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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: dcclient.cpp | |
3 | // Purpose: | |
4 | // Author: Robert Roebling | |
5 | // Created: 01/02/97 | |
6f65e337 | 6 | // RCS-ID: $Id$ |
c801d85f KB |
7 | // Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifdef __GNUG__ | |
12 | #pragma implementation "dcclient.h" | |
13 | #endif | |
14 | ||
15 | #include "wx/dcclient.h" | |
6f65e337 | 16 | #include "wx/dcmemory.h" |
c801d85f KB |
17 | |
18 | //----------------------------------------------------------------------------- | |
19 | // local data | |
20 | //----------------------------------------------------------------------------- | |
21 | ||
22 | #include "bdiag.xbm" | |
23 | #include "fdiag.xbm" | |
24 | #include "cdiag.xbm" | |
25 | #include "horiz.xbm" | |
26 | #include "verti.xbm" | |
27 | #include "cross.xbm" | |
28 | #define num_hatches 6 | |
29 | ||
30 | static GdkPixmap *hatches[num_hatches]; | |
31 | static GdkPixmap **hatch_bitmap = NULL; | |
32 | ||
33 | //----------------------------------------------------------------------------- | |
34 | // constants | |
35 | //----------------------------------------------------------------------------- | |
36 | ||
37 | #define RAD2DEG 57.2957795131 | |
38 | ||
6f65e337 JS |
39 | //----------------------------------------------------------------------------- |
40 | // temporary implementation of the missing GDK function | |
41 | //----------------------------------------------------------------------------- | |
42 | #include "gdk/gdkprivate.h" | |
43 | void gdk_draw_bitmap (GdkDrawable *drawable, | |
44 | GdkGC *gc, | |
45 | GdkDrawable *src, | |
46 | gint xsrc, | |
47 | gint ysrc, | |
48 | gint xdest, | |
49 | gint ydest, | |
50 | gint width, | |
51 | gint height) | |
52 | { | |
53 | GdkWindowPrivate *drawable_private; | |
54 | GdkWindowPrivate *src_private; | |
55 | GdkGCPrivate *gc_private; | |
56 | ||
57 | g_return_if_fail (drawable != NULL); | |
58 | g_return_if_fail (src != NULL); | |
59 | g_return_if_fail (gc != NULL); | |
60 | ||
61 | drawable_private = (GdkWindowPrivate*) drawable; | |
62 | src_private = (GdkWindowPrivate*) src; | |
63 | if (drawable_private->destroyed || src_private->destroyed) | |
64 | return; | |
65 | gc_private = (GdkGCPrivate*) gc; | |
66 | ||
67 | if (width == -1) | |
68 | width = src_private->width; | |
69 | if (height == -1) | |
70 | height = src_private->height; | |
71 | ||
72 | XCopyPlane (drawable_private->xdisplay, | |
73 | src_private->xwindow, | |
74 | drawable_private->xwindow, | |
75 | gc_private->xgc, | |
76 | xsrc, ysrc, | |
77 | width, height, | |
78 | xdest, ydest, | |
79 | 1); | |
80 | } | |
81 | ||
c801d85f KB |
82 | //----------------------------------------------------------------------------- |
83 | // wxPaintDC | |
84 | //----------------------------------------------------------------------------- | |
85 | ||
86 | IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxDC) | |
87 | ||
88 | wxPaintDC::wxPaintDC(void) | |
89 | { | |
90 | }; | |
91 | ||
92 | wxPaintDC::wxPaintDC( wxWindow *window ) | |
93 | { | |
94 | if (!window) return; | |
95 | GtkWidget *widget = window->m_wxwindow; | |
96 | if (!widget) return; | |
97 | m_window = widget->window; | |
98 | if (!m_window) return; | |
99 | if (window->m_wxwindow) | |
100 | m_cmap = gtk_widget_get_colormap( window->m_wxwindow ); | |
101 | else | |
102 | m_cmap = gtk_widget_get_colormap( window->m_widget ); | |
103 | SetUpDC(); | |
104 | ||
105 | long x = 0; | |
106 | long y = 0; | |
107 | window->GetDrawingOffset( &x, &y ); | |
108 | SetInternalDeviceOrigin( -x, -y ); | |
109 | }; | |
110 | ||
111 | wxPaintDC::~wxPaintDC(void) | |
112 | { | |
113 | }; | |
114 | ||
115 | void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1), | |
116 | wxColour *WXUNUSED(col), int WXUNUSED(style) ) | |
117 | { | |
