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1/////////////////////////////////////////////////////////////////////////////
2// Name: dc.cpp
3// Purpose: wxDC class
4// Author: Julian Smart
5// Modified by:
6// Created: 01/02/97
7// RCS-ID: $Id$
8// Copyright: (c) Julian Smart and Markus Holzem
fd3f686c 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12// ===========================================================================
13// declarations
14// ===========================================================================
15
16// ---------------------------------------------------------------------------
17// headers
18// ---------------------------------------------------------------------------
19
2bda0e17 20#ifdef __GNUG__
a23fd0e1 21 #pragma implementation "dc.h"
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22#endif
23
24// For compilers that support precompilation, includes "wx.h".
25#include "wx/wxprec.h"
26
27#ifdef __BORLANDC__
a23fd0e1 28 #pragma hdrstop
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29#endif
30
31#ifndef WX_PRECOMP
4286a5b5 32 #include "wx/window.h"
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33 #include "wx/dc.h"
34 #include "wx/utils.h"
35 #include "wx/dialog.h"
36 #include "wx/app.h"
37 #include "wx/bitmap.h"
38 #include "wx/dcmemory.h"
0c589ad0 39 #include "wx/log.h"
4286a5b5 40 #include "wx/icon.h"
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41#endif
42
43#include "wx/dcprint.h"
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44
45#include <string.h>
46#include <math.h>
2bda0e17 47
47d67540 48#if wxUSE_COMMON_DIALOGS
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49#if wxUSE_NORLANDER_HEADERS
50 #include <windows.h>
51#endif
a23fd0e1 52 #include <commdlg.h>
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53#endif
54
55#ifndef __WIN32__
a23fd0e1 56 #include <print.h>
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57#endif
58
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59#include "wx/msw/private.h"
60
2bda0e17 61#if !USE_SHARED_LIBRARY
a23fd0e1 62 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
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63#endif
64
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65// ---------------------------------------------------------------------------
66// constants
67// ---------------------------------------------------------------------------
68
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69static const int VIEWPORT_EXTENT = 1000;
70
71static const int MM_POINTS = 9;
72static const int MM_METRIC = 10;
a23fd0e1 73
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74// usually this is defined in math.h
75#ifndef M_PI
76 static const double M_PI = 3.14159265358979323846;
77#endif // M_PI
78
79// ---------------------------------------------------------------------------
80// private functions
81// ---------------------------------------------------------------------------
82
83// convert degrees to radians
84static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
85
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86// ===========================================================================
87// implementation
88// ===========================================================================
89
90// ---------------------------------------------------------------------------
91// wxDC
92// ---------------------------------------------------------------------------
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93
94// Default constructor
a23fd0e1 95wxDC::wxDC()
2bda0e17 96{
7bcb11d3 97 m_canvas = NULL;
a23fd0e1 98
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99 m_oldBitmap = 0;
100 m_oldPen = 0;
101 m_oldBrush = 0;
102 m_oldFont = 0;
103 m_oldPalette = 0;
a23fd0e1 104
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105 m_bOwnsDC = FALSE;
106 m_hDC = 0;
a23fd0e1 107
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108 m_windowExtX = VIEWPORT_EXTENT;
109 m_windowExtY = VIEWPORT_EXTENT;
a23fd0e1 110
7bcb11d3 111 m_hDCCount = 0;
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112}
113
114
a23fd0e1 115wxDC::~wxDC()
2bda0e17 116{
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117 if ( m_hDC != 0 ) {
118 SelectOldObjects(m_hDC);
119 if ( m_bOwnsDC ) {
120 if ( m_canvas == NULL )
a23fd0e1 121 ::DeleteDC(GetHdc());
7bcb11d3 122 else
a23fd0e1 123 ::ReleaseDC((HWND)m_canvas->GetHWND(), GetHdc());
7bcb11d3 124 }
2bda0e17 125 }
a23fd0e1 126
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127}
128
129// This will select current objects out of the DC,
130// which is what you have to do before deleting the
131// DC.
132void wxDC::SelectOldObjects(WXHDC dc)
133{
7bcb11d3 134 if (dc)
2bda0e17 135 {
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136 if (m_oldBitmap)
137 {
138 ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
139 if (m_selectedBitmap.Ok())
140 {
141 m_selectedBitmap.SetSelectedInto(NULL);
142 }
143 }
a23fd0e1 144 m_oldBitmap = 0;
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145 if (m_oldPen)
146 {
147 ::SelectObject((HDC) dc, (HPEN) m_oldPen);
148 }
a23fd0e1 149 m_oldPen = 0;
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150 if (m_oldBrush)
151 {
152 ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
153 }
a23fd0e1 154 m_oldBrush = 0;
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155 if (m_oldFont)
156 {
157 ::SelectObject((HDC) dc, (HFONT) m_oldFont);
158 }
a23fd0e1 159 m_oldFont = 0;
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160 if (m_oldPalette)
161 {
162 ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
163 }
a23fd0e1 164 m_oldPalette = 0;
2bda0e17 165 }
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166
167 m_brush = wxNullBrush;
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168 m_pen = wxNullPen;
169 m_palette = wxNullPalette;
170 m_font = wxNullFont;
171 m_backgroundBrush = wxNullBrush;
172 m_selectedBitmap = wxNullBitmap;
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173}
174
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175// ---------------------------------------------------------------------------
176// clipping
177// ---------------------------------------------------------------------------
178
72cdf4c9 179void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch)
2bda0e17 180{
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181 m_clipping = TRUE;
182 m_clipX1 = (int)cx;
183 m_clipY1 = (int)cy;
184 m_clipX2 = (int)(cx + cw);
185 m_clipY2 = (int)(cy + ch);
a23fd0e1 186
7bcb11d3 187 DoClipping((WXHDC) m_hDC);
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188}
189
a23fd0e1 190void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
a724d789 191{
223d09f6 192 wxCHECK_RET( region.GetHRGN(), wxT("invalid clipping region") );
a23fd0e1 193
7bcb11d3 194 wxRect box = region.GetBox();
a23fd0e1 195
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196 m_clipping = TRUE;
197 m_clipX1 = box.x;
198 m_clipY1 = box.y;
199 m_clipX2 = box.x + box.width;
200 m_clipY2 = box.y + box.height;
a23fd0e1 201
1e6d9499 202#ifdef __WIN16__
a23fd0e1 203 SelectClipRgn(GetHdc(), (HRGN) region.GetHRGN());
1e6d9499 204#else
a23fd0e1 205 ExtSelectClipRgn(GetHdc(), (HRGN) region.GetHRGN(), RGN_AND);
1e6d9499 206#endif
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207}
208
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209void wxDC::DoClipping(WXHDC dc)
210{
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211 if (m_clipping && dc)
212 {
213 IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1),
a23fd0e1 214 XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2));
7bcb11d3 215 }
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216}
217
a23fd0e1 218void wxDC::DestroyClippingRegion()
2bda0e17 219{
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220 if (m_clipping && m_hDC)
221 {
222 // TODO: this should restore the previous clipping region,
223 // so that OnPaint processing works correctly, and the update clipping region
224 // doesn't get destroyed after the first DestroyClippingRegion.
