
245{
246 if ( m_changed )
247 {
248 // restore the colours we changed
249 HDC hdc = GetHdcOf(m_dc);
250
251 ::SetBkMode(hdc, TRANSPARENT);
252 ::SetTextColor(hdc, m_colFgOld);
253 ::SetBkColor(hdc, m_colBgOld);
254 }
255}
256
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257// ---------------------------------------------------------------------------
258// wxDC
259// ---------------------------------------------------------------------------
2bda0e17 260
a23fd0e1 261wxDC::~wxDC()
2bda0e17 262{
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263 if ( m_hDC != 0 )
264 {
7bcb11d3 265 SelectOldObjects(m_hDC);
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266
267 // if we own the HDC, we delete it, otherwise we just release it
268
269 if ( m_bOwnsDC )
270 {
271 ::DeleteDC(GetHdc());
7bcb11d3 272 }
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273 else // we don't own our HDC
274 {
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275 if (m_canvas)
276 {
277 ::ReleaseDC(GetHwndOf(m_canvas), GetHdc());
278 }
279 else
280 {
281 // Must have been a wxScreenDC
282 ::ReleaseDC((HWND) NULL, GetHdc());
283 }
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284 }
285 }
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286}
287
288// This will select current objects out of the DC,
289// which is what you have to do before deleting the
290// DC.
291void wxDC::SelectOldObjects(WXHDC dc)
292{
7bcb11d3 293 if (dc)
2bda0e17 294 {
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295 if (m_oldBitmap)
296 {
297 ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
3ca22d5e 298#ifdef __WXDEBUG__
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299 if (m_selectedBitmap.Ok())
300 {
301 m_selectedBitmap.SetSelectedInto(NULL);
302 }
3ca22d5e 303#endif
7bcb11d3 304 }
a23fd0e1 305 m_oldBitmap = 0;
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306 if (m_oldPen)
307 {
308 ::SelectObject((HDC) dc, (HPEN) m_oldPen);
309 }
a23fd0e1 310 m_oldPen = 0;
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311 if (m_oldBrush)
312 {
313 ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
314 }
a23fd0e1 315 m_oldBrush = 0;
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316 if (m_oldFont)
317 {
318 ::SelectObject((HDC) dc, (HFONT) m_oldFont);
319 }
a23fd0e1 320 m_oldFont = 0;
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321
322#if wxUSE_PALETTE
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323 if (m_oldPalette)
324 {
19193a2c 325 ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, FALSE);
7bcb11d3 326 }
a23fd0e1 327 m_oldPalette = 0;
d275c7eb 328#endif // wxUSE_PALETTE
2bda0e17 329 }
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330
331 m_brush = wxNullBrush;
7bcb11d3 332 m_pen = wxNullPen;
d275c7eb 333#if wxUSE_PALETTE
7bcb11d3 334 m_palette = wxNullPalette;
d275c7eb 335#endif // wxUSE_PALETTE
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336 m_font = wxNullFont;
337 m_backgroundBrush = wxNullBrush;
338 m_selectedBitmap = wxNullBitmap;
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339}
340
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341// ---------------------------------------------------------------------------
342// clipping
343// ---------------------------------------------------------------------------
344
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345void wxDC::UpdateClipBox()
346{
82a306b7 347 WXMICROWIN_CHECK_HDC
d275c7eb 348
1e6feb95 349 RECT rect;
5230934a 350 ::GetClipBox(GetHdc(), &rect);
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351
352 m_clipX1 = (wxCoord) XDEV2LOG(rect.left);
353 m_clipY1 = (wxCoord) YDEV2LOG(rect.top);
354 m_clipX2 = (wxCoord) XDEV2LOG(rect.right);
355 m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
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356}
357
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358void
359wxDC::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
360{
361 // check if we should try to retrieve the clipping region possibly not set
362 // by our SetClippingRegion() but preset by Windows:this can only happen
363 // when we're associated with an existing HDC usign SetHDC(), see there
364 if ( m_clipping && !m_clipX1 && !m_clipX2 )
365 {
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366 wxDC *self = wxConstCast(this, wxDC);
367 self->UpdateClipBox();
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368
369 if ( !m_clipX1 && !m_clipX2 )
395b914e 370 self->m_clipping = false;