118 | }; | |
119 | ||
120 | bool wxPaintDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const | |
121 | { | |
122 | return FALSE; | |
123 | }; | |
124 | ||
125 | void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 ) | |
126 | { | |
127 | if (!Ok()) return; | |
128 | ||
129 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
130 | { | |
131 | gdk_draw_line( m_window, m_penGC, | |
132 | XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) ); | |
133 | }; | |
134 | }; | |
135 | ||
136 | void wxPaintDC::CrossHair( long x, long y ) | |
137 | { | |
138 | if (!Ok()) return; | |
139 | ||
140 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
141 | { | |
142 | int w = 0; | |
143 | int h = 0; | |
144 | GetSize( &w, &h ); | |
145 | long xx = XLOG2DEV(x); | |
146 | long yy = YLOG2DEV(y); | |
147 | gdk_draw_line( m_window, m_penGC, | |
148 | 0, yy, XLOG2DEVREL(w), yy ); | |
149 | gdk_draw_line( m_window, m_penGC, | |
150 | xx, 0, xx, YLOG2DEVREL(h) ); | |
151 | }; | |
152 | }; | |
153 | ||
154 | void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double yc ) | |
155 | { | |
156 | if (!Ok()) return; | |
157 | ||
158 | long xx1 = XLOG2DEV(x1); | |
159 | long yy1 = YLOG2DEV(y1); | |
160 | long xx2 = XLOG2DEV(x2); | |
161 | long yy2 = YLOG2DEV(y2); | |
162 | long xxc = XLOG2DEV((long)xc); | |
163 | long yyc = YLOG2DEV((long)yc); | |
164 | double dx = xx1 - xxc; | |
165 | double dy = yy1 - yyc; | |
166 | double radius = sqrt(dx*dx+dy*dy); | |
167 | long r = (long)radius; | |
168 | double radius1, radius2; | |
169 | ||
170 | if (xx1 == xx2 && yy1 == yy2) | |
171 | { | |
172 | radius1 = 0.0; | |
173 | radius2 = 360.0; | |
174 | } | |
175 | else | |
176 | if (radius == 0.0) | |
177 | { | |
178 | radius1 = radius2 = 0.0; | |
179 | } | |
180 | else | |
181 | { | |
182 | radius1 = (xx1 - xxc == 0) ? | |
183 | (yy1 - yyc < 0) ? 90.0 : -90.0 : | |
184 | -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG; | |
185 | radius2 = (xx2 - xxc == 0) ? | |
186 | (yy2 - yyc < 0) ? 90.0 : -90.0 : | |
187 | -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG; | |
188 | }; | |
189 | long alpha1 = long(radius1 * 64.0); | |
190 | long alpha2 = long((radius2 - radius1) * 64.0); | |
191 | while (alpha2 <= 0) alpha2 += 360*64; | |
192 | while (alpha1 > 360*64) alpha1 -= 360*64; | |
193 | ||
194 | if (m_brush.GetStyle() != wxTRANSPARENT) | |
195 | gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 ); | |
196 | ||
197 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
198 | gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 ); | |
199 | ||
200 | }; | |
201 | ||
202 | void wxPaintDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) | |
203 | { | |
204 | if (!Ok()) return; | |
205 | ||
c801d85f KB |
206 | long xx = XLOG2DEV(x); |
207 | long yy = YLOG2DEV(y); | |
6f65e337 JS |
208 | long ww = m_signX * XLOG2DEVREL(width); |
209 | long hh = m_signY * YLOG2DEVREL(height); | |
c801d85f | 210 | |
6f65e337 JS |
211 | // CMB: handle -ve width and/or height |
212 | if (ww < 0) { ww = -ww; xx = xx - ww; } | |
213 | if (hh < 0) { hh = -hh; yy = yy - hh; } | |
214 | ||
215 | long start = long(sa * 64.0); | |
216 | long end = long(ea * 64.0); | |
c801d85f | 217 | if (m_brush.GetStyle() != wxTRANSPARENT) |
6f65e337 | 218 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end ); |
c801d85f KB |
219 | |
220 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
6f65e337 | 221 | gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end ); |
c801d85f KB |
222 | }; |
223 | ||
224 | void wxPaintDC::DrawPoint( long x, long y ) | |
225 | { | |
226 | if (!Ok()) return; | |
227 | ||
228 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
229 | gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) ); | |
230 | }; | |
231 | ||
232 | void wxPaintDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset ) | |
233 | { | |