225 HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
a23fd0e1 226 SelectClipRgn(GetHdc(), rgn);
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227 DeleteObject(rgn);
228 }
229 m_clipping = FALSE;
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230}
231
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232// ---------------------------------------------------------------------------
233// query capabilities
234// ---------------------------------------------------------------------------
235
236bool wxDC::CanDrawBitmap() const
2bda0e17 237{
7bcb11d3 238 return TRUE;
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239}
240
a23fd0e1 241bool wxDC::CanGetTextExtent() const
2bda0e17 242{
7bcb11d3 243 // What sort of display is it?
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244 int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
245
246 return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
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247}
248
a23fd0e1 249int wxDC::GetDepth() const
2bda0e17 250{
a23fd0e1 251 return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
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252}
253
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254// ---------------------------------------------------------------------------
255// drawing
256// ---------------------------------------------------------------------------
257
258void wxDC::Clear()
2bda0e17 259{
7bcb11d3 260 RECT rect;
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261 if ( m_canvas )
262 {
7bcb11d3 263 GetClientRect((HWND) m_canvas->GetHWND(), &rect);
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264 }
265 else
7bcb11d3 266 {
223d09f6 267 wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") );
2506aab6 268
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269 rect.left = 0; rect.top = 0;
270 rect.right = m_selectedBitmap.GetWidth();
271 rect.bottom = m_selectedBitmap.GetHeight();
272 }
2506aab6 273
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274 (void) ::SetMapMode(GetHdc(), MM_TEXT);
275
276 DWORD colour = GetBkColor(GetHdc());
7bcb11d3 277 HBRUSH brush = CreateSolidBrush(colour);
a23fd0e1 278 FillRect(GetHdc(), &rect, brush);
7bcb11d3 279 DeleteObject(brush);
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280
281 ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
282 ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
283 ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL);
284 ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
285 ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
286}
287
72cdf4c9 288void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
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289{
290 (void)ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
291 col.GetPixel(),
292 style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
293 : FLOODFILLBORDER);
294
7bcb11d3 295 CalcBoundingBox(x, y);
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296}
297
72cdf4c9 298bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
2bda0e17 299{
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300 // added by steve 29.12.94 (copied from DrawPoint)
301 // returns TRUE for pixels in the color of the current pen
302 // and FALSE for all other pixels colors
303 // if col is non-NULL return the color of the pixel
a23fd0e1 304
7bcb11d3 305 // get the color of the pixel
a23fd0e1 306 COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
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307 // get the color of the pen
308 COLORREF pencolor = 0x00ffffff;
309 if (m_pen.Ok())
310 {
a23fd0e1 311 pencolor = m_pen.GetColour().GetPixel();
7bcb11d3 312 }
a23fd0e1 313
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314 // return the color of the pixel
315 if(col)
316 col->Set(GetRValue(pixelcolor),GetGValue(pixelcolor),GetBValue(pixelcolor));
a23fd0e1 317
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318 // check, if color of the pixels is the same as the color
319 // of the current pen
320 return(pixelcolor==pencolor);
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321}
322
72cdf4c9 323void wxDC::DoCrossHair(wxCoord x, wxCoord y)
a23fd0e1 324{
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325 wxCoord x1 = x-VIEWPORT_EXTENT;
326 wxCoord y1 = y-VIEWPORT_EXTENT;
327 wxCoord x2 = x+VIEWPORT_EXTENT;
328 wxCoord y2 = y+VIEWPORT_EXTENT;
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329
330 (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL);
331 (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y));
332
333 (void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL);
334 (void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2));
335
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336 CalcBoundingBox(x1, y1);
337 CalcBoundingBox(x2, y2);
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338}
339
72cdf4c9 340void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
2bda0e17 341{
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342 (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL);
343 (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2));
344
7bcb11d3 345 /* MATTHEW: [6] New normalization */
2bda0e17 346#if WX_STANDARD_GRAPHICS
a23fd0e1 347 (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2));
2bda0e17 348#endif
a23fd0e1 349
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350 CalcBoundingBox(x1, y1);
351 CalcBoundingBox(x2, y2);
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352}
353
72cdf4c9 354void wxDC::DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2, wxCoord xc, wxCoord yc)
2bda0e17 355{
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356 double dx = xc-x1;
357 double dy = yc-y1;
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358 double radius = (double)sqrt(dx*dx+dy*dy) ;;
359 if (x1==x2 && x2==y2)
360 {
72cdf4c9 361 DrawEllipse(xc,yc,(wxCoord)(radius*2.0),(wxCoord)(radius*2.0));
a23fd0e1 362 return;
7bcb11d3 363 }
a23fd0e1 364
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365 wxCoord xx1 = XLOG2DEV(x1);
366 wxCoord yy1 = YLOG2DEV(y1);
367 wxCoord xx2 = XLOG2DEV(x2);
368 wxCoord yy2 = YLOG2DEV(y2);
369 wxCoord xxc = XLOG2DEV(xc);
370 wxCoord yyc = YLOG2DEV(yc);
371 wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1)));
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372
373 (void)MoveToEx(GetHdc(), (int) xx1, (int) yy1, NULL);
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374 wxCoord xxx1 = (wxCoord) (xxc-ray);
375 wxCoord yyy1 = (wxCoord) (yyc-ray);
376 wxCoord xxx2 = (wxCoord) (xxc+ray);
377 wxCoord yyy2 = (wxCoord) (yyc+ray);
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378 if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT)
379 {
380 // Have to add 1 to bottom-right corner of rectangle
381 // to make semi-circles look right (crooked line otherwise).
382 // Unfortunately this is not a reliable method, depends
383 // on the size of shape.
384 // TODO: figure out why this happens!
