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1/////////////////////////////////////////////////////////////////////////////
2// Name: region.cpp
3// Purpose:
4// Author: Robert Roebling
5// Id: $Id$
6// Copyright: (c) 1998 Robert Roebling
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10
11#ifdef __GNUG__
12#pragma implementation "region.h"
13#endif
14
15#include "wx/region.h"
16
17//-----------------------------------------------------------------------------
18// wxRegion
19//-----------------------------------------------------------------------------
20
21class wxRegionRefData: public wxObjectRefData
22{
23 public:
24
25 wxRegionRefData(void);
26 ~wxRegionRefData(void);
27
28 public:
29
30 GdkRegion *m_region;
31 wxList m_rects;
32};
33
34wxRegionRefData::wxRegionRefData(void)
35{
36 m_region = (GdkRegion *) NULL;
37}
38
39wxRegionRefData::~wxRegionRefData(void)
40{
41 if (m_region) gdk_region_destroy( m_region );
42
43 wxNode *node = m_rects.First();
44 while (node)
45 {
46 wxRect *r = (wxRect*)node->Data();
47 delete r;
48 node = node->Next();
49 }
50}
51
52//-----------------------------------------------------------------------------
53
54#define M_REGIONDATA ((wxRegionRefData *)m_refData)
55
56IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
57
58wxRegion::wxRegion( long x, long y, long w, long h )
59{
60 m_refData = new wxRegionRefData();
61 GdkRegion *reg = gdk_region_new();
62 GdkRectangle rect;
63 rect.x = x;
64 rect.y = y;
65 rect.width = w;
66 rect.height = h;
67 M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
68 gdk_region_destroy( reg );
69 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
70}
71
72wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
73{
74 m_refData = new wxRegionRefData();
75 GdkRegion *reg = gdk_region_new();
76 GdkRectangle rect;
77 rect.x = topLeft.x;
78 rect.y = topLeft.y;
79 rect.width = bottomRight.x - rect.x;
80 rect.height = bottomRight.y - rect.y;
81 M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
82 gdk_region_destroy( reg );
83 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
84}
85
86wxRegion::wxRegion( const wxRect& rect )
87{
88 m_refData = new wxRegionRefData();
89 GdkRegion *reg = gdk_region_new();
90 GdkRectangle g_rect;
91 g_rect.x = rect.x;
92 g_rect.y = rect.y;
93 g_rect.width = rect.width;
94 g_rect.height = rect.height;
95 M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
96 gdk_region_destroy( reg );
97
98 wxNode *node = M_REGIONDATA->m_rects.First();
99 while (node)
100 {
101 wxRect *r = (wxRect*)node->Data();
102 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
103 node = node->Next();
104 }
105}
106
107wxRegion::wxRegion(void)
108{
109 m_refData = new wxRegionRefData();
110 M_REGIONDATA->m_region = gdk_region_new();
111}
112
113wxRegion::~wxRegion(void)
114{
115}
116
117bool wxRegion::operator == ( const wxRegion& region )
118{
119 return m_refData == region.m_refData;
120}
121
122bool wxRegion::operator != ( const wxRegion& region )
123{
124 return m_refData != region.m_refData;
125}
126
127void wxRegion::Clear(void)
128{
129 UnRef();
130 m_refData = new wxRegionRefData();
131 M_REGIONDATA->m_region = gdk_region_new();
132}
133
134bool wxRegion::Union( long x, long y, long width, long height )
135{
136 GdkRectangle rect;
137 rect.x = x;
138 rect.y = y;
139 rect.width = width;
140 rect.height = height;
141 GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
142 gdk_region_destroy( M_REGIONDATA->m_region );
143 M_REGIONDATA->m_region = reg;
144 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
145 return TRUE;
146}
147
148bool wxRegion::Union( const wxRect& rect )
149{
150 GdkRectangle g_rect;
151 g_rect.x = rect.x;
152 g_rect.y = rect.y;
153 g_rect.width = rect.width;
154 g_rect.height = rect.height;
155 GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &g_rect );
156 gdk_region_destroy( M_REGIONDATA->m_region );
157 M_REGIONDATA->m_region = reg;
158 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
159 return TRUE;
160}
161
162bool wxRegion::Union( const wxRegion& region )
163{
164 GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
165 gdk_region_destroy( M_REGIONDATA->m_region );
166 M_REGIONDATA->m_region = reg;
167
168 wxNode *node = region.GetRectList()->First();
169 while (node)
170 {
171 wxRect *r = (wxRect*)node->Data();
172 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
173 node = node->Next();
174 }
175
176 return TRUE;
177}
178
179bool wxRegion::Intersect( long x, long y, long width, long height )
180{
181 wxRegion reg( x, y, width, height );
182 Intersect( reg );
183 return TRUE;
184}
185
186bool wxRegion::Intersect( const wxRect& rect )
187{
188 wxRegion reg( rect );
189 Intersect( reg );
190 return TRUE;
191}
192
193bool wxRegion::Intersect( const wxRegion& region )
194{
195 GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
196 gdk_region_destroy( M_REGIONDATA->m_region );
197 M_REGIONDATA->m_region = reg;
198 return TRUE;
199}
200
201bool wxRegion::Subtract( long x, long y, long width, long height )
202{