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371 }
372
f67fe9a4 373 wxDCBase::DoGetClippingBox(x, y, w, h);
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374}
375
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376// common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion()
377void wxDC::SetClippingHrgn(WXHRGN hrgn)
2bda0e17 378{
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379 wxCHECK_RET( hrgn, wxT("invalid clipping region") );
380
82a306b7 381 WXMICROWIN_CHECK_HDC
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382
383 // note that we combine the new clipping region with the existing one: this
384 // is compatible with what the other ports do and is the documented
385 // behaviour now (starting with 2.3.3)
3a5bcc4d 386#if defined(__WXWINCE__)
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387 RECT rectClip;
388 if ( !::GetClipBox(GetHdc(), &rectClip) )
389 return;
390
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391 // GetClipBox returns logical coordinates, so transform to device
392 rectClip.left = LogicalToDeviceX(rectClip.left);
393 rectClip.top = LogicalToDeviceY(rectClip.top);
394 rectClip.right = LogicalToDeviceX(rectClip.right);
395 rectClip.bottom = LogicalToDeviceY(rectClip.bottom);
396
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397 HRGN hrgnDest = ::CreateRectRgn(0, 0, 0, 0);
398 HRGN hrgnClipOld = ::CreateRectRgn(rectClip.left, rectClip.top,
399 rectClip.right, rectClip.bottom);
400
401 if ( ::CombineRgn(hrgnDest, hrgnClipOld, (HRGN)hrgn, RGN_AND) != ERROR )
402 {
403 ::SelectClipRgn(GetHdc(), hrgnDest);
404 }
405
406 ::DeleteObject(hrgnClipOld);
407 ::DeleteObject(hrgnDest);
3a5bcc4d 408#else // !WinCE
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409 if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR )
410 {
411 wxLogLastError(_T("ExtSelectClipRgn"));
412
413 return;
414 }
3a5bcc4d 415#endif // WinCE/!WinCE
d275c7eb 416
beb966c5 417 m_clipping = true;
40a89076 418
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419 UpdateClipBox();
420}
421
422void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
423{
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424 // the region coords are always the device ones, so do the translation
425 // manually
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426 //
427 // FIXME: possible +/-1 error here, to check!
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428 HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x),
429 LogicalToDeviceY(y),
430 LogicalToDeviceX(x + w),
431 LogicalToDeviceY(y + h));
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432 if ( !hrgn )
433 {
434 wxLogLastError(_T("CreateRectRgn"));
435 }
436 else
437 {
5230934a 438 SetClippingHrgn((WXHRGN)hrgn);
40a89076 439
5230934a 440 ::DeleteObject(hrgn);
40a89076 441 }
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442}
443
a23fd0e1 444void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
a724d789 445{
5230934a 446 SetClippingHrgn(region.GetHRGN());
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447}
448
a23fd0e1 449void wxDC::DestroyClippingRegion()
2bda0e17 450{
82a306b7 451 WXMICROWIN_CHECK_HDC
d275c7eb 452
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453 if (m_clipping && m_hDC)
454 {
455 // TODO: this should restore the previous clipping region,
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456 // so that OnPaint processing works correctly, and the update
457 // clipping region doesn't get destroyed after the first
458 // DestroyClippingRegion.
7bcb11d3 459 HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
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460 ::SelectClipRgn(GetHdc(), rgn);
461 ::DeleteObject(rgn);
7bcb11d3 462 }
1e6feb95 463
2e76da54 464 wxDCBase::DestroyClippingRegion();
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465}
466
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467// ---------------------------------------------------------------------------
468// query capabilities
469// ---------------------------------------------------------------------------
470
471bool wxDC::CanDrawBitmap() const
2bda0e17 472{
beb966c5 473 return true;
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474}
475
a23fd0e1 476bool wxDC::CanGetTextExtent() const
2bda0e17 477{
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478#ifdef __WXMICROWIN__
479 // TODO Extend MicroWindows' GetDeviceCaps function
beb966c5 480 return true;
04ef50df 481#else
7bcb11d3 482 // What sort of display is it?