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385 Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1,
386 xx1,yy1,xx2,yy2);
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387 }
388 else
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389 Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2,
390 xx1,yy1,xx2,yy2);
391
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392 CalcBoundingBox((wxCoord)(xc-radius), (wxCoord)(yc-radius));
393 CalcBoundingBox((wxCoord)(xc+radius), (wxCoord)(yc+radius));
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394}
395
72cdf4c9 396void wxDC::DoDrawPoint(wxCoord x, wxCoord y)
2bda0e17 397{
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398 COLORREF color = 0x00ffffff;
399 if (m_pen.Ok())
400 {
a23fd0e1 401 color = m_pen.GetColour().GetPixel();
7bcb11d3 402 }
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403
404 SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
405
7bcb11d3 406 CalcBoundingBox(x, y);
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407}
408
72cdf4c9 409void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
2bda0e17 410{
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411 // Do things less efficiently if we have offsets
412 if (xoffset != 0 || yoffset != 0)
6a6c0a8b 413 {
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414 POINT *cpoints = new POINT[n];
415 int i;
416 for (i = 0; i < n; i++)
417 {
418 cpoints[i].x = (int)(points[i].x + xoffset);
419 cpoints[i].y = (int)(points[i].y + yoffset);
a23fd0e1 420
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421 CalcBoundingBox(cpoints[i].x, cpoints[i].y);
422 }
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423 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
424 (void)Polygon(GetHdc(), cpoints, n);
425 SetPolyFillMode(GetHdc(),prev);
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426 delete[] cpoints;
427 }
428 else
429 {
430 int i;
431 for (i = 0; i < n; i++)
432 CalcBoundingBox(points[i].x, points[i].y);
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433
434 int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
435 (void)Polygon(GetHdc(), (POINT*) points, n);
436 SetPolyFillMode(GetHdc(),prev);
6a6c0a8b 437 }
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438}
439
72cdf4c9 440void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
2bda0e17 441{
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442 // Do things less efficiently if we have offsets
443 if (xoffset != 0 || yoffset != 0)
6a6c0a8b 444 {
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445 POINT *cpoints = new POINT[n];
446 int i;
447 for (i = 0; i < n; i++)
448 {
449 cpoints[i].x = (int)(points[i].x + xoffset);
450 cpoints[i].y = (int)(points[i].y + yoffset);
a23fd0e1 451
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452 CalcBoundingBox(cpoints[i].x, cpoints[i].y);
453 }
a23fd0e1 454 (void)Polyline(GetHdc(), cpoints, n);
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455 delete[] cpoints;
456 }
457 else
458 {
459 int i;
460 for (i = 0; i < n; i++)
461 CalcBoundingBox(points[i].x, points[i].y);
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462
463 (void)Polyline(GetHdc(), (POINT*) points, n);
6a6c0a8b 464 }
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465}
466
72cdf4c9 467void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
2bda0e17 468{
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469 wxCoord x2 = x + width;
470 wxCoord y2 = y + height;
a23fd0e1 471
7bcb11d3 472 /* MATTHEW: [6] new normalization */
2bda0e17 473#if WX_STANDARD_GRAPHICS
7bcb11d3 474 bool do_brush, do_pen;
a23fd0e1 475
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476 do_brush = m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT;
477 do_pen = m_pen.Ok() && m_pen.GetStyle() != wxTRANSPARENT;
a23fd0e1 478
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479 if (do_brush) {
480 HPEN orig_pen = NULL;
a23fd0e1 481
7bcb11d3 482 if (do_pen || !m_pen.Ok())
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483 orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
484
485 (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
7bcb11d3 486 XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1);
a23fd0e1 487
7bcb11d3 488 if (do_pen || !m_pen.Ok())
a23fd0e1 489 ::SelectObject(GetHdc() , orig_pen);
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490 }
491 if (do_pen) {
492 HBRUSH orig_brush = NULL;
a23fd0e1 493
7bcb11d3 494 if (do_brush || !m_brush.Ok())
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495 orig_brush = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH) ::GetStockObject(NULL_BRUSH));
496
497 (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
7bcb11d3 498 XLOG2DEV(x2), YLOG2DEV(y2));
a23fd0e1 499
7bcb11d3 500 if (do_brush || !m_brush.Ok())
a23fd0e1 501 ::SelectObject(GetHdc(), orig_brush);
7bcb11d3 502 }
2bda0e17 503#else
a23fd0e1 504 (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
2bda0e17 505#endif
a23fd0e1 506
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507 CalcBoundingBox(x, y);
508 CalcBoundingBox(x2, y2);
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509}
510
72cdf4c9 511void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
2bda0e17 512{
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513 // Now, a negative radius value is interpreted to mean
514 // 'the proportion of the smallest X or Y dimension'
a23fd0e1 515
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516 if (radius < 0.0)
517 {
518 double smallest = 0.0;
519 if (width < height)
520 smallest = width;
521 else
522 smallest = height;
523 radius = (- radius * smallest);
524 }
a23fd0e1 525
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526 wxCoord x2 = (x+width);
527 wxCoord y2 = (y+height);
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528
529 (void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
25889d3c 530 YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius)));
a23fd0e1 531
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532 CalcBoundingBox(x, y);
533 CalcBoundingBox(x2, y2);
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534}
535
72cdf4c9 536void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
2bda0e17 537{
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538 wxCoord x2 = (x+width);
539 wxCoord y2 = (y+height);
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540
541 (void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
542
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543 CalcBoundingBox(x, y);
544 CalcBoundingBox(x2, y2);
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545}
546
6f65e337 547// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
72cdf4c9 548void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
6f65e337 549{
72cdf4c9
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550 wxCoord x2 = (x+w);
551 wxCoord y2 = (y+h);
a23fd0e1 552
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553 int rx1 = XLOG2DEV(x+w/2);
554 int ry1 = YLOG2DEV(y+h/2);
555 int rx2 = rx1;
556 int ry2 = ry1;
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557
558 sa = DegToRad(sa);
559 ea = DegToRad(ea);
560
561 rx1 += (int)(100.0 * abs(w) * cos(sa));
562 ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
563 rx2 += (int)(100.0 * abs(w) * cos(ea));
564 ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));
a23fd0e1 565
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566 // draw pie with NULL_PEN first and then outline otherwise a line is
567 // drawn from the start and end points to the centre
a23fd0e1 568 HPEN orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
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569 if (m_signY > 0)
570 {
a23fd0e1 571 (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
7bcb11d3
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572 rx1, ry1, rx2, ry2);
573 }
574 else
575 {
a23fd0e1 576 (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
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577 rx1, ry1-1, rx2, ry2-1);
578 }
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579 ::SelectObject(GetHdc(), orig_pen);
580 (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
fd3f686c 581 rx1, ry1, rx2, ry2);
a23fd0e1 582
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583 CalcBoundingBox(x, y);
584 CalcBoundingBox(x2, y2);
6f65e337
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585}
586
72cdf4c9 587void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
2bda0e17 588{
57c208c5 589#if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__)
a23fd0e1 590 ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON(),
7bcb11d3 591 icon.GetWidth(), icon.GetHeight(), 0, 0, DI_NORMAL);
f60d0f94 592#else
a23fd0e1 593 ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON());
f60d0f94 594#endif
a23fd0e1 595
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596 CalcBoundingBox(x, y);
597 CalcBoundingBox(x+icon.GetWidth(), y+icon.GetHeight());
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598}
599
72cdf4c9 600void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
f5419957
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601{
602 if (!bmp.Ok())
603 return;
a23fd0e1 604
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605 // If we're not drawing transparently, and not drawing to a printer,
606 // optimize this function to use Windows functions.
607 if (!useMask && !IsKindOf(CLASSINFO(wxPrinterDC)))
608 {
a23fd0e1 609 HDC cdc = GetHdc();
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610 HDC memdc = ::CreateCompatibleDC( cdc );
611 HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
10fcf31a 612
223d09f6 613 wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
10fcf31a 614
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615 ::SelectObject( memdc, hbitmap );
616 ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY);
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617 ::DeleteDC( memdc );
618 }
619 else
620 {
621 // Rather than reproduce wxDC::Blit, let's do it at the wxWin API level
622 wxMemoryDC memDC;
623 memDC.SelectObject(bmp);
a23fd0e1 624
f5419957 625 /* Not sure if we need this. The mask should leave the
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626 * masked areas as per the original background of this DC.