234 | if (!Ok()) return; | |
235 | ||
236 | if (m_pen.GetStyle() == wxTRANSPARENT) return; | |
237 | ||
238 | for (int i = 0; i < n-1; i++) | |
239 | { | |
240 | long x1 = XLOG2DEV(points[i].x + xoffset); | |
241 | long x2 = XLOG2DEV(points[i+1].x + xoffset); | |
242 | long y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste | |
243 | long y2 = YLOG2DEV(points[i+1].y + yoffset); | |
4c681997 | 244 | gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 ); |
c801d85f KB |
245 | }; |
246 | }; | |
247 | ||
248 | void wxPaintDC::DrawLines( wxList *points, long xoffset, long yoffset ) | |
249 | { | |
250 | if (!Ok()) return; | |
251 | ||
252 | if (m_pen.GetStyle() == wxTRANSPARENT) return; | |
253 | ||
254 | wxNode *node = points->First(); | |
255 | while (node->Next()) | |
256 | { | |
257 | wxPoint *point = (wxPoint*)node->Data(); | |
258 | wxPoint *npoint = (wxPoint*)node->Next()->Data(); | |
259 | long x1 = XLOG2DEV(point->x + xoffset); | |
260 | long x2 = XLOG2DEV(npoint->x + xoffset); | |
261 | long y1 = YLOG2DEV(point->y + yoffset); // and again... | |
262 | long y2 = YLOG2DEV(npoint->y + yoffset); | |
4c681997 | 263 | gdk_draw_line( m_window, m_penGC, x1, y1, x2, y2 ); |
c801d85f KB |
264 | node = node->Next(); |
265 | }; | |
266 | }; | |
267 | ||
268 | void wxPaintDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[], | |
269 | long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) ) | |
270 | { | |
271 | if (!Ok()) return; | |
272 | }; | |
273 | ||
274 | void wxPaintDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset), | |
275 | long WXUNUSED(yoffset), int WXUNUSED(fillStyle) ) | |
276 | { | |
277 | if (!Ok()) return; | |
278 | }; | |
279 | ||
280 | void wxPaintDC::DrawRectangle( long x, long y, long width, long height ) | |
281 | { | |
282 | if (!Ok()) return; | |
283 | ||
284 | long xx = XLOG2DEV(x); | |
285 | long yy = YLOG2DEV(y); | |
6f65e337 JS |
286 | long ww = m_signX * XLOG2DEVREL(width); |
287 | long hh = m_signY * YLOG2DEVREL(height); | |
c801d85f | 288 | |
6f65e337 JS |
289 | // CMB: draw nothing if transformed w or h is 0 |
290 | if (ww == 0 || hh == 0) return; | |
291 | ||
292 | // CMB: handle -ve width and/or height | |
293 | if (ww < 0) { ww = -ww; xx = xx - ww; } | |
294 | if (hh < 0) { hh = -hh; yy = yy - hh; } | |
295 | ||
c801d85f KB |
296 | if (m_brush.GetStyle() != wxTRANSPARENT) |
297 | gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh ); | |
298 | ||
299 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
300 | gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 ); | |
301 | }; | |
302 | ||
303 | void wxPaintDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius ) | |
304 | { | |
305 | if (!Ok()) return; | |
306 | ||
c801d85f KB |
307 | if (radius < 0.0) radius = - radius * ((width < height) ? width : height); |
308 | ||
309 | long xx = XLOG2DEV(x); | |
310 | long yy = YLOG2DEV(y); | |
6f65e337 JS |
311 | long ww = m_signX * XLOG2DEVREL(width); |
312 | long hh = m_signY * YLOG2DEVREL(height); | |
c801d85f | 313 | long rr = XLOG2DEVREL((long)radius); |
6f65e337 JS |
314 | |
315 | // CMB: handle -ve width and/or height | |
316 | if (ww < 0) { ww = -ww; xx = xx - ww; } | |
317 | if (hh < 0) { hh = -hh; yy = yy - hh; } | |
318 | ||
319 | // CMB: if radius is zero use DrawRectangle() instead to avoid | |
320 | // X drawing errors with small radii | |
321 | if (rr == 0) | |
322 | { | |
323 | DrawRectangle( x, y, width, height ); | |
324 | return; | |
325 | } | |
326 | ||
327 | // CMB: draw nothing if transformed w or h is 0 | |
328 | if (ww == 0 || hh == 0) return; | |
329 | ||
330 | // CMB: adjust size if outline is drawn otherwise the result is | |
331 | // 1 pixel too wide and high | |
332 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
333 | { | |
334 | ww--; | |
335 | hh--; | |
336 | } | |
337 | ||
338 | // CMB: ensure dd is not larger than rectangle otherwise we | |