203 wxRegion reg( x, y, width, height );
204 Subtract( reg );
205 return TRUE;
206}
207
208bool wxRegion::Subtract( const wxRect& rect )
209{
210 wxRegion reg( rect );
211 Subtract( reg );
212 return TRUE;
213}
214
215bool wxRegion::Subtract( const wxRegion& region )
216{
217 GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
218 gdk_region_destroy( M_REGIONDATA->m_region );
219 M_REGIONDATA->m_region = reg;
220 return TRUE;
221}
222
223bool wxRegion::Xor( long x, long y, long width, long height )
224{
225 wxRegion reg( x, y, width, height );
226 Xor( reg );
227 return TRUE;
228}
229
230bool wxRegion::Xor( const wxRect& rect )
231{
232 wxRegion reg( rect );
233 Xor( reg );
234 return TRUE;
235}
236
237bool wxRegion::Xor( const wxRegion& region )
238{
239 GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
240 gdk_region_destroy( M_REGIONDATA->m_region );
241 M_REGIONDATA->m_region = reg;
242
243 wxNode *node = region.GetRectList()->First();
244 while (node)
245 {
246 wxRect *r = (wxRect*)node->Data();
247 M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
248 node = node->Next();
249 }
250
251 return TRUE;
252}
253
254void wxRegion::GetBox( long& x, long& y, long&w, long &h ) const
255{
256 x = 0;
257 y = 0;
258 w = -1;
259 h = -1;
260 wxNode *node = GetRectList()->First();
261 while (node)
262 {
263 wxRect *r = (wxRect*)node->Data();
264 if (node == GetRectList()->First())
265 {
266 x = r->x;
267 y = r->y;
268 w = r->width;
269 h = r->height;
270 }
271 else
272 {
273 if (r->x < x)
274 {
275 x = r->x;
276 w += x - r->x;
277 }
278 if (r->y < y)
279 {
280 y = r->y;
281 h += y - r->y;
282 }
283 if (r->width+r->x > x+w)
284 {
285 w = r->x + r->width - x;
286 }
287 if (r->height+r->y > y+h)
288 {
289 h = r->y + r->height - y;
290 }
291 }
292 node = node->Next();
293 }
294}
295
296wxRect wxRegion::GetBox(void) const
297{
298 long x = 0;
299 long y = 0;
300 long w = -1;
301 long h = -1;
302 GetBox( x, y, w, h );
303 return wxRect( x, y, w, h );
304}
305
306bool wxRegion::Empty(void) const
307{
308 return gdk_region_empty( M_REGIONDATA->m_region );
309}
310
311wxRegionContain wxRegion::Contains( long x, long y ) const
312{
313 if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
314 return wxInRegion;
315 else
316 return wxOutRegion;
317}
318
319wxRegionContain wxRegion::Contains( long x, long y, long w, long h ) const
320{
321 GdkRectangle rect;
322 rect.x = x;
323 rect.y = y;
324 rect.width = w;
325 rect.height = h;
326 GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
327 switch (res)
328 {
329 case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
330 case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
331 case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
332 }
333 return wxOutRegion;
334}
335
336wxRegionContain wxRegion::Contains(const wxPoint& pt) const
337{
338 return Contains( pt.x, pt.y );
339}
340
341wxRegionContain wxRegion::Contains(const wxRect& rect) const
342{
343 return Contains( rect.x, rect.y, rect.width, rect.height );
344}
345
346GdkRegion *wxRegion::GetRegion(void) const
347{
348 return M_REGIONDATA->m_region;
349}
350
351wxList *wxRegion::GetRectList() const
352{
353 return &(M_REGIONDATA->m_rects);
354}
355
356//-----------------------------------------------------------------------------
357// wxRegion
358//-----------------------------------------------------------------------------
359
360IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
361
362wxRegionIterator::wxRegionIterator(void)
363{
364 m_current = 0;
365}
366
367wxRegionIterator::wxRegionIterator( const wxRegion& region )
368{
369 m_region = region;
370 m_current = 0;
371}
372
373void wxRegionIterator::Reset( const wxRegion& region )
374{
375 m_region = region;
376 m_current = 0;
377}
378
379wxRegionIterator::operator bool (void) const
380{
381 return m_current < m_region.GetRectList()->Number();
382}
383
384bool wxRegionIterator::HaveRects(void) const
385{
386 return m_current < m_region.GetRectList()->Number();
387}
388
389void wxRegionIterator::operator ++ (void)
390{
391 if (m_current < m_region.GetRectList()->Number()) ++m_current;
392}
393
394void wxRegionIterator::operator ++ (int)
395{
396 if (m_current < m_region.GetRectList()->Number()) ++m_current;
397}
398
399long wxRegionIterator::GetX(void) const
400{
401 wxNode *node = m_region.GetRectList()->Nth( m_current );
402 if (!node) return 0;
403 wxRect *r = (wxRect*)node->Data();
404 return r->x;
405}
406
407long wxRegionIterator::GetY(void) const
408{
409 wxNode *node = m_region.GetRectList()->Nth( m_current );
410 if (!node) return 0;
411 wxRect *r = (wxRect*)node->Data();
412 return r->y;
413}
414
415long wxRegionIterator::GetW(void) const
416{
417 wxNode *node = m_region.GetRectList()->Nth( m_current );
418 if (!node) return 0;
419 wxRect *r = (wxRect*)node->Data();
420 return r->width;
421}
422
423long wxRegionIterator::GetH(void) const
424{
425 wxNode *node = m_region.GetRectList()->Nth( m_current );
426 if (!node) return 0;
427 wxRect *r = (wxRect*)node->Data();
428 return r->height;
429}
430
431