627 */
628 /*
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629 // There might be transparent areas, so make these
630 // the same colour as this DC
631 memDC.SetBackground(* GetBackground());
632 memDC.Clear();
7bcb11d3 633 */
a23fd0e1 634
f5419957 635 Blit(x, y, bmp.GetWidth(), bmp.GetHeight(), & memDC, 0, 0, wxCOPY, useMask);
a23fd0e1 636
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637 memDC.SelectObject(wxNullBitmap);
638 }
639}
640
72cdf4c9 641void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
a23fd0e1 642{
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643 DrawAnyText(text, x, y);
644
645 // update the bounding box
646 CalcBoundingBox(x, y);
647
648 wxCoord w, h;
649 GetTextExtent(text, &w, &h);
650 CalcBoundingBox(x + w, y + h);
651}
652
653void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
654{
655 // prepare for drawing the text
656 if ( m_textForegroundColour.Ok() )
657 SetTextColor(GetHdc(), m_textForegroundColour.GetPixel());
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658
659 DWORD old_background = 0;
4314ec48 660 if ( m_textBackgroundColour.Ok() )
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661 {
662 old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
663 }
664
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665 SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
666 : OPAQUE);
a23fd0e1 667
4314ec48 668 if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
696e1ea0 669 text.c_str(), text.length()) == 0 )
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670 {
671 wxLogLastError("TextOut");
672 }
a23fd0e1 673
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674 // restore the old parameters (text foreground colour may be left because
675 // it never is set to anything else, but background should remain
676 // transparent even if we just drew an opaque string)
677 if ( m_textBackgroundColour.Ok() )
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678 (void)SetBkColor(GetHdc(), old_background);
679
c45a644e 680 SetBkMode(GetHdc(), TRANSPARENT);
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681}
682
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683void wxDC::DoDrawRotatedText(const wxString& text,
684 wxCoord x, wxCoord y,
685 double angle)
686{
696e1ea0
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687 // we test that we have some font because otherwise we should still use the
688 // "else" part below to avoid that DrawRotatedText(angle = 180) and
689 // DrawRotatedText(angle = 0) use different fonts (we can't use the default
690 // font for drawing rotated fonts unfortunately)
691 if ( (angle == 0.0) && m_font.Ok() )
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692 {
693 DoDrawText(text, x, y);
694 }
695 else
696 {
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697 // NB: don't take DEFAULT_GUI_FONT because it's not TrueType and so
698 // can't have non zero orientation/escapement
699 wxFont font = m_font.Ok() ? m_font : *wxNORMAL_FONT;
700 HFONT hfont = (HFONT)font.GetResourceHandle();
4314ec48 701 LOGFONT lf;
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702 if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
703 {
704 wxLogLastError("GetObject(hfont)");
705 }
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706
707 // GDI wants the angle in tenth of degree
708 long angle10 = (long)(angle * 10);
709 lf.lfEscapement = angle10;
710 lf. lfOrientation = angle10;
711
696e1ea0 712 hfont = ::CreateFontIndirect(&lf);
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713 if ( !hfont )
714 {
715 wxLogLastError("CreateFont");
716 }
717 else
718 {
696e1ea0 719 HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont);
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720
721 DrawAnyText(text, x, y);
722
723 (void)::SelectObject(GetHdc(), hfontOld);
724 }
725
726 // call the bounding box by adding all four vertices of the rectangle
727 // containing the text to it (simpler and probably not slower than
728 // determining which of them is really topmost/leftmost/...)
729 wxCoord w, h;
730 GetTextExtent(text, &w, &h);
731
732 double rad = DegToRad(angle);
733
734 // "upper left" and "upper right"
735 CalcBoundingBox(x, y);
736 CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
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737
738 // "bottom left" and "bottom right"
739 x += (wxCoord)(h*sin(rad));
740 y += (wxCoord)(h*cos(rad));
741 CalcBoundingBox(x, y);
742 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
743 }
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744}
745
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746// ---------------------------------------------------------------------------
747// set GDI objects
748// ---------------------------------------------------------------------------
749
750void wxDC::SetPalette(const wxPalette& palette)
751{
752 // Set the old object temporarily, in case the assignment deletes an object
753 // that's not yet selected out.
754 if (m_oldPalette)
755 {
756 ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE);
757 m_oldPalette = 0;
758 }
759
760 m_palette = palette;
761
762 if (!m_palette.Ok())
763 {
764 // Setting a NULL colourmap is a way of restoring
765 // the original colourmap
766 if (m_oldPalette)
767 {
768 ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE);
769 m_oldPalette = 0;
770 }
771
772 return;
773 }
774
775 if (m_palette.Ok() && m_palette.GetHPALETTE())
776 {
777 HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE);
778 if (!m_oldPalette)
779 m_oldPalette = (WXHPALETTE) oldPal;
780
781 ::RealizePalette(GetHdc());
782 }
783}
784
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785void wxDC::SetFont(const wxFont& the_font)
786{
7bcb11d3
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787 // Set the old object temporarily, in case the assignment deletes an object
788 // that's not yet selected out.
2bda0e17 789 if (m_oldFont)
34da0970 790 {
a23fd0e1 791 ::SelectObject(GetHdc(), (HFONT) m_oldFont);
7bcb11d3
JS
792 m_oldFont = 0;
793 }
a23fd0e1 794
7bcb11d3 795 m_font = the_font;
a23fd0e1 796
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797 if (!the_font.Ok())
798 {
799 if (m_oldFont)
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800 ::SelectObject(GetHdc(), (HFONT) m_oldFont);
801 m_oldFont = 0;
7bcb11d3 802 }
a23fd0e1 803
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804 if (m_font.Ok() && m_font.GetResourceHandle())
805 {
a23fd0e1 806 HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle());
7bcb11d3
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807 if (f == (HFONT) NULL)
808 {
223d09f6 809 wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
7bcb11d3
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810 }
811 if (!m_oldFont)
812 m_oldFont = (WXHFONT) f;
34da0970 813 }
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814}
815
816void wxDC::SetPen(const wxPen& pen)
817{
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818 // Set the old object temporarily, in case the assignment deletes an object
819 // that's not yet selected out.
2bda0e17 820 if (m_oldPen)
2bda0e17 821 {
a23fd0e1 822 ::SelectObject(GetHdc(), (HPEN) m_oldPen);
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823 m_oldPen = 0;
824 }
a23fd0e1 825
7bcb11d3 826 m_pen = pen;
a23fd0e1 827
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828 if (!m_pen.Ok())
829 {
830 if (m_oldPen)
a23fd0e1
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831 ::SelectObject(GetHdc(), (HPEN) m_oldPen);
832 m_oldPen = 0;
7bcb11d3 833 }
a23fd0e1 834
7bcb11d3
JS
835 if (m_pen.Ok())
836 {
837 if (m_pen.GetResourceHandle())
838 {
a23fd0e1 839 HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle());
7bcb11d3
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840 if (!m_oldPen)
841 m_oldPen = (WXHPEN) p;
842 }
2bda0e17 843 }
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844}
845
846void wxDC::SetBrush(const wxBrush& brush)
847{
7bcb11d3
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848 // Set the old object temporarily, in case the assignment deletes an object
849 // that's not yet selected out.