339 | // get an hour glass shape | |
c801d85f | 340 | long dd = 2 * rr; |
6f65e337 JS |
341 | if (dd > ww) dd = ww; |
342 | if (dd > hh) dd = hh; | |
343 | rr = dd / 2; | |
c801d85f KB |
344 | |
345 | if (m_brush.GetStyle() != wxTRANSPARENT) | |
346 | { | |
6f65e337 JS |
347 | gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh ); |
348 | gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 ); | |
c801d85f KB |
349 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 ); |
350 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 ); | |
351 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 ); | |
352 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 ); | |
353 | }; | |
354 | ||
355 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
356 | { | |
357 | gdk_draw_line( m_window, m_penGC, xx+rr, yy, xx+ww-rr, yy ); | |
358 | gdk_draw_line( m_window, m_penGC, xx+rr, yy+hh, xx+ww-rr, yy+hh ); | |
359 | gdk_draw_line( m_window, m_penGC, xx, yy+rr, xx, yy+hh-rr ); | |
360 | gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr, xx+ww, yy+hh-rr ); | |
361 | gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 ); | |
362 | gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 ); | |
363 | gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 ); | |
364 | gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 ); | |
365 | }; | |
366 | }; | |
367 | ||
368 | void wxPaintDC::DrawEllipse( long x, long y, long width, long height ) | |
369 | { | |
370 | if (!Ok()) return; | |
371 | ||
c801d85f KB |
372 | long xx = XLOG2DEV(x); |
373 | long yy = YLOG2DEV(y); | |
6f65e337 JS |
374 | long ww = m_signX * XLOG2DEVREL(width); |
375 | long hh = m_signY * YLOG2DEVREL(height); | |
376 | ||
377 | // CMB: handle -ve width and/or height | |
378 | if (ww < 0) { ww = -ww; xx = xx - ww; } | |
379 | if (hh < 0) { hh = -hh; yy = yy - hh; } | |
c801d85f KB |
380 | |
381 | if (m_brush.GetStyle() != wxTRANSPARENT) | |
382 | gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 ); | |
383 | ||
384 | if (m_pen.GetStyle() != wxTRANSPARENT) | |
385 | gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 ); | |
386 | }; | |
387 | ||
388 | bool wxPaintDC::CanDrawBitmap(void) const | |
389 | { | |
390 | return TRUE; | |
391 | }; | |
392 | ||
393 | void wxPaintDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask ) | |
394 | { | |
395 | if (!Ok()) return; | |
396 | ||
397 | if (!icon.Ok()) return; | |
398 | ||
399 | int xx = XLOG2DEV(x); | |
400 | int yy = YLOG2DEV(y); | |
401 | ||
402 | GdkBitmap *mask = NULL; | |
403 | if (icon.GetMask()) mask = icon.GetMask()->GetBitmap(); | |
404 | ||
405 | if (useMask && mask) | |
406 | { | |
407 | gdk_gc_set_clip_mask( m_penGC, mask ); | |
408 | gdk_gc_set_clip_origin( m_penGC, xx, yy ); | |
409 | }; | |
410 | ||
411 | GdkPixmap *pm = icon.GetPixmap(); | |
412 | gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 ); | |
413 | ||
414 | if (useMask && mask) | |
415 | { | |
416 | gdk_gc_set_clip_mask( m_penGC, NULL ); | |
417 | gdk_gc_set_clip_origin( m_penGC, 0, 0 ); | |
418 | }; | |
419 | }; | |
420 | ||
421 | bool wxPaintDC::Blit( long xdest, long ydest, long width, long height, | |
422 | wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) ) | |
423 | { | |
424 | if (!Ok()) return FALSE; | |
425 | ||
6f65e337 JS |
426 | // CMB 20/5/98: add blitting of bitmaps |
427 | if (source->IsKindOf(CLASSINFO(wxMemoryDC))) | |
428 | { | |
429 | wxMemoryDC* srcDC = (wxMemoryDC*)source; | |
430 | GdkBitmap* bmap = srcDC->m_selected.GetBitmap(); | |
431 | if (bmap) | |
432 | { | |
433 | gdk_draw_bitmap ( | |
434 | m_window, | |
435 | m_textGC, | |
436 | bmap, | |
437 | source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc), | |
438 | XLOG2DEV(xdest), YLOG2DEV(ydest), | |
439 | source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) | |
440 | ); | |