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483 int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
484
485 return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
04ef50df 486#endif
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487}
488
a23fd0e1 489int wxDC::GetDepth() const
2bda0e17 490{
82a306b7 491 WXMICROWIN_CHECK_HDC_RET(16)
d275c7eb 492
a23fd0e1 493 return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
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494}
495
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496// ---------------------------------------------------------------------------
497// drawing
498// ---------------------------------------------------------------------------
499
500void wxDC::Clear()
2bda0e17 501{
82a306b7 502 WXMICROWIN_CHECK_HDC
d275c7eb 503
7bcb11d3 504 RECT rect;
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505 if ( m_canvas )
506 {
7bcb11d3 507 GetClientRect((HWND) m_canvas->GetHWND(), &rect);
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508 }
509 else
7bcb11d3 510 {
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511 // No, I think we should simply ignore this if printing on e.g.
512 // a printer DC.
513 // wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") );
514 if (!m_selectedBitmap.Ok())
515 return;
2506aab6 516
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517 rect.left = 0; rect.top = 0;
518 rect.right = m_selectedBitmap.GetWidth();
519 rect.bottom = m_selectedBitmap.GetHeight();
520 }
2506aab6 521
4676948b 522#ifndef __WXWINCE__
a23fd0e1 523 (void) ::SetMapMode(GetHdc(), MM_TEXT);
4676948b 524#endif
a23fd0e1 525
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526 DWORD colour = ::GetBkColor(GetHdc());
527 HBRUSH brush = ::CreateSolidBrush(colour);
528 ::FillRect(GetHdc(), &rect, brush);
529 ::DeleteObject(brush);
530
35bbb0c6 531#ifndef __WXWINCE__
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532 int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX,
533 height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY;
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534
535 ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
4676948b 536
a23fd0e1 537 ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
1e2081a1 538 ::SetWindowExtEx(GetHdc(), width, height, NULL);
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539 ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
540 ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
4676948b 541#endif
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542}
543
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544bool wxDC::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x),
545 wxCoord WXUNUSED_IN_WINCE(y),
546 const wxColour& WXUNUSED_IN_WINCE(col),
547 int WXUNUSED_IN_WINCE(style))
a23fd0e1 548{
4676948b 549#ifdef __WXWINCE__
beb966c5 550 return false;
4676948b 551#else
beb966c5 552 WXMICROWIN_CHECK_HDC_RET(false)
d275c7eb 553
387ebd3e 554 bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
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555 col.GetPixel(),
556 style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
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557 : FLOODFILLBORDER) ) ;
558 if (!success)
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559 {
560 // quoting from the MSDN docs:
561 //
562 // Following are some of the reasons this function might fail:
563 //
564 // * The filling could not be completed.
565 // * The specified point has the boundary color specified by the
566 // crColor parameter (if FLOODFILLBORDER was requested).
567 // * The specified point does not have the color specified by
568 // crColor (if FLOODFILLSURFACE was requested)
569 // * The point is outside the clipping region that is, it is not
570 // visible on the device.