2bda0e17 850 if (m_oldBrush)
2bda0e17 851 {
a23fd0e1 852 ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
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853 m_oldBrush = 0;
854 }
a23fd0e1 855
7bcb11d3 856 m_brush = brush;
a23fd0e1 857
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858 if (!m_brush.Ok())
859 {
860 if (m_oldBrush)
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861 ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
862 m_oldBrush = 0;
7bcb11d3 863 }
a23fd0e1 864
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865 if (m_brush.Ok())
866 {
867 if (m_brush.GetResourceHandle())
868 {
869 HBRUSH b = 0;
a23fd0e1 870 b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle());
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871 if (!m_oldBrush)
872 m_oldBrush = (WXHBRUSH) b;
873 }
2bda0e17 874 }
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875}
876
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877void wxDC::SetBackground(const wxBrush& brush)
878{
7bcb11d3 879 m_backgroundBrush = brush;
a23fd0e1 880
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JS
881 if (!m_backgroundBrush.Ok())
882 return;
a23fd0e1 883
7bcb11d3 884 if (m_canvas)
2bda0e17 885 {
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886 bool customColours = TRUE;
887 // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
888 // change background colours from the control-panel specified colours.
889 if (m_canvas->IsKindOf(CLASSINFO(wxWindow)) && ((m_canvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
890 customColours = FALSE;
a23fd0e1 891
7bcb11d3
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892 if (customColours)
893 {
894 if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
895 {
cc2b7472 896 m_canvas->SetTransparent(TRUE);
7bcb11d3
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897 }
898 else
899 {
900 // New behaviour, 10/2/99: setting the background brush of a DC
901 // doesn't affect the window background colour. However,
902 // I'm leaving in the transparency setting because it's needed by
903 // various controls (e.g. wxStaticText) to determine whether to draw
904 // transparently or not. TODO: maybe this should be a new function
905 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
906 // parent?
907 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
cc2b7472 908 m_canvas->SetTransparent(FALSE);
7bcb11d3
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909 }
910 }
911 }
a23fd0e1 912 COLORREF new_color = m_backgroundBrush.GetColour().GetPixel();
7bcb11d3 913 {
a23fd0e1 914 (void)SetBkColor(GetHdc(), new_color);
2bda0e17 915 }
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916}
917
918void wxDC::SetBackgroundMode(int mode)
919{
7bcb11d3 920 m_backgroundMode = mode;
a23fd0e1 921
c45a644e
RR
922 // SetBackgroundColour now only refers to text background
923 // and m_backgroundMode is used there
924
925/*
7bcb11d3 926 if (m_backgroundMode == wxTRANSPARENT)
a23fd0e1 927 ::SetBkMode(GetHdc(), TRANSPARENT);
7bcb11d3 928 else
c45a644e
RR
929 ::SetBkMode(GetHdc(), OPAQUE);
930*/
2bda0e17
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931}
932
933void wxDC::SetLogicalFunction(int function)
934{
7bcb11d3 935 m_logicalFunction = function;
a23fd0e1 936
7bcb11d3 937 SetRop((WXHDC) m_hDC);
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938}
939
940void wxDC::SetRop(WXHDC dc)
941{
7bcb11d3
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942 if (!dc || m_logicalFunction < 0)
943 return;
a23fd0e1 944
7bcb11d3
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945 int c_rop;
946 // These may be wrong
947 switch (m_logicalFunction)
948 {
949 // case wxXOR: c_rop = R2_XORPEN; break;
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950 case wxXOR: c_rop = R2_NOTXORPEN; break;
951 case wxINVERT: c_rop = R2_NOT; break;
952 case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break;
953 case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break;
954 case wxCLEAR: c_rop = R2_WHITE; break;
955 case wxSET: c_rop = R2_BLACK; break;
956 case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break;
957 case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break;
958 case wxAND: c_rop = R2_MASKPEN; break;
959 case wxOR: c_rop = R2_MERGEPEN; break;
960 case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break;
961 case wxEQUIV:
962 case wxNAND:
963 case wxCOPY:
964 default:
7bcb11d3
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965 c_rop = R2_COPYPEN; break;
966 }
967 SetROP2((HDC) dc, c_rop);
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968}
969
970bool wxDC::StartDoc(const wxString& message)
971{
7bcb11d3 972 // We might be previewing, so return TRUE to let it continue.
2bda0e17 973 return TRUE;
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974}
975
a23fd0e1 976void wxDC::EndDoc()
2bda0e17 977{
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978}
979
a23fd0e1 980void wxDC::StartPage()
2bda0e17 981{
2bda0e17
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982}
983
a23fd0e1 984void wxDC::EndPage()
2bda0e17 985{
2bda0e17
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986}
987
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988// ---------------------------------------------------------------------------
989// text metrics
990// ---------------------------------------------------------------------------
991
72cdf4c9 992wxCoord wxDC::GetCharHeight() const
2bda0e17 993{
7bcb11d3 994 TEXTMETRIC lpTextMetric;
a23fd0e1
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995
996 GetTextMetrics(GetHdc(), &lpTextMetric);
997
7bcb11d3 998 return YDEV2LOGREL(lpTextMetric.tmHeight);
2bda0e17
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999}
1000
72cdf4c9 1001wxCoord wxDC::GetCharWidth() const
2bda0e17 1002{
7bcb11d3 1003 TEXTMETRIC lpTextMetric;
a23fd0e1
VZ
1004
1005 GetTextMetrics(GetHdc(), &lpTextMetric);
1006
7bcb11d3 1007 return XDEV2LOGREL(lpTextMetric.tmAveCharWidth);
2bda0e17
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1008}
1009
72cdf4c9
VZ
1010void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
1011 wxCoord *descent, wxCoord *externalLeading,
1012 wxFont *theFont) const
2bda0e17 1013{
7bcb11d3
JS
1014 wxFont *fontToUse = (wxFont*) theFont;
1015 if (!fontToUse)
1016 fontToUse = (wxFont*) &m_font;
a23fd0e1 1017
7bcb11d3
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1018 SIZE sizeRect;
1019 TEXTMETRIC tm;
a23fd0e1 1020
837e5743 1021 GetTextExtentPoint(GetHdc(), WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect);
a23fd0e1
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1022 GetTextMetrics(GetHdc(), &tm);
1023
7bcb11d3
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1024 if (x) *x = XDEV2LOGREL(sizeRect.cx);
1025 if (y) *y = YDEV2LOGREL(sizeRect.cy);
1026 if (descent) *descent = tm.tmDescent;
1027 if (externalLeading) *externalLeading = tm.tmExternalLeading;
2bda0e17
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1028}
1029
1030void wxDC::SetMapMode(int mode)
1031{
7bcb11d3 1032 m_mappingMode = mode;
a23fd0e1 1033
7bcb11d3
JS
1034 int pixel_width = 0;
1035 int pixel_height = 0;
1036 int mm_width = 0;
1037 int mm_height = 0;
a23fd0e1
VZ
1038
1039 pixel_width = GetDeviceCaps(GetHdc(), HORZRES);
1040 pixel_height = GetDeviceCaps(GetHdc(), VERTRES);
1041 mm_width = GetDeviceCaps(GetHdc(), HORZSIZE);
1042 mm_height = GetDeviceCaps(GetHdc(), VERTSIZE);
1043
7bcb11d3 1044 if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0))
2bda0e17 1045 {
7bcb11d3 1046 return;
2bda0e17 1047 }
a23fd0e1 1048
7bcb11d3
JS
1049 double mm2pixelsX = pixel_width/mm_width;
1050 double mm2pixelsY = pixel_height/mm_height;
a23fd0e1 1051
7bcb11d3 1052 switch (mode)
2bda0e17 1053 {
7bcb11d3
JS
1054 case wxMM_TWIPS:
1055 {
1056 m_logicalScaleX = (twips2mm * mm2pixelsX);
1057 m_logicalScaleY = (twips2mm * mm2pixelsY);
1058 break;
1059 }
1060 case wxMM_POINTS:
1061 {
1062 m_logicalScaleX = (pt2mm * mm2pixelsX);
1063 m_logicalScaleY = (pt2mm * mm2pixelsY);
1064 break;
1065 }
e3065973 1066 case wxMM_METRIC:
7bcb11d3
JS
1067 {
1068 m_logicalScaleX = mm2pixelsX;
1069 m_logicalScaleY = mm2pixelsY;
1070 break;
1071 }
e3065973 1072 case wxMM_LOMETRIC:
7bcb11d3
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1073 {
1074 m_logicalScaleX = (mm2pixelsX/10.0);
1075 m_logicalScaleY = (mm2pixelsY/10.0);
1076 break;
1077 }
2bda0e17 1078 default:
e3065973 1079 case wxMM_TEXT:
7bcb11d3
JS
1080 {
1081 m_logicalScaleX = 1.0;
1082 m_logicalScaleY = 1.0;
1083 break;
1084 }
2bda0e17 1085 }
a23fd0e1
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1086
1087 if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC)
1088 ::SetMapMode(GetHdc(), MM_ANISOTROPIC);
1089
1090 SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
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1091 m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT);
1092 m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT);
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1093 ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL);
1094 ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
1095 ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
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1096}
1097
1098void wxDC::SetUserScale(double x, double y)
1099{
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JS
1100 m_userScaleX = x;
1101 m_userScaleY = y;
a23fd0e1 1102
7bcb11d3 1103 SetMapMode(m_mappingMode);
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1104}
1105
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1106void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
1107{
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JS
1108 m_signX = xLeftRight ? 1 : -1;
1109 m_signY = yBottomUp ? -1 : 1;
a23fd0e1 1110
7bcb11d3 1111 SetMapMode(m_mappingMode);
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JS
1112}
1113
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1114void wxDC::SetSystemScale(double x, double y)
1115{
a23fd0e1
VZ
1116 m_scaleX = x;
1117 m_scaleY = y;
1118
7bcb11d3 1119 SetMapMode(m_mappingMode);
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1120}
1121
72cdf4c9 1122void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y)
2bda0e17 1123{
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JS
1124 m_logicalOriginX = x;
1125 m_logicalOriginY = y;
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VZ
1126
1127 ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
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1128}
1129
72cdf4c9 1130void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y)
2bda0e17 1131{
7bcb11d3
JS
1132 m_deviceOriginX = x;
1133 m_deviceOriginY = y;
2bda0e17 1134
a23fd0e1 1135 ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
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1136}
1137
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VZ
1138// ---------------------------------------------------------------------------
1139// coordinates transformations
1140// ---------------------------------------------------------------------------
2bda0e17 1141
72cdf4c9 1142wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
2bda0e17 1143{
72cdf4c9 1144 return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
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1145}
1146
72cdf4c9 1147wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2bda0e17 1148{
72cdf4c9 1149 return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX));
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1150}
1151
72cdf4c9 1152wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2bda0e17 1153{
72cdf4c9 1154 return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
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1155}
1156
72cdf4c9 1157wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2bda0e17 1158{
72cdf4c9 1159 return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY));
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1160}
1161
72cdf4c9 1162wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2bda0e17 1163{
72cdf4c9 1164 return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
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1165}
1166
72cdf4c9 1167wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2bda0e17 1168{
72cdf4c9 1169 return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX);
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1170}
1171
72cdf4c9 1172wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2bda0e17 1173{
72cdf4c9 1174 return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
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1175}
1176
72cdf4c9 1177wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2bda0e17 1178{
72cdf4c9 1179 return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY);
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1180}
1181
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1182// ---------------------------------------------------------------------------
1183// bit blit
1184// ---------------------------------------------------------------------------
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1185bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
1186 wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop, bool useMask)
2bda0e17 1187{
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VZ
1188 wxCoord xdest1 = xdest;
1189 wxCoord ydest1 = ydest;
1190 wxCoord xsrc1 = xsrc;
1191 wxCoord ysrc1 = ysrc;
a23fd0e1 1192
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1193 // Chris Breeze 18/5/98: use text foreground/background colours
1194 // when blitting from 1-bit bitmaps
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1195 COLORREF old_textground = ::GetTextColor(GetHdc());
1196 COLORREF old_background = ::GetBkColor(GetHdc());
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1197 if (m_textForegroundColour.Ok())
1198 {
a23fd0e1 1199 ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
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1200 }
1201 if (m_textBackgroundColour.Ok())
1202 {
a23fd0e1 1203 ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
7bcb11d3 1204 }
a23fd0e1 1205
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1206 DWORD dwRop = rop == wxCOPY ? SRCCOPY :
1207 rop == wxCLEAR ? WHITENESS :
1208 rop == wxSET ? BLACKNESS :
1209 rop == wxINVERT ? DSTINVERT :
1210 rop == wxAND ? MERGECOPY :
1211 rop == wxOR ? MERGEPAINT :
1212 rop == wxSRC_INVERT ? NOTSRCCOPY :
1213 rop == wxXOR ? SRCINVERT :
1214 rop == wxOR_REVERSE ? MERGEPAINT :
1215 rop == wxAND_REVERSE ? SRCERASE :
1216 rop == wxSRC_OR ? SRCPAINT :
1217 rop == wxSRC_AND ? SRCAND :
1218 SRCCOPY;
a23fd0e1 1219
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1220 bool success = TRUE;
1221 if (useMask && source->m_selectedBitmap.Ok() && source->m_selectedBitmap.GetMask())
1222 {
a23fd0e1 1223
2bda0e17 1224#if 0 // __WIN32__
7bcb11d3 1225 // Not implemented under Win95 (or maybe a specific device?)
a23fd0e1 1226 if (MaskBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
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1227 (HDC) source->m_hDC, xsrc1, ysrc1, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap(),
1228 0, 0, 0xAACC0020))
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1229 {
1230 // Success
1231 }
1232 else
2bda0e17 1233#endif
7bcb11d3
JS
1234 {
1235 // Old code
2bda0e17 1236#if 0
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1237 HDC dc_mask = CreateCompatibleDC((HDC) source->m_hDC);
1238 ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
a23fd0e1 1239 success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
7bcb11d3 1240 dc_mask, xsrc1, ysrc1, 0x00220326 /* NOTSRCAND */) != 0);
a23fd0e1 1241 success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
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1242 (HDC) source->m_hDC, xsrc1, ysrc1, SRCPAINT) != 0);
1243 ::SelectObject(dc_mask, 0);
1244 ::DeleteDC(dc_mask);
2bda0e17 1245#endif
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1246 // New code from Chris Breeze, 15/7/98
1247 // Blit bitmap with mask
a23fd0e1 1248
7bcb11d3
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1249 if (IsKindOf(CLASSINFO(wxPrinterDC)))
1250 {
1251 // If we are printing source colours are screen colours
1252 // not printer colours and so we need copy the bitmap
1253 // pixel by pixel.