441 | return TRUE; | |
442 | } | |
443 | } | |
c801d85f | 444 | |
6f65e337 | 445 | wxClientDC *csrc = (wxClientDC*)source; |
c801d85f KB |
446 | gdk_window_copy_area ( m_window, m_penGC, |
447 | XLOG2DEV(xdest), YLOG2DEV(ydest), | |
448 | csrc->GetWindow(), | |
449 | source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc), | |
450 | source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height) ); | |
451 | ||
452 | /* | |
453 | gdk_window_copy_area ( m_window, m_penGC, | |
454 | XLOG2DEV(xdest), YLOG2DEV(ydest), | |
455 | csrc->GetWindow(), | |
456 | xsrc, ysrc, | |
457 | width, height ); | |
458 | */ | |
459 | ||
460 | return TRUE; | |
461 | }; | |
462 | ||
463 | void wxPaintDC::DrawText( const wxString &text, long x, long y, bool WXUNUSED(use16) ) | |
464 | { | |
465 | if (!Ok()) return; | |
466 | ||
467 | GdkFont *font = m_font.GetInternalFont( m_scaleY ); | |
6f65e337 JS |
468 | |
469 | // CMB 21/5/98: draw text background if mode is wxSOLID | |
470 | if (m_backgroundMode == wxSOLID) | |
471 | { | |
472 | long width = gdk_string_width( font, text ); | |
473 | long height = font->ascent + font->descent; | |
474 | gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() ); | |
475 | gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height ); | |
476 | gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() ); | |
477 | } | |
c801d85f KB |
478 | gdk_draw_string( m_window, font, m_textGC, |
479 | XLOG2DEV(x), | |
480 | YLOG2DEV(y) + font->ascent, text ); | |
481 | }; | |
482 | ||
483 | bool wxPaintDC::CanGetTextExtent(void) const | |
484 | { | |
485 | return TRUE; | |
486 | }; | |
487 | ||
488 | void wxPaintDC::GetTextExtent( const wxString &string, long *width, long *height, | |
489 | long *WXUNUSED(descent), long *WXUNUSED(externalLeading), | |
490 | wxFont *WXUNUSED(theFont), bool WXUNUSED(use16) ) | |
491 | { | |
492 | if (!Ok()) return; | |
493 | ||
494 | GdkFont *font = m_font.GetInternalFont( m_scaleY ); | |
6f65e337 JS |
495 | if (width) (*width) = long(gdk_string_width( font, string ) / m_scaleX); |
496 | if (height) (*height) = long((font->ascent + font->descent) / m_scaleY); | |
c801d85f KB |
497 | }; |
498 | ||
499 | long wxPaintDC::GetCharWidth(void) | |
500 | { | |
501 | if (!Ok()) return 0; | |
502 | ||
503 | GdkFont *font = m_font.GetInternalFont( m_scaleY ); | |
504 | return gdk_string_width( font, "H" ); | |
505 | }; | |
506 | ||
507 | long wxPaintDC::GetCharHeight(void) | |
508 | { | |
509 | if (!Ok()) return 0; | |
510 | ||
511 | GdkFont *font = m_font.GetInternalFont( m_scaleY ); | |
512 | return font->ascent + font->descent; | |
513 | }; | |
514 | ||
515 | void wxPaintDC::Clear(void) | |
516 | { | |
517 | if (!Ok()) return; | |
518 | ||
519 | DestroyClippingRegion(); | |
520 | gdk_window_clear( m_window ); | |
521 | }; | |
522 | ||
523 | void wxPaintDC::SetFont( const wxFont &font ) | |
524 | { | |
525 | if (!Ok()) return; | |
526 | ||
527 | m_font = font; | |
528 | }; | |
529 | ||
530 | void wxPaintDC::SetPen( const wxPen &pen ) | |
531 | { | |
532 | if (!Ok()) return; | |
533 | ||
534 | if (m_pen == pen) return; | |
535 | ||
536 | m_pen = pen; | |
537 | ||
538 | if (!m_pen.Ok()) return; | |
539 | ||
540 | gint width = m_pen.GetWidth(); | |
6f65e337 JS |
541 | // CMB: if width is non-zero scale it with the dc |
542 | if (width <= 0) | |
543 | { | |
544 | width = 1; | |
545 | } | |
546 | else | |
547 | { | |
548 | // X doesn't allow different width in x and y and so we take | |
549 | // the average | |
550 | double w = 0.5 + (abs(XLOG2DEVREL(width)) + abs(YLOG2DEVREL(width))) / 2.0; | |
551 | width = (int)w; | |
552 | } | |
c801d85f KB |
553 | |
554 | GdkLineStyle lineStyle = GDK_LINE_SOLID; | |
555 | switch (m_pen.GetStyle()) | |
556 | { | |
557 | case wxSOLID: { lineStyle = GDK_LINE_SOLID; break; }; | |
558 | case wxDOT: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }; | |