571 //
f6bcfd97 572 wxLogLastError(wxT("ExtFloodFill"));
0bafad0c 573 }
a23fd0e1 574
7bcb11d3 575 CalcBoundingBox(x, y);
419430a0 576
387ebd3e 577 return success;
4676948b 578#endif
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579}
580
72cdf4c9 581bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
2bda0e17 582{
beb966c5 583 WXMICROWIN_CHECK_HDC_RET(false)
d275c7eb 584
beb966c5 585 wxCHECK_MSG( col, false, _T("NULL colour parameter in wxDC::GetPixel") );
f6bcfd97 586
7bcb11d3 587 // get the color of the pixel
a23fd0e1 588 COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
0bafad0c 589
f6bcfd97 590 wxRGBToColour(*col, pixelcolor);
dc1efb1d 591
beb966c5 592 return true;
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593}
594
72cdf4c9 595void wxDC::DoCrossHair(wxCoord x, wxCoord y)
a23fd0e1 596{
82a306b7 597 WXMICROWIN_CHECK_HDC
d275c7eb 598
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599 wxCoord x1 = x-VIEWPORT_EXTENT;
600 wxCoord y1 = y-VIEWPORT_EXTENT;
601 wxCoord x2 = x+VIEWPORT_EXTENT;
602 wxCoord y2 = y+VIEWPORT_EXTENT;
a23fd0e1 603
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604 wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y));
605 wxDrawLine(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), XLOG2DEV(x), YLOG2DEV(y2));
a23fd0e1 606
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607 CalcBoundingBox(x1, y1);
608 CalcBoundingBox(x2, y2);
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609}
610
72cdf4c9 611void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
2bda0e17 612{
82a306b7 613 WXMICROWIN_CHECK_HDC
d275c7eb 614
4676948b 615 wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2));
a23fd0e1 616
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617 CalcBoundingBox(x1, y1);
618 CalcBoundingBox(x2, y2);
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619}
620
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621// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
622// and ending at (x2, y2)
623void wxDC::DoDrawArc(wxCoord x1, wxCoord y1,
624 wxCoord x2, wxCoord y2,
625 wxCoord xc, wxCoord yc)
2bda0e17 626{
4676948b 627#ifdef __WXWINCE__
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628 // Slower emulation since WinCE doesn't support Pie and Arc
629 double r = sqrt( (x1-xc)*(x1-xc) + (y1-yc)*(y1-yc) );
630 double sa = acos((x1-xc)/r)/M_PI*180; // between 0 and 180
631 if( y1>yc ) sa = -sa; // below center
632 double ea = atan2(yc-y2, x2-xc)/M_PI*180;
633 DoDrawEllipticArcRot( xc-r, yc-r, 2*r, 2*r, sa, ea );
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634#else
635
82a306b7 636 WXMICROWIN_CHECK_HDC
d275c7eb 637
f6bcfd97 638 wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
2d8a5cb1 639
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640 double dx = xc - x1;
641 double dy = yc - y1;
642 double radius = (double)sqrt(dx*dx+dy*dy);
643 wxCoord r = (wxCoord)radius;
2d8a5cb1 644
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645 // treat the special case of full circle separately
646 if ( x1 == x2 && y1 == y2 )
7bcb11d3 647 {
f6bcfd97 648 DrawEllipse(xc - r, yc - r, 2*r, 2*r);
a23fd0e1 649 return;
7bcb11d3 650 }
a23fd0e1 651
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652 wxCoord xx1 = XLOG2DEV(x1);
653 wxCoord yy1 = YLOG2DEV(y1);
654 wxCoord xx2 = XLOG2DEV(x2);
655 wxCoord yy2 = YLOG2DEV(y2);
656 wxCoord xxc = XLOG2DEV(xc);
657 wxCoord yyc = YLOG2DEV(yc);
658 wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1)));
a23fd0e1 659
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660 wxCoord xxx1 = (wxCoord) (xxc-ray);
661 wxCoord yyy1 = (wxCoord) (yyc-ray);
662 wxCoord xxx2 = (wxCoord) (xxc+ray);
663 wxCoord yyy2 = (wxCoord) (yyc+ray);
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664
665 if ( m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT )
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666 {
667 // Have to add 1 to bottom-right corner of rectangle
668 // to make semi-circles look right (crooked line otherwise).
669 // Unfortunately this is not a reliable method, depends
670 // on the size of shape.
671 // TODO: figure out why this happens!