1254 RECT rect;
1255 HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
1256 HDC dc_src = (HDC) source->m_hDC;
a23fd0e1 1257
7bcb11d3
JS
1258 ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
1259 for (int x = 0; x < width; x++)
1260 {
1261 for (int y = 0; y < height; y++)
1262 {
1263 COLORREF cref = ::GetPixel(dc_mask, x, y);
1264 if (cref)
1265 {
1266 HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
1267 rect.left = xdest1 + x; rect.right = rect.left + 1;
1268 rect.top = ydest1 + y; rect.bottom = rect.top + 1;
a23fd0e1 1269 ::FillRect(GetHdc(), &rect, brush);
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1270 ::DeleteObject(brush);
1271 }
1272 }
1273 }
1274 ::SelectObject(dc_mask, 0);
1275 ::DeleteDC(dc_mask);
1276 }
1277 else
1278 {
1279 // create a temp buffer bitmap and DCs to access it and the mask
1280 HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC);
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1281 HDC dc_buffer = ::CreateCompatibleDC(GetHdc());
1282 HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height);
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1283 ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap());
1284 ::SelectObject(dc_buffer, buffer_bmap);
a23fd0e1 1285
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1286 // copy dest to buffer
1287 ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
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1288 GetHdc(), xdest1, ydest1, SRCCOPY);
1289
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1290 // copy src to buffer using selected raster op
1291 ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
1292 (HDC) source->m_hDC, xsrc1, ysrc1, dwRop);
a23fd0e1 1293
7bcb11d3 1294 // set masked area in buffer to BLACK (pixel value 0)
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1295 COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255));
1296 COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0));
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1297 ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
1298 dc_mask, xsrc1, ysrc1, SRCAND);
a23fd0e1 1299
7bcb11d3 1300 // set unmasked area in dest to BLACK
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1301 ::SetBkColor(GetHdc(), RGB(0, 0, 0));
1302 ::SetTextColor(GetHdc(), RGB(255, 255, 255));
1303 ::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
7bcb11d3 1304 dc_mask, xsrc1, ysrc1, SRCAND);
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1305 ::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
1306 ::SetTextColor(GetHdc(), prevCol);
1307
7bcb11d3 1308 // OR buffer to dest
a23fd0e1 1309 success = (::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height,
7bcb11d3 1310 dc_buffer, 0, 0, SRCPAINT) != 0);
a23fd0e1 1311
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1312 // tidy up temporary DCs and bitmap
1313 ::SelectObject(dc_mask, 0);
1314 ::DeleteDC(dc_mask);
1315 ::SelectObject(dc_buffer, 0);
1316 ::DeleteDC(dc_buffer);
1317 ::DeleteObject(buffer_bmap);
1318 }
1319 }
1320 }
1321 else
1322 {
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1323 if (IsKindOf(CLASSINFO(wxPrinterDC)))
1324 {
7bcb11d3 1325 // If we are printing, source colours are screen colours
fd3f686c
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1326 // not printer colours and so we need copy the bitmap
1327 // pixel by pixel.
fd3f686c 1328 HDC dc_src = (HDC) source->m_hDC;
7bcb11d3 1329 RECT rect;
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1330 for (int x = 0; x < width; x++)
1331 {
1332 for (int y = 0; y < height; y++)
1333 {
7bcb11d3
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1334 HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y));
1335 rect.left = xdest1 + x; rect.right = rect.left + 1;
1336 rect.top = ydest1 + y; rect.bottom = rect.top + 1;
a23fd0e1 1337 ::FillRect(GetHdc(), &rect, brush);
7bcb11d3 1338 ::DeleteObject(brush);
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1339 }
1340 }
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1341 }
1342 else
1343 {
a23fd0e1 1344 success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC,
7bcb11d3 1345 xsrc1, ysrc1, dwRop) != 0);
fd3f686c 1346 }
400735a8 1347 }
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1348 ::SetTextColor(GetHdc(), old_textground);
1349 ::SetBkColor(GetHdc(), old_background);
2bda0e17 1350
a23fd0e1 1351 return success;
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1352}
1353
a23fd0e1 1354void wxDC::DoGetSize(int *w, int *h) const
2bda0e17 1355{
a23fd0e1
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1356 if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES);
1357 if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES);
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1358}
1359
a23fd0e1 1360void wxDC::DoGetSizeMM(int *w, int *h) const
2bda0e17 1361{
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1362 if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE);
1363 if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE);
7bcb11d3 1364}
2bda0e17 1365
a23fd0e1 1366wxSize wxDC::GetPPI() const
7bcb11d3 1367{
a23fd0e1
VZ
1368 int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
1369 int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
2bda0e17 1370
a23fd0e1 1371 return wxSize(x, y);
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1372}
1373
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1374// For use by wxWindows only, unless custom units are required.