559 | case wxLONG_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }; | |
560 | case wxSHORT_DASH: { lineStyle = GDK_LINE_ON_OFF_DASH; break; }; | |
561 | case wxDOT_DASH: { lineStyle = GDK_LINE_DOUBLE_DASH; break; }; | |
562 | }; | |
563 | ||
564 | GdkCapStyle capStyle = GDK_CAP_ROUND; | |
565 | switch (m_pen.GetCap()) | |
566 | { | |
6f65e337 | 567 | case wxCAP_ROUND: { capStyle = (width <= 1) ? GDK_CAP_NOT_LAST : GDK_CAP_ROUND; break; }; |
c801d85f KB |
568 | case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }; |
569 | case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }; | |
570 | }; | |
571 | ||
572 | GdkJoinStyle joinStyle = GDK_JOIN_ROUND; | |
573 | switch (m_pen.GetJoin()) | |
574 | { | |
575 | case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }; | |
576 | case wxJOIN_ROUND: { joinStyle = GDK_JOIN_ROUND; break; }; | |
577 | case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }; | |
578 | }; | |
579 | ||
580 | gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle ); | |
581 | ||
582 | m_pen.GetColour().CalcPixel( m_cmap ); | |
583 | gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() ); | |
584 | }; | |
585 | ||
586 | void wxPaintDC::SetBrush( const wxBrush &brush ) | |
587 | { | |
588 | if (!Ok()) return; | |
589 | ||
590 | if (m_brush == brush) return; | |
591 | ||
592 | m_brush = brush; | |
593 | ||
594 | if (!m_brush.Ok()) return; | |
595 | ||
596 | m_brush.GetColour().CalcPixel( m_cmap ); | |
597 | gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() ); | |
598 | ||
599 | GdkFill fillStyle = GDK_SOLID; | |
600 | switch (m_brush.GetStyle()) | |
601 | { | |
602 | case wxSOLID: | |
603 | case wxTRANSPARENT: | |
604 | break; | |
605 | default: | |
606 | fillStyle = GDK_STIPPLED; | |
607 | }; | |
608 | ||
609 | gdk_gc_set_fill( m_brushGC, fillStyle ); | |
610 | ||
611 | if (m_brush.GetStyle() == wxSTIPPLE) | |
612 | { | |
613 | gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() ); | |
614 | }; | |
615 | ||
616 | if (IS_HATCH(m_brush.GetStyle())) | |
617 | { | |
618 | int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH; | |
619 | gdk_gc_set_stipple( m_brushGC, hatches[num] ); | |
620 | }; | |
621 | }; | |
622 | ||
623 | void wxPaintDC::SetLogicalFunction( int function ) | |
624 | { | |
625 | if (m_logicalFunction == function) return; | |
626 | GdkFunction mode = GDK_COPY; | |
627 | switch (function) | |
628 | { | |
629 | case wxXOR: mode = GDK_INVERT; break; | |
630 | case wxINVERT: mode = GDK_INVERT; break; | |
631 | default: break; | |
632 | }; | |
633 | m_logicalFunction = function; | |
634 | gdk_gc_set_function( m_penGC, mode ); | |
635 | gdk_gc_set_function( m_brushGC, mode ); | |
636 | }; | |
637 | ||
638 | void wxPaintDC::SetTextForeground( const wxColour &col ) | |
639 | { | |
640 | if (!Ok()) return; | |
641 | ||
642 | if (m_textForegroundColour == col) return; | |
643 | ||
644 | m_textForegroundColour = col; | |
645 | if (!m_textForegroundColour.Ok()) return; | |
646 | ||
647 | m_textForegroundColour.CalcPixel( m_cmap ); | |
648 | gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() ); | |
649 | }; | |
650 | ||
651 | void wxPaintDC::SetTextBackground( const wxColour &col ) | |
652 | { | |
653 | if (!Ok()) return; | |
654 | ||
655 | if (m_textBackgroundColour == col) return; | |
656 | ||
657 | m_textBackgroundColour = col; | |
658 | if (!m_textBackgroundColour.Ok()) return; | |
659 | ||
660 | m_textBackgroundColour.CalcPixel( m_cmap ); | |
661 | gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() ); | |
662 | }; | |
663 | ||
6f65e337 | 664 | void wxPaintDC::SetBackgroundMode( int mode ) |
c801d85f | 665 | { |
6f65e337 | 666 | m_backgroundMode = mode; |
c801d85f KB |
667 | }; |
668 | ||
669 | void wxPaintDC::SetPalette( const wxPalette& WXUNUSED(palette) ) | |
670 | { | |
671 | }; | |
672 | ||