f6bcfd97 672 Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2);
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673 }
674 else
2d8a5cb1 675 {
f6bcfd97 676 Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2);
2d8a5cb1 677 }
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678
679 CalcBoundingBox(xc - r, yc - r);
680 CalcBoundingBox(xc + r, yc + r);
4676948b 681#endif
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682}
683
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684void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
685 wxCoord width, wxCoord height)
686{
82a306b7 687 WXMICROWIN_CHECK_HDC
d275c7eb 688
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689 wxCoord x2 = x1 + width,
690 y2 = y1 + height;
691
1e3c12d7 692#if defined(__WIN32__) && !defined(__SYMANTEC__) && !defined(__WXMICROWIN__)
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693 RECT rect;
694 rect.left = x1;
695 rect.top = y1;
696 rect.right = x2;
697 rect.bottom = y2;
698
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699#ifdef __WXWINCE__
700 DrawFrameControl(GetHdc(), &rect, DFC_BUTTON, DFCS_BUTTONCHECK);
701#else
cd9da200 702 DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK);
4676948b 703#endif
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704#else // Symantec-MicroWin
705 // draw a cross
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706 HPEN blackPen = ::CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
707 HPEN whiteBrush = (HPEN)::GetStockObject(WHITE_BRUSH);
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708 HPEN hPenOld = (HPEN)::SelectObject(GetHdc(), blackPen);
709 HPEN hBrushOld = (HPEN)::SelectObject(GetHdc(), whiteBrush);
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710 ::SetROP2(GetHdc(), R2_COPYPEN);
711 Rectangle(GetHdc(), x1, y1, x2, y2);
8cb172b4 712 MoveToEx(GetHdc(), x1, y1, NULL);
cd9da200 713 LineTo(GetHdc(), x2, y2);
8cb172b4 714 MoveToEx(GetHdc(), x2, y1, NULL);
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715 LineTo(GetHdc(), x1, y2);
716 ::SelectObject(GetHdc(), hPenOld);
717 ::SelectObject(GetHdc(), hBrushOld);
718 ::DeleteObject(blackPen);
3a5bcc4d 719#endif // Win32/Symantec-MicroWin
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720
721 CalcBoundingBox(x1, y1);
722 CalcBoundingBox(x2, y2);
723}
724
72cdf4c9 725void wxDC::DoDrawPoint(wxCoord x, wxCoord y)
2bda0e17 726{
82a306b7 727 WXMICROWIN_CHECK_HDC
d275c7eb 728
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729 COLORREF color = 0x00ffffff;
730 if (m_pen.Ok())
731 {
a23fd0e1 732 color = m_pen.GetColour().GetPixel();
7bcb11d3 733 }
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734
735 SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
736
7bcb11d3 737 CalcBoundingBox(x, y);
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738}
739
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740void wxDC::DoDrawPolygon(int n,
741 wxPoint points[],
742 wxCoord xoffset,
743 wxCoord yoffset,
744 int WXUNUSED_IN_WINCE(fillStyle))
2bda0e17 745{
82a306b7 746 WXMICROWIN_CHECK_HDC
d275c7eb 747
f6bcfd97 748 wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
de2d2cdc 749
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750 // Do things less efficiently if we have offsets
751 if (xoffset != 0 || yoffset != 0)
6a6c0a8b 752 {
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753 POINT *cpoints = new POINT[n];
754 int i;
755 for (i = 0; i < n; i++)
756 {
757 cpoints[i].x = (int)(points[i].x + xoffset);
758 cpoints[i].y = (int)(points[i].y + yoffset);
a23fd0e1 759
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760 CalcBoundingBox(cpoints[i].x, cpoints[i].y);
761 }
4676948b 762#ifndef __WXWINCE__
a23fd0e1 763 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
4676948b 764#endif
a23fd0e1 765 (void)Polygon(GetHdc(), cpoints, n);
4676948b 766#ifndef __WXWINCE__
a23fd0e1 767 SetPolyFillMode(GetHdc(),prev);
4676948b 768#endif
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769 delete[] cpoints;
770 }
771 else
772 {
773 int i;
774 for (i = 0; i < n; i++)
775 CalcBoundingBox(points[i].x, points[i].y);
a23fd0e1 776
4676948b 777#ifndef __WXWINCE__
a23fd0e1 778 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
4676948b 779#endif
a23fd0e1 780 (void)Polygon(GetHdc(), (POINT*) points, n);