1375void wxDC::SetLogicalScale(double x, double y)
1376{
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JS
1377 m_logicalScaleX = x;
1378 m_logicalScaleY = y;
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1379}
1380
2bda0e17 1381#if WXWIN_COMPATIBILITY
a23fd0e1 1382void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
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1383 float *descent, float *externalLeading,
1384 wxFont *theFont, bool use16bit) const
2bda0e17 1385{
72cdf4c9 1386 wxCoord x1, y1, descent1, externalLeading1;
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1387 GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
1388 *x = x1; *y = y1;
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1389 if (descent)
1390 *descent = descent1;
1391 if (externalLeading)
1392 *externalLeading = externalLeading1;
1393}
1394#endif
8b9518ee 1395
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1396// ---------------------------------------------------------------------------
1397// spline drawing code
1398// ---------------------------------------------------------------------------
7b46ecac 1399
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1400#if wxUSE_SPLINES
1401
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1402class wxSpline: public wxObject
1403{
7bcb11d3
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1404public:
1405 int type;
1406 wxList *points;
a23fd0e1 1407
7bcb11d3 1408 wxSpline(wxList *list);
a23fd0e1
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1409 void DeletePoints();
1410
7bcb11d3 1411 // Doesn't delete points
a23fd0e1 1412 ~wxSpline();
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1413};
1414
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1415void wx_draw_open_spline(wxDC *dc, wxSpline *spline);
1416
1417void wx_quadratic_spline(double a1, double b1, double a2, double b2,
1418 double a3, double b3, double a4, double b4);
a23fd0e1 1419void wx_clear_stack();
dfad0599 1420int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
7bcb11d3 1421 double *y3, double *x4, double *y4);
dfad0599 1422void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
7bcb11d3 1423 double x4, double y4);
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1424static bool wx_spline_add_point(double x, double y);
1425static void wx_spline_draw_point_array(wxDC *dc);
1426wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3);
1427
a23fd0e1 1428void wxDC::DoDrawSpline(wxList *list)
dfad0599 1429{
7bcb11d3 1430 wxSpline spline(list);
a23fd0e1 1431
7bcb11d3 1432 wx_draw_open_spline(this, &spline);
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1433}
1434
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1435wxList wx_spline_point_list;
1436
1437void wx_draw_open_spline(wxDC *dc, wxSpline *spline)
1438{
1439 wxPoint *p;
1440 double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
1441 double x1, y1, x2, y2;
a23fd0e1 1442
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1443 wxNode *node = spline->points->First();
1444 p = (wxPoint *)node->Data();
a23fd0e1 1445
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1446 x1 = p->x;
1447 y1 = p->y;
a23fd0e1 1448
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1449 node = node->Next();
1450 p = (wxPoint *)node->Data();
a23fd0e1 1451
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1452 x2 = p->x;
1453 y2 = p->y;
1454 cx1 = (double)((x1 + x2) / 2);
1455 cy1 = (double)((y1 + y2) / 2);
1456 cx2 = (double)((cx1 + x2) / 2);
1457 cy2 = (double)((cy1 + y2) / 2);
a23fd0e1 1458
dfad0599 1459 wx_spline_add_point(x1, y1);
a23fd0e1 1460
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1461 while ((node = node->Next()) != NULL)
1462 {
1463 p = (wxPoint *)node->Data();
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1464 x1 = x2;
1465 y1 = y2;
1466 x2 = p->x;
1467 y2 = p->y;
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1468 cx4 = (double)(x1 + x2) / 2;
1469 cy4 = (double)(y1 + y2) / 2;
1470 cx3 = (double)(x1 + cx4) / 2;
1471 cy3 = (double)(y1 + cy4) / 2;
a23fd0e1 1472
dfad0599 1473 wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
a23fd0e1 1474
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1475 cx1 = cx4;
1476 cy1 = cy4;
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1477 cx2 = (double)(cx1 + x2) / 2;
1478 cy2 = (double)(cy1 + y2) / 2;
1479 }
a23fd0e1 1480
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1481 wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1));
1482 wx_spline_add_point(x2, y2);
a23fd0e1 1483
dfad0599 1484 wx_spline_draw_point_array(dc);
a23fd0e1 1485
dfad0599
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1486}
1487
1488/********************* CURVES FOR SPLINES *****************************
1489
7bcb11d3 1490 The following spline drawing routine is from
a23fd0e1 1491
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1492 "An Algorithm for High-Speed Curve Generation"
1493 by George Merrill Chaikin,
1494 Computer Graphics and Image Processing, 3, Academic Press,
1495 1974, 346-349.
a23fd0e1 1496
7bcb11d3 1497 and
a23fd0e1 1498
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1499 "On Chaikin's Algorithm" by R. F. Riesenfeld,
1500 Computer Graphics and Image Processing, 4, Academic Press,
1501 1975, 304-310.
a23fd0e1 1502
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1503***********************************************************************/
1504
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1505#define half(z1, z2) ((z1+z2)/2.0)
1506#define THRESHOLD 5
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1507
1508/* iterative version */
1509
1510void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
7bcb11d3 1511 double b4)
dfad0599
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1512{
1513 register double xmid, ymid;
1514 double x1, y1, x2, y2, x3, y3, x4, y4;
a23fd0e1 1515
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1516 wx_clear_stack();
1517 wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
a23fd0e1 1518
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1519 while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
1520 xmid = (double)half(x2, x3);
1521 ymid = (double)half(y2, y3);
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1522 if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
1523 fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
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1524 wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1));
1525 wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid));
7bcb11d3 1526 } else {
dfad0599 1527 wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
7bcb11d3 1528 (double)half(x3, x4), (double)half(y3, y4), x4, y4);
dfad0599 1529 wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
7bcb11d3
JS
1530 (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
1531 }
dfad0599
JS
1532 }
1533}
1534
1535
1536/* utilities used by spline drawing routines */
1537
1538
1539typedef struct wx_spline_stack_struct {
1540 double x1, y1, x2, y2, x3, y3, x4, y4;
1541}
7bcb11d3 1542Stack;
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1543
1544#define SPLINE_STACK_DEPTH 20
1545static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
1546static Stack *wx_stack_top;
1547static int wx_stack_count;
1548
a23fd0e1 1549void wx_clear_stack()
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1550{
1551 wx_stack_top = wx_spline_stack;
1552 wx_stack_count = 0;
1553}
1554
1555void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
1556{
1557 wx_stack_top->x1 = x1;
1558 wx_stack_top->y1 = y1;
1559 wx_stack_top->x2 = x2;
1560 wx_stack_top->y2 = y2;
1561 wx_stack_top->x3 = x3;
1562 wx_stack_top->y3 = y3;
1563 wx_stack_top->x4 = x4;
1564 wx_stack_top->y4 = y4;
1565 wx_stack_top++;
1566 wx_stack_count++;
1567}
1568
1569int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
1570 double *x3, double *y3, double *x4, double *y4)
1571{
1572 if (wx_stack_count == 0)
7bcb11d3 1573 return (0);
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1574 wx_stack_top--;
1575 wx_stack_count--;
1576 *x1 = wx_stack_top->x1;
1577 *y1 = wx_stack_top->y1;
1578 *x2 = wx_stack_top->x2;
1579 *y2 = wx_stack_top->y2;
1580 *x3 = wx_stack_top->x3;
1581 *y3 = wx_stack_top->y3;
1582 *x4 = wx_stack_top->x4;
1583 *y4 = wx_stack_top->y4;
1584 return (1);
1585}
1586
1587static bool wx_spline_add_point(double x, double y)
1588{
a23fd0e1 1589 wxPoint *point = new wxPoint;
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1590 point->x = (int) x;
1591 point->y = (int) y;
1592 wx_spline_point_list.Append((wxObject*)point);
1593 return TRUE;
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1594}
1595
1596static void wx_spline_draw_point_array(wxDC *dc)
1597{
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1598 dc->DrawLines(&wx_spline_point_list, 0, 0);
1599 wxNode *node = wx_spline_point_list.First();
1600 while (node)
1601 {
1602 wxPoint *point = (wxPoint *)node->Data();
1603 delete point;
1604 delete node;
1605 node = wx_spline_point_list.First();
1606 }
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1607}
1608
1609wxSpline::wxSpline(wxList *list)
1610{
7bcb11d3 1611 points = list;
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1612}
1613
a23fd0e1 1614wxSpline::~wxSpline()
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1615{
1616}
1617
a23fd0e1 1618void wxSpline::DeletePoints()
dfad0599 1619{
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1620 for(wxNode *node = points->First(); node; node = points->First())
1621 {
1622 wxPoint *point = (wxPoint *)node->Data();
1623 delete point;
1624 delete node;
1625 }
1626 delete points;
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1627}
1628
1629
1630#endif // wxUSE_SPLINES
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