673 | void wxPaintDC::SetClippingRegion( long x, long y, long width, long height ) | |
674 | { | |
675 | wxDC::SetClippingRegion( x, y, width, height ); | |
676 | ||
677 | GdkRectangle rect; | |
678 | rect.x = XLOG2DEV(x); | |
679 | rect.y = YLOG2DEV(y); | |
680 | rect.width = XLOG2DEV(x+width); | |
681 | rect.height = YLOG2DEV(y+height); | |
682 | gdk_gc_set_clip_rectangle( m_penGC, &rect ); | |
683 | gdk_gc_set_clip_rectangle( m_brushGC, &rect ); | |
684 | gdk_gc_set_clip_rectangle( m_textGC, &rect ); | |
685 | gdk_gc_set_clip_rectangle( m_bgGC, &rect ); | |
686 | ||
687 | }; | |
688 | ||
689 | void wxPaintDC::DestroyClippingRegion(void) | |
690 | { | |
691 | wxDC::DestroyClippingRegion(); | |
692 | ||
693 | gdk_gc_set_clip_rectangle( m_penGC, NULL ); | |
694 | gdk_gc_set_clip_rectangle( m_brushGC, NULL ); | |
695 | gdk_gc_set_clip_rectangle( m_textGC, NULL ); | |
696 | gdk_gc_set_clip_rectangle( m_bgGC, NULL ); | |
697 | }; | |
698 | ||
699 | void wxPaintDC::SetUpDC(void) | |
700 | { | |
701 | m_ok = TRUE; | |
702 | m_logicalFunction = wxCOPY; | |
703 | m_penGC = gdk_gc_new( m_window ); | |
704 | m_brushGC = gdk_gc_new( m_window ); | |
705 | m_textGC = gdk_gc_new( m_window ); | |
706 | m_bgGC = gdk_gc_new( m_window ); | |
707 | SetTextForeground( m_textForegroundColour ); | |
708 | SetTextBackground( m_textBackgroundColour ); | |
709 | SetPen( m_pen ); | |
710 | SetFont( m_font ); | |
711 | SetBrush( m_brush ); | |
712 | ||
713 | gdk_gc_set_background( m_penGC, wxWHITE->GetColor() ); | |
714 | ||
715 | if (!hatch_bitmap) | |
716 | { | |
717 | hatch_bitmap = hatches; | |
718 | hatch_bitmap[0] = gdk_bitmap_create_from_data( NULL, bdiag_bits, bdiag_width, bdiag_height ); | |
719 | hatch_bitmap[1] = gdk_bitmap_create_from_data( NULL, cdiag_bits, cdiag_width, cdiag_height ); | |
720 | hatch_bitmap[2] = gdk_bitmap_create_from_data( NULL, fdiag_bits, fdiag_width, fdiag_height ); | |
721 | hatch_bitmap[3] = gdk_bitmap_create_from_data( NULL, cross_bits, cross_width, cross_height ); | |
722 | hatch_bitmap[4] = gdk_bitmap_create_from_data( NULL, horiz_bits, horiz_width, horiz_height ); | |
723 | hatch_bitmap[5] = gdk_bitmap_create_from_data( NULL, verti_bits, verti_width, verti_height ); | |
724 | }; | |
725 | }; | |
726 | ||
727 | GdkWindow *wxPaintDC::GetWindow(void) | |
728 | { | |
729 | return m_window; | |
730 | }; | |
731 | ||
732 | // ----------------------------------- spline code ---------------------------------------- | |
733 | ||
734 | void wx_quadratic_spline(double a1, double b1, double a2, double b2, | |
735 | double a3, double b3, double a4, double b4); | |
736 | void wx_clear_stack(void); | |
737 | int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3, | |
738 | double *y3, double *x4, double *y4); | |
739 | void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, | |
740 | double x4, double y4); | |
741 | static bool wx_spline_add_point(double x, double y); | |
742 | static void wx_spline_draw_point_array(wxDC *dc); | |
743 | ||
744 | wxList wx_spline_point_list; | |
745 | ||
746 | #define half(z1, z2) ((z1+z2)/2.0) | |
747 | #define THRESHOLD 5 | |
748 | ||
749 | /* iterative version */ | |
750 | ||
751 | void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4, | |
752 | double b4) | |
753 | { | |
754 | register double xmid, ymid; | |
755 | double x1, y1, x2, y2, x3, y3, x4, y4; | |
756 | ||
757 | wx_clear_stack(); | |
758 | wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4); | |
759 | ||
760 | while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) { | |
761 | xmid = (double)half(x2, x3); | |
762 | ymid = (double)half(y2, y3); | |
763 | if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD && | |
764 | fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) { | |
765 | wx_spline_add_point( x1, y1 ); | |
766 | wx_spline_add_point( xmid, ymid ); | |
767 | } else { | |