4676948b 781#ifndef __WXWINCE__
a23fd0e1 782 SetPolyFillMode(GetHdc(),prev);
4676948b 783#endif
6a6c0a8b 784 }
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785}
786
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787void
788wxDC::DoDrawPolyPolygon(int n,
793db755 789 int count[],
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790 wxPoint points[],
791 wxCoord xoffset,
792 wxCoord yoffset,
793 int fillStyle)
794{
d61c1a6f 795#ifdef __WXWINCE__
95c1ea29 796 wxDCBase::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle);
35bbb0c6 797#else
82a306b7 798 WXMICROWIN_CHECK_HDC
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799
800 wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
801 int i, cnt;
802 for (i = cnt = 0; i < n; i++)
793db755 803 cnt += count[i];
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804
805 // Do things less efficiently if we have offsets
806 if (xoffset != 0 || yoffset != 0)
807 {
808 POINT *cpoints = new POINT[cnt];
809 for (i = 0; i < cnt; i++)
810 {
811 cpoints[i].x = (int)(points[i].x + xoffset);
812 cpoints[i].y = (int)(points[i].y + yoffset);
813
814 CalcBoundingBox(cpoints[i].x, cpoints[i].y);
815 }
d61c1a6f 816#ifndef __WXWINCE__
6e76b35d 817 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
35bbb0c6 818#endif
793db755 819 (void)PolyPolygon(GetHdc(), cpoints, count, n);
d61c1a6f 820#ifndef __WXWINCE__
6e76b35d 821 SetPolyFillMode(GetHdc(),prev);
35bbb0c6 822#endif
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823 delete[] cpoints;
824 }
825 else
826 {
827 for (i = 0; i < cnt; i++)
828 CalcBoundingBox(points[i].x, points[i].y);
829
d61c1a6f 830#ifndef __WXWINCE__
6e76b35d 831 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
35bbb0c6 832#endif
793db755 833 (void)PolyPolygon(GetHdc(), (POINT*) points, count, n);
d61c1a6f 834#ifndef __WXWINCE__
6e76b35d 835 SetPolyFillMode(GetHdc(),prev);
35bbb0c6 836#endif
6e76b35d 837 }
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838#endif
839 // __WXWINCE__
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840}
841
72cdf4c9 842void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
2bda0e17 843{
82a306b7 844 WXMICROWIN_CHECK_HDC
d275c7eb 845
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846 // Do things less efficiently if we have offsets
847 if (xoffset != 0 || yoffset != 0)
6a6c0a8b 848 {
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849 POINT *cpoints = new POINT[n];
850 int i;
851 for (i = 0; i < n; i++)
852 {
853 cpoints[i].x = (int)(points[i].x + xoffset);
854 cpoints[i].y = (int)(points[i].y + yoffset);
a23fd0e1 855
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856 CalcBoundingBox(cpoints[i].x, cpoints[i].y);
857 }
a23fd0e1 858 (void)Polyline(GetHdc(), cpoints, n);
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859 delete[] cpoints;
860 }
861 else
862 {
863 int i;
864 for (i = 0; i < n; i++)
865 CalcBoundingBox(points[i].x, points[i].y);
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866
867 (void)Polyline(GetHdc(), (POINT*) points, n);
6a6c0a8b 868 }
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869}
870
72cdf4c9 871void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
2bda0e17 872{
82a306b7 873 WXMICROWIN_CHECK_HDC
d275c7eb 874
f6bcfd97 875 wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
de2d2cdc 876
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877 wxCoord x2 = x + width;
878 wxCoord y2 = y + height;
a23fd0e1 879
5456b916 880 if ((m_logicalFunction == wxCOPY) && (m_pen.GetStyle() == wxTRANSPARENT))
0bafad0c 881 {
7299b1b2 882 RECT rect;
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883 rect.left = XLOG2DEV(x);
884 rect.top = YLOG2DEV(y);
885 rect.right = XLOG2DEV(x2);
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886 rect.bottom = YLOG2DEV(y2);
887 (void)FillRect(GetHdc(), &rect, (HBRUSH)m_brush.GetResourceHandle() );
5456b916
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888 }
889 else
890 {
891 // Windows draws the filled rectangles without outline (i.e. drawn with a
892 // transparent pen) one pixel smaller in both directions and we want them
f6bcfd97 893 // to have the same size regardless of which pen is used - adjust
5456b916
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894
895