768 | wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3), | |
769 | (double)half(x3, x4), (double)half(y3, y4), x4, y4); | |
770 | wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2), | |
771 | (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid); | |
772 | } | |
773 | } | |
774 | } | |
775 | ||
776 | /* utilities used by spline drawing routines */ | |
777 | ||
778 | typedef struct wx_spline_stack_struct { | |
779 | double x1, y1, x2, y2, x3, y3, x4, y4; | |
780 | } Stack; | |
781 | ||
782 | #define SPLINE_STACK_DEPTH 20 | |
783 | static Stack wx_spline_stack[SPLINE_STACK_DEPTH]; | |
784 | static Stack *wx_stack_top; | |
785 | static int wx_stack_count; | |
786 | ||
787 | void wx_clear_stack(void) | |
788 | { | |
789 | wx_stack_top = wx_spline_stack; | |
790 | wx_stack_count = 0; | |
791 | } | |
792 | ||
793 | void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) | |
794 | { | |
795 | wx_stack_top->x1 = x1; | |
796 | wx_stack_top->y1 = y1; | |
797 | wx_stack_top->x2 = x2; | |
798 | wx_stack_top->y2 = y2; | |
799 | wx_stack_top->x3 = x3; | |
800 | wx_stack_top->y3 = y3; | |
801 | wx_stack_top->x4 = x4; | |
802 | wx_stack_top->y4 = y4; | |
803 | wx_stack_top++; | |
804 | wx_stack_count++; | |
805 | } | |
806 | ||
807 | int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, | |
808 | double *x3, double *y3, double *x4, double *y4) | |
809 | { | |
810 | if (wx_stack_count == 0) | |
811 | return (0); | |
812 | wx_stack_top--; | |
813 | wx_stack_count--; | |
814 | *x1 = wx_stack_top->x1; | |
815 | *y1 = wx_stack_top->y1; | |
816 | *x2 = wx_stack_top->x2; | |
817 | *y2 = wx_stack_top->y2; | |
818 | *x3 = wx_stack_top->x3; | |
819 | *y3 = wx_stack_top->y3; | |
820 | *x4 = wx_stack_top->x4; | |
821 | *y4 = wx_stack_top->y4; | |
822 | return (1); | |
823 | } | |
824 | ||
825 | static bool wx_spline_add_point(double x, double y) | |
826 | { | |
827 | wxPoint *point = new wxPoint ; | |
828 | point->x = (int) x; | |
829 | point->y = (int) y; | |
830 | wx_spline_point_list.Append((wxObject*)point); | |
831 | return TRUE; | |
832 | } | |
833 | ||
834 | static void wx_spline_draw_point_array(wxDC *dc) | |
835 | { | |
836 | dc->DrawLines(&wx_spline_point_list, 0, 0 ); | |
837 | wxNode *node = wx_spline_point_list.First(); | |
838 | while (node) | |
839 | { | |
840 | wxPoint *point = (wxPoint *)node->Data(); | |
841 | delete point; | |
842 | delete node; | |
843 | node = wx_spline_point_list.First(); | |
844 | } | |
845 | } | |
846 | ||
847 | void wxPaintDC::DrawOpenSpline( wxList *points ) | |
848 | { | |
849 | wxPoint *p; | |
850 | double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; | |
851 | double x1, y1, x2, y2; | |
852 | ||
853 | wxNode *node = points->First(); | |
854 | p = (wxPoint *)node->Data(); | |
855 | ||
856 | x1 = p->x; | |
857 | y1 = p->y; | |
858 | ||
859 | node = node->Next(); | |
860 | p = (wxPoint *)node->Data(); | |
861 | ||
862 | x2 = p->x; | |
863 | y2 = p->y; | |
864 | cx1 = (double)((x1 + x2) / 2); | |
865 | cy1 = (double)((y1 + y2) / 2); | |
866 | cx2 = (double)((cx1 + x2) / 2); | |
867 | cy2 = (double)((cy1 + y2) / 2); | |
868 | ||
869 | wx_spline_add_point(x1, y1); | |
870 | ||
871 | while ((node = node->Next()) != NULL) | |
872 | { | |
873 | p = (wxPoint *)node->Data(); | |
874 | x1 = x2; | |
875 | y1 = y2; | |
876 | x2 = p->x; | |
877 | y2 = p->y; | |
878 | cx4 = (double)(x1 + x2) / 2; | |
879 | cy4 = (double)(y1 + y2) / 2; | |
880 | cx3 = (double)(x1 + cx4) / 2; | |
881 | cy3 = (double)(y1 + cy4) / 2; | |
882 | ||
883 | wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); | |
884 | ||
885 | cx1 = cx4; | |
886 | cy1 = cy4; | |
887 | cx2 = (double)(cx1 + x2) / 2; | |
888 | cy2 = (double)(cy1 + y2) / 2; | |
889 | } | |
890 | ||
891 | wx_spline_add_point( cx1, cy1 ); | |
892 | wx_spline_add_point( x2, y2 ); | |
893 | ||
894 | wx_spline_draw_point_array( this ); | |
895 | }; |